• Journal of Korean Institute of Industrial Engineers
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• v.21 no.3
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• pp.409-428
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• 1995

Job shop scheduling with m different machines and n different jobs is a NP-hard problem of combinatorial optimization. The purpose of the paper is to develop the heuristic method using tabu search for job shop scheduling to minimize makespan or mean flowtime. To apply tabu search to job shop scheduling problem, in this paper we propose the several move methods that employ insert moves in order to generate the neighbor solutions, and present the efficient rescheduling procedure that yields active schedule for a changed operation sequence by a move of operations. We also discuss the tabu search techniques of diversifying the search of solution space as well as the simple tabu search. By experiments, we find the appropriate tabu list size and tabu attributes, and analyze the proposed tabu search techniques with respect to the quality of solutions and the efforts of computation. The experimental results show that the proposed tabu search techniques using long-term memory function have the ability to search a good solution, and are more efficient in the mean flowtime minimization problem than in the makespan minimization.

• Journal of the Korea Safety Management & Science
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• v.18 no.2
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• pp.57-64
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• 2016

While many of company try to increase customer satisfaction by empowerment, there are need to figure out which can increase employee's problem solving ability in company side. It is related to Innovative Activity that can create new idea to fix job process. In this study, researcher institute a factor that 'Manager's Job Competency' which can increase member's Innovative Activity. And try to figuring out it has what kind of effect on innovative activity and management performance through empirical method. For the empirical study, researcher get 119 samples from service industry, and result of study show us manager's job competency has positive effect on member's innovative activity and management performance. Base on this result, researcher provide a manageric implication and limitaions of study.

• Journal of the Korea Safety Management & Science
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• v.13 no.4
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• pp.53-60
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• 2011

Job stress weakens physical ability causing the diseases related to working condition, decreases a production level, and increases mistakes and accidents. This study examined the relationship between job stress and human error, and focused on the moderating effect of age and maintenance type on the relationship between job stress and human error. The study used a quantitative design based on the 450 questionnaires of maintenance personnel in the Air force. The results of multiple regression analysis showed that physiological and psychological stress responses have positively related with human error. In moderating effect test, age appeared to impact on the relationship between physiological/behavioral stress and human error.

• Journal of Agricultural Extension & Community Development
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• v.3 no.1
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• pp.83-93
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• 1996

This study examines the agricultural extension agents` satisfaction with their job and its related variables - personal characteristics, achievement motivation, and needs level. Based on die Job Descriptive Index, Brayfield-Rothe Index, and Porter Instrument, the survey was carried out on 127 agents. Results show 1) a significant difference in personal characteristics is found in position, farmer contact frequency, and service region applied for, but not in age, gender, scholastic ability, career, task, and another department contact frequency, 2) the achievement motivational level is related to job satisfaction, and 3) the needs level is not related to job satisfaction.

• Journal of the Korea Safety Management & Science
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• v.24 no.1
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• pp.39-48
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• 2022

Considering that previous works on safety behavior relatively have not paid adequate attention to the influence of various leadership styles on safety behavior. The current paper investigates the impact of authentic leadership on safety behavior and its intermediating mechanisms. In specific, this paper delves into the mediating effect of job stress, as well as the moderating effect of perspective taking ability of employees in the association between authentic leadership and job stress. The results demonstrated that that authentic leadership has a negative (-) influence on job stress, which has a negative (-) influence on safety behavior. Moreover, job stress mediated the association between authentic leadership and safety behavior. Furthermore, perspective taking moderated the authentic leadership-safety behavior link.

• Journal of Fisheries and Marine Sciences Education
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• v.25 no.2
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• pp.349-363
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• 2013

Using data from 286 employees who were working in medium and small company in Busan, the study analyzed the influence of educational training program traits perceived by employee on organizational effectiveness and job performance. The main results were as the followings. First, for organizational effectiveness, job relation and objective setting among educational training program traits had statistically significant influence on job satisfaction and involvement in organization after controlling the employee's characteristics. Second, for job performance, after controling the employee's characteristics, job relation, educational method, educational training environment, and objective setting had statistically significant influence on active participation, the improvement of task performance ability and confidence, or professional knowledge improvement. Additionally, among the employee's characteristics, the number of educational training participation was statistically significant predictor for job performance. Based on the main results, some suggestions and the limitations of the study were discussed.

• Journal of Korean society of Dental Hygiene
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• v.22 no.3
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• pp.181-188
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• 2022

Objectives: This study aimed to estimate the influences of leader's political skills (LPS) on job satisfaction and organizational commitment in dental hygienists. Methods: A self-administrated questionnaire was conducted form April 1 to May 31 2020 by 209 dental hygienists in Seoul, Busan and South Gyeongsang. LPS, job satisfaction, organizational commitment were evaluated on the LPS scale, job descriptive index (JDI) and organizational commitment scale, respectively, each on five-point scale. Data were subjected to descriptive analysis, t-test, one-way ANOVA, pearson correlation and multiple linear regression analysis. Results: The overall LPS, job satisfaction and organizational commitment level of subjects were 3.53±0.63, 3.18±0.51 and 3.27±0.63. The influential factors for LPS, job satisfaction and organizational commitment were Networking ability (subcategory of LPS). Conclusions: Leaders should use the knowledge and activities newly introduced from various networks to fit the dental hospital so that members can display their more professional abilities to increase job satisfaction and organizational commitment.

• The Journal of the Korea Contents Association
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• v.15 no.11
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• pp.238-249
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• 2015

This study was carried out to analyze the mediating effect of self-soothing ability in the relationship of job environment stress and psychological burnout of youth counselors. To achieve the study purpose, a survey was executed on 150 counselors who gathered for a academic meeting held at Korea National University of Education with the theme of youth counseling on May 5, 2015. The participants included nation-wide counselors working at public agencies, schools, university and colleges, and private counseling offices. Analysis was executed for 113 questionnaires found valid with SPSS v.20, and study findings are as follows: first, career and working conditions youth counselors showed no difference in job environment stress between groups; second, 'lack of challenge' and 'role ambiguity' were found to affect psychological burnout; third, 'resilience' and 'self-disclosure' were found to affect psychological burnout; fourth, self-soothing ability was shown to have a mediating effect in the relationship between job environment stress and psychological burnout of youth counselors. This result will contribute to helping develop programs to cope with stress faced by both experienced youth counselors and counselors in general.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.37 no.2
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• pp.35-42
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• 2014

The purpose of this study is to analyze job stress factors of hospital workers, which has an effect on their turnover intention. For identifying the influences on turnover intention, types of hospitals (university hospital, general hospital, private hospital) and types of workers(office workers, technical workers, and nursing staffs) were categorized. We went to the hospitals and carried out the survey under the cooperation with the concerned hospitals. The period of survey was from 23. Sep. 2013 to 30. Oct. 2013, and 293 worker participated in the survey. On the basis of the previous study, the measurement of job stress factors and turnover intention was set up as the survey method, and its reliability and validity were measured. The stress factors were subdivided into seven factors; occupational climate, organizational system, autonomy job control, uncertainty of getting a new job, job ability to perform, job demand, job ambiance. The value of job stress factors by the measuring instrument, Cronbach's Alpha, was 0.805 and the value of the subordination variable of turnover intention was 0.881. IBM SPSS Statistics 21 was used as the statistic analysis tool and the descriptive statistics about job stress factors. As a result, the turnover intention were analyzed depending on the types of hospitals, job groups, working years, and gender. Result shows that the job stress factors are differed according to the types of hospitals, and these job stress factors have influence on turnover intention. Therefore, it could be considered that, if the hospital managers find out the major job stress factors of their employees and resolve them in advance, the job stress of the hospital workers and their turnover intention can be reduced.

• Management & Information Systems Review
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• v.17
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• pp.161-189
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• 2005

As the importance of intellectual assets has been brought into relief, this study aims at positively verifying where the intellectual workers' overall level of their knowledge conversion preference and their job character has reached, and how much the knowledge conversion preference, the job character and the fitness of both factors affects the job effectiveness respectively. For this purpose 3 types of research hypotheses were set up and the result of the verification of the hypotheses is summarized as follows: First, the verification of the relation between the knowledge conversion preference and the job effectiveness revealed that the workers who have the higher synthetic ability in knowledge conversion preference show the higher job satisfaction and job product. Secondly, the verification of the relation between the MPS representing the job character by measured index and the job satisfaction revealed that the absolute value of relative coefficient between the 4 factors excluding the public welfare factor and the MPS is 4, interpreted as medium correlation. Thirdly, the analysis on the degree of relation between the job product measured by the quality of job result and the input effort and the MPS showed that the absolute value of person relative coefficient is 5, interpreted not only as medium correlation but also very meaningful. Accordingly, the main purpose of this study was to give a guideline which can be utilized as an indicator for educating, training and placing the workers. As results, the main effect that the variable of knowledge conversion preference and job character chosen as the independent variable influences on the dependent variable of job satisfaction and job product is very meaningful except the public welfare factor.