After many years of the infinitesimal approach to calculus having fallen into disuse other than as an introductory pedagogical tool, use of infinitesimal quantities was finally given a rigorous foundation by Abraham Robinson in the 1960s.

After the relational model was defined, there were many attempts to compare and contrast the different models, and this led to the emergence of more rigorous descriptions of the earlier models ; though the procedural nature of the data manipulation interfaces for hierarchical and network databases limited the scope for formalization.

After a rigorous approach including several hundred feet of granite stairs, the final pitch up the peak's steep but somewhat rounded east face is ascended with the aid of a pair of post-mounted braided steel cables originally constructed close to the Anderson route in 1919.

After Cornelius ’ s appointment to the papacy, Novatian became more rigorous in his philosophy, convinced that bishops could not pardon the worst of sins, and that such sins could only be reconciled at the Last Judgment.

After a few months he left, finding monastic life too rigorous.

After rigorous trainings, they began performing as opening acts for established R & B groups of that time such as SWV, Dru Hill and Immature.

After releasing the home-recorded EP, It's All About the Girls in 1997, the band were able to build a cult following after a rigorous touring schedule of the East Coast and the release of debut album Nothing Gold Can Stay ( 1999 ).

After World War II, a number of new management consulting firms formed, bringing a rigorous analytical approach to the study of management and strategy.

After the record was completed, the band started a rigorous tour cycle that took them all over the US and Canada.

After years of rigorous spiritual training he became the Mahanta, the Living ECK Master in 1981.

After surge from a cyclone has receded, teams of surveyors map high water marks ( HWM ) on land, in a rigorous and detailed process that includes photos and written descriptions of the marks.

After these surgeries, Longworth's health was not as good as it once had been, but she continued a rigorous schedule and maintained her social rounds.

After discovering that Cole does not understand the common terminology used by NASCAR teams, Harry puts him in a series of rigorous training.

After the foundation of BFU, in 1952, a number of distinguished experts and professors from Peking University, Tsinghua University and Beijing Agriculture University were transferred to BFU, which has inherited their rigorous style and discipline in academic pursuits.

After rigorous screening and examination, a small number are chosen to receive a technical education in criminology at a police college.

After World War II, the founding of the UN system provided a further stimulus for more rigorous approaches to peace and conflict studies to emerge.

After setting off from the Reform Club in London, he boards the Orient Express at Victoria Station in London, while reminiscing on his rigorous preparations for his upcoming circumnavigation, which included a daily exercise programme, a chat with seasoned TV traveller Alan Whicker, and the purchase of an inflatable globe.

After a robust and rigorous campaign with support from thousands including Kevin Spacey, Ken Loach, Michael Bogdanov and Richard Wilson, the Morley Drama Department was saved.

After three months of research, I can state unequivocally that Los Angeles drivers are considerably more courteous and competent than any other drivers I've ever encountered.

After 25 years of parapsychological research, Susan Blackmore came to the conclusion that there is no empirical evidence for an afterlife.

After this essay was circulated in samizdat and then published outside the Soviet Union ( initially on July 6, 1968, in the Dutch newspaper Het Parool through intermediary of the Dutch academic and writer Karel van het Reve, followed by The New York Times ), Sakharov was banned from all military-related research and returned to FIAN to study fundamental theoretical physics.

After their losses in the Solomons, Gilberts, Marshalls and Marianas, the Imperial Army assembled a research team to develop a new island defense strategy.

After several years of research and concern, a team of scientists headed by Jerry Bromenshenk published a paper in October 2010 saying that a new DNA-based virus, invertebrate iridescent virus or IIV6, and the fungus Nosema ceranae were found in every killed colony the group studied.

After World War II, with the arrival of electronics for reading chords and looking in tables of " codes ", the postal sorting offices started to research chordic solutions to be able to employ people other than trained and expensive typists.

After 1945, new research on Korean dolmen was conducted mostly by Korean scholars.

* After Runyon's death, his friend and fellow journalist, Walter Winchell, went on his radio program and appealed for contributions to help fight cancer, eventually establishing the “ Damon Runyon Cancer Memorial Fund ” to support scientific research into causes of, and prevention of cancer.

After Mayr was appointed at the American Museum of Natural History, he influenced American ornithological research by mentoring young birdwatchers.

After his death, Husserl's manuscripts, amounting to approximately 40, 000 pages of " Gabelsberger " stenography and his complete research library, were in 1939 smuggled to Belgium by the Franciscan priest Herman Van Breda.

After leaving Winchester he joined the operational research section at RAF Bomber Command, where he remained for the rest of World War II.

After his retirement from engineering, Eiffel concentrated his energies on research into meteorology and aerodynamics, making important contributions in both fields.

After enrolling in a course on " Measuring Municipal Governments ," Simon was invited to be a research assistant for Clarence Ridley, with whom he coauthored the book Measuring Municipal Activities in 1938.

After two years of study and research, its final report was published in the British Medical Journal ( BMJ ), under the title ‘ Medical use of Hypnotism ’.

After examining the long history of empirical research, Bowen, Hollander and Viane concluded: " Recent tests of the factor abundance theory theory and its developed form into many-commodity and many-factor case that directly examine the H-O-V equations also indicate the rejection of the theory.

* 1933 – After successfully crossing the Atlantic Ocean, the Lithuanian research aircraft Lituanica crashes in Europe under mysterious circumstances.

After graduating he became a lecturer in Zoology at UCL between 1952 and 1965, where he directed the Drosophila lab and conducted research on population genetics.

After obtaining his Ph D, he was a research fellow at Trinity College, Cambridge and then from 1954 a lecturer in the mathematics faculty at Cambridge.

After hearing a lecture on the subject of Lovelock's results, they embarked on research that resulted in the first published paper that suggested a link between stratospheric CFCs and ozone depletion in 1974, and later shared the 1995 Nobel Prize in Chemistry ( with Paul Crutzen ) for their work.

After World War II work on the synthesis of liquid crystals was restarted at university research laboratories in Europe.

After further research he later extended this idea to humans, which became to be known as his theory of polygenism.

After 750 CE, the Muslim world had the works of Hippocrates, Galen and Sushruta translated into Arabic, and Islamic physicians engaged in some significant medical research.

Coupland's research turned up links to the themes of Life After God.

After being granted a small research fund at Martin Marietta, Zubrin and his colleagues successfully demonstrated an in-situ propellant generator which achieved an efficiency of 94 %.

After completing his MBA, he joined Drexel ( by then known as Drexel Firestone ) as director of low-grade bond research.