At the age of 19 she left Haworth and worked as a governess between 1839 and 1845.

At both Choate and Harvard, Lerner was a classmate of John F. Kennedy ; at Choate they had worked together on the yearbook staff.

At the time of his birth, Chaplin's parents were both entertainers in the music hall tradition: Hannah, the daughter of a shoemaker, had a brief and unsuccessful career under the stage name Lily Harley, while Charles Sr., a butcher's son, worked as a popular singer.

At the Survey, he worked mainly in geodesy and gravimetry, refining the use of pendulums to determine small local variations in the Earth's gravity.

At the same time, he worked with geneticist Joshua Lederberg.

At the age of 13, Hopper and his family moved to San Diego, where his mother worked as a lifeguard instructor and his father was a post office manager ( Hopper has acknowledged, though, that his father was in the Office of Strategic Services, the precursor to the Central Intelligence Agency, in China with Mao Zedong ).

At Pennsylvania he worked closely with another student of Boas, Frank Speck and the two undertook work on Catawba in the summer of 1909.

At least 525, 000 people — more than 12 % of El Salvador's population at the time and perhaps 25 % of the rural poor — benefited from agrarian reform, and more than 22 % of El Salvador's total farmland was transferred to those who previously worked the land but did not own it.

At Columbia, Dewey worked with other educators such as Charles Eliot and Abraham Flexner to help bring progressivism into the mainstream of American education.

At about the same time, Eusebius worked on his Chronicle, a universal calendar of events from Creation to Eusebius ' own time.

At age seven, Douglass was separated from his grandmother and moved to the Wye House plantation, where Aaron Anthony worked as overseer.

At one point in the earliest 1940s, approximately half of all the pulp sf and fantasy magazines in the U. S. were being edited by Futurians: Frederik Pohl at the Popular Publications offshoot Fictioneers, Inc. ( Astonishing Stories and Super-Science Stories ); Robert Lowndes at Columbia Publications, most notably with Science Fiction and Future Fiction ( though through the decade to come, Lowndes's responsibilities would expand to other types of fiction magazine in the chain ), and Donald Wollheim at the very marginal Albing Publications with the short-lived, micro-budgeted Cosmic Stories and Stirring Science Stories ( Wollheim soon moved on to Avon Books ; Doë " Leslie Perri " Baumgardt also worked on a romance fiction title for Albing ).

At Wallington he worked on " England Your England " and in London wrote reviews for various periodicals.

At this time, he worked up dance routines with his younger brother Fred in order to earn prize money in local talent contests, and they also performed in local nightclubs.

At the age of seven she decided to determine how an alarm clock worked.

At first the two men worked well together, but two weeks into filming Lubitsch began arriving on the set on a regular basis, and he soon began directing scenes with Cukor's consent.

At the start of the Second World War, he returned to South Africa and worked as a journalist.

At first the phases were controlled by hand, but within ten years an escapement mechanism had been devised worked by a vertical plug tree suspended from the rocking beam which rendered the engine self-acting.

At first he worked on maintaining and repairing scientific instruments used in the university, helping with demonstrations, and expanding the production of quadrants.

At specific points indicated by the pattern, the cable needle is moved, the stitches on it are worked by the other needles, then the cable needle is turned around to a different position to create the cable twist.

At that time, it was the only working computer in continental Europe, and the second computer in the world to be sold, only beaten by the BINAC, which never worked properly after it was delivered.

At his death twenty thousand people worked for Krupp — making it the world's largest industrial company and the largest private company in the German empire.

At that time, he also worked as a typeface designer and for the world. std. com internet service provider.

At first he wrote leaflets for an underground printing press in Kiev, but soon moved to the capital, Saint Petersburg, where he worked with both Bolsheviks, such as Central Committee member Leonid Krasin, and the local Menshevik committee, which he pushed in a more radical direction.

At age two, the family moved to Toronto, Canada where her father worked at the Norwegian air force base on Toronto Island during World War II.

At the same instant, he grabbed the loose, writhing hose with his other hand and bit down on the hard rubber mouthpiece.

At best, the technique is only effective at extremely close ranges of five to ten feet, since the recoil would make it hard to keep both weapons straight, and using the sights on the guns is next to impossible.

Washington was hard to miss: At exactly six feet, he towered over most of his contemporaries.

At the prompting of team leader Cyclops, Drake learns to cover his body with hardened-but-flexible ice and adopts the hard crystalline appearance familiar to modern readers.

At those times when John was preparing for campaigns in Normandy, for example, huge quantities of silver had to be withdrawn from the economy and stored for months, which unintentionally resulted in periods during which silver coins were simply hard to come by, commercial credit difficult to acquire and deflationary pressure placed on the economy.

At the same time, however, Nazarbayev fought hard to secure republic control of Kazakhstan's enormous mineral wealth and industrial potential.

At the age of 9, Konstantin caught scarlet fever and became hard of hearing.

At first, disk space on a server was hard to come by, so networks of mirror sites like Info-Mac, containing large shareware libraries were developed, accessible via the web or ftp.

At the other, extreme end of the spectrum is fantastic-tech equipment that is hard for the typical person to comprehend ; this includes artifacts left over from extinct cultures as well as the product of current, highly advanced cultures.

At various times in their film relationship, " he more than once swore off Sellers ," as too hard to direct.

At three hundred pounds, Whiteman was huge both physically and culturally —" a man flabby, virile, quick, coarse, untidy and sleek, with a hard core of shrewdness in an envelope of sentimentalism ," according to a 1926 New Yorker profile.

At least one company makes a hard wax that is intended for use on dry slopes.

; NP-hard: At least as hard as the hardest problems in NP.

; NP-easy: At most as hard as NP, but not necessarily in NP, since they may not be decision problems.

At his funeral the coffin was carried to the grave by former students who had received the bursaries for which he had worked so hard, it was they who subscribed for the monument over his grave, severely simple as he would have desired.

At times these requirements were hard to meet, especially during years of drought, or when the much anticipated shipments from the port of San Blas failed to arrive.

At an interview in October, 2000, Brin said, " I know the hard times that my parents went through there, and am very thankful that I was brought to the States.

At the Collège des Godrans, he gained a reputation for hard work: fellow students nicknamed him Bos suetus aratro, an " ox broken in to the plough ".

At a time when law and order was breaking down in France and the government was having a hard time raising money for the defence of the realm, his account books during his captivity show that he was purchasing horses, pets, and clothes while maintaining an astrologer and a court band.

At the same time, Wayne's blossoming relationship with hard rock vocalist and bassist Cassandra ( Tia Carrere ), the frontwoman of a band named Crucial Taunt, leads to a rift forming between Wayne and Garth.

At the farm, the three former milkmaids perform very hard physical labour.

At intervals the timpani create a sound reminiscent of a ship's engines by means of hard sticks, or, traditionally, coins.

At the first meeting of the new Standing Committee of the Politburo, after the Tiananmen Square massacre of 1989, Jiang criticized the previous period as " hard on the economy, soft on politics " and advocated increasing political thought work.

At the time, California and federal land surveyors declared the sand dunes uninhabitable, only the hard rock ground of the " Marshall Cove " held potential farming and residential development.