omniomni/omni-engineering huggingface dataset:
MCF. MCF can refer to:

Transport and manufacturing
 Modern Coach Factory, Raebareli, an Indian rail manufacturer

Science and technology
 Military-civil fusion, a Chinese economic strategy for technological dominance developed by Xi Jinping
 Magnetic confinement fusion, an approach to thermonuclear fusion that uses magnetic fields
 Muon-catalyzed fusion, an approach to nuclear fusion that uses muons
 Makes caterpillars floppy, a gene in the bacterium Photorhabdus luminescens
 Malignant catarrhal fever (Bovine malignant catarrhal fever), a disease of cattle and related species
 Master Control Facility, ISRO's communication satellite control centre
 Median cell fragility (Erythrocyte fragility), the NaCl concentration at which 50% of cells in a blood sample undergo lysis 
 Methyl chloroform, 1,1,1-Trichloroethane
 Mille cubic feet (Mcf), 1000 cubic feet, unit of volume used in natural gas industry
 Modulation contrast function, a variant of the Optical transfer function, used in optical imaging analysis
 Multi-commodity flow problem, a flow network problem with multiple commodities between different source and sink nodes

Culture and entertainment

 Magic Circle Festival, a German heavy metal music festival
 Málaga CF, a football club based in Málaga, Spain
 Real Madrid CF, a football club based in Madrid, Spain
 Malaysian Chess Federation, organization for chess players in Malaysia

Business and finance

 Mangalore Chemicals & Fertilizers, an Indian fertilizer company
 Marginal cost of funds, an aspect of Excess burden of taxation
 MCF, ISO 4217 code for the Monégasque franc, the former currency of Monaco
 Modern Coach Factory, Raebareli, an Indian rail manufacturer

Computing

 MacCentral Forum (1998-2008), a former on-line forum for Apple Macintosh users
 Meta Content Framework, a discontinued specification of a content format for structuring metadata about web sites
 Modular Crypt Format, a method of storing hashed passwords
 Multimedia Container Format, an unfinished digital media specification which was incorporated into Matroska
 Mystery Case Files, a video game series

Other
 Malaysian Chess Federation, a sport organization in Malaysia
 Marine Commando Force, now MARCOS, the special forces unit of the Indian Navy
 Micro Complement fixation test, a high-sensitivity immunological medical test
 Muskegon Correctional Facility, a state prison in Michigan, United States 
 Michael C. Fina, an American luxury-goods retailer 
 Melamine faced chipboard, a form of Particle board, an engineered wood product
 Municipal Corporation of Faridabad, the city government of Faridabad, India
Maître de conférences, a rank in French academia
 Mully Children's Family, a nonprofit organization for children in need
 Muslim Charities Forum, a religious organization based in the United Kingdom
Jordan Hubbard. Jordan K. Hubbard (born April 8, 1963) is an open source software developer, authoring software such as the Ardent Window Manager and various other open source tools and libraries before co-founding the FreeBSD project with Nate Williams and Rodney W. Grimes in 1993, for which he contributed the initial FreeBSD Ports collection, package management system and sysinstall. In July 2001 Hubbard joined Apple Computer in the role of manager of the BSD technology group, during which time he was one of the creators of MacPorts.  In 2005, his title was "Director of UNIX Technology" and in October 2007, Hubbard was promoted to "Director of Engineering of Unix Technologies" at Apple where he remained until June 2013.

On July 15, 2013, he became CTO of iXsystems where he also led the FreeNAS open source project.

On March 24, 2017, he announced his plan to depart from iXsystems and that he would be joining TwoPoreGuys, a Biotechnology company, as VP of Engineering.  From January 2019–April 2020 he was part of the Engineering Leadership team at Uber and, as of April 2020, is currently Senior Director for GPU Compute Software at Nvidia.

rwall incident 
On March 31, 1987 Hubbard executed an rwall command expecting it to send a message to every machine on the network at University of California, Berkeley, where he headed the Distributed Unix Group. The command instead began broadcasting Hubbard's message to every machine on the internet and was stopped after Hubbard realised the message was being broadcast remotely after he received complaints from people at Purdue University and University of Texas. Even though the command was terminated, it resulted in Hubbard receiving 743 messages and complaints.

References

External links 
 My Broadcast [The UNIX rwall problem] - ACM Risks Digest - April 2, 1987
 History of FreeBSD project
 WorkingMac interview (retrieved from archive.org) - August 16, 2001
 MacSlash interview (retrieved from archive.org) - December 17, 2002
 OSNews interview - April 15, 2003
 Face to Face with Jordan Hubbard, BSDi (retrieved from archive.org) - February 11, 2000
 Salon: Open-sourcing the Apple (retrieved from archive.org) - Jordan initial reactions to the first time he used Mac OS X (November 17, 2000)
 Open Source to the Core - May 1, 2005
 Apple’s Operating System Guru Goes Back to His Roots - Aug 9, 2013
 Feb 20th, 2017 4:05 PM EST, John Martellaro, The Mac Observer, TMO Background Mode: Interview with Open Source Developer & Former Apple Manager Jordan Hubbard

1963 births
Apple Inc. employees
Free software programmers
FreeBSD people
Living people
People from Boulder Creek, California
American computer programmers
People from Honolulu
Abraham Iris. The Abraham Iris was a two-seat touring airplane produced in France in the early 1930s in two slightly different versions, the Iris I with a 75 kW (100 hp) Hispano-Suiza piston engine, and the Iris II with a Renault engine. The Iris was a conventional parasol wing monoplane with a neatly faired-in engine.

Specifications (Iris II)

References

External links
 

Single-engined tractor aircraft
Parasol-wing aircraft
1930s French civil utility aircraft
Abraham aircraft
Aircraft with fixed conventional landing gear
Box mangle. The box mangle is said to have been invented in the 17th century. It consisted of a heavy frame containing a large box filled with rocks, resting on a series of long wooden rollers. Damp laundry could be laid flat under rollers, or wound round the rollers: sometimes enclosed in a sheet in order to keep the laundry clean. When the rollers were filled, one or two people pulled on levers or turned cranks to move the heavy box back and forth over the rollers. The mangle's primary purpose was to press household linen and clothing smooth. 

This was a mechanical version of the hand-held mangle boards and rollers/pins used in many parts of northern Europe. Nowadays the word mangle suggests a wringing device for removing water from laundry in some English-speaking countries, but the box mangle was used for pressing and smoothing, and was an alternative to hot ironing for larger items. Flat items, like sheets and tablecloths, usually needed no further ironing. 

The box mangle was a large and expensive affair and required a fair bit of labor to operate it. It was often used by very large households, commercial laundries or by self-employed mangle women who served their local area. In the 19th century new designs made it easier to operate, and before the middle of the century the upright, space-saving type with cloth pressed between two rollers had become familiar. 

In the late 19th century the commercial steam laundry replaced the box mangle with the steam mangle, turned by steam power.

References

Laundry drying equipment
Georges Abrial. Georges Abrial (1898 in Paris – 1970 in Vauville, Manche) was an early French aerodynamicist.

Life
After graduating from the St Cyr Aeronautical Institute he worked for Levasseur (Levasseur-Abrial A-1) and did some pioneering work into tailless aircraft. He designed several gliders during the 1920s before turning to lecturing the following decade, when he also became influential in the French soaring movement.

Abrial stopped designing new aircraft after 1932 when he abandoned his A-12 project.  He was more attracted by instructorship and educational methods and played an important role in the development of soaring in France during the 1930s. After World War II, he was still active in promoting soaring in France and in French Africa.

In 1954 he came back to the design of tailless aircraft, with the A-13 "Buse" project. But this glider was never built.

Aircraft designs
Abrial A-2 Vautour  (1925) Single-seat sailplane, 12.65 m wingspan
Abrial A-3 Oricou   (1927) Single-engine single-seat powered touring aircraft
Abrial A-12 Bagoas  (1931) Single-seat tailless sailplane of extremely low aspect ratio.  
Abrial A-13 Buse    (1954) Proposed single-seat sailplane. Not completed

Notes

1898 births
1970 deaths
French aerospace engineers
Aerodynamicists
Space program of France
Abrial A-2 Vautour. The A-2 Vautour (Vulture) was a single-seat French glider that was designed by Georges Abrial. It performed well at the Vauville competition of 1925.

Design

The Vautour was designed by Georges Abrial of the Institut aérotechnique de Saint-Cyr and built by Louis Peyret. Each wing, joined to a centre-section on top of the fuselage with light dihedral, had a rectangular plan apart from an angled tip and carried a broad chord aileron which filled about 60% of the span. They were of mixed construction with two rectangular section dural spars and plywood ribs. Each wing was braced with a pair of parallel struts, dural tubes enclosed in streamlined, wooden fairings, between the lower fuselage longerons and the wing spars just inside the ailerons.

Its fuselage was rectangular in section, with spruce longerons and laminated wood frames. The sides were everywhere vertical but ahead of the wing it narrowed in plan and decreased in depth to a rounded nose. The downward sloping upper surface here was not flat but curved, formed from thin aluminium sheet. The pilot's open cockpit was just in front of the leading edge, with a rubber-cord restrained canvas sheet between him and the aluminium surface, intended as  protection in a crash. It contained some basic instrumentation, including an airspeed indicator and an altimeter, both with sensors well above the wing centre-section on a mast, as well as a compass.

The horizontal tail of the Vautour, mounted at mid-fuselage height, was similar in plan to the wing. The tailplane was much narrower than the one piece elevator. The fin was likewise narrower than the rudder and together had a rhomboidal profile, allowing elevator clearance below. Both surfaces were wood-framed and ply covered, with the exception of the fabric covered rudder.

Its landing gear was very simple, with wheels close to the sides on a split axle mounted within the fuselage. Rubber cord shock absorbers were used and the tailskid was also mounted elastically.

Operational history

The date of the first flight of the Vautour is not known but it made its first major public appearance in the meeting held at Vauville from 22 July to 11 August 1925. The competition included both gliders and low-powered aircraft. The Vautour, flown by Auger, gained the prize for greatest altitude above the starting point, reaching . It was placed second in a competition to fly the maximum number of  laps, managing 36.  It remained at Vauville after the contest and in February 1926 Auger returned to it with the intention of an attack on the altitude and distance records, as well as competing in several contests. By April the attempt had been abandoned due to unsuitable winds and the glider was dismantled and returned to Paris, with the hope of later using a site in Eure. There is no record that these attempts were made.

Specifications

References

1920s French sailplanes
Glider aircraft
Vautour
Aircraft first flown in 1925
Abrial A-3 Oricou. The A-3 Oricou (French for African vulture) was a small French touring airplane designed in 1927 by Georges Abrial. It could seat two, and was powered by a 30 kW (40 hp) piston engine.

Specifications (A-3 Oricou)

See also

 History of aviation

References

Single-engined tractor aircraft
1920s French civil utility aircraft
Oricou
Abrial A-12 Bagoas. 

The A-12 was an unusual tailless glider designed by Georges Abrial in the early 1930s. It was not a success and was abandoned in 1932.

Design

The Abrial A-12 was unusual in having a very low aspect ratio wing, even by the standards of its time. Other tailless gliders of the 1920s, notably the Lippisch Storch series had aspect ratios of about 8, compared with the 4.75 of the Abrial. Further, where the Storchs had swept wings the Abrial's was rectangular in plan. After encouraging tests of models in the wind tunnel at St Cyr, Abrial built a full-sized version.

The Abrial's wings had the designer's own reflexed camber aerofoil. Such aerofoils are useful for tailless aircraft, because the pitching moment about the aerodynamic centre of the wing can be zero. The wings were mounted with strong dihedral and braced from above by a V-strut on each side, their apexes meeting at a faired triangular central support structure. It had control surfaces on the wings which may have operated as elevons and trapezoidal rudders mounted on triangular fins at the wing tips.

The pilot's unenclosed seat was immediately in front of the central support structure, at the centre of the wing, with his feet on a rudder bar ahead of the leading edge. The Abrial landed on a skid, with little wheels under the wing tips.

Abrial named the A-12 Bagoas, after the Persian Vizier and poisoner. Its first flights were made during the first week of July 1932. It presented so many technical problems that he abandoned development later that year.

Specifications

References

1930s French experimental aircraft
1930s French sailplanes
Bagoas
Tailless aircraft
Low-wing aircraft
Glider aircraft
Aircraft first flown in 1932
Abramovich Flyer. The Abramovich Flyer was an early aircraft built by Russian aviator Vsevolod Mikhailovich Abramovich in 1912, based on the Wright brothers' designs he had seen while working for their German subsidiary. Differences from the Wright designs of the time included wheeled undercarriage and conventional empennage replacing the canard the Wrights used. Abramovich retained the wing warping technique the Wrights used for banking the aircraft, but controlled this with a control stick rather than the hip-controlled harness of the Wrights' design. Using this aircraft, Abramovich was successful in setting many early aviation records in Russia, including carrying several passengers.

Specifications

References 

Biplanes
1910s Russian experimental aircraft
Wright brothers
Single-engined pusher aircraft
RML. RML may refer to:

RML Group, a motorsports and high performance engineering company
RML 380Z, an 8-bit computer built in Britain
Ratmalana Airport (IATA: RML), near Colombo, Sri Lanka
Ram Manohar Lohia, 20th-century Indian independence activist and socialist political leader
Reuters Market Light, a phone service to provide Indian farmers with timely information
Revised Marriage Law, a 1980 revision of the New Marriage Law in China
Riemann Musiklexikon, a music encyclopedia
Rifled muzzle loader, a type of gun common in the 19th century
AEC Routemaster, a type of double-decker bus
Rocket Madsen Space Lab (RML Spacelab), Copenhagen, Denmark
Rocky Mountain Laboratories, a research institute in Montana, United States
Roddenbery Memorial Library, in Cairo, Georgia, United States
Royal Mail Lines, once a major shipping company, the successor to the Royal Mail Steam Packet Company

See also
AEG helicopter. The AEG helicopter was an unusual German aircraft project, intended to create a portable observation post in the form of a tethered helicopter. It achieved lift by use of two contra-rotating rotors powered by an electric motor that was supplied with power from the ground. The device could be folded for transportation on the back of a truck. An observer's cabin was suspended underneath the rotor assembly, and could be blown clear by an explosive charge in case of emergency. Development commenced in 1933, but it was never put into service by the military.

The system was tested with an up to 800 metre long Very Low Frequency antenna for communication with submerged submarines. The three  power feeder cables doubled as radiators for frequencies from 15 to 60 kHz.

Specifications (AEG helicopter)

See also

References

Bibliography 
Nowarra, Heinz J.. Die Deutsche Luftrüstung 1933-1945 - Vol.1 - AEG-Dornier. Bernard & Graefe Verlag. 1993. Koblenz.  (Gesamtwerk),  (Band 1)
Helmut Maier. Rüstungsforschung im Nationalsozialismus: Organisation, Mobilisierung und Entgrenzung der Technikwissenschaften. Wallstein Verlag. 2002. Page 134.

Helicopter
1930s German military reconnaissance aircraft
Military helicopters
1930s German helicopters
Coaxial rotor helicopters
Electric helicopters
Romuald Adam Cebertowicz. Romuald Adam Cebertowicz (February 7, 1897 in Głowno – January 14, 1981 in Łódź, Poland) was a Polish hydrotechnician and a member of the Polish Academy of Sciences (PAN).

Cebertowicz is the creator of electro-injection method of soil solidification.

References

1897 births
1981 deaths
Polish hydrotechnicians
Recipients of the Medal of the 10th Anniversary of the People's Republic of Poland
Edward Jan Habich. Edward Jan Habich () (31 January 1835, Warsaw – 31 October 1909, Lima, Peru) was a Polish engineer and mathematician. In 1876, he founded the National University of Engineering (), a renowned engineering school in Lima, Peru. He was a member of the Peruvian Geographic Society and an Honorary Citizen of Peru. In his native Poland he took part in the January Uprising against the Russian Empire in 1863.

Burial
Edward Jan Habich is buried at the Cementerio Presbítero Matías Maestro, Lima, Peru.

Gallery

References

External links
 

1835 births
1909 deaths
Engineers from Warsaw
19th-century engineers from the Russian Empire
19th-century Polish scholars
Polish mathematicians
Emigrants from the Russian Empire
Immigrants to Peru
KSEG (software). KSEG is a free (GPL) interactive geometry software for exploring Euclidean geometry. It was created by Ilya Baran.
It runs on Unix-based platforms. It also compiles and runs on Mac OS X and should run on anything that Qt supports. Additionally, it was also ported to Microsoft Windows.

KSEG is a tool designed to let you easily visualize dynamic properties of compass and straightedge construction and to make geometric exploration as fast and easy as possible. KSEG was inspired by the Geometer's Sketchpad, but it goes beyond the functionality that Sketchpad provides.
KSEG can be used in the classroom, for personal exploration of geometry, or for making high-quality figures for LaTeX.

See also 

 Kig – KDE 4 / Qt 4 geometry software

References

External links 
  contains source and windows executable.
 KSEG for Mac OS X.
 Standalone binary for Mac OS X which also includes Qt.
 kseg – freeBSD port.

Free interactive geometry software
Software that uses Qt
Free educational software
NEC SX-6. The SX-6 is a NEC SX supercomputer built by NEC Corporation that debuted in 2001; the SX-6 was sold under license by Cray Inc. in the U.S. Each SX-6 single-node system contains up to eight vector processors, which share up to 64 GB of computer memory. The SX-6 processor is a single chip implementation containing a vector processor unit and a scalar processor fabricated in a 0.15 μm CMOS process with copper interconnects, whereas the SX-5 was a multi-chip implementation. The Earth Simulator is based on the SX-6 architecture. 

The vector processor is made up of eight vector pipeline units each with seventy-two 256-word vector registers. The vector unit performs add/shift, multiply, divide and logical operations. The scalar unit is 64 bits wide and contains a 64 KB cache. The scalar unit can decode, issue and complete four instructions per clock cycle. Branch prediction and speculative execution is supported. A multi-node system is configured by interconnecting up to 128 single-node systems via a high-speed, low-latency IXS (Internode Crossbar Switch).

The peak performance of the SX-6 series vector processors is 8 GFLOPS. Thus a single-node system provides a peak performance of 64 GFLOPS, while a multi-node system provides up to 8 TFLOPS of peak floating-point performance.

The SX-6 uses SUPER-UX, a Unix-like operating system developed by NEC. A SAN-based global file system (NEC's GFS) is available for a multinode installation. The default batch processing system is NQSII, but open source batch systems such as Sun Grid Engine are also supported.

See also
SUPER-UX
NEC SX
Earth Simulator
NEC Corporation

References

External links
SX-6 Specifications
Scalable Vector Supercomputer - SX Series Downloads

Sx-6
Vector supercomputers
EBD. EBD may refer to:

Health and medicine 
 Emotional and behavioral disorders
 Epidermolysis bullosa dystrophica, disease affecting the skin and other organs 
 Evidence-based dentistry
 Extensor digitorum brevis, muscle in the foot

Other uses 
 Ebbsfleet International railway station, in England
 Elections and Boundaries Department of Belize
 Electronic brakeforce distribution, automobile technology 
 Evidence-based design, physical design based on scientific principles 
 Exim Bank (Djibouti), a commercial bank