Since being liberalized in 1991, the Colombian telecommunications sector has added new services, expanded coverage, improved efficiency, and lowered costs.

Since privatization was implemented in 1993, the efficiency of port handling has increased greatly.

Since then it has been proven to work, although efficiency to the level required has not yet been accomplished.

Since, by the second law of thermodynamics, this is statistically improbable to the point of exclusion, the Carnot efficiency is a theoretical upper bound on the reliable efficiency of any process.

Since a laser can heat propellant to extremely high temperatures, this potentially greatly improves the efficiency of a rocket, as exhaust velocity is proportional to the square root of the temperature.

Since one or more power conversion steps are eliminated, this increases efficiency and run time.

Since the antenna is specified as being lossless the radiation efficiency is 1.

Since that replacement, the great expansion of total power was driven by continuous improvements in energy conversion efficiency.

Since the invention of the first working sewing machine, generally considered to have been the work of Englishman Thomas Saint in 1790, the sewing machine has vastly improved the efficiency and productivity of fabric, clothing and needle industries.

Since it is only at an early stage of development, there are several technical and efficiency issues that should be analyzed.

Since losses are proportional to I < sup > 2 </ sup >, increasing current beyond this point eventually decreases efficiency although it may increase the force.

Since the bulk of the organization's expenses are spent on the salaries of the top three employees and on fundraising, the independent charity evaluator Charity Navigator rated its efficiency a zero, or " exceptionally poor ", and the overall organization as " poor " in 2008.

Since thermoelectric devices are heat engines, their efficiency is limited by the Carnot efficiency, hence the T < sub > H </ sub > and T < sub > C </ sub > terms in.

Since DirectX version 9, this issue can be alleviated at the expense of efficiency.

Since electricity production itself today has efficiency levels ranging from only 15 % to slightly over 55 % ( combined cycle gas turbine ), with around 40 % typical for thermal power stations, direct resistance electric water heating is typically the least energy efficient option.

Since most sailboats are symmetric along their axis of motion, when sailing upright, the lateral force can come from either side, which means that centreboards must use symmetric foil shapes so they will operate with equal efficiency on either tack.

Since the turbine blade geometry is a crucial factor in the converter's ability to multiply torque, trade-offs between torque multiplication and coupling efficiency are inevitable.

Since then, BUPT has greatly improved its quality of education, scientific research, management and institutional efficiency.

Since few heavy-duty transmissions have synchromesh, automatic transmissions are commonly used instead, despite their increased weight, cost, and loss of efficiency.

Since the growing world food problem of the 1940s was solved by better crop efficiency and not from a " super food ," Chlorella has not seen the kind of public and scientific interest that it had in the 1940s.

Since 1997, the Ministry of Commerce ( MOFCOM, the former Ministry of Economy and Foreign Trade ) started a comprehensive appraisal on investment environment of all national-level development zones which covers eight major indicators like overall economic strength, infrastructure, operation cost, human resources and supply, society and environment, facilitation for technology innovation, management system building, and development and efficiency.

Since the machine code emitted by a dynamic compiler is constructed and optimized at program runtime, the use of dynamic compilation enables optimizations for efficiency not available to compiled programs except through code duplication or metaprogramming.

Since propellant typically represents the majority of the takeoff weight of a rocket, HOTOL was to be considerably smaller than normal pure-rocket designs, roughly the size of a medium-haul airliner such as the McDonnell Douglas DC-9 / MD-80.

Since the 2003 Invasion of Iraq, the US Marine Corps has introduced a thermobaric ' Novel Explosive ' ( SMAW-NE ) round for the Mk 153 SMAW rocket launcher.

Since 1995 Khrunichev's Proton rocket is marketed through International Launch Services while the Soyuz rocket is marketed via Starsem.

Since then, China has made many advances in its ballistic missile and rocket technology.

Since at least 2006, Iran has arranged arms shipments to select Taliban members, including small arms and associated ammunition, rocket propelled grenades, mortar rounds, 107mm rockets, and plastic explosives.

Since the early 1960s, a copy of the Model Rocket Safety Code has been provided with most model rocket kits and motors.

Since the planet is moving left at speed U, the total velocity of the rocket relative to the observer will be the velocity of the moving planet plus the velocity of the rocket with respect to the planet.

Since that time the rocket base Angara has become cosmodrome Plesetsk.

Since they need no external material to form their jet, rocket engines can be used for spacecraft propulsion as well as terrestrial uses, such as missiles.

Since rocket delta-v has a non linear relationship to mass fraction due to the rocket equation, any small reduction in delta-v gives a relatively large reduction in the required mass fraction ; and starting a mission at higher altitude also helps.

Since the mass of the oxidizer is, at takeoff, the single largest mass of most rocket designs ( the Space Shuttle's liquid oxygen tank weighs 629, 340 kg, more than one of its solid rocket boosters ), this provides a huge potential weight savings benefit.

Since the beginning of the Second Intifada in October 2000, the city has been under constant rocket fire from Qassam rockets launched by Hamas and Islamic Jihad.

Since 1995 Khrunichev's Proton rocket is marketed through International Launch Services while the Soyuz rocket is marketed via Starsem.

Since rocket scientist Hermann Oberth worked as an advisor on this movie ( he had originally intended to build a working rocket for use in the film ; time and technology kept this from happening ), it was popular among the rocket scientists in Wernher von Braun's circle at the Verein für Raumschiffahrt ( VfR ).

Since heavy weapons of a normal combined-arms force could not follow, the infantry would be supported by coordinated air, artillery, and aerial rocket fire arranged from a distance and directed by local observers.

Since that time leaders of the Soviet military industrial complex preferred Yuzhmash rocket models.

Since the surfaces of a wet clutch can be slippery ( as with a motorcycle clutch bathed in engine oil ), stacking multiple clutch discs can compensate for the lower coefficient of friction and so eliminate slippage under power when fully engaged.

Since the weight of the engine was so much less than on piston engined fighters, having two engines was no longer a handicap and one or two were used, depending on requirements.

Since the heat source that supplies thermal energy to the engine can thus be powered by virtually any kind of energy, heat engines are very versatile and have a wide range of applicability.

Since very few actual implementations of heat engines exactly match their underlying thermodynamic cycles, one could say that a thermodynamic cycle is an ideal case of a mechanical engine.

Since Id Software revealed their engine Id Tech 5, they call their engines " Id Tech ", followed by a version number.

Since 2001, trim levels are also indicated by including a number after the main index: '- 00 ' means base trim level, '- 01 ' means standard trim and '- 02 ' designates deluxe version ; for example, VAZ-21121-02 means Lada 112 hatchback with an 1. 6L SOHC engine and deluxe trim.

Since the piston is the main reciprocating part of an engine, its movement creates an imbalance.

Since the engine does not have an oil injection system, two-stroke oil has to be added to the fuel tank every time the car was filled up, at a 50: 1 or 33: 1 ratio of fuel to oil.

Since some Web search engines base the importance of sites on the number of different sites linking to them, referrer-log spam may increase the search engine rankings of the spammer's sites.

Since it provides the graphical elements surrounding the area in which the engine paints documents, the term chrome is sometimes used to refer to it.

Since the mid-1990s, Alenia Aermacchi has participated in programs for the supply of engine nacelles for civil aircraft.

Since the World Sportscar Championship was conceived there have been various regulations regarding bodywork, engine style and size, tyres and aerodynamics to which these cars must be built.

Since it is difficult to know that the rasterization engine will draw all pixels from front to back, there must be some way of ensuring that pixels close to the viewer are not overwritten by pixels far away.

Since the original source code to the game was lost by Rogue Entertainment, game engine recreations of Strife were created by Doom source port developers through reverse engineering, notably by Jānis Legzdiņš ( author of the Doom source port Vavoom ), Randy Heit ( author of ZDoom ), Samuel Villarreal ( author of SvStrife ) and James Haley ( author with Samuel Villareal of Chocolate Strife ).

Since 1976 Hodgkins has been served by the Pleasantview Fire Protection District which had its own humble beginnings with one engine in 1946 and has grown into a top-notch organization since then.

Since the transom may need to be cut down for the engine to fit properly, an engine well should be used to prevent low waves from splashing over the transom and flooding the boat.

Since the pressure on top of the engine is ambient, this means that base gives no overall thrust ( but it also means that this part of the nozzle doesn't lose thrust by forming a partial vacuum, thus the base part of the nozzle can be ignored at low altitude ).

Since fuel is not present in the combustion chamber until virtually the point at which combustion is required to begin, there is no risk of pre-ignition or engine knock.

Since then, improvements in both engine power and armament generally led to a loss of interest in this class for most nations.

Since the success and popularity of a search engine is determined by its ability to produce the most relevant results to any given search, allowing those results to be false would turn users to find other search sources.

Since WorldWideWeb was developed on and for the NeXTSTEP platform, the program used many of NeXTSTEP's components – WorldWideWeb's layout engine was built around NeXTSTEP's Text class.

* Since its introduction in 1975, the Honda Goldwing has utilized a boxer engine, a four-cylinder until 1987, and six-cylinders since.

Since then, the inline-four has become one of the most common engine configurations in street bikes.