• Proceedings of the KIEE Conference
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• 2000.07b
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• pp.991-993
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• 2000

The paper presents the software control of a brush-less do motor with parameter identification. Not only speed and current controls but also a real-time identification of the motor parameters can be implemented by software using the digital signal processor TMS320F240. The DSP Controller TMS320F240 from Texas Instruments is suitable for a wide range of motor drives TMS320F240 provides a single chip solution by integrating on-chip not only a high computational power but also all the peripherals necessary for electric motor control. This new family of DSPs enables single chip, cost effective, modular and increased performance solutions for BLDC drives. The present paper describes how a speed controlled brushless DC drive can be implemented using TMS320F240 and what kind of results can be achieved.

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.3066-3068
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• 2000

전자상거래의 활성화는 HTML 문서나 Javascript와 같은 웹 문서의 빈번한 전송을 요구할 것이며 이는 향후 인터넷 전송 트래픽을 야기하는 주요 요인이 될 전망이다. 웹 페이지는 비슷한 문장열이 인수에 해당하는 부분만이 변화되면서 반복하는 특징을 갖고 있다. 본 연구에서는 웹 페이지의 이러한 특징을 이용하여 매크로 기법을 사용한 웹 문서 압축 알고리즘을 제안한다 우리는 실험을 통해 본 알고리즘이 꿩 페이지의 저장공간 압축에 좋은 성능을 가짐을 보여줌으로써 전송 시간의 축소의 부가적인 효과를 거둘 수 있었다.

• Proceedings of the KIEE Conference
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• 2005.04a
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• pp.183-187
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• 2005

A Zero-Voltage-Switching(ZVS) Three-Level Converter realizes ZVS for the switches with the use of the leakage inductance(or external resonant inductance) and the output capacitors of the switches, however; the rectifier diodes suffer from recovery which results in oscillation and voltage spike. In order to solve this problem, this paper proposes a novel ZVS Three-Level converter, which introduces two clamping diodes to the basic Three-Level converter to eliminate the oscillation and clamp the rectified voltage to the reflected input voltage, the proposed ZVS Three-Level converter can be simplified by removing the two freewheeling diodes.

• The Journal of Natural Sciences
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• v.4
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• pp.233-244
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• 1991

This study was counducted to identify a relationship between the aesthetic costume arising from an and-social minority movement towards the end of 19c, England on the one hand, and bustle and crinolette style which were in fashion at that time, on the other. The aesthetic comstume is studied with articles and cricatures in the magazien "Punch" which was famous for its harsh criticisms of society. Aesthetic elements from various sources were praised or sometimes cricatured by Punch. Aesthets pursued naturalness as is found in Greek costume in reaction to the gross modernised Victorian costume. To be specific, the aesthetes pursued 1)loose robe instead of corset with bustle or crinolette, 2)2nd/3rd dimentionally-coloured dyes instead of anyline in the costume. Liberty Department Store in London has planyed a very important role as a major supplier or aesthteic articles to the aesthetes.

• Journal of The Korean Society of Clinical Toxicology
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• v.3 no.2
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• pp.107-109
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• 2005

Paraqaut, a widely used herbicide, is extremely toxic, causing multiple organ failure in human. Most of paraquat intoxications happen through oral administration. But there is no clinical data for parenteral paraquat intoxication. A 35-year-old male injected paraquat solution on his forearm. He visited emergency room within 10 minutes and was treated with tourniquet, incision, washing and suction. After eight days, the patient was discharged without respiratory symptoms and complications. In treatment of parenteral paraquat intoxication, first aid was very important and the treatment should include tourniquet, incision, washing and suction in order to delay absorptions.

• Korean journal of applied entomology
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• v.23 no.2 s.59
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• pp.102-108
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• 1984

These researches were carried out to investigate the morphology of different species of Trichoderma and the possibilities of differentiation of the species of Trichoderma by electrophoretic methods. Variations between the isolates of a species of Trichoderma indicate the genetical differences, also isozyme and protein patterns will be useful to investigate genetical variations betweens the isolates. It might be possible that distinct bands of isozymes of esterase, phosphotase, catalase, catalase differentiate species of Trichoderma.

• The Research Journal of the Costume Culture
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• v.6 no.3
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• pp.88-99
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• 1998

Image of Modern Art & Fashion are created on the whole in daily life. Image itself is not simple. There is no more distinction between content & form through mutual crossing for intellectual thinking. Specially, image of reproduction circumstance too many mixtual and compromise (collage) are continued to occur. They could pursuit to change their image through the more increase of impulse, exception and popular experience. In this thesis, I studied about image of Modern fashion & Art. In the modern art, visual image showed as anti-beauty and combination of cultural system. It has shown in the theory of Fred Davis and through fashion brand advertising image as follows; Youth vs maturity (ageless image), male s female and androgynous vs unisexuality (genderless image), colligation vs monopoly (street mode image). As a results, the modern trend image are showing the value of the ambivalence. It can be said that he anti-beauty which are occasionally showed in ambivalence has shown a tendency toward another tradition (feminity) through giving an impulse and paradox.

• Journal of muscle and joint health
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• v.4 no.2
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• pp.249-261
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• 1997

The purpose of this study was to explore the effect of short term selp-help education on pain, depression, self-efficacy, and quality of life in patients having chronic arthritis. This program was carried out 3 hrs per week for 4 weeks by 3 small groups among 10 patients. Research design was a quasi-experimental study of nonequivalent control group pretest-posttest design. The subject of this study were 10 of experimental group and 10 of control group. Before and after 4 weeks program, quality of life, self-efficacy, depression, pain, ADL were measured. As a result, it was confirmed the self-help education was effective to increase quality of life, but self-efficacy, depression, pain, ADL were not improved. This suggests the replicate study to examine the effect of self-help education with the large samples of subjects having chronic arthritis.

• Proceedings of the Membrane Society of Korea Conference
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• 1992.10a
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• pp.63-73
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• 1992

환경오염이 심각해 질수록 수자원에 대하여, 생산공정에서 발생되는 폐수를 환경오염 기준치 이내로 처리후 단순 방류하는 소극적인 방법에서 보다 효과적이며 경제적인 처리 방법으로 개선하는 적극적인 인식의 전환을 요청받게 된다. 이것은 생산성에 직결되는 중요한 문제이며 기업의 경쟁력을 강화하는 조건이라 아니 할 수 없다. 더욱이 정부에서는 수자원의 고갈로 상수도 과다 수요업체를 대상으로 하는 오,폐수의 중수도화 정책을 시행할 예정이며, 세금및 상수도료 감면 혜택등으로 실질적인 상수도 절감을 유도하고 있으며, 금년 12월 부터 시행키로 발표된 바 있어, 이와 관련되는 기술의 관심이 그 어느때 보다 높아 지고 있다. 오,폐수 재사용의 기술은, 분류 처리 기술과 고도 처리 기술, 난분해성 폐수의 처리 기술로 크게 나누어 지는데, 당사가 반도체 도금 공장인 A 산업체에 적용한 분리막에 의한 난분해성 유기 용제 폐수의 처리 공법에 대한 연구 개발 실례를 소개하고자 한다.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.849-852
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• 2006

The lightweight foamed concrete is superior to properties of insulation and light-weight because it is included in many inner pore. So, lightweight foamed concrete used to construction field that need to property of insulation. The property of insulation of lightweight foamed concrete is varied with density. Also, Density is varied with hardening matrix and pore rate. The purpose of the experiment is to know thermal properties of specimen according to the change of density when heating the specimen. As a result of this experiment, the higher density, the lower temperature of mold. this tendency isn't same as ordinary lightweight foamed concrete, and then density 0.9 is expressed most low temperature result also the discontinuity of shape of mold was efficient for the prevention of the temperature rise.