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Annual computer Security Applications Conference

作者： S.C. Hansen E.A. Unger Quantitative Methods/Computer Science University of Saint Thomas Saint Paul MN USA Computing and Information Sciences Kansas State University Manhattan KS USA

A new type of data dependency, the domain reduction dependency is defined. Given a set of attributes over which a query is being made, this dependency allows one to more accurately predict the probability of release of sensitive statistics for that query than could have been done with table size alone. In addition, the properties of DRDs provide metainformation on the gain and loss of information within a lattice of queries through the addition or removal of attributes from a query set. This increased formalism on information loss and gain may provide insights which will allow the construction of better techniques for protecting the security of future statistical databases.< >

关键词： Databases Data security Statistics Lattices Information security computer security Level control Probability Protection computer science

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ADAPTING AVAILABLE FINITE-ELEMENT STRUCTURAL PROGRAMS TO SOLVE 3-DIMENSIONAL HIGH-FREQUENCY ELECTROMAGNETIC PROBLEMS

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INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE computer-AIDED ENGINEERING 1991年第4期1卷 386-394页

作者： NAVARRO, EA FEMENIA, JM SUCH, V Departamento de Fisica Aplicada Universitat de València C Doctor Moliner 50.46100 Burjassot (València) Spain Enrique A. Navarro was born in Sueca (Valéncia) Spain on January 18 1965. He received the Licenciado degree in Physics from the Universitat de Valéncia Spain in 1988. After working on Systems Simulation at GMV S.A. Madrid. Spain. he returned to the Universitat de Valéncia in 1980 where he began to study for the PhD degree in the Department de Fésica Aplicada. Universitat de Valéncia Spain. He is currently Assistant Professor in the Department of Applied Physics. His rescarch interests are in the area of microwave engineering and numerical method for solving electromagnetic wave propagation problems. Jose M. Femenia was born in Segorbe (Castellón) Spain in 1962. He obtained in Physics from the the Licenciado degree in Physics from the Universitat de Valéncia Spain in 1987 Universitat. After working in Laser and Optical Technology in the Department d'Optica di la Universitat de Valéncia he received a grant to work in numerical techniques for electromagnetics in the Departnment de Fisica Aplicada. He currently works in Computer Science and Communications in the Servei d'lnformàtica de la Universitat de Valéncia. Vicente Such was born in Valéncia Spain on August 10 1943. He received the Licenciado degree in Physics in 1967 and the PhD degree in 1971 both from the Universitat de Valéncia Spain. From 1967 to 1974 he was Assistant Professor with the Department of Electricity and Magnetism Universitat de Valéncia and with the Universitat Politécnica de Valkncia. From1974 to 1981 he was Professor of Electricity and Magnetism at the Universitat de Extremadura Universitat de Valéncia and Universidad de Palma de Mallorca Spain. He is now a Professor in the Department of Applied Physics at Universitat de Valéncia. His current research interests deal with microstrip antennas arrays Microwave passsive circuits and computer methods in electromagnetics.

The adaptation of available structural mechanics software to solve microwave problems is possible by the analogy between the differential equations. A brief review of the analogy between transverse or shear waves in elasticity and electromagnetic waves is presented, followed by a more detailed discussion of the adaptation of a program to obtain the resonant frequencies of a rectangular resonant cavity, doing a three-dimensional analysis. The geometry of the electric field is also obtained for the resonant modes.

关键词： Microwaves

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SCHEDULING A FLEXIBLE MACHINING CENTER

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ENGINEERING COSTS AND PRODUCTION ECONOMICS 1990年第1-3期19卷 249-258页

作者： ZIJM, WHM NELISSEN, EHLB Nederlandse Philips Bedrijven B. V. Centre for Quantitative Methods Eindhoven The Netherlands Eindhoven University of Technology Department of Mathematics and Computer Science Eindhoven The Netherlands

This paper describes shopfloor scheduling techniques for a highly automated metal cutting machining centre. The machining centre is modelled as a generalized flowshop, i.e. a set of work stations where each work station may contain several parallel machines. Parts visit all work stations in the same order and are processed by at most one machine in each work station (a part may skip a workstation). Constraints on the scheduling problem are imposed by release and due dates for each job. The objective is to minimize maximal lateness. The approach presented in this paper, is based on a decomposition of the generalized flowshop and uses a parallel machine scheduling algorithm as its key building block. The main contribution of this paper is on the latter subject: the development of schedules with the objective to minimize maximal lateness in a parallel machine system with release and due dates.

关键词： Production Engineering

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Master of software design and development 4th

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4th SEI Conference on Software Engineering Education, CSEE 1990

作者： Folz, Bernice M. Department of Quantitative Methods and Computer Science College of St. Thomas St. PaulMN55105-1096 United States

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Fifth EURO summer institute

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European Journal of Operational Research 1990年第1期45卷 1-3页

作者： de Kok, Ton G. Lenstra, Jan Karel Wijngaard, Jacob Zijm, W.Henk M. Nederlandse Philips Bedrijven B.V. Centre for Quantitative Methods Eindhoven Netherlands Eindhoven University Technology Department of Mathematics and Computer Science Eindhoven Netherlands Eindhoven University Technology Department of Industrial Engineering Eindhoven Netherlands Nederlandse Philips Bedrijven B.V. Centre for Quantitative Methods Eindhoven Netherlands

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PREDICTORS OF ELECTORAL TURNOUT: AN INTERNATIONAL COMPARISON

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Review of Policy Research 1990年第3期9卷 551-574页

作者： Wolfinger, Raymond E. Glass, David P. Squire, Peverill Professor of Political Science at the Univer- sity of California at Berkeley. He has written extensively on voter turnout and the impact of registration practices on participation as well as on American politics more generally. He is the co-author of the influential Who Votes? among many other works in political science. He has been an expert witness before the Congress and a vocal advocate of change in registration procedures to facilitate higher levels of voter involvement. Senior Analyst with the Kaiser Health Foundation in Oakland. He has a Ph.D. in Political Science from the University of California at Berkeley. He is on staff at the Computer Assisted Survey Methods Program at the University of California at Berkeley. Associate Professor of Political Science at the University of Iowa. His published articles have appeared in the leading social science journals. His research interests include both American politics with recent attention to the structure and process of state legisla- tures and comparative politics with field research in Japan. Professor Squire received his Ph.D. in Political Science from the University of Califor- nia at Berkeley.

Voter turnout in the United States is much lower than in almost all other democratic countries. This has been interpreted as a symptom of popular alienation from the political system, suspicion of politicians, and pessimism about the consequences of political activity. When these perspectives are measured directly, however, it is clear that Americans score very low on almost every item. Indeed, there is no relationship between political con‐ tentment and turnout. Turnout does not reflect international variations in acceptance of politicians or the political system. Rather, it responds to variations in the bureaucratic steps required to cast a ballot. The United States is one of a handful of countries that require a separate step–registra‐ tion–before the citizen can vote;and with the partial exception of France it is the only country in which the individual rather than the state bears the responsibility for registration. Copyright © 1990, Wiley Blackwell. All rights reserved

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COMPARATIVE STRUCTURAL LIFE ASSESSMENT OF PATROL BOAT BOTTOM PLATING

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 253-262页

作者： AYYUB, BM WHITE, GJ BELLWRIGHT, TF PURCELL, ES Bilal M. Ayyub:is currently an associate professor of civil engineering at the University of Maryland. He received his B.S. degree in civil engineering from the University of Kuwait in 1980. He completed both his M.S. (1981) and Ph.D. (1983) in civil engineering at the Georgia Institute of Technology. Dr. Ayyub has an extensive background in risk-based analysis. He is engaged in research work involving structural reliability marine structures and mathematical modeling using the theories of probability statistics and fuzzy sets. His research work has been sponsored by the National Transportation Safety Board National Science Foundation U.S. Coast Guard Department of Defense State of Maryland and University of Maryland. He is the author of more than 100 publications in national and international journals conference proceedings and reports. Dr. Ayyub was a recipient of the ASNE “Jimmie” Hamilton Award for 1985 the ASCE “Outstanding Research Oriented Paper” in theJournal of Water Resources Planning and Managementfor 1987 and Edmund Friedman Young Engineer Award for Professional Achievement from ASCE for 1989. Gregory J. White:is an associate professor of naval architecture at the U.S. Naval Academy. He received his B.S. degreein engineering mechanics from Vanderbilt University in 1975 an M.E. degree in naval architecture from the University of California Berkeley in 1981 and a Ph.D. in civil engineering (structures) from the University of Maryland in 1986. Dr. White served on active duty with the U.S. Navy from 1975 to 1979 as a junior officer in the engineering and operations departments of Pacific Fleet destroyers. Prior to coming to the Naval Academy he worked at Mare Island Naval Shipyard in the scientific code and in the R&D division of Exxon International company's Tanker Department. Dr. White is the author of more than two dozen technical articles and reports and is one of the U.S. representatives to the International Ship and Offshore Structures Congress (ISSC). His research interests lie in t

The estimation of an absolute life expectancy of a structure is a complex process and the results are expected to have relatively large levels of uncertainty. In this study, a comparative analysis is undertaken between two different patrol boats. This is an approach which results in a higher confidence level because certain factors common to both boats can be eliminated by assuming them to be at constant normal levels. The study is limited to the critical forward bottom plating and takes into account the differences in material, plate dimensions, operational profile, structure and loading of the two vessels. Two failure modes, plastic plate deformation and fatigue, are considered, and a novel approach to plate wastage is included. Many factors affect the structural life of a vessel. They include structural type, operational profile, structural details, loads, inspection and maintenance, design methods, safety factors, corrosion, and environmental factors. There are three types of uncertainty associated with these factors; namely, physical randomness, statistical uncertainties, and model uncertainties. The method described is designed to address these uncertainties. The objective of the paper is to present the reliability-based structural life assessment method, and then to use it to evaluate and compare the structural performance of the forward bottom plating of the two patrol boats. The results of the evaluation are presented in the form of graphs and tables in order to facilitate the comparative evaluation. The method is performed within a computer-based format which allows parametric sensitivity analysis of several variables including the size of the plating panel, thickness, operational profile and loading. The sensitivity of the structural life expectancy of the forward bottom plating to variations in these parameters is evaluated.

关键词： Naval Vessels

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Analysis of artificial viscosity effects on reacting flows using a spectral multidomain technique

Analysis of artificial viscosity effects on reacting flows u...

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作者： Macaraeg, Michéle G. Streett, Craig L. Hussaini, M.Y. NASA Langley Research Center HamptonVA United States Institute for Computer Applications in Science and Engineering HamptonVA United States Computational Methods Branch Theoretical Aerodynamics Branch

Standard techniques used to model chemically reacting flows require an artificial viscosity for stability in the presence of strong shocks. The resulting shock is smeared over at least two computational cells, so that the thickness of the shock is dictated by the structure of the overall mesh and not the shock physics. Present-day upwind schemes, which may be nonoscillatory and monotonic, are inherently dissipative, so that artificial viscosity exists in their fundamental formulation. In this study, the effects of imposing an artificial thickness on a calculated shock is investigated. The present study incorporates a nonequilibrium chemistry model for air into a multidomain spectral Navier-Stokes calculation. The computation follows the chemical kinetics and flow kinematics of a gas passing through a fully resolved viscous shock wave at hypersonic Mach numbers. Because no artificial viscosity, either added or inherent, is needed for stability of the multidomain technique, the precise effect of this artifice on the chemical kinetics and relevant flow features is determined. © 1987 American Institute of Aeronautics and Astronautics, Inc. No copyright is

关键词： Chemical stability

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A CRITICAL ANALYSIS OF ON‐CAMPUS INTERVIEWING

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Equal Opportunities International 1989年第2期8卷 1-5页

作者： Edna C. Ward Clark B. Archer Professor of Management at Winthrop College Rock Hill South Carolina. Associate Professor of Computer Science and Quantitative Methods at Winthrop College. Mr. Archer obtained a M.S. in mathematical statistics from The Florida State University and a M.A. in mathematics from Bowling Green State University.

Understanding how to effectively and lawfully gain information from a prospective employee is an important skill for business managers to master. The decision to hire an individual results in long‐term consequences‐turn‐over rates, levels of productivity, training costs, and company image. Because getting the right person in the right job is so important to the success of any business, many managers personally want to interview the potential employee. Yet few can boast of making a perfect hiring decision. In fact, half of all new hires in America stay with a company no more than six months; and each mis‐hire can cost 30 to 50 per cent above annual salary in lost productivity and expense of replacement (Bacas, 1987).

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Simulated annealing: An introduction

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Statistica Neerlandica 1989年第1期43卷 31-52页

作者： Aarts, E.H.L. van Laarhoven, P.J.M. Philips Research Laboratories Eindhoven 5600 JA P.O. Box 80.000 Netherlands Department of Mathematics and Computer Science Eindhoven University of Technology Eindhoven 5600 MB P.O. Box 513 Netherlands Center for Quantitative Methods Nedehandse Philips Bedrijven B.V Eindhoven 5600 MD P.O. Box 218 Netherlands

Simulated annealing is a general approach for approximately solving large combinatorial optimization problems. The algorithm is based on an intriguing combination of ideas from at first sight completely unrelated fields of science, viz. combinatorial optimization and statistical physics. On the one hand the algorithm can be viewed as an analogue of an algorithm used in statistical physics for computer simulation of the annealing of a solid to its minimum–energy state, on the other hand it can be considered as a generalization of the well–known iterative improvement approach to combinatorial optimization problems. In this introductory paper we give a mathematical description of the simulated annealing algorithm and discuss its behaviour from both a theoretical and a practical point of view. The latter is illustrated by applying the algorithm to the travelling salesman problem. This paper was written to familiarize the readers of Statistica Neerlandica with simulated annealing. It is a summary of papers written earlier by the authors and does not contain any new material. Copyright © 1989, Wiley Blackwell. All rights reserved

关键词： combinatorial optimization travelling salesman problem

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