【Author】 Saini, Akanksha Wijaya, Dimaz Kaur, Navneesh Xiang, Yong Gao, Longxiang

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】In recent years, several blockchain-based models have emerged to provide a secure way to store and access sensitive electronic medical records (EMRs) across the healthcare sector. These records are of different priorities and business requirements. From our comprehensive literature review, we observe that the existing models have no provision of prioritizing the EMR transactions. This critically affects the quick and streamline sharing of emergency EMRs in a smart healthcare environment. Furthermore, the lack of prioritization significantly restricts the optimal usage of the blockchain network. Motivated by this, we first propose a lightweight and deterministic method to prioritize the flow of emergency healthcare transactions through the smart contract. We also propose logical stateless transaction models for different entities involved in the system with varying levels of trust. Finally, the performance of the model based on the private Ethereum is verified and it outperforms the existing benchmark model in terms of usefulness in the healthcare setting and computation overhead with the use of a simple prioritizing algorithm. The obtained results demonstrate the feasibility of the proposed scheme in the real-time smart healthcare system.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Hospitals; Internet of Things; Smart contracts; Hafnium; Electronic medical records; Sorting; Blockchain; electronic medical records (EMRs); prioritization; smart contract; smart healthcare; transaction models

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 实证数据

【DOI】 10.1109/JIOT.2022.3145406

【Author】 Huang, Xiaohong Zhang, Yong Li, Dandan Han, Lu

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链应用-实体经济-能源领域

【Abstract】In recent years, microgrids have attracted much attention as one of the typical applications of the Internet of Things (IoT). With the development of renewable energy, a bilayer energy-trading scenario of microgrids has emerged. In the upper layer, the microgrids trade energy with each other, and in the lower layer, users trade energy within the microgrid. Traditional management schemes based on the cooperation mode or island mode of the microgrids can no longer meet the needs of energy trading. In this article, we propose an energy-trading management solution for the bilayer energy-trading scenario. In order to maximize the bilayer's [i.e., users' and microgrid operators' (MGOs)] utility functions under the condition of the local energy supply and demand, we propose a multiobjective optimization model. To solve the optimization model, we give a solution energy-trading management algorithm (ETMA) based on the nondominated sorting genetic algorithm (NSGA). Moreover, the proposed energy-trading framework that is based on the multiblockchain ensures the security and privacy of energy trading, and a consensus mechanism named the Delegated Proof of Reputation (DPoR) is proposed to urge users to complete the transaction according to their promised trading schemes. Experiments based on the real data of Guizhou are done to evaluate the performance of the proposed optimization model. The results show that our proposed model can achieve better performance in terms of users' and MGOs' utility functions in the bilayer energy-trading scenario compared with the traditional models.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Microgrids; Optimization; Costs; Security; Renewable energy sources; Blockchains; Privacy; Blockchain; energy Internet; energy trading; microgrid

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 实证数据

【DOI】 10.1109/JIOT.2022.3142815

【Author】 Ye, Jingwei Kang, Xin Liang, Ying-Chang Sun, Sumei

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-协同技术-隐私计算

【Abstract】Blockchain is a promising technology for future dynamic spectrum access (DSA) management due to its decentralization, immutability, and traceability. However, many challenges need to be addressed to integrate the blockchain to DSA, such as the trustworthiness of participating nodes' spectrum sensing results, privacy protection of sensing nodes' identities, and affordable lightweight consensus algorithms for IoT devices. In this article, we propose a trust-centric privacy-preserving blockchain for DSA in IoT networks. To be specific, we propose a trust evaluation mechanism to evaluate the trustworthiness of sensing nodes and design a Proof-of-Trust (PoT) consensus mechanism to build a scalable blockchain with high transaction-per-second (TPS). Moreover, a privacy protection scheme is proposed to protect sensors' real-time geolocation information when they upload sensing data to the blockchain. Two smart contracts are designed to make the whole procedure (spectrum sensing, spectrum auction, and spectrum allocation) run automatically. Simulation results demonstrate the expected computation cost of the PoT consensus algorithm for reliable nodes is low, and the cooperative sensing performance is improved with the help of the trust evaluation mechanism. In addition, incentivization and security are also analyzed, which show that our system can not only encourage nodes' participation, but also resist many kinds of attacks which are frequently arise in the trust management mechanism and blockchain-based IoT systems.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchains; Sensors; Smart contracts; Consensus algorithm; Privacy; Protocols; Radio spectrum management; Blockchain; consensus algorithm; cooperative spectrum sensing; dynamic spectrum access (DSA); trust model

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.1109/JIOT.2022.3142989

【Author】 Wang, Peng Xu, Ning Zhang, Haibin Sun, Wen Benslimane, Abderrahim

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链技术-协同技术-物联网

【Abstract】The Internet of Things (IoT), while providing comprehensive interconnection and ubiquitous services, poses security issues by enabling resources sharing among various devices from different untrusted authorities. Blockchain, as a distributed ledger, provides a traceable and verifiable platform to ensure the secure access control in IoT. The existing works based on blockchain may bring up intolerable computing overhead and delay to the lightweight IoT devices. In this article, we propose a dynamic and lightweight attribute-based access control framework for blockchain-empowered IoT, to achieve secure and fine-grained authorization. The proposed scheme allows access to resources by evaluating attributes, operations, and the environment relevant to a request. The access policy is executed through smart contract in blockchain for security and flexibility. To further adapt to IoT device constraints, we design a access control framework based on decentralized application (DApp), which can maintain tamper proof in a timely manner and be adapt to the delay-intolerant application. When delay-intolerant access is required, access can be allowed according to local replica of the blockchain, without a consensus of blockchain network. Considering the time-varying attributes of IoT devices, a trust management scheme is proposed based on the Markov chain to resist the security fluctuation caused by the vulnerability of IoT devices. In the experiments, we deploy our system prototype on Ethereum to evaluate the feasibility and effectiveness of the scheme. The results show the proposed scheme can achieve secure, high throughput, and flexible access control 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; Smart contracts; Authorization; Smart homes; Trust management; Logic gates; Access control; blockchain; Internet of Things (IoT); smart contract; trust management

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.1109/JIOT.2021.3125091

【Author】 Bao, Haiyong Ren, Binbin Li, Beibei Kong, Qinglei

【Source】IEEE INTERNET OF THINGS JOURNAL CCF-C

【影响因子】10.238

【主题类别】

区块链应用-实体经济-能源领域

【Abstract】As the future energy infrastructure, smart grid aims to overcome the disadvantages of traditional power grid, e.g., low efficiency and unstable service. However, the frequent collection and analysis of the user's electricity data may bring various security and privacy threats. Besides, the traditional centralized data storage model in the smart grid is prone to the single point of failure. To address these challenges, in this article, for fair and secure smart grid communication, a blockchain-based novel paradigm, named BBNP, is proposed. Specifically, based on the pseudorandom function and auxiliary information generation and sharing technology, a lightweight data aggregation protocol is designed first to protect the user's data privacy and ensure communication confidentiality. Then, a novel efficient authentication mechanism is proposed to generate and share session keys in a noninteractive way, which is leveraged for MAC authentication to achieve data integrity of the transmitted data. After that, based on the subjective logic reputation model, a blockchain node consensus mechanism is studied to efficiently store smart grid big data and effectively solve the single point failure problem. By constructing the long-term reputation model for consensus nodes (CNs) and integrating batch verification technology, the problems of CN fair selection and scalability of large-scale nodes are solved simultaneously. Finally, the performance evaluation indicates that BBNP outperforms the state-of-the-art similar schemes in computing complexity, communication cost, system availability, and fairness of block generation.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Smart grids; Blockchains; Data integrity; Data models; Data aggregation; Privacy; Data privacy; Blockchain; data aggregation; reputation; smart grid

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 实证数据

【DOI】 10.1109/JIOT.2021.3107301

【Author】 Mershad, Khaleel

【Source】VEHICULAR COMMUNICATIONS

【影响因子】8.373

【主题类别】

区块链应用-实体经济-无人机领域

【Abstract】Several types of networks that comprise unmanned aerial vehicles (UAV or drone) are being utilized in important applications such as emergency response, environment and infrastructure monitoring, defense and security, and commerce. In such networks, swarms of UAVs cooperate in executing one or more missions to achieve the application's objectives. The UAVs communicate with terrestrial networks by connecting to fixed or mobile ground control stations (GCS). The ability of drones to connect to online applications and offer services to Internet users has led to the proliferation of the Internet of Drones (IoD). However, IoD applications are highly vulnerable to many types of cyberattacks. Hence, mechanisms must be deployed to secure the IoD operations and data. Recently, the blockchain has been proposed as a solution to detect and prevent malicious attacks on the UAV network (UAVN). Due to the UAV's limited resources, it becomes a challenge to integrate the blockchain into the IoD. In this paper, we propose a model that enables a drone to store the important data that it requires during its flight within a lightweight blockchain system. In addition, we propose a new blockchain consensus mechanism in which several miners produce their blocks in parallel, which decreases the time needed to add transactions securely to the blockchain and meets the requirements of delay-sensitive applications. Our simulations prove the advantages of the proposed model in decreasing the transaction-to-blockchain delay, the average drone energy consumption, and the blockchain block size as compared to other IoD blockchain systems. (C) 2022 Elsevier Inc. All rights reserved.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Internet of Drones; UAV; Blockchain; Data security; Consensus protocol; Lightweight cryptography

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 实验仿真

【DOI】 10.1016/j.vehcom.2022.100495

【Author】 Latif, Zohaib Lee, Choonhwa Sharif, Kashif Helal, Sumi

【Source】IEEE SENSORS JOURNAL

【影响因子】4.325

【主题类别】

区块链技术-协同技术-边缘计算

【Abstract】In recent years, the Internet of Things (IoT) has gained tremendous attention and exponential growth in every domain of life. However, these devices face many challenges due to the limited resources in terms of storage and computation. Collaborative Edge Computing (CEC) is an emerging paradigm that solves these issues where multiple edge devices share computational resources to collaborate and satisfy user requirements. The fundamental issues in CEC are to make an offloading decision while considering the flow scheduling and balancing the load over multiple edge devices. Moreover, the efficient resource allocation of edge nodes is challenging, particularly when IoT devices are more vulnerable and become resource-hungry. The combination of Software Defined Networking (SDN) and Blockchain (BC) can play a vital role in solving the issues mentioned above. This paper presents a token-based resource management mechanism as SDBlockEdge by integrating these two technologies. The programming abstractions and global view of the SDN can help offload decision and flow scheduling, whereas the smart contract mechanism of BC can help control the abnormal behavior of IoT devices. We design the Resource Management Controller (RMC), which collaborates with the SDN controller to keep the record of available resources. It helps for offloading decisions and balancing the load over edge servers, whereas the SDN controller helps consider the less loaded path, while offloading reduces the task completion time. Moreover, the resources are allocated against tokens, and smart contracts are used to pay the cost of these resources. The proposed approach is implemented in Mininet_WiFi and Containernet, where docker hosts act as edge nodes with different IoT devices. The results after the extensive simulation show the effectiveness of the proposed approach.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Internet of Things; Task analysis; Servers; Behavioral sciences; Smart contracts; Blockchains; Software defined networking; Software defined networking (SDN); Internet of Things (IoT); blockchain; edge computing; resource management

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.1109/JSEN.2022.3184689

【Author】 Chey, Hyoung-kyu

【Source】REVIEW OF INTERNATIONAL POLITICAL ECONOMY

【影响因子】4.146

【主题类别】

区块链治理-市场治理-数字货币

【Abstract】Despite the exploding interest in cryptocurrencies in the markets in recent years, the political economy study of them, in particular as money, remains underdeveloped. This seems quite surprising, given the otherwise extensive research on money and finance in the international political economy (IPE) literature. This essay calls for a greater engagement of IPE scholarship in analyzing cryptocurrencies as money. It argues first that theories of money-in particular, the "commodity theory of money" and the "state theory of money"-could provide valuable theoretical insights for the IPE study of cryptocurrencies as money. It then suggests how these insights can be incorporated into that research, drawing particular attention to analysis of the political dynamics surrounding cryptocurrencies' development as money.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Bitcoin; commodity theory of money; cryptoasset; cryptocurrency; digital currency; digital money; theories of money; state theory of money

【发表时间】

【收录时间】2022-09-03

【文献类型】 观点阐述

【DOI】 10.1080/09692290.2022.2109188

【Author】 Rana, Sumit Kumar Rana, Sanjeev Kumar Nisar, Kashif Ibrahim, Ag Asri Ag Rana, Arun Kumar Goyal, Nitin Chawla, Paras

【Source】SUSTAINABILITY

【影响因子】3.889

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Healthcare, one of the most important industries, is data-oriented, but most of the research in this industry focuses on incorporating the internet of things (IoT) or connecting medical equipment. Very few researchers are looking at the data generated in the healthcare industry. Data are very important tools in this competitive world, as they can be integrated with artificial intelligence (AI) to promote sustainability. Healthcare data include the health records of patients, drug-related data, clinical trials data, data from various medical equipment, etc. Most of the data management processes are manual, time-consuming, and error-prone. Even then, different healthcare industries do not trust each other to share and collaborate on data. Distributed ledger technology is being used for innovations in different sectors including healthcare. This technology can be incorporated to maintain and exchange data between different healthcare organizations, such as hospitals, insurance companies, laboratories, pharmacies, etc. Various attributes of this technology, such as its immutability, transparency, provenance etc., can bring trust and security to the domain of the healthcare sector. In this paper, a decentralized access control model is proposed to enable the secure interoperability of different healthcare organizations. This model uses the Ethereum blockchain for its implementation. This model interfaces patients, doctors, chemists, and insurance companies, empowering the consistent and secure exchange of data. The major concerns are maintaining a history of the transactions and avoiding unauthorized updates in health records. Any transaction that changes the state of the data is reflected in the distributed ledger and can be easily traced with this model. Only authorized entities can access their respective data. Even the administrator will not be able to modify any medical records.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】blockchain; content identifier; digitalization; artificial intelligence; blockchain

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.3390/su14159471

【Author】 Liao, Changhua Lu, Qihui Shui, Ying

【Source】SUSTAINABILITY

【影响因子】3.889

【主题类别】

区块链应用-实体经济-供应链

【Abstract】Aiming to explore whether governments should choose anti-pandemic or subsidy strategies in the post-pandemic era, this study constructed a three-level food supply chain that was composed of a leading third-party logistics provider, a supplier and a retailer, in which the third-party logistics provider used blockchain technology for food traceability to address consumer concerns about food safety. We then used game theory to analyze the pricing decisions, traceability levels, anti-pandemic effort levels and subsidy levels of the supply chain under different governmental anti-pandemic or subsidy strategies. Our results showed that in all scenarios, the higher the consumer preference for traceability information, the larger the traceability levels and anti-pandemic effort levels and the more favorable the outcome for all parties; thus, governments should improve consumer awareness of pandemic prevention. For the benefit of all parties, governments should adopt anti-pandemic and subsidy strategies simultaneously, even in the post-pandemic era. Interestingly, for the scenario in which governments could only adopt one strategy, when the cost coefficient of traceability was small, the governmental subsidies would actually lead to lower traceability levels of the 3PL. This study could provide decision-making references for governments during the post-pandemic era and a new possibility for blockchain application.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】three-level food supply chain; blockchain technology; governmental strategy selection; traceability; game theory

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.3390/su14159497

【Author】 Wang, Xixi Guan, Yepeng

【Source】SENSORS

【影响因子】3.847

【主题类别】

区块链技术-核心技术-共识机制

【Abstract】A blockchain has been applied in many areas, such as cryptocurrency, smart cities and digital finance. The consensus protocol is the core part of the blockchain network, which addresses the problem of transaction consistency among the involved participants. However, the scalability, efficiency and security of the consensus protocol are greatly restricted with the increasing number of nodes. A Hierarchy Byzantine Fault Tolerance consensus protocol (HBFT) based on node reputation has been proposed. The two-layer hierarchy structure is designed to improve the scalability by assigning nodes to different layers. Each node only needs to exchange messages within its group, which deducts the communication complexity between nodes. Specifically, a reputation model is proposed to distinguish normal nodes from malicious ones by a punish and reward mechanism. It is applied to ensure that the malicious node merely existing in the bottom layer and the communication complexity in the high layer can be further lowered. Finally, a random selection mechanism is applied in the selection of the leader node. The mechanism can ensure the security of the blockchain network with the characteristics of unpredictability and randomicity. Some experimental results demonstrated that the proposed consensus protocol has excellent performance in comparison to some state-of-the-art models.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】consensus protocol; reputation model; hierarchy structure; random selection mechanism

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.3390/s22155887

【Author】 Vyas, Sonali Gupta, Sachin Tarar, Sandhya Omarov, Batyrkhan Pant, Bhasker Bangare, Jyoti L. Bhowmik, Tapas

【Source】JOURNAL OF FOOD QUALITY

【影响因子】3.200

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】The term blockchain is mainly regarded as the distributed transaction which is mainly comprised of different blocks, and each set tends to represent the data that are being associated with the previous blocks. The blockchain is mainly managed through peer-to-peer networks which comparatively involves in adhering to the protocol of authenticating various blocks to form the blockchain. The usage of blockchain technology has been increasingly used in different fields, and healthcare services are now using blockchain for better patient delivery, detecting disease, and other aspects. The scope of the proposed study is that this study has exploited the function of a blockchain-enabled big data network to support medical professionals in giving better treatment modalities and delivering better patient care. The application of a new generation of smart block chains such as Ethereum and NEM is now offering better services and features in creating blockchain-based healthcare data management and hence support healthcare centers, medical practitioners, nurses, radiologists, and patients for better healthcare management. The application of blockchain technology in big data networks supports adding more value as it results in enhanced data quality, accessibility, and support in creating better security and safety of data and information, which is highly essential in the medical industry. Blockchain technology enables big data technologies enabled in supporting medical practitioners in addressing various healthcare ailments; one of the major diseases impacting many people around the world is diabetes. Patients with such ailments tend to generate more data and information related to the disease and health-related aspects. Hence, this information requires being maintained and analyzed, so that superior healthcare services can be provided. This study is more involved in the investigation of blockchain technology through a big data network enabled in offering better care for elderly individuals who have been affected due to diabetes, the researchers propose to choose a questionnaire method to collect the data from nearly 169 respondents, and these data were then analyzed using SPSS data package. The analyst used percentage analysis, correlation analysis, and chi-square test to analyze the data which has been collated by the researchers. The results and discussion show in detail the major aspects of blockchain technology in supporting healthcare professionals for better diabetes care management for elderly individuals.

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】2022-09-03

【文献类型】 实证数据

【DOI】 10.1155/2022/8760032

【Author】 Xi, Peng Zhang, Xinglong Wang, Lian Liu, Wenjuan Peng, Shaoliang

【Source】APPLIED SCIENCES-BASEL

【影响因子】2.838

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Medical data contains multiple records of patient data that are important for subsequent treatment and future research. However, it needs to be stored and shared securely to protect the privacy of the data. Blockchain is widely used in the management of healthcare data because of its decentralized and tamper-proof features. In order to study the development of blockchain in healthcare, this paper evaluates it from various perspectives. We analyze blockchain-based approaches from different application scenarios. These are blockchain-based electronic medical record sharing, blockchain and the Internet of Medical Things and blockchain-based federal learning. The results show that blockchain and smart contracts have a natural advantage in the field of medical data since they are tamper-proof and traceable. Finally, the challenges and future directions of blockchain in healthcare are discussed, which can help drive the field forward.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】blockchain; healthcare data; privacy; security

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 观点阐述

【DOI】 10.3390/app12157912

【Author】 Soltani, Reza Zaman, Marzia Joshi, Rohit Sampalli, Srinivas

【Source】APPLIED SCIENCES-BASEL

【影响因子】2.838

【主题类别】

区块链技术-核心技术-分布式存储

【Abstract】With the success of Bitcoin and the introduction of different uses of Blockchain, such as smart contracts in Ethereum, many researchers and industries have turned their attention to applications that use this technology. In response to the advantages and disadvantages of Blockchain, similar technologies have emerged with alterations to the original structure. Distributed ledger technology (DLT) is a generalized distributed technology encompassing these new variants. Several studies have examined the challenges and applications of Blockchain technology. This article explores the possibilities of using different DLTs to solve traditional distributed computing problems based on their advantages and disadvantages. In this paper, we provide an overview and comparison of different DLTs, such as Hashgraph, Tangle, Blockchains, Side Chain and Holochain. The main objective of the article is to examine whether distributed ledger technologies can replace traditional computational methods in other areas instead of traditional methods. Based on the primary keywords, we conducted a systematic review of more than 200 articles. Based on the data extracted from articles related to the use of DLT, we conclude that that DLTs can complement other methods, but cannot completely replace them. Furthermore, several DLTs such as Sidechain, Holochain and Hashgraph are still in their infancy, and we foresee much research work in this area in the coming years.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】blockchain technology; distributed ledger technology (DLT); applications of DLT

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 综述

【DOI】 10.3390/app12157898

【Author】 Choi, Sangsu Yoon, Kajoong Kim, Miae Yoo, Jintak Lee, Bonghyeon Song, Inho Woo, Jungyub

【Source】APPLIED SCIENCES-BASEL

【影响因子】2.838

【主题类别】

区块链应用-虚拟经济-元宇宙

【Abstract】Metaverse is a compound word of "Meta" and "Universe", meaning a world that transcends reality, a new virtual world. Due to the COVID-19 pandemic, non-face-to-face further accelerated the activation of the Metaverse. The Metaverse has the attractiveness of arousing user interest, high service scalability, and the potential to combine multiple revenue models. Therefore, many industries are adopting the Metaverse. The Republic of Korea has been on a ceasefire, since 1953, after the Korean War. After the war, the DMZ was decided in an area of 2 km from north to south (total of 4 km), centered on the Military Demarcation Line (MDL). The DMZ area is the largest nature conservation area in Asia and a military area where public access is strictly restricted. The Ministry of Unification is trying to reduce tensions and establish peace in the DMZ area by raising the interest of Korean people, as well as people around the world, through the DMZ Metaverse application. The Korean government has its own e-Government framework and cloud operating environments. In order to adopt the Metaverse to Korean government agencies and operate them sustainably, it is essential to support the e-Government framework and the cloud environments. In this paper, the design features, architecture, models, and functions of OnTwins, a Metaverse platform serviceable in the Korean government IT operating environment, are elaborated in detail. The DMZ Metaverse public service built on the platform will also be introduced. Finally, after comparing it with other Metaverse platforms, future research directions are discussed.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Metaverse; Web3D; digital twin; virtual world; VR; AR

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.3390/app12157908

【Author】 Kshetri, Nir Voas, Jeffrey

【Source】COMPUTER

【影响因子】2.256

【主题类别】

区块链应用-实体经济-环境领域

【Abstract】We analyze existing discourses surrounding blockchains' energy consumption and look at the actors and actions involved. We also provide an evaluation of various considerations and factors that affect blockchain networks' energy consumption and resulting environmental impacts.

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】2022-09-03

【文献类型】 观点阐述

【DOI】 10.1109/MC.2022.3176989

【Author】 Zhang, Guixian Zhao, Xiaoyu Chen, Menglu Ma, Shuyi

【Source】CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE

【影响因子】1.831

【主题类别】

区块链技术-协同技术-物联网

【Abstract】The traditional internet of vehicles (IoV) identity authentication system generally has the security risk that the center is not trusted. In the 5G IoV, a large number of deployed 5G base stations are integrated into it, which has further developed the technologies such as seamless handover, load balancing, and security authentication. The development of the IoV has largely alleviated the traffic pressure and improved the driving efficiency. However, there are many privacy security problems to be solved in 5G IoV. Therefore, with the characteristics of blockchain distribution, traceability, and non-tampering, an efficient privacy protection authentication protocol based on blockchain is proposed. The method includes two parts: identity registration and authentication. Vehicles and other traffic participants obtain a public identity block through identity registration before accessing the IoV. In the subsequent authentication, the communication parties use this identity block for anonymous authentication. The analysis results based on the formal analysis software Scyther are safe. The security analysis shows that the scheme could meet the security requirements in the IoV. At the same time, the comparison with the existing schemes shows that this scheme has lower computation overhead and communication cost.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】5G; authentication; blockchain; internet of vehicles; security

【发表时间】

【收录时间】2022-09-03

【文献类型】 实证数据

【DOI】 10.1002/cpe.7247

【Author】 You, Jie

【Source】SOFTWARE IMPACTS

【影响因子】

【主题类别】

区块链技术-协同技术-人工智能

【Abstract】Curvetime is a Blockchain framework that organically orchestrates proof-of-work and AI model training on one platform, optimizing resource usages for intense computation. In this framework proof-of-work is represented as a reinforcement-learning problem, in which a learning agent makes an optimal decision over the environment's states, whereas a new block is added and verified. It has been a backbone for blockchain based industrial applications, and a platform incubating diversified industrial intelligence models. As a two-in-one runtime infrastructure of blockchain and AI, curvetime improves the effectiveness of computing resources and accelerates AI model training at the extents proportional to the number of computing nodes.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Blockchain; Artificial Intelligence; Proof-of-work; Reinforcement learning; Deep learning; Distributed computing

【发表时间】2022

【收录时间】2022-09-03

【文献类型】 理论模型

【DOI】 10.1016/j.simpa.2022.100314