• 한국학교수학회논문집
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• 제13권2호
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• pp.303-322
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• 2010

본 연구의 목적은 기하학습 교구인 조립 교구인 4D Frame 활용 학습이 초등학생들의 공간 지각 능력 신장에 미치는 영향을 분석함으로써 수학 교수 학습 방법의 개선에 도움을 주기 위한 것이다. 서울시내 5학년 2개 반을 임의로 선정하여 한 학급은 기하 교구를 활용한 수업을 실시하는 실험 집단(31명)으로, 한 학급은 일반 수학 수업을 실시하는 비교 집단(32명)으로 선정하여 한 달간 10차시의 수업을 실시하였다. 본 연구에 사용한 실험 설계는 준 실험 설계(Qusai-Experimental-Design) 중 이질 통제 집단 전후 검사 설계(Nonequivalent control group pretest-posttest design)를 적용하였다. 실시한 검사 도구는 공간 감각 검사로 사전 사후 모두 동형 검사지를 사용하였다. 또한 수업 관찰 분석과 학생들의 학습지에 대한 반응을 분석하였다. 연구의 결과 첫째, 기하 교구의 활용 학습은 공간 지각 능력 신장에 있어서 효과적이었다. 둘째, 기하 교구의 활용 학습은 공간 감각에 있어서 지각의 일관성과 공간 관계의 지각력 신장에 있어서 효과적이었다. 그리고 후속 연구로 동일 교구의 보다 광범위한 적용 및 다양한 교구의 개발을 제언하였다.

• 한국산학기술학회논문지
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• 제21권7호
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• pp.350-356
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• 2020

목적: 본 연구는 수술 후 회복실에 입실한 환자에게 가온요법 간호중재 프로그램이 미치는 효과를 파악하여 간호중재방안 개발 및 기초자료를 제시하고자 시도된 비 동등성 대조군 유사 실험연구이다. 연구방법: 연구의 대상자는 가온요법 프로그램을 적용한 실험군 31명, 대조군 31명을 대상으로 실시하였다. 가온요법은 가온기를 통해 회복실에서 38~43℃ 범위 내 가온하였다. 대상자의 일반적 특성은 실수와 백분율로 파악하였고, 실험군과 대조군의 동질성 검정은 𝑥²-test와 In-dependent t-test로 파악하였다. 실험군과 대조군의 시간에 따른 체온, 통증, 전율의 차이는 repeated measure ANOVA로 파악하였다. 실험군과 대조군의 온도 편안감의 차이는 t-test로 파악하였다. 결과: 첫째, 수술 직후 반복 측정 결과 실험군과 대조군의 체온, 통증, 전율이 유의한 차이를 보였다. 둘째, 온도 편안감은 유의한 차이를 보였다. 결론: 이와 같이 수술 후 가온요법 중재 시 환자에게 긍정적인 효과가 있는 것을 확인할 수 있었다.

• 한국산업보건학회지
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• 제7권2호
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• pp.289-297
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• 1997

Work-related low back pain(below LBP) is one of the major cause of morbidity, disability, limitation of activity and economic loss. Therefore the work-related LBP is one of the major issue in the field of industrial safety and health. This study was performed for detecting the risk factors and proposing the effective control programs of work-related LBP. The subjects were male workers employed at the welding and metal factory. The data was collected by self-reported questionnaire, interview and checking abdomen muscular and grasping power for two days on October, 1993. The contents of questionnaire were as follow: the experience of LBP, general characteristics, physical characteristics, employment status, type of work and working environment. The number of cases was 104 with a history of work-related LBP, so the prevalence of work-related LBP was 35.0%, and the number of controls was 140 without any history of LBP. As a result, marital status, educational level, abdomen muscular power, tenure, category of job, satisfaction of job, working posture, satisfaction for table and chair and lifting materials showed a statistical significance between the case and control groups. 284 Lifting jobs were quantified by NIOSH lifting equation method and ergonomic computer modelling methods. There were no significant differences in the action limit and disc compression force between group with LBP and without LBP. But in the lifting frequency and cumulative disc compression force there were significant differences. Therefore work-related LBP should be prevented by the ergonomic and environmental control.

• 한국산업융합학회 논문집
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• 제17권1호
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• pp.21-26
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• 2014

The focus of this paper is the designing a flexible three fingered hand system with 16 D.O.F for dynamic manipulation with an intelligent controller, and to build a useful database for dynamic manipulation based on the experimental results. The weight of the hand module is only 0.7 kg, but flexible motion and powerful grasping are possible. To achieve such a dynamic motion in a robotic hand, we have developed a flexible fingered hand with a control system incorporating image recognition system in which we deal with the problems of not only accuracy and range of motion but also the flexibility of hand. The fingers are arranged so as to grasp both circular and prismatic objects. In order to achieve the light mechanism, we reduced the number of joints and fingers as much as possible. We used three fingers, which is the minimum number to achieve a stable grasp.

• 한국조리학회지
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• 제24권3호
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• pp.60-70
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• 2018

Rapid economic growth brought material affluence and convenience, but it also has caused a negative issue, such as environmental damage. Therefore, this research holds the purpose of grasping structural influencing relationship of environmental awareness of cook, which is taking an important role in food safety among workers in hotel restaurants with eco-friendly attitude and food safety pursuit behavior. To achieve the purpose, collected materials were tested for the fidelity, organic causation and control effect, using Structural Equation Modeling for frequency analysis, confirmatory factor analysis, credibility analysis and hypothesis testing with SPSS (V23.0) and AMOS (V21.0) programs. Environmental awareness of hotel cook has causation with eco-friendly attitude, and the attitude has meaningful causation with food safety pursuit behavior. That is, it proved that cooks are taking care of their job carefully from the pre-cooking stage while most of people ignore the storing stage. The result shows not only hotel's own training session, cook's level of consciousness on the food safety and they are working with high sense of responsibility. The limitation of this research is that it only conducted with cooks of deluxe hotels in Busan, and it could not include various variables about environmental awareness. Therefore, it is expected that the lacking contents to be dealt by a follow-up study.

• 한국초등과학교육학회지:초등과학교육
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• 제20권1호
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• pp.31-43
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• 2001

The purposes of this study were grasping the degree of students' understanding for course contents through the concept mapping strategy as meaningful learning in science and measuring the effect for change of conception and changing the misconception. The results of the study were as follows: 1. Before the lesson, only 10.7％ of students had scientific conception of molecular motion. Other students had various kinds of misconceptions. 2. The extent of concept formation after lesson through the using concept mapping strategy was tested. As a result, compared with the controlled group, the experimental group showed higher extent of sound concept formation (statistical significance level 0.05). 3. The differences between the experimental group and the control group were analyzed into quantitative and qualitative points of view. The results of the comparison showed that the maps of the students were well configured in the categories of the relationship, the hierarchy and the examples; while students showed lower abilities in the category of the cross-links. 4. The student's attitudes to ward concept mapping was positive. Most of the students answered that teaching strategy of concept mapping benefits them in meaningful learning outcomes.

• 기본간호학회지
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• 제15권4호
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• pp.457-466
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• 2008

Purpose: The purpose of this study was to determine the effects of low intensity exercise program with telephone coaching on the physical fitness of elderly people who are receiving home visiting nursing care. Method: This study was conducted using a non-equivalent control group pretest-posttest design. The participants were 61 elders. Elders (34) in the experimental group performed low intensity exercise and of these 16 received telephone coaching. The low intensity exercise program consisted of stretching, muscle strengthening with an elastic band, massage, and ball exercise, five days a week, for sixteen weeks. Data were collected from July 2007 to December 2007. $x^2$-test, ANCOVA with SPSS WIN 11.0 program were used to analyse the data. Results: There were statistical differences in the right grasping power in the right hand (p=0.021), Raising behind of right arm (p=0.006), Raising behind of left arm (p=0.007). Conclusion: These results indicate, that a low intensity exercise program with telephone coaching can help improve physical fitness in elders receiving served home visiting nursing care.

• 한국산업정보학회논문지
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• 제9권4호
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• pp.1-7
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• 2004

본 논문에서는 한국어 문장의 구조를 파악하는 데에 결정적인 역할을 하는 조사에 대한 정보를 보다 적극적으로 이용하는 파싱 방법을 기술한다. 이러한 방법을 실현하기 위하여 용언을 세밀하게 분류하였으며, 이를 바탕으로 문장의 형태를 분류하고 이 문장 형태에 필수적으로 나타나는 명사구의 문법적 역할을 파악하는 방법을 이용한 파싱을 시도하였다. 또한, 내부적으로는 언어학적인 틀에서 크게 벗어나지 않는 범위 내에서 약간의 경험지식을 동원하였다. 이를 구현함에 있어서 문법의 수준에서 파싱을 직접 제어하기 위하여 조건단일화 파싱을 사용하였다. 본 논문에서 제시한 파싱 방법은 분석의 초기에 불필요한 가지를 전지함으로써 결과 트리가 간략해져 복잡한 문장의 모호성을 상당두분 제거할 수 있게 해준다.

• 한국환경과학회지
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• 제18권6호
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• pp.683-690
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• 2009

The water quality of reservoir can be controled by water quality prediction model because it can not only grasping the present water state but also predicting the water quality in future. In this study, WASP model is used to predict the water quality of Chungju reguration reservoir. This model has some special option which predicts the pollutant outflow phenomenon caused by the contamination sources. So this model is widely used because that can present the scientific basis in this field. This model can help the managers make the right choice of water quality policy. Environmental grade of Chungju reguration reservoir is in III,IV grade which is in bad condition comparatively. The water contamination will be in poor as the year passes. When considering T-N, T-P which are the nutrient to control eutrophication, the concentrated administration about contamination sources is in urgent.

• 로봇학회논문지
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• 제7권1호
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• pp.9-19
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• 2012

This paper proposes a performance index for the multiple shape object handling of dual arm manipulator to determine whether a robot is good or not. When the dual-arm manipulator grasps a fixed object and is posed, the dual-arm manipulator should procure a space to freely control the manipulator. As a performance evaluation parameter, each joint torque from current sensor signal is utilized. From the current information, torque and energy for each joint are estimated. In this paper an performance index for an unstructured object is defined by an energy-cost function, and stability analysis for each motion is derived by the maximum force to the object. The maximum force to the object is computed by the inertia of object and acceleration information of end-effector. The acceleration data are derived by the double derivation of each encoder signal. Manipulability measure which implies how efficiently the dual-arm manipulator can move with the grasped object, can be represented by the intersection of the two manipulability ellipsoids for the left and right arms. Effectiveness of the proposed algorithm has been verified through the practical simulations and real experiments.