1,721,899 research outputs found
The timing of third molar removal in patients undergoing a bilateral sagittal split osteotomy
No full textDevelopment of a planning tool for network ancillary services using customer-owned solar and battery storage
No full textThis paper presents a practical method for estimate the state of charge (SoC) of customer-owned solar PV and battery assets on a site-by-site basis in real-time. Starting from the assumption that there is a preceding agreement between customers and network operator, the tool makes a day-ahead estimation of the SoC of the battery. This considers the local PV generation and consumption of the customer and assumes the system is operating to optimize performance with regards to tariffs, operating costs and network agreement. A model-based observer is used to predict SoC 24 hours ahead. The model considers customer consumption and PV production which are separately forecasted and used to estimate the SoC of the battery one day ahead. Since the forecasts are uncertain, a Monte Carlo approach has been considered in order to estimate an upper and lower bound of the SoC over time. With this information the utility can make its choices on Ancillary Services resources allocation one day ahead. Simulation results are presented using input data from a real system. © 2017 IEEE
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
Power quality in smart distribution grids
No full textDemand Side Management requires both an adequate architecture to observe and control the status of the power grid and precise and real time measurements on which rely. In case of frequency fluctuations, precision is no more guaranteed so without adding more hardware the authors exploit FFT interpolation to estimate the real frequency of electrical signals. After the discovery phase follows the measurement phase in which a low cost Smart Meter computes the metrics specified in the following chapters. Finally, a comparison among measures taken by a reference instrument and the proposed meter is reported. © 2015 IEEE
A fully Eulerian multiphase model of windblown sand coupled with morphodynamic evolution: Erosion, transport, deposition, and avalanching
Full text linkModeling unsteady windblown sand dynamics requires not only treatment of the sand present in the air as a suspended constituent of a mixture but also consideration of erosion and sedimentation phenomena and consequently of the morphodynamic evolution of the sand-bed surface, including avalanching, especially in the presence of natural or human-built obstacles, artifacts, and infrastructures. With this aim in mind, we present a comprehensive multiphase model capable of accurately simulating all the physical phenomena mentioned above, producing satisfactory results, with reasonable computational effort. As test cases, two- and three-dimensional simulations of dune evolution are reported, as is windblown sand transport over a straight vertical wall. Examples of sand transport around other obstacles are given to show the flexibility of the model and its usefulness for such engineering applications
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
Peculiar elements of diffusion in the interlocutory judgment. The requirements of "relevance" and "not manifestly unfounded" in the assessment by the judge a quo.
No full textreservedIl nostro modello di giustizia costituzionale si configura come un sistema di tipo "misto", nel quale il giudice remittente svolge un ruolo essenziale, in quanto funge da introduttore necessario del procedimento incidentale. Questo elaborato analizza i requisiti fondamentali di ammissibilità della questione di legittimità costituzionale, ossia "rilevanza" e "non manifesta infondatezza", alla luce della valutazione da parte del giudice a quo
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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