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 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 year the Navy and Air Force agreed on standardized naming conventions for their missiles.

During the Second World War nearby Thorney Island was used as a Royal Air Force base, playing a role in the Battle of Britain.

During the Second World War, the Royal Air Force built a radar station on top of Ward Hill during the battle of the Atlantic.

During the ceremony, he switched his Blues and Royals ' Officer's Service Dress cap for that of the Army Air Corps ' sky blue beret with a Blues and Royals badge.

During their marriage, several of Grammer and Donatacci's homes were featured in magazines, including ones in: Malibu, California ( February 2001, InStyle ), Maui ( May 2004, InStyle ), Long Island, New York ( April 2008, InStyle ), Bachelor Gulch, Colorado ( Architectural Digest ), and Bel Air, Los Angeles ( Architectural Digest ).

During the Cold War, Naval Air Station Keflavik played an important role in monitoring marine and submarine traffic from the Norwegian and Greenland Seas into the Atlantic Ocean.

During World War II, Lübeck was the first German city to be attacked in substantial numbers by the Royal Air Force.

During World War I, the Imperial Army Air Service utilised a wide variety of aircraft, ranging from fighters ( such as those manufactured by Albatros-Flugzeugwerke and Fokker ) to reconnaissance aircraft ( Aviatik and DFW ) and heavy bombers ( Gothaer Waggonfabrik, better known simply as Gotha, and the Zeppelin-Staaken R. VI " giant " heavy bomber ).

During his time in the Air Force Reserve, he achieved the rank of major.

During the trusteeship rule the United States Air Force established numerous military bases on the Ryukyu islands.

During the interwar period between World War I and World War II, a group of U. S. Army Air Corps officers colloquially referred to as the Bomber Mafia, convinced of the potential of strategic bombing, paved the way both for the massive strategic air campaigns in Europe and the Pacific in World War II and the later creation of SAC.

* Air Force History Part Three: Countering the Communist Threat During the Cold War

During the mission a piece of flak knocked out his hydraulics and electrical systems, causing Williams to have to " limp " his plane back to K-13, a U. S. Air Force airfield close to the front lines.

During the Gulf War of 1991, Sepecat Jaguar GR1A bombers of the Royal Air Force featured such Viz characters as Johnny Fartpants, the Fat Slags and Buster Gonad as nose art.

During a secret live fire exercise of a nuclear attack, many United States Air Force Strategic Missile Wing missileers prove unwilling to turn a required key to launch a missile strike.

During his career, White would log more than 3, 000 flight hours with the Air Force, including about 2, 200 hours in jets, and would ultimately attain the rank of lieutenant colonel.

During World War II, Marshall was instrumental in preparing the U. S. Army and Army Air Forces for the invasion of the European continent.

During the 1980s, a phenomenon known as microburst became a growing concern due to aircraft accidents caused by microburst wind shear, such as Delta Air Lines Flight 191.

During the LA Riots in 1992, when portions of south central Los Angeles erupted in chaos, overwhelming the Los Angeles Police Department's ability to contain the violence, the California Army National Guard and selected units of the California Air National Guard was mobilized to help restore order.

During World War II, Winterbottom served as an officer in the Royal Air Force.

During the Second World War, the RAF and the United States Army Air Force constructed many air bases in East Anglia for the heavy bomber fleets of the Combined Bomber Offensive against Nazi-occupied Europe.

During the closing weeks of the war, he served on the staff of the RAF's Independent Air Force at its headquarters in Nancy, France.

During the Second World War, Binge served in the Royal Air Force, during which time he was much in demand organising camp entertainment.

During World War II, Insterburg was heavily bombed by the British Royal Air Force on July 27, 1944.