• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2003.05a
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• pp.1-1
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• 2003

No Abstract, See Full Text

• Electrical & Electronic Materials
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• v.11 no.2
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• pp.149-152
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• 1998

• Korea journal of population studies
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• v.14 no.2
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• pp.71-77
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• 1991

• The Korean Journal of Food And Nutrition
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• v.20 no.4
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• pp.494-500
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• 2007

The purpose of this study was to examine the levels of satisfaction, and awareness, as well as evaluations of internship programs between major and non-major students in food and nutrition. The survey was conducted via questionnaire to 80 major and 113 non-major students in food and nutrition who had finished an internship. For the primary internship facilities, the proportions were 51.3% in foodservice for the major group and 57.4% in business & industry for the non-major group. For the internship period, the proportions were 71.2% for under 2 weeks in the major group, and 42.9% for $2{\sim}4$ weeks in the non-major group(p<0.001). The proportions of students who were provided orientation from a professor(p<0.001), and visiting guidance by a professor(p<0.001), were 40.5% and 35.4%, respectively, in the major group and 73.4% and 82.1 %, respectively, in the non-major group. The proportions answering that the internship was a necessity were 95.0% in the major group and 75.2% in the non-major group(p<0.001). The major group had significantly higher satisfaction scores for location of the internship facility, internship period, and connection between education and practice as compared to the non-major group. However, the satisfaction score for professor's guidance during the internship was significantly lower in the major group than the other group. The evaluation score for 'I did my best when doing my work' was significantly higher in the major group than the non-major group. The major group had significantly higher awareness scores for the internship's degree of assistance in improving skills, making use of knowledge, and adapting to the field, as compared to non-major group. In conclusion, students majoring in food and nutrition faithfully participated in their internship programs, with higher degrees of satisfaction and awareness, and higher evaluations. However, more effective internship program with intensified and developed guidance by professor are needed.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1998.10a
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• pp.268-268
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• 1998

• Bulletin of the Korean Mathematical Society
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• v.42 no.3
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• pp.623-629
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• 2005

Inclusion relations under certain integral operators are proved for k-uniformly starlike functions. These results are also extended to k-uniformly convex, close-to-convex, and quasi-convex functions

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.4
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• pp.2450-2464
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• 2015

This study is a professor of creative behavior and roles of teachers and teacher-student interactions between was conducted to analyze the impact on the problem solving skills of middle school students. Study, professor of creative actions and roles of teachers showed significant influence on middle school students in problem-solving skills, teacher-student was found that a significant effect on the interaction between. In addition, teacher-student interaction was found between the effects of a significant effect on middle school students problem-solving skills, creative roles of teachers and professors behavior was confirmed that a significant mediating effect among middle school students in problem-solving skills. The results of this study performed a professor of creative behavior and the role of teachers and teacher-student liver and suggest to improve the interaction education and training programs are needed, that can help in problem-solving skills and theoretical training of junior high school as a practical implication offers a number of implications for school education.

• Journal of Mechanical Science and Technology
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• v.15 no.5
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• pp.671-680
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• 2001

Boundary condition is one of the major factors to influence the numerical stability and solution accuracy in numerical analysis. One of the most important physical boundary conditions in the flowfield analysis is the wall boundary condition imposed on the body surface. To solve a two-dimensional Euler equation, totally four numerical wall boundary conditions should be prescribed. Two of them are supplied by the flow tangency condition. The other two conditions, therefore, should be prepared additionally in a suitable way. In this paper, four different sets of wall boundary conditions are proposed and then applied to solve high-speed flowfields around a quarter circle geometry. A two-dimensional compressible Euler solver is prepared based on the finite volume method. This solver hires three different upwind schemes; Steger-Warmings flux vector splitting, Roes flux difference splitting, and Lious advection upstream splitting method. It is found that the way to specify the additional numerical wall boundary conditions strongly affects the overall stability and accuracy of the upwind schemes in high-speed flow calculation. The optimal wall boundary conditions should be also chosen very carefully depending on the numerical schemes used to solve the problem.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1996.06c
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• pp.519-527
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• 1996

Most operation related to the application granular agrochemicals in korea are manual and labour consuming. As a multipurpose granular applicator, a pneumatic granular applicator that can be attached to conventional ride -on machines for paddy field was designed in this study. Experiments and simulations were carried out for determine in the design factors with one fertilizer (DongBu 21-17-17) and one pesticide (SamKong Ivi). The maximum terminal velocity of granular chemicals was estimated as 14.2m/s. A better distribution pattern was obtained at the diffuser having only deflectors without dividing guides. The diffuser spacing 1.0m for the fertilizer and the diffuser spacing 0.8m for the pesticide at the boom height over 0.80m were acceptable for the uniform distribution. In the case that the forward speed of ride-on machines was 0.7m/s, the groove opening and the roller speed of the selected metering device were13mm -15mm at 2 rps for the fertilizer, and 9 mm-11mm at 0.25rps or the pesticide. This study suggested a method of developing a pneumatic applicator for granular agrochemicals.

• Journal of Biosystems Engineering
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• v.26 no.2
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• pp.189-196
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• 2001

바이오 센서 개발에 대한 주 동기는 건강보호 산업이었지만, 최근의 연구 동향은 농업 및 생물 생산 시스템 분야로 확산되고 있다. 바이오 센서의 본질과 기능에 관한 일반적인 논의가 간단히 제시되었고, 제자들에 의해 연구된 및 종류의 바이오 센서 예와 그들의 적용에 대해 소개하였다.