• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2000년도 춘계공동학술대회 논문집
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• pp.445-448
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• 2000

Researches about an evaluation system for military officers have been studied because it is one of the most important elements for managing units and improving combat power. This paper proposes an evaluation system that enhance justice of evaluation, accomplish a distintion among evaluating elements and improve synergy effects between higher level officers and lower level officers. The evaluation system in this study not only suggests evaluating items and methods but also determines the final evaluation ranking among the evaluated that have their own evaluation criteria, items and duties using the median rank method used in statistics.

• 한국광학회:학술대회논문집
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• 한국광학회 2005년도 제16회 정기총회 및 동계학술발표회
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• pp.160-161
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• 2005

A critical issue in implementing efficient Ethernet passive optical network(EPON) System is the bandwidth allocation algorithm. The overall goal of bandwidth allocation is to effectively and fairly perform scheduling of time slots between ONUs in EPON System. We propose a new algorithm of dynamic bandwidth allocation for improved bandwidth efficiency in EPON system.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.688-691
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• 1999

Recently, it is increased to adopt inverter system to household electrical appliances, especially in ai conditioner and refrigerator. Inverter system is adopted for improving the efficiency. But Inverter system makes acoustic noise caused by switching frequency. In household electrical appliace, it is important to reduce acoustic noise. And in some cases it is possible to magnify the acoustic noise caused by switching, by system which may have different transfer characteristic. In this paper, random PWM method was adopted in inverter refrigerator using 8 bit microprocesso. We found useful PWM frequency and adoptation method.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.130-133
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• 1999

It is one of the most effective methods for improving the performance of electric railway vehicles to make better the wheel-railway adhesion characteristics. The purpose of this paper is to develop the equivalent reduction machine to experiment on the adhesion system. The experiment system makes it possible to change the wheel-rail adhesion force with various adhesion parameters, and therewith to test the adhesion control system with the reduction machine in a laboratory.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.704-706
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• 2004

The objective of this article is to provide the approach of improving trade system for activating the generation using renewable energy. The power trade system of our country is mandatory market, in which power generators fundamentally are to play. In this paper, several suggestions for power trading system of renewable energy will be showed.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.562-565
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• 2000

For solving problems of manpower and improving working environment, Robot System have been introduced. In the past, Robot System was adopted mass production, indoor factory condition, but present Robot System is applied to many other fields. This applied field is Robot System was adopted fruit harvest, maintenance, and so on. The developed Multi-Linked Lifter is applied to eminant multi-purpose working. The purpose of this study is to develop control algorithm for this equipment composed of multi-linked manipulator.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2004년도 추계학술대회
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• pp.253-258
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• 2004

Domestic construction industry (including plant engineering industry) faces severe competition with world-wide leading companies under WTO (World Trade Organization) system. To survive in this competition, domestic construction company should establish and operate standardization system efficiently. In this paper, check list is presented to prepare the efficient reliability management system in domestic construction. And then, the check list is applied in MIR(Maturity Index on Reliability) estimation item to estimate reliability management level of company quantitatively.

• 시스템엔지니어링학술지
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• 제3권1호
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• pp.27-31
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• 2007

A complex system like ATM(Air Traffic Management) has safety problem emerging from complex interactions between systems. In complex systems, malfunctions of components are not the only causes of critical accidents. To resolve this problem many researchers have proposed new safety analysis models for complex systems. This research is a way of improving safety analysis model focusing on systems engineering design model for ATM.

• 대한안전경영과학회지
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• 제15권4호
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• pp.171-178
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• 2013

Workers are avoiding production/manufacturing sites due to the poor working environment and concern over safety. Small and medium-sized businesses introduce new equipment to secure safety in the production site or ensure effective process management by introducing the real-time monitoring technique for existing equipment. The importance of real-time monitoring of equipment and process in the production site can also be found in the ANSI/ISA-195 model. Note, however, that most production sites still use paper-based work slip as a process management technique. Data reliability may deteriorate because information on the present condition of the production site cannot be collected/analyzed properly due to manual data writing by the worker. This paper introduces the monitoring and process management technique based on a direct facility interface to secure safety in the field by improving the poor working environment and enhance there liability and real-time characteristics of the production data. Since the data is collected from equipment in real-time directly through the SIB-based interface and PLC-based interface, problems associated with workers' manual data input are expected to be solved; safety can also be improved by enhancing workers' attention to work by minimizing workers' injuries and disruption.

• 한국과학교육학회지
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• 제25권4호
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• pp.494-502
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• 2005

본 연구에서는 문헌 연구, 설문 조사, 교사 면담 등을 통하여 현행 과학과 수업평가(장학) 실태를 진단하고, 과학과 수업평가의 필요성과 그 개선 방안(지향점)을 고찰하였다. 먼저 과학교사들이 경험한 수업평가의 유형, 현행 수업평가 결과의 활용 사례, 교사들이 진단한 현행 수업평가의 문제점 등을 살펴보았다. 현장 교사들은 관리자 중심의 관료적인 수업평가, 보여주기위한 공개 수업용의 수업 평가, 수업이 교사의 개인적인 영역이라는 교사들의 인식, 교사평가에서 낮은 비중을 차지하는 수업평가, 평가자의 비전문성, 객관적이고 전문적인 평가들의 부재 등을 현행 수업평가의 문제점으로 지적하였다. 또한 본 연구에서는 형성평가로서의 과학과 수업평가의 필요성을 고찰하고, 바람직한 수업평가의 유형, 주체, 대상 등을 제안하였다. 앞으로 나아갈 길은 행정적 상부구조에서 시작되는 것이 아니라, 교사들 스스로 신뢰할만한 전문직으로서 자신들의 활동을 점검할 기초가 되는 교수활동 기준 개발 및 전문적 학습에 대한 책임을 지는 것이다.