Blockchain Papers

André Janssen

No abstract is available for this record.

Olaf Meyer

No abstract is available for this record.

Ștefana Maria Moisă, Andrada Pârvu, Beatrice Gabriela Ioan

Background: Palliative care, seen as a fundamental human right, gains increasingly more importance worldwide, but the distribution of this kind of facilities is unequal. Aim: In this paper authors compare the palliative care systems of Romania and Lithuania, post-communist countries, characterized by shifting from a state healthcare system to a decentralized one, based on health insurances. Design: We have performed a desk research in Romanian and English languages, analyzing publications referring to this topic in the two countries. Data sources: Vilnius University Database and Google search engine using as keywords, Lithuania(n) palliative care", respectively "Romania(n) palliative care", published between 1975 and 2019. Eligibility criteria: articles published between the years mentioned above in English or Romanian languages. Results: In Romania, the palliative care network is better structured, including both hospital care and home care, for adults and children. Still, opioid consumption in Lithuania is higher than in Romania because of a more flexible prescribing legislation. In Romania, palliative care is a recognized as a medical sub-speciality, while in Lithuania no preoccupations exist in this regard. Conclusions: In both countries state budget funds allocation lacks transparency, and funds allocated for palliative care are insufficient. During the last 20 years Romania has undertaken bigger steps in palliative care than Lithuania, especially due to the effort of a few dedicated professionals. Still, the sub-financing of the two systems and the limited number of professionals limit the system efficiency.

Cheah, J

No abstract is available for this record.

Ondruška, Daniel

Cryptocurrencies are well known asset that almost everyone at least heard of. Some of these cryptocurrencies have all of its supply already in circulation, while others do not. Two biggest cryptocurrencies, Ethereum and Bitcoin, have their supply being increased every day through the process known as mining, which many never even heard of. This process and its interaction with price are the main topic of this thesis. Price and hash rate, which is good and flexible index of difficulty of mining, of Bitcoin and Ethereum are studied and it is shown, that there is an interplay among both currencies but also withing the currency itself.

André Janssen

Item does not contain fulltext

Alex Kibet

No abstract is available for this record.

Şerif Dilek, Yunus Furuncu

Bitcoin, with its market value among cryptocurrenciesand being the biggest in terms of its processing volume, carries greatpotential in terms of low cost, speedy processing and low-level risk while alsobringing with it important global-level change and transformation. On the otherhand, the fact that cryptocurrencies and Bitcoin specifically are new, ofunclear legal status, and carry the risk of being involved in illegal activity,there is the potential for their use as an extremely volatile and speculativeinvestment tool and have environmental effects. This study examines Bitcoinmining and blockchain technology and investigates the high amounts of energyconsumed by Bitcoin and its environmental effects. It is argued that the energyconsumed as a result of increased Bitcoin mining will have environmental andsocial consequences, such as global warming and climate change.

Antônio Unias de Lucena, Marco Aurélio Amaral Henriques

Um computador quântico com alta capacidade de processamento quebrará as assinaturas digitais utilizadas nos principais blockchains. Este trabalho traz um estudo preliminar sobre a adoção de assinaturas baseadas em hash no blockchain do Bitcoin para torná-lo resistente ao computador quântico. O estudo mostra os pontos a serem modificados e seus impactos. O maior deles refere-se ao tamanho da assinatura digital, que influencia no tamanho de uma transação e diminui o número de transações por bloco. Soluções para este problema incluem o aumento do tamanho do bloco, a diminuição do tamanho das assinaturas baseadas em hash e/ou a adoção de algoritmos pós-quânticos que produzam assinaturas digitais menores.

Anum Nawaz

No abstract is available for this record.

Tom Billitteri

Bitcoin may not last, but blockchain could be the real dealEconomist Nouriel Roubini, aka Dr. Doom since he predicted the 2008 financial crisis, called it "the mother of all bubbles."The head of the Royal Bank of Scotland, Sir Howard Davies, invoked Dante's Inferno to warn investors off it.JPMorgan Chase CEO Jamie Dimon flat-out called

Amélie Favreau

International audience

Lee, J, Waugh, J, Sims, A

No abstract is available for this record.

Muhammad Sulaiman

No abstract is available for this record.

Yulian Serazhym, Stepanenko, Mykhailo

No abstract is available for this record.

Paola Manes

No abstract is available for this record.

Paola Manes

No abstract is available for this record.

Letra, Ivo José Santos

No abstract is available for this record.

NAM, Yonghyeon

No abstract is available for this record.

Quentin Alamélou, Olivier Blazy, Stéphane Cauchie, Philippe Gaborit

No abstract is available for this record.

William J. Buchanan

Imagine being told that your wage was going to be cut in half. Well, that’s what’s soon going to happen to those who make money from Bitcoin mining, the process of earning the online currency Bitcoin.The current expected date for this change is 11 July 2016. Many see this as the day when Bitcoin prices will rocket and when Bitcoin owners could make a great deal of money. Others see it as the start of a Bitcoin crash. At present no one quite knows which way it will go.Bitcoin was created in 2009 by someone known as Satoshi Nakamoto, borrowing from a whole lot of research methods. It is a cryptocurrency, meaning it uses digital encryption techniques to create bitcoins and secure financial transactions. It doesn’t need a central government or organisation to regulate it, nor a broker to manage payments.Conventional currencies usually have a central bank that creates money and controls its supply. Bitcoin is instead created when individuals “mine” for it by using their computers to perform complex calculations through special software. The algorithm behind Bitcoin is designed to limit the number of bitcoins that can ever be created.All Bitcoin transactions are recorded on a public database known as a blockchain. Every time someone mines for Bitcoin, it is recorded with a new block that is transmitted to every Bitcoin app across the network, like a bank updating its online records.

Peter, Kimberley, Schaus, Michael

No abstract is available for this record.

Pátek, Martin

The purpose of this thesis is to explain how Bitcoin works, analyze the Bitcoin total variation and to separate the jump component of realized variance from the continuous part. In order to do so, we use estimates of quadratic variation and integrated variance. We detect jumps using a test which is based on the difference between realized variance and bipower variation. The results for BTC/USD exchange rate are then compared with the results for EUR/USD exchange rate, price of gold and for the S&P 500 index. In case of all datasets, we use data with five-minute frequency. It seems that no other work analyzing the Bitcoin total variation using the same methods to separate the jump component from the continuous part of a price process has been written so far. We found that jumps in the Bitcoin total variation are stronger than for other analyzed instruments. The results also suggest that the duration between jumps for Bitcoin considerably prolonged during the monitored period which may indicate that the behavior of price of bitcoin has stabilized over time. We also found out that the variance of price of bitcoin is higher during the monitored period in comparison with other analyzed instruments. Powered by TCPDF (www.tcpdf.org)

Jason S. Seligman

No abstract is available for this record.