检索结果-内蒙古大学图书馆

8th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013

作者： Tyliszczak, Artur Geurts, Bernard J. Department of Mechanical Engineering and Computer Science Institute of Thermal Machinery Czestochowa University of Technology Al. Armii Krajowej 21 Czestochowa42-200 Poland Department of Applied Mathematics Multiscale Modeling and Simulation University of Twente P.O. Box 217 AE Enschede7500 Netherlands

The paper presents results of numerical studies devoted to an active flow control method applied to jet flow and focusses on rectangular jets with aspect ratio Ar = 1, 2 and 3. Square and rectangular jets are more unstable than their circular counterparts, which is expressed by an increased intensity of mixing. It is shown that the application of a suitable excitation (forcing) at the jet nozzle can qualitatively alter the character of the flow, resulting in an increased spreading rate of passive tracer. The excitation is obtained from a superposition of axial and helical forcing terms. We study the mixing in the flow upon varying parameters such as the frequency of the excitations and possible phase shifts between components. The numerical results are obtained applying LES and DNS based on a high-order compact difference code for the incompressible flows.

关键词： Aspect ratio

来源：评论

学校读者我要写书评

暂无评论

Solving satisfiability in fuzzy logics with evolution strategies

Solving satisfiability in fuzzy logics with evolution strate...

引用

Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： Tim Brys Yann-Michaël De Hauwere Martine De Cock Ann Nowé Computational Modeling Laboratory Vrije Universiteit Brussel Brussels Belgium Department of Applied Mathematics and Computer Science Universiteit Gent Gent Belgium

Satisfiability in propositional logic is well researched and many approaches to checking and solving exist. In infinite-valued or fuzzy logics, however, there have only recently been attempts at developing methods for solving satisfiability. In this paper, we propose a new incomplete solver, based on a class of continuous optimization algorithms called evolution strategies. We show experimentally that our method is an important contribution to the state of the art in incomplete fuzzy-SAT solvers.

关键词： Sociology Covariance matrix Linear programming Fuzzy logic Benchmark testing Cognition

来源：评论

学校读者我要写书评

暂无评论

Comparison of genetic association strategies in the presence of rare alleles

引用

BMC proceedings 2011年第9期5 Suppl 9卷 S32页

作者： Jestinah M Mahachie John Tom Cattaert Lizzy De Lobel François Van Lishout Alain Empain Kristel Van Steen Systems and Modeling Unit Montefiore Institute University of Liege Grande Traverse 10 4000 Liège Belgium. Bioinformatics and Modeling GIGA-R University of Liege Avenue de l'Hôpital 1 4000 Liège Belgium. Department of Applied Mathematics and Computer Science Ghent University Krijgslaan 281 S9 9000 Ghent Belgium.

In the quest for the missing heritability of most complex diseases, rare variants have received increased attention. Advances in large-scale sequencing have led to a shift from the common disease/common variant hypothesis to the common disease/rare variant hypothesis or have at least reopened the debate about the relevance and importance of rare variants for gene discoveries. The investigation of modeling and testing approaches to identify significant disease/rare variant associations is in full motion. New methods to better deal with parameter estimation instabilities, convergence problems, or multiple testing corrections in the presence of rare variants or effect modifiers of rare variants are in their infancy. Using a recently developed semiparametric strategy to detect causal variants, we investigate the performance of the model-based multifactor dimensionality reduction (MB-MDR) technique in terms of power and family-wise error rate (FWER) control in the presence of rare variants, using population-based and family-based data (FAM-MDR). We compare family-based results obtained from MB-MDR analyses to screening findings from a quantitative trait Pedigree-based association test (PBAT). Population-based data were further examined using penalized regression models. We restrict attention to all available single-nucleotide polymorphisms on chromosome 4 and consider Q1 as the outcome of interest. The considered family-based methods identified marker C4S4935 in the VEGFC gene with estimated power not exceeding 0.35 (FAM-MDR), when FWER was kept under control. The considered population-based methods gave rise to highly inflated FWERs (up to 90% for PBAT screening).

关键词： Minor Allele Frequency Rare Variant Unrelated Individual Family Data Multiple Testing Corrective Method

来源：评论

学校读者我要写书评

暂无评论

Interactive hidden Markov models and their applications

引用

IMA Journal of Management mathematics 2007年第1期18卷 85-97页

作者： Ching, W.K. Fung, E. Ng, M. Siu, T.K. Li, W.K. Advanced Modeling and Applied Computing Laboratory Department of Mathematics University of Hong Kong Pokfulam Road Hong Kong Hong Kong Department of Mathematics Hong Kong Baptist University Kowloon Tong Hong Kong Department of Actuarial Mathematics and Statistics School of Mathematical and Computer Sciences Heriot-Watt University Edinburgh EH14 4AS United Kingdom Department of Statistics and Actuarial Science University of Hong Kong Pokfulam Road Hong Kong Hong Kong

In this paper, we propose an Interactive hidden Markov model (IHMM). In a traditional HMM, the observable states are affected directly by the hidden states, but not vice versa. In the proposed IHMM, the transitions of hidden states depend on the observable states. We also develop an efficient estimation method for the model parameters. Numerical examples on the sales demand data and economic data are given to demonstrate the applicability of the model.

关键词： categorical time series hidden Markov model prediction of demand steady-state probability distribution

来源：评论

学校读者我要写书评

暂无评论

Nonminimum phase output tracking control strategies for DC-to-DC power converters

引用

Lecture Notes in Control and Information Sciences 2006年 334卷 447-482页

作者： Zinober, Alan Shtessel, Yuri Fossas, Enric Olm, Josep Patterson, Joe Department of Applied Mathematics University of Sheffield Sheffield S10 2TN United Kingdom Department of Electrical and Computer Engineering University of Alabama in Huntsville Huntsville AL 35899 United States Institute of Industrial and Control Engineering Technical University of Catalonia Barcelona 08028 Spain Department of Applied Mathematics IV Technical University of Catalonia Barcelona 08034 Spain Electronics Simulation Analysis and Modeling US Army AMCOM Redstone Arsenal AL 35898 United States

来源：评论

学校读者我要写书评

暂无评论

Self-localization of laser induced tumour coagulation limited by heat diffusion through active tissue

引用

Journal of Medical Engineering and Technology 2006年第6期30卷 390-396页

作者： Datsko, B.Y. Gafiychuk, V.V. Lubashevsky, I.A. Priezzhev, A.V. Institute for Applied Problems in Mechanics and Mathematics National Academy of Sciences of Ukraine Naukova Street 3b 79053 Lviv Ukraine Institute of Computer Modeling Krakow University of Technology 24 Warszawska Street 31155 Krakow Poland Theory Department General Physics Institute Russian Academy of Sciences 38 Vavilov Street Moscow Russia Physics Department Moscow State University Vorobjovy Gory 119899 Moscow Russia

We analyse necrosis growth due to thermal coagulation induced by laser light absorption and limited by heat diffusion into the surrounding live tissue. The tissue is assumed to contain a tumour in the undamaged tissue where the blood perfusion rate does not change during the action. By contrast, normal tissue responds strongly to an increase in the tissue temperature and the blood perfusion rate can grow by tenfold. We study in detail necrosis formation under conditions typical of a real course of thermal therapy treatment. The duration of the treatment is about 5 minutes when a necrosis domain of about 1 cm or above is formed. In particular, if the tumour size is sufficiently large, i.e. it exceeds 1 cm, and the tissue response is not too delayed, i.e. the delay time does not exceed 1 min, then there are conditions under which the relative volume of the damaged normal tissue is small in comparison with the tumour volume after the tumour is totally coagulated. © 2006 Informa UK Ltd.

关键词： Tumors

来源：评论

学校读者我要写书评

暂无评论

Challenges for modeling and Simulation Methods in Systems Biology 06

Challenges for Modeling and Simulation Methods in Systems Bi...

引用

Simulation Winter Conference

作者： Herbert M. Sauro David Harel Marta Kwiatkowska Clifford A. Shaffer Adelinde M. Uhrmacher Michael Hucka Pedro Mendes Lena Stromback John J. Tyson Watson Drive Keck Graduate Institute Claremont CA USA Department of Computer Science University of Rostock Rostock Germany Department of Computer Science and Applied Mathematics Weizmann Institute of Science Rehovot Israel Biological Network Modeling Center (BNMC) California Institute of Technology Pasadena CA USA School of Computer Science University of Binningham UK Virginia Tech Virginia Bio-Informatics Institute Blacksburg VA USA Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA Department of Computer and Information Science Linköping Universitet Sweden Department of Biological Sciences Virginia Polytechnic Institute and State University Blacksburg VA USA

ISBN: (纸本)9781424405015

Systems biology is aimed at analyzing the behavior and interrelationships of biological systems and is characterized by combining experimentation, theory, and computation. Dedicated to exploring current challenges, the panel brings together people from a variety of disciplines whose perspectives illuminate diverse facets of systems biology and the challenges for modeling and simulation methods

关键词： Biological system modeling Systems biology Biology computing Computational modeling computer science Biological systems Land mobile radio cellular systems Microscopy computer networks mathematics

来源：评论

学校读者我要写书评

暂无评论

Fast heat propagation in living tissue caused by branching artery network

引用

Physical Review E 2005年第5期72卷 051920-051920页

作者： V. V. Gafiychuk I. A. Lubashevsky B. Y. Datsko Institute of Computer Modeling Krakow University of Technology 24 Warszawska Street 31155 Krakow Poland Theory Department General Physics Institute Russian Academy of Sciences 38 Vavilov Street Moscow Russia Institute for Applied Problems in Mechanics and Mathematics National Academy of Sciences of Ukraine Naukova Street 3b 79053 Lviv Ukraine

We analyze the effect of blood flow through large arteries of peripheral circulation on heat transfer in living tissue. Blood flow in such arteries gives rise to fast heat propagation over large scales, which is described in terms of heat superdiffusion. The corresponding bioheat heat equation is derived. In particular, we show that under local strong heating of a small tissue domain the temperature distribution inside the surrounding tissue is affected substantially by heat superdiffusion.

关键词： BIOHEAT EQUATION RANDOM-WALKS RANDOM COMB BLOOD-FLOW TEMPERATURE DIFFUSION FLUCTUATIONS TRANSPORT FIELD MODEL

来源：评论

学校读者我要写书评

暂无评论

modeling Demand for Inventory Management of Slow-Moving Items in Case of Reporting Errors

引用

IFAC Proceedings Volumes 2004年第4期37卷 27-32页

作者： Alexandre Dolgui Anatoly Pashkevich Maxim Pashkevich Scientific Methods for Industrial Management Dept. (MSGI) Industrial Engineering and Computer Sciences Center (G2I) Ecole de Mines de Saint Etienne 158 Cours Fauriel 42023 Saint Etienne France Robotic Laboratory Department of Automatic Control Belarusian State University of Informatics and Radioelectronics 6 P.Brovka St. Minsk 220027 Belarus Department of Mathematical Modeling and Data Analysis Faculty of Applied Mathematics and Computer Science Belarusian State University Skarina Av. 4 Minsk 220050 Belarus

The paper is devoted to the problem of modeling demand for inventory management of slow-moving items in the case of reporting errors. It is proposed a generalization of the beta-binomial demand model that takes into account possible reporting errors in the learning sample. For the new model, there are developed identification and forecasting algorithms that provide consistent estimators of the model parameters and mean square optimal forecasts. The efficiency of the proposed approach is illustrated by an application example for slow-moving car parts.

关键词： inventory control error correction statistical inference parameter estimation prediction methods

来源：评论

学校读者我要写书评

暂无评论

Human systems integration and advanced technology in engineering department workload and manpower reduction

引用

NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

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：