• Proceedings of the Korean Society of Marine Engineers Conference
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• 2002.05a
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• pp.173-179
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• 2002

There is a growing concert about energy efficiency at the present time. Even refrigerators can not be omitted from this issue. So the factors have been searched to decrease the consumption of electric power in refrigerators. It is possible to analyze the numerical data of the cover back machine and the change of condenser shape to find that they affect the consumption of electric powers by improving the fluid flow of within the interior of the refrigerator. As a result, the problems, fluid of the eddy and stationary of the existing refrigerator can be solved partly by the improved model.

• Child Health Nursing Research
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• v.3 no.1
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• pp.71-82
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• 1997

The purpose of the survey was to Identify the degree and the relationship of sexual knowledge, sexual attitude. This information will provide useful data for a more systematic, desirable, and practical sex education. The data was collected from 187 first grade schoolchildren(95 boys and 92 girls) of two Junior high school in Chun-nam area. The data was gathered by questionnaire from Oct. 1 to 15, 1996. The questionnaire was modified by authors using the questionnaire developed by You-Jeong, Han (1996). Data was analyzed by using the statistical computer package, SAS to manipulate the data along with percentages, means, standard deviation, t-test, χ²-test, GLM, and Pearson correlation coeffiency. The results in this study were summarized as follows: 1. Sex related knowledges.-The mean score of sex related knowledges showed significant differences between boys and girls (boys : 22.3, girls .21.0, p<0.025), and in the area of pregnancy & delivary(boys : 9.4, girls : 7.9, P<0.000) showed significant difference between boys and girls, but in the area of physical differeces of the other sex(boys : 12.9, girls ; 13.1, p<0.551) showed no significant difference between boys and girls. 2. Sex related attitudes.-The mean score of sex related altitudes showed significant difference between boys and girls (boys : 56.7, girls : 60.5, p<0.002) and in the area of psychological difference the other sex(boys 28.9, girls : 32.5, p

• Journal of the Korean Society of School Health
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• v.9 no.1
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• pp.99-108
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• 1996

The purpose of the survey was to identify the degree and the relationship of sexual knowledge, sexual attitude and need of sex education. This information will provide useful data for a more systematic. desirable, and practical sex education. The data was collected from 300 first grade schoolchildren (150 boys and 150 girls) of two Junior high school in K city. The data was gathered by questionnaire from Nov.21 to 28, 1995. The questionnaire was modified by authors using the questionnaire developed by Lief & Reed. Data was analyzed by using the statistical computer package, SAS to manipulate the data along with percentages, means, standard deviation, t-test, $X^2$-test, GLM, and Pearson correlation coeffiency. The results in this study were summarized as follows: 1. Sexual knowledge. - The mean score of sexual knowledges showed no significant differences between boys and girls(p<0.6180), but in the areas of biological differences(boys; $11.57{\pm}2.43$, girls; $10.93{\pm}2.41$, p<0.0242), and pregnancy physiology(boys; $9.28{\pm}1.87$, girls; $10.04{\pm}2.42$, p<0.0026) showed significant difference between boys and girls. 2. Sexual attitudes. - The mean score of sexual attitudes showed no significant difference between boys and girls (p<0.8286), but in the areas of masturbation (boys : $6.69{\pm}2.22$, girls : $5.65{\pm}1.88$, p<0.0001), and premarital intercourse (boys : $5,42{\pm}1.35$, girls : $6.00{\pm}1.33$, p<0.0002) showed significant difference between boys and girls 3. Need of sex education. - The majority of the subjects wanted to learn about sexual delinquency and it's prevention(57.7%), form a friendship with the other sex(56.3%), physical differences of the other sex(52.0%), psychological differences and the charateriatics of the other sex (50.3%) and meaning of love(50.3%). 4. The relationships between sexual knowledges and sexual attitudes. - Those who had higher sexual knowledges showed more positive attitudes towards sex, and showed statistical significance(r=0.2074, p<0.0003). 5. The relationships between general charateristics and sexual knowledge. - Better students(by self-perception of school performance) had higher knowledge scores about sex. 6. The relationships between general charateristics and sexual attitudes. - Those who wanted to learn more about sex, and better students had higher attitude scores about sex. - Those who were in high standard of living had higher attitude scores about sex as well. Suggestions based on above study are as follows' 1. The planned sex education showed be performed to the schoolchildren establish responsible attitudes about sex. 2. Systematic sex education through formal school education according to age is recommended. 3. Further studies should be done to measure the effect of sex education based on the needs of the schoolchildren.