• Journal of the Korean Society for Aviation and Aeronautics
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• v.24 no.1
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• pp.62-70
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• 2016

Perception of outsource workers among Incheon Int'l airport employees was reviewed about the service performances of winning the ASQ awards in 11 consecutive years. 85% of Incheon airport operating authority(Incheon International Airport Corp.) and its outsource companies employees was composed of outsource workers. Thus, their thoughts might represent the overall perception of airport operating authority employees. The perception on the service performances of winning the ASQ awards was analyzed by researchers using attribution theory model. It is useful to apply attribution modeling in order to analyze the causal relationships among variables. Attribution is the process by which individuals explain the causes of behavior and events. Attribution theory is the study of models to explain those processes. According to empirical analysis, it was found outsource workers attributed the excellent service performance of Incheon airport to such an internal factor as service competence. However it was also implied they attributed to such external factors as the positive relationship and institutional support from airport and government authorities.

• Journal of Korea Port Economic Association
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• v.30 no.2
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• pp.145-172
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• 2014

Automobile industry has several characters such as high level of specialization, large volume of production, which plays a big barrier to entry of the industry. Therefore logistics outsourcing of automobile manufacturing company tends to make long-term contract with logistics service provider which also makes it difficult to outsource their logistics business to many different types of companies. Some vehicle manufacturing companies tend to outsource their several logistics to several companies while others outsource very limited number of logistics companies even only one company exclusively. This study aims to investigate various type of logistics outsourcing in terms of advantages and disadvantages and then carry out case study for Hyundai Glovis which is a global logistics company managing logistics service of Hyundai car maker in Korea. The focus is on how it can provide innovative and efficient logistics service with integration of global supply chain of Hyundai Automobile company.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.8
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• pp.435-444
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• 2020

This study investigates the role of logistics capability and logistics outsourcing on the performance of manufacturing companies in Pakistan. It examines how logistics capability affects firm's performance, why outsourcing is essential and how firms benefited if they outsource the service rather than establishing their own logistics capability. This research is based on a survey using structured a questionnaire to collect the primary data. The target population is logistics specialists of manufacturing companies in Pakistan with head offices based on Karachi, that have their own logistics or outsource their logistics. The questionnaire has been distributed to 500 respondents in 113 manufacturing companies in Pakistan. Confirmatory factor analysis has been used as statistical techniques to check the factor loading of the components, and SEM (Structural Equation Model) is used to check the impact of logistics capability on firm's performance as well as the role of logistics outsourcing as a mediator. The findings of the research suggest logistics capability has positive impact on the performance of the manufacturing companies in Pakistan, and logistics capability has also an impact on logistics outsourcing. On the other hand, the study found that logistics outsourcing has no significant impact on the manufacturing companies in Pakistan.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.17 no.1
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• pp.145-164
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• 2023

Cloud computing offers a platform that is both adaptable and scalable, making it ideal for outsourcing data for sharing. Various organizations outsource their data on cloud storage servers for availing management and sharing services. When the organizations outsource the data, they lose direct control on the data. This raises the privacy and security concerns. Cryptographic encryption methods can secure the data from the intruders as well as cloud service providers. Data owners may also specify access control policies such that only the users, who satisfy the policies, can access the data. Attribute based access control techniques are more suitable for the cloud environment as they cover large number of users coming from various domains. Multi-authority attribute-based encryption (MA-ABE) technique is one of the propitious attribute based access control technique, which allows data owner to enforce access policies on encrypted data. The main aim of this paper is to comprehensively survey various state-of-the-art MA-ABE schemes to explore different features such as attribute and key management techniques, access policy structure and its expressiveness, revocation of access rights, policy updating techniques, privacy preservation techniques, fast decryption and computation outsourcing, proxy re-encryption etc. Moreover, the paper presents feature-wise comparison of all the pertinent schemes in the field. Finally, some research challenges and directions are summarized that need to be addressed in near future.

• Journal of Korean Society for Quality Management
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• v.38 no.1
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• pp.75-84
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• 2010

Recently, foreign labor standards accreditation system has been emerged as more firms outsource manufacturing works to global vendors focused manufacturing. This paper discuss and compare three major private labor accreditation systems and evaluate what kind of problems may emerge if they become the major global standards for labor practices. This paper concludes that private labor standards accreditation system needs more transparency in the process and should improve accountability by including other stakeholders in the process.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 1998.03a
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• pp.169-176
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• 1998

This article investigates the software acquisition problems as two dimensional : custom/pacakage and insource /outsource. The analysis adopts the cost-benefit frame work in explaining software acquisition problems and takes two leveled approach. The first level examines the cost-benefit relationship of the determinants affecting both dimensions, and these determinants are derived from theories of transaction cost, incomplete contracting, and agency. The second level focuses on the impact of general cost-benefit frivers of the software acquisition decisions. The results facilitate a broader and more detailed understanding on the software acquisition problems.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.8
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• pp.3826-3851
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• 2016

With traditional data storage solutions becoming too expensive and cumbersome to support Big Data processing, enterprises are now starting to outsource their data requirements to third parties, such as cloud service providers. However, this outsourced initiative introduces a number of security and privacy concerns. In this paper, homomorphic encryption is suggested as a mechanism to protect the confidentiality and privacy of outsourced data, while at the same time allowing third parties to perform computation on encrypted data. This paper also discusses the challenges of Big Data processing protection and highlights its differences from traditional data protection. Existing works on homomorphic encryption are technically reviewed and compared in terms of their encryption scheme, homomorphism classification, algorithm design, noise management, and security assumption. Finally, this paper discusses the current implementation, challenges, and future direction towards a practical homomorphic encryption scheme for securing outsourced Big Data computation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.6
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• pp.3254-3272
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• 2017

With the development of wireless access technologies and the popularity of mobile intelligent terminals, cloud computing is expected to expand to mobile environments. Attribute-based encryption, widely applied in cloud computing, incurs massive computational cost during the encryption and decryption phases. The computational cost grows with the complexity of the access policy. This disadvantage becomes more serious for mobile devices because they have limited resources. To address this problem, we present an efficient verifiable outsourced scheme based on the bilinear group of prime order. The scheme is called the verifiable outsourced computation ciphertext-policy attribute-based encryption scheme (VOC-CP-ABE), and it provides a way to outsource intensive computing tasks during encryption and decryption phases to CSP without revealing the private information and leaves only marginal computation to the user. At the same time, the outsourced computation can be verified by two hash functions. Then, the formal security proofs of its (selective) CPA security and verifiability are provided. Finally, we discuss the performance of the proposed scheme with comparisons to several related works.

• Asia pacific journal of information systems
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• v.10 no.3
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• pp.1-16
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• 2000

The purpose of this research is to validate the determinants of information systems(IS) sourcing strategy focusing on Korean financial institutions. Based on the factor analyses and discriminant analyses using data from 34 major Korean financial institutions, we observed that determinants of IS souring strategy are perceived risks, strategic expectations and organizational IS maturity. If the clients have clear objectives, can control the risks from IS sourcing, and have information systems in the less-matured stage, they frequently outsource their IS. In view of the IS maturity, previous studies suggest that more-matured IS are outsourced. But the results of this study show that more-matured IS are insourced. These phenomena can be explained by classifying IS by their functions. Transaction processing systems, which are mission-critical, are generally insourced, but decision support systems, which are in their mature state, are generally outsourced.

• Korean Management Science Review
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• v.34 no.1
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• pp.1-13
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• 2017

The percentage of 3PL (Third-party Logistics), which uses third party businesses to outsource elements of the company's distribution and fulfillment services, is increasing steadily. To provide 3PL service to the customers, it is needed to estimate the total transportation cost and propose the unit cost to the customers. In this paper, we develop a decision support system for estimation of transportation cost of 3PL provider considering various transportation services, such as direct transportation, multi point visiting transportation, and cross docking. The system supports route planning of vehicles by using algorithms based on tabu search and dynamic programming.