• 제목/요약/키워드: HIPS

검색결과 256건 처리시간 0.024초

사출성형공정을 이용한 미세패턴을 갖는 플라스틱 부품 제작에 관한 연구 (A study on the Plastic Parts with Nano Pattern using Injection Molding Process)

  • 김동학;김태완
    • 한국산학기술학회논문지
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    • 제4권3호
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    • pp.168-171
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    • 2003
  • 본 연구에서는 일반사출과 MmSH방식 두 가지의 사출성형공정을 이용하여 나노패턴 구조물을 제작하였다. 성형품에 나타난 나노패턴의 전사성은 MmS방식을 이용한 PC 성형품에서 가장 우수했다. 일반사출공정에서 HIPS로 제작된 성형품은 나노패턴의 전사가 잘 형성되었고, PC의 경우 전사가 잘 이루어지지 않았다 연구 결과 수지의 유동성이 좋고, 금형표면 온도가 높을수록 나노패턴의 전사성은 향상됨을 알 수 있었다.

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폴리아닐린 블랜드의 전기적 특성 (Electrical Properties of Polyaniline Blends)

  • 김원중;김윤상;김태영;김종은;서광석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 추계학술대회 논문집 전기물성,응용부문
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    • pp.95-97
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    • 2003
  • This paper describes electrical properties such as electrical conduction characteristics and space charge distributions of polyaniline/polystyrene conducting blends. It is interesting to note that the charging current decreased as the temperature was elevated when DC voltage was applied, and also the hopping distance decreased with the increase of temperature for the PANI/HIPS blends, while generally, the hopping distance decreases as the charging current increases. It is exposed that this result is opposed to widely known phenomenon. It could be examined viewing space charge distributions by a pulsed electroacoustic (PEA) method.

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Mechanism and Motion of New Biped Leg Machine

  • Lim, Hun-Ok;Ogura, Yu;Takanishi, Atsuo
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.1922-1927
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    • 2005
  • This paper describes the mechanism of a new biped machine capable of doing human-robot cooperation work. The biped machine, WABIAN-2 is made of two seven degrees of freedom (DOF) legs, a two DOF waist and no DOF trunk. Its leg system consists of two three DOF ankles, two one DOF knees and two three DOF hips to deal with various walk motions. Its height is about 1.2[m], and its weight is 40[kg]. It is designed with large movable range as a human. Also, a knee stretch walk pattern generation for the biped machine to perform natural walk like a human is discussed in this paper. Its leg motion is compensated by using the motion of its waist. Basic knee stretch walk experiments using WABIAN-2 are conducted on the plane, and the validity of its mechanism and walk pattern generator is verified.

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4세에서 7세까지 아동의 균형 수행력 비고 (Balance Performance of 4-7 Year Olds)

  • 배성수;이한숙
    • The Journal of Korean Physical Therapy
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    • 제11권2호
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    • pp.21-28
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    • 1999
  • The purpose of this study were to describe the performance 67 kindergartener who aged from 4 to 7 years on the Pediatric Clinical Test of Sensory Interaction for Balance(P-CTSIB) and to determine difference with foot position and age. All Subjects were performance with different foot position that were feet-together, heel-toes. the starting position was that subject placed their hands on the hips, The results of this study were as follows 1. There were significiant difference in all instances by age whoa subjects were foot together(p<0.05). 2. There were singificiant difference in all instances by age excepts condition V awhen subjects were heel toes(p<0.05). 3. Duration of balance performance, of 4-year-olds were shortest and duration of balance performance of 7-year-olds were longest.

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진동모타를 적용한 휴대폰 세트의 진동특성 극대화에 관한 연구 (A Study for the Maximization of Vibration Characteristics In the Cellular Phone Set with the Vibration Motor)

  • 김헌정;최창환
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2001년도 춘계학술대회논문집
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    • pp.356-361
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    • 2001
  • A research to maximize the force transmitted from a vibration motor at the vibration mode, installed in the cellular phone jig, is presented in this study. When the natural frequencies corresponding to the structural vibration modes of the set exist within the range of the driving frequencies acquired by changing the RPM of the vibration motor, the structural vibration resonance is applicable to maximization of the vibration force sensible to the human body such as hands, arms, and hips. The analytical modal analysis using the Finite Elements and the experimental modal testing for the set jig were performed in order to understand the structural modes and the corresponding frequencies. Then the dynamic responses of the set jig to the given driving frequency were measured and the results on maximizing the vibration were confirmed by the FEM dynamic simulation.

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현대 패션에 나타난 섹슈얼리티에 관한 연구 -페미니즘 이론을 중심으로- (A Study on the Sexuality Expressed in Modern Fashion - Focusing on the Feminism)

  • 이지현;양숙희
    • 복식
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    • 제57권10호
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    • pp.11-23
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    • 2007
  • The purpose of this study is to express the sexuality of feminism in the modern fashion. As for the methods of research, literary research was carried out using reference based on feminism history and sexuality concept and demonstrative analysis was undertaken using 2000's collections photographs. In the results of that, the sexuality of gender resistance feminism is featured by three key words: sado-masochism sexuality, bi sexuality and hetero sexuality. First, sado-masochism sexuality shows fetish look and dominatrix look shown in the strong attitudes. Sado-masochism sexuality is setting fetishes such as mask, whip, chain, metallic materials and tight leather boots. Second, bi sexuality presents mannish look of soft and feminie style's slim pants suit with ruffle, flounce and decorated detail blouse. and fetish look wearing of sexual symbol clothes such as corset and bustier. Third, hetero sexuality represent glamour look which exposure and emphasis of breasts, hips and other sexual symbols.

Effects of Body-Cathexis and Importance of Ideal Body Image on Satisfaction with Ready-to-Wear (Part One)

  • Hwang, JinSook
    • 한국의류산업학회지
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    • 제2권5호
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    • pp.391-397
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    • 2000
  • The purpose of the present research is to determine, for a sample of female college students, the effects of body-cathexis and importance of ideal body image on satisfaction with ready-to-wear. The sample included 177 female college students aged from 18 to 25. To measure the variables, an instrument was developed based on previous studies. Body-cathexis and importance of meeting the ideal body image were measured for five areas of body parts; head/upper body, lower body, height, weight, and torso. Satisfaction with ready-to-wear includes satisfaction with the fit at pant length, thighs, hips, waist, bust, and neckline, and with the variety in ready-to-wear. Research hypotheses were tested using multiple regression. The results showed that there was a positive impact of body-cathexis for a specific body area on ready-to-wear satisfaction which is related to the body area. The effect of importance of meeting the ideal body image on ready-to-wear clothing was different in regard to different areas of body parts.

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가스사출성형을 이용한 TV MASK FRONT의 무도장 제품에 관한 연구 (A Study on Paintless Molded Parts in TV Mask Front Using Gas-Assisted Injection Molding)

  • 조재성
    • 소성∙가공
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    • 제11권8호
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    • pp.691-700
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    • 2002
  • Injection molded plastic parts have many surface detects: weld line, sink mark, flow mark, gloss, shading, scratching, and so on. Because these surface faults have not been accepted esthetically, plastic parts are Produced through painting or texturing. The purpose of this paper is to develop a paintless molded part of TV Mask Front by flow control method and gas-assisted injection molding. In order to minimize defects from injection molding, this study was carried out using computer aided injection mold filling simulations using MF/FLOW and MF/GAS. Based on these numerical results, we developed FR(Flame Retardant) HIPS and established guidelines of part design, mold design, and Processing conditions. We have achieved of cost sayings, improvement of productivity, and utilization of recycling by eliminating surface defects and painting process.

슬관절내에 발생한 국소형 거대 세포종 - 1예 보고 - (Localized Giant Cell Tumor in Knee Joint - 1 Case Report-)

  • 조진호;왕국현
    • 대한골관절종양학회지
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    • 제13권2호
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    • pp.190-194
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    • 2007
  • 거대 세포종은 서서히 자라는 일측성의 국소형 종물로서 수부에서 흔하고 고관절, 족지관절에서도 보고되나 슬관절내에서는 드물게 발생한다. 이에 저자들은 슬관절 관절강내에서 발생한 거대 세포종 1예를 관절경하에 제거한뒤 병리학적으로 확진하였으며 이를 문헌고찰과 함께 보고하고자 한다.

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실질적인 X-Factor에 관한 고찰 (A Study on the Effective X-Factor)

  • 장재관
    • 한국운동역학회지
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    • 제15권3호
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    • pp.153-159
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    • 2005
  • The purpose of this study was to investigate the Effective X-Factor in golf swing. The term X-Factor means the relative rotation of shoulders with respect to hips during the golf swing. To ascertain the Effective X-Factor that resulted in a high club head speed at impact six golfers' swing motions were videotaped and analyzed using three-dimensional techniques. The results can be summarized as follows. The standard deviations of the professionals' average club head speeds were higher than the amateurs'. This means that the professionals' swing skills were better than amateurs' in driving accuracy and consistency. As the club head speeds were increased gradually the X-Factors and the club head speeds had reached to the subjects' average club head speeds, but the X-Factors and the club head speeds were not increased above the subjects' average club head speeds. The X-Factor Stretch early in the down swing was existed and Professional stretched values were higher than the amateurs. In conclusion my research results suggested that the increase in Effective X-Factors had no relationship to the increase in club head speeds.