【Author】 Wang, Linjie Tian, Youliang Zhang, Duo
CCF-C
【影响因子】11.648
【主题类别】
区块链技术--
【Abstract】The authentication problem is one of the most significant challenges in the applications of Internet of Things (IoT), and the relationship authentication among smart devices is an effective solution to tackle cross-domain issue. In this article, we first abstract a general undirected graph from the authentication relationship among the smart devices in IoT. Then, we formulate the authentication problem into a signature transitivity problem by incorporating accumulator knowledge and a standard digital signature scheme. As a consequence, the legality of authentication is well-verified by computing the signature and witness of the related edges without worrying about whether the devices belong to the same administrative domain or not. Finally, the efficiency and online time of authority are solved by exploring the blockchain technology, which also leads to the assurance of an online 24-hour third party. The results of analysis and comparison show that the proposed scheme CroDA can well address the practical authentication issue.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Authentication; Security; Digital signatures; Internet of Things; Blockchains; Directed graphs; Standards; Accumulator; authentication; blockchain; cross-domain; undirected graph
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.1109/TII.2021.3116049
【影响因子】3.721
【主题类别】
区块链技术--
【Abstract】Massive IoT devices are used for data collection with the fast development of the Internet-of-things (IoT). For example, wearable devices are used to collect users' health data and conduct health monitoring. However, many private information are involved in medical data. Privacy-preserving data classification scheme (PPDC) provided an effective approach to balance the utility and the privacy of data. In the PPDC schemes, a fully trusted auditor is employed to validate the result of data classification. To reduce trust on the auditor, we provide a simplified version of the PPDC scheme. We propose blockchain-based verifiable privacy-preserving data classification protocol (VeriDC) for medical data. It makes the data center check the classification result without involving an auditor. We provide the system model of the verifiable privacy-preserving data classification protocol in blockchain setting and formalize its security model. By using verifiable oblivious pseudorandom function(verifiable OPRF), we can generate a verifiable proof and post it on blockchain to guarantee the transparency of data classification. We present a concrete construction and prove its security. Finally, we compare VeriDC with the related schemes to evaluate the effectiveness of VeriDC.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Data classification; Verifiable OPRF; Medical data; Privacy protection
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【Author】 Hsu, Ching-Sheng Tu, Shu-Fen Chiu, Pei-Chia
【影响因子】3.666
【主题类别】
区块链应用--
【Abstract】Paper certificates are difficult to carry, easy to lose, easy to forge and with other security issues, which were not solved until the emergence of blockchain technology. Blockchain technology uses one-way hash functions, asymmetric encryption, digital signatures, consensus mechanisms and smart contracts to achieve decentralization, non-tampering and non-repudiation. Various universities have invested in studying blockchain-based diploma systems. However, the current blockchain diplomatic system still has some defects in terms of security. Most systems can only guarantee that the diploma is true and not forgery, but it cannot be confirmed that the diploma holder is the true recipient, and also cannot guarantee that the issuer is recognized by everyone. In this study, cryptography and biometrics are used to strengthen the connection between the diploma and the recipient, and a blockchain deployment framework composed of educational authority and institutions is proposed to make the identity of the diploma issuer credible. In addition, the Hyperledger Fabric application channel is also used to realize access control among organizations in the consortium. Compared with other researches, our research can not only prevent forged diploma, but also can prevent fake educational institutions and bogus recipient. In addition, this study utilized the channels of the Hyperledger Fabric to design access control for different roles in the consortium. Compared with Ethereum using smart contracts to control access rights, Hyperledger Fabric controls access rights by adjusting the configuration of channels, which makes it more flexible to deal with the changes of access rights.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Biometrics; Consortium blockchain; Digital diploma; Hyperledger Fabric
【发表时间】
【收录时间】2022-01-16
【文献类型】 期刊
【Author】 Al-Imamy, Samer Y. Zygiaris, Sotirios
【影响因子】3.666
【主题类别】
区块链应用--
【Abstract】Advising students through their study plans is one of the essential steps towards academic success. The matching of students' needs and courses offered at a university requires comprehensive planning and scheduling. To avoid the problem of mismatch, which usually leads to cancellation courses with low enrollment, a decisive advising process is deemed necessary. Although such a topic received attention from previous work in the area, we could not trace any research references to the use of blockchain in solving the complex advising process. This research explores a topic that is still in its infancy. Blockchain is a new technology proposed to create an effective advising system based on a decisive preregistration process. The proposed system has adopted a hybrid approach integrating the client-server legacy centralized methodology with the blockchain decentralized approach. Ethereum blockchain network is used in the proposed system to create a consensus-validated advising environment. The smart contracts used in such a system offer the students the freedom to modify the courses selections, based on the map of several students tentatively registered in the courses at any particular time. The proposed system has been analyzed, designed, implemented, and applied empirically on students' records extracted from the Banner Enterprise Resources Planning (Banner-ERP) system. The results are promising and provide a proof of concept. The experimental results have also been compared with students' course requirements reaching a satisfactory level of efficiency in the advising process.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Consensus advising; Blockchain technology; Smart contract; Hybrid system; Study plan; Course enrollment; Data management; Study planner and scheduler (SPS) system
【发表时间】
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】3.476
【主题类别】
区块链技术--
【Abstract】In permissioned blockchains, a set of identifiable miners validates transactions and creates new blocks. In scholarship, the proposed solution for the consensus protocol is usually inspired by the Byzantine fault tolerance (BFT) based on voting rather than the proof-of-work (PoW). The advantage of PoW with respect to BFT is that it allows the final user to evaluate the cost required to change a confirmed transaction without the need to trust the consortium of miners. In this paper, we analyse the problems that arise from the application of PoW in permissioned blockchains. In standard PoW, it may be easy for colluded miners to temporarily reach 50% of the total hash power (HP). Moreover, since mining rewards are not usually expected in permissioned contexts, the problem of balancing the computational efforts among the miners becomes crucial. We propose a solution based on a sliding window algorithm to address these problems and analyse its effectiveness in terms of fairness and security. Furthermore, we present a quantitative, analytical model in order to assess its capacity to balance the hash power provided by heterogeneous miners. Our study considers the trade-off between the need to trust the entire consortium of miners guaranteed by the global HP invested by the mining process and the need to prevent collusion among malicious miners aimed at reaching 50% of the total HP. As a result, the model can be used to find the optimal parameters for the sliding window protocol.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchains; Security; Costs; Bitcoin; Companies; Peer-to-peer computing; Licenses; Permissioned blockchain; Markov models; security; fairness
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】3.476
【主题类别】
区块链技术--
【Abstract】This paper presents a privacy persevering framework for a decentralized stock exchange platform, ensuring anonymity and unlinkability of the investors' accounts and their respective trading activities. The proposed framework meets these privacy requirements by (i) anonymizing both the unique account identifier (NIN) and balance information through customized data generalization and distortion techniques and (ii) making trading transactions unlinkable to their original investors by ensuring that both the NIN and balance are k-anonymous; i.e., k accounts belonging to different investors have the same balance. Moreover, to ensure long-term unlinkability, the process of anonymization is repeated at regular time intervals (every trading session). In addition to anonymity and unlinkability characteristics, the proposed framework is augmented with traceability and non-repudiation features. The simulation experiments with several market sizes and types confirm the effectiveness of the proposed framework in achieving full k-anonymity. Furthermore, to assess the overhead of the proposed privacy algorithms on the trading execution time, we conduct several experiments considering different anonymity levels k. We compare the transaction execution time of our proposed platform against a traditional non-privacy-preserving blockchain-based stock exchange. The obtained results for the worst-case scenarios show an acceptable execution time overhead.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; privacy; smart contract; stock exchange; trading; anonymity
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【Author】 Zuo, Yanjun Qi, Zhenyu
【影响因子】3.476
【主题类别】
区块链应用--
【Abstract】The oil and gas industry involves a high level of operational expenditure and often faces high risks of asset safety and operational failures. It has never been so important to monitor and control the oil field operations remotely in real-time to ensure safety and efficiency. The traditional monitoring and control systems for oil field operations are typically centralized, prone to failure, and lack efficiency. Blockchain technology mitigates the centralization problem by creating a decentralized, immutable and transparent control environment for automatic monitoring and control of industrial operations. In this study, we propose a blockchain-based IoT framework for real-time monitoring and control to increase oil field operation and asset efficiency and safety. We present the key components of the framework, including the system architecture, operation flows, algorithms, and smart contracts. As a proof-of-concept modeling, a smart contract is developed and validated on a blockchain test platform. A comparative analysis shows the advantages of using blockchain technology and smart contract to provide trustworthy and automatic monitoring and control for oil field operations.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Internet of Things; blockchain; smart contract; remote monitoring; control; industrial operations
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】3.476
【主题类别】
区块链应用--
【Abstract】Information sharing is essential for coordination and stakeholder integration and is crucial to achieving sustainable supply chain operations. Furthermore, improved information sharing assists retailers by reducing the time spent looking for alternative suppliers to meet the unexpected demand surge during pandemics. Recent advances in networking and distributed ledger technologies have enabled secure, improved information communication and broader connectivity. However, due to system interoperability, information quality, confidentiality, and trust, information cannot be exchanged seamlessly, resulting in the inefficiency of managing supply chain operations. In this paper, we propose a blockchain-based inventory sharing approach based on smart contracts using a private Ethereum network to link suppliers and retailers. Our approach combines blockchain technology with decentralized storage to increase transparency, trust, and security of supply chain transactions. We present a generalized mechanism for secure information sharing that includes comprehensive algorithms to capture supply chain stakeholder interactions that enhance trust among participating entities. The smart contract was developed and validated using the Remix IDE, and the code is made publicly available on Github. We analyze the solution for various security vulnerabilities and provide a detailed cost analysis for various stakeholder transactions in the supply chain. Our solution demonstrates that a blockchain-based approach reduces inefficiencies, is economical, commercially viable, and provides improved information connectivity among supply chain stakeholders in a trusted and secure way.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Supply chains; Costs; Stakeholders; Information sharing; Blockchains; Smart contracts; Security; Inventory sharing; blockchain; Ethereum; transparency; supply chain disruption
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】2.557
【主题类别】
区块链应用--
【Abstract】In order for the Internet of things to facilitate information sharing, the technology needs trustworthy mechanisms to ensure safe communications and reliable interactions. Recently, the Social Internet of Things (Social IoT) is introduced as a novel approach that studies the social relationships among the IoT objects and considers them as a social network. In this paper, we leveraged social information from the network and proposed a lightweight blockchain-based trust management system (LBTM) for Social IoT. By leveraging blockchain technology, the proposed framework provides a decentralized solution that enables trust evaluation. We also provided an implementation of the presented framework using an Ethereum-based private blockchain. The experimental results show the proposed solution achieves high performance in the success rate metric for detecting untrustable nodes. These experiments also demonstrate the advantages of the proposed solution in comparison with other works in terms of rating accuracy and cost-efficiency.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Trust management; IoT; Social IoT; Blockchain; Smart contract; Privacy; Security
【发表时间】
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】1.032
【主题类别】
区块链应用--
【Abstract】Blockchain is a new technology slowly integrating our economy with crytocurrencies such as Bitcoin and many more applications. Bitcoin and other version of it (known as Altcoins) are traded everyday at various cryptocurrency exchanges and have drawn the interest of many investors. These new type of assets are characterised by wild swings in prices and this can lead to great profit as well as large losses. To respond to these dynamics, crypto investors need adequate tools to guide them through their choice of optimal portfolio selection. This paper presents a portfolio selection based on COGARCH and regular vine copula which are able to capture features such as abrupt jumps in prices, heavy-tailed distribution and dependence structure respectively, with the optimal portfolio achieved through the stochastic heuristic algorithm differential evolution known for its global search solution ability. This method shows great performance as compared with other available models and can achieve up to 50% of total returns in some periods of optimization.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】COGARCH; differential evolution; Levy process; portfolio optimization; regular vine copula
【发表时间】
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.1515/snde-2020-0072
【影响因子】0.972
【主题类别】
区块链应用--
【Abstract】In the 4th Industrial Revolution, the healthcare industry is undergoing a paradigm shift from post-care and management systems based on diagnosis and treatment to disease prevention and management based on personal precision medicine. To optimize medical services for individual patients, an open ecosystem for the healthcare industry that allows the exchange and utilization of personal health records (PHRs) is required. However, under the current system of hospital-centered data management, it is difficult to implement the linking and sharing of PHRs in practice. To address this problem, in this study, we present the design and implementation of a patient-centered PHR platform using blockchain technology. This platform achieved transparency and reliability in information management by eliminating the risk of leakage and tampering/altering personal information, which could occur when using a PHR. In addition, the patient-consent system was applied to a PHR; thus, the patient acted as the user with ownership. The proposed blockchain-based PHR platform enables the integration of personal medical information with scattered distribution across multiple hospitals, and allows patients to freely use their health records in their daily lives and emergencies. The proposed platform is expected to serve as a stepping stone for patient-centered healthcare data management and utilization.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Hyperledger Fabric; On-Chain; Off-Chain; Personal Health Record; Patient Consent
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.3837/tiis.2021.12.008
【Author】 Shkulipa, Liudmyla
【影响因子】0.000
【主题类别】
区块链治理--
【Abstract】This paper analyzes accounting publications of the largest publisher by accounting journals, to evaluate the coverage of accounting directions, and indicate the current popularity of International Financial Reporting Standards (IFRS), eXtensible Business Reporting Language (XBRL), and blockchain technology. The source of the 882 accounting articles which support the study is Wiley Online Library. The methods used in this research are based on a cross-sectional survey between the Wiley Online Library and SCImago databases covering the years 2018-2019 only. The results show 33% of the evaluated journals of the Wiley publishers have a high extent of coverage. Among them are the journals with Q1 - the Contemporary Accounting Research (CAR), the Journal of Business Finance and Accounting (JBFA), the Journal of Accounting Research (JAR), the Financial Management journal (FM), and the Journal of Finance (JF). Our study concludes that the most frequent accounting topics published in 2018 and 2019 are management accounting (12%), audit and control (11%), capital ( 11%), and financial statements (8,4%); and the least frequent are IFRS including XBRL (5%) and blockchain technology (2%). We found that the CAR; the Australian Accounting Review (AAR); JBFA; Accounting Perspectives; Abacus have published many topics associated with IFRS and XBRL in 2018-2019. Similarly, Intelligent Systems in Accounting, Finance, and Management (ISAFM); FM; AAR have published on blockchain issues. This study might help scholars to select an appropriate journal for relevant research and inform them about accounting directions least disclosed in 2018 and 2019 and encourage SCImago to include/exclude some journals to/from the accounting category.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Accounting; Bibliometrics; Blockchain; IFRS; XBRL
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】0.000
【主题类别】
区块链技术--
【Abstract】Distributed machine learning can give an adaptable but strong shared condition for the design of trusted AI applications; this is mainly due to lack of privacy of centralised remote learning mechanisms. This notwithstanding, also distributed approaches have been compromised by several attack models (mainly data poisoning): in such a situation, a malicious member of the learning party may inject bad data. As such applications are growing in criticality, learning models must face with security and protection just as with versatility issues. The aim of the paper is to improve these applications by providing extra security features for distributed and federated learning mechanisms: more in the details, the paper examines specific concerns such as the utilisation of blockchain, homomorphic cryptography and meta-modelling techniques to ensure protection as well as other non-functional properties.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】federated learning; cloud computing; security in machine learning; adversarial attacks
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【Author】 Artamonova, N. O. Kapinos, M. M.
【影响因子】0.000
【主题类别】
区块链治理--
【Abstract】Introduction. The growing interest and huge prospects for the development of blockchain technology have indicated a high relevance of research on this ecosystem. Problem Statement. The priority development of patent analysis technologies is a result of rapid changes in the digital environment. In this regard, information support of the problems of innovative development of digital society, which includes the formation of a patent monitoring system for the development of individual technological areas, in particular, blockchain. Purpose. The purpose of this research is to assess the problems of building a patent landscape for determining innovative attractiveness and identifying the development trends of blockchain technology. Materials and Methods. The study has been conducted with the use of international patent resource PATENTSCOPE. The citation of inventions of blockchain technology has been analyzed based on the Derwent database on the Web of Science platform. Results. The problems related to the creation of a patent landscape have been assessed; the modern development indicators and the world trends in the blockchain technology have been analyzed; the features of its development in leading economies and corporations of the world have been identified. The patent activity of firms in the world leading countries at the international and national level has been assessed. The blockchain technological segments have been positioned, with transactions and blockchain platforms found the most attractive ones.The inventions with the greatest number of references, which testifies to their innovative attractiveness have been identified. Conclusions. Patent analytics is a very powerful tool for assessing technological trends by building patent landscapes and monitoring them. Knowledge of the problems related to the study and the construction of patent landscape allows obtaining objective results and correctly interpreting the development trends of the R&D field under review.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】blockchain; patent landscape; inventions; patent statistics; Patentscope database
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.15407/scine17.06.097
【Author】 Torres e Silva, Marcelo Demichelli Carvalho, Rodrigo Baroni de Castro, Jose Marcio Soares, Marcos Vinicius
【影响因子】0.000
【主题类别】
区块链应用--
【Abstract】Introduction: The electronic health record constitutes a support base for technological advances in the Health 4.0 area, an expression alluding to the Fourth Industrial Revolution or Industry 4.0. The innovations in this area include the use of robotics, artificial intelligence and connectivity to provide services to the patient. This research was presupposed on the fact that the use of archivistics methods and Blockchain and Smart Contracts technologies can contribute positively to the management of the patient's electronic health records. The aspects covered by this management are defined in the production, use and destination of health records as well as the protection, security and privacy of your data. Method: The systematic search of the literature and studies of the works in the sub-area Archivology were the methods used to identify and describe as activities of an archivistics management, the attributes of the technologies Blockchain and Smart Contracts and the relationship between these themes with the governance of health records. The research had an exploratory, descriptive, qualitative character and a constructivist ontological perspective. Result: The studies contributed to finding gaps in the legislation and in the production of scientific articles on the subject investigated, as well as to identify possible technological solutions to problem-solving of technical issues that had not yet been clarified. Conclusion: The participation of archivists in research related to archivistics management associated with Blockchain and Smart Contracts technologies is necessary to contribute to the evolution of record management, of which the patient's electronic health records are part.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Eletronic health records; Archivistics; Blockchain; Smart Contracts; Health 4.0
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.5380/atoz.v10i3.81477
【影响因子】0.000
【主题类别】
区块链治理--
【Abstract】Introduction: The electronic health record constitutes a support base for technological advances in the Health 4.0 area, an expression alluding to the Fourth Industrial Revolution or Industry 4.0. The innovations in this area include the use of robotics, artificial intelligence and connectivity to provide services to the patient. This research was presupposed on the fact that the use of archivistics methods and Blockchain and Smart Contracts technologies can contribute positively to the management of the patient's electronic health records. The aspects covered by this management are defined in the production, use and destination of health records as well as the protection, security and privacy of your data. Method: The systematic search of the literature and studies of the works in the sub-area Archivology were the methods used to identify and describe as activities of an archivistics management, the attributes of the technologies Blockchain and Smart Contracts and the relationship between these themes with the governance of health records. The research had an exploratory, descriptive, qualitative character and a constructivist ontological perspective. Result: The studies contributed to finding gaps in the legislation and in the production of scientific articles on the subject investigated, as well as to identify possible technological solutions to problem-solving of technical issues that had not yet been clarified. Conclusion: The participation of archivists in research related to archivistics management associated with Blockchain and Smart Contracts technologies is necessary to contribute to the evolution of record management, of which the patient's electronic health records are part.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Eletronic health records; Archivistics; Blockchain; Smart Contracts; Health 4.0
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【DOI】 10.5380/atoz.v10i3.81267
【Author】 Bu, Helun Kuwabara, Kazuhiro
【影响因子】0.000
【主题类别】
区块链应用--
【Abstract】This paper presents the use of gamified crowdsourcing for knowledge content validation. Constructing a high-quality knowledge base is crucial for building an intelligent system. We develop a refinement process for the knowledge base of our word retrieval assistant system, where each piece of knowledge is represented as a triple. To validate triples acquired from various sources, we introduce yes/no quizzes and present them to many casual users for their inputs. Only the triples voted yes by a sufficient number of users are incorporated into the main knowledge base. Users are incentivized by rewards based on their contribution to the validation process. To ensure transparency of the reward-giving process, blockchain is utilized to store logs of the users' inputs from which the rewards are calculated. Different strategies are also proposed for selecting the next quiz. The simulation results indicate that the proposed approach has the potential to validate knowledge contents. This paper is a revised version of our conference paper presented at the 12th Asian Conference on Intelligent Information and Database Systems (ACIIDS 2020).
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; knowledge refinement; gamified crowdsourcing
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【Author】 Vijayalakshmi, J. Murugan, A.
【影响因子】0.000
【主题类别】
区块链技术--
【Abstract】Currently, our global financial market faces lots of trouble due to migration from fiat currency to cryptocurrency and its underlying blockchain technology. Blockchain provides trust in a decentralised way for storing, managing, and retrieving the transactions. The double-spending issue arises due to the erroneous transaction verification mechanism in the blockchain. Research has shown that transaction malleability like double-spending creates millions of bitcoins losses to the owners as well as few bitcoin exchanges. This research aims to detect and prevent the double-spending of bitcoins in single and multiple blocks. In this context, double-spend data in a single block is identified using the DPL2A method. Further, the original transaction from the double-spend transaction list is identified using the ACRT method which acts as a prevention of double-spend in a forthcoming occurrence. Similarly, double-spend data in multiple blocks are identified using MBDTD along with the Cognizant Merkle tree. Finally, a system named F2DP is constructed to detect and prevent the double-spend data in inter and intra blocks of the blockchain. The result indicates these methods will act best for double-spend detection and prevention with a limited set of transaction records. Further research is needed to increase the scalability of transaction records.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】cryptocurrency; bitcoin; double-spending; UTXO; Merkle
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】0.000
【主题类别】
区块链治理--
【Abstract】Despite the increase in literature on financial innovation as a force of change in the financial system, most contributions fail to analyze the relationship between the socio-institutional and technological design of cryptocurrencies. This paper aims to fill this gap by providing a case study of Bitcoin, the most representative of the virtual and cryptocurrencies. We begin by addressing the concept of financial innovation as a social phenomenon embedded in networks of users, technologists, regulations, institutions, culture and history. Secondly, we examine the disruptive and evolutionary nature of the Bitcoin, comparing it with the characteristics of legal tender money. The main conclusions indicate that although Bitcoin represents a disruptive technology in the process of monetary creation through a peer-to-peer network, it is not a new conception of money in its institutional dimension.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Money; cryptocurrencies; Bitcoin; financial innovation; financialization; incremental innovation; disruptive innovation
【发表时间】
【收录时间】2022-01-16
【文献类型】 期刊
【影响因子】3.476
【主题类别】
综述--
【Abstract】Internet of Things (IoT) is the new paradigm to the scaling nature of things and their elements, interconnected, exchanging data over a network supported with nodes. The Ubiquitous use of tiny devices and embedded sensor frameworks has pushed IoT to the forefront of emerging technologies used in many applications like peer-to-peer networks, smart energy grids, home and building automation, vehicle to vehicle communication, and wearable computing devices. This massive growth and extensive use brought forth security risks that could hinder its commencement in many novel applications. The number of interconnected devices leads the way to several entry points for intruders and, along with it, security risks. The sensitive nature of the IoT applications such as health, automation, and energy grids cannot afford security risks. Traditional security mechanisms will not design or develop to secure such an emerging technology as IoT. Existing technologies have to be relied on with the non-existence of security mechanisms for this purpose. Distributed Ledger Technology (DLT) is one such technology that can reduce the security risks in IoT. The central node vulnerability that can compromise the whole system can be mitigated by eliminating the need for a central node by using the distributed ledger. Blockchain, a distributed ledger technology, has attracted tremendous attention and harnessed in itself a real-world value. However, computationally costly with limited scalability is not entirely suited for the IoT environment. IoT Application (IOTA) technology is the distributed ledger technology that can provide unlimited scalability specifically suitable for the IoT industry. This survey provides an in-depth introduction to how blockchain performs and its constraints in its nature as a generic platform for DLT. In contrast, IOTA is introduced as the technology for IoT, the next-generation blockchain overcoming blockchain's limitations for its use in IoT.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Internet of Things; Security; Blockchains; Monitoring; Distributed ledger; Radar tracking; Costs; IoT; security; IOTA; blockchain
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 综述
【Author】 Lee, Suhyeon Kim, Seungjoo
【影响因子】3.476
【主题类别】
综述--
【Abstract】Targets of cyber crime are not exclusive to the private sector. Successful cyber attacks on nation-states have proved that cyber threats can jeopardize significant national interests. In response, nation-states have begun to handle cyber threats at the national defense level, which is titled 'cyber defense.' The cyber defense sector is related to national security, therefore requires robust security technology. Contrary to normal systems, blockchain provides strong security properties without a centralized control entity, and as such its application in the cyber defense field is under the spotlight. In this paper, we present opportunities blockchain provides for cyber defense, research and national projects, and limitations. We constructed a survey of government documents, interviews, related news, technical reports, and research papers from 2016 to 2021. As a result, our research contributes to reducing the gap in blockchain for cyber defense by systematically conducting research and analysis. In our research, we found that not only research but also government-led plans are actively promoting blockchain, which demonstrates that blockchain will play a remarkable role in cyber defense. This paper concludes with suggestions for future research in aspects of the blockchain technology, evaluation, and survey.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchains; Bitcoin; Security; Computer crime; Smart contracts; Licenses; Data structures; Blockchain; cyber security; cyber defense; military; survey
【发表时间】2022
【收录时间】2022-01-16
【文献类型】 综述
【影响因子】2.303
【主题类别】
综述--
【Abstract】The usage of 5G-enabled IoT devices is rising exponentially as humans tend to shift towards a more automated lifestyle. A significant amount of IoT devices is expected to join the network as IoT has allowed interconnection and transmission among global devices which has resulted in generation of enormous diverse data. There is a requirement for a real-time, latency-specific, and network efficient computing paradigm in 5G-enabled smart city infrastructure. Fog computing presents trustworthy solutions to tackle these issues by combining edge users. They store, control, communicate, configure, measure, and manage big data produced by IoT devices. In this survey, the authors have performed a comprehensive study on fog computing and have classified various such paradigms. The authors have performed an extensive evaluation of features, along with the algorithmic and architectural packages deployed in the framework. This survey covers various 5G-enabled Industrial IoT (I-IoT) application settings and unleashes various fog framework-based solutions for numerous real-world application challenges in sustainable smart city infrastructures. Numerous contributions of fog computing towards latency-sensitive applications like healthcare 4.0, smart conveyance, smart waste management, smart energy handling, etc. has also been discussed. Fog computing framework apart from the abilities, also inherits various security flaws from cloud computing paradigm, and these flaws needs to be rectified in the interest of the end user. This survey presents a comprehensive review of state-of-the-art literature schemes to preserve the integrity of data in sustainable smart city infrastructure. Diverse phrases employed for investigating numerous security and privacy concerns in 5G enabled technologies are discussed in a sophisticated approach.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Fog computing; Internet of things; Latency; Architecture; Algorithms; Applications; Security; Privacy
【发表时间】
【收录时间】2022-01-16
【文献类型】 综述
【影响因子】0.000
【主题类别】
综述--
【Abstract】Introduction: through government portals, it is possible to increase transparency and the participation of society in government. Blockchain technology has been touted as an alternative to increase government transparency and reduce costs in the public sector. In this context, the article aimed to answer the main question: what is the current panorama of blockchain technology applications in the public sector? Method: it carries out a systematic literature review using the Google Scholar index, with a frame of works published between 2008 and 2018. The following keywords were used: government transparency, open government, e-government,blockchain applications, blockchain application, government transparency, open government, public sector, e-government, blockchain applications and blockchain application. Results: it detects several areas of interest to the public sector for blockchain technology deployments, as well as areas where it is already in use. Conclusion: the theme has gained prominence in several areas, as can be seen through this research, which found reports of use in the following sectors: electricity, real estate, medicine, identity management, agriculture, commercial transactions, financial market, taxation, cities smartphones, smart contracts, government administration, and electronic voting, among others. This systematic literature review indicates that the technology on screen has the potential to help the public sector.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Boolean operators; Logic; Search expressions; Boolean algebra; Aristotle
【发表时间】2021
【收录时间】2022-01-16
【文献类型】 综述
【Author】 Becker, Katrin
【影响因子】0.000
【主题类别】
综述--
【Abstract】This article focusses on the social and legal implications that blockchain technology brings about, not only due to its ideological framework, but also, and especially, due to the concept of law it inaugurates. Thus, this article claims, that, by interlocking technological and legal structures, blockchain technology initiates a profound displacement of legal symbolics and imaginaries. It shows how blockchain law, by emancipating itself from three essential dimensions of law-language, territory, and the body-implies a profound disruption of how we perceive law and its legitimacy. Starting with an overview of the technological details of blockchain, the paper then addresses its ideological context and traces the underlying ideas, values and functions and their relation with-and impact on-the general perception of law and legal issues. By critically assessing the claim that blockchain will liberate the subject from any heteronymic constraints, this paper analyses to what extent this technology has social and legal implications that reach far beyond its virtual, purely blockchain-related scope of applications-and why this technology should matter to us all.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain; Interpretation; Legal symbolics; Social imaginary; Language; Body; Lex cryptographica
【发表时间】
【收录时间】2022-01-16
【文献类型】 综述
【Author】 Srivastava, Ayushi Dashora, Kavya
【影响因子】0.000
【主题类别】
综述--
【Abstract】Purpose This study aims to explore and analyze the application of blockchain technology (BKCT) in agrifood supply chain management (AFSM). Design/methodology/approach A systematic literature review (SLR) using Scopus, Emerald and Web of Science covering publications from 2016 to 2021 (till June). Out of 429 papers, 89 papers were shortlisted from journals based on citation analysis. The citation analysis was followed by a content analysis was for an in-depth analysis. Findings Regarding the application of BKCT in the agrifood supply chain, the study highlights the issue of food safety, traceability, transparency, eliminating intermediaries and integrating Internet of things (IoT) with BKCT as prominent applications in the agrifood sector. The study also uses the case of honey supply chain to use the explored applications in the agrifood sector and provides a traceability solution based on blockchain integrated with IoT. The challenges of BKCT as identified in the study are scalability, privacy, security, lack of regulations and lack of skills and training. Research limitations/implications The review considers only academic papers obtained from specific databases with their relevance based on number of citations. Originality/value The study contributes to filling the existing research gap through this SLR on the application of BKCT in AFSCM. The content analysis further assists in exploring the benefits and challenges of BKCT in the agrifood sector. Thus, the academic articles selected aid in this process.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Blockchain technology; Internet of things; Agrifood supply chain; Supply chain management
【发表时间】
【收录时间】2022-01-16
【文献类型】 综述
【DOI】 10.1108/BIJ-08-2021-0495
【Author】 Ozili, Peterson K.
【影响因子】0.000
【主题类别】
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【Abstract】Purpose The purpose of this paper is to gain some insight into central bank digital currency research by reviewing the recent advances in central bank digital currency (CBDC) research in a way that would help researchers, policy makers and practitioners to take a closer look at CBDC. Design/methodology/approach The paper uses a systematic literature review methodology. Findings The review shows a general consensus that a CBDC is a liability of the central bank and it has cash-like attributes. The review also presents the motivation and benefits of issuing a CBDC such as the need to increase financial inclusion, the need to improve the conduct of monetary policy and to foster efficient digital payments. The review also shows that many central banks are researching the potential to issue CBDCs due to its many benefits. However, a number of studies have called for caution against over-optimism about the potential benefits of CBDC due to the limiting nature of CBDC design and its inability to meet multiple competing goals. Suggested areas for future research are identified such as the need to find the optimal CBDC design that meets all competing objectives, the need for empirical evidence on the effect of CBDC on the cost of credit and financial stability, and the need to find a balance between limiting the CBDC holdings of users and allowing users to hold as much CBDC as they want, and there is a need to undertake country-specific and regional case studies of CBDC design. Originality/value This review paper offers new areas for further research in central bank digital currencies.
你可以尝试使用大模型来生成摘要 立即生成
【Keywords】Digital currency; Money; Central bank; Central bank digital currency; CBDC; Digital finance; Cryptocurrency; Financial inclusion; CBDC design; Blockchain; Distributed ledger technology; E42; E44; E52; E58
【发表时间】
【收录时间】2022-01-16
【文献类型】 综述