Since the 1960s, composite airframes and quieter, more efficient engines have become available, and Concorde provided supersonic passenger service for more than two decades, but the most important lasting innovations have taken place in instrumentation and control.

Since the 1960s, the islands have diversified away from their traditionally agriculture-based economy towards tourism and financial services, becoming one of the wealthiest areas in the Caribbean.

Since the 1960s, the bass guitar has largely replaced the double bass in popular music as the bass instrument in the rhythm section.

Since the 1960s, blackjack has been a high profile target of advantage players, particularly card counters, who track the profile of cards that have been dealt and adapt their wager and playing strategies accordingly.

Since the 1960s / 1970s, Blissymbols have become popular as a method to teach disabled or handicapped people to communicate.

Since the 1960s, applied ethics has revived the ideas of casuistry in applying ethical reasoning to particular cases in law, bioethics and business ethics, so the reputation of casuistry is somewhat rehabilitated.

Since the international adoption of the MKS standard in the 1940s and the SI standard in the 1960s, the technical use of CGS units has gradually declined worldwide, in the United States more slowly than elsewhere.

Since the early 1960s, it has been known that volcanism has occurred on other planets and moons in the Solar System.

Since then McLean has stated that the lyrics are also somewhat autobiographical and present an abstract story of his life from the mid-1950s until the time he wrote the song in the late 1960s.

Since at least the 1960s, macroeconomics has been characterized by further integration as to micro-based modeling of sectors, including rationality of players, efficient use of market information, and imperfect competition.

Since at least the 1960s, when Marc Bloch's Feudal Society ( 1939 ) was first translated into English in 1961, many medieval historians have included a broader social aspect that includes not only the nobility but all three estates of the realm, adding the peasantry bonds of manorialism and the estates of the Church ; this is sometimes referred to as " feudal society " since it encompasses all members of society into the feudal system.

Since the 1960s, West and later reunified Germany has been attracting migrants primarily from Southern and Eastern Europe as well as Turkey, many of whom ( or their children ) over time acquired German citizenship.

Since the 1960s rather complex mathematical models have been developed, facilitated by the availability of high speed computers.

Since the 1960s, academic history has seen the emergence of new approaches and topics such as social history, demographic history, ethnic history, women's history, environmental history and cultural history.

Since the 1960s and 1970s a large body of scholarship has provided evidence and analysis of the extent to which heterosexuality and homosexuality are socially organized and historically changing.

Since the 1960s various Scottish shops and manufacturers have created vegetarian haggis, substituting various pulses, nuts and vegetables for the meat in the dish.

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

Since the early 1960s, it has published 12 volumes, the first in 1971 and most recently in 2008 ; three more volumes are planned.

Since the 1960s, he has worked with public interest, consumer, family farm, environmental and community organizations at the local, state and national level.

Since the 1960s, orca has steadily grown in popularity ; both names are now used.

Since the 1960s, a theory based on Linear B phonetic values suggests that Linear A language could be an Anatolian language, close to Luwian.

Since the beginning of the 1960s Ladoga has become considerably eutrophicated.

Since the 1960s, the mainland population has declined by 60-70 %; though there has been a small increase on Motunau Island.

Since the 1960s, the number of people claiming Native American ancestry has grown significantly and by the 2000 census, the number had more than doubled.

Since the 1960s the Chief rabbinate of Israel has moved somewhat closer to the positions of Haredi Judaism.

Since that time, no consensus had yet been reached, and Disraeli was criticised for mixing up details over the different " schedules " of income.

Since 1979, President Obiang has been constrained only by a need to maintain a consensus among his advisers and political supporters, most of whom are drawn from the Nguema family in Mongomo, in the eastern part of Río Muni.

Since the 1990s, scholars including Stanley Payne, Roger Eatwell, Roger Griffin and Robert O. Paxton have been gathering a rough consensus on the ideology's core tenets.

Since the Supreme Leader of Iran is the ultimate clerical authority, Hezbollah's leaders have appealed to him " for guidance and directives in cases when Hezbollah's collective leadership too divided over issues and fail to reach a consensus.

Since the late Middle Ages the Kingdoms of England and Scotland had been evolving towards a quasi-oligarchical or collegiate form of government in which the monarch was held to rule with the consensus of the land-owning upper classes.

Since there is no real consensus about where to draw the exact line between Spaghetti Westerns and other Eurowesterns ( or other Westerns in general ) one cannot say which one of the films mentioned so far really was the first Spaghetti Western.

Since the nineties there is doctrinal consensus that the right extends to cell phone communication, but earlier this was contended.

Since the Second World War a doctrinal consensus has gradually developed that all general Royal Decrees have to conform to these conditions to be valid and that earlier practices to issue general Royal Decrees without meeting these three formalities — such Decrees, general or otherwise, are called " minor Royal Decrees " — can no longer result in regulations with binding force towards the citizen.

Since there is no true consensus on what a continental divide is, there is no real agreement on where the triple points are.

Since the show's end, cast and crew associated with Spaced have been quoted with differing opinions as to whether a third series of " Spaced " would be produced, with their most recent statements reflecting a consensus that the show has concluded and will not see a third series.

Since the early 1980s, the People's Republic of China has been marked by progressive institutionalization and rule by consensus, and moved away from the Maoist authoritarian model.

Since the work was first published, commentators have tried to find patterns, even an overall plan or structure for this huge, diverse work, but little consensus has been reached.

Since unanimity may be difficult to achieve, especially in large groups, or unanimity may be the result of coercion, fear, undue persuasive power or eloquence, inability to comprehend alternatives, or plain impatience with the process of debate, consensus decision making bodies may use an alternative benchmark of consensus.

The gradual evolution of consensus about the meaning of Carl Andre's art can be found in About Carl Andre: Critical Texts Since 1965, published by Ridinghouse in 2008. The most significant essays and exhibition reviews have been collated into one volume, including texts written by some of the most influential art historians and critics: Clement Greenberg, Donald Kuspit, Lucy R. Lippard, Robert C. Morgan, Barbara Rose and Roberta Smith.

Since the 1950s, there has been consensus among archaeologists as to the African origins of Great Zimbabwe.

" Since contemporary academia " leaned to the left ," with its " unquestioned faith in progress and science combined with a queasiness regarding any kind of moral judgment ," Strauss stood outside of the academic consensus.

Since the 1970s, the consensus of the behavioral and social sciences and the health and mental health professions globally is that homosexuality is a normal variation of human sexual orientation, while there remain those who maintain that it is a disorder.

Since Lebanon is a multireligious state and consensus democracy, having a national unity government is more favorable in this country.

Since then the consensus in most Trotskyist groups has been that all the states dominated by Stalinist parties and characterised by state planning and state ownership of property are to be seen as ' degenerated workers ' states ' ( The Soviet Union ) or ' deformed workers ' states ' ( other Stalinist states, including much of Eastern Europe ).

Since 1969, Troodontidae has typically been allied with Dromaeosauridae, in a clade ( natural group ) known as Deinonychosauria, but this was by no means a consensus.

Since the last choice is so wide, the pattern is sometimes equated with the IQ motif itself, but a more accurate description would be a consensus sequence for the IQ motif.

Since a consensus was reached regarding the standards of training and major functions of a school psychologist, the public can now be assured that all school psychologists are receiving adequate information and training to become a practitioner.

Since it was to work by consensus, nothing could be accomplished by the new council without the agreement of President Thieu.

Since the term is an imprecise one, not clearly referring to any specific historical script and not used with any consensus in meaning, modern scholars tend to avoid it, and when referring to seal script, generally mean the ( small ) seal script of the Qin system, that is, the lineage which evolved in the state of Qin during the Spring and Autumn to Warring States periods and which was standardized under the First Emperor.