Resource Type
Serial/Series Title
Atomic Energy Commission Reports
397
Argonne National Laboratory Reports
334
United States Geological Survey Reports
191
National Bureau of Standards Reports
186
AEC research and development report
159
TID
154
United States Bureau of Mines Reports
144
Oak Ridge National Laboratory Reports
131
ORNL (Series)
105
NBS monograph
92
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Application of statistical theory to beam-rider guidance in the presence of noise 1: Wiener filter theory
Report presenting a study of the application of Wiener filter theory to the design of a beam-rider guidance system operating in the presence of glint noise. The theory is then used to establish the theoretical lower limit of root-mean-square error and the corresponding desired transfer-function characteristics.
Date:
August 23, 1955
Creator:
Stewart, Elwood C.
Object Type:
Report
System:
The UNT Digital Library
A Study of Hypersonic Small-Disturbance Theory
"A systematic study is made of the approximate inviscid theory of thin bodies moving at such high supersonic speeds that nonlinearity is an essential feature of the equations of flow. The first-order small-disturbance equations are derived for three-dimensional motions involving shock waves, and estimates are obtained for the order of error involved in the approximation. The hypersonic similarity rule of Tsien and Hayes, and Hayes' unsteady analogy appear in the course of the development" (p. 1).
Date:
1954
Creator:
Van Dyke, Milton D.
Object Type:
Report
System:
The UNT Digital Library
On the Theory of the Propagation of Detonation in Gaseous Systems
"The existing theory of detonation is critically examined. It is shown that the considerations with which the steady value of the velocity of detonation is chosen are not convincing. In connection with the problem of the process of the chemical reaction in a detonation wave, the objections raised against the conceptions of Le Chatelier and Vieille of the 19th century with regard to the ignition of the gas by the shock wave are refuted" (p. 1).
Date:
November 1950
Creator:
Zeldovich, Y. B.
Object Type:
Report
System:
The UNT Digital Library
Linearized Supersonic Theory of Conical Wings
Report presenting the theory of conical flow and its application to conical aircraft wings. Following an explanation of the theory, several types of wings are analyzed and compared with each other.
Date:
January 1950
Creator:
Lagerstrom, P. A.
Object Type:
Report
System:
The UNT Digital Library
On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory
Report discussing the relationship between quantum field theory and the the statistical theory of waves. Basic equations exist in the latter theory which correspond closely to the fundamental equations of the former theory; i.e., to the commutation relations and the Heisenberg equation of motion. A probability density function of waves is introduced here which corresponds to the probability amplitude function in quantum mechanics. The theory of the statistical Green's functions and their relationships to the expectation values of the physical variables is also extensively developed. It is found that there exists a one-to-one correspondence between the formalism of Green's functions presented here and that used in field theory.
Date:
December 7, 1964
Creator:
Furutsu, K.
Object Type:
Report
System:
The UNT Digital Library
A Study of Lunar Surface Radio Communication
Report discussing the problem of point-to-point radio communication on the moon. Equations and curves are presented to estimate power requirements in lunar communication systems. Consideration is given to ground wave attenuation over both layered and non-layered grounds, antenna ground losses in situations where ground screens are impractical, noise level estimates in the receiving system, and the effects on propagation of possible lunar ionospheres. An example of the calculation of required power for a particular communication system is given, and further studies are suggested.
Date:
September 14, 1964
Creator:
Vogler, L. E.
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
Time and Frequency: Theory and Fundamentals
From Abstract: "This is a tutorial Monograph describing various aspects of time and frequency (T/F). Included are chapters relating to elemental concepts of precise time and frequency; basic principles of quartz oscillators and atomic frequency standards; historical review, recent progress, and current status of atomic frequency standards; promising areas for developing future primary frequency standards; relevance of frequency standards to other areas of metrology including a unified standard concept; statistics of T/F data analysis coupled with the theory and construction of the NBS atomic time scale; an overview of T/F dissemination techniques; and the standards of T/F in the USA. The Monograph addresses both the specialist in the field as well as those desiring basic information about time and frequency."
Date:
May 1974
Creator:
Blair, Byron E.
Object Type:
Report
System:
The UNT Digital Library
Theory and Application of Expert Systems in Emergency Management Operations
Abstract: The First Symposium on The Theory and Application of Expert Systems in Emergency Management, held at the Department of Commerce, Washington, D.C. (April 24 and 25, 1985) was funded by the Federal Emergency Management Agency and organized by the National Bureau of Standards' Operations Research Division. The purpose of the symposium was to bring together researchers in expert systems, artificial intelligence, and emergency operations in a forum to review the concepts of expert systems and the problems of emergency management, with the objective of determining how expert systems can be used to augment the experience of local, State and Federal emergency managers faced with the difficult tasks of determining the best response to an emergency situation. Speakers addressed the following areas: The theory and uncertainty aspects of expert systems, artificial intelligence's future role in emergency management, technology for building and using expert systems, emergency management decisions and information needs and uses, applications of expert systems in the management of chemical spills and shipboard and coal mine fires, and the role and use of simulation in emergency management expert systems.
Date:
November 1986
Creator:
Gass, Saul I. & Chapman, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Toward a Methodology for Complexity Management
This report focuses on the Battle Management/Command, Control, and Communication (BM/C³) element of the Global Protection Against Limited Strike (GPALS) system. The approach is based on the development and validation of a generic BM/C³ model. Central to the approach is the tenet that the design is divided into multiple layers. The critical functions make up the bottom layer, where trust is established and significant design effort is required.
Date:
December 1992
Creator:
Chisholm, G. H.
Object Type:
Report
System:
The UNT Digital Library
Hydrogen Stark Broadening Calculations With the Unified Classical Path Theory
Report discussing the case of upper and lower state interaction introduced by a unified theory using a more compact tetradic notation. The general result is then applied to the Stark broadening of hydrogen. The thermal average of the time development operator for upper and lower state interaction is presented. A simple technique for evaluating the Fourier transform of the thermal average has been developed. The final calculations based on the unified theory and on the one-electron theory are compared with measurements in the high and low electron density regime.
Date:
May 1970
Creator:
Vidal, C. R.; Cooper, J. & Smith, E. W.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the Focused Research Program on Spectral Theory and Boundary Value Problems, Vol. 4: Nonlinear Differential Equations
Report on the asymptotic behavior of certain generalized solutions of the problem of the prescribed mean curvature equation.
Date:
August 1989
Creator:
Kaper, H. G.; Kwong, Man Kam & Zettl, Anton
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the Focused Research Program on Spectral Theory and Boundary Value Problems, Vol. 1: Singular Differential Systems
Report on the development of square integrable solutions for Hamiltonian systems in all cases, including intermediate cases.
Date:
December 1987
Creator:
Kaper, H. G.; Kwong, Man Kam & Zettl, Anton
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the Focused Research Program on Spectral Theory and Boundary Value Problems, Vol. 2: Singular Differential Equations
Report on research and exchange of views among 24 mathematicians for investigations of the theory of singular Sturm-Liouville equations, the asymptotic analysis of the Titchmarsh-Weyl m(λ)-coefficient, and the qualitative theory of non-linear differential equations.
Date:
September 1988
Creator:
Kaper, H. G.; Kwong, Man Kam & Zettl, Anton
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the Focused Research Program on Spectral Theory and Boundary Value Problems, Vol. 3: Linear Differential Equations and Systems
The third volume of a series of reports containing the proceedings of the Focused Research Program on "Spectral Theory and Boundary Value Problems."
Date:
April 1989
Creator:
Kaper, H. G.; Kwong, Man Kam & Zettl, Anton
Object Type:
Report
System:
The UNT Digital Library
Spectral Theory of Sturm-Liouville Differential Operators: Proceedings of the 1984 Workshop. Held at Argonne National Laboratory May 15 - June 15, 1984
This report contains the proceedings of the workshop which was held at Argonne during the period May 14 through June 15, 1984. The report contains 22 articles, authored or co-authored by the participants in the workshop. Topics covered at the workshop included the asymptotics of eigenvalues and eigenfunctions; qualitative and quantitative aspects of Sturm-Liouville eigenvalue problems with discrete and continuous spectra; polar, indefinite, and non-self-adjoint Sturm-Liouville eigenvalue problems; and systems of differential equations of Sturm-Liouville type.
Date:
December 1984
Creator:
Kaper, H. G.; Zettl, Anton & Pieper, Gail W.
Object Type:
Report
System:
The UNT Digital Library
Theory of Ionization by Electron Collisions
The problem of calculating comprehensive sets of cross sections for ionization of atoms and molecules is reviewed. Emphasis is put on targets that are already ionized and lower-energy collisions for which the incident electron must be treated on a par with target electrons. The physical circumstances are discussed in which perturbation methods should be adequate, and special investigations are recommended to identify the relevant ranges of parameters more precisely and dependably. A new R-matrix approach is outlined which should permit rather simple, approximate, but dependable calculations when the perturbation methods fail.
Date:
June 1976
Creator:
Fano, Ugo & Inokuti, Mitio
Object Type:
Report
System:
The UNT Digital Library
Electronic Energy Levels And Crystal Quantum States Of Tm (IV)
To date limited agreement has been obtained between theory and experiment for 4f to 4f transitions for Tm (IV) (4f12). It is clear from the considerations that have appeared so far in the literature that intermediate coupling is important in the case of Tm (IV). Solutions of the intermediate field equations yield [formula], and [formula]. Experimental agreement to [formula] was obtained.
Date:
August 1959
Creator:
Gruber, John B. & Conway, John G.
Object Type:
Report
System:
The UNT Digital Library
A Theory of Program Correctness, and Algorithms for Proofs
A model of program correctness is given where a problem domain is defined by its language, variable names, and an abstract machine defining the semantics of the language. The set of all computations in this domain is shown to be a semigroup. A corresponding statement is true of a more general programming language. A program P in the general language is an element of the semigroup. If P performs computations in some domain, a connection can be established between P and the semigroup of computations in that domain. Methods already used in proofs about hardware are shown to be useful in proofs about this software model. The paradigm is capable of reasoning about multiprocessor hardware and of ''proving'' theorems about execution times, that is, ''performance.''
Date:
January 1987
Creator:
Gabriel, John R.; Chapman, Richard O. & Kljaich, J. L.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the Workshop on Foundations of the Relativistic Theory of Atomic Structure : Held at Argonne National Laboratory, December 4-5, 1980
Although the Dirac theory of the hydrogen atom was proposed more than half a century ago, extension of the theory and its practical applications to complex atomic spectra took decades to mature. Development of quantum electrodynamics (QED) in its modern form, advances in high precision experimental techniques, and invention of high-speed computers have made atomic spectroscopy one of the most accurate branches of physics today, both in theory and experiment. In addition to a long-standing need to identify line-spectra coming from far and near parts of the universe, necessities such as to test QED further and to provide reliable data for ions in tokamak plasmas require an understanding of the theory of relativistic atomic structure beyond the framework of the original Dirac theory. Twenty articles from the proceedings of the workshop are presented. Contributed papers are grouped into theoretical and experimental subjects and presented after the papers for the second (atomic structure calculations) and third (experiment) sessions of the Workshop. Alphabetical listing of the authors is presented in Appendix 1, program of the Workshop in Appendix 2, and the list of the participants in Appendix 3.
Date:
March 1981
Creator:
Berry, H. G.; Cheng, K. T.; Johnson, W. R. & Kim, Yong-Ki
Object Type:
Report
System:
The UNT Digital Library
Research and Development in the Computer and Information Sciences: [Part] 1. Information Acquistion, Sensing, and Input: A Selective Literature Review
From Introduction: "This report is the first of a series intended to provide a selective overview of research and development efforts and requirements in the somewhat overlapping fields of the computer and information sciences and technologies. The projected series of reports will attempt to outline the probable range of R & D activities in the computer and information sciences and technologies through selective reviews of the literature and to develop a reasonable consensus with respect to the opinions of workers in these and potentially related fields as to areas of continuing R & D concern for research program planning or review in these areas."
Date:
March 1970
Creator:
Stevens, Mary Elizabeth
Object Type:
Report
System:
The UNT Digital Library
Plane-Wave Scattering-Matrix Theory of Antennas and Antenna-Antenna Interactions
From Abstract: "This monograph is distinguished by the use of plane-wave spectra for the representation of fields in space and by the consideration of antenna-antenna (antenna-scatterer) interactions at arbitrary separation distances." From Preface: "The primary objective of this monograph is to facilitate the critical acceptance and proper application of antenna and field measurement techniques deriving more or less directly from the plane-wave scattering matrix (PWSM) theory of antennas and antenna-antenna interactions. A second objective is to present some recent and some new theoretical results based on this theory."
Date:
June 1981
Creator:
Kerns, David M.
Object Type:
Report
System:
The UNT Digital Library
Some Computational Methods for the Study of Diatomic Molecules
"The present work describes some computer-oriented techniques for the application of the laws of quantum mechanics to the problems of determining basic structure of diatomic molecules. At times, calculations of the type described here yield results which can be compared directly with experiment to check the validity of the hypotheses and technique used they may predict the results of unobserved experimental phenomena; and, in many instances, they provide quantities which are necessary for the interpretation of experimental data but which cannot be directly measured."
Date:
May 1, 1961
Creator:
Cooley, James W.
Object Type:
Report
System:
The UNT Digital Library
Applications of Waveguide and Circuit Theory to the Development of Accurate Microwave Measurement Methods and Standards
Report issued by the Bureau of Standards over "the basic theory and analytical methods used in the development of accurate microwave measurement methods and standards" (p. x). These methods are presented and discussed. This report includes tables, illustrations, and photographs.
Date:
August 1973
Creator:
Beatty, R. W.
Object Type:
Report
System:
The UNT Digital Library