• Journal of Electrical Engineering and Technology
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• 제8권4호
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• pp.930-937
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• 2013

In this paper, a motor control algorithm for performing a mode change without an integrated starter generator (ISG) is suggested for the automatic transmission-based hybrid electric vehicle (HEV). Dynamic models of the HEV powertrains such as engine, motor, and mode clutch are derived for the transient state during the mode change, and the HEV performance simulator is developed. Using the HEV performance bench tester, the characteristics of the mode clutch torque are measured and the motor torque required for the mode clutch synchronization is determined. Based on the dynamic models and the mode clutch torque, a motor torque control algorithm is presented for mode changes, and motor control without the ISG is investigated and compared with the existing ISG control.

• 설비공학논문집
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• 제29권2호
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• pp.63-67
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• 2017

The purpose of this study is to analyze the Age of Air and the Local Air-change Effectiveness of by field measurement. The indexes of Age of Air and Local Air-change Effectiveness are used to analyze the local ventilation effectiveness of multiple locations and are mainly evaluated using the computational fluid dynamics (CFD) method. In this study, measurement of the Local Air-change Effectiveness was based on ASHRAE 129. The performance of Local Air-change Effectiveness and the dependence of the outlet location on Local Air-change Effectiveness were analyzed. The results showed that a greater air-change rate (ACH) may not guarantee better local ventilation effectiveness.

• 대한수학회논문집
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• 제21권1호
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• pp.75-88
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• 2006

Wiener measure and Wiener measurability behave badly under the change of scale transformation. We express the analytic Feynman integral over $C_0(B)$ as a limit of Wiener integrals over $C_0(B)$ and establish change of scale formulas for Wiener integrals over $C_0(B)$ for some functionals.

• 수산해양교육연구
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• 제22권1호
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• pp.25-37
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• 2010

This study was attempted to analyze the change process of fisheries track's high school curriculum related with the 5th-7th revised national curriculum. To accomplish this goal, the nature and goals of fisheries track's high school were reviewed. First, it was found that the fisheries track's high school was classified into three groups; high school for special goal, characterization, and industry. And the goal of fisheries track's high school was designated to harmonize the general education and vocational education in high school goal. Second, the legal basis and system of national curriculum in fisheries track's high school were discussed. The legal basis of national curriculum in fisheries track's high school was prescribed to the 'Elementary and Secondary Education Act'. The system of national curriculum was composed the general guideline and subjects. Third, the change process of fisheries track's high school national curriculum was discussed. The system of decision, general guideline, and subjects in fisheries track's high school national curriculum were seemingly to be studied on the basis of the autonomy or diversity. In conclusion, the concrete content of fisheries track's high school national curriculum was not changed compared to the 5th-7th revised curriculum.

• Ocean and Polar Research
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• 제23권2호
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• pp.141-160
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• 2001

The challenge of predicting the Japanese coastal ocean motivated Frontier Observational Research System for Global Change (FORSGC) and the Japan Marine Science and Technology Center (JAMSTEC) to start a multiyear observational programme in the upstream Kuroshio in November 2000. This field effort, the Kuroshio Observation Program (KOP), should enable us to determine the barotropic and baroclinic components of the western boundary current system, thus, to better understand interactions of the currents with mesoscale eddies, the Kuroshio instabilities, and path bimodality. We, then, will be able to improve modeling predictability of the mesoscale, seasonal, and inter-annual processes in the midstream Kuroshio near the Japanese main islands by using this knowledge. The KOP is focused on an enhanced regional coverage of the sea surface height variability and the baroclinic structure of the mainstream Kuroshio in the East China Sea, the Ryukyu Current east of the Ryukyu's, and the Kuroshio recirculation. An attractive approach of the KOP is a development of a new data acquisition system via acoustic telemetry of the observational data. The monitoring system will provide observations for assimilation into extensive numerical models of the ocean circulation, targeting the real-time monitoring of the Japanese coastal waters.

• 한국건축시공학회지
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• 제21권3호
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• pp.213-219
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• 2021

미군 공사는 국내 공사와 설계기준과 수행절차 등이 상이하기때문에 설계변경의 원인과 영향도 등도 다른 양상을 보인다. 본 연구는 100억 이상 규모 총 24건의 미군공사에서 발생한 721건의 설계변경 자료와 164명의 미군공사참여자 설문을 바탕으로 미군공사의 설계변경 원인과 그 영향도를 분석하였다. 미군공사에서 중요한 설계변경 요인은 설계 오류에 의한 설계 관련 변경(348건, 48.3%), 발주자 요구(86건, 11.9%), 상이한 현장 상태(69건, 9.6%)로 밝혀졌다. 또한, 설계변경으로 인해 평균 6.56%의 공사비 증가와 계약공기 대비 21.1%의 공기연장이 발생하였다. 본 연구의 결과로 국내 건설사에는 군 시설의 접근성 및 제한성으로 인해 부족할 수 있는 미군공사의 설계변경 및 공사성과의 전반적 이해도를 향상을 기대한다. 이를 바탕으로 향후 미군시설공사의 발전적 방향을 제시할 수 있는 후속 연구를 제안한다.

• 한국가정과교육학회지
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• 제34권3호
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• pp.67-83
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• 2022

본 연구는 중학교 가정과 의생활영역의 지속가능발전교육(ESD)을 통해 청소년이 주변의 문제를 발견하고 공동체를 위해 해결방법을 고민하며 실천하는 사람으로서의 자질을 함양할 수 있는지 프로그램을 개발하고 그 효과를 분석하는 데 목적이 있다. 연구방법은 ADDIE의 교수설계 모형에 따라 진행하였다. 이를 위해 중학교 가정 교과서 의생활영역 학습활동을 분석하였고, 분석 결과를 바탕으로 체인지메이커 교육프로그램 단계에 따른 지속가능발전교육 프로그램을 개발한 후 그 효과를 평가하였다. 먼저 아쇼카 재단이 제시한 Change-maker 교육프로그램의 단계에 따라 중학교 가정 교과서의 학습활동을 분석하였고 분석결과를 바탕으로 10개의 교수·학습과정계획서, 17개의 개별 학습 활동지 7개의 모둠 학습 활동지 등 '우리를 위한 옷, 지구를 위한 행동'이라는 제목의 지속가능한 의생활교육 프로그램을 개발하였다. 개발된 프로그램은 울산의 K 중학교 1학년 학생 285명을 대상으로 수업에 적용되었다. 개발된 프로그램을 수업에 적용한 결과 연구대상자의 체인지메이커 자질 수준이 수업 전 평균 3.87(SD=.54)에서 수업 후 평균 4.59(SD=.64)로 증가하였으며, 수업 참여 학생들의 성찰일지에서도 사회문제 해결의 가치와 지속가능발전(SD)을 위한 행동 변화의 필요성을 깨닫는데 영향을 준 것으로 나타났다. 따라서 Change-maker 교육 프로그램 단계를 기반으로 개발된 중학교 가정과 의생활영역 지속가능발전교육 프로그램은 청소년의 Change-maker 자질 함양에 효과적인 것으로 확인되었다.

• 한국학교보건학회지
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• 제12권1호
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• pp.27-44
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• 1999

Obesity in children is a major concern of public health. This study was performed to illuminate its effect on weight control program and the associated factors of obesity-related habits and obesity index in primary school obese children. Weight control program consisted of behavioral modification, nutrition education and exercise during 17 weeks. The sample consisted of treatment group(n=42) and control group(n=41). There was no statistical difference between the two groups in obesity index, socioeconomic status and grade. To assess the effects of weight control program, the subjects were given pre-test and post-test such as the measurement of anthropometric values and self-reporting questionnaire. This result of this study were as follows; 1. After weight control program was applied, there was a significant decrease in obesity index among the treatment group. Obesity-related habits score of the treatment group increased significantly, While there was not much difference between the pre-test and the post-test among the control group. But exercise habit didn't increase significantly in the both groups. 2. Correlation between obesity-related habits and obesity index were not evident. 3. After application of weight control program, the factors associated with change of eating habit were children's past experience of weight control, motivational change toward weight control program and friends' support for treatment group. The factors associated with change of exercise habit were post-test motivation score and friends' support. Motivational change toward weight control and pre-test self-efficacy of exercise behavior were counter-related to exercise habit. For change of other obesity-related habits, initial obesity index, motivational change, post-test self-efficacy score of exercise behavior and paternal educational status were closely associated. But post-test self-efficacy score of eating behavior was unrelated. 4. Only the factor of experience of weight control was associated with change of obesity index. 5. For the both groups, the factors associated with change of eating habits were post-test self-efficacy of eating behavior and family's support. The factors associated with change of exercise behavior were self-efficacy changes of exercise behavior and friends' support. The factors associated with change of other obesity-related habits were self-efficacy change of eating behavior. Initial obesity index was associated with change of obesity index. 6. The rate of dropouts from weight control program was 28.6% (12/42) in treatment group. Initial obesity index, other obesity-related habits except eating exercise habits, friend's support were associated with dropout. In conclusion, these results indicated that weight control program in primary school settings was effective. Direct exercise regimen and practice was demanded. In addition to the program itself, much of the success is dependent on the degree of motivation of the children involved and support provided by their parents and friends. Further study need to be performed under the condition that the weight control progrom is applied for a longer period.

• Nutrition Research and Practice
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• 제6권2호
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• pp.169-174
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• 2012

The hand hygiene behavior of 400 middle school students (grades 1-3) in Seoul and Gyeonggi-Do was studied to determine how stages of change were affected by food safety education, focusing on hand hygiene and general food safety. Subjects were 51.3% male and 44.3% of study subjects were first graders of middle school. Approximately 40% of subjects were at the stage of action, 42.7% were at the stage of contemplation, and 16.4% were at pre-contemplation. The most important factor that influenced proper hand washing was self efficacy ($P$ < 0.001). Proper hand washing was also correlated significantly with positive belief ($P$ < 0.01) and stages of change ($P$ < 0.01). After food safety education by high-school mentors, middle-school students who were in the stages of pre-contemplation (11.1%) and contemplation (88.9%) showed significant progression toward the action stage ($P$ < 0.001). Proper hand washing ($P$ < 0.01) and food safety knowledge ($P$ < 0.05) were also significantly increased after educational intervention.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2004년도 전력전자학술대회 논문집(1)
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• pp.38-41
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• 2004

Artificial intelligence control that use Fuzzy, Neural network, genetic algorithm etc. in the speed control of induction motor recently is studied much. Also, sensors such as Encoder and Resolver are used to receive the speed of induction motor and information of position. However, this control method or sensor use receives much effects in surroundings environment change and react sensitively to parameter change of electric motor and control Performance drops. Presume the speed and position of induction motor by ANN in this treatise, and because using FMRLC that is consisted of two Fuzzy Logic, can correct Fuzzy Rule Base through teaming and save good response special quality in change of condition such as change of parameter.