• Proceedings of the KIEE Conference
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• 1997.07e
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• pp.1804-1806
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• 1997

Route conditions, applied voltage and the condition of stringing conductors should be considered in determining standard types and skeleton diagrams of towers. In skeleton diagrams the necessary number of insulators and the air clearance have been decided by the results of studies on insulation coordination. Galloping, sleet-jumping, sag characteristics and the possibility of closeness of conductors should be considered according to the condition of stringing conductor and the span. After reviewing those factors, it is necessary to determine the minimum vertical and horizontal distance for the safety of transmission lines under any circumstances. Also it should be economical.

• The Journal of the Korea Contents Association
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• v.12 no.5
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• pp.256-271
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• 2012

The purpose of this research was whether the marital relations of aged people affect the marital satisfaction and the divorce intention. The survey was conducted men and women with their spouse in 60th or more than 60th. Total surveys distributed were 550 and 459 were collected and analyzed finally. The statistic method applied in this research was SPSS 19. The statistic method use in this study was factor analysis, frequency analysis, t-test, one way ANOVA and Hiearchical multi-regression analysis. The results of the research were as follows. First, marital satisfaction has positive relations on affection expression, leisure sharing, sense of closeness and communications. However, economic conflict has negative relations on marital satisfaction. Second, divorce intention has positive relation with economic conflict. On the other hand divorce intention showed negative relations with affection expression, sharing leisure, sense of closeness and communication. Finally, There were differences in the spousal relationships and of the elderly according to the demographic factors and based on the above results several suggestions and limitations were presented.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.351-353
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• 2015

공공정보 공유 및 개방, 소셜네트워크서비스의 활성화 그리고 사용자 간의 공유 데이터 증가 등의 이유로 인터넷상에 노출되는 사용자의 개인 정보가 증가하고 있다. 인터넷상에 노출된 사용자들의 개인정보들은 연결공격(linkage attack), 배경지식 공격(background attack)으로 프라이버시를 침해할 수 있다. 이를 막기 위해 관계형 데이터베이스에서는 대표적으로 k-익명성(k-anonymity)을 시작으로 l-다양성(l-diversity), t-밀집성(t-closeness)이라는 익명화 모델이 제안되었으며 계속해서 익명화 알고리즘의 성능은 개선되고 있다. 하지만 k-익명성, l-다양성, t-밀집성 모델의 조건을 만족하기 위해서는 준식별자(quasi-identifier)를 일반화(generalization)처리 해주어야 하는데 이 과정에서 준식별자의 가치를 손실된다는 단점이 있다. 본 논문에서 준식별자의 정보 손실을 최소화하기 위해 k-익명성 모델을 만족시키는 과정에서 일반화와 데이터를 삽입을 사용하는 익명화 처리하는 방법을 제안한다.

• Journal of Families and Better Life
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• v.20 no.2
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• pp.147-159
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• 2002

The purpose of this study is to investigate children's perceptions of their own peer status and the variables that affect the perception. Four hundred boys and girls in grades five and six participated in this study. The participants were sampled from elementary schools located in two cities in Cheon-buk Province. Out of the 400 self-report questionnaires filled by the participants, 380 were used for the data analyses. The methods of analyses included basic descriptive categorical analysis (frequencies, means, percentages) as well as t-test, one way ANOVA, and multiple regressions. To summarize major findings from the analyses; first, a significant difference was found in children's aggression by father's job and mother's age, in children's popularity by school GPA, father's education, mother's education, and fathers job, and in children's isolation by father's age, father's education, mother's education, and father's job. Second, children's aggression was significantly dependent upon self-esteem, loneliness, family harmony, and family communication. Children's popularity was related with school grade, name satisfaction, body satisfaction, self-esteem, number of close friends, loneliness, family harmony family communication, parental love and acceptance, and perceived closeness to mother. Children's isolation was significantly associated with school grade, body satisfaction, self-esteem, number of close friends, loneliness, family harmony, family communication, parental love and acceptance, and perceived closeness to mother Third, according to the multiple regression analyses, it was found that highly aggressive children tend to report less family harmony, more loneliness, and a larger number of friends. Also, highly popular children tend to report less loneliness, larger number of friends, strong family harmony, and higher academic achievement. On the other hand, highly isolated children tend to perceive weak family harmony, more loneliness, and lower body satisfaction. Lastly, the overall peer status indicator depended significantly on family harmony, loneliness, self-esteem, academic achievement, body satisfaction.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2012.11a
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• pp.95-96
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• 2012

This study makes with the environment-friendly artificial stone which doesn't use the cement and natural aggregate and increases the blast furnace slag that is the eco-friendly material that is the industrial byproduct, fly ash, and availability of the red mud and applies the coares aggregate substitute material as the cleistothecium. The experimental plan according to it indicated the compressive strength and flexural strength which is the most excellent in the mixied ratio 40% of the result degree of closeness magnetism of experimenting with the optimal mix obtained through the preceding stude.

• Asian-Australasian Journal of Animal Sciences
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• v.19 no.8
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• pp.1071-1078
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• 2006

Three buffalo populations viz. Bhadawari, Tarai and local buffaloes of Kerala were genotyped using 24 heterologous polymorphic microsatellite loci. A total of 140 alleles were observed with an average observed heterozygosity of 0.63. All the loci were neutral and 18 out of the 24 loci were in Hardy Weinberg Equilibrium. The $F_{IS}$ values (estimate of inbreeding) for 16 loci in all the three populations were negative. This indicated lack of population structure in the three populations. The effective number of immigrants was 5.88 per generation between the Tarai and Bhadawari populations which was quite high suggesting substantial gene flow. The genetic distances revealed closeness between the Tarai and Bhadawari populations which was expected from geographical contiguity. The FST values were not significantly different from zero showing no population differentiation. The Correspondence Analysis based on the allelic frequency data clustered the majority of the Tarai and Bhadawari individuals as an admixture.

• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.4
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• pp.51-58
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• 2016

In the area of hotel and tourism sector, various research are analyzed using big data. Big data is being generated by any digital devices around us all the times. All the digital process and social media exchange produces the big data. In this paper, we analyzed the de-identification method of big data to use the personal information of hotel guests. Through the analysis of these big data, hotel can provide differentiated and diverse services to hotel guests and can improve the service and support the marketing of hotels. If the hotel wants to use the information of the guest, the private data should be de-identified. There are several de-identification methods of personal information such as pseudonymisation, aggregation, data reduction, data suppression and data masking. Using the comparison of these methods, the pseudonymisation is discriminated to the suitable methods for the analysis of information for the hotel guest. Also, among the pseudonymisation methods, the t-closeness was analyzed to the secure and efficient method for the de-identification of personal information in hotel.

• Journal of Engineering Education Research
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• v.22 no.2
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• pp.55-60
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• 2019

Colleges of technology in Japan are characterized by specialized education starting from the first grades aged fifteen, making it particularly important to provide motivation for specialized subjects. The most difficult thing for teachers in the technical college is giving the motivation to a professional education to the lower grades who don't know the technology and engineering. Teachers tried to use and make a suitable example or an education material for their lecture. The generation gap with students makes it difficult for teachers to use examples of objects that students are actually familiar with in their daily life. To compensate for the generation gap with students, we asserted that education for lower grades should adopt the perspectives of students in higher grades. The relative closeness in age of lower and higher grades helps reduce the generation gap with students, which is advantageous in that teachers can share the perspectives of students.

• Korean Journal of Childcare and Education
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• v.10 no.5
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• pp.25-45
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• 2014

This study examined the moderating role of teacher-child relationship on the relation between children's shyness and peer victimization. Participants were 200 children(97 boys, 103 girls; recruited from classes with 5-6 year olds) and their kindergarten teachers. The teachers completed rating scales to measure the children's peer victimization, shyness and teacher-child relationship. The collected data were analyzed using descriptive statistics, t-tests, correlations, and hierarchical multiple regressions. Boys and girls were analyzed separately. Results showed that children's shyness had a positive relation to their peer victimization. Teacher-child relationship significantly related to children's peer victimization. Hierarchical regression analysis indicated that the interaction of boys' shyness and teacher-child closeness predicted boys' peer victimization. Boys' shyness, whose teachers demonstrated the lowest level of teacher-child closeness, was significantly associated with their peer victimization. Boys' shyness had a significant relation to their peer victimization, especially for the highest level of teacher-child conflictual relationship. Results are discussed in terms of the role of teachers to shy boys' peer victimization.

• Korean Journal of Environmental Agriculture
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• v.18 no.4
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• pp.332-338
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• 1999

To treat livestock wastewater effectively by electrochemical method using a stainless steel electrode or au aluminum electrode, the effects of voltage, distance of electrodes and PACS(Poly Aluminum Chloride Silicate) dosage on removals of pollutants in batch experiment for investigation the optimum treatment conditions of livestock wastewater were investigated. The results were summarized as follows ; On the effect of voltage, temperature and pH in electrochemical reactor were increased with increase in voltage but EC was a reverse in both electrodes. Removals of COD and T-N were increased with increase in voltage in both electrodes. SS removal was greater than 90% regardless of voltage without doing electrochemical reaction over 15min at 20V or 12min at 30V in both electrodes. T-P removal was over 90% regardless of voltage in both electrodes. On the effect of distance between two electrodes, removals of COD, T-N and T-P were increased with closeness in distance between two electrodes, and SS removal was greeter than 90% regardless of distance between two electrodes in both electrodes. On the effect of PACS dosage, removals of COD, T-N and T-P were increased with increased in PACS dosage up to 200㎎/l in both electrodes. SS removal was greater than 90% regardless of PACS dosage in both electrodes.