• Asia pacific journal of information systems
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• v.6 no.1
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• pp.195-222
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• 1996

Faced with the challenge of reducing costs and improving competitive position, firms have recognized outsourcing as an important information systems (IS) strategic option. It has not been understood clearly what determines IS outsourcing. Based on the IS literature and transaction cost economics, cost efficiency related factors were identified, and a questionnaire survey was conducted. The results based on 181 responses from the bank executives in U.S. revealed that vendor production cost advantage and transaction risk are significant predictors of degree of outsourcing and outsourcing preference for data processing services. Insufficiency of IS funds and information technology uncertainty were found to be not only positively associated with vendor production cost advantage, but also directly associated with outsourcing preference and degree of outsourcing. Firm size is, however, not significantly related to vendor production cost advantge and IS outsourcing.

• Asia pacific journal of information systems
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• v.13 no.3
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• pp.213-242
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• 2003

This paper employs the lens of the resource-based view(RBV) to investigate how firms create competitive advantages through IS outsourcing arrangements. The RBV framework is used to explore how a firm adds value and reaps benefits from IS outsourcing arrangements. The primary finding is that in the process of value creation, the 'absorption' of the managerial and technical capabilities of external vendors is critical. When the client firm is able to absorb and integrate the IT capabilities of outsourcing vendors, these absorbed capabilities in turn become the source of IT competence and competitive advantages $vis-\grave{a}-vis$ the competition.

• Asia pacific journal of information systems
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• v.6 no.2
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• pp.221-254
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• 1996

Information systems outsourcing takes diverse forms for various reasons. In order to analyze the diverse types of outsourcing relationships between outsourcing vendors and clients, two dimensions of outsourcing decisions proposed by Nam et. al. (1996), "the extent of substitution by vendors" and "the strategic impact of outsourced IS applications", are utilized as a framework. Four cells depicting types of outsourcing relationships are described based on the two dimensions. This paper studies the outsourcing experiences of four representative firms selected from 15 case study firms located in the U.S. within the framework of the proposed four types of outsourcing relationships. The movement of four firms in terms of its outsourcing decision within and across the cells is examined in order to derive the managerial guidelines over time.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2003.05a
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• pp.110-116
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• 2003

최근 기업들은 생산성 향상과 새로운 기회의 창출이라는 관점에서 e-Business 기업으로의 변환을 시도하고 있다. e-Business 기업으로의 변환에 있어서 솔루션의 도입은 거대한 자본이 소요되어 특히 중견/중소기업으로서는 엄두도 내질 못하는 실정이다. 이로 인하여 IT 아웃소싱의 극대화된 형태로 대두된 ASP를 이용하여 임대하는 성향이 나타나고 있는데, ASP는 웹을 기반으로 하여 어플리케이션을 공급하는 형태로 로컬 ERP를 도입하는 것과 비교해 볼 때 초기투자에 따른 자본절감효과를 누릴 수 있는 등의 여러 가지 장점을 지니고 있으므로 e-Business 구축에 적합한 형태라 볼 수 있다. 하지만 ASP의 활성화는 매우 더디게 진행되고 있으며 중견/중소기업들의 ASP에 대한 인식부족은 이들 더욱 지체시키고 있다. 따라서 본 논문은 ASP를 이용한 ERP구축의 사례를 연구하고 명확한 ASP의 도입을 위해 필요한 요소들을 살펴보고자 한다.

• Proceedings of the Safety Management and Science Conference
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• 2003.05a
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• pp.37-42
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• 2003

Recently, information systems(IS) outsourcing has become a very important management strategy of implementing IS and many studies on the IS outsourcing approach had been largely performed in the organizations, but it isn't still show how to outsource the IS functions and how to decide quantitative magnitude for judgement. To offer a quantitative decision model that can help practitioners set priority and reap the most benefits from outsourcing, we show outsourcing structure including 3 factors(strategic benefit, economic benefit and technological benefit) and sub-levels which. is different from the Yang and Huang's model. Also, we compute the weight of alternatives using analytic hierarchy process to find a priority of the IS outsourcing. As a result of analysis, we suggest systematic steps and quantitative model to increase the precision of decision making.

• Journal of Information Technology Applications and Management
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• v.13 no.4
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• pp.181-195
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• 2006

In recent years, increasing attention has been paid on how to manage a successful relationships between the receiver and provider of the Information Systems(IS) outsourcing services. This study explores the sources of influence for successful outsourcing relationships. Based on the Jaworski's control combination model for marketing, we (1) propose a management combination model of outsourcing relationships where trust is introduced as an intervening variable and outsourcing compleyity as a moderating variable, (2) test this model using a sample of 94 outsourcing projects in 36 organizations that have outsourced there IS functions to external service providers. The results indicated several significant findings. First, the deployment of management mechanism such as contract mechanism and trust building has a significant effect on the outsourcing success through trust only. Second, complexity of outsourcing activities has a moderating effect on relationship management combinations.

• Journal of Information Technology Services
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• v.1 no.1
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• pp.149-159
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• 2002

It is estimated that the world market size of the outsourcing of information system will be 780 billions in 2004, and that of ASP, one of outsourcing markets, will be 24 billions in 2005. The domestic outsourcing market also has 6 times grown in 2001 compared to the size in 2000. However, there have been only a few systematic researches about information system outsourcing and ASP in Korea. Though the importance of ASP has been recognized, no business model has been examined. So, this research was done to survey the outsourcing of information system and the meaning/present status of ASP, and to consider several factors to successfully introduce this service to companies. Especially, this research focused on ASP.

• Journal of the Korea Society of Computer and Information
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• v.8 no.1
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• pp.156-165
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• 2003

The purpose of this study is concerned with possibilistic decision making model (PDMM) that can be used to help CEO and information systems managers decide which information systems should be selected. The application of IT which has influence on rapidly changed environment of enterprise plays an important role in enterprise's activity. When enterprise outsource IT, it is very important to select vendors that reflect goals and constraints of organization. For this purpose, mathematical model in which possibilistic programming is applied is suggested in this study. Although many researches have conducted in conventional programming and stochastic programming. they are still limited in solving practical problems and imprecise/uncertain situations. Multiple decision making model in which impreciseness of input variable is considered can be constructed in PDMM.

• KIPS Transactions on Computer and Communication Systems
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• v.10 no.9
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• pp.243-250
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• 2021

Recently, with the development of cloud computing, interest in database outsourcing is increasing. However, when the database is outsourced, there is a problem in that the information of the data owner is exposed to internal and external attackers. Therefore, in this paper, we propose a parallel range query processing algorithm that supports privacy protection. The proposed algorithm uses the Paillier encryption system to support data protection, query protection, and access pattern protection. To reduce the operation cost of a checking protocol (SRO) for overlapping regions in the existing algorithm, the efficiency of the SRO protocol is improved through a garbled circuit. The proposed parallel range query processing algorithm is largely composed of two steps. It consists of a parallel kd-tree search step that searches the kd-tree in parallel and safely extracts the data of the leaf node including the query, and a parallel data search step through multiple threads for retrieving the data included in the query area. On the other hand, the proposed algorithm provides high query processing performance through parallelization of secure protocols and index search. We show that the performance of the proposed parallel range query processing algorithm increases in proportion to the number of threads and the proposed algorithm shows performance improvement by about 5 times compared with the existing algorithm.

• Journal of the Korean Data and Information Science Society
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• v.21 no.2
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• pp.251-262
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• 2010

While outsourcing has become a basic strategy of the information system adoption, there is an emerging needs to analyze the gap between the required data and the existing data for the new system from an adopting company's perspective. In CRM adoption failure cases, the first reason is adopting company pay no attention to the data that will support investment and systems. So far, there is no attempt to consider data driven approach in information system adoption field. Hence, we propose Information System Adoption Model based on Data (ISAMD) and show how to use in real world by simulation. By using ISAMD, information system adoption decision maker can simulate the needed data and related cost with various information system alternatives in short term, and long term planning. ISAMD can prevent the possible threat of unexpected data cost in adopting new system at the adopting decision stage.