omniomni/omni-engineering huggingface dataset:
Korail Class 200000. The Korail Class 200000 or TEC (Trunk-line Electric Car) is a type of electric multiple unit operated by Korail for the Nuriro services.

History 
It was originally scheduled to deliver units in the summer of 2008 and start operation on 15 December of the same year with the extension of Line 1 of the Seoul Metropolitan Subway. Due to the financial crisis, the amount of foreign currency delivery more than doubled from the time of contract. The first train was delivered on 9 January 2009, and the trial operation began on 6 February. On 1 June 2009, the trains entered regular service .

Gallery

See also
 Nuriro

References 

Electric multiple units of South Korea
Hitachi multiple units
Train-related introductions in 2009
25 kV AC multiple units
Michelle Couttolenc. Michelle Couttolenc is a Mexican sound engineer. She won an Academy Award in the category Best Sound and the BAFTA Award for Best Sound for the film Sound of Metal. Along with fellow nominees Jaime Baksht and Carlos Cortés Navarrete, she became the first Mexican sound engineer who won an Academy Award and the first Mexican woman sound engineer to ever be nominated. She is also the recipient of six Ariel Awards for Best Sound.

Selected filmography 
 Pedro Páramo (2024; re-recording mixer) 
 La cocina (2024; re-recording mixer)
 Memory (2023; re-recording mixer)
 Do Not Expect Too Much from the End of the World (2023; re-recording mixer)
 El eco (2023; re-recording mixer)
 Cassandro (2023; re-recording mixer)
 Familia (2023; re-recording mixer)
 The Kings of the World (2022; re-recording mixer)
 Rebel (2022; re-recording mixer)
 A Cop Movie (2021; re-recording mixer)
 New Order (2020; re-recording mixer)
 Sound of Metal (2020; Academy Award and BAFTA Award for Best Sound co-won with Nicolas Becker, Jaime Baksht, Carlos Cortés Navarrete and Phillip Bladh)
 I'm No Longer Here (2019; re-recording mixer)
 Roma (2018; adr re-recordist)
 Tigers Are Not Afraid (2017; re-recording mixer assistant)
 Ana y Bruno (2017; re-recording mixer)
 ¿Qué culpa tiene el niño? (2016; re-recording mixer)
 The 4th Company (2016; re-recording mixer assistant)
 You're Killing Me Susana (2016; re-recording mixer assistant)
 The Thin Yellow Line (2015; re-recording mixer assistant)
 Gloria (2014; re-recording mixer assistant)
 Güeros (2014; re-recording mixer assistant)
 Instructions Not Included (2013; re-recording mixer assistant)
 The Golden Dream (2013; re-recording mixer assistant)
 Post Tenebras Lux (2012; re-recording mixer assistant)
 Perras (2011; re-recording mixer assistant)
 Abel (2010; re-recording mixer assistant)
 Paradas continuas (2009; re-recording mixer assistant)
 Rudo y cursi (2008; re-recording mixer assistant)
 Presumed Guilty (2008; re-recording mixer assistant)
 Silent Light (2007; re-recording mixer assistant)
 Déficit (2007; re-recording mixer assistant)
 Efectos secundarios (2006; re-recording mixer assistant)
 Pan's Labyrinth (2006; re-recording mixer assistant)

Awards and nominations

References

External links 

Living people
Place of birth missing (living people)
Year of birth missing (living people)
American audio engineers
Mexican audio engineers
Best Sound Mixing Academy Award winners
Best Sound BAFTA Award winners
21st-century American engineers
21st-century American women engineers
21st-century Mexican engineers
Henry Francis Walling. Henry Francis Walling (June 11, 1825 - April 8, 1889) was a notable American civil engineer and cartographer.

Walling was born in Burrillville, Rhode Island, where he was educated at public schools. After graduation he became an assistant librarian in the Providence Athenaeum, during which time he studied mathematics and surveying. He then entered the office of Samuel Barrett Cushing, a civil engineer in Providence, whose partner he became in 1846. He began topographic work in 1849, and prepared atlases containing full maps and scientific descriptions of most of the northern American states and the Dominion of Canada. After preparing at least 50 town maps in the Massachusetts vicinity, in 1855 he became the Commonwealth's Superintendent of the State Map. In 1856 he moved to New York City for its quality lithographers.

In 1867 Walling became chair of civil engineering in Lafayette, in which role he served for three years, but then resigned to accept an appointment as assistant in the Office of Coast Survey. He joined the newly-formed United States Geological Survey in 1883, and in 1884 was assigned to duty for the geodetic survey of Massachusetts in preparation of the state maps, on which work he was engaged at the time of his death.

Walling was a Fellow of the American Association for the Advancement of Science and of the American Society of Civil Engineers.

Wallings died of a heart attack in Cambridge, Massachusetts in 1889.

References

Further reading 
 
 Herringshaw's National Library of American Biography (Richards-Zwemmer), Thomas William Herringshaw, American Publishers' Association, page 584, 1914.

American cartographers
Fellows of the American Association for the Advancement of Science
Fellows of the American Society of Civil Engineers
People from Burrillville, Rhode Island
1825 births
1889 deaths
Apple Polishing Cloth. The Polishing Cloth is a small piece of off-white microfiber cloth sold by Apple Inc. since October 2021 as a screen cleaning aid for its laptops and mobile devices. It is also intended as a replacement for the cloth that comes with Apple's monitors such as the Pro Display XDR, and is designed for cleaning the 'nano-texture glass' version of the monitor with.

The cloth gained media attention due to its high $19 retail price. The New York Times described this pricing as "bold even by Apple’s standards, a company whose legions of loyal customers are conditioned to stomach steep prices." Nonetheless, it was Apple's most back-ordered item in October 2021, with delivery times of several months. The expensive cloth and its popularity were soon the subject of numerous jokes in the media and on social media, which in turn provided grounds for criticism of the media for providing Apple's extravagances with free advertising.

The tech website iFixit 'disassembled' the cloth as part of a tongue-in-cheek product teardown, describing it as being composed of two layers and having "a distinct synthetic leather feel (...) with a hint of fuzziness, similar to Alcantara." The cloth also has the Apple logo embossed in the bottom right corner.

See also
iPod Socks

References 

Apple Inc. products
Cleaning products
Products introduced in 2021
Wang An (born 1958). Wang An (; born 9 August 1958) is a Chinese engineer and business executive who was general manager and chairman of China International Engineering Consulting Corporation, and general manager of China National Coal Group. He was an academician of the Chinese Academy of Engineering.

Biography 
Wang was born in Liangcheng County, Inner Mongolia, on 9 August 1958. He graduated from Shanxi Mining Institute (now Taiyuan University of Technology) in 1982, and earned a master's degree from Liaoning Technical University in 2002.

He entered the workforce in August 1982, and joined the Chinese Communist Party (CCP) in June 1988. Beginning in 1982, he served in several posts in Wuda District Mining Bureau, including administrator, deputy team leader, team leader, engineer, and chief engineer. He was dispatched to Shenhua Group in August 1998. He moved up the ranks to become deputy general manager in July 2008. In September 2008, he became general manager of China National Coal Group, the second largest state-owned coal mining enterprise in China, rising to chairman in August 2014. In September 2015, he appointed he general manager of China International Engineering Consulting Corporation. After this office was terminated in July 2020, he rose to become chairman, serving until October 2021.

Downfall
On 29 October 2021, he has been placed under investigation for "serious violations of discipline and laws" by the Central Commission for Discipline Inspection (CCDI), the CCP's internal disciplinary body, and the National Supervisory Commission, the highest anti-corruption agency of China. Before he stepped down, three academicians of the Chinese Academy of Engineering had been sacked for graft, namely , Zhou Guotai and Meng Wei.

Honours and awards 
 2009 Member of the Chinese Academy of Engineering (CAE)

References 

1958 births
Living people
People from Liangcheng County
Engineers from Inner Mongolia
Businesspeople from Inner Mongolia
Taiyuan University of Technology alumni
Liaoning Technical University alumni
Members of the Chinese Academy of Engineering
German Centre for Rail Traffic Research. The German Centre for Rail Traffic Research () is an independent, technical-scientific departmental research institution of the Federal Government. It was founded on May 23, 2019, and is located as an independent federal institute at the Eisenbahn-Bundesamt. Its mission is to strengthen rail transport in Germany through application and solution-oriented research.

The budget for 2019 was 5 million euros and was expected to increase to 20 million euros in 2020. 2020 staff should be built up first and the research content (along the federal research program) should be specified later.

Tasks 

The coalition agreement for the 19th Election Period foresees a German Centre for Rail Transport Research (DZSF). This center should document research findings, manage and coordinate research projects, and also carry out research itself. This is intended to achieve a more effective use of resources and a lasting strengthening of railway traffic as a mode of transport.

The DZSF deals with the central issues of the railway sector as defined in the Federal Rail Research Program and provides solutions for them. Research fields are
 Economic efficiency
 Environment and sustainable Mobility, and
 Safety.
The cross-cutting topics of digitalization, automation, migration, and legal issues are assigned to these three topic areas. These cross-cutting topics complement the integrative approach of the federal research program.

References

External links 
 Internetseite Deutsches Zentrum für Schienenverkehrsforschung
 Bundesforschungsprogramm Schiene vom Juli 2021

2019 establishments in Germany
Research institutes in Germany
Research institutes established in 2019
German federal agencies
Government agencies established in 2019
Rail transport in Germany
Engineering research institutes
Transport education
Pierce Arrow 18. The Pierce Arrow 18, also called the Preston 19, is an American trailerable sailboat that was designed by Mark Leonard as a pocket cruiser and first built in 1982.

Production
The design was initially built by Freedom Yachts, of Rockford, Illinois, United States from 1982 until about 1984. This is not the same company as Freedom Yachts of Rhode Island.

The boat's designer, Mark Leonard, and his brother, Matthew Leonard, built the molds and tooling for the design in Machesney Park, Illinois. Matthew Leonard later purchased a set of parts from Mark Leonard and then built new molds for the design. He established a company, Preston Yachts, in Oak Creek, Wisconsin and built these boats under the name Preston 19, from 1987 until 1990.

Design
The Pierce Arrow 18 is a recreational keelboat, built predominantly of fiberglass. It has a fractional sloop rig, a slightly raked stem, a plumb transom, a transom-hung rudder controlled by a tiller and a retractable daggerboard lifted by a winch. It displaces  and carries  of ballast.

The boat has a draft of  with the daggerboard extended and  with it retracted, allowing operation in shallow water, beaching or ground transportation on a trailer.

The boat is normally fitted with a small  outboard motor for docking and maneuvering.

The design has sleeping accommodation for five people, with a double "V"-berth in the bow cabin, a child-sized settee quarter berth in the main cabin and an aft cabin with a double berth on the starboard side. No galley provisions are fitted. The head is located on the port side of the companionway ladder. Cabin headroom is .

The design has a hull speed of .

Operational history
In a 2010 review Steve Henkel wrote, "the PA18 is unusual in several ways. For one thing, she weighs only 1,100 pounds, ready to sail. Also, with her wide beam, she has a bigger Space Index than any of her comp[etitor]s. For still another thing, she has a heavy (400
pound) daggerboard, which must be mechanically lifted by a winch into a trunk just aft of the mast. Best features: With an SA/D over 25 and thus in the "very high" range, and a D/L nearly in the ultralight category, this should be quite fast in light air. The only other boats in this size range with comparable SA/D and D/L ratios are the Picnic 17 and the Newport 17, but neither of these boats have anywhere near the PA18's 400 pounds of ballast. Worst features: Cranking that heavy daggerboard up and down must be a nuisance, and hitting a rock with the board down is likely to be a cause for alarm, if not of damage to the trunk and hull. We searched the Internet for any trace of information on this boat, or her designer or owners, and found none, R.I.P."

See also
List of sailing boat types

References

Keelboats
1980s sailboat type designs
Sailing yachts
Trailer sailers
Sailboat type designs by Mark Leonard
Sailboat types built by Preston Yachts
David Wyman (sound engineer). David Wyman is an American sound engineer. He was nominated for an Academy Award in the category Best Sound for the film Greyhound.

Selected filmography 
 Greyhound (2020; co-nominated with Warren Shaw, Michael Minkler and Beau Borders)

References

External links 

Living people
Place of birth missing (living people)
Year of birth missing (living people)
American audio engineers
21st-century American engineers
Bromine nitrate. Bromine mononitrate is an inorganic compound, derived from bromine and nitric acid with the chemical formula BrNO3. The compound is a yellow liquid, decomposes at temperatures above 0 °C. 

This compounds is extremely reactive due to its intrinsic instability, which makes handling and synthesis challenging. Because of its explosive potential and corrosive character, this substance is mostly used for study in restricted laboratory settings. About its particular characteristics and uses outside of its use as a chemical research subject, not much is known.

Synthesis
Bromine nitrate can be prepared by several methods:

1. Reaction of silver nitrate on an alcoholic solution of bromine:

2. Reaction of bromine chloride with chlorine nitrate at low temperatures:

Physical properties
Bromine mononitrate forms an unstable yellow liquid that decomposes at temperatures above 0 °C.

The molecule has the structure BrONO2.

The compound is easily soluble in trichlorofluoromethane and carbon tetrachloride.

Applications
Bromine nitrate plays a role in tropospheric chemistry as it reacts with sulfuric acid.

References

Bromine(I) compounds
Nitrates
Tauc–Lorentz model. The Tauc–Lorentz model is a mathematical formula for the frequency dependence of the complex-valued relative permittivity, sometimes referred to as the dielectric function. The model has been used to fit the complex refractive index of amorphous semiconductor materials at frequencies greater than their optical band gap. The dispersion relation bears the names of Jan Tauc and Hendrik Lorentz, whose previous works were combined by G. E. Jellison and F. A. Modine to create the model. The model was inspired, in part, by shortcomings of the Forouhi–Bloomer model, which is aphysical due to its incorrect asymptotic behavior and non-Hermitian character. Despite the inspiration, the Tauc–Lorentz model is itself aphysical due to being non-Hermitian and non-analytic in the upper half-plane.
Further researchers have modified the model to address these shortcomings.

Mathematical formulation 
The general form of the model is given by

where
  is the relative permittivity,
  is the photon energy (related to the angular frequency by ),
  is the value of the relative permittivity at infinite energy,
  is related to the electric susceptibility.

The imaginary component of  is formed as the product of the imaginary component of the Lorentz oscillator model and a model developed by Jan Tauc for the imaginary component of the relative permittivity near the bandgap of a material. The real component of  is obtained via the Kramers-Kronig transform of its imaginary component. Mathematically, they are given by
 
 
where
  is a fitting parameter related to the strength of the Lorentzian oscillator,
  is a fitting parameter related to the broadening of the Lorentzian oscillator,
  is a fitting parameter related to the resonant frequency of the Lorentzian oscillator,
  is a fitting parameter related to the bandgap of the material.

Computing the Kramers-Kronig transform,
 

where
 ,
 ,
 ,
 ,
 .

See also 
 Cauchy equation
 Sellmeier equation
 Lorentz oscillator model
 Forouhi–Bloomer model
 Brendel–Bormann oscillator model

References 

Condensed matter physics
Electric and magnetic fields in matter
Optics
Tungsten trisulfide. Tungsten trisulfide is an inorganic compound of tungsten and sulfur with the chemical formula WS3. The compound looks like chocolate-brown powder.

Synthesis
 Bubbling hydrogen sulfide through hot acidified solution of tungstenates.
 Reaction of tungsten disulfide and elemental sulfur on heating: WS2 + S -> WS3
 Precipitates upon acidification of thiotungstate solutions: (NH4)2WS4 + HCl -> WS3 + 2NH4Cl + H2S Na2WS4 + H2SO4 -> WS3 + Na2SO4 + H2S

Physical properties
Slightly soluble in cold water and forms colloidal solution in hot water. 

Soluble in alkali metal carbonates and alkali metal hydroxides.

Chemical properties
Tungsten trisulfide can be decomposed by heating into tungsten disulfide and elemental sulfur: WS3 -> WS2 + S

Reacts with sulfide solutions: WS3 + (NH4)2S -> (NH4)2WS4

Reduced by hydrogen: WS3 + 3H2 -> W + 3H2S

References

Tungsten compounds
Sulfides
Tracey D. Brown. Tracey D. Brown was the CEO of the American Diabetes Association until October 6, 2021, when she left to become President of Retail Products and Chief Customer Officer at Walgreens.  She is their first CEO to have been diagnosed with type 2 diabetes.  Before becoming CEO in 2018, she was with Sam’s Club as a senior vice president, CEO and managing director of RAPP Dallas and COO for the direct marketing agency Direct Impact.

Education
Brown trained as a chemical engineer and has an MBA from Columbia University.

Publications

References

Columbia Business School alumni
American women chief executives
American chief operating officers
American nonprofit chief executives
American chemical engineers
Women chemical engineers
Year of birth missing (living people)
Living people
21st-century American women
Charles Holtzapffel. Charles Holtzapffel (1806-1847) was a mechanical engineer and technical writer and one of the Holtzapffel dynasty of tool and lathe makers. He wrote a five volume treatise called Turning and Mechanical Manipulation, which is considered a blueprint for ornamental turning, with over 3000 pages and 1600 illustrations. 

Charles was the son of John Jacob Holtzapffel, originally from Alsace who set up a tool-making partnership in Long Acre with Franic Rousset in 1793. 

Charles was educated in England.

Business 
Charles joined his father's firm, Holtzapfell & Co. in 1827. The firm was based at 64, Charing Cross Road, with manufacturing at 127 Long Acre. After his father died in 1835,  Charles continued to run the business. He also invented machinery for printing banknotes, lathes for cutting rosettes, and equipment for tracing shapes on glass and introduced a new system of measures based on the decimal sub-division of the standard inch, as a replacement for  the method of measuring with gauges. A number of lathes and tools made by Charles are held at the Science Museum, London. 

Charles died of liver disease in 1847 at the age of 41.  His obituary was published in the Artizan journal and the Gentleman's magazine. By this time,  Holtzapfell & Co. had sold about 1500 lathes. After his death, his wife Amelia ran the business until 1853 and his son John Jacob II from 1867 to 1896.

Publications 
In 1838 Charles published two books, and in 1827 started writing Turning and Mechanical Manipulation. The first two volumes were published in 1843,and the third published posthumously by Amelia in 1850. The last two volumes were completed after his death by his son, John Jacob II. All 5 volumes are held by the Science Museum, London, There is some evidence to suggest that Francis Ronalds assisted Charles in the early stages of preparing the treatise. Typeset sections survive of an unfinished "Turner's Manual" that Ronalds wrote in 1837 and there is marked similarity in the two prefaces and elsewhere. Ronalds and Charles also collaborated on developing lathe accessories.

Charles also published a number of other books and pamphlets, including one on printing apparatus, which is held by the Wellcome collection.

Professional memberships 
Member of the council of  Institution of Civil Engineers. 

Chairman of the Mechanic's Committee of the Society of Arts.

References 

British engineers
Machine tool builders
Instrument makers
1806 births

1847 deaths
Perikli Teta. Perikli Teta (1941–2007) was an Albanian aircraft engineer and politician who held several ministerial posts in Albania during the tumultuous decade of the 1990s.

Early life and education
Teta was born on August 11, 1941, in Saint-Étienne, France by parents originating from Përmet. He completed his primary education at the 7-year-old school "Ylli i Kuq" in Tirana's suburb of Laprakë. Later he attended the Polytechnic University "7 Nëntori", branching in mechanical engineering. From 1959–1961, he studied aircraft engineering in the Soviet Union.

Career
After briefly interrupting his studies, Teta returned to Albania and began employment as an aircraft technician at the Combat Aviation Regiment in Rinas. From 1968 to 1971 he resumed his studies and attended the Faculty of Mechanical Engineering at the University of Tirana. In 1974, he was appointed as Chief Military Aviation Engineer at the Ministry of Defence, a post he held until 1991.

In 1991, Teta was named Minister of Civil Defence, nominated by the Democratic Party as an independent. He would join the party the following year and was elected member of the parliament for a 4-year term. 
On 13 August 1992, after being expelled from all forums and the DP's parliamentary group, he went on to form his own political party "Aleanca Demokratike".
From 1997–1998, Teta served as Secretary of State for Defence Policy at the Ministry of Defence and was later appointed as Minister of Public Order. He died at a hospital in Ioannina, Greece on January 23, 2007.

References

Government ministers of Albania
Defence ministers of Albania
1941 births
2007 deaths
Politicians from Saint-Étienne
Aeromot AMT-600 Guri. 

The Aeromot AMT-600 Guri is a two-seater light aircraft with a low cantilever wing and fixed tricycle landing gear from Brazil.

Design and development
Derived from the Ximango glider series, this aircraft was ordered in series to replace the Aero Boero AB-115 as the basic training aircraft in Brazilian flying clubs and the first production aircraft left the factory on November 11, 2003.

On February 21, 2004 Aeromot and Guizhou Aircraft Industry Corporation signed an agreement to produce in China a retractable landing gear version of the Guri for the Asian market. This agreement provides for the creation of a subsidiary, Ximango China, and the supply of 20% of the aircraft by Aeromot.

Specifications

References

Notes

Bibliography

Single-engined tractor aircraft
High-wing aircraft
1990s Brazilian civil trainer aircraft
Aircraft first flown in 1999