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1.
Matthew B. Hoy 《Medical reference services quarterly》2017,36(3):273-279
The blockchain is a relatively new technology used to verify and store transaction records for online cryptocurrencies like Bitcoin. The system is redundant and distributed, making it difficult for transactions to be rescinded, duplicated, or faked. Beyond online currencies, the blockchain has potential uses in health care, education, and many other fields. This column will briefly describe what the blockchain is and how it is being used, potential future uses that may be of interest to librarians and medical practitioners, and some of the problems with the system. 相似文献
2.
In this Editorial Note for the special issue on "Incorporating Blockchain Technology in Information Systems Research," we first focus on the need on conducting blockchain research in the information systems field. We briefly describe the nine outstanding articles that were selected for publication in this special issue. The editorial note ends with a research agenda for future scholars interesting in studying the blockchain phenomenon. 相似文献
3.
《Information processing & management》2023,60(3):103247
Recently, models that based on Transformer (Vaswani et al., 2017) have yielded superior results in many sequence modeling tasks. The ability of Transformer to capture long-range dependencies and interactions makes it possible to apply it in the field of portfolio management (PM). However, the built-in quadratic complexity of the Transformer prevents its direct application to the PM task. To solve this problem, in this paper, we propose a deep reinforcement learning-based PM framework called LSRE-CAAN, with two important components: a long sequence representations extractor and a cross-asset attention network. Direct Policy Gradient is used to solve the sequential decision problem in the PM process. We conduct numerical experiments in three aspects using four different cryptocurrency datasets, and the empirical results show that our framework is more effective than both traditional and state-of-the-art (SOTA) online portfolio strategies, achieving a 6x return on the best dataset. In terms of risk metrics, our framework has an average volatility risk of 0.46 and an average maximum drawdown risk of 0.27 across the four datasets, both of which are lower than the vast majority of SOTA strategies. In addition, while the vast majority of SOTA strategies maintain a poor turnover rate of approximately greater than 50% on average, our framework enjoys a relatively low turnover rate on all datasets, efficiency analysis illustrates that our framework no longer has the quadratic dependency limitation. 相似文献
4.
Over the last few years, research on Bitcoin and other cryptocurrencies has snowballed across many disciplines: technical fields, economics, law, public policy, finance, accounting, and others. As the uses of blockchain technology behind Bitcoin expand, more disciplines will be drawn to its study and the research will greatly expand. This paper provides an assessment of the current state of the literature. From a comprehensive search of the literature that resulted in an original sample of 13,507 results, a final sample of 1,206 papers on Bitcoin are categorised and mapped across six disciplines. 相似文献
5.
区块链技术的迅速发展引起了社会各界广泛关注,相关研究与日俱增。依据区块链技术自身发展路径,将已有研究划分为两个阶段：第一阶段为对区块链技术及其应用的简单探索,第二阶段为区块链技术在金融及其它非金融领域的具体应用。通过对比不同阶段研究内容,得到结论：未来区块链技术研究将落脚于底层技术更新、应用具体化探索及实际问题解决等。 相似文献
6.
AbstractInfrastructures are typically seen as boring and serious, and are routinely depicted using metaphors from transportation. We argue that the carnival is a fruitful metaphor for understanding emerging information infrastructures, as the information age is also the age of the carnival. We distinguish between the ubiquitous or distal carnival and its particular manifestations – the proximate carnival – both of which are characterized by play, anarchy, dissimulation, vulgar language, and excessive consumption. The article focuses on Bitcoin, which we see as a nascent information infrastructure and an exemplary instance of a proximate carnival. It also considers how the carnival metaphor might help us reimagine our study of the information age. 相似文献
7.
国内区块链研究起步于2014年,近年来取得了丰富的研究成果。以CNKI收录的近5年国内区块链文献为研究对象,采用文献计量方法,采用Excel、EndNote、VosViewer软件,从文献数量、载文期刊、核心作者、关键词4个维度对国内学者在区块链领域所从事研究的结构特征与研究热点进行探析。结果表明,现有学者大多是对区块链技术的应用可行性进行阐述,很少有学者对区块链在各领域实际应用的具体实现方法进行论述。通过对国内区块链领域发展历程的综述,可协助相关研究者探索新的研究领域。 相似文献
8.
廖愉平 《黑龙江生态工程职业学院学报》2014,(3):73-80
自2009年比特币产生以来,经过以“技术共享修订”需求为主导的“挖矿”游戏内测期、以投资需求为主导的商业模式构建期和以投机需求为主导的市场泡沫凸显期三个阶段,已形成了一个可在全球范围内交易的比特币市场。作为虚拟金融市场的产物,比特币市场的发展是由人们自发和被引导的需求所推动,而投机性需求所引发的市场狂热,不但损害投资者的利益,同时也阻碍了比特币市场自身的发展。比特币不属于真正意义上的货币,对网络支付基础服务职能的拓宽和强化是其长远发展的基础,但在长时间内难以维持其币值的稳定性。作为虚拟货币的比特币,目前其市场价格远远偏离了其内在的价值,存在极大的泡沫,投资或投机比特币都是最差的选择。必须对比特币市场进行有效的监管,并积极引导和拓宽民间资本投资的渠道。 相似文献
9.
Some have called bitcoin a real bubble, while, according to others, it is the most radical invention of the twenty-first century. Nevertheless, there is a consensus regarding the disruptive potential of blockchain technology, which is the basis of bitcoin and other similar cryptocurrencies. As the interest in these digital currencies is growing, many vendors around the globe now accept payments in blockchain-based currencies. However, not much is known about how individuals around the world would react to using blockchain-based currencies as spending currencies. Given the global reach of these currencies, in this study, we explore the role of national cultural values in influencing individuals’ willingness to use blockchain-based currencies. To do so, we collected survey data from the U.S. and India. We found that national cultural values (collectivism, power distance, masculinism, uncertainty avoidance, and long-term orientation) significantly affect blockchain-based currency usage. 相似文献
10.
Sam Dallyn 《Journal of Cultural Economy》2017,10(5):462-473
Since its creation in 2009, the electronic currency Bitcoin has generated volumes of online debate in the business press. While there have been plenty of economic arguments situating it as a financial bubble about to collapse including from Nobel Prize winning economists, its price value has proven to be more durable than many have predicted. To explain this durability, Karpik’s conception of market singularities is used to understand the Bitcoin phenomenon by outlining the beliefs that maintain Bitcoin’s status as a volatile financial asset. Market singularities are markets for particular kinds of goods and services that are of uncertain and incommensurable value. Singularities markets have communities of followers and a distinctive belief system that ascribes value to a particular product, service, or asset. Developing Karpik’s conception, the paper explores the libertarian political belief system that surrounds Bitcoin’s status as a financial asset. I also outline some political tensions within the electronic currency community concerning governance and centralisation. 相似文献