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.

Phytoceramide Alleviates the Carrageenan/Kaolin-Induced Arthritic Symptoms by Modulation of Inflammation

Sur Bongjun,Kim Mijin,Villa Thea,Oh Seikwan 한국응용약물학회 2023 Biomolecules & Therapeutics(구 응용약물학회지) Vol.31 No.5

Phytoceramide (Pcer) is found mainly in plants and yeast. It can be neuroprotective and immunostimulatory on various cell types. In this study, the therapeutic effect of Pcer was explored using the carrageenan/kaolin (C/K)-induced arthritis rat model and fibroblast-like synoviocytes (FLS). Pcer treatment (1, 10, and 30 mg/kg/day) were given to the arthritic rats for 6 days after disease induction. Weight distribution ration (WDR), knee thickness, squeaking score, serum levels of proinflammatory mediators, and histological analysis were measured and performed to evaluate arthritic symptoms in the rat model. In interleukin (IL)‑1β‑stimulated FLS, proinflammatory mediators were measured after Pcer (1-30 μM) treatment. Arthritic symptoms in rats with Pcer treatment were significantly decreased at days 4 to 6 after C/K arthritis induction. Inflammation in the knee joints were also significantly decreased in rats with Pcer treatment. Furthermore, in IL-1β‑stimulated FLS, the expressions of proinflammatory mediators were also inhibited by Pcer. As shown by the results, Pcer has anti-arthritic effects in the C/K rat model and in synovial cells, suggesting that Pcer has the potential to be a useful agent in arthritis treatment.

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.

An Efficient Authentication and Simplified Certificate Status Management for Personal Area Networks

Sur, C.,Rhee, K. H. SPRINGER-VERLAG 2006 Lecture Notes in Computer Science Vol.- No.4238

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>

Effects of grape seed proanthocyanidin extract on side effects of high-dose methylprednisolone administration in male rats

Sur Aslihan,Iflazoglu Mutlu Seda,Tatli Seven Pinar,Seven Ismail,Aslan Abdullah,Kizil Meltem,Kulaksiz Recai,Yaranoglu Mustafa Hilmi,Esen Selim 한국독성학회 2023 Toxicological Research Vol.39 No.4

In this study, we investigated the effects of grape seed proanthocyanidin extract (GSPE) against the side effects of highdose administration of methylprednisolone (MP) in male rats. A total of 32 adult Wistar male albino rats were divided into four groups: (1) control (CON), received standard food only; (2) MP, received standard food + intraperitoneal injection of 60 mg/kg MP on day 7; (3) GSPE, received standard food + 200 mg/kg/day GSPE; and (4) MP + GSPE, received standard food + 200 mg/kg/day of GSPE + intraperitoneal injection of 60 mg/kg MP on day 7. All animals in the GSPE and GSPE + MP groups were treated once a day by oral gavage for 14 consecutive days. The feed intake of rats in the MP and MP + GSPE groups decreased significantly by 24.14% and 13.52%, respectively (p < 0.05). Administration of MP resulted in significant increases in serum concentrations of blood urea nitrogen (p < 0.001), glucose (p < 0.01), alkaline phosphatase, and adrenocorticotropic hormone (p < 0.05). High-dose MP administration significantly reduced catalase (p < 0.001) and glutathione peroxidase (p < 0.05) concentrations in the liver and kidney tissues of rats, while glutathione concentrations were only reduced in liver tissue (p < 0.05). The expression levels of Bcl-2 and TNF-α in liver, kidney, and testicular tissue were significantly increased, while the expression levels of caspase-3 were reduced (p < 0.001). Furthermore, sperm concentration was significantly affected by GSPE in rats induced by high-dose MP, and sperm loss was significantly reduced in MP + GSPE (p < 0.05). These findings suggest that GSPE could be useful as a supplement to alleviate MP-induced toxicity in rats.

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.

Synthesis and LCST Behavior of Thermosensitive Poly (N-isopropylacrylamide)-Clay Nanocomposites

Sur, Gilsoo,Lyu, Sung-Gyu,Chang, Jin-Hae 한국공업화학회 2003 Journal of Industrial and Engineering Chemistry Vol.9 No.1

Thermosensitive polymer-clay nanocomposites were prepared via organically modified clay-poly(N-isopropylacrylamide) (PNIPAM) nanocomposites. Nanocomposites containing a 5 wt% montmorillonite exhibited a lower critical solution temperature (LCST) similar to the unmodifed PNIPAM hydrogel, and similar phenomena with a large thermal volumetric change and transition kinetics compared to conventional PNIPAM gels. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) suggested that the clay minerals in the nanocomposite were partially exfoliated in a dried state and mostly exfoliated in a swollen state.