1,720,980 research outputs found
Development of realtime, handheld and portable flood distribution and water quality sensor based android smartphone
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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
ANALYSIS OF A SOLAR PHOTOVOLTAIC SYSTEM TO SUPPORT THE ENERGY REQUIREMENTS OF LIQUID CRYSTAL DISPLAY (LCD) PROJECTORS IN THE FACULTY OF ENGINEERING BUILDING 2, UNIVERSITAS TIDAR
No full textThis study presents the analysis and design of a small-scale off-grid solar photovoltaic (PV) system to supply the electrical energy requirements of Liquid Crystal Display (LCD) projectors used in nine classrooms at Faculty of Engineering Building 2, Universitas Tidar. LCD projectors operate for approximately 10–11 hours per day, resulting in a total daily energy demand of 29.7 kWh. The objective of this research is to (1) analyze the daily load profile of projector usage, (2) determine the appropriate capacity of PV modules, batteries, and inverter, and (3) evaluate the techno-economic feasibility of the proposed system. Data collection was carried out through field observation, device power measurement, rooftop area assessment, and retrieval of solar irradiation data. The system design combines manual engineering calculations with optimization using HOMER Pro software. Results indicate that a PV capacity between 9–10.5 kWp is sufficient to fulfill daily load demand. HOMER simulation recommends an optimal configuration consisting of a 9 kWp PV array, a 3.2 kW inverter, and 17 battery units, yielding a Net Present Cost (NPC) of USD 23,874.79 and a Levelized Cost of Energy (LCOE) of USD 0.296/kWh. The system achieves 100% renewable fraction with minimal shortage. Overall, the designed PV system is technically and economically feasible and can serve as a practical applied-learning resource for engineering students studying renewable energy systems
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
Sifat Listrik Dan Optik Dari Lapisan Tipis ZnO:B Yang Ditumbuhkan Dengan Metode Metalorganic Chemical Vapor Deposition
Full text linkTelah ditumbuhkan lapisan tipis ZnO dengan metode metalorganic chemical vapor deposition (MOCVD) yang menggunakan gas pereaksi dimethylzinc (DMZ) dan H2O. Gas B2H6 digunakan sebagai gas doping tipe-n dan diperoleh lapisan tipis dengan sheet resistivity sebesar 2,42 ohm/sqr pada ketebalan 4,47 pm. Diperoleh bahwa penambahan laju aliran B2H6 lebih lanjut dapat menurunkan sheet resistivity. Sifat optik lapisan tipis ZnO diamati dari pengukuran data transmitansi pada panjang gelombang mulai dari daerah ultraviolet, tampak sampai daerah infra-merah dekat. Celah pita optik diperoleh sebesar 3,10 eV. Diperoleh juga bahwa dengan penambahan laju aliran B2H6,, transmitansi pada panjang gelombang di atas 1100 rim menurun karena absorpsi pembawa muatan bebas.
Kata-kata kunci : lapisan tipis ZnO, doping, sheet resistivity, transmitans
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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