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Computer graphics for extracting information from data

Description: Computer graphics which are useful for displaying and analyzing data are presented. Many classical and several newly developed graphical techniques in statistical data analysis are presented for small univariate and multivariate data sets. These include histograms, empirical density functions, pie charts, contour plots, a discriminant analysis display, cluster analysis, Chernoff ''faces,'' Andrews' sine curves, three-dimensional plots, and probability plots. Recent advances in data collection t… more
Date: January 1, 1978
Creator: Lohrding, R. K.; Johnson, M. M. & Whiteman, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Monte-Carlo approach to the generation of adversary paths

Description: This paper considers the definition of a threat as the sequence of events that might lead to adversary success. A nuclear facility is characterized as a weighted, labeled, directed graph, with critical adversary paths. A discrete-event, Monte-Carlo simulation model is used to estimate the probability of the critical paths. The model was tested for hypothetical facilities, with promising results. (DLC)
Date: January 1, 1977
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Review of issues relevant to acceptable risk criteria for nuclear waste management

Description: Development of acceptable risk criteria for nuclear waste management requires the translation of publicly determined goals and objectives into definitive issues which, in turn, require resolution. Since these issues are largely of a subjective nature, they cannot be resolved by technological methods. Development of acceptable risk criteria might best be accomplished by application of a systematic methodology for the optimal implementation of subjective values. Multi-attribute decision analysis … more
Date: February 22, 1978
Creator: Cohen, J.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of density estimators. [Estimation of probability density functions]

Description: Recent work in the field of probability density estimation has included the introduction of some new methods, such as the polynomial and spline methods and the nearest neighbor method, and the study of asymptotic properties in depth. This earlier work is summarized here. In addition, the computational complexity of the various algorithms is analyzed, as are some simulations. The object is to compare the performance of the various methods in small samples and their sensitivity to change in their… more
Date: September 1, 1977
Creator: Kao, S. & Monahan, J.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Meteorological evaluation of multiple reactor contamination probabilities for a Hanford Nuclear Energy Center

Description: The conceptual Hanford energy center is composed of nuclear power plants, hence the name Hanford Nuclear Energy Center (HNEC). Previous topical reports have covered a variety of subjects related to the HNEC including: electric power transmission, fuel cycle, and heat disposal. This report discusses the probability that a radiation release from a single reactor in the HNEC would contaminate other facilities in the center. The risks, in terms of reliability of generation, of this potential contam… more
Date: March 1, 1978
Creator: Ramsdell, J.V. & Diebel, D.I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear chemistry progress report. [Physics Department, Princeton University]

Description: Research in the physics department at Princeton University is reviewed briefly. Results on the Coulomb capture of negative muons by the binary alloy systems Cu/Al and Ag/Zn show that (within experimental error) there is no change in the per atom ..mu../sup -/ capture probability when the atomic ratio in these alloys varies over a range of approximately 40. The K muonic x-ray intensity pattern observed from ..mu.. capture in atmospheric N/sub 2/ was strikingly different from that observed when .… more
Date: January 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laser-excited fluorescence spectroscopy of oxide glasses

Description: Laser-induced fluorescence line narrowing was applied to investigate the local fields and interactions of paramagnetic ions in oxide glasses. Studies included the site dependence of energy levels, radiative and nonradiative transition probabilities, homogeneous line broadening, and ion--ion energy transfer of rare earth ions. These results and the experimental techniques are reviewed briefly; the use of paramagnetic ions other than the rare earths is also considered. Recently, laser-excited flu… more
Date: June 1, 1977
Creator: Weber, M. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effects seen in the interactions of fast molecular-ion beams with matter. [Angular distributions, dissociation, polorization, energy losses, transmitted fractions]

Description: Experimental results are presented from high resolution studies of the energy- and angle-distributions for the break-up products that arise from the dissociation of a variety of fast molecular ions in thin carbon foils and in gases. The results for foil targets are compared with calculations based on a model for the polarization ''wakes'' induced in foils by the passage of fast charged projectiles. An example is given of the application of this type of dissociation measureme… more
Date: January 1, 1977
Creator: Gemmell, D. S.; Cooney, P. J.; Pietsch, W. J.; Ratkowski, A. J.; Vager, Z.; Zabransky, B. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Uncertainty associated with selected environmental transport models

Description: A description is given of the capabilities of several models to predict accurately either pollutant concentrations in environmental media or radiological dose to human organs. The models are discussed in three sections: aquatic or surface water transport models, atmospheric transport models, and terrestrial and aquatic food chain models. Using data published primarily by model users, model predictions are compared to observations. This procedure is infeasible for food chain models and, therefor… more
Date: November 1, 1979
Creator: Little, C. A. & Miller, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MACRO1: a code to test a methodology for analyzing nuclear-waste management systems

Description: The code is primarily a manager of probabilistic data and deterministic mathematical models. The user determines the desired aggregation of the available models into a composite model of a physical system. MACRO1 then propagates the finite probability distributions of the inputs to the model to finite probability distributions over the outputs. MACRO1 has been applied to a sample analysis of a nuclear-waste repository, and its results compared satisfactorily with previously obtained Monte Carlo… more
Date: December 14, 1979
Creator: Edwards, L.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Signatures of Coulomb fission: a theoretical study

Description: Evidence for Coulomb fission (CF) is noted first. Then the Hamiltonian is set down and explained, and an expression for the CF probability of CF is obtained. Results are summarized. Figures show the CF probability of /sup 238/U as a function of projectile charge number and the excitation functions for CF of /sup 238/U by /sup 184/W and /sup 136/Xe. 3 figures. (RWR)
Date: January 1, 1979
Creator: Oberacker, V.; Kruse, H.; Pinkston, W.T. & Greiner, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Rainout assessment: the ACRA system and summaries of simulation results. [Computer systems to estimate threats from precipitation scavenging of radioactive debris clouds from nuclear weapons]

Description: A generalized, three-dimensional, integrated computer code system was developed to estimate collateral-damage threats from precipitation-scavenging (rainout) of airborne debris-clouds from defensive tactical nuclear engagements. This code system, called ACRA for Atmospheric-Contaminant Rainout Assessment, is based on Monte Carlo statistical simulation methods that allow realistic, unbiased simulations of probabilistic storm, wind, and precipitation fields that determine actual magnitudes and pr… more
Date: September 1, 1977
Creator: Watson, C. W.; Barr, S. & Allenson, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Statistical model for assessing the risk of hail damage to any ground installation. Technical report, June 1978-March 1979

Description: This report describes a statistical model which has been developed to determine the risk of damage by large hail to any ground installation (such as a solar flat plate collector). The model is based on data for the number of haildays per year, hailstone size distribution, and storm severity (expressed in number of hailstones per square meter per storm). Other than parameters derived from the raw meteorological data available, the parameters of the model are the number of years of surface exposu… more
Date: September 1, 1979
Creator: Cox, M & Armstrong, P R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Example of Monte Carlo analysis applied to repository siting

Description: This report contains a detailed description of a Monte Carlo analysis of a hypothetical nuclear waste repository performed for the Lawrence Livermore Laboratory as part of their mock siting exercise. Field measurements had been used to construct a hydrology model of the geologic medium surrounding a nuclear waste repository, complete with specified uncertainties. The Monte Carlo analysis has been used to ascertaln the uncertainty in the radioactive release from the repository given the uncertai… more
Date: August 31, 1979
Creator: Giuffre, M.S. & Kaplan, M.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PROSA-1 : a Probabilistic Response-Surface Analysis Code

Description: Techniques for probabilistic response-surface analysis have been developed to obtain the probability distributions of the consequences of postulated nuclear-reactor accidents. The uncertainties of the consequences are caused by the variability of the system and model input parameters used in the accident analysis. Probability distributions are assigned to the input parameters, and parameter values are systematically chosen from these distributions. These input parameters are then used in determ… more
Date: June 1978
Creator: Vaurio, J. K.; Mueller, C.; Kyser, J. M. & Sciaudone, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Possible Event of Charmed Particle Decay via the (Weak) Neutral Current According to a Scheme M(c) --> e+ e- Hadrons

Description: In a stack of nuclear emulsion irradiated by 200 Gev/c {pi}{sup -}-mesons at FNAL, we have made a search for new short-lived particles by tracing all secondary tracks from the star in a cone of 0 < 0,1 rad up to the distance of 1 mm. The sample of stars consisted of 350 {pi}{sup -} N- and 250 {pi}{sup -} A-interactions. They have found one peculiar event. Among {pi}{sup -} A-interactions there is star of type 21 + 6 + 23 p in which one secondary prong (0{sub L} = 4,6{sup o}) gives at the dis… more
Date: June 1, 1978
Creator: Chernyavsky, M. M.; Komar, A. A.; Orlova, G. I. & Tretyakova, M. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Notes for a workshop on risk analysis and decision under uncertainty. The practical use of probabilistic and Bayesian methodology inreal life risk assessment and decision problems

Description: The use of probabilistic, and especially Bayesian, methods is explained. The concepts of risk and decision, and probability and frequency are elucidated. The mechanics of probability and probabilistic calculations is discussed. The use of the method for particular problems, such as the frequency of aircraft crashes at a specified nuclear reactor site, is illustrated. 64 figures, 20 tables. (RWR)
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Confidence level in the calculations of HCDA consequences using large codes. [LMFBR]

Description: The probabilistic approach to nuclear reactor safety is playing an increasingly significant role. For the liquid-metal fast breeder reactor (LMFBR) in particular, the ultimate application of this approach could be to determine the probability of achieving the goal of a specific line-of-assurance (LOA). Meanwhile a more pressing problem is one of quantifying the uncertainty in a calculated consequence for hypothetical core disruptive accident (HCDA) using large codes. Such uncertainty arises fro… more
Date: April 20, 1979
Creator: Nguyen, D. H. & Wilburn, N. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Crossed beam reactive scattering of oxygen atoms and surface scattering studies of gaseous condensation

Description: A high pressure, radio frequency discharge nozzle beam source was developed for the production of very intense (greater than or equal to 10/sup 18/ atoms sr/sup -1/ sec/sup -1/) supersonic beams of oxygen atoms. This source is capable of producing seeded beams of ground state O(/sup 3/P/sub J/) atoms when dilute oxygen-argon mixtures are used, with molecular dissociation levels exceeding 80% being realized for operation at pressures up to 350 torr. When dilute oxygen-helium mixtures are employe… more
Date: September 1, 1979
Creator: Sibener, S.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

General reliability and safety methodology and its application to wind energy conversion systems

Description: In conventional system reliability calculations, each component may be in the Operable state or the Under Repair state. These calculations derive system unavailability, or the probability of the system's being down for repairs. By introducing a third component state between Operable and Under Repair - namely, Defective, But Defect Undetected - the methods developed in this report enable system safety projections to be made in addition to availability projections. Also provided is a mechani… more
Date: September 1, 1979
Creator: Edesess, M. & McConnell, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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