1,720,953 research outputs found
PEMUPUKAN N, P, DAN K SPESIFIK LOKASI PADA TANAMAN JAGUNG
Full text linkABSTRACT Fertilizer Recommendation of N, P and K Site-Spesific Location for Maize Cropping in Gowa District, South Sulawesi. Agroecosystem of maize cropping areas in Indonesia is very varied. Site-specific fertilization can improve efficiency and productivity, increase farmer’s income and support sustainability of production system, environmental safety as well as saving energy resources. This research aimed to obtain fertilizer recommendation of N, P, and K for maize in specific location based on agro-ecosystem cropping areas. The research was carried out in Gowa district, South Sulawesi from March to September 2012. A survey method was used to collect data using questions in Nutrient Expert (NE) program forms. Average yield productivity of farmers’ field, yield potential or highest yield, physical and chemical properties of soil, crop management, fertilizers application at each maize cropping area were grouped and simulated using NE program to determine fertilizer dosage. Dosage obtained through NE simulation program then was used to analyze Marginal Rate of Return (MRR). Simulation results were feasible as recommended fertilizer if value of MRR >100%. Results of this research showed that site-specific fertilizer recommendation for maize in lowland of Gowa District were 190-210 kg N, 30-66 kg P2O5, and 33-55 kg K2O per hectare with MRR value at 180-479%, which could increase yield up to 3.3 t/ha; whilst on dryland,the dosage of N, P2O5 and K2O were 90-170 kg, 47-57 kg, 33-63 kg per hectare, respectively with MRR value 180-407%. It increased yield up to 2.7 t/ha. Although the fertilizer recommendations had a higher cost than existing fertilizer application at the farmers level, the gross revenue, income and RC ratio were higher than existing fertilizer application both in lowland and dryland. Recommended fertilizer dosages were able to decrease N fertilizer application in lowland up to 32.3 kg/ha, and on dryland 34.3 kg/ha. However, it also caused the increasing of P application by 35.7 kg and 36.4 kg K2O in lowland, whereas in dryland up to 31.5 kg P2O5/ha and 38.5 kg K2O. The recommendation of site specific fertilizer application is very useful and beneficial to increase maize productivity. Keywords: fertilization, site-specific, cornABSTRAKAgroekosistem pengembangan jagung di Indonesia sangat beragam. Pemupukan spesifik lokasi dapat meningkatkan efisiensi pemupukan, produktivitas, pendapatan petani, mendukung keberlanjutan sistem produksi, kelestarian lingkungan, dan penghematan sumberdaya energi. Penelitian ini bertujuan mendapatkan rekomendasipemupukan N, P, dan K spesifik lokasi pada tanaman jagung berdasarkan agroekosistem lahan. Penelitian dilaksanakan di Kabupaten Gowa, Sulawesi Selatan Maret sampai September 2012. Metode survei digunakan dalam penelitian ini. Data dikumpulkan berdasarkan pertanyaan pada isian program Nutrient Expert (NE). Data rata-rataproduktivitas yang diperoleh petani, potensi hasil atau hasil tertinggi yang pernah dicapai, sifat fisik dan kimia tanah,pengelolaan tanaman, pemupukan pada masing-masing sentra pertanaman jagung dikelompokkan dan disimulasikanmenggunakan program NE untuk menentukan takaran pupuk. Marginal Rate of Return (MRR) selanjutnya dianalisi
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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