• Journal of the Korea Society of Computer and Information
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• v.9 no.2
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• pp.69-79
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• 2004

For the successful IT operation outsourcing there need appropriate metrics on which both of the service clients and provider agree. The metrics are used to set up the service level objectives, which are manifested in the service level agreement with price. A study of metrics is necessary for the following reasons: First, most of the metrics used today were introduced in the early years of computers and are not satisfactory to both of the service providers and clients. Second, metrics represent the performance of system components but not end-user satisfaction. Third, because the service provider leads the outsourcing agreement, the objectives are specified more favorable to the provider. The objectives should be based on metrics that both sides fully understand and agree on.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.16 no.1
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• pp.203-231
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• 2005

The critical strength of outsourcing system is to enhance the competitive power of the company by applying the centralization of management resources. This strategy has been used in library management and become the general method. The libraries in the U.S. stated to adopt the outsourcing system to organize the information of library works. Those in Korea also commence to use this method later on. The main reason of outsourcing the cataloging and classification works in the library was to reduce the budget; however, result were diverse. The efficiency on performing works was positive while the quality of bibliographic record was not guaranteed. Regardless of various opinions, The National Library of Korea decided to apply the method to cataloging and classification considered as a major work in maintaining library. This study is to analyze and criticize the decision made by The National Library of Korea.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.517-520
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• 2003

Recently there is a used a word-outsourcing-in the corporation circumstance. Continuous recession impelling with IMF permitted restructuring measures downsizing unnecessary organization and offered opportunity to breakup structure of 'High cost and Low efficiency' -inefficient and uneconomic production method- in our corporation. Due to the effect of such circumstance change, the construction industry have already introduced and implemented outsourcing in many parts. For successful outsourcing in the construction industry, a mutually close relations and the cooperation are preceded and JIT system is needed to improve these relations. The study recognizes the importance and proportion that outsourcing is occupyed in the construction industry, and suggests the method to improve the productivity by evaluating the factors and usefulness for JIT system to apply to the construction industry.

• Korean Journal of Construction Engineering and Management
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• v.5 no.5 s.21
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• pp.117-125
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• 2004

Recently, the word 'outsourcing' is used frequently in the corporation circumstance. Continuous recession with IMF caused restructuring measures which made unnecessary organization be downsized, and offered opportunity to breakup structure of $^{\circ}A$EHigh cost and Low efficiency, which is inefficient and uneconomic production method' in our corporation. Due to the effect of such circumstance change, the construction industry have already introduced and implemented outsourcing in many parts. For successful outsourcing in the construction industry, close relation and mutual cooperation should be preceded and JIT system is needed to improve the relation. In this study, the importance and proportion in which outsourcing is occupied in the construction industry are recognized, and the method for improving the productivity is suggested through evaluating the factors and usefulness of JIT system which can be applied to the construction industry.

• Journal of the Korean Operations Research and Management Science Society
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• v.27 no.3
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• pp.21-40
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• 2002

Recently, IT outsourcing has become a very important management strategy which implements information systems in organizations. This paper investigates the risks and strategic recognition as a key factors affecting on the degree of IT outsourcing. Specifically the risks of IT outsourcing and its four components-risk of control, risk of economical, risk of technical, risk of relational - are examined to be a negative effect on the degree of outsourcing. And strategic recognition about outsourcing is examined how to affect en the risks and the degree of IT outsourcing. To empirically test these relationships, data ere gathered from senior IT managers in 86 corporations. Results of this study show that the degree of outsourcing is strongly influenced by risk of control, risk of economical, risk of relational. But risk of technical does not influence on the degree of outsourcing. And strategic recognition about outsourcing is found that is negative effect on the risks of IT outsourcing and positive effect on the degree of IT outsourcing. The results provide a good framework to minimize the risks for IT outsourcing success.

• Journal of Korea Port Economic Association
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• v.25 no.3
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• pp.93-116
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• 2009

As the popularity of logistics service outsourcing has been continuously growing, one of the most frequently addressed issues is how to estimate the effect of cost reduction for users and profit gains from outsourcing contract for providers. Many manufacturing companies agree that logistics outsourcing helps to reduce their operating costs, but some other companies still do not achieve the cost saving or do not trust logistics service providers, so they keep up in-house logistics operations. On the other hand, logistics service providers have low profitability from domestic business activities since they should meet the requirements for highly customized and diverse services from customers and unstable market situation. This study provided the status report dealing with logistics service contracts in Korea. From the focused group interview with logistics professionals, we found out that service scope, scale and cost structure are the most influential factors affecting logistics service contracts. Also, logistics service providers are more sensitive than users regarding value-added logistics service, contract duration and process. Moreover, this study also proposed the standard clauses for logistics service contract and types of logistics contract applied in current logistics fields. As a result, it is expected that these achievements from this study can be utilized to improve the satisfaction of logistics outsourcing in upgrading service quality and customer service level.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2001.10a
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• pp.387-390
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• 2001

e-Business는 최근 IT산업에서 가장 빈번히 등장하는 화두이다. 인터넷이 빠른 속도로 보급되고 시간과 공간의 한계를 극복할 수 있는 가능성을 제공함에 따라 기존의 오프라인 시스템들의 인터넷과 연동이 추구되고 있다. 인터넷과의 연동은 단순한 정보의 공유뿐만 아니라 지식, S/W, E/W 등의 거의 모든 IT자원들에 대한 공유를 촉발시키고 있다〔1〕. 1990년대 정보기술 아웃소싱은 괄목할 만한 성장을 가져왔다. 최근 새로운 종류의 아웃소싱 비즈니스 모델인 ASP(Application Service Providers)의 등장으로 정보기술 시장의 주요 이슈로 주목받고 있다. 하지만 아직 초기단계이기 때문에 수요층의 인식부족, 효과에 대한 확신 부족 등과 같은 여러 걸림돌이 있지만 e-Business의 핵심영역으로 발전할 것으로 전망된다. ASP는 e-Business관련 소프트웨어 및 어플리케이션을 배송하는 하나의 방식이다. 즉, ASP는 e-Business를 가능하게 하는 Enabler라고 볼 수 있다〔3〕. 본 연구는 ASP(Application Service Provider, 이하 ASP)의 서비스 품질의 차원을 분류하여 고객에게 보다 중요한 품질 요인을 찾기 위한 측정의 개념적 틀을 제시하고자 한다.

• Information Systems Review
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• v.7 no.1
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• pp.173-193
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• 2005

ASP service that is emerging as a new form of application outsourcing has the advantage of lower cost and risk. Therefore, ASP service may be attractive for small firms and even some new companies. However, studies about ASP service are rare in academic and professional journals, and most of the articles about outsourcing were considering mainly large enterprises. The purpose of this article is to analyze the effects of the some context variables of Korean small businesses on ASP service usage pattern, and the effect of ASP service usage pattern on user satisfaction and firm performance. The analysis results show that firm size has a positive impact on IT need of small businesses, and IT need of small businesses have a positive impact on training period and past usage period. Also, firm size, IT need, training period has an positive impact on ASP service usage pattern. However, ASP service usage period has no relationship on ASP service usage pattern. Finally, ASP service usage pattern has a positive impact on firm performance and user satisfaction, and user satisfaction has an impact on firm performance.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.67-72
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• 2004

최근 건설산업은 공공 및 민간부문의 발주물량 감소가 가시화되고 있으며, 최저가입제에 의한 사업수익율 하락 추세는 향후 건설업 붕괴위기, 건설산업 사양산업화라는 비관적 견해가 떠돌 만큼 건설업 전반이 심각한 위기를 맞고 있다. 정부는 재정 부족으로 인하여 SOC사업의 축소조정이 불가피하지만 국가경제의 악영향 해소와 신속한 경쟁력 회복을 위해 SOC사업에 대한 투자확대와 푹소범위 최소화의 필요성을 인식하고 있으며, 이에 재정부족과 SOC 확충이라는 두가지 문제를 해격하기 위해 민간투자사업이 활성화되고 있는 실정이다. 현재, 정부에 의해 주도되고 있는 민간투자사업의 제도 및 법률의 개정방향은 피간 건설업체가 주도하던 민자사업에 대하여 연기금 및 금융권으로의 전환을 예고하고 있으나, 현실적으로 금융권이 자체적으로 SOC 사업에 대한 투자를 위한 사업 타당성 분석이 어려운 실정이므로 이에 대한 대안으로 SOC 민간투자사업에 대한 노하우를 축적한 건설업체의 SOC 민간투자사업 분야에 아웃소싱 개닐념 도입, 특화하여 효율성을 극대화 시킴으로써 사업의 안정성 확보와 동시에 투자 수익 실현을 통하여 SOC 민간투자 활성화에 견인차 역학을 할 수 있는 전문운영회사의 도입에 대하여 논하고자 한다.

• Journal of KIISE
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• v.42 no.9
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• pp.1175-1184
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• 2015

Recently, there has been an explosive increase in the volume of multimedia data that is available as a result of the development of multimedia technologies. More and more data is becoming available on a variety of web sites, and it has become increasingly cost prohibitive to have a single data server store and process multimedia files locally. Therefore, many service providers have been likely to outsource data to cloud storage to reduce costs. Such behavior raises one serious concern: how can data users be authenticated in a secure and efficient way? The most widely used password-based authentication methods suffer from numerous disadvantages in terms of security. Multi-factor authentication protocols based on a variety of communication channels, such as SMS, biometric, or hardware tokens, may improve security but inevitably reduce usability. To this end, we present a data block-based authentication scheme that is secure and guarantees usability in such a manner where users do nothing more than enter a password. In addition, the proposed scheme can be effectively used to revoke user rights. To the best of our knowledge, our scheme is the first data block-based authentication scheme for outsourced data that is proven to be secure without degradation in usability. An experiment was conducted using the Amazon EC2 cloud service, and the results show that the proposed scheme guarantees a nearly constant time for user authentication.