1,721,026 research outputs found
Design of EWMA and CUSUM control charts subject to random shift sizes and quality impacts
No full textLocally-pumped repeatered and remotely-pumped repeaterless 1.55 μm CATV video lightwave systems over 127 km standard singlemode fibre
No full textChirped-fibre-grating-based optical limiting amplifier for simultaneous dispersion compensation and limiting amplification in 10 Gbit/s G.652 fibre link
No full textVirus Diseases of Lisianthus in Taiwan
No full text洋桔梗(lisianthus, Eustoma russellianum) 病毒病害於過去20 年間陸續在台灣地區發生，目前已有9 種病毒病害被發現，包括菜豆黃化嵌紋病毒( Bean yellow mosaic virus , BYMV)、洋桔梗嵌紋病毒( Lisianthus necrosis virus ,LNV)、胡瓜嵌紋病毒( Cucumber mosaic virus , CMV)、蕪菁嵌紋病毒(Turnip mosaic virus, TuMV)、蠶豆萎凋病毒2 ( Broad bean wilt virus 2, BBWV-2)、番茄嵌紋病毒 ( Tomato mosaic virus , ToMV)、藿香薊黃脈病毒(Ageratum yellow vein virus, AYVV)、康乃馨斑駁病毒(Carnation mottle virus, CarMV)和番椒葉脈斑駁病毒 (Pepper veinal mottle virus, PVMV)。新興的洋桔梗病毒仍陸續被發現，其中包括黃金葛潛隱病毒(Pothos latent virus, PoLV)和咸豐草斑駁病毒(Bidens mottle virus , BiMoV)，將於本文中略述之，並及於部分洋桔梗病毒之研究情形。
Lisianthus (Eustoma russellianum) with virus infections were found field during the past decades in Taiwan. Nine different viruses have been identified in the past decade. Bean yellow mosaic virus (BYMV) was the first being detected in lisianthus, followed by Lisianthus necrosis virus (LNV), Cucumber mosaic virus (CMV), Turnip mosaic virus (TuMV), Tomato spotted wilt virus (TSWV), Broad bean wilt virus (BBWV), Tomato mosaic virus (ToMV), Tomato yellow leaf curl virus (TYLCV) , and Pepper veinal mottle virus (PVMV). Researchers have characterized most of these viruses in Taiwan serologically and molecularly. However, new viral diseases keep emerging in the field still. Some of the new lisianthus diseases caused by viruses, such as Carnation mottle virus (CarMV), Bidens mottle virus (BiMoV), and Pothos latent virus (PoLV), will be discussed in this seminar
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
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