1,720,974 research outputs found
Optimizing Solar Energy Harvesting: A Comparative Study of PV Panel Performance Through Mathematical Modeling and Real-Time Analysis in Variable Ambient Conditions
No full textAmidst the global push for cleaner energy production, the role of solar power is gaining significant importance. Its cost-effectiveness, lack of emissions, adaptability to available space, and year-round availability make it a compelling choice for energy generation. Photovoltaic panels (PV), crucial for establishing a solar plant, must be efficient for practical energy production. With numerous solar PV panels manufacturers globally, the costs and performance can vary for a given power output. In such a scenario, ensuring their efficiency before installation is essential to enable effective and sustainable energy generation throughout the operation. Therefore, this article proposes to compare the solar PV panel's actual power production with its mathematical model. A MATLAB Simulink-based model is used to analyze the PV panel's performance and compare it with real-time measurements from the panel under local ambient conditions. This comparison will help to identify the best panels to meet the essential requirements. In detail, the PV panel parameters from the manufacturer datasheet are fed to the model so that it behaves as its real-time model (actual panel). The performance obtained from the mathematical model is compared with the experimental data collected over three days. On which the ambient temperatures ranged from 27.9°C to 34.6°C. The results showcased a difference in fill factor between the mathematical model and the experimental data of the actual panel is nearly 20 %
IoT enabled innovative mobility-centric sensor networks for real-time environmental monitoring
No full textThe rapid growth of urbanization and escalating environmental challenges have highlighted the critical need for advanced-monitoring systems. The integration of sensor technologies into environmental-monitoring systems and mobility platforms is transforming urban sustainability efforts. This study presents an approach to environmental-monitoring, utilizing low-cost, high-precision sensor-networks integrated with mobility systems. Recent advancements in sensor miniaturization and wireless communication protocols, particularly Bluetooth-mesh networks, enable real-time acquisition, transmission, and analysis of critical parameters such as air-quality, temperature, humidity, atmospheric toxicity, and crowd dynamics. This study evaluates global initiatives employing innovative sensor-based mobility solutions for environmental data collection, including e-scooters and public transport. Case studies from various cities demonstrate the feasibility and cost-effectiveness of mobile and fixed sensor deployments in urban and peri-urban contexts. Proposed methodology incorporates an onboard sensor-module for e-scooters, featuring ultra-low-power sensors and communication systems, ensuring continuous data-acquisition and seamless integration into smart city infrastructures. Preliminary laboratory tests validate the efficacy of a prototype for temperature and humidity monitoring, highlighting its robustness and scalability. Results from this setup demonstrate the potential of mobility-driven environmental-monitoring systems to enhance urban sustainability, data-driven policymaking, and empower citizen engagement. Future work aims to expand sensor arrays and optimize data analytics for fostering the realization of resilient and adaptive urban ecosystems
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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