HDTenEightyP/NetNews huggingface dataset:
From: nwickham@nyx.cs.du.edu (Neal Wickham)
Subject: Re: Privitization of Sewer/Water Infrastructure
X-Disclaimer: Nyx is a public access Unix system run by the University
	of Denver for the Denver community.  The University has neither
	control over nor responsibility for the opinions of users.
Keywords: Privitization Infrastructure
Reply-To: nwickham@nyx.UUCP (Neal Wickham)
Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
Date: Tue, 26 Jan 93 08:22:09 GMT

In article <ghorne.15@fox.nstn.ns.ca> ghorne@fox.nstn.ns.ca (Garth Horne) writes:
>I am seeking leads on where to find information or articles on Privitization 
>of Sewer and Water Infrastucture. Does anyone know of an institution, 
>individual who would have information on this. Is there a location where 
>this has actually occured.

I can give you a couple of shakey leads.  Milton Friedman (sp?) is the big
privitization economist.  You might use his name in a search and then look
at his publications for references.  And he talks a lot about the 
advantages of privitization in general.

And you can access huge library systems through the internet.  One is the
entire University of California library system.  The "Catalogue" programs
for many of these library systems are very good too.  A friend and I once 
found some publication on the use of sonic testing for lumber written by 
my friend's father in the U of Cal system.  You then get the call number
and most publications can be delivered to your local library through the
Inter-Library Loan System.

Here are some libraries you can access via Telnet though this list is
a couple of years old: 

TOMUS (Boston Univ. Library) - 128.197.4.200 - library.bu.edu

MELVYL (Univ. of Cal.) - melvyl.ucop.edu - 31.1.0.1 - 31.0.0.13 - 31.1.0.11

CARL (Colorado) (login as carl) - nike.cair.du.edu - 130.253.1.14

RLIN ($$) rlg.stanford.edu - 36.54.0.18

MIRLYN (U. of Michigan) 35.1.1.6 (which host: MIRLYN)

LIAS 128.118.25.13 - lias.psu.edu (use TERM to set termtype)

And sometimes you can access these or other libraries through the menu
of your local library electronic catalogue.   

Hope this helps.


                                      NCW

Newsgroups: sci.engr.civil,sci.engr.control
From: sarafrk@vuse.vanderbilt.edu (Rajeev K. Saraf)
Subject: books/research topics in real-time traffic control area
Originator: sarafrk@cee1
Organization: Vanderbilt University School of Engineering, Nashville, TN, USA
Date: Thu, 28 Jan 1993 19:01:26 GMT

Hi netters,
	Thanks to everyone who replied to my earlier posting on
traffic control.
	I am currently in a phd program and working in the area of
traffic control. I am still trying to look for a problem for my 
proposal and final dissertation.
	I plan to work in general area of traffic control using some
of the control theory techniques and/or AI techniques. I was wondering
if someone could suggest me with the name of the books written in recent
past that talk about state of the art in this field. At least it would
give me an idea about the problems that have been solved and the future
research direction.
	Any ideas on the research topics are most welcome too.
Thanking you all,

Rajeev Saraf
sarafrk@vuse.vanderbilt.edu
From: naina@eng.umd.edu ('Mohammed Rafay)
Newsgroups: sci.engr.civil
Subject: Transportation software information
Date: 26 Jan 1993 22:28:22 GMT
Organization: Project GLUE, University of Maryland, College Park
Distribution: world
NNTP-Posting-Host: tea.eng.umd.edu

I am lookin for an inventory of simulation programs and models
related to transportation/traffic engineering and planning.

If anyone has an idea where I may get such information from would be
greatly appreciated.   

Rafay.
naina@eng.umd.edu
rafay@eng.umd.edu
From: uhausmann@sgcl1.unisg.ch
Newsgroups: sci.engr.civil
Subject: exi
Date: 22 Jan 93 17:40:33 GMT
Organization: University of St.Gallen, Switzerland

OP
Newsgroups: sci.engr.civil
From: sychen@envmsa.eas.asu.edu (Chen, Shen Yeh)
Subject: SORRY,the problem should be:SOLVING NON-POSITIVE STIFF. by CHOLESKY??
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: Arizona State University, Tempe, AZ
Date: Fri, 22 Jan 1993 09:29:00 GMT


 This is from Shen-yeh Chen, for further discription of the problem.

 I am sorry, I have made a stupid mistake. What I want to ask is

   CHOLESKY METHOD FOR NON-POSITIVE DEFINITE MATRIX

 Non-positive does not mean negative. I am sorry about this.

 Let me state this again :

 1) Is there any method I can use to REDUCE [K], and still solve the system
    when [K] is NOT POSITIVE-DEFINITE?
 2) If such method exists, what's the criteria for positive- or nonpositive
    definite?
 3) Does any body know how to use Gauss method to reduce [K] ??

Newsgroups: sci.engr.civil
From: e2liuzhe@brolga.cc.uq.oz.au (Zhen Liu)
Subject: Re: Strcutural Engr.(?? Solve a negative-definite stiffness matrix ??)
Organization: Prentice Centre, University of Queensland
Date: Thu, 21 Jan 1993 22:30:39 GMT

sychen@envmsa.eas.asu.edu (Chen, Shen Yeh) writes:
you may use modified Root of Square method which need not square function
but would overflow when there is zero on diagonal

>  I always use Cholesky Decompsition to reduce the size of stiffness [k].
> However, now  I have some situation that [K] is negative-definite but I
> still have to solve the equation. I have not try Gauss method yet, however.

>   Does anyone kow :
>   1) Is there any method I can use to reduce [K], and still solve the system
>      when [K] is negative-definite ?
>   2) If such method exists, what's the criteria for positive- or negative-
>      definite?
>   3) If no such method exits,( We can not take advantage of symetry to
>      reduce the size of [k], I mean.), does Gauss method work? What's
>      the criteria for question (2)?

> NOTE :  [ ] ====> matrix      { } ====> column vector

>   It will be greatly appreciated if anyone can give me some idea. If you
> do not want to type all that stuff to me, just tell me the theorem used.
> Of course, it will be better if you can tell me reference books. Any
> assistance will be greatly appreciated.

>   Thank you very very very much !!!!!!

Newsgroups: sci.engr.civil
From: sychen@envmsa.eas.asu.edu (Chen, Shen Yeh)
Subject: Structural Engr. (???Books for structural design/system of bridges ???)
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: Arizona State University, Tempe, AZ
Date: Sat, 23 Jan 1993 03:43:00 GMT

  Hi, 

    I want to read some books about the design and system of bridge  structures.
  Can any body give me some idea, please ??

	Thanks a lot.
From: jayakris@translab.its.uci.edu (R. Jayakrishnan)
Subject: Re: Transportation software information
Newsgroups: sci.engr.civil
Organization: University of California, Irvine
Date: 27 Jan 93 01:18:57 GMT

In article <1k4du6INN1g5@mojo.eng.umd.edu> naina@eng.umd.edu ('Mohammed Rafay) writes:
>I am lookin for an inventory of simulation programs and models
>related to transportation/traffic engineering and planning.
>
>If anyone has an idea where I may get such information from would be
>greatly appreciated.   
>
>Rafay.
>

  The McTrans bulletin that comes out of the Transportation/Software
  center at the University of Florida is the first thing to look at.
  I am sure you can find it at UM. Try Professor Chang in the civil
  engineering department, if you cant get hold of it. He will surely
  have a copy.

  Jay

Newsgroups: sci.engr.civil
From: raingle@uncc.edu (Richard A Ingle)
Subject: Re: Wood Structure course.....
Keywords: Why do you want a wood structures course?  Isn't structural analysis sufficient?
Reply-To: raingle@uncc.edu
Organization: University of NC at Charlotte
Date: Tue, 26 Jan 1993 22:38:24 GMT
From: v104n55k@ubvmsd.cc.buffalo.edu (David I Schwartz)
Newsgroups: sci.engr.civil
Subject: Re: Wood Structure course.....
Date: 26 Jan 93 00:07:00 GMT
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41

In article <C1CGDK.Mzt@news.cso.uiuc.edu>, dludi@uxh.cso.uiuc.edu (Darmawan Ludirdja) writes...
>I need to know which school offers Wood Structure course?
> 
>Thanks in advance,
>Darmawan
>dludi@uxh.cso.uiuc.edu

Try the forestry school at Syracuse U. The U. of Maine at Orono has a 
wood tech. school (more materials oriented).

David I. Schwartz
V104N55K@ubvms.cc.buffalo.edu
Newsgroups: sci.engr.civil
From: fix@casbah.acns.nwu.edu (Keith Fix)
Subject: Re: Wood Structure course.....
Organization: Northwestern University, Evanston Illinois.
Date: Tue, 26 Jan 1993 01:19:09 GMT

I believe a course was offered here at Northwestern University for advanced
undergraduate students.  It may have been a one time offer though.  Try
contacting the Civil Enginering Department and ask if it was offered Fall
Quarter.  Sorry, there's no general purpose e-mail address (yet).
-- 
	White Knight-----Chivalry is dead, but sex is alive and well.

		Keith Erick Fix	      fix@casbah.acns.nwu.edu
Newsgroups: sci.engr.civil
From: sychen@envmsa.eas.asu.edu (Chen, Shen Yeh)
Subject: Re: Strcutural Engr.(?? Solve a negative-definite stiffness matrix ??)
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: Arizona State University, Tempe, AZ
Date: Sat, 23 Jan 1993 00:29:00 GMT

In article <1993Jan22.232957.10004@wuecl.wustl.edu>, rr2@cec1.wustl.edu (Rajamiyer Ravichandran) writes...
>In article <20JAN199313220783@envmsa.eas.asu.edu> sychen@envmsa.eas.asu.edu (Chen, Shen Yeh) writes:
>>
>>  I always use Cholesky Decompsition to reduce the size of stiffness [k].
>> However, now  I have some situation that [K] is negative-definite but I
>> still have to solve the equation. I have not try Gauss method yet, however.
>>
>>   Does anyone kow :
>>   1) Is there any method I can use to reduce [K], and still solve the system
>>      when [K] is negative-definite ?
>>   2) If such method exists, what's the criteria for positive- or negative-
>>      definite?
>>   3) If no such method exits,( We can not take advantage of symetry to
>>      reduce the size of [k], I mean.), does Gauss method work? What's
>>      the criteria for question (2)?
>>
>> NOTE :  [ ] ====> matrix      { } ====> column vector
>>
>>   It will be greatly appreciated if anyone can give me some idea. If you
>> do not want to type all that stuff to me, just tell me the theorem used.
>> Of course, it will be better if you can tell me reference books. Any
>> assistance will be greatly appreciated.
>>
>>   Thank you very very very much !!!!!!
>>
> 
>I assume you are solving a structural analysis problem. Negative definite
>stiffness matrix is encountered in unstable equilibrium configurations
>during a structur's nonlinear response.
> 
>If you are studying the unloading path then the Gauss method should
>work if you replace your load vector with a negative sign. I have tried
>this and worked for me.
> 
>The criteria for positive- or negative-definite stiffness matrix is 
>still being debated. Usually if you compute the eigen values of
>the stiffness marix and if all the eigen values are positive then
>your matrix is positive-definite. Also you can compute the determinant
>of the K matrix and see if it is positive or negative.
> 
>Hope this helps
> 
>Rajamiyer V. Ravichandran
>Post-doctoral Fellow
>Dept. of Civil Eng.
>Washington University, St. Louis.
Newsgroups: sci.engr.civil,sci.optics,sci.physics
From: shiva@well.sf.ca.us (Kenneth Porter)
Subject: Laser rangefinder principles
Organization: Whole Earth 'Lectronic Link
Date: Thu, 28 Jan 1993 04:29:46 GMT

I'd like to know how laser rangefinders (as commonly used in land
surveying) work. Can someone point me to a reference explaining the
principles?

My initial guess was that the instrument measured the roundtrip time for
the light to travel to the remote corner-cube mirror and back, but it
struck me that to get any kind of accuracy (like in the inch range), one
would have to be able to measure the time to 100 picoseconds, which would
require some pretty exotic electronics.

So what is the trick, then? I suspect that whatever the method, it must
be difficult since such instruments typically sell for $20k (although
you can rent one for about $80/day). 

Please CC your reply to my mailbox in case I miss the posting.
Organization: Penn State University
Date: Tue, 26 Jan 1993 14:51:55 EST
From: <JPS9@psuvm.psu.edu>
Newsgroups: sci.engr.civil
Subject: Re: Wood Structure course.....

Penn State offers several wood enf`gineering courses.  I am currently working o
n my masters in Agricultural Engineering in the area of wood sturctures, primar
ily timber bridges.
Jim
Newsgroups: sci.engr.civil
From: dludi@uxh.cso.uiuc.edu (Darmawan Ludirdja)
Subject: Wood Structure course.....
Organization: University of Illinois at Urbana
Date: Sun, 24 Jan 1993 05:53:44 GMT

I need to know which school offers Wood Structure course?

Thanks in advance,
Darmawan
dludi@uxh.cso.uiuc.edu
From: greg@brooks.async.vt.edu (Greg Foliente)
Newsgroups: sci.engr.civil
Subject: Re: Wood Structure course.....
Date: 27 Jan 93 16:00:53 GMT
Reply-To: greg@brooks.async.vt.edu OR pol2@vtvm1.cc.vt.edu

In article <C1CGDK.Mzt@news.cso.uiuc.edu> dludi@uxh.cso.uiuc.edu (Darmawan  
Ludirdja) writes:
> I need to know which school offers Wood Structure course?
> 
> Thanks in advance,
> Darmawan
> dludi@uxh.cso.uiuc.edu

If you meant Wood Anatomy and Structure, there are wood  
technologists/scientists in the faculty of UIUC Dept of Forestry (I know  
one personally). Syracuse (SUNY) is traditionally good at this, too.

If you meant Wood Structures (as in wood structural engineering), here are  
some of the best schools in North America:
	University of British Columbia (Canada)- CE Dept 
	University of New Brunswick (Canada)- Forest Eng Dept
	Washington State University (Pullman, WA)- CE Dept
	Oregon State University - Forest Products Dept  
	Virginia Tech - Joint CE and Forest Prods Depts  
E-mail me if you want more info.

In case you wonder, I am in Wood Structures (BSCE, MS Wood Mechanics,  
MSCE, and currently working for PhD on "Stochastic Dynamic Response of  
Wood Structures")

--
.................................................................
Greg Foliente                   NeXTmail: greg@brooks.async.vt.edu 
Virginia Tech, Blacksburg, VA                 pol2@vtvm1.cc.vt.edu
.................................................................
Newsgroups: sci.engr.civil
From: rr2@cec1.wustl.edu (Rajamiyer Ravichandran)
Subject: Re: Strcutural Engr.(?? Solve a negative-definite stiffness matrix ??)
Organization: Washington University, St. Louis MO
Date: Fri, 22 Jan 1993 23:29:57 GMT

In article <20JAN199313220783@envmsa.eas.asu.edu> sychen@envmsa.eas.asu.edu (Chen, Shen Yeh) writes:
>
>  I always use Cholesky Decompsition to reduce the size of stiffness [k].
> However, now  I have some situation that [K] is negative-definite but I
> still have to solve the equation. I have not try Gauss method yet, however.
>
>   Does anyone kow :
>   1) Is there any method I can use to reduce [K], and still solve the system
>      when [K] is negative-definite ?
>   2) If such method exists, what's the criteria for positive- or negative-
>      definite?
>   3) If no such method exits,( We can not take advantage of symetry to
>      reduce the size of [k], I mean.), does Gauss method work? What's
>      the criteria for question (2)?
>
> NOTE :  [ ] ====> matrix      { } ====> column vector
>
>   It will be greatly appreciated if anyone can give me some idea. If you
> do not want to type all that stuff to me, just tell me the theorem used.
> Of course, it will be better if you can tell me reference books. Any
> assistance will be greatly appreciated.
>
>   Thank you very very very much !!!!!!
>

I assume you are solving a structural analysis problem. Negative definite
stiffness matrix is encountered in unstable equilibrium configurations
during a structur's nonlinear response.

If you are studying the unloading path then the Gauss method should
work if you replace your load vector with a negative sign. I have tried
this and worked for me.

The criteria for positive- or negative-definite stiffness matrix is 
still being debated. Usually if you compute the eigen values of
the stiffness marix and if all the eigen values are positive then
your matrix is positive-definite. Also you can compute the determinant
of the K matrix and see if it is positive or negative.

Hope this helps

Rajamiyer V. Ravichandran
Post-doctoral Fellow
Dept. of Civil Eng.
Washington University, St. Louis.
From: swm1@ns1.cc.lehigh.edu (SEAN WRIGHT MARKEY)
Newsgroups: sci.engr.civil
Subject: Needed info on the eco-efficentcy of steel vs. concrete.
Date: 26 Jan 93 22:18:19 GMT
Organization: Lehigh University


    Hi,
        I am doing a study with a collegue of mine to see the camparison of
        the eco-efficientcy of steel vs. concrete.  I was wondering if anyone
        has any of the following information of ideas of where to begin to
        find it.
            We need:

                    - An approximation of the tonnage of steel per cubic yard
                    of building space.

                    - An approximation of the relation of cubic yards of
                    concrete per unit of building volume for concrete
                    structures.

                    - A relationship of re-steel per cubic yards of concrete.

                    - Information on pollution caused by either concrete of
                    steel structures.

                    - Amount of pollution caused by the manufacturing of one
                    ton of steel and one cubic yard of concrete.

                    - Enviromental problems caused by the demolition of
                    concrete structures and the disposal of concrete debris.

   Any information given or ideas are greatly appreciated.  You can either
   mail them to the address at the bottom or e-mail me at swm1@Lehigh.EDU
   I do check my mail several times a day, so it definately will be read.
   Thank you in advance.


   
-- 
    Sean W. Markey                +  Lehigh University Golf Team Captian
    611 East Fifth St.            +          \
    Bethlehem, PA 18015           +           \
    ID: swm1                      +             oooo    0
    ------------------------------------------------------------------------
From: anadeem@ampere.sci.bio (Ahmed Nadeem)
Newsgroups: sci.engr
Subject: MRI And CT-SCAN Images Of Dogs?
Date: 27 Jan 93 08:34:58 GMT
Article-I.D.: ampere.ANADEEM.93Jan27013458
Distribution: sci.engr
Organization: /home/ampere1/anadeem/.organization

Netters,
      I am currently working on a research project that involves construction 
of realistic, solid or geometric models for dogs.
      Does anyone know where I can get serial section images( MRI, CT-SCAN, 
etc ) for dogs?
                                                       Thanks,
                                                              Ahmed Nadeem
From: jm67@hydra.gatech.edu (MURRAY,JEFFREY P)
Newsgroups: sci.engr
Subject: XSPICE Simulation Tool Discussion
Date: 28 Jan 93 13:56:20 GMT
Organization: Georgia Institute of Technology



   I have gotten a lot of email reqesting more information about 
XSPICE; particularly, most folks seem to want to get more info on
the tools prior to reqesting a copy. This is a reasonable request,
unfortunately, we do not currently have the resources to do much
toward that end, at least not in real time. I may try to get more
information in the form of a spec sheet or attempt to move portions
of the User's Manual onto the xspice@gtri.gatech.edu host machine
to allow for anonymous FTP of that information. In the mean time,
I am trying to answer as many of the questions I receive as possible...
please bear with me.

   For those of you who just can't wait (and I hope there are at least
a few of you ;-), let me suggest that you get hold of your nearest
technical library, and obtain a copy of the Proceedings of the 1992
International Symposium on Circuits and Systems. One of the papers
presented (authors are F.Cox, W.Kuhn, S.Tynor and myself) introduces
XSPICE and details an example of syntax, lists the models included,
and works through an example using XSPICE to simulate the analog and
digital portions (all in one netlist) of a MIDI-controlled music
synthesizer. The paper should provide enough information to cover the
most basic questions that have come up, but I will continue to see
about getting all or portions of the User's Guide up and running.

Again, bear with me. XSPICE is not a commercial product, just as
"plain vanilla" SPICE is not...we don't have the resources of a
MicroSim (=PSPICE) to promote the tools or help new users, although we
would certainly like to. The "cost" of XSPICE is really just for
documentation, cutting tapes, etc. and doesn't provide any real margin
for support...we want folks to use these tools because we know ourselves
how powerful they are. We are convinced that XSPICE provides most of the
capabilities of a PSPICE and in many ways goes beyond it; it's up to the
user community to decide if we're right.

   Regards,

   Jeff Murray
--
MURRAY,JEFFREY P
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!jm67
Internet: jm67@prism.gatech.edu
Newsgroups: sci.engr
From: S_REUSS@rzmain.rz.uni-ulm.de (Reuss Steffen)
Subject: Internship in Washington
Organization: University of Ulm, Germany
Date: Mon, 25 Jan 1993 10:34:04 GMT
X-News-Reader: VMS NEWS 1.25beta

Hello !

I am a student of electrical engineering (3rd year) in Germany. I would
like to get some experience on my field by doing practical studies in a
firm in Washington (or Oregon) for about 3 months in 19941994.
My problem is, that I don't have addresses of firms where I could apply for
internship.
I am especially looking for firms on the following fields:
     - Medical systems
     - Transportation systems
     - Energy (e.g. Solar)

If anyone can help me, I'd be very glad about that !

    Thank you, Steffen


******************************************************
*    Steffen Reuss                                   * 
*    reuss@rz_nwfs2.rz.uni-ulm.de                    *
*    Germany                                         *
******************************************************
From: choy@skorpio.usask.ca (I am a terminator.)
Newsgroups: sci.engr
Subject: Computing for Engineering
Date: 22 Jan 1993 21:50:58 GMT
Organization: University of Saskatchewan, Saskatoon, Canada
Distribution: na
NNTP-Posting-Host: skorpio.usask.ca

In article <C11AMs.295@world.std.com>, fw@world.std.com (forrest d whitcher) writes:
|> >it would appear that all advances are made by specialists
|>  
|>   Pardon my paraphrase, I _do_ understand what you are saying, but I have
|> rather observed that many, though certainly not a majority of advances
|> come when a specialists move between fields. Thus, molecular biology
|> became what is is when a number of physicists applied their knowlege to an
|> area which had been neglected from that point of view. Certainly in my
|> experience, engineers often miss a solution to a difficult problem because
|> the answer lies in an area in which they have not been trained.
|> 
|>   I do not think that the above observation indicates a devaluing of 
|> specialization, but perhaps that failure to look beyond the narrow answers
|> is and essential cause of dogmatic thinking.

I think this stems from the undecidability of deduction and the explosion
of knowledge. I wonder if people are interested in computer systems that
can produce knowledge (such as the procedure for constructing a pair of
Rock Shox) by applying inference rules to a giant knowledge base.


-- 

Henry Choy
choy@cs.usask.ca

What rolls down stairs alone or in pairs            This has been brought to 
Rolls over your neighbor's dog?                     you by the numbers 4
What's great for a snack and fits on your back?     and 9 and the letter P.
It's Log, Log, Log!  -- "The Log Song", from            -- Big Bird
                         Ren & Stimpy

Math is tough!       -- Barbie
From: Chad.Armstrong@f52.n357.z1.fidonet.org (Chad Armstrong)
Sender: postmaster@eilc.fidonet