During the 1970s and 1990s, there was an epistemological shift away from the positivist traditions that had largely informed the discipline.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the 1960s and 1970s, the city gained a reputation as a center for liberal politics.

During the 1960s and 1970s, the city gained a reputation as an important center for liberal politics.

During much of the 1970s Roma's appearance in the top half of Serie A was sporadic.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

During the 1970s the Air Force was at the apogee of its power, possessing at least 500 modern combat aircraft in its inventory.

During the early 1970s, Manchester United were no longer competing among the top teams in England, and at several stages were battling against relegation.

During the Orioles ' heyday in the 1970s, a club song, appropriately titled " Orioles Magic ", was composed, and played when the team ran out until Opening Day of 2008.

During the late 1970s and early 1980s, the site hosted Creative Time's landmark Art on the Beach sculpture exhibitions.

During the 1970s, he made guest-appearances on TV series such as Ironside, Insight, Barbary Coast, The Love Boat, Medical Center, four episodes of Love, American Style, Fantasy Island, and two episodes each of The Streets of San Francisco, and Rod Serling's Night Gallery.

" During the 1970s, widely different methods began to be seen as part of a new emerging discipline of computational chemistry.

During the 1970s the " small press " culture grew and diversified.

During the 1970s and 1980s it was also used to test the ability of containers of radioactive material to withstand impacts and other accidents.

During the 1970s and 1980s, the Bengals were a perennial playoff contender and they won AFC championships in and, but lost Super Bowls XVI and XXIII to the San Francisco 49ers.

During the 1960s and 1970s, the CPC experienced a significant ideological breakdown with the Communist Party of the Soviet Union under Nikita Khrushchev, and later, Leonid Brezhnev.

During the 1970s the relative number of communists in Republics of the Soviet Union was as follows:

During the 1970s, a growing number of Canadian stations pushed American channels off the systems, forcing several to expand beyond the original 12-channel system configurations.

During the 1970s producers started to reduce the quantity of white grapes in Chianti.

During the 1970s, modern dramatic directors made some of their first films.

During the Portuguese Colonial War in the 1960s and the 1970s, the Portuguese Army created an experimental horse platoon, to combat the guerrillas in eastern Angola.

During the late 1970s he acquired a large public audience as a critic of the then Labour government's disregard of civil liberties ; his writings from this time are collected in Writing By Candlelight ( 1980 ).

During the 1950s, 1960s and 1970s, several events occurred which raised the public awareness of harm to the environment caused by man.

During the 1960s and 1970s hundreds of fossils were found, particularly in East Africa in the regions of the Olduvai gorge and Lake Turkana.

During the 1970s and ' 80s, Cassandra B. Whyte did significant educational research studying locus of control as related to the academic achievement of students pursuing higher education coursework.

During this period, he pioneered the policy of détente with the Soviet Union, orchestrated the opening of relations with the People's Republic of China, and negotiated the Paris Peace Accords, ending American involvement in the Vietnam War.

During his time, Jahangir also pioneered several ornate genealogies illustrated with portraits of each family member in the style of Italian Renaissance painters.

During the 1920s, the experiments pioneered by Michelson were repeated by Dayton Miller, who publicly proclaimed positive results on several occasions, although not large enough to be consistent with any known aether theory.

During Queen Victoria's widowhood, Edward pioneered the idea of royal public appearances as we understand them today — for example, opening Thames Embankment in 1871, Mersey Tunnel in 1886, and Tower Bridge in 1894.

During this time he pioneered the field of matte photography and made use of innovative lighting techniques, closeups, and iris shots.

During the 1930s the Good brothers Bill and Walt pioneered vacuum tube based control units for R / C hobby use.

During the Coventry Blitz the Germans pioneered several innovations which were to influence all future strategic bomber raids during the war.

During this expedition, Beebe was also amazed to discover the number and variety of organisms living under a single tree, and pioneered the method of studying a small area of wilderness for an extended amount of time.

During the war Raytheon also pioneered the production of shipboard radar systems, particularly for submarine detection.

During the inter-war years, aircraft underwent an evolution and the all metal monoplane, pioneered as far back as the end of 1915, replaced wood and fabric biplanes.

During those years he also pioneered work on buckling, and published the first version of his famous Strength of materials textbook.

During the expansion, the MBTA pioneered an investment in the " Arts on the Line " public art program.

During this period, the National Party government continued to foster the development of a military industrial complex, that successfully pioneered developments in native armaments manufacturing, including aircraft, small arms, armoured vehicles, and even nuclear and biological weapons.

During this time Black pioneered a method of research whereby drug molecules were purposefully built instead of being synthesised first and then investigated for their potential medical uses.

During these operations the Australian ships pioneered a number of techniques that increased the effectiveness of Maritime Interception Force operations leading to them intercepting and boarding about 1700 vessels during the period.

During the 1970s, Tancredo pioneered opposition to bilingual education, an issue that would remain a feature of his political orientation.

During the war, German engineer Hugo Junkers pioneered practical all-metal airframes as early as late 1915 with the Junkers J 1, whose techniques were adopted almost unchanged after the war by both American engineer William Bushnell Stout and Soviet aerospace engineer Andrei Tupolev.

During the mid 20th century, RMIT pioneered dual sector education in Australia.

During this time the company also pioneered manufacturing technology that accompanied new state of the art developments.

During the 1970s, LexisNexis pioneered the electronic accessibility of legal and journalistic documents.

During the early sixties, BBC Birmingham pioneered television programmes, for the Asian community.

During the early sixties, BBC Birmingham pioneered television programmes, for the Asian community.

During the war, Ahmed pioneered the use of cannons supplied by the Ottoman Empire, which were deployed against Solomonic forces and their Portuguese allies led by Cristóvão da Gama.

During this period, Menon pioneered a novel foreign policy for India, which he dubbed non-alignment in 1952, charting a third course between the USA and USSR.