Principles of distributed database systems, third edition

We could consider this book as a classical one from many points of view. To start with, the book is the third in a series of editions since the first one more than 20 years ago, thus containing the evolution in the field of distributed databases as well as the basic concepts which are not strongly affected by technology evolution. The thorough review of relational databases as well as a discussion of several aspects of distributed systems (as computer networks) in Chapter 2 makes the book highly self-contained, enhancing reading and understanding underlying principles. The book covers all the problems expected to be encountered in distributed databases.\n\n(Párrafo extraído del texto a modo de resumen)</i

Principles of distributed database systems, third edition : Tamer Özsu, Patrick Valduriez; Springer – 2011; ISBN 978-1-4419-8833-1

We could consider this book as a classical one from many points of view. To start with, the book is the third in a series of editions since the first one more than 20 years ago, thus containing the evolution in the field of distributed databases as well as the basic concepts which are not strongly affected by technology evolution. The thorough review of relational databases as well as a discussion of several aspects of distributed systems (as computer networks) in Chapter 2 makes the book highly self-contained, enhancing reading and understanding underlying principles. The book covers all the problems expected to be encountered in distributed databases. (Párrafo extraído del texto a modo de resumen)Facultad de Informátic

Principles of distributed database systems, third edition : Tamer Özsu, Patrick Valduriez; Springer – 2011; ISBN 978-1-4419-8833-1

We could consider this book as a classical one from many points of view. To start with, the book is the third in a series of editions since the first one more than 20 years ago, thus containing the evolution in the field of distributed databases as well as the basic concepts which are not strongly affected by technology evolution. The thorough review of relational databases as well as a discussion of several aspects of distributed systems (as computer networks) in Chapter 2 makes the book highly self-contained, enhancing reading and understanding underlying principles. The book covers all the problems expected to be encountered in distributed databases. (Párrafo extraído del texto a modo de resumen)Facultad de Informátic

Principles of distributed database systems, third edition : Tamer Özsu, Patrick Valduriez; Springer – 2011; ISBN 978-1-4419-8833-1

We could consider this book as a classical one from many points of view. To start with, the book is the third in a series of editions since the first one more than 20 years ago, thus containing the evolution in the field of distributed databases as well as the basic concepts which are not strongly affected by technology evolution. The thorough review of relational databases as well as a discussion of several aspects of distributed systems (as computer networks) in Chapter 2 makes the book highly self-contained, enhancing reading and understanding underlying principles. The book covers all the problems expected to be encountered in distributed databases. (Párrafo extraído del texto a modo de resumen)Facultad de Informátic

New Method of Measuring TCP Performance of IP Network using Bio-computing

The measurement of performance of Internet Protocol IP network can be done by Transmission Control Protocol TCP because it guarantees send data from one end of the connection actually gets to the other end and in the same order it was send, otherwise an error is reported. There are several methods to measure the performance of TCP among these methods genetic algorithms, neural network, data mining etc, all these methods have weakness and can't reach to correct measure of TCP performance. This paper proposed a new method of measuring TCP performance for real time IP network using Biocomputing, especially molecular calculation because it provides wisdom results and it can exploit all facilities of phylogentic analysis. Applying the new method at real time on Biological Kurdish Messenger BIOKM model designed to measure the TCP performance in two types of protocols File Transfer Protocol FTP and Internet Relay Chat Daemon IRCD. This application gives very close result of TCP performance comparing with TCP performance which obtains from Little's law using same model (BIOKM), i.e. the different percentage of utilization (Busy or traffic industry) and the idle time which are obtained from a new method base on Bio-computing comparing with Little's law was (nearly) 0.13%. KEYWORDS Bio-computing, TCP performance, Phylogenetic tree, Hybridized Model (Normalized), FTP, IRCDComment: 17 Pages,10 Figures,5 Table

Philosophy of Blockchain Technology - Ontologies

About the necessity and usefulness of developing a philosophy specific to the blockchain technology, emphasizing on the ontological aspects. After an Introduction that highlights the main philosophical directions for this emerging technology, in Blockchain Technology I explain the way the blockchain works, discussing ontological development directions of this technology in Designing and Modeling. The next section is dedicated to the main application of blockchain technology, Bitcoin, with the social implications of this cryptocurrency. There follows a section of Philosophy in which I identify the blockchain technology with the concept of heterotopia developed by Michel Foucault and I interpret it in the light of the notational technology developed by Nelson Goodman as a notational system. In the Ontology section, I present two developmental paths that I consider important: Narrative Ontology, based on the idea of order and structure of history transmitted through Paul Ricoeur's narrative history, and the Enterprise Ontology system based on concepts and models of an enterprise, specific to the semantic web, and which I consider to be the most well developed and which will probably become the formal ontological system, at least in terms of the economic and legal aspects of blockchain technology. In Conclusions I am talking about the future directions of developing the blockchain technology philosophy in general as an explanatory and robust theory from a phenomenologically consistent point of view, which allows testability and ontologies in particular, arguing for the need of a global adoption of an ontological system for develop cross-cutting solutions and to make this technology profitable. CONTENTS: Abstract Introducere Tehnologia blockchain - Proiectare - Modele Bitcoin Filosofia Ontologii - Ontologii narative - Ontologii de intreprindere Concluzii Note Bibliografie DOI: 10.13140/RG.2.2.24510.3360

Adding X-security to Carrel: security for agent-based healthcare applications

The high growth of Multi-Agent Systems (MAS) in Open Networks with initiatives such as Agentcities1 requires development in many different areas such as scalable and secure agent platforms, location services, directory services, and systems management. In our case we have focused our effort on security for agent systems. The driving force of this paper is provide a practical vision of how security mechanisms could be introduced for multi-agent applications. Our case study for this experiment is Carrel [9]: an Agent-based application in the Organ and Tissue transplant domain. The selection of this application is due to its characteristics as a real scenario and use of high-risk data for example, a study of the 21 most visited health-related web sites on the Internet discovered that personal information provided at many of the sites was being inadvertently leaked for unauthorized persons. These factors indicate to us that Carrel would be a suitable environment in order to test existing security safeguards. Furthermore, we believe that the experience gathered will be useful for other MAS. In order to achieve our purpose we describe the design, architecture and implementation of security elements on MAS for the Carrel System.Postprint (published version