Results 31 to 40 of about 153,084 (263)

Survey on Integration of Consensus Mechanisms in IoT-based Blockchains [PDF]

Journal of Universal Computer Science, 2023
While IoT systems are increasingly present in different areas of society, ensuring their data’s privacy, security, and inviolability becomes paramount. In this direction, Blockchain has been used to protect the security and immutability of data
Anderson Melo de Morais, Fernando Antonio Aires Lins, Nelson Souto Rosa   +2 more
doaj   +3 more sources

Survey of Attacks and Defenses on Consensus Algorithms for Secure Data Replication in Distributed Systems

IEEE Access
Distributed systems are fundamental to modern computing infrastructures, enabling scalability, fault tolerance, and efficient resource sharing. To maintain a consistent view of resources and support data replication across network nodes, systems such as ...
Luigi Mastromauro, Dhiego Souto Andrade, Muslum Ozgur Ozmen, Michel A. Kinsy   +3 more
doaj   +1 more source

Implementation of the Raft Consensus Algorithm Based on the Coroutine Mechanism and a Specialized Network Library

Современные информационные технологии и IT-образование
This paper discusses the implementation of the Raft Server consensus module in the C++ standard 20 programming language. The key feature of the work is that the algorithm is implemented without the use of third-party libraries.
Maxim Melnikov, Elena Igonina
doaj   +1 more source

Consensus algorithms and the decomposition-separation theorem [PDF]

52nd IEEE Conference on Decision and Control, 2013
Convergence properties of time inhomogeneous Markov chain based discrete and continuous time linear consensus algorithms are analyzed. Provided that a so-called infinite jet flow property is satisfied by the underlying chains, necessary conditions for both consensus and multiple consensus are established.
Sadegh Bolouki, Roland P. Malhamé
openaire   +2 more sources

Analyzing Blockchain Consensus Mechanisms for Internet of Things Networks

Современные информационные технологии и IT-образование
The consensus mechanism is the main component of blockchain technology, which allows multiple nodes to agree on a consistent view of data within the blockchain network.
Maxim Melnikov, Elena Igonina
doaj   +1 more source

BLOCKCHAIN PROTOCOL STUDY

Современные информационные технологии и IT-образование, 2019
Blockchain has great advantages over existing payment systems (bank cards, electronic money, etc.), such as decentralization and auditing capacity. There is a wide range of blockchain applications, ranging from cryptocurrency, financial services, risk ...
Ruslan R. Giliazov
doaj   +1 more source

Consensus-Based Distributed Formation Control of Multi-Quadcopter Systems: Barrier Lyapunov Function Approach

IEEE Access, 2023
The problem of formation tracking control for a group of quadcopters with nonlinear dynamics using Barrier Lyapunov Functions (BLFs) is studied in this paper where the quadcopters are following a desired predefined trajectory in a predefined formation ...
Nargess Sadeghzadeh-Nokhodberiz, Nader Meskin   +1 more
doaj   +1 more source

Improving Network Security: Blockchain-based Authentication and Authorization Scheme in Accordance with Weighted Nodes in a Clustered Network

Iraqi Journal for Computers and Informatics
Addressing concerns related to network security involves protecting a network from various threats, including internal and external risks, such as identity theft, collusion, malicious activities, and other attacks.
Bushra Mohammed Jawad, Saif Mahmood Al-alak   +1 more
doaj   +1 more source

Leadership Uniformity in Timeout-Based Quorum Byzantine Fault Tolerance (QBFT) Consensus

Big Data and Cognitive Computing
This study evaluates leadership uniformity—the degree to which the proposer role is evenly distributed among validator nodes over time—in Quorum-based Byzantine Fault Tolerance (QBFT), a Byzantine Fault-Tolerant (BFT) consensus algorithm used in ...
Andreas Polyvios Delladetsimas, Stamatis Papangelou, Elias Iosif, George Giaglis   +3 more
doaj   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider, Kris‐Ann Schultz, Nora Schnitzler, Michael Abele, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Ines B. Brecht, Maja Cesen, Andrea Ferrari, Michaela Kuhlen, Malgorzata A. Krawczyk, Ricardo Lopez‐Almaraz, Yves Reguerre, Calogero Virgone, Daniel Orbach   +15 more
wiley   +1 more source