• The Journal of the Korea Contents Association
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• v.13 no.7
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• pp.214-227
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• 2013

The primary objectives of this study are twofold. One is to examine the psychometric properties of Family Empowerment Scale(FES) developed by Koren, DeChillo and Frisen(1992). The other is to develope a short-form FES. Data collected from 337 members of Parents' Solidarity of Children with Disabilities were used. FES had good internal consistency, but the results of confirmatory factor analysis(CFA) did not support the theoretical factor structure of the scale. Basic analyses such as correlation and descriptive analysis were performed to examine the characteristics of individual items and identify the limitation of the orignal FES. In addition, a series of CFA were carried out to develop a short-form FES. Finally 15 items were selected based on theoretical rationale and the results of CFA. Cronbach's ${\alpha}$ and the model fit indices for the short-form FES indicated that this measure has good construct validity as well as internal consistency. In discussion, usefulness and potential contribution of this study were explored in relation to content development in the area of measuring instruments.

• Journal of the Korean Applied Science and Technology
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• v.37 no.3
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• pp.613-624
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• 2020

This study is a descriptive research to grasp the effects of nursing performance on emotional labor, job stress and resilience in general hospital nurses. Method: I surveyed them using a structured questionnaire for collecting data from Aug. 20, 2019 to Sep. 2, 2019. The collected data were analyzed by the frequency, the percentage, t-test, ANOVA, Scheffe's Test, Pearson's Correlation Coefficient, and Multiple Regression Analysis. Results: The factors affecting nursing performance of the subjects were resilience (β=0.58, p<.001), and current position is head nurse (β=0.21, p<.01), the number of working years at current working place (β=0.18, p<.05). The F statistics for the fit of the estimated regression model was very significant as 30.901(p<.001) and the explanatory power was 42.4%. Conclusion: The results of this study showed that resilience was the most influential factor to nursing performance of general hospital nurses, and the number of working years at current working place was the most influential factor to the performance of head nurses. Therefore, it is necessary to develop practical programs strengthening resilience of nurses for the improvement of nursing performance and to apply strategies on development.

• Journal of the Korean Institute of Intelligent Systems
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• v.20 no.6
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• pp.786-792
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• 2010

This paper presents a real-time lane detection method which can accurately find the lane-mark boundaries in complex road environment. Unlike many existing methods that pay much attention on the post-processing stage to fit lane-mark position among a great deal of outliers, the proposed method aims at removing those outliers as much as possible at feature extraction stage, so that the searching space at post-processing stage can be greatly reduced. To achieve this goal, a grid-based morphology operation is firstly used to generate the regions of interest (ROI) dynamically, in which a directional edge-linking algorithm with directional edge-gap closing is proposed to link edge-pixels into edge-links which lie in the valid directions, these directional edge-links are then grouped into pairs by checking the valid lane-mark width at certain height of the image. Finally, lane-mark colors are checked inside edge-link pairs in the YUV color space, and lane-mark types are estimated employing a Bayesian probability model. Experimental results show that the proposed method is effective in identifying lane-mark edges among heavy clutter edges in complex road environment, and the whole algorithm can achieve an accuracy rate around 92% at an average speed of 10ms/frame at the image size of $320{\times}240$.

• Journal of Families and Better Life
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• v.21 no.2
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• pp.1-18
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• 2003

In recent years, Korean society has witnessed an increased interest in the observance of everyday life proprieties, building healthy families, and psychological well-being of family members. The main purpose of this research was to examine the relationships among the practice of everyday life proprieties, dynamics of family systems, and psychological well-being of Korean married couples. A self-report Questionnaire was used to collect data from married couples with a child over four-years-old who are currently residing in Seoul. 513 couples(1026 individuals) were used for the final data analysis. Statistical analyses were conducted using frequencies, percentages, means, standard deviations, Cronbach'α, Pearson correlation, paired t-test, factor analysis, and multiple regression. The findings of this study are as follows: First, the level of the practice of everyday life propriety was relatively high in both husbands and wives, and no significant gender difference was found in the level. Yet, there were some statistically significant differences in certain sub-dimensions. Wives showed a higher degree of performance in public decorum and social etiquette, whereas husbands exhibited a higher degree of performance in family decorum and communication manners. The family systems were highly dynamic, according to both husbands and wives, and there was no difference between husbands and wives. As for the sub-dimensions, the extent of communication was found to be higher among husbands than among wives. Psychological well-being was again relatively high for both husbands and wives, with husbands significantly higher than wives. Second, the findings indicate that the causal model did fit the data well, and that a myriad of background variables had direct and indirect impacts on psychological well-being, and these relationships were mediated by several variables in the sub-dimension of proprieties observance, family adaptability, and the degree of communication. The implication is that the practice of life propriety, an intervening variable, is crucial in improving psychological well-being of married couples. The findings of this research demonstrate that there are significant causal relationships among the practice of everyday life propriety, family systems dynamics, and psychological well-being. In addition, the observance of proprieties is shown to be a concept that can be used as an important predictor in the area of family resource management. Further research is needed to expand its focus on the practice of proprieties in the family resource management. More concrete and specialized family life education programs should be developed to help build healthy families. Lastly, the results indicate that proprieties education needs to be incorporated in family policies in order to promote the quality of family life.

• Food Science and Preservation
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• v.15 no.3
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• pp.332-339
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• 2008

This study was performed to investigate the sorption characteristics and shelf-life of coated ascorbic acid Stability of ascorbic acid, which oxidizes easily during storage and processing, was achieved by applying a fluidized bed coating using Zein-DP and HPMC-FCC as covering materials. The monolayer moisture content calculated using the GAB equation showed a higher level of significance than when calculated using the BET equation. The fit to the isotherm curve was in the order of Halsey, Caurie, Oswin and Khun. The equilibrium relative humidity prediction model was established in terms of time and water activity, it had higher significance. The stability of the coated ascoribic acid during storage was investigated in terms of radical-scavenging activity, which decreased with increasing time of storage and was more affected at higher storage temperatures. The quality reduction rate constant (k) was calculated by a first-order reaction rate. The reaction rate constant increased with increasing storage temperature. The shelf-life of Zein-DP-coated ascorbic acid was estimated to be 45.83 days at 20C and 63.19 days at 10C, and the shelf-life for HPMC-FCC-coated ascorbic acid was estimated to be 28.84 days at 20C and 36.14 days at 10, the ascorbic acid was 24.52 days at $20^{\circ}C$ and 27.22 days at $10^{\circ}C$, respectively. Therefore, the fluidized bed coating effectively increased the stability of ascorbic acid.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.19 no.2
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• pp.48-61
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• 2020

The objective of this study is to estimate traffic capacity based on the heavy-vehicle ratio in a two-lane freeway work zone where one lane is blocked by construction. For this, closed circuit television (CCTV) video data of the freeway work zone was collected, and the congestion at an upstream point was observed. The traffic volume at a downstream point was analyzed after a bottleneck was created by the blockage due to the upstream congestion. A distribution model was estimated using observed-time headway, and the road capacity was analyzed using a goodness-of-fit test. Through this process, the general capacity and an equation for capacity based on the heavy-vehicle ratio passing through the work zone were presented. Capacity was estimated to be 1,181~1,422 passenger cars per hour per lane (pcphpl) at Yeongdong, and 1,475~1,589pcphpl at Jungbu Naeryuk. As the ratio of heavy vehicles increased, capacity gradually decreased. These findings can contribute to the proper capacity estimation and efficient traffic operation and management for two-lane freeway work zones that block one lane due to a work zone.

• Journal of Digital Contents Society
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• v.15 no.1
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• pp.19-27
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• 2014

In order to estimate the life of 2,5 inch HDD which is adopted by PC environment, make the test plan which reflect the failure mode of market, make the test model of accelerated life test which reflect the stress of temperature. after an analysis of the environment of PC using, test procedure was decided that operation was write 50 % and read 50 %, and then access method was sequential 50 % and random 50%. The acceleration life test was executed on condition that temperature was $50^{\circ}C$ and $60^{\circ}C$, performance was 95 % in max performance, test time was 1000 hours. by the test of goodness of fit of anderson-darling of the failure data during test, it was confirmed that the distribution of failure fellow weibull. test for shape and scale was equal, and shape parameter was 0.7177, characteristic life was 429434 hours at normal user condition($30^{\circ}C$) by the analysis of weibull-arrhenius modeling. It made no difference about the statistics when equality test was executed. The activation energy was 0.2775eV. In analyzing between the failure samples of acceleration test and the samples of market return even though there is detail difference about the share of failure mode, the rank of share was almost same. This study suggest the test procedure of acceleration test of 2.5 inch HDD in PC using environment, and help the life estimation at manufacture and user.

• Culinary science and hospitality research
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• v.21 no.5
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• pp.1-13
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• 2015

The purpose of this study is to investigate the moderating effects of consumer's trust on the relationships among consumer's corporate association, self image congruence and satisfaction in the food companies. The survey was administerd to 215 consumers living for Seoul in Korea. The results indicated that the proposed model fit to the data well(${\chi}^2$(df=113)=221.565, GFI=.889, CFI=.960, RMSEA=067). The finding showed that consumer's corporate ability(${\beta}=.323$) and corporate social responsibility(${\beta}=.454$) among corporate association have a significantly positive effect on their self image congruence and self image congruence significantly positive effect on consumer satisfaction(${\beta}=.339$). In addition, consumer's corporate ability was significantly positive effect on their satisfaction(${\beta}=.373$). Also, this study found moderating effects of consumer's trust on the relationship between corporate association and consumer satisfaction, the results indicated that significant relationships varied to consumer's trust level. Limitations and future research directions are also discussed.

• The Journal of Information Technology
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• v.1 no.1
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• pp.85-101
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• 1998

Information system, organization structure, and business strategy have been major variables in MIS research. Most of research about these variables interested in the relationship of two variables. There were very few efforts to connect three variables. But relationship or fitness of these factors plays an important role to improve performance. Nowadays managers face new challenge. That is 'globalization' To cope with this turbulent environment, they have to know how to fit these Important factors(information system, organization structure, business strategy). It is the main purpose of this article to find out the fitness of these variables under global business environment. Based on literature review, I made research model which tells whether fitness of three variables affects performance under the control of headquarter. And I propose hypothesis. I define strategy as global innovator, integrated player, implementers role, local innovator and organization structure as multinational, global, international, trans-national and information system as independent IT operation, headquarter driven configuration, intellectual synergy configuration, global integrated IT configuration.

• Applied Chemistry for Engineering
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• v.9 no.5
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• pp.742-748
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• 1998

Experiments have been conducted to investigate synergistic effects and mechanisms of the Alaskan subbituminous coal/polypropylene (PP). Coliquefaction of coal/PP gave the synergistic effect in yields by 17% compared to independent liquefactions of coal or PP at $430^{\circ}C$. To analyse coliquefaction mechanisms, the second and zeroth order kinetic models were developed for coal and PP conversions respectively. When the models were simulated to fit coliquefaction results, those represented results successfully with the correlation coefficient of 0.99. The amount of tetralin needed to liquefy unit mass of coa 1(${\beta}$) was also calculated using the developed model. According to the calculated results, $\beta$ increased from 0.4 to 1.0 as the coliquefaction temperature increased from $410^{\circ}C$ to $470^{\circ}C$. This indicated that tetralin lowered the molecular weight of oil produced, and this phenomenon was recognized by the GPC analyses. Furthermore, it was found that tetralin prohibited the liquefaction of PP when coal was not added. On the other hand, tetralin was believed to act as a hydrogen-donor solvent to coal rather than prohibit PP liquefaction during coliquefaction. Therefore, the liquefaction rate of PP increases and synergistic effects in oil yields are mainly due to the increase in PP liquefaction during coal/PP coliquefaction.