• 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).

• 인터넷정보학회논문지
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• 제15권2호
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• pp.59-71
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• 2014

본 연구의 목적은 보호동기 이론을 기반으로 인터넷 사용자의 개인정보 보호행동의 변화를 설명하고, 사용자의 개인정보 권익을 보호하기 위한 방안에 대해 모색하는 것이다. 보호동기 이론은 위협메시지에 의한 보호행동의 변화과정을 설명하기 위한 대표적인 이론으로, 본 연구에서는 개인정보에 대한 위협과 개인정보 보호행동에 대한 개인의 인지적 평가가 보호동기를 형성하고 보호동기가 개인정보 보호행동에 어떠한 영향을 미치는지 확인하였다. 또한 개인정보 권리보장 및 권리구제와 관련된 법제도를 반영하여서 개인정보 권리인지 변인을 개발하였다. 즉 개인정보 관련 법률이 개인정보 보호에 대한 인식이나 행동변화에 어떠한 영향을 미치는지 알아보았다. 본 연구는 선행연구들과 달리 법제도를 반영한 개인정보 권리인지 변인을 개발하여 개인정보 보호행동의 변화에 대해 분석하였다. 연구의 결과 개인정보 권리인지 변인이 개인정보 보호행동에 유의미한 영향을 미치는 요인으로 밝혀졌으며, 법제도를 통한 정보주체의 권리보장이 개인정보 보호행동을 촉진시키는 것으로 나타났다. 본 연구의 결과가 추후 개인정보 관련 신규정책 확립에 있어서 도움을 줄 수 있을 것이라 생각한다.

• 경영과정보연구
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• 제33권3호
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• pp.21-33
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• 2014

본 연구는 최근에 해외직접투자의 결정요인으로써 간주되고 있는 투자대상국의 지적재산권 보호의 영향에 관하여 실증분석 하였다. 2000부터 2008년까지 미국의 다국적기업들을 대상으로 고정효과 모형(FEM)과 시스템 GMM을 사용하여 분석한 결과, 지적재산권 보호의 변화는 미국 다국적기업으로부터의 해외직접투자를 유입에 있어서 긍정적인 영향을 미치는 반면에, 지적재산권 보호의 정도는 유의적인 영향을 제공하지 않았다. 소득수준을 기준으로 고소득국가와 저소득국가로 나누어 실시한 추가 분석결과에서 역시 지적재산권 보호의 변화만이 저소득국가에서의 미국 다국적기업의 투자에 긍정적인 영향을 미치는 것으로 나타났다. 패널자료의 특성상 오차항의 이분산성(heteroscedasticity)을 고려하여 전체 투자대상국을 상대로 FGLS와 PCSE 분석을 실시한 결과에서도 지적재산권 보호의 변화만이 해외직접투자의 유입에 긍정적인 영향을 미치고 있음을 알 수 있으며, 동일한 방법으로 고소득국가와 저소득국가로 나누어 추가분석을 실시한 결과에서는, 저소득국가에서만 미국 다국적기업의 해외직접투자 유입에 유의적으로 긍정적인 영향을 제공하고 있음을 보여주었다. 이러한 결과는 투자대상국의 지적재산권 보호의 수준보다는 변화가 해외직접투자의 유입에 영향을 제공하는 것으로써, 특히 저소득국가가 미국 다국적 기업의 해외직접투자를 유입하기 위하여 지적재산권 보호의 변화에 대한 중요성을 시사한다.

• 자원리싸이클링
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• 제18권4호
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• pp.44-51
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• 2009

양극과 철근과의 사이에 이온의 흐름이 원활하도록 전도성이 우수한 탄소리본전극과 표면코팅을 실기한 후 무공해, 반영구적인 무한태양전기를 전류로 공급한 전기방식에 의한 콘크리트 중의 철근 부식 방지 효과를 알아보기 위하여 복극량, 철근의 복극전위 및 부식속도를 측정하였다. 실험결과 방식을 실시한 모든 대상 시험체가 NACE의 복극량 기준 100 mV 기준을 만족하였으며, 방식을 실시한 경우 복극전위와 부식속도가 안정적인 범위에 있음을 알 수 있었다.

• KEPCO Journal on Electric Power and Energy
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• 제6권2호
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• pp.119-122
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• 2020

With recent ESS (Energy Storage System) fire accident, the fault protection performance is becoming more important. However, there has never been any experiments with the protection performance on the faults in the ESS system level. In this study, the effect of AC ground fault and IGBT (Insulated Gate Bipolar mode Transistor) short-circuit failure on MW class ESS was performed experimentally for the first time in the world. First of all, the effect of the AC single line ground fault on battery was analyzed. Moreover, the transient voltage was investigated as a function of the battery capacity and the power level. Finally, the breaking capability and insulation performance of ESS were examined under PCS short-circuit fault condition. Through the tests, it was found that ESS protection system safely blocked the faulty current regardless of the faults, whereas the electronic parts such as IGBT and MC (Magnetic Contactor) were broken by the fault current. Also, the electrical breakdown in ESS resulted from the transient voltage during the protection process.

• 한국해양공학회지
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• 제18권1호
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• pp.69-74
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• 2004

In general, the protection method of Shell and Tube Type heat exchanger for a vessel has been applied as a sacrificial anode, which is attached at the inner side of the shell. However, this is an insufficient protection method for tube. Therefore, a more suitable method, such as the impressed current cathodic protection for tube protection, is required. Al-brass is the raw material of tubes for heat exchanger of a vessel where seawater is used for cooling the water. It has a high level of heat conductivity, excellent mechanical properties, and a high level of corrosion resistance, due to a cuprous oxide (Cu$_2$O) layer against th seawater. However, in actuality, it has been reported that Al-brass tubes for heat exchanger of a vessel can produce local corrosion, such as stress corrosion cracking (SCC). This paper studied the effect of impressed potential on the stress corrosion cracking of Al-brass for impressed current cathodic protection in 3.5% NaCl +0.1% NH$_4$OH solution, under flow by a constant displacement tester. Based on the test results, the latent time of SCC, stress corrosion crack propagation, and the dezincification phase of Al-brass are investigated.

• 한국염색가공학회지
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• 제18권6호
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• pp.80-87
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• 2006

Nowadays, interests of ultraviolet(UV) protection increased, since the UV dosage on the earth surface has increased over years. Overdose of UV can cause various skin, eye, and even DNA damages. Therefore, it is need to develop a proper mean to protect human skin and eye from UV radiation. In this study, the UV protective effect of green tea extract dyed fabrics with various fiber types were examined. Green tea has an active moiety called 'catechin' having benzene rings in its structure, which would exert a proper UV protective property. Green tea dyed fabrics showed the increase in UV protection, and silk showed the highest increase in UV protection (from 52.2% to 84.5% in UV-A, from 66.1% to 90% in UV-B). The order of UV-A protection increase is silk, wool, nylon and acrylic, PET, and cotton. The order of UV-B protection increase is silk nylon, wool, acrylic, cotton, and PET. In case of silk and nylon, the UV protection property gradually increased as the concentration of green tea extract increased. As a result, it was proven that green tea extract dyeing can improve UV protection property of dyed fabrics in environment-friendly and biocompatible manners.

• Corrosion Science and Technology
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• 제17권6호
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• pp.272-278
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• 2018

Reinforced concrete (RC) has been used as a construction material in various environments, such as airports, bridges, and ocean concrete structures, etc. Over time, however, rebar in the concrete is prone to corrosion from environmental forces and structural defects of the concrete. Cathodic protection (CP) was invented to prevent problems with corrosion and is widely used for different applications. Cathodic protection is divided into two types: sacrificial anode cathodic protection (SACP) and impressed current cathodic protection (ICCP). There are several limitations to the use of sacrificial anode cathodic protection in complex reinforced concrete structures, including concrete resistivity, throwing power of the CP, and environmental conditions. These limitations can affect the protection performance of SACP. Therefore, we used impressed current cathodic protection in our study. We tested Ti-Mesh, Ti-Rod, and Ti-Ribbon anodes in slab type reinforced concrete specimens. Electrochemical tests were conducted to confirm the impressed current cathodic protection performance under different environmental conditions.

• 임상간호연구
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• 제29권3호
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• pp.261-270
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• 2023

Purpose: This study aimed to identify the influence of knowledge of personal information protection law and nursing patient advocacy on practice of personal information protection among nurses. Methods: The subjects were 130 nurses who have worked for six months or more in the ward of the tertiary or general hospitals. Data were collected from February 20 to March 3, 2023. Results: Factors influencing practice of personal information protection were acting as an advocate (β=.32, p=.004), environmental and educational influences (β=.21, p=.040), knowledge of personal information protection law (β=.19, p=.013) and clinical experience for five years or more but less than ten years (β=.17, p=.036). The regression model showed an explanatory power of 34.0%. Conclusion: Acting as an advocate has the most effect on practice of personal information protection. To promote practice of personal information protection for nurses, it is necessary to provide education related to privacy protection and encourage nursing patient advocacy.

• Asian-Australasian Journal of Animal Sciences
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• 제19권8호
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• pp.1164-1173
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• 2006

Cellulase from Aspergillus niger, (${\alpha}$-amylase from Bacillus sp. and protease from Bacillus globigii were used as enzyme sources in this study to examine how their respective substrates protect them in two kinds of simulated gastrointestinal tract digesting processes. Avian total digest tract simulation test showed that filter paper, Avicel and cellulose resulted in 7.7, 6.4 and 7.4 times more activity than of unprotected cellulose, respectively. Protease with addition of casein, gelatin or soybean protein showed no significant protection response. Starch protected amylase to be 2.5 times activity of the unprotected one. Monogastric animal total tract digestion simulation test showed that filter paper, Avicel and cellulose resulted in 5.9, 9.0 and 8.8 times activity of unprotected cellulase, respectively. Casein, gelatin and soybean protein resulted in 1.2, 1.3 and 2.0 times activity of unprotected protease, respectively. Starch did not protect amylase activity in monogastric animal total tract simulation. Protection of mixed enzymes by substrates in two animal total tract simulation tests showed that filter paper in combination with soybean protein resulted in 1.5 times activity of unprotected cellulose, but all substrates tested showed no significant protection effect to protease. Soybean protein and starch added at the same time protected the amylase activity to be two times of the unprotected one. Test of non-purified substrate protection in two animal total digest tract simulation showed that cellulase activity increased as BSA (bovine serum albumin) concentration increased, with the highest activity to be 1.3 times of unprotected enzyme. However, BSA showed no significant protection effect to protease. Amylase activity increased to 1.5 times as BSA added more than 1.5% (w/v). Cellulase activity increased to 1.5 times as soybean hull was added higher than 1.5%. Amylase had a significant protection response only when soybean hull added up to 2%. Protease activity was not protected by soybean hull to any significant extent.