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      • 가열 스테인레스 강 표면의 조성

        이경철,함경희,안운선 성균관대학교 1991 論文集 Vol.42 No.1

        스테인레스 강 304를 공기와 질소 기체속에서 200-500℃ 온도 범위로 가열 산화시킨 다음에 표면 산화층이 depth composition profile을 XPS로 구하였다. 기체/산화물 계면 부근에서는 주로 철이 나타나고 내부로 들어가면서 크롬의 농도가 증가한다. 그리고 크롬이 산화 상태를 나타내는 영역에서 철은 금속 상태를 나타내기 시작한다. 이런 현상은 표면쪽으로의 철 이온의 확산 속도와 용액속으로 용해속도가 다른 산화종의 확산 속도보다 빠르기 때문이라고 생각된다. 질소 기체 분위기 속에서 200℃로 가열한 시편은 공기중에서 열 처리한 것과 거의 비슷한 depth profile을 나타내었다. 그리고 이 온도에서는 공기중에서나 질소중에서 산화가 일어나지 않는다. The stainless steel 304 is oxidized at various temperatures between 200 through 500℃ temperature region both in the air and nitrogen atmosphere and analyzed them for the depth composition profile of surface region using X-ray photoelectron spectroscopy(XPS). It is found that Fe is concentrated in the gas/oxide interface, and Cr is found rich in the subsurface under the Fe rich layer. Fe begins to show a metallic state at the region where Cr is still in the oxidized state. These findings can be attributed to the greater diffusion rate of Fe ion compared to other oxidized species. The depth profile of the sample heated up to 200℃ in the nitrogen atmosphere gives a similar result with the one obtained from the sample heated in the air. It is found that no oxidation takes place at these low temperature region either in the air or in the nitrogen atmospheres.

      • 200m 달리기시 곡선 구간과 직선 구간 동작의 운동학적 변인 비교 분석

        김용운,정철수,은선덕,이영석 한국운동역학회 2000 한국운동역학회지 Vol.10 No.1

        본 연구는 단거리 달리기(200 m)의 곡선 구간과 직선 구간의 동작을 비교 · 분석하여, 운동학적 변인의 차이를 규명하고, 곡선 구간의 동작 메카니즘에 대한 기초적인 정보를 제공하기 위해, 서울체육고등학교의 100 m 및 200 m 달리기 선수 5명을 대상으로 하여, 3차원 영상 분석법을 통하여 동작을 분석하였다. 본 연구에서 도출된 결론은 다음과 같다. 1. 신체중심의 높이는 직선 구간이 곡선 구간보다 높았으며, 신체중심 변위의 변화는 곡선 구간에서 더 컸다. 2. 신체중심의 수평속도는 곡선 구간이 직선 구간보다 컸으며, 곡선 구간에서 내측 스트라이드 국면이 외측 스트라이드 국면보다 컸다. 3. 신체중심의 수평 측면속도는 평균값에서 곡선 구간과 직선 구간이 차이가 없었으나, 속도의 절대값에서는 곡선 구간이 직선 구간보다 컸다. 4. 곡선 구간 내, 외측 스트라이드 국면의 이지, 착지시 접선속도는 차이가 없었다. 5. 스트라이드 길이는 곡선 구간의 외측 스트라이드가 가장 길었으며, 직선 구간, 곡선 구간의 내측 스트라이드 순서로 길었다. 6. 스트라이드 빈도는 곡선 구간과 직선 구간에서 차이가 없었다. 7. 상체 전경각의 평균값은 곡선 구간과 직선 구간에서 차이가 없었으나, 범위는 곡선 구간이 직선 구간보다 컸다. 8. 상체 측경각은 평균값에서 곡선 구간이 직선 구간보다 컸으나, 범위는 차이가 없었다. 9. 상완의 운동범위는 곡선 구간과 직선 구간에서 차이가 없었다. 10. 무릎거양각은 곡선 구간이 직선 구간보다 운동범위가 컸다. 이상의 결과, 단거리 달리기의 곡선 구간에서 직선 구간과는 차별화된 수행 형태를 보였으며, 내, 외측 스트라이드 간에도 상이한 수행 형태를 보였다. This study was conducted to make a comparative analysis of running motion and to examine the differences of kinematice in curved and straight track portion during the 200m sprinting. In this study, five skilled male sprinters of high school served as subjects. The running motions were analyzed using the method of three-dimensional cinematography The conclusions of this study were as follows. 1. Height of the center of gravity in straight portion was higher than that in curved portion, but displacement of the center of gravity in curved portion was higher than that in straight portion. 2. Horizontal velocity of the center of gravity in curved portion was faster than that in straight portion, and in curved portion that of left stride phase was faster than that in fight stride phase. 3. There was no difference in mean value of lateral component of horizontal velocity between both portions, but absolute value of that in curved portion was faster than that in straight portion. 4. There was no difference in tangential velocity at the instant of touchdown and takeoff of both strides on curved portion. 5. Stride length in right stride of curved portion was the longest, and next to that, that of straight portion was, and left stride of curved portion was the shortest. 6. There was no difference in stride frequence between curved and straight portion. 7. There was no difference in mean value of forward lean angle between both portions, but active range of that in curved portion was larger than that in straight portion. 8. Mean value of inward lean angle in curved portion was larger than that in straight portion, but no difference in active range of that between both portions. As the conclusion of this study, it was clear that there were significantly different running patterns between curved and straight portion, and between left and right stride of curved portion.

      • 씨름의 미학적 고찰

        조인철,이운형,정민혁 龍仁大學校 武道硏究所 2002 武道硏究所誌 Vol.13 No.1

        This study has started on the hypothesis that the intention of showing beaty comes from body motion of wrestling, the relation of body and circumstances and a spirit of competition. For this study Aesthestics itself and related documents have been analyzed with interviewing of wrestlers. This study has dealt with wrestling's nature, the meaning of aesthestics, Phenomena of aesthestics from experience and on the base of the results the beauty of wrestling motion, the beauty of space, and the beauty of competition have been analyzed and also this study has tried to find aesthestic factors. The results are following The beauty of motion is showed while wrestler performs by direct and actual experience-wrestlers' body motions in entering a stadium, unique gestures before playing a match and just before gaining a victory, exposure of power during the match, symmetry of power of two wrestlers, quick and slow motions. The beauty of body and feet gestures is closely connected with technical actions of wrestling and also the techniques of hands, feet and waist express many aspects of beauty in wresting externally. The beauty of space is from a stadium which has a round shape. The stadium is included in the process of various body motion according to time and space. The environment according to time and space makes wrestlers and spectators close. Wrestlers themselves reveal the beauty by having concern about the spectators. And impartial referees showing interior beauty from the spacial relationship between players and spectators. The beauty of competition have the meaning of sporting nature in wrestling. Sports should have urles. Wrestling absolutely is played by maintaining rules and also such sports are competitive. This kind of competition makes the performance of wrestlers be perfect. The beauty comes from this perfection

      • 강압형 컨버터의 퍼지제어

        盧澈均,具本鎬,任成雲 慶一大學校 1993 論文集 Vol.9 No.1

        This paper presents output voltage control method of buck converter using fuzzy control theory. Output voltage is obtained by duty ratio as output of the fuzzy control. By proposed fuzzy control system, it is good characteristics in the steady state and the transient. The system have robust output characteristics that have nothing to do with load variation from no load to full load. This feature is verified through the computer simulations.

      • 모집 및 채용과정에서의 장애인 고용차별실태에 관한 연구

        박철현,나운환 대구대학교 국제재활과학연구소 2004 再活科學硏究 Vol.22 No.1

        본 연구의 목적은 고용차별 개념과 기준을 토대로 우리나라 장애인 모집 및 채용과정에서의 차별실태를 진단하기 위함이며 그 결과는 다음과 같다. 첫째, 400개 회사 중 91.3%가 응시자격의 직접적인 차별기준이 없는 것으로 나타났으며, 간접적인 차별의 경우 모집회사의 91.3%가 학력, 연령제한 등으로 간접차별을 명시하고 있었다. 둘째, 채용절차에 있어서는 채용전 신체검사요구를 하는 직접적인 차별을 하는 구인회사가 67.8%로 나타났고 간접차별은 시험이나 면접시 적절한 배려와 인터넷 서류접수시 시각장애인 배려규정이 없는 회사(99.5%), 지원서에 신체조건을 표기하도록 하는 회사(82.5%)로 분석되었다. 그리고 직접적 채용절차 차별의 경우 기능종사자나 조립, 단순노무직과 300인 이상 규모가 입법 등, 전문가, 기술공, 사무직, 서비스직과 300인 이하 규모가 차별이 심한 것으로 나타났으며 신체조건표기의 경우는 전문가, 기술공, 사무직, 서비스직 등이 모두 차별이 심한 것으로 분석되었다. 셋째, 응시자격과 간접적 차별내용에 있어 학력제한과 연령제한은 종업원규모와 직종별로 차이가 있는 것으로 나타났다. 즉, 300인 이상 업체와 직종별로는 전문가, 기술공, 사무직, 서비스직이 300인 이하 업체와 조립, 기능직, 단순노무직보다 학력제한을 하고 있는 것으로 분석되었으며, 연령제한의 경우는 300인 이하 업체와 단순노무, 조립, 기능원, 서비스직이 연령제한을 하고 있는 것으로 분석되었다. The main purpose of this experiment was to find the difficult and unequal situations that individuals with disabilities meet when it comes to recruiting and employment process for jobs. The result from this experiment is that first of all, out of 4 hundred companies, 365 companies which is 91.3% show it in their application that they do not discriminate the individuals with disabilities. Secondly, out of companies that are looking for employees, 67.8% (271 companies) of them said that they had certain elements that need to be agreed with the employee. Most of the time, these companies require the employees to have a physical check from the doctor. And 99.8% (398 companies) of the companies show an indirect discrimination against the individuals with disabilities. For example, 99.5% (398 companies) of them don't show any reasonable accommodation during the interview nor through out the registration paper online for the blinds, and 82.5% (330 companies) requires them to fill out the physical condition of the employees. Lastly, it is proven that the employees with disabilities have discrimination on their scholastic ability and age limits depending on what job they apply to. In a condition where employees have discrimination on their scholastic ability, it's usually when they apply for jobs such as office worker, professional work in certain areas. When they have age limit, that's when they apply for works such as constructing, organizing, works that need skill and etc. Considering the result from this experiment, conclusion is that one, there shouldn't be any direct or indirect discrimination items against the individuals with disabilities when one applies for a job and there should be a set of laws to it. Two, in the process of employing, to prevent any indirect discrimination from happening, there should be a special management responsible to it. At last, in the process of employment a disability discrimination law should be enacted.

      • KCI등재

        성인 여성의 자궁경부암 및 유방암 조기검진 수검행위에 영향을 미치는 요인

        노윤녕,김영복,박용문,이원철,맹광호 韓國保健敎育.健康增進學會 2000 보건교육건강증진학회지 Vol.17 No.1

        This study was aimed at preparing basic dada required for establishment of a cancer screening program by examining the status of cancer screenings performed by women in a city and the factors that had an influence on cervical and breast cancers screening behavior of women. In order to find out the status of cervical and breast cancers screening and the factors having an influence on cervical and breast cancers screening behavior, 1,113 women were selected as study area and subjects by a random cluster sampling method, and the subjects were answered by questionnaires. The major results were as follows. 1.In the cases of the breast and the cervical cancers, 16.7% and 55.7% of the subjects turned out to have had one or more screenings respectively in their life-time. Also the rate of screening group of cervical and breast cancers was 16.7%, the rate of screening group of only cervical cancer was 38.9%, and the rate of non-screening group was 44.4%. 2.As to the screening pattern of cervical and breast cancer, there were significantly for age, income, occupation, married status, spouse, the factors associated with health promotion (doctor visiting, exercising), married age, number of children, and breast feeding(p〈0.05). 3.The factors associated with screening behaviors for cervical and breast cancers were age, income, occupation, married status, doctor visiting, exercising, married age, number of children, and breast feeding(p〈0.05). Based on the above-mentioned results obtained by this study, it was anticipated that this study may be play a vital role as basic data for the development and execution of cervical and breast cancers screening program for women in a community. And the analysis, done on the basis of the status of the cancer screening, of the influence factors on cervical and breast cancers screening behavior showed that for the development of a cancer screening program, the factors like age, social-economic class, married status, health promotion behavior, and reproductive characteristics should be considered.

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