1,720,987 research outputs found
DENTAL DISEASE IN SOWS: EARLY FINDINGS
No full textJohnson, E.W.; Curtis, Stanley; Ellis, Michael. (2003). DENTAL DISEASE IN SOWS: EARLY FINDINGS. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/160309
Boron Supplementation Prevents Osteochondrosis in Growing Swine
No full textJohnson, E.W.; Petersen, Phil; Burrus, Todd; Doyle, Kenneth; Curtis, Stanley. (2005). Boron Supplementation Prevents Osteochondrosis in Growing Swine. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/157789
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
Comprehensive evaluation of well-being in pigs: Environmental enrichment and pen space allowance
No full textAn experiment was conducted to provide comparative scientific evidence for the well-being or ill-being of pigs while residing in different environments under intensive housing conditions. Four categories of indices--viz., productivity, including growth and feed-efficiency performance and health; physiology; immunology; and behavior were used for assessing the well-being of the animals involved. Productive, health, physiologic, immunophysiologic, and behavioral traits related to indicators of well-being were measured in 512 growing-finishing pigs in a 2 x 2 factorial experiment, the two factors being environmental enrichment and pen size.The results with respect to productive performance indicated that pigs' body-weight gain and feed conversion efficiency were similar regardless of treatment. However, lesion scores throughout the experiment were consistently higher in the enriched pens as compared to the barren. Based on the results for the productivity indicators it is suggested that the enriched environment did not improve pig well-being as compared to that of conspecifics in the relatively barren confinement environment.The results with respect to the physiologic traits--viz., gastric ulceration, adrenal weight, basal cortisol concentration, and ACTH challenge--as well as the immunophysiologic traits--viz., intradermal response to phytohemagglutinin and delayed-type hypersensitivity reaction to sheep red blood cells did not differ due to treatment variables. Based on these indicators it was concluded that pig well-being was similar across treatments.Results with respect to behavioral indicators--viz., general behavior patterns, use of manipulanda, reaction to novelty, and defecation patterns revealed only few differences due to the treatment variables imposed. However, a test of the pigs' reaction to a novel situation indicated that animals in the enriched pens were less fearful than those in the barren. Although most of the indicators did not differ across treatments, the results did suggest that provision of enrichment features might have rewarded the pigs in a positive way and led to improved psychological well-being as compared to that experienced by conspecifics in the nonenriched environment.Made available in DSpace on 2011-05-07T13:11:41Z (GMT). No. of bitstreams: 2
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Design of the sow feeder: A systems approach
No full textA multidisciplinary approach was used to study the design of feeders for sows. This included: (1) the evaluation of commercially available feeder designs; (2) a survey of sows' head, front torso, and gross body dimensions; (3) a description of the kinematics of eating in sows; and (4) the design and evaluation of prototypes leading to the development of an effective feeding device for sows.A ninety-six-fold difference in mean feed leavage and a nineteen-fold difference in mean feed spillage were found across the ten commercially available models of sow feeder studied. Leavage and spillage were found to be affected by both the particular model's design and individual differences among sows in how they ate. There was the suggestion of a strong relationship between the nature of the feed-access space provided by a design, the spatial requirements of the sow's size, shape, and eating posture and movements, and the resulting effectiveness of this combination. Large, consistent differences among feeder designs also were observed in terms of injury to the sow and maintenance and sanitation factors.Thirteen linear external body measurements as well as body weight were registered for each of 84 sows representing various genetic backgrounds and ages. Gross body and, more specifically, head measurements relevant to the sow's eating posture and movements were recorded to form a data base from which the initial suggestions of the dynamic-dimensional criteria for sow feeder design could be drawn.If allowed to eat in a spatially unrestricted fashion, the sow in general displays little body movement except for the rhythmic actions of mandible, rostral disc, and tongue. Dynamic space envelopes were defined using empiric relationships based on certain static head dimensions. These envelopes can be used to evaluate the suitability of feeder designs.A sow feeder was designed that facilitated comfortable, noninjurious, nonwasteful (.5%) eating by the sow. These design improvements were made possible by the increased understanding of the sow's needs resulting from earlier phases of this dissertation research. To achieve this, the sow was directly involved in the design process.Made available in DSpace on 2011-05-07T12:40:08Z (GMT). No. of bitstreams: 2
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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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