1,720,956 research outputs found
Preliminary results of the experimental assessment of the SWINGO wave energy system
No full textAchieving large-scale commercial exploitation of ocean wave energy necessitates the design and testing of various wave energy concepts, in an effort to identify viable solutions capable of reducing the associated levelised cost of energy to competitive levels. Within this framework, conducting experimental tests plays a crucial role in evaluating emerging concept designs, providing valuable insights into the strengths and challenges inherent to a specific technology. Among the concepts introduced in recent years is the SWINGO device, distinguished by its gyropendulum inner mechanism, which facilitates energy absorption from waves approaching from various directions. In this paper, to evaluate the actual capabilities of this device, the SWINGO wave energy conversion system was subjected to comprehensive testing during an experimental campaign at Oregon State University’s wave tank facility. The campaign was directed at advancing research on this innovative omnidirectional wave energy system by rigorously examining its response to a range of wave conditions. This investigation was pivotal for understanding the system’s capacity to optimise energy capture via its gyropendulum conversion mechanism. This paper delineates the experimental setup, and the preliminary outcomes of these explorations, with a special focus on the device response under controlled and uncontrolled conditions
Experimental Investigation of a Novel Concept of Modular Multi-purpose Floating Structures
No full textModular Multi-purpose Floating Structures (MMFS) provide a possible solution to the growing need for space resulting not only from the rapidly growing global population but also from the expanding blue economy sector. The desired space is generated in a more sustainable way than land reclamations methods, by interconnecting together standardized floating modules, making this technology adaptable and suited to a broad range of possible open sea application. Herein, this study aims to investigate the dynamical response of a system composed by three floating hexagonal modular platforms connected via semi-rigid connectors and moored at the seabed with a taut mooring configuration. An experimental investigation has been carried out on a 1:50 prototype at the wave basin of the Laboratory of Hydraulic Engineering (LIDR) of Università degli Studi di Bologna. The objective of the paper is the experimental validation of the proposed technological concept, through the assessment of the loads acting on the system and the evaluation of comfort indices for various representative sea states. The preliminary results show the trends of the loads acting on the connection system and the mooring system, which are essential for the correct design of the full-scale system. Additionally, the comfort and safety indices are met for all the analyzed sea states, demonstrating the validity of the proposed design
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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