Sistemi Distribuiti Principi E Paradigmi

Autore: Andrew S. Tanenbaum
Editore: Pearson Italia S.p.a.
ISBN: 9788871923666
Grandezza: 60,36 MB
Formato: PDF, ePub
Vista: 5566
Scaricare Leggi Online

An Introduction To Distributed Algorithms

Autore: Valmir C. Barbosa
Editore: MIT Press
ISBN: 9780262024129
Grandezza: 54,88 MB
Formato: PDF, ePub, Docs
Vista: 9906
Scaricare Leggi Online

An Introduction to Distributed Algorithms takes up some of the main concepts and algorithms, ranging from basic to advanced techniques and applications, that underlie the programming of distributed-memory systems such as computer networks, networks of workstations, and multiprocessors. Written from the broad perspective of distributed-memory systems in general it includes topics such as algorithms for maximum flow, program debugging, and simulation that do not appear in more orthodox texts on distributed algorithms. Moving from fundamentals to advances and applications, ten chapters—with exercises and bibliographic notes—cover a variety of topics. These include models of distributed computation, information propagation, leader election, distributed snapshots, network synchronization, self- stability, termination detection, deadlock detection, graph algorithms, mutual exclusion, program debugging, and simulation. All of the algorithms are presented in a clear, template- based format for the description of message-passing computations among the nodes of a connected graph. Such a generic setting allows the treatment of problems originating from many different application areas. The main ideas and algorithms are described in a way that balances intuition and formal rigor—most are preceded by a general intuitive discussion and followed by formal statements as to correctness complexity or other properties.

Semantic Search Over The Web

Autore: Roberto De Virgilio
Editore: Springer Science & Business Media
ISBN: 3642250084
Grandezza: 43,99 MB
Formato: PDF, Kindle
Vista: 1447
Scaricare Leggi Online

The Web has become the world’s largest database, with search being the main tool that allows organizations and individuals to exploit its huge amount of information. Search on the Web has been traditionally based on textual and structural similarities, ignoring to a large degree the semantic dimension, i.e., understanding the meaning of the query and of the document content. Combining search and semantics gives birth to the idea of semantic search. Traditional search engines have already advertised some semantic dimensions. Some of them, for instance, can enhance their generated result sets with documents that are semantically related to the query terms even though they may not include these terms. Nevertheless, the exploitation of the semantic search has not yet reached its full potential. In this book, Roberto De Virgilio, Francesco Guerra and Yannis Velegrakis present an extensive overview of the work done in Semantic Search and other related areas. They explore different technologies and solutions in depth, making their collection a valuable and stimulating reading for both academic and industrial researchers. The book is divided into three parts. The first introduces the readers to the basic notions of the Web of Data. It describes the different kinds of data that exist, their topology, and their storing and indexing techniques. The second part is dedicated to Web Search. It presents different types of search, like the exploratory or the path-oriented, alongside methods for their efficient and effective implementation. Other related topics included in this part are the use of uncertainty in query answering, the exploitation of ontologies, and the use of semantics in mashup design and operation. The focus of the third part is on linked data, and more specifically, on applying ideas originating in recommender systems on linked data management, and on techniques for the efficiently querying answering on linked data.

Citt E Parchi

Autore: Luciano Fonti
Editore: Gangemi Editore spa
ISBN: 8849254555
Grandezza: 78,64 MB
Formato: PDF, Docs
Vista: 8774
Scaricare Leggi Online

I più recenti studi di ricerca e le ultime conferenze internazionali sul tema dei Parchi Metropolitani e Periurbani hanno sempre più posto l’accento sui rapporti di integrazione fra aree naturali protette e sistemi urbanizzati contermini e sulle positive ricadute che la pianificazione ambientale può determinare sugli interventi di riqualificazione urbana. Superata la tradizionale distinzione fra città e campagna si è reso necessario un radicale ripensamento della progettazione degli assetti e della gestione dei parchi inseriti in contesti urbanizzati, rendendo così possibili nuovi scenari caratterizzati non solo dagli aspetti paesistico – ambientali, ma soprattutto da quelli culturali, economici e funzionali di un contesto più esteso. Le aree naturali protette, per le specifiche risorse che offrono e per le molteplici potenzialità d’uso, possono svolgere un ruolo fondamentale: quello di ridefinire i rapporti fra conservazione, valorizzazione della natura e riqualificazione urbana. Questo testo si propone non tanto di suggerire una soluzione a tutte le problematiche che possono derivare da questo tipo di impostazione del problema, quanto di presentare di una serie di esperienze di ricerca che si propongono di offrire riflessioni e spunti di approfondimento quale possibile inquadramento per soluzioni più complete e avanzate.

Principi Di Linguistica Applicata

Autore: Enrico Arcaini
Grandezza: 34,41 MB
Formato: PDF, ePub
Vista: 6416
Scaricare Leggi Online

Index For Inclusion

Autore: Tony Booth
ISBN: 9781872001685
Grandezza: 16,21 MB
Formato: PDF, ePub, Docs
Vista: 3845
Scaricare Leggi Online

The Ethical Economy

Autore: Adam Arvidsson
Editore: Columbia University Press
ISBN: 0231152647
Grandezza: 48,28 MB
Formato: PDF, ePub
Vista: 2027
Scaricare Leggi Online

A more ethical economic system is now possible, one that rectifies the crisis spots of our current downturn while balancing the injustices of extreme poverty and wealth. Adam Arvidsson and Nicolai Peitersen, a scholar and an entrepreneur, outline the shape such an economy might take, identifying its origins in innovations already existent in our production, valuation, and distribution systems. Much like nineteenth-century entrepreneurs, philosophers, bankers, artisans, and social organizers who planned a course for modern capitalism that was more economically efficient and ethically desirable, we now have a chance to construct new instruments, institutions, and infrastructure to reverse the trajectory of a quickly deteriorating economic environment. Considering a multitude of emerging phenomena, Arvidsson and Peitersen show wealth creation can be the result of a new kind of social production, and the motivation of continuous capital accumulation can exist in tandem with a new desire to maximize our social impact. Arvidsson and Peitersen argue that financial markets could become a central arena in which diverse ethical concerns are integrated into tangible economic valuations. They suggest that such a common standard has already emerged and that this process is linked to the spread of social media, making it possible to capture the sentiment of value to most people. They ultimately recommend how to build upon these developments to initiate a radical democratization of economic systems and the value decisions they generate.

Pattern Grammar

Autore: Susan Hunston
Editore: John Benjamins Publishing
ISBN: 9789027222732
Grandezza: 31,79 MB
Formato: PDF, ePub
Vista: 5854
Scaricare Leggi Online

This book describes an approach to lexis and grammar based on the concept of phraseology and of language patterning arising from work on large corpora. The notion of 'pattern' as a systematic way of dealing with the interface between lexis and grammar was used in Collins Cobuild English Dictionary (1995) and in the two books in the Collins Cobuild Grammar Patterns series (1996; 1998). This volume describes the research that led to these publications, and explores the theoretical and practical implications of the research. The first chapter sets the work in the context of work on phraseology. The next two chapters give several examples of patterns and how they are identified. Chapters 4 and 5 discuss and exemplify the association of pattern and meaning. Chapters 6, 7 and 8 relate the concept of pattern to traditional approaches to grammar and to discourse. Chapter 9 summarizes the book and adds to the theoretical discussion, as well as indicating the applications of this approach to language teaching. The volume is intended to contribute to the current debate concerning how corpora challenge existing linguistic theories, and as such will be of interest to researchers in the fields of grammar, lexis, discourse and corpus linguistics. It is written in an accessible style, however, and will be equally suitable for students taking courses in those areas.

Bakunin Statism And Anarchy

Autore: Mikhail Aleksandrovich Bakunin
Editore: Cambridge University Press
ISBN: 9780521369732
Grandezza: 35,86 MB
Formato: PDF, Kindle
Vista: 2101
Scaricare Leggi Online

Statism and Anarchy is a complete English translation of the last work by the great Russian anarchist Michael Bakunin, written in 1873. Then he assails the Marxist alternative, predicting that a 'dictatorship of the proletariat' will in fact be a dictatorship over the proletariat, and will produce a new class of socialist rulers. Instead, he outlines his vision of an anarchist society and identifies the social forces he believes will achieve an anarchist revolution. Statism and Anarchy had an immediate influence on the 'to the people' movement of Russian populism, and Bakunin's ideas inspired significant anarchist movements in Spain, Italy, Russia and elsewhere. In a lucid introduction Marshall Shatz locates Bakunin in his immediate historical and intellectual context, and assesses the impact of his ideas on the wider development of European radical thought. A guide to further reading and chronology of events are also appended as aids to students encountering Bakunin's thought for the first time.