Enhancing Cyber-Resiliency of DER-based SmartGrid: A Survey

The rapid development of information and communications technology has enabled the use of digital-controlled and software-driven distributed energy resources (DERs) to improve the flexibility and efficiency of power supply, and support grid operations. However, this evolution also exposes geographically-dispersed DERs to cyber threats, including hardware and software vulnerabilities, communication issues, and personnel errors, etc. Therefore, enhancing the cyber-resiliency of DER-based smart grid - the ability to survive successful cyber intrusions - is becoming increasingly vital and has garnered significant attention from both industry and academia. In this survey, we aim to provide a systematical and comprehensive review regarding the cyber-resiliency enhancement (CRE) of DER-based smart grid. Firstly, an integrated threat modeling method is tailored for the hierarchical DER-based smart grid with special emphasis on vulnerability identification and impact analysis. Then, the defense-in-depth strategies encompassing prevention, detection, mitigation, and recovery are comprehensively surveyed, systematically classified, and rigorously compared. A CRE framework is subsequently proposed to incorporate the five key resiliency enablers. Finally, challenges and future directions are discussed in details. The overall aim of this survey is to demonstrate the development trend of CRE methods and motivate further efforts to improve the cyber-resiliency of DER-based smart grid.Comment: Submitted to IEEE Transactions on Smart Grid for Publication Consideratio

ISPs’ Duty of Care in Copyright Infringement

This dissertation discussed the ISP’s duty of care in copyright infringement. The duty hereon refers to the ISP’s legal obligation to take care of the influence of the provided service on the protection of others’ copyright. The duty is divided into three sub-categories: the duty of general prevention, the duty of assistance in specific infringement and the duty to deal with repeated infringement. In order to provide a comprehensive and systematic explanation of the duty, four main aspects are logically discussed: the background, the status quo, the justification, and the specific application. In addition to the traditional mechanism of notice and take down, it is asserted that the ISP should play a more active role in dealing with the users’ online infringement. In particular, the ISP should be imposed on a legal obligation to keep neutral actually and to have general control of the infringing activities through their service. Thereby, the application of the filtering technologies should not be refused as a whole, but should be limited from the perspective of the purpose, the scope as well as the efficacy. Accordingly, the fundamental orientation of the Proposal for a Directive of the European Parliament and of the Council on Copyright in the Digital Single Market is supported by this dissertation. At the same time, it is recommended to adopt the application of the duty of general prevention on the ISPs providing platforms instead of recognizing the service itself as communicating to the public

Open Education and the Creative Economy: Global Perspectives and Comparative Analysis

This dissertation is to deal the issues of open education, creative economies, higher education. It also compares the performances in these aspects among different countries. The conception of the ???creative economy??? develops within the context of ???global neoliberalism??? and ???knowledge economy???. These three notions are all concerned with economic development. In addition, the creative economy emphasizes the importance of creativity and cultural commodities in cultural and economical development. Open education adapts the openness concept in education and utilizes information communication technology (ICT) to enhance openness. Open education encourages sharing educational opportunities and providing resources to a greater number of participants. The idea of open knowledge in the creative economy and open education implies the crossing of knowledge boundaries and collective knowledge creation. With its advantageous conditions, higher education can play an important role in the development of open knowledge. From a global perspective, this dissertation adopts a statistical ???comparison structure??? (also known as a co-plot) to discover the categories and features of the creative economy and open education among countries and regions. Knowledge Assessment Methodology (KAM) data from the World Bank is analyzed and compared internationally. The co-plot shows that there are differences in certain variables among countries and regions. High GDP does not necessarily lead to a highly developed creative economy, but well collective development of some particular variables can contribute to the development of the creative economy in some countries. The conclusion focuses on: (a) open education and its relationship to open knowledge and creative economy, (b) the role and significance of open education, (c) the role of higher education in creative economy and open society, and (d) the results of comparison structure (co-plot) and alternative models. This dissertation makes recommendation concerning the aspects of policy-making and higher education development, as well as future researches

Time-Sensitive Networking for Industrial Automation: Challenges, Opportunities, and Directions

With the introduction of Cyber-Physical Systems (CPS) and Internet of Things (IoT) into industrial applications, industrial automation is undergoing tremendous change, especially with regard to improving efficiency and reducing the cost of products. Industrial automation applications are often required to transmit time- and safety-critical data to monitor and control industrial processes, especially for critical control systems. There are a number of solutions to meet these requirements (e.g., priority-based real-time schedules and closed-loop feedback control systems). However, due to their different processing capabilities (e.g., in the end devices and network switches), different vendors may come out with distinct solutions, and this makes the large-scale integration of devices from different vendors difficult or impossible. IEEE 802.1 Time-Sensitive Networking (TSN) is a standardization group formed to enhance and optimize the IEEE 802.1 network standards, especially for Ethernet-based networks. These solutions can be evolved and adapted into a cross-industry scenario, such as a large-scale distributed industrial plant, which requires multiple industrial entities working collaboratively. This paper provides a comprehensive review on the current advances in TSN standards for industrial automation. We present the state-of-the-art IEEE TSN standards and discuss the opportunities and challenges when integrating each protocol into the industry domains. Finally, we discuss some promising research about applying the TSN technology to industrial automation applications

Application networking for pervasive content delivery

Ph.DDOCTOR OF PHILOSOPH

Management, Technology and Learning for Individuals, Organisations and Society in Turbulent Environments

This book presents the collection of fifty two papers which were presented on the First International Conference on BUSINESS SUSTAINABILITY ’08 - Management, Technology and Learning for Individuals, Organisations and Society in Turbulent Environments, held in Ofir, Portugal, from 25th to 27th of June, 2008. The main motive of the meeting was the growing awareness of the importance of the sustainability issue. This importance had emerged from the growing uncertainty of the market behaviour that leads to the characterization of the market, i.e. environment, as turbulent. Actually, the characterization of the environment as uncertain and turbulent reflects the fact that the traditional technocratic and/or socio-technical approaches cannot effectively and efficiently lead with the present situation. In other words, the rise of the sustainability issue means the quest for new instruments to deal with uncertainty and/or turbulence. The sustainability issue has a complex nature and solutions are sought in a wide range of domains and instruments to achieve and manage it. The domains range from environmental sustainability (referring to natural environment) through organisational and business sustainability towards social sustainability. Concerning the instruments for sustainability, they range from traditional engineering and management methodologies towards “soft” instruments such as knowledge, learning, creativity. The papers in this book address virtually whole sustainability problems space in a greater or lesser extent. However, although the uncertainty and/or turbulence, or in other words the dynamic properties, come from coupling of management, technology, learning, individuals, organisations and society, meaning that everything is at the same time effect and cause, we wanted to put the emphasis on business with the intention to address primarily the companies and their businesses. From this reason, the main title of the book is “Business Sustainability” but with the approach of coupling Management, Technology and Learning for individuals, organisations and society in Turbulent Environments. Concerning the First International Conference on BUSINESS SUSTAINABILITY, its particularity was that it had served primarily as a learning environment in which the papers published in this book were the ground for further individual and collective growth in understanding and perception of sustainability and capacity for building new instruments for business sustainability. In that respect, the methodology of the conference work was basically dialogical, meaning promoting dialog on the papers, but also including formal paper presentations. In this way, the conference presented a rich space for satisfying different authors’ and participants’ needs. Additionally, promoting the widest and global learning environment and participativeness, the Conference Organisation provided the broadcasting over Internet of the Conference sessions, dialogical and formal presentations, for all authors’ and participants’ institutions, as an innovative Conference feature. In these terms, this book could also be understood as a complementary instrument to the Conference authors’ and participants’, but also to the wider readerships’ interested in the sustainability issues. The book brought together 97 authors from 10 countries, namely from Australia, Finland, France, Germany, Ireland, Portugal, Russia, Serbia, Sweden and United Kingdom. The authors “ranged” from senior and renowned scientists to young researchers providing a rich and learning environment. At the end, the editors hope and would like that this book will be useful, meeting the expectation of the authors and wider readership and serving for enhancing the individual and collective learning, and to incentive further scientific development and creation of new papers. Also, the editors would use this opportunity to announce the intention to continue with new editions of the conference and subsequent editions of accompanying books on the subject of BUSINESS SUSTAINABILITY, the second of which is planned for year 2011.info:eu-repo/semantics/publishedVersio

Market acceptance of cloud computing: An analysis of market structure, price models and service requirements

Diese Arbeit betrachtet menschliches Verhalten auf elektronischen Märkten. In diesem Zusammenhang wurden zwei Experimente durchgeführt, die das Auction Fever in Holländischen Auktionen sowie das menschliche Risikoverhalten im sehr hohen Wahrscheinlichkeitsbereich näher untersuchen. Im Experiment zum menschlichen Risikoverhalten wurde speziell die Bewertung hoher Gewinnwahrscheinlichkeiten durch die Teilnehmer untersucht. Hinsichtlich des Auction Fever wurde ein Referenzexperiment beschrieben, kritisiert und auf Basis dieser Kritik ein Folgeexperiment durchgeführt. Hierbei wurde beobachtet, dass Menschen ein vorher gesetztes Limit nicht konstant unterbieten sondern auch teilweise überbieten. Es wurden außerdem Einflussfaktoren für diesen emotionalen Effekt erarbeitet. --Verhandlungstheorie,Experiment

Wireless Sensor Networks for Monitoring Applications

Wireless Sensor Networks (WSNs) are getting wide-spread attention since they became easily accessible with their low costs. One of the key elements of WSNs is distributed sensing. When the precise location of a signal of interest is unknown across the monitored region, distributing many sensors randomly/uniformly may yield with a better representation of the monitored random process than a traditional sensor deployment. In a typical WSN application the data sensed by nodes is usually sent to one (or more) central device, denoted as sink, which collects the information and can either act as a gateway towards other networks (e.g. Internet), where data can be stored, or be processed in order to command the actuators to perform special tasks. In such a scenario, a dense sensor deployment may create bottlenecks when many nodes competing to access the channel. Even though there are mitigation methods on the channel access, concurrent (parallel) transmissions may occur. In this study, always on the scope of monitoring applications, the involved development progress of two industrial projects with dense sensor deployments (eDIANA Project funded by European Commission and Centrale Adritica Project funded by Coop Italy) and the measurement results coming from several different test-beds evoked the necessity of a mathematical analysis on concurrent transmissions. To the best of our knowledge, in the literature there is no mathematical analysis of concurrent transmission in 2.4 GHz PHY of IEEE 802.15.4. In the thesis, experience stories of eDIANA and Centrale Adriatica Projects and a mathematical analysis of concurrent transmissions starting from O-QPSK chip demodulation to the packet reception rate with several different types of theoretical demodulators, are presented. There is a very good agreement between the measurements so far in the literature and the mathematical analysis