On the 28 September 2003, a blackout affected more than 56 million people across Italy and areas of Switzerland. Estimates vary for the number of fatalities that were directly related to the loss of power. 30,000 people were trapped on trains. Several hundred passengers were stranded on underground transit systems. There were significant knock-on effects across other critical infrastructures. M...

Mid-span compression joints in overhead transmission line conductors need to give not only reliability, but also electrical and mechanical properties equivalent the original conductor. The use of an inappropriate joint can lead disastrous consequences. An example this is complete blackout Sri Lankan power system October 2009 through inadequate size joint. This paper based on investigations whic...

One of the main concerns of investors is the evaluation of the return on investment, which is conducted using various models such as the CAPM (single-factor model), Fama-French three/five-factor models, and Roy and Shijin’s six-factor model and other models known as multi-factor models. Despite the widespread use of these models, their major drawbacks include sensitivity to unexpected changes, ...

Many blackouts occur with time scales that would permit emergency control by the operators. However, in order to perform this control the operators need to quickly know the state of system and implement timely, corrective control actions. This paper describes several visualization techniques that can be used to provide this information. Techniques discussed include the use of dynamically sized ...

The Johns Hopkins university will take part in a city-wide blackout from 9:45 till A0:00tonight. Headed by Chief Warden. .Dr...Sidney Painter, wardens, assistant wardens, and first aid representatives for this and other blackouts have been appointed by a faculty committee on Campus Protection, which has been functioning since December 15. In addition, student volunteers in the dormitories are t...

in this work, we study a unilateral contact problem with non local friction of coulombbetween a locking material and a rigid foundation. in the first step , we present the mathematicalmodel for a static process, we establish the variational formulation in the form of a variationalinequality and we prove the existence and uniqueness of the solution. in the second step, usingthe penalty method we...

This study investigates the stock price reaction of electric energy utility firms to 2003 blackout in Northeast USA and if market was able identify responsible firm. Therefore, we employ event methodology select a sample US-based firms. Although it took commission almost eight months name firm for blackout, investors punished FirstEnergy only two trading days after - were right, as later turned...