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FIGURE 3. Grylloblatta newberryensis n in Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953
No full textFIGURE 3. Grylloblatta newberryensis n. sp. A, female, lateral view of ovipositor and cercus showing the dorsal valvula (dv); B, male, lateral view of right gonocoxa (gcx-r) and right gonostylus (gst-r); C, male, anterodorsal view of primary copulatory sclerite (pcs); D, male, anterior view of primary copulatory sclerite and secondary accessory sclerite (sas); E, male, anterodorsal view, detail of secondary accessory sclerite.Published as part of Marshall, Christopher J. & Lytle, David A., 2015, Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953, pp. 408-418 in Zootaxa 3949 (3) on page 415, DOI: 10.11646/zootaxa.3949.3.6, http://zenodo.org/record/23460
FIGURE 2. Grylloblatta chintimini n in Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953
No full textFIGURE 2. Grylloblatta chintimini n. sp. A, female, lateral view of ovipositor and cercus showing the dorsal valvula (dv); B, male, lateral view of right gonocoxa (gcx-r) and right gonostylus (gst-r), showing distinct notch anterior of dorsal finger (arrow); C, male, lateral view of left gonocoxa (gcx-l) and left gonostylus (gst-l); D, male, anterior view of primary copulatory sclerite (pcs), showing posterior face lacking prominent dorsal flange (arrow); E, male, anterodorsal view of primary copulatory sclerite and secondary accessory sclerite (sas); F, male, anterodorsal view, detail of distinctly-quadrate secondary accessory sclerite.Published as part of Marshall, Christopher J. & Lytle, David A., 2015, Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953, pp. 408-418 in Zootaxa 3949 (3) on page 413, DOI: 10.11646/zootaxa.3949.3.6, http://zenodo.org/record/23460
FIGURE 1. Grylloblatta rothi. A in Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953
No full textFIGURE 1. Grylloblatta rothi. A, female, lateral view of ovipositor and cercus showing the dorsal valvula (dv); B, male, lateral view of right gonocoxa (gcx-r) and right gonostylus (gst-r); C, male, lateral view of left gonocoxa (gcx-l) and left gonostylus (gst-l); D, male, anterodorsal view showing details of secondary accessory sclerite (sas); E, male, anterodorsal view of primary copulatory sclerite (pcs) and secondary accessory sclerite, with dorsolateral lobe of main phallic sclerite visible (dll); F, male, anterior view of primary copulatory sclerite, showing expanded apical-dorsal flange (arrow).Published as part of Marshall, Christopher J. & Lytle, David A., 2015, Two new species of Grylloblatta Walker, 1914 (Grylloblattodea: Grylloblattidae) from western North America, and a neotype designation for G. rothi Gurney 1953, pp. 408-418 in Zootaxa 3949 (3) on page 411, DOI: 10.11646/zootaxa.3949.3.6, http://zenodo.org/record/23460
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
Appropriate 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
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Flow Homogenization and Beaver Activity Interact to Degrade Aquatic Invertebrate Community Structure
Get PDFFlow homogenization, the removal of natural flow events such as floods and droughts, can be detrimental to the functioning of riverine habitats. In rivers with beaver (Castor canadensis), flow homogenization can facilitate unchecked beaver dam construction due to lack of dam removal from floods, leading to physical effects such as channel widening and deepening. In this study, I investigated the consequences of a 6-year period of flow homogenization on the aquatic invertebrate communities of the Bill Williams River in the Sonoran Desert of the United States. I found that the aquatic invertebrates of this community shifted in composition and structure, and that flow homogenization did not adversely affect diversity measures such as species richness. However, the proportion of aerial dispersers, which are an important food subsidy for riparian and terrestrial consumers, decreased with increasing water depth associated with flow homogenization and beaver activity. These compositional shifts can have negative effects for how ecosystems function, and managers of threatened and endangered riparian species should consider potential changes in invertebrate food supply due to river management policies. I present a conceptual model to illustrate how the interactive effects of flow homogenization and beaver activity can be quantified and monitored
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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