• Journal of the Korean Society of Radiology
• /
• v.17 no.3
• /
• pp.315-325
• /
• 2023

The purpose of this study was to predict abdominal obesity with 3-Dimensional computed tomography (3D CT) measurements of kidneys by analyzing the correlation between kidney sizes and abdominal obesity level. The subjects were 178 healthy adults without underlying diseases who had a comprehensive health examination at the Health Medical Center of Jesus Hospital in Jeonju. Abdominal obesity was measured by CT cross-sectional image at the level of the umbilicus and divided into visceral fat area, subcutaneous fat area, visceral fat/total fat ratio. The average comparison of kidney sizes classified according to abdominal obesity were performed through one-way analysis of variance (ANOVA) and Scheffe test. Pearson correlation analysis was performed to correlate all measurement values. The results of kidney size ANOVA analysis according to abdominal obesity were as follows. The means of kidney measurements according to visceral fat classification were significantly different in all kidney measurements (p<0.05). And in case of subcutaneous fat classification, the means of kidney measurements by 3D CT of the severe obesity group were significantly different in the right kidney width (p<0.05). In case of visceral fat area/total fat area ratio, the means of kidney measurements by 3D CT of the severe obesity group were significantly different in both kidneys width (p<0.05). Pearson correlation between kidneys measurements and CT abdominal obesity showed that visceral fat area had the highest correlation with the left kidney width measured by 3D CT (r=0.467) and subcutaneous fat area had correlation with the right kidney width measured by 3D CT (r=0.249). The visceral fat area/total fat area ratio had correlation with the left kidney width measured by 3D CT (r=0.291).

• Korean Journal of Environment and Ecology
• /
• v.27 no.6
• /
• pp.765-776
• /
• 2013

This study was conducted to find out availability of a urban forest (Eudeungsan) as a substitute place of Mudeungsan Provincial Park (MPP) in overuse problem and to identify related factors to place substitutability. During June-August of 2012, 232 samples who have ever visited both of the two places (i.e., MPP and Euduengsan) in Gwang-ju city were selected by using convenient sampling and snowball sampling methods. Self-administered questionnaire survey was conducted, and the valid responses from 225 samples (97.0%) were used for data analysis. 24.2% of respondents had "considerably" or "very much" intention to use the substitute place, and 65.5% of respondents showed "a little" or "somewhat" 10.3% of respondents didn't have any intention to visit Eudeungsan as a substitute place of MPP. Generally, socio-demographic and visiting characteristics were not related with intention to visit Eudeungsan as a substitute place of MPP. It was only found that respondents who largely visit 'alone' to Eudeungsan tended to have higher intention to visit the substitute place than those who visit 'in group.' Three factors of reasons to visit Eudeungsan (i.e.,Challenge/self-development: ${\beta}=0.35$; Accessibility/familiarity: ${\beta}=0.27$; Adventure: ${\beta}=-0.19$) influenced intention to visit the substitute place. Relationship between reasons to visit and intention to visit the substitute place was found. No direct relationship was found between perceived similarity of the places and intention to visit substitute place, and similarity of recreation experiences showed perfect mediating effects between the two variables.

• Journal of Korean Ophthalmic Optics Society
• /
• v.14 no.2
• /
• pp.41-46
• /
• 2009

Purpose: Stereopsis is one of primary characteristics for assessment of binocular function. The purpose of this study was to determine the possible relationship between the degree of exophoria and stereoacuity at near. Methods: 110 exophores (male n=71, female n=39, mean $age{\pm}SD=11.30{\pm}1.47$ years) without amblyopia, strabismus, and ocular and systemic pathology were studied. Subjects were also excluded if they had visual acuity poorer than 0.8 in either eye or vertical phoria greater than 1 prism diopter. Clinical tests were performed for near phorias by von Graefe technique using a Digital Refractor (CDR-3100, Huvitz, Korea) with chart (Predio CDC-4000, Huvitz, Korea), and for stereoacuity using the Titmus fly. Results: A one-way analysis of variance revealed that mean values of the stereoacuity classified according to the degrees of the exophoria were not significantly different (p>0.05). Conclusions: Based on the result of this study, it was found that there was no relationship between the degree of exophoria and stereoacuity.

• The Korean Journal of Applied Statistics
• /
• v.1 no.2
• /
• pp.34-44
• /
• 1987

In order to estimate the optimum fertilizer level for rice, a major food crop, the experimental results obtained from the fertilizer trials conducted at 642 experimental sites(farmers' fields) throughout the country for the period from 1976 to 1979 were examined. Since non-significant interactions among fertilizers have been ovserved from the past experiences, only thirteen treatments(combinations of fertilizer levels) for the experiments as given in the Table 1 were chosen such that simple response curves can be fitted with independent variables being N, $P_2O_5, and K_2O$. Weighted combining analysis of variance was also carried out for each type of paddy fields to test the significance of Treatments $\times$ Experimental sites interaction, and highly significant variability in response to treatments among experimental sites in the same type of paddy fields was observed in most types of fields. For the types of paddy fields where the treatments $\times$ experimental sites interaction was not significant, separate response curves for N, $P_2O_5, and K_2O$ were estimated on the basis of the mean yields of rice, and common values of the optimum levels of fertilizers were extimated thereform. When the interaction is significant, response curves were fitted for each experimental sites. The average fertilizer doses estimated for the types of paddy fields based on the individual sites are given in Tables 7-1 and 7-2.

• Korean Journal of Food Science and Technology
• /
• v.14 no.3
• /
• pp.257-264
• /
• 1982

In the present stud changes of some chemical and physical properties of a soybean oil, aerated at 120 ml/min through a porous gas distributor and oxidized at $45^{\circ}C{\sim}180^{\circ}C$, was investigated. The results of the study were as follows: The peroxide, thiobarbituric acid, and iodine value of the soybean oil which was aerated at 120 ml/min increased rapidly as oxidation temperature exceeded over $80^{\circ}C$. The acid value of the oil increased very rapidly as the oxidation temperature passed over $160^{\circ}C$. The content of the unsaturated fatty acid of the oil decreased considerably as the oxidation temperature exceeded over $80^{\circ}C$, whereas that of the saturated fatty acid did not change appreciably. This related well to the changes of the iodine value of the oil subjected to the same experimental conditions. The viscosity and refractive index of the oil increased rapidly as the oxidation temperature passed over $180^{\circ}C$. The following linear relationship hold for the viscosity and refractive index of the oil in the present study. $$V=Aexp({\frac{E}{RT}})$$ where V=viscosity(poise), A=constant, E=activation energy for viscous flow, R=gas constant, T=oxidation temperature$(^{\circ}K)$. The following relationship also hold for the viscosity and refractive index$({n^{20}}_D)$ of the oil at the present experimental conditions. $${n^{20}}_D=1.4614+7.333{\times}10^{-5}t+2.9612{\times}10^{-3}\;InV$$ where t=temperature$(^{\circ}C)$ at which the viscosity was measured.

• Journal of Gifted/Talented Education
• /
• v.21 no.3
• /
• pp.773-796
• /
• 2011

This study examined the thinking styles of scientifically gifted students on the basis of Sternberg's theory of mental self-government, and the relationship between thinking styles and self-regulated learning ability of the students and their scientific inquiry ability by the different types of thinking styles. 110 middle school students who belonging to the university science-gifted education center participated in this study. 13 thinking styles were postulated that fall along 5 dimensions which are functions, forms, levels, scopes and leanings of the mental self-government. Scientifically gifted students responded to the Thinking Style Inventory (TSI) that standardized Korean version, Self-regulated Ability Inventory and Test of Science Inquiry Skills Inventory (TSIS). The results indicated that scientifically gifted students prefer legislative, liberal, external, hierarchical and judical thinking styles, rather than conservative style. This result also showed that subscales of thinking styles were significantly correlated with self-regulated learning ability and scientific inquiry ability. The legislative style, hierarchical style, local style and liberal style were significant predictors of self-regulation learning ability. The legislative style was significant predictor, whereas oligarchic style was negative predictor of scientific inquiry ability. The results of k-means clustering analysis and MANOVA showed that the self-regulated learning ability and scientific inquiry ability were significantly correlated with the pattern and level of thinking style.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.8 no.4
• /
• pp.119-127
• /
• 2013

The purpose of this study is an attempt to explore the impact of working environment of visiting instructor on the empowerment for multi-cultural families. In this light, this study aims to provide some inevitable and necessary foundational data for reinforcing the empowerment of visiting instructor in order to essentially improve the quality and effectiveness of this governmental service. To accomplish this goal, this study selected eighteen multi-cultural service centers which locate near to the capital city due to each center serves relatively a large populations of multi-cultural families and took a survey from visiting instructor 286 survey forms. It used SPSS WIN 15.0 program for analyzing data, and the following is a list of tests used in this research: t-test,One-way ANOVA, correlation analysis, multiple regression analysis. The conclusive consequences from the research are following. In the case of analyzing the difference of empowerment for multi-cultural families, the project showed that the nationality, the forms of religion, the level of education, the number of child, the state of economic made a difference. As this project explored the impact of working environment on job stress, it showed that job characteristics and organizational commitment's compensation system and the development of education negatively effects on job stress. Therefore, as this project investigated how the working environment impacts on the empowerment.

• Applied Biological Chemistry
• /
• v.37 no.1
• /
• pp.14-18
• /
• 1994

In order to elucidate the interaction effect between temperature and moisture content on the oil expression of perilla seed, recovery of expressed oil (REO) and volumetric strain of pressed cake (VSPC) of both roasted and unroasted perilla seeds were observed at different temperatures of 30, 40, 50 and $60^{\circ}C$, and different moisture contents of 2.5, 4.5, 6.5 and 8.5% (w.b). And duration of press was 11 min and applied pressure was 50 MPa. At the low temperature REO and VSPC of roasted and unroasted perilla seed increased in high moisture content and at the high temperature those increased in low moisture content. But REO and VSPC at 8.5% moisture content were decreased without relation to temperature. From the analysis of variance between expression factors and REO and VSPC, temperature and moisture contents showed high significance. Also the interaction effect between temperature and moisture content was higher than temperature. In our experimental conditions, the highest interaction effect between expression factors was observed in the range of $2.5{\sim}4.5%$ of moisture content in all temperatures. The maximum REO of unroasted perilla seeds was observed as 84.4% at 2.5% of moisture content and $60^{\circ}C$, and that of roasted one was as 84.3% at 6.5% of moisture content and $30^{\circ}C$.

• The Journal of the Korea Contents Association
• /
• v.15 no.8
• /
• pp.389-396
• /
• 2015

The liver fibrosis is a disease we often see in clinical medicine, and the persistence and repeatition of inflammation and necrosis of liver cells continue for several years, and it is proceeded to cirrhosis. So decrease of death rate and prevalence rate by complications of cirrhosis and hepatocellular carcinoma is main task of clinical medicine by protection of chronic liver ailment patients from proceeding to cirrhosis and hepatocellular carcinoma. So this study tried to represent the ultrasonic image, blood test, the relationship with liver stiffness of diffuse liver ailment patients as numbers. This study was performed with patients from whom the image was taken by ultrasonic and 141 people who were treated by fibroscan, the basic data for blood test was obtained from the test results at the time when ultrasonic image and liver fibroscan was performed. The statistical analysis was performed by One-way analysis of variance(ANOVA) to verify difference between groups. The value of liver stiffness was increased in the order of normal, chronic liver disease and cirrhosis. As a results, ALT and Albumin have no statistical difference between object groups, and there are statistical differences in the results of ultrasonic decoding at age, AST, ALP, Bilirubin, PLT, PT, and kPa, and they are statistically meaningful(p<0.005). And the value of liver stiffness of chronic liver ailment was presented only as over 12.5kPa in other study, but it was represented as numbers for quantitative diagnosis by presenting average kPa threshold value according to disease in this study. And by presenting relationship of diagnosed results, it is considered that it could be used as first tool to diagnose chronic liver ailment patients according to their disease.

• 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.