• 대한가정학회지
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• 제42권1호
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• pp.99-113
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• 2004

To protect farmers from solar radiation and UV, the movable sunshade tent was designed and its protection efficiency was measured in the artificial chamber and outdoors. Sunshade tent and the existing farmer's hat were examined. The results were as followes； Heart rate, total body weight loss and temperature of clothing microclimate on the chest and the back were lower in using sunshade tent than those in wearing existing hat in two experiments. In subjective sensation, subjects answered to feel significantly hotter and more uncomfortable in wearing existing hat in two experiments. Rectal temperature was significantly lower using the sunshade hat in experiment at outdoors(p<0.001).

• 한국국방경영분석학회지
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• 제9권2호
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• pp.61-68
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• 1983

The traditional theories of games are based on an assumption that the payoffs have a single dimension. In reality, any alternative is likely to imply more than one payoff. This paper deals with the game against nature with vector payoffs. The purpose of this paper is to develop methods for finding the practical optimal strategy in the game against nature with vector payoffs. Under the assumption that a prior probability over the stats of nature is given, this paper shows that a practical optimal strategy in this game can be obtained by applying a entropy method in order to assess the payoff weight and by employing the concept of compromise solutions in order to reduce the non-dominated solutions. When subjective payoff weights are unknown as well as known, these methods can be used. A numerical example is given.

• 산업경영시스템학회지
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• 제29권2호
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• pp.1-6
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• 2006

This study proposes a new approach which combines Data Envelopment Analysis(DEA) and the Analytic Hierarchy Process(AHP) techniques to effectively evaluate Decision Making Units(DMUs). While DEA evaluates a quantitative data set, employs linear programming to obtain input and output weights and ranks the performance of DMUs, AHP evaluates the qualitative data retrieved from expert opinions and other managerial information in specifying weights. The objective of this research is to design a decision support process for managers to incorporate positive aspects of DEA's absolute numerical evaluations and AHP's human preference structure values. It is believed that a pragmatic manager will be more receptive to the results that include subjective opinions incorporated into the evaluation of the efficiency of each DMU efficiency. The WPDEA method provides better discrimination than the DEA method by reducing the number of efficient units.

• 한국안전학회지
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• 제15권3호
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• pp.108-114
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• 2000

The work posture impose additional stress upon human workers so that it should be carefully considered in designing works. However, we have a lot of manufacturing plants which convert their standing workplace to sedentary one. To confirm the validity of that trend, the authors conducted an experimental study, and compared the results. The results of the EMG and the self-cognitive symptoms, in general, showed a correspondent trend that the sedentary work posture was rated more comfortable. At the beginning of the work, complaint of the lowerback was higher whereas that of the lower leg and the feet went higher as the time elapsed. If the weight of workpiece were heavier than 500g, increasing rate of bodily discomfort in the sedentary posture were greater than that of the standing posture. In the meanwhile, the standing posture was consistently superior to the sedentary posture in its performance. Thus, in conclusion, for a light assembly work, sedentary work posture would be recommendable because bodily discomfort would be larger irrespective of the small increase of performance increase.

• Journal of Chest Surgery
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• 제1권1호
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• pp.37-44
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• 1968

This paper is a review of 29 cases of mediastinal tumors originating in the mediastinum or metastasized from other organs and classified on the basis of histopathological types and specific anatomic location in this depart-ment, during nine years period from January 1959 to December 1967. In twenty-three cases, diagnosis was confirmed by histological findings and the rest of the cases were considered to be mediastinal tumors by clinical and/or roentgenological findings. In this series, metastatic mediastinal carcinomas of unknown primary site were most frequent [30.4%] and lymphoma ranked second in frequency comprising 21.7% of total. Range of age was 5 to 61 years and average mean age was 39 years old. Sex ratio was 1.4 male to female. Subjective complaints in order of frequency were as follows: dyspnea [37%], cough [34%], chest pain[24%] and chest discomfort [21%]. Objective signs were as follows: hoarseness [17%], palpable cervical lymph node[17%], blood tinged sputum [10%], weight loss [10%] and superior vena cava syndrome [7%]. There was no operative mortality. There were histologically nine different kinds of mediasfinal tumors in this series.

• Journal of the Optical Society of Korea
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• 제5권2호
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• pp.49-54
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• 2001

Research on shooting conditions of 3D program production for natural 3D images has been continued. In the study, it has been shown that orthostereoscopic conditions bring about no inconsistency between depth information from perspective of the lenses and that from binocular parallax. A newly developed 3D camera is based on orthostereoscopic conditions, which result in compactness of the camera (weight 8). At the same time, the new camera has a zooming function and is valuable in many ways, especially sport broadcasting. In this paper, we give an outline of the newly developed 3D HDTV camera and the results of subjective evaluation tests on psychological effects of the images shot by the camera. These tests show that the images shot by this camera are more powerful and comfortable to view than those shot by existing 3D cameras.

• 대한영양사협회학술지
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• 제7권1호
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• pp.72-79
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• 2001

The purpose of this study is to investigate the dietary intakes and nutritional status in total gastrectomized patients. We assessed the nutritional status by dietary intake, anthropometric data and biochemical data. And we also checked the subjective postprandial symptoms and gastrofiberscopy to detect the reflux esophagitis in 22 patients who were free of tumors for more than 1 year after total gastrectomy by the three different reconstruction methods(Loop esophagojejunostomy with A-loop tie/ Roux-en-Y esophagojejunostomy/Roux-en-Y esophagojejunostomy with Paulino pouch). Any patients were not in malnutrition status in respect to biochemical data. By assessing the dietary intake, the average daily calorie intake was 1848.2$\pm$440.2kcal, it was 105.9$\pm$23.8% of energy requirement. But there was weight loss in 21 patients of 22 patients after operation and the weight loss was 12.8% of preoperative weight(61.0$\pm$7.9 vs. 53.5$\pm$6.7kg, preoperatively vs. at the time of study). This may suggest that continuous nutritional care is necessary after total gastrectomy to promote sufficient calorie intake, keeping good nutritional state. There were no significant differences between the methods of reconstruction and dietary intakes or nutritional status. Endoscopic esophagitis was more frequently found in patients of loop esophagojejunostomy than any other reconstruction methods(p<0.001), but it didn't show any effect on the dietary intakes.

• 대한교통학회지
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• 제20권1호
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• pp.65-76
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• 2002

오늘날의 교통현실은 전체적인 교통망을 분산화시켜 임의의 교통환경, 즉, 교통사고, 병목 구간, 긴급공사 등 예기치 못한 상황에 실시간적으로 대응할 수 있는 교통추론이 필요하다. 이러한 역할에 영향을 미치는 것 중 하나가 도로의 운전자 경로탐색 과정이다. 본래, 인간의 차량운전에 대한 경로선택 문제는 여러가지 환경변수가 많은데, 그 중 대표적인 변수요소가 주행시간, 주행거리, 주행비용 등을 고려할 수가 있으며, 그 외 운전자의 심리(기분)상태도 많이 좌우한다 그리고, 가상의 우위경로 채택의 미묘성도 잠재되어 실제적 탐색에 어려움을 주고 있다. 따라서, 인간의 심리와 관련된 인공지능 분야의 알고리즘과 의사제어기법 등이 필요한데 본 연구는 교통경로의 최적탐색을 위해, 기존의 경로탐색과는 달리, 인간의 사고과정에 착안하여 퍼지평가 및 계층분석법을 사용하여 구현하였으며, 애매한 주관적 판단을 정량적으로 분석.평가하였다. 그리고 경로에 대한 평가요소 및 중요도, 평가치를 운전 전문가로부터 의견 수렴한 것을 기초로 도출하였으며, 실제 효용성을 진단하고자 경로모델의 예를 사용하였다. 모델평가는 평가요소에 대한 속성소속함수화 및 평가치 규정, 계층분석법에 의한 중요도 결정, $\lambda$-퍼지척도에 의한 중요도의 비가법적 표현, Choquet 퍼지적분 등으로 수행하였다 결국 퍼지 척도치와 평가치를 퍼지 적분(fuzzy integral)으로 종합평가하고, 최종 판단 추론하는 알고리즘을 제안하여 최적의 경로를 선택함을 보여 주었다.

• 지역사회간호학회지
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• 제19권3호
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• pp.431-442
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• 2008

Purpose: The Purpose of this study was to examine the degree of obesity stress and analyze factors having an effect on obesity stress among college women. Method: The subjects were 347 female students from a university in J City. Data were collected using a self-report questionnaire for general characteristics, health-related characteristics, and current and preferred somatotype. Obesity stress was measured using 10 items developed by Cho (1996) based on Body Attitudes questionnaire (BAQ) of Ben-Tovim and Walker (1991). The survey was conducted from September 4 to September 7, 2007. Data were analyzed by t-test, ANOVA, Scheffe test, Spearman's rank correlation test, and stepwise multiple regression using SPSS 14.0. Results: The average score of obesity stress was $2.78{\pm}0.90$ out of 5.00. Stepwise multiple regression analysis showed that the major factors that affect obesity stress of female college students were perceived body shape, disagreement between current and preferred somatotype, history of weight control, body mass index (BMI), and perceived health status, and these factors explained 38.4% of obesity stress. Conclusion: Subjective judgment in the perception of or preference for body shape was the most important factor affecting obesity stress in female college students. Therefore, a plan is necessary to mitigate obesity stress and evaluate individually subjects who perceive themselves to be fat or want to be thinner than the current somatotype. And consultation and constant management are needed to help the high risk group (experience of weight control, BMI ${\geq}23kg/m^2$, not good health status).

• 방송공학회논문지
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• 제22권6호
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• pp.702-712
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• 2017

본 논문에서는 신호 구조에 가중치 맵으로써 Laplacian을 이용한 언샤프 마스킹과 평균 밝기에 가중치 맵으로써 영상의 평균 밝기를 이용한 감마 변환 알고리듬을 제안하고자 한다. 패치를 기반으로 한 기존의 가중치 맵은 신호 구조 및 평균 밝기 영역에서 영상 내 밝기 값이 한쪽으로 치우쳐 세부 정보가 손실되는 단점이 있다. 본 논문에서는 패치 단위의 언샤프 마스킹을 이용하여 세부정보를 향상시켰고, 전역적 및 지역적 영상의 평균 밝기 값을 이용하여 감마 변환된 값을 선형 결합한 기법을 제안한다. 제안하는 알고리듬은 영상 내 윤곽선과 같은 세부 정보를 보존시키고 빛의 밝기 조절을 통해 주관적 화질을 향상시켰다. 실험 결과를 통해 기존 알고리듬에 비해 제안한 알고리듬이 우수한 성능을 나타내는 것을 확인하였다.