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1,403 Matching Results
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Unification of quantum theory and classical physics
A program is described for unifying quantum theory and classical physics on the basis of the Copenhagen-interpretation idea of external reality and a recently discovered classical part of the electromagnetic field. The program effects an integration of the intuitions of Heisenberg, Bohr, and Einstein.
Date:
July 1, 1985
Creator:
Stapp, Henry P.
Object Type:
Article
System:
The UNT Digital Library
Bergson and the unification of the sciences
Louis De Broglie and M. Capek have described some interesting similarities between the philosophical ideas of Henri Bergson and the profound conceptual changes introduced into physics by quantum theory and the theory of relativity. These similarities are neither identities nor direct causal links, and hence physicists are likely to regard them as mere curiosities having no import for the development of science. However, another view is possible: if Bergson's thinking presaged, at least in spirit, these two revolutionary advances in physics then his intuitions may accord sufficiently with nature to provide useful guidance in the approach to other deep problems in science. Pursuing this idea I shall indicate here how Bergson's intuitions suggest a possible approach to perhaps the fundamental problem of contemporary science, namely the problem of constructing an overarching theoretical framework for unifying the various branches of science from psychology through biology to physics. 19 refs.
Date:
February 1, 1985
Creator:
Stapp, Henry P.
Object Type:
Article
System:
The UNT Digital Library
Geometric perturbation theory and plasma physics
Modern differential geometric techniques are used to unify the physical asymptotics underlying mechanics, wave theory and statistical mechanics. The approach gives new insights into the structure of physical theories and is suited to the needs of modern large-scale computer simulation and symbol manipulation systems. A coordinate-free formulation of non-singular perturbation theory is given, from which a new Hamiltonian perturbation structure is derived and related to the unperturbed structure. The theory of perturbations in the presence of symmetry is developed, and the method of averaging is related to reduction by a circle group action. The pseudo-forces and magnetic Poisson bracket terms due to reduction are given a natural asymptotic interpretation. Similar terms due to changing reference frames are related to the method of variation of parameters, which is also given a Hamiltonian formulation. These methods are used to answer a question about nearly periodic systems. The answer leads to a new secular perturbation theory that contains no ad hoc elements. Eikonal wave theory is given a Hamiltonian formulation that generalizes Whitham's Lagrangian approach. The evolution of wave action density on ray phase space is given a Hamiltonian structure using a Lie-Poisson bracket. The relationship between dissipative and Hamiltonian systems is discussed. …
Date:
April 4, 1985
Creator:
Omohundro, S.M.
Object Type:
Report
System:
The UNT Digital Library
French Structuralism and its Contribution to Sociological Theory
This study delineates the basic concepts and analytical techniques of contemporary French structuralists, namely Levi-Strauss, Lacan, Barthes, Althusser, and Foucault, and critically examines the contribution of their formulations to sociological theory and the implication of such formulations on the methodological orientation in sociology.
Date:
August 1985
Creator:
Abderrahmane, Azzi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
An Investigation of Organizational Communication and Its Relationship to Two Organizational Models Involving Job Performance and Job Satisfaction
The correlates of organizational communication to other organizational constructs have been scarcely researched. Two constructs of interest to management researchers and practitioners are job performance and job satisfaction. This interest arises from the fact that the quality of organizational life and effectiveness may be determined by the quality of the two constructs. This study investigates the moderating influence of organizational communication on two models involving the variables of performance and satisfaction: (1) the relationship between performance and satisfaction and (2) the relationship between the congruence of the individual and the job with performance and satisfaction. Organizational communication is assessed in terms of ten dimensions: trust in superiors; influence of superiors; accuracy of information; desire for interaction; communication satisfaction; overload and underload information; and upward, downward, and lateral communication. Executives, research and middle management people, office workers, and manufacturing individuals from two firms provided the data for the study. An expected moderating influence was evaluated through differential validity or differential predictability, as appropriate, and moderated regression analysis. Organizational communication received very weak support as a moderator of both the relationship between the target variables of performance and satisfaction and the individual-job congruence association with the same target variables. Accuracy of information, …
Date:
August 1985
Creator:
Goris, Jose R. (Jose Rafael)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Summary for theory and general session at the RHIC detector workshop
The topics summarized include: cascade codes treating the components of nuclei as nucleons; a quark gluon cascade code; a treatment of shocks, detonation, and deflagration; putting finite density on the lattice as well as treating the phase transition at a finite critical temperature for vanishing density; theory for dilepton and photon signals and a treatment of the approach to equilibrium; the hydrodynamic evolution of the quark-gluon plasma; and QCD hydrodynamics. 13 refs., 7 figs.
Date:
January 1, 1985
Creator:
Kahana, S.
Object Type:
Article
System:
The UNT Digital Library
Theory and analysis of soft x-ray laser experiments
The atomic modeling of soft x-ray laser schemes presents a formidable challenge to the theorists - a challenge magnified by the recent successful experiments. A complex plasma environment with many ion species present must be simulated. Effects such as turbulence, time dependence, and radiation transport, which are very difficult to model accurately, may be important. We shall describe our efforts to model the recently demonstrated soft x-ray laser in collisionally pumped neon-like selenium, with emphasis on the ionization balance and excited state kinetics. The relative importance of various atomic processes, such as collisional excitation and dielectronic recombination, on the inversion kinetics will be demonstrated. We shall compare our models with experimental results and evaluate the success of this technique in predicting and analyzing the results of x-ray laser experiments. 22 refs., 5 figs., 3 tabs.
Date:
October 1, 1985
Creator:
Whitten, B.L. & Hazi, A.U.
Object Type:
Article
System:
The UNT Digital Library
The Relationship Between Leadership Style and Communication Satisfaction of Selected Principals in High Schools with an Enrollment of 125 to 265 Students
The purpose of this study was to determine the relationship between the leadership style of high school principals and their faculties' level of communication satisfaction. The study was also concerned with the relationship of the respondents' biographical data with leadership style and communication satisfaction. Subjects were selected from a population that consisted of thirty—two high schools in the North Central Texas Area. Each school that participated in the study had its faculty respond to the Communication Satisfaction Questionnaire and a teacher biographical data survey. Each school's principal responded to the Least Preferred Co—Worker Scale, principals' Communication Satisfaction Questionnaire, and a biographical data survey. The results were then analyzed using simple and multiple regression.
Date:
May 1985
Creator:
Monaco, James A. (James Anthony)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Application of electron-transfer theory to several systems of biological interest
Electron-transfer reaction rates are compared with theoretically calculated values for several reactions in the bacterial photosynthetic reaction center. A second aspect of the theory, the cross-relation, is illustrated using protein-protein electron transfers. 22 refs., 3 tabs.
Date:
January 1, 1985
Creator:
Marcus, R.A. & Sutin, N.
Object Type:
Article
System:
The UNT Digital Library
Computer Simulation of High Resolution Transmission Electron Micrographs: Theory and Analysis
Computer simulation of electron micrographs is an invaluable aid in their proper interpretation and in defining optimum conditions for obtaining images experimentally. Since modern instruments are capable of atomic resolution, simulation techniques employing high precision are required. This thesis makes contributions to four specific areas of this field. First, the validity of a new method for simulating high resolution electron microscope images has been critically examined. Second, three different methods for computing scattering amplitudes in High Resolution Transmission Electron Microscopy (HRTEM) have been investigated as to their ability to include upper Laue layer (ULL) interaction. Third, a new method for computing scattering amplitudes in high resolution transmission electron microscopy has been examined. Fourth, the effect of a surface layer of amorphous silicon dioxide on images of crystalline silicon has been investigated for a range of crystal thicknesses varying from zero to 2 1/2 times that of the surface layer.
Date:
March 1, 1985
Creator:
Kilaas, R.
Object Type:
Report
System:
The UNT Digital Library
The Use of Learning Theory in the Application of Artificial Intelligence to Computer-Assisted Instruction of Physics
It was the purpose of this research, to develop and test an artificially intelligent, learner-based, computer-assisted physics tutor. The resulting expert system is named ARPHY, an acronym for ARtificially intelligent PHYsics tutor. The research was conducted in two phases. In the first phase of the research, the system was constructed using Ausubel's advance organizer as a guiding learning theory. The content of accelerated motion was encoded into this organizer after sub-classification according to the learning types identified by Gagnds. The measurement of the student's level of learning was accomplished through the development of questioning strategies based upon Bloom's taxonomy of educational objectives. The second phase of this research consisted of the testing of ARPHY. Volunteers from four levels of first-semester physics classes at North Texas State University were instructed that their goal was to solve three complex physics problems related to accelerated motion. The only students initially instructed by ARPHY were from the class of physics majors. When the threshold values of the pedagogical parameters stabilized, indicating the fact that ARPHY's instructional technique had adapted to the class' learning style, students from other classes were tutored. Nine of the ten students correctly solved the three problems after being tutored for …
Date:
August 1985
Creator:
Brown, Stephen F. (Stephen Francis)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Theory, design, and operation of liquid metal fast breeder reactors, including operational health physics
A comprehensive evaluation was conducted of the radiation protection practices and programs at prototype LMFBRs with long operational experience. Installations evaluated were the Fast Flux Test Facility (FFTF), Richland, Washington; Experimental Breeder Reactor II (EBR-II), Idaho Falls, Idaho; Prototype Fast Reactor (PFR) Dounreay, Scotland; Phenix, Marcoule, France; and Kompakte Natriumgekuhlte Kernreak Toranlange (KNK II), Karlsruhe, Federal Republic of Germany. The evaluation included external and internal exposure control, respiratory protection procedures, radiation surveillance practices, radioactive waste management, and engineering controls for confining radiation contamination. The theory, design, and operating experience at LMFBRs is described. Aspects of LMFBR health physics different from the LWR experience in the United States are identified. Suggestions are made for modifications to the NRC Standard Review Plan based on the differences.
Date:
October 1, 1985
Creator:
Adams, S. R.
Object Type:
Report
System:
The UNT Digital Library
Transparent Metrology of Signal to Noise Ratios of Noisy Band-Limited Digital Signals
From abstract: I propose the use of a template method for quantitative, correct, and transparent measurement of signal power to additive noise power ratios (SNR) of digital signals and systems under full operating conditions. Outer guard chips of digital templates hold intersymbol interference fixed on inner target chips in realizations of the respective template patterns in traffic. The proposed template method needs to be developed and proven as a potentially valuable metrology capability; it can be especially important for real time online performance assessment and monitoring of digital communication systems.
Date:
June 1985
Creator:
Halford, Donald
Object Type:
Report
System:
The UNT Digital Library
Chaotic iteration and parallel divergence
Parallelization of standard multigroup methods used to solve the linear (Boltzmann) transport equation in the discrete ordinates (S/sub n/) representation, coupled chaotic iteration scheme, and convergence are the focus of this analysis. On the Denelcor HEP, we investigate the parallel extension of two serial iteration schemes, categorize speedup, and perform some numerical experiments in chaotic iteration.
Date:
January 1, 1985
Creator:
Wienke, B.R. & Hiromoto, R.E.
Object Type:
Article
System:
The UNT Digital Library
Linear-discontinuous Galerkin approximation for the continuous-slowing-down operator
A linear-discontinuous Galerkin treatment is developed for the continuous-slowing-down operator. Multigroup Legendre coefficients are derived which allow this treatment to be implemented in standard S/sub n/ codes. A synthetic acceleration scheme is developed to accelerate the outer iterations required by this treatment. A computational comparison between a first-order multigroup treatment, the diamond-difference treatment, and the linear-discontinuous treatment is given. 13 references, 6 figures.
Date:
January 1, 1985
Creator:
Lazo, M.S. & Morel, J.E.
Object Type:
Article
System:
The UNT Digital Library
An Empirical Investigation of the Complementary Value of a Statement of Cash Flows in a Set of Published Financial Statements
This research investigates the complementary value of a statement of cash flows (SCF) in a set of published financial statements. Selected accounting studies and selected parts of communication theory are used to argue the case for treating an SCF as a primary financial statement. Ideas adapted from communication theory are also used to decide key issues involved in developing an SCF. Specifically, the study selects a direct rather than a reconciling format for an SCF; it also defines cash to include currency, bank accounts, and marketable securities and exclude claims to cash such as notes and accounts receivable. The definition of cash limits cash flow to strict receipts and disbursements; it excludes constructive receipts and disbursements.
Date:
May 1985
Creator:
Allen, George Louis
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Research program with no ''measurement problem''
The ''measurement problem'' of contemporary physics is met by recognizing that the physicist participates when constructing and when applying the theory consisting of the formulated formal and measurement criteria (the expressions and rules) providing the necessary conditions which allow him to compute and measure facts, yet retains objectivity by requiring that these criteria, rules and facts be in corroborative equilibrium. We construct the particulate states of quantum physics by a recursive program which incorporates the non-determinism born of communication between asynchronous processes over a shared memory. Their quantum numbers and coupling constants arise from the construction via the unique 4-level combinatorial hierarchy. The construction defines indivisible quantum events with the requisite supraluminal correlations, yet does not allow supraluminal communication. Measurement criteria incorporate c, h-bar, and m/sub p/ or (not ''and'') G. The resulting theory is discrete throughout, contains no infinities, and, as far as we have developed it, is in agreement with quantum mechanical and cosmological fact.
Date:
July 1, 1985
Creator:
Noyes, H. P.; Gefwert, C. & Manthey, M. J.
Object Type:
Article
System:
The UNT Digital Library
T-expansion - a short review
The t-expansion is a nonperturbative calculational tool recently developed for Hamiltonian systems. A short review of the method is given. It is followed by a summary of applications to two dimensional spin systems and to four dimensional non-abelian lattice gauge theories. 5 refs., 3 figs.
Date:
September 1, 1985
Creator:
Karliner, M.
Object Type:
Article
System:
The UNT Digital Library
Syntactic Structures in Functional Tonality
Chapter I examines linguistic structures fundamental to most tasks of comprehension performed by humans. Chapter II proposes musical elements to be linguistic structures functioning within a musical symbol system (syntax). In this chapter, functional tonality is explored for systemic elements and relationships among these elements that facilitate tonal understanding. It is postulated that the listener's comprehension of these tonal elements is dependent on cognitive tasks performed by virtue of linguistic competence. Chapter III examines human information processing systems that are applicable both generally to human cognition and specifically to tonal comprehension. A pedagogy for listening skills that facilitate tonal comprehension is proposed in the fourth and final chapter and is based on information presented in preceding chapters.
Date:
August 1985
Creator:
Phelps, James, 1954-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
EPR: what has it taught us
This symposium commemorating the fiftieth anniversary of the paper of Einstein, Podolsky, and Rosen is a fitting place to review what that work and its sequels have taught us. Prima facie, the EPR paper appears to have been exceedingly counter-productive for the following reasons: (1) The work was quickly rebutted by Bohr, and this rebuttal was apparently accepted by most workers in the field. (2) Scientists who adopted the position advocated by Bohr have produced, in the intervening fifty years, a marvelous body of useful theory, whereas those following the course suggested by EPR have produced nothing of any certified practical value. (3) It has been shown by Bell that the conclusion reached by EPR is incompatible with their assumptions. Chemists and physicists have recently begun to examine the behavior of quantum mechanical systems that are very small, yet large enough to influence their environment in ways that appreciably modify their own behavior, vis-a-vis the behavior they would have if isolated. Because these systems are neither small enough to be treated as isolated (or as residing in a classically described environment) between preparation and detection, nor large enough to be treated classically, they do not conform to the format demanded …
Date:
May 1, 1985
Creator:
Stapp, Henry P.
Object Type:
Article
System:
The UNT Digital Library
Applications of quantum chromodynamics to hadronic and nuclear interactions
The application of perturbative QCD and light-cone Fock methods to the structure of hadrons and nuclei and their exclusive and inclusive interactions at short distances are reviewed.
Date:
August 1, 1985
Creator:
Brodsky, S.J. & Ji, C.R.
Object Type:
Article
System:
The UNT Digital Library
Monte Carlo Renormalization Group: a review
The logic and the methods of Monte Carlo Renormalization Group (MCRG) are reviewed. A status report of results for 4-dimensional lattice gauge theories derived using MCRG is presented. Existing methods for calculating the improved action are reviewed and evaluated. The Gupta-Cordery improved MCRG method is described and compared with the standard one. 71 refs., 8 figs.
Date:
January 1, 1985
Creator:
Gupta, R.
Object Type:
Article
System:
The UNT Digital Library
Measurement problem in Program Universe. Revision
The ''measurement problem'' of contemporary physics is in our view an artifact of its philosophical and mathematical underpinnings. We describe a new philosophical view of theory formation, rooted in Wittgenstein, and Bishop's and Martin-Loef's constructivity, which obviates such discussions. We present an unfinished, but very encouraging, theory which is compatible with this philosophical framework. The theory is based on the concepts of counting and combinatorics in the framework provided by the combinatorial hierarchy, a unique hierarchy of bit strings which interact by an operation called discrimination. Measurement criteria incorporate c, h-bar and m/sub p/ or (not ''and'') G. The resulting theory is discrete throughout, contains no infinities, and, as far as we have developed it, is in agreement with quantum mechanical and cosmological fact. 15 refs.
Date:
July 1, 1985
Creator:
Noyes, H. P.; Gefwert, C. & Manthey, M. J.
Object Type:
Article
System:
The UNT Digital Library
Applications guide to the MORSE Monte Carlo code
A practical guide for the implementation of the MORESE-CG Monte Carlo radiation transport computer code system is presented. The various versions of the MORSE code are compared and contrasted, and the many references dealing explicitly with the MORSE-CG code are reviewed. The treatment of angular scattering is discussed, and procedures for obtaining increased differentiality of results in terms of reaction types and nuclides from a multigroup Monte Carlo code are explained in terms of cross-section and geometry data manipulation. Examples of standard cross-section data input and output are shown. Many other features of the code system are also reviewed, including (1) the concept of primary and secondary particles, (2) fission neutron generation, (3) albedo data capability, (4) DOMINO coupling, (5) history file use for post-processing of results, (6) adjoint mode operation, (7) variance reduction, and (8) input/output. In addition, examples of the combinatorial geometry are given, and the new array of arrays geometry feature (MARS) and its three-dimensional plotting code (JUNEBUG) are presented. Realistic examples of user routines for source, estimation, path-length stretching, and cross-section data manipulation are given. A deatiled explanation of the coupling between the random walk and estimation procedure is given in terms of both code parameters …
Date:
August 1, 1985
Creator:
Cramer, S.N.
Object Type:
Report
System:
The UNT Digital Library