1,720,954 research outputs found
Evaluation of major foliar diseases in commercial oil palm nurseries for improving disease management
Full text linkField surveys were conducted in nine selected oil palm nurseries in Peninsular
Malaysia including government and private nurseries which provided and supplied oil
palm planting materials in Malaysia. Studies covered 4 nurseries in Johor (Kluang,
Bkt Tongkat, Kahang and Ayer Hitam), 3 nurseries in Perak (Teluk Intan, Permatang
Guntung and Kg Bakar Arang) and 2 nurseries in Selangor (Sepang and Kuala
Langat). The disease evaluation revealed that leaf spot disease was a major problem
with the highest mean incidence is 62.81% compared to anthracnose disease at
16.52%. For disease incidence of leaf spot disease, the highest incidences were
recorded in Kuala Langat, Selangor (90.3%) and Kluang, Johor (87.7%). The least
incidences of leaf spot were recorded in 3 nurseries in Perak occurring between 50 to
55%. For assessment of disease incidence of anthracnose, the highest incidence was
recorded in Kuala Langat, Selangor (45.0%) and the least incidences were recorded in
6 nurseries which were located in Johor and Perak occurring between 8.0 to 14.0%.
For assessment of disease severity, high severities for leaf spot disease were recorded
in Kluang (64.7%) and Kahang, Johor (59.22%). Besides, the least severity was
recorded in Permatang Guntung, Perak with 19.23%. For severity of anthracnose, high
severities were recorded in Kuala Langat, Selangor (9.1%) and Teluk Intan, Perak
(6.57%) and the least severities were recorded in 6 nurseries which were located in
Johor and Perak occurring between 1.0 to 2.5%. The study also found disease
incidence of leaf spot and anthracnose diseases were both highly significant with
different age of seedling. As the seedling became older, incidence of leaf spot and
anthracnose diseases were reduced. For leaf spot disease, seedling 0-4 month score the
highest percentage at 77.47% followed by 4-12 month which was 72.89% and seedling
with age 12 month and above were most resistance with lowest score 49.0%. This was
similar with disease incidence of anthracnose for 0-4 months (21.56%), 4-12 months
(16.86%) and with the least incidence was observed in seedlings aged 12 months and
above at 14.89%. For interaction of seedling age with disease severity of leaf spot, study revealed that there was highly significant relationship between disease severity
and seedling ages. Seedling with age 0-4 month were most susceptible and severely
affected (50.90%) followed by seedling age 4-12 month (39.84%) and the most
resistance seedling age is comes to seedling with 12 month and above with only
18.4%. However, for disease severity of anthracnose, there was no significant
relationship. Study found that, these three stages of ages which were 0-4 month
(3.5%), 4-12 month (3.83%) and 12 month and above (3.31%) score the disease
severity with mostly the same with each other. The symptoms of leaf spot and
anthracnose diseases also were recorded and characterized based on field observation.
For isolation of pathogen, study indicated that anthracnose was found to be associated
mainly with Colletotrichum spp. Meanwhile, leaf spot was found mostly associated
with Curvularia sp., and Pestalotiopsis sp. For interaction of agricultural practices
with disease incidence and severity of leaf spot, study found that there was no
significant correlation between disease incidence of leaf spot with irrigation system,
frequency of watering, mulching and water sources for seedling 0-4 month and 12
month and above. However, for seedling 4-12 month, there was negative correlation
between water sources with leaf spot incidence (-0.76*) and severity (-0.84**). For
anthracnose disease, there was no significant correlation between disease incidence
and severity with irrigation system, frequency watering, mulching and water sources
for seedling 0-4 month, 4-12 month and 12 month and above
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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