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Scattering theory the quantum theory of nonrelativistic collisions john r taylor

the quantum physics of black holes and string theory

the quantum physics of black holes and string theory

... advent of strings as a theory of quantum gravity, there was an attemptto control loop divergences in gravity by making the theory supersymmetric. The greater the number of supersymmetries, the ... explicit formulae for dimensional reduction of the bosonic sector of the theory, the fermionic sector can be treated similarly. Thereare two types of gravitinos—fermionic partners of the graviton. ... Mathura review of string dualities, see Reference [16]).Remarkably, in all these theories there is a set of exactly massless modes thatdescribe the very-low-energy behavior of the theory. String...
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scientific american   -  1993 04  -  controlling the quantum jitters of atoms

scientific american - 1993 04 - controlling the quantum jitters of atoms

... beenfurther strengthened by Larry J. Shapiro of the University of California School of Medicine at San Francisco, Jacob Wahr-man of the Hebrew University of Jerusa-lem, John R. McCarrey and ... pau-city of researchers able to make radarstudies of asteroids, quips that ÒweÕre allhoping Ostro isnÕt run over by a truck.ÓCurrent programs are turning up near-earth asteroids at the rate of a ... earlyretirement persist, future retirees willdraw beneÞts from age-entitlement pro-grams for 30 years or more and spendup to one third of their lives in retire-ment. Thus, the current patterns of work...
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genetic programming on the programming of computers by means of natural selection - john r. koza

genetic programming on the programming of computers by means of natural selection - john r. koza

... correspond to the inputs to a computer program. The results produced by the formulae correspond to the output of the computer program.As another example, consider the problem of controlling the ... the results of genetic programming are rarely the minimal structure for performing the task at hand. Instead, the results of genetic programming are replete with totally unused substructures ... breed the population of computer programs, using the Darwinian principle of survival and reproduction of the fittest and the genetic operation of sexual recombination (crossover). Both reproduction...
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Consolidation Chareteristics based on a direct analytical solution of the Terzaghi Theory

Consolidation Chareteristics based on a direct analytical solution of the Terzaghi Theory

... of the Taylor method. The present study confirms that the identification of the experimental range of primary consolidation that corresponds to the Terzaghi theory is of primary importance ... methods predicted very similar ranges for the primary consolidation (that corresponds to the Terzaghi theory) or similar pδ values, the vc values estimated from these methods were observed ... for a particular pressure increment may be attributed to one or more of the following factors: (a) variations in vc that may increase, decrease or remain constant during a pressure increment...
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Reading Theory as a Microcosm of the Four Skills

Reading Theory as a Microcosm of the Four Skills

... technical or otherwise. Any of the group that actually work, will almost certainly be trying to improve their English, as a means of improving their job prospects or job performance; their needs ... section of the paper, we will consider some practical ways of aiding a particular group of students, in becoming more proficient readers. This imaginary group consists of about ten or so European ... useful for those who strive to learn from these theories and use them in a constructive way. Thus, the sum of the parts may be greater, and more practically helpful, than the whole.Each of the...
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Tài liệu The General Theory of Employment, Interest, and Money docx

Tài liệu The General Theory of Employment, Interest, and Money docx

... increase (or decrease) the current scale of investment until the point of equality has been reached. But to make this into a theory of the rate of interest or to derive the rate of interest from ... for borrowing money for short periods in order to purchase debts of longer term. The market price will be fixed at the point at which the sales of the 'bears' and the purchases of the ... rate of interest, all of them being the reward for running the risk of uncertainty of one kind or another. Only in the event of money being used solely for transactions and never as a store of...
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 The general theory of employment interest and money (1936)

The general theory of employment interest and money (1936)

... degrees of risk, are quite properly regarded as the reward, not of waiting as such, but of running the risk. There is, in truth, no sharp line between these and the so-called “pure” rate of interest, ... mistake in the accepted theories of the rate of interest lies in their attempting to derive the rate of interest from the first of these two constituents of psychological time-preference to the neglect ... rate of interest, do not furnish material for a theory of the rate of interest; but they could be used to tell us what the level of income will be, given (from some other source) the rate of...
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