• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.955-960
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• 2008

Supporting the interactive relation between gamer and computer, and offering the game world information, the user interface in online games plays an important role for a gamer to lead game into the intended direction. The purpose of this study is to analyse a currently utilized online game with educational implications and to analyse its user interface design elements, in order to suggest the strategy how to reformative educational online games.

• Proceedings of the Safety Management and Science Conference
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• 2010.11a
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• pp.349-355
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• 2010

EPCIS(EPC Information Services) system is a core component of EPCglobal Architecture Framework offering information of the freights, the time of awareness and the location of awareness on the EPCglobal Network. The role of EPCIS is to exchange information based on EPC. There are four kinds of event data which are object event data, aggregation event data, quantity event data, and transaction event data. These EPCIS events data are stored and managed in EPCIS repository. This paper leads to separate a in-out data overload of integrated EPCIS event and suggests the method to effectively manage EPCIS repository for exchanging data smoothly. In order to verify a effectiveness, we measure the performance of the system using a simple testing simulation by comparing existing method and suggested method.

• Management & Information Systems Review
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• v.12
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• pp.117-136
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• 2003

Korea has suffered from unemployment of workers discharged from the companies and graduates, and matriarchs since 1997's IMF. Since then Korea has fallen into economic depression, therefore the graduates have not employed for several years and lots of workers have been discharged from their positions. SOHO(Small Office Home Office) is able to be considered as the alternative employing measure of the unemployers. SOHO foundation makes a great contribution to job creation and the social welfare throughout the country. Since its foundation needs small-scale facilities and investment, the discharged and unemployed can found SOHO easily and will do good business. Korea government should practice policies in order to promote SOHO foundation as follows. First, Korean government should enlarge various support measures for SOHO foundation, namely offering of useful information and promoting of SOHO foundation, etc. Second, she should carry out the SOHO foundation education for juveniles. In order to do this project, colleges and universities adopt the SOHO foundation lesson in the education course. Third, government should enlarge various government subsidies of SOHO foundation for the benefit of the discharged and unemployed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.1
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• pp.199-205
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• 2009

Supporting the interactive relation between gamer and computer, and offering the game world information, the user interface in online games plays an important role for a gamer to lead game into the intended direction. The purpose of this study is to analyse a currently utilized online game with educational implications and to analyse its user interface design elements, in order to suggest the strategy how to reformative educational online games.

• Industrial Engineering and Management Systems
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• v.3 no.2
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• pp.116-122
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• 2004

This paper presents a process plan selection model with multiple objectives. The process plans for all parts should be selected under multiple objective environment as follows: (1) minimizing the sum of machine processing and material handling time of all the parts considering realistic shop factors such as production volume, processing time, machine capacity, and capacity of transfer device. (2) balancing the load between machines. A multiple objective mathematical model is proposed and an evolutionary algorithm with the adaptive recombination strategy is developed to solve the model. To illustrate the efficiency of proposed approach, numerical examples are presented. The proposed approach is found to be effective in offering a set of satisfactory Pareto solutions within a satisfactory CPU time in a multiple objective environment.

• Journal of the Korean Operations Research and Management Science Society
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• v.24 no.3
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• pp.13-26
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• 1999

Recently, information technology and information system(IS) are rapidly diffused throughout the world. In the global competitive environment, the success of IS becomes the important one among the critical success factors(CSF) of the firm. For achieving it, the firm must continually involve itself in the quality evaluation and improvement of IS. The quality concept was changed into the customer-oriented quality one. There is no exception to the quality of IS. In the past, IS quality was determined by the IS developer or IS department offering service. Now it is evaluated by the user of IS service, and then the customer-oriented user satisfaction becomes an important issue. The purpose of this study is to develope the total quality evaluation model of IS through TQM approach. First, all success factors of the domestic IS are extracted from the foreign and domestic literatures of IS success factors contained the technical and behavioral aspects. And the extracted factors are classified with evaluation levels for quality evaluation and developed into a total quality evaluation model. Finally the model usefulness is analyzed.

• Journal of Korean Library and Information Science Society
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• v.22
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• pp.327-349
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• 1995

In comparing with the role, scope, and description method of edition statement between monograph and old traditional books, There are some problems solving as follows : 1) Kind of issue offering information on variant imprint must be distinguished from edition merely identifying the newest thing among same materials in the edition area of old traditional books. 2) because of a rule that edition statement follow title statement according to ISBD, could not make a most of the characteristics of old traditional books. As a result of a n.0, pplication MARC format for solving above the problems, the followings have been identified. 1) Subfield in the 245tag can be made a distinction between kind of issue and edition with when describing edition statement of old traditional books. 2) As defining newly the Fixed-Length Data Elements of Marc format, not only basic index terms, such as author, title, etc., but also edition statement on variant kind of issue will be able to provide with restrict index terms.

• The Journal of Information Systems
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• v.18 no.3
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• pp.211-229
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• 2009

Recently, trends of information technology development include offerings of service for personalization, intelligence, and convergence. The research suggested a new tour system that tourists can make their tour packages by applying Semantic Web technology. The system includes ontologies and inference rules for offering intelligent and personalized service. Our system called MYT (Make Your Tour-package) was successfully demonstrated by employing realistic scenarios. Current version of the MYT system needs manager's intervention to link and integrate automatically ontology subsystem and Web service. In further study, the MYT will be extended to the system including a component integrating automatically subsystems and a component capturing and processing context data from RFID/USN.

• Journal of information and communication convergence engineering
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• v.7 no.2
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• pp.98-106
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• 2009

Process Control Systems (PCSs) or Supervisory Control and Data Acquisition (SCADA) systems have recently been added to the already wide collection of wireless sensor networks applications. The PCS/SCADA environment is somewhat more amenable to the use of heavy cryptographic mechanisms such as public key cryptography than other sensor application environments. The sensor nodes in the environment, however, are still open to devastating attacks such as node capture, which makes designing a secure key management challenging. In this paper, a key management scheme is proposed to defeat node capture attack by offering both forward and backward secrecies. Our scheme overcomes the pitfalls which Nilsson et al.'s scheme suffers from, and is not more expensive than their scheme.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.7A
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• pp.781-785
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• 2004

Mobile IP maintains Internet connectivity while Mobile Hosts moving from one Internet attachment point to another. However, Mobile If is not appropriate for seamless mobility. Some micromobility protocols were proposed to complement Mobile IP by offering fast and seamless handoff control in limited geographical areas. In this paper, a new scheme, based on path prediction and resource reservation, is proposed to reduce the handoff latency by trying to eliminate the link setup time for fast handoff in all-IP wireless networks. Analytical results show that the proposed scheme offers shorter handoff delay and can improve the handoff efficiency.