• 수산해양교육연구
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• 제27권3호
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• pp.656-671
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• 2015

The purpose of the present study is to examine relationships between disconnection and rejection schema, defense mechanism, and mental health in college students using structural equation modeling. The present study suggested a proposed model in which defense mechanism exerted a full mediating effect on the relation between disconnection and rejection schema and mental health. Goodness of fit tests were used to compare the proposed model against competing models. The subjects consisted of 304 college students. They completed the Young Schema Questionnaire(YSQ-SF), the Defense Style Questionnaire(DSQ), and the Mental Health Scale. The results showed that the second model had a better goodness of fit. Based on these findings, it is suggested that psychological interventions for mental health in college students should consider strategies to use more flexible and more adaptive defense mechanism style.

• 한국생산제조학회지
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• 제26권1호
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• pp.74-81
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• 2017

A crane is typically used as a means to lift and load equipment or materials. A surface vessel uses a towed object for underwater activity. Such a mechanism for dropping and lifting of equipment is necessary, and is called an overboarding unit. The present study is focused on the overboarding unit used for a crane structure. This paper deals with new overboarding mechanism design and GA-based $MATLAB^{(R)}$ optimization. By using a quadrilateral link mechanism, it is possible to set the constraint function for optimizing the GA method. The optimization with $MATLAB^{(R)}$ is followed by the $SolidWorks^{(R)}$ simulation and verification. When applying the proposed mechanism, the operator is expected to have a big advantage in safety and efficiency of operations. Furthermore, the technology developed in this study will be helpful in similar circumstances and in the proposed mechanism.

• 유통과학연구
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• 제12권1호
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• pp.5-12
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• 2014

Purpose - The general objective of this study is to explain the governance mechanisms of relational exchanges by considering both economic and relational factors. As regards the relationship between opportunism and governance mechanisms, opportunism was hypothesized as being positively related to the use of the authority mechanism, and negatively related with use of the trust mechanism. Research design, data, and methodology - Purchasing relationships between original equipment manufacturers (OEMs) and their component suppliers were chosen as the empirical setting. Purchasing specialists in each company, who interact regularly with suppliers and have the major responsibility for managing the exchange relationships with suppliers, were used as the respondents for this study. A mail survey methodology was employed to collect data in the final field survey. Results - As predicted, opportunistic behavior is found to be negatively related to the use of the trust mechanism and positively related to the use of the authority mechanism. Therefore, the result supports the proposed hypotheses. Conclusions - By integrating research streams, this study contributes to the marketing discipline by improving our understanding of when and why different mixtures of governance mechanisms are used.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2008년도 춘계학술논문발표회 논문집
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• pp.313-316
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• 2008

Nowadays, the use of high strength concrete has become increasingly popular. Thus, the theory of this study gives a definition of HSC mechanism through study factors of spalling occurrence of HSC and solutions of failure mechanism. During the fire goes on, building structure using HSC causes explosive spalling and finally it gets to the breaking of the structure down. As a result of this failure mechanism, it remains to be investigated to prevent from explosive spalling of HSC and needs to provide basic problems of HSC at high temperature.

• 로봇학회논문지
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• 제14권4호
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• pp.326-332
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• 2019

In the case of conventional soft robots, the basic stiffness is small due to the use of flexible materials. Therefore, there is a limitation that the load that can bear is limited. In order to overcome these limitations, a study on a variable stiffness method has been conducted. And it can be seen that the jamming mechanism is most effective in increasing the stiffness of the soft robot. However, the jamming mechanism as a method in which a large number of variable act together is not even theoretically analyzed, and there is no study on intrinsic principle. In this paper, a study was carried out to increase the stability of the force chain to increase the stiffness due to the jamming transition phenomenon. Particle size variables, backbone mechanisms were used to analyze the stability of the force chains. We choose a jamming mechanism as a variable stiffness method of a soft robot, and improve the effect of stiffness based on theoretical analysis, modeling FEM simulation, prototyping and experiment.

• 대한간호학회지
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• 제32권4호
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• pp.447-458
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• 2002

The primary purpose of this study is to provide a useful insight for developing effective teaching and student counseling methods by understanding the relationship between four preference patterns of MBTI personality types and EWHA defense mechanisms of nursing college students. Method: The data used in this research were collected administrating EWHA defense mechanism test and MBTI personality type instrument to 195 nursing students in the period of November 3 through September 16 in 2000. Collected data were analysed by pc-SPSS 10.0. Result: Three general conclusions were drawn from the study results: (1) in terms of personality type, 'Extraversion', 'Sensing', 'Thinking', and 'Judgement' types showed high frequency respectively; (2) in terms of defense mechanism, 'Identification' showed the highest score, and then 'suppression' scored next followed by 'Humor'. However, 'Acting out' showed the lowest average score, and then 'Projection' followed by 'Denial'; (3) Based on the relationship between defense mechanism and four MBTI preference patterns, it can be drawn that students with the preference of 'Extraversion' usually use defense mechanism of 'Altruism', 'Sublimation', 'Distortion', 'Controlling', and 'Humor'. In comparison, students with the preference of 'Introversion' often use the defence mechanism of 'Evasion' and 'Projection'. Conclusion: The study results can be utilized in both fields of education and counseling: (1) in the field of education, this study can provide a basis for developing a suitable teaching method for each personality types of nursing students; (2) for counseling practitioners, the results of this study provide the useful insights to understand nursing college students' communication skills, behavior patterns, and ability of coping with problems in the process of counseling.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.916-919
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• 2002

Cam mechanism is one of the common devices used in lots of automatic machinery. This paper introduces to an inverse cam mechanism. The inverse cam mechanism has a reverse structure as compared with common cam mechanism. For shape design of the inverse cam the approach used in this paper is an instant velocity center method that find the contact point between cam and roller at any contact time. And a computer program is developed for shape design and simulation by visual $C^{++}$ language. As the results, this paper presents two examples for the shape design of the inverse cam mechanism in order to prove the accuracy of the design procedures.

• 한국정밀공학회지
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• 제14권11호
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• pp.42-49
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• 1997

The extent of absorption and transmitance of the light that passes through some material is changed as the wavelength of the light varies, and which makdes it possible to estimate characteristics of the material. Spectrometer is a measurement system that can analyze the characteristics of material by using this principle. Its application field is so wide that it can be applied to all the arease that are concerned with analyzing materials : biological, environmental, medical and chemical area etc. This study is focused on developing precision sine drive mechanism for grating monochromator which is the most important part of the spectrometers. It is designed to be simple in struicture. It is achieved to derive basic principles to manipu- late precision sine drive mechanism : it should be aligned with a condition that .beta. , the angle between grat- ing normal and grating rod should be the same as .gamma. , the one between moving nut's normal and sliding guide. And also, it's found that the mis-alignments of the grating and mirrors are not the main factor in guaranteeing the linearity of sine drive mechanism. Performance evaluation is achieved by a standard sample by comparing experimental results with standard values. It results in wavelength accuracy of .+-. 0.5nm and resolution of 1nm. Conclusively, it can be verified that the sine drive mechanism developed in this study is not only simple in structure, but also stable and excellent in performanes.

• 대한화학회지
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• 제68권3호
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• pp.139-145
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• 2024

This study aims to elucidate the mechanism involved in the hydrolysis of the hexacyanoferrate(III) complex ion (Fe(CN)₆^3-) and the mechanism leading to the formation of Prussian blue (Fe^III₄[Fe_II(CN)₆]₃·xH₂O, PB) in acidic aqueous solutions at moderately elevated temperatures. Hydrolysis constitutes a crucial step in generating PB through the widely used single-source or precursor method. Recent PB syntheses predominantly rely on the single-source method, where hexacyanoferrate(II/III) is the exclusive reactant, as opposed to the co-precipitation method employing bare metal ions and hexacyanometalate ions. Despite the widespread adoption of the single-source method, mechanistic exploration remains largely unexplored and speculative. Utilizing UV-vis spectrophotometry, negative-ion mode liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS), and a devised reaction, this study identifies crucial intermediates, including aqueous Fe^2+/3+ ions and hydrocyanic acid (HCN) in the solution. These two intermediates eventually combine to form thermodynamically stable PB. The findings presented in this research significantly contribute to understanding the fundamental mechanism underlying the acid-catalyzed hydrolysis of the hexacyanoferrate(III) complex ion and the subsequent formation of PB, as proposed in the sequential mechanism introduced herein. This finding might contribute to the cost-effective synthesis of PB by incorporating diverse metal ions and potassium cyanide.

• 동의신경정신과학회지
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• 제19권3호
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• pp.23-34
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• 2008

Objective: The purpose of this study was to investigate characteristics of the defense mechanism of oriental medicine students by using Ewha Defense Mechanism Test(EDMT) preliminarily. Method: We described the characteristics of the defense mechanism of oriental medicine students and compared the scores of EDMT with standard group. We analysed the differences of defense mechanism by sex (male, female) and age($\leq$29 and $\geq$30 yrs old) within oriental medicine students. The score of EDMT were verified by examination of one sample t-test and unpaired t-test. Results and Conclusions: First, there was no Major Defense Mechanism in oriental medicine students. Second, oriental medicine students had more defensive, passive inclination and used Evasion and Show-off more frequently. Third, the differences within oriental medicine students depended on age rather than sex. The younger students used immature and neurotic defense mechanisms more frequently, and the older students had more defensive and passive inclination.