• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.7 no.1
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• pp.3-13
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• 1996

All human being can not exist by oneself That is, all human being depend on intimate attachment for their survival. Physical and psychological powers are prerequisites fir one's survival and these serve important functions hi interpersonal relationships. There are two kinds of powers. One is positive power which helps one survive effectively. Another one is negative power which disturbs one's effective survival. In this paper, the author reviewed the precept of 'trust' which is described in 'Bible' and oriental classical books such as 'The Analects of Confuicus' and 'Tao Te Ching' etc. and tried to integrate this precept with the importance in everyday life, 'How to communicate' is closely related to 'trust' and one's speech is closely related to one's thinking or emotion. Thus in order to keep trustful communication, one has to introspect oneself to understand one's own emotional reaction.

• Journal of the Korea Convergence Society
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• v.8 no.1
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• pp.195-201
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• 2017

Social enterprises are social mission-oriented entities, despite working entrepreneurial way. Mission orientation is recognized as a strong management tool that can motivate employees and remain there to accomplish it. This study investigated the role of social mission as well as job insecurity and job satisfaction as factors on retention of women in social enterprises. Binominal Logistic regression analysis is used. The result showed that 82.3% of respondents had intention to work at social enterprise. Also, social mission orientation of female workers had an effect of buffering the negative relationship between job insecurity and retention. These results suggest that social enterprises need to consider implicit working conditions as much as explicit work conditions for female-friendly jobs. Binominal Logistic regression analysis is used.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.30 no.4
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• pp.114-122
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• 2002

The integration of the landing gear system is a complex relationship between the many conflicting parameters of shock absorption, minimum stow area, complexity, weight and cost. Especially ground impact load and dynamic behaviors greatly influence design load of landing gear components as well as load carrying structural attachment. This study investigates ground impact load and dynamic behaviors of the T-50 landing gear system using ADAMS. Taking into account for various operational/environmental conditions, an analysis of shock absorbing characteristics at ground impact is performed with experience derived from a wide range of proprietary designs. Analytical results are presented for discussing the effects of aircraft horizontal and vertical speed, landing attitudes, shock absorbing efficiency. This analysis leads us to the conclusion that the proposed program is shown to be a better quantitative one that apply to a new development and troubleshooting of the landing gear system.

• Journal of Biosystems Engineering
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• v.5 no.2
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• pp.26-39
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• 1980

A study was investigated to find out the mechanical optimum conditions of power tiller-plow system on both paddy field and upland. Mathematical model was developed for the theoretical analysis of this system and the experimentation on the field was carried out with two different sizes of 5PS and 8PS power tiller equipped with rubber tire. 1) The relationship between the plowing depth and draft resistance of the power tiller-plow system was a quadratic function. 2) The minimum point of the specific draft resistance of the 5 PS plow was found at the smaller plowing depth than that of 8 PS plow, therefore we can find that the curved surface of 5PS plow bottom should be improved for the effective plowing operation. 3) As the improvement of the mechanical balance by the desirable change of the curved surface of plow bottom, the relative position of hitch point and dimension of plow beam would be realized, the 5 PS power tiller could be used to plow deeply (about 16-17cm). 4) The virtual acting point of the total draft resistance on the plow bottom approached to the land side as the plowing depth increased. 5) The resultant of vertical reaction force $R_2$ on the landside was increased with the plowing depth, while the vertical reaction force $R_1$ on the wheel was decreased as the slope angle of the body of power tiller increased. 6) For the effective plowing operations ; a) The slope angle of the body should be as small as possible. b) The diameter of the wheel should be as small possible. c) The horizontal and vertical distances $l_2, h_1$ between the wheel axis and plow bottom should be as large as possible. 7) To use the 5PS power tiller as the major unit of agricultural machinery, the curved surface of the 5 PS plower bottom and the mechanism of attachment between the power tiller and the plow should be changed as the indications of this study, and in addition to these, the new operation method of the field work should be developed.

• Korean Journal of Childcare and Education
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• v.10 no.5
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• pp.273-298
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• 2014

The purpose of the study was to examine the image types of the traditional child rearing by mothers with infancy and early childhood through Q-methodology. To conduct that, Q-group was first formed from mothers who raised their child in traditional way after their brainstorming about the method and interviewing them. Based on the subject's shared statements, Q-standard was made with 40 subjects. The 40 subjects were asked to grade each statement from one to nine and then their responses were analyzed by QUANL program. The image types were classified into 4 groups. There were 'Type 1: Relationship-oriented parenting through harmony' 'Type 2: Archetypal Parenting based on the Korean traditional values,' 'Type 3: Practice-oriented Parenting to respect life,' and 'Type 4: Attachment Parenting modern variants necessary.' This study serves as a momentum to see the impact of traditional child rearing on modern child upbringing by examining mother's viewpoints on traditional child rearing.

• Journal of Periodontal and Implant Science
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• v.25 no.2
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• pp.290-300
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• 1995

Tooth mobility is one of the most important clinical parameters in examination, diagnosis, prognosis and treatment planning procedure. In order to determine the differences of tooth mobility according to radiographical bone level, clinical root length, clinical crown/root ratio, and bleeding on probing, 90 male adults with periodontal disease and 10 male adults with periodontal health($25{\sim}45$ years old) were selected through clinical examinations including occlusal relationship, probing depth, attachment level, and bleeding on probing. On the mandibular anterior teeth, standard periapical radiographs were taken, and tooth mobility was measured by Periotest(Siemens Co., Germany). The radiographic bone level of individual tooth was evaluated as coronal 1/3, middle 1/3, and apical 1/3 to anatomical root length, and clinical crown length from incisal edge to bone level and clinical root length from bone level to root apex were measured with Boley gauge, and subsquently clinical crown/root ratio was calculated. The difference of tooth mobility(Periotest value) according to radiographical bone level, clinical root length, clinical crown/root ratio, and bleeding on probing was statistically analyzed by unpaired Student t-test. Tooth mobility was significantly higher in bleeding group than non-bleeding group on probing in the teeth radiographic bone level of middle 1/3, with clinical root length longer than 6mm, and with clinical crown/root ratio over 0.3(p<0.01). But there was no statistical difference in tooth mobility between bleeding group and non-bleeding group on probing in the teeth with radiographic bone level of apical 1/3, with short clinical root length less than 5mm, and with clinical crown/root ratio under 0.2(p>0.05). The results note that the tooth mobility depends on clinical root length, clinical crown/root ratio and gingival inflammation, and in the teeth with relatively good alveolar bone support gingival inflammation is one of the most important factors that affect tooth mobility.

• Management & Information Systems Review
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• v.33 no.3
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• pp.59-76
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• 2014

This research tries to present the role of Jung, which is well known as Koreans' traditional emotional attachment in service recovery process. Prior research on the service recovery have focused on relationship among perceived justice, recovery satisfaction and forgiveness. Especially perceived justice including distributive, procedural, and interactional justice has addressed as most important antecedents of recovery satisfaction. Although the pivotal role of emotional factors for successful service recovery has agreed by many researchers, relatively little attention has been paid to this issue. During the service recovery process, even if customer perceived recovery effort from service provider as justice one, they might feel displeasure or dissatisfaction. It means prior researches have underestimated the importance of emotional aspect, especially for Korean perspectives. In this study, we examined customer reactions to service failure and recovery process in restaurant service settings. Specifically, we focused on the moderating effect of 'Jung' on the paths between perceived justice and outcome variables such as forgiveness and recovery satisfaction.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.1
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• pp.203-209
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• 2009

The purpose of this study is to develop a minimally constraint joint angle measurement system for the feedback control of FES (functional electrical stimulation) locomotion. Feedback control is desirable for the efficient FES locomotion, however, the simple on-off control schemes are mainly used in clinic because the currently available angle measurement systems are heavily constraint or cosmetically poor. We designed a new angle measurement system consisting of a magnet and magnetic sensors located below and above the ankle joint, respectively, in the rear side of ipsilateral leg. Two magnetic sensors are arranged so that the sensing axes are perpendicular each other. Multiple positions of sensors attachment on the shank part of the ankle joint model and also human ankle joint were selected and the accuracy of the measured angle at each position was investigated. The reference ankle joint angle was measured by potentiometer and motion capture system. The ankle joint angle was determined from the fitting curve of the reference angle and magnetic flux density relationship. The errors of the measured angle were calculated at each sensor position for the ankle range of motion (ROM) $-20{\sim}15$ degrees (dorsiflexion as positive) which covers the ankle ROM of both stroke patients and normal subjects during locomotion. The error was the smallest with the sensor at the position 1 which was the nearest position to the ankle joint. In case of human experiment, the RMS (root mean square) errors were $0.51{\pm}1.78(0.31{\sim}0.64)$ degrees and the maximum errors were $1.19{\pm}0.46(0.68{\sim}1.58)$ degrees. The proposed system is less constraint and cosmetically better than the existing angle measurement system because the wires are not needed.

• The Journal of Korean Academy of Prosthodontics
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• v.52 no.1
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• pp.27-33
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• 2014

Purpose: The purpose of this study was to investigate the food impaction between implant prostheses and adjacent natural teeth. Materials and methods: For this study, 51 patients with food impaction were selected and investigated mobility, tightness of contact area, gingival index, plaque index, attachment loss, alveolar bone level, proximal caries, marginal ridge distance and occlusal relationships. Results: Food impaction was found in the upper teeth (60.7%) more than the lower teeth (39.2%). Food impaction was occurred on mesial side of implant prostheses (86.2%) more than distal side (13.7%). Food impaction was mostly found in loose or open contact area (94.2%). Food impaction was frequent on stepped relationship between implant and adjacent teeth. Conclusion: Treatment plan should include proper adjacent and antagonistic occlusal plane and occlusal surface, to prevent food impaction, and the plan should include less adjacent tooth mobility with proper tightness between implant prostheses and adjacent teeth.

• Human Ecology Research
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• v.52 no.3
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• pp.285-299
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• 2014

This study was conducted to analyze the reasons for aging in place through an in-depth interview, which is a qualitative research method. The subjects of the study were 17 adults over the age of 60 years who preferred aging in place. Interviewees were asked questions about their experiences of past living, present living, and the future place where they want to live in and the reasons for their choice. In the in-depth interviews conducted from September 2012 to May 2013 for data collection the research participants were asked open-ended questions about their past living experiences and future living plan and were given the freedom to answer the questions in their own words. The results of the in-depth interviews revealed the following reasons for aging in place: 1) familiarity due to long-term residence, 2) strong attachment to the place and the neighbors, 3) satisfaction of present house, 4) personal stories associated with present house, 5) feeling of living in their own home, 6) convenience of the neighborhood for living, 7) caring relationship with the neighbors, 8) fear of a change of environment, and 9) resignation to the rest of their life. The findings indicated that residential types in old age need to be taken into account for both aging in place which referring to choosing to live where one has lived for years and referring to involuntarily staying where one has lived for years.