• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.171-174
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• 2003

The relationships between compression index, $C_c$, which is the slope of the e-log p curve from consolidation test, and other physical properties of remolded and undisturbed clays were examined. After examined, it is clarified that the $C_c$-initial porosity, $n_0$, relationship is better correlation than the $C_c$-other factors relationship, and a new $C_c$ equations using $n_0$ for remolded and undisturbed clays were suggested.

• Journal of the Korean Chemical Society
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• v.8 no.1
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• pp.15-19
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• 1964

Basicities of nine dimethylanilines have been determined in 50, 70, and 90 volume % ethanol, at $25^{\circ},\;30^{\circ},\;35^{\circ},\;and\;40^{\circ}C$. Temperature coefficients were found to be independent of solvent composition, while they showed a linear correlation with basicities of the compounds. Thermodynamic parameters obtained have been used in the discussion of substituent and solvent effects in conjunction with the general equation derived in the preceding papers.

• Archives of Pharmacal Research
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• v.4 no.2
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• pp.91-98
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• 1981

The substituent effects on the fluorescence of 2-(substituted anilino)benzoic acids and their aluminum chelate compounds were examined and satisfactory linear relationships between Hammett substitute constants, .sigma. and the lowest excited singlet energy levels were obtained. But fluorescence intensity only made a qualitative relationship with .sigma. values of substituent groups. Effects of solvents and metal ions on the native and metal chelate fluorescence of the above derivatives were also investigated.

• Journal of Ginseng Research
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• v.22 no.4
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• pp.294-298
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• 1998

This study was conducted to investigate the effects of growth characteristics and mineral contents of ginseng seedling grown in different locations on ginseng growth and root yield. Ginseng seedling produced in 16 farmers' field at the semi-Yangjik seedbed were planted and cultivated in a field with same cultural practices. Missing plant was increased with increased year of ginseng age, especially severe at 5-year-old ginseng. Rate of missing plant was different among the origins of the seedling, even with the same weights. Negative correlation was noted between the missing rate of 3-year-old ginseng plants and NH4-N content of the seedling, but positive correlation between the missing rate and K2O and Ca contents of the seedling. Root yield of 6-year-old ginseng was also affected by the origins of ginseng seedlings. Root yield was high in ginseng plant from 0.6∼0.9 g see dings compared to those from over 0.9 g seedlings.

• Asian-Australasian Journal of Animal Sciences
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• v.9 no.6
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• pp.723-726
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• 1996

A water loaded pressure device using water as the breaking force was developed to evaluate eggshell strength and compared with a dropping ball techniques. Further, relationships of shell thickness and weight of eggs to shell strength were also studied. Values for both of the shell strength measuring methods showed a highly significant correlation (p < 0.001) with shell thickness. The water loaded pressure method had a much higher simple correlation coefficient for shell thickness (r = + 0.786) than the dropping ball method (r = + 0.577). The shell strength measured by the water loaded pressure method appeared not to be correlated to egg weight. On the other hand, the negative sign of the standard partial regression coefficient and the partial regression coefficient of egg weight in the estimated multiple regression equation implied that for a given shell thickness a larger egg tended to have less shell strength than a smaller egg.

• Journal of the Korea Fashion and Costume Design Association
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• v.15 no.3
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• pp.1-17
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• 2013

The purpose of this study was to identify the relationships among self-esteem, physical appearance comparison, media concern, sociocultural attitude toward appearance, body attitudes, and life satisfaction. Data were collected from a convenience sample of 232 female undergraduate students. Data were analyzed using factor analysis, correlation, and multiple regression. The result showed that there was a correlation between physical appearance comparison and media concern. Self-esteem, physical appearance comparison, and media concern had an indirect influence on body attitudes through sociocultural attitude toward appearance. Self-esteem and physical appearance comparison had a direct effect on body attitude. All variables did not have an influence on life satisfaction, except self-esteem.

• Journal of the Korean Home Economics Association
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• v.37 no.7
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• pp.95-110
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• 1999

The purpose of this study is to analyze a relationship among the perceived rural life, daily life stress and life problem behavior of the rural adolescents. To Analyzed the relationships between the view on rural life, daily life stress and the life problem behavior, the survey was conducted on 366 rural high school students, during the period between July 1 to 9 in 1998. The major findings are summarized as follows; 1. Among the independent variables, the sex and the record influenced on the perceived rural life, daily life stress and life problem behavior. 2. There is the negative correlation between the view on rural life and the daily life stress. And also, there is the positive correlation between the daily life stress and the life problems behavior.

• Korean Journal of Child Studies
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• v.27 no.5
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• pp.183-193
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• 2006

Tests of intrinsic-extrinsic motivation, self-efficacy, and creativity were administered to 75 college students. Results were analyzed by Pearson's correlation, partial correlation and Barron and Kenny's(1986) model. The main results were that (1) creativity was positively correlated with intrinsic motivation and negatively correlated with extrinsic motivation. (2) Self-efficacy played an important mediating role in the relationship between extrinsic motivation and creativity, but not in the relationship between intrinsic motivation and creativity, suggesting that extrinsic motivation negatively affects creativity because it lowers self-efficacy, which is intimately related with creativity. (3) The negative effect of extrinsic motivation on creativity was explained by such sub-factors of self-efficacy as self-confidence and preference for difficult tasks, but not by self-regulatory efficacy.

• Bulletin of the Korean Chemical Society
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• v.25 no.7
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• pp.1046-1050
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• 2004

Six physical properties (enthalpy, density, decomposition temperature, solubility in water, pKa values, and hydronium potential) were examined by molecular modeling techniques. The molecular connectivity index, Wiener distance index, and Ad hoc descriptor are employed as structural parameters to encode information about branching, size, cyclization, unsaturation, heteroatom content, and polarizability. This paper examines the correlation of the molecular modeling techniques parameters and the physicochemical properties of amino acids. As a results, calculated values were in agreement with experimental data in the above six physical properties of amino acids and the molecular connectivity index was superior to the other indices in fitting the calculated data.

• Korean Journal of Child Studies
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• v.16 no.1
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• pp.99-112
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• 1995

This study aimed (1) to classify Korean kindergarten childrens' attachment to their mothers based on a system for classifying attachment organization developed by Main and Cassidy (1988), and (2) to investigate the relationship of attachment and temperament and mothers' child rearing behavior. 76 kindergarteners and their mothers were observed and videotaped in the strange situation. The modified PTQ(Parent and Teacher Temperament Questionnaire) for children 3-7 years of age and the IPBI(Iowa Parent Behavior Inventory: Mother Form) were administered respectively to 76 mothers to assess their parenting behavior and their children's temperament. The data were analyzed by percentiles, Pearson's correlations, and canonical correlation analysis. Results indicated that there was a little difference between the attachment classification of Main and Cassidy(1988) and that of Korean kindergarten children. There were significant correlations between children's temperament and the attachment to their mother. And mothers' parenting behavior was significantly related to the security of attachment. The canonical correlation analysis indicated that independent variables all together accounted for about 7.5% of the variation in attachment-variables.