• The Journal of the Korea Contents Association
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• v.13 no.10
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• pp.27-36
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• 2013

Recently, as researches on VANET have actively progressed, the convenient and reliable services can be provided to the vehicles. In this paper, we propose the collaborative RSU scheduling scheme using multiple RSUs which are connected through a wired backbone. The proposed scheme efficiently disseminates both unsafety data and safety data, and reduces the deadline miss rate and the average response time. When safety data is occurred, it is send to previous RSU in advance and is scheduled by deadline and reception rate. We provide the prevention technology for unsafety data when the workload is occurred in RSU because it is on-demand data processed by user requests. It is shown through performance evaluation that the proposed scheme outperforms the existing scheme in terms of the deadline miss rate and the average response time according to the number of vehicles and the velocities of vehicles.

• Journal of the Korean Society of Safety
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• v.8 no.3
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• pp.78-82
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• 1993

The object of research is detecting and eliminating the unsafty factor in shortest time through a decision making simulation under uncertainty using simulation method The decision making simulation using C language Is used to analyze data from several factors which affects the crane breakdown under unsafe situation. Through this research, the following conclusions are obtained. first, the safety manager or the person can estimate the time required to handle the unsafe factors. Secondly, The decision making can be accomplished by minimizing the time required under uncertainty by analyzing them.

• Journal of the Korea Safety Management & Science
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• v.17 no.1
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• pp.1-11
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• 2015

The efficient safety estimation for a business should analyze an accident data by considering every possible and potential factor. Thus, we consider several factors to build the safety estimation model to meet fairness and rationality. This paper present the yearly statistic data of accident from KOSHA analyze the data by industry, scale, year of service of a employee, age and other factors; build the safety estimation model for the business based on the accident report derived the analysis. The estimation model is established by the weights for accident type, degree, scale, industry, year of service, and age of the employee derived from ANP(Analytic Network Process).

• Journal of the Korea Safety Management & Science
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• v.12 no.2
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• pp.1-7
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• 2010

The efficient safety estimation for a business should analyze an accident data by considering every possible and potential factor. Thus, we consider several factors to build the safety estimation model to meet fairness and rationality. This paper present the yearly statistic data of accident from KOSHA analyze the data by industry, scale, year of service of a employee, age and other factors; build the safety estimation model for the business based on the accident report derived the analysis. The estimation model is established by the weights for accident type, degree, scale, industry, year of service, and age of the employee derived from AHP(Analytic Hierarchy Process).

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.16 no.1
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• pp.17-26
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• 2006

In order to obtain basic reference information for the establishment of effective industrial safety programmes in migrant workers who live in Seoul and Kyungin Area, accident causes were investigated among 210 injured workers. The data were analyzed according to the USA Standards Institute and International Labour Organization method. The results obtained were as follows: 1. The major distribution of national were mostly from china(82.9%), ages are mostly between 30 and 40 years old(32%), and males are more than females, and mostly married. 2. The parts of body most frequently injured were hand and finger, foot and toe, which were 55.3% of total 210 cases. 3. According to the accident type, caught in, under or between were most frequently observed, 40.2% of the total number of injuries. 4. The most responsible source of injuries were power machine, others, moving machine and tool, building construction. 5. According to the unsafe acts, carelessness and unsafety information were most frequently observed, 66.7% of the total number of injuries. 6. There were significantly difference(p<0.05), between type of accident and source of injury, and between working period and unsafe act.

• Korean Journal of Adult Nursing
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• v.20 no.1
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• pp.149-162
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• 2008

Purpose: The purpose of this study was to understand the meanings and nature of ICU admission experienced among patients with critical illness. The present study adopted a hermeneutic phenomenological method which was developed by van Manen. Methods: The participants for this study were 6 men and 3 women, who were over the age of 20 with ICU admission period more than 3 days. Data were collected by using in-depth interviews and observations from March, 2007 to September, 2007. The contents of the interviews were tape-recorded with the consent of the subject. Results: The essential themes that fit into the context of the 4 existential grounds of body, time, space and other people were as follows: a body that cannot react the way it wants, a wave of fear and insecurity everywhere, a struggle to survive, coming out from death's door, loss of time path, a long and continued waiting until escaping, more of machinery room than a patient's room, existence of life and death, an abyss of suffering seen thru another patient, taken care of by a doctor, trust and distrust, family, the ultimate safe zone. Conclusion: Critically ill patients in ICU experienced feelings of discomfort, unsafety, and insecurity. The result of this study can give nurses some insight into these experiences and help promote empathetic care.

• Korean Journal of Construction Engineering and Management
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• v.10 no.1
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• pp.78-90
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• 2009

Recently, operation of highway is the complex digital Infrastructure based on complicated IT. The application of IT is increasing more and more in digital Infrastructure. Though IT is very convenient, if unpredicted operating risk of highway occurs, widespread damage can be large. When operating risk of highway occurs, road users are out of smoothly-run service because of the operating interruption. This risk causes unpredicted operating management cost and additional maintenance cost. It will excess over the planned operating cost, which may leads to users's unsafety and operator's insolvency because of income loss. Until now, related studies to find out the risk are not sufficient. The purpose of this study is to suggest risk cost items and to estimate the reasonable risk cost by using simulation method in case of occurring the huge power failure at the operating digitalized highway. This study indicates the several plans to hedge against risk cost and the management of highway project. From now on, it will be used as basic data to confirm the soundness of operating system in Digital Infrastructure.

• Korean Journal of Construction Engineering and Management
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• v.10 no.1
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• pp.126-135
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• 2009

Recently, operation of highway is the complex digital Infrastructure based on complicated IT. The application of IT is increasing more and more in digital Infrastructure. Though IT is very convenient, if unpredicted operating risk of highway occurs, widespread damage can be large. When operating risk of highway occurs, road users are out of smoothly-run service because of the operating interruption. This risk causes unpredicted operating management cost and additional maintenance cost. It will excess over the planned operating cost, which may leads to users's unsafety and operator's insolvency because of income loss. Until now, related studies to find out the risk are not sufficient. The purpose of this study is to suggest risk cost items and to estimate the reasonable risk cost by using simulation method in case of occurring the huge power failure at the operating digitalized highway. This study indicates the several plans to hedge against risk cost and the management of highway project. From now on, it will be used as basic data to confirm the soundness of operating system in Digital Infrastructure.