1,721,007 research outputs found
2-dimensionale Modellierung des Röhrenspaltofens der ADAM/EVA II Anlage
No full textFor the steam reformer of the ADAM/EVA II facility a 2-dimensional computer code is made, which includes local radiation quantities and by-pass circuits. Not only integral sizes (reaction, fission end temperature) and curve states as well as individual tube states are computable by this programme. It is shown that the experimental results are to understand very good with this model. For a steam reformer with NTIW-geometry in the 20 MW range the model was changed. Finally an anchor cooling is proposed to release the thermalmechanical heavily loaded supporting structure. It is possible to describe quantitatively the cooling effect with the plottedcomputer code. It shows that the anchor wall temperature falls round about 50 K in a 5 % cooling circuit. This could prevent the extension of anchors, as well as prolong the lifetime of the bundle and make possible the competence of license
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
A Analisis Karakteristik Stomata Daun Rhoeo discolor (Adam Eva) Berdasarkan Waktu Pengambilan Sampel yang Berbeda
No full textStomata are important structures in leaves that function in gas exchange and regulating air loss. The research focuses on the characteristics of Rhoeo discolor leaf stomata which are influenced by sampling time, taking into account environmental factors such as light, temperature and humidity. The aim of this research is to provide insight into the physiological adaptation of tropical plants to environmental change. The method used includes observing stomata in the morning (08.00 WIB) and afternoon (16.00 WIB) using a light microscope, where five samples are taken at each observation time to analyze the number of open and closed stomata. The results showed that the average number of open stomata was higher in the morning (24 stomata) than in the afternoon (17 stomata). This results in high stomata density in the morning, while in the afternoon it is low. Not only that, for the characteristics of stomata based on the location of the stomata on the leaf surface, the Rhoeo discolor stomata type is the Amphistomatic type. Meanwhile, based on its shape, the type of stomata that these stomata have is the tetracytic stomata type. In conclusion, sampling time has a significant effect on the characteristics of stomata in Rhoeo discolor, with more stomata opening in the morning associated with higher light intensity, supporting the efficiency of photosynthesis and air use in plants.
Keywords: Stomata, Rhoeo discolor, Photosynthesis, Environmental ConditionsArtikel ini membahas tentang karakteristik stomata pada daun Rhoeo discolor (Adam Eva) berdasarkan waktu pengambilan sampel, dengan fokus pada mekanisme buka-tutup stomata yang dipengaruhi oleh faktor lingkungan seperti cahaya, suhu, dan kelembaban. Penelitian dilakukan dengan pengamatan stomata pada pagi pukul 08.00 dan sore hari pukul 16.00 WIB. Untuk pengamatan dilakukan dengan lima kali sampel untuk diamati setiap waktunya. Pengamatan menggunakan mikroskop cahaya untuk menganalisis jumlah stomata terbuka dan tertutup. Hasil menunjukkan bahwa rata-rata jumlah stomata terbuka lebih tinggi pada pagi hari (24,2 stomata) dibandingkan sore hari (17,0 stomata). Sehingga menghasilkan hasil kerapatan stomata pagi tergolong tinggi, sedangkan sore rendah. Stomata pada pagi hari lebih banyak yang terbuka karena dipicu oleh peningkatan intensitas cahaya matahari, yang merangsang sel penjaga untuk membuka. Pembukaan stomata ini penting untuk memasukkan karbon dioksida (CO2) yang diperlukan dalam proses fotosintesis. Temuan ini memberikan wawasan tentang adaptasi fisiologis tumbuhan tropis terhadap perubahan lingkungan dan efisiensi penggunaan air serta fotosintesis. Tidak hanya itu, untuk karakteristik stomata berdasarkan lokasi stomata pada permukaan daun, tipe stomata Rhoeo discolor (Adam Eva) adalah tipe Amphistomatik yaitu stomata yang berada pada kedua permukaan daun (adaksial dan abaksial). Sedangkan berdasarkan bentuknya, tipe stomata yang dimiliki oleh stomata tersebut adalah tipe stomata tetrasitik
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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