• Proceedings of the KSME Conference
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• 2008.11a
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• pp.690-694
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• 2008

In this presentation, we study numerically an optimization problem of a fire fighting robot cooling system. The governing equation for the system is the unsteady heat equation with source term. We use a multigrid method for numerical solutions in three-dimensional space. We investigated the effects of various parameters and the results will be presented.

• Proceedings of the KIEE Conference
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• 1998.07b
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• pp.737-739
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• 1998

This presentation describes an experiment to intergrated control, protection and measurement system configulation at KOWACO's Yongdam hydro-power station currently constructed by discrete electronic and electromechenical devices. The experiment is designed to exploit existing microcomputer technologies, digital signal processors, m/w&fiber optic communications. The theory of operation and advantages of the intergrated approach are discussed.

• Proceedings of the KSR Conference
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• 1998.05a
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• pp.323-329
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• 1998

Fatigue strength database system was developed for Windows 95 on personal computer. The relational database management system Visual Foxpro 5.0 was used. The database system developed contains 3,147 S-N curves and 311 $\varepsilon$-N ones for 437 material symbols and has the ability to search data by material symbol that each specification marks differently. Visual Basic 5.0 was used for graphic presentation and statistical treatment of the data searched.

• International conference on construction engineering and project management
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• 2015.10a
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• pp.625-626
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• 2015

The purpose of this study is to present a cost classification system that can be used in gas plant construction projects. Towards this end, it examined the detailed statements of the construction companies which had experience in carrying out plant construction projects. Based on the above, it also presented a life-cycle (i.e., EPCC) cost classification system for the gas plant construction projects by conducting the Delphi analysis through the expert opinions.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.289-291
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• 1998

최근 멀티미디어 자료(Multimedia Data)들을 이용한 멀티미디어 상연물(Multimedia Presentation)의 제작에 많은 관심이 쏟아지고 있다. 한편, 멀티미디어 상연물들의 효과적인 사용을 위해서는 멀티미디어 상연물과 데이터베이스 시스템(Database System)의 통합(Integration)이 필요하며 이에 그래프 타입(Graph Type)을 이용하여 표현되고 있는 멀티미디어 상연물의 검색을 위한 검색 언어(Query Language)의 필요성이 대두되고 있다. 검색언어는 멀티미디어 자료들의 물리적 특징과 내용(Content), 상연물을 표현하는 데이터 타입(Data Type)을 표현할 수 있어야 한다. 또한 검색 언어는 사용자(end-user)가 손쉽게 사용할 수 있어야 한다. 이에 앞서 언급된 멀티미디어 상연물 검색 언어가 갖추어야할 요소들을 가지고 있으며 또한 사용자가 편리(user-friendly)하게 사용하는 visual language의 formal basis가 되는 calculus에 바탕을 둔 검색 언어인 GCaluculus/S를 소개한다.

• Journal of the Korean Professional Engineers Association
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• v.42 no.4
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• pp.51-54
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• 2009

The president of NSPE(2009-2010), Mr. Grossman had attended the The 3rd National Conference for Professional Engineers of Korea in accordance with the mutual agreement between KPEA and NSPE. He then, had a chance to present to our professional engineers about the licensure of professional engineers and engineering education of USA. The main contents of his presentation were introduction of the current situation of professional engineer system and needs to apply this licensure to the industry and education field, needs to strengthen the engineering education and needs to collaborate with Government in oder to open employment visa for foreign engineers. In the meantime, we should make use of this chance of engineer shortage in USA and let more Korean engineers work successfully in USA.

• Journal of information and communication convergence engineering
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• v.18 no.2
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• pp.132-146
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• 2020

Biometric technologies have become widely available in many different fields. However, biometric technologies using existing physical features such as fingerprints, facial features, irises, and veins must consider forgery and alterations targeting them through fraudulent physical characteristics such as fake fingerprints. Thus, a trend toward next-generation biometric technologies using behavioral biometrics of a living person, such as bio-signals and walking characteristics, has emerged. Accordingly, in this study, we developed a bio-signal authentication algorithm using electrocardiogram (ECG) signals, which are the most uniquely identifiable form of bio-signal available. When using ECG signals with our system, the personal identification and authentication accuracy are approximately 90% during a state of rest. When using fingerprints alone, the equal error rate (EER) is 0.243%; however, when fusing the scores of both the ECG signal and fingerprints, the EER decreases to 0.113% on average. In addition, as a function of detecting a presentation attack on a mobile phone, a method for rejecting a transaction when a fake fingerprint is applied was successfully implemented.

• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.741-744
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• 1998

In the area of the multimedia computer, the demand for the image processing engineer is large. However, there are not many engineers capable of developing practical systems. To teach practical image processing techniques, we need an intergrated education systems which can efficiently present the image processing theory and, at the same time, provide interactive experiments for the theory presented. In this paper, we propose an integrated education systems for the image processing. It consists of the theory presentation systems and the experiment systems. The theory presentation systems uspports multimedia display functions and HTML. It is tightly integrated with the experiment systems which developed based on the integrated image processing algorithm development system called Hello-vision.

• Proceedings of the Korean Society of Toxicology Conference
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• 2006.11a
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• pp.95-101
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• 2006

Compare to the toxicity tests using experimental animals, the GLP application and compliance in toxicity studies using cell culture systems may be less straightforward elucidated in the two documents published by the OECD Working Croup on GLP 'The Application of the GLP Principles to Short Term Studies (1999)' and 'The Application of the Principles of GLP to in vitro Studies (2004)' The object of this presentation is to show how to interpret the GLP principles and to apply with actual performances in a well known toxicity test using cell culture, chromosome aberration study. The presentation will cover test substance, test system (cell line), study environment management, documentation, quality assurance, and study protocol and report.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.199-201
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• 2002

사용자가 원하는 멀티미디어 콘텐츠를 원하는 시간에 TV를 통해서 볼 수 있게 된다면, 즉, 보고 싶을때 보고 싶은 방송을 포함한 멀티미디어 콘덴츠를 원하는 시간에 볼 수 있게 된다면 사용자는 방송시간에 맞추어 TV를 보지 않아도 되고 원하는 콘텐츠를 검색하느라 시간을 보낼 필요도 없어질 것이다. 이러한 서비스는 바로 디지털 콘텐츠와 이를 가정에서 저장할 수 있는 장치의 발달이 바탕이 되고 있다. 본 논문에서는 멀티미디어 콘텐츠에 대해서 이러한 서비스를 제공할 수 있도록 메타데이터 색인 기법 및 사용자가 원하는 장면 및 비디오를 브라우징 할 수 있는 시스템의 구현에 대해서 기술한다.