• Korean Journal of Occupational Health Nursing
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• v.25 no.1
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• pp.29-40
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• 2016

Purpose: The purposes of this study were to examine the differences in need, necessity, performance, barriers, and effectiveness of workers' health promotion program and to determine the influencing factors in effectiveness of workers' health promotion program by business types. Methods: Subjects were participants of an education held by Korean association of occupational health nurses and a survey was self-reported. Survey items were developed by researchers through literature review. It included general characteristics of occupational health providers and worksites, need, necessity, performance, barriers and effectiveness of workers' health promotion (WHP) program. The total number of worksites was 168, manufacturing/construction was 76 (45.2%), other services were 52 (31.0%), and healthcare services were 40 (23.8%). We used ${\chi}^2test$, ANOVA test, correlation analysis, and multiple regression analysis. Results: There were differences in need, necessity and performance of WHP by business types. In healthcare services, WHP had statistically significant effectiveness to reduce turnover rates. And the influencing factors of WHP's effectiveness were workers' need in manufacturing/construction, health provider's career in other services, and perceived necessity in healthcare services. Conclusion: Based on this result, we propose differentiated strategies depending on the business types for effective workers' health promotion program.

• Korean Journal of Human Ecology
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• v.12 no.5
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• pp.669-685
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• 2003

This research examined the work performance by consumer counselors, evaluations of their counseling work, the level of their satisfaction, and willingness to sustain consumer counseling work among Consumer Agencies and also identified the variables influencing the evaluation scores on those. The results were summarized as follows. First, the evaluation scores on the work performance of consumer counseling were generally high and they turned out to be generally satisfied with their work. On the other hand, most counselors responded that they would continue their counseling work. Second, there were differences in evaluation scores about speed and specialized area of counseling among Consumer Agencies. Counselors who worked for the Korea Consumer Protection Board recorded high scores in those both criteria. There were differences in the willingness of counselors to continue their counseling work among Consumer Agencies, too. Third, the evaluation scores in six areas of counseling tasks were high when the degree of satisfaction of counselors were high or when agencies treated the counseling important. Fourth, when counselors earned more salaries and owned the experience of in-firm training and when the Consumer Agencies highly valued counseling as consumer tasks, the degree of satisfaction among counselors increased. Finally, when counselors were old, major in consumer science, and held regular work-schedule, they exhibited high degree of satisfaction in their counseling work and they showed greater willingness to sustain their counseling work.

• Journal of the Society of Naval Architects of Korea
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• v.50 no.2
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• pp.88-94
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• 2013

The primary objective of the current work is to obviously analyze regarding effects of trim conditions of a ship on resistance performance using model test and CFD. Model tests at a towing tank are conducted to investigate resistance for trim conditions at the given same displacement. Measured resistance shows small but distinct differences according to trim conditions. However, these differences are difficult to be clarified by measured physical quantities and wave pattern analysis from model tests. CFD is employed for the assessment of resistance performance according to trim conditions. The flow computation is conducted considering free surface and dynamic trim using a commercial CFD code (STAR-CCM+). The initiative of the present work is to systematically demonstrate pressure resistance acting on each region of divided finite zones of ship surface along the length and draught direction of surface when pressure distribution on the ship is interpreted. Also, a standard to assess the pressure resistance applied on the divided regions of a ship is established.

• Journal of Power System Engineering
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• v.18 no.1
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• pp.51-56
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• 2014

In this paper, the performance of the $CO_2-C_2H_6-N_2$ cascade liquefaction cycle with respect to temperature differences in the LNG heat exchangers is analyzed theoretically using HYSYS software and then compared the COP(coefficient of performance) of the cascade liquefaction cycles using $C_3H_8-C_2H_4-C_1H_4$ and $CO_2-N_2O-N_2$. In comparison of COP of three cycles, the cascade liquefaction cycles using $C_3H_8-C_2H_4-C_1H_4$ showed the highest COP. And the liquefaction cycle using $CO_2-C_2H_6-N_2$ and $CO_2-N_2O-N_2$ presented the second and third highest COP, respectively. In case of COP, the $C_3H_8-C_2H_4-C_1H_4$ cascade liquefaction cycle yields better COP. But, in terms of the environment and maintain, it is confirmed that the cascade liquefaction cycle using $CO_2-C_2H_6-N_2$ provides favorable characteristics.

• Safety and Health at Work
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• v.5 no.1
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• pp.23-26
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• 2014

Background: The purpose of this study was to compare the concentration of total airborne bacteria (TAB) in biosafety cabinets (BSCs) at universities and hospital microbial laboratories to assess the performance of BSCs. Methods: TAB was determined by using the single-stage Anderson sampler (BioStage Viable Cascade Impactor). The samples were obtained three times (with the BSC turned off and the shield open; with the BSC turned off and the shield closed; and with the BSC tuned on and operating) from the areas in front of 11 BSCs. Results: TAB concentrations of accredited and nonaccredited BSCs were determined. No significant differences were observed in the TAB concentrations of the accredited BSCs and the nonaccredited BSCs for the areas outside the BSCs in the laboratories (p > 0.05). TAB concentrations for the BSCs sampled with the shield open and the instrument turned off showed differences based on the sampling site outside the BSC in each laboratory. Conclusion: These results imply that TAB concentration is not altered by the performance of the BSCs or TAB itself and/or concentration of TAB outside the BSC is not a good index of BSC performance.

• The Korean Journal of Emergency Medical Services
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• v.18 no.2
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• pp.21-33
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• 2014

Purpose: A descriptive study design was used to investigate infection management awareness and infection management performance for clothing management in 119 emergency medical technicians (EMTs). Method: 188 paramedics and basic EMTs completed questionnaires between March 1 and April 30, 2013 in Jeollabuk-do. Results: Participants' average score for infection control awareness was 2.69 and that for performance was 1.58, with the differences being statistically significant (t = 931.455, p = .003). Participants' general characteristics resulted in differences in infection management performance. Women (1.63) have scored higher than men (1.28), and the difference was statistically significant (t = 11.174, p = .001). Participants who had clinical experience (1.63) had higher scores than participants who did have clinical experience before (1.53) and, again, the difference was significant (t = 7.167, p = .009). Conclusion: Education program for infection management is need to be developed for more effective infection management.

• The Journal of Korean Academic Society of Nursing Education
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• v.23 no.1
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• pp.66-75
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• 2017

Purpose: The aim of this study was to evaluate differences of pre-post simulation training in problem solving ability, performance confidence, and critical thinking skill according to degree of nursing students' self-leadership. Methods: This study was a descriptive survey using a self-report questionnaire. One hundred eighty nursing students participated in this study which programed a simulation scenario of pre-post operative patients' care. Descriptive statistics, paired t-test, ANCOVA with IBM SPSS 21.0 program were used for data analysis. Results: After the simulation training, both the above-average subjects and below-average subjects in self-leadership significantly improved their problem-solving ability, performance confidence, and critical thinking skill. compared with their previous level. The subjects who rated above-average in self-leadership, improved their degree of problem-solving ability, performance confidence, and critical thinking skill significantly more than those who were below-average in self-leadership. Conclusion: Self-leadership of nursing students is an important element in effective simulation training.

• Journal of Korean Society for Quality Management
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• v.39 no.2
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• pp.179-187
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• 2011

Small- and medium-sized companies obtain ISO 9000 quality management systems as a way of adapting to the changes of business environment and improving their business performance. Certificates of ISO 9000 quality management systems have been granted to companies by either domestic or foreign certification agencies with different requirements and standards. This study empirically examined whether there are differences in business performance among small- and medium-sized companies that have obtained ISO 9000 quality management system from different types (domestic or foreign) of certification agencies. This study found that there are statistically significant differences in both qualitative and quantitative business performance among them. The findings of this study imply that companies considering ISO 9000 quality management systems be prudent in choosing the type of certification agency to maximize the expected benefits of ISO 9000 quality management systems. This study also provides the government agency regulating ISO 9000 quality management certification system with some valuable information that brings up the need for establishing and managing a more effective quality management certification system.

• Korean Journal of Agricultural Science
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• v.45 no.4
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• pp.645-653
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• 2018

Twenty-five sows and 265 piglets (Landrace ${\times}$ Yorkshire) were used to evaluate the effects of dietary energy level on the pre-weaning and post-weaning performance of piglets and first parity sows. Sows with an average initial B.W. of $217.54{\pm}25.47kg$ were randomly assigned to 2 treatments. The treatments consisted of a T1 diet containing 3,100 kcal, and the T2 diet contained 3400 kcal of metabolizable energy (ME)/kg, respectively. Data were analyzed using Duncan statements to test the effect of the dietary energy levels on growth performance in lactating sows and piglets. In this study, Dietary T2 sows had a greater number of weaned piglets per litter (p < 0.05). Dietary T2 had a higher (p < 0.05) body weight than that of T1 in the weanlings, meanwhile it had a higher total average daily gain (p < 0.05) than that of T1. Dietary T1 had a higher average feed intake than that of T2 in gestation and lactation. There were no significant differences on the litter size or litter birth weight. No differences (p > 0.05) were noted in the survival of the piglets as well as in the backfat thickness and body weight loss in sows. In conclusion, these results show that high-energy diets had no effect on the body weight and backfat thickness of sows during gestation and lactation but influenced the body weight and average daily gain of weanling pigs during the lactation period.

• Journal of Sport and Applied Science
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• v.7 no.3
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• pp.27-35
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• 2023

Purpose: Providing tutoring services may be one of the most effective practices for improving academic performance and student retention. However, there is little information on the difference between mandatory tutoring (MT) and voluntary tutoring (VT) on the impact of student academic performance. This investigation compared the effectiveness of VT and MT services in the three upper level undergraduate classes. Research design, data, and methodology: Baseline data were collected in a spring semester where no tutoring of any kind was offered (control group (CG), n=78). The MT (n=104) was required in the following fall semester, and in the next spring semester only VT (n=97) was offered. Descriptive statistics and One-way ANOVA using IBM SPSS v23 (Chicago, IL) were used to analyze the final grades of the courses to identify differences in final grades between semesters. Results: Although final grades averaged from three classes were highest in the MT group, there were no statistical differences between the MT and VT groups, F(2, 292) = 1.150, p =.318. Conclusion: This study indicates there was no significant difference in academic performance between the two tutoring types, but that both tutoring services can be effective.