Impact Assessment of Hypothesized Cyberattacks on Interconnected Bulk Power Systems

The first-ever Ukraine cyberattack on power grid has proven its devastation by hacking into their critical cyber assets. With administrative privileges accessing substation networks/local control centers, one intelligent way of coordinated cyberattacks is to execute a series of disruptive switching executions on multiple substations using compromised supervisory control and data acquisition (SCADA) systems. These actions can cause significant impacts to an interconnected power grid. Unlike the previous power blackouts, such high-impact initiating events can aggravate operating conditions, initiating instability that may lead to system-wide cascading failure. A systemic evaluation of "nightmare" scenarios is highly desirable for asset owners to manage and prioritize the maintenance and investment in protecting their cyberinfrastructure. This survey paper is a conceptual expansion of real-time monitoring, anomaly detection, impact analyses, and mitigation (RAIM) framework that emphasizes on the resulting impacts, both on steady-state and dynamic aspects of power system stability. Hypothetically, we associate the combinatorial analyses of steady state on substations/components outages and dynamics of the sequential switching orders as part of the permutation. The expanded framework includes (1) critical/noncritical combination verification, (2) cascade confirmation, and (3) combination re-evaluation. This paper ends with a discussion of the open issues for metrics and future design pertaining the impact quantification of cyber-related contingencies

System description document for the Anthrobot-2: A dexterous robot hand

The Anthrobot-2 is an anatomically correct, fully functioning robot hand. The number of fingers, the proportions of the links, the placement and motion of the thumb, and the shape of the palm follow those of the human hand. Each of the finger and thumb joints are servo-controlled. The Anthrobot-2 also includes a two-degree-of-freedom wrist. The entire package, including wrist, hand, and actuators, will mount on the ends of a variety of industrial manipulators. A patent has been applied for on the design. The Anthrobot-2 will be useful in tasks where dexterous manipulation or telemanipulation are required

X_System

The X_System makes the playing, writing, and learning of music – even when using unconventional tunings – more intuitive, more logical, more expressive, and better sounding. The X_System allows for: • different temperaments to be chosen at the flick of a switch; • tunings to be dynamically altered at the push of a lever; • the use of a special hexagonal button-field that allows for any given interval or chord always to have the same shape on that button-field; • consonant chords to have their consonance maximised, whatever the tuning actually chosen; • radical changes to be made to the timbral character of tones using a minimal number of controls; • a choice of keyboard mappings, which enable for the balance between number of intervals and octaves to be altered

Management of information through an interactive voice response system the prospect of religious domain

This paper explores the potential of using an interactive voice response system to maange information in institutions of religious domain. We first explain the terminologies involved such as an interactive voice response system, computer telephony integration, information management, and religious domain. Then we look at how information is managed through an interactive voice response system. IVR application supports two kinds of communications, i.e. real time communication and message type communication. Users could make either a real time communication or a message type communication as needed. Real time communication includes accessing databases in order to get instant and updated information within the real time during the call is made through the system. Message type communication includes voice mail application using telephone recording. The suitability of using interactive voice response for institution of religious domain is studied, and we also describe a few options for the implementation of the system

The British model in Britain: failing slowly

In 1990, Britain became the first developed country to reorganise its electricity industry to run on competitive lines. The British reforms are widely regarded as the benchmark for other reforms and the model used provides the basis for reforms of electricity and other network industries around the world. The factors behind this perception of success are major reductions in the real price of electricity with no apparent reduction in service quality. This paper examines whether the high reputation of the British reforms is justified and whether these good results can be maintained. It concludes that the reputation is not justified and that serious problems are beginning to emerge. The central question that must be asked is: have the British reforms resulted in the creation of efficient markets at the wholesale and retail level? On this criterion, the reforms have failed. The wholesale market remains illusory. Obscure long-term contracts, privileged access to the market and self-dealing within integrated generator/retailers have dominated wholesale purchases leaving the spot markets with minimal liquidity and unreliable prices. The failure to develop an efficient wholesale market places the onus on consumers to impose competitive forces on electricity companies by switching regularly. Small consumers will not do this and they are paying too much for their power. For the future, there is a serious risk that the electricity industry will become a weakly regulated oligopoly with a veneer of competition