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 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 the islands are located in the center of the East China Sea relatively close to Japan, China and South-East Asia, the Ryūkyū Kingdom became a prosperous trading nation.

Since the Samnites were more warlike than the civilised Campanians, they easily took over the cities of Capua and Cumae, in the area which was one of the most prosperous and fertile in the Italian Peninsula at the time.

Since the 1860s, the Ardèche economy has been split between the prosperous Rhône valley and the relatively poor and mountainous Haut Vivarais on the western side of the department.

Since that point, the town continued to slowly grow into a prosperous community.

" Since his arrival in the U. S., backed by a group of prosperous but shady entrepreneurs, Carnera's career has been less glorious than fantastic.

Since the 13th century, as armies became primarily composed of mercenaries, prosperous city-states could field considerable forces, despite their low populations.

Since then, and until the modern age of automation, the factories have offered jobs to many generations of Kuusankoski citizens, making the area somewhat more prosperous than the neighbouring regions.

Since the years immediately preceding the Panic of 1857 were prosperous, many banks, merchants, and farmers had seized the opportunity to take risks with their investments and as soon as market prices began to fall, they quickly began to experience the effects of financial panic.

Since the late 1960s, there existed poets that sang with acoustic guitars and played in the then prosperous café cantante scene.

" Since his arrival in the U. S., backed by a group of prosperous but shady entrepreneurs, Carnera's career has been less glorious than fantastic ....

Since pre-Arab and pre-Islamic times, al-Jazira has been an economically prosperous region with various agricultural ( fruit and cereal ) products, as well as a prolific manufacturing ( food processing and cloth weaving ) system.

Since 1898, Tubay was a prosperous town.

Since the 1981 assassination of Anwar Sadat and consequential inauguration of Hosni Mubarak as the President, the Egyptian economy has endured three decades of economic stagnation that has prompted a significant number of Egyptians to emigrate to more prosperous countries, such as the United States.

Since the middle of the 2nd century writings of Justin Martyr use language very similar to that found in the Gospel of John, the Gospel is considered to have been in existence at least at that time.

Since the middle of the 1820s, numerous works comprising coke blast furnaces as well as puddling and rolling mills were built in the coal mining areas around Liège and Charleroi.

Since old to middle, the de facto Standard Japanese had been Kansai dialect, especially Kyoto.

Since Nobunaga would not expect an attack in the middle of his firmly controlled territories, he was guarded by only a few dozen personal servants and bodyguards.

Since musketeers could not afford to take the time to stop and clean their barrels in the middle of a battle, rifles were limited to use by sharpshooters and non-military uses like hunting.

Since the middle of the 18th century, coal has been mined.

Since the presence of borderline cases seems to threaten principles like this one ( excluded middle ), the fact that supervaluationism can " rescue " them is seen as a virtue.

Since the middle of the 19th century this form of the instrument has also been used in military and civil bands in Germany, where it is called a Stahlspiel or Militär-Glockenspiel.

" Since Benjamin Gaither lived during the 18th century, it's probable that his name was pronounced with a soft TH as in most native English names and words in which it occurs in the middle, and this would have been carried over into the city name.

Since the middle of the 19th century, some monarchists have stopped defending monarchy on the basis of abstract, universal principles applicable to all nations, or even on the grounds that a monarchy would be the best or most practical government for the nation in question, but on local symbolic grounds that they would be a particular nation's link to the past.

Since the middle 20th century, they have been replaced in laboratory contexts primarily by mice and rats.

Since, none of the means of knowing were found to be worthy to establish the invariable connection between middle term and predicate, Cārvākas concluded that the inference could not be used to ascertain metaphysical truths.

Since then, the duo often break character in the middle of elaborate sketches to do an " accent check " and repeat these lines.

Since the middle of the 20th Century El Portal Shopping Center has been the backbone of the community's economy.

Since 2003, Anne McCaffrey and her middle child Todd McCaffrey have developed the history immediately before and during the Third Pass, about 500 Turns after landing ( AL ).

Since the middle of the 20th century, there has been a gradual syncretism and fusion of traditions.

Since the early 9th century the middle Oker river has formed the diocesan boundary between the bishoprics of Halberstadt and the Hildesheim established by Emperor Charlemagne and his son Louis the Pious in the Duchy of Saxony.

Since the late 2000s ( decade ) the southeastern district of Surco has experienced a significant increase in upscale corporate developments in the area comprised by avenues Manuel Holguín, El Derby, El Polo and La Encalada due to lower restrictions to grant construction licences and proximity to residential middle and upper class districts and is set to become, after traditional San Isidro and Miraflores, the new corporate center of Lima.

Since telephone switches are symmetric ( callers and callees are interchangeable ), the same logic will apply to the output layer, and the middle subswitches will be " square ", having the same number of inputs as outputs.

Since the whole switch is for a telephone system ( caller and callees are interchangeable ), it is also symmetric, so there is also a free wire from one of the middle layer subswitches to the needed output subswitch.

Since the ear is most sensitive to the middle frequencies produced by a midrange the driver and amplifier can both be low power, while still delivering what is perceived to be good sound both in terms of volume and quality.

Since the middle of the sixth century BC, the rulers of Jin had steadily lost political powers to their nominally subordinate nobles and military commanders, a situation arising from the traditions of the Jin which forbade the enfeoffment of relatives of the ducal house.

Since the middle of the 1990s, however, the species has formed part of the " Northernberries " research project.

Since the Dutch educational system does not have middle schools or junior high schools, the first year of all levels in Dutch high schools is referred to as the brugklas ( literally, bridge class ), as it connects the elementary school system to the secondary education system.