• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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• pp.160-160
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• 2011

In this work, magnesium (Mg) nanoparticles were plated onto the surfaces of multi-walled carbon nanotubes (MWNTs) in order to investigate the effects of their presence on the high pressure hydrogen storage behaviors of the resultant Mg/MWNTs. The structure of Mg/MWNTs was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The pore structure and total pore volumes of Mg/MWNTs were analyzed by $N_2$/77 K adsorption isotherms. The hydrogen storage behaviors of the Mg/MWNTs were investigated by BEL-HP at 298K and 100 bar. From the results, it was found that Mg particles were homogeneously distributed on the MWNT surfaces. The hydrogen storage capacity increased in proportion to the Mg content. It can be concluded that Mg paricles play an important role in hydrogen storage characteristics due to the hydrogen spillover effect.

• 한국분무공학회지
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• 제9권3호
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• pp.42-49
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• 2004

The present article investigates the influence of droplet drag models on predictions of diesel spray behaviors under ultra-high injection pressure conditions. To consider drop deformation and shock disturbance, this study introduces a new hybrid model in predicting drag coefficient from the literature findings. Numerical simulations are first conducted on transient behaviors of single droplet to compare the hybrid model with earlier conventional model. Moreover, using two different models, extensive numerical calculations are made for diesel sprays under ultra-high pressure sprays. It is found that the droplet drag models play an important role in determining the transient behaviors of sprays such as spray tip velocity and penetration lengths. Numerical results indicate that this new hybrid model yields the much better conformity with measurements especially under the ultra-high injection pressure conditions.

• 지역사회간호학회지
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• 제25권3호
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• pp.187-197
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• 2014

Purpose: The aim of this study was to identify the roles, duties and tasks of elementary health teachers. Required knowledge, skills, and worker behaviors were also examined. Methods: Elementary health teachers' jobs were analyzed by DACUM workshop. First, the health teachers' roles and related jobs were described, and then the jobs were divided into duties and subordinate tasks. The identified roles, duties and tasks were reviewed and refined, and then were organized in a DACUM chart. DACUM committee members discussed not only general knowledge, skills and work behaviors but also future trends and concerns. Results: The DACUM chart for elementary health teachers consisted of 8 duties and 52 tasks. Required knowledge, skills and worker behaviors were also listed. Conclusion: Elementary health teachers play roles as health manager, health care provider, and teacher in school. Their roles, duties and tasks are being changed. Thus, their jobs need to be redefined legally, politically, and institutionally.

• 한국멀티미디어학회논문지
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• 제8권9호
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• pp.1269-1281
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• 2005

게임에서 캐릭터들의 행동제어는 게임 디자이너에 의해 결정되는 것이 일반적이다. 게임 디자이너에 의한 캐릭터의 행동제어는 정형화되어 있기 때문에 게임 사용자의 다양한 기대에 부응하지 못한다. 일반적으로 캐릭터의 행동제어에 사용되는 방식은 규칙기반이며, 규칙기반 중에 가장 많이 활용되는 방식이 FSM(finite state machine)이다 그러나 규칙기반에 의한 행동제어는 게임의 흐름을 단순하게 만들며, 단순한 게임의 흐름에 게임 사용자는 쉽게 실증을 느낀다. 본 논문에서는 캐릭터의 행동제어에 FSM-기반 확률 추정을 적용하여 다양한 행동이 발생되도록 하는 캐릭터의 행동제어 기법을 제안한다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제17권2호
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• pp.91-97
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• 2006

The effects of the Attachment Promotion Therapy (APT) program for the autistic children were reviewed by 8 papers. The program was consisted with play activity centered mother-child interaction, educational activity for parents, lecture, video-feedback, and support. APT program was effective to improve the attachment behaviors and attachment security. And the mother's behaviors to her child became more child-centered, positively responsive, expressive supportively. Ninety six point seven percent of the mothers were satisfied with the APT program. They described that it was helpful to understand their children's developmental limitation and strength, to learn how to play with their children, to make supportive social network among the mothers, to minimize familial conflicts, and to make them much more comfortable with their children. They thought the APT Program was to be a steppingstone of the further educational program. APT program is an effective early intervention to promote social development and decrease autistic problems.

• 대한지구과학교육학회지
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• 제13권1호
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• pp.29-39
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• 2020

본 연구에서는 지구 자전과 태양의 겉보기 운동을 학습하기 위한 역할놀이 활동의 학습 효과 및 어려움을 알아보기 위해서 역할 놀이 활동을 통한 개념 이해정도, 면담으로 수집한 활동에서 나타나는 어려움, 활동 중 시선이동을 분석하였다. 연구 참여자는 초등학교 5학년 학생 22명이며, 역할 놀이 중 실험 행동과 사후 면담, 시선이동자료를 수집하여 분석하였다. 연구결과, 학생들은 역할 놀이 활동을 통해 지구의 자전과 자전방향은 설명할 수 있지만 태양의 겉보기 운동을 설명하는 것은 어려워했다. 학생들은 역할 놀이 활동을 통해 태양의 겉보기 운동을 지각하기 어려워하기 때문에, 자전에 의해 나타나는 태양의 겉보기 운동 개념을 학습하기 위한 역할 놀이 활동은 학습 효과가 낮다.

• 대한물리치료과학회지
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• 제3권1호
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• pp.919-927
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• 1996

Recently sports injuries are increasing due to the development of sports leisure industries as well as the increase of exercising population, and the study for sports injuries is needed more than before. Then the author studied the reasons for injuries, incidence rate, sites and sorts of sports injuries for the middle and high school football players during one year period from Jan. to Dec. 1994. The study subjects were 319 middle and high school players in Pusan and the method was questionnaire method. The results were as follows; 1. The average injury rate due to football play was 3.3 times per person for the 319 subjects during the last one year, and it was highest in goalkeeper as 4.6 times by position. 2. 68 % of the subjects did not receive periodic health examination, 74.9 % wore body protectors. The sports injuries due to football play occurred most commonly in soil play-ground(79.6 %), during training(52.3 %), and in winter time(33.7 %). 3. The commonly occurred injuries by motion were coalition(39.2 %), tackle(12.9 %), dribble (11.4 %) in order; those by sorts were contusion(34.4 %), sprain (32.9 %), spasm(9.0 %) ; and those by body portions lower extremities(82 %), trunk(17.6 %), upper extremities(12.5 %). 4. The frequently used treatment area was home care as in 42.7 % ; treatment methods were physical therapy, acupuncture/moxacautery, rest, operation in order; choices of treatment method were recommendation by coach/manager, and that by medical professional was the lowest as in 2.2 %. 5. If sports injury occurred during play, coach or manager let the players take rest in 56.2 %, but emergent management by medical professional was done only in 1.9 %. The return to play was decided mostly by the player himself(52.8 %), but that decided by a doctor was only in 1.0 %. In conclusion, to lessen the sports injuries due to football play, annual physical check-up, strengthening of play rules, improvement of playground, conditioning exercise, regulation of body protectors, and preventive training for expected injuries behaviors should be done and the decision to return to play and emergent management should be done by a medical professional as well. Football player, sports injury, injured body portions, sorts of injury, treatment method.

• 한국생활과학회지
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• 제17권4호
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• pp.661-677
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• 2008

The purpose of this study is to develop the playground environment model for child care center by analyzing user needs of playground environment. To systemize the playground environment design factors and guidelines, we reviewed the previous research, actual measurement and observation were used as the research methodology. And to recognize the needs of users, the survey and picture survey was conducted to the staffs and children. The scope of survey included child care centers in Seoul and Daejeon, ultimately selecting 12 places in Seoul and 13 places in Daejeon. In terms of the survey period, actual measurement was conducted from June of 2006 to February of 2007, survey and picture survey was conducted from August to September of 2006. For analysis, we used SPSS 10.0 to check the frequency and percentage, as well as to perform cluster analysis. The findings of research can be summarized as below: 1. In playground environment, we observed the area of play ground and ground cover, the independence of play area, play equipment, and the composition of play area. The result of observation showed that while playground area varied widely, ground cover, play equipment, and the composition of play area turned out to be identical, regardless of the playground's area. Therefore, in order to classify various playground environments, we categorized them into 5 types, using the number of children and the area of play ground as a category. Type A had large facilities and small playground area. Type B had small sized facilities and large playground area. Type C had medium sized facilities and small playground area. Type D had medium sized facilities but large playground area. Type E had large sized facilities and large playground area. 2. On the other hand, staffs wanted a tunnel, playhouse, comprehensive play equipment, and a maze to be installed as play facilities, and there were requests for adventure play area and carpenter play area. The picture survey to children showed that they wanted equipments that can provide more thrill, adventure and challenge to them than the ones they see now. Therefore, existing child care center play environments must change from the monotonous and identical environments to the ones that can provide diversities, challenges, and adventures. In the contexts of 5 playground types suggested by this research, type B and D, E where the area of playground were larger than the legally required, should include various play areas and install appropriate play equipments and facilities. Type A and C where the area were small, should provide multipurpose play area to attract the various play behaviors of children.

• 대한가정학회지
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• 제45권3호
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• pp.57-69
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• 2007

The purpose of this study is to examine the impacts of the physical health on health behaviors of the rural elderly. In this study, physical health is measured self-rated health and farmer symptoms. The specific questions addressed in this study are: What are the general tendencies of health behavior, self-rated health and farmer symptoms? What are the direct impacts and indirect impacts of respondents' characteristics, self-rated health and farmer symptoms on health behaviors of the rural elderly? For this purpose, survey data was gathered from 881 rural elderly who live in a village. The statistical methods used for data analysis were descriptive statistics, correlations, and path analysis with spsswin 12.0 program. The major findings of this study are as follows: The level of health behaviors and self-rated health is low and the level of farmer symptoms is high. In general, it can be said that respondents of this study have the low level of physical health and health behaviors. A path analysis shows the relation of variables, which influence on health behaviors. Economic status, education status and farmer symptoms play direct and positive effects on health behaviors. Especially, the effect of farmer symptoms is more important than the others. Sex and age are indirectly significant on health behavior. The results obtained from the study confirm that objective physical health, like as farmer symptoms, plays important roles in health behavior of the rural elderly. It means that the Korean rural elderly need many facilities and services to promote their physical health.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제6권1호
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• pp.109-115
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• 1995

2세 10개월된 중증 정신지체아동의 이미증 치료에서 지시따르기 훈련을 통한 장난감 놀이지도(DRO)와 이미증 제재수단으로 얼굴가리개(Facial Screening)가 사용되었다. 이 아동의 이미증은 주로 손가락 빨기, 장난감 입에 넣고 빨기, 주위의 물건에 닥치는 대로 입을 대고 빠는 형태이다 빠는 행위의 발생은 장난감 놀이지도 전에는 15분 당 평균 18.6회였으나, 놀이지도 기간에는 평균 5.4회, 얼굴가리개를 통해 빠는 행위를 제재한 치료기간에는 평균 2.3회로 감소되어, 얼굴가리개의 사용이 이 아동의 이미증 치료에 큰 효과를 보였다. 이 아동은 이미증 이외에 구토행위를 보였는데, 본 연구에서는 구토행위를 치료하지 않았으나, 놀이지도 및 이미증 치료기간 동안 구토행위가 저절로 감소된 현상을 보인 것은 기존 연구에서 밝혀진 바와 같이 한 행동의 치료가 다른 문제행동의 감소에 영향을 줄 수 있음을 증명하고 있다.