omniomni/omni-engineering huggingface dataset:
Threadripper. Threadripper, or Ryzen Threadripper, is a brand of HEDT (high-end desktop) and workstation multi-core x86-64 microprocessors designed and marketed by Advanced Micro Devices (AMD), and based on the Zen microarchitecture. It consists of central processing units (CPUs) marketed for mainstream and workstation segments, and as such comes in two line-ups, Threadripper and Threadripper PRO respectively.

Background 
Threadripper, which is geared for high-end desktops (HEDT) and workstations, was not developed as part of a business plan or a specific roadmap. Instead, a small team inside AMD saw an opportunity to give AMD the lead in desktop CPU performance. After some progress was made in their spare time, the project was greenlit and put in an official roadmap by 2016.

Characteristics 
Threadripper chips have higher core counts, increased power requirements, support faster memory, and more expansion opportunities. The Zen 4 core's pipelines use a high density leading-edge 5 nm process, which allows for larger instruction and data caches, deepending buffers and queues.

These chips use larger sockets such as TR4, sTRX4, sWRX8, and sTR5 which support additional memory channels and PCI Express lanes. When compared to non-HEDT CPUs:
 Higher core count (up to 96 cores)
 Higher power consumption
 Additional memory channels
 Increased RAM capacity
 More PCIe lanes

Threadripper PRO 

The Threadripper PRO line-up debuted with the 3000 series for workstations and adds support for increased RAM capacity (2TB vs 1TB) and memory channels (eight channels vs four channels) when compared to regular Threadripper. It is targeted at the workstation market.

List of Ryzen Threadripper processors

Desktop

Whitehaven (Threadripper 1000 series, Zen based)

Colfax (Threadripper 2000 series, Zen+ based)

Castle Peak (Threadripper 3000 series, Zen 2 based)

Chagall (Threadripper 5000 series, Zen 3 based)

Storm Peak (Threadripper 7000 series, Zen 4 based)

See also 
 List of AMD Epyc processors
 List of AMD FX processors
 List of AMD Opteron processors
 List of AMD Ryzen processors

References

AMD x86 microprocessors
Computer-related introductions in 2017
Keisei 3400 series. The  is a three-door commuter electric multiple unit (EMU) train type operated by the private railway operator Keisei Electric Railway in the Tokyo area of Japan since 1993.

Operations 
The 3400 series often run on Keisei Main Line services, as well as through services onto the Toei Asakusa Line, Keikyu Main Line, Keikyu Airport Line, and Hokuso Line. The trains do not typically run on the Narita Sky Access Line.

Formations
, the fleet consists of five eight-car sets, formed as shown below, with six motored cars.

Cars 2 and 7 are each fitted with two single-arm pantographs, while car 5 has one.

History
The 3400 series trains entered service in 1993, and were built using the underframes and control equipment from the original AE series Skyliner Limited Express EMUs and steel bodies based on the (stainless steel bodied) 3700 series EMUs. Construction continued until 1995.

Withdrawal 
Following the introduction of new 3100 series EMUs for use on Narita Sky Access Line services, Keisei began relegating its 3050 series fleet to mainline operations, thus resulting in the 3400 series fleet being withdrawn from 2020.  one 3400 series set remains in operation.

References

External links

 Keisei rolling stock information 

3400 series
Electric multiple units of Japan
Train-related introductions in 1993
1500 V DC multiple units of Japan
Daiei Sharyo rolling stock
Vayl Oxford. Vayl Stanley Oxford (born March 1, 1952) is a national security policy adviser who was selected by Secretary James Mattis in 2017 to head the Defense Threat Reduction Agency. Oxford was previously a security adviser at the Pacific Northwest National Laboratory.

Education
Born in New Mexico and raised in Tennessee, Oxford graduated in 1974 with a B.S. degree in general engineering from the United States Military Academy, and then in 1976 with an M.S. degree in aeronautical engineering from the U.S. Air Force Institute of Technology.

Career
During his Air Force tenure, Oxford held several positions associated with aircraft and weapons development, and war plans analysis in Europe and the Pacific.

Oxford was an assistant professor of aeronautics at the Air Force Academy from 1982 to 1986.

Oxford became director for counterproliferation at the Defense Nuclear Agency and the Defense Special Weapons Agency, from 1993 until 1998.

Oxford was director for counterproliferation on the United States National Security Council.

In 2004, President George W. Bush appointed Oxford to head the Homeland Security Advanced Research Projects Agency (HSARPA). Subsequent to that appointment, Oxford was Director of the Domestic Nuclear Detection Office, following its creation in 2005. During his tenure, the DNDO invested heavily in Radiation Portal Monitor technology to scan cargo entering the United States for radiological weapons, technology Oxford strongly promoted.

In later years, Oxford served as head of the Defense Threat Reduction Agency.

References

1952 births
Living people
United States Military Academy alumni
Military personnel from Tennessee
United States Air Force officers
Air Force Institute of Technology alumni
United States Air Force Academy faculty
United States National Security Council staffers
George W. Bush administration personnel
United States Department of Homeland Security officials
First Trump administration personnel
Defense Threat Reduction Agency
China Railways SS4. The Shaoshan 4 () is a type of electric locomotive used on the People's Republic of China's national railway system. This locomotive was built by the Zhuzhou Electric Locomotive Works. The power supply was industrial-frequency single-phase AC, and the axle arrangement Bo′Bo′+Bo′Bo′.

In 1993, Zhuzhou Electric Locomotive Works produced SS4G (Chinese: 韶4改). SS4G are very similar to standard SS4, apart from an improved electrical technology.

SS4 Electric Locomotive is an eight shaft fixing reconnection heavy freight electric locomotive which based on two four-axle locomotives connected. One unit, SS4-0043, was damaged in a tunnel during the 2008 Sichuan earthquake.

Manufacturers
SS4s have been manufactured by several companies:
 Zhuzhou Electric Locomotive Works (0001～0158; 0159～1175; 1886)
 Datong Electric Locomotive Works (6001～6168)
 Ziyang Locomotive Works (3001～3002)
 Dalian locomotive works (7001～7110; 7121～7241)

See also
 China Railways SS1
 China Railways SS3
 China Railways SS3B
 China Railways 8K
 China Railways 8G

Preservation
 SS4-0063: is preserved at Taiyuan Locomotive Depot, Taiyuan Railway Bureau
 SS4-0168: is preserved at the China Railway Museum
 SS4-6001: is preserved at the China Railway Museum

References

Bo′Bo′+Bo′Bo′ locomotives
SS4
25 kV AC locomotives
Railway locomotives introduced in 1985
Standard gauge locomotives of China
Zhuzhou locomotives
CSR Ziyang Locomotive Co., Ltd. locomotives
CRRC Dalian locomotives
CRRC Datong locomotives
Sikorsky S-73. The Sikorsky S-73 was a proposed aircraft design to meet the United States Army requirement in 1970 for a Heavy Lift Helicopter (HLH) capable of carrying , a lifting capacity more than twice that of Sikorsky's most powerful helicopter at that time.

The Sikorsky's S-73 design was an enlarged version of the successful CH-54/S-64 with a simplified and improved single main rotor powered by three General Electric TF34-58 turboshaft engines rated at a combined . A crew of five would operate the aircraft from the forward cockpit with pushbuttons replacing the traditional cyclic stick and collective lever. Behind the cockpit an aft cabin provided capacity for 12 combat troops.

Sikorsky submitted their design in February 1971, then in May the Army declared the Boeing Vertol XCH-62 winner of the contract, ending the Sikorsky S-73 program.

Specifications

See also

References

Sikorsky aircraft
Three-turbine helicopters
United States military helicopters
Theoretical strength of a solid. The theoretical strength of a solid is the maximum possible stress a perfect solid can withstand. It is often much higher than what current real materials can achieve. The lowered fracture stress is due to defects, such as interior or surface cracks. One of the goals for the study of mechanical properties of materials is to design and fabricate materials exhibiting strength close to the theoretical limit.

Definition 
When a solid is in tension, its atomic bonds stretch, elastically. Once a critical strain is reached, all the atomic bonds on the fracture plane rupture and the material fails mechanically. The stress at which the solid fractures is the theoretical strength, often denoted as . After fracture, the stretched atomic bonds return to their initial state, except that two surfaces have formed.

The theoretical strength is often approximated as:  

where 
 is the maximum theoretical stress the solid can withstand.
 E is the Young's Modulus of the solid.

Derivation 
The stress-displacement, or  vs x, relationship during fracture can be approximated by a sine curve, , up to /4. The initial slope of the  vs x curve can be related to Young's modulus through the following relationship:

where 
 is the stress applied.
 E is the Young's Modulus of the solid.
  is the strain experienced by the solid.
 x is the displacement.

The strain  can be related to the displacement x by , and  is the equilibrium inter-atomic spacing. The strain derivative is therefore given by 

The relationship of initial slope of the  vs x curve with Young's modulus thus becomes 

The sinusoidal relationship of stress and displacement gives a derivative:

By setting the two  together, the theoretical strength becomes:

The theoretical strength can also be approximated using the fracture work per unit area, which result in slightly different numbers. However, the above derivation and final approximation is a commonly used metric for evaluating the advantages of a material's mechanical properties.

See also 
 Strength of materials
 Fracture mechanics
 Solid mechanics
 Stress (mechanics)
 Ultimate tensile strength
 Fracture
 Creep (deformation)
 Material Failure Theory

References 

Solid mechanics
Materials science
Secunderabad–Dhone section. Secunderabad–Dhone section is an electrified single-track railway section in Hyderabad railway division of South Central Railway zone. It connects Hyderabad of Telangana with Dhone in Andhra Pradesh. The section is a part of Train Collision Avoidance System.project

History 
This line construction was started in 1922 and completed in 1929 as a metre-gauge railway line during British era. This metre-gauge line was converted into broad-gauge railway line in between 1993 and 1998. As of March 2023, electrification is in progress from Gadwal to Kurnool. The doubling of this line was approved in 2023.

Route 
This route starts from  and passes through , Gadwal,  and joins .

References 

5 ft 6 in gauge railways in India
Rail transport in Andhra Pradesh
Railway lines opened in 1932
1922 establishments in India
Luis de la Peña. Luis Fernando de la Peña-Auerbach known as Luis de la Peña is a Mexican physicist, born in Mexico City in 1931. He is a researcher of the Institute of Physics and professor of the Faculty of Sciences of the National Autonomous University of Mexico (UNAM) and is a member of the Science Advisory Council of the Presidency of Mexico.

He graduated from ESIME of the National Polytechnic Institute with a degree in mechanical-electrical engineering and began his professional activity as a designer of audio systems. From 1954 was professor of the ESIME and from 1958 definitively joined UNAM. He completed his PhD in 1964 under the direction of Arseny Sokolov at the Moscow State University in the Soviet Union.

He is known most for his contributions towards the field of stochastic electrodynamics (SED). In 2002 he was awarded the National Prize for Arts and Sciences in the Physics, Mathematics, and Natural Sciences category.

Selected publications

Papers

Books

References

Notes

Bibliography

External links

1931 births
Living people
Theoretical physicists
20th-century Mexican physicists
Quantum physicists
Scientists from Mexico City
Instituto Politécnico Nacional alumni
Moscow State University alumni
Academic staff of the National Autonomous University of Mexico
National Prize for Arts and Sciences (Mexico)
Aerial Engineering Corporation Standard 6W-3. The Aerial Engineering Corporation Standard 6W-3 was a commercial transport modification of the US Standard J-1 biplane military trainer aircraft, with new wings, engine and accommodation for four passengers. First flown in 1925, it was built in small numbers.

Design and development

The Standard J-1 military trainer had been built in large numbers at the end of World War I. With many surplus after the war, it was a natural choice for adaptation by several manufacturers. Ariel Service, with the experienced designer Harvey Mummert who was an early collaborator with Glenn Curtiss, produced the Mercury Standard 6W-3 by combining a completely new wing with a Standard J fuselage and empennage, modified to accommodate four passengers rather than a student and with a new and more powerful engine.

The Standard 6W-3 was a single bay biplane with constant chord, straight-edged wings swept at 5° and with a more modern, thicker airfoil than most of those used during WWI. Its upper wing was flat but the lower one had 1.5° of dihedral. There were balanced ailerons on the upper wing. Both wings were wooden structures based on twin spruce box spars with the lower wing attached to the lower fuselage longerons and the upper wing braced to it. without stagger, by a pair of vertical interplane struts on each side between the spars.  The narrow centre section, where the chord was reduced to improve the pilot's upward field of view, was supported over the fuselage with pairs of N-form cabane struts.

Its modified Standard fuselage, with new longerons and covering, now housed a   six-cylinder, water-cooled inline Curtiss C-6 engine with a honeycomb radiator in front of it and a fuel tank in the upper wing. Immediately behind it a new, large, under-wing cockpit with seats for four passengers, two in aft-facing side-by-side seats  and two more opposite them.  The seats were easily replaceable, allowing the 6W-3 to act as a mailplane. The pilot was in a separate cockpit behind the passengers with a large fairing behind his head.

The empennage was conventional, with a low aspect ratio tailplane and generous elevators mounted on top of the fuselage.  The fin was triangular, with a rounded rudder.  The 6W-3 had conventional, fixed, tailskid landing gear with wheels on a single axle held by twin V-struts to the lower fuselage longerons. Rubber cord shock absorbers were fitted.

The first flight was in 1925. Fewer than ten were built.

Specifications

References

1920s United States civil utility aircraft
Single-engined tractor aircraft
Biplanes
Aircraft first flown in 1925
2016–17 RPI Engineers women's ice hockey season. The Rensselaer Engineers represented Rensselaer Polytechnic Institute in ECAC women's ice hockey during the 2016–17 NCAA Division I women's ice hockey season.

Offseason

April 5:Josefine Hansen playing for the Danish National Team, was named the 2016 IIHF World Championship Best Defenseman.

Recruiting

2016–17 Engineers

Schedule

|-
!colspan=12 style="background:#F7001F;color:white;"| Regular Season

|-
!colspan=12 style="background:#F7001F;color:white;"| ECAC Tournament

References

Rensselaer
RPI Engineers women's ice hockey seasons
RPI
RPI
Ryam Sugar Factory Railway. The Ryam Sugar Factory Railway was owned and operated by the Ryam Sugar Factory in Bihar, India.

History 
The Ryam Sugar Factory was incorporated in 1914 as the Tirhut Co-operative Sugar Co Ltd. It was located in a town now known as Raiyam (मैथिली) 15 km north-east of Darbhanga. The factory had two 2 ft (610 mm) narrow gauge railway lines operating as a field system, to bring cane into the factory:
 Line to Mokaddampur, 14 km long, which remained in use until its closure in 1994. 
 Line to Sakri, 10 km long, a station on the 'Darbhanga-Bhaptiahi Branch Line' of the Bengal Nagpur Railway (BNR). This line was closed significantly earlier than the other line.

Stationary steam engines 
In No. 1 Mill stationary steam engine #2619 (1932) by Mirrlees, Watson was used (single cylinder, 24” x 48”, 273 hp, Corliss valves, cost Rs 16000 new). A Nos 2, 3 and 4 Mills stationary steam engine #2423 (1914) by Mirrlees, Watson was installed (single cylinder, 300 hp, piston valves, cost Rs 15000 new).

Locomotives

References 

2 ft gauge railways in India
History of rail transport in Bihar
Railway lines closed in 1994
Sugar industry of India
Sugar mill railways
Swiss Society for Optics and Microscopy. The Swiss Society for Optics and Microscopy (SSOM) (; ) is a learned society for the promotion of optics and microscopy (and more recently nanotechnology) in Switzerland.

It is a member of Swiss Academy of Natural Sciences (SCNAT), one of four of the constituent members of the Swiss Academies of Arts and Sciences. It is also a member of the International Commission for Optics, the International Committee on the Science of Photography, the European Optical Committee, the European Optical Society and the European Microscopy Society (regional committee of the International Federation of Societies for Microscopy).

History
Te society was founded on 1949 as the Swiss Committee for Optics. In 1969 following changes in their constitution, it was accepted into the Swiss Academy of Natural Sciences which led its name being changed to the Swiss Society for Optics and Electron Microscopy(Société Suisse d'Optique et de Microscopie Electronique/Schweizerische Gesellschaft für Optik und Elektronenmikroskopie). In 1955 the society was split into two sections, one for electron microscopy and the other for optics, each with their own secretaries.

In 1976, during the 6th European Congress of Electron Microscopy in Jerusalem, SSOM became a founding member of the Committee of European Societies of Electron Microscopy (CESEM), which in 1998 became the European Microscopy Society. In 1987 it joined the European Federation for Applied Optics (Europtica) and the Swiss Academy of Technical Sciences (SATW) (which later become the Swiss Academy of Engineering Sciences).

In 2007 there were 387 individual members and 68 corporate members with 200 delegates, of which 45% were from industry, 40% from academia, and 15% from research institutes.

Presidents and Secretaries
Listed below are the presidents and secretaries of the society from 1947 until 1983.

Swiss Committee for Optics (SCO)

Presidents
H. König, 1947-1952
N. Schätti, 1953-1954

Secretaries
W. Lotmar, 1947-1954

Swiss Committee for Photonic and Electronic Optics
In French: Comité Suisse d'Optique Photonique et Electronique

Presidents
N. Schätti, 1955-1966
L. Wegmann, 1967-1968

Electron Microscopy Secretaries
A. Gautier, 1955-1960
L. Wegmann, 1961-1966
M. Gribi, 1967-1968

Optics Secretaries
W. Lotmar, 1955-1956
E. Millet, 1957-1962
A. Werfeli, 1963-1966
R. David, 1967-1968

Swiss Society for Optics and Electron Microscopy
In French: Société Suisse d'Optique et de Microscopie Electronique

Presidents
L. Wegmann, 1969-1976
W. F. Berg, 1977-1980
J. R. Günter, 1981-1986
R. Guggenheim, 1987-?

Electron Microscopy Secretaries
M. Gribi, 1969-1970
W. Stäubli, 1971-1972
G. Kistler, 1973-1976
J. R. Günter, 1977-1980
R. Guggenheim, 1981-1986
R. Gotthardt, 1987-?

Optics Secretaries
R. David, 1969-1970
C. v. Planta, 1971-1972
F. K. v. Willisen, 1973-1976
W. Balmer, 1977-1980
D. Gross, 1981-1982
E. Mathieu, 1983-?

References

1949 establishments in Switzerland
European Microscopy Society
Scientific societies based in Switzerland
Scientific organizations established in 1949
American Supply Company Building. The American Supply Company Building is a historic industrial building at 1364 Broad Street in Central Falls, Rhode Island.  Built in 1876, it was home to a prominent regional manufacturer of loom parts supplied to the area's textile manufacturers.  The building was listed on the National Register of Historic Places in 2017.  As of 2017, it is vacant and owned by the city, which is considering adaptive reuse for the property.

Description and history
The American Supply Company Building is located in northern Central Falls, on the west side of Broad Street on the south bank of the Blackstone River.  It is across the street from the historic Valley Falls Mill.  It is a 2-1/2 story wood frame structure, finished in vinyl siding laid over original wooden clapboards.  It is covered by a gabled roof with continuous shed-roof dormers.  Its western elevation consists of protective plywood, due to the c. 2000 demolition of a large ell.  The interior of the building is basically intact, although there is no longer any manufacturing equipment in it.  It does retain elements of a late 19th-century freight elevator powered by water or steam.

The American Supply Company was founded in 1883 by the merger of three businesses involved in the manufacture of parts for large textile weaving looms.  Myron Fish founded one of these companies in Worcester, Massachusetts in the 1860s, and was lured to Central Falls by the offer of manufacturing space in the Valley Falls complex.  In 1876, Fish contracted with the Valley Falls Company to lease space across Broad Street for the construction of a dedicated manufacturing space.  Fish specialized in manufacturing belts, but also made other parts.  He merged in 1883 with John Kendrick, a manufacturer of similar specialty parts for looms, who was based in Providence.  The new company was called the American Supply Company.  In 1890 it greatly expanded the facility on Broad Street, building an ell that dwarfed the size of the original building; this was demolished about 2000, along with a boiler house and shed that also stood on the property.

The American Supply Company was harmed by New England's decline as a textile center, and closed in 1961.  The building was used from 1963 to 1991 by a rug manufacturer, and has been owned by the city or state for most of the time since 1995.  As of 2017, the city owns the property and is considering adaptive uses suitable for its riverfront location.

See also
National Register of Historic Places listings in Providence County, Rhode Island

References

Buildings and structures in Central Falls, Rhode Island
Industrial buildings and structures on the National Register of Historic Places in Rhode Island
National Register of Historic Places in Providence County, Rhode Island
Dan Ormsbee. Daniel Wilt Ormsbee (March 4, 1884 – April 3, 1985) was an American architect. With John Branner and Shirley Baker he submitted a design for the Stanford Stadium into the town planning category of the art competitions at the 1932 Summer Olympics, but did not win a medal. He was born in Nord, California and attended California State University, Chico. In 1923 he and Baker opened the private engineering firm Baker & Ormsbee and ran it for a decade. Ormsbee moved to Colorado in 1933 to take up a job with the Colorado State Highway Department (now the Colorado Department of Transportation). At the time of his retirement in 1955 he was District Engineer in charge of the Valley Highway portion of Interstate 25 in Colorado. He died at the age of 101 in April 1985.

References

1884 births
1985 deaths
American men centenarians
American architects
Olympic competitors in art competitions