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.

일반 교육-특수교육 완전 통합을 위한 기초 연구 : 탐구조사 An Exploratory Study

권상혁,황윤한 국립특수교육원 1995 특수교육연구 Vol.2 No.-

Total integration is the most ethical and humanistic way of teaching exceptional children. The purpose of this study were 1) to examine the problems in special education, 2) to investigate the reasons for being unable to integrate exceptional children with their non-handicapped peers, and 3) to obtain suggestions to accentuate total integration recommended by special education teachers. Thirty-seven elementary school special education teachers participated in this study. Problems in special education practice pointed by special education teachers vary from the lack of perceptions of educational leaders, teachers, students, and students to the education of quality special education teachers. Reasons for being unable to integrate exceptional children with their non-handicapped peers were also related to the problems in current special education culture. Special education teachers suggested various ways to accentuate total integration.

금융시장활성화를 위한 현안과 대책

권영준,박상수 경희대학교 사회과학대학 2000 社會 科學 論叢 Vol.18 No.-

국내산 잣나무와 낙엽송의 재질

권성민,황원중,권구중,김남훈 江原大學校 森林科學硏究所 2004 Journal of Forest Science Vol.20 No.-

국산 잣나무와 낙엽송의 비중, 연륜폭, 만재율, 종압축강도, 횡압축강도 및 전단강도를 측정하고 방사 ?향의 병이를 조사하여 다음의 결과를 얻었다. 1) 비중은 잣나무가 0.48로 낙엽송의 0.88보다 약 2배정도 낮은 값을 보였다. 두 수종 모두 수심에서 낮은 값을 보여주고 그 후 약 15연륜 까지 다소 증가하다가 일정해지는 경향을 보여주었다. 2) 연륜폭은 잣나무 3.43㎜, 낙엽송 2.83㎜로 잣나무가 낙엽송에 비해 넓었으며, 만재율은 잣나무 30%, 낙엽송 47%로 낙엽송이 잣나무에 비해 높았다. 두 수종 모두 만재율이 커짐에 따라 비중은 커지는 경향을 나타냈다. 3) 종압축강도와 종압축 비례한도, 종압축 영계수는 잣나무가 각각 300kgf/㎠, 270kgf/㎠, 9.2×10³kgf/㎠로서 낙엽송의 600kgf/㎠, 550kgf/㎠, 20×10³kgf/㎠에 비해 모두 낮은 수치를 나타내었다. 종압축강도, 종압축 비례한도 및 영계수의 방사방향변이는 두 수종 모두 뚜렷한 경향을 보이지 않았다. 4) 방사단면의 전단강도는 잣나무가 51kgf/㎠, 낙엽송이 69kgf/㎠으로 낙엽송이 컸으며, 접선단면은 잣나무가 56kgf/㎠, 낙엽송이 86kgf/㎠으로 낙엽송이 큰 값을 나타내었다. Density, annual ring width, latewood percentage and compressive properties of Pinus koraiensis and Larix kaempferi grown in Research Forest of Kangwon National University were measured and their radial variations were investigated. Density(Wa/Va) of Pinus koraiensis and Larix kaempferi was 0.48g/cm² and 0.88g/cm², respectively. Density of both species was slightly lower at pith area, increased gradually with cambial age up to about 15 years and then became constant. Annual ring width of both species was 3.43㎜ and 2.83㎜, respectively. Annual ring width of both species was irregular at pith area but regular after about 20 years. Latewood percentage of both species was 30% and 47%, respectively. Latewood percentage of Pinus koraiensis and Larix kaempferi increased with cambial age up to 14 years and 10 years, respectively and then became constant. Compressive strength, proportional limit and Young's modulus parallel to the grain of Pinus koraiensis were 330 kgf/cm², 270 kgf/cm² and 9.2×10³ kgf/cm², and those of Larix kaempferi were 600 kgf/cm², 550 kgf/cm² and 20×10³ kgf/cm², respectively. Shearing strength in radial direction of Pinus koraiensis and Larix kaempferi was 51 kgf/cm² and 69 kgf/cm², and that of tangential direction was 56 kgf/cm² and 86 kgf/cm², respectively. In this study, compressive and shearing properties of both species did not show any significant differences between juvenile wood and adult wood. Both species showed significant differences in the measured values.

PDP용 유전체의 반사특성과 유전특성

권순석,김명녕,이상래,황문구 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

이 논문에서는 P₂O_(5)-ZnO-BaO계와 SiO₂-ZnO-B₂O₃계의 반사특성과 유전특성이 연구 되었다. P₂O_(5)-ZnO-BaO계의 반사율은 SiO₂-ZnO- B₂O₃계의 반사율보다 낮게 나타났고, TiO₂의 함유량이 증가할수록 반사율이 감소되었다. 또한 P₂O_(5)-ZnO-BaO계의 유전율은 SiO₂-ZnO-B₂O₃계의 유전율보다 높은 값을 보였고, TiO₂ 함유량이 증가함에 따라 두 계 모두 유전율이 증가되었다. 이 현상은 공간전하효과로 설명될 수 있다. 본 연구의 결과는 높은 반사율과 높은 절연파괴 강도가 요구되는 플라즈마 디스플레이(PDP)의 하판 유전체, 또는 플라즈마 현상을 응용하는 조명 및 광고용 기구의 반사 유전체로서 응용이 가능할 것으로 기대된다. In this paper, the reflectance and the dielectric characteristics for P₂O_(5)-ZnO-BaO system and SiO₂-ZnO-B₂O₃ system have been investigated as a function of contents of TiO₂. The reflectance was decreased with increasing the contents of TiO₂ contents, and the reflectance of P₂O_(5)-ZnO-BaO system was lower than that of SiO₂-ZnO-B₂O₃ system. The dielectric constant of P₂O_(5)-ZnO-BaO system was higher than SiO₂-ZnO-B₂O₃ system, and the dielectric constant in the both system was increased with increasing of TiO₂ contents. This could be explained as the space charge effects. These results are could be applied to the under plate dielectrics of PDP required high reflective ratio and breakdown strength.

고정도 DC전원을 갖는 UPS용 단상 컨버어터에 관한 연구

권순재,박성준 釜慶大學校 1997 釜慶大學校 論文集 Vol.2 No.2

Many new electronic products and devices are required to have a mear unity power factor and a distortion free current input waveform. A single phase PWMcomverter has a output voltage ripple higher than it in three ahase PWM converter. In this paper, a single phase AC-DC full-bidge PWM converther operating as UPS is proposed which has a unity power factor and ripple compensation. The control algorithm, continuous input current. The simulation and exprementation results are included to verify the validity of this approach

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.

자동차 충격흡수장치의 검사 자동화를 위한 컴퓨터 시각장치의 개발에 관한 연구

권기룡,김상규 부산 외국어 대학교 1996 外大論叢 Vol.15 No.1

본 논문에서는 컴퓨터 시각장치를 이용한 자동차 충격흡수장치의 제조공정 검사자동화 기술에 대하여 연구개발을 하였다. 자동차 충격흡수장치에서 분말야금공정의 검사자동차 기술에 사용한 기법은 영상처리 기법을 이용하였다. 자동차용 충격흡수장치의 검사자동차 기술의 공정은 부품공급장치, 단차검사장치, 시각검사장치, 불량품 추출장치, 수량검사장치 및 양품적재장치로 구성되어 있다. 분말야금공정의 검사자동화장치를 컴퓨터 시각장치로 사용함으로써 작업의 질과 능률이 향상되어 또한 작업량을 감소시킬 수 있다. This paper is concerned with automatic inspection of the automobile shock absorbers on the manufacturing process. Computer vision system is introduced by automatic inspection method of production of the automobile shock absorbers. The automatic inspection system consisits of a feeding unit, a slot inspection unit, a vision inspection unit, a volume counter unit, a inferior goods extractor unit. As it was introduced to powder metallurgial process of the automobile shock absorbers, we can reduce quantity of work and increase efficiency of operation.

물류분야 교육과 인적자원 개발의 방향

권오경,김상우 한국로지스틱스학회 2002 로지스틱스연구 Vol.10 No.2

기업활동의 글로벌화 진전과 국제물류 활동의 증가, 공급사슬관리(SCM) 전략의 도입, 물류아웃소싱의 확산, 물류분야의 정보기술 활용 증대 등 새로운 물류전략의 전개에 따라 이를 효과적으로 수행할 수 있는 지식역량의 증대와 전문인력의 육성이 요구되고 있다. 또한 최근 정부가 추진하고 있는 동북아 비즈니스 중심국가 전략의 성공적인 실현을 위해서는 국제적으로 경쟁력을 갖춘 인프라의 조성과 물류산업의 육성과 함께 무엇보다 이러한 전략을 계획, 시행, 통제할 수 있는 우수한 전문인력의 육성이 중요한 이슈로 부각되고 있다. 이러한 관점에서 현재의 물류분야 인적자원 개발 실태를 진단하고, 국제적으로 경쟁력을 갖춘 물류분야 인적자원의 개발을 위한 전략을 모색하는 것은 중요한 과제라 하겠다. 본 논문에서는 대학을 포함한 교육기관의 물류분야 교육과정, 물류분야 자격제도 등에 대한 조사를 통해 우리나라 물류분야 인적자원 개발의 실태를 진단하고, 주요 외국의 물류분야 인적자원 개발 전략을 벤치마킹하여, 이를 바탕으로 경쟁력을 갖춘 물류분야 인적자원 개발을 위한 개선 방향을 도출하고자 하였다. 나아가 물류전략의 전개에 따른 물류분야의 지식습득 영역을 체계적으로 도출하고, 대학의 물류분야 교육을 위한 표준적인 교육과정을 제시하고자 하였다. Developing superior human resources is known as a key success factor for improving the competitiveness of logistics systems. We attempted to derive the core knowledge areas in the logistics area based on the review of the conceptual development of logistics. We surveyed the existing education and human resource development in logistics area. Based on the case studies for selected countries, we suggested directions for improving the education and human resource development in logistics area. In addition, we proposed a curriculum framework for logistics education in the university.

청주경관과 청주8경

권상준 청주대학교 산업과학연구소 2004 産業科學硏究 Vol.21 No.2

This study aims to preserve urban landscape, which should be considered to establish a new paradigm for eternal prosperity focused on from people to place In order to do refer to that notion of the new paradigm, that is, a matter of concerning firstly about the neighborhood for new global community, secondly the placeless of people who live at the special area time and community, thirdly the place per so containing the placeless based on tradition and culture. The one of alternatives for representing landscape to the placeless is to choose eight Sceneries in making a symbolic image of the place. The choosing eight sceneries can be separated into four specialized characteristics based an 32 sceneries of the urban landscape. The 32 and 8 sceneries in chong-ju can be chose annually from the questionnaire of chong-ju citizen. The preservation 8 sceneries in chong-ju means not only the holistic completion of the city should have ecological landscape image, but also the important urban factor with the city tradition and idea should be harmonized This study should be based on confirming the paradigm for the place prosperity of chong-ju as well as having a momentum to find methods for preserving urban landscape, even though the approach is subjective to studying on the characteristics and preservation of choosing the 8 sceneries of chong-ju.