• 한국산업보건학회지
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• 제23권1호
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• pp.27-34
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• 2013

Objectives: The purpose of this study is to calculate the worker-DNEL (Derived No Effect Level) values using the REACH guidance and compare the calculated DNELs with existing Korea occupational exposure limits (KOELs) for evaluation of the applicability of the worker-DNELs as provisional occupational exposure limits for chemicals that are not established KOELs in the workplace. Methods: The worker-DNELs for 46 chemicals among 113 hazardous substance requiring management were calculated using the REACH guidance, and a paired t-test was performed to see if there is any statistical difference between two lists (worker-DNELs vs KOELs). The ratios of KOELs over worker-DNELs were also calculated to compare the overall levels of two lists using the geometric means method. Results: The calculated worker-DNELs for 46 chemicals ranged from 0.001 to $329mg/m^3$ (GM= 6.9, GSD = 10.8), and appeared to be a significant difference between the worker-DNELs and the KOELs (p < 0.01). In addition, the ratios of KOELs over worker-DNELs ranged from 0.3 to 394 times (GM = 10.2, GSD = 3.9), indicating that the worker-DNELs were, on average, 27 times lower than the KOELs. Conclusions: Therefore, the study results show that the calculated worker-DNELs can be applied and used as provisional occupational exposure limits in the workplace in order to reduce worker exposures to chemicals and health risks, and manage potential worker exposures based on the precautionary principle through comprehensive chemical risk assessment.

• Journal of Biosystems Engineering
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• 제38권1호
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• pp.33-40
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• 2013

Purpose: The goal of this study was to build an accurate digital factory that evaluates the performance of a factory using computer simulation. To achieve this goal, we evaluated the effect of worker-related variables on production in a simulation model using comparative analysis of two cases. Methods: The overall work process and worker-related variables were determined and used to build a simulation model. Siemens PLM Software's Plant Simulation was used to build a simulation model. Also, two simulation models were built, where the only difference was the use of the worker-related variable, and the total daily production analyzed and compared in terms of the individual process. Additionally, worker efficiency was evaluated based on worker analysis. Results: When the daily production of the two models were compared, a 0.16% error rate was observed for the model where the worker-related variables were applied and error rate was approximately 5.35% for the model where the worker-related variables were not applied. In addition, the production in the individual processes showed lower error rate in the model that included the worker-related variables than the model where the worker-related variables were not used. Also, among the total of 22 workers, only three workers satisfied the IFRS (International Financial Reporting Standards) suggested worker capacity rate (90%). Conclusions: In the daily total production and individual process production, the model that included the worker-related variables produced results that were closer to the real production values. This result indicates the importance of worker elements as input variables, in regards to building accurate simulation models. Also, as suggested in this study, the model that included the worker-related variables can be utilized to analyze in more detail actual production. The results from this study are expected to be utilized to improve the work process and worker efficiency.

• 대한영양사협회학술지
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• 제3권1호
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• pp.63-73
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• 1997

This study was conducted to evaluate the industry foodservice management practices and to suggest guidelines for the effective foodservice management. The survey for the analysis was conducted through the questionnaires to dietitians. They were divided into two groups : the site color worker and the blue color worker. The questionnaires were received for a response rate of 73.2%. Statistical data analysis was completed using the SAS programs for descriptive analysis, $x^2$ test, T-test, F-test, and Fisher's LSD. The results of the study can be summarized as follows : 1) The level of education of dietitians and food cost in the employee feeding operations for the blue color worker was lower than the employee feeding operations for the white color worker. 2) The labor productivity indices were not significantly different according to types of workers. But in the employee feeding operations for the blue color worker, full-time foodservice employees worked more than 10.7 hour per week than their counterpart. This indicates the full-time foodservice employees in the employee feeding operations for the blue color worker performed more loaded work compared to the employee feeding operations for the white color worker. 3) Equipped rate of facilities in the employee feeding operations for the blue color worker was low especially in the food preparation and cooking processes.

• 한국환경보건학회지
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• 제37권5호
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• pp.342-347
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• 2011

Healthy worker effect (HWE) refers to the consistent tendency for actively employed individuals to have a more favorable mortality experience than the population at large. Although HWE has been well known since the 1970s, only a few studies in occupational epidemiology have attempted to fully define and evaluate HWE. HWE can be separated into effects on the initial hiring into the workforce (healthy worker hire effect) and those on continuing employment (healthy worker survival effect). In this review, we summarize the methods for minimizingor adjusting for the healthy worker effect available in occupational epidemiology. It is noteworthy that healthy worker survival effect appears complicated, considering that employment status plays simultaneous roles as a counfounding variable and intermediate variable, whereas healthy worker hire effect may be adjusted by incorporating health status at baseline into the statistical model. In addition, two retrospective cohort studies for workers in the semiconductor industry and Vietnam veterans in Korea, respectively, were introduced, and their results were explained in terms of healthy worker effect.

• 한국사회복지학
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• 제58권1호
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• pp.209-235
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• 2006

이 연구는 우리나라 사회복지사의 수행 직무 특성을 고찰하고 사회복지사 1급과 2,3급의 직무유형을 제시하기 위하여 911명의 사회복지사를 대상으로 직무의 수행 빈도와 직무수준을 조사하였고, 이 두 가지 요소를 함께 고려하여 1급과 2,3급의 직무를 유형화하였다. 사회복지사의 수행 직무 특성으로는 시설관리, 직접 서비스 제공, 접수, 문서관리 등 수준이 낮게 인식된 직무의 수행 빈도가 높은 반면, 인력관리, 기획 및 재정관리 등의 행정적 직무와 업무형성과 유지, 평가 및 종결 등 수준이 높게 인식된 직무의 수행 빈도는 낮게 나타났다. 직무유형에 대안 분석 결과, 85개의 요소업무 중 유형 I의 업무(1급 사회복지사의 수행업무)는 53개였으며, 유형IV의 업무(2,3급 사회복지사의 수행업무)는 11개로 분류되었다. 또한 1급이나 2,3급이 실천현장이나 분야의 특성에 따라 탄력적으로 수행할 수 있는 업무유형 II, III의 업무는 31개가 제시되었다. 이 연구는 사회복지사 급수별 직무를 제시함으로써, 직무 할당의 근거로 활용하고 그에 따른 전문적 서비스를 제공하기 위함인데, 직무 할당이 급수별로 보다 명확하게 이루어지기 위채서는 현행 사회복지사 자격 제도가 함께 정비되어져야 한다. 이 연구가 자격제도 정비의 근거로 활용되고, 책임 있는 사회복지서비스의 제공근거로 활용되길 바란다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1998년도 춘계학술발표회논문집(2)
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• pp.577-582
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• 1998

In nuclear power plant, it has been the important object to reduce the occupational radiation exposure (ORE). Recently, the optimization concept of management science has been studied to reduce the ORE in nuclear power plant. In optimization of the worker allocation, the collective dose, working time, individual dose, an total number of worker must be considered and their priority orders must be thought because the main constraint is necessary for determining the constraints variable of the radiological worker allocation problem. The ultimate object of this study s to look into the change of the optimal allocation of the radiological worker as priority order changes. In this study, the priority order is the characteristic of goal programming that is a kind of multi-objective linear programming. From a result of study using goal programming, the total number of worker and collective dose of worker have changed as the priority order has changed and the collective dose limit have played an important role in reducing the ORE.

• 대한가정학회지
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• 제39권3호
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• pp.47-66
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• 2001

The purpose of this study is to find the difference of household/work characteristics, family life satisfaction, and work satisfaction between home-based workers and out-of-home workers. The data of this study was collected from 230 married womens(home-based worker : 103 cases out-of-home worker : 127 cases) living in seoul. The major findings of the study are as follows. 1) Home-based worker's consumption expenditure structure, wive's housework time, schedule flexibility and degree of interruption, work loads were significantly higher than out-of-home workers. 2) Home-based worker's average monthly wage of her own and work time were significantly lower than out-of-home jokers. 3) Home-based worker's child care satisfaction and time use satisfaction were significantly higher than out-of-home workers. Out-of-home worker's self-fulfillment satisfaction, satisfaction of relation with supervisor, job stability satisfaction, work time satisfaction was significantly higher than home-based workers.

• 한국사회복지학
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• 제58권2호
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• pp.355-375
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• 2006

이 연구는 사회복지사의 직무특성이 직무만족에 미치는 영향을 고찰함으로써 사회복지사의 직무 설계 시 고려해야 할 요소를 밝혀내기 위해 시행되었다. 설문은 사회복지관의 사회복지사와 의료사회복지사 240명이 응답한 결과를 토대로 분석하였다. 연구결과 사회복지기관 사회복지사의 직무만족에는 자율성, 피드백, 정체성, 전문성, 필요성의 직무특성과 자기효능감이 영향을 미쳤으며, 의료사회복지사의 직무만족에는 필요성과 자기효능감, 성별, 직위만이 영향을 미쳐, 직무특성요인이 부분적으로 결과변수에 영향을 미치는 것으로 나타났다. 특히 핵크맨과 올드햄(1975)의 핵심직무특성보다는 정체성, 전문성, 필요성의 직무특성 영향력이 보다 강한 것으로 나타나, 사회복지사의 지식과 기술, 기법 외에 관점이나 정체성, 필요성 등을 강조하는 접근이 필요한 것으로 나타났다. 또한 자기효능감이 직무만족에 미치는 영향력이 다른 변수보다 강하였고, 직무 특성이 직무만족에 영향을 미침에 있어 부분적인 매개역할을 하고 있는 것으로 나타나, 사회복지사의 자기효능감을 증진시키기 위한 교육과 지지적인 환경, 수퍼비전 등이 필요한 것으로 나타났다. 이 연구는 핵크맨과 올드햄(1975)의 핵심직무특성 모형을 사회복지조직에 적용한 연구로, 직무설계 시 사회복지실천현장의 특성별로 달리 나타나는 직무특성 요인을 감안한 직무의 설계와 재설계를 통하여 사회복지사 효율성을 도모해야 할 필요성을 제기하고 있다.

• 한국컴퓨터정보학회논문지
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• 제23권7호
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• pp.113-120
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• 2018

The purpose of this study is to derive implications for effective management of the public social worker by investigating the relationship between social support, job attitude and self-esteem of the public social worker. In order to accomplish this research purpose, social support of the public social worker as independent variables, job attitude as a dependent variable, and self-esteem as a parameter were analyzed and the relationship between these variables was analyzed. As a result, emotional, evaluative, material, and informational support, which constitute the social support of the public social worker, have a significant effect on job attitude, and self-esteem has a mediating effect on the relationship between these variables. Based on the results of this analysis, the importance of social support of the public social worker was suggested.

• 한국사회복지학
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• 제46권
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• pp.377-403
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• 2001

The purpose of this study is to measure the social worker's knowledge about facts on aging and attitude toward the elderly between Korea and Japan. and to find out the variables that may influence their attitude. Four hundred and sixty two social workers working in nursing homes were given the questionnaire containing the Kyung San Facts on Aging Quiz to measure the level of knowledge about aging and Yoon (1988)'s scale to find the direction of attitude toward the elderly. The results of this study are analyzed as follows: (1) The Korean social worker's level of knowledge about aging was 63.0%, which was lower than Japanese social worker's level (67.6%). (2) Using 5 points scale. mean of the Korean social worker's attitude toward the elderly was 2.2 (44.8%), which was significantly different from the Japanese social worker's attitude 3.2 (63.4%). (3) Using multiple regression analysis, the social worker's level of knowledge about aging was the most significant predictor to explain the social worker's attitude toward the elderly. The other variables that are also statistically significant predictors of the social workers' attitude were country, personal experience with the elderly. and voluntary experience for the elderly. Especially the significant predictors to explain the Korean social workers' attitude were their levels of knowledge about aging. age, and classification of social worker license. On the other hand. the significant predictors to explain the Japanese social workers' attitude were their levels of knowledge about aging and periods of activity, Based on the research results, implications for practice and education methods for making social workers' attitude toward the elderly more positive are also suggested.