Search results for " Peer"
showing 10 items of 105 documents
Blockchain-Based Proof of Location
2016
Location-Based Services (LBSs) build upon geographic information to provide users with location-dependent functionalities. In such a context, it is particularly important that geographic locations claimed by users are trustworthy. Centralized verification approaches proposed in the last few years are not satisfactory, as they entail a high risk to the privacy of users. In this paper, we present and evaluate a novel decentralized, infrastructure-independent proof-of-location scheme based on blockchain technology. Our scheme guarantees both location trustworthiness and user privacy preservation.
A new architecture for Smart Contracts definition in Demand Response Programs
2019
The present paper shows the possibility to use a smart contract for defining a distributed Demand Response mechanism. The use of the blockchain and smart contracts for the Demand Response mechanism allows the creation of an automatic system, where network users can communicate with the DSO to provide their flexibility. The blockchain ensures that the same information is shared among the users of the grid, while preserving user privacy. The DSO notifies the request to increase or reduce the load in a given period of the day using channels, a native abstraction of Hyperledger Fabric. The smart contract computes the support provided by each user to fulfill the requested load adaptation and aut…
Formative assessment in higher education: analysis of the experience
2015
<p>Currently the learning is in the center of the education therefore the methods and techniques that promote learning become topical, inter alia higher education. Formative assessment is a significant part of the study process as a factor for promotion of the learning. The article analyzes the experience of formative assessment at the study course aimed at the development of writing competence and ensuring appropriate skills development.</p>
Iterative altitude-aiding algorithm for improved GNSS positioning
2011
The system proposed in this study relies on a WAVE P2P network, which is a proper standard to fit the vehicular environment wireless communications requests. Starting from the chance to exchange information given by this infrastructure, the possibility to improve the performance of a global navigation satellite system (GNSS) receiver based on a Kalman filter is considered. This improvement is obtained exploiting the external altitude measurements provided by other peers in the network, equipped with GNSS receivers. The topic of an altitude-aided system has been described in a previous work, that highlighted the need for a parameter that points out the effectiveness and the consistency of th…
Assessing Peer Review by Gauging the Fate of Rejected Manuscripts: the case of the Journal of Artificial Societies and Social Simulation
2017
This paper investigates the fate of manuscripts that were rejected from JASSS-The Journal of Artificial Societies and Social Simulation, the flagship journal of social simulation. We tracked 456 manuscripts that were rejected from 1997 to 2011 and traced their subsequent publication as journal articles, conference papers or working papers. We compared the impact factor of the publishing journal and the citations of those manuscripts that were eventually published against the yearly impact factor of JASSS and the number of citations achieved by the JASSS mean and top cited articles. Only 10% of the rejected manuscripts were eventually published in a journal that was indexed in the Web of Sci…
A Survey on Privacy in Decentralized Online Social Networks
2018
Decentralized Online Social Networks (DOSNs) have recently captured the interest of users because of the more control given to them over their shared contents. Indeed, most of the user privacy issues related to the centralized Online Social Network (OSN) services (such as Facebook or Google+) do not apply in the case of DOSNs because of the absence of the centralized service provider. However, these new architectures have motivated researchers to investigate new privacy solutions that allow DOSN’s users to protect their contents by taking into account the decentralized nature of the DOSNs platform. In this survey, we provide a comprehensive overview of the privacy solutions adopted by…
Student voice in learning assessment: a pathway not yet developed at university
2012
During 2009/2010, the current research was conducted with the aim of analysing student and teaching staff on regarding student participation in assessment. A content analysis of 76 subject outlines was carried out, and then 40 member of the teaching staff and 614 university students were surveyed. The results of the content analysis prove there is a shortage of information about and programming for student participation in assessment. Durante el curso 2009/2010 se llevó a cabo esta investigación con el objetivo de analizar la opinión y perspectiva que profesores y estudiantes universitarios tienen sobre la participación de estos últimos en el proceso de evaluación. Se realizó un análisis de…
A Revised Short Form of the Extended Class Play Among Italian Early Adolescents
2019
Among the measures assessing peer reputation, the Extended Class Play (ECP) is now used extensively in North American settings. Little information is available in other cultural contexts. Furthermore, practical considerations suggest developing a shorter form of the ECP to be used in socio-educational environments. This study examined the ECP dimensions of peer assessment in Italy as well as developed a shorter form of the measure. We revised the ECP using factor analyses according to an explorative-confirmatory approach. The original 37-item ECP was shortened to a 22-item version and, subsequently, the properties of the revised measure were evaluated. We performed two studies comprising, r…
Drinking motives mediate cultural differences but not gender differences in adolescent alcohol use
2015
Item does not contain fulltext PURPOSE: To test whether differences in alcohol use between boys and girls and between northern and southern/central Europe are mediated by social, enhancement, coping, and conformity motives. METHODS: Cross-sectional school-based surveys were conducted among 33,813 alcohol-using 11-to 19-year-olds from northern Europe (Denmark, Estonia, Finland, Ireland, Poland, Scotland, and Wales) and southern/central Europe (Belgium, Hungary, Italy, Portugal, Slovakia, and Switzerland). RESULTS: Particularly in late adolescence and early adulthood, boys drank more frequently and were more often drunk than girls. Instead of mediation, gender-specific motive paths were found…
Examining Controlling Styles of Significant Others and Their Implications for Motivation, Boredom and Burnout in Young Swimmers
2021
The aim of the study was to examine the controlling style in two contexts of social influence: the team (i.e., coach and teammates) and the family (i.e., father and mother), as well as the mediational role of motivation (autonomous, controlled, and amotivation) and its relationship with boredom and burnout in young swimmers. To this end, 267 swimmers (140 girls and 127 boys) between 12 and 18 years of age (M = 14.26; SD = 1.61) were assessed. The results showed that in the team context, coaches’ controlling style directly promoted controlled motivation and boredom in their swimmers, and indirectly influenced burnout through the mediating role of swimmers’ controlled motivation. Teammates’ c…