1,721,066 research outputs found
Additional evidence for recent reproductive activity in an aged St. Lawrence Beluga (Delphinapterus leucas): a reply to Martineau
No full textPT: J; CR: BELAND P, 1988, J CONS INT EXPLOR ME, V45, P22 BELAND P, 1992, TOXICOLOGY PATHOLOGY BELAND P, 1995, REPORT UNPUB PREPARE BELAND PS, 1996, UNPUB MORTALITES BEL BRAHAM HW, 1984, REPROD WHALES DOLPHI, P81 BRAMLEY AJ, 1991, FLEMISH VET J S1, V62, P3 BRODIE PF, 1969, AM MIDL NAT, V82, P312 BRODIE PF, 1971, J FISH RES BOARD CAN, V28, P1309 BURNS JJ, 1988, OCSEAP FINAL REPORTS, V56, P221 GLADDEN JGB, 1999, MAR MAMMAL SCI, V15, P556 MARSH H, 1984, REPROD WHALES DOLPHI, P311 MARSH H, 1986, REP INT WHAL COMM, V8, P57 MARTINEAU D, 2001, MARINE MAMMAL SCI, V16, P219 MCALPINE D, 1999, MAR MAMMAL SCI, V15, P854 MCALPINE DF, 1999, MAR MAMMAL SCI, V15, P906 MCENTEE K, 1990, REPROD PATHOLOGY DOM PERRIN WF, 1984, REP INT WHALING COMM, V6, P1 REEVES RR, 1980, CAN FIELD NAT, V94, P239 SERGEANT DE, 1986, NATURALISTE CAN REV, V113, P61; NR: 19; TC: 0; J9: MAR MAMMAL SCI; PG: 5; GA: 383MLSource type: Electronic(1
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
Zaleinae D. McAlpine 1985
No full textKey to genera of Zaleinae 1 Postfrons without setulae between anterior ocellus and anterior margin; distal section of subcosta (beyond humeral crossvein) well sclerotized on c. middle third, obsolete and unpigmented on c. distal third, and much weakened towards base; first basal cell not separated from second basal cell by any sclerotized vein;?: only one pair of surstyli present;!: abdominal tergite 7 without anterior apodeme (! unknown in S. ismayi)................................................................................. Suffomyia —— Postfrons with several setulae on central anterior part; distal section of subcosta almost uniformly sclerotized from humeral crossvein to termination at subcostal break of costa; first and second basal cells almost or completely separated by a sclerotized vein;?: two pairs of surstyli present;!: abdominal tergite 7 with median, posteriorly forked apodeme attached to its anterior margin (Figs 56, 71–74, not yet investigated for Z. wisei etc.)........................................................... ZaleaPublished as part of McAlpine, D. K., 2007, The Surge Flies (Diptera: Canacidae: Zaleinae) of Australasia and Notes on Tethinid-Canacid Morphology and Relationships, pp. 27-64 in Records of the Australian Museum 59 (1) on page 4
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
GABAergic inhibition controls neural gain in inferior colliculus neurons sensitive to interaural time differences
No full textWe investigated the role of GABAergic inhibition on the responses of inferior colliculus (IC) neurons sensitive to interaural time differences (ITDs) in anesthetized guinea pigs. Responses to static and dynamic ITDs were obtained before, during, and after recovery from ionotophoretic application of GABA, or antagonists to the GABA(A) receptor gabazine and bicuculline. For most neurons, a linear relationship was observed between discharge rates evoked by a particular ITD during drug application and control discharge rates. Blocking GABAergic inhibition, or adding exogenous GABA, scaled IC discharge rates in a multiplicative (divisive) and/or additive (subtractive) manner. When the influence of iontophoresed GABA antagonists or exogenous GABA on discharge rates was accounted for, GABAergic inhibition was found to have no effect on the ITD tuning properties of IC neurons. The tuning sharpness of ITD functions, the ITD that evoked 50% response magnitude, and the relative symmetry of ITD functions around their peak response were unaffected by blockade of inhibition or addition of tonic inhibition. However, the ability of neurons to discriminate between ITDs by virtue of differences in their discharge rate was altered by blocking or adding GABA. We propose that inhibition in the IC is involved in the control of the neural gain of the output of IC neurons rather than the regulation of ITD tuning. This gain control appears to arise from a combination of additive and multiplicative processes, and may involve mechanisms such as shunting inhibition or changes in the efficacy of inhibitory and excitatory inputs
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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