检索结果-南通市图书馆

A PRICE-SETTING NEWSVENDOR MODEL UNDER CVAR DECISION CRITERION WITH EMERGENCY PROCUREMENT

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2010年第1期19卷 85-104页

作者： Minghui XU school of economics and management,Wuhan university,Wuhan 430072,china school of economics and management Wuhan University Wuhan China

In this paper, we consider a newsvendor model in which a risk-averse manager faces a stochastic price-dependent demand in either an additive or a multiplicative form. An emergency purchase option is allowed after the realization of demand to satisfy the units that are short. By adopting Conditional value-at-risk （CVaR） as the decision criterion, we aim to investigate the optimal pricing and ordering decisions, and the effects of parameter changes in such a setting. We provide sufficient conditions for the uniqueness of the optimal policy for both demand models. We perforl~, comparative statics analysis to show how the optimal pricing and ordering decision behaves when changing parameters. We also compare our results with those of the newsvendor with a general utility function and with CVaR criterion under lost sales assumption. Our key results include：（i） For both demand models, the optimal selling price is decreasing in risk aversion. Hence, the optimal price of a risk-averse newsvendor is not greater than the optimal price of a risk-neutral newsvendor. （it） In contrary to the lost sales case, for the multiplicative demand model, the optimal order quantity may not be monotonic in risk aversion. Consequently, the optimal risk-averse order quantity may be lower or higher than the optimal risk- neutral counterpart. （iii） For the additive model, the optimal order quantity is strictly increasing in the emergency purchase price, while for the multiplicative model the optimal order quantity has no such a monotonic property. Some numerical examples are conducted to verify our claims and gain more insights about the risk-averse decision-making behaviors.

关键词： Newsvendor model inventory pricing risk aversion conditional value-at-risk

ORDERED WEIGHTED DISTANCE MEASURE

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2008年第4期17卷 432-445页

作者： Zeshui XU~1 Jian CHEN~2 1 school of economics and management,Southeast university,Nanjing,Jiangsu 210096,china 2 school of economics and management,Tsinghua university,Beijing,100084,china school of economics and management Southeast University Nanjing Jiangsu China school of economics and management Tsinghua University Beijing China

The aim of this paper is to develop an ordered weighted distance(OWD) measure,which is the generalization of some widely used distance measures,including the normalized Hamming distance, the normalized Euclidean distance,the normalized geometric distance,the max distance,the median distance and the min distance,***,the ordered weighted averaging operator,the generalized ordered weighted aggregation operator,the ordered weighted geometric operator,the averaging operator,the geometric mean operator,the ordered weighted square root operator,the square root operator,the max operator,the median operator and the min operator are also the special cases of the OWD *** methods depending on the input arguments are given to determine the weights associated with the OWD *** prominent characteristic of the OWD measure is that it can relieve(or intensify) the influence of unduly large or unduly small deviations on the aggregation results by assigning them low(or high) *** desirable characteristic makes the OWD measure very suitable to be used in many actual fields,including group decision making,medical diagnosis, data mining,and pattern recognition,***,based on the OWD measure,we develop a group decision making approach,and illustrate it with a numerical example.

关键词： Group decision making ordered weighted distance(OWD) measure aggregation operator

Competence Set Analysis Under Risk and Uncertainty

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2001年第2期12卷 12-18页

作者： Feng Junwen school of economics and management, Nanjing university of Scienece and technology, 210094, P. R. china school of economics and management Nanjing University of Scienece and Technology 210094 P. R. China

The competence set analysis technology can be applied to solve the decision making problems successfully and satisfactorily. This paper mainly focuses on the expanding strategy research and development of the competence set under risk and uncertainty. A systematic expression of the competence set analysis is described, several expanding principles and strategies with regard to several different cases are presented, and their applications in the personnel training program are discussed, some conclusions and suggestions to be developed in a further work are included.

关键词： Competence set analysis Competence expansion Decision analysis Habitual domain Risk and uncertainty analysis Expansion principle and strategy.

A Table Based Algorithm for MinimumDirected Spanning Trees

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2001年第1期12卷 22-28页

作者： Feng Junwen school of economics and management, Nanjing university of Science and technology, 210094, P. R. china school of economics and management Nanjing University of Science and Technology 210094: P. R. China

As far as the weighted digraph is considered, an optimal directed spanning tree algorithm called table based algorithm (TBA) is proposed in the paper based on the table instead of the weighted digraph. The optimality ... 详细信息

关键词： Optimal spanning tree problem Digraph Directed tree Table representation.

Adaptive neuro fuzzy inference system for classification of water quality status

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2010年第12期22卷 1891-1896页

作者： Han Yan,Zhihong Zou,Huiwen Wang school of economics and management,Beihang university,Beijing 100191,china school of economics and management Beihang University Beijing 100191 Chin

An adaptive neuro fuzzy inference system was used for classifying water quality status of river. It applied several physical and inorganic chemical indicators including dissolved oxygen, chemical oxygen demand, and ammonia-nitrogen. A data set （nine weeks, total 845 observations） was collected from 100 monitoring stations in all major river basins in china and used for training and validating the model. Up to 89.59% of the data could be correctly classified using this model. Such performance was more competitive when compared with artificial neural networks. It is applicable in evaluation and classification of water quality status.

关键词： adaptive neuro fuzzy inference system artificial neural networks water quality status classification

Study on the Reliability Evaluation of Qualitative Indices in Multi-Objective Decision

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2002年第2期13卷 60-63页

作者： Zhang Mingshan , Tang Xiaowo & He Dequan( school of economics and management, Southwest university for Nationalities, Chengdu 610041, P.R.china school of management, university of Electronics Science and technology, Chengdu 610054, P.R.china school of school of economics and management Southwest University for Nationalities Chengdu 610041 P. R. China school of management University of Electronics Science and Technology Chengdu 610054 P. R. China school of economics and management Huadong Polytechnic University Shanghai 200237 P. R. China

Qualitative indices in multi-objective decision can usually be evaluated and measured by mathematical methods or models, but the obtained results are sometimes inaccurate because of fuzziness of indices. To improve the accuracy and reliability of the evaluation results, set-value statistic principle is applied, and accordingly four evaluation methods are obtained. Meanwhile, these methods are compared briefly.

关键词： Evaluation Fuzzy sets Mathematical models Reliability

Empirical study on entropy models of cellular manufacturing systems

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2009年第3期19卷 389-395页

作者： Zhifeng Zhang a,b,*, Renbin Xiao a a CAD Center, Huazhong university of Science and technology, Wuhan 430074, china b economics and management school of Nanchang, Hangkong university, Nanchang 330063, china CAD Center Huazhong University of Science and Technology Wuhan 430074 China economics and management school of Nanchang Hangkong University Nanchang 330063 China

From the theoretical point of view, the states of manufacturing resources can be monitored and assessed through the amount of infor- mation needed to describe their technological structure and operational state. The amount of information needed to describe cellular manufacturing systems is investigated by two measures: the structural entropy and the operational entropy. Based on the Shannon entropy, the models of the structural entropy and the operational entropy of cellular manufacturing systems are developed, and the cog- nizance of the states of manufacturing resources is also illustrated. Scheduling is introduced to measure the entropy models of cellular manufacturing systems, and the feasible concepts of maximum schedule horizon and schedule adherence are advanced to quantitatively evaluate the effectiveness of schedules. Finally, an example is used to demonstrate the validity of the proposed methodology.

关键词： Cellular manufacturing systems Structural entropy Operational entropy Scheduling

The Symmetric Banzhaf Value for Fuzzy Games with a Coalition Structure

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2012年第6期9卷 600-608页

作者： Fan-Yong Meng 1 Qiang Zhang 2 1 school of management,Qingdao Technological university,Qingdao 266520,china 2 school of management and economics,Beijing Institute of technology,Beijing 100081,china school of management Qingdao Technological University Qingdao China school of management and economics Beijing Institute of Technology Beijing China

In this paper,a generalized form of the symmetric Banzhaf value for cooperative fuzzy games with a coalition structure is *** axiomatic systems of the symmetric Banzhaf value are given by extending crisp ***,we study the symmetric Banzhaf values for two special kinds of fuzzy games,which are called fuzzy games with multilinear extension form and a coalition structure,and fuzzy games with Choquet integral form and a coalition structure,respectively.

关键词： Cooperative fuzzy game coalition structure symmetric Banzhaf value multilinear extension Choquet integral.

AN OPTIMAL KANBAN SYSTEM IN A MULTI-STAGE,MIXED-MODEL ASSEMBLY LINE

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2010年第1期19卷 36-49页

作者： Lei YANG~1 Xiaopeng ZHANG~2 Mingyue JIANG~3 school of Business Administration,South china university of technology guangzhou 510640,china school of Business Administration South China University of Technology Guangzhou China

This paper studies the parameter design and the performance optimization of a Kanban system without stockouts in a multi-stage, mixed-model assembly line. The model of a Kanban system based on production processes is established by examining the relationship among the set-up time, the amount of work in process （WIP）, the capacity indicated by a Kanban, and the takt-time ratio. A novel method for optimizing performance on the premise of no stockouts is proposed. Empirical results show that the amount of WIP is reduced remarkably after optimization.

关键词： Multi-stage mixed-model assembly line Kanban management amount of WIP one-piece flow