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基於網格運算並具備工作負載分享之數位內容智財權管理服務系統
(2008)
蔡銘箴
;
TSAI MIN-JEN
;
國立交通大學資訊管理研究所
分散式運算 (Distributed Computing)允許應用程式透過網路，在不同地方的電腦上執行，將可不必把運算任務集中在某台電腦，而是以功能任務分派給各地電腦運算，再傳回結果與回覆任務。隨著系統架構的演進，相較於早期的主從式(Client-Server) 架構，同儕運算(Peer-to-Peer)與網格運算(Grid Computing)架構的分散式系統應用已逐漸成為企業運算的主流。本研究提出一個基於網格運算下且具有工作負載分享之數位內容智財權管理服務系統，此平台符合Grid Portal 的標準，使用Globus Toolkit 與Condor 來作為整個平台的基礎，並利用Web 2.0 based 介面來提供使用者選擇服務、遞交、控制、管理工作與即時監控工作進度，目的為提供數位內容智財權管理服務包括： 1、不可視浮水印嵌入與偵測 2、圖片攪亂以增強訊號的強韌性 3、可視浮水印的嵌入 4、影像竄改驗證與還原 5、浮水印攻擊測試 6、使用者自訂工作。然而為了使得平台具有 QOS 的動態資源協調能力，來降低整體工作執行時間，在平台中，透過協調機制的工作評估服務，利用電腦效能指標，來預測工作執行時間並進行有效的工作分割與合併，使平台保有穩定的運算能力。因此本計畫將充分運用網格運算的特性，有效運用網路服務來對數位內容的使用作分享、搜尋與管理，同時保護智慧財產權在開放的網路環境下依然能夠保護著作人的所有權。
A generic electronic payment model supporting multiple merchant transactions
(2000)
Huang, YL
;
Shieh, SP
;
Ho, FS
;
資訊工程學系
;
Department of Computer Science
This paper presents a generic electronic payment model which is intended for a multi-merchant transaction, in which more than one merchant (the retailer, multiple resellers and content providers) are involved in the distribution of electronic contents. With our payment model, every involved merchant will be notified to verify the license information of a content on the settlement day before the customer actually pays for his purchase. Thus, piracy can be discouraged, intellectual property rights of electronic contents can be protected. Each of the involved merchants can obtain his own deserved share of the customer's payment in accordance with their union agreement on this content. As examples to demonstrate the applications of our generic payment model, two well-known payment systems are enhanced herein, based on our payment model.
A trustworthy Internet auction model with verifiable fairness
(2001)
Liao, GY
;
Hwang, JJ
;
資訊管理與財務金融系註：原資管所+財金所
;
Department of Information Management and Finance
Describes a novel Internet auction model achieving verifiable fairness, a requirement aimed at enhancing the trust of bidders in auctioneers. Distrust in remote auctioneers prevents bidders from participating in Internet auctioning. According to proposed survey reports, this study presents four characteristics that render the Internet untrustworthy for bidders. These intrinsic properties suggest that auction sites not only follow auction policies, but provide customers with evidence validating that the policies are applied fairly. Evidence of verifiable fairness provides bidders with a basis for confidence in Internet auctions. Cryptographic techniques are also applied herein to establish a novel auction model with evidence to manifest and verify every step of the auctioneer. Analysis results demonstrate that the proposed model satisfies various requirements regarding fairness and privacy. Moreover, in the proposed model, the losing bids remain sealed.
Electronic commerce in Greater China
(2001)
Trappey, CV
;
Trappey, AJC
;
交大名義發表
;
National Chiao Tung University
The Greater China region (China, Taiwan and Hong Kong) has more than 1.2 billion people, about one fifth of the world's total population. This incredibly large market continues to modernize rapidly, and over the last five years, the region has maintained a very high economic growth rate in comparison to the rest of the world. The combination of market size and economic growth makes Greater China the most promising place in the world for Internet products and services. China, Taiwan and Hong Kong recognize the opportunities and via public and private initiatives are investing in the development of information technology (IT) and the Internet infrastructure. This paper outlines the key electronic commerce (EC) trends and events in the region. Further, the research analyzes the current impediments to Internet commerce in China. Taiwan and Hong Kong and provides strategy and directions for the region's EC development.
Securing on-line credit card payments without disclosing privacy information
(2003-05-01)
Hwang, JJ
;
Yeh, TC
;
Li, JB
;
資訊管理與財務金融系註：原資管所+財金所
;
Department of Information Management and Finance
Two revisions of the original Secure Electronic Transaction (SET) protocol are proposed to conceal cardholders' identities in the electronic marketplace in which cardholders' trust for banks can be reduced to a minimum. Constrained by being extensions of the existing card payment networks to the Internet, most on-line credit card payment schemes in use or proposed in recent papers assume the sensitive card information could be disclosed to all the participating banks. The assumption used to work well in traditional credit card payments before. However, negative impacts such as banking scandals, closure programs due to poor management, and security problems with Internet banking are all undermining cardholders' trust in banks. The issuer is the trusted bank selected by the cardholder, but the acquirer is not. To reveal the cardholder's sensitive card information to every possible acquirer implies potential risk. Based on the need-to-know principle, the two revisions are proposed to relax the assumption mentioned above. In our solutions, the sensitive card information is well protected along the way and can be extracted only by the issuer. A cardholder needs only to select a trustworthy issuer, instead of worrying about the possible breakdowns of every involved acquirer. The cost to achieve our more. secure schemes demands only minor information modifications on the legacy system. (C) 2002 Elsevier Science B.V. All rights reserved.
Internet and e-commerce adoption by the Taiwan semiconductor industry
(2005)
Peng, YC
;
Trappey, CV
;
Liu, NY
;
管理科學系
;
Department of Management Science
Purpose - To determine the status of internet and e-commerce adoption by the Taiwan semiconductor industry, the research is designed to help government and enterprise in formulating strategic plans and making resource allocation decisions. Design/methodology/approach - Using the three-level model of internet commerce adoption (MICA), a survey of 287 companies and web sites was designed. Semiconductor firms were placed into five categories: integrated circuit (IC) design, manufacturing, packaging, IC testing, and peripheral device manufacturing. Findings - The MICA model shows the internet adoption ratio for semiconductor firms as 82.6 percent, significantly higher than the electronics and electrical machinery industry sector (56.5 percent). The IC manufacturing and packaging segment are in the processing stage, the final stage of development for the MICA model. One-third of the IC testing industry segment falls into the provision stage, and 36.1 percent web sites are in the processing stage. The IC design and peripherals industrial segments are located in the provision stage. Practical implications - The IC manufacturing segment is conducting more financial transactions than the other segments - a result that matches earlier research showing that larger companies are most likely to implement e-business applications. Many enterprises in the industry are lagging with the adoption of the internet indicating a need for education and training. Originality/value - This benchmark study provides a framework for evaluating the internet adoption status of semiconductor and other high technology firms. The MICA model is demonstrated to be suitable for evaluating the different stages of internet adoption.
Identification of factors affecting continuity of cooperative electronic supply chain relationships: empirical case of the Taiwanese motor industry
(2005)
Yeh, YP
;
交大名義發表
;
National Chiao Tung University
Purpose - To explore the factors affecting continuity of cooperative electronic supply chain relationships in Taiwanese motor industry. Design/methodology/approach - This study has developed a research framework that integrates the three perspectives of resource dependence, risk perception, and relationship marketing to identify the factors affecting the continuity of a cooperative electronic supply chain. After constructing a structural equation model, empirical testing on 851 raw material and spare parts suppliers for the Taiwanese motor industry was conducted. Findings - All path coefficients in the proposed model were statistically significant, and were as hypothesized. Resource dependence, trust, and relationship commitment are positively related to the continuity of the cooperative electronic relationship. Risk perception is negatively related to the continuity of the cooperative electronic relationship. Research limitations/implications - This paper has theoretically developed an extensive set of interrelationships among these variables (resource dependency, perceived risk, trust, relationship commitment, and continuity of cooperative electronic relationships), illustrating their comparative effects on supplier intention to use the internet for on-line transactions. Practical implications - This empirical study provides consistent support for the proposed business-to-business (B2B) e-commerce acceptance model. Given the high explanatory power of the resulting model, it is likely to serve as the basic model for predicting supplier behavior, and the continuity of enhanced understanding of cooperative electronic relationships. Originality/value - Previous studies did not fully address the relevant influential factors related to the continuity of cooperative electronic supply chain relationships or the causal relationships among these factors. The primary contribution of this research is the integration of constructs associated with resources, environmental uncertainty, and relationship marketing, into a coherent model that jointly predicts supplier acceptance of e-commerce.
HPRS: A profitability based recommender system
(2007)
Chen, Mu-Chen
;
Chen, Long-Sheng
;
Hsu, Fei-Hao
;
Hsu, Yuanjia
;
Chou, Hsiao-Ying
In electronic commerce, recommender systems are popularly being used to help enterprises for satisfying customers' individually diverse preferences. These systems learn about user preferences over time and automatically suggest products that fit the learned model of user preferences. In tradition, recommendations are provided to customers based on purchase probability and customers' preferences, without considering the profitability factor for sellers. This work presents a new profitability-based recommender system, HPRS (Hybrid Perspective Recommender System), which attempts to integrate the profitability factor into the traditional recommender systems. Comparisons between our proposed system and traditional system which only considers the purchase probability clarify the advantages of our system. The experimental results show that the proposed HPRS can increase profit from cross-selling without compromising recommendation accuracy.
Efficient k-out-of-n oblivious transfer schemes
(2008)
Chu, Cheng-Kang
;
Tzeng, Wen-Guey
;
交大名義發表
;
National Chiao Tung University
Oblivious transfer is an important cryptographic protocol in various security applications. For example, in on-line transactions, a k-out-of-n oblivious transfer scheme allows a buyer to privately choose k-out of n digital goods from a merchant without learning information about other n-k goods. In this paper, we propose several efficient two-round k-out-of-n oblivious transfer schemes, in which the receiver R sends O(k) messages to the sender S, and S sends O( n) messages back to R. The schemes provide unconditional security for either sender or receiver. The computational security for the other side is based on the Decisional Diffie-Hellman (DDH) or Chosen-Target Computational Diffie-Hellman (CT-CDH) problems. Our schemes have the nice property of universal parameters, that is, each pair of R and S need not hold any secret before performing the protocol. The system parameters can be used by all senders and receivers without any trapdoor specification. In some cases, our OT(n)(k) schemes are the most efficient ones in terms of the communication cost, either in rounds or the number of messages. Moreover, one of our schemes is extended to an adaptive oblivious transfer scheme. In that scheme, S sends O( n) messages to R in one round in the commitment phase. For each query of R, only O( 1) messages are exchanged and O( 1) operations are performed. The preliminary version of this paper was published at PKC ' 05 [ Chu and Tzeng 2005].
Developing recommender systems with the consideration of product profitability for sellers
(2008-02-15)
Chen, Long-Sheng
;
Hsu, Fei-Hao
;
Chen, Mu-Chen
;
Hsu, Yuan-Chia
;
運輸與物流管理系註：原交通所+運管所
In electronic commerce web sites, recommender systems are popularly being employed to help customers in selecting suitable products to meet their personal needs. These systems learn about user preferences over time and automatically suggest products that fit the learned model of user preferences. Traditionally, recommendations are provided to customers depending on purchase probability and customers' preferences, without considering the profitability factor for sellers. This study attempts to integrate the profitability factor into the traditional recommender systems. Based on this consideration, we propose two profitability-based recommender systems called CPPRS (Convenience plus Profitability Perspective Recommender System) and HPRS (Hybrid Perspective Recommender System). Moreover, comparisons between our proposed systems (considering both purchase probability and profitability) and traditional systems (emphasizing an individual's preference) are made to clarify the advantages and disadvantages of these systems in terms of recommendation accuracy and/or profit from cross-selling. The experimental results show that the proposed HPRS can increase profit from cross-selling without losing recommendation accuracy. (c) 2007 Elsevier Inc. All rights reserved.

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