【Author】 Yousefi, Samuel Tosarkani, Babak Mohamadpour

【Source】INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS

【影响因子】11.251

【主题类别】

区块链治理-市场治理-技术采用

【Abstract】Nowadays, distributed ledger technologies (e.g., blockchain technology) can play significant roles in improving supply chain management and sustainability. Blockchain technology can support responsible sourcing and ensure compliance with environmental standards by boosting traceability and transparency in sustainable supply chains. Nevertheless, blockchain technology has not been widely applied in this field due to the lack of familiarity of managers with its intrinsic characteristics. This study investigates the performance improvement, arising from the blockchain implementation, to address the problem of managerial conservatism and this technology adoption. Accordingly, an analytical approach is proposed to identify blockchain technology adoption enablers and analyze their impact on supply chain performance. At first, the main enablers, derived from the literature review, are explored using network theory. The existing causal relationships between enablers are extracted based on a multi-expertise team members' agreement. Then, the fuzzy inference system is employed to determine the weights of relationships between the identified enablers and supply chain performance-related targets. After modeling the extracted causal relationships using the fuzzy cognitive map model, a scenario is defined for each enabler, and its impact on improving supply chain performance is estimated by implementing the hybrid learning algorithm. Finally, the obtained outputs are used to prioritize the blockchain technology adoption enablers using the fuzzy data envelopment analysis model. The result of this study implies that the blockchain technology can have a significant impact on mineral supply chain performance by creating smart contracts and enhancing environmental sustainability, traceability, and transparency.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain technology adoption; Sustainable mineral supply chain; Network theory; Fuzzy cognitive map; Fuzzy data envelopment analysis

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 实证数据

【DOI】 10.1016/j.ijpe.2022.108429

【Author】 Miao, Yinbin Liu, Ziteng Li, Hongwei Choo, Kim-Kwang Raymond Deng, Robert H.

【Source】IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY CCF-A

【影响因子】7.231

【主题类别】

区块链技术-协同技术-隐私计算

【Abstract】Federated learning enables clients to train a machine learning model jointly without sharing their local data. However, due to the centrality of federated learning framework and the untrustworthiness of clients, traditional federated learning solutions are vulnerable to poisoning attacks from malicious clients and servers. In this paper, we aim to mitigate the impact of the central server and malicious clients by designing a Privacy-preserving Byzantine-robust Federated Learning (PBFL) scheme based on blockchain. Specifically, we use cosine similarity to judge the malicious gradients uploaded by malicious clients. Then, we adopt fully homomorphic encryption to provide secure aggregation. Finally, we use blockchain system to facilitate transparent processes and implementation of regulations. Our formal analysis proves that our scheme achieves convergence and provides privacy protection. Our extensive experiments on different datasets demonstrate that our scheme is robust and efficient. Even if the root dataset is small, our scheme can achieve the same efficiency as FedSGD.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Servers; Blockchains; Collaborative work; Computational modeling; Training; Resists; Privacy; Federated learning; poisoning attacks; fully homomorphic encryption; blockchain

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.1109/TIFS.2022.3196274

【Author】 Bashar, Golam Dastoger Holmes, Joshua Dagher, Gaby G.

【Source】IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY CCF-A

【影响因子】7.231

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Blockchain is an emerging distributed and decentralized technology that promises to revolutionize the healthcare sector by securely storing and maintaining incorruptible electronic health record data. Consensus protocols are at the core of blockchain technology. They establish security and integrity in the system by ensuring that the majority of miners are in agreement on all transactions and blocks added to the distributed ledger. While many consensus protocols have been proposed, most of them require heavy computation and are not scalable. In this work, we propose a novel permissioned consensus protocol, named ACCORD, a multi-leader (quorum-based) protocol that achieves fork-resistance, robustness, and scalability. To achieve this, ACCORD consists of three distinct components: 1) an asynchronous quorum selection procedure to designate the creators of future blocks; 2) a block creation protocol run by the quorum to prevent omissions in the presence of honest quorum members; and 3) a decentralized arbitration protocol to ensure consensus by voting. Additionally, we implemented the protocol and conducted experiments to demonstrate scalability, robustness, and fairness.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Consensus protocol; Protocols; Hospitals; Robustness; Scalability; Distributed ledger; Computer science; Blockchains; consensus protocol; electronic healthcare

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.1109/TIFS.2022.3198860

【Author】 Zhu, Yan Li, Bingyu Yang, Yang Ding, Zhenyang Zheng, Haibing He, Guangyu Hou, Shengjie

【Source】SENSORS

【影响因子】3.847

【主题类别】

区块链技术-核心技术-加密算法

【Abstract】Random beacons play a crucial role in blockchains. Most random beacons in a blockchain are performed in a distributed approach to secure the generation of random numbers. However, blockchain nodes are in an open environment and are vulnerable to adversary reboot attacks. After such an attack, the number of members involved in a random number generation decreases. The random numbers generated by the system become insecure. To solve this problem while guaranteeing fast recovery of capabilities, we designed a threshold signature scheme based on share recovery. A bivariate polynomial was generated among the participants in the distributed key generation phase. While preserving the threshold signature key share, it can also help participants who lost their shares to recover. The same threshold setting for signing and recovery guarantees the security of the system. The results of our scheme show that we take an acceptable time overhead in distributed key generation and simultaneously enrich the share recovery functionality for the threshold signature-based random number generation scheme.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】random beacon; blockchain; bivariate polynomial; threshold signature; share recovery

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.3390/s22166004

【Author】 Santin, Gabriele Skarbovsky, Inna Fournier, Fabiana Lepri, Bruno

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链应用-实体经济-网安领域

【Abstract】Collaborative and Federated Leaning are emerging approaches to manage cooperation between a group of agents for the solution of Machine Learning tasks, with the goal of improving each agent's performance without disclosing any data. In this paper we present a novel algorithmic architecture that tackle this problem in the particular case of Anomaly Detection (or classification of rare events), a setting where typical applications often comprise data with sensible information, but where the scarcity of anomalous examples encourages collaboration. We show how Random Forests can be used as a tool for the development of accurate classifiers with an effective insight-sharing mechanism that does not break the data integrity. Moreover, we explain how the new architecture can be readily integrated in a blockchain infrastructure to ensure the verifiable and auditable execution of the algorithm. Furthermore, we discuss how this work may set the basis for a more general approach for the design of collaborative ensemble-learning methods beyond the specific task and architecture discussed in this paper.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Collaboration; Collaborative work; Anomaly detection; Radio frequency; Training; Computer architecture; Task analysis; Algorithm auditing; anomaly detection; blockchain; collaborative learning

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.1109/ACCESS.2022.3196391

【Author】 Bigini, Gioele Lattanzi, Emanuele

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】With the dramatic increase of the Internet of Medical Things devices, self and remote health data monitoring is consistently receiving more attention. However, medical devices are usually challenging to deploy due to privacy regulations, and they generally leverage a centralized third party. Enabling data sharing would enhance new medical studies, formulate new treatments, and deliver new digital health technologies. Solving the issue will have a triple impact: we will handle sensitive information easily, contribute to international medical advancements, and enable personalized care. A possible solution is to exploit decentralization distributing privacy concerns directly to users. Solutions enabling this vision are closely linked to Distributed Ledger Technologies. Through its characteristics of immutability and transparency, this technology would allow privacy-compliant solutions in contexts where privacy is the first need. This paper envisions the InterPlanetary Health Layer and related real-world implementations in the Internet of Medical Things domain. The main idea of the proposed solution is to handle sensitive data by preserving privacy and guaranteeing data availability. Specifically, users can build their private network, collaboratively authorize operations among their data and manage their privacy conditions without relying on a third party. The results of several stress tests conducted on a real case study confirmed the feasibility of the proposed solution, which shows good scalability and a modest impact on the application performance measured during the decentralized data access.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Distributed ledger; Medical services; Smart contracts; Peer-to-peer computing; Internet of Medical Things; Codes; Scalability; Decentralized Internet of Medical Things; distributed ledger technology; InterPlanetary file system; InterPlanetary health layer

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.1109/ACCESS.2022.3196933

【Author】 Agarwal, Udit Rishiwal, Vinay Tanwar, Sudeep Chaudhary, Rashmi Sharma, Gulshan Bokoro, Pitshou N. Sharma, Ravi

【Source】IEEE ACCESS

【影响因子】3.476

【主题类别】

区块链应用-实体经济-供应链

【Abstract】Supply chain management (SCM) is a core corporate activity responsible for moving commodities and services from one point to another through a variety of stakeholders. The traditional SCM is based on a centralized approach managed at the central headquarter, and all other sub-offices get instructions from the main office. Some major issues with present SCM systems are security, transactional transparency, traceability, stakeholder involvement, product counterfeiting, additional delays, fraud, and instabilities. Blockchain (BC) emerges as a technology that can manage the data and build trust efficiently and transparently. It can also aid in transaction authorization and verification in the supply chain or payments without a third party. To address the present SCM issues, BC technology is a feasible solution. Motivated by the aforementioned considerations, in this paper, we present a survey on the adoption of BC in SCM. This paper undertakes a comprehensive analysis of the literature on BC characteristics, implementations, and business consequences in various SCM. This Blockchain-centered study, in particular, discloses the research state and delineates future research directions by studying and analyzing 97 up-to-date publications highlighting BC's supply chain uses. Transparency and traceability, information sharing, product anti-counterfeiting, and building trust are the major aspects propelling BC's implementation in SCM. Further, we analyzed various applications of SCM in which BC can be used as a probable technology to secure all transactions. Then, we have highlighted open issues and research challenges for adopting BC technology in SCM that open the doors for beginners eager to start work in this amazing area.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Supply chains; Stakeholders; Software; Security; Supply chain management; Companies; Blockchains; Blockchain; security; supply chain management; traceability; transparency

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 综述

【DOI】 10.1109/ACCESS.2022.3194319

【Author】 Tsang, Yung Po Wu, Chun Ho Lee, Carman Ka Man

【Source】SOFTWAREX

【影响因子】2.868

【主题类别】

区块链应用-实体经济-教育领域

【Abstract】Although blockchain is regarded as a promising and revolutionary technology, not everyone, particular non-technical students, can effectively understand and appraise its mechanism. To spread knowledge of blockchain technology, an online educational game for learning blockchain concepts named 'Block-TrainHK' is designed and developed from the React Native framework. Users from multi-disciplinary backgrounds can experience the block mining process, where the whole journey of building the blockchain and other advanced concepts, including immutability, Merkle tree, and zero knowledge proof, can be revealed, such that technical barriers of learning blockchain can be overcome. (C) 2022 The Author(s). Published by Elsevier B.V.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Game; Teaching; Learning

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 理论模型

【DOI】 10.1016/j.softx.2022.101167

【Author】 Luo, Liya

【Source】MATHEMATICAL PROBLEMS IN ENGINEERING

【影响因子】1.430

【主题类别】

区块链应用-实体经济-版权领域

【Abstract】The emergence of digital copyright in the internet era altered the traditional method of information dissemination and triggered a new copyright revolution, which benefited copyright owners by increasing revenue. However, as a result of the efficiency and convenience of technical capture, the data-based form of copyright faces new challenges and the emergence of a large number of infringement acts has become a barrier to the development of the digital copyright industry. Blockchain technology is decentralized, impenetrable, timestamped, traceable, and capable of smart contracts, among other characteristics. It was initially applied in the financial sector before being expanded to other sectors, resulting in a variety of blockchain + X models. The application of blockchain technology to digital copyright protection represents an attempt to protect copyright owners' rights through the use of a novel technical method and protection concept, and it has a bright future. This study analyzes the current state of digital copyright protection in detail, discusses the benefits of applying blockchain technology in three areas: digital copyright registration and confirmation, transaction monitoring, and evidence maintenance, as well as the potential difficulties associated with the application of blockchain technology, and finally considers and proposes the system design for blockchain technology in the application of digital copyright protection. The study discovered that by utilizing blockchain technology to establish a unified blockchain digital copyright protection platform, it is possible to completely and efficiently record the entire process of copyright registration and confirmation, monitor data capture infringement, provide objective electronic evidence, reduce the cost of copyright owner rights protection, and increase the success rate of judicial remedies.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 观点阐述

【DOI】 10.1155/2022/4641559

【Author】 Nicoli, Nicholas Louca, Soulla Losifidis, Petros

【Source】TRIPLEC-COMMUNICATION CAPITALISM & CRITIQUE

【影响因子】0.000

【主题类别】

区块链治理-市场治理-技术采用

【Abstract】This article explores the potentials of blockchain technology to alleviate and/or intensify some of the problems of the information and communication sector. Divided into four sections, the article first explores the democratic deficit within the context of an informed citizenry. This section includes a study of the current public sphere, post-truth politics and populism. Secondly, the article addresses the current information and communication system by investigating today's social media and an ever-changing digital news media landscape. Thirdly, it explores four prevalent approaches toward reforming the information and communication system: fact-checking and debunking, media literacy, regulation and policy reform, and self-regulation. And fourthly, it addresses the central question of the study, which concerns blockchain technology. This disruptive database technology has potential to offer solutions to regaining trust in the information ecosystem, yet like other approaches, when placed within existing socio-economic structures, it falls short in reversing the democratic deficit.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】democracy; social media; news media; blockchain; disinformation

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 实证数据

【DOI】

【Author】 Ahamad, Bilal Khan, Mohammad Ahmar Khan, Jalaluddin Alghamdi, Abdulrahman Abdullah

【Source】INTERNATIONAL JOURNAL OF EARLY CHILDHOOD SPECIAL EDUCATION

【影响因子】0.000

【主题类别】

区块链应用-实体经济-网安领域

【Abstract】The fourth industrial revolution is often labeled as Industry 4.0 and is considered the age of sophisticated innovations that will pave the way for drastic industrial changes. These machineries include the state-of-the-art concepts, M2M communications, Artificial Intelligence (AI), cloud computing, and the Internet of Things (IoT). The heart of the fourth industrial revolution is the internet of things (IoT) which is referred as the industrial internet of things (IIoT). It plays a crucial role in providing smart solutions and automation processes to inspire the industry and help in terms of high productivity. This paper reviews the importance of cybersecurity in the fourth industrial revolution as a key context of IIoT. We find that in Industry 4.0, IoT and other computer devices have many security vulnerabilities, and a secure tray is required to resolve these threats. In this paper, we emphasis to discuss challenges towards vulnerabilities and optimized block chain technology in Industry 4.0 which can offer an effective solution to these cybersecurity issues. Moreover, this empirical survey highlights potential threats, vulnerabilities, security, and privacy, followed with optimized discussion.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Cybersecurity; Fourth Industrial Revolution; Industrial Internet of Things; Cyber-Physical-System; CyberThreat

【发表时间】2022

【收录时间】2022-09-15

【文献类型】 观点阐述

【DOI】 10.9756/INT-JECSE/V14I3.449