• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.15 no.4
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• pp.257-270
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• 2022

In this paper, we design a smart factory risk improvement system and risk improvement method using AI edge devices. The smart factory risk improvement system collects, analyzes, prevents, and promptly responds to the worker's work performance process in the smart factory using AI edge devices, and can reduce the risk that may occur during work with improving the defect rate when workers perfom jobs. In particular, based on worker image information, worker biometric information, equipment operation information, and quality information of manufactured products, it is possible to set an abnormal risk condition, and it is possible to improve the risk so that the work is efficient and for the accurate performance. In addition, all data collected from cameras and IoT sensors inside the smart factory are processed by the AI edge device instead of all data being sent to the cloud, and only necessary data can be transmitted to the cloud, so the processing speed is fast and it has the advantage that security problems are low. Additionally, the use of AI edge devices has the advantage of reducing of data communication costs and the costs of data transmission bandwidth acquisition due to decrease of the amount of data transmission to the cloud.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.434-435
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• 2011

오늘날 전자계 노출과 건강의 연관성에 대한 관심이 높아지면서 인체보호와 전자파의 안정적인 이용, 일반대중의 불안감 해소를 위한 가이드라인이 제시되었다. 일반인보다 전자파에 대한 접촉빈도가 높고 노출영향이 큰 송전선로 철탑작업자에 대한 전자계노출량을 측정하고 기준치와 비교하며 저감대책을 제시하고자 한다.

• Knowledge Management Research
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• v.13 no.4
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• pp.71-82
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• 2012

The purpose of this study is to investigate the effects of employees who attend graduate school on the expansion of the knowledge sharing network in their company. For this purpose, the researchers chose 10 worker-graduate students and 75 members of company 'A' that they belong to and 107 members of university 'B' that they belong to, 172 members in total. 10 overlapped employee-students were excluded. The results of this study are summarized as follow: First, the personal relations of the employee-students enhanced after they have entered the graduate school. The score for the question was 3.85 out of 5 points. Second, the employee-students played the role of the knowledge bridge between company's co-worker network and graduate school's classmate network. It was confirmed that the density of the company's network was higher than the density of the connected network of the company and the graduate school. The analysis result confirmed that the difference of the two groups was significant. This means that the company carried out exchange with more members and therefore gained various kinds of knowledge. Also, in all types of network, the structural hole of the company network was lower than that of the connected network of the company and graduate school. The ANOVA test using QAP procedure confirmed that the difference of two groups was significant (friendship network F=1.2856, p<0.05; information network F=1.278, p<0.05; and trust network F=1.23, p<0.05). It means that the company not only gained the newly acquired knowledge by the knowledge bridge of the employee-students, but also was able to share it more effectively with members. Third and lastly, the employee-students share various information related to the organization, duties and roles rest in the company throughout break time, working hours and direct inquiries. This means that the employee-students contributed to the innovation of knowledge sharing in the company by sharing knowledge that they gained from the graduate school within the company.

• Industrial Engineering and Management Systems
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• v.12 no.4
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• pp.368-379
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• 2013

Efficiency in work training is a perennial issue due to high-diversity low-volume production, particularly for manufacturers producing office machines which are manually assembled by workers. To reduce the training cost, parts used in training are usually reused; a trainer disassembles a product assembled by a worker in training. This paper proposes a training method that employs disassembly usually performed by a trainer. This method assigns both assembly and disassembly to a worker in training, in contrast to the conventional method. The effectiveness of the proposed method is experimentally discussed in terms of learning assembly motions and work procedure at each learning stage, namely, "undergoing learning," "immediately after learning," and "seven days after learning." The effectiveness of the training method is confirmed. The method improves the stability of work procedure recollection immediately after training. Furthermore, at seven days after training, it improves retention of the assembly motions and work procedure, and also promotes and maintains memory related to product structure.

• Progress in Medical Physics
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• v.28 no.2
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• pp.45-48
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• 2017

This paper evaluated the amount of radiation generated by wedge filters during radiation therapy using a high-energy linear accelerator, and the dose to the worker during wedge replacement. After 10-MV photon beam was irradiated with wedge filter, the wedge was removed from the linear accelerator, and the dose rate and energy spectrum were measured. The initial measurement was approximately 1 uSv/h, and the radiation level was reduced to 0.3 uSv/h after 6 min. The effective half-life derived from the dose rate measurement was approximately 3.5 min, and the influence of AI-28 was about 53%. From the energy spectrum measurements, a peak of 1,799 keV was measured for AI-28, while the peak for Co-58 was not measured in the control room. The peaks for Au-106 and Cd-105 were found only measurement was done without wedge removement from the linear accelerator. The additional doses received by the radiation worker during wedge replacement were estimated to be 0.08-0.4 mSv per year.

• Journal of the Korea Institute of Building Construction
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• v.23 no.1
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• pp.81-92
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• 2023

According to the 2020 industrial accident reports of the Ministry of Employment and Labor, the number of fatal accidents in the construction industry over the past 5 years has been higher than in other industries. Of these more than 50% of fatal accidents are initially caused by fall accidents. The central government is intensively managing falling/jamming protection device and the use of personal protective equipment to eradicate the inappropriate factors disrupting safety at construction sites. In addition, although efforts have been made to prevent safety accidents with the proposal of the Special Act on Construction Safety, fatalities on construction sites are constantly occurring. Therefore, this study developed a model that automatically detects the wearing state of the worker's safety helmet and belt using computer vision technology. In considerations of conditions occurring at construction sites, we suggest an optimization method, which has been verified in terms of the accuracy and operation speed of the proposed model. As a result, it is possible to improve the efficiency of inspection and patrol by construction site managers, which is expected to contribute to reinforcing competency of safety management.

• Physical Therapy Korea
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• v.12 no.3
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• pp.1-10
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• 2005

The purpose of this study was to examine associations between subjective symptoms of musculoskeletal diseases and the degree of job stress among shipyard workers. The study population was 7,078 employees of the D shipbuilding company. Survey data was obtained from 1,727 employees using a proportional sample according to age and a self-administered questionnaire. The associations were examined with ${\chi}^2$ and logistic regression. The main results were as follows: First, the prevalence of musculoskeletal disease in any one part is 59.5% by NIOSH standard. Second, subjects who had worked in the shipyard for over five years had a prevalence of musculoskeletal disease 1.8 times higher than subjects who had worked in the shipyard for less than five years (p<.01). Finally, those who had less support from co-worker's had a prevalence of musculoskeletal disease 1.3 times higher than subjects who had more support from co-worker's (p<.05). Throughout the results, shipyard workers had higher occurrences of musculoskeletal diseases than other manufacturing workers and the risk of musculoskeletal disorder tended to increase with higher job stress. In this research, the plan to reduce musculoskeletal diseases involved making a program and policy which would be able to lower job stress socio-psychologically. This research will prove useful by using basic preventive materials to improve the musculoskeletal health of labores who work in shipyards and similar places.

• Journal of Society of Preventive Korean Medicine
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• v.17 no.3
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• pp.115-128
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• 2013

Objectives : This study was aimed to investigate burn out degree of K.M.D.s(Korean medicine doctors) who work at convalescent hospitals and to find contributional factors for the result. The relationship between burn out and job performance was also studied. Methods : 77 K.M.D.s(Male 49(63.6%), Female 28(36.4%)) participated in this survey that has 62 main questions about burn out, job performance, job environment and Social demographic characteristics. Survey was conducted from 19th Aug. 2013 to 6th Nov. 2013. Results : Average of burn out degree of K.M.D.s was 2.62 out of 5. Emotional exhaustion was highest (2.80) and depersonalization was lowest(2.20) among subordinate concepts of burn out. Work place location and average income of the subjective which are subordinate concepts of social demographic characteristics showed significant correlation with job performance. Role conflict, relation of co-worker, workload were significant factors for emotional exhaustion and meaning of the job, will of patient, challenge were significant factors for lack of feeling of accomplishment by multiple regression analysis. Relation of co-worker, aggression of patient and meaning of the job were also significant factors for depersonalization. Conclusion : Emotional exhaustion and lack of feeling of accomplishment among subordinate concepts of burn out were high in the subjective who participated this study. Significant factors that contribute to burn out of this study, shows different result compare to the studies that show other factors contribute to burn out who works at convalescent hospital or other place.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.365-375
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• 2020

This study aims to develop and apply Person-Centered Nursing educational program for clinical nurses. This study followed the ADDIE instructional design model to develop the Person-Centered Nursing educational program for clinical nurses. To investigate the effect of application, a non-equivalent control group posttest-pretest design was used to evaluate the clinical nurse's self-awareness, interpersonal relationship competency, self-esteem, co-worker support, and nursing job satisfaction. The results of the study showed that the self-awareness, interpersonal relationship competency, co-worker support and nursing job satisfaction scores of the control and experimental groups were significantly different between the groups based on time of measurement. Person-Centered Nursing competency was identified as a crucial element in addition to the knowledge, skills, and attitude essential to a clinical nurses.

• Korean Journal of Childcare and Education
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• v.8 no.1
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• pp.109-124
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• 2012

This study observed co-worker's conflict situations and interpersonal conflict management strategies from 5 teacher's conversations and informal gatherings in a new born child classroom. Taxonomic analysis, Domain analysis, and Componential analysis(Spradley, 1980) were used to analyze co-worker's conflict situations, and Styles of Handling Interpersonal Conflict(Rahim, 1983) were used to analyze the child care teachers' interpersonal conflict management strategies. The findings of this study were as follows: First, child care teachers experience conflict. The causes of conflict were to do their best, to protect the right of teachers, and to work jointly. Second, Dominating conflict management strategy was used when a cook wouldn't provide teacher's snacks or adopt a teacher's suggestion about methods of providing snacks. Avoiding conflict management strategy was used when a cleaner asked for help or a supervisor asked for extra work. Integrating conflict management strategy was used when infant care teachers suggested ways to go on a vacation. Obliging conflict management strategy was used when teachers followed the principal's directions to sit in and observe another teacher's classroom. Compromising conflict management strategy was used when infant care teachers suggested ways to clean up a play room together.