태권도 대학선수들의 찍어차기에 대한 운동학적 특성 분석

김의환,윤상화,조동희,권문석 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

The purpose of this study was to analyze toe kinematic variables of Jigeochagi in Taekwando with three dimensional analysis technique and show the kinematic characteristics of it. The subjects of the experiment were Taekwondo players who have been attending in Yong-in university(YIU), and Jigeochagi is their favorite technique, the kicking form was filmed on 16㎜ video camera(30f/s). Kinematic variables were temporal, posture and angular velocity. The mean values were obtained and used as basic factors for examining characteristics of Jigeochagi in Taekwondo. The results of this analysis were as follows, 1. The total time elapsed(TE) of Jigeochagi were 1.45, 1.56 sec. 1ph was fastest in performance showing then 2ph, 3ph. 2. In performing of Jigeochagi, the ankle, knee angle of supporting foot and the ankle, knee angle of attacking foot flexed to MKA then extened to IMP 3. The ankle, knee, hip angular velocities of attacking foot showed negative value to TO and then positive value to MKA and then showed negative value to IMP.

기업화 스포츠센터의 발전과정과 전망에 관한 고찰

정의권,정동화 중앙대학교 스포츠과학연구소 2001 體育硏究 Vol.- No.15

How to connect the quality of life and the promotion of health with the Leisure Age which is given as a by-product of the modern industrial society is the task of the modern Sports Centers. With the previous developmental process, the objective of this research is to map out the strategy of the industrial sports. 1. The development of sports centers have shown rapid growth by the early 1990s since the '88 Seoul Olympics, and especially have expanded much more through the restucturing period in 1994. 2. The regional distribution of sports centers is concentrated in large cities; for example, among the total number of 184 sports centers in the country, Seoul has 96 sports centers, Kyeong-ki 29, Bu-san 15, Tae-gu 9, In-cheon 8. In particular, there is no sports center in Kangwon-do and Cheon-ra Nam-do. 3. The sports centers are forms of enterprise, which are equipped with spacial and functional facilities for the promotion of health. And the marketability has been expanded and subdivided for the customer-oriented marketing. 4. The prospect of sports centers can be understood through the emergence of distinctive small-sized sports centers, the sports centers for the welfare of employees, the net-work of sports centers for the beauty care, and the sprots centers for the medical care and resort.

통행분포기법의 적용과 평가에 관한 연구

오재화,황의진,진용선 朝鮮大學校 建設技術硏究所 2001 建設技術硏究 Vol.21 No.1

This study has an object of searching for appropriateness in applying the trip distribution model by studying the changes of the character of parameter which the model contains and by analyzing and evaluating trip distribution technique out of four steps of pre-estimate technique for the traffic demand through computer simulation centering around Kwangju. Method of this study is investigating the basic theory for trip distribution model and with this grounding, I rearranged it as research data for trip distribution model compatible for Kwangju, using data such as research data on actual state, the statistics annual report and basic plan for traffic full equipment of Kwangju. So, The most stable measure of the type of trip distribution of Kwangju city was produced in Fratar and Detroit model, however, gravity model has a little bit low reliance in sharing of estimation and actual survey although it is astringent in short period.

직업성 만성폐쇄성폐질환의 업무관련성 심의 사례들과 산업의학적 평가에 대한 고찰

이화평,고동희,이의철 大韓産業醫學會 2009 대한직업환경의학회지 Vol.21 No.1

목적 많은 연구들을 통하여 만성폐쇄성폐질환의 직업성 원인에 대한 역학적 근거들이 제시되고 있지만 산재로 인정받는 경우는 아직 적은 편이다 본 연구에서는 산업안전보건연구원에서 근로복지공단의 의뢰를 받아 시행한 업무관련성 여부에 대한 심의 사례들을 조사하였으며 만성폐쇄성폐질환의 직업성 원인에 대한 근거들을 함께 고찰하여 직업성 만성폐쇄성폐질환에 대한 산업의학적 평가의 시행에 도움을 주고자 하였다 방법 1998년부터 2007년까지 10년간 산업안전보건연구원에서 이루어진 업무상 질병 여부에 대한 심의 기록들을 담고 있는 전산자료에서 만성폐쇄성폐질환을 진단명으로 하는 13건의 사례들을 수집하였다 이들 13건의 기록들로부터 질병명 병력 직업력 흡연력 해당 유해인자 사업장의 작업환경측정 기록 업무관련성 평가에 대한 심의 결과를 파악하였다 결과 총 13건의 사례들 중에서 업무관련성이 높다고 평가된 4건의 사례들은 다음과 같다 1) 도로상 미세 분진과 일반쓰레기 분진에 노출된 비흡연자인 환경미화원 2) 카드뮴 흄에 의해 폐손상을 입은 용접공 3) 방적공장의 면 분진에 의해 발생한 천식이 장기노출에 의해서 만성화되면서 비가역적으로 폐기능이 저하된 공조기 공기필터 관리작업자 4) 개인보호장구와 국소배기장치 없이 작업한 흡연력이 있는 주물공장 사상공 다음의 9건의 사례는 업무관련성이 낮은 것으로 평가되었다 1) 직업성 요인보다는 흡연에 의한 만성폐쇄성폐질환으로 판단된 경우 4례 2) 기존 질환(심한 결핵)의 악화에 의한 질병 발생의 가능성이 큰 경우 1례 3) 잘못 진단된 경우 1례 4) 작업 환경상 유해인자에 대한 노출의 정도가 너무 낮은 경우 2례 5) 유해인자에 노출되기 이전에 이미 발병한 경우 1례 흡연력이 있고 진폐가 없는 사상공의 경우 2006년에는 업무관련성이 낮은 것으로 평가되었으나 2007년에는 높은 것으로 평가되었다 결론 만성폐쇄성폐질환의 산업의학적 평가에 필요한 요소들은 다음과 같다 1) 폐기능 검사와 방사선학적 검사를 통한 만성폐쇄성폐질환의 정확한 진단과 다른 질환들의 배제 2) 해당 유해인자와 질병 발병 사이의 인과관계에 대한 충분한 근거 확보 3) 노출의 정도에 대한 평 가 4) 흡연으로 인한 발병가능성의 평가 산업의는 이러한 요소들을 충분히 고려하여 직업성 여부를 평가하여야한다 또한 환자가 흡연자라고 할지라도 직업성 유해인자에 의한 폐기능의 감소가 평균수명 혹은 건강수명의 실질적인 단축을 가져왔는가라는 문제를 충분히 고려하여 만성폐쇄성폐질환의 직업성 여부를 평가하여야 할 것이다 Objectives To analyse the characteristics of occupational COPD (Chronic obstructive pulmonary disease) cases that were evaluated by the Occupational Safety and Health Research Institute (OSHRI) of the Korea Occupational Safety & Health Agency (KOSHA) Methods Using the OSHRI database from KOSHA we collected 13 cases of occupational COPD that had been evaluated from 1998 to 2007 Results Four cases had been evaluated as occupational COPD 1) a nonsmoking road sweeper exposed to automobile exhaust gases and trash dust 2) an oxygen welding worker exposed to cadmium fumes 3) a cotton mill air conditioner cleaning worker exposed to cotton dust and 4) a foundry grinding worker exposed to dust gases vapors and fumes Nine cases had been evaluated as non-occupational COPD 1) 4 cases in which smoking was determined to be the main cause rather than occupational expo sure, 2) 1 case that was evaluated as another respiratory disease (severe tuberculosis sequelae) 3) 1 case that had been misdiagnosed as COPD 4) 2 cases in which the exposure levels in the workplace environments were too low and 5) 1 case that had developed before the employment Among these 13 cases a shipyard grinding worker had been evaluated in 2006 as having had a low occupational hazard but a similar case (a foundry grinding worker) was evaluated as having had a high hazard in 2007 Conclusions Proper evaluation of occupational COPD demands an accurate diagnosis of COPD itself and also the exclusion of other respiratory diseases that have similar symptoms an investigation of the relevant occupatioonal hazards and the amount of the exposure and a consideration of smoking history The evaluation should also take into account any substantial loss of life due to occupational hazards as well as any disease-free periods

훈련용 유도 人形의 개발에 관한 연구

김의환,최청삼,안병화 한국운동역학회 1994 한국운동역학회지 Vol.4 No.2

The purpose of this study was to develop a judo doll applicable to throwing (Nage-waza) and grappling technique(Katame-waza) training in judo. The height of the doll is 170cm and its weight is 50kg. The weight of the doll can be adjusted by lead belts having various weights that can be attached to the trunk or lower extremities. a judo doll was made of iron steel for skeletal structure vand coil spring for artiualation as similar to the human being in its shape as possible. The skin of the doll was made by soft rubber to be like human skin and protect the doll from an impact exerted during falling down by attack. Judo uniform(Judogi) is worn to the doll like as real human being. The knee angle can be flexed up to 35 degrees backward, torso 30degrees and doll itself 15degrees forward. The electric magnet plate was installed on the floor to keep the doll standing-together(Kumi-kata) the basic natural - position(Shizen-tai) and exert a certain amount of resistive force against an attacker to maximize training effect. Its magnetic force interacted through the iron feet of the doll can be varied by a control system. A structural frame having electric motor and control unit was constructed to automatically put the fallen doll back up to its original Kumi-kata and Shizen-tai after attack. Practicing with this doll has some advantages. It can be used to practice and train alone in such a way to prevent human parter from possible severe injuries. Also it is possible to use biomechanical analyses of judo skills more effectively with the attachment of sensors in the proper location

운항승무원의 직업스트레스, 건강신념 및 건강행위

조의영,이영휘,김화순 성인간호학회 2002 성인간호학회지 Vol.14 No.4

Purpose: The purpose of this correlational study was to identify relationships among job stress, health beliefs and health behaviors of aircrews and contributing factors to aircrew's health promoting behaviors. Method: Two-hundred twenty-four aircrew members completed questionnaires. The questionnaires were composed of a demographic form, health behavior scale, self-efficacy scale, perceived benefit scale, perceived barrier scale, job demand scale, and latitude scale. Result: The subject's health behavior has shown significant correlations with self-efficacy, benefit, and barrier. Significant negative correlations were found between job stress and self-efficacy. Relationships between job stress and barriers were also statistically significant. In demographic features, statistically significant difference were found between subject's rank and job stress score. Also, there was a significant difference between health behavior and the subject's age. Conclusion: Future efforts should focus on the development of a program to consider aircrew's perceived benefits, perceived barriers and self-efficacy to the compliance of health promoting behaviors.

강편 빌레트의 건식 자분 탐상

이의완,김구화,임종수 韓國非破壞檢査學會 1996 한국비파괴검사학회지 Vol.16 No.3

본 연구는 강편 빌레트의 표면 결함을 검출하기 위한 건식 자분 탐상에 관한 것으로 자분 탐상능을 대상체에 흘리는 자화 전류, 대상체의 온도, 자분의 총 분사량 등에 대하여 평가하였다. 선재 제품의 등급에 따라 필요로 하는 몇까지 강종을 선택하여 강종별 자기적 특성을 평가하였으며, 이를 입력자료로 하여 유한 요소법에 의한 자기 해석을 행하였고, 그 결과를 직류 자화 전류에 의한 누설 자속 측정 결과와 비교 분석하였다. 교류 자화 전류에 의한 건식 자분 탐상능을 직류 자화 전류에 의한 탐상능과 비교하여 강종 및 자화 전류의 유형에 따른 자화 전류치를 결정하였다. 직류 자화 전류에 의한 자분 탐상 결과를 유한 요소법에 의한 계산과 비교하였고, 빌레트의 표면과 표면 결함 부위에서 측정한 누설 자속으로 비교 결과를 평가하였다. 각 강편재의 경우 직류 자화 전류에 의한 표면 자장은 그 형상에 의한 영향으로 코너 부위에서는 면 중앙의 표면 자장치에 비해 30% 정도였으며, 교류 자화 전류에 의해서는 그 비율이 70%정도였다. 교류 자화 전류는 코너로부터 면중앙으로 10mm 되는 영역을 제외하고는 전 면에서 균일한 표면 자장을 발생하엿다. 대상체의 온도에 따른 자분의 흡착은 대상체의 온도 150℃까지는 큰 변화가 없으나 자분의 고착에 있어서 60℃ 이상의 고온재에 대해서는 융착 용매로 메틸렌 크로라이드를 사용하는 것이 부적합하였다. 자분의 총분사량은 자분 탐상능에 상당히 큰 영향을 미침을 확인하였고 이에 대한 정량적 평가를 행하였다. Dry magnetic particle inspection(MPI) was performed to detect the surface defects of steel ingot cast billets. Magnetic properties of several materials were characterized by the measurement of the B-H hysteresis curve. The inspection results were evaluated in terms of the magnetizing current, temperature, and the amount of magnetic particles applied to billets. Magnetic flux leakage near the defect site of interest was measured and with the results of calculation by the finite element method in the case of direct magnetizing current. Direct and alternating magnetizing currents for materials were deduced by the comparison of the inspections. Results of the magnetic particle inspection by direct magnetizing current were compared with those of finite element method calculations, which were verified by measuring magnetic leakage flux above the surface and the surface defects of the material. For square rods, due to the geometrical effect, the magnetic flux density at the edges along the length of the rods was about 30% of that at the center of rod face for a sufficiently large direct magnetizing current, while it was about 70% for an alternating magnetizing current. Thus, an alternating magnetizing current generates rather uniform magnetic flux density over the rods, except for the region on the face across about 10 mm from the edge. The attraction of the magnetic particle by the magnetic leakage field was nearly independent of the surface temperature of the billets up to 150℃. However, the temperature should have been limited below 60℃ for an effective fixing of gathered magnetic particles to the billet surface using methylene chloride. We also found that the amount of applied magnetic particles tremendously affected the detection capability.

원자로압력용기장 용접열영향부의 미세조직 변화가 Magnetic Barkhausen Noise 거동에 미치는 영향

김주학,윤의박,문종걸,박덕근,홍준화 韓國非破壞檢査學會 1998 한국비파괴검사학회지 Vol.18 No.4

최근 자기적 특성의 변화가 재료의 미세조직적 상태에 민감하다는 보고가 있다. 재료의 미세조직은 상(phase), 결정립의 크기, 석출물 등의 다양한 인자로 구성되며, 본 연구에서는 이러한 인자들을 이용하여 재료의 특성과 Barkhausen noise(BN)의 관계를 연관시키기 위한 시도를 하였다. ASTM A 508 Gr.3 원자로압력용기강을 대상으로 용접열영향부의 미세조직적인 변화를 일곱가지 대표적인 영역으로 구분하였고, 각 영역에서의 미세조직과 기계적특성의 변화를 파악한 후, 각 조건별로 BN을 측정하였다. 통상의 보자력이나 잔류자화 같은 자기적 성질은 큰 변화가 없었지만, BN은 미세조직의 상태에 따라 현격한 변화를 보였다. 결정립과 석출물의 크기가 증가함에 따라 BN은 증가하였고, tempered martensite 보다는 tempered bainite 조직에서 높은 BN을 나타냈다. Recent study has demonstrated that some magnetic properties are sensitive to the microstructural state of material. The ASTM A 508 Gr. 3 reactor pressure vessel steel has various microstructural changes including martensitic and bainitic phases, and various sizes of grain and precipitates in the weld heat-affected zone (HAZ). To correlate the microstructural state with Barkhausen noise (BN), specimens were prepared through simulating various weld thermal cycles using a thermal simulator. The conventional magnetic properties, i.e. coercive force, remanence and maximum induction, did not change significantly. whereas the BN amplitude and energy during a magnetization cycle changed markedly with microstructural state. The BN increased with increasing grain and carbide sizes, and the tempered bainite structure showed higher BN parameter than tempered martensite.

전산화단층촬영술을 이용한 만성중이염 환자 측두골에 대한 고찰

남승일,고의경,이창헌,김유찬,구수권,이상화,전경명 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

Azoloquinoxaline類의 간편한 合成에 관한 硏究 : 第1報

郭美玉,南順花,金恩慶,金眞姬,韓盛旭,李萬佶,朴義煥,金浩植 고신대학교 자연과학연구소 1993 고신대학교 자연과학연구소 논문집 Vol.3 No.-

The reaction of 2, 6-dichoroquinoxaline with m-chloroperbenzoic acid gave 2, 6-dichloroquinoxaline 4-oxide, whose reaction with sodium azide provided 7-chlorotetrazolo[1, 5-a]quinoxaline 5-oxide and not the isomeric azide. The structures of the synthesized compounds were confirmed on the basis of IR, ¹H-NMR, elemental analysis and mass spectral data.