• Journal of Practical Engineering Education
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• v.8 no.2
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• pp.103-109
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• 2016

In order to get the maintenance work for the normal operation of rail vehicles made safe maintenance training, which looked suffered direct physical train maintenance environment, gain experience to get out foster the practical skills, but experience the real maintenance in operational problems the maintenance procedures followed are difficult to be. So it can gain experience and knowledge of the actual maintenance work in safe conditions if you apply a simulation experience in a similar environment as possible to the actual train maintenance training can also reduce operational training costs. For a description of the current domestic and simulation programs of the railway sector it has been operating in overseas and is designed to train intensive training, maintenance and maintenance-related information is scarce situation. In this study, the contents of the theory of educational technology for effective training of train maintenance elements exhibit theory, theory of learning situations, designed to train maintenance training simulation through a previous study that investigated the problem-based learning theory.

• Journal of the Korea Society of Computer and Information
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• v.14 no.11
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• pp.159-167
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• 2009

The vehicles play a significant role in modern people's life as economy grows. The development of car navigation system(CNS) provides various convenience because it shows the driver where they are and how to get to the destination from the point of source. However, the existing map-based CNS does not consider any environments such as traffic congestion. Given the same starting point and destination, the system always provides the same route and the required time. This paper proposes a path planning method with traffic prediction by applying historical driving information to the Fuzzy theory and Bayesian update. Fuzzy theory classifies the historical driving information into groups of leaving time and speed rate, and the traffic condition of each time zone is calculated by Bayesian update. An ellipse area including starting and destination points is restricted in order to reduce the calculation time. The accuracy and practicality of the proposed scheme are verified by several experiments and comparisons with real navigation.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.4
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• pp.581-587
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• 2011

A wireless sensor network needs to consist of multi-sensors in order to infer a high level of information on circumstances. Data fusion, in turn, is required to utilize the data collected from multi-sensors for the inference of information on circumstances. The current paper, based on Dempster-Shafter's evidence theory, proposes data fusion in a wireless sensor network with different weights assigned to different sensors. The frequency of events per sensor is the crucial element in calculating different weights of the data of circumstances that each sensor collects. Data fusion utilizing these different weights turns out to show remarkable difference in reliability, which makes it much easier to infer information on circumstances.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.5
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• pp.2072-2078
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• 2012

Along with the rapid change environment, many organizations have come to consider a method of job analysis for better human resource management. Researchers and practitioners recognize that it is necessary to develop a new method of job analysis, however, there are not enough empirical studies. This research aims to clarify what kind of job analysis methods are proper to develop human resources ultimately. Its specific purpose are the following. First, to study representative job analysis methods theoretically. Second, to develop methods by its goal and practical use. Third, to show a empirical study in the real development case. This paper make contribution to develop a integrated job analysis method by contingent approach.

• Communications of Mathematical Education
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• v.9
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• pp.227-239
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• 1999

영재교육의 이론적 근거를 제시한 연구물이 국내에는 그다지 많지 않다. 뿐만 아니라 지금 한국과학재단에서 지원하고 있는 전국의 9개 대학 과학영재교육센터 역시 실천적인 차원의 활동을 벗어나지 못하고 있다. 외국의 대학부설 연구소들이 30년 이상 이와 같은 연구와 서비스를 지속적으로 실천해오고 있는 사례들을 우리는 쉽게 찾을 수 있다는 점을 거울 삼아 모처럼 마련된 국가적 차원의 지원을 토대로 그 바람직한 실천과 연구를 위한 방안을 다음과 같이 제시해본다. 첫째, 질적 연구의 집적에 힘써야 한다. 영재교육이라는 특수한 상황을 전제로 할 때는 더구나 그렇듯이 일반화를 전제로 한 양적 연구보다는, 사례연구와 같은 질적 연구물들의 집적에 노력을 아끼지 말아야할 것이다. 둘째, 교수-학습 활동은 활동이론과 구성주의 이론의 적절한 조화가 요망된다. 구성주의 이론에 입각한 교수-학습 활동의 모습을 단적으로 말하자면, 학습자 자신이 주어진 문제 상황에서의 탐구를 통하여, ‘구체적인 것에서 추상적인 것으로’ 나아가 스스로 지식을 구성하는 것이다. 그러나, 활동이론에 입각한 교수-학습 활동의 요지는 활동은 정말로 전형적인 활동에 국한하고 나머지는 교사의 설명에 의해 학습자들이 ‘추상적인 것에서 구체적인 것으로의 소급’이 가능하도록 하는 것이다. 완전히 정반대의 주장을 하는 것 같으면서도 일면 그 타당성들을 갖고 있는 것으로 볼 수 있다. 셋째, 학제적 ${\cdot}$ 통합적 연구가 절실하다. 연구의 측면에서 수학반 아동과 과학반 아동들의 활동상의 차이점이나 유사점 등에 대한 질적 연구를 시도해보는 것은 매우 의미있는 일이 될 것이다.

• Korean Journal of Logic
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• v.9 no.1
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• pp.63-95
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• 2006

노직은 뉴컴의 문제를 뉴컴이 묘사한 상황에서 합리적인 행위를 선택함에 있어 지배의 원리와 기대 효용 극대화의 원리의 적용의 결과가 충돌한다는 것으로 설명하고 있다. 슐레징거와 이병욱은 지배의 원리에 의한 선택이 합당함을 논증하고 있다. 그들의 논증은 원래의 뉴컴 상황과 변형된 뉴컴 상황의 유비에 근거하고 있다. 이 글에서는 그러한 유비가 성립하지 않거나 성립할 경우 뉴컴 문제를 해결하는 데 흡족하지 않음을 보이려 하고 있다. 그리고 뉴컴 상황에서 지배의 원리를 사용해야 하는 독자적인 이유를 제시하고 있다.

• Journal of the Korean School Mathematics Society
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• v.23 no.1
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• pp.1-23
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• 2020

The purpose of this study is to theorize the conceptualizations of educational interest focused on mathematics learning and to investigate the directions of increasing students' interest in mathematics. This study reconsiders the interest theory of Dewey, classification of situational interest and individual interest, and the experimental research of mathematical interest. The conceptions of educational interest on mathematics learning are as follows. First, mathematical interest refers to the total experiences that an individual feels the need to engage in mathematical objects. Second, making a distinction between situational interest and individual interest is effective in suggesting educational interventions in order to improve students' learning interest. Third, interest is characterized by affect, cognition, and value. According to the conceptions of educational interest on mathematics learning, this study suggests that we should develop or construct good mathematics tasks to increase students' interest in mathematics. Good mathematics tasks consider both students' understanding and students' affection and provide activity's goals or values to be noticed by students.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.439-446
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• 2016

This research examines the effect of outside director system which has been legislated after financial crisis in Korea. Outside director system is based on agency theory which assumes that a manager is selfish and opportunistic in situation where ownership and management of a firm is separated. In this situation, outside director system has an important function to monitor and keep in check a manager. Thus, we examined that outside director system works as a monitoring mechanism in Korea. And we tested that above effect is weakened in family CEO firms where it is different from assumption of agency theory in Korea. According to empirical result with 282 sample firm, it is confirmed that outside director system reduces agency cost. In family CEO firms, however, this agency cost-reducing effect becomes weak. This result suggests that outside director system needs be cautiously managed without focusing on only monitoring function.

• The Journal of the Acoustical Society of Korea
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• v.14 no.1E
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• pp.88-97
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• 1995

The main purpose of this paper is to show the realizaability of the proposed highly effective direction finiding method which performs extremely well under the circumstances like low signal-to-noise ratio (S/N), very closely located signal sources, and so on. In order to achieve the purpose, the degree to which the proposed method is superior to the MUSIC(multiple signal classification) with respect to the S/N is discussed, and the result is analyzed in terms of the S/N and the number of sample data.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10b
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• pp.1009-1012
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• 2000

본 논문은 현재 개발되고 있는 원격 중환자 관찰 시스템의 부 시스템인 호출 시스템의 호출 매체 결정 알고리즘에 대하여 기술한다. 이 호출 시스템은 중환자실에 입원중인 환자의 상태 변화에 따라 담당 의사나 환자 보호자를 신속하게 연락하는 역할을 담당한다. 전달되는 메시지는 연락 시점과 연락의 긴급성에 따라서 유선전화, 무선전화, 호출기, 전자우편, fax 등의 통신 매체를 한 개 또는 두 개 이상 이용하여 전달된다. 이러한 메시지의 효율적인 전달을 위하여 본 연구에서는 불확실성 추론 방법인 Dempster-Shafer 이론을 이용하여 주어진 상황에서 가장 효과적인 전달 매체를 선택하는 알고리즘을 개발하였다. Dempster-Shafer 이론을 사용함으로서, 불확실한 상황에서 효율적이고 합리적으로 메시지 전달 매체를 결정할 수 있다.