• Nuclear Engineering and Technology
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• 제55권10호
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• pp.3709-3715
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• 2023

It is an important work to measure the dimensions of underwater spent fuel assemblies in the nuclear power industry during the overhaul, to judging whether the spent fuel assemblies can continue to be used. In this paper, a three dimensional reconstruction method for underwater spent fuel assemblies of nuclear reactor based on linear structured light is proposed, and the topography and size measurement was carried out based on the reconstructed 3D model. Multiple linear structured light sensors are used to obtain contour size data, and the shape data of the whole spent fuel assembly can be collected by one-dimensional scanning motion. In this paper, we also presented a corrected model to correct the measurement error introduced by lead-glass and water is corrected. Then, we set up an underwater measurement system for spent fuel assembly based on this method. Finally, an underwater measurement experiment is carried out to verify the 3D reconstruction ability and measurement ability of the system, and the measurement error is less than ±0.05 mm.

• 대한치과보철학회지
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• 제44권4호
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• pp.405-413
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• 2006

Purpose : This study was conducted to evaluate the effect of denture placement on nutrition status and quality of life in the urban elderly Material and method : The first survey was conducted from 45 targeted elderly people(25 experimental group, 20 control). In the first survey, information on general characteristics, chewing ability, food intake and nutrient intake, anthropometric measurement, and degree of satisfaction in life were obtained. The second survey was conducted to evaluate the effect of denture placement with same method as the first survey. Results : Before denture placement, there are no statistical significant differences (in general characteristics, chewing ability, nutrient intake, anthropometric measurement, and degree of satisfaction in life) between experimental group and control. But after denture placement, survey shows that there is statistically significant difference in chewing ability between two groups. The experimental group have higher intake of energy, protein, carbohydrate, iron, and vitamin C. in nutrient intake. And after denture replacement, there is significant improvement in degree of satisfaction in life. After denture placement there are significant changes in agitation and attitude toward own aging according to Lawton's factor classification. Conclusion: In short, this study shows that chewing ability improvement of the elderly has strong positive effects to their food intake, nutrient status and quality of life.

• 교육심리연구
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• 제22권2호
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• pp.367-384
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• 2008

본 연구의 목적은 인과추론검사에 대한 이론적 틀을 바탕으로 인과추론능력 검사도구를 개발하고 이를 타당화하기 위한 예비 연구를 진행하는 것이었다. 구체적으로 본 연구에서는 인과추론의 대상 영역을 행동, 심리, 자연 영역으로 구분하여 각 영역에서의 인과추론능력을 측정하는 그림 검사를 개발하였다. 예비 검사와 본 검사를 통하여 2차에 걸쳐 문항을 선별하였고, 구인타당화, 공인타당화에 대한 검증이 이루어졌다. 총 59문항에 대한 선별 과정을 통하여 예비 검사에서 18문항, 본 검사에서 최종 12문항을 확정하였다. 최종 12문항으로 이루어진 인과추론능력검사의 신뢰도는 Cronbach ${\alpha}=.72$로 나타났고, 구인타당화를 위한 탐색적 요인분석과 확인적 요인분석을 실시하였다. 탐색적 요인분석 결과 본 검사가 가정한 세 가지 하위 구인인 행동, 심리, 자연의 삼요인이 추출되었다. 또한 확인적 요인분석 결과, 본 연구가 가정한 행동, 심리, 자연의 삼요인 모형의 이론적 요인구조가 적합한 것으로 나타났다. 준거 타당도 검증을 위해서 한국교육개발원의 추리능력검사를 사용하였고, 이 검사와의 상관은 .55로 두 검사가 추론이라는 공통 구인을 측정하고 있음을 확인하였다. 또한 검사의 총점 및 하위 점수에서 성차가 발견되지 않았고, 성에 따른 문항의 차별적 기능 분석결과 2문항만이 차별성을 갖는 것으로 나타났다. 한편, 학년별 차이는 유의하게 나타나는 것을 확인할 수 있었다. 이는 본 검사가 성차에 상대적으로 편파적이지 않으면서도 연령에 따른 인과추론 발달 추이를 어느 정도 반영하는 검사도구임을 보여주는 것이었다. 본 연구에서 개발된 아동용 인과추론능력검사는 아동의 사고능력에 대한 평가뿐만 아니라, 사고력 발달에 있어 지체나 장애를 나타내 보이는 아동들을 선별하는 데 유용하게 적용될 수 있을 것이다.

• 대한물리치료과학회지
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• 제8권1호
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• pp.821-831
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• 2001

Motor ability were hypothesized to be major factors that may have an influence on IADL(instrumental activities of daily living). The purpose of this study was to investi gate the effect of motor ability of elderly on IADL. This study consisted of forty eight elder male and ninety elder female. The subjects were selected from L, S, Y-institution in kyoung ki do. The average age of elder male and female was 73.81, 71.38 years. The data were analyzed with t-test, repeated measurement, correlation test, regression test, using SPSS PC+ and MINITAB program. The measurement item of motor ability was muscle strength(left, right- grip strength), flexibility(sitting trunk flexion, trunk extension, leg raising while in a standing position), agility(whole body reaction test, standing up), power(sargent jump), balance (stork stand). IADL was measured with Philadelphia Geriatric Center IADL. The result of this study were the following : 1. The factor of significant difference of between elder male and female was muscle strength, flexibility, power but no significant difference was agility, balance. 2. Between IADL of elder male and female was no significant difference. 3. Correlation of IADL and Motor ability of elder male had effect on muscle strength and power, agility. Correlation of Body composition and Motor ability of elder female had effect on muscle strength and power, agility. As a result of this study, optimal motor ability of elder male and female had improved IADL. In addition to, this result of this study, it can suggested the consideration of the Health promotion program for elderly.

• 한국치위생학회지
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• 제23권2호
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• pp.105-113
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• 2023

Objectives: The purpose of this study is to verify the usefulness and practicality of the program in the daily life of the elderly by performing a three-dimensional tongue muscle exercise for the elderly to identify the dysphagia, swallowing ability, and tongue pressure. Methods: The subjects of the study were 29 elderly people aged 65 or older living in Busan, divided into a oral exercises group and tongue strength training program combined with oral exercises group, and operated 16 times for 8 weeks twice a week, and the pre and post-program evaluation was conducted in the 1st and 8th weeks. For variable selection, 7 general characteristics, 5 oral health-related characteristics, 5 Likert scale for swallowing disorder, repetitive swallowing ability test for swallowing power measurement, and tongue pressure measurement was used. Data analysis was conducted using SPSS window program 25.0 version (IBM), general characteristics and homogeneity tests, oral health-related characteristics and homogeneity tests were chi-square test, swallowing disorder, swallowing ability, and change in tongue pressure were paired t-test, Wilcoxon signed rank test, t-test, Mann-Whitney U test for swallowing disorder and changes in swallowing ability and tongue pressure, and Spearman's correlation for the relationship between swallowing disorder and swallowing ability and tongue pressure. Results: As a result of tongue strength training program combined with oral exercise, both relieve swallowing disorder and improve low eating and tongue pressure than oral exercise, and the difference in improvement effects of both relieve swallowing disorder, swallowing ability, and tongue pressure is higher. Conclusions: Based on the results of this study, it is believed that simple and practical oral muscle function reinforcement products and practical use are needed, and institutional devices to seek oral health promotion programs for the elderly are needed.

• 아동학회지
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• 제34권1호
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• pp.123-140
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• 2013

The purpose of this study was to examine the effects of counting ability on young children's mathematical ability and mathematical learning potential. The subjects in this study were 75 young children of 4 & 5 years old who attended kindergartens and child care center in the city of B. They were evaluated in terms of counting ability, mathematical ability and mathematical learning potential(training and transfer) and the correlation between sub-factors and their relative influence on the partipants' mathematical ability was then analyzed. The findings of the study were as follows : First, there was a close correlation between the sub-factors of counting and those of mathematical ability. As a result of checking the relative influence of the sub-factors of counting on mathematical ability, reverse counting was revealed to have the largest impact on total mathematical ability scores and each sub-factors including algebra, number and calculation, geometry and measurement. Second, the results revealed a strong correlation between counting ability and mathematical learning ability. Regarding the size of the relative influence of the sub-factors of counting ability on training scores, reverse counting was found to be most influential, followed by continuous counting. While in relation to transfer scores, reverse counting was found to exert the greatest influence.

• 한국정밀공학회지
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• 제24권12호
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• pp.104-110
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• 2007

Internal defects are mainly caused by a corrosive action and degradation in the pipe used in a nuclear power plant or factory. The ESPI method have the many advantages when compared with conventional method. The advantage are the area measurement ability at one time and non-contact measurement ability in the real-time. In this paper, we studied on the measurement of a internal defect by using out of plane ESPI technique. Here, we compared the experimental results using out of plane ESPI with the FEM results.

• 국제물리치료학회지
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• 제8권2호
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• pp.1175-1181
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• 2017

The purpose of this study was to investigate the effects of core muscle training on balance ability. Forty subjects in their 20s participated in a 6 week core muscle training program. Balance ability before and after the intervention were assessed and analyzed using the Romberg test, which was conducted on the floor, pedalo, and balancefit. The differences between the measurement methods of balance ability using varied platforms was also compared and analyzed. After the 6-week core exercise training program, the training group represented statistically significant increases in all 3 methods for static balance ability. In the control group, all 3 methods represented no statistically significant increases. Upon comparing the different methods of the Romberg test, there were no notable differences between conducting the test on varying platforms for both groups. This study suggests that the core muscle exercise training program increased the balance ability.

• 한국수학교육학회지시리즈A:수학교육
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• 제52권4호
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• pp.531-547
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• 2013

The purpose of the study is to examine how effects of activities using Google SketchUp on students' spatial ability and 3D geometric thinking in measuring the volume of solid figures. By comparing the results from pre- and post-tests between the experimental group and control group, we found that activities using Google SketchUp help students improve their spatial ability in the spatial orientation and visualization. In addition, more than half students in the experimental group moved from level 4 up to level 7 in thinking process of measuring the volume in terms of Battista(2004)'s levels. This study suggests that the instruction with Google SketchUp can help to improve students' spatial ability and 3D geometric thinking in the regular class in middle school. In addition, SketchUp can be an advanced technological tool to support students' self-directed learning, which create an efficient educational environment and a great opportunity to learn geometry in an effective manner.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제24권3호
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• pp.587-610
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• 2010

이 논문은 물리량 중에서 가장 기본이 되는 길이에 대해, 최근 수학교육에서 측정 영역과 관련하여 가장 강조되고 있는 어림 능력의 향상 방안에 대해 논의한다. 기초학력 진단평가와 몇몇 연구에 따르면, 학생들의 어림 능력이 상당히 저조한 것으로 나타났다. 한편, 개정 교육과정은 세계적인 동향에 맞추어 어림과 양감 형성을 추구하고자 시도하였다. 하지만 그러한 노력이 교과서에 충분히 반영되지 못하고 있으며 어림 및 양감 형성이라는 측면이 상당히 미진하다. 따라서 본 연구에서는 길이 어림과 관련된 교과서 내용을 분석하고 그 대안을 생각해봄으로써 차후 교과서 개발을 위한 시사점을 제공하고자 한다.