• Journal of the Korean GEO-environmental Society
• /
• v.18 no.12
• /
• pp.37-45
• /
• 2017

Structural instability and damage are caused by frost heave during the winter when atmospheric temperature maintains below $0^{\circ}C$. Frost heave is the most representative engineering characteristics of frozen ground and there are various frost susceptibility criteria. Frost susceptibility criteria can be roughly divided into three categories. First, frost susceptibility is determined from particle size distribution, which is practically useful and many countries are adopting. In this paper, several particle size distributions (PSDs) are applied to the frost susceptibility criteria but PSD seems to be not enough to determine whether soils are frost susceptible. Second, it is judged from laboratory frost heave testing results. Laboratory frost heave tests were performed with newly developed thermal controlled triaxial cell and the reliability of frost susceptibility criteria is evaluated. New testing apparatus and method are suitable to meet the existing frost susceptibility criteria. Third, it is compositive frost susceptibility criteria envelope including the particle size distribution, soil classification, and frost heave test. The compositive frost susceptibility criteria envelope should be supplemented based on additional data on various soil types.

• The Journal of Engineering Geology
• /
• v.4 no.3
• /
• pp.311-319
• /
• 1994

This paper presents a sensitivity analysis to obtain best fit of hydraulic parameters of leaky fractal aquifer. The sensitivity analysis uses the least squares method. The hydraulic parameters (generalized transmissivity and generalized storage coefficient) can be easily determined by the sensitivity analysis for various flow dimensions and different values of the leakage factor. Furthermore, the sensitivity analysis was applied to variable-rate pump tast at several abstraction wells, A computer program was developed to evaluate the hydraulic parameters by the sensitivity analysis.

• The Korean Journal of Elementary Counseling
• /
• v.11 no.3
• /
• pp.351-369
• /
• 2012

The purpose of this study is to examine the psychometric properties of the Korean Children's Rejection Sensitivity Questionnaire (K-CRSQ). In order to investigate the reliability and validity of the K-CRSQ, the data were collected from 286 elementary students. The results are as follow : Internal consistency and test -retest reliability of the K-CRSQ were .83~.89, .72~.79, respectively. To test the convergent and discriminant validity, participants were separated into two samples and administered the K-CRSQ and ten validity indices. The correlation of K-CRSQ and validity indices scores suggested that the convergent and discriminant validity are high. High rejection sensitivity group revealed high score on intentional attribution, depression, anxiety, and aggression. In contrast, low rejection sensitivity group revealed high score on self-esteem, perceived competence, and social support. The results were compared with previous studies and the implication and limitation were discussed.

• Journal of the Korea Convergence Society
• /
• v.12 no.6
• /
• pp.205-215
• /
• 2021

This study was to examine the effect of Displaced aggression and Justice sensitivity(victim sensitivity and penetrator sensitivity) on Cyberbullying tendency in 20s adult, and the moderating role of Justice sensitivity to identify psychological factors affecting a serious social problem, cyberbullying. The online survey was handed to 261 adults in their 20s for a month. First, Simple regression analysis shows that displaced aggression(F=62.55, p<.001) and victim sensitivity(F=29.61, p<.001) predict cyberbullying tendency. Second, hierarchical regression analysis by controlling the effects of sex, the perpetrator sensitivity has been shown to morderate the relationship between displaced aggression and cyberbullying tendencies(F=29.61, p<.001), and the effect of victim sensitivity has not been significant. In conclusion, that future studies need to consider the limitations of this study to ensure that the same results are shown in different age groups and also some approaches such as empathetic understanding could help to reduce cyberbullying.

• Polymer(Korea)
• /
• v.28 no.1
• /
• pp.59-66
• /
• 2004

Thermosensitive poly(N-isopropylacrylamide) gels containing temperature-sensitive liposomes showing temperature-dependent sol-gel transition were prepared. The surface of temperature-sensitive liposome was modified with copolymers of N-isopropylacrylamide and octadecylacrylate, which exhibited a lower critical solution temperature at around 30 $^{\circ}C$ After mixing the modified temperature-sensitive liposomes with poly(N-isopropylacrylamide) solution, the temperature-sensitive 1iposomes formed physically cross-linked gels through heating the solution above their lower critical solution temperatures. The release of drug from temperature-sensitive liposomes was determined by measuring fluorescence intensity. The drug release from temperature-sensitive liposomes in poly(N-isopropylacrylamide) gel gradually showed sustained-release with increasing temperature.

• Korean Journal of Childcare and Education
• /
• v.11 no.3
• /
• pp.1-23
• /
• 2015

This study examined the effect of infant teacher's sensitivity, efficacy and interaction on the social and emotional development of infants. The participants of this study were 169 infants and their teachers in daycare centers located in Seoul and Gyeonggi-do. The instruments were collected through teachers' responses. Data were analyzed through the variance analysis using PASW 18.0 to verify the infant teachers' susceptibility, efficacy, and infant-teacher interaction based on infant teachers' background variables; to find out the relationship between the variables, Pearson correlation analysis was performed, and to find out the relative influence of variables on the infants' social and emotional development, stepwise multiple regression analysis was performed. Results were as follows. Firstly, Among the background variables of the teachers, their career as infant teachers displayed differences in the infants' social and emotional development, and the susceptibility, efficacy, and infant-teacher interactions displayed partial differences based on the teaching career, career as infant teachers, age, daycare center type, and the academic background of the teachers. Secondly, there were positive relationships between infant teacher's sensitivity, efficacy and interaction and infants' social and emotional development. Thirdly, infant teachers' sensitivity, efficacy and infant-teacher interaction had an influence on infants' social and emotional development at the same time. Especially, sensitivity and interaction were powerful and influential variables and their explained variance was 53%. These results suggested that teachers' efforts must be made to interact positively with infants and to increase their sensitivity level to respond to infants in order to increase infants' social and emotional development.

• Korean Journal of Childcare and Education
• /
• v.7 no.2
• /
• pp.1-17
• /
• 2011

This study investigated the influence of mother attachment and rejection sensitivity on school-age children's loneliness. The participants were 441 school-age children in Daegu or Gyeongbok Province. The collected data were analyzed by One-way and Two-way ANOVA, and Multiple Regressions, using SPSS PC(15.0 version). The results were as follows. (1) School-age children with a lower level of mother attachment perceived higher level of loneliness than children with a higher level of mother attachment. And school-age children with a higher level of rejection sensitivity perceived higher level of loneliness than children with a lower level of rejection sensitivity. (2) School-age children with a lower level of mother attachment perceived higher level of rejection sensitivity than children with a higher level of mother attachment. (3) The explanation power of rejection sensitivity on school-age children's loneliness was rather higher than mother attachment.

• Journal of Industrial Convergence
• /
• v.17 no.2
• /
• pp.53-61
• /
• 2019

This study was conducted to explore the effects of Moral Sensitivity(MS), Biomedical Ethics Awareness(BEA) on Attitudes toward Withdrawal of Life-Sustaining Treatment(AWLST) of nursing students. The data were collected from May 1, 2018 to May 20, 2018 for 302 nursing students. The collected data were analyzed using SPSS 22.0. The average degree of MS was 3.45, BEA was 3.69, and AWLST was 3.36. MS was positively correlated with BEA(r=.149, p=.010) and AWLST(r=.223, p<.001). BEA was negatively correlated with AWLST(r=-.129 p=.025). Models including MS(${\beta}=.2.47$, p<.001) and BEA(${\beta}=-.166$, p=.003) explained 7% of variance in the AWLST. It is necessary to provide education that consider the MS, BEA and AWLST level of nursing students to help them establish an acceptable view of AWLST.

• Journal of Digital Convergence
• /
• v.20 no.4
• /
• pp.737-745
• /
• 2022

This study is a descriptive research study conducted to identify factors affecting personality by examining subjective happiness, ethical sensitivity, empathy ability, and personality of nursing students. The study subjects were 165 students enrolled in the Department of Nursing in Gyeonggi-do, and data collection was conducted through an online survey from September 9 to October 18, 2020. The average of subjective happiness, ethical sensitivity, empathy ability, and happiness of nursing students is 5.11±1.03 points, 4.33±.38 points, 3.83±.42 points, and 4.09±.39 points. Personality positively correlated with subjective happiness, ethical sensitivity, and empathy ability. The significant factors influencing personality were major satisfaction, subjective happiness, ethical sensitivity, which explained 52.8% of the variance in nursing students' personality. Based on the results of this study, it is necessary to develop an educational program that considers ethical sensitivity, subjective happiness, and major satisfaction with high explanatory power for personality.

• Journal of Industrial Convergence
• /
• v.21 no.11
• /
• pp.107-115
• /
• 2023

This study is a descriptive survey research aimed at exploring the relationship between nursing students' sense of calling, nursing professionalism, and ethical sensitivity. Data collection took place from September 1, 2022, to October 31, 2022, and data were collected using the IBM SPSS/WIN 26.0 program. The findings of this study indicated a positive correlation between a sense of calling and professional commitment (r=.43, p<.001), as well as a positive correlation between a sense of calling and ethical sensitivity (r=.38, p< .001). Furthermore, ethical sensitivity was found to have a positive correlation with professional commitment (r=.59, p<.001). Mediation analysis revealed that in the relationship between nursing students' sense of calling and professional commitment, ethical sensitivity acted as a complete mediator, explaining 36% of the variance. Therefore, ethical sensitivity emerges as a crucial variable influencing nursing students' professional commitment, highlighting the necessity for specific strategies to enhance it.