نتایج جستجو برای: blackout

تعداد نتایج: 1044  

2005
John F. O'Mahony

This study examined the proposition that the experience of alcoholic blackouts is related to other indices of cerebral involvement in the alcoholic process. In particular it was suggested that those who experience alcoholic blackouts would also show signs of the effects of alcoholic damage in the form of lower scores on cognitive functions vulnerable to the effects of long-term alcohol abuse. W...

2011
Yahel Ben-David Albert Kim

We present Robin, an attack-resilient microblogging service, designed to provide citizens of an oppressive regime, the ability to disseminate messages during periods of complete communication blackouts imposed by the government. Using a delaytolerant network comprised solely of smart-phones, messages are relayed opportunistically among citizens. Our key contribution is a novel mechanism to prot...

2004
Ian Dobson Benjamin A. Carreras Vickie E. Lynch David E. Newman

We give a comprehensive account of a complex systems approach to large blackouts caused by cascading failure. Instead of looking at the details of particular blackouts, we study the statistics, dynamics and risk of series of blackouts with approximate global models. North American blackout data suggests that the frequency of large blackouts is governed by a power law. This result is consistent ...

Journal: :J. High Speed Networks 2004
Sudebkumar Prasant Pal Rajiv Ranjan Suman G. Sudha Anil Kumar Ruchi Malhotra

In this paper we propose a new scheme for scalable video services across the Internet. We envisage the future Internet to be very video intensive where large video and multimedia files (or portions of files) would be accessed over the entire network by a large number of users very frequently. Such large sets of data would contribute to most of the traffic. Quality of service guarantees would th...

2006
Kevin R. Wierzbicki

Cascading blackouts on a bulk power transmission system are potentially catastrophic events with a large impact on society characterized by a sequence of line trips and load shed. One spectacular example of a cascading blackout is the August 2003 blackout in North America that affected 50 million people. We propose using branching processes to model the line tripping and load shed behavior of c...

2016
Jiamin Chen Kai Yuan Linfang Shen Xiaohua Deng Lujun Hong Ming Yao

Communication ‘blackout’ is a big challenge for modern space engineering. In the recent decade, the terahertz (THz) technology is believed to be an effective solution for the ‘blackout’ problem. Many research works about the transmission of THz waves in plasma slabs have been carried out. According to those works, the radio attenuation of THz waves in plasma slabs strongly depends on thickness ...

2009
Minkwan Kim Michael Keidar Iain D. Boyd

During hypersonic, the shock heated air generates a weakly ionized plasma layer around a vehicle. Since the created plasma layer has a high plasma number density, the vehicle has a communication problem known as radio blackout. Solving radio blackout is an important issue for safety of the vehicle, catastrophe analysis, and mission success. In order to solve radio blackout, we propose to manipu...

2003
Benjamin A. Carreras Vickie E. Lynch David E. Newman Ian Dobson

Electric power transmission systems are a key infrastructure and blackouts of these systems have major direct and indirect consequences on the economy and national security. Analysis of North American Electrical Reliability Council blackout data suggests the existence of blackout size distributions with power tails. This is an indication that blackout dynamics behave as a complex dynamical syst...

Journal: :Journal of the Atomic Energy Society of Japan 2012

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