인체 공중 동작 시뮬레이션 프로그램 개발

성낙준,권영후 한국운동역학회 1994 한국운동역학회지 Vol.4 No.2

A comprehensive simulation software package was developed in C base on the work done by Yeadon et al.(1990) and Kwon (1993a) in the aim of making it easy to apply the experimental simulation technigues to the human airborne movement studies. This package consists of 3 programs: simulation variable computation program (PREP), simulation program (SIM) and the 3-dimensional graphic program (3DMAN). All programs are driven by an easy-to-use menu system and written compatible to KWON3D Motion Analysis Package Version 2.1 (Kwon, 1993b). Program PREP consists of 4 menus: `Edit Data´, `Prepare´ `Angular Momentum´ and `Optimization´. The `Edit Data´ environment is an editor for the lengths of the segments and body lines. The `Prepare´ menu computes the internal orientation angles of the segments while the `Angular Momentum´ menu computes the mean airborne angular momentum of the body and other initial conditions such as the initial position and velocity of the body CM and the initial external orientation of the body. The `Optimization´ menu performs angular momentum optimization proposed by Kwon (1993a). A geometric 15-segment body model - Yeadon-Kwon model (Kwon, 1993b) - with at most 38 degrees of freedom including 3 external orientation angles (somersault, inclination and twist angles) was employed to compute the simulation variables. SIM consists of 2 menus: `Edit Angles´ and `Simulate´. The `Edit Angles´ environment is an editor for the internal orientation angles of the segments. Users can intentionally manipulate the internal orientation angles for the simulation of modified trials. The program displays time-angle curves segment by segment. The `Simulate´ menu actually performs simulation. The initial conditions can be directly manipulated in the program menu environment. The simulation program was tested by several theoretical configurations to screen out the flaws in the theory and to isolate coding mistakes. The simulated results were compared with the predicted results and the program showed good agreements between the simulated results and the theoretical predictions. The simulation program was then applied to several gymnastic maneuvers and springboard dives for testing. 3DMAN was developed in the extension of the traditional `Stick Figure´ graphics. The program is segment-oriented and the 3-D shape of each segment is defined defined independently in a graphic model file to allow the users to use different body models with different, combinations of segments. The model file was designed easy to edit so as to allow the users to change the graphic model easily to meet their specific needs. The graphic model file can be edited using any text editor such as `EDIT´ of DOS. Once the `3-D Graphics´ option is activated followed by the registration of the graphic model files, the program draws the 3-D shapes of the segments whose model files are registered. All the graphics-related menus including registration of the segment graphic model files are accessible within the graphic environment.

個人用 컴퓨터를 利用한 水力發電댐의 流入量 豫測

權五憲,李尙和 忠南大學校 産業技術硏究所 1986 산업기술연구논문집 Vol.1 No.2

The main purpose of the study is to develop a computer program in the personal computer which calculates numerically the inflow from the rainfall and displays the inflow hydrograph on a CRT. The computer programs, which were developed for the inflow forecasting of the short-range, employed the storage function method. The program which computes the inflow from the rainfall would be applicable effectively both to planning the daily/weekly power generation and to operating the dam for the flood control. The inflow calculated by the computer program gave a good agreement with the actual inflow for the Choon Chun and the Cheong Pyung dam.

地方都市開發의 轉煥技法에 관한 序說

權尙俊 淸州大學校 1984 論文集 Vol.17 No.2

This study aims at looking into a method having converted urban development in Korea from the concentration policies for the central area into the decentralization for the local for the past 20 years. According to the study the conclusion can be come to the follows. A. The concept of the local urban development can be understood that is a process of the accomplishment of the local urban development policies for regionalism and a means of the ones for regionalization. B. The problems from the local urban development policies are pro-centralized sociality from the citizen consciousness, defects in our legal system for the serious consideration of locality, a top down approached system for the public opinion, negative engagement of local officers, quantitative and qualitative basic needs for the development and insignificant feed back system for the assessment and analysis. C. The directions for the conversion of the development policies are the harmonization of the preceeding conditions for the modification of the national structure for human settlements, the excavation of the practical means for the intensification of the urban function, the reform for the urban structure and function according to the external factors and the achievement of entire linkage for the objective space, time and people. D. The methods converted the urban development into the decentralization policies for the local area are divided into three sides of urban scale, function and location on the local urban development. There are the several factors that the urban development policies have decided from In brief, those are the introducing the funds for the urban development from urban scale, the strengthening the locality and urban structure from urban function and the considering the policies of the management and administration for a broad megalopolis.

양극성장애환자의 정신사회적 스트레스에 관한 연구

권영준,한상우,한선호 순천향대학교 1990 논문집 Vol.13 No.1

The psychosocial stressors experienced in the 6 months prior to the admission were studied in 62(27 male and 35 female) inpatients who mets DSM-Ⅲ criteria for bipolar disorder and were hospitalized in the Neuropsychiatric department of Soonchunhyang University Hospital from January 1987 to August 1989. The results were as follows; 1. Among the 249 cases, 36(58.1%) cases had the psychosocial stressors prior to admission. 2. 40.7% of male cases and 71.4% of female cases had the psychosocial stressors prior to admission. Female cases had significantly higher relation to the psychosocial stressors. 3. By the age variable, there was not significant difference in relation to the psychosocial stressors prior to admission. 4. By the different educational level, there was not significant difference in relation to psychosocial stressors prior to admission. 5. By the occupation variable, there was not significant difference in relation to the psychosocial stressors prior to admission. 6. The frequency of the psychosocial stressors was in the order of occupational problems(36.1%), other interpersonal problems(22.1%), financial problems(11.1%) conjugal problems(11.1%).

淸州圈 開發計劃 樹立의 基本方向에 關한 硏究

權尙俊,金暻浩 淸州大學校 1982 論文集 Vol.15 No.2

Korea has made a remarkable growth of economy with the social and cultural change in the last twenty odd years, developing overally human settlements. But negative factors lay behind the disappearance of the growth, regarded in relation to regional development. Those have occurred the disparities of regional growth and income between one region and others, the negligence of regional marginal resources, the development disregarded environmental pollution and the development policies for efficiency rather than creation for comfortable settlements. That is not excepting Cheong-ju region. The object of this study shall be to improve the inhabitant living environment not only laying stress on the traditional culture, but also inducing the external and internal development for Cheongju region and to promote the development for the periphery spreaded the extending effects into integrating human settlements. This study sets limits to theoretical approach and planning for the regional development in contents, the affective region centering around the urban planning area for Cheong ju city in space and the year's 2000 in time. If the regional development planning are continuously established in the existing same way as the first program for land development (1972~1981), there must be occurred the disparities among the regions, the inefficiency and accountability of allocation of resources, the negligence of traditions and the passive participation in the regional development planning. Therefore, the planning must require further examination for human settlements, environmental pollution and economical activities and give serious consideration of regional planning to settlement planning and conservation for environment. The background of Cheongju region shows briefly that the region has a population of about one million and Cheong-ju city has about 253 thousands in 1980. The population of the region in 2000 is expected to be about one and half million and Cheongju city is expected to have 550 thousands within and beyond the limits of 10% or so. The regional growth potentialities about the social and cultural, industrial lecational and centralizational sides are greater than the other region. The traditions worth conserving are the system of open spaces at the city, cultural assets, inheritant temper and the educational and cultural function of the city. Firstly, the regional development planning must establish the policies that make Cheongju city a growth pole of the region; inducing the basic industries concerned with the educational and cultural city function, expanding the utilities, especially roads, between the city and the peripheries, improving on the level of services from the city and creating comfortable cityscape by way of urban design. Secondly, the regional development planning must be based on the human settlement planning; diversifing the allocation of inhabitant population with diverse density, allocating the basic civil facilities, especially schools and cultural ones, allocating resources on a spatial as well as sectoral basis, with a view to improving efficiency and accountability and completing the self-sufficiency within the region and inducing positive investment for the development with the citizen participation. Thirdly, the planning must have harmonization between conservation of tradition and innovative development. In order to maximize the efficiency of the planning, the region area can be divided into three zones; the core of the city, inner ring area and periphery. The conservation is prior to all other strategies in the core of the city, the city central function allocated and the accessibility rasied up. There are the policies to harmonize the conservation and innovation, to offer the public services to the inhabitants and maintain open spaces by way of a sectoral system in the inner ring area. The development policies in the periphery are to maintain developing space as well as reserving area. This study can have brought to the conclusion that Cheongju region hays to develop by way of making Cheongju city a growth pole of the region endowed with educational and cultural functions as well as one cored system of land use.

Polyphenol류의 항산화성 및 항돌연변이성에 관한 연구

권태영,김상엽 전주대학교 자연과학종합연구소 1997 전주대학교 자연과학연구소 학술논문집 Vol.10 No.3

Total and free phenolics contents, nitrite scavenging activity of fruits and vegetables(30 kinds) were investgated, Total content were 100-400mg% level, but the nitrite scavenging acitivity was not correlated with phenolics content. Also, 26 synthetic phenolics were investigated to relationship of chemical structure between antioxidantal activity by nitrite scavenging method, and antimutagenic capacity. Increasing of hydroxyl group number was enhanced activity, and meta substitution had highest activity than ortho- or para substituents.

Fibrin Scalant 를 사용한 골자가이식에서 혈관신생에 관한 실험적 연구

권성택,김병건,김진환 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

The effect of fibrin to wound healing has been studied and well documented : homostatic and adhesive effect and stimulatory effect on proliferation of fibroblast, formation of granulation tissue and neovascularization has been well known. In the process of bone healing, action of fibrin has been reported to stimulate the formation of granulation tissue, new vessels and new bone, but there have been many reports contrary to the effects of fibrin. Authors used New Zealand white rabbit as an experimental animal. Bone grafts were harvested from right and left parietal bone and onlay grafts were performed to both sides of frontal bone. Fibrin sealant was applied to experimental group and was not applied on the control group. Both groups were sacrificed after 1, 2, 3, 4, and 8 weeks respectively and results were examined and compared after H&E stain and Masson's trichrome stain by light microscope. The group using fibrin sealant showed new bone formation on 1st week and new vessel formation on 2nd week, and vessels were numerous and had thick walls. And there were dense bony connections between donor bone and recipient bone. In calvarial bone graft which is most commonly used in plastic and reconstructive surgery, especially in infected and extensively injured wound which might compromise blood supply, we believe that bone graft using fibrin sealant can stimulate vascularization and new bone formation and therefore enhance the survival of bone graft.

실내공간계획에 있어서 환경심리행태론적 접근에 관한 연구

권성진,차소란 서라벌대학 2001 논문집 Vol.20 No.-

Chloroform 용매 중에서 Aniline과 Iodine간의 Charge Transfer Complex 형성 Mechanism에 대한 연구

권오윤,崔相元,金南政 여수대학교 1989 論文集 Vol.3 No.-

The formation of charge transfer complex between indine and aniline in chloroform solvent have been studied kinetically by using conductivity method. The initially formed outer charge transfer complex was transformed into a inner charge transfer complex. The pseudo first order rate constants and aitivation entropy are affected by aniline concentration. The second order rate constants for the decomposition of the outer charge transfer complex(first order in aniline and in the outer charge transfer complex) depend on the aniline concentration. The ease with which the transformation proceeds depends on the relative magnitudes of the enthalpy of formation of the outer charge transfer complex as well as dielectric properties of aniline.

유치 수복물에 따른 주변 법랑질의 탈회 저항성 : QLF를 이용한 연구

권해숙,현홍근,김영재,김정욱,장기택,김종철,한세현,이상훈 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

본 연구에서는 유치 수복물의 불소 방출 여부에 따른 주변 법랑질의 탈회 저항성과 재광화 효과를 살펴보고자 하였다. 건전 유전치 48개를 16개씩 임의로 세 군으로 나누어, FiltekTM Z250(1군), F2000(2군), KetacTM N100(3군)을 사용하여 제조사의 지시에 따라 충전하였다. 3일 동안 인공 우식 병소를 유발한 후, 14일 동안 인공 타액에 담가 재광화를 유발하였다. Quantitative light-induced fluorescence(QLF)를 이용하여 실험 단계와 시간에 따른 무기질 소실량(ΔQ)의 변화를 관찰한 결과는 다음과 같다. 1. 탈회가 일어난 인공 우식 병소의 ΔQ 값은 3군, 2군, 1군 순으로 작게 나타났고, 이 중 3군은 1군에 비해 유의한 탈회 저항성을 보였다. 2. 1군, 2군, 3군 모두 재광화 1일 후부터 초기 인공 우식 병소의 ΔQ 값과 비교 시 유의한 차를 보였으며, 관찰 기간 동안 지속적인 증가 양상을 나타내었다. 3. 재광화 속도를 의미하는 Δ(ΔQ)/일 값은 각 군에서 처음 1일 동안 유의성 있게 크게 나타났으며, 그 이후 급속히 감소하였다. 4. 수복 재료에 따른 재광화 정도는 각 군 간에 유의한 차이가 없었다. The objective of this in vitro study was to detect and monitor demineralization and remineralization of primary teeth according to restorative materials using quantitative light-induced fluorescence (QLF). A single bur hole was drilled on the each sound forty eight primary anterior teeth, and the specimens were divided into three groups. The cavity was restored with FiltekTM Z250(Group 1), F2000(Group 2), KetacTM N100(Group 3) following the manufacturer's instructions. The teeth were subjected to the demineralizing buffer for 3 days, and then subjected to a remineralizing buffer for 14 days. The change of mineral loss(ΔQ) according to the stages was evaluated by QLF and the following results were obtained: 1. When demineralization was done, ΔQ was increased as follows. : Group 1 (-110.79 ± 27.77) < Group 2 (-104.84 ± 28.95) < Group 3 (-90.16 ± 21.87) : Resistance to demineralization was statistically significant in Group 3. 2. There was a statistically significant increase in ΔQ of all groups since 1st day of remineralization 3. The rate of remineralization, Δ(ΔQ)/day, showed significant high value in each group on the 1st day then decreased rapidly. 4. There was no statistically significant difference in the degree of remineralization among restorative materials.