• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.69-82
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• 2000

Physical therapists are exposured to radio-and microwave-frequency electromagnetic radiation by operating electrotherapy units. So there is few protection system in physical therapy room. Clinical pathology room and so on where various kins of electromagnetic instruments is used in hospital while protection failities like protection wall or protection glass is being used only in radiological room to reduce the damage of radiation. Acoording to Larsen's survey on female physical therapist in denmark. it was said that the percentage of congenital malfornation was $3.6\%$ and cadiac malformation made up $0.7\%$. It is likely that effect of electromagnetic fields on the result cannot be ruled out. Rita ouellet-Hellstron and Walter F. Steward insisted that the danger of abortion increase in the case of pregnant femeal physical therapist exposured to microwave diathermy. The intention of our study is arousing the necessity of microwave protection in P.T room and finding the proper method for physical therapist safe. The results of this study were as follows: 1. Each electrotherapy units are occurrenced the electromagnetic fields, and specially amply occurrenced in H.P,I.C.T 2 unit operating, M.W.D unit head on parallel, S.W.D unit head on parallel. all electrotherapy units are operating. 2. There were electric fields mount are consideration to species of electrotherapy units(p<.05). 3. There were magnetic fields mount are consideration to species of electrotherapy units(p<.05). 4. There were electric fields mount are consideration to distance of electrotherapy units(p<.05). 7. There were magnetic fields mount are consideration nut to distance of electrotherapy units(p>.05). 8. Before and after protection on magnetic fields mount are consideration to all distance(0m, 0.3m, 1m, 3m, 5m)(p<.05) 9. Before and after protection on electric fields mount are consideration to 0m, 1m, 3m distance(p<.05), and consideration not to 0.3m, 5m distance(p>.05) 10. After protection fellow the each electrotherapy units. distance, intencity to electromagnetic fields are reduced(p<.05).

• Nuclear Engineering and Technology
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• 제41권5호
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• pp.747-752
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• 2009

A vulnerability assessment is essential for the efficient operation of a physical protection system (PPS). Previous assessment codes have used a simple model called an adversary sequence diagram. In this study, the use of a two-dimensional (2D) map of a facility as a model for a PPS is suggested as an alternative approach. The analysis of a 2D model, however, consumes a lot of time. Accordingly, a generalized heuristic algorithm has been applied to address this issue. The proposed assessment method was implemented to a computer code; Systematic Analysis of physical Protection Effectiveness (SAPE). This code was applied to a variety of facilities and evaluated for feasibility by applying it to various facilities. To help upgrade a PPS, a sensitivity analysis of all protection elements along a chosen path is proposed. SAPE will help to accurately and intuitively assess a PPS.

• 한국안전학회지
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• 제24권5호
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• pp.63-68
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• 2009

The urgent VAI method development is required since "The Act of Physical Protection and Radiological Emergency that is established in 2003" requires an evaluation of physical threats in nuclear facilities and an establishment of physical protection in Korea. The VAI methodology is developed to (1) make a sabotage model by reusing existing fire/flooding/pipe break PSA models, (2) calculate MCSs and TEPSs, (3) select the most cost-effective TEPS among many TEPSs, (4) determine the compartments in a selected TEPS as vital areas, and (5) provide protection measures to the vital areas. The developed VAI methodology contains four steps, (1) collecting the internal level 1 PSA model and information, (2) developing the fire/flood/pipe rupture model based on level 1 PSA model, (3) integrating the fire/flood/pipe rupture model into the sabotage model by JSTAR, and (4) calculating MCSs and TEPS. The VAT process is performed through the VIPEX that was developed in KAERI. This methodology serves as a guide to develop a sabotage model by using existing internal and external PSA models. When this methodology is used to identify the vital areas, it provides the most cost-effective method to save the VAI and physical protection costs.

• 한국안전학회지
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• 제26권4호
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• pp.87-95
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• 2011

The urgent VAI(Vital Area Identification) method development is required since 'The Act of Physical Protection and Radiological Emergency' that is established in 2003 requires an evaluation of physical threats in nuclear facilities and an establishment of physical protection in Korea. The KAERI(Korea Atomic Energy Research Institute) has developed the VAI methodology and VAI software called as VIPEX(Vital area Identification Package EXpert) for identifying the vital areas. This study is to demonstrate the applicability of KAERI's VAI methodology to a hypothetical facility, and to identify the importance of information of cable and piping runs when identifying the vital areas. It is necessarily needed to consider cable and piping runs to determine the accurate and realistic TEPS(Top Event Prevention Set). If the information of cable and piping runs of a nuclear power plant is not considered when determining the TEPSs, it is absolutely impossible to acquire the complete TEPSs, and the results could be distorted by missing it. The VIPEX and FTREX(Fault Tree Reliability Evaluation eXpert) properly calculate MCSs and TEPSs using the fault tree model, and provide the most cost-effective method to save the VAI and physical protection costs.

• The Journal of Korean Physical Therapy
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• 제28권2호
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• pp.155-163
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• 2016

Purpose: Infection management is important for physical therapists in order to protect patients and themselves since they often provide patient care and have physical contact with patients. This study examined the performance of infection control and associated factors among physical therapists. Methods: The study subjects were 174 physical therapists working in the G metropolitan city. The performance of infection control according to general characteristics, job-related characteristics, and infection-related characteristics were compared using t-test and ANOVA. Associations between awareness and performance of infection control were tested by correlation. Finally, multiple linear regression analyses were performed to examine the factors associated with performance of infection control. Results: Overall performance scores for personal and therapy room were $87.47{\pm}11.70$ and $70.08{\pm}13.68$, respectively. Both personal and therapy room infection control were lower for the degree of performance than the degree of awareness. In multiple linear regression analysis, the degree of performance at a personal level was related to current smoking status, type of charge therapy, supply of protection equipment, and awareness of personal infection control. The degree of performance of therapy room was related to injury experience in the workplace, supply of protection equipment, and awareness of therapy room infection control. Conclusion: Performance of therapy room infection control was lower than that of personal infection control. The performance was associated with the supply of protection equipment and awareness. Therefore, the degree of performance for infection control will be increased with proper supply of protection equipment in the hospital and increase the degree of awareness with adequate prevention education.

• Nuclear Engineering and Technology
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• 제52권8호
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• pp.1661-1668
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• 2020

A physical protection system (PPS) is used for the protection of critical facilities. This paper proposes a structure analytic hierarchy approach (SAHA) for the hierarchical evaluation of the PPS effectiveness in critical infrastructure. SAHA is based on the traditional analysis methods "estimate of adversary sequence interruption, EASI". A community algorithm is used in the building of the SAHA model. SAHA is applied to cluster the associated protection elements for the topological design of complicated PPS with graphical vertexes equivalent to protection elements.

• Corrosion Science and Technology
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• 제7권4호
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• pp.197-200
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• 2008

In this paper, physical scale modeling was employed to identify the configurations of ICCP system and the electric field signatures. Computational boundary element modeling technique has been used to simulate the performance of the CP system and to predict the associated electric fields signatures. The optimization methods combined with the computer models and physical scale modeling will be presented here, which enable the optimum system design to be achieved both in terms of the location and current output of the anode but also in the location of reference electrodes for impressed current cathodic protection(ICCP) systems. The combined methodology was utilized to determine optimal placement of ICCP components (anodes and reference electrodes) and to evaluate performance of ICCP system for the 2%, 10% and 14% wetted hull coatings loss. The objective is to design the system to minimise the electric field while at the same time provide adequate protection for the ship. The results show that experimental scale modeling and computational modeling techniques can be used in concert to design an optimum ICCP system and to provide information for quickly analysis of the system and its surrounding environment.

• 지능정보연구
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• 제17권1호
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• pp.71-90
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• 2011

본 연구는 정보보호의 통제활동(물리적 보안, 관리적 보안, 기술적 보안)이 조직유효성에 미치는 영향과 정보 활용의 조절효과를 실증적으로 분석하는데 목적을 갖고 연구하였는데 그 결과를 요약하면 다음과 같다. 첫째, 정보보호 통제활동(물리적 보안, 기술적 보안, 관리적 보안)이 조직유효성에 미치는 영향을 검증한 결과 물리적 보안, 기술적 보안, 관리적 보안요인이 조직유효성에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다(p < .01). 둘째, 정보보호 통제활동(물리적 보안, 기술적 보안, 관리적 보안)이 정보 활용에 미치는 영향을 검증한 결과 기술적 보안, 관리적 보안요인이 정보 활용에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났다(p < .01). 셋째, 조직유효성에 영향을 미치는 정보보호 통제활동(물리적 보안, 기술적 보안, 관리적 보안)이 정보 활용에 의해 조절되는지를 검증하기 위해 정보보호 통제활동(물리적 보안, 기술적 보안, 관리적 보안)과 정보 활용의 상호작용 변수를 추가적으로 투입한 모델의 설명력은 50.6%로 4.1%가 추가적으로 증가하였고, 추가적으로 투입된 상호작용 변수들 중에는 물리적 보안과 정보 활용의 상호작용 요인(${\beta}$ = .148, p < .01), 관리적 보안과 정보 활용의 상호작용 요인(${\beta}$ = .196, p < .01)이 통계적으로 유의미한 것으로 나타나(p < .01), 정보 활용은 통제활동 중 물리적 보안, 관리적 보안요인과 조직유효성 간의 관계를 조절하는 것으로 시사해 주었다. 이상의 결과를 볼 때, 정보보호를 위한 내부 통제활동으로서 물리적, 기술적, 관리적 요인이 정보활용 정도에 따라 조직유효성에 매우 유의적인 영향을 미치는 주요 기제임을 입증시켜 주었다. 이는 정보보호 통제활동에 있어서 물리적, 기술적, 관리적 보안요인이 모두 효율적으로 잘 수행될수록 정보활용 또한 높고 효율적으로 통제되고 정보활용이 조절 되는 것으로 나타내 이들 세 가지 요인 모두 유용한 정보활용을 위한 변수임을 실증해 주었다. 이 실증된 정보활용의 조절정도나 난이도에 따른 정보보호를 위한 조직효율성에서 종사자의 내부 고객만족과 정보관리의 효율, 위험리스크 감소에 매우 유의적인 성과를 나타내 주는 촉진기제로서 작용함을 시사한 것이라 볼 수 있다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2013년도 추계학술대회 논문집
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• pp.85-86
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• 2013

This paper describes the physical configuration and features of the advanced control and protection devices, and operation control and monitoring system that are connected to a real time simulator for LS Industrial System 80kV 60 MW Jeju HVDC Pilot Project. Highlight of simulation result are provided to demonstrate the control and protection functionality.

• 한국생활과학회지
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• 제22권1호
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• pp.141-155
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• 2013

The purpose of this study is to identify consumers' needs and purchase intention of high-functional sportswear according to sports participation motivations. Internet survey was done for data collection and the subjects were 300 consumers in their 20-39's who participated in sport activities at least once a week. Factors of sport participation motivations were ostentation, social interaction, self development, mental health, and physical health. Consumers were segmented into the motivation retard group, the multi-purpose pursuit group, the health pursuit group, and the extrinsic motivation pursuit group. And factors of consumers' needs for high-functional sportswear were practicality and comfort function, body protection and physical function, and skin protection and health function. The multi-purpose pursuit group showed strong needs for active and comfort, body protection and physical function, and skin protection and health function but the motivation retard group showed the lowest needs for high functional sportswear. Purchase experiences of high-functional sportswear, accomplishment, and duration period of sport activity affected positively on the purchase intention of high-functional sportswear.