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*  Fine-structure constant - Wikipedia
String theory and other proposals for going beyond the Standard Model of particle physics have led to theoretical interest in ... It is clear that the explanation of this number must be the central problem of natural philosophy. I. J. Good (1990). "A ... then any experiment should show that Δ α α = d e f α p r e v − α n o w α n o w = 0 {\displaystyle {\frac {\Delta \alpha }{\ ... for particular models. This suggests that the statistical uncertainties and best estimate for Δ α / α {\displaystyle \Delta \ ...
  https://en.wikipedia.org/wiki/Fine-structure_constant
*  T-duality - Wikipedia
Like many of the dualities studied in theoretical physics, T-duality was discovered in the context of string theory. In string ... The pictures above show curves with winding numbers between −2 and 3: The simplest theories in which T-duality arises are two- ... dimensional sigma models with circular target spaces. These are simple quantum field theories that describe propagation of ... doi:10.1016/0550-3213(96)00434-8. Witten, Edward (March 13-18, 1995). "Some problems of strong and weak coupling". Proceedings ...
  https://en.wikipedia.org/wiki/T-duality
*  Audio | Pacific Institute for the Mathematical Sciences - PIMS
PIMS Pacific Northwest Seminar on String Theory. Tachyon condensation in open string field theory Washington Taylor MIT Date: ... We will show that these problems are intimately connected to certain Poincare type inequalities on graph metrics, and we will ... Our work can be seen as 'theoretical' in the sense that we attempt to develop new models to elucidate the most important ... Pacific Northwest String Theory Seminar. Non-commutative Space And Chan-Paton Algebra in Open String Field Algebra Kazuyuki ...
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*  Quantum chromodynamics - Wikipedia
On composite models in the theory of elementary particles. JINR Preprint D-1968, Dubna 1965. A. Tavkhelidze. Proc. Seminar on ... For specific problems effective theories may be written down which give qualitatively correct results in certain limits. In the ... In theoretical physics, quantum chromodynamics (QCD) is the theory of the strong interaction between quarks and gluons, the ... short-distance particle limit and the confining long-distance limit is one of the topics recently explored using string theory ...
  https://en.wikipedia.org/wiki/Quantum_chromodynamics
*  Quantum gravity - Wikipedia
Schwarz, John H. (2007). "String Theory: Progress and Problems". Progress of Theoretical Physics Supplement. 170: 214-226. ... and the candidate models still need to overcome major formal and conceptual problems. They also face the common problem that, ... However, recent developments attempt to show that if locality is only approximate and the holographic principle is correct, the ... String theory can be seen as a generalization of quantum field theory where instead of point particles, string-like objects ...
  https://en.wikipedia.org/wiki/Quantum_gravity
*  Download Biztalk 2010 Recipes: A Problem Solution Approach 2010
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*  Why is the violin so hard to play? | plus.maths.org
A plucked string, like that on a guitar, can be described by linear systems theory. The essential feature of a linear system is ... In a curiously circular way these theoretical models are also being used directly to make music. As computers have got faster ... String vibrato. Permalink Submitted by Anonymous on December 23, 2012 "Anonymous" is incorrect--studies show that vibrato goes ... There are problems that are easy to solve in theory, but impossible to solve in practice. Intrigued? Then join us on a journey ...
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*  Computational complexity theory - Wikipedia
The input string for a computational problem is referred to as a problem instance, and should not be confused with the problem ... To show an upper bound T(n) on the time complexity of a problem, one needs to show only that there is a particular algorithm ... The theory formalizes this intuition, by introducing mathematical models of computation to study these problems and quantifying ... Computational complexity theory is a branch of the theory of computation in theoretical computer science that focuses on ...
  https://en.wikipedia.org/wiki/Computational_complexity_theory
*  The poverty of embodied cognition | SpringerLink
... a multifaceted theoretical proposition that (1) cognitive processes are influenced by the body, (2) cognition exists in... ... Problems can arise, however, because strong theoretical claims may appear reasonable when confined to specific domains but ... Hintzman, D. L. (1991). Why are formal models useful in psychology? In W. E. Hockley & S. Lewandowsky (Eds.), Relating theory ... Whereas high-frequency words show advantages in perception, low-frequency words show advantages in recognition memory. Because ...
  https://link.springer.com/article/10.3758%2Fs13423-015-0860-1
*  Search Results - - 495 Results - Digital Library
Description: Contributions to the masses of the gauginos in models arising as low energy limits of superstring theories are ... The effect is predicted both by QCD and by phenomenological string models. 5 refs., 5 figs. ... Two cases were studied, namely, a canister-scale problem, a repository-wide thermal convection problem, and different pore ... We show that the latter triggers are biased in that they select events with unusually large bremstrahlung effects. We suggest ...
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*  Hagelin - Is Consciousness the Unified Field a Field Theorist's Perspective | Field (Physics) | Quantum Mechanics
an underlying string field. For example, in the E X E heterotic string theory, the graviton and gravitino correspond to ' ... stochastic models say little about the nature of this underlying background field. As a theoretical framework for modeling the ... One clue to the solution to this problem is that the formal behavior of the theory is improved if all the force and matter ... since they would be expected to show up first in today's particle accelerators. According to theoretical and experimental ...
  https://www.scribd.com/document/78943243/Hagelin-Is-Consciousness-the-Unified-Field-a-Field-Theorist-s-Perspective
*  Reticular alignment: A progressive corner-cutting method for multiple sequence alignment | BMC Bioinformatics | Full Text
Sankoff D, Cedergren RJ: Time Warps, String Edits, and Macromolecules: The Theory and Practice of Sequence Comparison. Addison- ... There are two major technical hurdles in the multiple sequence alignment problem. The first is the scoring problem: how to ... Here we show a variant of the algorithm that our method is based on. The algorithm is built up of 3 parts: a forward-align ... Probabilistic models of proteins and nucleic acids. Cambridge University Press; 1998.View ArticleGoogle Scholar. ...
  https://bmcbioinformatics.biomedcentral.com/articles/10.1186/1471-2105-11-570
*  Music theory - Wikipedia
The theory, which models musical transformations as elements of a mathematical group, can be used to analyze both tonal and ... musicians adopted Western theory as an international standard-but other theoretical traditions in both textual and oral ... One of these layers could be a string section, or another brass. The thickness also is affected by the amount and the richness ... However, this is only a problem when the intervals are either a perfect fifth or a perfect octave. These also can sound ...
  https://en.wikipedia.org/wiki/Music_theory
*  Chronology of the universe - Wikipedia
See above regarding the quark-gluon plasma, under the String Theory epoch.) However, there is strong indirect evidence that the ... Models attempting to formulate processes of the Planck epoch are speculative proposals for "New Physics". Examples include the ... At this point non-linear structures begin to form, and the computational problem becomes much more difficult, involving, for ... and studies announced in 2008 show that due to tidal interaction between Sun and Earth, Earth would actually fall back into a ...
  https://en.wikipedia.org/wiki/Chronology_of_the_universe
*  Paul Steinhardt - Wikipedia
... a basic object in string theory). But more recent versions do not require extra dimensions or string theory; instead, quantum ... Earlier cyclic-type cosmological models had an entropy problem that the new cyclic model evades. According to the second law of ... no other theoretical physicist alive who has a clearer focus on whether our theories and ideas are relevant to the real world. ... He also co-authored the first paper to show that, based on observations at the time, most of the energy in the universe must be ...
  https://en.wikipedia.org/wiki/Paul_Steinhardt
*  Philosophy of mathematics - Wikipedia
Reprinted, "On the Foundations of Set Theory and the Continuum Problem", Stefan Bauer-Mengelberg (trans.), pp. 145-149 in Jean ... Hilbert aimed to show the consistency of mathematical systems from the assumption that the "finitary arithmetic" (a subsystem ... The main critique of formalism is that the actual mathematical ideas that occupy mathematicians are far removed from the string ... Not surprisingly, then, this approach to mathematics is sometimes associated with theoretical computer science. Like ...
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*  Download The Poison Tree
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*  Search Results - - 233 Results - Digital Library
Supersymmetry breaking in string theory Description: I briefly review the problems with previous investigations of ... Gauge invariant actions for string models Description: String models of unified interactions are elegant sets of Feynman rules ... Having trouble finding an option within the list of Years? Start typing and we'll update the list to show only those items that ... We argue on theoretical grounds that is indeed the most plausible general behaviour. 19 refs., 12 figs. ...
  https://digital.library.unt.edu/search/?q5=%22Extended%20Particle%20Model%22&t5=dc_subject&searchType=advanced
*  String theory - Wikipedia
In addition to being an idea of considerable theoretical interest, string theory provides a framework for constructing models ... String theory has been applied to a variety of problems in black hole physics, early universe cosmology, nuclear physics, and ... In particular, they used mirror symmetry to show that a six-dimensional Calabi-Yau manifold can contain exactly 317,206,375 ... Not Even Wrong-A blog critical of string theory The Official String Theory Web Site Why String Theory-An introduction to string ...
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*  Modern synthesis (20th century) - Wikipedia
Die transspezifische Evolution [Newer Problems of Evolutionary Theory: The trans-specific Evolution] (in German). Stuttgart: ... The theoretical biologist and philosopher of biology Joseph Henry Woodger led the introduction of positivism into biology with ... His work on natural selection in wild populations of butterflies and moths was the first to show that predictions made by R. A ... Further, Dobzhansky asserted that evolution was based on material genes, arranged in a string on physical hereditary structures ...
  https://en.wikipedia.org/wiki/Modern_synthesis_(20th_century)
*  Commentary Magazine -- September 1996
Shapiro now feels compelled to commend theories of self-organization and complexity as solutions to the problems that vex us. ... Thus, a string of randomly strung-out 0's and 1's cannot be generated by a shorter string; they are what they are, and in ... I am unimpressed by computer models demonstrating punctuated equilibrium, whether elegantly or not. A typical problem in ... my criticisms are again intended to show that the theory is deficient if only because it fails to meet its own standards for ...
  http://www.2think.org/letters.shtml
*  Download Lonely Planet Western Usa 2016
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*  Speech perception - Wikipedia
Computer models of the fuzzy logical theory have been used to demonstrate that the theory's predictions of how speech sounds ... findings and problems". In Winifred Strange. Speech perception and linguistic experience: Theoretical and methodological issues ... If a subject who is a monolingual native English speaker is presented with a stimulus of speech in German, the string of ... If the baby perceives the newly introduced stimulus as different from the background stimulus the sucking rate will show an ...
  https://en.wikipedia.org/wiki/Speech_perception
*  Richard Phillips Feynman facts, information, pictures | Encyclopedia.com articles about Richard Phillips Feynman
Feynman's theory was especially distinct from the other two in its use of graphic models to describe the intermediate states ... These models are known as "Feynman diagrams" and are widely used in the analysis of problems involving pair production, Compton ... After a string of successes, Einstein's elegant theory had fallen from most physicists' attention by the 1930s, displaced by ... The theoretical work of the American physicist Richard Phillips Feynman (1918-1988) opened up the doors to research in quantum ...
  https://www.encyclopedia.com/people/science-and-technology/physics-biographies/richard-phillips-feynman