• 한국산학기술학회논문지
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• 제14권10호
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• pp.4819-4829
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• 2013

이 연구는 학부모의 에너지절약 인식 및 행동이 유아의 친환경태도와 환경보전지식에 미치는 영향을 알아보는데 목적이 있다. 이를 위하여 2013년 6월 10일부터 30일까지 충남 N시의 농어촌형 어린이집에 다니는 유아와 부모 160명을 대상으로 설문조사를 실시하였다. 분석결과 첫째, 학부모의 에너지절약 인식이 유아의 친환경태도에 미치는 영향은 학부모의 환경보전의식, 에너지 전략의식이 유아의 친환경태도에 영향을 미쳤다. 둘째, 학부모의 에너지절약 행동이 유아의 친환경태도에 미치는 영향은 학부모의 일반행동, 선택행동이 유아의 친환경태도에 영향을 미쳤다. 셋째, 학부모의 에너지절약 인식이 유아의 환경보전지식에 미치는 영향은 학부모의 환경보전지식, 에너지 전략의식이 유아의 환경보전지식에 영향을 미쳤다. 넷째, 학부모의 에너지절약 행동이 유아의 환경보전지식에 미치는 영향은 학부모의 일반행동, 선택행동이 유아의 환경보전지식에 영향을 미쳤다. 이상의 연구결과 학부모의 에너지절약 인식과 행동은 유아의 친환경태도와 환경보전지식에 긍정적인 정(+)의 영향을 받는 것으로 나타났다. 이는 유아의 친환경태도와 환경보전지식을 긍정적으로 높이기 위해 학부모의 바른 에너지절약인식과 행동의 중요함을 시사해 준 것이라 할 수 있다.

• 가정과삶의질연구
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• 제5권2호
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• pp.29-44
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• 1987

The objectives of this study were; (1)to determine if socio-demographic variables influence energy conservation attitude, energy conservation knowledge, energy conservation behavior of consumer, (2) to determine if energy conservation attitude and energy conservation knowledge influence energy conservation behavior of consumer, (3) to examine the causal relationships among variables which influence energy conservation behavior of consumer. The model for this study included following variables; (1) socio-demographic variables, which are the independent variables; (2) energy conservation behavior of consumer, which is a dependent variable; (3) energy conservation attitude of consumer, which is an intervening variable ;(4) energy conservation knowledge of consumer, which is an intervening variable. The data used in this study included 502 homemakers living in Seoul. Statistics used for data analysis were ANOVA, Pearson's Correlation and Path Analysis. The major findings were follows; (1) Energy conservation attitude and energy conservation behavior difference significantly according to the level of family income among socio-demographic variables such a age, educational level and family income. Energy conservation knowledge differenced significantly educational level, and family income. Energy conservation knowledge difference significantly educational level. (2) Energy conservation behavior differed significantly according to energy conservation attitude and energy conservation knowledge. (3) Energy conservation attitude and energy conservation knowledge had positive effects on energy conservation behavior directly and indirectly. (4) Family income had negative effects on energy conservation behavior directly and indirectly through energy conservation attitude. Education had positive effect on energy conservation behavior indirectly through energy conservation knowledge.

• 가정과삶의질연구
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• 제8권2호
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• pp.119-134
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• 1990

The purpose of this study were to investigate; The contact of housewives with governmental public advertisement about the energy conservation, general tendency about the energy conservation consciousness and behavior. For these purposed, a survey was conducted using questionnaires. Data analysis were conducted from 367 housewives with children in Seoul. Used statistical method were Frequency Distribution, percentile, Mean, one Way Anova, t-test, F-test, Pearson's Correlation, Multiple regression Analysis and Path Analysis. Major findings are as follows. 1) Level of public advertisement contact was low. In contrast to , level of energy conservation consciousness, consciousness change, and behavior was adequately high. 2) Statistically significant difference were found in advertisement contact according to the husband's age , Energy conservation consciousness change according to husband's occupation, and energy conservation behavior according to family life cycle. 3) Energy conservation consciousness changes were increased by advertisement contact. Energy conservation behaviors were increased by conservation consciousness and the degree of conservation consciousness change. 4) Governmental public advertisement about the energy conservation has both direct and indirect effect on the energy conservation behavior. From these finds, the following suggestions are made. Governmental effort about the energy conservation advertisement is needed to be activated. And the implications for the future study was need to incorporate the psychological variables in energy conservation study.

• 대한전기학회논문지
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• 제45권3호
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• pp.415-425
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• 1996

This study presents an analytical method of solving the behaviors of arc plasma in a nozzle constricting transferred-type torch and purposes to obtain the basic data for the design of a plasma torch, which can be obtained from the temperature, pressure, velocities and voltage distributions. We have to solve some conservation equations simultaneously and need to know the exact thermal gas properties in order to obtain the correct behaviors of arc plasma. It is also necessary to give the relevant physical or geometric boundary conditions. For the simplicity of analysis, we assumed that (a) the plasma flow is laminar, (b)the local thermodynamic equilibrium, i.e. LTE, prevails over the entire arc column region. The electrode sheath effects were neglected and the nozzle area was excluded from the analysis by assuming that the current flow into the nozzle is zero. We solved the momentum transfer equation including the self-magnetic pinch effect, and obtained the temperature distribution from the energy conservation equation. From this temperature, we could get arc voltage distribution. (author). refs., figs., tabs.

• 한국전산유체공학회지
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• 제21권3호
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• pp.8-14
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• 2016

A numerical analysis is conducted to estimate the core expansion and the energy behaviors induced by a core disruptive accident in a sodium-cooled fast reactor. The numerical formulation based on underwater explosion theory is carried out to simulate the core explosion inside the reactor vessel. The transient pressure, temperature and expansion of the core are examined by solving the equation of state and nonlinear governing equation of momentum conservation in one-dimensional spherical coordinates. The energy balance inside the computation domain is examined during the core expansion process. Heat transfer between the core and the sodium coolant, and the bubble rise during the expansion process are briefly investigated.

• 한국철도학회논문집
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• 제6권3호
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• pp.174-178
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• 2003

This paper presents the development of 2-dimensional discrete element algorithm to generate circle and line elements for the simulation of the ballast and sleeper in railway. An example of randomly distributed circle elements show a good applicability of this algorithm for the modeling of the behaviors of ballast. The output about unbalaned force, particle velocity, and total energy conservation from the code is evaluated to check if the calculation is conducted properly.

• Asian Pacific Journal of Cancer Prevention
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• 제17권10호
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• pp.4783-4790
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• 2016

Purpose: Cancer-related fatigue is frequently experienced by patients during and after therapy. The present study was conducted to assess the impact of energy conservation strategies and health promotion in breast cancer survivors. Methods: A randomized controlled trial was carried out to compare the intervention effect (n=69.0) with controls (n=66.0) based on routine oncology ward care. The intervention was five weekly sessions for groups of 6-8 breast cancer survivors. Data on fatigue and health promotion lifestyle were obtained before and after completion the intervention and then 8 weeks later for analysis of variance (ANOVA) with repeated measures. Results: Our findings showed cancer-related fatigue to be reduced in the intervention group from pre- to post-intervention, and this persisted over the 8-weeks follow-up period (F = 69.8, p<0.001). All subscales of the cancer fatigue scale demonstrated statistically significant effects with partial eta-squared values ranging from 0.15 (the smallest effect in cognitive fatigue) to 0.21 (the largest for affective fatigue). Changes in the health promotion life style indicated a significant promotion from pre- to post-intervention, and this again continued after 8-weeks follow-up (F = 41.6, p < 0.001). All six domains of a health promoting life style featured significantly elevated values, the largest effect being seen in the interpersonal relations subscale (F=57.7, partial ${\eta}^2=0.21$, p<0.001) followed by physical activity (F=51.9, partial ${\eta}^2=0.18$, p<0.001). Conclusions: The program was effective in decreasing cancer related fatigue and promoting a healthy lifestyle.

• 에너지공학
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• 제26권2호
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• pp.93-98
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• 2017

본고에서는 게임화 전략은 2010년 하반기부터 광범위하게 사용되기 시작하여 다양한 산업과 응용분야에서 활용이 증가하는 추세로, 에너지절약분야에서도 에너지절감 및 에너지절약 행동의 변화를 위해 적극 활용되고 있다. 에너지절약분야 게임화 적용사례는 게임속성을 반영하고 있어서 일반시민들이 재미있고 즐겁게 에너지절약에 참여할 수 있도록 설계된 특징이 있으며, 에너지사용량의 절감 및 에너지절약에 대한 인식을 변화시킬 수 있는 것으로 평가된다. 향후 에너지절약 프로그램의 게임화 적용은 에너지절약 신서비스 요구에 대한 충족이 가능하도록, 에너지절약 프로그램에 대한 적용대상 및 목표 설정을 위한 게임화 실행계획의 수립이 요청된다.

• 에너지공학
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• 제25권4호
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• pp.236-244
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• 2016

본고에서는 에너지절약 홍보활동 성과에 대한 평가지표 설정은 Lasswell(1948), 노영우(2012)의 사례를 토대로, 먼저 홍보기관의 지표는 평판도, 인지도, 호감도, 신뢰도, 소통여부 등으로 구성되었다. 홍보내용은 첫째, 홍보내용에 대한 인식 평가지표로 홍보활동 내용의 인지도, 접촉도, 필요성, 홍보내용의 공감도, 절약의 영향력 등 8개 문항이며, 둘째는 홍보내용에 대한 평가지표로 홍보활동 내용의 만족도와 기여도 문항으로 구성되어 있다. 홍보매체에 대한 평가지표는 접촉하는 주요 홍보매체에 대한 식별, 접촉 매체의 신뢰도와 효과성, 그리고 에너지소비자가 홍보를 직접적으로 할 경우 가장 선호하는 홍보매체에 대한 식별 등이 평가항목으로 구성되어 있다. 홍보효과에 대한 평가지표는 실천도, 실행 강도, 그리고 실천이유와 실천하지 않는 이유 등이 평가항목으로 포함되어 있다.

• Nuclear Engineering and Technology
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• 제53권2호
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• pp.455-465
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• 2021

The Molten Salt Reactor (MSR), one of the six advanced reactor types of the 4th generation nuclear energy systems, has many impressive features including economic advantages, inherent safety and nuclear non-proliferation. This paper introduces a system analysis code named TREND, which is developed and used for the steady and transient simulation of MSRs. The TREND code calculates the distributions of pressure, velocity and temperature of single-phase flows by solving the conservation equations of mass, momentum and energy, along with a fluid state equation. Heat structures coupled with the fluid dynamics model is sufficient to meet the demands of modeling MSR system-level thermal-hydraulics. The core power is based on the point reactor neutron kinetics model calculated by the typical Runge-Kutta method. An incremental PID controller is inserted to adjust the operation behaviors. The verification and validation of the TREND code have been carried out in two aspects: detailed code-to-code comparison with established thermal-hydraulic system codes such as RELAP5, and validation with the experimental data from MSRE and the CIET facility (the University of California, Berkeley's Compact Integral Effects Test facility).The results indicate that TREND can be used in analyzing the transient behaviors of MSRs and will be improved by validating with more experimental results with the support of SINAP.