omniomni/omni-engineering huggingface dataset:
Scott Hull (mastering engineer). Scott E. Hull (born January 28, 1962) is a mastering engineer based in New York City, and the owner of Masterdisk.

Hull began his career as an intern at Masterdisk in 1983. He became Bob Ludwig's assistant in 1984, and was promoted to chief engineer in 1994. In this first part of his career at Masterdisk Hull mastered albums for the following artists: Donald Fagen, Miles Davis, Bruce Springsteen, Spacehog, Congreso, Ani DiFranco, Lemonheads, Garbage, Shawn Mullins and multiple titles on the Luaka Bop label.

Hull remained chief engineer until 1999 when he left Masterdisk and moved to Classic Sound. While at Classic Sound Hull mastered the Grammy winning Steely Dan album Two Against Nature and the John Mayer album Room for Squares. Hull left Classic Sound when he was approached by The Hit Factory, where he stayed until they shut down in early 2005. While at The Hit Factory Hull mastered albums for Amy Grant, Skillet, Edie Brickell, and John Zorn.

When the Hit Factory closed, Hull became chief engineer at Jigsaw Sound. After Jigsaw, Hull opened his own company, Scott Hull Mastering. In an interview with the Rain Computers website, Hull explained his decision to start his own company:

This is really a continuation of all of the things I have been doing with music for the past 25 years. It was finally time to open my own shop and set up a mastering room that catered to the music business as it exists today. Cost conscious Major labels and the growing trend of independently produced mass-market music - that's where the next generation of music will emerge.

Hull returned to Masterdisk in 2008, when he purchased the business from then-CEO, Doug Levine. About the acquisition of the company Hull said, "I felt that Masterdisk was a flagship mastering studio that could be rejuvenated to be as profound as it once had been."  Hull also said that he planned "an enthusiastic re-dedication to the 'excellent customer service, spread around multiple rooms' that characterized Masterdisk in the 1970s and 80s."

Other albums Scott Hull has mastered:

Uncle Tupelo Anodyne (1993)
Congreso Por amor al viento (1995)
Herbie Hancock The New Standard (1996)
Os Mutantes Everything Is Possible: The Best of Os Mutantes (1999)
Derek Bailey Pieces for Guitar (2002)
Lazlo Bane Guilty Pleasures (2007)
Sharon Jones & The Dap-Kings 100 Days, 100 Nights (2007)
Panic! at the Disco Pretty. Odd. (2008)
Loudon Wainwright III High Wide & Handsome: The Charlie Poole Project (2009)
Lou Reed Metal Machine Music (2009 reissue)
Hawthorne Heights Skeletons (2010)
John Zorn (The Moonchild Trio) Ipsissimus (2010)
Sting Symphonicities (2010)
Laurie Anderson Homeland (2010)
Chiodos Illuminaudio (2010)
John Zorn In Search of the Miraculous (2010)
The Book of Mormon: Original Broadway Cast Recording (2011)
Loudon Wainwright III Older Than My Old Man Now (2012)

References

External links
 Masterdisk website

American audio engineers
1962 births
Living people
Mastering engineers
Sikorsky Firefly. The Sikorsky Firefly is an all-electric helicopter built for research purposes by Sikorsky Aircraft. It has been called the world's "first all-electric helicopter". The Firefly is a modified Sikorsky S-300C helicopter with its engine replaced by an electric motor and two lithium-ion battery packs. The helicopter would hold only the pilot and no passengers. Sikorsky reported an operating time of 12 to 15 minutes and a top speed of .

It was expected that the helicopter would make its first flight in late 2010 or early 2011. For undisclosed reasons, the helicopter was never flown and the project is now defunct.

History 
Sikorsky announced the aircraft at the Farnborough International Air Show in the United Kingdom on July 19, 2010, and displayed it for the first time at the Experimental Aircraft Association's AirVenture 2010 convention in Oshkosh, Wisconsin, on July 26. Upon the Firefly's announcement, Sikorsky revealed that they had been working on the project for over two years. The cost of the project was never disclosed.

Development
The Firefly was created by replacing the engine of the S-300C light helicopter, which began production in 1964 as the Hughes 300. The S-300C's Lycoming , 5.9-liter, 4-cylinder gasoline engine was replaced with an electric motor, a new motor mount, and two battery packs located on each side of the pilot. The rotor control, transmission and other systems were left essentially unchanged. The project was inspired by observing electric drag cars.

Sikorsky Innovations director Chris Van Buiten stated that the development of the Firefly was intended to demonstrate the technology required for vertical electric flight.

Electric motor and battery
The high-efficiency electric motor is powered by two 45Ah lithium-ion battery packs, each of which weighs . The battery packs, manufactured by Gaia Power Technologies, have a total of 300 cells and produce about 370 volts. The electric motor is expected to fly with much less noise, emissions and vibration and require shorter maintenance periods over the life of the aircraft. The electric motor and controller system weighs . Empty weight is close to the  MTOW. The batteries, motor and electronic components are air cooled, and the batteries have 15 minute endurance.

If the aircraft completely loses power, it can auto-rotate for a safe landing. The pilot would have plenty of warning if the batteries ran down during flight.

Eagle Aviation Technologies, LLC, installed the new permanent-magnet electric motor and digital controller from U.S. Hybrid, and the batteries.

See also

 AgustaWestland Project Zero
 Hughes TH-55 Osage
 Solution F/Chretien Helicopter

References

External links

Firefly™ Technology Demonstrator Firefly Sikorsky corporate page (Internet Archive)
Sikorsky Firefly: An Electric Helicopter AvWeb report from Oshkosh EAA AirVenture 2010. Interview with Sikorsky Innovations project manager Jonathan Hartman.

2010s United States helicopters
Firefly
Electric helicopters
2010s United States experimental aircraft
Single-rotor helicopters
Aircraft with skid landing gear
Unflown aircraft
Profire Energy. Profire Energy, Inc. is an oilfield technology company, specializing in the design of burner-management systems (BMS) and other combustion-management technologies.

It serves the upstream and midstream portions of the oil/gas industry, providing systems that monitor and manage the burners used in the industry's combustion vessels (e.g. tanks, dehydrators, separators,  etc.).

Profire Energy has offices in Lindon, Utah; Victoria, Texas; Midland-Odessa, Texas; Homer, Pennsylvania; Greeley, Colorado; Millersburg, Ohio; and Acheson, Alberta, Canada.

History 
Profire Energy was established in Alberta, Canada in March 2002 as a private company (Profire Combustion). Brenton W. Hatch (now CEO), Harold E. Albert (now COO) co-founded the company to service oil/gas producers, but soon created a control panel for the management of burners, a system called the Profire 1100.

After a few years of continued development, the company made the decision to go public (in 2008) under the name Profire Energy, Inc. (OTCBB: PFIE). They have since developed additional (and more advanced) products, opened multiple offices throughout the US, and continued development of their product line for domestic and international use.

In 2025, CECO Environmental completed the purchase of Profire for approximately $122.7 million.

Markets 
Profire Energy predominately serves the North American upstream and midstream oil/gas industry, but announced a Brazilian distribution channel in early 2012, as well as an Australian distribution channel in early 2014.

References

External links 

2002 establishments in Alberta
Companies based in Alberta
Companies listed on the Nasdaq
Oil companies of Canada
Oilfield services companies
2025 mergers and acquisitions
Jet (video game). Jet is a combat flight simulator video game originally published in 1985 by Sublogic. The game was released in 1985 for MS-DOS and the Commodore 64, 1986 for the Apple II, 1988 for the Atari ST and Amiga, and 1989 for the Macintosh and NEC PC-9801.

An updated version called Jet 2.0 was released for MS-DOS in 1987.

Gameplay
Jet is easier to fly than Flight Simulator II, and is compatible with its scenery disks. The player may choose either an F-16 Fighting Falcon for land missions or an F/A-18 Hornet for missions starting at sea from an aircraft carrier. The player can also practice flying and aerobatics in "free flight" mode, dogfight against Soviet MiGs, launch strikes against land or sea-based targets, or watch a demo. For either combat mode, the player can select which missiles and bombs the plane will have.

Most of the indicators on a real jet fighter are present in Jet: altimeter, heading, frame loading, gear status, brake status, fuel level, radar, attitude, and range. The player can turn a few of these on and off. The controls consist of either the joystick or numeric keypad for steering and other keys to handle the chosen optional indicators, landing gear, weapons, and an eject button. Different perspectives can be chosen - a view from the control tower instead of the jet's cockpit.

Reception
Jet was Sublogic's second best-selling Commodore 64 game as of late 1987. Describing it as "an upscale, friendlier version of Flight Simulator, Compute!'s Gazette in 1986 said that the Commodore 64 version was "a great computer game doing what it does best—and letting you have some fun". Compute! in 1987 favorably reviewed the Apple II version of Jet and its excellent graphics, but criticized the slow performance, reporting that it was "painfully slow" at updating the display.

Computer Gaming World called Jet "more of a 'game'" than F/A-18 Interceptor, which the magazine described as "a 'toy' ... you play a game, you play with a toy". The reviewer recommended both. In a 1994 survey of wargames the magazine gave the title one-plus stars out of five, describing the combat "mediocre".

See also
 Microsoft Flight Simulator
 Falcon 4.0

References

External links
 
 

1985 video games
Amiga games
Apple II games
Atari ST games
Classic Mac OS games
Combat flight simulators
Commodore 64 games
DOS games
NEC PC-9801 games
Single-player video games
Sublogic games
Video games developed in the United States
Complementary ground component. A complementary ground component is a terrestrial infill system for a mobile-satellite service that uses terrestrial base stations to provide connectivity in weak signal areas, such as urban areas. According to EU Decision 626/2008/EC: 

"complementary ground components" of mobile satellite systems shall mean ground-based stations used at fixed locations, in order to improve the availability of the mobile-satellite service in geographical areas within the footprint of the system's satellite(s), where communications with one or more space stations cannot be ensured with the required quality”

Such systems use the same frequencies assigned for space usage.

See also 
 Repeater

References 

Telecommunications engineering
Acorn tube. An acorn tube, or acorn valve, refers to any member of a family of VHF/UHF vacuum tubes starting just before World War II. They were named after their resemblance to the acorn, specifically due to the glass cap at one end of the tube that looked similar to the cap on an acorn. The acorn tubes found widespread use in radios and radar systems.

High-frequency performance is limited by (1) parasitic lead inductance and capacitance and skin effect, and (2) electron transit time (the time required to travel from cathode to anode). Transit time effects are complicated, but one simple effect is the phase margin; another one is input conductance, also known as grid loading. At extremely high frequencies, electrons arriving at the grid may become out of phase with those departing towards the anode. This imbalance of charge causes the grid to exhibit a reactance that is much less than its low-frequency "open circuit" characteristic. Acorn- as well as Lighthouse tubes and Nuvistors attempt to minimize this effect by arranging cathode, grid(s) and anode as closely spaced together as possible.

The original range included about half a dozen tubes, designed to work in the VHF range. The 955 is a triode. The 954 and 956 types are sharp and remote cut-off pentodes, respectively, all with indirect 6.3 V, 150 mA heaters. Types 957, 958 and 959 are for portable equipment and have 1.25 V NiCd battery heaters. The 957 is a medium-μ signal triode, the 958 is a transmitting triode with dual, paralleled filaments for increased emission, and the 959 is a sharp cut-off pentode like the 954. The 957 and 959 draw 50 mA heater current, the 958 twice as much. In 1942, the 958A with tightened emission specifications was introduced after it turned out that 958s with excessively high emission kept working after the filament power was turned off, the filament still sufficiently heating on the anode current alone. After the introduction of the miniature 7-pin base, the 954, 955 and 956 were made available with this base as 9001, 9002 and 9003. Other acorn tubes include:
 American:
EIA: 5731
RETMA: 6F4, 6L4
 European:
British: A40, A41, AP4, AT4, HA1, ZA1, ZA2
Continental: 4671, 4672, 4674, 4675, 4676, 4695
Mullard-Philips: D1C, D2C, D1F, D2F, D3F, D11F, D12F, E1C, E1F, E2F
 Russian: 6С1Ж, 6Ж1Ж, 6К1Ж
 Japanese: UN954, UN955

Larger, higher-power types such as the 316A, 368A, 388A, and 703A triodes and the 713A and 717A pentodes were referred to as Doorknob tubes.

The introduction of the EF50 was the first serious competition for the acorn design, and replaced the acorns in many roles, especially post-war when millions of surplus EF50s were dumped on the market.

See also

 955 acorn triode

References

Vacuum tubes
Acorns
Modern Welding Company, Inc.. Modern Welding Company is the country's largest supplier of underground and aboveground steel storage tanks for flammable and combustible liquids. The company also manufactures chemical storage tanks and ASME pressure vessels, performs steel fabrication, and constructs and installs natural gas pipelines. Modern is headquartered in Owensboro, Kentucky and has ten manufacturing subsidiaries throughout the United States.

History

Modern Welding Company was founded in June 1932 in Owensboro, Kentucky in a small shop located near the Ohio River at 1st and Frederica Street where the Commonwealth of Kentucky office building is today. The company was founded by John G. Barnard (1898–1982), known as "Mr. Pete". In 1937 the company expanded with the acquisition of a plant in Madisonville, Kentucky.

References

Manufacturing companies based in Kentucky
Owensboro, Kentucky
1932 establishments in Kentucky
Manufacturing companies established in 1932
Cer-Vit. Cer-vit is a family of glass-ceramic materials that were invented by Owens Illinois in the mid-1960s. Its principle ingredients are the oxides of lithium, aluminum and silicon. It is melted to form a glass which is then heat treated to nucleate and crystallize it into a material that is more than 90% microscopic crystals. Its formulation and heat treatment can be modified to produce a variety of material properties. One form is a material that is transparent and has a near zero thermal expansion. Its transparency is because the microscopic crystals are smaller than the wave length of light and are transparent, and its low thermal expansion is because they have a spodumene structure.

Cer-Vit C 101 was used to form large mirror blanks ( in diameter) that were used in telescopes in several places, including South America, France and Australia. Owens Illinois ceased production of C101 in 1978. In addition, Cer-Vit materials were used to make stove tops, cook ware and aviation applications, but never commercialized.

Today, glass-ceramic products such as transparent mirror blanks and stove tops, and cookware are manufactured and in daily use. These products include trade names of Zerodor, Hercuvit, and Pyroceram, most of which have low or zero thermal expansion, which allows them to be exposed to rapid temperature changes or localized heating or cooling.

Applications
At Mount Lemmon Observatory, two 1.5 meter diameter telescopes have a Cer-Vit glass mirror.  One of the telescopes discovered 2011 AG5, an asteroid which achieved 1 on the Torino Scale.

References

Bibliography
 Structure and Characterization of Lithiumaluminalsilicate Glass and Glass Ceramics derived from Spodumene Mineral. A. Nordman, Y Cheng, T.J. Bastock, Journal of Physics Condensed Matter, Volume 7, Number 16
 Glass-ceramics capture $2 million telescope-mirror contract. David H. Taeler, Ceramic Age, August 1968, Volume 84, Number 8
 Transparent Glass-Ceramics G. H. Beal, D. A. Duke, Journal of Materials Science 4(1969) 140-152

External links
Glass Types - Oldham Optical
Low thermal expansion glass ceramics - Hans Bach, Dieter Krause

Glass types
Glass-ceramics
Low-expansion glass
Glass trademarks and brands
Transparent materials
Lufthansa Cargo Flight 8460. Lufthansa Cargo Flight 8460 was an international cargo flight which crashed upon landing in Riyadh, Saudi Arabia on the 27 July 2010. Both crew members, the only people on board, were injured but survived.

Accident 
Flight 8460 was an international scheduled cargo flight from Frankfurt, Germany, to Hong Kong via Riyadh, Saudi Arabia, and Sharjah, United Arab Emirates. The flight from Frankfurt to Riyadh was uneventful, and weather conditions at Riyadh were good, with sufficient visibility.

On arrival at King Khalid International Airport in Riyadh, the plane landed heavily, bounced repeatedly, eventually breaking up and veering off the runway. Both the 39-year-old Captain and 29-year-old First Officer were able to evacuate the plane using the emergency slide, but were injured. After the crash, a fire consumed the midsection of the aircraft before it was brought under control by the airport emergency services.

Aircraft 

The aircraft involved in the accident was a McDonnell Douglas MD-11 registered as D-ALCQ, MSN 48431, line number 534. The aircraft was delivered to Alitalia in 1993 as I-DUPB and was later converted to a cargo aircraft in 2004. At the time of the accident, D-ALCQ had completed 10,073 cycles and accumulated 73,247 airframe hours. It was also equipped with three General Electric CF6-80C2D1F engines.

Investigation 
The General Authority of Civil Aviation opened an investigation into the accident. The final report found that the cause of the accident was that the airplane touched down too hard, which caused it to bounce on the runway. The crew did not recognize the bounce and reacted in a way that made the plane bounce even harder. The third and final touchdown was so hard that it caused the aft fuselage to rupture.

Before this accident, there were 29 other bounced or severe hard landings with MD-11 aircraft that caused substantial damage. A similar accident had occurred on FedEx Express Flight 80 in the previous year, where both crew members were killed in a bounced landing.

It was known that flight crews found MD-11 bounced landings difficult to detect. The final report made several recommendations to improve training, procedures and flight instruments to help crews to deal with bounced landings.

See also

 FedEx Express Flight 80 – an MD-11 that bounced and flipped on landing in 2009
 China Airlines Flight 642 – an MD-11 that landed hard and broke up in 1999
 FedEx Express Flight 14 – an MD-11 that bounced and flipped on landing in 1997
 List of accidents and incidents involving commercial aircraft

References

External links 
 Report with photographs of the accident aircraft (in Arabic)
 Final report  (Archive) – General Authority of Civil Aviation

2010 in Saudi Arabia
Accidents and incidents involving cargo aircraft
Aviation accidents and incidents in 2010
Accidents and incidents involving the McDonnell Douglas MD-11
Aviation accidents and incidents in Saudi Arabia
July 2010 events in Asia
2010 disasters in Saudi Arabia
Lufthansa accidents and incidents
Methylethyl ketone oxime. Methylethyl ketone oxime is the organic compound with the formula C2H5C(NOH)CH3.  This colourless liquid is the oxime derivative of methyl ethyl ketone.  MEKO, as it is called in the paint industry, is used to suppress "skinning" of paints: the formation of a skin on paint before it is used. It is particularly used in alkyd paints. MEKO functions by binding the drying agents, metal salts that catalyze the oxidative crosslinking of drying oils.  Once the paint is applied to a surface, MEKO evaporates, thereby allowing the drying process to proceed.  Other antiskinning agents have been used, including phenolic antioxidants (E.G butylated hydroxytoluene), but these tend to yellow the paint. This oxime is also used in some types of RTV silicones.

References

Ketoximes
Visual arts materials
Painting materials
IBM's The Great Mind Challenge. The Great Mind Challenge (TGMC) is an annual nationwide software development competition, created by the Academic Initiative of IBM. The competition currently takes place in India, Israel, China, Ireland and Switzerland. Outside of India, the effort is known as the IBM Great Minds Program.

The Academic Initiative programs include various student and university engagements designed to encourage innovation in the technology space at the university level and to enable students to become market-ready.

References

External links
 (India)

IBM
Annual events
International competitions
Pashchimanchal Campus. Pashchimanchal Campus () previously known as Western Regional Campus (WRC) is the third and one of the five constituent engineering campuses under Institute of Engineering of Tribhuvan University. Paschimanchal campus is specialized for geomatics engineering in the context of Nepal and is the only TU campus to have this program at the bachelor's and master's level.

Located in Pokhara, the capital of Gandaki Province the campus was established in 1981 A.D. to develop middle level manpower in the field in different fields engineering which upgraded its programs to bachelor and master level along the course of time.

Location 
Pashchimanchal Campus is in Lamachaur, Pokhara the capital city of Gandaki Province.

History 
Established in 1981 AD, Pashchimanchal Campus became operational in 1987 AD under the assistance of World Bank and ILO/UNDP. While diploma courses ran till 2011, it was discontinued as TU phased out such courses and currently only bachelor and masters programs are operational.

Course offered

Bachelor level 

 Bachelor in Civil engineering
 Bachelor in Computer engineering
 Bachelor in Electronics, Communication and Information engineering
 Bachelor in Geomatics engineering
 Bachelor in Electrical engineering
 Bachelor in Mechanical engineering
 Bachelor In Automobile engineering

Masters level 

 Masters in Infrastructure engineering
 Master in Geospatial engineering
 Masters in Rock and Tunnel engineering
 Masters in Communication and Knowledge engineering
 Masters in Distributed Generation engineering

See also 

 Pulchowk Campus
 Thapathali Campus
 Gaushala Engineering Campus

References

External links 

 Institute of Engineering
 Thapathali Campus, IOE
 Pulchok Campus, IOE
 Pashchimanchal Campus, IOE
 Purwanchal Campus, IOE

Engineering colleges in Nepal
Tribhuvan University
1981 establishments in Nepal
Constituent campuses of Tribhuvan University
Surveying of Nepal