1,721,146 research outputs found
Pierro G. Guzzo, Le Fibule in Etruria dal VI al I secolo
No full textVan den Driessche Bernard. Pierro G. Guzzo, Le Fibule in Etruria dal VI al I secolo. In: L'antiquité classique, Tome 45, fasc. 1, 1976. pp. 393-394
Pierro G. Guzzo, Le Fibule in Etruria dal VI al I secolo
No full textVan den Driessche Bernard. Pierro G. Guzzo, Le Fibule in Etruria dal VI al I secolo. In: L'antiquité classique, Tome 45, fasc. 1, 1976. pp. 393-394
Besu vs. Quorum: Comparative Analysis in the Context of Simulated Energy Communities
Full text linkThis paper presents a comparative analysis of two private blockchains, Besu and Quorum, both built on the Ethereum Virtual Machine (EVM) in order to manage the simulated production, consumption and exchange of energy in the context of a Renewable Energy Community (REC).
The research focuses on simulating energy production through photovoltaic panels within a community, utilizing energy storage systems. The simulated data serve as input for two private blockchains, leveraging smart contracts to transform the simulated energy production into tokens. The study further explores the simulation of tokenized energy transactions, encompassing buying and selling within the energy community. The final phase
involves a comprehensive comparison of Besu and Quorum, evaluating their computational resource usage and
performance metrics.
The findings contribute to the comprehension of blockchain technologies within energy communities, offering valuable insights into the efficiency and suitability of BESU and QUORUM for tokenized energy transactions. Our research confirms that simulating an energy community scenario with 20 producers, trading energy via tokens, demonstrates no performance gap in terms of TPS and RPS between the two blockchains. However, at larger scales, Quorum appears to outperform Besu in terms of both TPS and RPS efficiency
An organized repository of ethereum smart contracts’ source codes and metrics
No full textMany empirical software engineering studies show that there is a need for repositories where source codes are acquired, filtered and classified. During the last few years, Ethereum block explorer services have emerged as a popular project to explore and search for Ethereum blockchain data such as transactions, addresses, tokens, smart contracts’ source codes, prices and other activities taking place on the Ethereum blockchain. Despite the availability of this kind of service, retrieving specific information useful to empirical software engineering studies, such as the study of smart contracts’ software metrics, might require many subtasks, such as searching for specific transactions in a block, parsing files in HTML format, and filtering the smart contracts to remove duplicated code or unused smart contracts. In this paper, we afford this problem by creating Smart Corpus, a corpus of smart contracts in an organized, reasoned and up-to-date repository where Solidity source code and other metadata about Ethereum smart contracts can easily and systematically be retrieved. We present Smart Corpus’s design and its initial implementation, and we show how the data set of smart contracts’ source codes in a variety of programming languages can be queried and processed to get useful information on smart contracts and their software metrics. Smart Corpus aims to create a smart-contract repository where smart-contract data (source code, application binary interface (ABI) and byte code) are freely and immediately available and are classified based on the main software metrics identified in the scientific literature. Smart contracts’ source codes have been validated by EtherScan, and each contract comes with its own associated software metrics as computed by the freely available software PASO. Moreover, Smart Corpus can be easily extended as the number of new smart contracts increases day by day
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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