• Journal of Korea Society of Industrial Information Systems
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• v.7 no.3
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• pp.68-73
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• 2002

This study has been advanced to the design method for embodying the hydraulic circuit and control device in considering the safety for the development of wheelchair lift, using in the public transportation bus. Recently, mobility and accessibility occurs for the elder and the handicapped in the aging problem, In this paper, we design the hydraulic power system to operate lifter loading one wheelchair handicapped person and one's supporter to get in the bus. We develop the lifter safely. We check the trajectories of lifter inside frame box to protect its corrosion and the stress at the joints of mechanical structure. Those can be helped to keep the safety and accuracy of the multiple dynamic systems for precision quality assurance in mass production.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2002.11a
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• pp.487-489
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• 2002

Recently, mobility and accessibility occurs for the elder and the handicapped in the aging problem. In this paper, we analyze the dynamics of slide-up seat, which helps to care the handicapped passenger in and out the automobile when we enjoy trip with the families including the elder and handicapped. We check the trajectories of slide-up seat inside and outside car to protect its corrosion and the stress at the joints of mechanical structure. Those can be helped to keep the safety and accuracy of the multiple dynamic systems for precision quality assurance in mass production.

• The Korean Journal of Food And Nutrition
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• v.10 no.3
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• pp.414-421
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• 1997

HACCP procedures are regarded as essential components of modern safety assurance programs for all forms of food processing and preservation, including irradiation. Control of hazards and classification of hazardous microorganisms and indicator organisms (and related tests) are helpful to establish preventive and practice regulations at each facility. A carefully conceived and well implemented system assure the safety of all products. The HACCP is designed to prevent defects, rather than to detect them as in traditional end-point testing and inspection, as controlling requirements into food formulations, processing parameters and operating practices. This article commentes on some equipments and materials for HACCP system.

• Journal of agricultural medicine and community health
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• v.31 no.1
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• pp.63-79
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• 2006

Korea's self-sufficient food ratio on a quantity basis remained a low 27.6 per cent for cereals in year 2004. Even the public auction of imported rice from the United States kicked off a couple of days ago to allow foreign rice to be sold directly to consumers on the Korea market for the first time. Therefore the safety of imported food must be a great concern of Korean consumers. All imported agricultural products are supposed to be quarantined for controlling the insect and inspected for the potent risk like residual pesticides, aflatoxin, sulfur dioxide and genetically modified. agricultural products. The 12 percent of agricultural products contained the insects detected by National Plant Quarantine was fumigated with methyl bromide or aluminum phosphide and entered the custom. The most large portion of violated agricultural products (24 cases in 2004) inspected by Korea Food and Drug Administration was dried herbal medicinal foods contaminated by sulfur dioxide which must be treated when they were dried in China. The second factor made the imported agricultural products to be criminals (19 cases in 2004) was residual pesticides. Genetically modified agricultural products like soybean and corn are under control by labelling in Korea. Genetically modified soybean and corn have been used for oil expression mostly. It is the time to set up realistic risk assessment system for our consumer with the pouring imported agricultural products.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.11a
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• pp.487-489
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• 2002

Recently, mobility and accessibility occurs for the elder and the handicapped in the aging problem. In this paper, we analyze the dynamics of slide-up seat, which helps to care the handicapped passenger in and out the automobile when we enjoy trip with the families including the elder and handicapped. We check the trajectories of slide-up seat inside and outside car to protect its corrosion and the stress at the joints of mechanical structure. Those can be helped to keep the safety and accuracy of the multiple dynamic systems for precision quality assurance in mass production.

• 유체기계공업학회:학술대회논문집
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• 2004.12a
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• pp.635-640
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• 2004

The present paper provides the design specifications and working principle of flow controlling vortex valve which will be adopted in a Korean next generation reactor (APR1400). The vortex valve is installed inside the pressurized safety injection tank of APR1400, and it passively controls the water discharge flowrate from the tank. In the present study, the performance of the vortex valve have been evaluated throughout the repeated experiments in the full-scale test facility called VAPER(VAlve Performance Evaluation Rig). Based on the experimental results, it is confirmed that the currently developed vortex valve satisfies the major performance requirements of APR1400 plant design in view of the peak discharge flowrate, pressure loss coefficient, and total discharge duration time. To achieve the highest quality of the experimental results, a quality assurance program for vortex valve tests has been strictly applied.

• Journal of the Korea Safety Management & Science
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• v.17 no.4
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• pp.305-319
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• 2015

Among recent management innovation activities of hotel, one of the most important competitive advantage through customer satisfaction, and to which members of the organization's service orientation is essential. The hotel's service orientation is closely related to the organization's culture. In this study, the organization's service-oriented culture, the internal service quality, emotional commitment and continued commitment and ultimately affects the employee's influence on customer orientation will look at that. Results and implications of this study can be summarized as follows. the internal service quality among the factors corporeality, responsiveness and assurance, empathy, job satisfaction showed a significant influence on the type of empathy and emotional commitment castle had a significant impact on. With these results, relationships with colleagues within the organization, such as work environment and job satisfaction and emotional commitment, the atmosphere is very important to know that you can affect. Therefore, the members of the hotel to increase customer satisfaction and organizational commitment, corporate culture, business as well as collaboration with colleagues to share the emotional atmosphere of sympathy for the business environment will get improved.

• Journal of the Korea Safety Management & Science
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• v.17 no.4
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• pp.181-192
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• 2015

The health care markets are rapidly expanded due to population aging, increasing incomes, strengthening assurance of health insurance and so on, and the competition in the markets is getting serious. In the industry, hospitals have played more important role than any others, where doctors, nurses, medical technicians, administrative staff, etc cooperatively works hard. Among them, nurses capture 40 percents of specialized hospital workers and their role for patients as customers is essential. Therefore, it could be one of the most important keys to increase the productivity and wellbeing of nurses with respect to enhancing efficiency and competitiveness of operating hospitals. In this paper the impact of nurses' job satisfaction, job stress, burnout, and organizational citizenship behavior on their productivity is studied. The subjects were 576 nurses in 20 different hospitals in Seoul, Kyounggi, etc. We held hypotheses and statistically tested and analysed them, using SPSS 20.0 software. Thus, we found various significant results(p<0.05), and they will give useful suggestions for managing nurse manpower and enhancing their productivity.

• Journal of the Korea Safety Management & Science
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• v.21 no.4
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• pp.67-74
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• 2019

Visual inspection is regarded as one of the critical activities for quality control in a manufacturing company. it is thus important to improve the performance of detecting a defective part or product. There are three probable working modes for visual inspection: fully automatic (by automatic machines), fully manual (by human operators), and semi-automatic (by collaboration between human operators and automatic machines). Most of the current studies on visual inspection have been focused on the improvement of automatic detection performance by developing a better automatic machine using computer vision technologies. However, there are still a range of situations where human operators should conduct visual inspection with/without automatic machines. In this situation, human operators'performance of visual inspection is significant to the successful quality control. However, visual inspection of components assembled into a mobile camera module belongs to those situations. This study aims to investigate human performance issues in visual inspection of the components, paying more attention to human errors. For this, Abstraction Hierarchy-based work domain modeling method was applied to examine a range of direct or indirect factors related to human errors and their relationships in the visual inspection of the components. Although this study was conducted in the context of manufacturing mobile camera modules, the proposed method would be easily generalized into other industries.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.06a
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• pp.57-61
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• 2002

Recently, mobility and accessibility occurs for the elder and the handicapped in the aging problem. In this paper, we analyze the dynamics of motor-scooter lifter, which helps to move the scooter in the automobile when we enjoy trip with the families including the elder and handicapped. We check the trajectories of lifter inside car to protect its corrosion and the stress at the joints of mechanical structure. Those can be helped to keep the safety and accuracy of the multiple dynamic systems for precision quality assurance in mass production.