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중심관이 있는 고효율 축상 유입식 싸이클론 집진기 수치해석적 연구
박지영,장동순,엄태인 忠南大學校 産業技術硏究所 1994 산업기술연구논문집 Vol.9 No.2
A numerical study has been performed in order to investigate the performance of two different shapes of axial-vane type cyclones. The first is a standard type and the other is the one with a central body of the form of an annular tube. Numerical calculations are made using a well-known Patanker's methodology. That is, a control-volume based finite difference method is employed together with the power-law scheme for the descretization of the convection term appeared in governing equation. The pressure-velocity coupling is resolved by the use of the revised version of SIMPLE, say SIMPLEC. The Reynolds stresses are closed using the standard k-ε model. The general pattern of fluid motion is resolved together with the particle trajectory behavior for 8 different particle sizes as a function of swirl strength and central body. The calculation data are in good agreement with the empirical knowledge, for instance, the effect of swirl intensity. The cyclone with a central body shows a high removal efficiency of particulate but more pressure drop than a standard one. Further discusstions are made in detail.
나동석 박현순 청주대학교사회과학연구소 2005 한국사회과학연구 Vol.27 No.2
사회복지실천에서 인간행동과 사회환경을 이해하는 기초이론과 실천현장에서 클라이언트 이해를 위한 개입 프로그램에 교류분석이 사용되었다. 그동안 자아상태와 이고그램을 중심으로 복지관, 병원 등의 실천현장에서 주로 사용되어졌다. 그 외의 다른 교류분석의 이론들도 클라이언트와 사회복지사의 역량강화를 위해 기여히는· 부분을 가지고 있다. 특히 성격적응유형과 계약은 전문적 관계의 내용과 질을 풍부하게 하는 데 사용될 수 있다. 이를 위해 자아상태와 이고그램처럼 구조화된 프로그램의 제시가 필요하다. 영어로 된 용어의 한계국복을 위해 한국적인 표준화작업의 필요성이 대두된댜 사회복지의 가치구현에 교류분석이 어떤 역할을 하고 있는지 알기 위해 서는 이론과 개입의 유용성과 함께 한계가 층분히 논의되어야 한다. This article is aimed to review 'Transactional Analysis(TA)' as an intervention program in social work practice. As a basic theory to understand the relation between human behaviors and social environment, TA has been used as an intervention program in practice fields. Among TA theories, 'ego-state' and 'ego-gram' have been applied to in our practice fields such as community centers , hospitals , etc. Other TA theories can also contribute to the empowerment of clients and social workers. Especially ' personal adaption type' and 'contract' can be utilized in making the content and quality abundant in professional relation. We need to present structured programs like 'ego-state' and 'ego-gram' in our practice fields. There has not been enough discussion about the methods and limitations of TA theories and of intervention programs in our social work practice . It is strongly necessary for us to standardize the TA terms in Korean in order to overcome the limitations in using English terms.
박성태,황정동,김상열,문헌팔,양세준,김순철,유남진 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.3
벼 기계이앙 육묘에 주로 사용하고 있는 플라스틱 육묘상자의 문제점을 개선하고 친환경 농업 실현에도 기여할 수 있는 벼 기계이양 종이 육묘상자개발 및 육묘시험 결과를 요약하면 다음과 같다. 1. 폐지 등 혼합물을 고열압착한 종이 육묘상자는 내부 길이가 가로 58㎝, 세로 28㎝, 높이는 2㎝이고 무게는 250g이다. 2. 종이 육묘상자 모의 파종 후 10일~30일 묘소질은 플라스틱 육묘상자 모에 비하여 초장이 1.1~1.8㎝ 짧고 본당 건물중은 0.3~3.7㎎이 떨어졌으나 엽수와 모 충실도는 비슷하였다. 3. 종이 육묘상자 모의 파종 후 30일(중묘) 이앙 시 결주율은 3.3%로 플라스틱 육묘상자 모 결주율 3.2%와 거의 같았고, 출수기, 벼 생육특성 및 수량도 플라스틱 육묘상자와 비슷하였다. 4. 종이 육묘상자의 이점은 플라스틱 육묘상자에 비하여 육묘상자 비용이 약 20% 절감되고 파종 후 운반, 치상 등 작업이 용이하며, 이앙 후 회수, 세척 및 보관관리 노력이 생략된다. 그리고 이앙 후는 논에서 유기물화되므로 친환경농업에도 부합된다. A light and bio-degradable paper tray for seedling raising in machine transplanting rice was developed for the first time and a possibility for rice seedling growth was evaluated. The paper tray was made of mixture of recycling paper and sawdust, and molded under high temperature and pressure. The tray was 58㎝ length x28㎝ width x2㎝ height in size and 250g in weight per tray. The seedling height and dry weight per plant grown at the paper tray were generally 1.1 to 1.8㎝ shorter and 0.3 to 3.7㎎ lighter than those grown at the conventional plastic tray, respectively. However, other characters such as leaf number, seedling health score, missing hill, heading date, panicle and spiketlet number, and milled rice yield were similar to those in the plastic tray. Based on the result of research, the paper tray had following advantages in comparison of the plastic tray. The paper tray could be reduced seedling raising cost by 20% as compared with the plastic tray. Since the paper tray was of lightness even after seedbed soil fill-up, it was more handy and convenient to carry over. Labor input for collecting, washing, and storing the empty tray after seedling transplanting was not needed as the plastic tray. The paper tray was also bio-degraded and transformed into an organic matter, once it was incorporated into soil, which was considered as an environmentally- safe cultivation technology.
E. coli 과량발현을 통한 B형 간염 바이러스 preS1 유도체의 안정한 동위원소 N의 치환
박병관,김세하,한규훈,김선영,홍요정,이시형,한동설,김순종,박진구 木浦大學校基礎科學硏究所 1997 基礎科學硏究誌 Vol.15 No.-
We have used molecular biology technique to label the side chains and backbone of HBV preS1(1-56) with stable isotope (??) during E. coli over-expression and purified the protein to near homogeneity. The expression level of ?? labelled preS1(1-56) seems to be ∼15% of the total protein. to characterize the secondary structure of the labelled protein, circular dichroism was used. In different buffer conditions including pH 3.3 and pH 7.4 the protein seems to be devoid of any stable secondary structure probably suggesting that the N-terminal portion (preS1(1-56)) of HBV preS1 might be unstructured before binding to its target cells.
농구지도자의 리더십과 임파워먼트 및 팀 효율성과의 관계 연구
박영순,강동원,이종희 경희대학교 체육대학 한국체육과학연구소 2002 體育學論文集 Vol.30 No.-
The purpose of this study was to investigate of the relationship of team effect, empowerment, and leadership behavior of basketball instructors. The subjects of this study were composed of 472(male 350, female 121) basketball players who were selected using the systematic stratification cluster random sampling among the amateur basketball teams in Seoul and Kyung-gi province. The results were collected from a self-administrated questionnaires. It were analyzed through relation analysis, discriminant analysis, ANOVA, and multiple regression analysis. The results of this study were following: First, according to the demographic characteristics of the amateur basketball players, leadership behavior style shows differences. Female player's autocratic behaviors are higher than male player's, and high school player's training & instruction behaviors are higher than middle school player's or university player's. Positive feedback behaviors are getting higher grade level. Player's parents who have athletic experiences are also getting higher grade level. And 2-3 years in career of player's democratic behaviors are the other career of player's. According to the demographic characteristics of the amateur basketball players, empowerment of players shows differences, 100-200 million Won's meaningfulness is the highest among income level in their home, the more 400 million Won's impacts are the highest among income level in their home. And full time player's satisfaction of team effects are higher than the other player's. Second, leadership behavior style effects basketball player's empowerment; it's sub-variances are competence, impact, and self-determination. Social support behavior and positive feedback behavior effect competence and training & instruction, democratic behavior effect self-determination, and positive feedback behavior and social support behavior effect competence. Third, leadership behavior style effects team effectiveness; team effects are discriminated from three group, and democratic behavior and social support behavior effect member satisfaction. Forth, player's empowerment effects team effectiveness; the team effectiveness are discriminated from three groups. The meaningfulness are negative. while the impact is positive in the influences of member satisfaction.
一部大都市地域 靑少年의 成長發育·最大成長發育年齡·相關性과 回歸直線方程式에 대한 類似縱斷的 硏究
朴正煥,朴淳永,柳東俊 慶熙大學校 1989 論文集 Vol.18 No.-
The authors intended to study by semi-longitudinal research method, the physical status of 329 high school students in urban area ( male ; 164, female ; 165) who had born during the period from March 1 in 1970 to February 28 in 1971. The results are as follws ; 1. Physical growth and development Body height showed the first - step linear development and body weight showed second - step linear development, but relative body weight showed third - step linear development, but relative body wight showed third - step linear development and female excelled male at second - step development. The intersecting ages between male and female were the age 9.5 - 12.5 in case of body height, the age 10.5 - 12.5 in case of body weight, the age 10.5 - 13.5 in case of relative body weight respectively. During these periods, female excelled male in growth and development, but after these periods, male excelled female . 2. Maximum growth age of physical growth and development In case of body height, maximum growth ages were 12.63 for female, which shows that MGA of female appeared about 2.8 years earlier than that of male. In case of body height, maximum growth ages wore 12.63 for male and 9.82 for female, which shows that MGA of female appeared about 28 years earlier than that of male. 3. The stanadard body weight of the Korean youth In case of 6 years of age group, correlation coefficient of r=+0.685 ( p<0.001 ) for male and of r=0.658( p<0.001 ) between body height and body weight was found, from which respective linear regression equation of body weight and body height was established for male and female as follow ; Male : Y ( Body weight )=0.391 X ( Body height )-25.47 (Sy. x=±1.89) Female : Y ( Body weight )=0.336 X ( Body height )-19.48 (Sy. x=±1.75) Similar regression equations of body weight and body height were found all age groups from 6 to 17 years old listed in table 5.
비선형 광학 특성을 갖는 고분자 합성과 물성에 관한 연구
박정순,하재국,박동규 慶星大學校 1998 論文集 Vol.19 No.2
The wavelength spectrum of the X ray produced in 0.1cm gold slab by the 10 MeV electron beam has been investigated with the EGS4 Monte Carlo package. The general feature of the spectrum agrees with the expectation based on QED calculation. The peak at 2.5pm in the pectrum is suggested to be due to an internal transition of the gold atom. An experimental test is required to confirm these arguments.