• 한국병원경영학회지
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• 제22권1호
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• pp.21-39
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• 2017

Purpose : This study was intended to investigate the structural relationship among empowerment, self-efficacy, job motivation, autonomy, critical thinking, job-satisfaction, burnout, and self-achievement. In addition, we tested the moderating effect of the career period on the influence of empowerment. Methodology : The structural equation model was used to test the causal relationship between factors, and t-test, ANOVA, descriptive statistics are applied to analyze the research data. Findings : The result of this study shows that the structural model that is the empowerment encourages the self-efficacy, job motivation, autonomy, and critical thinking, also these factors affect the self-achievement through both the job-satisfaction and burnout is acceptable according to the goodness of fitness indices. In addition, we show that the career period moderates the influence of empowerment on the self-efficacy, job-motivation, and autonomy, but not critical thinking. Usually, the shorter the career period is the higher the influence of empowerment is. This moderating effect means that to give proper empowerment to lower position nurses encourage them, and prevent from burnout. Therefore, they feel job-satisfaction and finally self-achievement. Practical Implications : The empowerment helps the nurse to activate self-efficacy, job motivation, autonomy, critical thinking. Hence, these factors decrease burn-out but increase job satisfaction. Finally a sense of self-perfection increase.

• Nuclear Engineering and Technology
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• 제53권11호
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• pp.3665-3674
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• 2021

One of the important parts of the in-core fuel management is loading pattern optimization (LPO). The loading pattern optimization as a reasonable design of the in-core fuel management can improve both economic and safe aspects of the nuclear reactor. This work proposes the hybrid of fuzzy logic controller with harmony search algorithm (HS) for loading pattern optimization in a pressurized water reactor. The music improvisation process to find a pleasing harmony is inspiring the harmony search algorithm. In this work, the adjustment of the harmony search algorithm parameters such as the bandwidth and the pitch adjustment rate are increasing performance of the proposed algorithm which is done through a fuzzy logic controller. Hence, membership functions and fuzzy rules are designed to improve the performance of the HS algorithm and achieve optimal results. The objective of the method is finding an optimum core arrangement according to safety and economic aspects such as reduction of power peaking factor (PPF) and increase of effective multiplication factor (Keff). The proposed approach effectiveness has been tried in two cases, Michalewicz's bivariate function problem and NEACRP LWR core. The results show that by using fuzzy harmony search algorithm the value of the fitness function is improved by 15.35%. Finally, with regard to the new solutions proposed in this research it could be used as a trustworthy method for other optimization issues of engineering field.

• 한국콘텐츠학회논문지
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• 제12권12호
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• pp.212-222
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• 2012

사회복지전공생은 사회복지현장실습을 통해 전문적 역량과 실무적 지식을 습득할 뿐만 아니라 사회복지사로서의 적성과 자질을 검토하게 된다. 본 연구는 사회복지현장실습 슈퍼비전 특성이 전공생의 진로발달에 미치는 영향을 살펴보고자 사회복지현장실습을 마친 대학생 212명을 대상으로 구조화된 설문조사를 통해 자료를 분석하였다. 연구결과 슈퍼바이저의 상당수는 여성이고, 슈퍼비전은 정기적으로 집단 혹은 개별과 집단이 혼합된 형태로 제공하고 있었다. 학생들이 평가한 슈퍼바이저와의 관계는 3.20/4, 슈퍼비전 만족도는 3.03/4 정도이지만, 진로정체감은 5.80/12으로 낮은 수준으로 나타났다. 위계적 다중회귀분석 결과 사회복지전공생의 진로정체감에는 슈퍼바이저가 부장급으로 높을수록, 실습생이 원할 때 언제라도, 방법적으로 집단 슈퍼비전 보다는 개별적으로, 그리고 슈퍼바이저와의 관계가 좋을수록, 슈퍼비전에 대한 만족도가 높을수록 진로정체감에 긍정적으로 영향을 미치는 것으로 나타났다. 본 연구는 이러한 결과를 바탕으로 진로정체감을 높이기 위한 정책적 및 실천적 함의를 논의하였다.

• 한국비블리아학회지
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• 제3권1호
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• pp.13-38
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• 1978

When the Professional Librarians can be satisfied with the needs in perfoming their jobs, they feel the job satisfaction. In other words, the job desire consists of the directly related factors such as fitness, dexterity and the value of the work and those opinions regarding the environments, pays, problems of the promotion, promise of the job. This thesis is a study of these factors that affect the Professional Librarans' job desire of the university libraries in Korea. The purpose of the study is to analyze the perceived degree of Professional Librarians' job desire. To meet this purpose, this study is based upon A.H. Maslow's motivation theory "Hierarchy of Needs" and analyzed by the method of "Cafeteria Question" the answers gathered from 226 Professional Librarians who are work ing in University Libraries. The analyzed results show that generally the job desires of Professional Librarians in university libraries are low and stands in a situation that doesn't meet even the low dimensional needs of Maslow's theory. So the top library managers should establish the long-term plan to promote the job desire and the factors which cause the frustration of the Professional Librarians should be removed as soon as possible.

• 한국안전학회지
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• 제25권4호
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• pp.76-83
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• 2010

As one of crucial industries, the service industry occupies a large part of economy in Korea poor in natural resources. However, prevention of industrial disasters has been promoted mainly in manufacturing and construction industries where the frequencies of such disasters and victims are high. Research on the evaluation of workplace safety climate has been conducted centering on traditional industries like manufacturing and construction, and few studies have been made for service businesses. The objective of this study was to evaluate workplace safety climate perceived in the field by workers engaged in service businesses and to contribute to the establishment of industrial safety and health policies in consideration of the characteristics of each business category. Using research variables safety knowledge, safety attitude, safety motivation, safety participation, safety compliance, and safeness of work environment, we evaluated comprehensive workplace safety climate based on the causal relations among the variables. In the results of analyzing data from a questionnaire survey of service business employees, statistically significant effect relations among the variables were identified, and the fitness of the model with approved reliability and validity was verified.

• 간호행정학회지
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• 제11권4호
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• pp.371-384
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• 2005

Purpose: The aim of this study was to analysis path model of the research variables. Methods: The subjects of this study were 647 nurses who were working in the 8 general hospitals located in Seoul and Incheon area. The data were collected by self-reporting questionnaires. The data were analyzed using descriptive statistics and path analysis. Results: In the modified path model, overall fitness indexes were $X^2$= 223.27, goodness of fit index=0.90, root mean square residual=0.039, root mean square error of approximation=0.12, non-normed fit index=0.96, and normed fit index=0.90. From the model, among research variables that influence organizational effectiveness motivator, job satisfaction and organizational identification affected directly work performance. In internal marketing factors, paid-leave, communication and reward affected directly motivator. Motivator and hygiene factors affected directly job satisfaction, organizational commitment and organizational identification. Conclusion: With these findings, paid-leave, communication, reward, motivator, job satisfaction and organizational identification were direct or indirect predictors of the work performance. Therefore nursing managers ought to develop internal marketing strategies and motivation enhancing system for nurses based on this path model in order to improve the nursing organizational effectiveness.

• 상하수도학회지
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• 제25권2호
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• pp.185-192
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• 2011

Pearson's correlation was used to determine relations between infiltration and affecting factors using flow monitoring data measured in 24 areas with different characteristics. Factors showed relatively high correlations than others were indexed to determine infiltration rates of the study area. Among 8 factors(service area, sewer length, sewer diameter, multiplier of sewer length and diameter, number of manholes, population, number of properties, number of households) tested, the multiplier of sewer length and diameter, the number of population and the number of household in each service area indicated higher correlation coefficient(>0.8) than others. The goodness of fitness of linear regressions between infiltration and the factors followed the order: sewer length and diameter(0.68)> population(0.65)> number of household(0.60). Infiltration rates calculated by the multiplier of sewer length and diameter, the number of population and the number of household in each service area were 0.046~1.0396 $m^{3}/d{\cdot}mm-km$, 0.0917~1.7355 $m^{3}/capita{\cdot}d$, 0.196~4.529 $m^{3}/household {\cdot}d$ respectively. After sewerage rehabilitation work of the area, the infiltration rates calculated by above factors with high correlations are expected to be used for comparing effectiveness of the work once they are estimated under the same flow measuring conditions.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.139-144
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• 2022

Technological advancements taken the health care industry by a storm by embedding sensors in human body to measure their vitals. These smart solutions provide better and flexible health care to patients, and also easy monitoring for the medical practitioners. However, these innovative solutions provide their own set of challenges. The major challenge faced by embedding sensors in body is the issue of lack of infinite energy source. This work presents a meta-heuristic based routing model using modified PSO, and adopts an energy harvesting scheme to improve the network lifetime. The routing process is governed by modifying the fitness function of PSO to include charge, temperature and other vital factors required for node selection. A reactive routing model is adopted to ensure reliable packet delivery. Experiments have been performed and comparisons indicate that the proposed Energy Harvesting and Modified PSO (EHMP) model demonstrates low overhead, higher network lifetime and better network stability.

• The Plant Pathology Journal
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• 제38권5호
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• pp.482-489
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• 2022

Fire blight caused by Erwinia amylovora (Ea) is a devastating disease in apple and pear trees. Oxolinic acid (OA), a quinolone family antibiotic that inhibits DNA gyrase, has been employed to control fire blight in South Korea since 2015. The continuous use of this bactericide has resulted in the emergence of OA-resistant strains in bacterial pathogens in other countries. To investigate the occurrence of OA-resistant Ea strains in South Korea, we collected a total of 516 Ea isolates from diseased apple and pear trees in 2020-2021 and assessed their sensitivities to OA. We found that all isolates were susceptible to OA. To explore the possibility of emerging OA-resistant Ea by continuous application of OA, we exposed Ea stains to a range of OA concentrations and constructed OA-resistant mutant strains. Resistance was associated with mutations in the GyrA at codons 81 and 83, which result in glycine to cysteine and serine to arginine amino acid substitutions, respectively. The in vitro growth of the mutants in nutrient media and their virulence in immature apple fruits were lower than those of wild-type. Our results suggest that OA-resistance decreases the fitness of Ea. Future work should clarify the mechanisms by which OA-resistance decreases virulence of this plant pathogen. Continuous monitoring of OA-resistance in Ea is required to maintain the efficacy of this potent bactericide.

• 간호행정학회지
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• 제12권1호
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• pp.23-31
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• 2006

Purpose: The purpose of this study was to test the empowerment structural model based on Kanter's work empowerment theory. Method: A predictive, nonexperimental design was used in a sample of 279 nurses from 3 university affiliated hospitals. Data were collected with self-administered questionnaires and analyzed using mean, standard deviation, pearson correlation coefficient and path analysis. Results: The results showed that the overall fitness of the hypothethical model to the data was good(chi-square=.7751, df=4, p=.942, GFI=.999, AGFI=.996, RMSEA=.000). Both formal power and informal power directly influenced on nurses' perceived empowerment level and empowerment directly influenced on nurses' organizational commitment and indirectly influenced on nurses' intent to stay. Conclusion: The results imply that hospital and nurse managers should provide the empowering working condition for nurses to be stayed in hospitals.