omniomni/omni-engineering huggingface dataset:
IEEE 1675-2008. IEEE 1675-2008 was a standard for broadband over power lines developed by the IEEE Standards Association.  It provided electric utility companies with a comprehensive standard for safely installing hardware required for Internet access capabilities over their power lines.

The standard was published 7 January 2008. The IEEE 1901 standard was another related attempt published in 2011.

See also

Power-line communication

External links
 
 IEEE P1675 Official site 

IEEE standards
Z2 (computer). The Z2 was an electromechanical (mechanical and relay-based) digital computer that was completed by Konrad Zuse in 1940. It was an improvement on the Z1 Zuse built in his parents' home, which used the same mechanical memory. In the Z2, he replaced the arithmetic and control logic with 600 electrical relay circuits, weighing over 600 pounds. 

The Z2 could read 64 words from punch cards. Photographs and plans for the Z2 were destroyed by the Allied bombing during World War II. In contrast to the Z1, the Z2 used 16-bit fixed-point arithmetic instead of 22-bit floating point.

Zuse presented the Z2 in 1940 to members of the DVL (today DLR) and member , whose support helped fund the successor model Z3.

Specifications

See also
 Z1
 Z3
 Z4

References

Further reading

External links
 Z2 via Horst Zuse (son) web page

Electro-mechanical computers
Z02
Mechanical computers
Computer-related introductions in 1940
Konrad Zuse
German inventions of the Nazi period
1940s computers
Computers designed in Germany
Asp (rocket). ASP (Atmospheric Sounding Projectile) is the designation of an American sounding rocket family. ASP was used for a variety of uses, including research into hypersonic speed and to propel rocket sleds. In NASA service it was flown from a number of locations as a sounding rocket.  The selection by NASA of the Apache and Javelin rockets for the jobs performed by ASP led to its retirement.

Versions

ASP-I 
ASP-I was used to sample nuclear explosions and resultant clouds The ASP was the fastest single stage sounding rocket when developed. The Asp was manufactured by Cooper Development Corporation, California. The solid propellant motor was made by Grand Central Rocket company.

The ASP-I has a payload ability of 11 kg, a maximum flight height of 110 km, a takeoff thrust of 42.00 kN, a mass of 111 kg, a diameter of 0.17 m, a length of 3.68 m and a fin span of 0.51 m. 

ASP-I was launched 30 times from December 1, 1955 to June 14, 1962 from White Sands, Cape Canaveral, Point Mugu, Bikini, China Lake, Mercury site and Tonopah.

ASP-II 
ASP-II (Cleansweep I) had a slightly lower total impulse and a significantly shorter burn time (3.6 seconds vs. 5.6). Cleansweep I was used to collect particulate air sample from nuclear explosions at the Nevada Test Range. It was launched once in 1959 from Tonopah with an apogee of 30 km.

ASP-III 
ASP-III (Cleansweep II) had slightly lower specs. It was also modified for use in the South Pacific. Two or four LOKI rockets were strapped on the basic ASP. Results were less than expected and ASP-III was a failure. It was launched four times from White Sands between 1957 and 1958.

ASP-IV 
ASP-IV used an ASP motor case with B.F. Goodrich E-107M propellant. It was launched two times, on May 18 and 19, 1960 from Wallops Island to an apogee of 80 km.

ASP-V 
ASP-V was to utilize a polysulfide propellant but erratic burning and resultant burn through proved insoluble. ASP-V was canceled.

ASPAN 
ASP was combined with a Nike booster to create the ASPAN which exceeded performance of the Nike-Cajun and Nike Deacon.

Pogo-Hi-III 
This is a single stage vehicle using an ASP motor, intended as a high-altitude radar target. It was launched three times from White Sands in 1959 to an apogee of 60 km.

ASCAMP 
When ASP-I was combined with a one-fifth scale Sergeant this was designates as ASCAMP (also known as Nike-ASP). ASCAMP had  to be launched from a remotely controlled launcher due to the necessary closeness to the nuclear blast. It was launched 27 times in August 1958 from Johnston Island to an apogee of 100 km.

Stages 
The following table summarizes the various ASP versions and stages:

References

Books

Sounding rockets of the United States
Canadair CL-227 Sentinel. The CL-227 Sentinel is a remote-controlled unmanned aerial vehicle (UAV) made by Canadair.

It displays a distinctively unusual bulbous peanut shaped profile which gave it its nickname of the flying peanut. Lift is provided by a set of coaxial rotors emanating from the waist of the system. The engine air is exhausted upwards to minimize the infrared signature. The blades are made of composite materials as well as all the external skin and legs, in an attempt to reduce the radar signature. The main structure is made mostly of aluminium.
 
The CL-227 was designed in 1977, and the "phase one" prototype made its first flight on 25 August 1978; the larger production "phase two" vehicle first flew untethered on 14 December 1981. Following evaluation by NATO in March 1982, and was made available to NATO allied clients in the early 1980s. In the late 1990s it was replaced by an updated version, the CL-327.

Bombardier Aerospace CL-327 Guardian

The CL-327 was developed as an upgraded and advance version of the CL-227. The new UAV production line began in 1996 under Bombardier Aerospace, which acquired the assets of Canadair, the original developer of the CL-227.

Specifications (CL-227 Phase 2)

See also
 Canadair CL-289

References

Citations

Bibliography
 Jane's All the World's Aircraft, 1987-88 edition. McGraw-Hill, 1987; p.816

External links
 CL-227 Sentinel and CL-327 Guardian

CL-227
Unmanned aerial vehicles of Canada
Coaxial rotor helicopters
1980s Canadian helicopters
Unmanned helicopters
Single-turbine helicopters
Aircraft first flown in 1978
GG45. GG45 (GigaGate 45) and ARJ45 (Augmented RJ45) are two related connectors for Category 7, Category 7A, and Category 8 telecommunication cabling. The GG45 interface and related implementations are developed and sold by Nexans S.A., while the ARJ45 interface and related implementations are developed and sold by Bel Fuse Inc. The electrical performance of each is compliant with IEC 61076-3-110, as published by the International Electrotechnical Commission. Furthermore, the ARJ45 connector meets the mechanical dimensions specified in IEC 61076-3-110.

Details
The GG45 and ARJ45 connectors operate in the frequency band between 600 MHz and 5 GHz with shielded twisted pair and twinax cables. To reduce crosstalk, two of the four pairs have been moved so that each pair occupies one corner.

GG45 is a variant of ARJ45 that allows for cables terminated with male 8P8C (AKA RJ45) connectors to be plugged into GG45 jacks.  However, GG45 cables cannot plug into 8P8C jacks as a protrusion on the socket is designed to activate a switch on the jack for the alternative contact positions.

Combined with an internal system of Faraday cages, the GG45 interface therefore has plenty of headroom, plus the ability to migrate to higher speed service by upgrading to Category 7A patch cords that activate the switch in the jack.

There are two main variants of GG45/ARJ45:
 GG45 or ARJ45 HD is the full connector with 12 contacts, providing a Category 6 cable interface (100/250 MHz) for older devices as well as the new interface.
 ARJ45 HS is the version without the Cat-6–compatible contacts, for a total of 8 contacts.

   1 2 3 4 5 6 7 8 
|‾‾█‾█‾█‾█‾█‾█‾█‾█‾‾|     Pinout of GG45 and ARJ45 HD sockets. The protrusion ▒▒▒
|                   |     activates a switch, redirecting the 3-6 and 4-5 pairs to
|                   |     the corners on a GG45 jack (3′ and 6′, and 4′ and 5′).
|_█_█▒▒▒█_█_|
  3′6′  |   |   4′5′      ARJ45 HS omits the Cat-6–compatible 3-6 and 4-5 pairs.
         |_|

See also
 TERA

References

External links 
 ARJ45 Modular Connector
 LANmark GG45 Connector

IEC 61076-3
Networking hardware
Sigmar Wittig. Dr. Sigmar Wittig (born 25 February 1940 in Nimptsch, former Silesia region of Germany) has been the chairman of the executive board of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt) since March 2002. He was the chair of the European Space Agency Council for a two-year term between 1 July 2005 and 30 June 2007.

Professor Wittig was instrumental in starting an exchange program between Purdue University and the University of Karlsruhe called the Global Engineering Alliance for Research and Education (GEARE).

Curriculum vitae 
He studied mechanical engineering at the RWTH Aachen, finishing with a doctorate in 1967. This was followed by a nine-year spell in the U.S., as an associate professor at Purdue University.

In 1976, he went back to Germany to the University of Karlsruhe, to lead the Institute of Thermal Turbomachinery. From 1994 to 2002, he was president of the university.

References

External links 
 ESA press release on Dr Wittig's appointment
 Biography of Sigmar Wittig at the German Aerospace Center

1940 births
Living people
People from Niemcza
European Space Agency personnel
People from the Province of Silesia
Officers Crosses of the Order of Merit of the Federal Republic of Germany
German expatriates in the United States
RWTH Aachen University alumni
Paper pallet. A paper pallet or ecopallet is a shipping or display pallet made from paperboard.

Construction 

Paper shipping pallets come in corrugated fiberboard, partial wood decks or engineered with laminated paperboard. Some are made of paperboard composite honeycomb. Several designs have been developed.

See also 
 Unit load

References

Further reading 
 Fiedler, R. M, "Distribution Packaging Technology", IoPP, 1995
 McKinlay, A. H., "Transport Packaging", IoPP, 2004 
 Soroka, W, "Fundamentals of Packaging Technology", IoPP, 2002, 
 Yam, K. L., "Encyclopedia of Packaging Technology", John Wiley & Sons, 2009, 

Pallets
Scout Electromedia. Scout Electromedia (originally Scout Electronics) was a late 1990s wireless consumer product company based in San Francisco. It was founded by Dan Bomze, William Cockayne, and Geoff Pitfield.

The company created the modo handheld wireless device which delivered up-to-the-minute entertainment information to urban youth in New York, San Francisco, and Los Angeles.

The product received high praise in a wide array of press from Playboy to the New York Times. It was venture backed by Flatiron Partners, TechFund, and idealab!. However, the backers ran into financial problems in the wake of the dot-com crash, and funding dried up, which resulted in the swift end of Scout. Ultimately the service ran for just two months in New York and San Francisco, with the company going out of business one day before the scheduled launch in Los Angeles.

The company's chief executive, Geoff Pitfield was fired on October 20, 2000. By the time it was wound up the company employed 84 people.

References

Defunct computer companies of the United States
Defunct computer hardware companies
ROF Thorp Arch. ROF Thorp Arch was one of sixteen Second World War, UK government-owned Royal Ordnance Factory, which produced munitions by "filling" them. It was a medium-sized filling factory (Filling Factory No. 9).

It was located on the banks of the River Wharfe, north-east of the two villages of Boston Spa and Thorp Arch; and four miles south-east of the town of Wetherby, West Yorkshire in England.

Design and production

War time
The Royal Ordnance Factory was constructed for the Ministry of Supply, with the Ministry of Works acting as agents. The site was connected to the London & North Eastern Railway line, which was used in its construction and then for supplying raw materials to the factory and for transporting away filled munitions.

Construction work on Thorp Arch began on 18 May 1940 and the completion date was scheduled for the end of July 1941.  The site was divided into a number of separate Filling Groups which occupied different areas of the site and were devoted to filling specific type of ammunition. It produced munitions for both the Army and the Royal Air Force. It is believed to have had 619 buildings.

In the Second World War it produced light gun ammunition, medium gun ammunition, heavy ammunition, land mines and trench mortar ammunition for the Army; medium and large bombs for the RAF; and, 20 mm and other small arms ammunition for all three services.  Some of these were produced in quantities measured in millions and hundreds of millions of items.

Post-war
ROF Thorp Arch closed down twice: firstly, after the end of the Second World War; and then finally, in April 1958 four years after the end of the Korean War, as a result of planned cuts in the British Army published in the 1957 Defence White Paper.

Current use
Part of the site is now in use as the Thorp Arch Trading Estate. Other parts are used to house the Northern Reading Room, Northern Listening Service and Document Supply Centre of the British Library. Another part is a prison, originally HMP Thorp Arch, now HMP Wealstun.

See also
List of prisons in the United Kingdom
List of Royal Ordnance Factories
Filling Factories in the United Kingdom

References

Sources

External links
 The ROF site has been described in detail in two articles by Mike Christensen, illustrated with official photographs taken whilst it was still open.
Location Map
Aerial view
Thorp Arch Trading Estate

Filling factories
Royal Ordnance Factories in England
Master electrician. In theatre, the master electrician (or chief electrician in the UK) is responsible for implementing the lighting design for a production drawn up by the lighting designer. This involves overseeing the preparation, hanging, connection and focusing of stage lighting fixtures.

This can be done on a show-by-show basis, or as a resident position of a specific theatre. The tool of the trade of the theatrical master electrician is the adjustable spanner or crescent wrench, used to secure stage lighting instruments from lighting positions in the theatre. This wrench is typically attached to the belt or wrist with a lanyard, which is important because the master electrician tends to work at great height, from ladders, lift tables, catwalks, or lighting trusses, where a falling wrench may hurt people or damage property below.

Duties 
The master electrician supervises and is responsible for all other electricians working on any construction or installation project. Only the master electrician can pull the permits with the electrical authority, and they can only be registered with one electrical contracting company at any one time.
Other electrical duties performed by any electrician include:
 Inventory and repair and maintenance of all lighting fixtures, cables, effects, power distribution, dimmers, networking and lighting control consoles.
 Organisation and purchasing of all consumables including color gel, gobos, Sharpies, and gaffer tape.
 Planning and implementing of the cabling (circuiting) of lights and electric power distribution.
 Documenting and tracking of all circuiting, addressing, and system configuration in cooperation with the Lighting Designer.
 Patching assignments of the control console based on the paperwork generated by the lighting designer and the planned circuiting.
 Occupational safety and health of workers and operational decisions as the head of the electrics department.

Training, origin, and professional affiliations 
Master electricians go through extensive on-site and classroom training, with work in more formal settings such as schools or colleges. The designation "master" is only given to electricians who can display extensive job knowledge and are tested to have an extensive understanding of the electrical safety code.

There are no formal certifications of the "theatrical title, master electrician", as there are in some of the more mainstream trades, but in March 2003 ESTA developed a certification process. Those who pass this rigorous test will become ETCP Certified Entertainment Electricians - and will be recognized as the industry's best. The stagehands union, IATSE, come close in that they offer apprentice and journeyman levels of certification. In the future, IATSE, or some of the larger local affiliations may form a more formal method of certification, which may include the title of master electrician. In the meantime, almost every production, from high school shows to Broadway uses the term to describe their primary electrician, regardless of their skill level or experience.

References

Stage lighting
Theatrical occupations
Television terminology
Broadcasting occupations
EPoX. EPoX was a manufacturer of motherboards, video cards and communication products.  They manufactured mainboards for AMD and Intel processors, which were renowned for being overclocker-friendly yet affordable.  Many of their products used the same StudlyCaps naming convention as the company itself.

History

EPoX Computer Company was established in February 1995. In 1998 the company entered the communications field. EPoX has been listed since November 1999 on the Taiwan Stock Exchange. (TAIEX: 5414)

EPoX was the first mainboard producer in the industry to announce the user-friendly technology KBPO (Keyboard Power On) in 1997. Their mainboards were manufactured in Jong Ho City, Taipei, and Ning-Bo Science Based Industrial Park, China.

All branches (Taiwan, German, United States and Dutch) of EPoX closed in 2007.

EPoX's old employees started a new company in 2009 called SUPoX which is only active in China.

SUPoX supports all EPoX boards beginning from Slot 1 on their site.

See also
 List of companies of Taiwan

External links 

SUPoX support page for EPoX boards
An archived version of the EPoX.com website

Computer companies of Taiwan
Defunct computer hardware companies
Taiwanese companies established in 1995
Electronics companies established in 1995
Motherboard companies
Companies based in Taipei
Electronics companies of Taiwan
Marc Seguin. Marc Seguin (20 April 1786 – 24 February 1875) was a French engineer, inventor of the wire-cable suspension bridge and the multi-tubular steam-engine boiler.

Early life
Seguin was born in Annonay, Ardèche to Marc François Seguin, the founder of Seguin & Co., and Thérèse-Augustine de Montgolfier, a niece of the pioneer hot air balloonist Joseph Montgolfier.

Career

Bridges

Seguin was an inventor and entrepreneur who developed the first suspension bridge in continental Europe. He built and administered 186 toll-bridges throughout France.
At the 1823 Exposition des produits de l'industrie française a model was exhibited of a planned suspension bridge which would span the Rhône from Tain-l'Hermitage to Tournon-sur-Rhône. The bridge, designed by Seguin, was completed in 1825.

Steam locomotives

Shortly after the Stockton and Darlington Railway in England opened (1825) he visited it and observed George Stephenson's Locomotion in operation and acquired two of his engines, which however proved unreliable in French conditions. In 1829, he delivered two steam locomotives of his own design to the Saint-Étienne–Lyon railway. These used an innovative multi-tube boiler and also prominent mechanically-driven fans to provide draught on the fire, rather than Stephenson's blastpipe. This boiler resembled the later Scotch marine boiler in some aspects, in that the boiler had a large single flue from the furnace, then many small-diameter fire-tubes returning to a chimney above the firebox door. Uniquely, Seguin's design also arranged the furnace in a large square water-jacketed firebox beneath the boiler to provide a large grate area and greater heating capacity. Robert Stephenson had also made the same decision with his Rocket, but placed his firebox separately and behind the main boiler shell. Seguin's boiler enabled steam-engine trains to increase power and velocity from 4 miles per hour to 25 miles per hour, making railroad a more viable mode of transportation.

Other businesses
Inventor and entrepreneur, teaming with his brothers, Camille, Jules, Paul and Charles, as well as his brother in law Vincent Mignot he continued his father's successful business in textiles, paper, gas-lighting, coal mines, construction and added to it a railroad company and a bridge construction business.

Honours
Marc Seguin was voted into the Académie des Sciences in 1845, was made a Knight (Chevalier) of the Légion d'honneur in 1836 and an Officer in 1866, and wrote numerous books on the use of physics and mathematics in building bridges and locomotives engines.  His name is one of the 72 names inscribed on the Eiffel Tower.

See also
 List of works by Eugène Guillaume
Locomotive Seguin

References

External links 

 Biography and list of works
 .

1786 births
1875 deaths
People from Annonay
People of the Industrial Revolution
French bridge engineers
19th-century French inventors
French science writers
French railway pioneers
French railway mechanical engineers
Locomotive builders and designers
Members of the French Academy of Sciences
Recipients of the Legion of Honour
French male non-fiction writers
SDD. SDD may refer to:

Computing 
 Software Design Description (IEEE 1016–2009), a standard that specifies the form of the document used to specify system architecture and application design in a software-related project
 Software Design Document, a written outline of the development of a course or a description of a software product

 Solution Deployment Descriptor, a proposed OASIS standard for software deployment, configuration and maintenance
 Software Design and Development, an HSC subject in NSW that details the basics of designing and developing software applications
 Syntax-Directed Definition - a context-free grammar with attributes and rules
 Sentential Decision Diagram, a formalism in knowledge compilation and artificial intelligence

Finances 
 SDD, for SEPA Direct Debit, a payment system in the Single Euro Payments Area in Europe
 SDD, ISO code for the Sudanese dinar, the currency of Sudan 1992–2007, now replaced by the Sudanese pound

Science
 Sulfadimidine, an antibiotic whose abbreviations include SDD
 Shared delusional disorder, a psychiatric syndrome
 Silicon drift detector, a p-n junction-based detector for ionizing radiation, such as for X-rays
 Seasonal deficit disorder, another name for seasonal affective disorder
 Symmetric diagonally dominant matrix systems in mathematics
 Selective decontamination of the digestive tract in medicine
Ōno Kōjin. is a toy designer employed by Takara since 1980. Ōno's early designs included the Diaclone Walk-In Centre and Microman Acro Saturn. He designed most of the Diaclone Car Robot line (with additional design work by Shoji Kawamori) and Car Microman figures, which drew the attention of the U.S. toy company Hasbro. Hasbro amalgamated the Diaclone and Microman figures and, along with a story treatment developed by Marvel, created the toy cult phenomenon known as the Transformers. Ōno continued to design Transformers throughout the 1980s until the end of the original series.

Ōno designed most Transformers manufactured by Takara, including Metroplex, Fortress Maximus and Powermaster Optimus Prime. Among the hundreds of Transformers that he designed, he considers the Decepticon Triple Changers Blitzwing and Astrotrain to be his finest achievements in toy design.

Although Ōno no longer designs Transformer toys, as of 2005 he is still employed by Takara where he continues to design figures in other Takara toylines.

References

External links
 Takara Staff Interview: Ōno Kōjin
 Official Takara Transformers site 

Toy inventors
Mechanical designers (mecha)
Living people
1959 births