• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.5A
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• pp.307-315
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• 2012

Recently, ultra high performance fiber reinforced concrete (UHPFRC) having over 180 MPa compressive strength and 10 MPa tensile strength has been developed in Korea. However, UHPFRC represents different material properties with normal concrete (NC) and conventional high performance concrete (HPC) such as a high early age autogenous shrinkage and a rapid dry on the surface, because it has a low water-binder ratio and high fineness admixtures without coarse aggregate. In this study, therefore, to propose suitable experimental methods and regulations, and to evaluate mechanical properties at a very early age for UHPFRC, setting, shrinkage and tensile tests were performed. From the setting test results, paraffin oil was an appropriate material to prevent drying effect on the surface, because if paraffin oil is applied on the surface, it can efficiently prevent the drying effect and does not disturb or catalyze the hydration of cement. From the ring-test results, it was defined that the shrinkage stress is generated at the time when the graph tendency of temperature and strain of inner steel ring is changed. By comparing with setting test result, the shrinkage stress was firstly occurred as the penetration resistance of 1.5 MPa was obtained, and it was about 0.6 and 2.1 hour faster than those of initial and final sets. So, the starting time of autogenous shrinkage measurement (time-zero) of UHPFRC was determined when the penetration resistance of 1.5 MPa was obtained. Finally, the tensile strength and elastic modulus of UHPFRC were measured from near initial setting time by using a very early age tensile test apparatus, and the prediction models for tensile strength and elastic modulus were proposed.

• Journal of the Korean Mathematical Society
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• v.38 no.6
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• pp.1117-1123
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• 2001

A ring is a DICC ring if every chain of right ideals in-dexed by the integers stabilizes to the left or to the right or to both sides. A counterexample is given to an assertion of karamzadeh and Motamedi that a transfinite power of the Jacobson radical of a right DICC ring is zero. we determine the behavior of the transfinite powers of the Jacobson radical relative to a torsion theory and consequently can obtain their correct behavior in the classical setting.

• Management & Information Systems Review
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• v.35 no.1
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• pp.235-251
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• 2016

The main purposes of this study is to examine the effect of treatment setting on patient participation, and the moderating effect of negative emotion between treatment setting and patient participation. For the purposes of this study's goals, the 320 samples for this empirical study were collected from the general hospital and medical clinic outpatients in C and carried out hierarchial regression by SPSS 19.0. The results of this study are as follows. There is positive effect of cleanness of the treatment setting on behavior factor in patient participation. The higher aging of patient have influences on emotional factor in patient participation. There are positive effects of the third person in treatment settings on emotional and informational factors in patient participation. There is negative effect of negative emotion on emotional and informational factors in patient participation. There are negative effects of time pressure in treatment settings on emotional and informational factors in Patient Participation. On interaction effect, there are positive effects of cleanness in treatment setting and negative emotion on emotional and informational factors in patient participation. Implications for theoretical and practical patient participation are discussed.

• Journal of Families and Better Life
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• v.11 no.2
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• pp.83-95
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• 1993

This study investigated time management behavior of employed wives and variables related. The samples were composed of 396 wives living in Seoul and Kwangju city. The major finding are as follow: 1) The level of the time management of employed wives was slightly high. 2) The dominant factor in time management behavior was goal setting and planning$.$priori-ting 3) The time management behavior was low related to the time use. A negative relationship was found between time management behavior and psysiological time employed time psysical housework time and passive leisure time while a positive relationship was found managerial housework time and active leisure time 4) A employed wife with higher work status education and income level efficiently managed time Education and extend family type turned out facilitating factors the more employed time was found constraint factor in time management.

• Korean Journal of Child Studies
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• v.17 no.2
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• pp.19-32
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• 1996

The purpose of this study was to investigate the relationship between adjustment, temperament, and mothers' childrearing behavior. The subjects were 132 three to five-year old children. The research instruments included TRS(Temperament Rating Scale), the modified IPBI(Iowa Parent Behavior Inventory), and PAQ (Preschool Adjustment Questionnaire). The data were analyzed by percentiles and canonical correlation analysis. The results were as follows : Among the five temperament factors and four childrearing factors, the best predictor of children's adjustment was activity temperament. The next one was Limit Setting of childrearing behavior. Among the five adjustment measures, the one predicted best by children's temperament and mothers' childrearing behavior was Adjustment to Preschool Routines.

• Journal of Korean Institute of Industrial Engineers
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• v.20 no.1
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• pp.113-120
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• 1994

A duopoly model is developed in order to examine the effect of imperfect competition on the price-setting behavior of competing providers in a congested market. Multiple Nash price equilibria are found and the implications of such multiple price equilibria are discussed.

• Journal of the Korea Society of Computer and Information
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• v.22 no.9
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• pp.125-132
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• 2017

The purpose of this study was to examine the factors influencing career preparation behavior based on the perception of college students from the perspective of social cognitive career theory and to examine the effect of career barriers and career decision self - efficacy on career preparation behavior And career - decision self - efficacy. The results of the study are as follows. First, career barriers perceived by college students showed a significant positive correlation with career decision self - efficacy and career preparation behavior(-), and career decision efficacy showed a statistically significant correlation with career preparation behavior(+). Second, as a result of linear regression analysis to examine the effect of career barriers on career preparation behavior, lack of self - clarification, lack of job information, and lack of recognition of need were subordinate factors of career barriers. Third, as a result of linear regression analysis to examine the effect of career decision - making self - efficacy on career preparation behavior, goal setting and job information, which are sub - factors of career decision self - efficacy, were analyzed. Fourth, mediating effects of career decision self - efficacy on career barriers and career preparation behavior were analyzed by hierarchical regression analysis. The results of this study confirm that the level of career barrier, which is an important factor in career preparation behavior of college students, should be lowered and career decision self - efficacy should be increased.

• Journal of the Korean Society of Costume
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• v.18
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• pp.351-359
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• 1992

The purpose of this study is to analyze the costume in $\ulcorner$The Goddess Abides$\lrcorner$ of Pearl S. Buck by applying "Dramaturgical Analysis" of Erving Goffman. The frame of analysis is the dramaturgical conception of Goffman that he expressed in $\ulcorner$The Presentation of self in Everyday Life (1959)$\lrcorner$. Among the conception, I analyzed by applying 'performance', 'technique of impression management', 'region and region behavior' which can be used for studying and costume behavior. The following is the summary of my study. First, the performance means the performer's behavior and the procedure of impression management if face to fact interaction, which includes personal front and setting. Setting is mainly a house on the Mt. in Vermont. The time is Winter. The personal front includes appearance and manner. actors and audiences form impression through persional front. And Istudied the performance of the actors (or actress), Edith, Jared, Edmond, Edwin, Amelia, June. As for technique of impression management, I cold observe that a varieth of that were being used, such as the most general one that Edith wants to look beautiful by making god appearance, or she sometimes try not to look beautiful And when Edith meets Jared, sometimes she changed her clothes, but other times she doesn't do that. As for region and region behavior, there appears the distinction of region and a lot of expressions about clothes related to the distinction. I could observe the expressions showing the movement from front to back and from back to front. Especially I could observe the behaviors that can be occured only in back region in everyday life, that is bathing, changing clothes, making up, checking their appearance before the mirror. Like above when I analyzed $\ulcorner$The Goddess Abides$\lrcorner$ of Pearl S. Buck by Goffman's Dramaturgical analysis, I could find out that the theory was very useful to the analysis of the costume behaviors of the characters.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.13 no.5
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• pp.397-402
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• 2020

Collagen type I is the most abundant protein in the human body. It shows viscoelastic behavior, which is what confers tendons with their viscoelastic properties. There are two different temperature setting methods in molecular dynamics simulations, namely rescaling and reassignment. The rescaling method maintains the temperature by scaling the given temperature, while the reassignment method sets the temperature according to a Maxwell distribution at the target temperature. We observed time-dependent behavior when the reassignment method was applied in tensile simulation, but not when the rescaling method was applied. Time-dependent behavior was observed only when the reassignment method was applied or when one side of the collagen molecule was stretched to a greater extent than the other side. As result, the collagen is elongated to 80nm, 100nm, 130nm, and 180nm, respectively, when the collagen is pulled by different velocities, 0.5, 1, 2, and 5 Å/ps, up to 40 Å. The results do not provide a detailed physical explanation, but the phenomena illustrated in this result are important for caution when further simulations are performed.

• Journal of the Korean Home Economics Association
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• v.28 no.1
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• pp.141-156
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• 1990

The purpose of this study was to develop 『Korean Maternal Behavior Inverntory』(KMBI). The subjects were 712 mothers of 4th-6th grade elementary school children from 5 urban cities in Korea. Item analysis. Cronbach's α, Pearson's r, Factor analysis, and Percentile norms were conducted for the purpose of the study. The major findings were as follows; 1. By the method of item analysis and factor analysis, 51 items were selected for the scale of maternal behavior. 2. A factor analysis showed 7 factors(Reasoning guidance, Affect, Antliorian Control, Achievement, Overprotection, Active Involvement, Limit Setting) as separated domains from each others. 3. The reliablity coefficient of the scale was ranged from 62 to 81 sufficient to secure reliability. 4. Percentile ranks were drived from the total score and quartiles were calculted for the each of seven factor's scores. The present study presents a potentially highly useful way of measuring maternal behavior of 4th-6th grade elementary school children in Korea.