Performance and Reliability Analysis of Computer Systems: An Example-Based Approach Using the SHARPE Software Package provides a variety of probabilistic, discrete-state models used to assess the reliability and performance of computer and communication systems. The models included are combinatorial reliability models (reliability block diagrams, fault trees and reliability graphs), directed, acyclic task precedence graphs, Markov and semi-Markov models (including Markov reward models), product-form queueing networks and generalized stochastic Petri nets. A practical approach to system modeling is followed; all of the examples described are solved and analyzed using the SHARPE tool. In structuring the book, the authors have been careful to provide the reader with a methodological approach to analytical modeling techniques. These techniques are not seen as alternatives but rather as an integral part of a single process of assessment which, by hierarchically combining results from different kinds of models, makes it possible to use state-space methods for those parts of a system that require them and non-state-space methods for the more well-behaved parts of the system. The SHARPE (Symbolic Hierarchical Automated Reliability and Performance Evaluator) package is the `toolchest' that allows the authors to specify stochastic models easily and solve them quickly, adopting model hierarchies and very efficient solution techniques. All the models described in the book are specified and solved using the SHARPE language; its syntax is described and the source code of almost all the examples discussed is provided. Audience: Suitable for use in advanced level courses covering reliability and performance of computer and communications systems and by researchers and practicing engineers whose work involves modeling of system performance and reliability.
Performance and Reliability Analysis of Computer Systems: An Example-Based Approach Using the SHARPE Software Package provides a variety of probabilistic, discrete-state models used to assess the reliability and performance of computer and communication systems. The models included are combinatorial reliability models (reliability block diagrams, fault trees and reliability graphs), directed, acyclic task precedence graphs, Markov and semi-Markov models (including Markov reward models), product-form queueing networks and generalized stochastic Petri nets. A practical approach to system modeling is followed; all of the examples described are solved and analyzed using the SHARPE tool. In structuring the book, the authors have been careful to provide the reader with a methodological approach to analytical modeling techniques. These techniques are not seen as alternatives but rather as an integral part of a single process of assessment which, by hierarchically combining results from different kinds of models, makes it possible to use state-space methods for those parts of a system that require them and non-state-space methods for the more well-behaved parts of the system. The SHARPE (Symbolic Hierarchical Automated Reliability and Performance Evaluator) package is the `toolchest' that allows the authors to specify stochastic models easily and solve them quickly, adopting model hierarchies and very efficient solution techniques. All the models described in the book are specified and solved using the SHARPE language; its syntax is described and the source code of almost all the examples discussed is provided. Audience: Suitable for use in advanced level courses covering reliability and performance of computer and communications systems and by researchers and practicing engineers whose work involves modeling of system performance and reliability.
Due to the advancement of emerging technologies — Internet of Things (IoT), Artificial Intelligence (AI), and Blockchain (BC) — numerous aspects of our daily lives have witnessed remarkable progress. Further, with the involvement of these technologies (IoT, AI, and BC), the social life of a human is becoming more intelligent than ever. These technologies play a pivotal role in enhancing sectors such as healthcare, education, cities, households, agriculture, and industrial applications despite encountering certain challenges and complexities. Based on the contributions of these technologies, we provide a comprehensive survey covering various smart applications in different areas of everyday life. Firstly, we undertake an examination of state-of-the-art information, attributes, and prospects, with a specific emphasis on the literature that revolves around the technologies of AI, BC, and IoT. Further, we discuss the contributions of these technologies in the targeted areas and applications. Then, we efficiently introduce the integration of these technologies, including IoT-BC, IoT-AI-BC, and BC-AI, in the desired fields. Lastly, some open issues and future challenges have been analysed.
After enemies murdered his family and plundered his empire, a legendary Mafioso emerged from prison to a fateful dilemma: Rebuild or seek revenge? Montreal godfather Vito Rizzuto sat helpless in a Colorado penitentiary while learning that unidentified assassins had killed his eldest son, and likely heir, and then murdered his father. Subsequent deaths of Vito’s loyal associates filled the news throughout hissentence. From their comfortable base in the Toronto area, the Calabrian ’Ndrangheta seemed the obvious culprits; but, as internationally bestselling crime writers Peter Edwards and Antonio Nicaso reveal in this compelling and far-reaching investigation, many unseen hands were at work. In 2012, Vito Rizzuto emerged from prison, a sixty-six-year-old man who could carefully reconstruct his crime family or damn the consequences and punish his betrayers. From the events leading to his imprisonment, through the bloodshed following his release, to his mysterious death in 2013 and morerecent efforts to continue his family’s dominance, Bad Blood is the final word in the story of a twenty-first-century criminal mastermind.
Bestselling crime writers Peter Edwards and Antonio Nicaso reveal the final years of Canada's top mafia boss, Vito Rizzuto, and his bloody war to avenge his family and control the North American drug trade. Until Vito Rizzuto went to prison in 2006 for his role in a decades-old Brooklyn triple murder, he ruled the Port of Montreal, the northern gateway to the major American drug markets. A master diplomat, he won the respect of rival mafia clans, bikers and street gangs, and criminal business thrived on his turf. His family prospered and his empire grew--until one of North America's true Teflon dons finally lost his veneer. As he watched helplessly from his Colorado prison, the murders of his son and father made international headlines; the killings of his lieutenants and friends filled the pages of Canadian news; and the influence of the 'Ndrangheta, the Calabrian Mafia, spread across Montreal faster than the blood of Rizzuto's crime family. In 2012, Vito Rizzuto emerged from prison, a 66-year-old man who could carefully rebuild his criminal empire or seek bloody revenge and damn the consequences. From the events leading to his imprisonment to his shocking death in December 2013, Business or Blood is the final chapter of Vito's story.
Preface Open angle glaucoma (OAG) is one of the leading causes of impaired vision worldwide. The pathogenesis of glaucomatous optic neuropathy remains poorly understood, and several pathogenic mechanisms are proposed to coexist. As the world population ages, OAG will become more prevalent and advances in the diagnosis and treatment of glaucomatous optic neuropathy are important to protect and improve the quality of life of our aging population. Treatment of OAG has been directed at lowering intraocular pressure (IOP) which is the only current therapeutic strategy available to patients with glaucoma. While a wide variety of studies have demonstrated that lowering IOP decreases the risk of glaucoma development and/or progression, many studies have also shown that some patients continue to lose vision despite significant lowering of IOP. There have been many attempts to elucidate the etiology for the deterioration in glaucomatous optic neuropathy despite low levels of IOP. Over the past several decades, deficits in the ocular circulation of patients with OAG have become well established and these may explain the continued progression of OAG patients despite lowered IOP. The purpose of the present publication is to provide an updated view of ocular blood flow and vascular dysregulation in OAG. The importance of the topic was demonstrated by the focus of the 2009 6th Consensus meeting of the World Glaucoma Association which focused entirely on blood flow deficits in patients with OAG. Although a great deal of knowledge on vascular risk factors in glaucoma has already been established, many questions remain. Do ocular blood flow deficits precede glaucoma progression? How does ocular perfusion pressure fit into the IOP and blood flow paradigm? What conclusions can be drawn from recent evidence showing the fluctuation of OAG risk factors including IOP, blood pressure and ocular perfusion pressure? We hope this update d current prospective will serve as a foundation for future investigations which will be designed to answer these and other important considerations in the management of glaucoma. Alon Harris, MS, PhD, FARVO Director of Clinical Research Lois Letzter Professor of Ophthalmology Professor of Cellular and Integrative Physiology
Proceedings of the July 2002 symposium that addressed all aspects of computer, communications, and service provisioning over the enhanced global telecommunications networks. The 160 papers discuss QoS and differentiated services, ad hoc networks, traffic management and scheduling, satellite communic
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.