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Managing Discretionary Services: A Review and Research Opportunities

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Journal of Systems Science and Systems Engineering 2021年第1期30卷 1-16页

作者： Xiaofang Wang Rongyi Huang Junguang Gao Laurens G.Debo school of business Renmin University of ChinaBeijing100872China business school Beijing Technology and Business UniversityBeijing100038China Tuck school of business Dartmouth CollegeHanoverNH03755USA

Discretionary services typically refer to professional work and complex service work by physicians,software developers,web designers,lawyers,or financial analysts,where there are no standard working processes and customer perceived quality of service increases with the time spent on ***,research on these services,especially the corresponding speed-quality tradeoff problem,has gained more and more *** paper reviews both the analytical models and the empirical studies in this area,highlighting their contributions and pointing out potential directions for future research.

关键词： Discretionary service speed-quality tradeoff queueing

EXTENSION OF THE TOPSIS METHOD BASED ON PROSPECT THEORY AND TRAPEZOIDAL INTUITIONISTIC FUZZY NUMBERS FOR GROUP DECISION MAKING

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Journal of Systems Science and Systems Engineering 2014年第2期23卷 231-247页

作者： Xihua LI Xiaohong CHEN school of business Central South University

Considering the decision maker＇s risk psychological factors and information ambiguity under uncertainty, a novel TOPSIS based on prospect theory （PT） and trapezoidal intuitionistic fuzzy numbers （YrIFNs） for group decision making is investigated, in which the criteria values and the criteria weights take the form of TrIFNs, and weights of decision makers are unknown. Firstly, distance measures for TrIFNs are used to induce value function under trapezoidal intuitionistic fuzzy environment. Secondly, the concepts of distance measures and trapezoidal intuitionistie fuzzy weighted averaging operator are employed to induce the weights of decision makers and thus the decision makers＇ options can be aggregated. Then the PT-based separation measures and relative closeness coefficient are defined and an algorithm for ranking alternatives under trapezoidal intuitionistic fuzzy environment is proposed. Finally, a numerical example further illustrates the practicality and effectiveness of the proposed TOPSIS method.

关键词： TOPSIS trapezoidal intuitionistic fuzzy numbers prospect theory group decision making distance measures

Benefit community promotes evolution of cooperation in prisoners’ dilemma game

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Chinese Physics B 2019年第10期28卷 603-608页

作者： Jianwei Wang Jialu He Fengyuan Yu Wei Chen Rong Wang Ke Yu school of business Administration Northeastern University

Exploring the emergence and maintenance of cooperation in social dilemma is valuable and it arises considerable concerns of many researchers. In this paper, we propose a mechanism to promote cooperation, called benefit community,in which cooperators linking together form a common benefit community and all their payoffs obtained from game are divided coequally. The robustness of conclusions is tested for the PDG(prisoners' dilemma game) on square lattice and WS small world network. We find that cooperation can be promoted by this typical mechanism, especially, it can diffuse and prevail more easily and rapidly on the WS small world network than it on the square lattice, even if a big temptation to defect b. Our research provides a feasible direction to resolve the social dilemma.

关键词： coevolution cooperation prisoners' dilemma game benefit community

A MULTI-ATTRIBUTE LARGE GROUP EMERGENCY DECISION MAKING METHOD BASED ON GROUP PREFERENCE CONSISTENCY OF GENERALIZED INTERVAL-VALUED TRAPEZOIDAL FUZZY NUMBERS

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Journal of Systems Science and Systems Engineering 2015年第2期24卷 211-228页

作者： Xuanhua Xu Chenguang Cai Xiaohong Chen Yanju Zhou school of business Central South University

In this paper, a new decision making approach is proposed for the multi-attribute large group emergency decision-making problem that attribute weights are unknown and expert preference information is expressed by generalized interval-valued trapezoidal fuzzy numbers （GITFNs）. Firstly, a degree of similarity formula between GITFNs is presented. Secondly, expert preference information on different alternatives is clustered into several aggregations via the fuzzy clustering method. As the clustering proceeds, an index of group preference consistency is introduced to ensure the clustering effect, and then the group preference information on different alternatives is obtained. Thirdly, the TOPSIS method is used to rank the alternatives. Finally, an example is taken to show the feasibility and effectiveness of this approach. These method can ensure the consistency degree of group preference, thus decision efficiency of emergency response activities can be improved.

关键词： Generalized interval-valued trapezoidal fuzzy numbers large group decision making,group preference consistency emergency response

An Axiomatization of Probabilistic Owen Value for Games with Coalition Structure

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Acta Mathematicae Applicatae Sinica 2014年第3期30卷 571-582页

作者： Hong-xia SUN Qiang ZHANG business school Beijing Technology and Business University school of Management and Economics beijing institute of technology

In the framework of games with coalition structure, we introduce probabilistic Owen value which is an extension of the Owen value and probabilistic Shapley value by considering the situation that not all priori unions are able to cooperate with others. Then we use five axioms of probabilistic efficiency, symmetric within coalitions, symmetric across coalitions applying to unanimity games, strong monotone property and linearity to axiomatize the value.

关键词： game theory Coalition structure Owen value Matroids

Service-Cost-Sharing Contract Design for a Dual-Channel Supply Chain with Free Riding

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Journal of Systems Science and Systems Engineering 2022年第3期31卷 338-358页

作者： Jinsen Guo Yongwu Zhou Baixun Li business school Henan Normal UniversityXinxiang 453007China school of business Administration South China University of TechnologyGuangzhou 510641China school of business Shantou UniversityShantou 515063China

This paper considers a dual channel supply chain,where a manufacturer sells a single product through his/her online channel and a traditional retailer,who provides consumers with pre-sale *** manufacturer's online channel may free-ride the retailer's pre-sale service,which reduces the retailer's desired effort level,and hence may hurt the manufacturer's and the overall supply chain *** both Manufacturer-and Retailer-Stackelberg settings,we study how the manufacturer designs a service-cost-sharing(SCS for brevity)contract to enhance the retailer's service effort level,and how free riding influences two members'optimal *** design an algorithm for determining the two members’optimal decisions under each *** three main findings are found:(i)In the Manufacturer-Stackelberg setting,the SCS contract can enhance the retailer's service effort level and eliminate the negative impact incurred by free riding,but can't in the Retailer-Stackelberg setting,(ii)Under the SCS contract,the smaller the fraction of service cost the retailer is requested to share,the more detrimental to the retailer it will be under certain *** is,the phenomenon called"counter-profit cost-sharing"appears,(iii)Both players like to act as a leader if the price competition between the two channels is not relatively very fierce,otherwise they both like to act as a follower.

关键词： Free riding pricing strategy service cost-sharing contract stackelberg game channel conflict

WARRANTY STRATEGY IN A SUPPLY CHAIN WHEN TWO RETAILER'S EXTENDED WARRANTIES BUNDLED WITH THE PRODUCTS

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Journal of Systems Science and Systems Engineering 2015年第3期24卷 364-388页

作者： Yiwen Bian Shuai Yan Wei Zhang Hao Xu SHU-UTS SILC(Sydney Institute of Language & Commerce) business school Shanghai University school of Management Zhejiang University school of business Anhui University

We in this paper examine warranty strategy in a two-stage supply chain consisting of a manufacturer and two competing retailers. The manufacturer produces two substitute products and markets them through the two retailers to a group of consumers, respectively. For each type of products, the manufacRtrer＇s base warranty and a retailer＇s extended warranty are bundled with the product. We use game theoretic models to explore the interactions between the two types of warranties and the competition between the retailers. For this purpose, two scenarios are considered： no retailer and both the two retailers providing the extended warranties, respectively. In each scenario, the manufacturer＇s base warranties are assumed to be offered. Our results show that when the retailers offer their extended warranties, the manufacturer has no incentive to offer the base warranties; otherwise, the manufacturer has to provide the base warranties. The competition between retailers in terms of the product substitutability has no impact on warranty decisions, but affects all players＇ profits in the supply chain. The manufacturer can provide a longer warranty length and higher customer welfare to a customer than the retailers do, if it is more efficient than the retailers in warranty cost-efficiency, and vice versa.

关键词： Base warranty extended warranty supply chain competition.

Emergency Supply Chain Management Based on Rough Set-House of Quality

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International Journal of Automation and computing 2019年第3期16卷 297-309页

作者： Yuan He Xue-Dong Liang Fu-Min Deng Zhi Li business school Sichuan University

Due to the frequent occurrence of various emergencies in recent years,people have put forward higher requirements on the emergency supply chain *** is of great significance to explore the key management indicators of emergency supply chain for its management and efficient *** order to reveal the essence of emergency supply chain management,production,procurement,distribution,storage,use,recycling and other emergencies,supply chain links are considered to establish an emergency supply chain management index system to identify the key influencing factors in the emergency supply *** emergency supply chain involves many management elements and the traditional qualitative analysis and comprehensive evaluation methods have their shortcomings in *** order to get a more suitable method,a novel evaluation model is proposed,based on Rough set—house of quality *** this paper,Rough set is used to filter the indexes,eliminate redundant indicators,and simplify many management indicators of the emergency supply chain system to a few core ***,the house of quality is used to analyze and sort the core index to get the key management index of emergency supply *** effectiveness of the proposed evaluation model is validated through a series of numerical *** experimental results also show that the proposed evaluation model can assist decision makers in optimizing the emergency supply chain procedure and improving the efficiency of accident rescue.

关键词： Emergency supply chain Rough set House of quality management indicators attribute reduction

Novel loop-like solitons for the generalized Vakhnenko equation

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Chinese Physics B 2013年第3期22卷 271-274页

作者：张旻马玉兰李帮庆 school of Science Beijing Technology and Business University school of Computer and Information Engineering Beijing Technology and Business University

A non-traveling wave solution of a generalized Vakhnenko equation arising from the high-frequent wave motion in a relaxing medium is derived via the extended Riccati mapping *** solution includes an arbitrary function of an independent *** on the solution,two hyperbolic functions are chosen to construct new *** single-loop-like and double-loop-like solitons are found for the equation.

关键词： generalized Vakhnenko equation extended Riccati mapping method nontraveling wave solution loop-like soliton