• Title/Summary/Keyword: Graduate School Program

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A Study on the Design of Ratchet Wheel Using Automatic Design Program and Finite Element Analysis (자동설계프로그램과 유한요소법을 활용한 래칫 휠 설계에 관한 연구)

  • Kim, Min-Ju;Lee, Seung-Su;Jeon, Eon-Chan
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.9
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    • pp.1882-1887
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    • 2002
  • This study is to develop a automatic design program of mechanical elements as the integrated system which can create automatically 3-dimensional solid and surface model using visualLISP. By the applying developed system to CAE system, the following objects are realized. At first, constructing the library of automatic design program for unexperienced design engineer, the 3-dimensional modeling of mechanical elements can be obtained easily. at second, the 3-dimensional model for ratchet wheel design is created by finete element model of CAE system and the optimal design condition of key way.

Development of the Coil Spring Design Program for Spring Operating Mechanism (스프링조작기 개발을 위한 코일 스프링 설계 프로그램 개발)

  • Kim, Min Soo;Jun, Chul Woong;Sohn, Jeong Hyun
    • Journal of the Korean Society for Precision Engineering
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    • v.34 no.4
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    • pp.281-285
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    • 2017
  • Since the performance of the spring operating mechanism for a circuit breaker mainly depends on the dynamic behavior and mass of the coil spring, its dynamic analysis is required to evaluate the performance of the spring operating mechanism. In this study, a coil spring design program is developed for the spring operating mechanism. An experimental approach is used to find the variables satisfying the design constraints' requirements. The coil spring is formed by using a lumped mass spring model. This program offers reference data for the design of coil springs and for the spring operating mechanism.

Development of pSJE6c, an Expression Vector for Kimchi Lactic Acid Bacteria, and Heterologous Gene Expression Using the Vector (김치유산균용 발현벡터 pSJE6c 개발과 이를 이용한 외래 유전자 발현)

  • Lee, Kang-Wook;Park, Ji-Yeong;Lee, Ji-Yeon;Lee, Hwang-A;Baek, Chang-Un;Jo, Hyeon-Deok;Kim, Joo-Yeon;Kwon, Gun-Hee;Chun, Ji_Yeon;Kim, Jeong-Hwan
    • Microbiology and Biotechnology Letters
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    • v.37 no.4
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    • pp.389-398
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    • 2009
  • Development of expression vectors is important for the basic and applied researches on kimchi LAB (lactic acid bacteria). An expression vector, pSJE6c was constructed by inserting P6C promoter sequence from Lactococcus lactis into pSJE, a shuttle vector for E. coli and Leuconostoc species. To test the efficiency of pSJE6c, aga ($\alpha$-galactosidase) and lacZ ($\beta$-galactosidase) genes were expressed in Lactobacillus brevis 2.14. Compared to the pSJE, expression levels of both genes were increased, indicating P6C promoter was better than indigenous promoters. Enzyme activities of L. brevis cells harboring pSJE6caga (pSJE6c with aga) or pSJE6Z (pSJE6c with lacZ) were 1.5-2 fold higher than those with pSJEaga (pSJE with aga) or pSJEZ (pSJE with lacZ). More RNA transcripts were detected in cells harboring pSJE6c based recombinant plasmid. The results indicated that heterologous gene expressions in kimchi LAB could be improved significantly by use of efficient expression vectors.

Effects of Appearance Stress and Appearance Management Behavior on Job-seeking Stress among Male University Students (남자대학생의 외모 스트레스와 외모관리행동이 취업 스트레스에 미치는 영향)

  • Kang, Hyun-Ju;Choe, Hye Jeong;Kim, Joo Hyun;Chae, Young Ran;Kang, So Yean;Lee, Sun Hee;Kim, Won Hee
    • Journal of the Korean Society of School Health
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    • v.31 no.2
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    • pp.108-116
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    • 2018
  • Purpose: The purpose of this study was to investigate the effects of appearance stress and appearance management behavior on job-seeking stress among male university students. Methods: The participants of this cross-sectional and descriptive study were 158 male students attending a university in K Province who completed a self-report structured questionnaire. The survey period was from September 19th to November 9th, 2017. Data were analyzed using descriptive statistics, independent t-test, one-way ANOVA, correlation and multiple linear regression analyses with the SPSS statistics 23 program. Results: Job-seeking stress showed significant differences according to BMI (F=2.55, p=.042) and pocket money (F=3.08, p=.049). The results of the regression analysis showed that grade (${\beta}=8.93$, p=.008), pocket money (${\beta}=-5.11$, p=.029), appearance stress (${\beta}=.52$, p<.001), and appearance management behavior (${\beta}=.25$, p=.001) were significant factors affecting jog search stress. Conclusion: The findings of this study suggest that variables such as grade, pocket money, appearance stress, and appearance management behavior significantly explain job-seeking stress among male students in college. Therefore, it is necessary to develop a program to reduce job-seeking stress for senior male students who are preparing for employment before graduation. In addition, when organizing a program to reduce job-seeking for male university students, it is necessary to help them have a more positive evaluation of their appearance and pursue proper appearance management behaviors.

Case Study of Informal Institute-Public School Collaboration in Environmental Education (환경교육에서 지역사회단체와 학교의 협력 사례 연구)

  • Kim, Su-Yeon;Kim, In-Ho;Kim, Jong-Wook
    • Hwankyungkyoyuk
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    • v.18 no.3 s.28
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    • pp.19-32
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    • 2005
  • This paper examines procedure of informal institute-public school collaboration in an elementary school and analysis environmental effects of informal institute-public school collaboration that follows up curriculum based environmental education programs. The purpose of this program is to improve environmental knowledge, attitudes of elementary students. Partnership between informal environmental Institute(NGO's) and public elementary school teachers established through program. Teachers are encouraged to be involved in student's activities and program assesment. The program we discuss here is a community collaboration project that combines environmental and outdoor education based on school curriculum and student's regional properties. The aim of the study was to describe environmental educational-based school-community partnerships and to examine the advantages and limitations for such collaborations. Qualitative and Quantitative Data are collected and analysed. Outcomes of this program are very positive. Students who were participated in this program gained more environmental awareness, attitude, knowledge, skills and affection to their region. More this programs were helpful to teachers who were participated. Further study needs to practice an exemplary collaboration and development of local school-community partnerships, which yields a blueprint for more productive collaboration in other communities.

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A Clinical Study of Art Therapy for Children Who Witnessed a Tragic Accident (충격적 사고를 목격한 아동에 대한 미술치료 사례)

  • Kim, Sun-Hyun;Chang, Young-Yoon;Kim, Boong-Nyeun;Kwon, Bok-Ja;Jang, Eun-Hee
    • Journal of the Korean Society of School Health
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    • v.23 no.2
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    • pp.143-150
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    • 2010
  • Purpose: This study aims to examine what can be seen in children's paintings, their common characteristics, and what role art therapy plays in diagnosing the post-traumatic stress disorder in children who experienced trauma, through an art therapy program among elementary school students that witnessed the death of parents from a fire drill accident. Methods: A program of three times of art therapy was progressed among 34 children who witnessed a fire accident. Revised Children's Manifest Anxiety Scale (RCMAS) was used for comparative analysis of art therapy results. Results and Conclusion: First, children who had the possibility to develop post-traumatic stress disorder were found through art therapy. Second, an opportunity to express themselves were given to children who refused psychological tests or treatment through art therapy.

Influencing Factors on the Health Promotion Behaviors of North Korean Refugee Adolescent in a Specialization School (일개 특성화 학교 북한이탈 청소년의 건강증진행위에 영향을 미치는 요인)

  • Jun, Eunkyoung;Lee, Jinhwa;Kim, Soon-Lae;Kang, Min-Jeoung;Kwon, InSook
    • Korean Journal of Health Education and Promotion
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    • v.30 no.3
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    • pp.13-23
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    • 2013
  • Objectives: This study was conducted to find out health behaviors and health promotion behaviors and their influencing factors among North Korean refugee adolescents. Methods: All the 139 students registered in a specialization school which provided regular school curriculum for the North Korean refugee adolescents participated in the survey. Collected data were analyzed by descriptive statistics, t-test, ANOVA, and multiple regression analysis. Results: Current smoking, alcohol drinking and experience of depression in North Korean refugee adolescents were more prevalent than those of South Korean adolescents. Self-esteem, self-efficacy and social support were identified as factors affecting health promotion behavior. Conclusions: Health promotion program is needed to reduce the North Korean refugee adolescents' depression and to stop smoking and drinking. In the process of creating these programs, of creating program, we should consider self-esteem, self-efficacy and social support in the educational method to make these programs be effective.

User Preference based psersonalized Elotronic Program Guide (사용자 선호도 기반의 TV 프로그램 추천 기법)

  • Yoon, Hyun-Ho;Lee, Seong-Jin;Kang, Young-Gil;Lee, Soo-Won;Kim, Hyun
    • Proceedings of the Korean Information Science Society Conference
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    • 2005.07b
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    • pp.730-732
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    • 2005
  • 디지털 방송이 본격적으로 시작되고 각 가정에 디지털 TV의 보급이 많이 이루어짐에 따라 사용자들이 시청할 수 있는 채널 및 프로그램의 수는 기존의 공중파 환경과 비교하여 폭발적으로 증가하였다. 채널의 수가 수백 개로 늘어나기 때문에 사용자가 자신이 원하는 프로그램을 찾기 위해서는 리모콘을 누르거나 방송 편성표를 검색하는 것과 같은 많은 시간과 노력을 필요하다. 따라서 이러한 문제점을 해결하기 위해서는 사용자의 프로파일과 선호도 정보를 분석하여 사용자의 취향에 적합한 프로그램을 추천해줄 수 있는 방법이 필요하다. 본 논문에서는 수백 개의 채널에서 방송되는 프로그램 및 사용자의 선호도 정보를 분석하여 사용자가 원하는 프로그램을 추천해주고 시청 히스토리를 분석하여 사용자 모델을 동적으로 갱신하는 기법을 제안한다.

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Hydrodynamic design of an underwater hull cleaning robot and its evaluation

  • Lee, Man Hyung;Park, Yu Dark;Park, Hyung Gyu;Park, Won Chul;Hong, Sinpyo;Lee, Kil Soo;Chun, Ho Hwan
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.4 no.4
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    • pp.335-352
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    • 2012
  • An underwater hull cleaning robot can be a desirable choice for the cleaning of large ships. It can make the cleaning process safe and economical. This paper presents a hydrodynamic design of an underwater cleaning robot and its evaluation for an underwater ship hull cleaning robot. The hydrodynamic design process of the robot body is described in detail. Optimal body design process with compromises among conflicting design requirements is given. Experimental results on the hydrodynamic performance of the robot are given.