omniomni/omni-engineering huggingface dataset:
Solae (tower). The Solae is an elevator test tower located in the city of Inazawa, Japan. It is owned by Mitsubishi Electric. The tower is . When completed in 2007, it was the world's tallest elevator test tower. Since that time, the record has been broken by the Hyundai Eizan Tower (205 meters) in 2009, the Hitachi G1 Tower (213 meters) in 2010 and the Kunshan Test Tower in China (235 meters).

References

External links 
 

Mitsubishi Electric
Towers in Japan
Elevator test towers
Buildings and structures in Inazawa
Hunter Boats. Hunter Boats Limited is a British boat builder presently based in Southampton. The company specializes in the design and manufacture of glassfibre sailboats.

The company was founded by in 1969 by Michael Polard, as the Essex Boat Company. In 2009 it became a brand of Lauren Marine of Southampton under the name British Hunter.

History
The first design produced by the new company was the Squib, an open keelboat designed by Oliver Lee in 1967. Lee also designed a cabin version of the Squib in 1972, the Hunter 19, later called the Europa. Lee was the principle naval architect for the company in this period, designing the Hunter 490 and the Hunter 701.

In the early 1970s the company relocated to Rochford and a custom-built plant in that town. At that time it was renamed Hunter Boats Limited and by 1975 David Thomas became the main designer. He drew the Hunter Sonata and the Impala 28.

In the mid-1970s the company produced many racing sailboats, including the designs of Steven Jones, including the Formula 28. His HB 31 was the first production boat to use kevlar laminates in its hull construction. By the 1980s the company started building boats with twin keels and moved away from racing boats to cruising boat designs. The Hunter Horizon 26 was the first of this new range of cruising sailboats and it won the Best Production Boat of the Year award when it was introduced in 1984. The Hunter Horizon 32 also won Best Production Cruiser of the Year in 1987 as the company continued to specialize in cruising sailboats.

In 1995 the company introduced the Thomas-designed Hunter 707 and the following year it was named Yacht of the Year.

Hunter Boats was bought out in 2003 by the Select Yachts Group and added to its portfolio of marine companies that included Cornish Crabbers, Red Fox Yachts, the Landau Launch Company and Cornish Diva.

In 2009 Lauren Marine of Southampton purchased the rights, molds and tooling for the Hunter range of boats and built them under the brand of British Hunter, to distinguish it from the American boat building company, Hunter Marine.

In 2018 the company was producing five designs, the Hunter 20 Sport, Hunter 20 Mini C, Hunter Channel 245, Hunter Channel 27 and the Hunter Channel 31.

Boats 
Summary of boats built by Hunter Boats:

Squib 1967
Hunter 701 (Lee) 1971
Hunter 19 (Europa)  1972
Hunter 490 (Lee)  1972
Hunter Sonata 1976
Impala 28 (Thomas) 1977
Hunter Medina 20 1979
Delta 25 (Hunter) 1980
Hunter 32 (Jones) 1982
Liberty 22 1982
HB 31 1983
Formula One (Jones) 1984
Formula 28 1984
Hunter Horizon 26 1984
Duette 23 1984
Hunter Horizon 32 1987
Minstrel 23 1987
Hunter Horizon 27 1988
Hunter Horizon 27 OOD 1989
Hunter Horizon 272 1993
Hunter Horizon 273 1988
Hunter Horizon 23 1989
Red Fox 200 1990
Channel 323 (Hunter)  1991
Hunter Horizon 21 1992
Hunter Horizon 30 1993
Ranger 265 (Thomas) 1994
Hunter 707 1995
Pilot 27  1996
Ranger 245 (Thomas)  1996
Channel 27 (Hunter) 1999
Channel 31 (Hunter) 2000
Mystery 35 (Hunter) 2003
Hunter 20 Fox C 2000s
Hunter 20 Sport 2010s
Hunter 20 Mini C 2010s
Hunter Channel 245 2010s

See also
List of sailboat designers and manufacturers

References

External links

Hunter Boats
OpenAtom. OpenAtom is a massively parallel quantum chemistry application written in Charm++ for simulations on supercomputers. Its developmental version was called LeanCP. Many important problems in material science, chemistry, solid-state physics, and biophysics require a modeling approach based on fundamental quantum mechanical principles. A particular approach that has proved to be relatively efficient and useful is Car-Parrinello ab initio molecular dynamics (CPAIMD). It is widely used to study systems consisting of hundreds to thousands of atoms. CPAIMD computations involve many interdependent phases with high communication overhead including multiple concurrent sparse 3D fast Fourier transforms (3D-FFTs), non-square matrix multiplies and few concurrent dense 3D-FFTs.

Parallelization of this approach beyond a few hundred processors is challenging, due to the complex dependencies among various subcomputations, which lead to complex communication optimization and load balancing problems. Using Charm++ and its concept of processor virtualization, the phases are discretized into multiple virtual processors which are, in turn, mapped flexibly onto physical processors, thereby allowing significant interleaving of work. Interleaving is enhanced through both architecturally independent methods and network topology aware mapping techniques. OpenAtom has shown good scaling up to 262,144 cores of IBM Blue Gene/Q and 131,072 cores of Blue Waters, a Cray XE6/XK7 system at NCSA.

OpenAtom is freely available for download at the OpenAtom webpage. Published papers can also be found at the website.

See also 
 Charm++
 NAMD
 List of quantum chemistry and solid state physics software

External links
 OpenAtom
 LeanCP
 Charm++
 Piny MD

Computational chemistry software
Molecular dynamics software
Northern California Power Agency. The Northern California Power Agency, located in Roseville, California, is a joint powers agency formed in 1968 to provide its members with electrical energy purchasing, aggregation, scheduling and management. It coordinates with the California Independent System Operator.

As of 2022, the NCPA's 796 megawatt portfolio consisted of geothermal, hydroelectric, and natural gas power plants, which were 55% greenhouse gas emission-free.

In 2006, the NCPA began annual cloud seeding operations to increase precipitation, and as of 2022 was one of seven agencies in California that are running such programs.

Members
As of September 2022:
Alameda Municipal Power
Bay Area Rapid Transit
City of Biggs
City of Gridley
City of Healdsburg
City of Lompoc
City of Palo Alto
City of Ukiah
Lodi Electric Utility
Port of Oakland
Redding Electric Utility
Roseville Electric
Silicon Valley Power
Truckee Donner PUD
Plumas-Sierra Rural Electric Cooperative
Shasta Lake

External links
ncpa.com

References

Energy in California
Companies based in Placer County, California
Roseville, California
American companies established in 1968
Energy companies established in 1968
USS Bache. Three ships associated with the United States Navy have been named Bache.

 , a United States Coast and Geodetic Survey survey ship named for Alexander Dallas Bache, former Superintendent of the Coast Survey, which was assigned to temporary duty with the U.S. Navy between January and June 1898.
 , a United States Coast and Geodetic Survey survey ship named for Alexander Dallas Bache, former Superintendent of the Coast Survey, which served as a patrol vessel in the U.S. Navy from 24 September 1917 to 1 April 1919 and then was returned to the U.S. Coast and Geodetic Survey.
 , named for Commander George M. Bache, a destroyer in commission from 1942 to 1968.

United States Navy ship names
New York Avenue Bridge. The New York Avenue Bridge is a bridge carrying U.S. Route 50 and New York Avenue, NE over the Amtrak, CSX and WMATA rails in Washington, D.C.

In November 2009, the District of Columbia Department of Transportation began a two-year $36.5 million project to repair the underside, deck and roadway of the bridge. Funds for the project were provided through the American Recovery and Reinvestment Act of 2009 (ARRA), and the project was the largest ARRA effort in the District of Columbia.

See also 
 
 
 
 New York Avenue Bridge (Anacostia River)

Footnotes

Road bridges in Washington, D.C.
U.S. Route 50
Bridges of the United States Numbered Highway System
List of United States Navy destroyer leaders. In the 1930s, the United States Navy built two classes of flotilla leaders, the Porter class, and the Somers class. Due to the regulations of the London Naval Treaty, these 13 ships had a displacement of 1,850 tons, compared to the 1,500 tons of a "standard" destroyer, but they were still classed as destroyers and carried the hull classification of (DD). When the treaty ended with the outbreak of World War II in Europe in 1939, the much larger Fletcher class was constructed, making the differentiation irrelevant.

The Atlanta-class cruisers were also built during World War II to act in part as flotilla leaders, though they were mainly employed as antiaircraft cruisers.

Following the war, destroyer leader (DL) was a new hull classification symbol used by the U.S. Navy from the 1950s until 1975. These ships were more commonly called frigates, although they were much larger than frigates of other navies. They were intended to be larger and more capable than destroyers and to lead a destroyer task force.

All but the first five destroyer leaders would be designed as guided missile ships (DLG), and two of the first five would be converted to missile ships.

Eight of these ships would be nuclear powered and hold the hull classification (DLGN).

During the 1975 USN ship reclassification these ships were reclassified as guided missile destroyers (DDG) or guided missile cruisers (CG), depending on their size and capabilities; all the nuclear ships would be classed as (CGN). At the same time the smaller destroyer escorts (DE or DEG) were reclassified as 'frigates' (FF or FFG) and so US terminology was brought into line with that of the other NATO members. The last of the destroyer leaders was decommissioned in 1999. A total of 41 ships bore the DL classification.

References

Citations

Ship classes of the United States Navy
Destroyer leader
United States Navy, leaders
Deperdussin TT. The Deperdussin TT was a French  monoplane built by Société Pour les Appareils Deperdussin, later to become S.P.A.D.  Introduced in 1912, the type was one widely used by the French Air Force (then Aviation Militaire) before the First World War.  In February 1914, an experiment was made to install a machine gun on the aircraft, but this did not see service.

A number were used by the Naval Wing of the British Royal Flying Corps, one being fitted with floats and flown from Lake Windemere.

Operators

Belgian Air Force

French Air Force

Paraguayan Air Force

Portuguese Air Force

Imperial Russian Air Service

Serbian Air Force

Spanish Air Force

Ottoman Air Force

Royal Flying Corps
No. 3 Squadron RFC
Royal Naval Air Service

Specifications

See also

References

 The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 1434

TT
Single-engined tractor aircraft
1910s French military reconnaissance aircraft
Shoulder-wing aircraft
Aircraft first flown in 1912
Rotary-engined aircraft
Multi-room audio. Multi-room audio (distributed audio) systems are audio systems that allow for playback and often control of music throughout an entire home or building. Numerous commercial systems provide this function, or a system can be custom built or homemade.

Types
Whole house audio systems can be classified as:  single source-single zone, single source-multiple zone or multiple source-multiple zone.

Single source, single zone
These systems distribute the same audio source everywhere—individual rooms must listen to the same audio source. This is the simplest type of system that can be installed. If designed properly, no special equipment is required other than one amplifier and a desired audio source. Care must be taken not to overload the amplifier by keeping the total speaker impedance above the amplifier's rated minimum impedance. This can be done by wiring the speakers in series, as opposed to parallel (though if the impedance is too high, power transfer is inefficient), with impedance-matching transformers, or by using constant-voltage transformers (often, 70 volts). These systems are commonly employed in retail environments and large buildings such as churches, where large, open areas benefit from additional speakers.

Single source, multiple zone
Separate volume controls are usually installed in each room or zone to compensate for differences in apparent volume due to room size and shape. Here especially, impedance-matching volume controls can be used to protect the amplifier from overload. This system design is otherwise the same as a single source, single zone in that all zones must listen to the same audio source, though volume control is independent in each room (and audio can be turned off in rooms, as desired).

Multiple source, multiple zone
These systems are the most advanced and flexible, and the most expensive. Different zones can select (and often control) different audio sources independently of other rooms. In contrast to the systems described above, this kind requires multiple amplifiers (at least one per source, but usually one per zone). This kind of system could be assembled from separate components (e.g. a splitter-router-matrix mixer, a processor, amplifiers and control panels), though knowledge of professional audio equipment and automation systems would be required. More commonly, commercial systems are employed to accomplish these tasks. Some systems distribute digital audio over Cat5 cable to amplifiers installed in each zone. Others have all equipment centralized and distribute speaker-level audio from the "headend" equipment location. Manufacturers of such equipment include NuVo and Zon.

Speakers
Virtually any kind of audio speaker may be used in distributed audio applications. Home audio systems usually make use of in-ceiling and in-wall speakers or small "satellite" speakers. Larger venues often use larger speakers. For outdoor installations, speakers may be camouflaged as rocks or hidden in landscaping.

External links
 Smarthome.com Article

Audio players
John M. Riebe. John Michael Riebe (8 May 1921 – 21 February 2011) was an American aeronautical engineer and inventor who contributed to the early designs of flight surfaces.  Other significant contributions included being project engineer in the development of the Grumman F8F Bearcat fighter, involvement with short takeoff and landing projects for airline terminals, and work on control systems for rockets, flying boats, delta wings and powered lift systems.  He performed tests in the numerous wind tunnels of the National Advisory Committee for Aeronautics' Langley Memorial Aeronautical Laboratory in Langley Field, Virginia (now NASA's Langley Research Center in Langley Air Force Base, Virginia), where he was employed.

Many of the tests he performed, as well as the resulting data and reports, were classified at the time because they were wartime reports, but have been since declassified and available to the general public.

Biography
John Michael Riebe was born on 8 May 1921, in Lansford, Pennsylvania, the United States.  He attended Rensselaer Polytechnic Institute in Troy, New York and graduated with a Bachelor of Aeronautical Engineering.  He began working at the National Advisory Committee for Aeronautics on 3 January 1943.  On 19 August 1946, he received an honorable discharge from the United States Army.  He then went on to produce 60 publications and five patents.  He retired from NACA (which had become NASA) in December 1974.

Publicity
In Popular Science, July 2006 edition, a design was featured in an article, which was invented by Riebe & Vernard E. Lockwood.

References
Notes

Bibliography

 Wells, Robert A. "John M. Riebe". Rensselaer: Aero Engineers: SAGA of Members: Book 2: Class of 1942. Ed. Robert A. Wells. Sea Girt, NJ: Private, 2000.

External links
NASA Technical Reports Server

American aerospace engineers
Rensselaer Polytechnic Institute alumni
1921 births
2011 deaths
Buchan trap. A Buchan trap (alternative names: Bristol interceptor, interceptor trap and disconnecting trap) is a device fitted in a domestic sewer pipe to prevent odours entering the pipe from the public sewer and permeating the house, a common problem before individual plumbing fittings were separately trapped.

The trap is made from fireclay and uses a water seal to prevent air passing from the sewer to the pipe. Waste flows from the house through a U-bend in the trap. This means that there is always water in the pipe preventing the passage of anything from the other direction. The device is a large clay U-bend with an air-inlet/access point on the 'house' side. It is located below the ground level, but can be accessed through the air-inlet and sometimes a rodding hole.

Blockage risk
The Buchan trap will collect solids, sludge and waste that is not in suspension. In recent times, non-paper based wipes have posed a particular problem, according to most Water Authorities. The end result of these adverse conditions is a partial or complete blockage. The sewage/rainwater then backs up the pipe and exits from the lowest connected appliance (sink, bath, dish washer, washing machine, etc.). This can be a significant problem in multi-level dwellings (e.g. tenements) where those at the lowest level will receive all the waste waters from those above. They should be checked, and cleaned if required, on a recurring basis, such as annually.

History
The Buchan trap was devised in the 19th century to stop the flow of sewer gases due to the miasma theory of disease. For example, it was believed that the disease cholera was an airborne infection, not waterborne. The Buchan trap is normally found in the bottom  of manholes or drop-shafts. It normally denotes  the end point of the domestic property's sewer  before it joins the main public sewer.

References

Plumbing
Carrozzeria Varesina. Carrozzeria Varesina (established 1845 in Varese) was an Italian coachbuilder, known for their work on industrial vehicles such as double-decker buses for both touring and urban transport. Among their models was ten units of the "Filobus" Alfa Romeo 110AF (1939). They also made bodies for prototypes of cars for companies such as Lancia and Zagato.

A current company with the same name and area of expertise (established 1975) resides in Ospiate di Bollate.

References

Coachbuilders of Italy
Virginia Transformer Corporation. Virginia Transformer Corp (VTC) is the fourth largest power transformer manufacturer in North America, the largest US-owned. It was established in 1971 to provide power transformers to the Appalachian mining industry. Since then it has expanded to provide transformers across North America. The company supplies custom-made transformers to power generating and distributing companies, heavy industries and other businesses. It also designs generator and substation applications.

The company has six manufacturing facilities in North America. The product range covers a wide range, from larger distribution transformers to large power transformers, rectifier and drive-duty transformers, and special transformers for a wide array of applications. VTC has designed transformers to perform at  in the mines of Chile's mountains and for the New York City Subway system.

Key people
Prabhat Jain – President/CEO since 1982
Matthew Gregg – Vice President Operations (Roanoke & Pocatello Plants)
Subhas Sarkar – Technical Manager Development (Retired & part–time consultant)
Tim Haggett – Chief Financial Officer
Mudassar Mohsin – Corporate Head of Human Resources
Rakesh Rathi – VP Engineering & Materials
Rajiv Kumar – Marketing Director

Locations
Roanoke, Virginia – Corporate office and manufacturing plant
Troutville, Virginia – Manufacturing, metal fabrication plant
Pocatello, Idaho – Manufacturing plant
Rincon, Georgia – Manufacturing plant
Chihuahua, Mexico – Two manufacturing plants
Delhi, India – Design, IT and procurement support center

Products
Liquid Filled
Automatic Load Tap Changing
Voltage Regulators
Dry Type
Uniclad
Repair and Refurbishment

References

External links
Official website
VTC Mexico Plant
Virginia Transformer Corp. Contact Information

Manufacturing companies based in Virginia
Norsk Teknisk Porselen. Norsk Teknisk Porselen AS (NTP) is a Norwegian manufacturer of ceramic and composite insulators based in Fredrikstad. NTP mostly produces ceramic insulators for electrostatic precipitators, with sales worldwide. Founded in 1916, the first plastic product produced in Norway was an electrical outlet in bakelite produced by Norsk Teknisk Porselen.

Manufacturing companies of Norway
LuaTeX. LuaTeX is a TeX-based computer typesetting system which started as a version of pdfTeX with a Lua scripting engine embedded. After some experiments it was adopted by the TeX Live distribution as a successor to pdfTeX (itself an extension of ε-TeX, which generates PDFs). Later in the project some functionality of Aleph was included (esp. multi-directional typesetting). The project was originally sponsored by the Oriental TeX project, founded by Idris Samawi Hamid, Hans Hagen, and Taco Hoekwater.

Objective of the project
The main objective of the project is to provide a version of TeX where all internals are accessible from Lua. In the process of opening up TeX much of the internal code is rewritten. Instead of hard coding new features in TeX itself, users (or macro package writers) can write their own extensions.
LuaTeX offers support for OpenType fonts with external modules. One of them, written in Lua, is provided by the LuaTeX team, but support for complex scripts is limited. Since 2020 LuaTeX includes the HarfBuzz engine for correct rendering of complex scripts using OpenType.
An alternate approach can be found on GitHub.

A related project is MPLib (an extended MetaPost library module), which brings a graphics engine into TeX.

The LuaTeX team consists of Luigi Scarso, Taco Hoekwater, Hartmut Henkel and Hans Hagen.

Versions
The first public beta was launched at TUG 2007 in San Diego. The first formal release was planned for the end of 2009, and the first stable production version was released in 2010. Version 1.00 was released in September 2016 during ConTeXt 2016. Version 1.12 was released for TeXLive 2020.

, both ConTeXt mark IV and LaTeX with extra packages (e.g. luaotfload, luamplib, luatexbase, luatextra) make use of new LuaTeX features. (When LuaTeX is used with the LaTeX format, it is sometimes called "LuaLaTeX".) Both are supported in TeX Live 2010 with LuaTeX 0.60, and in LyX. Special support in plain TeX is still under development.

Further development takes place as LuaMetaTeX in connection with the ConTeXt project.

See also

 TeX
 List of TeX extensions

Further reading 
 CTAN: LuaTeX Manual
 Manuel Pégourié-Gonnard: A guide to LuaLaTeX. 5 May 2013.
 LuaTeX development team: Documentation. October 2021.
 Official LuaTeX wiki
 ConTeXt wiki

External links
 LuaTeX official site
 LuaTeX Wiki

References

Free PDF software
Free TeX software
Lua (programming language)-scriptable software
TeX
Curtiss-Wright CW-15. The Curtiss-Wright CW-15 Sedan was a four-seat utility aircraft produced in small numbers in the United States in the early 1930s. It was a braced high-wing monoplane with conventional tailwheel landing gear with a fully enclosed cabin, superficially resembling the Travel Air 10. At the time of the CW-15's design, Travel Air had recently been acquired by Curtiss-Wright.

Operational history
David Sinton Ingalls used a CW-15 for travel while campaigning for Governor of Ohio.

Variants
CW-15C powered by Curtiss Challenger (nine built)
CW-15D powered by Wright R-760 (three built)
CW-15N powered by Kinner C-5 (three built)

Specifications (CW-15C)

References

Citations

Bibliography
 
 

1930s United States civil utility aircraft
Single-engined tractor aircraft
Aircraft first flown in 1931
CW-15
High-wing aircraft
Aircraft with fixed conventional landing gear