1,720,954 research outputs found
A Mapping Research on Cofiring from 1979 - 2022: Bibliometric Analysis
No full textThis study aims to investigate cofiring-themed articles through Bibliometric analysis using Biblioshiny. The metadata comes from the Scopus database, obtained using the keyword "cofiring". Nine hundred twenty-nine documents were obtained over 44 years (1979 – 2022). The study results show that the USA and China are hosts for cofiring researchers. The most relevant author and affiliate is from China, namely Longtu Li from Tsinghua University. The USA is the largest reference country for cofiring research. Cofiring research trends are divided into two clusters: the energy and power generation research cluster and the chemistry and ceramic materials research cluster. In energy and power generation research, three research themes relevant to current and future conditions are related to coal, biomass, and emission. The results of this study provide a comprehensive picture to academics in the fields of energy, power generation, chemistry, and materials science
Cofiring Effect of Using Sawdust on Exhaust Emissions at the Steam Power Plant: Pengaruh Cofiring Menggunakan Sawdust Terhadap Emisi Gas Buang Pada PLTU
No full textAchieving the national energy mix in 2025 requires accelerating capacity development in new and renewable energy.Utilization of new and renewable energy potential aims to achieve the national energy mix target. One of the new renewable energy that has the potential to be developed in Indonesia is Biomass for fuel. One of the efforts to increase the use of biomass is by Cofiring. Biomass can be an effective alternative energy, in order to minimize the use of fossil fuels. The biomass is mixed into the coal bunker. The fuel mixture is flowed into the combustion chamber or furnace. Some of the advantages of doing biomass in PLTU include relatively lower investment and better environmental impact when compared to 100% coal. Cofiring PLTU has an effect on exhaust emissions, in evaluating the impact of exhaust emissions as a benchmark for environmental parameters, cofiring testing is carried out with reference to the Emission Quality Standard (BME).As a result, the effect of cofiring using 5% sawdust still has no significant effect on exhaust emissions at the CEMS (Continuous Emissions Monitoring System) PLTU. It is very possible that the type of coal used is still very influential on emission conditions, considering that the percentage of biomass used is still very small
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
Effect of Cofiring Using Sawdust on Steam Coal Power Plant Heat Rate Value
No full textGuna mencapai bauran energi nasional tahun 2025 perlu akselerasi pengembangan kapasitas energi baru terbarukan. Salah satu energi baru terbarukan yang berpotensi dikembangkan di Indonesia adalah biomassa untuk bahan bakar, dengan cara co-firing. Biomassa bisa menjadi energi alternatif yang efektif, guna meminimaslir penggunaan bahan bakar fosil. Biomassa bisa dicampurkan kedalam bunker batubara, campuran bahan bakar tersebut di alirkan menuju ruang bakar atau furnace. Beberapa keuntungan penggunaan biomasa pada PLTU antara lain investasi relatif lebih rendah dan dampak lingkungan lebih baik jika dibandingkan dengan yang 100% batubara. Serbuk kayu ini merupakan limbah produksi karena tidak dapat menghasilkan produk (output) yang bernilai tinggi dari segi ekonomi. Sawdust/Serbuk kayu sisa hasil pengerajin. Perhitungan tara kalor dengan metode input-output, dilakukan dengan cara menghitung total konsumsi bahan bakar dalam satuan kg/jam, dikalikan dengan nilai kalor rata-rata batubara selama pengujian kemudian dibagi dengan rata-rata daya yang dihasilkan dalam satuan kWh/jam, sehingga didapatkan energi. Kesimpulannya Penggunaan subtitusi pembakaran dengan cara menambahkan sawdust pada boiler dengan blending 95% Batubara dan 5% sawdust tidak ada perbedaan signifikan, hasil perhitungan heat rate metode input-output nilai GPHR coal firing 2649 kCaI/kWh, sementara nilai GPHR co-firing yaitu 2705 kCal/kWh, dengan penurunan kWh produksi gross sebesar 1% pada saat co-firing. Nilai SFC relatif sama yaitu SFC coal firing adalah 0,617 dan SFC co-firing adalah 0,621. Dari hasil perhitungan heat rate metode heat loss didapatkan efisiensi boiler saat coal firing adalah 84,34% sementara saat co-firing adalah 84,72%. Nilai GPHR pada saat coal firing adalah sebesar 2.668,37 kCaI/kWh dan saat co-firing adalah 2.688,16 kCal/kWh
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