運動選手의 課題遂行 結果에 對한 歸因 分析

張瑞鎭 호남대학교 1990 호남대학교 학술논문집 Vol.11 No.2

The purpose of this study is to analyze the differences of locus of control athletes according to their Sex and individual or group entris. The major findings of this study are as follows : ㆍWhen they wins 1. The male athletes have inclination of the interval attribution, and especially they think that the winning result from effort. 2. The female athletes have inclination of the interval attribution, but they under estimate the influence of their abilties. 3. The athlete on occations of indivicual entries have inclination of the interval attribution, and they have the strong faile that the winning is result from effort, but ability. 4. The athlete on occation of group entries have inclination of the interval attribution, and they conceive that the winning is influenced by effort. ㆍWhen they less 1. The male athlete have the inclination of interval and attribution, but more interval attribution. 2. The female athlete have the inclination of the interval attribution. 3. The athlete on occation of individual entries have inclination of the interval attribution. 4. The athlete on occations of group entries have inclination of the interval attribution, and they conceive that the loss result from their inabilities and their rirals' strgng power.

배드민턴 運動이 健康에 미치는 影響

張瑞鎭 호남대학교 1993 호남대학교 학술논문집 Vol.14 No.-

This Study is to make aneestimation of the effect of Badminton exercises on on the improvement of health of 250 club members hwo are practising exercises regulacly. 1) About the half of the pollee anewered that they had Started to play badminton from the motives of improving their health, which shows that the problem of the lack of exercises is going of bring about the serious health Unbalance in modern society. 2) About 6 or so of pollee answered that they were playing Badminton five or six times a week and 29.2% of than used to play badminton for about an hour, 25.6% about 50minutes and and20.0% about 70minutes which shows that to play badmintion as the club exercises for about an how every day is abequate for improving health. 3) Before their badminton practices, a total of about 90% of pollees felt that they had hard time in their body movements deriving from ailments or bad physical conditions such as mental stress, lumbago, chronic fatigue and circulatory diseases. But The percent dropped to nearly 40% by solving the problem of the lack of exercise through badminton playing. 4) While 12.6% answered that they had been Weak before the badminton exercise, only 1.3% said they are in infirmity after. The fact shows badmintor practice has a great effect on the improvement of physical conditions. 5) On the ailment prevention after starting the practice, 92.4% of pollees said they experienced the effect contrary to 7.6% no experiences and by playing badminton periodically, the conflict among family reduced 92% to 41.6%. 6) On the phenomenon of lack of exercise before the launching of badninton practice, 98% experienced the phenomenon. But 99.6% went through the impact of badminton exercise later. This leads to a conclusion that in fact psychological phenomenon played a great role in influence on working out the lack of exercise.

Tenax-GC를 利用한 大豆乳와 醱酵大豆乳의 風味成分 分析

愼重燁,李瑞九,金顯五,朴啓仁 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

Soy milk prepared from soy protein isolate and soy milk fermented with Lactobacillus acidophilus were adsorbed and desorbed by using Tenax-GC method and analyzed by Gas Chromatograph. It was found that this techingue was very efficient when the analytical results was expressed by the ratis of the peak area of each volatile to that of a fixed concentration of internal standard. Acetaldehyde, ethyl vinyl ketone, n-hexanal, n-hexanol, and 1 -octen-3-ol existed in soy milk. The content of acetaldehyde and diacetyl was increased while that of n-hexanal was reduced by lactic fermentation.

Development of a Numerical Methodology for Analysis and Design of Weldments

Sur, Ukhwan The Korean Society of Mechanical Engineers 2001 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.15 No.4

There are many analysis formulas for determining the resultant shear force in welds. However, there is no general procedure which is applicable to a joint with all six possible loadings exerted simultaneously. A numerical methodology and computer program for such a problem were developed, and they are capable of analyzing a weld of any shape composed of straight or circular line segments. The computer program developed in this study can also display the design procedures and results using computer graphics. The development of such a design procedure and an interactive computer program for weldments analysis will lead to lower cost.

Fracture-mechanical Modeling of Tool Wear by Finite Element Analysis

Sur, Ukhwan,Lee, Yeongseop 한국안전학회 2004 한국안전학회지 Vol.19 No.4

마모구조는 대략적으로 기계, 화학 빛 열적 마모 등으로 구분되어 진다. 평면변형 유한요소법이 지속적인 칩 형성을 갖는 대각선 가공을 시물레이션하기 위하여 새로운 재료의 응력 및 온도 필드와 같이 사용되었다. 작업소재의 변형은 등방성 변형 경화를 갖는 탄성-점소성으로 취급되며, 수치해석의 해는 소성 변형과 온포 필드의 결합을 설명하며, 온도 종속적인 재료 물성치로 취급된다. 이 논문에서 개발된 모델에서는 전단영역 주위의 변형률, 응력 및 온도 분포에 대한 추성모델의 불확실성의 영향들을 보여주며 예측된 전단영역의 응력, 변형률 및 온도의 평균값들은 기존의 실험 치와 비교해서 잘맞는 것으로 사료된다. Wear mechanisms may be briefly classified by mechanical, chemical and thermal wear. A plane strain finite element method is used with a new material stress and temperature fields to simulate orthogonal machining with continuous chip formation. Deformation of the workpiece material is treated as elastic-viscoplastic with isotropic strain hardening, and the numerical solution accounts for coupling between plastic deformation and the temperature field, including treatment of temperature-dependent material properties. Effects of the uncertainty in the constitutive model on the distributions of strain, stress and temperature around the shear zone are presented, and the model is validated by comparing average values of the predicted stress, strain, and temperature at the shear zone with experimental results.

Clay를 함유한 펙틴/전분 나노복합체의 기계적 물성 및 가스 투과도

서석훈,홍경민,신용섭,김성보,서길수,신부영 한국공업화학회 2002 응용화학 Vol.6 No.2

Mechanical properties and gas permeability of biodegradable Pectin/Starchmontmorillonite clay (filler) have been studied. Tensile strength and modulus was increased as the increasing content of montmorillonite. X-ray diffraction was used to assess the periodic distance of the clay layers and transmission electron microscopy was used to to observe the composite morphology. The periodic distance of the stacks was 21.76∼26.12 Å for the processed composites. Thus suggests that the layers of the clay particles have been intercalated. Oxygen permeability of pectin/starch-clay composites was generally lower than that of plastic films.

Microscopic Sturdies of Crystallography in Sulphospinel Fe_(1+x)Cr_(2-x)S_4

Sur, Jung Chul,Kim, Kyung Ha 圓光大學校 基礎自然科學硏究所 1989 基礎科學硏究誌 Vol.8 No.1

Fe_(1+x)Cr_(2-x)S_4의 결정구조를 X-선 분석기와 Mo¨ssbauer 분광기를 사용하여 미시적으로 연구하였다.결정구조는 모두 입방 spinel 구조이고 결정상수 a_0는 x에 따라 9.996-9.983Å의 값을 가지고 있는 것으로 나타났다. Fe 이온은 +2가인 경우 모두 사면체 자리에 존재하며 +3가인 경우는 팔면체 자리에만 존재하는 것으로 밝혀졌다. 또한 저온에서는 비대칭적인 Mo¨ssbauer 선폭의 증가가 일어나는 것으로 보아 Jhan-Teller distortion이 존재함을 알 수 있다.

A Fair and Reliable P2P E-Commerce Model Based on Collaboration with Distributed Peers

Sur, C.,Jung, J. W.,Yang, J.-P.,Rhee, K. H. SPRINGER-VERLAG 2005 Lecture Notes in Computer Science Vol.3741 No.-

An efficient and secure navigation protocol based on vehicular cloud

Sur, Chul,Park, Youngho,Rhee, Kyung Hyune Taylor Francis 2016 International journal of computer mathematics Vol.93 No.2

<P>Vehicular cloud is the new paradigm of vehicular ad hoc networks (VANETs), which not only takes the recent advance of vehicular technology, but also keeps up with the trend of cloud computing for big data processing and complicated intelligent analysis over VANET environments. In this paper, we present a model for secure navigation systems based on vehicular cloud, which fully utilizes the advantages of cloud computing. In particular, we make up for the limitations of prior VANET-based secure navigation protocols and provide a stronger notion of security for secure navigation services in terms of insider threats and data leakage points of view. We propose a new secure and privacy-preserving navigation protocol based on vehicular cloud, which resolves the limitations of previous approaches. Moreover, the proposed protocol is highly efficient because it does not rely on bilinear pairing operations unlike prior secure navigation protocols in the literature. We demonstrate comprehensive analysis to confirm the fulfilment of the security objectives and the efficiency of the proposed protocol.</P>

전분/펙틴/몬모릴로나이트 나노복합 필름의 특성 및 산소 투과도 연구

서석훈,서길수,유성구,신용섭,정세환,김성철,배광수,이태진,장상희,신부영 한국공업화학회 2003 공업화학 Vol.14 No.8

Na^(+)-MMT로부터 제조한 생분해성 전분/펙틴/몬모릴로나이트 나노복합재료의 기계적 특성, 열적 특성, 그리고 산소 투과성을 연구하였다. XRD와 TEM의 결과로부터 고분자의 삽입으로 인하여 실리케이트 층간 간격이 증가하였으며, 또한 삽입형 전분/펙틴/몬모릴로나이트 나노복합재료임을 확인하였다. 합성된 전분/펙틴/몬모릴로나이트 나노복합재료의 경우 적은 양의 MMT로부터 기계적 특성과 열적 안정성이 우수함을 보였다. 그리고 전분/펙틴/몬모릴로나이트 나노복합재료의 산소 투과성은 고분자 매트릭스에 분산되어 있는 몬모릴로나이트에 의하여 현저히 저하됨을 보여주었다. Mechanical property. thermal property. and oxygen permeability of biodegradable Pectin/Starch-montmorillonite nanocomposite, prepared with Na-MMT, have been studied X-ray diffraction and TEM experiments on polymer/silicate composite samples demonstrated that the intercalation of polymer chains leads to increase in the spacing between silicate layers. In addition, it were found that the intercalated Starch/Pectin/monotmorillonite nanocomposite were prepared. It was found that the addition of only a small amount of clay was enough to improve the thermal stability- and mechanical property of Starch/Pectin/montmorillonite nanocomposite. Oxygen permeability of Starch/Pectin/montmorillonite composite was generally lower than that of pectin/starch.