• Korean Journal of Rural Living Science
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• v.4 no.2
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• pp.99-114
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• 1993

This study is conducted to find out what differences are made on among home-environmental variables, family cohesion, adaption and communication, and to define what variables influence to communication satisfaction of adolescent children. Questionaire survey method was used. The subjects of this study were 578 male and female middle school students living in Kwangiu from July 6, 1992 to July 15, 1992. For the statistical analysis of data, frequency distribution, percentage, average, standard deviation, T-test, F-test, Pearson's correlation and regression analysis were performed. The main findings were as follows : 1) Family cohesion and adaptability variables showed significant difference according to adolescent's sea age, father's education level, income level, occupation and father's religion. 2) Communication showed significant difference according to adolescent's sex, age, father's age, education level, income level, occupation and father's religion. 3) Communication satisfaction showed significant difference about adolescent's age, father's income level. 4) Communication satisfaction showed significant difference by high level in reference to family cohesion and adaptability. 5) Communication satisfaction in reference to communication showed significant difference. 6) The most influential variable on communication satisfaction between fathers and their adolescents children was active response and marked positive influence in order family adaptability, friendly nonverbalism.

• Proceedings of the Korean Society For Composite Materials Conference
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• 2002.10a
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• pp.60-63
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• 2002

Metal/intermetallic laminated composites have been manufactured by SHS reactions between Ni and Al elemental metal foils. Microstructure showed that the intermetallic volume fraction was 55%, 45%, 35% in the 1:1, 2:1, 4:1 thickness ratio(Ni:Al) specimen and the main phases of the intermetallic were transformed from $Ni_2Al_3$ to NiAl when the thickness ratio was increased. Tensile strength and elongation were increased when the volume fraction of Ni metallic phase was increased. Under assumptions of isostrain condition, the tensile strength of metal/intermetallic laminated composites didn't obey the ROM due to the thermal residual stress and this was confirmed by X-ray residual stress analysis. Fracture toughness results by the SENB test showed R-curves with upward curvature based on LSB condition. Bridging stress based on LSB condition was determined by the curve fitting analysis, In-situ observed microstructure during fracture test showed that the various bridging mechanism such as crack bridging, crack branching and ductile failure of metallic layer were occurred

• Korean Journal of Adult Nursing
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• v.19 no.1
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• pp.109-120
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• 2007

Purpose: This study was conducted to investigate factors related to middle-aged women's health beliefs and their intention to practice health behaviors for preventing and improving hypertension. Methods: The participants were 319 middle-aged(40-59 years) women who lived G city. Data was collected from January to February, 2005. Personal interviews were performed. The data was analyzed using t-test, ANOVA, Scheffe's multiple comparison test and hierarchial multiple regression analysis. Results: Perceived susceptibility of health belief was high in those who had higher educational level, disease history and health education experience, significantly(p<0.05). Perceived seriousness was high in those who had higher educational level, middle economic status and health education experience, significantly(p<0.05). Perceived benefits was high in those who had higher educational level and perceived barriers was low in those who had disease history and hypertension, significantly(p<0.05). The subject's intention to practice health behaviors was significantly high in those who were younger, who had higher educational level and menopausal status(p<0.05). In hierarchial multiple regression analysis, the subject's intention was related to perceived seriousness, perceived benefit and educational level, significantly(p<0.05). Conclusion: It is necessary to develope the education programs which can increase the subject's health belief and intention to practice health behaviors towards hypertension in middle-aged women.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.08a
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• pp.142-147
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• 1998

Recently, 8 kb/s CS-ACELP coder of G.729 is atandardized by ITU-T SG15 and it has been reported that the speech quality of G729 is better than or equal to that of 32kb/s ADPCM. However G.729 is the fixed rate speech coder, and it does not consider the property of voice activity in mutual conversation. If we use the voice activity, we can reduce the average bit rate in half without any degradations of the speech quality. In this paper, we propose an efficient variable rate algorithm for G.729. The variable rate algorithm consists of two main subjects, the rate determination algorithm and algorithm, we combine the energy-thresholding method, the phonetic segmentation method by integration of various feature parameters obtained through the analysis procedure, and the variable hangover period method. Through the analysis of noise features, the 1 kb/s sub rate coder is designed for coding the background noise signal. So, we design the 4 kb/s sub rate coder for the unvoiced parts. The performance of the variable rate algorithm is evaluated by the comparison of speed quality and average bit rate with G.729. Subjective quality test is also done by MOS test. Conclusively, it is verified that the proposed variable rate CS-ACELP coder produced the same speech quality as G.729, at the average bit rate of 4.4 kb/s.

• Korean Journal of Human Ecology
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• v.9 no.3
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• pp.37-45
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• 2006

The purpose of this study was university student's preference for own house in future according to gender. This was the investigation of which 512 university students in Jeollabukdo province. In this statistical analysis, SPSS 11.5 program was utilized to calculate percentage, mean and standard deviation. Also, these materials were verified by factor analysis, t-test and $x^2$-test. The results of this study were as follows: The university students' future housing environment preferences has been appeared to be higher in the environmental equipment and the natural scenery. In the case of the gender variables was appeared to be higher for female than male students. The future housing area most of the university students wanted the medium city or over, $25{\sim}33\;p'y{\breve{o}}ng$ apartment, 3 bed rooms, 2 bathroom. In case most students have a yard in their future house, they'd like to grow lawn and trees. Also, they wanted to live in a short distance with their future parents-in-law. Therefore, It was desirable that make a plan based on the results of this study future-residing for the new generation.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.90-100
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• 2017

This study seeks to identify factors influencing the gender equality consciousness of university students and provide data to increase gender equality consciousness for university students based on the results. The subjects of university students in D and G city at the time, data collection was from April 1, 2016 to April 14, 189 questionnaires were used in the final analysis. The collected data using SPSS/WIN 20.0 program percentages, means and standard deviations, t-test, ANOVA, post verification was analyzed by scheffe's test, correlation between variables affect the Pearson's correlation coefficient, gender equality consciousness used a multiple regression analysis. In results of the study, gender equality consciousness appeared as $3.23{\pm}0.48$ points. Gender equality consciousness were a negative correlation with gender role stereotypes(r=-.711, p<.001) and a positive correlation with self-esteem correlation(r=.186, p=.011) and showed a negative correlation with control (r=-383, p<.001). Factors affecting gender equality in research subjects appeared to be gender role stereotypes and control, explanatory power was found to be 50.1%. Through this research requires the fellow study to determine the various factors affecting the gender equality consciousness of university students, it is necessary to improve the gender equality consciousness.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.11
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• pp.1404-1414
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• 2004

This study examines how the stereotype in a society toward the roles of teachers and students affects their hair styles and ornaments and defines it through the cultural tag, 'like'. A survey of 362 male and female students in colleges located in Seoul and Gyeonggi areas was conducted. The data analysis was done by SPSS 10.0 and the difference of sample means between the groups in addition to basic statistics was evaluated. The t-test was made to test statistically significant difference between the groups. The results of the analysis are summarized as follows: First, the hair styles, shoes and ornaments that are recognized as appropriate for the roles of male students are short cut and black hair, sneakers and necktie. In that case of female students, medium and long hair style, black and brown hair, Loafer, hairpin and hairband are recognized properly. The hair styles, shoes and ornaments that are recognized as appropriate for the roles of male teachers are short cut and black hair, oxfords and necktie. In that case of female teachers, cut, medium, long, permanent and up style, 1)lack and brown hair, pumps, necklace, ring, earring, bracelet, hairpin, hairband, scarf and muffler are recognized appropriately. Second, the stereotype of male students and teachers's roles was more traditional, normative, and limited than that of female students and teachers's. The role of female teachers showed more generous than that of male students, female students, and male teachers.

• Journal of the Korean Society for Precision Engineering
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• v.34 no.1
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• pp.19-22
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• 2017

This paper describes the efficient equipment maintenance that can offer the exact time for repair and change of component in root industry. A conventional method offered the fixed time for repair and change of component because the method is based on early guarantee specification of the component. However the operating condition of manufacturing field is often under worse condition than early guarantee condition for high productivity. So, most components can't use until early guarantee time due to the operation of various different condition. Therefore we suggest the useful method for efficient equipment-maintenance by manufacturing-field analysis and feedback database. For this, the classification of root industry and related equipment is performed and then the detail classification of the process and component for equipment maintenance. And the monitoring module is also designed to gather data for feedback process and the environment is basically implemented for aging and reliability test.

• Journal of Power System Engineering
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• v.13 no.5
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• pp.89-94
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• 2009

In this work, the optimal process has been designed by $L_9(3^4)$ orthogonal array and analysis of variance(ANOVA) for thermal-sprayed Ni-based hard coating. Ni-based hard coatings were fabricated by flame spray process on steel substrate. Then, the hardness test and observation of microstructure of the coatings were performed. The results of hardness test were analyzed by ANOVA. The ANOVA results demonstrated that the acetylene gas flow had the greatest effect on hardness of the coatings. The oxygen gas flow was found to have a neglecting effect. From these results, the optimal combination of the flame spray parameters could be predicted. The calculated hardness of the coatings by ANOVA was found to lie close to that of confirmation experimental result. Thus, it was considered that design of experiments design using orthogonal array and ANOVA was useful to determine optimal process of thermal-sprayed Ni-based hard coating.

• Journal of the Korean Society of School Health
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• v.29 no.3
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• pp.201-208
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• 2016

Purpose: This study was designed to examine the factors related to school adjustment of upper graders in elementary school. Methods: Data was collected through a questionnaire survey of 304 fifth and sixth grade students from October to November, 2014. The collected data was analyzed statistically through frequency, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficient and multiple regression analysis, using the SPSS/WIN 22.0 program. Results: First, subjective school record and subjective health status showed significant differences in school adjustment. Second, social support and ego-resilience were positively correlated, while bullying was negatively correlated with school adjustment. Third, significant factors related to school adjustment were social support, ego-resilience, subjective school record. These variables explained 56.4% of the students' school adjustment. Bullying was negatively correlated with school adjustment, but the correlation disappeared in the multiple regression analysis, where protective factors such as social support, ego-resilience were controlled for. Conclusion: School nurses should develop plans to enhance social support (teacher support, parents support, friends support) as well as programs to improve the ego-resilience of upper elementary students to help them adjust to school and to prevent and manage bullying. Also family, school and the community should be connected cooperatively with each other.