• Proceedings of the Korea Concrete Institute Conference
• /
• 1993.04a
• /
• pp.1-5
• /
• 1993

In the country, due to short comings of natural aggregates of good quality, it is common to use crushed stones. However, the investigation has not been done on the chemical reaction of crushed stones. This study tested and analyzed the aggregate chemical reaction by petrographic examination(ASTM C 295) for the test aggregates which had been tested by chemical method(ASTM C 289) in the first year. As a result, most of test aggregates didn't show any reaction but many have common deleterious mineral. Therefore, there exists the possibility of chemical reaction in petrogrphic point of view

• Proceedings of the KIEE Conference
• /
• 2008.11a
• /
• pp.3-5
• /
• 2008

Korea Electric Power Research Institute has being carried out an IEC 61580 based communication service test on domestic IED trial products developed related to power IT project. This paper describes IEC 61850-10 conformance test and testing items established by UCA international Users Group and this study is on the analysis of testing results from IED communication service with selected testing blocks, which consist of Basic association, Dataset, Reporting and GOOSE.

• Journal of Families and Better Life
• /
• v.9 no.2
• /
• pp.37-48
• /
• 1991

The purpose of this study is to investigate the price-quality satisfaction focus on clothing. For the purpose, a survey was conducted using questionnaires. Frequency distribution, Percentile, Mean , One-Way ANOVA , Scheffe test, t-test, were used for data analysis. The main result are as follows. First, in general the price-quality satisfaction was somewhat high. Second, the price quality satisfaction was influenced by social economic variables (age , income, education) consumer attitude, and market environment.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2007.06a
• /
• pp.577-578
• /
• 2007

• Journal of the Korean Home Economics Association
• /
• v.19 no.4
• /
• pp.55-64
• /
• 1981

The purpose of this study is to clarify the attitude of urban homemakers toward household work. The data in this study are obtained from a survey by means of a questionnaire to 174 homemakers in Chuncheon. Frequency, percent, F-test and t-test were applied for the statistical analysis and following results were found. 1) Respondents expressed slightly favorable attitudes toward household work and attitudes varied among the work and attitudes varied among the work activities. 2) The variables affecting the attitude were the age, educational level of homemakers, and the family structure.

• Journal of the Korean Society of Physical Medicine
• /
• v.4 no.1
• /
• pp.23-30
• /
• 2009

Purpose : This study was investigated the effect of static balance recovery during open kinetic chain exercise (OKC) and closed kinetic chain exercise(CKC). Methods : The paticipants were consisted of forty-one, was perform 3 sets, 3 times per week for 6 weeks, balance was measured by GOOD BALANCE. Statistical analysis was used repeated measure two-way ANOVA and independent t-test. Results : In CKC group, Center of presure(COP) medial-lateral(ML) velocity was significantly increased post 6 week test than pre-test, post 2 week test. COP anterior-posterior(AP) velocity was significantly increased post 6 week test than pre-test (p<.05). Conclusion : It was found that both OKC and CKC was significantly increased balance recovery in normal younng adults. In further study, it was suggested that was regard patient with muscle weakness.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2010.05a
• /
• pp.1099-1103
• /
• 2010

본 연구에서는 기후변화로 인한 부산 강우특성을 고려하고 강수량의 증감을 알아보기 위하여 부산 기상청 지점의 강우 자료를 수집하고 분석하여 월, 계절, 연 평균강우와 지속시간별 연최대 강우량 및 강우강도(30 mm 이상)를 Trend 분석하였다. 분석기법은 T Test, Hotelling Pabst Test, Non Linear Test, Mann-Kendall Test, Sen Test이고 0.99, 0.95, 0.90의 유의수준별로 분석하였다. 분석된 결과는 1등급에서 4등급까지 등급화하고, 특히 Sen Test의 Slope는 빈도분석하여 등급화하였다.

• The Journal of the Korea Contents Association
• /
• v.18 no.8
• /
• pp.187-196
• /
• 2018

This study seeks to analyze the effects of senior citizens' perception of sex on the life satisfaction in an empirical manner, and to present practical measures to improve senior citizens' perception of sex and life satisfaction based on the analysis results. To realize these research purposes, survey was administered targeting senior citizens who are at least 65 years old who reside at the Cities K and S in do-Jeollanam Province. As a result, 168 copies excluding unreliable answers were used for the final analysis. Collected data was subjected to SPSS 20.0 analysis, and the factor analysis, reliability analysis, frequency analysis, Pearson correlation analysis, t/F-test and regression analysis were carried out. Based on these analysis results, the following programs were suggested; development of the senior citizen sex education program to provide knowledge and information on sex, cultivation of the experts and establishment of counseling institutions that handle senior citizens' sex issue exclusively and execution of the social training and PR targeting the general public.

• Journal of Korean society of Dental Hygiene
• /
• v.12 no.1
• /
• pp.37-46
• /
• 2012

Objectives : This research was investigated to evaluate the psychological characteristics and changes of psychological state among dental orthodontic patients. Methods : This cross-sectional questionnaire research was conducted with 230 dental orthodontic patients in Busan from December 23, 2009 to March 6, 2010. The psychological analysis of dental orthodontic treatment patients was performed with Symptom checklist-90-revision(SCL-90-R) considering 5 general characteristics and 2 treatment period related characteristics. Estimated psychological results were changed T-score. Data analysis was performed with descriptive analysis, t-test and ANOVA using SAS(ver 9.1) program. Results : The levels of T-score of SCL-90-R were $43.88{\pm}7.50$ in hostility(HOS), $43.38{\pm}4.64$ in phobic anxiety(PHOB), $43.20{\pm}6.24$ in somatization(SOM), $42.13{\pm}6.71$ in paranoid ideation(PAR), $41.39{\pm}8.16$ in interpersonal sensitive(I-S), $41.01{\pm}7.90$ in obsessive-compulsive(O-C), $40.96{\pm}5.37$ in psychoticism(PSY), $40.96{\pm}5.19$ in anxiety(ANX) and $39.81{\pm}6.80$ in depression(DEP), respectively. The T-score of phobic anxiety in before treatment group was higher than that of treatment groups. The T-score of interpersonal sensitive and paranoid ideation in over 36 months treatment period group were higher than that of other treatment period groups. Conclusions : Phobic anxiety(PHOB), interpersonal sensitive(I-S) and paranoid ideation(PAR) were affected in pre-treatment and long-term treatment dental orthodontic patients. Psychological management methods considering treatment period are needed to improve mental health of dental orthodontic patients.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.19 no.5
• /
• pp.723-737
• /
• 1995

The purposes of this study were to investigate 1) the difference of cognitive evaluation on body exposure of female clothing, ann 2) purchase frequency and intention of wearing according to demographic variables. The instrument of this study consisted of response scale and stimuli. Thirty three items of 7.point Likert scale were developed to measure cognitive evaluation of the people who responded. The stimuli were 7 types of clothing, differing exposure parts and style on line drawing. The sample included 450 subjects, consisting of 231 in Seoul and 219 in Chun-nam Province. Statistics applied for analysis were frequency, percentage, mean, standard deviation, correlation, t-test, F-test, Duncan's multiple range test, factor analysis. The Results were: 1. Constructing factors of cognitive evaluation consisted of elegance, sensuality, attraction, individuality. There were significant differences in every factor on each types of clothing. 2. The evaluation toward each types of clothing was influenced by the subjects' sex, age, and residence. 3. Purchase frequency and intention of female subjects' wearing were very low, and there were significant differences on demographic variables.