• 대한지구과학교육학회지
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• 제7권1호
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• pp.43-53
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• 2014

이 연구의 목적은 계절의 변화 원인을 설명하는 과정에서 초등학생들의 개념 시뮬레이션을 분석함으로써 학생들이 어떻게 계절의 변화 원인에 대한 설명을 어떻게 생성하고 있는지를 알아보고, 계절의 변화와 관련된 교육에 시사점을 주는 데 있다. 이를 위해 문헌 연구를 기반으로 개념 시뮬레이션 과정 및 전략 분석틀을 개발하였으며, 과학교육 전문가 4인의 내용타당도를 확인 받았다. 연구의 결과는 다음과 같다. 첫째, 계절의 변화 원인 설명 과정에서 초등학생들은 주로 과학수업에서 모형 실험을 통해 학습한 지각적 경험을 이용하여 설명을 만들고 있었으며, 친숙한 대상을 이용하여 사고실험 사례를 고안하거나, 친숙한 지각적 경험을 유추하여 설명을 확고히 하는 것을 돕고 있었다. 둘째, 개념 시뮬레이션 사례의 실수는 초기표상의 진술, 심상 시뮬레이션의 실행 과정에서 나타났으며, 참여자들의 초기표상 진술이 불완전하거나, 심상 시뮬레이션 실행에서 부적절한 상황을 떠올린 경우였다. 셋째, 초등학생들의 개념 시뮬레이션 과정에서 남중고도의 개념과 관련된 정신모델을 확고히 하기 위해 제거, 대체의 시뮬레이션 전략을 사용하는 것을 확인하였다.

• 대한인간공학회지
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• 제36권5호
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• pp.459-466
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• 2017

Objective: This study examined two traffic signals with a countdown indicator in terms of driver's reaction time and subjective satisfaction score and their performance was compared with a standard traffic signal in driving simulation. Background: Dilemma zone is created when a traffic light changes at intersections. It often pushes drivers to rush in urgent and premature decision making whether to go or stop and thus induces unnecessary mental load among drivers, which may lead to sudden conflicts with following vehicles at intersections. Method: Forty college students (male: 20, female: 20) participated in this driving simulation study. Three traffic signals were employed: (1) standard traffic signal; (2) countdown-separated signal; and (3) countdown-overlaid signal. The countdown-separated and countdown-overlaid signals were designed to inform drivers of the remaining time of a green light before tuning to an amber light. Reaction times (sec) and satisfaction scores (7-point scale) for the two signals with a countdown indicator were compared with those for the standard traffic signal. Results: Reaction times of the countdown-separated (0.49 sec) and countdown-overlaid (0.43 sec) signals were significantly shorter than that of the standard signal (0.67 sec). Satisfaction scores of the countdown-separated (5.3 point) and countdown-overlaid (5.6 point) signals were greater than that of the standard signal (3.8 point). Lastly, the countdown-overlaid signal showed better performance than the countdown-separated signal, but their differences in reaction time (0.06 sec) and satisfaction score (0.3 point) were small. Conclusion: Traffic signals with a countdown indicator can improve drivers' reaction time and satisfaction score than the standard traffic signal. Application: Traffic signals with a countdown indicator will be useful for reducing the length of dilemma zone at intersections, by allowing drivers to predict the remaining time of a green light.

• 한국콘텐츠학회논문지
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• 제13권6호
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• pp.9-19
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• 2013

본 논문에서는 가상 상황속의 사건들에 역사적 맥락을 부여하기 위한 통합적 직관적 정보표현구조로서 시공간 그래프(Spatio-Temporal Graph)를 설계하고 구현하였다. 일반적으로 사건은 공간뿐 아니라 시간을 점유함으로써 역사적 사실이 된다. 따라서 가상 상황을 시뮬레이션하기 위해서는 공간적 측면을 표현하기 위한 삼차원 정보구조에 시간적 측면을 더한 다차원적인 맥락에 사건들을 위치시키는 일이 핵심적 기초가 된다. 이러한 다차원적 맥락은 온톨로지 뷰, 인스턴스 뷰, 시공간 뷰, 실제 뷰 등과 같은 여러 수준에서의 통합적 직관적 지식표현수단들을 통해 구현된다. 이와 같이 구현된 시공간 그래프에 기반한 시뮬레이션 시스템에 예제 시나리오를 적용하여 실용성을 검증한다. 본 기술은 지능형 교육시스템이나 차세대 시뮬레이션 게임 등에 필수적인 다양한 상황들을 제공하는 시뮬레이션 시스템의 중심요소가 된다.

• 한국심리학회지 : 문화 및 사회문제
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• 제8권2호
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• pp.171-190
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• 2002

이미 일어난 사실과 다른 가상의 상황을 상상해 보는 "만약 ...다면, ...했을 텐데"와 같은 사고과정을 사후가정사고라 하며, 이러한 사고가 흔히 '후회'와 같은 부정적 감정의 경험을 수반하고 심리적 부적응과 관련 있는 것으로 밝혀졌다. 본 논문은 이러한 사후가정사고와 후회경험의 긍정적 측면, 즉 인간의 동기에 부합하거나 또는 목적을 달성하는데 도움이 되는 기능적 역할을 지지하는 연구들을 통합하여 그 응용적 가치를 논의하였다. 사회심리학자들은 사후가정사고에서 가상상황이 현실의 사실보다 나을 때와 못할 때에 따라 각각 상향적과 하향적 사후가정사고로 분류하였으며, 또한 그 구조에 따라 첨가형과 삭제형 사후가정사고로 분류하였다. 상향적 사후가정사고는 후회, 실망과 같은 부정적 감정을 동반하며 하향적 사후가정사고는 안도, 기쁨과 같은 긍정적 감정을 동반한다. 사후가정사고의 기능적 가치를 제안하는 일련의 연구를 통해, 사회심리학자들은 하향적 사후가정사고는 정서적 기능(부정적 감정의 완화와 긍정적 감정의 증대)을 상향적 사후가정사고는 미래준비기능을 수행하는 것으로 밝혀졌다. 더 나아가, 조절적 동기에 관련된 일련의 연구들에서 상향적 사후가정사고는 향상적 동기와 하향적 사후가정사고는 예방적 동기와 깊은 관련이 있는 것으로 밝혀졌다. 이러한 결과들은 사후가정사고와 후회의 경험이 반드시 통제해야만 하는 부정적인 경험이 아닌 미래의 성공을 위한 준비적 기능으로 이해될 수 있다는 것을 제안한다. 이러한 사후 가정사고의 다양한 현실사회에서의 응용 가치와 그 제한점들을 논의하였다.

• 한국콘텐츠학회논문지
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• 제14권2호
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• pp.10-18
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• 2014

현대인의 생활 수준이 높아지고 여가 시간이 증대함에 따라 육체적인 건강은 물론 정신적 건강에 대한 관심과 놀이적 요소가 포함된 스포츠를 선호하는 사람들이 점점 더 증가하고 있다. 스포테인먼트(SporTainment)는 스포츠(Sports)와 엔터테인먼트(Entertainment)의 합성어로써 스포츠와 오락성을 아울러 갖춘 것을 의미한다. 또한 실감미디어 기술 분야에서는 사용자의 오감을 자극하는 감각적 피드백 기술을 통해 현존감과 몰입감을 높이기 위한 연구가 활발히 진행되고 있다. 이러한 감각적 피드백 기술들은 재미와 흥미 요소를 기반으로 학습적 효과를 포함 한 게임, 교육, 국방 등 다양한 응용 분야에 활용되고 있으며, 가상 환경에 실감효과를 가미함으로써 사용자의 현존감과 몰입감을 극대화할 수 있는 응용 서비스로 확대되고 있다. 본 연구에서는 자전거 시뮬레이터에 감각 효과 재현 장치들을 결합한 스포테인먼트용 실감 자전거 시뮬레이터를 개발함으로써 사용자의 현장감을 향상시키고자 하였다.

• KIEAE Journal
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• 제10권3호
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• pp.43-50
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• 2010

Natural lighting is directly connected with our mental and physical health. For working or learning effect, the proper natural lighting is required for improving our living conditions. School facilities, especially, are the place where includes students' ordinary activities with learning behaviors during the school years from elementary to high school. This study was carried out for the purpose introducing a basic database in that planning a school by researching on the actual in the natural lighting system of some schools' classroom, estimating, and analyzing through a simulation, which resulted in a method of improving the natural lighting system. As a result of measuring and analyzing Daylight Factor(DF) during the time from 9 am to 3 pm when students are activating in their classroom, generally DF range of the sides near to window and aisle seats zone are not distributed well. Besides, two out of four school which are researched would not reach the standards of the law for school sanitary while rest of the schools meet the standards; Average DF 5% and Minimum DF 2%. And the result of a simulation by RADIANCE program shows the most appropriate DF range when it is applied in variable numbers about an oriehows the- South-east 15, south-east 30, south-east 45, south-west 15, south-west 30, and south-west 45 degrees. When it is applied in the variable numbers about glass transmittance - 60%, 70%, and 80% in condition facing south of a classroom, the result shows that the DF range of 80% transmittance is relatively higher than other glasses in the classroom. Thus, when a school is built, plans for an orientation is necessary for improve of elementary schools' environment with the glass installation which is made for high transmittance and is regarded with the students' activities time.

• 대한간호학회지
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• 제33권2호
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• pp.189-199
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• 2003

Purpose: The purposes of this study is to develop an educational program to prevent sexual abuse of children and to improve the physical and mental health of children by providing a rape-free environment and safety education. This program will provide parents and children with information on how to prevent sexual abuse in children. Children learn specific methods to avoid being victimized both at home and outside the home through a learning game and simulation, which is based on problem solving. Method: This program was developed based on a literature reviews, surveys and negotiation process. School- aged-children, parents, and teachers were interviewed to reveal their educational needs based on their experiences related to sexual abuse. Result: This program includes useful subjects such as safety education, early detection of sexual abuse, crisis management, resource persons, and phone numbers of available hospital. Counseling is provided by researcher or by a pediatric psychiatrist if needed. Conclusion: This program could be adequately utilized for prevention of sexual abuse of children. It also will provide an intervention strategy for abused children. This educational program was distributed to all of the elementary school through the Ministry of Education and Human Resources Development.

• 한국시스템다이내믹스연구
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• 제15권2호
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• pp.5-25
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• 2014

The purpose of this study is to analyze the effects of nuclear power plant workers and organizational characteristics on accidents, and seek the combination of policies for reducing accidents. For this purpose, it grasped, by using System Dynamics and Causal Loop Diagram, how various factors that cause accidents in nuclear plants are interrelated, and performed simulations after building simulation models. As a result of the analysis, first, the fundamental cause of safety accidents in nuclear power plants turned out to be the time constraint on the workload. Second, it turned out that as the workload of workers increases, physical and mental stresses increase, thereby increasing accidents due to errors and violations. Third, it turned out that as the levels of educational training and compliance with regulations and procedures are enhanced, accidents are reduced. Lastly, it turned out that as the combination of policies (reliance level + working environment + educational training + compliance with regulations and procedures) is increased, accidents are reduced. Especially, it turned out that if the combination of policies is increased by 30%, more than 10 cases of accidents are reduced.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 추계학술대회논문집
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• pp.253-257
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• 2007

In case of the hydraulic turbine dynamo room at Dam, due to its big volume and reflexible finishing material, since the noise of electricity-generation is amplifying, it influences the difficulty of mutual communication among the workers, also it is causing both mental and physical damages to those workers in the neighboring office. Accordingly, after presentation of the optimized renovation model of the hydraulic turbine dynamo room using the acoustic simulation, this Research has compared and evaluated them using the auralizational technique between the present condition of "before improvement" and the acoustic condition of "after improvement". As the result of psycho-acoustics experiment, as the acoustic conditions at both "before & after Improvement" were apparently compared, it appeared that there is a considerable amount of noise-reduction effect at psycho-acoustics. It is considered that such material could be utilized as the valuable data hereafter for the time when any construction and renovation of the hydraulic turbine dynamo room and other similar workshop.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1993년도 추계학술대회발표논문집; 서강대학교, 서울; 25 Sep. 1993
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• pp.134-152
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• 1993

Many business forecasting problems are characterized by infrequent occurences, a large number of variables, presence of error, and great complexity. Because no forecasting models and tools are effective in handing these problems, managers often use the outcomes of past analogous cases to predict the outcome of the current one. They (1) observe significant attributes in describing a case, (2) identify the past cases similar in these attributes to the current case, and (3) predict the outcome of the current case based on those of the analogous cases identified through some mental simulation and adjustment. This process of forecasting can be termed forecasting-by-analogy. In spite of fairly frequent use of this forecasting process in practice, however, if has not been recognized as a primary forecasting tool, nor applied on a regular basis. In this paper, by automatizing this process using computer models, we develop a case-based forecasting system(CBFS), which identifies relevant cases and applies their outcomes to generate a forecast. We demonstrate the effectiveness of the CBFS in terms of its accuracy in predicting the outcome of the current problem based on the similar cases identified. We compare the forecasting accuracy of the CBFS with that of regression models developed by stepwise procedure under varied simulated problem conditions. The CBFS outperforms regression models in most comparisons. The CBFS could be used as an effective forecasting tool.