作者：
SCHROEDER, WWOLFF, IDepartment of Electrical Engineering and Sonderforschungsbereich 254
Duisburg University Bismarckstrasse 81 D-4100 Duisburg 1 Germany Werner L. Schroeder was born in Recklinghausen
Germany on July 12 1954. After an apprenticeship as an electrician he collected several years of practical experience in industry before it drew him to study electrical engineering. He obtained his Dipl.-Ing degree from the University of Duisburg Germany in 1986. He then joined the Special Research Program. “Very High Frequency and Very High Speed Circuits based on III-V-Compound Semiconductors” at the Faculty of Electrical Engineering University of Duisburg where he worked on Monte Carlo simulation of electrical transport in III-V compounds and devices numerical modeling of MMIC transmission-line structures and on the explanation of the spurious mode phenomenon in numerical solutions of electromagnetic field eigenvalue problems. He is currently with the Department of Electromagnetic Theory and Engineering working on fullwave boundary integral analysis of general waveguiding structures which is also the subject of his dissertation.
A space domain Boundary Integral Equation (BIE) method for full-wave analysis of general waveguide is presented. The method is demonstrated to be applicable to arbitrary shielded or unshielded waveguide cross-sections...
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A space domain Boundary Integral Equation (BIE) method for full-wave analysis of general waveguide is presented. The method is demonstrated to be applicable to arbitrary shielded or unshielded waveguide cross-sections ranging from optical waveguide to MMIC transmission lines. It allows for arbitrary isotropic complex media including normal (imperfect) conductors and superconductors as is demonstrated with full-wave loss analysis of coplanar stripline and several thin-film microstrip line configurations employing Au and YBCO conductors. An outline of the theory of the BIE method is given. The implications of nonsmooth boundary curves are considered, and special attention is given to the reliability of the method in being free of spurious solutions.
作者：
FEENSTRA, SMACKAY, DMCHERRY, JAStan Feenstra is a hydrogeochemist and president of Applied Groundwater Research Ltd. in Mississauga
Ontario He received a B.Sc. in earth sciences and an M.Sc. in hydrogeology from the University of Waterloo in 1978 and 1980 respectively and was designated a Certified Ground Water Professional by AGWSE in 1989. Since 1980 he has been a ground water consultant with Golder Associates in Mississauga Ontario and Zenon Environmental in Burlington Ontario and founded Applied Groundwater Research Ltd. in 1987. Feenstra specializes in the hydrogeochemical evaluation of ground water contamination at waste disposal facilities and chemical spill sites. He is currently a Ph.D. candidate in hydrogeology and research associate in the Waterloo Centre for Ground Water Research at the University of Waterloo (Waterloo Ontario N2L 3G1) and is involved in research related to the behavior of dense organic solvents in ground water. Douglas M. Mackay is an adjunct professor at the Waterloo Centre for Groundwater Research at the University of Waterloo
Waterloo Ontario (N2L3G1). Dr. Mackay received a B.S. in engineering and M.S. and Ph.D. in civil engineering from Stanford University in 1970 1973 and 1981 respectively. From 1986 to 1990 he was a faculty member of the Environmental Science and Engineering Program of the UCLA School of Public Health. His research focuses on field studies of transport and fate of organic chemicals in ground water various scale studies of decontamination of soil and ground water and ground water monitoring technologies. John A. Cherry is a professor at the Waterloo Centre for Groundwater Research at the University of Waterloo
Waterloo Ontario (N2L 3G1). He received his B.S. in geological engineering from the University of Saskatchewan in 1962. He received his M.S. from the University of California at Berkeley in 1964 and his Ph.D. from the Department of Geology at the University of Illinois in 1966. His research interests include the field study and modeling of contaminants in ground wat
Ground water contamination by non-aqueous phase liquid (NAPL) chemicals is a serious concern at many industrial facilities and waste disposal sites. NAPL in the form of immobile residual contamination, or pools of mob...
Ground water contamination by non-aqueous phase liquid (NAPL) chemicals is a serious concern at many industrial facilities and waste disposal sites. NAPL in the form of immobile residual contamination, or pools of mobile or potentially mobile NAPL, can represent continuing sources of ground water contamination. In order to develop rational and cost-effective plans for remediation of soil and ground water contamination at such sites, it is essential to determine if non-aqueous phase liquid (NAPL) chemicals are present in the subsurface and delineate the zones of NAPL contamination. The presence of NAPL pools may be evident as a floating or sinking phase in monitoring wells. The residual NAPL contamination may be identified in soil samples if residual contents are high and contaminated zones in the soil cores are thick. However, visual identification may not be effective if residual contents ar elow or if the NAPL residual is distributed heterogeneously in the samples. The chemical analysis of soil samples provides a measure of the total chemical concentration in the soil but cannot determine directly whether NAPL is present in the samples. Qualitatively, soil analyses that exhibit chemical concentrations in the percent range or > 10,000 mg/kg would generally be considered to indicate the presence of NAPL. However, the results of soil analyses are seldom used in a quantitative manner to assess the possible presence of residual NAPL contamination when chemical concentrations are lower and the presence of NAPL is not obvious. The assessment of the presence of NAPL in soil samples is possible using the results of chemical and physical analyses of the soil, and the fundamental principles of chemical partitioning in unsaturated or saturated soil. The method requires information on the soil of the type typically considered in ground water contamination studies and provides a simple tool for the investigators of chemical spill and waste disposal sites to assess whether soil
This paper provides a context within which the role of human factors engineering (HFE) for Naval ship design may be understood. HFE is defined and its history as part of engineering design teams is traced. The role of...
This paper provides a context within which the role of human factors engineering (HFE) for Naval ship design may be understood. HFE is defined and its history as part of engineering design teams is traced. The role of HFE in ship systems design is defined, and the HFE Technology for Ships program, managed by SEA 061R, is described. The rationale for inclusion of HFE in the design process is presented, the methodology whereby it is incorporated into the design process is detailed, methodology to assess the application of HFE is outlined, and the benefits that will accrue as a result of inclusion of HFE considerations in the design process are documented. The counterpoint to inclusion is illustrated through instances of design-induced human errors. A specific application of HFE in the acquisition process is illustrated through use of the Landing Craft, Air Cushion HFE program plan. The difficulties which may be encountered as the size of the target system expands are described. Potential roadblocks to the required incorporation of HFE are examined for their source and possible ameliorative steps.
Learning leads to a decrease in program cost and inflation leads to an increase in program cost. At a certain time, the benefits of leaming and the penalty due to inflation will balance each other. This time is define...
作者：
BRACE, RLMCWADE, JEUSNCapt. R.L. Brace:
USN reported for active duty in the U.S. Naval Reserve in June 1945 and upon his release from active duty in 1948 entered Chaffey Junior College Ontario Calif. from which he received his Associate Degree in Engineering in June 1949. Subsequently he attended Purdue University from which he received his BS degree in Chemical Engineering in 1951 and while on a Westinghouse Research Fellowship his MS degree in Engineering in 1952. He joined Phillips Petroleum Co. in Oklahoma as a research engineer with the Jet Fuel Research Group upon receiving the latter degree and while so serving obtained 12 patents. In January 1955 he was recalled to active duty and reported to Officers Candidate School. Newport R.I. Upon being commissioned in the U.S. Naval Reserve in May of that year he began his flight training at the Naval Air Training Command ultimately being designated a Naval Aviator and augumented into the regular Navy in 1956. He served with four carrier-based attack squadrons including three combat tours and in 1962 completed a duty assignment with the U.S. Army in South Vietnam. Other assignments include Catapult and Arresting Gear Officer USS Enterprise (CVN-65) duty on the Staff. Commander Naval Air Force. U.S. Atlantic Fleet: Assistant Chief of Staff for Material
Task Force 78 during the mine countermeasure operations in North Vietnam Officer-in-Charge. Fleet Air Western Pacific Repair Activity
Cubi Point P.I.: and Head. Aircraft Launch and Recovery Equipments Branch Ship Installations Division. Naval Air Systems Command from 1974 to 1976 during which he had full responsibility for all shore-based and shipboard aircraft launching and recovery systems and was Acquisition Manager for the SERD Catapult Program. Capt. Brace who was designated an Aeronautical Engineering Duty Officer in 1964. is a graduate of the U.S. Navy Test Pilot School the Naval War College and the Defense Systems Management School and his military decorations include the Meritorious Service Award the Air Me
Developing transformative pathways for industry's compliance with international climate targets requires model-based insights into how supply- and demand-side measures affect industry, material cycles, global...
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Developing transformative pathways for industry's compliance with international climate targets requires model-based insights into how supply- and demand-side measures affect industry, material cycles, global supply chains, socioeconomic activities, and service provisioning that support societal well-being. We review the recent literature modeling the industrial system in low energy and material demand futures, which mitigates environmental impacts without relying on risky future negative emissions and technological fixes. We identify 77 innovative studies drawing on nine distinct industry modeling traditions. We critically assess system definitions and scopes, biophysical and thermodynamic consistency, granularity and heterogeneity, and operationalization of demand and service provisioning. We find that combined supply- and demand-side measures could reduce current economy-wide material use by 56%, energy use by 40% to 60%, and greenhouse gas emissions by 70% to net zero. We call for strengthened interdisciplinary collaborations between industry modeling traditions and demand-side research to produce more insightful scenarios, and we discuss challenges and recommendations for this emerging field.
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