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

Cyber Security and Critical Infrastructures 2nd Volume

The second volume of the book contains the manuscripts that were accepted for publication in the MDPI Special Topic "Cyber Security and Critical Infrastructure" after a rigorous peer-review process. Authors from academia, government and industry contributed their innovative solutions, consistent with the interdisciplinary nature of cybersecurity. The book contains 16 articles, including an editorial that explains the current challenges, innovative solutions and real-world experiences that include critical infrastructure and 15 original papers that present state-of-the-art innovative solutions to attacks on critical systems

A study on urban competitiveness in China.

So Man Shan.Thesis submitted in: August 2003.Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.Includes bibliographical references (leaves 176-187).Abstracts in English and Chinese.ACKNOWLEDGEMENTS --- p.iiABSTRACT --- p.iiiTABLE OF CONTENTS --- p.viLIST OF TABLES --- p.ixLIST OF FIGURES --- p.xChapter CHAPTER 1 --- INTRODUCTIONChapter 1.1 --- Background of the Study --- p.1Chapter 1.2 --- Objectives of the Study --- p.5Chapter 1.3 --- Significance of the Study --- p.5Chapter 1.4 --- Scope of the Study --- p.6Chapter 1.5 --- Organization of the Thesis --- p.7Chapter CHAPTER 2 --- CONCEPT OF URBAN COMPETITIVENESSChapter 2.1 --- Competitiveness: An Evolving Concept --- p.8Chapter 2.2 --- Review of Research on Urban Competitiveness --- p.10Chapter CHAPTER 3 --- URBANIZATION AND URBAN TRANSFORMATION IN POST REFORM CHINAChapter 3.1 --- Introduction --- p.21Chapter 3.2 --- Chinese Urban System --- p.22Chapter 3.3 --- Hukou System --- p.25Chapter 3.4 --- Urbanization Process and Patterns in Post-reform China --- p.27Chapter 3.5 --- Urban Transformation in Post-reform China --- p.30Chapter CHAPTER 4 --- METHODS TO MEASURE URBAN COMPETITIVENESSChapter 4.1 --- Introduction --- p.36Chapter 4.2 --- System of Indicators --- p.36Chapter 4.3 --- Weighting Methods --- p.53Chapter 4.4 --- Comparison and Selection of Weighting Methods --- p.60Chapter 4.5 --- Statistical Data --- p.64Chapter 4.6 --- Procedures to Compute Urban Competitiveness Index --- p.67Chapter CHAPTER 5 --- ANALYSIS OF URBAN COMPETITIVENESSChapter 5.1 --- Introduction --- p.73Chapter 5.2 --- Economic Competitiveness --- p.74Chapter 5.3 --- Social Competitiveness --- p.85Chapter 5.4 --- Environmental Competitiveness --- p.98Chapter 5.5 --- Urban Competitiveness --- p.105Chapter 5.6 --- Comparing Single Indicators with Urban Competitiveness --- p.114Chapter CHAPTER 6 --- CONCLUSIONChapter 6.1 --- Major Points and Findings --- p.119Chapter 6.2 --- Limitations --- p.127Chapter 6.3 --- Suggestion for Further Research --- p.129APPENDIX A --- p.130APPENDIX B --- p.136APPENDIX C --- p.144APPENDIX D --- p.152APPENDIX E --- p.160APPENDIX F --- p.168REFERENCES --- p.17

Application of [Ba. sub. 0.5][Sr. sub. 0.5] Ti [O. sub. 3](Bst) Film Doped with 0%, 2%, 4% and 6% Concentrations of Ru [O. sub. 2] as an Arduino Nano-Based Bad Breath Sensor

Ba0.5Sr0.5TiO3 (BST) film doped with variations in RuO2 concentration (0%, 2%, 4%, and 6%) has been successfully grown on a type-p silicon substrate (100) using the chemical solution deposition (CSD) method and spin-coating at a speed of 3000 rpm for 30 s. The film on the substrate was then heated at 850 °C for 15 h. The sensitivity of BST film + RuO2 variations as a gas sensor were characterized. The sensitivity characterization was assisted by various electronic circuitry with the purpose of producing a sensor that is very sensitive to gas. The responses from the BST film + RuO2 variation were varied, depending on the concentration of the RuO2 dope. BST film doped with 6% RuO2 had a very good response to halitosis gases; therefore, this film was applied as the Arduino-Nano-based bad-breath detecting sensor. Before it was integrated with the microcontroller, the voltage output of the BST film was amplified using an op-amp circuit to make the voltage output from the BST film readable to the microcontroller. The changes in the voltage response were then shown on the prototype display. If the voltage output was ≤12.9 mV, the display would read “bad breath”. If the voltage output >42.1 mV, the display would read “fragrant”. If 12.9 mV < voltage output ≤ 42.1 mV, the display would read “normal”

Queensland University of Technology: Annual Report 2009

Our annual report provides an evaluation of our performance and achievements during the previous year, measured against our goals and strategic plans. It documents our performance in the three key areas of: teaching and learning research community service. The report includes a summary of financial performance and a copy of our audited accounts

Sustainable Use of Soils and Water: The Role of Environmental Land Use Conflicts

This book on the sustainable use of soils and water addressed a variety of issues related to the utopian desire for environmental sustainability and the deviations from this scene observed in the real world. Competing interests for land are frequently a factor in land degradation, especially where the adopted land uses do not conform with the land capability (the natural use of soil). The concerns of researchers about these matters are presented in the articles comprising this Special Issue book. Various approaches were used to assess the (im)balance between economic profit and environmental conservation in various regions, in addition to potential routes to bring landscapes back to a sustainable status being disclosed

Development Of The Internet Of Things (IoT)-Based Robot Trainer As A Learning Media In Remote Robotic Practice

Vocational education is higher education that must be in harmony with the world of work. The development of the world of work today is following the demands of the Industrial Revolution 4.0, namely the Internet of Things (IoT), big data, augmented reality, cyber security, artificial intelligence, additive manufacturing, simulation, system integration, and cloud computing. Prosser's theory says that effective vocational education can only be provided which training tasks are carried out in the same way as tools and machines in the specified workplace, so that learning carried out in vocational education must adapt to the development of industry 4.0. The research aims to establish IoT-based robotics learning media and produce valid, practical, and effective robotics trainer media. The research method used is Research and Development with a 4D development model theory. The model elaborates on defining, designing, developing, and distributing. The definition is based on the learning achievement of practicum material by the competence of robotics practice. The population in this study were students of the Engineering Faculty of Universitas Negeri Makassar. The research samples needed include a one-to-one trial consisting of 3 people, a small group trial of 5 people, and a large group trial of 19 people. The model design uses a nonequivalent quasi-experimental. The research data analysis technique uses descriptive analysis of percentages that describe the development results, validator responses, outcomes of one-to-one trials, small group trials, and large group trials. This study uses two expert validators in electronics, microcontrollers, robotics, and artificial intelligence. The results of the validity data analysis stated that the IoT-based robotics learning media had been declared feasible to be used. The results of the effectiveness of media products based on the pretest and posttest results show that the average value of students before using the media trainer is 43.8, increasing to 87.1 after using the IoT-based robotics trainer media. The research data analysis and discussion conclude that the IoT-based robotics learning media developed are declared valid/feasible, practical, and effective in its use

Evaluating the sustainability of urban agriculture projects

Evaluating the sustainability of urban agriculture projects. 5. International Symposium for Farming Systems Design (AGRO2015