Samantha912/NLP_A2_WTH huggingface dataset:
In mathematics Nef polygons and Nef polyhedra are the sets of polygons and polyhedra which can be obtained from a finite set of halfplanes (halfspaces) by Boolean operations of set intersection and set complement. The objects are named after the Swiss mathematician Walter Nef (1919–2013), who introduced them in his 1978 book on polyhedra.

Since other Boolean operations, such as union or difference, may be expressed via intersection and complement operations, the sets of Nef polygons (polyhedra) are closed with respect to these operations as well.

In addition, the class of Nef polyhedra is closed with respect to the topological operations of taking closure, interior, exterior, and boundary. Boolean operations, such as difference or intersection, may produce non-regular sets. However the class of Nef polyhedra is also closed with respect to the operation of regularization.

Convex polytopes are a special subclass of Nef polyhedra, being the set of polyhedra which are the intersections of a finite set of half-planes.

Terminology

In the language of Nef polyhedra you can refer to various objects as 'faces' with different dimensions. What would normally be called a 'corner' or 'vertex' of a shape is called a 'face' with dimension of 0. An 'edge' or 'segment' is a face with dimension 1. A flat shape in 3D space, like a triangle, is called a face with dimension 2 – or a 'facet'. A shape in 3D space, like a cube, is called a face with dimension 3 – or a 'volume'.

Implementations

The Computational Geometry Algorithms Library, or CGAL, represents Nef Polyhedra by using two main data structures. The first is a 'Sphere map' and the second is a 'Selective Nef Complex' (or SNC). The 'sphere map' stores information about the polyhedron by creating an imaginary sphere around each vertex, and painting it with various points and lines representing how the polyhedron divides space. The SNC basically stores and organizes the sphere maps. Each face contains a 'label' or 'mark' telling whether it is part of the object or not.

See also 
CGAL

References

Types of polygons
Polyhedra
"The Rabbits who caused all the Trouble" is a short modern fable written by James Thurber. It first appeared in The New Yorker on August 26, 1939; and was first collected in his book Fables for Our Time and Famous Poems Illustrated (Harper and Brothers, 1940). The fable has since been reprinted in The Thurber Carnival (Harper and Brothers, 1945), James Thurber: Writings and Drawings (The Library of America, 1996, ), The Oxford Book of Modern Fairy Tales, and other publications. The story is often used in classes that teach English as a second language.

Main characters
The characters in the fable are all animals. There are a family of rabbits who have a pack of wolves living near them. Then there are other nameless animals who do not play an active role in the story.

Plot summary
The wolves believe that their way of life is the only way to live, and therefore they dislike the rabbits. After an earthquake occurs the wolves incriminate the rabbits because "it is well known that rabbits pound on the ground with their hind legs and cause earthquakes". The wolves also blame the rabbits for a lightning strike that kills one of the wolves because "it is well known that lettuce-eaters cause lightning". After the wolves announce plans "to civilize" the rabbits if they don't stop causing natural disasters, the rabbits decide to flee to an island. However, the other nameless animals - living out of harm's way - convince the rabbits to stay because "This is no world for escapists" and guarantee them protection against the wolves -"in all probability".

After a flood - "it is well known that carrot-nibblers with long ears cause floods" - the wolves decide to imprison the rabbits, "for their own good". Weeks later the other animals notice the absence of the rabbits and ask the wolves about them. The wolves answer that it is "a purely internal matter" (because they ate the rabbits). The wolves also claim the rabbits were trying to escape "and, as you know, this is no world for escapists".

Major themes
The short story alludes to events that occurred around the time period of the Second World War. The rabbits represent the minorities who were persecuted like the Jews in Nazi Germany. The wolves represent the majority who display an irrational prejudice and hatred towards the minority, the rabbits. As events unfold, the rest of the animals represent all the other nations of the world who were mute spectators as events unfolded leading to the holocaust.

Popular culture
The story was read aloud by Television Broadcaster Keith Olbermann in one of the segments of his MSNBC program Countdown with Keith Olbermann on Fridays, which he called "Fridays with Thurber."  He did this on the suggestion of his dying father Theodore, to whom he read many of the stories in his hospital bed. On April 9, 2010, Olbermann read aloud the story "The Rabbits Who Caused All the Trouble".

References

External links
Complete text of the story

1939 short stories
Works originally published in The New Yorker
Works by James Thurber
The Slingsby T.53 was the first all-metal sailplane designed and built in the United Kingdom. It was designed and built by Slingsby Sailplanes for evaluation by the Royal Air Force.

Design and development
In the early 1960s the RAF issued a requirement to replace the current wooden gliders used by the Air Training Corps with a new tandem two-seater. Slingsby took the opportunity to design a new glider that would meet the needs of the ATC and could be used by civil gliding clubs. Slingsby decided to make the glider in metal, which would make it more marketable in areas like the United States and Australia where the traditional wooden gliders did not sell well. The glider would also be lighter and the labour costs would be less, although the cost of tooling would be higher. To gain experience the company purchased a kit of the Schweizer 2-22, which was then constructed to learn the techniques applicable to metal gliders.

The construction of the prototype was started in June 1966, with the first flight on 9 March 1967 at Wombleton. The T.53 is constructed using a conventional light alloy flush-riveted design. To ensure the rear occupant is forward of the wing leading edge, the shoulder-mounted wing is swept forwards by 5 degrees. It has a high-mounted stabiliser.

The Royal Air Force ordered 40 gliders, and the second T.53 was evaluated by them for use by the Air Training Corps. The order was cancelled following evaluation and the disruption caused when the Slingsby factory was destroyed by fire in November 1968. Following the fire, Slingsby built a small batch of modified T.53B aircraft, the Phoenix, for the civil market, and later sold the rights of the design to Yorkshire Sailplanes which then resumed production as the Yorkshire Sailplanes YS-53 Sovereign.

Variants
T.52
A preliminary design study of an all-metal two-seater, superseded by the T.53.
T.53A
prototype with flaps on wings, one built.
T.53B
updated with two fixed tandem wheels and a swept-forward flapless wing of constant chord, 20 built.
T.53C
Production variant for the RAF, not built.
Yorkshire Sailplanes YS-53 Sovereign
Production resumed after Yorkshire Sailplanes acquired the rights to the T.53 Phoenix.

Specification (T.53B)

See also

References

Bibliography

1960s British sailplanes
Glider aircraft
T.53
Aircraft first flown in 1967
Mid-wing aircraft
Zhang Sizhi (; 12 November 1927 – 24 June 2022) was an active rights lawyer in China, and a professor at Central University of Finance and Economics. He was known as "The lawyer's conscience".

Biography 
Zhang was born as the eldest of 10 children to Zhang Jingtang and Meng Yanrong on November 12, 1927 in Zhengzhou. His father was a doctor who practiced Chinese traditional medicine. In 1944, at the age of 16, he joined the Chinese Expeditionary Force. Three years later, he was admitted to Chaoyang university. After graduating from university, he became a judge. In 1950, he graduated from the People's University of China. During the Anti-Rightist Movement, he was divided into right, was sentenced to 15 years in a village. In 1972, he was free to act as a teacher. In July 1979, Zhang returned as a lawyer and participated in the trials of "Lin Biao Anti-Revolutionary Group Case" and "Jiang Qing Anti-Revolutionary Group Case", commonly known as the "Two Cases", serving as defense lawyers for Jiang Qing and others. After the 1989 Tiananmen Square protests and massacre, he defended liberals such as Bao Tong, Wang Juntao, Gao Yu and Pu Zhiqiang, as well as rights lawyers.

On 24 June 2022, he died from cancer in Beijing, at the age of 94.

Awards 
 2008 Petra Kelly Prize by Heinrich-Böll-Stiftung for his outstanding contributions to the protection of human rights and the construction of a legal state and lawyer system in China.

See also
Weiquan movement

References

1927 births
2022 deaths
Independent politicians in the People's Republic of China
Academic staff of the Central University of Finance and Economics
Renmin University of China alumni
Charter 08 signatories
Chinese human rights activists
Chinese dissidents
Weiquan movement
People from Zhengzhou
Tez was a mobile payments service by Google, targeted at users in India, later folded into the new Google Pay app on 28 August 2018. It operated atop the Unified Payments Interface, developed by the National Payments Corporation of India.

Tez worked on the vast majority of India's smartphones (with apps for both Android and iOS) with the Android app supporting English, Hindi, Tamil, Bengali, Gujarati, Kannada, Marathi, and Telugu. There were plans to release the app in other emerging countries including Vietnam, Indonesia, and Thailand. "Tez" is the Hindi word for "Fast". Within 37 days after being launched, Tez got about 8.5 million installations. Over 30 million transactions were made on the app as of 27 October 2017.

Service

Acceptability
Tez was accepted by PVR Cinemas, redBus, McDonald's, ACT Broadband, State government Electricity boards and was expected to be joined by a number of other businesses like Dish TV, Jet Airways and Domino's, Vodafone Idea, Swiggy, Zomato, Uber, Ola, Clubfactory, Zappfresh, Amazon, Flipkart and many more businesses. Google was also working with existing advertisers and online e-commerce platforms like Shopify and payment aggregators like BillDesk and PayU. Google planned to add even more ways to pay on Tez (e.g., credit cards and wallets). Select phones from manufacturer partners Lava, Nokia Mobile, and Panasonic would have come with Tez preinstalled.

Device compatibility
The app was compatible with the vast majority of Android and iOS devices.

Technology
The application did not require users to share any personal information such as mobile numbers or usernames like other payment applications. Instead, it used audio QR codes that relied on sound transmitted at a frequency inaudible to the human ear from the payee handset to the merchant handset. This technology does away with the need for NFC chips on the handsets, which gave it an advantage since a significant number of smartphones in India and other developing markets do not have NFC chips embedded. This was indeed a technology ahead of its time.

References 

Discontinued Google services
Payment and settlement systems in India
Android (operating system) software
Mobile payments
The Hillsdale Public Schools is a community public school district that serves students in pre-kindergarten through eighth grade in Hillsdale, in Bergen County, New Jersey, United States.

As of the 2018–19 school year, the district, comprising three schools, had an enrollment of 1,147 students and 117.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 9.8:1.

The district is classified by the New Jersey Department of Education as being in District Factor Group "GH", the third-highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J.

Public school students in ninth through twelfth grades attend Pascack Valley High School along with students from neighboring River Vale. The school is part of the Pascack Valley Regional High School District, which also serves students from Montvale and Woodcliff Lake at Pascack Hills High School. During the 1994-96 school years, Northern Valley Regional High School at Demarest was awarded the Blue Ribbon School Award of Excellence by the United States Department of Education. As of the 2018–19 school year, the high school had an enrollment of 1,209 students and 92.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.1:1.

Schools 
Schools in the district (with 2018–19 enrollment data from the National Center for Education Statistics) are:
Elementary schools
Ann Blanche Smith School with 317 students in Kindergarten through 4th grade
Angela Iskenderian, principal
Meadowbrook Elementary School with 291 students in grades Pre-K-4
Christopher R. Bell, principal
Middle school
George G. White Middle School with 531 students in grades 5-8
Donald Bergamini, principal

Administration 
Core members of the district's administration are:
Dr. Robert V. Lombardy Jr., superintendent of schools
Sacha Pouliot, business administrator and board secretary

Board of education
The district's board of education, with five members, sets policy and oversees the fiscal and educational operation of the district through its administration. As a Type II school district, the board's trustees are elected directly by voters to serve three-year terms of office on a staggered basis, with one to two seats up for election each year held (since 2012) as part of the November general election. The board appoints a superintendent to oversee the day-to-day operation of the district.

References

External links 

School Data for the Hillsdale Public Schools, National Center for Education Statisticsa district of schools
Pascack Valley High School

Hillsdale, New Jersey
New Jersey District Factor Group GH
School districts in Bergen County, New Jersey
Law Speed is the first album by French/Italian post-rock band Permanent Fatal Error, a project by Olivier Manchion, founder member of the band Ulan Bator. The album was recorded in Italy at URS studio (Villa Minozzo, Emilia-Romagna).

Track listing

"|||"  – 0:06
"A Pic"  – 3:59
"Nord"  – 3:24
"BLU"  – 5:18
"B#Side <part1"  – 2:23
"B#Side _part2_"  – 4:24
"B#Side part3>"  – 2:13
"Low.Law.Speed  – 9:58
"Sunflowers"  – 5:39
"Deaf.Blues"  – 0:44
"Treep"  – 5:29

Musicians 

Olivier Manchion : acoustic-guitar, bass, loops, slide, bass-organ, e, voice
Giulio C. Vetrone : snake-guitar, wave-guitar, bell-guitar, triangle, voice
Nicolas Marmin : bass, electronics, distorgan, voice
Francesco Billét : drums, egg, bell, 123

Guested musicians

Massimo Guidetti: Trumpet (B#Side _part2_)
Bi: Vocals (B#Side _part2_)

About "Law Speed" 

 source: http://2006.avantgardefestival.de/

 source: http://www.rermegacorp.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=Wallace40&Category_Code=&Store_Code=RM

2004 albums
Kim Sun-kyu (born 7 October 1987) is a South Korean football player, who currently plays for K League Challenge side FC Anyang.

He led Dong-A University to win a University Tournament.

References

External links
 

1987 births
Gyeongnam FC players
Daejeon Hana Citizen players
FC Anyang players
K League 1 players
K League 2 players
Living people
South Korean men's footballers
People from Yangsan
Men's association football goalkeepers
Footballers from South Gyeongsang Province
Christopher Middleton  ( – 12 February 1770) was a British navigator with the Hudson's Bay Company and Royal Navy officer. He was elected a Fellow of the Royal Society on 7 April 1737.

Career

Privateer in Queen Anne's War 
Middleton described serving aboard a privateer in Queen Anne's War. The war was fought between 1701 and 1713.

Hudson's Bay Company service
Middleton was appointed second mate of the Hannah, in 1721, and appointed her captain in 1725. He eventually made 16 annual voyages on ships supplying Hudson Bay Company outposts.

Middleton was a scientific sailor, and he methodically observed compass deviations, on his voyages. Hudson's Bay was close to the location of the North Magnetic Pole. Middleton published a paper, describing his observations, in the Royal Society's Philosophical Transactions. Middleton's scientific endeavours earned him a Fellowship in the Royal Society.

Northwest Passage 

<mapframe
text="Middleton's Northwest Passage expedition established Wager Bay was just a deep bay, not an outlet to the Pacific Ocean"
width=242
height=180
zoom=6
latitude=65.5
longitude=-89/>

On 5 March 1741, Middleton was appointed to the command of , a Royal Navy bomb vessel which was refitted at Deptford Dockyard and rigged as a three-masted ship. In May, he left England on Furnace, accompanied by a smaller vessel, the purchased , under the command of William Moor, and sailed to Hudson Bay in search of a Northwest Passage.

He spent the winter at Fort Churchill, and then proceeded north, into Roes Welcome Sound and discovered Wager Inlet where he was iced in for three weeks. At the head of the sound he found himself blocked by ice, and named the place Repulse Bay.

Middleton returned to England in 1742, where he was presented with the Royal Society's Copley Medal, to whom he presented a paper entitled "The effects of cold; together with observations of the longitude, latitude, and declination of the magnetic needle, at Prince of Wales's fort, upon Churchill-River in Hudson's Bay, North America".

Middleton was given command of , in May 1745, and commanded her until 1748, when peace was negotiated with Spain. Royal Navy officers were entitled to half-pay when not employed, and Middleton spent the rest of his life on half-pay. He went back to the Hudson's Bay Company and requested a command, without success.

See also 
 Arthur Dobbs

References

Footnotes

Bibliography

External links 
 
 "Christopher Middleton, North-West Passage expedition, 1741–42" at Royal Museums Greenwich

18th-century English people
18th-century Royal Navy personnel
1690s births
1770 deaths
Date of birth uncertain
English explorers of North America
English navigators
English polar explorers
Explorers of Canada
Explorers of the Arctic
Fellows of the Royal Society
Hudson's Bay Company people
People from the Borough of Hartlepool
Recipients of the Copley Medal
Royal Navy officers
Oleksiy Ruslanovych Krasovsky (; born 30 March 1994 in Rokytne, Rivne Oblast, Ukraine) is a cross-country skier from Ukraine. He represented Ukraine at the 2014 and 2018 Winter Olympics.

Career
Krasovsky took up skiing in Shostka, where his parents worked in a youth sport school after moving there when he was very young. His parents were his first trainers. Viktor Shamrai and Valerii Liesnikov also trained him.

Krasovsky started his career at major competitions in February 2012 when he competed at the 2012 Winter Youth Olympics in Innsbruck. He was 14th in mixed relay, 20th in 10km classical race, and 25th in sprint competition.

At World Cup, Krasovsky debuted on 29 November 2014 in Ruka, Finland, where he was 80th in sprint competition. As of January 2022, his best World Cup achievement was 58th rank in sprint freestyle in Dresden on 19 December 2020. His best team performance (together with Dmytro Drahun) was 22nd in team sprint on 20 December 2020 in Dresden.

Olympic debut occurred at the 2014 Winter Games in Russian Sochi. There he was 69th in 15km classical race and 81st in sprint competitions.

At his second Winter Olympics in 2018, Krasovsky participated in almost all competitions except the men's relay. He improved his performance a little compared to the previous Games, achieving 50th rank in the 50 km classical style mass start.

In 2022, Krasovsky was nominated for his third Winter Games in Beijing.

Krasovsky participated at four World Championships: in 2013, 2015, 2017, and 2019. His best personal performance was 49th in skiathlon in 2015. He also took part in three Universiades (2013, 2015, 2017), with his best personal result being 6th in 30 km classical mass start in 2017.

Cross-country skiing results
All results are sourced from the International Ski Federation (FIS).

Olympic Games

Distance reduced to 30 km due to weather conditions.

World Championships

World Cup

Season standings

Personal life
He now lives and trains in Shostka, Sumy Oblast. He studied energy management at the Sumy State University.

References

External links

1994 births
Living people
Ukrainian male cross-country skiers
Cross-country skiers at the 2014 Winter Olympics
Cross-country skiers at the 2018 Winter Olympics
Cross-country skiers at the 2022 Winter Olympics
Olympic cross-country skiers for Ukraine
Cross-country skiers at the 2012 Winter Youth Olympics
Competitors at the 2013 Winter Universiade
Competitors at the 2015 Winter Universiade
Competitors at the 2017 Winter Universiade
Sumy State University alumni
Sportspeople from Sumy Oblast
Kseniya Stankevich (born 28 January 1996) is a Belarusian freestyle wrestler. She is a two-time bronze medalist in the women's 50 kg event at the European Wrestling Championships.

Career 

Stankevich won one of the bronze medals in the women's 44 kg event at the 2015 World Junior Wrestling Championships held in Salvador da Bahia, Brazil.

At the 2020 European Wrestling Championships held in Rome, Italy, she won one of the bronze medals in the women's 50 kg event. She also won one of the bronze medals in the women's 50 kg event at the 2019 European Wrestling Championships held in Bucharest, Romania.

In 2019, at the Military World Games held in Wuhan, China, she won one of the bronze medals in the women's 50 kg event.

In 2022, Stankevich competed in the 50 kg event at the Yasar Dogu Tournament held in Istanbul, Turkey.

Achievements

References

External links 

 

Living people
1996 births
Place of birth missing (living people)
Belarusian female sport wrestlers
European Wrestling Championships medalists
21st-century Belarusian women