1,720,968 research outputs found
Magneto-mechanical optimization and analysis of a magnetostrictive cantilever beam for energy harvesting
No full textHighway PV capacity potential: A GIS-Driven approach for assessment and prioritization
Get PDFThe increasing electricity demand, driven by electric mobility, has opened up opportunities to use highway areas for photovoltaic systems. Due to the vastness of this infrastructure, identifying suitable areas and estimating the production potential cannot be done manually. In response to this need, this paper presents a methodology for automatically assessing the photovoltaic potential of areas near highways using GIS data. The assessment considers different installation options, taking into account the morphology of the area and the costs of installation and maintenance. Tested on about 3000km of Italian highways, the analysis shows that 85% of the available areas could be used, giving an estimated total capacity of 926MWp and a production of 830GWh per year
Demagnetizing Field Effect on the Detection Range of a Galfenol-Based Magnetic Field Sensor
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Estimation of Photovoltaic Energy Production from Italian Highways
No full textThe increase in electric loads characterized by the growing penetration of electric vehicles and the urgent need to reduce greenhouse gas is giving a strong boost to the deployment of Renewable Energy Sources power plants, in particular Photovoltaic and wind. In this context, the definition of areas suitable for the installation of such plants is a key factor for an efficient and sustainable land usage.The aim of this work is to exploit georeferenced data to estimate the photovoltaic capacity that can be installed in the competence areas of Italian highways
Enhancing Photovoltaic Power Forecasting Using the LGB Model and Synthetic Features
No full textOver the past decade, the growing demand for sustainable energy has led to significant interest in photovoltaic (PV) power generation. Due to its intermittent nature, accurate PV power forecasting is essential for the efficient management and monitoring of PV systems. In this context, the accuracy of meteorological data is critical. However, it is not always possible to obtain such data on a local basis, and often some information, such as irradiance, is obtained from models whose characteristics are not known in detail. To overcome this limitation, this study evaluates five synthetic features that combine clear-sky global horizontal irradiance and cloudiness data to estimate total irradiance in the absence of direct measurements. A light gradient boosting model is used to evaluate the predictive performance of a model using these synthetic features compared to a model based on conventional meteorological inputs, including irradiance. The results, evaluated over a reference week, show that the feature labeled χ5 slightly improves model accuracy (passing from an RMSE of 84.013 to 87.232 W/kWp and R2 from 0.888 to 0.875). These results show that synthetic features can achieve comparable results and in some cases even improve prediction performance
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
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