NASA-TM-110557

NASA STI

Bulletin

1975-1978

(NASA-TM-110557) NASA STI

_ULLETIN, 1975-1978 (NASA) 186 p

N95-71024

Unclas

Z?/82 OO45755
1975
No. 75-i*

January i0, 1975

* * * RECON BULLETIN * * *

CAPABILITY TO SELECT _iqJOR OR MINOR TERMS

Heretofore, all RECON SELECT Commands caused all documents indexed

to a given term to be included in the created--_t. We now have the

capability of SELECTING sets of documents in which an assigned term

is either a Major or Minor term as well as the long standing capability of SELECTING all uses (Major and _nor) of the term.

As in the past, if one SELECTs terms using the "ST/" prefix or the

EXPAND reference numbers (e.g. "El0," "R8" etc.), both Major and

Minor uses of the terms will be picked up. If one wants to simply

do as before, no change in operating procedure is required.

Now, one can search those documents that have specific subject

terms assigned as Major terms (In ST.g/R or IAA accessions, these terms

would appear in the published indexe-_7 or as Minor terms. In such

cases, one must use the prefixes:

MJ/ (for Major terms) or

MN/ (for Minor terms).

Thus, to select the subject term SUPERSONIC TRANSPORTS only when it

has been used as a major ter_ in indexing a document, one would

enter:

bMJ/SUPERSONIC TR;U'[SPORTS.

To select the subject term SUPERSONIC TRANSPORTS only when it has

been used as a minor term in indexing a document, one would enter

bMN/SUPERSONIC TR_SPORTS .

The sets thus created can be handled as any other RECON sets, e.g.,

printed separately.

*Preceding Bulletin was No. 74-5

RECON operational problems may be directed to the RECON Coordinator

at the NASA Scientific and Technical Information Facility in College

Park, Maryland, (Telephone: FTS (301)982-6344, off-FTS (301)779-2121,

ext. 606 or 607). Other problems, suggestions, and comments may be

directed to Lill Brown or Van Wente (Telephone (202)755-3465).
q,

2

To make SEI_ECTs from Ekq°A_[D lists, one must insert the "_/" or "MN/"

prefixes before the "Enn" or "Rnn" reference numbers. Examples of

formats are as follows:

bMJ/E6

bMN/EI0

bMJ/RI-R3, R5, R7, R8

bMN/RI-R3, R5, R7, R8

All of the above are valid uses of this new capability.

It is expected that this new capability will enable RECON users to

obtain searches of higher pertinence for a given topic. The system

indexers attempt to assign Major and _nor terms based on the relative

importance of the indexing concepts contained in each document. Thus,

the Major/Minor SELECT capability provides the potential for improved

searches or two-level printouts.

MULTIPLE CITATION DISPLAY

A capability now exists to view more than one citation on the

screen at one time on the RECON display. This capability should not

be used if the complete citation (i.e. Format 2) is desired since a

complete citation usually requires the entire screen.

To use this capability effectively, one must first define a smaller

format using the SPECIFY FORMAT command. Any SPECIFY FORMAT in

effect during a search will, of course, affect both the Format 4

and the multiple citation d_splays.

To utilize this new feature, it is only.necessary to do the following:

1. Execute a valid SPECIFY FORMAT command.

2. Display the desired set in Format 5.

3- Page through the set.

Thus, the only real change to the present procedure is the use of the

DISPLAY in Format 5:

dl/5 (display Set 1 in Format 5)-

In the future we plan to make several new abbreviated fixed formats

available, which will eliminate the necessity of executing the

generalized SPECIFY FORMAT command.

OF POOR QUALITY

J,
-@

RECOH RESPO!TSE TI?._ VS RECON USAGE

3

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All RECON users share the desire for a more rapid response from the

system once ghe TR_CSMIT Key is oressed. We who plan development

activities for the system have been working on the problem from every

possible angle--beginning even in the early days when RECON was just

barely operational. These efforts have frequently been thwarted by

two main opposing forces, namely, the growth of the files (both the

normal growth and the increased number of file types) and the increase

in demand placed upon the system as evidenced by the number of commands

received and processed in a given day.

The following plot of RECON performance over a two-year period shows

that as RECON response time is reduced through system improvementsj

the demand placed upon RECON is increased thereby revealing a substantial latent demand. Use of semiannual averaging periodshelped

to smooth out some of the seasonal and operational variables. Data

for the second half of 1974, when added_ will show a further reduction in the average response time.

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No. 75-2

February 14, 1975

.

* * * RECON BULLETIN * * *

RECONFIGURATION OF COMMUNICATIONS LINES

If you're seeing your Friendly "Ma Bell" man more and enjoying it less,

blame RECON reconfiguration. Our AT&T long-line communication links are

being reconfigured to accommodate new customers; three new terminals at

Regional Dissemination Center in Los Angeles, Pittsburgh and Bloomington,

a terminal at DDC-Cameron Station, Va., and a terminal at the Federal

Energy Administration in Downtown Washington. In addition, the NASA STI

Facility will be moved to near Friendship Airport (Baltlmore-Washington)

probably in March, and new lines must be available at the time of the

move to prevent inordinate loss of service. The reconfiguration of RECON

lines and terminals was based on probable terminal use-rate and geographic

location, tempered by economy considerations. Pardon the Inconvenience_

Diagram is attached for new configuration.

MULTIPLE-CITATION DISPLAY REQUIRES PAGE

Following-up our announcement of the new Multiple-Citatlon Display in

the last RECON Bulletin, please note that you must use the PAGE command

to go from one page of a multiple-citation DISPLAY (Format 5) to another.

Neither the ITEM command nor the DISPLAY command will provide this

function.

PACEing may be done both forward and backward without difficulty.

Note also that, in the case of large sets, you cannot simply PAGE all

the way through the set. This limitation is because RECON sets up

only as many citations for the Multiple DISPLAY as will fit into a

limited computer work area. Depending on the fields you specify and

their contents, this number will usually range between 30 and 90

citations. To go beyond this point, that is to go beyond the first

30 to 90 citations you must proceed as follows:

Assume set number i contains 450 citations. When you

enter your first DISPLAY command the output will contain

a heading llke the following:

RECON operational problems may be directed to the RECON Coordinator at the

NASA Scientific and Technical Information Facility in College Park, Maryland,

(Telephone: FTS (301)982-6344, off FTS (301)779-2121, ext. 606 or 607).

Other problems, suggestions, and comments may be directed to Bill Brown or

Van Wente (Telephone (202)755-3465).

lll!_l__llllllllll|i i ! !
D

DISPLAY 01/5/1-7 of 87.

.where 1-7 are the set items shown on the screen and

87 is the total number of items you can readily PAGE

through.

If you PAGE through the group, the last output will contain a

heading like that below:

DISPLAY 01/5/84-87 of 87.

To continue PAGEing beyond this you must enter the following

DISPLAY command:

d1/5/88-450.

Your next output will have a heading similar to the following:

DISPLAY 01/5188-93 of 85.

where 88-93 are the set items shown on the screen and

85 is the total number of items you can PAGE through.

In this manner you may enter the set at any point and proceed

PAGEing from there. For example, if you wanted to see only

the last twenty items in the above set you would begin by

entering the following DISPLAY command:

dl/5/431-450.

Then you would PAGE between the twenty items, as appropriate.

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No 75-3

March 10, 1975

* * * RECON BULLETIN * * *

RECON OUTAGE

As many of you already know, the STI Facility is now

in the process of moving to a new location at Linthicum

Heights, Maryland.

The computer that serves the RECON users must be

moved, and the leased telephone lines used by the RECON

system must be re-routed. This will cause an interruption

in your RECON service.

Our current expectation is that RECON service will terminate on the evening of 13 March and resume about a week

"later. You will be notified by telephone at the time, and

the new telephone number for the RECON Coordinator will

be provided as soon as it is known.

RECON operational problems may be directed to the RECON

Coordinator at the NASA Scientific and Technical Information

Facility in College Park, Maryland, (Telephone: FTS (301)

779-2121 ext. 606 or 607) Other problems, suggestions and

comments may be directed to Bill Brown or Van Wente

{Telephone (202) 755-3465).

OF POOR QUALITY r.-"
No. 75-4

April 4, 1975

* * * RECON BULLETIN * * *

TELEPHONE NUMBERS FOR RECON COORDINATOR

The following numbers may now be used (FTS, Off Net) to contact

the RECON Coordinator, Mike Moriarty:

Baltimore, Maryland No. (301)-796-5300

Washington, D.C. No. (202)-621-1910.

Unless you are in the Washington Metropolitan area please use

the Baltimore number whenever possible. Using either number

you will get the switchboard operator at the Facility. You

must then ask for extension 286.

We have not yet gotten an FTS network llne for the RECON

Coordinator, However, we hope to have one soon, at which time

you will be notified.

TESTING OF FRONT-EI_D POLLING

Within the next week or two we will begin testing a front-end

polling capability that should speed response when fully opera-.

tlonal. This new capability will be tested during the mornings,

and the current program will be run during the afternoons and

evenings.

Hopefully, not too many problems will occur, but it is impossible

to tell. You will know when the new program is operating by the

return of a "RECEIVED..." message instead of the "PROCESSING..."

message provided by the current program. Please bear with us

during this test period, so that service may be improved in the

long run.

\

RECON operational problems may be directed to the RECON Coordinator

at the NASA Scientific and Technical Information Facility in

Baltimore, Maryland, (Telephone: (301)-796-5300 ext. 286) or

Washington, D.C. (Telephone: (202)-621-1910 ext. 286). Other

problems, suggestions and comments may be directed to Bill Brown

or Van Wente (Telephone: (202)-755-3465).

I lllllllllll|Iti | ! I
m

No. 75-5

May 5, 1975

* * * RECON BULLETIN * * *

NEW ABRIDGED USERS' MANUALS

You will shortly receive one hundred copies of the new RECON Users'

Manual (Abridged Version) under separate cover. This brief manual

is intended to serve as an introduction to the use of RECON by

Center personnel. It has been kept simple to encourage people to

try RECON. For this reason, a great deal of information is not

presented that could be. Let Norm McCabe know (202-755-3465) if

you would like additional copies.

This manual can not answer all of the questions a user might have.

The answers to most questions can be obtained, however, from the

larger version of the manual supplied earlier. Hopefully, by the

time the new user has need for such reference, he will already be

able to handle a search pretty much on his own.

Please let us hear about your experiences with this manual, so that

we may do a better job in preparing the next edition.

UPDATES TO COMPLETE RECON USERS' MANUALS

Enclosed with this RECON Bulletin you will find updates to the

complete RECON USERS' MANUALS issued earlier. Please insert these

updates in the correct locations in the manuals, so that they will

be as complete and up-to-date a reference source as possible.

UNPLUGGING OF TERMINALS AT NIGHT

Please do not unplug your RECON terminal over-night unless there is

some special local reason for doing so. (Note: Unplugging is no____t

the same as switching off the CRT and the teleprinter, both of which

ar.__eerecommended at night,) To unplug the units has several bad effects.

One is to increase the likelihood that the unit will malfunction.

Another is to cause slower response for other RECON users. Still a

RECON operational problems may be directed to the RECON Coordinator

at the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301)-796-5300 ext. 286) or Washington, D.C.

(Telephone: (202)-621-1910 ext. 286). Other problems, suggestions and

comments may be directed to Bill Brown or Van Wente (Telephone: (202)-

755-3465.

I| I llI[lllllllli[-i
2

third is to create false alarms at the Computer site to the effect

that either your terminal or phone line is out of order. A corollary

of this is that you are deprived of the constant monitoring of your

telephone line, your modem, and portions of your control unit that

takes place whenever RECON is operating.

If for some reason, you must regularly unplug your unit at night,

please let us know, and we will not attempt service every morning

until you have called to request it.

II i I I I ! I I ! 1 1 I 1 I i [| I!
No. 75-6

December 22, 1975

* * * RECON BULLETIN * * *

RECON }{AS A BRAND NEW CO?DtA_ND -- SORT

}{ave you ever wanted to print out a list of citations in the alphabetical

sequence of the authors' names or of the title? Well, now you can. This

will allow you to prepare bibliographies in some order that is other than

simply by accession number.

But, you must pay a price, and this is in time. The SORT com2nand does not

run fast. In fact, by current RECON standards, it runs ver_very slowly.

Typical sorting times start .at a minimum (for only a few citations) of

about twenty or thirty seconds, and they go up from there. For example,

sorting about 3,500 citations on the authors' names the other day took

over eight minutes.* Needless to say, with that kinH of time expended,

it is advisable that the number of citations sorted be kept to a minimum.

The advisability of keeping the numbers of citations sorted to a minimum

is even stronger when you consider that, the way the SORT command operates,

only one SORT can be running at any given time. So, if one user is doing

a long SORT, all other users are prevented from doing any SORT, regardless

of length. Because of this, we should not support the sorting of huge

numbers of citations, even if individual users are willing to wait indefinitely for completion. So, for the present time, we have set a limit of

five thousand citations per SORT. Of course, this number may be changed

in the future, as we gain experience with this new feature.

The use of the SORT command is relatively simple, and its syntax is

uncomplicated, unless you wish to place particular limitations on how it

works. However, since there is no command button available on the RECON

terminal for the SORT con_nand, you must enter the command in long-hand

by spelling out the word "SORT" (all caps). This must be followed by a

space, the number of the set you want sorted, a slash (/), the field(s),

and any other parameters involved.

In its simplest form, the SORT command could look like the following:

SORT 7/AU.

*We are compiling data on running times, and will distribute these in

the form of charts, as soon as they are complete.

RECON operational problems may be directed to the RECON Coordinator at

the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301)-796-5300 ext. 286) or Washington, D.C.

(Telephone: (202)-621-1910 ext. 286 ). Other problems, suggestions and

comments may be directed to Norm McCabe (Telephone: (202)-755-3465%.
2

This would cause the citations in set number 7 to be sorted in ascending

sequence (i.e. alphabetically) by the authors' names, and would result in

the creation of a completely new set, which could then be handled just

like any other set. That is, you can DISPLAY it, PRINT it, TYPE it, and

so forth. In fact, you could even COHBINE it with other sets, though the

results would not be too useful due to anomalies in sequencing. (The

CO}.IBINE command only works on the basis of merging items that are in the

same (Accession No.)order.

It is important to remember that the result of the SORT is a completely

new and independent set, which is in no way dependent on any other set

for its existence and/or use. Remember too, that the original set number

7 is not affected in any way and would still remain in its original

sequence.

Going further into the syntax of the SORT command, the general, complete

form is as follows:

SORT Se t/Field- 1, Order, Length/ Fie id-2, Order, Length/. . . Field-5,

Order, Length.

This general syntax is limited to the use of a maximum of five fields

for sorting. Further, no field can be sorted on more than twenty

characters. The order that may be specified is either ascending (A)

or descending (D), with the default being the normal ascending order

(i.e. A B C . . . Z) if the user does not specify an order.* If the

length is not specified, the length will be assumed to be either the

entire field or twenty characters, whichever is shorter.

Below we show a number of valid SORT commands, along with their interpretations.

SORT 2/RN

R_is will cause the citations in set m_ber 2 to be sorted in ascending

sequence by the first twenty characters of the report-number field.

SORT 12/CAT/AU/PDT

This will cause the citations in set number 12 to he sorted primarily

in ascending order by subject category, secondarily in ascending order

by the first twenty characters of the authors' names, and tertiarily in

ascending order by the publication date.

*Note that if a sorted field does not appear in a citation (for example,

if there is no author) that field will be treated as though it were filled

with blanks, and will thus be sorted at the very beginning of an ascendingorder sort (i.____e.before "A"). Conversely, _t would appear at the end of a

descending-order sort. _is affects only the field that is not present, so

that, if it is secondary, tertiary, et___c,it may have little or no effect.

,.
3

SORT 9/AU/ACC,D,3

This will cause the citations in set number 9 to be sorted primarily

in ascending order by the first twenty characters of the authors' names,

and secondarily in descending order by the first three characters of the

accession numbers.

SORT 6/AU,,10/ACC,,3

This will cause the citations in set nmnber 6 to be sorted primarily in

ascending order by the first ten characters of the authors' names and

secondarily in ascending order by the first three characters of the

accession numbers• Note that if you leave out the "A" or "D" you must

use tw___ocormnas in succession before the length indicator.

SORT 23/ACC,D

This will cause the citations in set number 23 to be sorted in descending

order by accession numbers. Since the accession number field is shorter

than twenty characters, the entire accession number field will be sorted.

Please feel free to use this new command, and let us know of any problems

or anomalies you might encounter.

REORGANIZATION OF CODE KSB

As many of you know_ the NASA Scientific and Technical Information

Office has undergone a reorganization during the past year. The

Systems Development Division and most of the Information Services

Division have been combined to form the Systems and Retrieval

Division (Code KSB) with Van Wente as Chief. Charles Hargrave is

Assistant Division Chief and generally oversees NASA literaturesearch procedures, the utilization of non-NASA data bases, development of the NASA Thesaurus, as well as the indexing and abstracting

procedures for STAR, IAA, SCAN, etc. Bill Brown continues to

supervise RECON system improvements and handle software problems.

Rex Talbert remains in charge of RECON communications development

and all ADP hardware projects. General questions related to the

addition of new terminals to the RECON System, the issuance of

RECON manuals_ and items in the RECON Bulletin should be directed

to Norm McCabe, who will serve to edit this issuance in the coming

year, hoping to make it more frequent and newsy. Input from RECON

users of information possibly useful to other users is solicited.

t
4

MORE AND LARGER SETS _tAY NOW BE ACCU_IULATED

Because we have obtained a large additional amount of disk storage

space with the new computer, it has been possible to double the

USERSET space for each terminal. This means that there is _ice as much

room for postings in sets you create. _ereas the limit on what you could

accumulate during a given search was a total of about II0,000 postings,

you may now accumulate approximately 220,000 postings before you will have

to begin releasing sets.

T_PE CO_,}IAhrDNO LONGER A PROBLEH

The system has been modified so as to permit users to execute as many

_fPE commands as they wish without causing any delays for anyone else.

Therefore, please feel free to make whatever use of the TYPE command

that seems most appropriate for you. We appreciate the forbearance

shown by our users during the period of difficulty.

SEASONS GREETING TO ALL

.°
,r

No. 75-5

May 5, 1975

i °

* * * RECON BULLETIN * * *

NEW ABRIDGED USERS' MANUALS

You will shortly receive one hundred copies of the new RECON Users'

Manual (Abridged Version) under separate cover. This brief manual

is intended to serve as an introduction to the use of RECON by

Center personnel. It has been kept simple to encourage people to

try RECON. For this reason, a great deal of information is not

presented that could be. Let Norm McCabe know (202-755-3465) if

you would like additional copies.

This manual can not answer all of the questions a user might have.

The answers to most questions can be obtained, however, from the

larger version of the manual supplied earlier. Hopefully, by the

time the new user has need for such reference, he will already be

able to handle a search pretty much on his own.

Please let us hear about your experiences with this manual, so that

we may do a better job in preparing the next edition.

UPDATES TO COMPLETE RECON USERS' MANUALS

Enclosed with this RECON Bulletin you will find updates to the

complete RECON USERS' _NUALS issued earlier. Please insert these

updates in the correct locations in the manuals, so that they will

be as complete and up-to-date a reference source as possible.

UNPLUGGING OF TERMINALS AT NIGHT

Please do not unplu=_ your RECON terminal over-night unless there is

some special local reason for doing so. (Note: Unplugging is not

the same as switching off the CRT and the teleprinter, both of which

are recommended at night ) To unplug the units has several bad effects.

One is to increase the likelihood that the unit will malfunction.

Another is to cause slower response for other RECON users. Still a

I

RECON operational problems may be directed to the RECON Coordinator

at the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301)-796-5300 ext. 286) or Washington, D.C.

(Telephone: (202)-621-1910 ext. 286). Other problems, suggestions and

comments may be directed to Bill Brown or Van Wente (Telephone: (202)-

755-3465.
f_

$&

third is to create false alarms at the Computer site to the effect -

that either your terminal or phone line is out of order. A corollary

of this is that you are deprived of the constant monitoring of your

telephone-line, your modem, and portions of your control unit that

takes place whenever RECON is operating.

If for some reason, you must regularly unplug your unit at night,

please let us know, and we will not attempt service every morning

until you have called to request it.
1976
No. 76-1

April 30, 1976

* * * RECON BULLETIN * * *

ON-LINE ABSTRACTS

Abstracts are now displayable on RECON for STAR and IAA issues from

the present time back through 1972. They may be viewed by simply

PAGEing through the normal format 2 display. (They usually occupy

the second and/or third pages.)

The abstracts are also being included in format-2 print-outs of

citations. Since this greatly increases the amount of_printing,

it is more important than ever that you not print unnecessarily

large numbers of citations.

We would like your con_nents on the usefulness of the abstracts for

display and for print-out.

In the near future, we expect to make the abstracts text-searchable,

in the manner used for titles etc. in the NALNET collection (F).

This will be done as an experim_nt, since both its usefulness and

its effects on the system are unknown at present. We also hope to

make report titles text-searchable at a later date.

EXPLAIN COMMAND HAS BEEN CHANGED

The good old EXPLAIN command has just undergone a substantial change.

It is now possible to use the PAGE command to get from one screen-full

to the next.

In addition, new arguments or operands have been added, which should

make the command more valuable for our users. Muchnew information has

been added directly from the RECON User's Manual. Please note, however,

that some discrepancies do exist, such as references to figure numbers

that are not available on the terminal. In time, these discrepancies

will be removed from the EXPLAIN presentations.

In using the new EXPLAIN it is possible to enter the reference number

following the term in the EXPLAIN presentation instead of entering the

entire term. Thus EXPLAIN RECON can be entered either as oRECON or as

oX310.

RECON operational problems may be directed to the RECON Coordinator at

the NASA Scientific and Technical Information Facility in Baltimore_

Maryland, (Telephone: (301)-796-5300 ext. 286) or Washington, D.C.

(Telephone: (202)-621-1910 ext. 286). Other problems, suggestions and

comments may be directed to Norm McCabe (Telephone: (202)-755,3465).

I I llllilllllll|ii I 1
NEWS FEATURE

In the next few days we expect to have a NEWS feature operational.

This NEWS feature will provide current information on system and file

status. It will be presented as a by-product of the BEGIN SEARCH

command.

ASRDI SAFETY FILES ON RECON

Two of the ASRDI Safety Files are available on RECON. These are the

Mechanical Structures and the Fire files. Both are available in file

collections I and D. The inverted file mnemonics are as follows:

2

..

ASTI

_s/

L_S/

A_/

Subject Term (This is the Default if no mnemonic

is entered (File Collection I only)).

Major Subject Term

Minor Subject Term

Abstract (Text)

Links (Text)

All Text Fields

APD/ Publication Date

AU/ Author

RN/ Report Number

CO/ Corporate Source Code

These inverted fields may be used in the same manner as usual. That is,

they may be EXPANDed and SELECTed from to produce sets and combinations

of sets.

II ii I I ! ii i 1 1 1 1 I | i i [ !_
4 •

NASA THESAURUS

The 1976 Edition of the NASA Thesaurus (NASA-SP-7050) has just been

published. Copies have been distributed to each NASA/RECON terminal.

(If you do not have a copy as yet, please call C. W. Hargrave (202) -

755-3462).

This Thesaurus edition has two new features that might prove useful in

preparing RECON searches. First, an embedded hierarchy feature has been

added to the Alphabetical Listing (Volume i) that enables the Thesaurus

user to view for each term the actual narrower-term and broader-term

relationships. The introduction on pages vi and vii to Volume 1

describes this in greater detail. (Please note, however, that the RECON

Thesaurus display still lists the narrower terms and broader terms in

alphabetical order in each category.)

Another feature is the Access Vocabulary (Volume 2) that provides access

(entry) terms to permutations of multiword terms, and pseudo multiword

terms, and to other non-Thesaurus terms. For example, RADIOCH_MISTRY

is entered in the Access Vocabulary also at"Chemistry, Radio" and

AERODYNAMIC BALANCE is entered also at '_alance, AerodynamicS' The

addition of the Access Vocabulary to the RECON expand or display file

is now being studied.

The new Thesaurus contains all postable and non-postable terms approved

through May 31, 1975. The vocabulary expand on RECON is more current

than the Tnesaurus as the vocabulary expand is updated monthly. The

Thesaurus user is also advised to note a change that resulted from the

editing process. Near-alpha Related Term cross references have been

removed in many cases. For example, DISTILLATION no longer cross

references to DISTILLATION EQUIPMENT. Note that the RECON user will

still see the near-alpha postable terms when the vocabulary expand

cormmand is used. The range-search feature maybe used to select nearalpha postable terms. Your co_nents on the new Thesaurus are solicited.

.

!

\

ill11Eililllllti l ! 1
PRECED!;'IS. PA: ........., ,...:,TFILMZD No. 76-2

June 28, 1976

* * * RECON BULLETIN * * *

(TERM) FREQUENCY CO>DL_\_ NOW AVAILABLE

The (Term) FREQUENCY Command proposed sever_l years ago has now been

implemented. The long delay is a result of (I) the ]ow priority assigned

it re]ative to our operational problems and; (2) the conrnand requires a I

SORT operation which, until recently, we simply did not have.

V

_nat It Does:

Y

/

The (Term) FREQUENCY Command provides the user with a list of subject

terms used in a set in descending order of frequency of use within the

set. For example, if the user creates a set by SELECTing the ter_

RUBIDIUM, and then performs the FREQUENCY Co:_nand on all terms in that

set, he will see the following on his screen:

TEF._H FREa4UEHF:"/ IaI::_:TE'II:UTII-JH- :SET oi - 26:-: C:ITRTIOH"--.: - azInzo41; --':-:UE:_;EF:] "-ER.H7:

,r-- F_._-F ;SLII-:._IEC: T TERt, I FEIEC! F 0 1 0 OPT Io-:Rl_PLIHP I r.IG

F o:m;'li F.:I_I._::I ]]I l_li,] 0 ;3.'T' 0 F 01 1 :-:T R [] H T I Lit'!

0 0

0 0

F 00 e' C:E :-: I U M 00. 7 F 0 1;=' HRGHETDHETER:-:- 0 0

F 0 0 :.7:" F'DI'll:- :-. I UP'I 0067' F 01:3 F E:E o-!U E H C:',' :S:T R E:I L I T"," 0 0

F 004 r.IE T R L '-.'R F'FIF::,-.: 0042 F014 TEMF'EF:RTLIIq.,E EFFE CT:':: 00

_-'11 -r=..... FE:EC!LIErfl::Y :-:TRHDRRD:-: 00 :-' 9 F 015 L R :-:E R [] I_1TP I_1T:S: 00

F 0 nE RL.KRL I r,IETFiL:--.: 00:-::-: F 016 LLIHRR ROC:F:::::_: 00

F Ca07 R T O i"I I C C L OC:F:::- 00:=:2 F 01 ,--' LIHE :-,:F' E C:T F.:lq 00

F 00 ::: S [] D I U I"I 00:=:2 FOIL:: Rt::-:DF:F'T I DM :-,:F'E C:T F:R 00

F 009 COHFEF:ErtCE:-: . 0027 F ,:,1 '? C:E:!-:I IJH :..'F_F'OF.: 00

EttTEF: • -

RECON operational problems may be directed to the RECON Coordinator at

the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301)-796-5300 ext. 286) or Washington, D.C.

(Telephop.e: (202)-621-1910 ext. 286). Other problems, suggestions and

comments may be directed to Norm, McCabe (Telephone: (202)-755-3465).

ORIGIN:\L J,-_,L_EIS

OF POOR QUALITY
PRECEDIN.:"I pi...: ..... ;( i"OT FILMED

IF

What this i:Idlcates is that the term RUBiDI_,.:so SELECTed appears in all

items in the set; that the next ;:lest ...... o_ _:, api;earing ter;n is C_ESIb?;,used

77 times; that the next Lost often appearing term is POTASSIGd, used 67

ti:.cs; that the next mcst often a_.pearinc term go '?"_- _ ,-._J._.b VAiORS_ used 42 times;

and so forth. Another exsJnple: having SELECTed the set P.&P_EEARTH ELEMENTS,

and having performed the (Term) FREQUENCY Con_nand on the entire set, the

following will appear on the screen:

P)

TERM _RECtlJEHF?," ],I:-:TF.:IE:IITIFIH - :-:ET 02 - 4E:4 F:ITRTIE]H3 nc,_:.4:-: --. I_::.J=,--T TEPt.I--

I

FEF 'i :-:LI!q_IEC T TERM FRE,-! ,J

i-:O01 F.:FIF.:E EHRTH ELEt'IEHT:.-.: ....... 0491

F 00E' FIP.LIHDFIFtCE ....... 0059.

F 00:7: C[]HFEREMCE::-..- 005:-:

FO04 LI_IHFtR F.O,_.I....._. 0047

F 005 TF:FICE ELEMEHT::: 004 T

F h OE BFI:-:FILT 0044

POOT CHEM I CFIL CFIMF'FI:7..I T I OH 0044

FhO:- L LIHFIF.: SDIL hI]44 I_ - -

F 909'; TRFtH:-: I T I BH t'IETFIL:- 00:--:5

ErtTER :

f

F 01 0 CR",':-:TFIL :-:TRLICTLIRE ..........

FOIl I'tEl_lTl_'Ol"t FI'-:TI'v'FITIDH RttF_L'-,":_:_

:3:

FO:I8 LUHFtR CFlt'IF'O:'-.:I T I Ot-t

FOI:B FIDDITI I: E- =. _,

F014 bHOtL - ' .... r_ITE:-:

F015 CR",":_.:TRL LFITT ICE:-:

F 016 EII_ERG"," TRFIH:Z:FER---

FO! ,.-" t'IETEDRITIC COMF'O:_:ITIFIH ....

F 01 :-: . :"--:I HGLE CR",":-:TFIL:S:

MORE

F

0 (,:-

0 ':,7

0 0:-:

OOS

002

00_:

OOP

002:

002::

Thus, the user can see which terms tend to be used most often in any

set, and which terms tend to coLoccurwith others. This command may be used

with sets resulting from COV_Ii_ operations and with sets SELECTed from

Author. Contract Nos., or anything else.

_j l_,._ .... • •

OF POC'_ :::..'/...-i_q
It is possiOie to PAGE throush the entire list of terms, and to SELECT

any term which appears by using its "F" n'_nber (such as "SELECT FO09"). Any

such SELECT will, of course_ have the effect of SELECTing al__llitems posted

to _hat ter,n.

Also, please note that terms that do not occur at least twice in a set

are discarded by the FREQUENCY Co_mnd.

A Redisplay option is also available. It inables the user to

redisplay the previously created (Te_c.) FREQUENCY Display without having

to invoke the full (Term) FREQUENCY Co_nd. The response time for the Redisplay option is considerably less than the full (Term) FREQUENCY Display

option.

When to Use It:

The purpose of the FREQUENCY Command is to enhance the effectiveness of

RECON searches by providing the user an additional search tool. _qe function

of the command is to produce a frequency distribution for the subject terms

in a given set of accessions. During the course of a search, the user produces sets by means of the SELECT, CO.',_II,_, LI},[IT, or KEEP Commands. The

user determines that it would facilitate the search to discover %friar subject

terms occur most frequently within a given set. It is clear to the user that

at least on£subject term--the term for which the set or a predecessor set

was selected--is present in every record. To achieve more than this trivial

informatio% the user must utilize the FREQUENCY Command. _ne command will

produce a frequency distribution of subject terms contained in the linear

records identified by the postings in the set. The user _ill learn from the

distribution whether terms are frequently or infrequently associated. This

ORIGINAL FAGE IS

OF POOR QUALITY

• ,r
will enable him to achieve higher recall or higher precision in his search.

The intended result is a more rapid, co:rprehensive and eITective search.

r

How to Use it:

Since there is no command button for the (Term) FREQUENCY Command, the

user must enter the command from the keyboard. To do so, simply type in the

conmmnd name (FREQUENCY), or abbreviation (FR or FREQ), followed by a space,

followed by the number of the set. This may be optionally followed bya

designation of the kind of terms (ALL, [._, or I,K_)in which the user is

interested. This may be followed by the number of items in the set that the

user wishes to sample (up to a maximum of 500). The set number and optional

fields must be separated by slashes (/).

The following are samples of valid FREQD_NCY Commands:

7/m/250

5/A /500

FR

FR 3

F Q NCY 46//100

The following are samples of invalid FREQUENCY Co,_mands:

(500 is assumed)

(ALL/500 is assumed)

(ALL is assumed)

FR5

i

FREQUENCY 1S/200

Ft_ 5

(No space between the command and

the set number)

(Need a double slash when type is

not entered)

(Invalid convnand abbreviations;

onl$ _ FR and FREQ are valid)
Not e that the (Term) FI_:Q[]C_CY Co__mand sorts subject terms in the group

of citations sampled. Tnas, for fifty citations, it may have to sort more

than five hundred terms. Conse_aently, execution time for the (Term)

F_u_:J_Y uo:r_.ar_awill be lon_ _you snou±d ex ct to _it at leas_ _k)

seconds for a sm,lp!ing of 500 terms).

If you wish to perform a (Term) FREQUENCY Command on a large set, not

all citations will be used. A maxim_ of 300 citations is current]_y in

effect. _[qis results in a sampling of citations from sets of greater _han

500 items.

Redisplay Option:

_ne Redisplay option is used to display the first page of a (Term)

FREQUENCY Display previously created in the user's search. This option is

much more efficient and quicker than completely re-creatin_ the display. In

order to invoke the Redisplay option, the user enters the command code (F,=(EQUENCY, FI_Q, or FR) followed by at least one blank; then the set number

followed by an "_". The following is an example of the FREQUENCY Redisplay

option:

FR 3R

The user may request Redisplay of the (Term) FREQUENCY Display after

intervenin 8 commands, without requiring complete re-execution of the original

I

I

FREQUENCY Command. Each frequency display will be retained in intermediate

ORIGii_AL. _,_E 1,5

OF POOR QUALITY
storage _util the next DISPLAY or F_X_%UE;;CY Display is _itten over it. In

order to call for redisplay of _ne uost recer._ frequency display to the

terminal, the user will enter a FREQb_NCY Co_and in redisplay "R" format,

as aescrib_d a0ove, i_edispiay of a frequency _disp±ay may be invoked for a

set that has been released, provided no other FR_Qb_Z_,CY or DISPLAY Co_ds

have intervened. The alternative is to local print the frequency display

prior to invoking a DISPLAY or another FRZ_QUENCY Co_nd, to preserve the

frequency display for later use.

Note that there are a few irregularities still existing in the (Term)

FREQUE.'_CY Display. _nese anomalies will not seriously effect the (Term)

Frequency Display res_alts and will be corrected in the near future.

l"-
I

ESTI_,_kTii[G SORT-EXEC UTIU,-',! TL._S

In order "to provide a basis for esgk:.aLin'g gOAT execution ti_es prior

to actually entering a SOI_ Coz--_and, execution time statistics for SODT

op@rations on sets of varying sizes and numbers of sort fields were aect--"_ulated over a one month period. These statistics have been charted and the

results are herein presented. Due to the relatively small sample size,

these results should be used only for making generalized estimates and should

not be considered accurate in all possible cases.

The data sample was generated by repeatedly sorting sets of selected .

sizes on a daily basis. Set sizes sorted varied from i00 items to 4600

items. The n_aber of sort fields varied from i to 5 fields. It _ms fo_ud

that the number of sort l'ields has no significant effect on SORT execution

time.

Figure i is a graphical representation of the restult. All points on

the graph are plotted on a rectangular coordinate system. In the graph,

the number of items contained in the set being sorted is plotted along

the y-axis. SORT Co _m_and execution time in minutes is plotted along the

x-axis.

_ximum and minimum execution times for each set in the sample were

determined. Successive points were connected to form an execution time

interval. This time interval, illustrated in Figure 1 as the difference

between the maximum execution times and the minimum execution times, defines

r

ORIG!I;AL PAGE _S

OF POOR QUALJTV
e,

the range. The range is a measure of the variation in execution time for

each set being sorted. _lis variation is due to system load at the t_.u:e

whe:l the SORT Command was bein_ executed.

r

FLCd._ :

_]e folloving paragraphs illustrate the use of the graph to estimate

the amotmt of t_e it will take to execute SORT Commands.

Suppose you have created a set of citations indexed to the subject term

GAS TJ_031_S and have received the following _essage:

SET REC. OCC DESCRIPTION OF SET

1 B216 2216 ST/GAS TURBIICES

You may want to view citations or accession numbers in some order other

than by accession number, for example, in an order alphabetized by

author's name or by report number. You can sort the set as follo%'s:

sORTIIAuI 

This co_,mand _-ill cause the citations in set number i to be sorted

primarily in ascending sequence by the author's name and secondarily

in ascending sequence by report number.

You may use the graph of Figure 1 to estimate the execution time for

sorting your set of 2216 items. To do so, locate the set size on the

y-axis. Extend a llne from this point parallel to x-axis until it intersects

the curves. The two intersect points represent the minimum expected execution

time (_hich is 8.2 minutes). Consequently, execution time may vary by 3-3

minutes depending on the system load.

_._ _ :- , .

O_ _'_

, r
0

0 0 0

0 0 0

i • i i | , , l i

Number of Items

p

O_ 0 _"

0 0 0

0 0 0

P_

CO

0

0

t,o

0

0

O_

0

0

0

0

0

._-

0

0

LCO

0

0

-<

/

-rl

G-)

rn

flt

t'1

•- 0"_

rT

0

--4 --u

i.

3

Co

C

cl-

(ID

_n tO

V

0

P,3

X
1977
No. 77-1

April 29, 1977

* .... ,, ,v RECON BULLETIN * ..... ,, ,,

COMPENDEX FILE NOW AVAILABLE

RECON terminals located at NASA Centers (and at JPL) now have the

capability to search the COMPENDEX (Engineering Index) data base.

Others will not be able to access this information due to the agreements required by the vendor. The period currently covered is

January 1969 through June 1976. Updating will continue.

Access and use of this data base are relatively simple. First, you

must select File Col]ection _ during the BEGIN-SEARCH operation.

Then, you may search the file using the fo]lowing mnemonic inverted

file prefixes for your commands.

Mnemonic

Prefix Meaning Comment

EAU/ Author Authors are not in a controlled format Complete

given names, or any other

variation may be present.

ETL/ Title

EHD/ Main Subject Heading

Text searchable field of

all (nontrivial) words in

titles.

Text searchable field of

all (nontrivial) words in

the Main Heading (controlled

vocabulary).

RECON operational problems may be directed to the RECON Coordinator at

the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301) 796-5300 ext. 286) or Washington, D.C.

(Telephone: (202) 521-1910 ext. 286). Other problems, suggestions, and

comments may be directed to Norm McCabe (Telephone: (202) 755-3465).
No. 77-1

2

Mnemonic

Prefix

ESB/

Meaninq

Subject Sub-Heading

Comrnent

Text searchable field of

all (nontrivial) words

in Sub-Headings, indicative

of the most important aspect

of Main Subject Heading

(controlled vocabulary)

EFL/ Free-Language Terms Text searchable field of

a11 (nontrivial) words in

Free-Language Terms (i.e.,

noncontrolled vocabulary)

ECR/ Cross-Reference Terms Text searchable field of

(controlled vocabulary)

subject headings and subheadings that are not the

main subject entry.

ETX/ All Text All words in all text

searchable fields. Can

not be phrase or proximity

searched. This is the

default (automatic) option

if n._ooprefix mnemonic is

used.

The relationships between the Main Heading (EHD/) field, the Sub-Heading

(ESB/) field, and the Cross-Reference Terms (ECR/) field are as follows:

I. The Main Heading (EHD/) field and the Sub-Heading (ESB/)

field, taken together, represent the principal subject

entry for the citation.

The Main Heading (EHD/) itself is the principal MAIN Subject

taken from the publication, Subiect Headincis for Enclineerin q

(SHE_. The Sub-Heading (ESB/), taken by itself, is the most

important aspect of the Main Heading (EHD/), and is taken
from the Sub-Headings contained in the publication, Subject

Headinqs for Enqineerinq (SHE).

2. The Cross-Reference (ECR/) field represents secondary subject headings for the citation. The Cross-Reference (ECR/)

field is composed of a Rain Subject heading taken from the

SHE:, and possibly a related sub-heading taken from the SHE:.

3. The Main Heading (EHD/) field and the Sub-Heading (ESB/)

field each may occur only one time per citation since,

taken together, they represent the most important subject

entry for the citation.

The Cross-Reference (ECR/) field may occur several times,

and may thereby represent a number of subject entries of

lesser importance.

A copy of the publication, Subiect Headinqs for Enqineerinq (SHE), will

be provided each location under separate cover. This publication is

the authority for the COMPENDEX controlled vocabulary used for subject

indexing.

The table below is the entire list of fields contained in COMPENDEX citations. Field numbers and mnemonics for RECON SPECIFY-FORMAT use are also

given.
NO.

1

2

3

4

5

6

7

8

9

1o

11

12

13

14

15

16

17

d......._e Co

ACC

EID

MPN

ITM

CDN

MUR

UTL

HED

SUB

AU

PAA

CIT

CAL

CRT

FLT

ABS

DDT

Field

ACCESSION NUMBER

ENGINEERING INDEX DOCUMENT NUMBER

MONTHLY PUBLI CATION NUMBER

ITEM NUMBER

CODEN DESIGNATION

HI CROFICHE CODE

TITLE

MAIN SUBJECT HEADING

SUBHEADI NGS

AUTHORS

AUTHOR AFFI LIATION

CITATION

CARD-A-LERT CODES

CROSS-REFERENCE TERMS

FREE-LANGUAGE TERMS

ABSTRACT

DELETION DATE
•A., .A. RECON BULLETIN ..k ._. _'_i._"_.

No. 77-2

/'lay 4, 1977

FREE-TEXT SEARCH OF ONLINE ABSTRACTS AVAILABLE

It is now possible.to do free-text searching of the online STAR and .

IAA abstracts. Although not all available data (i.e., 1972 - present)

are yet inverted, the most recent ones are, and most of the total is

available.

Additions are being made as computer time permits, so that the file Is

growing and should be complete for the entire 1972-77 period within a

few more months.

There are actually three separate fields that are available for text

searchingp these are the Analytic Item, the Analytic Note, and, of

course, the Abstract fields. There is also the capability to search

all three fields at once.

Required mnemonic prefix codes are as follows:

Cod__._e Field

AI/ Analytic Item

AL/ Aria 1yt I c Note

AX/ Abstract

TX/ AII Text

(All i:hree of

above)

Comments

NOTE: Phrase searching

and proximity searching

cannot be performed using

the TX/ prefix.

RECON operational problems may bedirected to the RECON Coordinator at

the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301) 796-5300 ext. 286) or Washington, D.C.

(Telephone: (202) 621-1910 ext. 286). Other problem s suggestions, and

comments may be directed to Norm McCabe (Telephone: (202) 755-3465).
. No. 77-2

2

The free-text search capability described here works the same as the

free-text search capability available for so long with the NALNET files.

Phrase and proximity searching is the same as wlth NALNET, and the

restriction to slngle-word searching for all text fields combined also

Is the same.

FULL BEGIN-SEARCH+IS REQUESTED FOR DIAL-UP USE

It would simplify the work of the people at the computer site and assure

more valid statistics if all dial-up users would always do a full BEGINSEARCH rather than a BEGIN-SEARCH BYPASS. A simple identification Is

plenty. We would appreciate your help on this.

USE ONLY FOP,HAT 4 FOR SPECIALLY FORHATTED OVERNIGHT PRINTING

Please use Format _ in conjunction with the SPECIFY-FORHAT command for

specially formatted overnight prints. Although Format 5 (the multiplecitation display format) is useful for online viewing of more than one

citation at a timep it Is not available as a PRINT format. Use Format

4 for PRINT_s, and you will receive the same output format as that specified for Format 5.

°
I c_,_ _ May 4, 1977

_, * RECON BULLET IN **

CALL FOR PAPER

We have been receiving a number of comments and complaints concerning

RECON operation, usefulness, and new capabilities. However, most of

these have been by telephone and through third parties, and thus tend

-.

to be vague.

We are most interested in our users' problems, requirements, and even

desires. But we want the most accurate information possible regarding

them. Therefore, we are asking for your cooperation.

If you use RECON, please, please take the time to sit down and commit

the followi_g kinds of information to paper:

I. Approximately how much you use RECON yourself.

2. What kind of terminal you use (Bunker-Ramo or other).

3. What you consider its worst problems.

4. What you consider its worst limitations.

5. What you consider its greatest inconvenience in use.

6. What you consider its best features/capabillties.

7. What you use It for most.

8. What you would like to use it for most.

RECON operational problems may be directed to the RECON Coordinator

at the NASA Scientific and Technical Information Facility in Baltimore,

Maryland, (Telephone: (301) 796-5300 ext. 286) or Washington, D.C.

(Telephone: (202) 621-1910 ext. 286). Other problems, suggestions, and

comments may be directed to Norm McCabe (Telephone: (202) 755-3465).
PRECEDINGI _,,_; L _'',i'L',_' I'_OTFILMED

9. What additional capabilities you would like to see

added to it.

10. Anything else you think we should know about oy_o__Euse

of the system.

Please do not feel constrained to answer all of the above, but only

let us have your specific ideas. Any format will do.

We do not want a unified, staffed position of your organization, t_e

want the ideas and problems directly from the working level, that is

from the people who actually push the buttons.on the terminal, if

possible without editing.

If management-level input is felt to bea necessity, please feel free

to send it on to us, but please identify it as such.

Please send this information to Bill Brown, Code KSB, NASA Headquarters,

Washington, D. C. 20546.
NASA/RECON BULLETIN No. 77-4

November 4, 1977

CONTENTS

New RECON Bulletin

METADEX File Now Available

Data Tagging and Flagging Project

The RECON NEWS Feature

Title Searching to be Available

PAGE

1

2

3

5

6
No. 77-_

1

NEW RECON BULLETIN

Despite its being numbered 77-4, this is the first issue of a new-style

RECON Bulletin. The new version will be more frequent and more "newsy."

It will include items about RECON events while still in their planning

and developmental stages and will give more feed-back about how RECON is

doing. In addition, the Bulletin eventually will be expanded to cover

related information about the rest of the NASA scientific and technical

information system and about RECON-related matters at other places.

We are particularly anxious to make the RECON Bulletin a medium for

sharing information between users. Please submit any and all such sharable

items you may have to Norm McCabe at the address below (always given on

the first page of the Bulletin).

Of course any comments you may have about RECON, whether general or specific,

are always welcome.

RECON operational problems may be directed to the RECON Coordinator at the

NASA Scientific and Technical Information Facility in Baltimore, Maryland,

(Telephone: (301)-796-5300 ext. 286) or Washington, D.C. (Telephone: (202)

621-1910 ext. 286). Other problems, suggestions and comments may be

directed to Norm McCabe (Telephone: (202)-755-3465), Code KSB, NASA

Headquarters, Washington, D.C. 20546,
2

METADEX FI LE NOW AVAILABLE

RECON terminals located at NASA Centers (and at JPL) now have the capability

to search the METADEX (Metals Index) data base. This data base represents

the monthly index of metallurgy and metals, published by the American Society

for Hetals and the London Institute of Metals. Entries are selected from

more than l,O00 journals, reports, and proceedings. The period currently

covered is January 1976 through August 1977. The METADEX file will be continuously updated with current data through calendar year 1978. In addition,

METADEX back file data for the years 1966-1975 will be added to the file

during the next several months.

Access and use of this data are relatively simple.

File Collection K during the BEGIN-SEARCH operation.

the file using the following mnemonic codes.

First, you must select

Then, you may search

Cod____e Fie Id

MAU

HTL

MDR

MAD

MTX

Author Index

Title (Text)

Descriptors (Text)

Alloys Descriptors (Text)

All Text

The table below contains the entire list of fields contained in METADEX

citations. Field numbers and mnemonics for RECON SPECIFY-FORMAT use are

also given.

No.___. Cod____e Field

!. ACC

2. MID

3. UTL

4. AU

5. CIT

6. DCR

7. ADC

8. DDT

Accession Number

Metals Index Document Number

Title

Author

Citation (Document Source)

Descriptors

Alloys Descriptors

Deletion Date

COMPENDEX is also online. For information on COMPENDEX searching, refer to

NASA/RECON Bulletin 77-I, dated April 29, ;977.
3

DATA FLAGGING AND TAGGING PROJECT

The NASA Scientific and Technical Information Office, with support from the

National Science Foundation, is conducting a Data Tagging and Flagging

Experiment aimed at improving users' access to the numeric data reported

in the aerospace literature.

All accessions in the following subject categories for 1977 STAR/IAA Issues

05 - lO have been analyzed for numeric data content: 02 Aerodynamics: 24

Composite Materials: 26 Metallic Materials: 27 Nonmetallic Materials: 71

Acoustics: and 74 Optics.

Data summaries and data terms have been produced for essentially all

accessions in these categories, for a total of 1618 accessions with

summaries. The standard data summary consists of three elements:

(1) Narrative statement, (2) Listing of major data variables, and (3)

Summary of data representations (figures and tables). Special data

summaries are prepared for accessions to documents containing either zero

numeric data or excessive numeric data. The data summary immediately

follows the abstract. In addition, data terms, utilizing the NASA Thesaurus

terminology, have been derived from the major variables listed in the data

summary. The data terms appeared in the subject index to the above-mentioned

issues, but were not uniquely labeled.

77Nl_oBk)*l ISSUE S PAGE 67S CATEGORY 7/J NASA-CR-ISDI17

I TEKB-29S_9- FR I-VOL- 2A

UNCLASS I F I £D DOCUHENT

SPACE TELESCOPE OPTICAL TELESCOPE ASSEMBLY/SCIENTIFIC INSTRUMENTS.

PHASE I PRELIMINARY DESIGN AND PRDGRAN DEFINITION STUDY. VDLUHE 2A

FOCAL PLANE CAMERA FINAL REPORT

ITEK CORP., LEXINGTON, MASS. AVAIL.NTIS HC AO0/HF ADI

/*SPACEBDRN( TELESCOP[S/*TRADEOFFS/ ELECTROMAGNETIC FIELDS/

FOCUSING/ LENSES/ HIRRORS/ OPTICAL

[_ IPHENT/**C00L i NG/**CY CLES/**D I A_qET [ RS/**MOOULAT I ,m

ON/**RE FRAGT I DN/eITEMPE RATURE MEASUREMCNT/**T IHE/**UAVELENGTHS

AIM AUTHOR

ADS TRADE STUDIES WI[RE CONDUCTED TD ENSURE THE OVERALL FEASIBILITY

OF THE FOCAL PLANE CAMERA IN A RADIJU. MODULE. THE PRIMARY VARIABLE IN

THE TRADE STUDIES I/AS THE LDCATION DF THE PICKOFF MIRROR, DN AXIS

VERUS OFF-AXIS. TWO ALTERNATIVES WERE {I) THE STANDARD

t,ELECTRDHAGNETIC FOCUS) SECO SUBMODULE, AND (2) THE MOO 15 PER_NENT

HAGNCT FOCUS SECO SUBMODULE. THE TECHNICAL AREAS DF CONCERN WERE THE

PACKAGING AFFECTED PARAMETERS OF THER.U.AL DISSIPATION, FOCAL PLANE

ODSCURATION, AND IMAGE QUALITY.

DATABUMMAIIV _ SUH ENCIRCLED ENERGY AND POINT SPREAD FUNCTIONS OF THE FOCAL PLANE

CA/4ERA AT _2._ HH; VARIABLES ARE RELATIVE INTENSITY, IKAGE DIAMETER,

RODULATION TRANSFER, CYCLES, TIHE, INOEX OF REFRACTION, WAVELENGTHS,

CL_OLING CAPACITY, TEMPERATURE DIFFERENTIAL; 2) FIGURES INCLUDE NUMERIC

DATA.

DATA TI FlUS

kPmceck_ I_

doubae ouner_k_

RECON Sample of a Data Flagged and Tagged Accession
IW_,J. # J _l

h

Data Tagging and Flagging Project (Cont)

The data terms and data summaries may be searched on NASA/RECON as follows:

a) Data terms only may be searched by using the prefix DT/.

The standard (default) subject term file contains data

terms in addition to major and minor terms. Thus, use

of thls standard file without specifying DT/, MJ/, or

tiN/ will yield all three types of terms as posted.

b) Data summaries are not uniquely searchable on NASA/RECON.

However, the narrative statement and the major data variables

within the data summary may be text searched using the

prefix DS/.

c) Of course, both of these may be text searched (along with

abstracts, etc.) by using the "all text" prefix, TX/.

Field numbers and mnemonics for RECON Specify Format for the data terms

and data summaries are listed below:

NO. CODE FIELD

42 TRM DATA TERMS

47 SUM DATA SUMMARY
THE RECON NEWS FEATURE

News of interest to NASA/RECON users is available through the RECON NEWS

feature. NEWS is displayed automatically following a full BEGIN-SEARCH

command or can be obtained by entering an EXPLAIN command with the NEWS

operand.

Presently, the NEWS capability is limited to a maximum of 800 characters.

Plans are to update the NEWS feature as often as daily.
TITLE SEARCHING TO BE AVAILABLE

Following completion of the file loading of STAR and IA._A_Aabstracts as

text-searchable fTles last June, our programmers and file managers have

been working on a sTmilar capability for the titles of items. Extension

of title searchTng back to 1962 data (as opposed to 1972 for abstracts)

has been a complicating factor, but this new capability is currently

planned for RECON users in December 1977.
1978
Recon Useri's Bulletin

_lational Aeronautics and

Jace Administration

Scientific and Technical

Information Office

78/1

FEBRUARY 1978

CONTENTS

NASA, DOE Share Systems

How To Get Hore Copies

RECON Now Searches Titles

Teleprinter Repairs at Bunker-Ramo Statrons

Using Lockheed, SDC

Online Data Bases

.,SA, DOE Share

Systems

Interconnecting Federal information systems has long been a dream.

As a first step, NASA's Scientific and Technical Information Office

and DOE's Office of Technical Information have agreed to offer

mutual dial-in access to each other's RECONs through the exchange

of passwords. Phase I of this arrangement provides such access to

six NASA locations, which are Ames Research Center, Lyndon B.

Johnson Space Center, Lewis Research Center, George C. }_rshall

Space Flight Center, Headquarters, and the Scientific and Technical

Information Facility.

We extend welcome to new users at six DOE installations. They are:

Argonne National Laboratory, DOE Technical Library, Lawrence

Berkeley Laboratory, Lawrence Livermore Laboratory, Sandia Laboratories, and DOE Technical Information Center.

How To Get

Rore Copies

Starting with this issue, 3 copies of the NASA/RECON Bulletin will

be sent to each NASA/RECON terminal location. If you would like to

have more copies, fewer copies, copies sent to a different address,

etc., please make your desires known to Norm McCahe, NASA HQ,

Code NST-6, Washington, D.C. 20546 (AC 202-755-3465).

RECON operational problems may by directed to the RECON

Coordinator at the NASA Scientific and Technical Information

Facility in Baltimore. Maryland. (Telephone: (301)-796-5300

ext. 286) or Washington. O. C. (Telephone: (202)-621-1910

ext. 286). Other problems, suggestions and comments may be

directed to Norm McCabe (Telephone: (202)-755-3465. NASA

Headquarters. Code NST-6, Washington, D. C. 20546.
Recon User's Bulletin! r_J_A

RECON Now

Searches Titles

Now you can search title fields, title supplement fields, title

extension fields, and notation of content fields in the following prime data base files: IAA,'STAR, CSTAR, CPA, OCSTARE, and

OSTARE. Text searching of titles is available for file

collections A, B, and D for 1972 accessions to date.

Code prefixes required for expand and select access to these

new fields are as follows:

Prefix Codes Inverted Pile Field

ATL

UTP

TSP

TEP

NOC

Search of all new title related fields.

Search only unclassified titles.

Search onlythe title supplement field.

Search only the title extension field.

Search only the notation of content field.

It is noted that access to title related fields is not supported

by the all text prefix (_X).

Plans are also being made to provide the same title searching

capability for the analogous alternate data base fields. They

are IAAA, STARA, CSTARA, OSTAR, and OCSTAR. The alternate

files will be title searchable as soon as the indexes are

completed. Additionaldocumentation will be distributed using

an update package to the RECON L_er's Manual, Complete Version.

Teleprinter Repairs

at Bunker-Ramo

Stations

Until March i, 1978, procedures for obtaining maintenance service

on the Texas Instruments Incorporated Silent 700 Printers remain

the same as they have been in recent years, i.e., call Data

Access Systems Incorporated. This service is provided for under

Informatics Information Systems Company Purchase Order Number 9322.

Procedures for obtaining such service after March Ist will be

announced both on "RECON News" and in the next Bulletin.

Using Lockheed, SDC Access to Lockheed and SDC search services using the NASA Facility

for NASA Headquarters and NASA Centers has been extended for the

remainder of 1978. Requests should be submitted to the Tacility

(Attn: Retrieval) by the library of the requesting organization.

Search by subject (or other criteria) may be made against the

data bases included in the appended Lockheed/SDC Data Base Listing.

The _cility will search the most appropriate data bases consistent with the subject scope of the search.

These lists will be updated as necessary in future issues of the

RECON User's Bulletin.
ORIGi_i:_:_ , _.J

OF POOR QoALITY

DATA BASE NACRE

February 1978

B= IBR's

Ot_LINE DATA BASES _JL = Lockheed_ S = SDC)_

SUBJECT AND SCOPE | VEIxDGR COVERAGE

(EfiTRY YEAR

TO PRESENT

UPDATE

FRE_'Y

Abstract Bulletin

of the Institute of

Paper Chemistry

Principles, technologies, raw

materials, products;

practices of manufacturing

and utilizing industries;

from the Institute of Paper

Chemistry

AGRICOLA

A I M/ARM

Air Pollution

Abstracts :

Cataloging and indexing

(CAIN) data base providing

worldwide coverage of

agriculture; from the

National Agricultural Library

Abstracts of Instructional

and Research Materials In

vocational and technical

education; now updated with

ERIC on L; from the Center

for Vocational Education

Air quallty and alr pollutlon

prevention and control; from

EPA

America: History

and Life

Covers current periodical

literature on American and

Canadlan history and American

and Canadian area studies,

including current affairs;

from ABC-CIIo, Inc.

Aquatic Sciences

and Fisheries

Abstracts

Artbibliographies

Modern

Oceanography, pollution,

freshwater biology and

Iimnology as well as legal,

polltlcal and social topics

related to sea and inland

water studies; from FCA and

UNESCO

Covers publications in the

field of modern art and

design in the period of 1800

to the present; from

ABe-Clio, Inc.

*Extracted and updated from the Bulletin of the American

Society for Information• Science, Vol. 3 No. 5

S Jan 1968 Monthly

L Jan 1970 Monthty

S Jan 1970 Monthly

L 1967-1976 Closed

L Jan 1966 Monthly

L Jan 196h Quarterly

L Jan 1975 Monthly

L Jan 197_ Quarterly

- I -
Biological Abstracts

CA Subject Index

Alert

Chemical Abstracts

CHEMICAL INDUSTRY

UOTES

CHEHNAME

CHILD ABUSE

AND NEGLECT

_'orldwide,.coverage of the

life sciences; from

BioSciences Information

Service

General subject index

headings and CAS Registry

Numbers for documents covered

by Chemical Abstracts; from

CAS

Bibliographical data and

keyword phrases for chemistry

and Chemical engineering;

from Chemical Abstracts

Service (CAS)

Extracted from businessoriented periodicals dealing

with recent events in the

chemical industry; from

Predicasts, Inc., and CAS

CAS Registry Numbers, CA

Index Names, molecular

formulas and synonyms for

chemical substances covered

by CASIA; from CAS and Lockheed

Material of interest in.fleld

L

S

L

S

L

L

Jan 1972

Jan 1972

Jan 1972-76

In progress

Jan 1970

Jan 1972

Dec 1973

Jan 1972

Jan 1972

1977

Jan 1972

Biweekly

Closed

To be

Announced '

Monthly

Biweekly

Weekly

Biweekly

Ronthly

Semiannual

CLAIMS/CHEM

CLAIMS/CLASS

CLAIMS/GEM

Commonwealth

AsrlcuItural

Bureaux Abstracts

U.S. chemical and chemicallyrelated patents plus some

foreign equivalents; from IFI/

Plenum Data Company

Classiflcation code and tltle

dictionary covering all

classes and se.iected subclasses of the U.S. patent

classification system; from

IFl/Plenum Data Company

U.S. general, electrical, and

mechanical patents; from

IFl/P1enum Data Company

Comprehensive coverage of

llterature related to the

agricultural sciences; from

Con_nonwealth Agricultural

Bu rea ux

L Jan 1950

Jan 1950

Jan 1971

Jan 1373

Monthly.

Semiannual

Honthly

Monthly

- 2-
Comprehensive

Dissertation Index

Congressional Record

Current Research

Information System

Defense Market

Measures System

Doctoral dissertations from

accredited universities

(predominateIy U.S.); from

Xerox University Kicrofiims

Covers the contracts awarded

by the Federal Government

related to defense and the

space industry; from. Capitol

Services

Covers current research in

agricultural and related

areas; from USDA Cooperative

State Research Service

Covers U.S. Dept. of Defense

contract award and includes

such data as receiving

contractor, awarding agency,

and dollar amount of

contract; from Frost and

Sullivan

L

S

S

L

EIS PLANTS Data and classification of t

!10,000 Industrial plants in

the continental U.S., from

Economic Information Systems,

Inc., and Predicasts, inc.

Energy Information Covers energy economics, U.S. S

Abstracts policy and planning, research L

and development, resources

and reserves, environmental

Impact, transmission and

storage of electric power and

fuel; from Environment

Information Center, Inc.

Engineering Index*

(COHPENDEX)

The COMPuterized ENgineering

INDEX data base covering

englneerlng literature; from

Engineering Index, Inc.

L

S

Environment Covers environmental literature L

Abstracts from interdisciplinary perspec- S

tlve-science, technology,

politics, sociology, commerce,

law; from Environment Information Center, Inc.

186i

1861

Jan 1976

Jul 1974

Jan 1975

Current

Jan 1971

Jan 1971

Jan 1970

Jan 1970

Jan 1971

Jan 1971

_onthiy

_tonthly

Weekly

Honthly

Quarterly

Quarterly

Bimonthly

Bimonthly

_onthly

Ronthly

Monthly

Monthly

*This file is also available for online searching using NASA/RECON.

-3-
Envi ronmenta 1

Periodicals

Bibl iography

ERIC

EXCEPTIONAL CHILD

EDUCATION ABSTRACTS

FF.,S INDEXES (FUNK

SCOTT)

FEDERAL INDEX

Food Science and

Technology Abstracts

FOUNDATION DIRECTORY

FOUNDATION GRANTS

INDEX

Covers approximately 260

journals pub]ishing articles

related to the environment

and Indexes al] tables of

contents; from ABS-CIio, Inc.

Complete data base on

research and journals in the

field of education, Including

Current Index to Journals in

Education and Resources In

Education; from the

Educational Resources

Information Center

Literature dealing with

education of handicapped and

gifted children; from the

Council for Exceptional

Chlldren

Concise Information and

references to articles

relevant to al] aspects of

business and economics; from

Predicasts, Inc.

Covers U.S. Government

activity from the

Congressional Record, Federal

Register, Commerce Business

Dally, Presidential Documents

and the Washington Post, with

citations to the Lode of

Federal Regulations, the

United States Code and

congressional bills; from

Predicasts, Inc.

International coverage of

food science and related

technologies, from IFIS

Descriptions of over 2,500

foundations with assets

exceeding $1 million; from

the Foundation Center

Cumulation of grants records

of more than 400 U.S.

philanthropic foundations;

from the Foundation Center

L

L

L °

L

S

L

L

Jan 1973

Jan ]966

Jan 1966

Jan 1966

Jan 1972

Oct 1976

Jan 1969

Jan 1969

Current

Jan 1973

Bimonthly

Honthly

Monthly

Quarterly

Monthly

Monthly

In progress

In Progress

Semlannuall¥

Bimonthly

-4-
GEO-REF

Government Reports

Announcements

(NTIS)

Grant Information

System

Historical Abstracts

l

INFORM

INSPEC-ELEC/COMP

INSPEC-PHYSICS

_NTERRATiONAL

STATISTICS

I SMEC

Geosciences; from American

Geological Institute

Covers a broad range of

disclpIines of over 240

government agencies; from the

National Technical

Information Service

Covers grants offered by

federal, state, and local

governments, co_erc ia 1

organizations, associations

and private foundations in

over 88 disciplines; by Oryx

Press

Covers the worldts cultural,

diplomatic, intellectua1,

polltical and social history

for the period 1775-1945.

Since 1971, scope has been

expended to cover the period

1450 to present; from ABSClio, Inc.

Abstracted. Business

Information covering

business, finance, and related

fields; from ABI

Worldwide coverage of

electrical engineering,

computer science, and control

engineering, with an online

thesaurus; from the

Institution of Electrical

Engineers (lEE)

Worldwide coverage of physics

Including an online thesaurus

from IEE

Time series and forecasts on

foreign economics, demographics,

finance, and production; from

Predicasts, Inc.

Information Service in

MEChanical Engineering plus

engineering management,

Including an online thesaurus;

from Data Courier, Inc.

L

S

S

L

L

L

L

S

Jan 1967

Jan 1964

Jan 1970

Current

Jan 1973

Aug 1971

Aug 1971

Jan 1969

Jan 1969

Jan 1972

Jan 1973

Monthly

Biweekly

Biweekly

Monthly

Quarterly

Monthly

Monthly

Monthly

Monthly

Varies

Monthly

-5-
Language and

Language Behavior

Abstracts

LIBCOrJIE,LIBCON/F

LISA

Management Contents

Meta]s Abstracts _

(METADEX)

Reteorolegical and

Geoastrophyslcal

Abstracts

National

Information Center

for Educatlonal

Media

Oceanic Abstracts

PAlS

_A section of this

NASA Centers that

Covers the world literature

on speech and language

pathology; from Sociological

Abstracts, Inc.

Cataloging of English

language and foreign language

books; from the Librar Y of

Congress-and various participating 1ibrarles

Covers the field of library

and information science; from

the Library Association

Covers journal literature of

business and management; from

G.D. SearIe

Worldwide metallurgical

literature, including Metals

Abstracts Index and Alloys

Index. An online thesaurus

Is provided; from the

American Society for Metals

•Meteorologlcal and

geoastrophyslcal literature

from both U.S. and foreign

sources; from the A_erican

Meteorological Society and

the National Oceanic and

Atmospheric Administration

Covers non-print educatlonal

media; from University of

Southern California (USC)

L

L

S

Worldwide coverage of

oceanography and marinerelated literature; from

Oceanic Abstracts and the

National Oceanic and

Atmospheric Administration

International coverage of

public affairs literature;

from PAlS

file is available for online searching

are Metals Abstracts subscribers.

Jan 1973

Jan 1965

Jan 1969

Jan 1969

Sep 1974

Jan 1966

Jan 1972

Jan 1964

Jan 1964

Jan 1976

through NASA/RECON for

Quarterly

"°

Weekly

Bimonthly

Bimonthly

Monthly

Monthly

Monthly

Monthly

Bimonthly

Monthly

-6-
Patent Concordance

Petroleum Abstracts

Petroleum/Energy

News

Pharmaceutical News

Index

Pollution Abstracts

Psychologlcal

Abstracts

¢

SAE Abstracts

Science Citation

Index

$mithsonian Science

Information Exchange

Social Science

Citation Index

Correlates patents issued by

different countries for the

same basic Invention; from CAS

Exploration and production of

gas and oil, geology, geophysics, and geochemistry;

from University of Tulsa;

restricted availability

Business news in petroleum

and energy; from American

Petroleum Institute

Indexing records for four

major drug industry

newsletters; from Data

Courier, Inc.

Covers all types of

literature on pollution, Its

sources, and its controls;

from Data Courier, Inc.

Coverage of the world

literature in psychology and

other behavioral sciences;

from the American

Psychological Association

Covers papers concerned with

•self-propelled vehicles and

applicable to the aerospace,

transportation, and

automotive industries;.from

Society of Automotive

Engineers, Inc. (SAE)

MultldisclpIinary Index to

the literature of science and

technology; from the

Institute for Scientific

Information

Summary research project

descriptions in all

disciplines; from SSIE, Inc.

Multidisciplinary index

covering the world's most

Important socia| science

Journals; from the Institute

for Scientific Information

S

L

S

S

S

L

Jan 1972

Jan 1965

Jan 1975

Dec 1975

FDC Rep.-Jan

1974, others

Jan 1976

3an 1970

Jan 1970

Jan 1967

Jan 1965

Jan 197_

Fiscal Year

1974

:. Jan 1972

Semiannual

Quarterly

Weekly

Monthly

Monthly

Bimonthly

Monthly

Monthly

Quarterly

Monthly

Monthly

Monthly

-7-
Sociological

Abstracts

World Aluminum

Abstracts

In-depth coverage of

sociology and related soclal

science areas; from

Sociologlcal Abstracts, Inc.

Covers technical 11terature

on aluminum, ranging from ore

processing (exclusive of

mining) through end uses;

from the American Society for

Metals (ASM)

L

Jan 1963

Jan 1968

Quarterly

Monthly

-8-
NahonalAeionautics and

SpaceAdrnin;stration•

_cientific and Technical

Information Office

Recon User's Bulletin

78/2

MARCH 1978

CONTENTS

NALNET Periodicals File

Printer Maintenance (Bunker-Ramo Terminals)

Literature Search Printout Explanation

NALNET Periodicals

File

Printer Maintenance

(Bunker-Ramo Terminals)

The NASA Library Network (NALNET) Periodicals File, or

Library Network Serials (LNS), is now available on RECON

for searching. Thls file, identified as File Collection

,Ill,,,will be accessible to those organizations authorized

to search the NALNET Books data base (File Collection "F").

You may search the periodicals file using the following

mnemonic codes:

Cod..._._e Fieicl

PTL Title

PTS Title Supplement

PHD Library Posting

PSS LNS ISSN Posting

PTC Title Change

PSN See Note

PSF See From Note

PCA Corporate Author

PPN Publisher Name

PSC SubJect Category

PTX All Text Inverted Fields

All of these fields are text searchable with the exception

of the two wh!ch are asterisked.

Additional information wiil be distributed as a revision

of the unabridged RECON User's Manual.

We have recently signed a contract with Texas Instruments, Inc., for maintenance of the TI Silent 700 Printers

for the Bunker-Ramo Terminals located at NASA Centers.

For service, NASA Centers should call Texas Instruments,

Arlington, VA, (703) 979-9650, and cite Informatics' Purchase

Order 11199. This maintenance contract is effective immediately

RECON operational problems may by directed to the RECON

Coordinator at the NASA Sc;entific and Technical Information

Facility in Baltimore. Maryland. (Telephone: (301)-796-5300

ext 286) or Washington. D C (Telephone: (202)-621-1910

ext. 286) Other problems, suggestions and comments may be

directed to Norm McCabe (Telephone: (202)-755-3465. NASA

Headquarters. Code NST-6. Washington, D. C 20546.
Recon t_serS Bulletin _l_jll_A

Printer Maintenance

(Continued)

Literature Search

Printout Explanation

and wi 11 run through February 28, 1979.

Should difficulties arise with this service, please contact

the RECON Coordinator at theNASA Facility, (301) 796-5300,

Extension 286, or (FTS) 982-5650.

A copy of the literature search printout explanatory matter

is attached. A supply of this material is periodically

sent out to the point of contact for each organization

having a NASA/RECON Terminal. The information is intended

to provide the search printout recipient with explanations

of the accession series, citation format and arrangement,

data elements, and availability of documents cited. A

separate description covers limited distribution citations.

A copy of this material should be retained for reference

at each terminal. Additionally, copies should be provided

to users as required. The printout explanatory matter may

be reproduced locally if desired. Extra copies may be

ordered from the NASA Facility by calling Rosalie Hichels

(301) 796-5300, Extension 372.
ATTACHHENT

CONTENT OF NASA LITERATURE SEARCHES

This NASA Ltterature Search is based on a computerized rec,ords search of the technical reports, iournal

articles, books, conference papers and other pubhcat_ons stored in the NASA scientific and technical mformat_on

system. Most of these documents have been announced e_ther m NASA's abstract iournal Sc_entihc and

Technical Aerospace Reports (STAR) or =n International Aerospace Abstracts (IAA). an abstract journal pubhshed

by the American Institute of Aeronautics and Astronauttcs (AIAA) under a NASA contract Abstracts are

included in the literature search for STAR and IAA. 1972 to date

DEFINITIONS OF SELECTED ACCESSION SERIES

A- 10.000 International Aerospace Abstracts (IAA) Open Literature items accessJoned by the American

InshtuteofAeronauhcsandAstronaut=csand announced =n tAA Cataloged. indexed, abstracted

B- 10.000 NASA Tech Briefs (NTB) Unclassified announcements of NASA-sponsored technical renovations

that may have use outside the aerospace field Cataloged, indexed, abstracted

D- 10.000 Aerospace Safety Research and Data Institute (ASRDIL ASRDI atems are divided into three

classes: D-10.O00 to D-29.999 for Fire Technology: D-30.O00 to D-49.999 for Cryogenic

Fluids. D-50.O00 to D-69.999 for Mechanics of Structural Failure. Cataloged. indexed.

abstracted

K- 10.000 Research and Development Contract Search (R&DCS) File The R&DCS File contains mformation

about NASA R & D contracts, grants and orders Information _n the file is avadable to NASA

personnel as a supplement to the ongoing research reformat=on contained m Research and

Technology Ob/ectives and Plans. These =terns are not documents Cataloged. Indexed

M- 10.000 Computer Program Abstracts (CPA) This series compnses manuscript abstracts of computer

programs which include descnpt=ons of the programs developed by NASA. _ts contractors. DOD.

its contractors, and other government agencms and their contractors Cataloged. indexed.

abstracted.

N- 10.000 Sctentihc and Techmcal Aerospace Reports (STAR/ Items announced in STAR Unclassified

documents of suffmient scientific/technical significance to warrant general announcement

Cataloged. indexed, abstracted

N-70.O00

N-80.O00

Documents of Limited Significance (DLSI Older unclassihed materials, or materials to= admmistratwe reasons considered unsuitable for announcement m a current abstract journal

Cataloged. indexed

W-70.O00 NASA Research and Technology Obiectives and 'Plans {RTOP) RTOP is an annual guide to

NASA-sponsored research in progress It =s a summary, w,th indexes, of all Research and

Technology Objectives and Plans submitted by NASA Centers to the NASA Headquarters Office

of Aeronautics and Space Technology for management rewew These =terns are not documents

Cataloged. indexed, abstracted. See N76-14961 for FY76:N75-20155 for FY75:N74-12673

for FY74. NOTE: For FY77. the document will be called the NASA Research and Technology

Objectives and Plans IRTOP) Summary. See N77-12925 for FY77.

FF35t JUN771REVI i
ARRANGEMENT AND FORMAT OF CITATIONS

The c0tations in this literature search are arranged in retrogressive accession number order wlthon each

accession number series by year. This means that the latest access=on =n each ser0es is listed first with the

oldest accession listed lasL

The technical reports (unpublished literature) are included _n the "N" accession number series whereas iournal

articles, books, and conference papers (published hterature) are nncluded in the "'A'" accession number ser0es

An example of a technocdl report reference cutatnon with each of its elements labeled is reproduced below

STARANHOUNCEMENT ISSUe

AYAIU),BL! ON MICROFICHE

NAiU4 EPONIOR SHiP

NAIA ACC|NilON

NUMII[R

CONTRACT I

OR GRANT _ |

TITLE I J

AUTHOR

CORPORATE

SOURCE

AGGTNACT

PAGE NO IN RTAR ANNOUNCEMENTINEUE

T REPORT NUMIIR

77N10032"1 ISSUE I PAGE _ CATEGORY _ NASA*CR-2700 LR-27581 r RIPORTOATE

NAS1-141_7 76/10/00"_202 PAGES UNCLASSIFIED DOCUMENT _ CLASSIFICATION

LH2 AIRPORT REQUIREMENTS STUDY FINAL REPORT, SEP. |975 " FED. 1576 NOTE

A/BREWER, G.D. RICO.

LOCKHEED-CALiFORNIA CO., BURBANK. AVAIL.NTIS

HC A10/MF A01

/*AIR TRAFFIC CONTROL/*AIRPORT PLANNING/*LIQUIO HYOROGEN/eTRANSPORT

AIRCRAFT/ COST ESTIMATES/ GROUND SUPPORT EQUIP_HT/ HYDROGEN FUELS/

LIQUEFACTION

ABA AUTHOR

ADS A PRELIMINARY ASSESSHENT or THE FACILITIES AN0 EQUIPMENT VHICH

WILL BE REQUIRE0 AT A REPRESENTATIVE AIRPORT iS PROVIDED SO LIQUID

NYOROGEN LH2 CAN BE USED AS FUEL IN LONG RANGE TRANSPORT AIRCRAFT IN

1995-2000. A COMPLETE FACILITY WAS CONCEPTUALLY DESIGNED, SIZED TO NEET

THE PROJECTED AIR TRAFFIC REQUIREMENT. THE FACILITY INCLUDES THE

LIQUEFACTION PLANT, LH2, STORAGE CAPABILITY, AND LH2 FUEL HANDLING

SYSTEM. THE REQUIREMENTS FOR GROUND SUPPORT AND MAINTENANCE FOR THE LH2

FUELED AIRCRAFT WERE ANALYZED. AN ESTIMATE WAS MAOE OF CAPITAL AND

OPERATING COSTS WHICH HIGHT BE EXPECTE0 FOR THE FACILITY.

RECOF, UqENOATIONS WERE MADE FOR DESIGN MODIFICATIONS TO THE REFERENCE

AIRCRAFT, REFLECTING RESULTS OF THE ANALYSIS OF AIRPORT FUEL HANDLING

REQUIREMENTS, AND FOR A PROGRAM OF ADDITIONAL TECHNOLOGY DEVELOPMENT

FOR AIR TERJqlNAL RELATED ITEHS.

AVAILAIIUTY IOU RCE

AND PRICE CODE

ING|X TERMS

FIGURE 1 TECHNICAL REPORT CITATION

An example of a published literature reference citation with each of its elements labeled is reproduced below:

PAGE NO, IN IAA ANNOUNCEMENT IIIRIE

INIH]I TERMS

AGSTIIACT

/

/

NAIA I_'ONIIORINIP _ _

CONTRACT OR GRANT

IAAACCIIIIONNUMIIR "me" 77A10119" ISSUE I PAGE 6_ CATEGORY k] NASg-lk]50 7&/lO/OO,qLI5 R|PORTDATE

¢ILABIMFtCA_ON NOTE PAGE S _. UNCLASS I F I E D 00GUMENT

TITLR m EVALUATION OF LANDSAT IRAGE REGISTRATION ACCURACY --* LARGE AREA _ _TLE|XTENNION

CROP INVENTORY EXPERIMENT

AUTHOR _ A/KANEKO, T. A/(IBM CORP., FEDERAL SYSTEHS OlV., HOUSTOn, TEx.) _ AUTNON

ILqllrUEMPENIODICAL P PHOTOGRA/'qMETRIC ENGINEERING AND REMOTE SENSING, VOL. k2, OCT. 1976, AFFIUA_ON

P. 1285-1299.

/*ALGORITHHS/*CROP IDENTIFICATION/*DATA ACQUISITION/*LANOSAT

$ATELLITES/*PATTERN RECOGHITION/*ROOT-REAN-SQUARE

ERRORS/*SATELLITE-BORNE PHOTOGRAPHY/ COMPUTER TECHNIQUES/ ERROR

ANALYSIS/ HISTOGRAMS/ REMOTE SENSORS/ STANDARD DEVIATION

AlIA (AUTHOR)

ARE THE LARGE AREA CROP INVENTORY EXPERIMENT (LACIE) IS AN ATTEMPT

TO DEMONSTRATE THE CAPABILITY TO FORECAST THE ANNUAL PRODUCTION OF

IqAJORCROPS SUCH AS MttEAT AND CORN. GOOD IMAGE REGISTRATION OF DATA

ACQUIRED ON DIFFERENT DATES IS ONE OF THE KEY ASSUMPTIONS RADE IN

LACIE. THIS PAPER DESCRIBES AN ALGORITH_ TO HEASURE THE ACCURACY OF THE

CURRENT REGISTRATION PROCEDURE. THIS ALGORITHM EMPLOYS A MODIFIED

VERSION OF SEQUENTIAL SIMILARITY DETECTION ALGORITHM (SSDA). BASED ON

OVER 26E REGISTRATION CHECKS, IT WAS FOUND THAT THE R00T-_EAH-$QUARE OF

REGISTRATION ERRORS WAS 1.0 PIXEL. THE FAILURE RATE OF OUR REGISTRATION

CHECKING ALGORITN_ WAS LESS THAN 10 PER CENT AND THE STANDARD DEVIATION

OF THE ACCURACY OF THIS ALGORITHM VAN LESS THAN 0.Z PICTURE ELEMENT.

FIGURE 2 PUBLISHED LITERATURE CITATION

FF3S1 JUN 77(REV) ii

ORIGI,r.]AL ,c',,.._,_'_ ,-,c IS

OF POOR QUALITY
DATA ELEMENTS IN THE CITATIONS

Accession number -- a untque number assigned for tdenttflcation to each document processed onto the NASA

system The letter at the beginning of the accession number represents the appropriate sertes, suchas;

"'A" -- announced =n Internafzonal Aerospace Abstracts

"'B'" -- published as a NASA Tech Brief, a one- or two-page announcement of an ran=vat=on, concept.

device or technique

"'N'" -- announced in SclentJ/ic and Technical Aerospace Reports or an unpublished report that was

not announced in tAA or m STAR because of its age or the prehminary nature of its contents

The two-digit number (77) tmmediately following the letter is composed of the last two dtgits of the year

(1977) in which the document was processed into the NASA system

The number following the letter (10032) in Figure 1; 10119 in Figure 2) is assigned in sequence as the

documents are processed The sequence is repeated each year, starting with the number 10001 Some blocks

of numbers have been designated to special subgroups identified as follows:

N62-60001 through N62-72596 -- technical reports that were abstracted and announced in a NASA Special

Publication titled Index to NASA Techmcal Pubhcations (NASA SP-9). which ts available from the National

Technical Information Service (NTIS. formerly CFSTI). Springfield. Virginia 22161

N-80001 through N-89999 for 1963 to 1967 and N-70001 through N-89999 for 1967 to date -- technical

reports that are relatively old at the time of processing or contain preliminary mformatton These references

have not been abstracted or announced =n STAR or IAA. but their c=tattons may be retr,eved by the computer.

A-80001 and above-published hterature citat_ons that have been abstracted and announced in a NASA Special

Publication titled Aerospace Medicine and Biology A Continuing Bibliography with Indexes (NASA SP-7011

and its supplements), avadable from NTIS The use of this accession number series for this special purpose

ended in July 1969

NASA Sponsorshrp -. when the astensk (*) ts printed after the accession number, the document cited was

written either by a NASA employee or was wrttten under NASA funding.

Available on Microhche -- when the pound sign (_/) is printed in the location shown in these examples, microfiche

copies have been made of the document cited A mtcrofiche is a transparent sheet of film. 105 x 148 mm m

size. containing up to 98 pages of information reduced to m=croimages (not to exceed 26:1 reduction)_

Announcement Issue -- the issue (Issue 1 in Figures 1 and 2) of STAR or IAA. during the year indicated m the

accession number (1977) in which the citation and abstract of the document were prtnted If the document

was not announced in STAR or IAA. this element and the two that follow will not appear in the pnntout

Page Number -- the number of the page in STAR or IAA on which the citation and abstract may be found.

Category Number -- the subiect category sect=on of STAR or IAA in which citation and abstract may be found

Report Number -- all numbers asstgned to a specific document by the originating agency, the corporate source.

or the accession number assigned by another government agency

Contract or Grant -- the numbers of all contracts, grants or orders cited in a document as the financtal support

for the research reported

FF351 JUN 771REV= iii
Report Date -- Indicates the date the document was pubhshed Documents not bearing dates of publ,cation

have these dates supplied by the cataloger from the best available evidence Entry is Year/Month/Day

. o .

Title -- the descriptive des=gnat=on of a document as =t appears on the title page or cover of a report, or at the

beginning of a journal article

Notation of Content -- abnef description of the contents of a document In some cases, a Notation of Content

is not included. It was replaced by the Title Extension =n 1 974

Title Extension -- =s used optionally =n STAR and IAA to enhance the title and =s separated from the title by

three dashes.

Author(s) -- the name of the person or persons who created the document When there _s more than one

author, the names of the authors are hsted in the search c_tat_on =n the same order =n which they are hsted =n

the document Preceding each author's name iS a code letter m alphabetical sequence (A/. B/. C/) In a

published literature citation, the cocle letter preceding the author's name corresponds wtth the second letter of a

two-letter code (AA/. AB/. AC/) preceding the author's name afhhation (see Author Afhhatlon. below) Thus.

an author preceded by A/ was afflhated with the organization preceded by AA/; an author preceded by B/ was

affiliated with the organization preceded by AB/. etc If a published hterature citation has only one author

affiliation, it applies to all authors listed regardless of the code letters appearing with it. In a techn0cal report

citation, the two-letter code precedes information related to the author.

Author Affiliation -- =n a published literature citation, the organization in which the author was working at the

time the document was prepared

Corporate Source -- in a technical report citation, the name of the organization _ssuing the document cited, and

which is experimentally (or techmcally), eddorially, or contractually responsible for the document. It =s the name

of the body which actually prepared the document, cited in the form that was current at the time of the

document's release, as indicated in the document.

Availability Source -- a source from which the document is available to the public.

Title of Periodical -- the name of the journal, book. or other work in which the cited article was originally

printed. This is followed by the volume number, _ssue number and page numbers, if applicable, to identify the

citation in relation to the published work in which it was printed

Index Terms -- all of the subject terms used to index the document, whether or not the individual terms apply

directly to this search. Terms preceded by an asterisk are those used =n the STAR or IAA Subject Indexes,

these are listed first The remaining terms are stored in the computer for machine searching purposes.

Abstract -- abstracts are available for STAR and IAA accessmns from 1972 to date The mnemonics ABA and

ABS denote abstract author and abstract, respectively.

FF351 JUN 771REVI iv
DATA FLAGGING AND TAGGING PROJECT

The NASA Scientific and Technical Information Office. wfth support from the National Science Foundation. is

conducting a Data Taggmg and Flaggmg Experiment a_med at tmprovmg users" access to the numer,c data

,-eported in the aerospace literature.

All accessions in the following subject categories for 1977 STAR/IAA Issues 05 - 10 have been analyzed for

numeric data content_ 02 Aerodynamics: 24 Composite Materials: 26 Metalhc Materials: 27 Nonmetallic

Materials; 71 Acoustics; and 74 Optics

Sample of a Data Flagged and Tagged Accession

77X14843"1 ISSUE 5 PAGE 675 CATEGORY 7k k_SA-CR-150117

ITEKB-29_49-FRI-VOL-2A

UNCLASSIFIED DOCUMENT

SPACE TELESCOPE OPTICAL TELESCOPE ASSEMBLY/SCIENTIFIC INSTRUMENTS.

PHASE i PRELININARY DESIGN AND PROGRAM DEFINITION STUDY. VOLUME 2A

FOCAL PLANE CAMERA FINAL REPORT

ITEK CORP., LEXINGTON, NASS. AVAIL.NTiS NC AO6/HF NO1

/*SPACEDORNE TELESCOPES/*TRADEOFFS/ ELECTROMAGNETIC FIELDS/

FOCUSING/ LENSES/ MIRRORS/ OPTICAL

[QUIPNENT/**COOLING/**CYCLES/e*oIN'_ETERS/**NODULATI _-

ON/**REFRACTION/**TENPEAATURE MEASURENENT/**TIME/**WAVELENGTNS

AlIA AUTHOR

ABS TRADE STUDIES UERE CONDUCTED TO ENSURE THE OVERALL FEASIBILITY

OF THE FOCAL PLANE CAJ,IERA IN A RADIAL MODULE. THE PRIMARY VARIABLE IN

THE TRADE STUDIES WAS THE LOCATION OF THE PICKOFF MIRROR, ON AXIS

VERUS 0FF-AXIS. _ ALTERNATIVES WERE (I) THE STANDARD

(ELECTROI'MGNETIC FOCUS) SECO SUDHODULE, AND (2) THE NOD 15 PER/qANENT

HAGNET FOCUS SECO SUB MODULE. THE TECHNICAL AREAS OF CONCERN t_[RE THE

PACKAGING AFFECTED PARAMETERS OF THERI4AL DISSIPATION, FOCAL PLANE

OBSCURATION, AND I_L4GE QUALITY.

OATAEUMMANY _ SUN ENCIRCLED ENERGY AND POINT SPREAD FUNCTIONS OF THE FOCAL PLANE

CAMERA AT 325 NM; VARIABLES ARE RELATIVE INTENSITY, IMAGE 0tA/qETER,

MOOULATION TRANSFER, CYCLES, TI_E, INDEX OF REFRACTION, WAVELENGTHS,

COOLING CAPACITY, TEMPERATURE DIFFERENTIAL; 2] FIGURES INCLUDE NUNERIC

DATA.

DATA TERMS

dcmlMe ostmmlksl

FF351 JUN771REV) V
AVAILABILITY OF DOCUMENTS

Many of the technical reports cited, and many of the journals or books from which the published literature

citations were selected, may be available in your organization's library or other local I,braries.

"'N'" ACCESSION NUMBER SERIES

One or more sources from which a document announced in STAR is available to the public is ordinarily given on

the last line of the citation. The most commonly indicated sources and their acronyms or abbrewations are

listed below. If the publication is available from a source other than those listed, the publisher and his address

will be displayed on the availability line or in combination with the corporate source line.

Avail: NTIS. For NTIS prices of hardcopy and microfiche, consult your latest issue of STAR. NTIS price

schedules have been included in STAR. commencing with STAR I. January 8. 1977.

Microfiche is available regardless of age for those accessions followed by a _ symbol.

Initially distributed microfiche under the NTIS SRIM (Selected Research in Microfiche) is available at

greatly reduced unit prices For this service and for information concerning subscription to NASA

reports, consult the NTIS Subscnptlon Unit.

Avail:

Avail:

NOTE ON ORDERING DOCUMENTS: When ordering NASA publications (those followed by the '=

symbol), use the N access=on number. NASA patent aPplicat,ons (only the specifications are offered)

should be ordered by the US-Patent-AppI-SN number. Non-NASA publications (no asterisk) should

be ordered by the AD. PB, or other report number shown on the last line of the citation, not by the N

accession number. It is also adwsable to cite the title and other bibliographic identification.

SOD (or GPO). Sold by the Superintendent of Documents. U.S. Government Printing Office, in hard

copy. The current price and order number are given following the availability line. (NTIS will fill

microfiche requests, at the standard $3.00 price, for those documents identified by a _ symbol).

NASA Public Document Rooms. Documents so indicated may be examined at or purchased from the

National Aeronautics and Space Administration. Public Documents Room (Room 126). 600

Independence Ave., S.W.. Washington, D.C. 20546. or public document rooms located at each of the

NASA research centers, the NASA Space Technology Laboratories, and the NASA Pasadena Office at

the Jet Propulsion Laboratory.

Avail: ERDA Depository Libraries. Organizations in U.S. cities and abroad that maintain collections of

Energy Research and Development Administration reports, usually in microfiche form. are listed in

Nuclear Science Abstracts. Services available from the ERDA and its depositories are described in a

booklet. Science Information Available from the Energy Research and Development Administration

(TID-4550), which may be obtained without charge from the ERDA Technical Information Center.

Avail: Univ. Microfilms. Documents so indicated are dissertations selected from Dissertation Abstracts and

are sold by University Microfilms as xerographic copy (HC) and microfilm. All requests should cite the

author and the Order Number as they appear in the citation.

Avail: USGS. Originals of many reports from the U.S. Geological Survey. which may contain color

illustrations, or otherwise may not have the quality of illustrations preserved in the microfiche or

facsimile'reproduction, may be examined by the public at the libraries of the USGS field offices whose

addresses are listed in this Introduction. The libraries may be queried concerning the availability of

specific documents and the possible utilization of local copying services, such as color reproduction.

FF351 JUN 77(REV) vi
Avail: HMSO.PublicationsofHerMaiesty'sStationeryOffice are sold in the U.S. by Pendragon House. Inc.

(PHI). Redwood City. California. The U.S price (including a service and mailing charge) is given, or a

conversion table may be obtained from PHI.

Avail: BLL (formerly NLL). British Library Lending Division. Boston Spa. Wetherby. Yorkshire. England.

Photocopies available from this organ,zation at the pr,ce shown. (If none is given. ,nquiry should be

addressed to the BLL)

Avail: ZLDI. Sold by the Zentralstelle fLir Luftfahrtdokumentation und -Information. Munich. Federal Republic

of Germany. at the price shown in deutschmarks (DM).

Avail: Issuing Activity. or Corporate Author. or no indication of availability. Inquiries as to the availability of

these documents should be addressed to the organization shown in the citation as the corporate

author of the document.

Avail: U.S. Patent Office. Sold by Commissioner of Patents. U.S. Patent Office. at the standard price of 50

cents each. postage free.

"'A'" ACCESSION NUMBER SERIES

Published literature ("A" series) documents cited are available from the Technical Information Service. American

Institute of Aeronautics and Astronautics. Inc. Paper copies are available at $5 per document up to a max,mum

of 20 pages. The charge for each additional page is 25 cents. Microfiche are available at the rate of $2 per

microfiche for documents identified by the _/ symbol following the access=on number. A number of publications.

because of their special characteristics, are available only for reference in the AIAA Technical Information

Service Library. Please refer to the accession number. (e.g.. A77-10119) when requesting documents.

FF351 JUN 771REV) vii
ADDRESSESOFORGANIZATIONS

AmericanInstituteofAeronautics

andAstronautics

Technical InformationService

750 Third Ave

New York. N.Y. 10017

British Library Lending Divislon,

Boston Spa. Wetherby. Yorkshire,

England

Commissioner of Patents

U.S Patent Ofhce

Washington. D.C 20231

Energy Research and Development

Administration

Technical Information Center

P,O. Box 62

Oak Ridge. Tennessee 37830

ESA-Space Documentation Service

ESRIN

V,a Galileo Galilei

00044 Frascati (Rome) Italy

Her Majesty's Stationery Office

P O. Box 569. S.E. 1

London. England

NASA Scientific and Technical Information

Facility

P,O. Box 8757

B, W. I. Airport. Maryland 21240

National Aeronautics and Space

Administration

Scientific and Technical Information

Office (KSI)

Washington. D.C 20546

National Technical Information Service

5285 Port Royal Road

Springfield, Vlrginia 22161

Pendragon House, Inc

899 Broadway Avenue

Redwood City, California 94063

Superintendent of Documents

US Government Printmg Office

Washington. D C. 20402

University Microfilms

A Xerox Company

300 North Zeeb Road

Ann Arbor. Michigan 48106

University Microfilms. Ltd

Tylers Green

London. England

U.S. Geological Survey

1033 General Services Administration

Building

Washington. D.C. 20242

U.S. Geological Survey

601 E. Cedar Avenue

Flagstaff. Arizona 86002

U.S. Geological Survey

345 Middlefield Road

Menlo Park. California 94025

U.S. Geological Survey

Bldg, 25. Denver Federal Center

Denver. Colorado 80225

Zentralstelle f_r Luftfahrtdokumentation und -Information

8 M_inchen 86

Postfach 880

Federal Republic of Germanv

FF351 JUN 77(REV) viii
FORMAT AND CONTENT OF LIMITED DISTRIBUTION REFERENCES

This part of the NASA Literature Search is based on a computerized records search of the technical reports and

other documents in the NASA scientific and technical information system which either bear a security

classification or are not publicly ava*lable.

Many limited distribution documents received prior to 1973 were announced in NASA's classified announcement

journal Classified Scientific and Technical Aerospace Reports (CSTAR). Publication of CSTAR was discontinued

at the end of 1972. It was replaced by an unclassified, limited distribut*on publication entitled Lirnlted Scientific

and Technical Aerospace Reports (L STAR).

If a cited document has a security classification, the citation contains a classification note to this effect, as

shown below. If such a document has a title which us security classified, the title has been deleted from the

citation contained in this search; all citations included are unclassified.

If a document appearing *n Part II is unclassified, the citation contains a distribution limitation note. as shown

below. This note specifies the extent to which the NASA Facility *s authorized to distribute the document and

to fill requests for copies. A classified document may have a distribution limitat*on note in addition to the

security classification note.

An example of a limited distribution reference citation with each of its elements labeled is reproduced below:

urlrA R ANNOUNCEMENT ISSUE

AVAII,.AmuE ON MICROFICHE

IPONIONSHIP

NAIL& ACCIESGION

NUMSER IL

REPORT DATE im

TIT1UE

AInlcoRs

CORPORATE

IOUR¢i

AlmlrltACT

1 PAGE NO. IN LE;TAII ANNOUNCEMENT ISSUE

SUBJECT CATEGORY IN I.BlrAR

_1 " l REPORT NUMSER

r (:LJkANiF ICATt ON

NOTE

76XLOOS9*1 ISSUE I PAGE II CATEGORY 8 NASA-TH-X62485 A-6271

75/IO/OO 50 PAGES UNCLASSIFIED OOCUMENT'LGOVT. ._, CONTR. ,i DISTRIBUTION

e. A SIRULATOR ANALYSIS OF THE F-I/cA AIRPLANE AUTOPtATIC CARRIER LAN01NG UMITATIONNOTE

SYSTEN

JL A/MCNEILL, V.E.; B/REPEL, J. M.; C/AGNEU, W. H.; D/FORTENILAUGH,

R.L. D/(NAVAL AIR TEST CENTER:; C/{NAVAL AIR TEST CENTER); 4 AUTHOR

O/(NAVAL AIR DEVELOP. CENTER. UAR.'qlNISTER. PA.) _IIIUATION

D NATIONAL AERONAUTICS AND SPACE ADMINISTRATION. ANES RESEARCH CENTER,

HOFFETT FIELD, CALIF.

/*AIRCI_kFT GARRIERS/*AUTORATiC LANOING CONTROL/*F-14 AIRCRAFT/ _'_ INORXTEIIINIS

CORPUTERIZEO SIPgJLATION/ DIRECT LIFT CONTROLS

ABA AUTHOR

m ADS A MOVING-BASE CARRIER LANDING SIMULATION WAS CONDUCTED TO

EVALUATE THE F-IkA AIRPLANE AUTOMATIC CARRIER LANDING SYSTEIq (AtLS)

WITH AND WITHOUT INTEGRATED DIRECT LIFT CONTROL. STATISTICAL RESULTS

SHOW THAT INCORPORATION OF DIRECT LIFT CONTROL IN THE AIRDORNE PORTION

OF TI_ ACLS CAN PROVIDE SIGNIFICANTLY IHPROVED LANDING PRECISION IN

FULLY AUTOMATIC APPROACHES OVER THAT AVAILABLE UITH THE CONVENTIONAL

ACLS THAT EMPLOYS ONLY PITCH CONTROL. PILOT EVALUATION INDICATED THAT

VITN INTEGRATED DIRECT LIFT CONTROL. GLIDE PATH TRACKING AND RIDE

QUALITIES VERE SATISFACTORY EVEN UNDER CONDITIONS OF H_kVY-SEA DECK HOTION

AND TURBULENCE.

FF351 MAY 77(REV)

ORIGII_JAL ,, ,_ ,._

OF POOR QUALITY
DATA ELEMENTS IN LIMITED DISTRIBUTION REFERENCE CITATIONS

The data elements in the Limited Distribution Reference citations are defined in the same way as those in the

introductory material for the unclassified, unlimited citations, but with the following spec0al distinctive

attributes:

Accession Number -- the letter "'X" at the beginning of the accession number represent_ the series of documents

having some limitation on distribution from the NASA Facility. One block of numbers has been ded,cated to a

special subgroup:

X-lO001 through 49999 for the accession years 1962-72 were announced in CSTAR For accession

year 1973 and later they have been announced in LSTAR. using the same ranges

X-70001 through X-89999-documents with distribution limitations that are relatively old at the time

of processing or contain preliminary information These references have not been abstracted nor

announced in CSTAR or LSTAR and are not available on microfiche, but their citations may be

retrieved by the computer. These are comparable to the similarly numbered subgroup in the "'N'"

series.

• Classification Note -- a note designating the security classification of the document cited. They are_

UNCLASSIFIED DOCUMENT. CONFIDENTIAL DOCUMENT. SECRET DOCUMENT. CONFIDENTIAL

RESTRICTED DATA DOCUMENT. or SECRET RESTRICTED DATA DOCUMENT. This note has no bearing on

the security classification of the citation, as all of the citations are unclassified.

Distribution Limitation No_e -- this note identifies a user organization eligible to receive documents which bear

limitations on their d*stribution from the NASA Facility. They are:

- NASA ONLY -- Employees of NASA Headquarters and NASA Centers only

NASA & CONTR ONLY -- NASA employees and NASA research and development contractors only

GOVT AGCY ONLY -- U.S. Government Agencies only

GOVT & CONTR ONLY -- U.S Government Agencies and U.S Government Agency contractors only

(including NASA and NASA research and development contractors)

DOMESTIC ONLY -- U.S organizations and citizens only.

FF351 MAY 77(REV) ii
AVAILABIUTY OF DOCUMENTS

NASA documents (identified by an asterisk after the accession number) in the Limited Distribution References

part of this literature search are available without charge to registered requesters. Documents are available in

hard copy. and those identified with the # symbol after the accession number are also available as microfiche.

Non-NASA documents, except Department of Defense and Energy Research and Development Administration

documents, are provided by NASA only to NASA Offices. Centers. contractors, subcontractors, grantees, and

consultants• Distribution by NASA and the NASA Facility is subject to the limitations specified in the document

citation. If the document is security classified, requesters must certify the existence of a requ*rement for access

to security classified information in performing official work and of adeq,,ate storage facilit*es. *n initial registration with NASA

Department of Defense documents accessioned by the Defense Documentation Center (DDC) (identified by

"AD'" number in the report number position in the citation) are available to registered DDC users as follows:

CHANNELS AND FORMS FOR DOC USERS TO ORDER COPIES OF TECHNICAL REPOHTS - I JULY 1948

F_ HARD COPIES, As Fellws: NOCHARGE

Send DDC Feel

DDC Caeelet_e Nvnd_wRe,_e T* DDC

AD-I - 199 999 ................... X

_0 000- _P9959 .................. X

AD-]00 (W0 SERIES

_0- 341 514 ............... X

)41 SIS - 395 999 ............................. X

396 _0 - 396 999 .................. X

397 000. 3_ _ ........................... X

&D.4_ 000SERIES

400000.464929 ............. X

• 444 930.49 999 .................................... X

dr0 000- 492 _ ............... X

493000-499999 ................................... X

AD.400 _ SERIES .................................. X

AD4100 _0 SERIES ....................................... X

DDC NUMBER UNKNOWN .............................. X

PRE-AD (TIP • ATI) ................. X

SERVICE CHARGE

SNd CFSTI ONbr

Te CFSTI

Fa All IdlCROFORM C_iot

SendDOC Fern t T* DD¢

prier -lq_vel lit LWlTED

rEPORTS =w=t be eb_i_ld

t_= RELEASE AUTHORITY

end eecleNd with erde_.

AD 1 ..... 199.999

AD 200,000 ..... 299,99g

AD 300,000 ..... 399.999

AD 400,000 ..... 439,899

AD 600,000 ..... 699,999

AD 800.000 ..... 799.999

AD 800.000

AD AO00 001

AD BOO() 001

AD CO00 001

AD D000 001

AD Dt00 000

..... 989,999

..... A999.999

..... B999.999

..... C999.999

..... 0099,999

..... D499,999

No pattern.

Unclassified only.

Classified only.

Unclassified only; may or may

not have • release limitation.

Classified only.

Unclassified/Unlimited

(available from NTIS|.

Unclassified/LJmited.

U nclassified / U nlimited.

Unclassified/Limited.

Classified.

Unclassified (Pltents),

Reserved for Information

Analysis Center Records.

FF351 MAY 77(REV) iii
N/ SA

Nahonal Aeronauhcs and

3pace Adm_ntstrahon

Scientific and Technical

Information Office

RECON User's Bulletin

78/3

MAY 1978

CONTENTS

Registration Product Control System (RPCS) Access

Search Strategies

UTS 400 Function Key Support

Screen Management

RPCS Access The Registration and Product Control System (RPCS) contains

a file on registered users of the NASA Scientific and

Technical Information System. The users are characterized

by 'Mho, what, and where," descriptors and by the services

and products each user is authorized to receive. The

services and products (including copy total) are but an

extension of the user characteristics. The (RPCS) file is

now available on RECON for searching by users at NASA Center

and is identified as file collection _L'.

The RPCS file is searched by utilizing five inverted files

associated with it. One of the inverted files is a text

index file which encompasses six lines of corporate address,

thereby providing text search capability for the corporate

source address. The four other inverted files provide

searching on product, class, descriptor, and contract number.

The prefix codes for the five inverted files are:

TXT/

CS1/

CS2/

CS)/

AT1/

CS4/

CS5/

Text Index File (encompasses six lines of

corporate address including the attention

line).

Corporate Source Address - Line 1

Corporate Source Address - Line 2

Corporate Source Address - Line 3

First Attention Line

Corporate Source Address - Line 4

Corporate Source Address - Line 5

PRD/

CLS/

Product Index File

Class Index File

RECON operational problems may by directed to the RECON

Coordinator at the NASA Scmntfflc and Technical Information

Facility in Baltimore. Maryland. (Telephone (301)-796-53OO

ext 286) or Washington. D C (Telephone (202)-621-1910

ex! 286) Other problems, suggestions and comments may be

directed to Norm McCabe (Telephone (202)-755-3465. NASA

Headquarters. Code NST- 42. Washlnglon. 0 C 20546
RECON User's Bulletin r_A

RPCS Access

(Cont lnued) DES/

CNT/

Descriptor Term Index File

Contract Index File

The list of field mnemonics that may be used to reformat

the output with the SPECIFY-FORNAT command are:

No__=. Cod_.__eeField

I SPN

2 UID

3 NAT

4 CGA

5 REG

6 STC

7 AF1

8 AF2

9 AF3

10 OR1

11 OR2

12 OR3

13 SVl

14 SV2

15 SV3

16 SEC

17 PAY

18 HF1

19 HF2

20 HF3

21 HF7

22 HF4

23 MF6

24 HF5

25 HF8

26 CDT

27 CRN

28 DDT

29 DRN

30 EDT

31 CS1

32 CS2

33 C53

34 AT1

35 AT2

36 CS4

37 CS5

38 DES

SPONSOR

USER IDENTIFICATION

NAT I ONAL GEOGRAPHI C DATA

C0NT IGUOUS AREA

REGI 0NAL AREA

STATE AND CITY

AFFILIATION TYPE 1

AFF I L IAT I ON TYPE 2

AFFILIATION TYPE 3

ORGANIZATION TYPE 1

ORGANIZATION TYPE 2

ORGANIZATION TYPE 3

SERVICE TYPE 1

SERVICE TYPE 2

SERVICE TYPE 3

SECURITY ACCESS

PAY CLASSIFICATION

HICROFI CHE G1

HI CROFICHE H1

HICROFICHE G3

MICROFICHE G4

HICROFICHE G1SR

MICROFICHE H1SR

HICROFICHE G3SR

H I CROFI CHE G4SR

CHANGE DATE

CHANGE REASON

DELETION DATE

DELET ION REAsoN

ENTRY DATE

CORPORATE'SOURCE LINE 1

CORPORATESOURCE LINE 2

CORPORATE SOURCE LINE 3

ATTENTION LINE 1

AI"rENTION LINE 2

CORPORATE SOURCE LINE 4

CORPORATE SOURCE LINE 5

DESCRIPTORS
RECONUser'sBulletin _SA

RPCS Access

(Continued)

No.._._. Cod_._EeField

39 PRD PRODUCT DATA

40 SNA SCAN A & B

41 CLS CLASS AND DIVISION DATA

42 CNT CONTRACT DATA

43 SNB SCAN B DATA

Additional information will be available in the revision

of the NASA/RECON System User's Hanual.

Search Strategies Auqmentation or Contraction of a Given RECON Set

(By use of the KEEP command)

There are occasions when the search analyst would like

to modify a RECON set by adding or deleting one or more

accessions before printing the set,

Let us assume Set 11 as follows:

ENTER:

S INTERPHONES

RECEIVED: S INTERPHONES

11 11 11 ST/INTERPHONES

ENTER:

D 11/1/ALL

RECEIVED: D I1/1/ALL

DISPLAY 11/I/I-11

77X76466 77X758/_ 77X73480 77X73479 77X72930 75X71530 76N74704 69N80320

69N80319 68N25814 68N15652

We wish to add two accessions to Set 11 as follows:

ENTER:

K 78N12345

RECEIVED: K 78N12345

KEEP 78N12345
0

Recon Users Bulletin

Search Strategies

(Cont inued)

ENTER:

K 78N12346

RECEIVED: K78N12346

KEEP 78N12346

ENTER:

C 11+99

RECEIVED: C 11+99

12 13 13 11+99

Enter 2 "KEEPS" and then combine 11+99 for Set 12 consisting

of 13 accessions.

Be extremely cautious in removing accessions from a given

set, particularly if two or more series are involved in

the basic set and the KEEP command has been used previously

since the last END-SEARCH process.

Let us assume we wish to remove items 2 and 3 from Set 11.

We proceed:

ENTER:

K 11/2-3

RECEIVED: K !1/2-3

KEEP 11/2-3

Set 99 now consists of these 2 items and the two original

KEEPS (above). To ensure the removal of the two items, we

must limit 99 to the X series.

ENTER:

L 99//X

RECEIVED: L 99//X

13 2 2 LIMIT 99//X

ENTER:

C 11-13

RECEIVED:

14

C 11-13

9 9 11-13

Set 13 now consists of X items. Subtracting Set 13 from

Set 11 results in Set 14 with 9 items.

Caution: Do not combine sorted sets, because they will

not be in the proper sequence.

Further details on the use of the KEEP command are in

Section 5.3.11 of the NASA/RECON Systems User's Manual,

Complete Version, Revision 2.
Recon User,s Bulletin NnSA

UTS 400 Function Key

Support

The STI Facility has developed software that is loaded

into the UTS 400 terminal to manage the keyboard and

display, specifically for NASA/RECON operation. Utilization of this capability is subject to the following

restrict ions:

• 8K memory in the UTS 400 in addition to the

standard configuration

Software loading is requested by a telephone call

to the RECON Coordinator (soon to be initiated by

terminal user input command)

• Power off/on or test sequences require software to

be reloaded

The purposes of this software are to provide function key

input for the nine most frequently used RECON commands_

more facile keyboard management than the standard UTS 400

or Bunker-Ramo keyboards, complete management of the UTS

400 display, and the disabling of certain UTS 400 keys that

can produce difficulties in RECON usage.

THE UTS 400 STANDARD KEYBOARD

The UTS 400 Terminal keyboard is divided into four sections.

The top two rows of keys consist of terminal control and

screen management functions. The lower left section contains cursor control keys and the UPPER FUNCTION key.

Since many of the keys in the top two rows are dual function

keys (F5 - F14), the UPPER FUNCTION key selects the function

labeled on the upper part of the key. The lower middle

section of the keyboard is in typewriter format and used

for standard keyboard input. Finally, the lower right keyboard section constitutes a numeric pad for numeric character

input.

tITS 400 MODIFIED KEYBOARD FOR RECON USAGE

As stated previously, the STI Facility software for the UTS

400 terminals modifies the standard keyboard functions.

Immediately following loading of the software from STIF,

the terminal display is cleared and the message ENTER:

followed by the cursor appears at the left margin of the

bottom line of the screen. The right portion of the bottom
RECONUser'sBulletin __

UTS 400 Function Key

Support (Continued)

line contains the message:

RECON HODE ACTIVE.

This is the normal default condition following software

loading. The function of the keyboard is now modified.

The terminal user may deactivate this mode of operation

by simultaneously depressing the UPPER FUNCTION key and

the F14 key to enter the local mode. The RECON HODE

ACTIVE message is replaced with the message:

LOCAL HODE ACTIVE.

Local mode operation permits the user to modify the Control

Page, activate peripherais_ or perform any of the keyboard

functions restricted by the RECON mode. The user may

reenter the RECON mode by simultaneously depressing the

UPPER FUNCTION and F15 keys..

While in the RECON mode, the UTS 400 software provides

RECON command input using keys F5 through F13 for the nine

most frequently used RECON commands. The function key

designations and their corresponding command applications

are listed in Table 1. The result of depressing any of

these function keys is the display of the command name

from the right column of Table 1 next to the ENTER: on

the bottom line of the screen. The command name is

followed by a space and the cursor to enable the operator

to input command arguments. The operator may change the

command name and erase the line using any of the other

function keys F5 - F1B as many times as desired prior to

initiating transmission.

Other normal keyboard modifications are listed in Table 2.

These modifications may besummarized as follows:

• Lowercase input is converted to uppercase, thus

eliminating the need to use the shift lock key,

• The key for inputting a ? or / has been modified

to provide a slash regardless of the keyboard case,

• The LF, FF, and SOE keys have been disabled, and

• The space bar will erase and advance the cursor.

Since only nine RECON commands may be entered through

function keysp the remaining commands must be entered
RECON User's Bulletin

UTS 400 Function Key

Support (Continued)

directly by typing any of the command mnemonics in Table 3.

Also, all commands must be separated from their operands

by at least one space. Whenever any of the mnemonics in

Table 3 are entered and followed by a space, the software

will expand the mnemonic to the full command text. If a

three-character mnemonic is entered that is not in Table 3

and followed by a space, the message

I NVAL I D COMHAND

will appear in the right portion of the bottom line.

action wlli not inhibit further user input, but it is

intended as a warning.

This

For example, if the user wishes to enter a LIHIT command,

an L is Input from the keyboard followed by a space. This

action causes the L to be expanded to LIHIT followed by a

space and the cursor. The user may now enter the LIHIT

operands.

UTS 400 Screen

Nanagement

Because certain UTS 400 screen management control keys are

not used in the RECON mode, they have been disabled or

modified in order to minimize user problems. Table 4

lists all control keys on the UTS 400 keyboard and indicates

if its standard operating function has been modified.

Several key operations in Table 4 are worthy of special

mention. They are:

ERASE DIS - This key will cause the entire screen

to be erased, reformatted, and the ENTER: message

to be displayed in the left margin of the bottom

line, followed by the cursor.

• DELETE LINE - I)ata deletion is restricted to fields

which are nonprotected, that is, available for

keyboard input.

• BACKSPACE - Erases any character spaced over and

moves the cursor.

7
RECON User's Bulletin _A

UTS 400 Screen

Management

(Cont inued)

• SPACE - Erases any character spaced over and moves

the cursor.

Any key which has been disabled for the RECON mode will

cause the message

NO OPERATION

to be displayed on the bottom line.
RECON User's Bulletin

UTS 400 Screen TABLE 1. FUNCTION KEY INPUTS/OUTPUTS

Nanage_nt

(Continued)

KEY

DES I GNATOR

FI -F4

F5

F6

F7

F8

F9

FIO

F11

F12

F13

F14

F15

FI6-F22

I N PUTS

(KEYBOARD)

KEY

FUNCT ION/TYPE

NOT APPLICABLE

BEG IN -SEARCH

OUTPUTS

(KEYBOARD)

COMMAND

ENTRY

TEXT

NOT APPL I CABLE

BEG IN-SEARCH

EXPAND

SELECT

COMBINE

DISPLAY

PRINT

EXPLAIN

END-SEARCH

PAGE

LOCAL

RECON

NOT USED

EXPAND

SELECT

COMB I NE

DISPLAY

PR I NT

EXPLAIN

END-SEARCH

PAGE

LOCAL MODE ACTIVE Msg

RECON MODE ACTIVE Msg

No-Operat ion Msq

TABLE 2. NORMAL KEY INPUTS/OUTPUTS

KEY

DESIGNATOR

?

@

TAB FWD

LF

FF

SOE

CR

INPUTS

(KEYBOARD)

ASC I I

CHAR

m

I

?

@

A-Z

a-z

m

m

KEY

FUN CT ION/T YPE

Special Characters

Numerics

Question Mark

At Symbol

Uppercase Alphabet i cs

Lowercase Alphabet ics

Tab Forward

OUTPUTS

(DISPLAY)

DATA

ENTRY

TEXT

No Change

No Change

Slash (/)

No Change

No Change

Uppercase

No Change

Line Feed

Form Feed

Start-of-Entry

Carriaqe Return

Alphabetics

No-Operatlon Msg

No-Operation Msg

No-Operation Msg

No Chanqe
RECON User's Bulletin

dTS &O0 Screen

Management

(Continued)

TABLE 5. COMHAND HNENON IC INPUTS/OUTPUTS

INPUTS(KEYBOARD)

COHHAND HNE_MONI CS

B BS BGN

X XP XPN

S SEL SL

C CO COM

D DIS DSP

PR PRN PRT

T TY TP

EN ES END

R RLS REL

SS SCH SST

DSH H I H IS

L LIH LMT

LA LAL

SF SPE SP

FO FMT FOR

IT ITM

P PG PAG

K KP KE

XPL EX EXP

H HE HEL

ST STA

CA CL CAN

F FR FRE

SO SOR

,.RS RNG RAN

COHHAN D NAMES

Begin Search

Expand

Se i ec t

Comb i ne

Display

Print

Type

End Search

Release

Search Status

Display Set History

Limit

Limit-Al 1

Specify Format

Format

I tern

Page

Keep

Exp la in

Help

Status

Cancel

Frequency

Sort

Ranqe Search

10

OUTPUTS TO

COMHAND ENTRY

LINE

BEG IN-SEARCH

EXPAND

SELECT

COMBINE

DISPLAY

PR I NT

TYPE

END-SEARCH

RELEASE

SEARCH -STATUS

H I STORY

LIMIT

L I M IT-A LL

SPEC I FY-FORMAT

FORMAT

ITEM

PAGE

KEEP

EXPLAIN

HELP

STATUS

CANCEL

FREQUENCY

SORT

RANGE-SEARCH
RECONUser'sBulletin _._A

UTS 400 Screen

Management

(Continued)

KEY

DESIGNATOR

ERASE TO

EOD

ERASE TO

EOL

ERASE TO

EOF

ERASE DIS

DELETE IN

LINE

DELETE IN

DIS

DELETE LINE

INSERT IN

LINE

NSERT IN

DIS

INSERT LINE

BACK SPACE

SPACE

TAB SET

CURSOR TO

HOME

TAB BACK

INPUTS

(KEYBOARD)

tUTPUTS

KEY

FUN CT I ON/TYPE

Erase To End Of

Di sp lay

Erase To End Of

Line

Erase To End Of

Field

Erase Display

(All)

Delete Characters In

Line

Delete Character In

Display

Delete Line

Insert Character In

Line

Insert Character In

Display

Insert Line

Backspace

Forward Space

Set Tab Stop

Cursor to Home

Tab Backward

OUTPUTS

OR

OPERAT IONS

No Change

No Change

No Change

Display is cleared and

'ENTER:' is displayed

No Change

No Change

Restricted to Data Entry

Fields

No Change

No Change

Restricted to Data Entry

Field

Hove cursor backward and

erase character

Erase character and move

cursor forward

Display No-Operation Msg

No Change

No Change

11
RECON User's Bulletin

uTS 400 Screen

Hanagement

(Continued)

TABLE 4, CONTROL KEY INPUTS/OUTPUTS (CON"

INPUTS

(KEYB,O.ARD)

KEY

DESIGNATOR

LINE DUP

CLR CHG

REP ADR

CONTROL PAGE

XHIT

PRINT

XFER

STATU S

HANG UP

LOAD PROGRAH

KEY

FUN CT I ON/TYPE

Line Duplicate

Clear Changed Bits

Report Address

D i sp ! ay/Resto re

Control Page

Transmit

Print

Transfer

Report Status

Hang Up

Load Program

FCC

FCC

FCC

FCC

SEARCH

BOB

RELEASE

BUFFER

RECOVER

BUFFER

CLEAR

LOCATE

REENABLE

GENERATE

FCC Clear

FCC Locate

FCC Reenable

FCC Generate

Search

Back One Block

Release Buffer

Recover Buffer

OUTPUTS

OR

OPERAT IONS

Display No-Operation Msg

Display No-Operatlon Hsg

Display No-Operation Plsg

Display No-Operation Hsg

No Change

No Change

Display No-Operation Hsg

or perform indicated

operat ion

Display

Display

Display

Display

Display

Display

Display

Display

Display

No-Operation Hsg

No-Operation Hsg

No-Operation Hsg

No-Operation Hsg

No-Operation Hsg

No-Operation Hsg

No-Operation Msg

No-Operation Hsg

No-Operation Nsg

Display No-Operation Hsg

Display No-Operation Hsq

12
NASA

• National Aeronauhcs and

3pace Administration

Scientific and Technical

Information Office

RECON User's Bulletin

78/4

AUGUST 1978

CONTENTS

RECON Stored Search Sequence Capability

Deletion of Commercial Data Bases

FREQUENCY Command

New York Times Information Bank Searches for NASA

Organizations

Addition of New Users

Use of the Full BEGIN-SEARCH Con_and

RECON Stored Search

Sequence Capability

A new capability is being added to the NASA/RECON System

that enables the creation, storage, and subsequent editing

and execution of user-defined command sequences. This

facility will enable the RECON user to create and save

search strategies that may be repetitive in nature. For

such searches, reexecution can be initiated with a single

command. Additionally, minor modifications to the search

may be performed, stored as another search, and executed.

This stored search sequence capability is also to be used

as the basis for a user-oriented Selective Dissemination of

Information (SDI) System.

The creation and execution of stored searches are performed

through the new RECON QUERY command. The QUERY command

consists of a large number of subcon_r_nds and parameters to

permit stored search operations. The complete documentation

package describing the QUERY command Is too voluminous to

include in this bulletin. However, a complete description

of the stored search capability and the QUERY command

features will soon be available through a revised NASA/RECON

User's Manual. This feature will not be avai|abie for all

terminals.

RECON operational problems may by directed to the RECON

Coordinator at the NASA Scientific and Technical Information

Facility in Baltimore. Maryland. (Telephone: (301)-796-5300

ext 286) or Washington. D C (Telephone: (202)-621-1910

ext. 286) Other problems, suggestions and comments may be

directed to Norm McCabe (Telephone: (202)-755-3465. NASA

Headquarters. Code NST-42. Washington, D C 20546
RECONUser'sBulletin

Deletion of Commercial

Data Bases

FREQUENCYCommand

NewYork Times

Information Bank

Searches for NASA

Organizations

The Engineering Index (COHPENDEX) and Hetals Index

(HETADEX) file collections have been deleted from

access through NASA/RECON. These file collections,

J and K, were deleted because the cost of storing and

maintaining the files was not justified by the relatively low usage.

The FREQUENCY command Is a low-usage RECON command

which provides a feature that can be used to extend

or augment the results of a search or even to limit

it by improving search precision. The FREQUENCY

command itself provides a display of the subject

terms indexed to the citations comprising a RECON

set. The display is ordered by term in descending

frequency occurrence of the referenced set. This

means that a RECON user, having determined that his

search Is complete, may initiate a FREQUENCY command

on the final set obtained in order to determine If

there are any subject terms that were indexed to the

citations in the set, that may not have been considered

in the initial search strategy. Hence, the user may

extend the search using terms from the FREQUENCY

display that may be determined to be relevant to the

initial search requirements. Unwanted classes of

documents can be eliminated by using the "not" logic

but always with great care to avoid eliminating useful

information. A complete description of the FREQUENCY

command and its options ts included In Section 5 of

the revised NASA/RECON User's Hanual.

The STI Facility is now prepared to process search

requests from NASA personnel for the New York Times

Information Bank. Requests should be addressed to

NASA Headquarters, Attn: Code NST-42.

The Information Bank comprises virtually all the news and

editorial matter from the final Late City Edition, including

Sunday feature sections and daily and Sunday regional

material not distributed within New York City. The

Information Bank also contains selected articles from

several general circulation newspapers, business publications, science publications, news weeklies, and so forth.

The requester is urged to ensure that the subject of a

search request is relevant for the Information Bank.

2
RECONUser'sBulletin J_

Addition of New

Users

Use of the Full

BEGIN-SEARCH Command

A number of new NASA/RECON users have been added from

the Department of Energy and Environmental Protection

Agency on an exchange basis. The Department of Energy

users are: The Argonne National Laboratory, The

Department of Energy Library, The Lawrence Berkeley

Laboratory, Lawrence Livermore Laboratory, Sandia

Laboratories, The DOE Technical Information Center,

and Pacific Northwest Laboratory. The new EPA user

is the Boulder Laboratories.

Recent modifications to the NASA/RECON System require

that a11 users (hardwire and dial-in) must enter a full

BEGIN-SEARCH command as their first command of the first

session everyday. If you enter any other command, you

should receive a message indicating that a BEGIN-SEARCH

command must be entered. It is emphasized that it must

be a full BEGIN-SEARCH command and not a BEGIN-SEARCH

Bypass. This requirement is necessary in order to

allocate intermediate storage assignments for each

USERID for that session.

In addition, the questionnaire displayed as a result of

a full BEGIN-SEARCH command (for leased-line users)

contains two additional fields that are not presently

used. The first field is labeled SET SAVE which will,

in the future, enable a RECON user to switch file

collections using the BEGIN-SEARCH command and still

retain the sets created in the previous search. The

second field is labeled USERID which will enable a

single leased-line user to have multiple searches in

progress simultaneously from the same terminal. When

implemented, this will permit one user to perform a

search with his or her own personal USERID, leave the

terminal, prior to completion of the search, and allow

another user to do a complete search at the termlnal

without disturbing the saved contents of the first

search. Until further notice, these two fields should

be ignored by all users.