omniomni/omni-engineering huggingface dataset:
Vega Aircraft Corporation. The Vega Aircraft Corporation was a subsidiary of the Lockheed Aircraft Company in Burbank, California responsible for much of its parent company's production in World War II.

History
The company was first formed in August 1937 as the AiRover Company to produce a new light aircraft design. It was renamed in May 1938 to honor Lockheed's first aircraft design, the Vega.

The AiRover Model 1 was a Lockheed Altair fitted with a Menasco Unitwin 2-544 engine, which featured two engines driving a single shaft. The AiRover Model 2 was a new design named the Vega Starliner. One Starliner prototype was built and tested, but the design did not go into production.

In 1940, with World War II already underway in Europe, Vega changed its focus from light aircraft to military aircraft. The company began by producing five North American NA-35 trainers under license with North American Aviation. Production by Vega really got underway with the Hudson, a patrol bomber designed for use by the Royal Air Force.

Vega entered a partnership between three companies (the other two being Boeing and Douglas) (abbreviated BVD) to produce the Boeing B-17 Flying Fortress. Of over 12,000 B-17s produced by war's end, 2,750 were built by Vega. The company also built two experimental B-17 variants, the Boeing XB-38 Flying Fortress and the Boeing YB-40 Flying Fortress.

By the end of November 1943, Vega had merged back into Lockheed, having far surpassed its original mission of producing light aircraft.

Aircraft

See also
Lockheed Vega
California during World War II

References

Notes

Bibliography

 Francillon, René J, Lockheed Aircraft since 1913. Naval Institute Press: Annapolis, 1987.
 Yenne, Bill, Lockheed. Crescent Books, 1987.

External links

 Menasco 2-544 Unitwin Aircraft Engine – Old Machine Press

Lockheed Corporation
Aerospace companies of the United States
Former defense companies of the United States
Defunct aircraft manufacturers of the United States
Manufacturing companies based in California
Companies based in Burbank, California
Manufacturing companies established in 1937
Manufacturing companies disestablished in 1943
1937 establishments in California
1943 disestablishments in California
Langmuir (journal). Langmuir is a peer-reviewed scientific journal that was established in 1985 and is published by the American Chemical Society. It is the leading journal focusing on the science and application of systems and materials in which the interface dominates structure and function. Research areas covered include surface and colloid chemistry.
Langmuir publishes original research articles, invited feature articles, perspectives, and editorials.

The title honors Irving Langmuir, winner of the 1932 Nobel Prize for Chemistry. The founding editor-in-chief was Arthur W. Adamson.

Abstracting and indexing 
Langmuir is indexed in Chemical Abstracts Service, Scopus, EBSCOhost, British Library, PubMed, Web of Science, and SwetsWise.

References

External links 
 

American Chemical Society academic journals
Weekly journals
Academic journals established in 1985
English-language journals
Surface science
1985 establishments in the United States
Sebacoyl chloride. Sebacoyl chloride (or sebacoyl dichloride) is a di-acyl chloride, with formula (CH2)8(COCl)2.  A colorless oily liquid with a pungent odor, it is soluble in hydrocarbons and ethers. Sebacoyl chloride is corrosive; like all acyl chlorides, it hydrolyzes, evolving hydrogen chloride. It is less susceptible to hydrolysis though than shorter chain aliphatic acyl chlorides.

Preparation
Sebacoyl chloride can be prepared by reacting sebacic acid with an excess of thionyl chloride. Residual thionyl chloride can be removed by distillation.

Use 
Sebacoyl chloride can be polymerized with hexamethylenediamine yielding nylon-6,10.

See also
 Sebacic acid
 Adipoyl chloride

References

Acyl chlorides
Monomers
Initng. Initng is a full replacement of the UNIX System V init, the first process spawned by the kernel in Unix-like computer operating systems, which is responsible for the initialization of every other process. Initng's website calls initng "The next generation init system".

Purpose
Many implementations of init (including Sysvinit used in many Linux distributions) start processes in a pre-determined order, and only start a process once the previous process finishes its initialization.

Initng starts a process as soon as all of its dependencies are met. It can start several processes in parallel. Initng is designed to significantly increase the speed of booting a Unix-compatible system by starting processes asynchronously. Initng's supporters claim that it also gives the user more statistics and control over the system.

Development

Despite being still considered beta, it was chosen as the default init system for Pingwinek, Enlisy, Berry Linux and Bee.

Also there are packages for many distributions such as Ubuntu and Fedora, as well as ebuilds for Gentoo and spells for Source Mage.

Contrary to other similar projects, it features a portable and flexible code base, more suited for embedded usage, and has been already ported to other operating systems like Haiku and FreeBSD.

It was created by Jimmy Wennlund. The current maintainer and project lead is Ismael Luceno.

Awards
In Linux Formats Issue 72, in November 2005, InitNG received the Hottest Pick Award.

Process (computing)
Strong Republic Transit System. The Strong Republic Transit System (SRTS) was a program initiated by President Gloria Macapagal Arroyo on June 14, 2003, aimed at integrating the various rail lines providing public transport in Metro Manila, Philippines. It aimed to provide a "reliable, seamless and integrated mass transit system that would be at par with international standards" by unifying existing rail infrastructure under one transit system and fare structure. The Manila Light Rail Transit System (Line 1 and Line 2), the Manila Metro Rail Transit System (Line 3) and the Philippine National Railways (PNR) Northrail and Southrail lines were covered by the SRTS project.

Links
The SRTS project provided seven "links", i.e. interchange stations, where commuters can transfer from one line to another. When the program was initiated, four links were in use. The Santa Mesa and Recto Link were added in April 2004, when the already-under-construction Line 2 became fully operational. The Northrail project was cancelled in September 2012; because of this, the Caloocan Link is missing. The proposed extension of Southrail services to Caloocan, a part of SRTS, was not executed either. The closing of the loop has, as of 2015, almost been completed by extending Line 1 with five new stations, unlike originally outlined by the plan. Line 1 would require one more station to connect it with Line 2. In order of operation, the following links have been realized (colour coding has since changed):

Fare integration
The project aimed to unify fare systems on the lines through contactless smart cards, similar to the Octopus card in Hong Kong and the EZ-Link card in Singapore. The integrated system was not implemented, as the project was dropped. Instead, a weekly ticket, valid on Lines 1-3, was introduced in 2004. For ₱250, one can make unlimited rides per day on Lines 1-3 during one calendar week with the so-called Flash Pass Card.

See also
List of rail transit stations in the Greater Manila Area
Manila Light Rail Transit System
Manila Light Rail Transit System Line 1 (Line 1)
Manila Light Rail Transit System Line 2 (Line 2)
Manila Metro Rail Transit System Line 3 (Line 3)
Philippine National Railways
PNR Metro Commuter (earlier names: Metro South Commuter, Orange Line, Metrotren, Commuter Express or Commex)

References

Public transportation in the Philippines
Rail transportation in Metro Manila
Rail transportation in the Philippines
Transportation in Luzon
Nikola Tesla Museum. The Nikola Tesla Museum () is a science museum located in Belgrade, Serbia. It is dedicated to honoring and displaying the life and work of Nikola Tesla as well as the final resting place for Tesla. It holds more than 160,000 original documents, over 2,000 books and journals, over 1,200 historical technical exhibits, over 1,500 photographs and photo plates of original, technical objects, instruments and apparatus, and over 1,000 plans and drawings. Very little is on display in the small ground floor exhibition space.

The Nikola Tesla Archive was inscribed on UNESCO's Memory of the World Programme Register in 2003 due to its critical role regarding history of electrification of the world and future technological advancements in this area.

History
The Nikola Tesla Museum is housed in a residential villa built in 1927 according to the designs of Dragiša Brašovan, a distinguished Serbian architect. The building was used for various purposes until December 5, 1952, when the Nikola Tesla Museum was founded in accordance with the decision of the Government of the Federal People's Republic of Yugoslavia. Certain items for the museum were shipped from New York City to Belgrade, Yugoslavia, on September 7, 1951, as a result of efforts by Sava Kosanović, Tesla's nephew and closest relative and his attorney Philip Wittenberg.

Exhibitions
The permanent exhibition was arranged in 1955. It consists of four rooms on the ground floor. From time to time there have been some modifications, but for many years the basic concept has remained the same. Its first part is primarily a memorial exhibition, while the second part is an interactive one, with 3D computer generated models of Tesla's inventions. From time to time, the museum organizes thematic exhibitions of documents, photographs and other material in order to display some periods from Tesla's inventive life.

Reconstruction
Reconstruction of the Nikola Tesla Museum started on November 3, 2006. The first phase of the project was scheduled to have been complete by the end of 2006. The garden on the roof of the museum was designed to be enclosed by glass windows, which would turn the roof into a computer room. This reconstruction is now complete, and the museum is available to visit.

Gallery

See also
Nikola Tesla Memorial Center, museum in Smiljan, Croatia
Nikola Tesla
Wardenclyffe tower
Wireless energy transmission
Tesla Science Center at Wardenclyffe
Genčić Family House
List of museums in Serbia

References

External links

 

Museum
Science museums
Museums in Belgrade
Museums established in 1952
1952 establishments in Serbia
Vračar
Innovations in Systems and Software Engineering. Innovations in Systems and Software Engineering: A NASA Journal is a peer-reviewed scientific journal of computer science covering systems and software engineering, including formal methods. It is published by Springer Science+Business Media on behalf of NASA. The editors-in-chief are Michael Hinchey (University of Limerick) and Shawn Bohner (Rose-Hulman Institute of Technology).

Abstracting and indexing
The journal is abstracted and indexed in:

References

External links
 

Academic journals established in 2005
Computer science journals
Systems engineering
Software engineering publications
Springer Science+Business Media academic journals
Formal methods publications
Quarterly journals
NASA mass media
Hybrid open access journals
Laurens van den Acker. Laurens van den Acker (born 5 September 1965, Deurne, North Brabant) is a Dutch automobile designer. He is the Chief Design Officer of the Renault Group.

Biography

Van den Acker studied at the Delft University of Technology, where he obtained a Master of Engineering at the Faculty of Industrial Design Engineering.

Career
He began his career in 1990 as a designer at Design System srl in Turin, Italy, that worked on the interior of the Bugatti EB110 supercar.

In 1993, he moved to Audi as an Exterior Designer in the Ingolstadt Design Center in Germany, where he met J Mays. In 1996 he followed J Mays to SHR Perceptual Management in Newbury Park as a Senior Designer. Van den Acker joined Ford Motor Company, where J Mays had become vice-president of Design, in 1998. Late, he became chief designer of the Brand Imaging Group in Irvine, California. He was involved in designing Ford concepts such as the 427 (with Joe Baker), 021C (with Marc Newson), Concept U, and Ma; in 2003, he eventually became chief designer on Ford Escape in the Dearborn Design Center, Michigan (USA). In 2005, he became chief designer of Strategic Design of Ford.

In May 2006 he replaced Moray Callum as global head of design for Mazda. He was responsible for the Mazda concepts Nagare (Los Angeles 2006), Ryuga (Detroit 2007), and Hakaze (Geneva 2007).

He resigned from Mazda April 2009, and joined Renault on May 15, 2009. In September 2009, he became Senior Vice President of Renault Corporate Design to replace Patrick le Quément. He contributed to the design of Renault Twizy, as well as fourth-generation Renault Clio and the 2013 Renault Captur.

Van den Acker also worked for Volvo, but for very short time.

Design work
 Bugatti vehicles:
 Bugatti Chiron
 Bugatti EB110
 Ford vehicles:
 Ford 24/7 (concept)
 Ford 427 by Joe Baker
 Ford Escape
 Ford GloCar (concept)
 Ford Model U (concept)
 Mercury vehicles:
 Mercury Mariner
 Mazda vehicles:
 Mazda 3 (2009)
 Mazda Hakaze (concept)
 Mazda Kiyora (concept)
 Mazda Nagare (concept)
 Mazda Ryuga (concept)
 Mazda Furai (concept) 
 Renault vehicles:
 Renault Arkana (2019)
 Renault Captur (concept)
 Renault Clio IV (2012)
 Renault DeZir (concept)
 Renault Espace V
 Renault Talisman
 Renault Twizy

Others
Richard Blackburn wrote in an article in Sydney Morning Herald that van den Acker 'still has some of the sketches' of cars 'he penned as a five-year-old, with smoke bellowing from exhausts and cartoon-like lines depicting the wind. He keeps them because they "capture the emotion of motion". In layman's terms that means creating forms and surfaces that look as if they're moving when they're standing still.'

References

External links
Drive.com article
Interview with Laurens van den Acker on design and emotion

1965 births
Living people
Dutch automobile designers
Audi people
Ford designers
Renault people
Volkswagen Group designers
Delft University of Technology alumni
People from Deurne, Netherlands
Share (command). In computing, share is a command for DOS that allows software to perform file locks. Locking files became necessary when MS-DOS began allowing files to be accessed simultaneously by multiple programs, either through multitasking or networking.

Implementations
On MS-DOS, the command is available in  versions 3 and later. The command is also available in FreeDOS, PTS-DOS, and SISNE plus. The FreeDOS version was developed by Ron Cemer and is licensed under the GPL. DR DOS 6.0 and Datalight ROM-DOS include an implementation of the  command.

Windows XP and later versions include 16-bit commands (nonnative) for the MS-DOS subsystem that are included to maintain MS-DOS compatibility. The share MS-DOS subsystem command performs functions that are now inherent to Microsoft Windows. It is available to preserve compatibility with existing files, but has no effect at the command line because the functionality is automatic. The 16-bit MS-DOS subsystem commands are not available on 64-bit editions of Windows.

Design
There were five locking modes:

Deny None
Deny Read
Deny Write
Deny All
Compatibility (designed for backward compatibility with existing MS-DOS programs)

The program runs as a terminate-and-stay-resident program and is typically loaded at boot-up.

Syntax
 share [/F:space] [/L:locks]

/F:space Allocates file space (in bytes) for file-sharing information.
/L:locks Sets the number of files that can be locked at one time.

See also
List of DOS commands

References

Further reading

External DOS commands
Aluminoxane. Aluminoxanes are organoaluminium compounds with the formula [RAlO]m[R2AlO0.5]n[R2AlOH]o, where R = organic substituent.  The following structural rules apply: Al is tetrahedral and O is three-coordinate.

Methylaluminoxane is widely used in the polymerization of alkenes. These compounds are typically obtained by the partial hydrolysis of trialkylaluminium compounds. Aluminoxanes serve as activators for catalytic olefin polymerisation, such as the Ziegler–Natta catalyst. They also serve a function as scavenger for impurities (e.g. water) in reactions that are sensitive to these impurities. Aluminoxane, appearing as white solids, are encountered as solutions.

References

Aluminium compounds
Organometallic compounds
Coordination complexes
Transformer effect. The transformer effect, or mutual induction, is one of the processes by which an electromotive force (e.m.f.) is induced. In a transformer, a changing electric current in a primary coil creates a changing magnetic field that induces a current in a secondary coil.

This process is one of two ways of inducing an electromotive force, the other being the relative motion of a current-carrying conductor within a magnetic field. This method relies on a conductor and magnetic field moving relative to one another, leading to a rate of change of flux, dΦ/dt. This can be explained further by Faraday's law of electromagnetic induction and refined by Lenz's Law.

Electrodynamics
Ethernet over SDH. Ethernet Over SDH (EoS or EoSDH) or Ethernet over SONET refers to a set of protocols which allow Ethernet traffic to be carried over synchronous digital hierarchy networks in an efficient and flexible way. The same functions are available using SONET.

Ethernet frames which are to be sent on the SDH link are sent through an "encapsulation" block (typically Generic Framing Procedure or GFP) to create a synchronous stream of data from the asynchronous Ethernet packets. The synchronous stream of encapsulated data is then passed through a mapping block which typically uses virtual concatenation (VCAT) to route the stream of bits over one or more SDH paths. As this is byte interleaved, it provides a better level of security compared to other mechanisms for Ethernet transport.

After traversing SDH paths, the traffic is processed in the reverse fashion: virtual concatenation path processing to recreate the original synchronous byte stream, followed by decapsulation to converting the synchronous data stream to an asynchronous stream of Ethernet frames.

The SDH paths may be VC-4, VC-3, VC-12 or VC-11 paths. Up to 64 VC-11 or VC-12 paths can be concatenated together to form a single larger virtually concatenated group. Up to 256 VC-3 or VC-4 paths can be concatenated together to form a single larger virtually concatenated group. The paths within a group are referred to as "members". A virtually concatenated group is typically referred to by the notation -v, where  is VC-4, VC-3, VC-12 or VC-11 and X is the number of members in the group.

A 10-Mbit/s Ethernet link is often transported over a VC-12-5v which allows the full bandwidth to be carried for all packet sizes.
A 100-Mbit/s Ethernet link is often transported over a VC-3-2v which allows the full bandwidth to be carried when smaller packets are used (< 250 bytes) and Ethernet flow control restricts the rate of traffic for larger packets. But does only give ca. 97 Mbit/s, not full 100 Mb.
A 1000-Mbit/s (or 1 GigE) Ethernet link is often transported over a VC-3-21v or a VC-4-7v which allows the full bandwidth to be carried for all packets.

EoS also drops the "idle" packets of the Ethernet frame before encapsulating the Ethernet frame to GFP, which is recreated at the other end during decapsulation process. Hence this provide a better throughput compared to native Ethernet transport.

An additional protocol, called link capacity adjustment scheme (LCAS), allows the two endpoints of the SDH paths to negotiate which paths are working and can carry traffic versus which paths should not be used to carry traffic.

See also 
 Packet over SONET

SDH
Synchronous optical networking
Network protocols
Mercedes-Benz Econic. The Mercedes-Benz Econic is a low-entry truck introduced by Mercedes-Benz in 1998. It is available in weights of 18 t and 26 t and is powered by a six-cylinder inline engine with turbo and intercooler. It is normally used for waste collection, fire and emergency purposes and airport ground services. In 2014, it received a facelift which included new headlamps and a revised front grille.

References

External links
 
 The new Mercedes-Benz Econic - official website

Econic
Waste collection vehicles
Fire service vehicles
Khong Khola River. Khong Khola River is a small perennial river near the town of Darjeeling, in the Indian state of West Bengal.

Water supply projects
During the dry season when the water supply of Darjeeling from Senchal Lake becomes short, water is often pumped from Khong Khola to the town. In 2002, the Darjeeling Municipality submitted proposals for four drinking water projects to the state government. These proposals involve construction of water reservoirs, as follows: A Sindhap ground reservoir at an estimated cost of Rs 6.6 million; a Rungdung Khola water project at an estimated cost of Rs 46 million; a Khong Khola water project at estimated cost of Rs 2 million, and a Senchal Lake water reservoir at an estimated cost of Rs 14 million.

Drinking-water problem in Darjeeling
Natural springs in the Senchal Range provide most of Darjeeling's water supply. Water collected is routed through stone conduits to two lakes that were constructed in 1910 and 1932, from where it is piped to the town after purification at the Jorebungalow filtration plant.

However, there is a steadily widening gap between water supply and demand; just over 50% of the town's households are connected to the municipal water supply system. Various efforts made to augment the water supply, including the construction of a third storage reservoir in 1984, have failed to yield desired results.

Notes

Darjeeling
Rivers of West Bengal
William Francis Deegan. William Francis Deegan (December 28, 1882 – April 3, 1932) was an architect, organizer of the American Legion, major in the Army Corps of Engineers, and Democratic political leader in New York City.

Biography
He was born on December 28, 1882, to Irish immigrants. He studied architecture at Cooper Union and at age 35 served in World War I as a staff officer in the 105th Field Artillery.

Deegan later joined the United States Army Corps of Engineers as a major, where he supervised the construction of military bases in the New York area under the command of General George W. Goethals.  After the war he helped organize the American Legion in 1919, advancing to State Commander in 1921. In 1922 he was considered a strong candidate to become national commander of the Legion at their convention in New Orleans, but was defeated due to his strong advocacy for admitting black veterans into the organization. Advocacy for the rights of black people was a strong theme throughout Deegan's career, including during his position as Tenement House Commissioner.

Deegan worked as an architect at a number of distinguished firms, including McKim, Mead & White; Post, Magnicke and Franke; and Starrett and van Vleck. Later in life he held a number of political positions, most of them in the Bronx. Deegan was President of the Bronx Chamber of Commerce until the chamber grew critical of Mayor Jimmy Walker, at which point he resigned. In 1928, Mayor Walker appointed him Tenement House Commissioner of New York City—a post he held for the rest of his life—and in 1930, chairman of the Mayor's Committee on Receptions to Distinguished Guests, or "official greeter", a job in which he was preceded by his friend Rodman Wanamaker and eventually succeeded by Grover Whalen.

Major Deegan died of complications following surgery for an appendectomy on April 3, 1932.

Legacy
At the time of his death, a new road was being built from the Triborough Bridge to the Grand Concourse.  This was renamed and expanded in 1956 into the Major Deegan Expressway section of I-87 in the Bronx, which retains his name.

References

1882 births
1932 deaths
American people of Irish descent
People from the Bronx
Cooper Union alumni
Chairpersons of the Mayor's Committee on Receptions to Distinguished Guests
Commissioners in New York City
Greeters