Since World War I, achieving and maintaining air superiority has been essential for victory in conventional warfare.

Since 1990, Hungary's top foreign policy goal has been achieving integration into Western economic and security organizations.

Since the 2005 general election the government has floated the idea of voluntary mergers of local councils, avoiding a costly reorganisation but achieving desired reform.

Since the state controls the means of coercion, and given the dependence of many groups in civil society on the state for achieving any goals they may espouse, state personnel can to some extent impose their own preferences on civil society.

Since achieving independence in 1946, Syria has harbored a lingering resentment and this issue has continued to be an irritant in Syrian-Turkish relations.

Since it was his long-standing advocacy of Athenian naval power which enabled the Allied fleet to fight at all, and it was his stratagem that brought about the Battle of Salamis, it is probably not an exaggeration to say, as Plutarch does, that Themistocles " is thought to have been the man most instrumental in achieving the salvation of Hellas ".

Since 1979, Passive Solar Building Design has been a critical element of achieving zero energy by educational institution experiments, and governments around the world, including the U. S. Department of Energy, and the energy research scientists that they have supported for decades.

Since achieving independence in 1971, Bahrain has maintained friendly relations with most of its neighbours and with the world community.

Since achieving independence in 1966, the island nation of Barbados has transformed itself from a low-income economy dependent upon sugar production, into an upper-middle-income economy based on tourism and the offshore sector.

Since saluting the flag was a primary means of achieving this legitimate goal, an issue of national importance was at stake.

Since about the year 2000, Mayo Clinic has also become known for achieving high quality at low cost.

Since their promotion the club have consolidated in the top flight, achieving a string of mid-table finishes under the command of several managers.

Since mobile communication technologies have evolved independently across continents, there is significant challenge in achieving seamless roaming across these technologies.

Since achieving independence from the United States in 1946 the Philippine Congress has established 124 more cities ( as of September 2007 ), the majority of which required the holding of a plebiscite within the proposed city's jurisdiction to ratify the city's charter.

Since his death, under Jiang's leadership, mainland China has sustained an average of 8 % GDP growth annually, achieving one of the world's highest rates of per capita economic growth, and became the world's fastest growing major economy.

Since achieving its 1st # 1 ranking in the 1994 – 95 season, UConn under Auriemma is 186-10 when playing as the nation's # 1 team.

Since achieving first light in 1996, the telescope has been used for a wide variety of studies ranging from our Solar System to stars in our galaxy and studies of other galaxies.

Since achieving IOC, Dyess has been recognized as the premier bomber training center and leads the fleet in maintaining the highest mission capability status of both its aircraft and avionics test stations and support equipment.

Since South Africa's return to the Olympic Games in 1992 after a four-decades long absence resulting from a ban imposed by the International Olympic Committee ( IOC ) for the country's Apartheid policies, it has seen mixed success ; achieving three gold medals, a silver and a bronze at the 1996 Summer Olympics in Atlanta but only managing two silver medals and three bronze medals at the 2000 Summer Olympics in Sydney.

Since the founding of the University, USTC has undertaken a large batch of national, ministerial and provincial research projects, achieving large number of research results.

Since achieving statehood in 1890, the U. S. state of Wyoming has been a one at-large Congressional District.

Since surprise in location was impossible, it was further indicated that Rommel had to depend on achieving surprise in time and speed.

Since achieving symmetry is a difficult task during human growth, requiring literally billions of cell reproductions while maintaining a parallel structure, achieving symmetry is a visible signal of genetic health.

Since gaining independence from the United Kingdom in 1960, Cyprus has had a record of successful economic performance, reflected in strong growth, full employment conditions and relative stability.

Since then, the country has benefited from political stability.

Since then IIT Kanpur has increased collaboration with industry and has achieved a reasonable level of stability.

Since the Second World War, Luxembourg has become one of the world's richest countries, buoyed by a booming financial services sector, political stability, and European integration.

Since the end of the Angolan Civil War ( 1975 – 2002 ), stability has been widespread in the country, and major reconstruction has been going on since 2002 in those parts of the country which have been damaged by the civil war.

Since then, Macedonia has maintained macroeconomic stability with low inflation, but it has so far lagged the region in attracting foreign investment and creating jobs, despite making extensive fiscal and business sector reforms.

Since the discovery of Newton's law of universal gravitation in the 17th century, the stability of the Solar System has preoccupied many mathematicians, starting with Laplace.

Since the turn of the 21st century, higher domestic consumption and greater political stability have bolstered economic growth in Russia.

Since Slovenia declared independence in 1991, its Governments have underscored their commitment in improving cooperation with neighbouring countries and to actively contribute to international efforts aimed at bringing stability to Southeast Europe.

Since that time, Uzbekistan has participated in the CIS peacekeeping force in Tajikistan and in United Nations-organized groups to help resolve the Tajik and Afghan conflicts, both of which it sees as posing threats to its own stability.

Since the power flow in a DC link is controlled independently of the phases of the AC networks at either end of the link, this stability limit does not apply to a DC line, and it can transfer its full thermal rating.

Since the peace agreement was signed in 1992, the country has returned to its pre-independence levels of political stability.

Since the end of the Cold War, Norway has developed a model to foreign policy known as the " Norwegian model ," the goal of which is to contribute to peace and stability through coordinated response among governmental and non-governmental Norwegian organizations ; acting as an honest broker in international conflicts ; an informal network of Norwegian individuals with access and credibility among parties ; and the willingness to take the long view in international issues.

Since some amateur telescope makers do not have access to high-precision machining equipment, many elegant designs such as the Poncet Platform, Crayford focuser, and the Dobsonian telescope have evolved, which achieve functionality and stability without requiring precision machining.

Since the return of democracy, Argentina has also turned into strong proponent of enhanced regional stability in South America, the country revitalized its relationship with Brazil ; and during the 1990s ( after signing the Treaty of Peace and Friendship of 1984 between Chile and Argentina ) settled lingering border disputes with Chile ; discouraged military takeovers in Ecuador and Paraguay ; served with the United States, Brazil and Chile as one of the four guarantors of the Ecuador – Peru peace process.

Since 1985, the Government of Bolivia has implemented a far-reaching program of macroeconomic stabilization and structural reform aimed at maintaining price stability, creating conditions for sustained growth, and alleviating poverty.

Since the center of pressure for symmetric airfoils is relatively constant for small angle of attack, missile engineers typically speak of the complete center of pressure of the entire vehicle for stability and control analysis.

Since the late 1990s, there has been a resurgence in the popularity of analog synthesizers spurred on by physical standardization practices, an increase in ' retro ' gear and interest, decreased production costs and increased electronic reliability and stability, the rediscovered ability of modules to control things other than sound, and a generally heightened education through the development of virtual synthesis systems such as MAX / MSP and Pd.

Since fault coverage is important in stability testing, the tests are often run for long periods of time, hours or even days.

Since Willson, however, the stability of James's government in Scotland and in the early part of his English reign, as well as his relatively enlightened views on religion and war, have earned him a re-evaluation from many historians, who have rescued his reputation from this tradition of criticism.

Since these characteristics will typically make control by the pilot difficult or impossible, an artificial stability will typically be imposed using computers, servos, and sensors as parts of a fly by wire control system.

Since 1995, the HKMA has entered into a stability pact with central banks in Malaysia, Thailand, Indonesia and Australia to engage in repurchase agreements, which provide liquidity on a two-way basis.

Since the surface of the Earth is a low temperature environment compared to the zones of rock formation, the chart also easily shows the stability of minerals with the ones at bottom being most stable and the ones at top being quickest to weather, known as the Goldich dissolution series.

Since fermion masses are logarithmically divergent, scalar masses inherit the same radiative stability.