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 then, many other drugs have been developed to treat cancer, and drug development has exploded into a multibillion-dollar industry, although the principles and limitations of chemotherapy discovered by the early researchers still apply.

Since its introduction, the term has been picked up and used by various researchers engaging in Science and technology studies.

Since many real-world programs spend most of their time executing simple operations, some researchers decided to focus on making those operations as fast as possible.

Since the last reorganization in 1999 the university has a separate body called the academic senate, which is a wider, but mostly advisory group representing teaching staff / researchers and students.

Since then governments have investigated UFO reports, often from a military perspective, and UFO researchers have investigated, written about, and created organizations devoted to the subject.

Since the mid-1970s, researchers in the field of artificial intelligence ( AI ) have recognized that capturing knowledge is the key to building large and powerful AI systems.

Since the 1970s, researchers have attempted to trigger lightning strikes by means of infrared or ultraviolet lasers, which create a channel of ionized gas through which the lightning would be conducted to ground.

Since its inception, 12 researchers associated with Berkeley Lab ( Ernest Lawrence, Glenn T. Seaborg, Edwin M. McMillan, Owen Chamberlain, Emilio G. Segrè, Donald A. Glaser, Melvin Calvin, Luis W. Alvarez, Yuan T. Lee, Steven Chu, George F. Smoot and Saul Perlmutter ) have been awarded the Nobel Prize.

Since 1970 researchers at the Communications Research Centre ( CRC ) in Ottawa had been working on a set of " picture description instructions ", which encoded graphics commands as a text stream.

The researchers note, " Since previous reports have indicated that unique responses were observed at higher frequency in the artistic population than in the nonartistic normal population, this positive correlation suggests that amygdalar enlargement in the normal population might be related to creative mental activity.

: Since the mid 1950s, the amount of published material on SA America has been gradually growing, but even so, the number of researchers is far smaller than the growing number of linguistic communities whose speech should be documented.

Since 2009, most researchers use a different nomenclature based on the gene defect ( e. g. CDG-Ia

Since gender, age, racial, income, and educational gaps in the digital divide have lessened compared to past levels, some researchers suggest that the digital divide is shifting from a gap in access and connectivity to ICTs to a knowledge divide.

Since the arrival of these methods, market researchers have been able to make better, more accurate, suggestions to their clients regarding the decision to move forward, revise, or start over with a product concept.

Since researchers can behave differently to subjects given treatments or placebos, trials are also doubled-blinded so the researchers do not know to which group a subject is assigned.

Since 2006, researchers have applied RCU and similar techniques to a number of problems, including management of metadata used in dynamic analysis, managing the lifetime of clustered objects, managing object lifetime in the K42 research operating system, and optimizing software transactional memory implementations.

Since the age of Lost Jerusalem, many researchers have studied and attempted to control the Zohar.

Since 1990, several other researchers have begun to study and report on the development of this unique language and its community ( including Ann Senghas, Marie Coppola, Richard Senghas, Laura Polich, and Jennie Pyers ).

Since the geographical aspect of the occurrence of sound changes ( i. e. o > a ) within Thracian territory, based on the work of V. Georgiev, began to be emphasised by some researchers, the chronological aspect has been somewhat neglected.

Since that early time, however, other researchers ( e. g., Cattell, Guilford, and Thurstone ) have argued that intellect cannot be expressed in such a unitary manner, and have suggested more multifaceted approaches to intelligence.

Since researchers first began to study acclimation, the overwhelming hypothesis has been that all acclimation serves to enhance the performance of the organism.

Since information regarding the current state of the economy is readily available, researchers attempted to expose the properties of business cycles to predict the availability bias in analysts ’ growth forecasts.

Since historiometry is based on indirect information like historic documents and relies heavily on statistics, the results of these studies are questioned by some researchers, mainly because of concerns about over-interpretation of the estimated results.

Since 1995 her personal files are in IEL-UNICAMP and are available to researchers worldwide.