Impact of Cyber-Security Issues on Smart Grid

Greater complexity and interconnectivity across systems embracing Smart Grid technologies has meant that cyber-security issues have attracted significant attention. This paper describes pertinent cyber-security requirements, in particular cyber attacks and countermeasures which are critical for reliable Smart Grid operation. Relevant published literature is presented for critical aspects of Smart Grid cyber-security, such as vulnerability, interdependency, simulation, and standards. Furthermore, a preliminary study case is given which demonstrates the impact of a cyber attack which violates the integrity of data on the load management of real power system. Finally, the paper proposes future work plan which focuses on applying intrusion detection and prevention technology to address cyber-security issues. This paper also provides an overview of Smart Grid cyber-security with reference to related cross-disciplinary research topics.

Frequency Stability Issues for Islanded Power Systems

Frequency stability has not necessarily been a major problem for the majority of power systems in the past. However, for economic and environmental reasons, power systems are now operated closer to stability limits to maximise the use of the existing networks. Therefore, introduction of new, more efficient and renewable generation technologies, and their effect on the power system must be fully understood if a reliable and secure electricity supply is to be maintained. Using the Northern Ireland, and interconnected Republic of Ireland electricity networks as a case study, this paper addresses some of the issues regarding integration and modelling of combined cycle gas turbines (CCGT), and wind turbine generator (WTG) technology on a small islanded power system.

Contemporary environmental issues of landfill leachate: assessment & remedies

Landfills are the primary option for waste disposal all over the world. Most of the landfill sites across the world are old and are not engineered to prevent contamination of the underlying soil and groundwater by the toxic leachate. The pollutants from landfill leachate have accumulative and detrimental effect on the ecology and food chains leading to carcinogenic effects, acute toxicity and genotoxicity among human beings. Management of this highly toxic leachate presents a challenging problem to the regulatory authorities who have set specific regulations regarding maximum limits of contaminants in treated leachate prior to disposal into the environment to ensure minimal environmental impact. There are different stages of leachate management such as monitoring of its formation and flow into the environment, identification of hazards associated with it and its treatment prior to disposal into the environment. This review focuses on: (i) leachate composition, (ii) Plume migration, (iii) Contaminant fate, (iv) Leachate plume monitoring techniques, (v) Risk assessment techniques, Hazard rating methods, mathematical modeling, and (vi) Recent innovations in leachate treatment technologies. However, due to seasonal fluctuations in leachate composition, flow rate and leachate volume, the management approaches cannot be stereotyped. Every scenario is unique and the strategy will vary accordingly. This paper lays out the choices for making an educated guess leading to the best management option.

Truth Recovery and Transitional Justice: Deferring human rights issues

This book investigates why some societies defer the solution of transitional justice issues, such as the disappeared/missing, even after successful democratic consolidation. It also explains why the same societies finally decide to deal with these human rights issues. In short, it considers the interesting and understudied phenomenon of post-transitional justice. The prolonged silences in Spain, Cyprus and Greece contradict the experience of other countries -- such as South Africa, Bosnia, and Guatemala -- where truth recovery for disappeared/missing persons was a central element of the transition to peace and democracy. Despite democratization, the exhumation of mass graves containing the victims from the violence in Cyprus (1963-1974) and the Spanish civil war (1936-1939) was delayed until the early 2000s, when both countries suddenly decided to revisit the past. Cyprus and Spain are not alone: this is an increasing trend among countries trying to come to terms with past violence. Interestingly, despite similar background conditions, Greece is resisting the trend, challenging both theory and regional experience. Truth Recovery and Transitional Justice considers three interrelated issues. First, what factors can explain prolonged silence on the issue of missing persons in some transitional settings? Second, which processes can address the occasional yet puzzling transformation of victims’ groups from opponents of truth recovery to vocal pro-reconciliation pressure groups? Third, under which conditions is it better to tie victims’ rights to an overall political settlement? The book looks at Spain and Cyprus to show how they have attempted to bring closure to deep trauma by exhuming and identifying their missing, albeit under considerably different conditions. It then probes the generalizability of the conclusions on Spain and Cyprus by looking at the Greek experience; oddly, despite similar background conditions, Greece remains resistant to post-transitional justice norms. Interestingly, each case study takes a different approach to transitional justice.

Using debate to teach pharmacy students about ethical issues

Objective. To create, implement, and evaluate debate as a method of teaching pharmacy undergraduate students about ethical issues.

Design. Debate workshops with 5 hours of contact with student peers and facilitators and 5 hours of self-study were developed for second-year pharmacy students. Student development of various skills and understanding of the topic were assessed by staff members and student peers.

Assessment. One hundred fifty students completed the workshops. The mean score for debating was 25.9 out of 30, with scores ranging from 23.2 to 28.7. Seventy percent of students agreed that the debates were a useful teaching method in the degree program.

Conclusion. A series of workshops using debates effectively delivered course content on ethical issues and resulted in pharmacy students developing skills such as teamwork, peer assessment, communication, and critical evaluation. These findings suggest that pharmacy students respond favorably to a program using debates as a teaching tool.