104,917 research outputs found
Sanford Bates Correspondence from James H. Wallwork
No full textA letter addressed to Sanford Bates from James H. Wallwork in thanks for Bates' support
Haplacarus foliatus Wallwork 1962
No full text<i>Haplacarus foliatus</i> Wallwork, 1962 <p>Wallwork 1962: 466, figs. 6-11; Balogh and Balogh 1987: 343, pl. 29A; 2002a: 71; 2002b: pl. 126:1.</p> <p> Dimensions: deutonymph (n=3) 518 (480 – 540) x 280 µm, tritonymph (n=2) 660 x 290 – 330 µm. Sensillus with 7-8 branches in both instars. Measurements of setae: deutonymph: <i>c1</i> 65 – 70, <i>d1</i> 60 – 70, <i>e1</i> 70, <i>f1</i> 59 – 60, distance <i>c1-d1</i> 70 – 80, <i>d1-e1</i> 70; tritonymph: <i>c1</i> 80 – 85, <i>d1</i> 80, <i>e1</i> 80 – 85, <i>f1</i> 60 – 70, distance <i>c1-d1</i> 90, <i>e1-f1</i> 85 – 90 µm. Transverse band <i>s7</i> incomplete in all studied specimens.</p> <p> Remarks: The specimens from Bermuda correspond to the original description (Wallwork 1962) and are considered conspecific. The description by Wallwork (1962) is based on one adult and one tritonymph. <i>Haplacarus foliatus</i> is very similar to <i>H. javensis</i> Hammer, 1979. Main differences between the two species are: The notogastral setae are thicker in adults of <i>H. foliatus</i>, but more slender in <i>H. javensis</i> (this character could not be observed in the studied juvenile instars); notogastral setae <i>e1</i> are longer than <i>f 1</i> in <i>H. foliatus</i>; transverse band <i>s7</i> is incomplete in <i>H. foliatus</i>, but complete in <i>H. javensis</i>. A comparison with adults and tritonymphs of <i>H. javensis</i> from Belize and Cocos Island, Costa Rica (Schatz 1994b), was possible. <i>Haplacarus foliatus</i> is also morphologically similar to <i>H. bengalensis</i> Bhattacharya, Bhaduri et Raychaudhuri, 1974, but the latter species has shorter notogastral setae.</p> <p>Records from Bermuda: BE 230: 2 deutonymphs. BE 301: 1 deutonymph, 2 tritonymphs.</p> <p>General distribution: West Africa: Ghana, Pagalu Island (Annobón); India, Philippines, Thailand; first record for Bermuda.</p>Published as part of <i>Schatz, H. & Schuster, R., 2012, First Records Of Lohmanniidae (Acari: Oribatida) From The Bermuda Islands, pp. 247-257 in Acarologia 52 (3)</i> on page 249, DOI: 10.1051/acarologia/20122064, <a href="http://zenodo.org/record/5402933">http://zenodo.org/record/5402933</a>
Joshuella Wallwork 1972
No full textJoshuella Wallwork, 1972 Type species: Joshuella striata Wallwork, 1972 Diagnosis: Gymnodamaeidae with ventral plate having anogenital bridge (Fig. 23 arrow), but not lateral pits (Fig. 23); genital plates with smooth median margin and bearing 6 pairs of setae, seta g 2 inserted posteriad g 1; 2–3 pairs of adanal setae. Distal segments of legs without retrotecta, femur IV with 2 setae. Prodorsal cerotegument with spherical pustules, without raised ridges (Fig. 22 arrow); sensillus (bo) with long stalk and broad, barbed head; bothridial rim simple, bothridial ridge absent; spine-like interlamellar setae (in) on short apophysis between bothridia, directed dorsally; median prodorsal tubercle absent; exobothridial seta (ex) inserted anteriad in; prelamellar ridge poorly developed, without steep anterior margin; rostral seta (ro) inserted posteriad lamellar seta (le) which curves ventrad. Notogaster flattened, without posterior nipple, cerotegument forming a series of parallel longitudinal ridges (Fig. 22 arrow), and with large (mostly 3–5 in diameter) spherical (Fig. 25) or bullet-shaped pustules, 4 pairs of relatively short notogastral setae (h 1, p 1-3) (Fig. 24); sejugal tubercle absent.Published as part of Walter, David Evans, 2009, Genera of Gymnodamaeidae (Acari: Oribatida: Plateremaeoidea) of Canada, with notes on some nomenclatorial problems, pp. 23-44 in Zootaxa 2206 on page 35, DOI: 10.5281/zenodo.18974
Edwardzetes elongatus Wallwork 1966
No full textEdwardzetes elongatus Wallwork, 1966 (Figures 1–23) Measurements. Body length: 830–1029 (three specimens: one female and two males); notogastral width (without pteromorphs): 398–498 (three specimens). Integument. Body color light brown to dark brown. Body surface smooth, but prodorsum indistinctly punctate. Prodorsum. Rostrum widely rounded. Lamellae shorter than half of prodorsum. Lamellar cusps without teeth. Translamella absent. Rostral (ro, 90–102), lamellar (le, 151–164) and interlamellar (in, 176– 205) setae simple, slightly barbed. Bothridial setae (ss, 40–48) clavate, with short stalk (12–20) and oval, rounded distally, indistinctly barbed head (28). Tutoria (tu) sable-like, long, curving downward, pointed. Exobothridial setae (ex, 41) thin, slightly barbed. Notogaster. Anterior margin convex. Pteromorphs broadly rounded laterally. Dorsophragmata (D) of medium size, connected medially. Four pairs of oval porose areas present, with distinct borders: Aa (28–32 × 20–22) little larger than A1, A2 and A3 (16–24 × 12–16). Ten pairs of notogastral setae setiform, with short attenuate tips, thin, smooth; p 1 – p 3 (45–49) shorter than other seven pairs (65–69). Lyrifissures ia, im, ip, ih and ips distinct. Opisthonotal gland openings (gla) located laterally to A1. Gnathosoma. Subcapitulum longer than wide (233–246 × 172–180). Subcapitular setae setiform, slightly barbed; a (36–41) shorter than h and m (both 53–57). Adoral setae and their alveoli absent. Palps (147) with setation 0–2–1–3–9(+ω). Solenidion attached to eupathidium, both located on dorsal tubercle. Chelicerae (266–287) with two simple, barbed setae; cha (102–106) longer than chb (45–49). Trägårdh’s organ (Tg) long, tapered. Lateral podosomal and epimeral regions. Pedotecta I (Pd I) large, concave in dorsal view. Pedotecta II (Pd II) of medium size, triangular in ventral view. Both pedotecta scale-like in lateral view. Genal teeth (gt) elongate narrowly triangular. Apodemes 1, 2, sejugal and 3 distinctly developed, not fused medially. Epimeral setal formula 3–1–3–3. Epimeral setae setiform, thin, indistinctly or slightly barbed; setae 1b, 3b and 3c (61–73) longer than other (45–49). Custodia (cus) with long, thin, pointed tips. Discidia (dis) triangular. Circumpedal carinae (cp) distinct. Anogenital region. Six pairs of genital (g 1 – g 6), one pair of aggenital (ag), two pairs of anal (an 1, an 2) and three pairs of adanal (ad 1 – ad 3) setae similar in length (36–41), simple, thin, indistinctly barbed. Lyrifissures iad located close to anal aperture, in inverse apoanal position. Ovipositor elongated (274 × 62), blades (106) shorter than length of distal section (beyond middle fold; 168). Each of three blades with four straight, smooth setae, ψ 1 ≈ τ 1 (53–57) longer than ψ 2 ≈ τa ≈ τb ≈ τc (24–28). Six coronal simple setae (k, 14– 16) present. Legs. Medial claw smooth, clearly thicker than two laterals; claws serrate (ser) dorsally. Genua I and II, and femora II with large, triangular antero-ventral tooth (t). Formulae of leg setation and solenidia: I (1– 5–3–4–20) [1–2–2], II (1–5–3–4–16) [1–1–2], III (2–2–1–3–15) [1–1–0], IV (1–2–2–3–12) [0–1–0]; homology of setae and solenidia as indicated in Table 2. Solenidia setiform, thin, pointed. Famulus (ɛ) short, blunted. Setae (except p) slightly barbed. Remarks. The specimens of E. elongatus from Tasmania show general conformity with the original description (Wallwork 1966) from the South Georgia Islands. However, detailed comparison of the Tasmanian specimens with those from the Starý collection revealed differences in the following characters: 1) Setae l” on genua II. These setae in the Tasmanian specimens were simple, slightly thickened versus thorn-like in specimens from South Georgia Island. 2) Morphology of rostral, lamellar and anogenital setae. These setae in the Tasmanian specimens were slightly barbed versus distinctly barbed in specimens from South Georgia. In our opinion, the above listed differences are intraspecific and perhaps can be explained as population variation. Hence, this species of geographic variability could be seen in future identification of E. elongatus. Distribution. Earlier, E. elongatus was registered in the Antarctic Islands (South Georgia and South Sandwich Islands) and South Chile (Wallwork 1966, 1967; Starý & Block 1995). Taking our record, geographical distribution of this species has expanded and includes now the Australian region (Tasmania) (see Fig. 23).Published as part of Ermilov, Sergey G., Yurtaev, Andrey A. & Pešić, Vladimir, 2015, Additions to the Tasmanian oribatid mites, with supplementary description of Edwardzetes elongatus Wallwork, 1966 (Acari, Oribatida), pp. 98-108 in Ecologica Montenegrina 2 (2) on pages 104-106, DOI: 10.37828/em.2015.2.12, http://zenodo.org/record/803202
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Mapping of a gene for leaf scald resistance in barley line 'B87/14' and validation of microsatellite and RFLP markers for marker-assisted selection
No full textSeedlings of the barley line ‘B87/14’ were resistant to 22 out of 23 Australian isolates of Rhynchosporium secalis, the causal agent of leaf scald.‘B87/14’-based populations were developed to determine the location of the resistance locus. Scald resistance segregated as a single dominant trait in BC1F2 and BC1F3 populations. Bulked segregant analysis identified amplified fragment length polymorphisms (AFLPs) with close linkage to the resistance locus. Fully mapped populations not segregating for scald resistance located these AFLP markers on chromosome 3H, possibly within the complex Rrs1 scald locus. Microsatellite and restriction fragment length polymorphism markers adjacent to the AFLP markers were identified and validated for their linkage to scald resistance in a second segregating population, with the closest marker 2.2 cM from the resistance locus. These markers can be used for selection of the Rrs.B87 scald-resistance locus, and other genes at the chromosome 3H Rrs1 locus.Williams, K. ; Bogacki, P. ; Scott, L. ; Karakousis, A. ; Wallwork, H
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Contribution of Information and Communication Technology (ICT) in Country’S H-Index
No full textThe aim of this study is to examine the effect of Information and Communication Technology (ICT) development on country’s scientific ranking as measured by H-index. Moreover, this study applies ICT development sub-indices including ICT Use, ICT Access and ICT skill to find the distinct effect of these sub-indices on country’s H-index. To this purpose, required data for the panel of 14 Middle East countries over the period 1995 to 2009 is collected. Findings of the current study show that ICT development increases the H-index of the sample countries. The results also indicate that ICT Use and ICT Skill sub-indices positively contribute to higher H-index but the effect of ICT access on country’s H-index is not clear
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