• Journal of Korea Society of Industrial Information Systems
• /
• v.11 no.5
• /
• pp.207-215
• /
• 2006

In this paper, we attempt to investigate the factors influencing usage and acceptance of ubiquitous services in campus, based on the Technology Acceptance Model(TAM). This study conceptualizes and develops three dimensions of u-Services, such as real time service, information security, customization service, and tests the relationship among u-Services, perceived usefulness and perceived ease of use, and intention to use. Data were collected from 162 respondents in K-University and research model was tested using multiple regression analysis. As a consequence, this study found that customization service is an important factor which is influenced to perceived usefulness and perceived ease of use.

• Journal of the Korean Society for Railway
• /
• v.13 no.3
• /
• pp.327-332
• /
• 2010

In this paper we presents an approach to assessing the efficiency of freight railroad stations reflecting freight item importance weights with multiple performance indicators and multiple operational condition indicators. We evaluate 187 freight railroad stations using data envelopment analysis with assurance region. Each freight item's loading/unloading volume is used as a performance indicator. Freight labor and yard capacity are used as operational condition indicators. Freight item importance weights are reflected to the data envelopment analysis as assurance region. The evaluation results facilitates the organization's decision making by providing valuable information.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.26 no.3
• /
• pp.777-785
• /
• 2016

Engineering education accreditation addresses evaluation for program outcomes according to educational objectives and assessment process, which students are expected to obtain by the time of graduation in order to train international competitive engineers with continuous quality improvement in engineering programs. This paper shows a case study of a program outcomes assessment system including performance criteria, evaluation process, document system and continuous quality improvement process and an achievement evaluation by the assessment system for program outcomes in Information Security Program of Hoseo university.

• The Transactions of the Korean Institute of Electrical Engineers
• /
• v.37 no.10
• /
• pp.694-701
• /
• 1988

Distributed-type railguns are designed to maintain the armature current and the length between the armature and the current-feed region nearly constant with time. This paper deals with factors affecting current distribution, effective resistance and effective skin depth in the rail of a distributed-type railgun. Analytical solutions for the current distributions and resistance in the rail are presented for a simple two-dimensional model under steady-state contions. For diffusion limited current, it is found that effective rail resistance is proportional to the square root of the relative velocity, the permeability of the rail and the length between the armature and that effective skin depth of the rail is proportional to the square root of the length and inversely proportional to the square root of the permeability, the conductivity and the velocity.

• Journal of Digital Contents Society
• /
• v.14 no.2
• /
• pp.171-178
• /
• 2013

Desktop grid computing is the computing paradigm that can execute large-scale computing jobs using the desktop resources with heterogeneity and volatility. However, such the computing environment can not guarantee the stability and reliability of task execution because the desktop resources with different performance can freely participate and leave in task execution. Therefore, in this paper, we design resource grouping scheme using k-means clustering algorithm with an aim to provide desktop grid computing with the stability and reliability of task execution. Moreover, we conduct resource grouping using the execution log data of actual desktop grid systems and present application methods of desktop resource groups to fault-tolerance.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.20 no.1
• /
• pp.123-128
• /
• 2010

To increase the chance of the success of project, it is necessary to identify the important factors influencing the performance of project. Cognitive map has been used for analysing by investigating causal links among relevant factors. A fuzzy cognitive map (FCM) is an extension of a cognitive map with the additional capability of representing feedback through weighted causal links. Project performance is influenced by several factors such as input resources, possibility of achievement, concern of others and so on. The object of this paper is to develop the project success model of enterprise using a fuzzy cognitive map approach to investigate the degree of causal relationship between project performance and these factors.

• Proceedings of the Korean Information Science Society Conference
• /
• 2005.07b
• /
• pp.184-186
• /
• 2005

본 논문에서는 국가 출연연구소에서 수행하고 있는 연구과제들의 기본적인 정보와 각 연구과제에서 산출된 다양한 연구결과(논문, 세미나, 지적재산권 및 기술이전) 정보를 수집/관리하고 이를 다양한 형태의 정보로 기관 정보 관리자, 연구자, 일반 대중물 대상으로 서비스하는 시스템에 대해 소개하고자 한다. 본 시스템을 구축하여 서비스함으로써 산발적으로 수행되어 오던 연구개발 정보를 통합 서비스할 수 있는 기반이 마련될 수 있고, 이로 인해 다양한 연구 분야의 결과를 보다 입게 접할 수 있어 연구결과의 효과적인 전파 및 새로운 융합기술연구 유도에 도움을 줄 수 있게 될 것이다. 또한 체계적인 정보 수집 방안을 마련하고 수집된 정보에 대한 검색 및 조회 서비스, 연구 성과 통계제공, 기관별 연구 성과 비교 등의 서비스를 제공함으로써 향후 국가차원의 연구개발 정책 추진 및 지원에 필요한 보다 객관적인 근거를 제공할 수 있게 될 것이다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.11
• /
• pp.4220-4227
• /
• 2010

Recently there have been many arguments about the admission officers system, but the majority of researches about admission officer has not focused student performance. We compared learning performances of students selected by admission officers and students selected by standardized test. We checked the marks of students at college entrance point and the average grade for their freshman year. Analyzing the data, we got two major findings. At the point of entrance, the students selected by admission officers had less performances. But the analysis of average grade for 1 year, there were no statistical differences between two groups of students.

• Journal of the Korea Society of Computer and Information
• /
• v.6 no.4
• /
• pp.38-44
• /
• 2001

The integration of concurrency and object-oriented programming paradigm has been a goal of researchers for over a decade. The concurrent object-oriented programming languages used for various concurrent applications development. However, concurrency and inheritance have conflicting characteristics, thereby inhibiting their simultaneous use without heavy breakage of encapsulation. This conflicting phenomenon is known as inheritance anomalies, have been limited in applicability and have not addressed all the issues that synchronization raises. In this paper, the behavior description equation is introduced for the solution for the conflicting phenomenon, between inheritance and object-based concurrency. As a result, it can solve the several inheritance anomalies and is not necessary to redefine method. Therefor, it offers flexible concurrency model with an emphasis on the reuse of both synchronization and function code.

• Journal of the Korea Society of Computer and Information
• /
• v.18 no.8
• /
• pp.141-148
• /
• 2013

Traditional face-to-face university education has shifted its course to combine the advantages of both online and offline education in a blended-learning approach. However, there is still much that is unknown about the actual effect of blended learning, particularly it's learning outcomes in terms of cost effectiveness. This study qualitatively examines the costs and the learning outcomes of blended learning at an on-line college and off-line university. Online college level English pedagogy courses and blended with offline operations at an online university were studied across two semesters in terms of the quality of education, and both direct and indirect cost savings. Other causes for various learning outcomes and cost implications are proposed and validated.