7,685 research outputs found

    Evaluating recent taxonomic changes for alligator snapping turtles (Testudines: Chelydridae)

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    Folt, Brian, Guyer, Craig (2015): Evaluating recent taxonomic changes for alligator snapping turtles (Testudines: Chelydridae). Zootaxa 3947 (3): 447-450, DOI: 10.11646/zootaxa.3947.3.1

    Author Interview with Brian D. Anderson

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    Brian D. Anderson was our feature artist of the week, October 19th - 23rd, 2020.https://jagworks.southalabama.edu/vid_presentations/1010/thumbnail.jp

    Macrochelys

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    Macrochelys phylogenetics Geographic variation in Macrochelys morphology has been described among populations (e.g., number of supramarginal scutes, skull shape; Pritchard 1989), but populations have historically been treated as comprising a single, wide-ranging species. However, because other highly aquatic organisms in Gulf Coastal drainages exhibit patterns of drainage-specific endemism (e.g., Graptemys; Ennen et al. 2010), two studies in the last 16 years have explored population genetic structure of Macrochelys and systematic implications of that structure. Roman et al. (1999; hereafter ‘Roman et al.’) sequenced two partial genes of the mitochondrial genome (tRNA PRO, 5 ’ end of the control region) and found populations to exhibit drainage-specific haplotypes; a gene tree generated from these data recovered three major clades of Macrochelys temminckii (sensu lato): a western clade including populations from the Trinity River to the drainages of Pensacola Bay, a central clade from the Choctawhatchee River to the Ochlockonee River, and an eastern clade restricted to the Suwannee River. In this hypothesis, the Eastern (Suwannee) population (hereafter referred to as the Eastern (Suwannee) assemblage, for consistency with literature) was basal and sister to a well-supported monophyletic group comprising populations from the central and western distribution (hereafter, central and western assemblages, respectively). However, because mtDNA is maternally inherited and fails to detect male-mediated dispersal, Echelle et al. (2010; hereafter Echelle et al.) analyzed microsatellites from the nuclear genome to further test for population genetic structure, compare phylogeographic patterns between nuclear and mtDNA, and test for past population bottlenecks. Comparison of a neighbor-joining tree summarizing microsatellite variation (F ST values) and a parsimony tree summarizing mtDNA haplotypes presented generally similar relationships, except for the drainages of Pensacola Bay, which were described by microsatellite data as being so deeply divergent as to question their membership in either the central or western clades of Roman et al. Both Roman et al. and Echelle et al. suggested low dispersal among drainages, high population structure among drainages, and potential for cryptic species within Macrochelys, but, in the absence of a thorough morphological investigation and because of nuclear-mitochondrial discordance, no taxonomic changes were made.Published as part of Folt, Brian & Guyer, Craig, 2015, Evaluating recent taxonomic changes for alligator snapping turtles (Testudines: Chelydridae), pp. 447-450 in Zootaxa 3947 (3) on page 447, DOI: 10.11646/zootaxa.3947.3.11, http://zenodo.org/record/24375

    Competition policy. by Brian Ellis

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    tag=1 data=Competition policy. by Brian Ellis tag=2 data=Ellis, Brian tag=3 data=Australian Rationalist, tag=5 data=46 tag=6 data=Autumn/Winter 1998 tag=7 data=51-56. tag=8 data=ECONOMIC CONDITIONS tag=9 data=COMPETITION%CORPORATISATION%NATIONAL COMPETITION POLICY%PRIVATE SECTOR PUBLIC SECTOR EFFECTIVENESS%SERVICE DELIVERY%SOCIAL POLICY%INNOVATION tag=10 data=Examines the Government's National Competition Policy in relation to encouraging R&D, and the corporisation of public services and utilites. The author is Emeritus Professor of Philosophy at La Trobe UNiversity and Vice-President of the Rationalist Society of Australia. Article Taken from What's New. tag=13 data=CABExamines the Government's National Competition Policy in relation to encouraging R&D, and the corporisation of public services and utilites. The author is Emeritus Professor of Philosophy at La Trobe UNiversity and Vice-President of the Rationalist Society of Australia. Article Taken from What's New

    Art Behind Gaming: Brian D. Anderson

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    A discussion with author Brian D. Anderson about worldbuilding in fantasy. Part of the Art Behind Gaming Online Con.https://jagworks.southalabama.edu/vid_presentations/1046/thumbnail.jp

    In Honour of Brian MacWhinney: A Personal Account

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    While this volume and the writings have made it amply clear what significant contributions Professor Brian MacWhinney has made to the field at large, in this afterword, we begin with a senior member of our author team (Ping Li, PL) followed by a mid-career member (Helen Zhao, HZ) and an early career member (Zhe Gao, ZG), to provide our personal accounts of Brian not only as a leading scholar but also as a role model who touches and changes people’s lives

    FIGURE 2 in Patterns of head shape and scutellation in Drymarchon couperi (Squamata: Colubridae) reveal a single species

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    FIGURE 2. Bivariate plot of head height on head length. Values from Atlantic lineage indicated by solid circles and solid line; values from Gulf Coast lineage indicated by open circles and dashed line.Published as part of Guyer, Craig, Folt, Brian, Hoffman, Michelle, Stevenson, Dirk, Goetz, Scott M., Miller, Melissa A. & Godwin, James C., 2019, Patterns of head shape and scutellation in Drymarchon couperi (Squamata: Colubridae) reveal a single species, pp. 168-174 in Zootaxa 4695 (2) on page 171, DOI: 10.11646/zootaxa.4695.2.6, http://zenodo.org/record/399867

    Interview with Brian Alleyne, Sociologist Studying KDE

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    A few months ago, the British journal Sociology published an article titled "Challenging Code: A Sociological Reading of the KDE Free Software Project". Eager to find out what a 'sociological reading' of KDE entails, Dot editor Oriol Mirosa rushed to contact the article's author, sociologist Brian Alleyne, who graciously and patiently agreed to be the subject of an interview

    Understanding Author Rights

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    Author Rights is the term used to describe a researcher\u27s rights related to their published work. In this session, Brian Young will: 1) provide an overview of author rights, 2) explain language often used in the publication agreement, and 3) demonstrate a tool (Sherpa Romeo) that can be used to quickly understand what default rights you have (and lose) when you publish with a specific journal

    Shady trading on the rights market. by Brian Pollard

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    tag=1 data=Shady trading on the rights market. by Brian Pollard tag=2 data=Pollard, Brian tag=3 data=New Doctor, tag=6 data=Winter 1995 tag=7 data=11-12. tag=8 data=EUTHANASIA tag=10 data=Because the spotlight of public attention has been strongly focused on doctors in this debate, the author believes that it is essential that every doctor makes a clear distinction between his or her private views on the practice of euthanasia and its legislation, because the implications in each case are simply not comparable. tag=11 data=1995/1/5 tag=12 data=95/0224 tag=13 data=CABBecause the spotlight of public attention has been strongly focused on doctors in this debate, the author believes that it is essential that every doctor makes a clear distinction between his or her private views on the practice of euthanasia and its legislation, because the implications in each case are simply not comparable
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