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Keyword: Distributed Systems
Determinism of Replicated Distributed Systems–A Timing Analysis of the Data Passing Process
Fault-tolerant applications are created by replicating the software or hardware component in a distributed system. Communications are normally carried out over an Ethernet network to interact with the distributed/replicated system, ensuring atomic multicast properties. However, there are situations in which it is not possible to guarantee that the replicas process the same data set in…
Read More Modelling the Methodology to Assess the Effectiveness of Distributed Information Systems
This research aims to develop the methodology to assess effectiveness of distributed information systems (hereinafter IS). The effectiveness of information systems is reviewed along with their reliability. The article underlines the importance of reliability assessment for large geographically distributed systems. We suggest the approach based on the hierarchical presentation of reliability scheme that constitutes the…
Read More Using Leader Election and Blockchain in E-Health
The development of electronic healthcare systems requires to adopt modern technologies and architectures. The use of Electronic Personal Health Record (E-PHR) should be supported by efficient storage such as cloud storage which enables more security, availability and accessibility of patients’ records. Actually, the increase of availability of E-PHR enhances parallel access, which improves the performance…
Read More Can parallelization save the (computing) world?
As all other laws of the growth in computing, the growth of computing performance also shows a ”logistic curve”-like behavior, rather than an unlimited exponential growth. The stalling of the single-processor performance experienced nearly two decades ago forced computer experts to look for alternative methods, mainly for some kind of parallelization. Solving the task needs…
Read More Boundary gradient exact enlarged controllability of semilinear parabolic problems
The aim of this paper is to study the boundary enlarged gradient controllability problem governed by parabolic evolution equations. The purpose is to find and compute the control \(u\) which steers the gradient state from an initial gradient one \(\nabla y_{_{0}}\) to a gradient vector supposed to be unknown between two defined bounds \(b_1\) and…
Read More Multi Operated Virtual Power Plant in Smart Grid
In order to balance the power in intelligent distribution networks (Smart Grid or Microgrid), it is proposed to organize a «multi operated virtual power plant». The resources of active and reactive power for which can be obtained using an AC voltage controller with a phase-angle control for regulation of operating modes of the ohmic load…
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