• Title/Summary/Keyword: protection

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A comparison study of input ESD protection schemes utilizing NMOS transistor and thyristor protection devices (NMOS 트랜지스터와 싸이리스터 보호용 소자를 이용하는 입력 ESD 보호방식의 비교 연구)

  • Choi, Jin-Young
    • Journal of IKEEE
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    • v.13 no.1
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    • pp.19-29
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    • 2009
  • For two input ESD protection schemes utilizing the NMOS protection device or the lvtr_thyristor protection device, which is suitable for high-frequency CMOS ICs, we attempt an in-depth comparison study on the HBM ESD protection level in terms of lattice heating inside the protection devices and the peak voltage applied to the gate oxides in the input buffer through DC, mixed-mode transient, and AC analyses utilizing the 2-dimensional device simulator. For this purpose, we suggest a method for the equivalent circuit modeling of the input HBM test environment for the CMOS chip equipped with the input ESD protection circuit. And by executing mixed-mode simulations including up to four protection devices and analyzing the results for five different test modes, we attempt a detailed analysis on the problems which can be occurred in a real HBM test. In this procedure, we explain about the strength and weakness of the two protection schemes as an input protection circuit for high-frequency ICs, and suggest guidelines relating to the design of the protection devices.

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Outdoor Workers' Use of Sun Protection at Work and Leisure

  • Peters, Cheryl E.;Koehoorn, Mieke W.;Demers, Paul A.;Nicol, Anne-Marie;Kalia, Sunil
    • Safety and Health at Work
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    • v.7 no.3
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    • pp.208-212
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    • 2016
  • Background: Outdoor workers are at risk of high ultraviolet radiation exposure, and may have difficulty using sun protection. The objectives were to determine the prevalence of sun protection behaviors in a sample of outdoor construction workers, and to assess which factors predict better sun protection practices. Methods: Participants were recruited via construction unions. Workers answered a questionnaire on demographics, skin cancer risk, sun protection behaviors, and job. Sun protection behavior scores (from questions on sunscreen use, sleeved shirt, hat, shade seeking, sunglasses) were calculated by converting Likert-scale answers to scores from 0 to 4, and taking the mean (separately for work and leisure). Determinants of sun protection behavior scores were examined for work and leisure using generalized linear models. Results: Seventy-seven workers had complete questionnaire data (participation 98%). Sun protection behaviors used most often were hats (79% often/always) and sleeved shirts (82% often/always); least prevalent were shade-seeking (8% often/always) and sunscreen (29% often/always). For both work and leisure scores, the strongest predictor was skin type, with fairer-skinned individuals having higher sun protection behavior scores. Workers had higher scores at work than on weekends. Workplaces that required hats and sleeved shirts for safety purposes had higher protection behavior scores. Conclusion: This high-participation rate cohort helps characterize sun protection behaviors among outdoor workers. Workers practiced better sun protection at work than on weekends, suggesting that workplace policies supportive of sun protection could be useful for skin cancer prevention in the construction industry.

The Structural Relationships among Information Security Threat Factors and Information Protection Behavior of the FinTech Services: Focus on Theoretical Perspectives of Technology Threat Avoidance and Health Protective Behaviors (핀테크(FinTech) 서비스의 정보보안 위협요인과 개인정보보호행위와의 구조적 관계에 관한 연구: 기술위협회피와 건강행동이론 관점에서)

  • Bae, Jae Kwon
    • The Journal of Information Systems
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    • v.26 no.3
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    • pp.313-337
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    • 2017
  • Purpose Financial technology, also known as FinTech, is conceptually defined as a new type of financial service which is combined with information technology and other traditional financial services like payments, investments, financing, insurance, asset management and so on. Most of the studies on FinTech services have been conducted from the viewpoint of technical issues or legal and institutional studies, and few studies are conducted from the health belief perspectives and security behavior approaches. In this regard, this study suggest an extended information protection behavior model. Design/Methodology/Approach The Health Belief Model (HBM), the Protection Motivation Theory (PMT), and the Technology Threat Avoidance Theory (TTAT) were employed to identify constructs relevant to information protection behavior of FinTech services. A new extended information protection behavior model in which the influence factors of information protection behavior (i.e., perceived susceptibility, perceived severity, perceived benefits, perceived barriers, perceived self-efficacy, subjective norms) affect perceived threats and perceived responsiveness positively, leading to information protection behavior of FinTech users eventually. This study developed an extended information protection behavior model to explain the protection behavior intention in FinTech users and collected 272 survey responses from the mobile users who had experiences with such mobile payments and FinTech services. Findings The finding of this study suggests that the influence factors of information protection behavior affect perceived threats and perceived responsiveness positively, and information protection behavior of FinTech users as well.

A Study on the Protection of Intellectual Property Rights of Contents upon Internet (인터넷상에서 콘텐츠의 지적재산권 보호에 관한 연구)

  • 장병윤
    • Journal of Arbitration Studies
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    • v.12 no.2
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    • pp.373-418
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    • 2003
  • This is to study intellectual property(IP) protection of contents which is related with transactions upon internet network. Issues of electronic transaction and infringement cases were studied and analyzed for intellectual property protection. Upon those study, utilization and activation of contents, dispute settlement and method of IP protection were suggested. To achieve this study purpose, it consists of 5 chapters. In chapter 1 introduction, it's mentioned purpose, scope, and method of this study. In chapter 2, outline of contents and e-Commerce, and subject of IP protection upon internet were studied. In chapter 3, issues and dispute factors of IP were discussed and infringement cases were analyzed. It found out that infringements would be variety and complex due to technology rapidly changes. In chapter 4, IP protection plan and responsibility of webmaster were studied and emphasized to protect IP upon Internet. Also, protection against infringement and method of dispute resolution were studied and suggested the method. In this study, the protection plan was suggested because IP protection of contents in internet would be many cases upon internet technology. It found out that technology was important for business expansion of contents, e-Commerce and IP protection, and to enact a law related with IP. In chapter 5 conclusion, this study was summarized and further research was suggested. This study results are 1. IP related laws had better enact or revise to meet internet technology changes for IP protection timely, 2. local laws are to change and develop to harmony with international norm and trends, 3. consolidation of IP related laws for unification of IP statement should be incurred to avoid unnecessary energy of legislation and not to create dispute matters. That's also for customer satisfaction. In conclusion, not to incur ADR and for IP protection of contents, IP related laws would be promptly made or revised, according to technology change trends and for international harmony, That's for internet related industry development and customer satisfaction.

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Environment Assessing for Airborne Radioactive Particulate Release-introduction of Methods in IAEA Safety Report Series No.19

  • Meng, Dan;Yang, Liu;Shen, Fu;Yang, Yi;Ma, Yinghao;Ma, Tao;Zhang, Zhilong;Fu, Cuiming
    • Journal of Radiation Protection and Research
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    • v.41 no.4
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    • pp.409-417
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    • 2016
  • Background: Airborne radioactive particulate in many important nuclear facilities (particularly nuclear power plants) will have a strong impact on the relative public dose if they are released into the corresponding environment traversing the stack or vents. The radiation protection researchers have regarded the relative environment assessing and estimation of public doses. And the model of assessing impact of discharges radioactive substance to the environment have been recommended by many international organizations (e.g. IAEA) with the nuclear energy safety and radiation protection. Materials and Methods: This paper introduced the generic models that were suggested by International Atomic Energy Agency (IAEA), for use in assessing the impact of discharges of radioactive substances to the environment (e.g. IAEA Safety Report Series No.19). Results and Discussion: The writers of this paper, based on the recommend methods, assessed the discharge limits in some airborne radioactive substances discharging standards. The reasons that IAEA method are introduced are mainly the following considerations: IAEA is one of international organizations with some authorities in the nuclear energy safety and radiation protection; and, more important, the recommend modes are operational methods rather than the methods having little operations such as that have used by some researchers. Conclusion: It is wish that the introduced methods in this paper can be referenced in draft or revise of the standards related to discharges of radioactive substances to the environment.