omniomni/omni-engineering huggingface dataset:
Mark Benson (engineer). Mark Benson (born Mark Müller; Jun 19, 1888 – May 1965) was a Bohemian German engineer, best known as the inventor of a supercritical boiler.

Benson was born in the Sudetenland, and his original name  was Müller (he changed his name during World War I to hide his German origin). He emigrated to the United States, then returned to Europe to work for the English Electric Company in Rugby. For English Electric he designed a relatively small steam generator (3 tons/hr), but with—for the time—very high pressure (supercritical) and without any drum. In 1922 Benson was granted a patent for this type of boiler.

In 1924, Siemens acquired the right to use Benson's patent, and in 1926–27 built the first large Benson boiler in Berlin-Gartenfeld. Siemens improved the technology and developed it as an internationally acknowledged standard for large steam generators. Since 1933 (until today) Siemens do not manufacture their own Benson boilers any more, but instead license the technology to others.

After his patent, Mark Benson did not make any further public appearances, but Siemens continued to use Benson as a registered trademark for this successful type of boiler, so the name is renowned worldwide in boiler engineering, although relatively little is known about the inventor behind it.

References

Date of death missing
British mechanical engineers
German Bohemian people
People associated with electricity
Boilers
Emigrants from Austria-Hungary to the United States
1888 births
ScicomP. The IBM HPC Systems Scientific Computing User Group (ScicomP) was a non-profit user-led group for scientific and technical users of IBM high-performance computing (HPC) systems. It was part of the SPXXL organization. It held yearly meetings with presentations to allow users share expertise and collaborate on the development of efficient and scalable scientific applications. Though not affiliated with the IBM Corporation, the group's meetings provide an opportunity to give feedback to IBM that would influence the design of future systems.

In 2014, IBM's x86-based server business was transferred to Lenovo, and SPXXL dropped the vendor requirement, opening up membership to all HPC vendors. Active vendors included IBM, Lenovo, Intel, and Mellanox as of 2016. As of 2016, Lenovo still engaged with the user group. It later became HPCXXL.

History 
ScicomP was formed in October 1999 when 285 researchers and engineers met at IBM's Advanced Computing Technology Center (ACTC) at IBM Research in Yorktown Heights, NY.
The meeting was a user-oriented and planned 3-day workshop to share information on scientific computing techniques for the users of IBM SP supercomputers. The meeting was created on the recommendations of the attendees of the IBM SP Scientific Applications Development and Optimization Workshop held in March 1999 at the San Diego Supercomputer Center. The objective of that meeting was to help computational scientists and engineers develop applications that achieve maximum performance and scalability on the IBM SP systems.

ScicomP held annual and semi-annual meetings that bring together scientific domain experts, computational scientists, systems engineers, and IBM technical specialists. The domain encompassed all IBM HPC Systems, including Power, Blue Gene, Cell, hybrid (e.g. the Los Alamos RoadRunner system), and blade architectures. The meetings alternated between supercomputing sites in North America and Europe.

References

External links 
 ScicomP Home Page
 IBM Advanced Computing Technology Center

IBM user groups
User groups
Jacobs Wind. Jacobs Wind Electric Co. Inc. is a renewable energy company currently headquartered in the Carlson Center, Minnetonka, United States. The company was founded by Marcellus and Joseph Jacobs after their wind electric system, installed on their family's Montana Ranch in 1922, garnered local interest, leading to its expansion.

Marcellus & Joe relocated the company to Minneapolis in 1931 to commence the production of enhanced wind/engine distributed energy systems, which were distributed in the U.S., Canada, Mexico, and beyond North America. One of Jacobs' early machines was transported to Antarctica by Richard Evelyn Byrd and installed at Byrd's 'Little America' in 1933, operating until 1955.

In the 1980s, Jacobs Wind Electric Co. collaborated with Control Data to develop a new series of wind energy systems capable of generating 10-20 kW of electricity. Over 1,500 of these larger systems were manufactured between 1980 and 1985, with many integrated into the grid. Numerous units were deployed in pioneering wind farms in Hawaii and California.

Jacobs wind systems were also connected to Rural Electric Cooperative (REC) grids in Minnesota from 1981 onwards. Many of these systems remain operational, contributing renewable wind power for sale to REC grids (AG-WATTS).

References

Robert Righter, Wind Energy in America. Norman, Okla. : University of Oklahoma Press, April 1996. 361pp.

External links
US Patent 4228361 - Wind electric plant with improved alternator field excitation - details 1 of at least 3 patents
Jacobs Wind Electric Company, Inc
Wind Turbine Industries
greentechhistory.com - SERI Archive film, interview
Wind-Works - Photos, details many Jacobs machines

Wind turbine manufacturers
Renewable energy companies of the United States
Companies based in Minnesota
Brunel (disambiguation). 
Isambard Kingdom Brunel (1806–1859) was an English mechanical and civil engineer.

Brunel may also refer to:

People
 Brunel (surname), a surname (and a list of people with the name)
 Brunel Fucien, Haitian footballer
 Marc Isambard Brunel, French-British engineer

Places
 Brunel Bridge (disambiguation)
 Brunel College, a predecessor to City of Bristol College
 Brunel Manor, mansion near Torquay, Devon, England
 Brunel Museum, London
 Brunel University London, England

Others
 Brunel Award, an international award for good railway design
 Brunel FM, a radio station in Swindon, England
 NR Brunel, the standard typeface for signing at Network Rail managed stations

See also
 Team Brunel, a Volvo Ocean 65 yacht
 Brunel Sunergy, a yacht
 Brunell
Doll (locomotive). Doll is a  gauge  steam locomotive based at the Leighton Buzzard Narrow Gauge Railway in Bedfordshire.

History

Industry
Doll was built by Andrew Barclay Sons & Co. in 1919 (works number 1641), and was one of three identical engines built for Hickmanas at Sydenham ironstone quarries, near Banbury in Oxfordshire. The quarries were closed in 1925 following the takeover by Stewarts & Lloyds Minerals in April 1925, and the three engines (named after Hickmans daughters) were transferred to Bilston steelworks, near Wolverhampton. The other two engines were Winifred (AB1424/1915) and Gertrude (AB1578/1918). Gertrude and Doll worked at Bilston until they were withdrawn from service in 1959, but Winifred seems to have been scrapped before 1939.

Preservation
In 1960, after some negotiations through the avid steam preservationist, Max Sinclair, Doll was moved to the Burton Green & District Light Railway near Kenilworth in Warwickshire, where she was returned to steam in 1962. By 1965, the site at Burton Green was for sale, and the railway was closed. In 1966, Doll was sold to Alan Bloom and she was moved to run at Bressingham Steam and Gardens museum. However, the Nursery Railway at Bressingham was laid to the Penrhyn Quarry Railway gauge of   and Doll is  gauge with a long fixed wheelbase and she was thus unsuitable for the line. The locomotive was sold to Henry Williams, who in turn sold her to the Leighton Buzzard Light Railway in 1969.

At some point, Doll was temporarily withdrawn from service at the Leighton Buzzard Narrow Gauge Railway, at which point she received a new all-welded boiler from Bennett Boiler and a full bottom end overhaul at Alan Keef Ltd. The valve gear was fitted with new eccentrics and repinned and bushed. It appears that at some point in the locomotive's past the wear had been compensated for by sawing part of the lap from the slide valves and filling in notches in the reversing quadrant near mid-gear.  After repair the engine returned to LBNGR and was in regular use from 2004 until the boiler tubes wore out. Doll returned to service in Summer 2017 after another overhaul. In 2019 it was joined at Leighton Buzzard by its sister locomotive, Gertrude.

Design
Doll has Stephenson valve gear and outside frames. The design originated from a requirement for the War Department for a series of similar 0-6-0 locomotives, of which a total of only 16 were built.

References

Preserved narrow gauge steam locomotives of Great Britain
Andrew Barclay locomotives
0-6-0T locomotives
Individual locomotives of Great Britain
2 ft gauge locomotives
Industrial locomotives of Great Britain
Narrow gauge locomotives of the United Kingdom
UMA. UMA may refer to:

Science and technology
 Unified memory architecture, a synonym of "integrated graphics", in computer graphics processing units
 Unlicensed Mobile Access, a protocol that extends mobile voice, data and multimedia over IP networks
 UMa, abbreviation for Ursa Major, a constellation in the northern sky
 Uniform memory access, a shared memory architecture in parallel computers
 Upper memory area, in DOS memory management
 User-Managed Access, an access management protocol standard

Organisations
 Arab Maghreb Union (Union du Maghreb Arabe), a political and economic union
 Argentine Mathematical Union (Spanish: )
 Ukrainian Museum-Archives, a museum in Cleveland, Ohio, U.S.
 UMA Engineering Ltd., now AECOM
 Umeå School of Architecture, Sweden
 Universal Music Australia, a music corporation
 University of Madeira (UMa)
 University of Mohaghegh Ardabili, Iran
 University of Maine at Augusta, United States
 University of Málaga, Spain
 University of Mannheim, Germany

Other uses
 Unidentified Mysterious Animal, another term for cryptid
 Unified managed account, a type of investment account
 Urban Music Awards, a music awards ceremony

See also
 Uma (disambiguation)
UAV (disambiguation). A UAV is an unmanned aerial vehicle, commonly known as a drone.

UAV may also refer to:

Drones
 UAV Cypher or Sikorsky Cypher, a type of unmanned aerial vehicle developed by Sikorsky Aircraft
 UAV Outback Challenge or UAV Challenge - Outback Rescue, an annual competition for the development of unmanned aerial vehicles
 UAV Sci-Tech UAV, Chinese UCAVs developed by Beijing UAV Sci-Tech Co., Ltd
 Unmanned combat aerial vehicle (UCAV), also known as a combat drone or simply a drone
 Vrabac Mini UAV, a mini drone intended for day/night reconnaissance and surveillance at shorter distances, as well as for target finding and designating

Organizations
 UAV Corporation or UAV Entertainment
 Ukrainian American Veterans
 University of Antelope Valley
Spaceship. Spaceship may refer to:

Spaceflight 
 Space vehicle, the combination of launch vehicle and spacecraft
 Spacecraft, a craft, vehicle, vessel or machine designed for spaceflight
 Starship, a spacecraft built for interstellar flight

Computing 
 Spaceship (cellular automaton), a pattern that reappears after a certain number of generations in the same orientation but in a different position
 Spaceship operator, a comparison primitive in several programming languages

Music

Songs 
 "Spaceship" (Kanye West song), 2004
 "Spaceship" (Puddle of Mudd song), 2009
 "Spaceship" (Tinchy Stryder and Dappy song), 2011
 "Spaceship" (Anhayla song), 2015
 "Spaceship", a song by The Vines from the 2006 album Vision Valley
 "Spaceship", a song by Benny Benassi from the 2011 album Electroman
 "Spaceship", a song by Daughtry from the 2011 album Break the Spell
 "Spaceship", a 2000 song by Angie Aparo

Other uses 
 The Creature Wasn't Nice, or Spaceship, a 1983 American comedy film
 "Spaceship", the third scene of the fourth act of the 1976 opera Einstein on the Beach by Philip Glass

See also 

 Rocketship (disambiguation)
 Starship (disambiguation)
 List of fictional spacecraft
 
 
 
 
 
 Ship (disambiguation)
 Space (disambiguation)
ARM Durango. ARM Durango (PO-151) is the first of four s in the Mexican Navy. Like other ships of this class, it was designed and built in Mexican dockyards. The ship is armed with a main  gun turret and a helicopter landing pad. The vessel is primarily used for interdiction of drug smuggling. Launched and commissioned on 11 September 2000, Durango is currently in service.

Description
The Durango-class design is based on the s but with a different superstructure. They have a standard displacement of   and  at full load. The vessels measure  long with a beam of  and a draft of . The patrol vessels are propelled by two shafts powered by two Caterpillar 3616 V16 diesel engines rated at . They have a maximum speed of . For electrical power, the Durango class are equipped with two 260 kilowatt generators and one 190 kW generator.

The patrol vessels are armed with a single Bofors /70 caliber gun Mk 3 mounted forward capable of firing 220 rounds/minute to a range of . The ships mount an Alenia 2 combat data system and Saab EOS 450 optronic director for fire control. They are equipped with air and surface search radar. The Durango class has a complement of 74 including 10 officers with the capability to transport 55 additional personnel. Vessels of the class carry an  interceptor craft capable of over . The vessels also mount a helicopter deck over the stern and a hangar and are capable of operating one medium helicopter.

Construction and career
The ship was laid down at ASTIMAR 1 shipyard in Tampico, Tamaulipas on 18 December 1999. The vessel was launched and commissioned into the Mexican Navy on 11 September 2000. On 6 December 2009, Durango, in a joint operation with a United States Coast Guard ship, intercepted four boats  from the Guatemalan – Mexico border in the Pacific Ocean. Twenty packages of cocaine with the weight of  were seized and nine men were detained.

In July 2017 Durango took part in the multinational naval exercise UNITAS 2017 off Peru. On 3 August, Durango responded to a distress call by the tuna fishing vessel Conquista near Puerto Chiapas after the fishing vessel's helicopter crashed into the sea. Using the embarked Panther helicopter, Durango evacuated the two downed aircrew to a nearby naval hospital.

In May 2021, two members of the crew tested positive for COVID-19. They were removed from the ship and taken to Guaymas Naval Hospital. The crew were tested after returning to base on 27 April.

Notes

Citations

Sources
 
 
 

2000 ships
Durango-class patrol vessels
Ships built in Mexico
Inertance. In fluid mechanics, inertance is a measure of the pressure difference in a fluid required to cause a unit change in the rate of change of volumetric flow-rate with time. The base SI units of inertance are  or  and the usual symbol is .

The inertance of a tube is given by:
 

where
  is the density (with dimensionality of mass per volume) of the fluid
  is the length of the tube
  is the cross-sectional area of the tube

The pressure difference is related to the change in flow-rate by the equation:
 

where
  is the pressure of the fluid
  is the volumetric flow-rate (with dimensionality of volume per time)

This equation assumes constant density, that the acceleration is uniform, and that the flow is fully developed "plug flow".  This precludes sharp bends, water hammer, and so on.

To some, it may appear counterintuitive that an increase in cross-sectional area of a tube reduces the inertance of the tube. However, for the same mass flow-rate, a lower cross-sectional area implies a higher fluid velocity and therefore a higher pressure difference to accelerate the fluid.

In respiratory physiology, inertance (of air) is measured in cm s2 L−1.

 1 cm s2 L−1 ≈ 98100 Pa s2 m−3.

Using small-signal analysis, an inertance can be represented as a fluid reactance (cf. electrical reactance) through the relation:

 

where
 
  is the frequency in Hz.

References

Fluid mechanics
Southern Seaplane Airport. Southern Seaplane Airport  is an airport and seaplane base located two nautical miles (4 km) northwest of the central business district of Belle Chasse, in Plaquemines Parish, Louisiana, United States.

Facilities and aircraft 
Southern Seaplane Airport has one runway designated 2/20 with a 3,200 by 40 ft (975 x 12 m) asphalt pavement. It also has one seaplane landing area designated 2W/20W which measures 5,000 by 100 ft (1,524 x 30 m). There are 28 aircraft based at this airport: 89% single-engine and 11% multi-engine.

See also
 List of airports in Louisiana

References

External links 
 

Airports in Louisiana
Seaplane bases in the United States
Transportation in the New Orleans metropolitan area
Transportation buildings and structures in Plaquemines Parish, Louisiana
Airports in the New Orleans metropolitan area
Meyer's law. Meyer's law is an empirical relation between the size of a hardness test indentation and the load required to leave the indentation.  The formula was devised by Eugene Meyer of the Materials Testing Laboratory at the Imperial School of Technology, Charlottenburg, Germany, circa 1908.

Equation 
It takes the form:

where

P is the pressure in megapascals
k is the resistance of the material to initial penetration
n is Meyer's index, a measure of the effect of the deformation on the hardness of the material
d is the chordal diameter (diameter of the indentation)

The index n usually lies between the values of 2, for fully strain hardened materials, and 2.5, for fully annealed materials. It is roughly related to the strain hardening coefficient in the equation for the true stress-true strain curve by adding 2. Note, however, that below approximately d =  the value of n can surpass 3. Because of this, Meyer's law is often restricted to values of d greater than 0.5 mm up to the diameter of the indenter.

The variables k and n are also dependent on the size of the indenter. Despite this, it has been found that the values can be related using the equation:

Meyer's law is often used to relate hardness values based on the fact that if the weight is quartered, the diameter of the indenter is halved. For instance, the hardness values are the same for a test load of 3000 kgf with a 10 mm indenter and for a test load of 750 kgf with a 5 mm diameter indenter. This relationship isn't perfect, but its percent error is relatively small.

A modified form of this equation was put forth by Onitsch:

See also
Meyer hardness test

References

Notes

Bibliography
.

Hardness tests
Nikolay Brusentsov. Nikolay Petrovich Brusentsov (; 7 February 1925 in Kamenskoe, Ukrainian SSR – 4 December 2014) was a computer scientist, most famous for having built a (balanced) ternary computer, Setun, together with Sergei Sobolev in 1958.
In 1970 he designed Setun 70, implementing principles which were later proposed for the RISC architecture independently. He died on 4 December 2014.

See also
 List of pioneers in computer science

References

1925 births
2014 deaths
People from Kamianske
Russian computer scientists
Russian inventors
Soviet computer scientists
Soviet military personnel of World War II
Academic staff of Moscow State University
Russian scientists
Recipients of the Order of the Red Star
Volkswagen ARVW. The ARVW (Aerodynamic Research Volkswagen) concept car was built by Volkswagen in the end of the 1970s, initially for aerodynamic research to investigate the influence of a vehicle's shape on its fuel consumption at high speeds. A tuned, six-cylinder turbodiesel engine and a conventional gearbox were used, while the body was made from aluminium and composite materials.

The ARVW was the fastest diesel car in the world in 1980, reaching a top speed of .

References

ARVW
Solvent casting and particulate leaching. In solvent casting and particulate leaching (SCPL), a polymer is dissolved in an organic solvent. Particles, mainly salts, with specific dimensions are then added to the solution. The mixture is shaped into its final geometry. For example, it can be cast onto a glass plate to produce a membrane or in a three-dimensional mold to produce a scaffold. When the solvent evaporates, it creates a structure of composite material consisting of the particles together with the polymer. The composite material is then placed in a bath which dissolves the particles, leaving behind a porous structure.

References

Polymers
Robert W. Rosenthal. Robert W. Rosenthal (1945 – February 7, 2002) was an American economist, most known for his contributions to game theory.

He obtained a B.A. in political economy from Johns Hopkins University (1966), M.S.  (1968) and Ph.D. (1971) in operations research from Stanford University, advised by Robert B. Wilson. He worked as assistant professor in the department of Industrial Engineering and management science at Northwestern University (1970–1976), was member of the technical staff at Bell Labs (1976–1983), was professor of economics at Virginia Polytechnic Institute and State University (1983–84), State University of New York at Stony Brook (1984–1987) and Boston University where he worked (1987–2002) until his death from a heart attack.  He also had appointments with Massachusetts Institute of Technology (2000), Harvard University (1993), and the Catholic University of Louvain (1973). He held a Fulbright chair in economics at the University of Siena (2001).

He authored many journal articles, and defined the revelation principle and random matching, as applied in works with Henry Landau.  Also, he was associate editor of Games and Economic Behavior (1988–2002), Journal of Economic Theory (1999–2002), Mathematics of Operations Research (1981–1988) and Operations Research: A Journal of the Institute for Operations Research and the Management Sciences (1978–1982).

See also
Mean-field game theory

References

External links

20th-century American economists
Johns Hopkins University alumni
Stanford University alumni
Northwestern University faculty
Scientists at Bell Labs
Virginia Tech faculty
Stony Brook University faculty
Boston University faculty
Harvard University staff
Academic staff of the University of Siena
American game theorists
1945 births
2002 deaths
Academic staff of the Université catholique de Louvain
Fellows of the Econometric Society