1,720,957 research outputs found
Picking Apples off the Grazing Tree: How Far Can We Extend the Grazing Season Profitably?
Full text linkWill grazing more and feeding less hay always increase profitability? There are many cases where cattle farmers could graze more days profitably. I would guess that more than half the cattlemen in Kentucky and the region could find ways to do so. But the statement is not universally correct and we need to evaluate the specific situation to determine if increasing grazing days will pay off
Fixed Costs in Hay Production
Full text linkWhen hay producers estimate cost of production they often focus exclusively on “cash costs” or variable cost of production such as fuel, repairs, supplies, fertilizer, labor (if hired), and rent (if leased). They all too often ignore their “fixed costs” of production such as depreciation, interest, labor (if family), insurance, and certain taxes. Although there are legitimate reasons to concentrate on cash costs in the short-run, it is a mistake in the long-run, as these are real costs. Fixed costs for equipment are often ignored because they are generally paid in lump sums, and thus there is a disconnect between equipment use and these costs. For example, each time you fill up the fuel tank you have a good estimate on the fuel cost for the running the tractor for the last ten hours. The same is not true for depreciation or interest on that tractor. You probably have no idea what that costs you
Pasture Finishing Beef Opportunities in Kentucky
Full text linkBeef cattle were routinely finished locally in Kentucky before the 1950’s, primarily on pasture with some grain and by-products from distilleries. Cattle were typically born, raised, and finished on the same farm, sent to a local butcher, and the meat sold in nearby communities and cities. This all changed after the Second World War as grain and transportation costs decreased dramatically in conjunction with the establishment of supermarket chains that required a large, steady supply channel. The combined effect of these changes made finishing in large centralized locations more economical. Over the next couple of decades the finishing industry consolidated, and feedlots sprung up across the Great Plains1 to finish the bulk of the nation’s cattle
Stockpiling Tall Fescue: Cost & Return
Full text linkAn opportunity that Kentucky cattle farmers have in reducing their hay requirements is to apply nitrogen on select pastures to stockpile for fall and winter grazing. By increasing the total pasture production during this time period, the grazing season can be extended and the amount of hay required can be reduced
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
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