omniomni/omni-engineering huggingface dataset:
PC-6000 series. The PC-6000 series is a series of 8-bit home computers introduced in November 1981 by NEC Home Electronics. There are several models in this series, such as the PC-6001, the PC-6001 MK2 and the PC-6001 MK2 SR. There is also an American version, called the NEC TREK or NEC PC-6001A. 

Several peripherals were available for the system in North America, including an expander with three cartridge jacks (some of the cartridge-based games used two cartridges), a cassette-tape recorder, a 5.25" floppy disk drive, a printer, and a touchpad.

The PC-6000 series was followed by the PC-6600 series.

Development 
 was a subsidiary of NEC and a manufacturer of consumer electronics. They started manufacturing the PC-8001 and its peripherals which were developed by the Electronic Devices Group of Nippon Electric. It was successful and grew the personal computer market in Japan. 

They started developing a low-cost home computer, and it became the PC-6001. At the same time, the Electronic Devices Group developed the PC-8801 for home and business, and the Information Processing Group developed the PC-9801 for business market. 

In 1983, New Nippon Electric changed its name to NEC Home Electronics. At that time, NEC group had four personal computer lines come out from different divisions. To avoid conflict, they decided to consolidate personal computer business into two divisions; NEC Home Electronics dealt with the 8-bit home computer line, and the Information Processing Group dealt with the 16-bit personal computer line. 

NEC Home Electronics discontinued development of the PC-6000 series, the PC-6600 series, and the PC-8000 series. These lines were merged to the PC-8800 series.

PC-6001 

The PC-6001 has the μPD780 processor (NEC clone of Zilog Z80), 16 KB RAM (up to 32 KB), General Instrument AY-3-8910 3-voice sound generator, a ROM Cartridge connector, a cassette tape interface, 2 x joystick port, a parallel printer connector, an RF modulator output and a composite video output. The ROM cartridge allowed the user to easily use software such as video games. 

It supports four screen modes; 32x16 characters with 4 colors, 64x48 pixel graphics with 9 colors, 128x192 graphics with 4 colors, and 256x192 graphics with white and green colors. 

The Japanese version uses a chiclet keyboard while a North American version (PC-6001A) uses a typewriter keyboard.

PC-6001 MK2 

The PC-6001 MK2 has 64 KB memory, 16 KB video RAM, a -inch 2D floppy drive interface, Kanji character generator, RGB monitor out, speech synthesizer unit and a typewriter keyboard. 

It supports following screen modes: 40x20 characters, 80x80 pixel graphics with 15 colors, 160x200 graphics with 15 colors, and 320x200 graphics with 4 colors.

References 

Pc-6001
Z80-based home computers
Computer-related introductions in 1981
PC-6600 series. The NEC PC-6600 Series were a lineup of personal computers produced by the NEC Corporation in 1985. They were essentially a PC-6001 MK2 with a built-in 3.5" floppy disk drive. Two models in this series were produced: the PC-6601 and the PC-6601 SR.

References 
OLD-COMPUTERS.COM: The Museum: NEC PC 6601

PC-6601
Computer-related introductions in 1985
Z80-based home computers
Elmore delay. Elmore delay is a simple approximation to the delay through an RC network in an electronic system.  It is often used in applications such as logic synthesis, delay calculation, static timing analysis, placement and routing, since it is simple to compute (especially in tree structured networks,  which are the vast majority of signal nets within ICs) and is reasonably accurate.  Even where it is not accurate, it is usually faithful, in the sense that reducing the Elmore delay will almost always reduce the true delay, so it is still useful in optimization.

Elmore delay can be thought of in several ways, all mathematically identical.
For tree structured networks, find the delay through each segment as the R (electrical resistance) times the downstream C (electrical capacitance).  Sum the delays from the root to the sink.
Assume the output is a simple exponential, and find the exponential that has the same integral as the true response.  This is also equivalent to moment matching with one moment, since the first moment is a pure exponential.
Find a one pole approximation to the true frequency response.  This is a first-order Padé approximation.

There are many extensions to Elmore delay.  It can be extended to upper and lower bounds, to include inductance as well as R and C, to be more accurate (higher order approximations) and so on.  See delay calculation for more details and references.

See also 
Delay calculation
Static timing analysis
William Cronk Elmore

References

Electronic engineering
Electronic design
Electronic design automation
Integrated circuits
Horn car. Horn car was a name given to a range of dealer-modified passenger cars, usually Ford Falcons, sold at Australian Ford dealers in the 1970s. The term "horn car" comes from the Horn Car Accessories company which supplied the parts used to modify the cars.

Horn cars were an initiative taken by Max McLeod, who owned a Ford dealership in Rockdale, New South Wales, a suburb of Sydney. McLeod would add a range of visual modifications to his Falcons - typically spoilers, sunroofs and wild tape striping along the side of the vehicle - in order to make them stand out from the crowd and give his customers the chance to buy a "unique" vehicle. The concept proved popular and was soon employed by other Ford dealers around Australia.

External links
 

Modified vehicles
Scheme 48. Scheme 48 is a programming language, a dialect of the language Scheme, an implementation using an interpreter which emits bytecode. It has a foreign function interface for calling functions from the language C and comes with a library for regular expressions (regex), and an interface for Portable Operating System Interface (POSIX). It is supported by the portable Scheme library SLIB, and is the basis for the Scheme shell Scsh. It has been used in academic research. It is free and open-source software released under a BSD license.

It is called "Scheme 48" because the first version was written in 48 hours in August 1986. The authors now say it is intended to be understood in 48 hours.

Implementation

Scheme 48 uses a virtual machine to interpret the bytecode, which is written in a restricted dialect of Scheme called PreScheme, which can be translated to C and compiled to a native binary. PreScheme, or Pre-Scheme, is a statically-typed dialect of Scheme with the efficiency and low-level machine access of C while retaining many of the desirable features of Scheme.

References

External links
 

Scheme (programming language) interpreters
Scheme (programming language) implementations
Software using the BSD license
Arta Industrial Group. The Arta Industrial Group is a multinational conglomerate company headquartered in Tehran, Iran.

History

He established Arta Moquette in 1980 as a producer of needle nonwoven carpets in Iran. Arta Industrial Group has grown into a carpet and textile raw materials producer. In 2002, Arta Industrial Group decided to invest on hard flooring industries. Arta Group decided to invest in automobile industry.

Textile industries

 Non woven Carpet
 Tufted Carpet
 Carpet
 Yarn
 Fiber
 Latex

Energy 

 Arta Energy invested on wind power mills.

Wood industries 

  Arta Pan is a manufacturer of wood-based panelx.
  Arta Clic is a producer of laminate flooring.
  Arta Decor is a decor paper impregnation manufacturer.

Packaging industries 

 Arta Plast is a producer of blown film and flexible packaging products.

Electronics industries 
Arta Electronics started the business in the assembling line to produce TV, LCD TV, with the brand (marshal) in Iran.

Petrochemical industries 

 Arta Energy is a producer of petrochemical materials

Automobile industries 
Arta Tech Motor is completely owned by Arta Industrial Group.

Targets 
Invest on new 1200 cubic meter MDF production line in 2015.

Manufacturing companies based in Tehran
Titanowodginite. Titanowodginite is a mineral with the chemical formula MnTiTa2O8. Titanowodginite has a Mohs hardness of 5.5 and a vitreous luster. It is an iridescent dark brown to black crystal that commonly forms in a matrix of smoky quartz or white beryl in a complex zoned pegmatite.

It was first described in 1992 for an occurrence in the Tanco Mine located in southern Manitoba, Canada.  It was named because it is a titanium bearing member of the wodginite group.

References 

Oxide minerals
Titanium minerals
Manganese(II) minerals
Tantalum minerals
Monoclinic minerals
Minerals in space group 15
Minerals described in 1992
A-Jacks. A-Jacks are a commercially made concrete product used in both open channel and coastal applications. They consist of two concrete T-shaped pieces joined perpendicularly at the middle, forming six legs. They are a product owned and patented worldwide by Poseidon Alliance Ltd.

Applications
Open channel applications include bank stabilization, flow and grade control, scour protection for bridge piers, and biostabilization. The primary mechanism of protection employed is an increase in the relative roughness of the channel bank (as characterized by the Manning's Roughness Coefficient); the Manning's n is relatively high at 0.1. The advantage of A-Jacks over other hard armoring solutions is the comparatively large area available in the interstitial spaces for native vegetation to take root, ultimately helping to restore the stream bank to a more natural state while continuing to protect against erosion.

In coastal applications A-Jacks are used as breakwaters, revetments, artificial reefs, and habitat development. In breakwater applications, A-Jacks can be an economical alternative to quarried rock, which can be both heavier and unwieldy; over the course of a breakwater construction project, the number of transportation cycles to deliver product to the site can be reduced substantially, since A-Jacks are delivered flat on trucks whereas rock rip-rap would be brought in dump trucks. For example, rock can weigh between 150-175 lb; a suitable rip-rap boulder comparable to a 96 inch A-Jacks unit (about 36 c.f.) would weigh about 5800 pounds, about 16% more than the A-Jacks unit. A-Jacks also have the advantage of being interlocking and self-stabilizing. For artificial reefs and habitat development, typical reef-building biota find areas of low turbulence within the open spaces to establish colonies.

See also

References

Wave-dissipating concrete blocks
Deming station. Deming station is an Amtrak train station at 400 East Railroad Boulevard in Deming, New Mexico. The station consists of a simple metal shelter with a bench inside (sometimes derisively called an "Amshack") with train information posted on a sign outside. There is no platform at this station, trains stop at a paved vehicle crossing where passengers board.

History 

In March 1881, the second transcontinental railroad, uniting the Atchison, Topeka, and Santa Fe Railway from the east with the Southern Pacific Railway from the west, was completed at Deming. To mark the occasion, a silver spike was driven to connect the rails. Deming subsequently received a large two-story "union depot" that in 1930 was remodeled into a one-story structure.

The original old wood depot has since been moved and repurposed.

References

External links

Deming Amtrak station information 

 Deming Amtrak Station (USA Rail Guide -- Train Web)

Amtrak stations in New Mexico
Buildings and structures in Luna County, New Mexico
Transportation in Luna County, New Mexico
Railway stations in the United States opened in 1881
Former Southern Pacific Railroad stations
Former Atchison, Topeka and Santa Fe Railway stations
1881 establishments in New Mexico Territory
Skyrail. Skyrail may refer to the following:

Transport 
 AirRail Link people mover at Birmingham Airport, England, formerly known as SkyRail
 BYD Skyrail, a commercial monorail system
 Skyrail Midorizaka Line in Hiroshima, Japan
 Skyrail Rainforest Cableway in Queensland, Australia
 Elevated sections of the Pakenham/Cranbourne railway lines in Melbourne, Australia built as part of Victoria Government's Level Crossing Removal Project

Other 
A level in the computer game 007: Nightfire
Trans European Services for Telematics between Administrations. The Trans European Services for Telematics between Administrations (TESTA) system is the private IP-based network of the European Union. TESTA is a telecommunications interconnection platform for secure information exchange between the European and member states administrations. It is currently handled within the ISA² European programme.

TESTA is not a single network, but a network of networks, composed of the EuroDomain backbone and Local Domain networks. The EuroDomain is a European backbone network for administrative data exchanges acting as a network communication platform between local administrations.

History 

The TESTA network has been upgraded several times, with added features through the years:

 1st generation (TESTA): 1996–2000
 2nd generation (TESTA-II): 2000–2006
 3rd generation (sTESTA): 2006–2013
 4th generation (TESTA-NG): since 2013

See also
 European Network and Information Security Agency
 EUDRANET

References

External links 
TESTA official web page
sTESTA overview

European Union
Information technology organizations based in Europe
Mainflingen longwave transmitter. Mainflingen longwave transmitter is a large facility for commercial longwave transmissions at Mainflingen, Hesse, Germany, which was built in 1956. It uses several T- and triangle antennas, which are mounted on guyed masts of lattice steel, insulated against ground. The used masts have heights between 150 metres and 200 metres.

Southeast of the main antenna area, which is completely fenced in, but still north of the motorway A3 there is a further T-antenna, which is mounted on two guyed masts of lattice steel insulated against ground.
Further there is a tower built of prefabricated concrete segments for mobile phone services close to the transmitter building.

All transmitters using the facility have a call sign starting with DCF. The best known of them is DCF77 longwave time signal and standard-frequency radio station.
In earlier times the facility was also used for longwave broadcasting, especially as backup transmitter for Sender Donebach.

See also
 Mainflingen mediumwave transmitter
 List of famous transmission sites

External links

 multiple Antennas in Wikimapia
 single Antenna in Wikimapia
 https://maps.google.com/maps?ie=UTF8&t=h&om=0&z=16&ll=50.007491,9.016171&spn=0.005489,0.014462
 https://maps.google.com/maps?ie=UTF8&t=h&om=0&z=16&ll=50.015695,9.011836&spn=0.005488,0.014462

Radio masts and towers in Germany
Buildings and structures in Offenbach (district)
1956 establishments in West Germany
Peptide computing. Peptide computing is a form of computing which uses peptides, instead of traditional electronic components. The basis of this computational model is the affinity of antibodies towards peptide sequences. Similar to DNA computing, the parallel interactions of peptide sequences and antibodies have been used by this model to solve a few NP-complete problems.  Specifically, the hamiltonian path problem (HPP) and some versions of the set cover problem are a few NP-complete problems which have been solved using this computational model so far. This model of computation has also been shown to be computationally universal (or Turing complete).

This model of computation has some critical advantages over DNA computing. For instance, while DNA is made of four building blocks, peptides are made of twenty building blocks. The peptide-antibody interactions are also more flexible with respect to recognition and affinity than an interaction between a DNA strand and its reverse complement. However, unlike DNA computing, this model is yet to be practically realized. The main limitation is the availability of specific monoclonal antibodies required by the model.

See also 
Biocomputers
Computational gene
Computational complexity theory
DNA computing
Molecular electronics
Parallel computing
Unconventional computing
Molecular logic gate

References 

Classes of computers
Models of computation
Molecular biology
Bill Emery (engineer). William Hubert "Bill" Emery (born 28 June 1951) is an engineer who was the chief executive officer of the Office of Rail Regulation from 2005 to 2011. From 1990 to 2005 he was the chief engineer of Ofwat.

After attending Queen Elizabeth Grammar School, Wakefield, Emery studied at Sheffield University, where he subsequently received a BEng degree in civil and structural engineering in 1972 and a PhD degree in public health engineering in 1976. He also obtained an MBA from Bradford University in 1987.

References

External links 
 ORR Corporate structure

British railway mechanical engineers
Living people
1951 births
Beltweigher. A beltweigher or belt weigher, more commonly known as a belt scale, is a piece of industrial control equipment used to measure the mass and flow rate of bulk material traveling over a conveyor belt.  Invented by Herbert Merrick in the early 1900's, belt weighers are commonly used in plants and heavy industries, such as mining. 

Belt weighers replace a short section of the support mechanism of the belt, which might be one or more sets of idler rollers, or a short section of channel or plate.   This weighed support is mounted on load cells, either pivoted, counterbalanced or not, or fully suspended. The mass measured by the load cells is integrated with the belt speed to compute the mass of material moving on the belt, after allowing for the mass of the belt itself. Belt weighers generally include the necessary electronics to perform this calculation, often in the form of a small industrialized microprocessor system.

A belt weigher is normally mounted in a well supported straight section of belt, with no vertical or sideways curvature, and as close to level as is practicable.  The weighed support must be aligned vertically and horizontally with the adjacent supports to avoid tensile forces in the belt skewing the measurement.
Due to the belt tension variation, frequent check calibration must be done. 

Outputs from belt weighers are typically:
 pulses at predefined increments of mass
 an analogue signal proportional to the flow rate

Some belt weigher controllers offer features such as driving output to stop the belt when a predefined mass of material has been measured, or a range of alarms to indicate nil flow, belt slippage, and belt stoppage.

References 

Industrial equipment
Weighing instruments
Christian Dancel. Christian Dancel (February 14, 1847 – October 13, 1898) was a German-American inventor. He was most notably under contract with the Goodyear Shoe Machinery Company of Connecticut.

Biography 
Christian Dancel was born in Kassel, Electorate of Hesse on February 14, 1847. He learned mechanical engineering and machinist trades in polytechnic schools. In 1865, within two years of his emigration to New York City, he had invented a machine for sewing shoes.

Charles Goodyear Jr. (son of Charles Goodyear) bought the rights to this machine, and employed Dancel as superintendent of his factory. Soon thereafter, Dancel theorized, created and patented many shoe-construction machines and associated devices. These included a machine to sew a turned shoe, one of which was converted into a "stitcher", and stitch a shoe's out soles. In 1874, he created and installed a shoe welt guide to stitch shoe welts on it. This machine, purchased by his employer, is currently in use today (with only minor improvements to it added).

In 1876, Dancel simultaneously opened his own shop of patented machines used to finish shoes. Over an eight-year time span, at the Goodyear Company's request, he invented a machine with a curved needle which sewed a shoe's outer sole and upper sole with a lockstitch (an improvement over the previous model). He presented it to the Goodyear Company in 1885. He followed this in 1891 with a straight-needle machine delivered a year later. Around 1895, he developed the Brooklyn-based Dancel Machine Company. Just prior to his death, he created a machine which performed all of the aforementioned functions plus stitched the in-sole, all caught with one stroke of the needle.

Dancel's solution of various shoe-related stitch-forming problems is the foundation upon which the current Goodyear welt system is based. He also co-patented machines designed for manufacturing barbed-wire fencing, for skiving leather, to gage and mark leather, for making leather buttonholes, for rubbing type, and for removing bristles from seal skins.

He died at his home in Brooklyn, New York on October 13, 1898.

References

External links

1847 births
1898 deaths
Businesspeople from Kassel
People from the Electorate of Hesse
Immigrants to the United States
Shoemakers
American manufacturing businesspeople
19th-century American businesspeople
Athena Technologies. Athena Technologies was a developer and manufacturer of control and navigation solutions for unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs). In April 2008, Athena was purchased by Rockwell Collins, Inc. for US$107 million.

Athena Technologies was founded in 1998. It was headquartered in Warrenton, Virginia. The company was created to develop and commercialize flight control technologies. Athena founder Dr. David Vos studied control theory at the Massachusetts Institute of Technology (MIT) where he proved the control technology by developing the first autonomous unicycle. In August 2014, Dr. Vos became the head of Google's Project Wing.

Athena's GuideStar product line provides INS/GPS solutions that integrate IMU, GPS, magnetometer and air data signals for dynamic maneuvering. Athena's products have been deployed on a variety of unmanned systems.

References

External links
 Archive of the official website
 Athena Technologies Selected to Provide Guidance and Navigation to EMT’S LUNA Unmanned Aerial Vehicle, Business Wire
 EMT selects Athena's GuideStar for Luna UAV conducting surveillance in Kosovo, Afghanistan, Pakistan 
 NPR story: Technology for Unmanned Planes Shown in Paris
 Manned/Unmanned communities edge closer
 SEC filing

Manufacturing companies based in Virginia
Navigation system companies
Companies based in Virginia
Fauquier County, Virginia
Science and technology in Virginia