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Preliminary Observations on Varietal Reaction to Cercospora Leaf Spot of Banana
No full text葉斑病為本省香蕉主要病害之一， 全年危害各地蕉園， 尤以雨季流行最速。葉斑病發生嚴重時，香蕉葉片被毀，影響果實產量與品質甚鉅。為了選擇抗病性優良品系以根本解決葉斑病為害，並檢定各品系之抗病性，進而研究選育抗病性品系，作者自民國五十五年九月開始，在嘉義農業試驗分所進行觀察杳蕉品系葉斑病感應性，初步所獲結果如下：（一）供觀察香蕉品系55種中，在田間自然發病環境下，有25品種未發現有感染葉斑病之病徵；另外 Boyang 和紅皮蕉二種，僅發現在少數老葉上有病斑可能亦具有抗病性；其餘28品系則顯示對葉斑病具有感病性或高度感病性，感病指數在0.63 -1.19之間。仙人蕉之感病指數為所有品系中最高者，足見仙人蕉為一高度感病性品種。
（二）由高屏地區仙人蕉品種中選取之優良母株106株調查對葉斑病之感應性結果， 未見有抗病性者存在，植株間對葉斑病感應性差異不大。根據觀察結果，顯示由仙人蕉品種內進行抗病性優良系統選種之期望很少，但因此項觀察株數不多，今後擬增加選種株數或於病害嚴重流行時，直接到香蕉各主要產地進行選種，冀可獲得具有抗病性優良之突變系統。
（三）葉斑病之發生與氣候因子有密切關係，本項觀察期間，因氣候乾旱，病害發生並不嚴重，因正在感病性品系所示之感病指數都不高。品系間抗病性之差異除繼績在田間進行觀察外，並將利用人工接種方法以檢定具有抗病性之品系。
Observations on the varietal reaction to Cercospora leaf spot of banana were conducted at the Chiayi Agricultural Experiment Station, Taiwan Agricultural Research Institute from September, 1966 to February, 1967. Fifty-five banana varieties/clones including the materials collected from native and Tropical Asia, and 106 plants selected from the Hsien-ien-chiao variety were used in this observations. According to the preliminary results obtained, it is evident that there is a distinct difference in the reactions of the observed varieties to leaf spot of banana ranging from highly resistant to highly susceptible. Among the 55 entries, 25 of these showed no attacked symptom, while 28 were either susceptible or highly susceptible, and another two varieties, namely, Boyang and Hung-pi-chiao, giving a low infection index may be classified as resistance (Table 1). Furthermore, no plant was observed among the 106 plants selected from the commercial variety, Hsien-ien-chiao, to be resistant to the disease (Table 2). Unfortunately, the Hsien-jen-chiao variety gave the highest infection index among the varieties tested, and, it was proved very susceptible to leaf spot. Since the weather condition during the observation period was not favorable to take place the disease seriously, therefore, the infection indices are very low as shown in all the diseased varieties. However, the disease was greatly influenced by the climatic factors, and a close relation was found between plant infection index and relative humidity (Fig. 1). More studies on the susceptibility of banana varieties/clones to leaf spot are in progress
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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