• Review of KIISC
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• v.12 no.5
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• pp.70-75
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• 2002

GSM(Global System for Mobile Communications)은 현재 가장 광범위하게 사용되고 있는 디지털 이동 통신의 표준이다. 또한 GSM 표준에서 데이터 전송의 최종 evolution 버전인 EDGE(Enhanced Data for GSM Evolution)와 GSM Phase2＋ 개발의 일부분인 GSM 망에서 packet switching을 구현하는 기술인 GPRS(General Packet Radio Service)가 현재 유럽의 정보통신 표준화 기구인 ETSI(European Telecommunications Standards Institute)에 의해 표준화가 진행 중에 있다. GSM 시스템은 사용자 데이터의 기밀성을 보장하기 위한 암호화 알고리즘 A5를 사용하고 있지만 그 취약성이 계속 보고되고 있다. $^{[10,11]}$ 따라서 GSM의 강화된 암호화 알고리즘과 EDGE와 GPRS에서 사용자 데이터를 보호하기 위한 새로운 암호화 알고리즘의 개발이 요구되어왔다. 최근 ETSI의 SAGE(Security Algorithms Group of Experts)는 이러한 목적을 달성할 수 있는 새로운 표준 암호화 알고리즘 A5/3과 GEA3을 개발하였다. $^{[3,4,5,6]}$본 고에서는 GSM, EDGE, GPRS에서의 새로운 표준 암호화 알고리즘 A5/3과 GEA3을 분석하여 정리하고자 한다.

• Review of KIISC
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• v.19 no.1
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• pp.103-114
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• 2009

SNS (Social Network Service) 사이트는 사용자의 개인정보를 비롯하여 친구 정보, 설치된 응용정보 등으로 구성되는 아이덴티티를 친구 관계를 맺고 있는 다른 사용자에게 제공하고 있다. 따라서 SNS를 통해 공유되는 아이덴티티는 개방과 공유를 중심으로 하는 웹2.0 환경에서 어떻게 관리되고 운용되느냐에 따라 SNS 사용자들에게 이득이 되거나 피해로 다가올 수 있다. 본 고에서는 앞으로 사용이 증가할 것으로 예상되는 SNS 서비스에서 웹 2.0의 아이덴티티를 공유함으로써 사용자의 편리성과 업무 효율성을 제고할 수 있는 대표적인 서비스 시나리오에 대해 연구하고 구축된 Mockup SNS 사이트에서 구현한 사례를 제시한다. 그리고 사용자의 아이덴티티 이용이 아이덴티티 소유자에 의해 통제될 수 있는 지원체계 마련의 필요성과 프라이버시 보호 측면에서의 고려사항에 대해 논의한다.

• Journal of the Korean Home Economics Association
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• v.49 no.8
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• pp.113-124
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• 2011

The aim of this study is to conduct an evaluation review of the contents of the career education unit in textbooks on technology and home economics for senior high school freshmen. This study adopted the "Objective & System of Career Education" established by the Korea Research Institute for Vocational Education & Training as the criterion for evaluating the content of career education, and targeted the unit, "Design of Vocation & Careers", which was included in six different textbooks on technology and home economics for senior high school freshmen involving five different publishers. The unit of "Design of Vocation & Careers" was mostly written in three subunits. An analysis of the textbooks by different, publisher showed that every aspect of the "Objective & System of Career Education" was appropriately covered in the unit. This was achieved by means of the elements of contents and illustrations.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.13
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• pp.897-908
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• 2000

Customs clearance is one of systems controlled by a customhouse that administrate all exported or imported goods passed frontier. This customs clearance systems of china and korea equally means, but it find obvious that customs law and rule, customs formalities between china and korea differ greatly. Therefore, this article describes a customhouse controlling exportation and importation, company dealing clearance service as the subject of customs clearance and customs formalities in order to generally analyse on customs clearance systems of China. As a result, this seeks for problems of customs clearance systems in China and a means of settling a trouble.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.14
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• pp.75-102
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• 2000

At present, on increasing to use a computer network and internet network, Internet Trade has been rapidly created and developed in international Electronic Commerce. However, Internet Trade has not been continued to grow up without supporting by a efficient Logistics System. Because it is very important to delivery contract commodities to consumer with speedy, accurate, steady, convenient services. International Logistics System is consisted of demand forecasting, order processing, packing, labeling, shipping documentation and consumer service into three distant phases of transaction, distribution and payment. International Logistics System can be done more efficiently and effectively by using Internet Logistics System. Therefore it is very important to implementing a efficient Internet Logistics System.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.12
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• pp.349-376
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• 1999

The objective of this paper is to identify the problems of Korean inland transportation system and suggest the improvement plan for reducing the export logistics cost. The results are as follows: (1) Expansion of logistics hub facilities : Logistics hub facilities- integrated freight terminal and ICD, etc. can shorten the empty leg and reduce the logistics cost. (2) Design for CVO(Commercial Vehicle Operations) : CVO has various functions that improve the efficiency and effectiveness of freight transportation. (3) Rationalization of freight transportation industry : In particular, the deregulation of the motor freight industry and the privatization of the railway industry induce the competition among their firms and undercut the transportation rates in the long run. (4) Use of third-party logistics : The benefits of TPL are system reliability, improved customer service, and more efficient cost performance.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.40
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• pp.147-167
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• 2008

This paper investigates changing business transaction under the e-commerce environment and their implications on freight transport industry with some case studies. It shows that an efficient and reliable delivery system is essential for e-commerce as business industries are faced with the stricter and more diversified demands of customer. In addition, many aspects of business practices such as small batch, customized production and just-in-time distribution in the e-commerce environment, in turn, bring about a number of changes in the volume and service patterns of freight transport. E-commerce requires longer transport distances and often higher delivery frequencies. It also entails to a certain extent a modal shift towards truck and air freight transport modes. On the one hand, the logistical requirements of e-commerce goods may stimulate greater complexity in existing supply chain management, causing higher costs. However it is true that the increased visibility of goods through more efficient information flow allows more efficient and effective transport management in the logistics system.

• Korean Management Science Review
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• v.3
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• pp.37-57
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• 1986

Due to the gravitation of the population to Metropoleis caused by the radical industrialization and urbanization after the 1960s. most Korean cities not only have shown the deformed urban structure, but also have faced many serious problems in the public transit system. Especially, the medium-sized cities as the center of the local life have been under the low level of public transit service because of their poor transportation facilities and inefficient operations. Under these conditions, this study aims at improving its level and quality in the local midium-sized cities by performing the following; . to suggest the new idea of the public transit policies for the medium-sized cities. . to develop the Bus Transit Management System and its related computer programs. . to apply the design policies and methods to the Suwon life-circle in order to evaluate their performance.

• Korean Management Science Review
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• v.13 no.3
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• pp.75-90
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• 1996

This paper presents an improved method of the Analytic Hierarchy Process (AHP) when customers are to select the best automobile purchase models. In order to support group decisions and as a different procedure of the conventional AHP, we combine the AHP model with a spreadsheet model that applies the Likert's rating scheme to each alternative. We only consider individual pairwise comparison matrices where the consistency ratio (C.R.) is less than or equal to 0.2. Finally, we regard the weight of each decision maker as a reciprocal number of C.R. As a case study we prioritize three passenger cars of medium size in the domestic market. The major evaluation criteria include:exterior or interior features, performance, safety, pricing, salesman, and after service.

• Korean Management Science Review
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• v.25 no.3
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• pp.135-155
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• 2008

This paper investigates the value of the expectation-confirmation model(ECM) of IT continuance in the internet shopping environments and attempts to expand the ECM with consideration of users diverse internet shopping factors and their preferences. Here, the extended ECM measures the users expectation-confirmation separately at the product, site and service levels, rather than treating it a single construct as measured in the original model. Further, AHP has been used for assessing the relative importance among the shopping factors, and the priority has been used for deriving weighted expectation-confirmation levels in the model. PLS analysis shows that there are significant differences in path coefficients between the ECM and a weighted ECM. This Indicates that users preferences among the diverse shopping factors need to be properly assessed to better understand the relationship between users expectation-confirmation and their continued usage behavior.