• Korean Journal of Culture and Social Issue
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• v.26 no.2
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• pp.99-119
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• 2020

The purpose of this study was to construct and test a hypothetical model about impact of childhood trauma on Relationship Addiction of Korean adults the multiple mediating effects of rejection sensitivity and internalized shame. A purposive sample of 465 Korean adults was recruited from three provincial areas. The collected data were then analyzed using SPSS 23.0 and AMOS 23.0 programs. For data analysis, descriptive statistics and structural equation modeling were performed. Multiple mediating effects analysis using phantom variable and bootstrapping were implemented to verify the mediating effect of the research model. We found no significant direct effect of childhood trauma on relationship addiction, but the effects of childhood trauma on Relationship Addiction were successively multi-mediated by internalized shame and rejection sensitivity (B=.265, p<.01), and single-mediated by internalized shame (B=.496, p<.01). Based on the results of this study, it can be suggested that in order to prevent relationship addiction of adults, it is necessary to first explore whether he has experienced childhood trauma and thereby has not only internalized shame but also rejection sensitivity.

• Journal of the Korean Geotechnical Society
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• v.37 no.10
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• pp.27-40
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• 2021

The construction method to prevent the frost heave or thaw settlement is called the ground stabilization method, and the thermo-syphon is one of the typical ground stabilization methods. The thermo-syphon has recently been developed with a simple analysis model and thermal analysis has been carried out, but the frost heave of frost susceptible soil was not considered. This study was conducted using ABAQUS internal user subroutine to develop the numerical analysis model (Coupled thermo-mechanical) that can simultaneously perform thermal analysis for the temperature change of the soil according to the thermo-syphon and structural analysis to predict the frost heave of the soil accordingly. As a result of the numerical analysis, the frost heave of the soil decreased as the performance of the thermo-syphon increased. As for the main results, when the thermo-syphon which has contain 25%, 50%, and 100% of refrigerant filling ratio was applied, the reduction ratio of the frost heave was 5.5%, 14.4%, and 21% respectively.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.248-261
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• 2021

The purpose of this study is to verify the mediating effect of rejection sensitivity and relationship addiction in the relationship between abandonment anxiety and psychological dating violence. For this purpose, data of 400 adult were collected and analyzed, and the structural equations were used to verify them. The measurement tools were the Abandonment Anxiety Scale, the Rejection Sensitivity Questionnaire Scale, Relationship Addiction Questionnaire-30 and Psychological Dating Violence Scale, which were the Revised Conflict Tactics Scales-2 and Appraisal of Partner Control Scale. The results of the study are as follows: First, there was a significant corelation among abandonment anxiety, rejection sensitivity, relationship addiction, and psychological dating violence. Second, there was no direct effect on the relationship between abandonment anxiety and psychological dating violence, but it had an effect on psychological dating violence by double mediating rejection sensitivity and relationship addiction. Based on these results, we confirmed the psychological path that abandonment anxiety affects psychological dating violence, and discussed the need for therapeutic intervention and educational approach in negative interpersonal patterns that are not visible.

• Journal of the Korean Geotechnical Society
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• v.26 no.7
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• pp.71-80
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• 2010

Korea is considered to be a seasonal frozen soil area that thaws in the spring, and freezes in winter. In the current design codes for anti-freezing layer, the thickness of anti-freezing layer is calculated by the depth frozen due to the temperature condition. Therefore, there is a tendency of over-design and applying uniform thickness without the consideration of thermal stability, bearing capacity and frost susceptibility of materials. So, it is essential to study the structural appropriateness of pavement layer and bearing capacity besides the seasonal and mechanical properties of pavement materials to take an appropriate and reasonable design of the road structure. In this paper, the evaluation of frost susceptibility on subgrade, ant-freezing layer, subbase was conducted by means of the mechanical characteristics and model experiment. The temperature, heaving amount, unfrozen water contents and freezing depth of soil samples, the subgrade, anti-freezing layer, subbase soils of road construction site were measured to determine the frost susceptibility.

• Korean Journal of Microbiology
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• v.54 no.3
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• pp.200-207
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• 2018

At high salt concentration, glycine betaine is transported into Bacillus subtilis and growing rate of the cell is not suppressed. Also according to recent studies, cell growth is maintained normal growth rate at low temperature. Low temperature results in a stress response of Bacillus subtilis that is characterized by strong repression of major metabolic activities such as translation machinery and membrane transport. In this regards, genes showing cold sensitive phenotype are cold-induced DEAD box RNA helicases (ydbR, yqfR) and fatty acid desaturases (bkdR, des). Therefore to understand the effect of glycine betaine on cold growth of Bacillus subtilis, we investigated the effect of glycine betaine on growth rate of these deletion mutants showing cold sensitive phenotype. Glycine betaine strongly stimulated growth of wild type Bacillus subtilis JH642 and deletion mutants of ydbR and yqfR at $20^{\circ}C$ (190~686 min $T_d$ difference). On the other hands, glycine betaine does not show growth promoting effects on deletion mutants of bkdR, and des at cold conditions. Same cold protectant growth results were shown with the precursor choline instead of glycine betaine. We investigated the effects of detergents on the cell membrane in bkdR and des deficient strains associated with cell membrane. It was identified that bkdR deficient strain shows retarded growth with detergent such as Triton X-100 or N-lauryl sarcosine compared with wild type cell. Thus, it is possible that deletion mutation of bkdR modifies membrane structure and effects on transport of glycine betaine.

• KAPE Magazine
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• s.190
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• pp.6-9
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• 2012

$\blacktriangleright$ 돼지도체 등급판정두수 중 박피도체가 차지하는 비율은 매년 감소하여 '12년 4월말 기준 3.9%임. - 박피 작업장수 및 도매시장 상장두수 감소 $\blacktriangleright$ 돼지도체 등급판정두수 중 상장두수는 매년 감소하여 '12년 4월 현재 9.1%임. - 돼지도체 유통물량 중 9.1%가 전체 돼지도체 거래가격이 결정되는 구조 $\blacktriangleright$ 도매시장 상장두수 중 박피는 '00년 70.0%(2,136천 두)에서 '10년 40.4% (652천 두)로 29.6%P(1,484)가 감소하였으며, '12년 4월 현재 29.8%임. - 탕박 상장두수는 1,200천두 이상까지 증가한 적도 있지만 '10년까지 900천두 이상 수준을 유지하였음 $\blacktriangleright$ 도매시장 상장물량과 일반작업장 물량의 등급별 출현율 비교시 일반작업장물량의 상위등급 출현율이 높음. $\blacktriangleright$ 돼지도체 kg당 경락가격이 3,000원대 이상이 형성된 '04년 이후 박피 탕박간 경락가격 차이는 269~341원/kg로 분석되었음. $\blacktriangleright$ 박피 작업두수(비율) 및 상장 경매물량 감소에 따른 박피 상장 경매물량 변화에 따라 가격 민감성이 커짐. - 탕박은 박피보다 상장물량이 2배 이상이고 상장물량 변화에 따른 가격 민감성이 작아 박피와 탕박의 경락가격의 변동(상승 하락)폭의 차이가 발생하여 박피와 탕박간의 가격 역전현상이 발생.

• Polymer(Korea)
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• v.35 no.1
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• pp.94-98
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• 2011

Poly(2-hydroxyethyl methacrylate), PHEMA, hybrid gels containing Pluronic and acrylic acid (AAc) were prepared as new biocompatible and stimuli-responsive hydrogels by photo-polymerization technique. The prepared hybrid gel showed reversible, temperature-responsive swelling behavior due to the presence of Pluronic component, which underwent sol-gel transition at an elevated temperature to cause gel shrinkage. The hydrogel also exhibited increased swelling degrees and pH-sensitivity due to the AAc component with ionizable carboxylic acid groups. The microporous gel morphology and its changes upon stimuli was observed by scanning electron microscopy.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.12a
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• pp.86-90
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• 2003

XML(extensible Markup Language)는 웹상에서 문서를 표현하고 교환하기 위한 표준으로 자리 잡았다. XML 문서는 자체적으로 민감성의 등급이 다른 정보를 포함할 수 있는 구조를 가지고 있으므로 XML 문서에 대한 특정 사용자 그룹의 선택적인 접근 및 공유를 위한 방법이 반드시 필요하다. 이를 위해서는 XML문서에 대한 접근제어 정책을 규정하고 수행하기 위한 방법과 메커니즘이 요구된다. 또한, XML 문서에 사용되는 접근제어 메커니즘은 사용자가 소유하고 있는 권한부여 정보에 의존하여 문서의 안전하고 선택적인 배포가 가능해야 한다. 본 논문에서는 XML 문서의 안전하고 선택적인 접근문제를 해결하기 위하여 RBAC를 응용한 메커니즘을 제안한다.

• Journal of the Korean Institute of Landscape Architecture
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• v.36 no.2
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• pp.69-79
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• 2008

Landscape indices are effective tools to explain the spatial structure and patterns of ecological landscape including area/density, shape, core area, isolation/proximity, contagion/interspersion, and connectivity. More than 100 indices have been developed and an increasing amount of research explains changes in urban spaces using the indices. However, landscape indices have a high level of sensitivity to the scale of analysis - grain size and extent. If the scale sensitivity of indices is not considered, the research may produce inaccurate results. This study examines the scale sensitivity of landscape indices to find relatively stable indices in the complex geographical features of Korea. The scale sensitivity was analyzed using 20 categories of grain size and 41 categories of extent change. Landsat TM and ETM+ images of five years - 1985, 1991, 1996, 2000 and 2003 - were used, and 54 class level indices mounted on the FRAGSTATS program were examined. The results are as follows: First, according to the analysis of the scale sensitivity, 19 out of 54 class level indices were found to be stable to scale change. Second, the scale sensitivity was closely related to the green area ratio, and the typical threshold of change was $40{\sim}50%$. Third, among the 16 indices which were frequently used in the research in Korea, only 6 indices were relatively stable to the scale change. These results can be an effective basis for the selection of indices in the landscape ecology research in Korea.

• Journal of the Korean GEO-environmental Society
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• v.20 no.1
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• pp.67-74
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• 2019

Frost heave is one of the representative engineering characteristics in cold regions. In South Korea, which is located in seasonal frost area, structural damage caused by frost heave and thaw happens and the need for research on the frost heave is increasing. In this paper, newly developed transparent temperature-controllable cell is used to focus on the frost heave. Frost susceptible artificial soil is used to analyze water intake rate which is one of the important factors in frost susceptibility criteria. Frost heave rate and water intake rate have similar behavior after heave by freezing of pore water converges. O-ring installed in the upper pedestal to measure water intake rate generates side friction between the inner wall of the freezing cell and O-ring, thereby hindering frost heave. Therefore, the frost susceptibility criteria using the water intake rate is not reliable. It is appropriate to use frost heave rate which has similar behavior with water intake rate. Frost heave tests were performed under two different specimen heights. Overburden pressure, temperature gradient and dry unit weight were set under similar state. Based on laboratory testing results, frost heave is independent on the specimen height.