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Effects of Extrusion Conditions on Pasting Properties of Potato and Potato : Wheat Flour Mixture
Cha, Jae Yoon,Cho, Yong-Jin,Kim, Chong-Tai,Kim, Chul-Jin,Ng, P. K. W. 한국산업식품공학회 2003 산업 식품공학 Vol.7 No.2
The purpose of this study was to develop extrusion process of fresh potato and to study the effects of extrusion condition on the pasting properties of extruded potato products. The blend of pressed potato and wheat flour and pressed potatoes were extruded at different die exit temperatures (110-160℃) and screw speed of 100 rpm using a twin-screw extruder with conveying, high and low shear screw configuration. The viscosity-related parameters, such as peak viscosity, through, final viscosity, peak time, and pasting temperature of the feed materials and extruded products, were studied using a rapid visco analyzer (RVA). Their water solubility index (WSI) and water absorption index (WAI) were also studied. The peak viscosity, through, final viscosity, and peak time of pressed potato extrudates and potato-wheat flour mixture extrudates decreased as die exit temperature increased. The WSI and WAI of potato products increased as die exit temperature increased. When high shear screw configuration was used, the values of viscosity-related parameters were lower than those when low shear screw configuration was used. The potato-wheat flour mixture products obtained different degrees of depolymerization from fresh potatoes and wheat flour depending on die exit temperature and screw configuration.
조현철,송순천,김춘경,김의영,안용규,이규석,김학렬 龍仁大學校 體育科學硏究所 1991 體育科學硏究論叢 Vol.1 No.1
The purpose of the present study is to determine the levels of maximal oxygen uptake and anaerobic threshold of boxing players(n=23), ken-do players(n=18), Judo players(n=12), T.D.K players(n=18). Treadmill test was used to measure maximal state and anaerobic threshold of metabolic variables. Treadmill exercises protocol was 2-min incremental test from an initial work load of 0MPH(grade : 0%) to all-out by step of 1.0MPH(grade : 2%). The results of measurement was as follows : 1. Absolute(1/min) and relative(ml/kg/min) maximal oxygen uptake was highest(5.08l/min, 65.01 ml/kg/min) in Judo layers, followed in order by the T.D.K players (4.37l/min, 64.74 ml/kg/min), Boxing players(4.18) l/min, 63.19 ml/kg/min) and ken-do players(3.81l/min, 58.65 ml/kg/min). It is not significant difference in the relative maximal oxygen uptake, but is significant difference between group in the absolute maximal oxygen uptake(p<0.001) 2. AT-VO₂(l/min) and AT-VO₂(ml/kg/min) in the anaerobic threshold was highest (3.71 l/min, 47.28 ml/kg/min) in Judo players, followed in order by the T.K.D players(3.29 l/min, 48.75 ml/kg/min), boxing players(2.90 l/min, 43.91 ml/kg/min) and ken-do players(2.82 l/min, 43.52 ml/kg/min). It is not significant difference in the AT-V02(ml/kg/min), but is significant difference between group in the AT-V02(l/min). (p<0.001) 3. %HRmax and %V 02max in the anaerobic threshold was not significant difference between group.
한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률
조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4
Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.
조용철,한창효 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3
The goal of the study is to find out how Judo group discipline effects on human society. To fulfil this study's necessity and accomplish its contents, I have referred to sundry records and had interviews in the body, through which I made a conclusion of the study. Here are the points of this study's conclusion. First, Yudo group discipline turned out to be helpful to the formation of cohesion between peer groups, the area of sociality. Secondly, it helps one to exert one's leadership among the peer group. Thirdly, It helps one to observe the proprieties in social life, It means that the practice of proprieties in a Judo hall is transferred to the everyday lives. Finally, It is found out that Judo group discipline helps one to be positive to others. The physical and mental health of an individual allows one to hold positiveness towards others.
운동과 식이요법을 이용한 비만성인의 체중감량에 관한 연구
조용철,안자희 龍仁大學校 1997 용인대학교 논문집 Vol.13 No.-
The purpose of this study is to investigate the effective ways of reducing the weight of fat adults. Dietic treatment and athletic treatment have been performed over a four-month period to 73 fat adults who were randomly selected from various walks of life. Through the above approach, following results could be obtained; 1) The effect that dietetic and athletic treatment have on fat adults could be maximized by performing both of the treatments simultaneously, and this method could be applied regardless in their chest circumferences. (Group A : Those who are performing dietetic treatment, Group B : Those who are eating without any regulation)
조철형,김숭평,유적용 조선대학교 생산기술연구소 1981 生産技術硏究 Vol.1981 No.-
The critical moisture content of excrements filtered has been determined to be about 200% (D. B) based on the characteristic curve for drying, obtained by pilot plant tunnel dryer method. Temperature, humidity, flow rate and thickness of the feed material, and direction of air flow had large effect on drying in the constant rate period, but had little effect in the falling rate period. The optimum operation condition for drying with tunnel dryer had been investigated.
조세형,김승철,정용균 한국중소기업학회 2004 中小企業硏究 Vol.26 No.2
전자상거래에 관한 대부분의 선행연구들은 기업의 전자상거래 채택 및 확산 요인에 초점을 두었으며, 대기업 중심의 자료를 바탕으로 연구가 수행되었다. 그러나, 기업에서의 전자 상거래 활용은 선택이 아닌 기정 사실화되었고 이제는 어떻게 활용하는가에 초점을 두어야할 때이다. 한편, 대기업을 대상으로 한 연구결과가 중소기업에 지침으로 제공되고 있으나, 중소기업이 단순히 대기업의 축소판이 아니며 많은 점에서 고유의 특성을 지니고 있기 때문에 중소기업 자체의 연구가 필요하다. 본 연구는 세 가지 측면에서 전자상거래에 환한 선행연구를 확장한다. 첫째는 많은 선행연구들이 주로 정보기술의 채택 및 확산이란 차원에서 전자상거래를 다루어 온 것에 비하여 본 연구에서는 전자상거래의 실행을 성과와 연관시켜 다룬다. 둘째는 국가경제에 커다란 비중을 차지하고 영향을 미치는 중소기업에 초점을 둔다. 끝으로, 중소기업에 적합한 전자상거래 활성화 전략을 제안하고자 한다. 연구결과 중소기업에 적합한 특유의 전자상거래 활용형태는 없으며, 기업상황에 적합한 활용형태를 찾는 것이 필요할 것으로 보인다. 한편, 정보시스템 성숙도 수준에 따라 IC실행형태가 성과에 미치는 영향에 차이가 있음을 발견하였다. 예를 들어, 비용우위 전략은 성숙도가 낮을수록 가치시스템형 IC는 성숙도가 높을수록 높은 성과를 나타냈다. Business firms are increasingly taking part in online business activities through internet as the size of the e-commerce market is rapidly growing in the recent years. Electronic commerce (EC) activities now become an essential part of the business strategy for survival as well as growth for both large enterprises and small- to medium-sized enterprises (SMEs). Previous studies on e-commerce mostly focused on the factors leading to adoption and diffusion of EC by business firms, and also have been carried out with the data from big enterprises. More often than not, the results obtained from the large business firms are used to provide the guidelines for SMEs. SMEs are, however, different from large business firms in many aspects, and need to be studied on their own. This paper extends the previous researches on EC in three aspects. Firstly, we study the e-commerce issues in the area of implementation in relation to EC performance, beyond the adoption and diffusion of IT technology which has been the research issues in many previous researches. Secondly, we focus on small and medium enterprises which comprise a large portion of national economy with significant influence. Finally, we propose desirable EC strategies for SMEs upon consideration of SMEs' characteristics.