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Service Systems and Service Management (ICSSSM), 2010 7th International Conference on

Date 28-30 June 2010

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Displaying Results 1 - 25 of 204
  • [Front cover]

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  • [Front matter]

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  • Contents

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  • Author index

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  • A new model of service systems and road maps for developing new methods to evaluate service systems

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (171 KB) |  | HTML iconHTML  

    This paper proposes a new mathematical model of service systems (SSs) based on theory of I/O systems within the mathematical systems theory, and furnishes both a conceptual framework and a mathematical framework for describing and classifying types and aspects of `value' of SSs. In fact, three types of values, that is, `stakeholder value,' `connection value,' and `substitution value' are proposed, and within the conceptual and the mathematical frameworks, `road maps' for developing new methods for evaluating such aspects of value of SSs as `profitability,' `marketability,' `connectability,' `completeness,' `replaceability,' and `uniqueness' are developed, respectively. For more development of the proposed mathematical model of SSs and the proposed conceptual and mathematical frameworks for dealing with the value of SSs, moreover, a concept of service creating SSs (scSSs), which are in `higher' class of SSs, is described in the proposed model of SSs. View full abstract»

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  • An application of coalition power analysis in group decision based on the blockability index into decision support for management in shareholders meeting

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (107 KB) |  | HTML iconHTML  

    This paper aims to provide an application of an analytical method for the analysis of coalition power in group decision situations based on the blockability index on simple games, and to present that the method gives effective information for decision makers to make appropriate decisions, taking a shareholders meeting in Japan as an example. In this paper, the voting situation in the 39th Fiscal Year Shareholders Meeting of Aderans Holdings, in which the Management and the largest shareholder Steel Partners Japan (SPJ) are in a serious conflict, is mathematically modeled as a six-player simple game in the framework of the theory of cooperative games, and each coalition's power is evaluated by the blockability index. The result indicates that SPJ by itself is so powerful that the Management should get many shareholders on its side to pass its proposals. More realistic analysis is made in which possible coalitions are restricted only to feasible ones, based on each shareholder's position toward the Management. It shows that the Management must get all the shareholders except SPJ and itself on its side to have more power than SPJ. These results indicating difficulty of the Management's winning to SPJ are consistent with the reality, in which the Management's proposal was voted down. View full abstract»

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  • Analyzing a single-period inventory problem with one-shot decision approaches

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    In this paper, a single-period inventory problem with partially known demand information characterized by possibility distributions is analyzed. Decision models are proposed based on one-shot decision approaches where three choices with considering regret of decision are provided. These three choices are used for determining which state of nature (demand) should be considered for each order quantity. Based on the selected states of nature (focus point), the optimal order quantity is obtained. Different kinds of focus points (demands) lead to different results (optimal order quantities) which reflecting a decision maker's attitudes about possibility of demand and regret of decision. View full abstract»

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  • Blog information considered useful for book sales prediction

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (166 KB) |  | HTML iconHTML  

    This paper presents a new method to find leading indicators of domestic book sales from conventional Blog information. Although Blog information is different from actual purchases, it will influence customer behaviors. They consider it would be useful for decision making of businesses and organizations. Main contributions of the paper are three fold: 1) As well as study on the US of an Internet bookstore, there is a correlation between book sales data and Blog information in Japan by discriminating judge of book with reference rate; 2) Some of the Blog information are effective to predict the lead-time between publishers and bookstores; and 3) Process is proposed to judge whether the information is valid as leading indicators. View full abstract»

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  • Classifying customers using navigational history for developing personalized Web services

    Page(s): 1 - 6
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (111 KB) |  | HTML iconHTML  

    An approach to classifying Web customers for developing personalized Web services is presented. The main objective of the proposed approach is to effectively distinguish a potential customer for the purpose of planning customized e-marketing. The proposed approach can be divided into four steps: determine a customer's general interest model, ascertain a customer's local browsing model, classify Web customers, and design a personalized marketing and promotion plan for e-commerce based on the customer classification. To demonstrate the effectiveness of the proposed framework, an illustrative experiment is carried out. The proposed approach could be integrated with personalized Web services for improving their effectiveness. View full abstract»

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  • Hypergame modeling of systems intelligent agents

    Page(s): 1 - 6
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (122 KB) |  | HTML iconHTML  

    We propose a new equilibrium concept in hypergames called systems intelligent equilibrium (Sleq). Hypergame theory is a game theoretical framework that deals with an agent who has each subjective internal view about a game situation and makes decisions based on it[3]. Sleq refines stable hyper Nash equilibrium[16] by considering some off-the-equilibrium plays. The main proposition suggests that it leads to Pareto-optimization from an objective viewpoint in hypergames satisfying some conditions. Practically and philosophically, the idea is inspired by the discourse of systems intelligence [7, 8]. We discuss the significance of systems intelligence in terms of hypergames and show some practical implications for agents acting inside a complex system. In particular we analyze paradoxical but ubiquitous social phenomena called systems of holding back. View full abstract»

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  • Learning with sharing aspiration to promote cooperative behavior in a group

    Page(s): 1 - 5
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    Service science aims to explain and improve interaction in which multiple entities work together to achieve win-win outcomes or mutual benefits. In the context of service, service system entities are dynamic configuration of resources, and the four primary types of resources are people, organizations, shared information, and technology. As we can see, people as a part of service systems entities have important role to make the others entities work together to create a value. Thus, how people can work together is also interesting issue in area of service science. In recent years, there has been substantial progress on how people can work together. Game theory has formalized the issue as cooperation problem and represents it as a mixed-motive two-person game. The cognitive demands of forward-looking rationality have led game theorists to explore models of cognition that explicitly describe the dynamics of stepwise decision making. As a result, learning-theoretic models of cooperative behavior are needed. The idea of modeling people as stimulus-response mechanism shaped by learning forces has a long history in psychology. The model uses aspiration as cognitive which stimuli people's action. In a group, people might have different aspiration toward their relationship and might learn with different way of learning to achieve a goal. How people with different aspiration can learn to work together is not a trivial work. In this paper, we purpose a model of sharing aspiration among people in a group to increase cooperative behavior of the people. View full abstract»

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  • Managing financial risks for natural gas-fired power plants

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (109 KB) |  | HTML iconHTML  

    Deregulation has brought significant challenges to risk management strategies in electricity markets. High volatilities in fuel prices, the spikes in electricity prices, and varying operational characteristics expose the power generation utilities to high financial risks. The focuses of this paper are to identify the risks, classify and characterize the diverse approaches, locate the gaps and provide future research direction to the valuation of power generation utilities, particularly, natural gas-fired power plants. View full abstract»

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  • Replacing an old household furnace with a new one: An evaluation

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (262 KB) |  | HTML iconHTML  

    A Hull-White one factor model based analysis has been presented to evaluate the savings of replacing an old residential furnace with a new high efficiency residential furnace. Savings is calculated by a dynamic programming approach based on a trinomial tree representing the spot prices of natural gas, the most widely used fuel for residential furnaces. The analysis may help both policy makers in government agencies and homeowners in saving energy costs and reducing carbon emissions. View full abstract»

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  • A decision model TOPSICA based on ideal compromise alternative and the application on logistics management

    Page(s): 1 - 4
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    Based on the existing research, this paper develops a new definition of ideal compromise alternative. Different of the ideal solution is determined by the optimal value on each attribute, the ideal compromise alternative is determined not only by the optimal value on attributes, but also the assignment among different attributes of the alternative. Furthermore, the paper develops a new decision model TOPSICA based on the ideal compromise alternative. Finally, a case improves the new model is scientific and effective. View full abstract»

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  • A fuzzy queuing facility location model with ant colony optimization algorithm for large-scale emergencies

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (91 KB) |  | HTML iconHTML  

    Efficient and timely response during accidents has received increased attention from practitioners and researchers. The sitting of emergency service facilities plays a crucial role in determining the efficiency of safety protection and emergency response. This article presents a fuzzy location-allocation model for large-scale emergencies. The previous efforts in this area have concentrated on enhancing the reliability and quality of service with a probabilistic orientation. However, this research does not typically address the particular conditions that arise when locating facilities to service large-scale emergencies, such as earthquakes, terrorist attacks, etc. In this paper we utilize fuzzy theory to develop a queuing maximal covering location-allocation model which we call the fuzzy queuing maximal covering location-allocation model for determining the facility locations in response to large-scale emergencies. ACO algorithm is developed to solve and test the model through a large-scale emergency example. We also propose extensions to our model. View full abstract»

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  • A principal-agent model on retailer's order contract in perishable product supply chain

    Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (91 KB) |  | HTML iconHTML  

    In this paper, we set up a principal-agent model of perishable product supply chain under centralized decision making situation and decentralized situation with information symmetric and information asymmetric respectively we find that supplier can coordinate the supply chain through proper strategy. Especially under information asymmetric condition, difference basic order and different kickback coefficient between high quality and low quality distributors can induce a better output, thus the supply chain system's profit can be optimized. Every paper should include an abstract with 100-300 words. At the end of the abstract, skip a line and then type. View full abstract»

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  • Balanced three-level supply chain coordination with combined contract under demand uncertainty

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (88 KB) |  | HTML iconHTML  

    Under the consideration of demand uncertainty, salvage value of surplus products and stock-out cost, combined contracts with revenue-sharing and buy-back was used to study the coordination of the three-level supply chain which consists of one retailer, one distributor and one manufacturer. Firstly, establish a three-level supply chain coordinating model with combined contract. Secondly, compare the optimum order quantity of centralized-monitoring-system and that of decentralized-monitoring-system without contracts to coordinate the optimum order quantity of the whole supply chain in the decentralized-monitoring-system with contracts. Thirdly, prove that combined contract can not only coordinate the three-level supply chain well, but also improve the profits of entities in chain evenly. Finally, analyze and test the results in a numerical example. View full abstract»

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  • Comparison between two inventory decision models for a two-echelon dual-channel distribution system

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (109 KB) |  | HTML iconHTML  

    Business modes have been changing our life with more application of Internet in supply-chain/logistics distribution system. This paper investigates two inventory-decision models of a two-echelon dual-channel distribution system consists of a manufacturer with an Internet-enabled channel at the top echelon and a retailer store at the bottom echelon. Firstly, the joint production and pricing decisions are made with a centralized view, and then under the decentralized system, the manufacturer only operates an E-channel while the retailer operates a traditional channel, their own production/ordering and pricing are made to maximize their own expected profits with a Stackelberg game. Finally, some inferences are developed by comparisons between two decisions models, and a critical conclusion is that, a franchise outlet/two part tariff contract, designed by the manufacturer, as the Stackelberg game leader, can not ensure the coordination of dual-channel system under price-dependent demand and the condition that the retailer has pricing power for traditional channel. View full abstract»

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  • Research on value of third-party reverse logistics

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    Original manufacturer can recycling returned products by himself or outsource this work to a third-party. Different recycling pattern have unequal impact on original manufacturer's profit. Therefore, it is particular important for original manufacturer to determine whether he should cooperate with a third-party under fixed products' price and yield. And it's also important for original manufacturer to decide its price and yield to achieve optimal profits when recycling has already been outsourced to third-party. In this paper the entire reverse logistics is divided into early period of recycling and late period of core-parts remanufacturing. Using mathematical models and optimization methods, the paper studies products' yield and price in order to achieve the optimal profit under two strategies: one of them is completing recycling independently by original manufacturers and another one is outsourcing some steps of the reverse logistics to the third-party. The paper also finds out the conditions which can optimize original manufacturer's profit when recycling is outsourced to the third-party and educes the outsourcing price which can benefits both the original manufacturer and the third-party. View full abstract»

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  • Reverse logistics: The game between government and distribution centers on recycling products packaging

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (69 KB) |  | HTML iconHTML  

    The paper sets up and analyzes the game model of government and distribution centers on recycling products packaging with game theory. And the equilibrium is solved. The studies indicate as follows. In the situation of definite cost, benefits for recycling products packaging, and premium put by government, the punishment probability by government becomes smaller, and the recycling probability of distribution centers becomes much larger, as penal sum becomes larger. Then distribution centers can choose optimum strategy of "recycle". Meanwhile, in the situation of definite punishment cost, the recycling probability of distribution centers becomes much larger with the larger fine of government. So the effective implementation of government laws and regulations can promote the recycle of products packaging. View full abstract»

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  • A new marginal revenue based scheduling algorithm for publish/subscribe systems

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (113 KB) |  | HTML iconHTML  

    Publish/subscribe paradigm is seen as a good candidate in constructing distributed applications due to its unique and powerful features such as anonymity, asynchrony and many-to-many communication. As applications based on publish/subscribe increases greatly it is required to support different quality of service properties. However, most current solutions adopt simple matching strategies without distinguishing crucial tasks from non-crucial ones, which lead to poor performance of key tasks when publish/subscribe systems are in heavy load. In this paper, we introduce the notion of subscription priority, and propose a new marginal revenue based scheduling (MRBS) algorithm which considers subscription priority. MRBS uses priorities of attribute constraints to sort the matching order for an event, and in such a way MRBS can distinguish important subscriptions from less important ones. MRBS is proven to be able to produce the maximum event matching revenue. A priority-sensitive algorithm for subscription information maintenance is also given. Finally, we conduct detailed experimental evaluation to verify the effectiveness of our approach. View full abstract»

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  • Assessing Canadian Schedule I banks using DEA window analysis and the Malmquist Index

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    In today's economy and society, performance analyses in the financial service industry attract more and more attention. The 7 largest Canadian Schedule I banks operate very large nationwide branch networks in all markets. They are not only essential for the security and strength of the Canadian financial system, but also make significant contributions to the economy across the country. They continue to pursue all the opportunities available to enhance their productivity and competitiveness. This paper examines the performance of 7 largest Canadian Schedule I banks using Data Envelopment Analysis (DEA) window analysis and the Malmquist Productivity Index. The DEA window analysis is applied to obtain the efficiency scores for the involved banks in the period of 1998-2007. Based on the efficiency scores the Malmquist Productivity Index was used to calculate the productivity changes. The results were further investigated and compared with economy development in Canada within the studied period. A good agreement between the model result and real economic situation was observed. View full abstract»

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  • Linear programming models for deriving priority weights from interval-valued intuitionistic preference relations with multiplicative transitivity

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (111 KB) |  | HTML iconHTML  

    It has been an increasing trend to develop multicriteria decision-making models with imprecise, uncertain, or vague decision data. An effective way to express a decision maker's (DM's) uncertain preference information is the use of interval-valued intuitionistic preference relations. In this paper, the concept of multiplicative consistent interval-valued intuitionistic preference relations is defined. Some simple and practical linear programming models are established for deriving priority interval weights based on interval-valued intuitionistic preference relations with multiplicative transitivity. Finally two illustrative numerical examples are presented to demonstrate the feasibility and effectiveness of the proposed method. View full abstract»

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  • Research on Shipping E-Commerce Platform based on J2EE and SOA development technique

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (91 KB) |  | HTML iconHTML  

    SOA (Service-Oriented Architecture) is an architecture model; it can carry on distributed deployment, combination and utilization to loosely coupled coarse-grained application components according to the requirement through Internet. Based on the problem of a poor adaptability existing in a Shipping E-Commerce Platform, a SOA development framework is proposed. According to Web Services technology based on J2EE standards, the framework is divided into client call layer, Web Service release layer and Web Service implementation layer to guarantee the stability, efficiency, loose coupling and easy integration of the system. View full abstract»

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  • Innovation in medical imaging technology: Toward a systemic service perspective

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    In the interest of patients in general, most physicians in medical organizations use novel technology from commercial firms to support innovative medicine that preserves health and saves lives. Prior studies on technology development have described the role of lead users who represent a potentially important source of novel innovations due to their unique knowledge base accumulated through their daily practice. By expanding this concept to service innovation in healthcare, our proposed model identifies a systemic view of innovation defined as a collective, non-deterministic, and path-dependent function of innovation in medical technology as well as the adoption and diffusion of these clinical innovations within a community of practice. We describe this function as a service co-creation function. Our empirical case studies on medical imaging devices support our model and, in turn, bring some insight on innovation management for medical physicians and commercial firms. View full abstract»

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