1,721,088 research outputs found
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
Review of \u3ci\u3eWildlife Damage Management: Prevention, Problem Solving and Conflict Resolution\u3c/i\u3e
Get PDFWildlife damage management (WDM) is more challenging than it might seem to the uninitiated. As any reader of Human–Wildlife Interactions knows, there is much more to WDM than trapping nuisance raccoons from attics and applying chemicals to ward off deer from ornamental plants. Although these issues are important (especially if it is your attic or landscaping), WDM also encompasses global problems, such as invasive species, wildlife diseases and zoonoses, wildlife–vehicle collisions, and conservation of rare species in human-dominated landscapes. Further, WDM rests on principles from ecology, physiology, animal behavior, human psychology, and economics, all of which must be understood and integrated to maximize potential for resolution of human–wildlife conflicts. Given the complex nature of WDM, the task of writing and organizing a textbook that adequately covers the necessary techniques, applications, and human dimensions is a difficult one. Fortunately, authors Russell F. Reidinger Jr. and James E. Miller have done a commendable job with Wildlife Damage Management: Prevention, Problem Solving and Conflict Resolution. This textbook is a welcome addition to the WDM literature, a subject that increases in importance every year as many human and wildlife populations around the world increase and interact more frequently
Avian Communities of Large Reclaimed Mine Grasslands in Southwestern Indiana
No full textMany bird species native to the tallgrnss prairie region oCthc central U.S. have declined drastically since European settlement due lo the destruction and alteration of grassland habitat. In this study, the breeding bird communities or 21 large reclaimed surface coal mine grasslands in a seven-county area or southwestern Indiana were examined with respect to species and guild composition, density, variation among sites, and grassland size. In addition, the vegetation characteristics of nine large mine grasslands were described and related to the presence and abundance or eight grasslund bird species common to the study areas. The immense size of mine grasslands (~25,000 ha in southwestern Indiana) contributes to their potential for conscrvution or grassland birds. Breeding birds were censused during I.he summer of 1998 using three rounds of 5- minute point counts (N = 253) along mine roads and foot lrnnsccts (45 km combined) in roadless areas. Vegetation was measured on 104 transects adjacent lo roadside bird census points. Bird communities were composed mainly of species characteristic of grassland, shrubland/savannah, and open habitat. Three grassland species, Red-winged Blackbird, Eastern Meadowlark, and Grasshopper Sparrow, accounted for 47.7% of all detections, and five others were common (Dickcissel, Common Yellowthroat, Hcnslow\u27s Sparrow, Northern Bobwhite, and Homed Lark). Red-winged Blackbird, Common Yellowthroal, and Henslow\u27s Sparrow showed preference for larger grasslands in at least one type of analysis. Vegetation was dominated by exotic grasses: tall fescue (Festuca arundinacea), smooth brome (Bromus inermis), orchard grass (Dactylis glomerata), and Japanese brome (Bromusjaponica) accounted for 89% of the grass canopy. Forbs were less than half as abundant as grasses, and woody species were largely absent. Hcnslow\u27s Sparrow exhibited the most strict habitat requirements. responding significantly to seven variables in univariate presence/absence tests, and lo one variable in regression analysis or abundance on vegetation variables
\u3cem\u3eWildlife Damage Management: Prevention, Problem Solving and Conflict Resolution\u3c/em\u3e
Get PDFAppropriate 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
Oneida Lake’s Cormorant Harassment Program – Frequently Asked Questions
Get PDFOneida Lake\u27s cormorant harassment program, which began in 1998, is an outstanding example of an outstanding example of an effective government response to environmental problems. This program, administered by the United States Department of Agriculture, Wildlife Services Division, has contributed mightily to a major resurgence in the lake\u27s game fish populations during the past three years. In the following article, USDA biologist Travis DeVault answers questions that often arise about the harassment program
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
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