• Journal of the Korean Society of Clothing and Textiles
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• v.5 no.1
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• pp.1-7
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• 1981

The purpose of this study was to investigate the attitudes of handed-me-down clothing in the Che-ju elementary school children. Measures of attitudes toward handed-me-down clothing consisted of: 1) attitudes of receiver's 2) feeling of receive.'s 3) behaviors 4) possession 5) frequency of wearing handed-me-down clothing. Two aspects of clothing behaviors were slightly modified to assess conformity?individuality, satisfaction in clothing. The sample consisted of 565 students in Che-ju elementary school children, Korea. The data, collected by means of a self-administered questionaire, were analysed by Chi-Square ($X^2$) and Correlation(R). The results indicated that: 1. Handed-me-down clothing was not significantly different between elder brothers (sisters) and child. 2. Most of the children wanted to wear comfort, good style, fit and neat in handed-me-down clothing. 3. Most of the children were satisfied with their handed-me-down clothing and tended not to be aware of the source in clothing. 4. Most of the children had higher interest of individuality and satisfaction in clothing behaviors.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.5
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• pp.1790-1806
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• 2015

Utility-based routing is a special type of routing approach using a composite utility metric when making routing decisions in ad hoc and sensor networks. Previous studies on the utility-based routing all use fixed retry limit and a very simple distance related energy model, which makes the utility maximization less efficient and the implementation separated from practice. In this paper, we refine the basic utility model by capturing the correlation of the transmit power, the retry limit, the link reliability and the energy cost. A routing algorithm based on the refined utility model with adaptive transmit power and retry limit allocation is proposed. With this algorithm, packets with different priorities will automatically receive utility-optimal delivery. The design of this algorithm is based on the observation that for a given benefit, there exists a utility-maximum route with optimal transmit power and retry limit allocated to intermediate forwarding nodes. Delivery along the utility-optimal route makes a good balance between the energy cost and the reliability according to the value of the packets. Both centralized algorithm and distributed implementations are discussed. Simulations prove the satisfying performance of the proposed algorithm.

• Journal of the Korean Home Economics Association
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• v.42 no.1
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• pp.81-97
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• 2004

The purpose of this study was to examine children's consumption level and related factors in an effort to lay the foundation for teaching children to lead rational consumer life and for improving consumer welfare, as it's assumed in this study that children's consumption problems would affect themselves throughout their lives. This study specifically intended to find out (1) child consumer problems, (2) how children's consumption problems were affected by their demographic variables, (3) whether consumer-education experience made any differences to their consumption problems at school, home and society, and (4) what types of demographic and consumer-education variables exercised influence on consumption problems. The findings of this study were as follows： First, children investigated were found to have middle level of consumption problems. Purchasing goods scored the lowest, and using goods scored the highest among consumption problems. Second, it turned out that boys suffered more consumption problems than girls. The reason seemed that as boys generally have lower experience in consumption attitude. Third, as to the correlation of the children's consumption problems to their consumer-education experience, money management was significantly associated with the presence or absence of experience to learn at school how to manage and save allowances. Also, the experience of consumer education by parents made a significant difference. The children's consumer consciousness and attitude varied with their experience to receive consumer education from mass media.

• Journal of The Korean Association For Science Education
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• v.24 no.4
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• pp.774-784
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• 2004

In the previous study, six factors which could disturb students' problem solving in an everyday context were identified and discussed. In this study, teaching materials to help students overcome those disturbing factors for successful problem solving in an everyday context were developed and applied to twenty-nine grade 10 students, and the effects of teaching materials were analyzed. According to the analysis of the correlation between the performance in everyday context problem solving and the benefit from the teaching materials, it was found that students who received the help from the teaching materials showed better performance with statistical significance. And students noted that teaching materials were helpful for them to solve the physics problems. Analyzing the overall performance of students in solving the everyday context problem, students in the experimental group showed better performance than the control group and this performance difference was larger among low-score students in school science testing. However, these differences were not statistically significant because the sample size was small. And, based on the analysis of interviews with students, it was also found that some students who showed low performance might not receive help from the teaching materials because the materials were too complex to be read easily, or because the basic concepts needed to solve the problem were not understood. Therefore, the results obtained from the interviews will be used to design more effective teaching for problem solving in an everyday context.

• Korean Journal of Occupational Health Nursing
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• v.22 no.1
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• pp.47-56
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• 2013

Purpose: This study is to identify the factors that affect middle-aged workers' health promoting behaviors. Methods: 214 middle-aged workers participated in surveys, and the data were collected from August to September 2012 and analyzed by using descriptive statistics, Pearson's correlation coefficient, and multiple regression analysis with PASW 18.0 program. Results: It was found that among the factors, the degree of job stress (t=7.69, p<.001) and depression (t=6.23, p<.001) were significantly high for type D individuals, while non type D showed meaningful degree of self-related health status (t=-3.66, p<.001) and health promoting behaviors (t=-4.71, p<.001). The notable variable that affected the health promoting behaviors of the middle-aged workers was depression for both type D (${\beta}$=-.357, p= .029) and non type D (${\beta}$=-.325, p<.001) individuals, and this variable accounted for 24.1% and 18.2% respectively. Conclusion: The study revealed that the middle-aged workers showed high degree of job stress and depression that influenced on their health promoting behaviors. Thus, they are recommended to receive health management programs that offer treatment through consulting considering their individual personalities.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.41 no.7
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• pp.55-61
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• 2004

This paper proposes an antenna selection and switching system between spatial multiplexing and diversity techniques. The proposed system overcomes spatial correlation by using antenna selection method and improve bit error performance with switching encoding nudes between a spatial multipexing encoder and a diversity encoder. Therefore, in a 4 transmit and 2 receive antenna system first, the proposed system selects 2 transmit antennas, and next, switches encoding modes between Space-Time Transmit Diversity and BLAST according to instantaneous channel information. Computer simulations showed that the proposed system improves about 2 or 3 ㏈ SNR in low correlated channel and about 3 ㏈ SNR in highly correlated channel rather than a 2 by 2 antenna switching system.

• Earthquakes and Structures
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• v.8 no.4
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• pp.821-841
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• 2015

This paper proposes a two-stage imaging approach for quantitative inspection of damages in metallic plates using the fundamental anti-symmetric mode of ($A_0$) Lamb wave. The proposed approach employs a number of transducers to transmit and receive $A_0$ Lamb wave pulses, and hence, to sequentially scan the plate structures before and after the presence of damage. The approach is applied to image the corrosion damages, which are simplified as a reduction of plate thickness in this study. In stage-one of the proposed approach a damage location image is reconstructed by analyzing the cross-correlation of the wavelet coefficient calculated from the excitation pulse and scattered wave signals for each transducer pairs to determine the damage location. In stage-two the Lamb wave diffraction tomography is then used to reconstruct a thickness reduction image for evaluating the size and depth of the damage. Finite element simulations are carried out to provide a comprehensive verification of the proposed imaging approach. A number of numerical case studies considering a circular transducer network with eight transducers are used to identify the damages with different locations, sizes and thicknesses. The results show that the proposed methodology is able to accurately identify the damage locations with inaccuracy of the order of few millimeters of a circular inspection area of $100mm^2$ and provide a reasonable estimation of the size and depth of the damages.

• Journal of Korean Academic Society of Home Health Care Nursing
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• v.24 no.2
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• pp.133-141
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• 2017

Purpose: This descriptive study aims to analyze the effects of the satisfaction level in the relationship between mother-in-law and daughter-in-law, conflicts between them, acculturative stress and stress coping strategies on elderly depression in multi-cultural families. Methods: The survey was conducted on 89 mothers-in-law, aged 65 or older, in multi-cultural families with a foreign daughter-in-law. Data were collected through structured questionnaires, and then were used to conduct t-test, ANOVA, correlation and multiple regression analyses using the statistical program SPSS 21.0. Results: This study found several factors contributing to depression of mothers-in-law in multi-cultural families. Those factors include living alone without a spouse, poor health, a high level of perceived discrimination and a passive reaction in terms of stress coping strategies. Conclusion: A sense of discrimination perceived by the mothers-in-law having a foreign daughter-in-law implies that the people around them and the community should make efforts to reject distorted perspectives and remove prejudice against foreign daughters-in-law. In addition, the mothers-in-law should receive education and training to use more active and positive stress coping strategies in a stressful situation with the foreign daughter-in-law.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.12 no.1
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• pp.73-80
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• 2005

Purpose: This study examined the relationship between level of activity of daily living (ADL) and Self-Care Agency in patients who have had a spinal cord injury. Method: The participants in the study were 78 persons who had a spinal cord injury and were between 20 and 70 years of age. The data were collected from November 1, 2003 to January 30, 2004. The instruments used in this study were the ADL Check List and Self-Care Agency Scale. The data were analyzed using the SPSS program and included numbers, percentages, t-test and ANOVA, and Pearson correlation coefficients. Results: The total mean score for activity of daily living was $44.21{\pm}16.63$. The total mean score fur Self-Care Agency was $107.45{\pm}15.71$, There was a significant difference between scores for ADL and Self-Care Agency. Conclusion: In order to increase the level of ADL, rehabilitation nurses should ensure that these patients receive training in ADL. Also, it was identified that informational support is important, that is, nurses should help to provide these patients with Self-Care Agency training for ADL.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.151-151
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• 2019

Because drought is a complex and stochastic phenomenon in nature, statistical approaches for drought assessment receive great attention for water resource planning and management. Generally drought characteristics such as severity, duration and intensity are modelled separately. This study aims to develop a relationship between drought characteristics using a bivariate copula model. To achieve the objective, we calculated the Standardized Precipitation Index (SPI) using rainfall data at 6 rain gauge stations for the period of 1961-1999 in Jehlum River Basin, Pakistan, and investigated the drought characteristics. Since there is a significant correlation between drought severity and duration, they are usually modeled using different marginal distributions and joint distribution function. Using exponential distribution for drought severity and log-logistic distribution for drought duration, the Galambos copula was recognized as best copula to model joint distribution of drought severity and duration based on the KS-statistic. Various return periods of drought were calculated to identify time interval of repeated drought events. The result of this study can provide useful information for effective water resource management and shows superiority against univariate drought analysis.