omniomni/omni-engineering huggingface dataset:
ČSD Class E 499.3. ČSD Class E 499.3 electric locomotives were used primarily for passenger trains in Czechoslovakia. Locomotives which passed to České dráhy, rail operator in the Czech Republic are now classified as Class 163, those which passed to ZSSK, rail operator in Slovakia, are also Class 163.

E 499.3 locomotives operate on the 3,000 V DC system and are essentially a DC only version of the ES 499.1.

ČD Class 163.2 and some ZSSK Class 163 locomotives were rebuilt from ČD and ZSSK Class 162. This was caused by lack of fast dual system locomotives as only one Class 362 locomotive was built. This situation solved ČD by switching the bogies between locomotives of ČD Class 363 (same as ŽSR/ZSSK Class 363) and Class 162, ŽSR by switching only the speed-change box and axletrees between Class 363 and Class 162. After that procedure, the locomotives were classified ČD and ŽSR/ZSSK Class 362 and ČD Class 163.2 and ŽSR/ZSSK Class 163.

History 
The locomotive was produced in the years 1984-1992 in four series of 20, 40 (2nd and 3rd serie) and 60 engines.

Because it was a slightly modified version of ČSD Class ES 499.1, there weren't any prototypes built. The first series of locomotives were sent to Ústí nad Labem, next two series were sent to Olomouc, Košice and Česká Třebová. Currently, the ČD are units in Česká Třebová, Děčín and Bohumín and ZSSK units in Košice and Žilina.

Modernisation 
All 30 locomotives owned by ČD Cargo were rebuilt to class 363.5 (dual voltage) by Škoda. ZSSK announced tender for rebuilding 15 locomotives class 163/162 to class 361, which was won by ŽOS Vrútky. As of January, 2014, 5 locomotives of class 361 (dual voltage, max. speed 140 km/h) and 4 locomotives of class 361.1 (dual voltage, max. speed 160 km/h) were built.

Since 2013, they were used for operation in push-pull sets with driving trailers and they were used mostly operate services in various commuter trains.

Service in other countries

Italy

E.630 
Because of the financial problems of ČSD (and then ČD and ŽSR) after the Velvet revolution, Škoda rebuilt 9 pieces of the fourth series and sold them to FNM, Italy. These were classified as FNM Class E.630. In 2010, all E630 locomotives were sold to Czech private operator RegioJet and were rebuilt to class 162.

Disposition

As of 2008-06-19, 38 163s remained in service with ZSSK, 30 with ČD Cargo and 78 with ČD, as at 2008-03-02.

See also
List of České dráhy locomotive classes

References

External links 

 Czech and Slovak Railway Group in English

Škoda locomotives
Bo′Bo′ locomotives
Electric locomotives of Czechoslovakia
Electric locomotives of Slovakia
Electric locomotives of the Czech Republic
3000 V DC locomotives
Railway locomotives introduced in 1984
Standard gauge locomotives of Czechoslovakia
Standard gauge locomotives of the Czech Republic
Standard gauge locomotives of Slovakia
Bo′Bo′ electric locomotives of Europe
Wait-for graph. A wait-for graph in computer science is a directed graph used for deadlock detection in operating systems and relational database systems. 

In computer science, a system that allows concurrent operation of multiple processes and locking of resources and which does not provide mechanisms to avoid or prevent deadlock must support a mechanism to detect deadlocks and an algorithm for recovering from them.

One such deadlock detection algorithm makes use of a wait-for graph to track which other processes a process is currently blocking on. In a wait-for graph, processes are represented as nodes, and an edge from process  to  implies  is holding a resource that  needs and thus  is waiting for  to release its lock on that resource. If the process is waiting for more than a single resource to become available (the trivial case), multiple edges may represent a conjunctive (and) or disjunctive (or) set of different resources or a certain number of equivalent resources from a collection. The possibility of a deadlock is implied by graph cycles in the conjunctive case, and by knots in the disjunctive case. There is no simple algorithm for detecting the possibility of deadlock in the final case.

A wait-for graph is a graph of conflicts blocked by locks from being materialized; it can be also defined as the graph of non-materialized conflicts; conflicts not materialized are not reflected in the precedence graph and do not affect serializability.

The wait-for-graph scheme is not applicable to a resource allocation system with multiple instances of each resource type.

An arc from a transaction T1 to another transaction T2 represents that T1 waits for T2 to release a lock (i.e., T1 acquired a lock which is incompatible with a previously acquired lock from T2). A lock is incompatible with another if they are on the same object, one is a write, and they are from different transactions.

A deadlock occurs in a schedule if and only if there is at least one cycle in the wait-for graph. Not every cycle necessarily represents a distinct deadlock instance.

References

Concurrency control
Directed graphs
Application-specific graphs
Dean Smith (engineer). Dean Smith is a former winner of the Walter Byers Award as the National Collegiate Athletic Association's annual winner of its highest academic honor in recognition of being the nation's top scholar-athlete.  He is an engineer specializing in chemical warfare agent detection.  The University of Maine has renamed its top scholar-athlete award the M Club Dean Smith Award.

Notes

Living people
21st-century American engineers
Basketball players from Maine
American men's basketball players
Maine Black Bears baseball players
Maine Black Bears men's basketball players
Foxcroft Academy alumni
Year of birth missing (living people)
Engineers from Maine
Fokker F.XX. The Fokker F.XX was a 1930s Dutch three-engined airliner designed and built by Fokker. It was the first Fokker design to use an elliptical-section fuselage instead of the traditional square fuselage and the first Fokker aircraft with retractable landing gear.

Development

The F.XX was a high-wing thick-section cantilever monoplane with a retractable tailwheel landing gear. It was powered by three Wright Cyclone radial engines, one in the nose and one under each wing on struts. The main landing gear retracted into the engine nacelles. The F.XX registered PH-AIZ and named Zilvermeeuw (en: Silver Gull) first flew in 1933. It was delivered to KLM for services from Amsterdam to London and Berlin. Although the F.XX was a more advanced design both in aerodynamics and looks than earlier Fokkers, the arrival of the twin-engined low-wing Douglas DC-2 and DC-3 soon rendered it obsolete. Only one aircraft was built, and after service with KLM was sold to French airline Air Tropique; the plane got a camouflage paint scheme and was registered F-APEZ. Air Tropique had ties with the Spanish Republican government, that used the plane to operate a liaison service between Madrid and Paris. In 1937 it went to LAPE in Spain, and was registered EC-45-E. The plane crashed in Spain February 15, 1938 near Barcelona at Prat de Llobregat Airport.

Licence production in the UK as the Airspeed AS.21 was not proceeded with.

Operators

KLM

Líneas Aéreas Postales Españolas (LAPE) 
Spanish Republican Air Force

Specifications (F.XX)

References

Bibliography

 The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1895

External links

1930s Dutch airliners
F 20
Abandoned civil aircraft projects
Trimotors
High-wing aircraft
Aircraft first flown in 1933
Aircraft with retractable conventional landing gear
Fokker F.XXII. The Fokker F.XXII (also called Fokker F.22) was a 1930s Dutch four-engined 22-passenger airliner designed and built by Fokker.

Development
Developed as a smaller version of the Fokker F.XXXVI the F.XXII is a high-wing cantilever monoplane with a fixed tailwheel landing gear. It was powered by four Pratt & Whitney Wasp radial piston engines mounted in the wing leading edge. The first aircraft registered PH-AJP first flew in 1935, and was followed by two production aircraft for KLM. A fourth aircraft was built for the Swedish airline AB Aerotransport.

A version with retractable landing gear and powered by four 650 hp Gnome-Rhône 9KF engines, the F.XXIII (or F.23), was developed in 1935. The increased engine power allowed a higher weight and increased speed by , but this reduced range from  to . The heavier engines did not justify the revised performance, so the F.XXIII was never built.

Operational history
One KLM aircraft crashed in July 1935 and the other two continued in service until August 1939, when they were sold to British American Air Services and Scottish Aviation in the United Kingdom. A month later the British American Air Services aircraft was also acquired by Scottish Aviation as a navigation trainer. In October 1941, they were both impressed into service with the Royal Air Force and used as transports and crew trainers. One aircraft survived the war to be returned to Scottish Aviation who used it for services between Prestwick and Belfast until it was grounded at the end of 1947.

The Swedish aircraft, which was named Lappland, flew a regular Amsterdam–Malmo service until it was destroyed in an accident in June 1936.

Airspeed Ltd. in Great Britain arranged a license to build F.XXIIs for the British market as the Airspeed AS.16, but no orders were received.

Operators

Civil operators

KLM

AB Aerotransport

British American Air Service
Scottish Airlines
Scottish Aviation

Military operators

Royal Air Force
No. 24 Squadron RAF

Accidents and incidents
 On July 14, 1935, a KLM F.XXII (PH-AJQ, Kwikstaart) crashed on climbout from Schiphol Airport due to double engine failure, killing six of 20 on board.
 On June 9, 1936, an AB Aerotransport F.XXII (SE-ABA, Lappland) crashed at Bulltofta Airport while attempting an emergency landing following triple engine failure, killing one of 13 on board.
 On July 3, 1943, RAF F.XXII HM159 ditched at Loch Tarbert, Scotland due to an in-flight fire, killing all 20 passengers and crew on board.

Specifications (variant)

References

 The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1895/6
 A.J. Jackson, British Civil Aircraft since 1919 Volume 2, 1974, Putnam, London, , Page 373
Taylor, H.A.. Airspeed Aircraft since 1931. Putnam. 1970. London. 

1930s Dutch airliners
F 22
Aircraft first flown in 1935
Four-engined tractor aircraft
Four-engined piston aircraft
High-wing aircraft
Buckling-restrained braced frame. Buckling-restrained braced frame (BRBF) is a structural steel frame that provides lateral resistance to buckling, particularly during seismic activity.

The BRBF is typically a special case of a concentrically braced frame. Tests have demonstrated BRBF systems are highly effective for energy dissipation, while being vulnerable to large deformations and story drift.

A buckling-restrained brace (BRB) consists of a steel core surrounded by a hollow steel section, coated with a low-friction material, and then grouted with a specialized mortar. The encasing and mortar prohibit the steel core from buckling when in compression, while the coating prevents axial load from being transferred to the encasement, thus preventing strength loss and allowing for better and more symmetric cyclic performance. These elements most commonly brace a bay diagonally or in a chevron pattern. Because maximum tension and compression forces in a BRB are much closer than in a standard brace, there is much less imbalance of force in the chevron configuration resulting in smaller beam sizes than a standard braced frame.

Footnotes

References
AISC Seismic Design Manual, Second Printing Pg 5–23
ANSI/AISC 341-05 Section 16 & C16

Structural engineering
Structural steel
Ferro Corporation. Ferro Corporation is an American producer of technology-based performance materials for manufacturers, focusing on four core segments: performance colors and glass; pigments, powders, and oxides; porcelain enamel; and tile coatings systems. Ferro was founded in 1919 by Harry D. Cushman in Cleveland. The company's headquarters are currently located in Mayfield Heights, Ohio.

In 2007, the company was listed as 844 on the Fortune 1000. As of 2011, Ferro operated 40 manufacturing facilities around the world.

Restatement
On January 18, 2005, Ferro Corporation updated the status of its investigation into inappropriate accounting entries in its Performance Chemicals business and its restatement process affecting fiscal years 2001, 2002 and 2003 and the first quarter of 2004.

On September 9, 2021, Ferro announced that its shareholders voted overwhelmingly to approve its acquisition by an affiliate of Prince International Corporation at a special meeting of Ferro shareholders.

The former businesses of the Ferro Corporation, Prince Minerals and Chromoflo merged under the stewardship of Michael Wilson as Vibrantz Technologies.

See also

Printed electronics

References

External links

Mayfield Heights, Ohio
Companies formerly listed on the New York Stock Exchange
Manufacturing companies based in Ohio
Chemical companies established in 1919
Chemical companies of the United States
2022 mergers and acquisitions
Plim. plim may be:

An acronym for:
"Probability limit" (plim) – see  Convergence in probability
"Phosphorescence Lifetime Imaging Microscopy" (PLIM) - An imaging technique similar to Fluorescence-lifetime imaging microscopy but based on phosphorescence rather than fluorescence.
"Physical Layer Information Module" (PLIM) in Router and Switches
"Plant Life Management" (PLIM) in nuclear power
"Programmable Logic In-the-Middle" (PLIM) - A technique in computing where dataflows originated from a CPU are routed through a block of FPGA for analysis and manipulation.
The Journal of Physical Chemistry C. The Journal of Physical Chemistry C publishes scientific articles reporting research on several subdisciplines of physical chemistry:

Nanoparticles and nanostructures
surfaces, interfaces, and catalysis
Electron transport, optical and electronic devices
Energy conversion and storage

It was created in 2007 when The Journal of Physical Chemistry B was split in two, largely due to the recent growth in the area of nanotechnology.  The journal is published weekly, with the first issue on January 11, 2007.  Like The Journal of Physical Chemistry A and B, it is published by the American Chemical Society.

The journal is indexed in: Chemical Abstracts Service (CAS) and British Library. According to the Journal Citation Reports, the journal had a 2022 impact factor of 3.7.

Editor-in-Chief

2007–2019 George C. Schatz
2020–present Joan-Emma Shea

See also 
 The Journal of Physical Chemistry A
 The Journal of Physical Chemistry B
 The Journal of Physical Chemistry Letters
 Russian Journal of Physical Chemistry A
 Russian Journal of Physical Chemistry B
 Annual Review of Physical Chemistry

External links

References

Physical chemistry journals
American Chemical Society academic journals
Weekly journals
Academic journals established in 2007
English-language journals
Nanotechnology journals
Aberdeen Tunnel Underground Laboratory. The Aberdeen Tunnel Underground Laboratory () is a particle physics laboratory in Hong Kong. It is the only underground particle physics lab in Hong Kong. The laboratory is situated between the two vehicular tunnel tubes, behind Gates 2 and 5 of Aberdeen Tunnel on Hong Kong Island.

History
Commissioned by the University of Hong Kong (HKU) after an assessment of all existing tunnels in Hong Kong, the location of the Aberdeen Tunnel, then under construction in the valley between Mount Cameron and Mount Nicholson, was deemed the most suitable site for undertaking particle physics experimentation. Funded entirely by HKU, construction work on the laboratory was completed in 1980.

The laboratory was practically abandoned after HKU researchers completed their experiments, as no other experiments of a similar nature made further use of the facility. However, in 2006, HKU and the Chinese University of Hong Kong petitioned the Aberdeen Tunnel administration for permission to reuse the laboratory, in order to participate in a Daya Bay Reactor Neutrino Experiment by the Daya Bay Nuclear Power Plant. Due to the high amount of traffic through the tunnel, researchers only have access to the laboratory 3 to 4 times per week, mostly during late night and early morning hours. During these experiments, maintenance and cleaning operations within the tunnel have to be suspended, and all traffic is rerouted through one tunnel tube.

Collaborators

References

External links
Daya Bay Reactor Neutrino Experiment & Aberdeen Cosmic Ray Muon-induced Neutron Experiment
 https://web.archive.org/web/20120622211339/http://hk.news.yahoo.com/video/topstory-19458512/title-29722229.html

Particle physics facilities
Underground laboratories
Science and technology in Hong Kong
Subterranean Hong Kong
University of Hong Kong
Chinese University of Hong Kong
Laboratories in China
Physics in China
Jim Parr. James Gordon Parr (May 26, 1927 – April 5, 2000) was an English-Canadian academic, broadcaster and provincial civil servant in the province of Ontario, Canada.

Parr was an engineer by training specializing in metallurgy and he once hosted a programme on CBC Radio called The Mad Metallurgist aimed at popularizing the discipline. He also wrote several books on the subject including The Engineer's Guide to Steel; Man, Metals and Modern Magic and An Introduction to Stainless Steel.

He earned his B.Sc. degree in metallurgy from the University of Leeds and worked as a mining engineer before enrolling at the University of Liverpool to study his doctorate. He lectured there before coming to Canada to work for Inco in Sudbury. He returned to Canada in 1953 to work for the British Columbia Research Council and also lectured at the University of British Columbia.

In 1955, he went to the University of Alberta to accept an appointment as an associate professor and then full professor. He moved to Windsor, Ontario in 1964 to become dean of the faculty of applied science at the University of Windsor.

After serving as chairman of the Commission on Post-Secondary Education in Ontario (COPSEO) and as president of the Ontario Committee on University Affairs, Parr was appointed deputy minister of Colleges and Universities - a civil service position for the provincial government.

In addition to writing poetry, Parr composed selections for the piano and wrote operettas that were performed at the Toronto Arts & Letters Club. Two years before his untimely death, Parr produced a CD, "When Music Sounds" , consisting solely of his own songs, sung by Canadian tenor James Leatch accompanied by pianist Dona Jean Clary.

In 1979, he was appointed chairman of TVOntario during which time he unsuccessfully sought a license for the network from the Canadian Radio-television and Telecommunications Commission (CRTC) to launch a national children's channel. In 1985 he was appointed director-general of the Ontario Science Centre for a three-year term.

References

1927 births
2000 deaths
Ontario civil servants
Canadian television executives
Canadian academics in engineering
Canadian university and college faculty deans
TVO executives
Alumni of the University of Leeds
Anthony Kelly. Anthony Kelly may refer to:

 Anthony Kelly (lacrosse) (born 1980), professional lacrosse player with the Los Angeles Riptide
 Anthony Paul Kelly (1897–1932), American screenwriter
 Anthony Kelly (academic), professor of education at the University of Southampton
 Anthony Kelly (martial artist) (born 1964), grandmaster martial artist and world record holder
 Champ Kelly, American football executive
 Anthony Kelly (materials scientist) (1929–2014) British materials scientist

See also
 Tony Kelly (disambiguation)
 Anthony-Noel Kelly (born 1956), British artist
Curtiss XP-10. The Curtiss XP-10 was an American experimental biplane fighter developed by Curtiss and tested by the United States Army Air Corps, but rejected due to disappointing performance and major problems with the cooling system.

Design and development
Ordered on 18 June 1928, it was intended to be fast and maneuverable enough to win a dogfight. The XP-10 used a gull wing top wing, joined at the fuselage; this offered much better pilot visibility than the traditional biplane configuration. Coincidentally, this also permitted the wing and fuselage to meet at the optimum angle for minimizing drag. The wings were plywood-covered (rather than doped fabric, as used in World War I), and the fuselage was fabric-covered steel tubing.

The XP-10 used a 600 hp (447 kW) Curtiss V-1570-15 Conqueror water-cooled V12 engine. To overcome the drag of a radiator (a quite serious issue before the introduction of ethylene glycol), Curtiss incorporated it into the upper wing. It was formed of corrugated brass sheets through which cooling water was run. While ingenious, this introduced technical and mechanical problems, especially vulnerability to enemy fire in a combat aircraft.

Operational history
Delivered to the Army Air Corps in August 1928, the XP-10 first flew in September.  Despite excellent manoeuvrability, with the XP-10 proving superior to the Curtiss Hawk in testing, persistent problems with cooling and the plumbing of the surface radiator led to the XP-10 being abandoned.

Operators

United States Army Air Corps

Specifications (XP-10)

References

Bibliography

 Dorr, Robert F. and David Donald. Fighters of the United States Air Force. London: Temple, 1990. .
 Green, William. War Planes of the Second World War, Fighters. Volume Four. Garden City, NY: Doubleday & Company, 1973.
 Jones, Lloyd S. U.S. Fighters: 1925-1980s. Fallbrook, California: Aero Publishers, Inc., 1975. .

P-10
Curtiss P-10
Single-engined tractor aircraft
Biplanes
Aircraft first flown in 1928