• Proceedings of the KSR Conference
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• 2003.10c
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• pp.258-264
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• 2003

Requirement engineering is being highly required for developing a new system nowadays because systems become more and more complex. System engineers require clear and distinct user requirement to avoid mistakes taking placing and mitigate the risks such over cost, schedule delay, and performance degradation during system engineering activities. The exact requirement elicitation make it possible to develop a systems to meet users need. In this paper, we presented a process and methodology to develop requirement for application to Automatic Train Control System. In the methodology and process presentation. we presented a key words to elicit requirement and showed how to analyse and validate the given requirement for ATC system.

• Journal of Energy Engineering
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• v.13 no.3
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• pp.219-227
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• 2004

World have been encouraged to develop technologies that contribute to CO$_2$ emission reduction for many years. Those technologies can be categorized into capture, storage or sequestration, utilization, etc. There have been lots of efforts, in Korea, to develop the technology as well. In this paper, the impact factors of the technologies, especially in CDRS (Carbon Dioxide Reduction & Sequestration Center), were selected and were weighed by SMM (Storing Models Method) and AHP (Analytic Hierarchy Process) in order to evaluate the four representative areas of the technologies.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.1081-1083
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• 2009

Several construction management systems, such as CIC, CALS, PMIS etc., are only focused on visualizing or collecting data without linking between them. So, it is required to develop a new concept construction management system able to control data throughout the construction process. The purpose of this study is to develop prototype of web-based BPMS, which implements whole information flow for each construction phase effectively by storing common data in general building constructions.

• International Journal of Advanced Culture Technology
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• v.8 no.4
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• pp.200-206
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• 2020

Digital storytelling, a 21st century educational tool that combines digital media with storytelling, is considered as a powerful tool to learn foreign languages in an authentic and meaningful way. This study explored cyber university students' perceptions and experiences with a digital storytelling project implemented to enhance their English writing and speaking skills. The results of 9 week-long research indicated that most of the students' attitudes were positive: the digital storytelling project was effective to increase their English skills, learning motivation and interest in learning English. Most students perceived that the process writing approach and videotaping tasks provided them with good opportunities to develop their English writing and speaking skills. Although many students had difficulties selecting a topic and writing a script in the initial stage, they could handle with these challenges with the help of professors' feedback and successfully completed their projects. After completing the project, most students expressed a strong sense of accomplishment. These results suggest that the digital storytelling project effectively met cyber university students' learning needs and facilitate their English learning.

• Journal of Families and Better Life
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• v.19 no.1
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• pp.235-251
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• 2001

The purposes of this study was to develop household debt management education and counseling programs. The issues related with the consumer use of credit were identified and the selected programs of the United States were analyzed to develop the education and counseling programs for Korean households. Curriculums for the debt management education in three subjects and the process for debt counseling were suggested. Debt management education program included the issues related to general credit management strategy, credit card usage, and debt burden. For debt counseling, worksheets of problem identification, budget analysis, and action planning were developed.

• Journal of the Korean Operations Research and Management Science Society
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• v.19 no.3
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• pp.93-109
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• 1994

Even though sojourn time distributions are essential information in analyzing queueing networks, there are few methods to compute them accurately in non-product form queueing networks. In this study, we model the location process of a typical customer as a GMPH semi-Markov chain and develop computationally useful formula for the transition function and the first-passage time distribution in the GMPH semi-Markov chain. We use the formula to develop an effcient method for approximating sojourn time distributions in the non-product form queueing networks under quite general situation. We demonstrate its validity through numerical examples.

• Korean Security Journal
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• no.1
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• pp.51-71
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• 1997

The private security has forty years history and it seems not to have points in exteriors. But it has many points in interior. If these points improved, our private security can develop. I discuss the development of the private security in Chapter 2 and the points in Chapter 3, and conclude in the last Chapter. If we follow the precepts, and develop a good points and improve a week points, the future of our private security will be better.

• Journal of Information Technology Services
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• v.10 no.4
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• pp.295-307
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• 2011

The purpose of this research is to find a better knowledge service R&D management process. There are four basic characteristics in service : intangibility, inseparability, inconsistency, and no inventory. These intrinsic characteristics require us to change the traditional manufacturing sector based R&D management process. It is necessary to develop an effective knowledge service R&D management model to improve the competitiveness of the service industry and Korean economy. A model case knowledge service R&D has been performed to find a better R&D management model. The whole cycle of R&D process, such as planning, selection, performing, and evaluation has been reviewed by real experience. Several important aspects of R&D process are compared between manufacturing R&D and service R&D. A knowledge service R&D management framework has been suggested. The results of this research can be used for building a better service R&D management process.

• Journal of the Korean Society of Systems Engineering
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• v.5 no.2
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• pp.57-62
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• 2009

An embedded system is a computer system designed to perform one or a few dedicated functions often with real-time computing constraints. A traditional design process of embedded systems is the development of document-centric approach, and it is difficult to develop an embedded system efficiently because communication between teams or steps is not smooth. So the Model Based Design Process are applied to the development of embedded systems. This paper will compare the Model Based Design Process and the traditional design process, and introduce example of development of vehicle device applied the Model Based Design Process.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.10b
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• pp.80-85
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• 2003

This research represents enhancement of forgeability of SNCM522H steel. Output Shaft (OP Shaft) has been used as a subject for the study. OP Shaft is used as component of power train for automobiles. To develop I pass cold forging process instead of existing 2 pass process for OP Shaft, studies in terms of process design and heat treatment were performed. To verify the new process, CAE simulations were performed. And hardness test, microstructural analysis and tensile tests after heat treatment were carried out to evaluate the validity of proposed heat treatment cycle. The 2 pass forging process could be reduced as 1 pass process through improvement of process and heat treatment cycle.