• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2003.05a
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• pp.71-71
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• 2003

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.49-50
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• 2009

• Korean Journal of Culture and Social Issue
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• v.24 no.2
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• pp.221-250
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• 2018

The purpose of this study is to find out the causes of turnover, the causes of stay, and the effects of turnover of college graduates with early careers, based on the concept of job embeddedness and their stances. For this study, semi-structured interviews were conducted with 20 college graduates with early careers and the interviews were analyzed with phenomenological analytic research. The result of the study shows that the cause of turnover intention includes fit and link which are components of job embeddedness. More specifically, turnover intention of the interviewee is affected by fit which includes whether their ability and talent are used properly and whether their vision and culture fit well those of their organization, also affected by link which includes the formal or informal mutual relationship with coworkers and superiors. Stay intention, on the other hand, includes fit which contains satisfaction about work and organization, long-term career management. Stay intention also includes sacrifice which are anxiety about uncertain future and satisfaction about being employed. As an aspect of the effect of turnover, the satisfaction and fulfillment about work which are experienced after turnover by the interviewees and the satisfaction about coworkers and the team in which the interviewees are included offset the negative effect of turnover. The result also shows that organization should consider their workers' satisfaction about the first work, their amicable relationship, and turnover cost, to improve working and living standard of colleges graduates with early careers and to prevent them from turnover.

• The Journal of the Korean dental association
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• v.49 no.5
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• pp.260-264
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• 2011

Zirconia ($ZrO_2$) is a crystalline dioxide of zirconium. Dental zirconia blocks for CAD/CAM are usually fabricated with powders of tetragonal zirconia polycrystals (TZP) stabilized with 3mol% yttria. Because of its mechanical properties similar to those of metals and color similar to tooth, it is evaluated to attain the two purposes at a time, strength and aesthetic in prosthetic dentistry. The ability of transformation of Y-TZP from tetragonal to monoclinic helps to prevent crack propagation and contributes the increase of strength and fracture toughness. Two different types of blocks, soft and hard, are used to prepare the zirconia frameworks. The fuzzy-sintered block is difficult in machining, so pre-sintered soft 3Y-TZP block is usually used to mill by computer aided machining.

• Journal of the Korean Society for Precision Engineering
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• v.26 no.12
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• pp.102-109
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• 2009

This study proposes the structural optimization of a manifold valve. FE analysis is performed to evaluate the strength of a manifold valve. In addition, the structural optimization technique is applied to reduce its weight. In this study, the optimization method using the kriging interpolation method is adopted to obtain the minimum weight satisfying the strength constraint. The maximum stress and the weight are replaced by the metamodels. In this process, tile sample points are generated by latin-hypercube design. Optimum designs are obtained by ANSYS Workbench and the in-house program.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2013.05a
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• pp.215-215
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• 2013

임플란트 소재로서 순 타이타늄은 높은 응력이 발생하는 부위에는 그 강도가 충분하지 않은 것으로 지적되었으며, 이러한 이유로 인해서 그의 대용합금에 대한 연구가 진행되고 있다. 본 연구에서 ${\beta}$형 타이타늄 합금 Ti-32Nb-5Zr 합금을 시험재료로 선택한 다음 양극산화와 석회화 순환처리에 의해서 표면을 개질한 결과, HAp 석출이 빠르게 가속되었을 뿐만 아니라 신생골 생성량과 골결합력이 크게 개선된 결과를 보여주었다.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.9 no.5
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• pp.7-13
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• 2010

Main starting valve is one of the main parts in the control system of diesel engines, purposed for starting main engines. It is composed of ball valve, check valve, actuator, etc. The design axioms provide a general framework for design methodology. Two axioms are independence axiom and information axiom. These axioms can be applied to all design process in a general way. The first axiom is introduced to analyze and evaluate the design of a main starting valve. The design parameters(DPS) are determined sequentially by considering the independence axiom. For the structural design of a main starting valve, the strength is calculated by using finite element method. In addition, the strength of its actuator piston is evaluated.

• Journal of Korean Clinical Nursing Research
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• v.24 no.2
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• pp.127-136
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• 2018

Purpose: The aim of this study was to investigate and identify the influence of nurses' followership types and ego-resilience on job embeddedness. Methods: Self-reported questionnaires were distributed to 546 nurses working at hospitals with 400 to 700 beds in Seoul and Gangwon Province, and 520 sincere questionnaires were analyzed using SPSS / WIN ver 23.0 program. Results: The job embeddedness, ego-resilience and followership types of the participants showed significant correlation with each other. In hierarchical multiple regression analysis, nurses' followership types and ego-resilience were identified as predictors of job embeddedness (Adj. $R^2=0.34$, p<.001). Conclusion: Findings of this study indicate that nurses need to develop their followership and ego-resilience to increase job embeddedness. Future studies should explore ways to improve followership and ego-resilience.

• Journal of Korean Clinical Nursing Research
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• v.25 no.2
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• pp.198-207
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• 2019

Purpose: The purpose of this study was to provide data to establish an efficient manpower management plan so that the organization can identify the influence of organizational silence and professionalism on job embeddedness among nurses in hospital management. Methods: Self-report questionnaires were distributed to 150 nurses in hospital management who were working in general hospitals with less than 900 beds but more than 300 beds in the districts of Seoul and Gyunggi, Gangwon province. Of the questionnaires, 127 out of 150 copies were collected and 120 copies were used for final analysis. Seven were not considered sincere in the responses. Data were analyzed using SPSS ver. 22.0 statistic program, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson correlation coefficients and multiple regression. Results: Organizational silence and professionalism had significant influence on job embeddedness, which explained 43.4% of job embeddedness. Conclusion: The results indicate that in order to raise job embeddedness, it is necessary to provide various programs to change communication patterns in the nurses in hospital management, and to create environments in which nurses in hospital management can present various opinions.

• Journal of Korean society of Dental Hygiene
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• v.19 no.5
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• pp.835-843
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• 2019

Objectives: This study presents job embeddedness as the principal factor that reduces turnover intention of clinical dental hygienists. The study also promotes the utilization of job embeddedness for efficient human management in dental organizations. Methods: A self-reported questionnaire was completed by 200 dental hygienists from June 1 to July 15, 2019. Data were analyzed using SPSS 20.0. An independent t-test, a one-way ANOVA, Scheffe post-hoc test, and Pearson's correlation coefficients were employed, and a multiple regression analysis was conducted. Results: The dental hygienists scored 3.25 points for job embeddedness, 3.81 points for organizational citizenship behavior, and 3.40 points for turnover intention. The variables that influenced their turnover intention were those related to job embeddedness. These factors showed 24.6% variance among the dental hygienists. Conclusions: Efficient human management of clinical dental hygienists requires increased interaction and compatibility within dental organizations. It is also necessary to create a variety of benefits and support systems.