Results 71 to 80 of about 740,083 (279)

Denial-of-Service Attacks on Permissioned Blockchains: A Practical Study

open access: yesJournal of Cybersecurity and Privacy
Hyperledger Fabric (HLF) is a leading permissioned blockchain platform designed for enterprise applications. However, it faces significant security risks from Denial-of-Service (DoS) attacks targeting its core components.
Mohammad Pishdar   +3 more
doaj   +1 more source

Weighted Consensus Problem for Multiagent Systems with Edge- and Node-Weighted Directed Graphs

open access: yesComplexity, 2019
In this paper, the concept of consensus is generalized to weighted consensus, by which the conventional consensus, the bipartite consensus, and the cluster consensus problems can be unified in the proposed weighted consensus frame. The dynamics of agents
Lixin Gao, Hui Fang, Wenhai Chen, He Cao
doaj   +1 more source

Distributed Robust Consensus Control of Multi-agent Systems with Heterogeneous Matching Uncertainties

open access: yes, 2013
This paper considers the distributed consensus problem of linear multi-agent systems subject to different matching uncertainties for both the cases without and with a leader of bounded unknown control input.
Duan, Zhisheng   +2 more
core   +1 more source

BunchBFT: Across-Cluster Consensus Protocol

open access: yes, 2022
In this paper, we present BunchBFT Byzantine fault-tolerant state-machine replication for high performance and scalability. At the heart of BunchBFT is a novel design called the cluster-based approach that divides the replicas into clusters of replicas.
Alqahtani, Salem, Demirbas, Murat
openaire   +2 more sources

Screening for lung cancer: A systematic review of overdiagnosis and its implications

open access: yesMolecular Oncology, EarlyView.
Low‐dose computed tomography (CT) screening for lung cancer may increase overdiagnosis compared to no screening, though the risk is likely low versus chest X‐ray. Our review of 8 trials (84 660 participants) shows added costs. Further research with strict adherence to modern nodule management strategies may help determine the extent to which ...
Fiorella Karina Fernández‐Sáenz   +12 more
wiley   +1 more source

Data-Driven Consensus Protocol Classification Using Machine Learning

open access: yesMathematics
The consensus protocol plays a vital role in the performance and security of a specific Distributed Ledger Technology (DLT) solution. Currently, the traditional classification of consensus algorithms relies on subjective criteria, such as protocol ...
Marco Marcozzi   +3 more
doaj   +1 more source

Applicability and Appropriateness of Distributed Ledgers Consensus Protocols in Public and Private Sectors: A Systematic Review

open access: yesIEEE Access, 2019
Advancement of consensus protocols in recent years has enabled distributed ledger technologies (DLTs) to find its application and value in sectors beyond cryptocurrencies.
A. Shahaab   +3 more
doaj   +1 more source

Stochastic stability of continuous time consensus protocols

open access: yes, 2012
A unified approach to studying convergence and stochastic stability of continuous time consensus protocols (CPs) is presented in this work. Our method applies to networks with directed information flow; both cooperative and noncooperative interactions ...
Medvedev, Georgi S.
core   +1 more source

Liquid biopsy epigenetics: establishing a molecular profile based on cell‐free DNA

open access: yesMolecular Oncology, EarlyView.
Cell‐free DNA (cfDNA) fragments in plasma from cancer patients carry epigenetic signatures reflecting their cells of origin. These epigenetic features include DNA methylation, nucleosome modifications, and variations in fragmentation. This review describes the biological properties of each feature and explores optimal strategies for harnessing cfDNA ...
Christoffer Trier Maansson   +2 more
wiley   +1 more source

Finite-Time Consensus of Heterogeneous Multi-Agent Systems Without Velocity Measurements and With Disturbances via Integral Sliding Mode Control

open access: yesIEEE Access, 2018
In this paper, the finite-time consensus protocols are designed to solve the problems of unmeasured velocity and disturbances in heterogeneous multi-agent systems, in which the communications among agents are described by a directed graph.
Hongtao Ye   +3 more
doaj   +1 more source

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