• Research in Community and Public Health Nursing
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• v.18 no.4
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• pp.552-561
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• 2007

Purpose: The purpose of this study was to identify the factors influencing drinking problems in female university students to provide basic data for a nursing intervention program to improve health and prevent drinking problems. Method: Data were collected from September 17 to 21, 2007 through a questionnaire survey of 325 female college students in G City. Collected data were analyzed using descriptive statistics, pearson correlation coefficients and stepwise multiple regression. Result: The most powerful predictor of drinking problems was refusal self efficacy. The combination of the influence of friends, perceived stress, personality of novelty seeking, and alcohol expectancy accounted for 23.7% of the variance in drinking problems. Conclusion: From the results, I recommend that refusal self efficacy, influence of friends, perceived stress, personality of novelty seeking, and alcohol expectancy should be contained in developing nursing intervention programs for preventing drinking problems in female university students.

• Proceedings of the KIEE Conference
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• 1993.07a
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• pp.61-63
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• 1993

This parer propose an adaptive methodlogy for setting of the underfrequency relays that is based on the initial rate of change of the frequency at the relay. During severe emergencies which result in insufficient power generation to meet load, an automatic load shedding program throughout the affected area can prevent total collapse. To avoid this kind of insufficient power generation, load shedding relays are often applied throughput the system to provide a means of helping balance the load to the remaining generation. Comparing, it has been found that the use of the proposed method for the amount and the timing of load shed more efficiently than the conventional method.

• Journal of Community Nutrition
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• v.8 no.3
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• pp.134-141
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• 2006

The purpose of this study was to examine and understand the level of vanity and body shaping management and the relationships among related variables. The data were collected from about 140 middle school girls, 186 high school girls, and 194 college female students in Ulsan City using a self-administered questionnaire. The questionnaire included questions such as general characteristics of the subjects, vanity, and body shaping management. There were statistically significant differences in the 4 vanity sub-scales except physical concern and the body shaping management among the school groups(middle school, high school, college) and socio-economic status groups(low, middle, high). Socio-economic status, physical concern and view, and age were affected significantly on the body shaping management. Moderate vanity and body shaping management can prevent obesity and motivate personal development. A nutrition education program for excessive groups in the vanity and body shaping management needs to be developed.

• Proceedings of the KIEE Conference
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• 1993.07b
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• pp.965-967
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• 1993

In this paper, Take two perment magnets and three iron bars and wind copper wire around one or the bars. This paper demonstrate that the method or calculation yields the right results with MAXWELL-2D program package for computing magnetic field, also indicate the value to which the current in the coil has to be limited to prevent saturation of the iron or the cores. The Finally procedures for design of LDM are discussed.

• Proceedings of the KIEE Conference
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• 2004.11b
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• pp.223-226
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• 2004

This paper describers the power demand and the voltage stability in power system. Especially the power demand on summer is more and more increase in korea. According to load quantity is increasing voltage is getting down. And power system becomes unstable. So this paper is prevent voltage down using to ULTC modeling which is a part in a transformer. Therefore our purpose is power system stability increasing as variable state like a load increasing or a fault. Then this paper is using IPLAN and PSS/E as analysis tool. PSS/E is very powerful engine on load flow analysis. And IPLAN is capable of using on variable program compiling with user.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.11
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• pp.21-31
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• 1998

This study described computer aided die design system for cold forging of non-axisymmetric parts. To design the die of cold forging. an integrated approach based on a rule-base system and commercial F. E. code were adopted. This system is implemented on the personal computer and its environment is a commercial CAD package named as AutoCAD. The system includes four modules. In the initial data input module, the variables which are necessary to design of die are inputted by user and die material are selected from the database. In the analysis and redesign module, stress distrubution action on the designed die is analyzed by commercial FEM code NISA II. The designed die is modified to prevent failure in both states of stress free and pressurizing. The developed system provides powerful capabilities for die design of non-axisymmetric parts.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.193-193
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• 2016

In past decades beach erosion has been remarkably severe along coasts of different parts of the world, so that distinct types of coastal protective measures have been implemented; seawalls, wave-dissipating breakwaters, groins, artificial headlands or detached breakwaters have been constructed. In recent years, at Bongpeong beach, South Korea, an artificial headland was constructed to stop the beach erosion. The structure resulted in severe beach erosion of the adjoining places. In order to stop the consequences, another headland was constructed at some distance, but the construction of double headland did not prevent the erosion significantly. This paper focuses on the accurate design of the artificial double headland construction. The study presents the application of equilibrium shoreline empirical formula of parabolic type to estimate the equilibrium stages of the artificial double headland beaches and an analytic solution is presented in the present study. The research has solved the empirical formula of parabolic type to find the optimum result by considering the essential parameters that influence the erosion after the construction of double headland.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.248-254
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• 2008

Electric railway system consists of traction power system, rolling stock, track, and overhead line system. A railway substation transforms the electric power transmitted from a electric power company and supply it to the railway power system for the operation of traction system.. It is very important to prevent a possible accident and keep the security of electric power system. This paper proposes a reliability analysis of AC railway substation by using Fault Tree Analysis(FTA). Failure rates of each equipment of railway substation are used to evaluate the reliability of railway substation. The analyzed results can be used to improve the system reliability. FTA is performed by the commercialized program of Relex(Ver. 7.7).

• Child Health Nursing Research
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• v.27 no.4
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• pp.385-394
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• 2021

Purpose: This study investigated the relationships between mothers' knowledge and practice level of cough etiquette and their children's practice level of cough etiquette as perceived by their mothers. Methods: This study was a descriptive correlational study. The data were collected from 160 mothers with preschoolers attending daycare centers and kindergartens in Gwangju, South Korea using self-reported questionnaires. Results: The correct answer rate for cough etiquette knowledge in mothers was 86.0%, mothers' average practice score was 33.65±4.14, and their children's average practice score was 28.39±4.85 out of 48. The correlation between mothers' cough etiquette knowledge and practice level was not statistically significant. However, mothers' cough etiquette practice was positively correlated with children's cough etiquette level as perceived by mothers (r=.35, p<.001). Conclusion: The development of a systematic cough etiquette education program and measurements for both mothers and children according to their developmental stages is important to effectively prevent respiratory infections.

• Journal of muscle and joint health
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• v.28 no.1
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• pp.61-69
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• 2021

Purpose: This study investigated the mediating effect of perceived stress in the relationship between subjective health and depression in patients with coronary artery disease. Methods: This secondary analysis study used data from the 2016-2018 Korea National Health and Nutrition Examination Survey (KNHANES). Study participants included 466 patients over 20 years of age with coronary artery disease. Measures included questions about general characteristics, subjective health, perceived stress, and depression. The data were analyzed using complex sample design, descriptive analysis, Rao-Scott ��2 statistic, and multivariate logistic regression analysis with the SPSS 24.0 program. Results: Subjective health influenced depression, and perceived stress partially mediated it. Conclusion: To prevent depression in patients with coronary artery disease, it is necessary to develop effective stress management strategies.