检索结果-内蒙古大学图书馆

TACTICAL ROUTE PLANNING: NEW ALGORITHMS FOR DECOMPOSING THE MAP

International Journal on Artificial Intelligence Tools 1996年第1N02期5卷 199-218页

作者： J.R. BENTON S.S. IYENGAR W. DENG N. BRENER V.S. SUBRAHMANIAN Modeling and Simulation Division U.S. Army Topographic Engineering Center 7701 Telegraph Road Alexandria VA 22315–3864 USA Department of Computer Science & Robotics Research Laboratory Louisiana State University Baton Rouge LA 70803–4020 USA Department of Computer Science & Institute for Advanced Computer Studies University of Maryland College Park Maryland 20742 USA

This paper defines a new approach and investigates a fundamental problem in route planners. This capability is important for robotic vehicles(Martian Rovers, etc.) and for planning off-road military maneuvers. The emphasis throughout this paper will be on the design and analysis and hieiaichical implementation of our route planner. This work was motivated by anticipation of the need to search a grid of a trillion points for optimum routes. This cannot be done simply by scaling upward from the algorithms used to search a grid of 10,000 points. Algorithms sufficient for the small grid are totally inadequate for the large grid. Soon, the challenge will be to compute off-road routes more than 100 km long and with a one or two-meter grid. Previous efforts are reviewed and the data structures, decomposition methods and search algorithms are analyzed and limitations are discussed. A detailed discussion of a hieraichical implementation is provided and the experimental results are analyzed.

关键词： Route planning heirarchical planning A* algorithm robotic vehicles

来源：评论

学校读者我要写书评

暂无评论

Redundancy in model representation: a blessing or a curse?

Redundancy in model representation: a blessing or a curse?

引用

simulation Winter Conference

作者： R.E. Nance C.M. Overstreet E.H. Page Systems Research Center Virginia Polytechnic Institute and State University Blacksburg VA USA Computer Science Department Old Dominion University Norfolk VA USA C3 Modeling & Simulation Center Mitre Corporation McLean VA USA

With the intent of dispelling the prevailing negative connotations associated with redundancy, we argue that redundancy can effect benefits in model specification as opposed to model execution. Sources of redundancy are classified as accidental or intentional, and several examples are given for each. The comparative benefits and detriments are discussed briefly, and for the most interesting source of redundancy that induced by a modeling methodology, we demonstrate that automated elimination of redundancy can actually improve the execution time. Although the set of models investigated is small, these results are encouraging for researchers in modeling methodologies using automated model diagnosis.

关键词： Discrete event simulation Humans computer science Drives Computational modeling computer simulation Knowledge based systems Simultaneous localization and mapping Specification languages

来源：评论

学校读者我要写书评

暂无评论

Redundancy in model representation: a blessing or a curse? 96

Redundancy in model representation: a blessing or a curse?

引用

Proceedings of the 28th conference on Winter simulation

作者： Richard E. Nance C. Michael Overstreet Ernest H. Page Systems Research Center Virginia Polytechnic Institute and State University Blacksburg VA Computer Science Department Old Dominion University Norfolk VA C3 Modeling & Simulation Center Mitre Corp. 7525 Colshire Drive McLean VA

ISBN: (纸本)9780780333833

关键词：

来源：评论

学校读者我要写书评

暂无评论

MediSim: simulated medical corpsmen and casualties for medical forces planning and training

MediSim: simulated medical corpsmen and casualties for medic...

引用

Proceedings of the National Forum on Military Telemedicine On-Line Today, "Research, Practice, and Opportunities"

作者： N.I. Badler J.R. Clarke M.J. Hollick E. Kokkevis D.N. Metaxas R. Bindiganavale B.L. Webber D.M. Chi N. Foster O. Ogunyemi J. Kaye Center for Human Modeling and Simulation Department of Computer and Information Science University of Pennsylvania Philadelphia PA USA

The MediSim system extends virtual environments (both local and network) to represent simulated medical personnel interacting with simulated casualties. Our technology fosters dual-use applications involving planning, training, and evaluation of both medical corpsmen and civilian EMTs. Behaviors and behavioral control are being developed for the medical corpsmen that will enable their actions on the digital battlefield to conform to both military practice and medical protocols. From situationally-appropriate injury models, a set of physical and behavioral manifestations in a simulated casualty will be determined and portrayed on a three-dimensional body.

关键词： Medical simulation Injuries Computational modeling Humans computer simulation Biological system modeling Avatars Virtual environment Medical control systems Personnel

来源：评论

学校读者我要写书评

暂无评论

Posture interpolation with collision avoidance

Posture interpolation with collision avoidance

引用

computer Animation

作者： N.I. Badler R. Bindiganavale J.P. Granieri S. Wei Zinmin Zhao Center for Human Modeling and Simulation University of Pennsylvania Philadelphia PA USA Department of Mathematics and Computer Science Saint Joseph's University Philadelphia PA USA

While interpolating between successive postures of an articulated figure is not mathematically difficult, it is much more useful to provide postural transitions that are behaviorally reasonable and that avoid collisions with nearby objects. We describe such a posture interpolator which begins with a number of pre-defined static postures. A finite state machine controls the transitions from any posture to a goal posture by finding the shortest path of required motion sequences between the two. If the motion between any two postures is not collision free, a collision avoidance strategy is invoked and the posture is changed to one that satisfies the required goal while respecting object and agent integrity.< >

关键词： Interpolation Collision avoidance Animation Humans Computational modeling Whales Motion control Biological system modeling Mathematics Physics

来源：评论

学校读者我要写书评

暂无评论

ESTIMATION OF STRUCTURAL SERVICE LIFE OF SHIPS

引用

NAVAL ENGINEERS JOURNAL 1989年第3期101卷 156-166页

作者： AYYUB, BM WHITE, GJ PURCELL, ES P.E. 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 and design simulation and construction engineering. He is engaged in research work involving structural reliability bridges marine structures and mathematical modeling using the theories of probability statistics and fuzzy sets. His research work is sponsored by the National Transportation Safety Board the National Science Foundation the U.S. Coast Guard the State of Maryland and the University of Maryland. Dr. Ayyub is a member of ASNE the American Society of Civil Engineers (ASCE) the American Concrete Institute (ACI) the Committee on Forensic Engineering of ASCE and the Committee on Structural Safety of ACI. He is the author of more than three dozen publications in national and international journals conference proceedings and reports. Dr. Ayyub received the ASNE “Jimmie” Hamilton Award for 1985 and the ASCE “Outstanding Research Oriented Paper” in the Journal of Water Resources Planning and Management for 1987. Gregory J. White:is an associate professor of naval architecture at the U.S. Naval Academy. He received his B.S. degree in 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 a lieutenant commande

A methodology for the structural life assessment of a ship's structure is suggested. The methodology is based on probabilistic analysis using reliability concepts and the statistics of extremes. In this approach, the estimation of structural life expectancy is based on selected failure modes. All possible failure modes of the ship must be investigated and the most likely paths to structural failure identified. For the purpose of illustration two failure modes are considered in this study. They are plate plastic deformation and fatigue cracking. Structural life based on these two failure modes is determined for an example vessel. The methodology determines the probability of failure of the ship's structural components according to the identified failure modes as a function of time. The results can be interpreted as the cumulative probability distribution function (CDF) of structural life. Due to the unknown level of statistical correlation between failure modes, limits or bounds on the CDF of the structural life are established. The limits correspond to the extreme cases of fully correlated and independent failure modes. The CDFs of structural life are determined for two inspection strategies; namely, inspection every year and inspection every two years with a warranty inspection at the end of the first year. The meaning of the results for the case investigated in this study is that, for example, given an inspection strategy of two years and a desired life of 15 years, there is a 72% chance that the vessel will not experience enough partial damage‘ in the failure modes identified to constitute reaching the “end of structural life” as defined.

关键词： Ships

来源：评论

学校读者我要写书评

暂无评论

SPACE BIOPROCESSING

引用

BIO-TECHNOLOGY 1985年第9期3卷 786-790页

作者： TODD, P Paul Todd Ph.D. Director of the Bioprocessing and Pharmaceutical Research Center University City Science Center 3401 Market Street Suite 220 Philadelphia PA 19104.REFERENCES Universities Space Research Association Microgravity Biotechnology Working Group "Goals in Microgravity Biotechnology". 1985. Unpublished.Allen R.E. Rhodes P.H. Snyder R.S. Barlow G.H. Bier M. Bigazzi P.E. van Oss C.J. Knox R.J. Seaman G.V.F. Micale F.J. and Vanderhoff J.W. 1977. Column electrophoresis on the Apollo-Soyuz Test Project. Sep. Purif. Meth. 6: 1-59.|ISI|Snyder R.S. Rhodes P.H. Herren B.J. Miller R.Y. Seaman G.V.F. Todd P. Kunze M.E. and Sarnoff B.E. 1985. Analysis of free zone electrophoresis of fixed erythrocytes performed in microgravity. Electrophoresis 6: 3-9.|ISI|Tulp A. 1984. Density gradient electrophoresis of mammalian cells. In Methods of Biochemical Analysis 30: 148-198.Strickler A. and Sacks T. 1973. Continuous free-film electrophoresis: The crescent phenomenon. Prep. Biochem. 3: 269-277.|PubMed|ISI|ChemPort|Morrison D.R. Barlow G.H. Cleveland C. Grindeland R. Hymer W.C. Kunze M.E. Lanham J.W. Lewis M.L. Sarnoff B.E. Todd P. and Wilfinger W. 1984. Electrophoretic separation of kidney and pituitary cells on STS-8. Adv. Space Res. 4: 67-76.|Article|PubMed|ChemPort|Bier M. Palusinski O.A. Mosher R.A. and Saville D.A. 1983. Electrophoresis: Mathematical modeling and computer simulation. Science 219: 1281-1287.|PubMed|ISI|ChemPort|Albertsson P.A. 1971. Partition of Cell Particles and Macromolecules. Wiley- Interscience New York.Brooks D.E. and Bamberger S. 1982. Studies on aqueous two phase polymer systems useful for partitioning of biological material p. 233-240. In Materials Processing in the Reduced Gravity Environment of Space. G. E. Rindone (ed.) Elsevier Science Publ. Co. Inc. New York.Juarez-Salinas H. Engelhorn S.C. Bigbee W.L. Lowry M.A. and Stanker L.H. 1984. Ultrapurification of monoclonal antibodies by high-performanc

来源：评论

学校读者我要写书评

暂无评论

EQUIPMENT AGE-RELIABILITY ANALYSIS

引用

NAVAL ENGINEERS JOURNAL 1984年第5期96卷 65-70页

作者： PRICHARD, JW is a principal in the American Management Systems Inc. Until September 1983 he was head of the maintenance improvement program (SEA 91AD) staff of the Assistant Deputy Commander for Surface Ship Logistics Naval Sea Systems Command. His prior and first assignment in NAVSEA was that of assistant project manager for analysis in the surface ship improvement program (PMS 306) where he directed the maintenance system development program. From 1955 until 1976 he worked for the Naval Supply Systems Command in various capacities as an operation research analyst. There he conducted a large-scale simulation analysis of supply support for the Sixth Fleet designed the demand forecasting rules of the uniform inventory control point computer system and directed research into inventory modeling. Mr. Prichard who has been a member of ASNE since 1980 served as a commissioned officer in the U.S. Navy during World War II. He is the coauthor along with Robert Eagle of the textModern Inventory Managementand holds a degree in physics received from Yale University and a degree in business administration received from The George Washington University.

Age-reliability analysis is the process of discovering the relationship between the age of an item in service and its tendency to fail. Age may be measured in calendar days or in terms of events such as “start-ups” or “firings.” The most useful statistic in age-reliability analysis is the conditional probability of failure — the probability that an item that has attained an age of X-days will fail within the coming Y-days. In the past two years, the Naval Sea Systems Command has conducted age-reliability analyses on twenty-two equipments in the DDG-2 and AFS-1 class ships. These analyses indicate that overhaul is of no benefit or of only temporary benefit within the first five years of operation (after manufacture or overhaul) for eighty-two percent of the equipment and that it is actually harmful for thirty-two percent. Equipment in the FF-1052 and DD-963 class ships is now being studied.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Intelligent Computing and Optimization 1

引用

丛书名： Lecture Notes in Networks and Systems

1000年

作者： Pandian Vasant Vladimir Panchenko Elias Munapo Gerhard-Wilhelm Weber J. Joshua Thomas Rolly Intan Mohammad Shamsul Arefin

来源：评论

学校读者我要写书评

暂无评论

Intelligent Computing and Optimization 1

引用

丛书名： Lecture Notes in Networks and Systems

1000年

作者： Pandian Vasant Vladimir Panchenko Elias Munapo Gerhard-Wilhelm Weber J. Joshua Thomas Rolly Intan Mohammad Shamsul Arefin

ISBN: (数字)9783031508875

ISBN: (纸本)9783031508868

This book of;is another proof of Springer’s;on the lively interface of;It is a Master Piece of what our community of Academics and Experts can provide when an;is supported by;and Experience of the World-Leader;The 7th edition of;took place at Baitong Hotel & Resort on October 26–27, 2023, with tremendous support from the global research scholars across the planet. Objective was to celebrate “;” with researchers, scholars, experts and investigators in;across the globe,to share knowledge, experience and innovation—a marvelous opportunity for discourse and mutuality by novel research, invention and creativity.;This proceedings book of the 7th;is published by Springer Nature—

关键词： Computational Intelligence Artificial Intelligence

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：