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3rd International Conference on Web Information Systems Engineering, WISE 2002

作者： Schmitt, B. Oberländer, S. Institute for Program Structures and Data Organization - IPD Computer Science Department University of Karlsruhe Am Fasanengarten 3 KarlsruheD-76128 Germany

ISBN: (纸本)0769517668

Applying meta search systems is a suitable method for supporting the user if there are many different retrieval services available on the Web. Due to information splitting strategies of literature services existing meta search systems either provide minimal integration of results or slow response times. We present an approach that combines techniques of personalization and query processing in order to satisfy the user's demand for both fast and comprehensive results. In order to evaluate and compare different query processing strategies and additional influencing parameters we developed a simulation tool called SIMPSON. Thereby, we can observe the performance of query processing within the context of different response times of the underlying digital library services in the Web, with different kinds of user queries, and with different sizes of query results. To evaluate and compare the performance of different query processing and duplicate detection strategies we developed metrics, particularly with regard to user satisfaction. We present results from our first experiments with SIMPSON, focusing on duplicate detection, query specification, and Web server performance of the underlying digital library services. © 2002 IEEE.

关键词： Digital libraries

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Commentary and analysis: Aliasing of the semidiurnal cycle in the depiction of global atmospheric circulation

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Bulletin of the American Meteorological Society 2000年第1期81卷 95-100页

作者： Chen, Tsing-Chang Schubert, Siegfried Atmospheric Science Program Dept. of Geol. and Atmosph. Sciences Iowa State University Ames IA United States Data Assimilation Office Laboratory for Atmospheres NASA/Goddard Space Flight Center Greenbelt MD United States

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The alternative media: open sources on what’s real

International Journal on Grey Literature

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International Journal on Grey Literature 2000年第2期1卷 61-63页

作者： Daniel C. Tsang Daniel C. Tsang has been since 1986 economics and political science bibliographer and Data Services Librarian at the University of California Irvine and a former coordinator of the American Library Association’s Task Force on Alternatives in Print. He also serves on the advisory board for the Alternative Press Center. Since 1993 he has hosted “Subversity” a weekly alternative radio interview program on KUCI that is also Web‐cast http://go.fast.to/sv. His WWW News Resource Page http://go.fast.to/news has links to hundreds of alternative online publications. He can be contacted at dtsang@uci.edu

To ignore the alternative press is perilous. The Cold War may have ended, but social protest literature abounds, not just on the Web. Grey political left literature deserves more attention as a counterpoint to the mis... 详细信息

关键词： Grey literature Media Internet Society Censorship

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Advances in aircraft carrier life cycle cost analysis for acquisition and ownership decision-making

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NAVAL ENGINEERS JOURNAL 2000年第3期112卷 97-110页

作者： Chewning, IM Moretto, SJ Irvin M. Chewning:is currently the Director of the Aircraft Carrier Cost Estimating and Industrial Analysis Group of the Naval Sea Systems Command. Over the past four years Mr. Chewning has guided the cost analysis effort for the new CVNX class aircraft carrier through a three-part analysis of alternatives and is currently steering it towards Milestone I in June of 2000. In 1999 the CVNX cost analysis team was presented the NAVSEA Association of Scientists and Engineers “outstanding team achievement” award for its work on the CVNX analysis of alternatives. Mr. Chewning's professional career includes over 16 years as an employee of Newport News Shipbuilding as a Pipe Fitter Piping Systems Designer Piping Systems Engineer and Cost Engineer. He has worked at the Naval Sea Systems Command since 1980 as a Senior Cost Analyst Branch Head and Deputy Division Director of the Cost Estimating and Analysis Division. He has preformed cost analysis work for virtually all USN combatant programs including submarines cruisers destroyers frigates and aircraft carriers. He also performed the cost analysis work for the OSD evaluation of the Israeli Naval Modernization Program in the 1980's. Mr. Chewning is also Chairman of the NATO Specialist Team on Ship Costing a subgroup of the NATO Naval Group Six on Ship Design. Under his leadership two Allied Naval Engineering Publications have been completed in the 1990's: ANEP-41 on Ship Costing and ANEP-49 on Ways to Reduce Costs of Ships. In 1999 the NATO Specialist Team on Ship Costing completed a paper titled “Manpower Reduction and the Use of Commercial Standards and Practices to Reduce Costs of Ships.” The result of this work will be incorporated in a future revision of the aforementioned ANEFs. Mr. Chewning is a graduate of North Carolina State University with a Bachelor of Science in Mechanical Engineering. Mr. Chewning has also completed courses at the University of Virginia and Christopher Newport University Mr. Chewning is a graduate of the Program Management College

The U.S. Navy recently conducted an analysis of alternatives (AOA) to set the stage for determining the characteristics and acquisition strategy for its next generation aircraft carrier. The platform design selected is expected to be in service throughout the 21st century. The parameters under consideration for change in the new carrier design lie in the areas of propulsion and electric power generation, aviation, survivability, service life, and total ownership cost (TOC) reduction. The issue of affordability is paramount This paper focuses on the need for the program management office and its supporting cost analysis staff to understand the life cycle cost (LCC) of the existing and proposed future aircraft carriers and to then translate these LCC's into meaningful information for cost-conscious decision making. The challenge is to relate the LCC in terms the key decision-makers and the engineering team can use to satisfy their respective roles. Thus, it is necessary to translate the results of the given ship design alternative LCC's into the paradigms of the respective stakeholders: Fleet User (operators of aircraft carriers) Ship Designers (translators of the fleet operator requirements) program Sponsors (providers of the funding resources) program Management Office, Ship builder and Supporting Industry (executors of the acquisition and construction of the ship) Navy and OSD decision-makers (overseers of program execution) The paper describes the aircraft carrier LCC breakdown structure that has resulted, in part, from a recent navy/shipbuilder integrated product team effort to capture total ownership costs. The structure has been used in the AOA as a tool to identify cost drivers and to add the time element to the cast equation in order to perform return on investment and program affordability analysis. The expanded ship work breakdown structure (ESWBS) has emerged as the central backbone of the cost work breakdown for AOA work. The ESWBS structure is a natural

关键词： Aircraft carriers

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Parallel integer sorting is more efficient than parallel comparison sorting on exclusive write PRAMs 99

Parallel integer sorting is more efficient than parallel com...

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Proceedings of the tenth annual ACM-SIAM symposium on Discrete algorithms

作者： Yijie Han Xiaojun Shen Electronic Data Systems Inc. 750 Tower Drive CPS Mail Stop 7121 Troy MI Computer Science Telecommunications Program University of Missouri Kansas City 5100 Rockhill Road Kansas City MO

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The NIST surface analysis data center

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AIP Conference Proceedings 1998年第1期449卷 887-891页

作者： C. J. Powell J. R. Rumble, Jr. D. M. Blakeslee M. E. Dal-Favero A. Jablonski S. Tougaard Surface and Microanalysis Science Division National Institute of Standards and Technology Gaithersburg Maryland 20899 Standard Reference Data Program National Institute of Standards and Technology Gaithersburg Maryland 20899 Institute of Physical Chemistry Polish Academy of Sciences ul. Kasprzaka 44/52 01-224 Warsaw Poland Physics Department Odense University Campusvej 55 DK-5230 Odense M Denmark

NIST has recently established a Surface Analysis data Center to give greater visibility to its databases developed for applications in surface analysis. Two databases are currently available for this purpose, and a third will be released soon. These three databases are described briefly here. Version 2.0 of the popular X-ray Photoelectron Spectroscopy database (SRD 20) was released in 1997. This database has long been a valuable resource of binding-energy and related data for the surface analysis of a wide range of materials by x-ray photoelectron spectroscopy (XPS). Version 2.0 contains about 16,000 line positions, chemical shifts, and splittings. Pull-down menus are now available to initiate searches for the identification of unknown lines, to retrieve data on core-level binding energies, to retrieve data on chemical shifts, to initiate searches for compounds containing selected elements or for specified material classes, to perform searches based on compound names and other fields, and to display Wagner *** 1 of the Elastic-Electron-Scattering Cross-Section database (SRD 64) was released in 1996. This database provides differential and total elastic-electron-scattering cross sections for simulations of signal-electron transport in XPS and Auger-electron spectroscopy (AES). Such simulations are important in the development of improved methods for correcting for elastic-electron-scattering effects in quantitative surface analyses by AES and XPS and for separating chemical information from effects due to the complex morphologies of semiconductor structures. Cross sections are given for all elements and for electron energies between 50 and 9,999 eV. The Electron Inelastic-Mean-Free-Path database (SRD 71) will be released in 1998. This database contains calculated and measured inelastic mean free paths (IMFPs) that are needed for quantitative surface analyses by AES and XPS. The IMFPs are available for elements, inorganic compounds, and organic compounds as

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Applying fuzzy functions and sequential coordination to optimization of machinery arrangement and pipe routing

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NAVAL ENGINEERS JOURNAL 1998年第6期110卷 43-54页

作者： Wu, BC Young, GS Schmidt, W Choppella, K Dr. Bi-Chu Wu:received a PhD in Mechanical Engineering from the University of Maryland College Park in 1991. She has worked on projects involving naval architecture design optimization solid mechanics and database development. Presently a senwr engineer with Angle Incorporated Dr Wu's research interests are in design optimization and fuzzy logic applications. Dr. Gin-Shu Young: a senior engineer with Angle Incorporated holds a PhD in Mechanical Engineering from the University of Maryland College Park. As a guest researcher with National Institute of Standards and Technologies from 1990 to 1993 he worked on vision-based navigation for autonomous vehicles. His experience also includes applications of optimization fuzzy logic neural network and genetic algorithm methods to engineering system design Mr. William Schmidt:co-founded Angle Incorporated in 1990 and has served as Vice PresidentlChiefScientist during this tame. He holds a B.Sc. in Applied Science from the Naval Acadt?my and an M.Sc. in Physics from the Naval Post Graduate School. He has cner 20 years experience in technical leadership material and personnel management. He has led the application of computer aided design (CAD) and Product Model Information Exchange to the shipbuilding industry. His experience also includes leading the amlication of model based operational analysis to support the Live Fire Test Program for DDG 51 Class Destroyers. Mr. Krishna M. Choppella:is a Sofware Engineer at Eidea Laboratories Incotporated where he works on componentbased distributed enterpvise frameworks. He has been involved in creating data analysis tools for the US Nay by integrating CAD modeis databases and graphical front ends. His work in the Masters degree program in Mechanical Engineering at the University of Texas at Austin was in di0ddase.r spectroscopy of combustion products in porous-matri burners. He received his Bachelors degree in Electrical Engineering in India. He was a Research Associate at the Centre for Laser Technology and Project Engi

Ship design is often multidisciplinary involving several design elements with various types of objectives and constraints (O/C) some easily described as mathematical formulas, others better modeled as descriptive assertions. This paper describes a method based on fuzzy functions and an integrated performance index to model O/C using descriptive assertions to be used with mathematical formulas in optimization. Another issue addressed in this paper concerns the coordination of design elements when sequentially coupled, that is, when one leads the other and the performance of the follower depends greatly on the design of the leader. Based on neuro-fuzzy techniques, the method described here coordinates and optimizes sequentially coupled elements. The two methods are applied to machinery arrangement (MA) and pipe routing (PR). Preliminary models for optimization of MA and PR are described considering convenience, producibility: engine room size, interference and location as factors in the O/C set. Some test results from MA/PR applications are presented and discussed. The methods are generic and can be extended to other elements in ship design. They are mutually independent and may be used separately Two advantages of their use are an improvement in overall performance and a reduction in the need for redesign of elements.

关键词： Optimization

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Influence of human engineering on manning levels and human performance on ships

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NAVAL ENGINEERS JOURNAL 1997年第5期109卷 67-76页

作者： Anderson, DE Oberman, FR Malone, TB Baker, CC David E. Anderson:has a bachelor of science degree in environmental engineering from Florida Technological University and a master's degree in environmental engineering from the University of Central Florida. He is a graduate of the Naval Sea Systems Command's Engineer-In-Training (EIT) Program. Mr. Anderson was instrumental in introducing the collective protection system (CPS) in the U.S. Navy developing the initial forward-fit package for the USS Gunston Hall and the engineering change proposal (ECP) for the USS Wasp. In 1990 he joined the Human Systems Integration (HSI) Division (SEA 55W5) where he was task leader for auxiliary ships. He is currently the HSI manager for the future technology variant of the SeaLift ship and the future carrier. Association of Scientists and Engineers 33rdAnnual Technical Symposium 26 April 1996. Fred R. Oberman:has B.A. and M.A. degrees from the University of Chicago and Loyola University (experimental psychology) and an M.S. degree in industrial engineering and operations research from Virginia Polytechnic Institute (VPI). He has more than 30 years experience in HSI management planning research analysis design and testing in government and private sector positions. He is currently responsible for NavSea HSI generic research and tool development efforts. He is responsible for Human Engineering Specifications and Standards (Commercial Hypertext) and is the NavSea 03D7 representative on HSI in Performance Specifications and for integration of HSI within Integrated Logistic Support (ILS). He has served as DoD HSI SubTAG chair and member of the Simulation and Modeling Test and Evaluation Display and Control Systems Human Computer Interaction Specifications and Standards and Systems Design Sub Tags as a member of the Society of Naval Architects and Marine Engineers (SNAME) Systems Safety Panel and a member of NATO RSG 14 on man-machine analysis. Thomas B. Malone: CHFEP received a Ph.D. in experimental psychology from Fordham University in 1964. He is president of Carlow

The objectives of Human Engineering (HE) are generally viewed as increasing human performance, reducing human error, enhancing personnel and equipment safety, and reducing training and related personnel costs. There are other benefits that are thoroughly consistent with the direction of the Navy of the future, chief among these is reduction of required numbers of personnel to operate and maintain Navy ships. The Naval Research Advisory Committee (NRAC) report on Man-Machine Technology in the Navy estimated that one of the benefits from increased application of man-machine technology to Navy ship design is personnel reduction as well as improving system availability, effectiveness, and safety The objective of this paper is to discuss aspects of the human engineering design of ships and systems that affect manning requirements, and impact human-performance and safety The paper will also discuss how the application of human engineering leads to improved performance, and crew safety, and reduced workload, all of which influence manning levels. Finally, the paper presents a discussion of tools and case studies of good human engineering design practices which reduce manning.

关键词： Human engineering

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A RISK-BASED APPROACH FOR MANAGING HAZARDOUS-WASTE

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GROUND WATER MONITORING AND REMEDIATION 1995年第1期15卷 79-89页

作者： CHIANG, CY PETKOVSKY, PD MCALLISTER, PM Chen Y. Chiang received his Ph.D. in environmental engineering from Rice University. He is a senior research engineer in Environmental RD&T at Shell Development Co.'s Westhollow Technology Center (3333 Hwy. 6 South Houston TX 77082 fax (713) 544–8727). He serves on the Hydrologic Science Panel of the National Science Foundation and on the Ground Water/Soil Technical Task Force of the American Petroleum Institute. He also serves on the Advisory Board of the Rutgers DARPA/ONR research program. His research interests include in situ bioremediation processes ground water/soil sampling and monitoring multiphase fluid flow phenomenon and risk/ exposure assessment. Paul Petkovsky is a senior research technician in the Groundwater Modeling Group of Environmental RD&T at Shell Development Co.'s Westhollow Technology Center. His responsibilities include site data analysis and the numerical modeling of the fate and transport of organics in ground water. He is currently pursuing a B.S. in chemical engineering with an environmental emphasis at the University of Houston. Paul McAllister received a B.S. in chemical engineering from the University of Kansas in 1987 and a Ph.D. in chemical engineering from the University of Notre Dame in 1991. He is currently an associate research engineer in Environmental RD&T at Shell Development Co.'s Westhollow Technology Center. Since joining Shell he has conducted research and provided technical support on ground water modeling and remediation issues. His research interests include in situ bioremediation of ground water and residual hydrocarbons natural attenuation of contaminants and subsurface fate and transport phenomena in the subsurface.

In 1992, the U.S. Environmental Protection Agency (EPA) proposed risk-based management of hazardous waste. A major component of the proposed rule is the determination of non-site-specific screening concentration levels from waste leachate. Ground water at a downgradient exposure point must not exceed those screening levels, or more stringent requirements would apply. The screening concentration level is determined with verified models and equations that simulate the transport and attenuation of chemicals as they travel from the source area to the exposure point. A consortium of screening levels is determined in this paper by considering varying physical, chemical, and biological conditions. In addition, a method is developed for multicomponent leaching from contaminated soils in a landfill to determine the time-dependent behavior of a finite source. Finally, this paper discusses infiltration rate through the clay liner.

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THERMODYNAMIC PROPERTIES OF THE GROUP IA ELEMENTS

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JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE data 1994年第3期23卷 385-497页

作者： ALCOCK, CB CHASE, MW ITKIN, VP Center for Sensor Materials University of Notre Dame Notre Dame IN 46556 Standard Reference Data Program National Institute of Standards and Technology Gaithersburg Maryland 20899‐001 Department of Metallurgy and Materials Science University of Toronto Toronto Ontario M5S 1A4 Canada

This review describes thermodynamic properties of condensed phases of the alkali metals, excluding francium for which the amount of information is too limited. The properties considered are: heat capacities from 0 to 1600 K, temperatures and enthalpies of fusion and martensitic transformation in Li and Na;discussion of the Debye temperature and electronic heat capacity coefficient at absolute zero temperature is also included. The paper is the second part of a series. Similar to our previous assessment of the IIA group [93ALC/CHA], this paper considers original studies, especially with respect to factors which influence the accuracy and reliability of results. Recommendations derived from such analyses are compared with most advanced previous reviews made at the Institute for High Temperatures (Moscow) [70SHP/YAK], [82GUR] and the National Institute of Standards and Technology (Washington) [85JAN]. The properties of individual elements of the group are compared and suggestions are made for experimental studies which should improve poorly measured quantities. The review is supplemented by an IBM PC database which contains references, assessed data, brief description of studies and has facilities for fitting and plotting of data and for adding new information.

关键词： ELEMENT ENTHALPY FUNCTION FUSION GIBBS ENERGY HEAT CAPACITY PHASE TRANSITION THERMODYNAMICS

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