Since we can neither undo nor redo the past, we are limited to the events of today and tomorrow.

Since broadcast frequencies are very limited in number, these objectives are to some extent inconsistent in that not all of them can be fully realized, and to the extent that each is realized, there is a corresponding reduction of the possibilities for fullest achievement of the others.

Since commercial signage usually has limited physical space, signage is normally in French alone.

Since approach two is expensive and non-deterministic, its use is very limited.

Since Arafat's death, he is formally head of Fatah's political bureau and chairman, but his actual political following within Fatah appears limited.

Since facilities are limited, visitors must be sponsored indicating that they have an approved residence for the duration of the visit.

Since the inception of the two terms, their meanings have been revised several times and the term macroevolution fell into limited disfavour when it was taken over by such writers as the geneticist Richard Goldschmidt ( 1940 ) and the paleontologist Otto Schindewolf to describe their orthogenetic theories.

Since only a very limited number of Dutch citizens were allowed on this island, the posts of physician and scientist had to be combined.

* Since a ship traveling at impulse velocities ( slower than, but approaching, the speed of light ) is still traveling in the normal space-time continuum, concerns of time dilation apply, so high relativistic speeds are avoided unless absolutely necessary ; impulse power is therefore customarily limited to a maximum of ¼ lightspeed.

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 then she has starred in limited released and straight-to-video films such as 2006's Southland Tales, 2007's Suburban Girl and 2008's The Air I Breathe.

Since three of the major broadcast networks had their transmission towers atop the North Tower ( One World Trade Center ), coverage was limited after the collapse of the tower.

Since there is a limited number of frequencies for non-cable television and radio stations, the government licenses them to various companies.

Since a healthy vagina is colonized by a mutually symbiotic flora of microorganisms that protect its host from disease-causing microbes, any attempt to upset this balance may cause many undesirable outcomes, including but not limited to abnormal discharge and yeast infection.

Since then, a series of excavations has exposed further sections of seating, curved turn and central barrier but further exploration has been limited by the scale, depth and waterlogging of the site.

Since the power wiring system was originally intended for transmission of AC power, the power wire circuits have only a limited ability to carry higher frequencies.

Since the late 19th century, artists have generally signed individual impressions from an edition and often number the impressions to form a limited edition.

Since only a few aspect ratios are commonly used ( mainly 4: 3 and 3: 2 ), the number of sensor sizes that are useful is limited.

Since a limited nuclear war is a viable option for a NUTS theorist, the power to unleash such attacks holds a great deal of appeal.

Since these two projects competed for limited funds during the late 1960s, Norris felt that the company could not support simultaneous development of the STAR and a complete redesign of the 8600.

Since the number of available doctors is therefore limited, doctors working for a private system would not be working under the public system creating little to no net increase in available services.

Since 1967, non-Muslims have been permitted limited access, however non-Muslims are not permitted to pray on the Temple Mount, or carry any form of religious artifact or anything with Hebrew letters.

Since photosynthesis is also limited by ambient carbon dioxide levels, light curves are often repeated at several different constant carbon dioxide concentrations.

Since the whale has limited remaining oxygen supplies at the end of a long dive, it probably has limited abilities to display any normal sound avoidance behavior.

Since then, there has been a notable increase in the number of stations and also the accumulation of additional data and the development of new techniques for using it, leading to a better understanding of propagation phenomena.

Since practical washing procedures are both lengthy and expensive, a number of laboratory tests have been developed for the numerical evaluation of detergents.

Since is the distance from a given number to the mean, one way to interpret this property is as saying that the numbers to the left of the mean are balanced by the numbers to the right of the mean.

The number of neutrons, N, is known as the neutron number of the atom ; thus, A = Z + N. Since protons and neutrons have approximately the same mass ( and the mass of the electrons is negligible for many purposes ), and the mass defect is usually very small compared to the mass, the atomic mass of an atom is roughly equal to A.

Since independence from Portugal in 1975, a number of Angolan students continued to be admitted every year at high schools, polytechnical institutes, and universities in Portugal, Brazil and Cuba through bilateral agreements ; in general, these students belong to the Angolan elites.

Since 4 % can be expressed as. 04, gives the amount of alcohol in terms of ml — which, when divided by, shows the number of units.

Since its disappearance from the Biblical narrative, there have been a number of claims of having discovered or of having possession of the Ark, and several possible places have been suggested for its location.

Since various Molly Pitcher tales grew in the telling, many historians regard Molly Pitcher as folklore rather than history, or suggest that Molly Pitcher may be a composite image inspired by the actions of a number of real women.

Since then groups that are not affiliated to the Santo Daime have used ayahuasca, and a number of different ' styles ' have been developed, such as the non-religious approach developed by Daniel Waterman in 2001, popularly termed Ayahuasca Open Style ( AOS ).

Since then a number of independent developers released games into the new decade, like Championship Rally, CyberVirus, and Alpine Games.

Since then, Clinton has been assigned a number of other diplomatic missions.

Since about 2001, territorial defence forces, which as of 2002 number around 150, 000, have been forming, organized into battalions, companies, and platoons spread across Belarus.

* Since Big Brother 2, the UK series always opens with a twist which have included the public being able to choose the final housemate out of three possibilities ( Big Brother 2 ), the public voting for a housemate to leave during the first week and then the housemates choosing between the two housemates with the least number of votes ( Big Brother 3 ), First Night Nominations ( Big Brother 4 ), Suitcase Nominations ( Big Brother 5 ), Unlucky Housemate 13 ( Big Brother 6 ), Big Brother Hood ( Big Brother 7 ), an all-female House and the first inclusion of twins as contestants ( Big Brother 8 ), the first couple to enter as housemates and set a secret task to hide their real relationship ( Big Brother 9 ), all " housemates " really being " non-housemates " who had to earn their housemate status ( Big Brother 10 ), a mole entering the House with an " Impossible Task " ( Big Brother 11 ), Jackie Stallone entering a house containing her son's ex-wife ( Celebrity Big Brother 3 ), the entrance of a non-celebrity in a celebrity edition ( Celebrity Big Brother 4 ) and Jade Goody's family announced to be visiting.

Since 1974, it has been a purely ceremonial style granted by royal charter to districts which may consist of a single town or may include a number of towns or rural areas.

Since a number of different architectural styles succeeded one another during the Angkorean period, not all of these features were equally in evidence throughout the period.

Since after independence from Portugal in 1975, a number of Cape Verdean students continued to be admitted every year at Portuguese high schools, polytechnical institutes and universities, through bilateral agreements between the Portuguese Government and the Cape Verdean Government.

Since the number of possible sounds in all of the world's languages is much greater than the number of letters in any one alphabet, linguists have devised systems such as the International Phonetic Alphabet ( IPA ) to assign a unique and unambiguous symbol to each attested consonant.

Since the elements can be uniquely sequenced by atomic number, conventionally from lowest to highest ( as in a periodic table ), sets of elements are sometimes specified by such notation as " through ", " beyond ", or " from ... through ", as in " through iron ", " beyond uranium ", or " from lanthanum through lutetium ".

A set S is called countable if there exists an injective function f from S to the natural numbers Since there is an obvious bijection between and it makes no difference whether one considers 0 to be a natural number of not.

) Since Popes can dispense from church laws, they have sometimes brought the number of cardinals under the age of 80 to more than 120, perhaps calculating that the number would be sufficiently reduced by the time the need for a conclave would arise.

Since then, a number of Australian states have introduced or tightened importation regulations.