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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Information Systems
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Journal DOI :
The Korea Association of Information Systems
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Volume & Issues
Volume 19, Issue 4 - Dec 2010
Volume 19, Issue 3 - Sep 2010
Volume 19, Issue 2 - Jun 2010
Volume 19, Issue 1 - Mar 2010
Selecting the target year
Updating Policy of Indoor Moving Object Databases for Location-Based Services: The Kalman Filter Method
Yim, Jae-Geol ; Joo, Jae-Hun ; Park, Chan-Sik ; Gwon, Ki-Young ; Kim, Min-Hye ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 1~17
DOI : 10.5859/KAIS.2010.19.1.001
This paper proposes an updating policy of indoor moving object databases (IMODB) for location-based services. our method applies the Ka1man filter on the recently collected measured positions to estimate the moving object's position and velocity at the moment of the most recent measurement, and extrapolate the current position with the estimated position and velocity. If the distance between the extrapolated current position and the measured current position is within the threshold, in other words if they are close then we skip updating the IMODB. When the IMODB needs to know the moving object's position at a certain moment T, it applies the Kalman filter on the series of the measurements received before T and extrapolates the position at T with the estimations obtained by the Kalman filter. In order to verify the efficiency of our updating method, we performed the experiments of applying our method on the series of measured positions obtained by applying the fingerprinting indoor positioning method while we are actually walking through the test bed. In the analysis of the test results, we estimated the communication saving rate of our method and the error increment rate caused by the communication saving.
An intelligent system for semiconductor yield classification with soft computing techniques
Lee, Jang-Hee ; Ha, Sung-Ho ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 19~33
DOI : 10.5859/KAIS.2010.19.1.019
Study on Structural Relationship of Medical Information Quality, Usability, Attitude and Satisfaction of Hospital Web site According to Medical Examination and Treatment Subjects
Chang, Young-Il ; Jung, You-Soo ; Kim, Kyoung-Hwan ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 35~61
DOI : 10.5859/KAIS.2010.19.1.035
The Internet marketing of hospital is being considered as a strategic requirement that can satisfy the customers. Therefore, it is very important to understand the effects of the medical information on the Internet on the actual consumers. In this study, the paths through which the attitude and satisfaction of the medical information consumers that visit hospital web site are formed for the medical information through the quality of the medical information on the Internet and usability of hospital web site were examined respectively according to the medical examination and treatment subjects that respectively deal with medical acts and cosmetic acts through light metabolism recovery. The usability of hospital web site, rather than medical information quality, had positive effects on the attitudes toward the medical information distributed in the corresponding web site and the satisfaction of use of hospital web site in the case of visitors of the hospital web site for the medical examination and treatment subjects of essential medical examination and treatment and emergency medical treatment, and, on the other hand, the result of analyzing the path of the medical examination and treatment subjects of cosmetics and functional improvement revealed that the medical information quality had positive effects on the medical information attitudes and the usage satisfaction of hospital web site. Accordingly, the attitudes toward the medical information distributed through the web site by the visitors of hospital web site is formed from the quality of medical information and web site usability, and, ultimately, they become generally satisfied with the hospital web site. Such process is revealed different1y according to the medical examination and treatment subjects for which consumers desire to obtain information.
Establishment of Strategic Agility through a Logistics Information Systems: A Case Study of "H" Corporation
Kim, Chang-Sik ; Lee, Jeong-Min ; Kwahk, Kee-Young ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 63~77
DOI : 10.5859/KAIS.2010.19.1.063
Strategic agility plays a critical role in sustaining competitive advantage in the turbulent environment. This study examines the relationship between a logistics information system and, strategic agility through the analysis of "H" corporation case. The results of case study showed that the introduction of logistic information system facilitates the degree of strategic sensitivity, collective commitments and resource fluidity, which are primary elements of strategic agility. This study gives an insight to the practitioners who attempt to create strategic agility through the implementation of logistic information systems.
Development of a SOA-based Distributed Collaborative Agent in RTE Environments
Choi, Hyung-Rim ; Kim, Hyun-Soo ; Hong, Soon-Goo ; Park, Young-Jae ; Cho, Min-Je ; Choi, Sung-Wook ; Park, Chang-Hyun ; Kang, Si-Hyeob ; An, Bung-Sun ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 79~96
DOI : 10.5859/KAIS.2010.19.1.079
The organizations in the competitive business environment are under pressure of handling internal management processes as well as external supply chain issues. In addition, the paradigm of supply chain management (SCM) has been shifted from static to dynamic problems. For the efficient SCM, organizations should be a RTE (Real Time Enterprises) that views entire supply chains as a single entity. In this paper, the agent system that makes RTE and dynamic supply chains possible is developed. Then, the developed agent system is verified in the TAC SCM(Trading Agent Competition Supply Chain Management) experimental environment and a dashboard is also developed for monitoring management activities of supply chains. The contributions of this paper are as followings. First, unlike the previous agent systems, the suggested agent system in this paper provides autonomy and scalability using SOA. Second, this suggested model for dynamic environment can be applied for the development of software supporting a SCM.
A Case Study on Risk Factors and Risk Management in a Large-scale Project
Hong, Sa-Neung ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 97~116
DOI : 10.5859/KAIS.2010.19.1.097
Failures of super large projects like IT Upgrade of Shinhan Financial Group can be a heavy blow not only to the company but even to the national economy. Research on the practices of risk management in those projects will provide invaluable lessons, enhancing capabilities and chances of successfully executing mission critical projects of the companies and the national economy as a whole. This paper analyzes the risk management of the Core Systems Reconstruction which was the most critical component of IT Upgrade. The analysis covers risk management plans, and identification and evolution, and control and monitoring of risk factors. This study confirms the major results of previous research on risk management in Korea. However, the analysis found as well some discrepancies of practices from the previous research results. This research also tracked the trajectories of evolution of risk factors and management. In particular, in depth analysis of control and monitoring is the first research in Korea on the "management" of risks in IT projects. The result of this research is expected to be a useful guide for theory development and practices of risk management in the future.
The Effects of Gestalt Principles on the Perceived Usability of User Interface in a Web Context
Jung, Won-Jin ; Yim, Hyung-Rok ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 117~148
DOI : 10.5859/KAIS.2010.19.1.117
The user interface (UI) is the part of the systems that users can see, hear and feel. That means, a user can interact with the systems through the user interface. Effective user interfaces create positive feelings of success and competence. In addition, they enable users to concentrate on their work, exploration, or pleasure. The German word "Gestalt" means "whole" as well as a figure or a shape. A comprehensive information systems (IS) literature review found that there has been little empirical evidence on the Gestalt principles in UIs that affect online users' perceived usability in a Web context. Therefore, the goals of this study are to 1) examine the relationships between Gestalt principles in UIs and online users' perceived usability in a Web context and 2) come up with design guidelines to enhance user success. Using a survey, this study explored the relationships between Gestalt principles used in six Web sites and 17 aspects of usability. The results showed that in terms of 16 aspects of usability, there are significant differences among the UIs that have different levels of Gestalt principles. In practice, online stores may use these findings to improve their Web pages. Specifically, the sixteen usability attributes can be used to check whether online stores' Web pages meet customers' user interface quality expectations.
Determinants Impacting the Adoption and Implementation of RFID Technology and the Moderating Effect of Organizational Readiness
Kim, Sang-Hyun ;
The Journal of Information Systems, volume 19, issue 1, 2010, Pages 149~177
DOI : 10.5859/KAIS.2010.19.1.149
Radio Frequency Identification(RFID) is rapidly growing the attention of many firms as a care technology for their businesses. As RFID moves into the mainstream, it replaces the standard barcodes that is used to identify and track products for a long time. With the intention of gaining competitive advantages, some firms have started the changeover to RFID technology while others have been disinclined to adopt it. Thus, this study examines firms as an attempt to identify key organizational characteristics driving the ear1y adoption and successful implementation of RFID. Results from 228 adopting organizations show Organizational Needs(Ubiquity and Performance Gaps), Technological Factors(Perceived Benefits and Perceived Cost Savings) and RFID Reduced Risk have a significant influence on RFID initiation. In addition, Trust Factors(Institutional Trusts and Inter-organizational Trusts) have a significant impact on RFID Reduced Risk. Finally, Organizational Readiness(Financial Resources and Technological Knowledge) have a significant influence as moderating effects between RFID initiation and adoption. The implications of the findings propose a new theoretical framework for the future IT/IS adoption study and offer suggestions for RFID researchers and practitioners in the development of the technology.