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Naranjo, Rodrigo ; Meco, Albert ; Arroyo Gallardo, Javier ; Santos Peñas, Matilde | Wiley | 2015-04-11In this work we are proposing a trading system where fuzzy logic is applied not only for defining the trading rules, but also for managing the capital to invest. In fact, two fuzzy decision support systems are developed. The first one uses fuzzy[...]texto impreso
Blockchain technology has emerged as a new paradigm to build decentralized systems which do not require a central authority. It is most popular for enabling Bitcoin and other crypto-currencies. However, blockchain applications span beyond Financ[...]texto impreso
Since the appearance of Bitcoin, cryptocurrencies have experienced enormous growth not only in terms of capitalization but also in number. As a result, the cryptocurrency market can be an attractive arena for investors as it offers many possibil[...]texto impreso
Arroyo Gallardo, Javier ; Irpino, Antonio ; Hassan, Samer | 2018texto impreso
The distribution of participation in peer production, such as wikis and open source communities, has been traditionally characterized as a power-law distribution. This assumption has several implications, such as the assumed uniformity of the re[...]texto impreso
Faqir-Rhazoui, Youssef ; Ariza Garzón, Miller Janny ; Arroyo Gallardo, Javier ; Hassan, Samer | ACM | 2021-05Blockchain technology has enabled a thriving emergent ecosystem of tools and communities actively using decentralized systems. However, most blockchain infrastructure (e.g. Ethereum) requires users to pay some fees to execute their desired actio[...]texto impreso
Peinado Gil, Federico ; Pavón Mestras, Juan ; Román Navarro, Sara ; Sánchez Hernández, Jaime ; Gómez Gauchía, Héctor ; Arroyo Gallardo, Javier ; Ullán Hernández, Eva ; Hassan, Samer ; Tenorio Fornés, Antonio | 2016-07-29El propósito de este proyecto ha sido el desarrollo y la consolidación de la manera en que los docentes gestionamos las denominadas ‘wikis’, páginas web autoeditables que varias asignaturas universitarias utilizan ya como recursos docentes abier[...]texto impreso
Serrano, Abel ; Arroyo Gallardo, Javier ; Hassan, Samer | 2018It is widely accepted that peer production communities show a high level of inequality in the level of participation. Typically, we can observe a power law in the distribution of contributions. However, we argue that participation inequality, an[...]texto impreso
Blockchain technology allows for new forms of online governance relying on decentralized infrastructure. In particular, it has enabled the so called Decentralized Autonomous Organizations (DAOs): pieces of software deployed on a blockchain which[...]texto impreso
Faqir-Rhazoui, Youssef ; Arroyo Gallardo, Javier ; Serrano, Abel | Association for Computing Machinery (ACM) | 2019Commons-based peer production communities can be analyzed with the help of social network analysis. However, since they are fluid organizations that change over time, the time dimension needs to be taken into account. In this work we present a [...]texto impreso
Serrano, Abel ; Arroyo Gallardo, Javier ; Hassan, Samer | 2018Commons-based peer production is a mode of social innovation where communities co-create openly-accessible resources exploiting the network effect of the Internet. Traditionally, research has focused on the successful cases of FLOSS and Wikipedi[...]
