• 한국의류산업학회지
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• 제5권4호
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• pp.379-388
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• 2003

The purpose of this study was to compare the somatometric characteristics obtained from the factor scores of both upper and lower body by regional differences. The sample group was drawn from boys at the ages 7 to 12 living in Pusan and Kyungsangnam-do. Data from each boy comprised 57 anthropometric measurements and 11 photographic measurements. The study reached following conclusions. 1. According to the result of factor analysis, five indicative factor's were obtained from the upper body measurements and four indicative factors were obtained from the lower body measurements. 2. According to the comparision of factor scores on measurements of the upper body between Pusan and Kyungsangnam-do, there were differences in all five factors. Boys in Pusan had higher stature, bigger frame, more protruded chest and shoulder blades, more sloping curve along with the backbone, more protruded belly, narrower and sloping shoulders than boys in Kyungsangnam-do. 4. According to the comparision of factor scores on measurements of the lower body between Pusan and Kyungsangnam-do, there were differences in factor 1 and factor 4. Boys in Pusan had bigger frame and flatter hip than boys in Kyungsangnam-do.

• 한국소음진동공학회논문집
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• 제25권3호
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• pp.169-175
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• 2015

This study aims to improve the dynamic stiffness of an inspection robot frame to prevent derailment from transmission lines. Finite element models for the transmission lines and robot frame are developed for the multi-body dynamic simulation. Natural frequency analysis was conducted using the FE models. Three types of spacer damper clamps installed on 4-conductor transmission lines are used to evaluate the derailment of the robot. Multi-body dynamic simulations with FE models are demonstrated for sub-span oscillation. When the robot operates, derailment of inspection robot from the transmission lines is determined because of resonance. To prevent the resonance, body position was changed and thickness optimization was conducted. The results show that derailment was not occurred because of the natural frequency improvement.

• 한국의류산업학회지
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• 제4권1호
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• pp.64-70
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• 2002

The purpose of this study is to know the change of somatic characteristics according to the time. To find out the change of body type of the early twenties who were in 1990 and 1999, the anthropometric and the photographic measurements of the two periods were compared respectively. T-test was applied and the figure of body frame and lateral body type were analyzed. By comparing the anthropomentric measurements of 1999 with 1990, it was known that the proportion of lower half of body increased and the legs and arms became longer. The shape of bust was slightly centered and the angle of shoulder decreased. From the analysis of the photographic measurements and the comparison the body type of 1999 with that of 1990, the tendency of change in upper body was to bend backward and the ratio of straight type increased in 1999.

• 동력기계공학회지
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• 제6권3호
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• pp.57-63
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• 2002

This paper describes the acoustic analysis of mid duty truck. The focus of the analysis is on structure borne engine noise with major contributions of 2nd order. It has been previously recognized that the noise contribution of each transfer path of structure borne noise can be varied with the charateristics of each mounts and vibro acoustic sensitivity of car body. The structure of car body will be split up into three major sub components, which are modeled separately, the engine, the frame and the cab. The acoustic performance is evaluated on three levels: engine to frame transfer, frame to cab transfer, and panel contribution from cab to driver. In order to perform these analyses, analytical models are created for the engine, frame, cab and acoustic cavity. The models are linked through a coupled fluid structure calculation, and through FRF Based Substructuring for the structural couplings. Based on the structural coupling calculations, a transfer path analysis is performed to identify the most important transfer paths. These paths are then the focussing points for applying modifications to the structure or the mount system. Finally, a number of modification are proposed and their effect is quantified.

• Journal of Electrical Engineering and Technology
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• 제11권1호
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• pp.234-240
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• 2016

We propose a novel framework for markerless camera-based games. By using a visual camera, our method may yield robust human body segmentation with high performance comparable to the segmentation using depth cameras. The edges of human bodies are detected by subtracting gradient backgrounds, and human body regions are segmented by the operations based on mathematical morphology. Collisions between detected regions and virtual objects are determined by finding the colliding time using intra-frame positions of virtual objects. Experimental results show that the proposed method may produce robust segmentation of human bodies, thereby and the collision responses are more accurate than previous methods. Therefore, the proposed framework can be widely used in camera-based games requiring high performance.

• 정신신체의학
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• 제22권2호
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• pp.55-62
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• 2014

마음과 몸의 관계는 오랜 논의에도 불구하고 설득력 있는 답을 구하지 못하고 있다. 한편, 서구 의학이 유물론적 패러다임을 받아들이면서, 기질적 이상이 없는 증상들은 "의학적으로 설명되지 않는 증상"이라 하여 변방에 머물게 된다. 이러한 증상을 이해하고자 전문가들은 마음과 몸의 관계를 바탕으로 소위 정신신체의학이라는 해석의 틀을 내놓았다. 이 해석의 틀은 의사소통 방식뿐 아니라, 환자들의 건강추구 행위 및 증상을 경험하는 양식도 변화시켰다. 시대의 필요나 새로운 과학발견에 의해 해석의 틀은 변화되어 왔으며, 어떤 때는 마음이 어떤 때는 몸이 강조되었다. 특히 치료법이 부재할 때에는 마음이 강조되면서 환자의 인격이 비난 받거나, 환자의 책임이 더 강조되었다. 반면 약물치료가 등장한 후에는 마음을 강조할 필요성이 줄어들면서 환자의 책임 역시 면제되었다. 본 논고에서는 마음과 몸의 관계를 중심으로 해석의 틀이 어떻게 시대에 따라 변화했는지를, 두통과 편두통의 사례를 통해 살펴보고자 한다. 이를 통해 해석의 틀이 어떻게 증상을 경험하는 양상을 변화시켰으며, 그때마다 책임 소재가 어떻게 달라졌는지 고찰할 것이다. 이러한 통시적 고찰은, 전문가로 하여금 그들이 만들어내는 해석의 틀이 얼마나 큰 영향력을 가지는 지, 그것이 얼마나 시대 상황과 밀접한 관계를 맺는지를 고찰할 기회를 마련할 것이다.

• 한국산학기술학회논문지
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• 제14권1호
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• pp.57-62
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• 2013

카트 차체에는 현가장치와 차동장치가 존재하지 않으므로 카트주행 중 발생하는 프레임의 변형은 탄성변형으로 인한 주행성능과 프레임의 피로수명에 영향을 미친다. 선회주행 시 비틀림 변형에 의한 카트의 거동은 이 두 가지 변형에 결정적 원인을 제공한다. 이러한 곡선구간에서 카트의 동적 거동을 분석하기 위하여 GPS를 이용하여 차량의 궤적을 추적하고 카트 프레임 강에 작용하는 비틀림 응력을 측정하였다. 레저와 레이싱 카트 프레임의 기계적 성질을 파악하기 위해 재질 분석과 인장시험을 실시하여 각 프레임의 재료 특성을 분석하였다. 비틀림 응력집중과 프레임 비틀림은 프레임 해석을 통해 조사되었다. 또한 주행 분석 장치를 이용하여 레저와 레이싱 카트를 각 조건별로 실차실험을 수행하였고, 이를 통해 곡선구간에서 카트의 주행거동을 분석하였다. 선회주행 시 차량에 원심력에 의한 하중이동의 현상이 발생했으며, 이로 인해 카트 프레임 강에 비틀림 응력이 발생하였다.

• 한국자동차공학회논문집
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• 제19권5호
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• pp.113-117
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• 2011

The frame for automotive assembly can be deformed and remained on the residual stress due to high temperature thermal attacks when in welding. The frame deformation can be made to problems when in assembly with body and the residual stress can affect the negative effect on durability performance of the automobile. In order to analyze the frame deformation, the simplified test frame which had the similar shape (form) of the real automotive frame was fabricated. The contactless optical 3D scanner was used for the shape difference measurement of the frame between before and after the welding. The FE-model of the test frame was composed and the heat transfer and thermal stress simulation were performed. The simulated results were compared with the measured results for the reference of the frame design. The deformation shape of the frame by simulation was in good agreement with that by the experimental measurement.

• 드라이브 ㆍ 컨트롤
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• 제11권4호
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• pp.46-52
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• 2014

This study suggests a small-sized screw decanter specialized for dredging sites. Generally, conventional screw decanters are composed of a cylinder and a cone. However, the suggested screw decanter simply has a cone based on a cone-type bowl structure. In this research, a commercial analysis tool is used to establish an optimal design for the bowl and the screw conveyor. Moreover, the base frame, where the main bearings that support the spindle of the bowl and the screw conveyor are installed, is optimally designed considering the weight of the rotating body and the deflection caused by the high centrifugal force. Furthermore, the natural frequency range of the spinning body, the bowl and the screw conveyor, is applied to this base frame; it is designed not to correspond to the resonance frequency range and achieves stability as a result. This study suggests an optimal design for the rotating body and the base frame of a screw decanter considering its vibration characteristics. Such a design will prevent overuse of materials and help to reduce the weight and volume-and the price-of a screw decanter.

• 한국인터넷방송통신학회논문지
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• 제11권6호
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• pp.49-56
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• 2011

오늘날 자전거는 레저용으로 각 회사에서 다양화되고 있다. 각 자전거 메이커로부터 다품종의 자전거가 판매되고 있지만, 구매자가 그 중에서 자신의 신체에 적합한 자전거의 정보를 얻는 것은 쉬운 것은 아니다. 따라서 대부분 구매자의 신체치수를 이용하여 자전거를 구매하고 있다. 이와 같은 방법을 이용하는 것은 표준 신체치수에 의하여 자전거의 치수를 결정하는 방법이다. 그러나 이 방법에 의하여 자전거를 구입하였을 경우 구매자의 신체에 적합한 자전거라고 볼 수가 없다. 본 연구에서는 구매자가 직접 본인의 신체에 맞도록 최적 설계시스템을 조절하여 자전거를 설계한다. 그리고 퍼지제어기를 이용한 주행 시험 장치에서 주행시험을 한다. 그 결과를 이용하여 구매자의 신체에 적합한 자전거인가를 판단할 수 있는 최적 자전거 설계시스템을 연구한 것이다.