• 제목/요약/키워드: thought of change

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화학 기계적 연마에서 마찰력 감소에 관한 연구 (A study on the decay of friction force during CMP)

  • 권대희;김형재;정해도
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 춘계학술대회 논문집
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    • pp.972-975
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    • 2002
  • An understanding of tribological behavior in CMP(Chemical Mechanical Polishing) is one of the most important things to reveal the mechanism of material removal. In CMP, the contact type is thought to be semi-direct, elastohydrodynamic contact type from the Stribeck diagram, which is a combination of solid-solid direct contact and hydrodynamic lubrication with thin liquid film. This study is focused on the decay of friction force during CMP from two points of view, one of which is change of the real contact area and the other is the decrease of the elastic modulus of the pad caused by the increase of the temperature during CMP Experiments are implemented with elastic modulus measuring system and tool dynamometer. Results show that the decay of friction force during CMP results from the decrease of the real contact pressure working on an abrasive, which is induced by the decrease of elastic modulus of pad caused by the increase of temperature. And, the phenomenon is thought to be happen specially in the case that the weight concentration of abrasive in slurry is small enough.

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송건호의 언론활동과 언론사상 (Gun-Ho Song's Journalistic Activity and Thought of the Press)

  • 박용규
    • 한국언론정보학보
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    • 제59권
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    • pp.71-91
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    • 2012
  • 송건호는 기자들을 대상으로 한 설문조사에서 '가장 존경하는 인물'로 선정된 바 있다. 송건호는 언론인으로 활동하며 언론이 정권의 탄압에 굴복하고, 정권의 특혜를 받으며 기업화되는 과정을 직접 경험했다. 그는 1975년에 "동아일보"가 정권의 탄압에 굴복해 기자들을 대량 해고하자 책임감을 느끼고 신문사를 퇴직했다. 그 후 그는 권력과 자본에 종속된 언론에 대해 더욱 예리한 비판을 가했다. 송건호 언론사상의 핵심은 언론이 권력과 자본으로부터 독립해 민족주의와 민주주의에 기여해야 한다는 것이다. 또한 그는 언론인이 기능인과 같은 역할만을 하는 것을 넘어서서 역사의식과 사회과학적 지식을 갖추고 활동해야 한다고 주장했다. 그의 언론사상은 또 다시 언론의 독립이 위태롭고 언론인의 기능인화가 드러나는 현재의 언론 현실에서도 여전히 유효하다. 그의 언론활동과 언론사상을 살펴보는 것은 미디어 환경의 변화 속에서 언론의 올바른 역할과 언론인의 바람직한 자세를 모색하는 데 도움을 줄 수 있을 것이다.

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쓰기 교육의 기원과 발달에 대한 연구 -'재현(再現)'과 '표현(表現)'의 발생을 중심으로- (A study on the origin and development of writing education - focused on the birth of 'representation' and 'expression' -)

  • 배수찬
    • 고전문학과교육
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    • 제16호
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    • pp.207-235
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    • 2008
  • This study investigated the formation of communication education which is based on the contemporary language education. Concretely I watched chronologically the proportion of culture element and behavior element, its change, and the contents of writing education. To achieve this, I took the ancient Greek language education as the main materials. The sophists are right if we think only the empirical world, because of the changeability of external world and the relativity of sense. On the other hand, Platon emphasized the ability of abstract thought which is inherent in the human inside. But today's education only emphasizes the 'expression' which came from the Platonic thought. So students fills their devastated inside with arbitrary idea in this history-forgotten social circumstance. It is very beneficial to make subject have some cultural studies and to enhance the sensation on the world through the writing of representation because these can be good to the growth of subject. It is our-not as educator but as a predecessor of human being-duty to set the catalogue of cultural studies of this age and to make students feel the fundamental harmony and the beauty of the world.

그로테스크 특성이 반영된 예술 분장의 연구 - 안면 분장을 중심으로 - (A Study on the Art Make-up Reflected on Grotesqueness -Focused on face-)

  • 김숭현
    • 한국패션뷰티학회지
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    • 제3권2호
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    • pp.39-46
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    • 2005
  • Art-Make-up has resulted in occupying one of the central areas of this culture. Art Make-up is currently undergoing various changes. The viewpoint of modern make-up is the infiniteness of emotion such as the subjectively individualized expressions and aesthetic values breaking with conventional thought. The most significant change is the idea of the 'grotesque'. The purpose of this research is to re-clarify the development of the diversity, professionalism and artistic feature through the study of Art make-up based on the 'grotesque' style. This also strives to focus attention at observing the deep and mysterious workings of the human inner world. In order to explain the features of 'grotesque' Art make-up, six images below are presented. Firstly, Inharmonious images. Secondly, disgusting inhuman images. Thirdly, mechanical images. Fourthly, distorted and exaggerated images. Fifthly, diabolic and horrific images. And, lastly, playful images. These six images thoroughly demonstrate the 'grotesque' features. The fact at we can see the 'grotesque' features in Art make-up explains the enormous growth of Art make-up and the unlimited range of expression in this field. It also implies that the choice of material and theme is not restricted to universal artistic criteria. In closing, it is necessary that Art make-up is thought of not as actual art but more as a tool for its subjects. As a result, this research will provide valuable information for studies in the future.

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Effect of different underwater recovery methods on heart rate after circuit weight training

  • Park, Jun Sik;Kim, Ki Hong
    • International Journal of Internet, Broadcasting and Communication
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    • 제14권4호
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    • pp.222-227
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    • 2022
  • The purpose of this study was to investigate changes in heart rate according to recovery methods after circuit weight training exercise. Fourteen men in their twenties were selected as subjects, and three sets of circuit weight training were performed by cycling six sports, and two recovery conditions (dynamic and static) were performed immediately after exercise. Changes in heart rate did not have an interactive effect according to recovery method and time, and both conditions showed significant changes between sets 1 and 2, and between sets 3 and after recovery. In this study, the high heart rate of 2 sets and 3 sets was seen as a result of exercise stimulation, and the low heart rate of 1 set was thought to be due to the decrease in vagus nerve activity rather than the role of catecholamines. On the other hand, the heart rate after 20 minutes of exercise did not show any difference according to the recovery method, which could mean that the recovery process due to the aquatic environment can act more strongly than the process of dynamic recovery and static recovery. It is thought that the characteristics affected the sensory and circulation of the body, and thus the change of the afferent signal and the level of metabolic products generated in the active muscle.

하이힐 착용 심리에 대한 질적 연구 (A Qualitative Study on the Psychological Meanings of Wearing Female High-Heeled Shoes)

  • 조선명;김희선;고애란
    • 한국의류학회지
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    • 제33권9호
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    • pp.1361-1373
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    • 2009
  • This study analyzed female motives and psychological experiences related with high-heeled shoes. Data was collected through in-depth interviews with seven females having more than forty pairs of high-heeled shoes. Exploratory data are classified into physical aspects and mental aspects, and the meaning of wearing high-heeled shoes were derived and discussed. First, with high-heeled shoes, the participants tried to make an ideal physical appearance, 1) to make an aesthetic illusion of a longer, more slender body 2) to make a more glamorous bodyline and toned legs. Second, the psychological experiences were as follows: 1) Wearing high-heeled shoes, they felt self-confidence in appearance and had feelings of satisfaction, fulfillment, and superiority. 2) High-heeled shoes gave wearers an increased sexual appearance in addition to a feminine attitude and independent mind. Accordingly, wearers thought they could make males compliant with a better sexual look in private and public life. 3) Through buying or putting on high-heeled shoes, women could change their mood, have mental stability, and channel sexual desires. 4) Some women made the secret self with the collected high-heeled shoes for sexual fantasies. 5) They thought that painful bodies or feet were not cumbersome. In addition, some wearers thought high-heeled shoes were a natural extension of their bodies.

초음파영상검사와 한의변증분류와의 관계와 관련된 중의학 임상연구에 대한 문헌고찰 (Literature Review of Clinical Studies for the Relationship between Ultrasonographic Examination and Syndrome Differentiation Classification in Chinese Medicine)

  • 황지혜;고동균
    • 동의생리병리학회지
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    • 제32권4호
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    • pp.217-225
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    • 2018
  • This study was to investigate the relationship between ultrasonographic examination and pattern identification classification on cinical studies in chinese medicine. We searched clinical studies related correlation between ultrasonographic examination and pattern identification classification in chinese medicine, that published from 2013 to 2016 in China National Knowledge Infrastructure (CNKI) databases by keywords, 'ultrasound(超?)', 'chinese medicine(中?)', 'syndrome differentiation (辨?)'. Seventeen studies were found. There were 7 studies of gynecological diseases including polycystic ovary syndrome and uterine myoma, 5 studies of fatty liver, 3 studies of arthritis, and 1 studie of thyroid nodule and lymphadenopathy respectively. As a result, ii is thought that there was a certain degree of correlation between the change of the ultrasonographic image and the pathological types according to traditional chinese medicine (TCM) syndrome differentiation and ultrasonographic examination could be used as secondary means for the TCM syndrome differentiation classification. In conclusion, by using ultrasonograph device in a medicinal way of TCM and traditional korean medicine (TKM), it is thought that more detailed and accurate diagnosis and treatment are possible and the evidence for reasonableness of syndrome differentiation in TCM and TKM its validity can be secured.

소강절의 수론 사상과 <구수략>에 미친 영향 (The thought of numerical theory of $Sh\grave{a}o$ $K\bar{a}ngji\acute{e}$ and it's influence on )

  • 정해남
    • 한국수학사학회지
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    • 제23권4호
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    • pp.1-15
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    • 2010
  • 본 논문은 소강절의 주저인 <황극경세서>를 토대로 그가 천지만물의 원리를 설명하기 위해 도구로 삼은 수론 사상을 살펴보고 그것이 최석정의 <구수략>에 어떤 영향을 미쳤는지 알아본다. 또한 최석정이 소강절의 사상 중 어떤 측면을 계승하고 확장하였는가를 수학사적 관점에서 살펴본다.

한국 성인의 식습관-암과 관련된 영양 지식, 믿음, 태도에 관한 연구 (Diet-Cancer Related Nutrition Knowledge, Beliefs, and Attitudes of Korean Adults)

  • 진영희
    • 한국식생활문화학회지
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    • 제15권2호
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    • pp.111-121
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    • 2000
  • This study was to investigate the nutrition and cancer prevention knowledge, beliefs, attitudes, and self-reported dietary changes. Data were collected from 903 parents whose children were attending an elementary school, a middle school, a high school, or a junior college in Kimcheon. Thirty-seven percent of the subjects reported that they had made dietary changes for their health. Respondents reported eating more vegetables(33.1%), fruit(24.1%), whole grains(19.9%), and lower-fat meats(14.5%) and less alcohol(17.2%), high-fat meat(16.4%), fats(13.8%), smoked foods(13.8%), snacks/cake/sweets(11.7%), salty foods(9.6%), and refined grain products(6.1%). Those who did not make any dietary changes most often said the reason was that they thought their diets were already healthful and therefore there was no reason to make a change. Eighty-nine percent of the subjects agreed that diet and disease were related and 89.5% knew that diet and cancer were related, yet 8% believed there was nothing a person could do to reduce the risk of getting cancer. In response to open-ended questions about foods that either increase or decrease cancer risk, vegetables, fruit, traditional fermented foods, etceteras, and whole grains were thought to decrease risk, and burned foods, salty foods, additives, high-fat meats/fats, and alcohol were thought to increase cancer risk. In this study, education levels to be the major demographic variable and residential district had an impact on cancer prevention knowledge and attitudes. People at lower educational levels and rural residents should be targeted for education about cancer risk reduction.

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(InTe)x(GeTe) 박막의 비정질-결정질 상변화 (Amorphous-to-Crystalline Phase Transition of (InTe)x(GeTe) Thin Films)

  • 송기호;백승철;이현용
    • 한국전기전자재료학회논문지
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    • 제23권3호
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    • pp.199-205
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    • 2010
  • The crystallization speed (v) of amorphous (InTe)$_x$(GeTe) (x = 0.1, 0.3 and 0.5) films and their thermal, optical and electrical behaviors have been investigated using nano-pulse scanner (wavelength = 658 nm, laser beam diameter < 2 ${\mu}m$), X-ray diffraction (XRD), 4-point probe and UV-vis-IR spectrophotometer. These results were compared with those of $Ge_2Sb_2Te_5$ (GST) film, comprehensively utilized for phase-change random access memory (PRAM). Both v-value and thermal stability of (InTe)$_{0.1}$(GeTe) and (InTe)$_{0.3}$(GeTe) films could be enhanced in comparison with those of the GST. Contrarily, the v-value in the (InTe)$_{0.5}$(GeTe) film was so drastically deteriorated that we could not quantitatively evaluate it. This deterioration is thought because amorphous (InTe)$_{0.5}$(GeTe) film has relatively high reflectance, resulting in too low absorption to cause the crystallization. Conclusively, it could be thought that a proper compositional (InTe)$_x$(GeTe) films (e.g., x < 0.3) may be good candidates with both high crystallization speed and thermal stability for PRAM application.