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13,493 results · page 416 of 563
Amber Gautam, Juhi Singh, Neha Bhateja
No abstract is available for this record.
Jens Klose
This article investigates similarities and differences between gold and four cryptocurrencies (Bitcoin, Ethereum, Bitcoin Cash and Litecoin). To do so, we estimate a system-GARCH-in-mean with respect to four determinants for the period starting 7/18/2014 at earliest until 7/12/2021. We find that, first, liquidity premia are less important. Second, volatility premia exist in either gold and cryptocurrencies. Third, the response of cryptocurrencies to ex- change rate changes is more pronounced than for gold at least if developing countries are included. Fourth, gold exhibits a safe haven status, while cryptocurrencies do not. So those cannot be seen as a store of value but rather as speculative assets.
Yu Gu, Guozi Sun, Jitao Wang, Kun Liu · 6 authors
No abstract is available for this record.
Rui Wang, Kejiang Ye, Yang Wang, Chengzhong Xu
No abstract is available for this record.
Xu Huang, Bo Zhao
No abstract is available for this record.
Xu Zheng, Chaofan Liu, Peng Zhang, Tun Lu · 5 authors
No abstract is available for this record.
Abid Jamal, Sana Amjad, Usman Aziz, Muhammad Usman Gurmani · 6 authors
No abstract is available for this record.
Bruce Masama, JP Bruwer
No abstract is available for this record.
M. Malathi, R. S. Krupasree, T. Lalitha Bhuvaneshwari, S. Gokulraj
No abstract is available for this record.
John Rachwan, Piotr Chodyko
No abstract is available for this record.
Marcelo Gómez, Patricia Bazán, Nicolás del Río, Miguel Morandi
No abstract is available for this record.
Andrew Amstrong Musoke, Patrick Dushimimana, Martin Saint
No abstract is available for this record.
Mohammad Hossin shafiabadi, Mohammad Hossin shafiabadi
The purpose of the present research was to introduce a blockchain-based voting system so that any state, including totalitarian states, can show interest in using it. In this method, a hybrid voting system with two centralized and distributed systems was used. Its centralized system is one of the most common voter identification and polling models, and its distributed system, which is designed with Ethereum public blockchain, is voting for voters. Totalitarian states are not interested in announcing the results online. Also, the lack of trust in E-voting systems by both states and voters has led to E-voting in important political elections in most states as support for manual or paper voting. Based on the results of field research with this voting system, it was possible to create a 7 min break between the end of the voting process and the announcement of the results for political considerations. This break can be increased by agreement. The results of the votes cannot be manipulated in any way. Survey results should also be communicated to voters before the voting process. This voting system can improve the level of democracy and maximum participation. It is hoped that the spread of distributed technologies, especially the blockchain, will pave the way for the spread of justice and democracy around the world.
Zhaojie Wang, Jianan Guo, Yiting Zhang, Ming Liu · 8 authors
No abstract is available for this record.
Esraa Dbabseh, Radwan Tahboub
No abstract is available for this record.
Dionysis Zindros
No abstract is available for this record.
<p>Enwei Liang</p>
This paper studies cryptocurrency. Firstly, this paper discusses the currency attribute of cryptocurrency. Secondly, this paper analyzes the advantages and disadvantages of cryptocurrency. Thirdly, this paper discusses the impact of cryptocurrency on the currency structure. Finally, this paper constructs the returns according to the daily price and statistically analyzes the yield difference of Bitcoin, Ethereum and Dogecoin. The ARIMA model is used to predict the return of cryptocurrency. This paper also gives the corresponding investment suggestions.
S. M. Maksudul Alam, Md Abdullah Al Mamun, Md. Shohrab Hossain, M. Samiruzzaman
No abstract is available for this record.
Mahsa Moosavi, Jeremy Clark
No abstract is available for this record.
M. Preetha, K Elavarasi, A.S. Radha Mani, E. Pavithra · 6 authors
No abstract is available for this record.
Mitsuyoshi Imamura, Kazumasa Omote
No abstract is available for this record.
Orla Nicole Hadjisophocleous, Tahir Abbas Syed, Hana Lee
While there is a rise in the applications of Blockchain technology in humanitarian and development aid programs, our understanding of Blockchain implementation and the resulting implications remains scant in this context. This research-in-progress report on the research currently underway in the United Nations World Food Program–Building Blocks. Adopting a case study approach, this study explores how the Building Block project revolutionizes the aid programs with the application of Ethereum, a blockchain-based distributed computing platform, and what new risk and social problems perpetuate with it. The study contributes to the growing stream of Information Systems research that focuses on the virtues and vices of using Blockchain technology and enhancing the effectiveness of humanitarian aid programs. As a relatively new technology, this study assesses the appropriateness of its usage and intends to provide insights to humanitarian and development organizations to consider when employing this novel technology.
Xianxian Li, Jiahui Peng, Zhenkui Shi, Chunpei Li
No abstract is available for this record.
Vincenzo De Angelis, Francesco Buccafurri
The introduction of a review system in e-commerce platforms results in an effective business model. The effects of positive/negative reviews on the success of a product are well studied in the literature. Therefore, for the vendors, it is crucial to obtain positive reviews of their products. This fact opens fraudulent scenarios. Indeed, some vendors can pay an incentive to the buyers to obtain, in exchange, a fake positive review. This fake-review system (FRS) is so widespread that vendors rely on ad-hoc companies that, through intermediaries, find buyers available to release fake reviews. In this paper, we propose a game-theory-based strategy to discourage the above fraudulent business model, and an effective way to implement this strategy leveraging an Ethereum smart contract. Specifically, the contribution of the paper is two-fold. First, we formalize the current business model as a sequential game, and we identify sufficient conditions making FRS advantageous. Second, we propose to introduce in the review system a new mechanism, thanks to which, the corresponding sequential game requires conditions necessary to make advantageous FRS that are strictly less convenient than the previous ones. We implemented the solution and evaluate the cost of the smart contract execution.