【Author】 Liu, Shiang Yang, Changyu

【Source】FINANCE RESEARCH LETTERS

【影响因子】9.848

【主题类别】

区块链治理-市场治理-市场分析

【Abstract】This paper studies how the SEC's approval of spot cryptocurrency ETFs affects the cryptocurrency market. We find that the launch of spot cryptocurrency ETFs elevates cryptocurrencies to a more legitimate asset class and increases Bitcoin's price and liquidity. In addition, this study offers no supportive evidence for the view that spot cryptocurrency ETFs serve as stepping stones toward tokenization.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Spot cryptocurrency ETF; Legitimacy; Liquidity; Tokenization

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.1016/j.frl.2024.106150

【Author】 Liang, Xueping Alam, Nabid Sultana, Tahmina Bandara, Eranga Shetty, Sachin

【Source】JOURNAL OF MEDICAL INTERNET RESEARCH

【影响因子】7.076

【主题类别】

区块链应用-实体经济-医疗领域

【Abstract】Background: Telehealth played a critical role during the COVID-19 pandemic and continues to function as an essential component of health care. Existing platforms cannot ensure privacy and prevent cyberattacks. Objective: The main objectives of this study are to understand existing cybersecurity issues in identity management and trust worthy communication processes in telehealth platforms and to design a software architecture integrated with blockchain to improve security and trustworthiness with acceptable performance. Methods: We improved personal information security in existing telehealth platforms by adopting an innovative interdisciplinaryapproach combining design science, social science, and computer science in the health care domain, with prototype implementation.We used the design science research methodology to implement our overall design. We innovated over existing telehealth platformswith blockchain integration that improves health care delivery services in terms of security, privacy, and efficiency. We adopteda user-centric design approach and started with user requirement collection, followed by system functionality development.Overall system implementation facilitates user requirements, thus promoting user behavior for the adoption of the telehealthplatform with decentralized identity management and an access control mechanism.Results: Our investigation identified key challenges to identity management and trustworthy communication processes intelehealth platforms used in the current health care domain. By adopting distributed ledger technology, we proposed a decentralizedtelehealth platform to support identity management and a trustworthy communication process. Our design and prototypeimplementation using a smart contract-driven telehealth platform to provide decentralized identity management and trustworthycommunication with token-based access control addressed several security challenges. This was substantiated by testing with10,000 simulated transactions across 5 peers in the Rahasak blockchain network. The proposed design provides resistance tocommon attacks while maintaining a linear time overhead, demonstrating improved security and efficiency in telehealth services.We evaluated the performance in terms of transaction throughput, smart contract execution time, and block generation time. Tocreate a block with 10,000 transactions, it takes 8 seconds on average, which is an acceptable overhead for blockchain-basedapplications. Conclusions: We identified technical limitations in current telehealth platforms. We presented several design innovations usingblockchain to prototype a system. We also presented the implementation details of a unique distributed architecture for a trustworthycommunication system. We illustrated how this design can overcome privacy, security, and scalability limitations. Moreover, weillustrated how improving these factors sets the stage for improving and standardizing the application and for the wide adoptionof blockchain-enabled telehealth platforms

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】telehealth; blockchain; security; software; proof of concept; implementation; privacy

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 理论模型

【DOI】 10.2196/46556

【Author】 Nguyen, Bao Khac Quoc Pham, Dung Thi Ngoc

【Source】RESEARCH IN INTERNATIONAL BUSINESS AND FINANCE

【影响因子】6.143

【主题类别】

区块链治理-市场治理-市场分析

【Abstract】Global financial markets have witnessed significant transformations in response to the worldwide spread of the Covid-19 pandemic, resulting in heightened risk and alterations in inter-market relationships. Both cryptocurrency markets and conventional equity markets have been influenced by these changes. This study aims to investigate the potential hedging and safe haven benefits of Bitcoin and Ethereum against risks in Asian emerging stock markets under various Covid-19 pandemic contexts including the onset of the pandemic, varying levels of panic, the extent of media attention, and sentiment analysis. Utilizing the dynamic correlation coefficients derived from the DCC-GARCH methodology, our analysis indicates that, both Bitcoin and Ethereum do not effectively serve as hedges or safe havens for major Asian emerging stock markets during the Covid-19 outbreak. These results remain robust during more extreme periods characterized by high panic, intense media attention, and negative sentiment. Nevertheless, an noteworthy exception is the case where Ethereum exhibits strong hedging properties specifically in the context of the Pakistan equity market. Recognizing these unique hedge and safe haven potential of cryptocurrencies can contribute to enhancing the effectiveness of investment strategies and risk management practices during periods of market turbulence.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Covid-19; Hedge; Safe haven; Stock; Cryptocurrency; Fintech

【发表时间】2025

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.1016/j.ribaf.2024.102599

【Author】 Fuchs, Ida Rajasekharan, Jayaprakash Cali, Umit

【Source】ENERGY FOR SUSTAINABLE DEVELOPMENT

【影响因子】5.655

【主题类别】

区块链应用-实体经济-能源领域

【Abstract】Meeting the targets of Sustainable Development Goal (SDG) 7, which focuses on ensuring access to affordable, reliable, sustainable, and modern energy for all, poses significant challenges. Overcoming these hurdles requires innovative solutions that can bridge the gap between current capabilities and future needs. Swarm electrification emerges as a promising concept that could accelerate progress towards achieving SDG 7 goals by leveraging the collective power of decentralized energy resources. This paper presents a literature review on swarm electrification and related insights from case studies. The study delves into the concept of swarm electrification, placing it within the context of the prevailing trends in the power system sector: decentralization, decarbonization, and digitalization. It examines the role of digital technologies in enhancing swarm electrification and categorizes application areas according to the phases of swarm electrification. Particular attention is given to the technologies underpinning Deep Digitalization, such as distributed ledger technology, notably blockchain, and artificial intelligence, with a focus on machine learning. These technologies play pivotal roles in advancing swarm electrification. The review demonstrates how deep digitalization can facilitate the improvement of swarm electrification and ultimately support the integration of bottom-up initiatives with top-down grid expansion efforts over time.

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【Keywords】Rural electrification; Energy access; Swarm electrification; Solar; Blockchain; Machine learning

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.1016/j.esd.2024.101489

【Author】 Kontos, Christos Panagiotakopoulos, Theodor Kameas, Achilles

【Source】SENSORS

【影响因子】3.847

【主题类别】

区块链技术-核心技术-智能合约

【Abstract】Population growth and environmental burden have turned the efforts of cities globally toward smarter and greener mobility. Cooperative and Connected Automated Mobility (CCAM) serves as a concept with the power and potential to help achieve these goals building on technological fields like Internet of Things, computer vision, and distributed computing. However, its implementation is hindered by various challenges covering technical parameters such as performance and reliability in tandem with other issues, such as safety, accountability, and trust. To overcome these issues, new distributed and decentralized approaches like blockchain and smart contracts are needed. This paper identifies a comprehensive inventory of CCAM challenges including technical, social, and ethical challenges. It then describes the most prominent methodologies using blockchain and smart contracts to address them. A comparative analysis of the findings follows, to draw useful conclusions and discuss future directions in CCAM and relevant blockchain applications. The paper contributes to intelligent transportation systems' research by offering an integrated view of the difficulties in substantiating CCAM and providing insights on the most popular blockchain and smart contract technologies that tackle them.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】cooperative, connected, and automated mobility; blockchain; smart contracts; internet of things; internet of vehicles

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.3390/s24196273

【Author】 Teng, Minyu Han, Jingxuan Xie, Jintao Gao, Jiayao Li, Jiangfeng Shi, Yang

【Source】ACM TRANSACTIONS ON SENSOR NETWORKS CCF-B

【影响因子】2.560

【主题类别】

区块链技术-协同技术-云存储

【Abstract】With the rapid growth of wireless sensor networks, secure data transmission, storage, and distribution in such networks has become an urgent demand. To defend against security risks such as data leakage, key compromise, and unauthorized misuse of data simultaneously, we propose a novel obfuscatable ciphertext-policy attribute-based re-encryption scheme with a specially designed obfuscator. The proposed scheme leverages program obfuscation to transform the re-encryption program codes into an unintelligible form and embed the private keys into the obfuscated implementation. Consequently, the proposed scheme protects data confidentiality and keeps the secrecy of the private key while providing fine-grained access control. Formal proofs for the security of the proposed re-encryption scheme and the obfuscator are provided. Extensive experiments have been conducted on representative platforms, including cloud servers, workstations, and embedded devices, to evaluate the computational efficiency and energy consumption of the scheme. Experimental results indicate that the scheme achieves high efficiency on various platforms and economical energy consumption on typical embedded devices with constrained resources.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Sensor network; cloud computing; ciphertext-policy attribute-based en- cryption; program obfuscation

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.1145/3687127

【Author】 Guo, Jianxiong Ding, Xingjian Wu, Weili Du, Ding-zhu

【Source】ACM TRANSACTIONS ON SENSOR NETWORKS CCF-B

【影响因子】2.560

【主题类别】

区块链应用-实体经济-汽车领域

【Abstract】Electric Vehicles (EVs) are becoming more and more popular in our daily life, which replaces traditional fuel vehicles to reduce carbon emissions and protect the environment. EVs need to be charged, but the number of charging piles in a Charging Station (CS) is limited, and charging is usually more time-consuming than fueling. According to this scenario, we propose a secure and efficient charging scheduling system based on a Directed Acyclic Graph (DAG)-blockchain and double-auction mechanism. In a smart area, it attempts to assign EVs to the available CSs in the light of their submitted charging requests and status information. First, we design a lightweight charging scheduling framework that integrates DAG-blockchain and modern cryptography technology to ensure security and scalability during performing scheduling and completing tradings. In this process, a constrained multi-item double-auction problem is formulated because of the limited charging resources in a CS, which motivates EVs and CSs in this area to participate in the market based on their preferences and statuses. Due to this constraint, our problem is more complicated and harder to achieve truthfulness as well as system efficiency compared to the existing double-auction model. To adapt to it, we propose two algorithms, namely, Truthful Mechanism for Charging (TMC) and Efficient Mechanism for Charging (EMC), to determine an assignment between EVs and CSs and pricing strategies. Then, both theoretical analysis and numerical simulations show the correctness and effectiveness of our proposed algorithms.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Electric vehicle (EV); charging scheduling; DAG-based blockchain; constrained multi-item double auction; truthfulness; system efficiency

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 理论模型

【DOI】 10.1145/3685932

【Author】 Pu, Tingqian Zulkafli, Abdul Hadi

【Source】E & M EKONOMIE A MANAGEMENT

【影响因子】1.422

【主题类别】

区块链应用-实体经济-其他

【Abstract】In the digital era, digital transformation is disrupting traditional business models and innovation activities. Numerous firms have expedited their endeavors in digital transformation to augment their manufacturing capabilities, operational efficiency, and competitive standing. Despite the increasing scholarly attention on the pivotal role of digital transformation in economic progress, there exists a paucity of research delving into the intricate nexus between digital transformation and innovation quality. The objective of this study is to investigate the relationship between digital transformation and innovation quality. Leveraging annual report data and patent information from Chinese listed companies spanning from 2012 to 2021, we have identified that digital transformation significantly enhances innovation quality. Interestingly, upon further investigation into the relationship between the five sub-dimensions of digital transformation (artificial intelligence, blockchain, cloud computing, big data, and digital technology applications) and innovation quality, positive and significant correlations were observed with artificial intelligence, cloud computing, big data, and digital technology applications, while blockchain did not exhibit a significant impact. Furthermore, the study reveals that the impact of digital transformation on innovation quality varies depending on property rights and regional location. Specifically, this promotional effect is significant only in non-state-owned enterprises and in the central and eastern regions. Overall, this paper enriches the research on digital transformation and innovation quality, providing valuable insights to promote the advancement of digital transformation levels for better serving the high-quality development of the real economy.

你可以尝试使用大模型来生成摘要 立即生成

【Keywords】Digital transformation; innovation quality; artificial intelligence; blockchain; cloud computing; big data; digital technology applications

【发表时间】2024

【收录时间】2024-10-22

【文献类型】 案例研究

【DOI】 10.15240/tul/001/2024-5-021