Since the mid 1950s, when urethane foam first made its appearance in the American market, growth has been little short of fantastic.

Since the 1950s, this type of fiction has to a large extent merged with science fictional tropes involving cross-time travel between alternate histories or psychic awareness of the existence of " our " universe by the people in another ; or ordinary voyaging uptime ( into the past ) or downtime ( into the future ) that results in history splitting into two or more time-lines.

Since the 1950s, Prince Philip has also added herbaceous borders and a water garden.

Since the growth of global fishing enterprises after the 1950s, intensive fishing has spread from a few concentrated areas to encompass nearly all fisheries.

" Since the 1950s conservatism in the United States has been chiefly associated with the Republican Party.

* Since the 1950s, the United States Atomic Energy Commission has named its highest honor, the Fermi Award, after him.

Since the 1950s, hydrology has been approached with a more theoretical basis than in the past, facilitated by advances in the physical understanding of hydrological processes and by the advent of computers and especially geographic information systems ( GIS ).

Since the 1950s, when Lacan and Foucault argued that each epoch has its own knowledge system, which individuals are inexorably entangled with, many post-structuralists have used historicism to describe the view that all questions must be settled within the cultural and social context in which they are raised.

Since the 1950s, many blues harmonica players have amplified their instrument with microphones and tube amplifiers.

Since the 1950s and 1960s in particular, the Irish have become assimilated into the British population.

Since the 1950s, following the lead of D. W. Jefferson, there are those who argue that, whatever its legacy of influence may be, Tristram Shandy in its original context actually represents a resurgence of a much older, Renaissance tradition of " Learned Wit " – owing a debt to such influences as the Scriblerian approach.

Since the 1950s, manga has steadily become a major part of the Japanese publishing industry, representing a ¥ 406 billion market in Japan in 2007 ( approximately $ 3. 6 billion ) and ¥ 420 billion ($ 5. 5 billion ) in 2009.

Since the 1950s however, manufacturing shortcuts have resulted in a quality decline of machetes.

Since trade was restricted in the 1950s they have found work as high altitude porters, guides, cooks and other accessories to tourism and alpinism.

Since the early 1970s, oral history in Britain has grown from being a method in folklore studies ( see for example the work of the School of Scottish Studies in the 1950s ) to becoming a key component in community histories.

Since the 1950s, the club's helmets have featured eagle wings, originally silver on a kelly green helmet.

Since the late 1950s, almost all phono input stages have used the RIAA equalization standard.

Since the 1950s, television has been the main medium for molding public opinion.

Since the 1950s, television has been the main medium for molding public opinion.

Since the 1950s, Montevideo's prosperous middle classes have tended to abandon the formerly fashionable downtown areas for the more modern high-rise apartment buildings of Pocitos, a beachfront neighborhood east of the center.

Since the late 1950s, aerospace engineers have used the term " unobtainium " when referring to unusual or costly materials, or when theoretically considering a material perfect for their needs in all respects, except that it does not exist.

Since the end of the 20th century, the economic strength during the 1920s has drawn close comparison with the 1950s and 1990s, especially in the United States of America.

Since the 1950s, Real Madrid and Barcelona have dominated the championship.

: Since the 1950s, both the atmospheric CO < sub > 2 </ sub > level and obesity levels have increased sharply.

Since then, the Cockney accent has been more accepted as an alternative form of the English Language rather than an ' inferior ' one ; in the 1950s the only accent to be heard on the BBC ( except in entertainment programmes such as Sooty ) was RP, whereas nowadays many different accents, including Cockney or ones heavily influenced by it, can be heard on the BBC.

Since most European cars average more miles per gallon of gasoline than American cars, it naturally follows that the cost per kilometer for these models will be less, but the greater seating capacity of the large American cars will equalize this, provided your group is sufficiently large to fill a 7-passenger limousine.

Since many European typewriters placed the parentheses with 8 and 9, those corresponding positions were chosen for the parentheses.

Since 1990, Bulgaria has an unstable party system, in the past two decades differently dominated by the post-communist Bulgarian Socialist Party or by the right Union of Democratic Forces and recently by the new right-oriented party-Citizens for European Development of Bulgaria.

Since the following two hundred years saw the rise of the Classical Greek civilization, which has been enduringly influential in western society, the Battle of Marathon is often seen as a pivotal moment in European history.

Since the late 1990s, Dublin has experienced a significant level of net immigration, with the greatest numbers coming from the European Union, especially the United Kingdom, Poland and Lithuania.

Since the great majority of people who first attempted to transcribe Chinese were not linguists ( and even if they were, the principles of modern phonemics were not discovered for another two centuries ), their endeavour was marred by a lack of systematic approach and many contemporary European misconceptions about language.

A right to education has been created and recognized by some jurisdictions: Since 1952, Article 2 of the first Protocol to the European Convention on Human Rights obliges all signatory parties to guarantee the right to education.

Since regaining independence, Estonia has pursued a foreign policy of close cooperation with Western European nations.

Since the 1979 European Parliament election regionalists and separatists have been represented in the European Parliament.

Since 20 July 2004, ELDR is politically represented in the European Parliament by the Alliance of Liberals and Democrats for Europe ( ALDE ) parliamentary group, formed in conjunction with the European Democratic Party.

Since its creation in 1967, the centre has operated 60 European space missions.

Since ECMWF runs a wave model, there are also predictions of coastal waves and storm surges in European waters which can be used to provide warnings.

Since family names are normally written last in European societies ( except in Hungary ), the term last name is commonly used for family name, while in East Asia ( with vertical writing ) the family name may be referred to as upper name ( as in Japanese ).

Since the island is close to Africa, many illegal immigrants try to enter the European Union through it, by a dangerous boat trip from Morocco.

Since 1951, Germany has been at the heart of European Integration and after German reunification in 1990 further promoted peaceful integration with its neighbors.

Since German reunification in 1990, and the accession of some Central European and Baltic States into the European Union in 2004, the Port of Hamburg has restarted ambitions for regaining its position as the region's largest deep-sea port for container shipping and its major commercial and trading centre.

Since World War II France has been a leading member in the UN, the European Union and NATO, and remains a strong economic, cultural, military and political influence in the 21st century.

Since the passage of the Human Rights Act 1998, the courts have been able to declare an Act of Parliament to be incompatible with the European Convention on Human Rights, but such a declaration of incompatibility has no legal effect unless and until it is acted upon by the government.

Since the fall of the Berlin Wall in 1989, and more recently, the 2004 and 2007 enlargements of the European Union, the main waves of migration came from the former socialist countries of Eastern Europe ( especially Romania, Albania, Ukraine and Poland ).

Since its unification in 1861, Italy has been considered a major European country.

Since the end of Sakoku in 1853, the flow of loanwords from European languages has increased significantly – the last half-century or so has seen a very large volume of words borrowed from English, especially words about technology, including pasokon ( a shortening of " personal computer "), intānetto (" Internet "), and kamera (" camera ").

Since Poland was regarded as the East European state with the most powerful army, it became imperative to tie Poland to Britain as the best way of ensuring Polish support for Romania, since it was the obvious quid pro quo that Britain would have to do something for Polish security if the Poles were to be induced to do something for Romanian security.