기술수준에 따른 여자축구 인프론트 킥 동작의 협응구조

지보경,육동원,김지수,신정택 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2

The purpose of this study was to investigate coordination structure of infront kick in women soccer as a function of skill level. To succeed this purpose, four girls' high school students who had never experienced soccer before were selected as novices, and four girls' high school students who had played soccer for over three years as experts in this lab. To recognize the change of coordination structure according to practice, novices had practiced infront kick in soccer for two weeks. consequently they were taken films of kicking motion three times -before practice, after one week practice, after two weeks practice. However, experts were taken once. The experimental instruments for this study consisted of a video camera, reference frame. LED and APAS for digitizing. Angle to angle diagrams and phase plan portraits for qualitative analysis of coordination structure were gotten with LabVIEW 6i. The conclusions are as follow: firstly, novices' coordination structure had been changed since practice. Secondly, there were significantly different between coordination structures of experts and pre-practice novices. Lastly, there were similar between coordination structures of experts and post practice novices.

대칭형 복사기 줌 렌즈계의 광학적 성능 분석

지택상 ; 박수봉 ; 김봉환 김천대학교 2001 김천대학교 논문집 Vol.22 No.-

We analyzed to calculate the optical capacity, after we chose the designed symmetric 3 group zoom copier lens system in this paper.

대기오염이 기관지 천식의 악화에 미치는 영향

류지원,어수택,김기업,이영목,김양기,홍성아,전창균 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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창의성 교육으로서 미술교육 필요성에 대한 논의

김지택 청주교육대학교 2001 論文集 Vol.38 No.-

高機能性을 갖는 ALC에 關한 硏究

申鉉澤,申智容 慶尙大學校生産技術硏究所 1996 生産技術硏究所論文集 Vol.12 No.-

The effects of the addition of silicone resin with water-repellent properties on the autoclaved lightweight concrete were studied by varing the compositions of silicone resin. ALC samples were cured at 180℃-7hrs under saturated steam pressures. The major experimental results are as follow. 1. The water absorption (7day) of water-repellent ALC specimen with 2.0% of alkyl polysiloxane was smaller than that of experimental standard ALC specimen by 93.1%. 2. The compressive strength after freezing and thawing for 16 days of control ALC specimen was 16.8 ??, but in case of water-repellent ALC specimen with 2.0% alkyi polysiloxane was 41.8 ??. Therefore the performance for freezing and thawing of water-repellent ALC specimen was increased to 149%. 3. The final hydrate materials are 11Å tobermorite, alkyi polysiloxane and unreacted Quartz as results of X-ray diffraction and SEM examination.

금산지역 식생에 관한 식물사회학적 연구

김인택,박태호,진영규,이지훈 7개 국립대학교 환경연구 논문집 공동발행 위원회 2003 공업기술연구 Vol.3 No.-

The vegetation, forest structure and profile diagrams of Mt. Geum(Namhae-gun Gyeongsangnam-do) was analyzed from February 1, 2000 to May 30, 2002. A floristic composition table was constructed to understand the distribution of tree species and the plant community showed that most of the investigated area was occupied by the Pinus thunbergii community. Finally, the vegetation in this study area was classified into 10 communities (P. densiflora, P. thunbergii, Quercus acutissima, Q. Serrata, Q. variablis, Q. mongolica, styrax japonica, Corylopsis coreana, Zelkova serrata and Corpinus tschonoskii) and I afforestation(Chamaecyparis obtusa). The classification and ordination techniques were applied to analyze of floristic composition patterns, the interspecific association and the community forming patterns. According to the analysis of interspecific association, in was divided into 2 groups. The species of first group were mainly involved in character species, and the species of second group were involved in differential species groups. By the calculation of χ²-values based on the vegetation data collected, the component species group of the study area was divided into 1 large group and 1 small group, while the analysis based on TWINSPAN(Two-Way INdicator Species ANalysis) and DECORANA(DEtrended CORrespondence ANAlysis) appeared to be divided into 9 groups.

건강한 성인에서 발병한 칸디다와 연관된 위궤양 1례

박지훈,이상혁,김희,이재호,박성재,지삼룡,양성연,박은택,이연재,설상영,정정명,강미선 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Fungus such as Candida albicans is a normal flora that is frequently found in the oral cavity, gastrointestinal tract, genitourinary tract, vaginal mucosa in a normal person. However, candida can cause opportunistic infection in an immune compromised host. Candidiasis has broad spectrum of disease from mucocutaneous infection to invasive or disseminated infection. But, it is rarely reported that candida is associaed with gastrointestinal tract disease in a healthy adult. The case of gastric ulcer associated with candida particularly in a health adult is reported with relevant literature.

갈바닉 전류를 이용한 철근부식 탐사기술에 관한 연구 : Part 1: 모사용액에서 행한 갈바닉 센서의 전기화학적 시험 Part 1: Electrochemical tests of galvanic sensors in pore solution

유지홍,박진택,김정구,정란 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.8

The correlation between sensor output and corrosion rate of reinforcing steel was evaluated by laboratory electrochemical tests in saturated Ca(OH)_(2) solution with 3.5wt.% NaCl. In this paper, two types of electrochemical probes were developed: galvanic cells containing of steel/copper and steel/stainless steel couples. The corrosion behavior in saturated Ca(OH)_(2) solution with or without 3.5 wt% NaCl addition for the different electrodes was investigated by potentiodynamic test. Weight loss measurement and galvanic corrosion test were conducted to obtain the corrosion rate of reinforcing steel and the charge of sensor in saturated Ca(OH)_(2) solution with 3.5 wt.% NaCl addition, respectively. The results of the potentiodynamic test indicated the possibility of detecting an ingress point of chlorides by measuring the galvanic current. In galvanic corrosion tests, the galvanic current of steel/copper couple was higher than that of steel-stainless steel couple, i.e., the steel/copper sensor is more suitable for high resistance environment. The steel/stainless sensor showed a better linear correlation than the steel/copper sensor. Through the relationship between the sensor system output and the weight loss of steel, real corrosion damage of the steel embedded in concrete can be detected.

핵에너지 태도의 사회 그룹별 특성과 변수

김지은,우형택 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

This study was conducted to find and explain characteristics of diverse social groups' attitudes toward nuclear power plant. 7 hypotheses were constructed and statistically tested. In order to test 7 hypotheses, both Nuclear Energy Attitude Scale and Environmental Attitude Scale were distributed and field surveyed on 839 respondents representing a diverse range of subject groups. The results showed that 6 hypotheses were statistically accepted while 1 hypothesis statistically rejected. Contrary to the first hypothesis, this test found that people in close proximity to the nuclear power plant had more positive attitudes toward nuclear power than those living in distance from the nuclear power plant. Males had more positive nuclear energy attitudes than females. Academic backgrounds were not related to nuclear energy attitudes. Environmental attitudes showed negative relationship with nuclear energy attitudes. While anti-nuclear citizen action groups had the most negative attitudes, nuclear power plant workers had the most positive attitudes among responding groups. Finally, university students majoring in nuclear engineering had more positive attitudes than those of religious studies.

플라이 애쉬가 콘크리트 구조물의 철근 부식에 미치는 영향

박진택,유지홍,김정구,이재호,이광명 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.4

Addition of fly ash has beneficial effects on some mechanical properties of concrete, as well as the corrosion process induced by the chloride ion. The aim of this study was to investigate the effect of fly ash on the steel corrosion in concrete with various water-to-binder ratios. The corrosion process of steel bars embedded in concrete without fly ash and with 20% fly ash was tested under complete immersion, in 3.5 wt.% NaCl solution. Monitoring of open-circuit potential and linear polarization method and electrochemical impedance spectroscopy(EIS) were used to follow the corrosion process. Also, ASTM C1202 test method was used to estimate the concrete's resistivity of chloride penetration in concrete. The results obtained from electrochemical tests show that the use of fly ash has led to the improvement of corrosion resistance. Partial cement replacement by fly ash caused significant pore refinement, reduced permeability to chloride ions, and increased corrosion resistance.