• Journal of the Korea Safety Management & Science
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• v.8 no.3
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• pp.67-75
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• 2006

Scheduling of dismantling old research reactor need to consider time, cost and safety for the worker. The biggest issue when dismantling facility for research reactor is safety for the worker and cost. Large portion of a budget is spending for the labor cost. To save labor cost for the worker, reducing a lead time is inevitable. Several algorithms applied to reduce read time, and safety considered as the most important factor for this project. This research presents three different dismantling scheduling scenarios. Best scenario shows the specific scheduling for worker and machine, so that it could save time and cost.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.23 no.1
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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 the Korean Society of Clothing and Textiles
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• v.31 no.4 s.163
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• pp.624-632
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• 2007

The purpose of this study is to analyze whether a degree of media and appearance concern have an effect on appearance management of workers, and to analyze difference of appearance management with worker's men and women. A survey was conducted from September 20 to October 2 in 2006, among worker's men and women. The 538 subjects were used to statistics, and the statistical analysis methods were frequency analysis, reliability analysis, factor analysis, t-test, and multiple regression analysis. First, a degree of media concern factors were determined to be media-advertisement concern, media-information concern. And a degree of appearance concern factors were determined to be appearance-styling concern, appearance-management concern. Second, a degree of media and appearance concern factors had an effect on appearance management of workers. Therefore, the more a degree of media and appearance concern was higher, the more appearance management was higher. Third, worker's women than men were shown to have many concern about media, appearance concern and appearance management.

• International Journal of Reliability and Applications
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• v.3 no.2
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• pp.61-80
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• 2002

Tree-harvesting worker data of 508 separate worker accidents are analyzed and an exploratory approach taken. The worker accident data cover a sample of five years. The scope of the study was the southeastern United States of America. As might be hypothesized, the chainsaw was the most hazardous type of tree-harvesting equipment. It accounted for 55％ of the tree-harvesting accidents. Most chainsaw accidents resulted in injuries to the lower extremities and were more frequent among younger employees. The probability of one or more chainsaw accidents occurring in any 30-day period was approximately 0.856. Chainsaw accidents were more likely to occur in late morning and early afternoon. We used statistical tools such as Pareto charts, c-charts and Ishikawa diagrams. Such tools are useful in diagnosing the root-cause of tree-harvesting worker accidents and help in developing preventive safety programs. Recommendations to help improve the quality of information of accident data collected by insurance companies and others are briefly given. The strategy and culture of continuous process improvements are stressed.

• The Korean Journal of Health Service Management
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• v.8 no.3
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• pp.27-38
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• 2014

The purpose of this study is proving the effects of the internal customer satisfaction management on worker's job satisfaction at general hospital. In the relationship between the management and the satisfaction, the study also finds the moderating effect of the organizational support awareness and the organizational justice. For this study, it was surveyed targeting 270 employees who work in seven general hospitals in Busan. As the result, 246 questionnaires returned. All of these questionnaires were used in the final analysis. The method of analysis is descriptive statistics using SPSS VER. 18.0, correlation analysis, regression analysis, factor analysis and reliability analysis. The main results of empirical analysis were as follows: First, in the effect of the internal customer satisfaction management to worker's job satisfaction, it has positive effect to internal communication and the commission of authority and it has positive effect to worker's job satisfaction. Second, the organizational support awareness & the organizational justice have moderating effect on the relationship between the internal customer satisfaction management and worker's job satisfaction. Third, the study proves that supporting management hierarchy shows positive effects for all socio-demographic characteristics in the organizational support awareness and the organizational justice.

• Journal of the Korea Safety Management & Science
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• v.26 no.2
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• pp.43-53
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• 2024

This study analyzes the importance-performance analysis (IPA) of the 10 dimensions of the smart construction safety management system, and analyzes which dimensions are important and which dimensions are performing to determine key improvement tasks, incremental improvement tasks, Maintenance and reinforcement tasks and continuous maintenance tasks were derived. Among the 10 dimensions of the smart construction safety management system, the dimensions that are recognized as important by all field managers and field workers and have high performance are the automatic risk displacement measurement system, smart environmental sensor system, and heavy equipment seizure prevention system. However, areas that were perceived as having high importance but low performance were worker location tracking systems, smart safety helmet chin muscles, and smart safety ring fastening. Among the smart construction safety management systems perceived by field managers, areas for key improvement with high importance and low performance included worker location tracking system and smart safety ring fastening. Among the smart construction safety management systems perceived by field workers, the area for key improvement with high importance and low performance was the automatic risk displacement measurement system.

• Journal of Radiation Industry
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• v.18 no.3
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• pp.209-215
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• 2024

Radiation work always carries the risk of radiation exposure, so regulatory agencies manage it through licensing when high exposure is expected. However, due to passive management methods using TLD, etc., there are cases where risk management is done after an incident occurs or the incident is covered up. In this study, we developed a system to manage the location of radiation work and the risk of workers in real time through a safety management platform and a location-based personal dosimeter. The safety platform server receives data from the developed personal dosimeter in real time and manages risks in three steps for each worker using location and dose rate, and can predict risks and generate alarms in real time. The personal dosimeter transmits the location and dose rate of the worker in real time using GPS and LTE communication. The developed safety management platform and personal dosimeter were verified through a field test to receive real-time data of the location and dose rate data of the worker, and the risk management function according to the individual dose rate was verified.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.14 no.24
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• pp.179-185
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• 1991

This study aims to consider the necessity and meaning of the Company-Wide Creativity Development(CWCD) for the unfolding of the strategic management in the creation age. The brief summary of the meaning of the CWCD for the unfolding of the strategic management is as follows. (1) The activation of the information interchange through the consonance among the all department. (2) The Information interchange and cooperation between the worker and the manage. (3) The creativity development of worker.

• Journal of the Korea Society of Computer and Information
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• v.23 no.2
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• pp.63-70
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• 2018

Safety management agent manages the risk behavior of the worker with the naked eye, but there is a real difficulty for one the agent to manage all the workers. In this paper, IoT device is attached to a harness safety belt that a worker wears to solve this problem, and behavior data is upload to the cloud in real time. We analyze the upload data through the deep learning and analyze the risk behavior of the worker. When the analysis result is judged to be dangerous behavior, we designed and implemented a system that informs the manager through monitoring application. In order to confirm that the risk behavior analysis through the deep learning is normally performed, the data values of 4 behaviors (walking, running, standing and sitting) were collected from IMU sensor for 60 minutes and learned through Tensorflow, Inception model. In order to verify the accuracy of the proposed system, we conducted inference experiments five times for each of the four behaviors, and confirmed the accuracy of the inference result to be 96.0%.

• Proceedings of the Safety Management and Science Conference
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• 2006.11a
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• pp.287-292
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• 2006

Reducing the logistic cost may be accomplished by numbers of logistic management methods, but the most fundamental and essential one is the accomplishment of the consistent reverse logistics system that is the core of worker performance system, and the purpose of consistent reverse system is the treatment of logistic functions such as transportation, storage and unloading with consistent logistics, and increasing the turnover ratio is required for the improvement of the system. As the turnover ratios is increased, this paper make reverse worker performance evaluation system with lifetime value include of weight variables.