1,721,003 research outputs found
Introduction to Soil Science
No full textThis textbook introduces readers to the basics of soil science, including: the physical, chemical, and biological properties of soils; soil formation, classification, and global distribution; soil health, soils and humanity, and sustainable land management.This textbook is published as Anderson, Amber (2022). Introduction to Soil Science. Iowa State University Digital Press
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
The science, beauty, and future of Iowa's soils
Get PDFHistory of Iowa's land use
If we were to go back in geologic time, we would find the soils and landscapes of Iowa to be completely different from the ones we see out our windows today. That is because Iowa has a wonderfully dynamic natural history that includes a shallow sea turning into land that was repeatedly modified by huge glaciers, incredible dust storms, and downcutting river valley, as well as "waves" of forest and prairie swept back and forth as climate cycled through wet/dry and cold/hot periods. If we go back to the time of the Louisiana Purchase our beautiful crop fields would instead be equally beautiful prairie, forest, and wetland landscapes dotted with rivers and lakes that were surrounded by vibrant Sioux, Meskwaki, and other Native American peoples. Many of these same places are home to our modern cities of today. In other words, our place, Iowa-and every place in the world-is just like an old canvas with a painting or an old wall in a farmhouse. Buried in it are layers of history, each layer having its own beauty. It is the job of soil scientists to sort out these layers because
a modern soil is the product of everything listed above-geology, vegetation, climate-and all of it changes with time, which in turn changes the soil.This chapter is from Anderson, Amber and C. Lee Burras. “The science, beauty, and future of Iowa’s Soils” Compelling Ground: Landscapes, Environments, and Peoples of Iowa . Edited by Sheila Mauck and Adrienne Gennett, University Museums, Iowa State University, Ames, Iowa, 2021, Pages 47-53. Published on the occasion of the exhibition held at the Brunnier Art Museum, January 25-July 23, 2021
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
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