This thesis is intended to be a succinct and rather informal presentation of some of my most recent work, which has been done in collaboration with several other people. In particular this thesis concentrates on our contributions to the study of incomplete information in the context of data interoperability. In this scenario data is heterogenous and decentralized, needs to be integrated from se...

Over the past fifty years the size of computer applications, as gauged by any reasonable measure, has increased exponentially. In contrast, our cognitive capabilities for understanding have not changed. This discrepancy has forced us to look for more abstract representations of systems to reduce the number of elements we have to consider simultaneously in order to understand the system behavior...

variation of frequency and voltage by load changes in a microgrid is a challenge in droop control method. centralized restoration frequency or voltage in a microgrid requires communication link and therefore affects the advantage of decentralized droop control such as reliability, simplicity and inexpensiveness. this paper proposes a decentralized method that restores the frequency of a microgr...

One of the current trends in computer science leads to the design of computing organizations based on the activity of a multitude of tiny cheap decentralized computing entities. Whether these chips are integrated into paintings or disseminated in open environments like dust, the fundamental problem lies in their cooperative operation so that global functions are obtained collectively. In this p...

Decentralized Object Location and Routing: A New Networking Paradigm

in this paper, the competition between two supply chains and their elements is studied. each chain consisted of a manufacturer and a distributor and the two chains compete in a market with single type of customer sensitive to price and delivery time. therefore, this is a two-supply chain game and during the competition between two supply chains, elements of each supply chain (manufacturer and/o...

Cloud Computing is a new application model for decentralized computing which can provide reliable, customized and maximum number of users with minimum resource. The development of cloud computing marks a great leap towards designing a unified, open and flexible educational information platform, sharing educational resources, and diminishing gaps in the use of educational information. This paper...

In decentralized computing environments, systems are built mainly from components that are developed and maintained independently by different third-party providers. The executions and evolutions of components located on distributed sites are beyond the control of the system developers, and the availabilities of those components are, to some extent, unpredictable because of their own tendencies...

As the autonomous decentralized system (ADS) philosophy is meeting increasing acceptance by the system engineering community, the type and number of highly autonomous subsystems will grow rapidly. Standardization of the methods and protocols by which autonomous subsystems interconnect or interact among themselves is an important issue with respect to further enhancing the economic advantages of...