Results 21 to 30 of about 759,303 (178)

The sustainability of blockchain [PDF]

open access: yes, 2022
openBlockchain technology is considered one of the most fascinating technology in the last 20 years. Blockchain system needs improvements due to their problems as all technologies are needed in their lifetime.
CAKMAK, YAGIZ CAFER
core  

A Novel Data-Driven Evaluation Framework for Fork after Withholding Attack in Blockchain Systems

open access: yesSensors, 2022
In the blockchain system, mining pools are popular for miners to work collectively and obtain more revenue. Nowadays, there are consensus attacks that threaten the efficiency and security of mining pools. As a new type of consensus attack, the Fork After
Yang Zhang   +5 more
doaj   +1 more source

Distributed Hybrid Double-Spending Attack Prevention Mechanism for Proof-of-Work and Proof-of-Stake Blockchain Consensuses

open access: yesFuture Internet, 2021
Blockchain technology is a sustainable technology that offers a high level of security for many industrial applications. Blockchain has numerous benefits, such as decentralisation, immutability and tamper-proofing. Blockchain is composed of two processes,
Nur Arifin Akbar   +3 more
doaj   +1 more source

Efficient Load Balancing for Blockchain-Based Healthcare System in Smart Cities

open access: yesApplied Sciences, 2023
Smart cities are emerging rapidly due to the provisioning of comfort in the human lifestyle. The healthcare system is an important segment of the smart city. The timely delivery of critical human vital signs data to emergency health centers without delay
Faheem Nawaz Tareen   +7 more
doaj   +1 more source

BlockTrainHK: An online learning game for experiencing blockchain concepts

open access: yesSoftwareX, 2022
Although blockchain is regarded as a promising and revolutionary technology, not everyone, particular non-technical students, can effectively understand and appraise its mechanism.
Yung Po Tsang   +2 more
doaj   +1 more source

Ontology of core data mining entities [PDF]

open access: yes, 2014
In this article, we present OntoDM-core, an ontology of core data mining entities. OntoDM-core defines themost essential datamining entities in a three-layered ontological structure comprising of a specification, an implementation and an application ...
Dzeroski, S, Soldatova, L, Panov, P
core   +1 more source

Advances on External Machine Computing Power Focusing on Internal Personal Value: A Case Study on the New Digital Currency

open access: yesMathematics, 2023
As global inflation escalates and geopolitical conflicts exacerbate, the world’s economy confronts an intensified degree of instability. In this volatile environment, blockchain currencies emerge as a potential bulwark, offering both value preservation ...
Yiming Qian   +5 more
doaj   +1 more source

The Impact of the Blockchain-Based Approach On Smart Contracts in the Development of E-Commerce Using Data Mining [PDF]

open access: yesمدیریت مهندسی و رایانش نرم
A smart contract is a computer protocol for creating or improving a contract. A smart contract allows for the creation of valid transactions without the need for an intermediary.
Mohammad Reza Maranaki, Mahmood Deypir
doaj   +1 more source

Blockchain Based Dynamic Spectrum Access of Non-Real-Time Data in Cyber-Physical-Social Systems

open access: yesIEEE Access, 2020
Big data sharing in Cyber-Physical-Social Systems (CPSSs) relies on wireless transmission between numerous devices, causing a serious scarcity of radio spectrum resources. Although license-free spectrum access has great potential to alleviate the growing
Xin Fan, Yan Huo
doaj   +1 more source

Interdependencies between mining costs, mining rewards and blockchain security

open access: yes, 2021
This paper studies to what extent the cost of operating a proof-of-work blockchain is intrinsically linked to the cost of preventing attacks, and to what extent the underlying digital ledger’s security budgets are correlated with the cryptocurrency ...
RAJCANIOVA Miroslava   +2 more
core   +2 more sources

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