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(22(3):172-185)X光線誘發之稻染色體微小變異半不稔性之研究
No full textAmong the 87 X3 lines of rice segregated for seed fertility, 22 were found normal in chromosome behavior at diakinesis or metaphase-I in both fertile and semisterile plants. The frequencies of the individual seedset percentages in most of these 22 lines distributed in continuous manners, otherwise in a ratio of 1:1. Semisterile plants of 1:1 segregating X3 lines tended to produce progenies segregated in 1:1, while those of the continuously segregating lines showed relatively unstable breeding behavior. The fertile plants in the stable X4 lines were testcrossed on the original variety, Taichung 65, and 12 homozygotes that set seed normally and bred true were isolated. The similar segregation for seed fertility re-occurred in the respective testcross F2.
The percentages of seed fertility and stainable pollen of the intercross F1’s between these homozygotes were, respectively, 14.9%-42.5% and 31.9%-50.0%. Five to 15% of intermediately aborted pollen were observed in the F1’s related with specific homozygotes.
The frequencies of seedset and stainable pollen percentages in most of the intercross F2’s distributed in continuous manners similar to those reported in the F2 of the intersubspecific hybrid of rice.
1. 本試驗以研究水稻品種臺中65號經X光線處理後誘發之半不稔性及其遺傳行動為目的，尤其是以顯微鏡不易查出的染色體微小變異者為對象。由10kr，20kr，30kr處理過的X2材料中逢機取出87X3。半不稔系統，其中有22個系統分離半不稔個體而其花粉母細胞在肥厚期和第一中期只形成3%或以下的一個四價染色體，或者都是正常。這些系統可認為染色體構造正常或發生微小變化者。
2. 含有四價染色體的花粉母細胞之百分比少於3%的X3半不稔系統，除了成以一比一分離結實與半結實個體外，尚有許多成連續性分離者。一比一分離系統內的半不稔個體大部分產生同樣分離之後代，但連續性分離者去 p 產生四種不同分離型式之後代。
3. 從四價染色體百分比低於3%的系統內，取其結實個體數株，並回交於原品種。根據此測驗交配的結果，分離出12個稔性正常又固定之同型接合體。連續性分離系統的測驗交配F1有58.2%-64.8%之結實率，一比一分離系統的測驗交配 F1有44.4%-54.8%。上述稔性分離現象無論是一比一或連續者，都能於測驗交配 F2族羣中再度出現。
4. 將上述12個同型結合體互相什交，結果互相什交F1的結實率變異於14.9%-42.5%，而正常花粉率變異於31.9%-50.0%之間。此等F1並沒有單性結果的現象。與一個同型結台體系統有親綠關係的F1均發現有半退化花粉，約變異於5%-15%之間。
5. 同型接合體間互相什交F2族羣中，個體的結實率分離甚廣，與一般秈梗型稻品種問什交F2者相似。至於此種半不稔性是否存在於天然品種之間，猶待今後之探求
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
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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