Browsing by Author "Wu, SS"

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A conceptual framework of bank credit granting system-computer applications in Taiwan
(1995)
Kuo, HC
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Wu, SS
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Tarng, MY
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交大名義發表
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管理科學系
A transactional-cycle approach to evidence management for dispute resolution
(2005-05-01)
Shao, MH
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Hwang, JJ
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Wu, SS
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資訊管理與財務金融系註：原資管所+財金所
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Department of Information Management and Finance
Dispute resolution, a necessary function in electronic commerce, must rely on evidence that includes mechanisms to ensure non-repudiation of actions by the participants. In open systems comprising computer networks, this "non-repudiation service" is one type of security service defined in the ISO/IEC standards. These, as well as other literature, have defined a system framework for such a service. Evidence management is the central part. We propose a new methodology for evidence management with a model using a transactional cycle in which evidence is collected in compliance with the legal concept of chain-of-evidence. Evidence then exists as a set of relevant pieces instead of an atomic item. A case study involving credit-cardover-SSL transactions was used to demonstrate how the model works. Our aim was to present a new approach and show that evidence accountability can be better ensured. © 2004 Elsevier B.V. All rights reserved.
An integrated inventory model for a single vendor and multiple buyers with ordering cost reduction
(2001-10-13)
Woo, YY
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Hsu, SL
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Wu, SS
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管理科學系
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Department of Management Science
Forming strategic alliances and utilizing modern information technologies have been the two most important ways for firms to gain such competitive advantages as lower logistics costs and secure customers' loyalty. In this paper, we consider an integrated inventory system where a single vendor purchases and processes raw materials in order to deliver finished items to multiple buyers. The vendor and all buyers are willing to invest in reducing the ordering cost (e.g., establishing an electronic data interchange based inventory control system) in order to decrease their joint total cost. The amount of investment determines the planned ordering cost and hence affects their replenishment decisions. One major managerial implication from this ordering cost reduction is that the efforts to streamline and speedup transactions via the application of information technologies may result in a higher degree of coordination and automation among allied trading parties. An analytical model is developed to derive the optimal investment amount and replenishment decisions for both vendor and buyers. The exponential ordering cost function is then applied to our general model. and a numerical analysis is performed to provide interesting insights of the model. Numerical results show that the vendor and all the buyers can benefit directly from substantial cost savings by this ordering cost reduction investment. (C) 2001 Elsevier Science B.V. All rights reserved.
Analyzing ordinal data for group representation
(2000-01-01)
Chang, WCW
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Chu, PY
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Ding, CG
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Wu, SS
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經營管理研究所
With n individuals ranking m objects, the exhaustive comparison approach, proposed in this paper, produces a list of order vectors sorted by the relative number of concordant pairs. The exhaustive comparison approach compares all possible order vectors instead of "an" optimal order vector to help the data analyst to consider "practical" solutions rather than a "desired" solution. An overall concordant order ratio is proposed to measure "how well" each order vector may represent the ranking structure of an ordinal data set. And the marginal concordant ratio evaluating the goodness of fit of each object in each order vector is also proposed in this paper. Comparisons among some popular ranking methods are discussed in this article. An empirical survey data regarding how travelers considered various factors for choosing travelling locations are used to illustrate the proposed method and calculations.
Multiple comparisons of ranking vectors
(1998)
Chu, PY
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Wu, SS
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Ding, CG
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Chang, WCW
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管理科學系
Many managerial studies have indicated that the relative importance of the appealing of working factors far the working environment is perceived differently by different working classes. Different parties may rank the same working factors in different sequences according to their perceived importance. How do we establish a ranking vector of the attractive working factors for a set of employees? How do we compare the ranking vectors from different sets of employees? These issues need to be effectively handled to improve management quality. The concept of multiple comparisons of ranking vectors can be applied in many managerial applications, such as selecting portfolios, designing training programs, positioning, peer-ranking, conducting performance appraisal and so on. This paper discusses the concept of multiple comparisons of ranking vectors, and proposed a method for implementation. An empirical survey data regarding expectation and perception of a training program in a firm is used for illustration.