50,725 research outputs found
Cydistomyia kamialiensis Goodwin
No full text<i>Cydistomyia kamialiensis</i> Goodwin (Figure 5 A-5C) <p> <b>Discussion</b>. As mentioned earlier, this species was described by Goodwin (1999). The holotype and paratypes were deposited in the Florida State Collection of Arthropods (FSCA), but accession numbers were not mentioned in the manuscript. These numbers are as follows: holotype, D1462; paratypes, D1463 and D1464. The species was illustrated when described, but additional figures of the holotype are provided herein.</p>Published as part of <i>Goodwin, James T., 2010, New species of Cydistomyia Taylor with notes and collection records for other Tabanidae (Diptera) from New Guinea, pp. 1-22 in Insecta Mundi 2010 (117)</i> on page 10, DOI: <a href="http://zenodo.org/record/4531547">10.5281/zenodo.4531547</a>
‘The Philosophy of Utopia [ed B. Goodwin]
No full textA review essay of ‘The Philosophy of Utopia’ ed B. Goodwin.</p
‘The Philosophy of Utopia [ed B. Goodwin]
No full textA review essay of ‘The Philosophy of Utopia’ ed B. Goodwin.</p
Study of the decay mechanism for B+ -> p(p)over-barK(+) and B+ -> p(p)over-bar pi(+)
No full textWe study the characteristics of the low mass p (p) over bar enhancements near threshold in the three-body decays B+ -> p (p) over barK(+) and B+ -> p (p) over bar pi(+). We observe that the proton polar angle distributions in the p (p) over bar helicity frame in the two decays have the opposite polarity, and measure the forward-backward asymmetries as a function of the p mass for the p (p) over barK(+) mode. We also search for the intermediate two-body decays, B+ -> (p) over bar Delta(++) and B+ -> p (Delta) over bar (0), and set upper limits on their branching fractions. These results are obtained from a 414 fb(-1) data sample that contains 449 x 10(6) B (B) over bar events collected near the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. (c) 2007 Elsevier B.V. All rights reserved.IPE
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
Different types of one-variable Goodwin model.
No full text<p>A. Goodwin model with regular timescale. B. Goodwin oscillator with explicit time delay. C. The fractional delay Goodwin oscillator described by Eq. (17). The silent interval hinders the product to trigger the reinitiation of gene transcription and hence the time span of the silent interval is equal to the delay time.</p
Clathria (Clathria) stromnessa Goodwin & Brickle 2012, sp. nov.
No full text<i>Clathria (Clathria) stromnessa</i> sp. nov. <p>(Figure 6)</p> <p> Type material: <b>Holotype:</b> BELUM Mc 7690. Sample in 95% ethanol, tissue section and spicule preparation on slides; Green Island, Stromness, Site 2, South Georgia (54°09.381’S, 36° 39.852’W); depth 17.4m; collected by C. Goodwin, J. Brown, and S. Brown, 28 th November 2010.</p> <p> <b>Paratype:</b> BELUM Mc 7674. Sample in 95% ethanol, tissue section and spicule preparation on slides, Green Island, Stromness, Site 1, South Georgia (54°09.448’S, 36° 39.752’W); depth 17.4m; collected by C. Goodwin, P. Brickle and S. Cartwright, 27 th November 2010.</p> <p> <i>Etymology:</i> Named after the type locality, Stromness, South Georgia</p> <p> External morphology: <i>In situ appearance:</i> Lobed massive (type specimen maximum diameter 20cm) rust orange sponge with large oscules on top of lobes (Fig. 6a).</p> <p> <b>Preserved appearance:</b> Grey, firm, with a slightly hispid surface.</p> <p> <i>Skeleton:</i> The choanosomal skeleton is an irregular reticulation of bundles of 4–6 smooth styles (Fig. 6b), there is no differentiation between axial and extra-axial regions. The ectosome is formed of brushes of styles. Toxa and chelae microscleres are present throughout the tissue.</p> <p> <i>Spicules:</i> Measurements from Mc7690.</p> <p> <b>Choanosomal styles:</b> 424(495)563 by 17(26)31µm. Fat smooth styles, the majority are gently curved (Fig. 6c). <b>Ectosomal styles:</b> 232(292)414 by 3(6)7µm. Thin styles, the heads are microspined, bearing several short blunt spines (Fig. 6d, e).</p> <p> <b>Chelae:</b> 10(12)14µm. Typical clathriid palmate isochelae (Fig. 6f).</p> <p> <b>Toxa:</b> 45(150)477µm, thin smooth toxas, very wide ranging in size. Some of the smallest have a pronounced central flexion and upturned points (Fig. 6g).</p> <p> <i>Remarks:</i> We have assigned this species to <i>Clathria (Clathria)</i> rather than one of the other seven sub-genera on the basis of the lack of differentiation between the axial and extra-axial regions of the choanosome and the presence of a reticulate skeleton and only a single category of auxillary style (Hooper 2002). This species is unusual in not possessing any echinating acanthostyles, however these can be secondarily lost in this subgenus (Hooper 2002). The subgenus <i>Clathria (Isociella)</i> lacks echinating acanthostyles but has a regular renieroid reticulate skeleton with plumose multispicular tracts connected by paucispicular ones (Hooper 2002), whereas the skeleton of our species is irregularly reticulate. From the South Atlantic and Antarctic <i>C. papillosa</i> Thiele, 1905 and <i>C. paucispicula</i> (Burton, 1932) are the only species in <i>Clathria (Clathria),</i> which do not possess any echinating spicules. However, the former has strongylote ectosomal spicules and bipocoelles and should probably be reassigned to <i>Iophon</i>, and the latter lacks any microscleres. The large size of the toxa is also unusual; <i>C. toxipraedita</i> Topsent, 1913 (type locality Burdwood Bank to the south of Falkland Islands and north west of South Georgia) has toxa up to 1750µm but possesses echinating acanthostyles.</p>Published as part of <i>Goodwin, Claire & Brickle, Paul, 2012, Sponge biodiversity of South Georgia island with descriptions of fifteen new species, pp. 1-48 in Zootaxa 3542</i> on page 1
Clathria (Clathria) priestleyae Goodwin & Berman & Hendry 2019, sp. nov.
No full text<i>Clathria</i> (<i>Clathria</i>) <i>priestleyae</i> sp. nov. <p>(Figure 14)</p> <p>lsid:zoobank.org:act: 7FE528FB-040A-4C14-9A73-A4695DF0E64B</p> <p> <b>Specimens.</b> <i>Holotype: BELUM. Mc 2015.638</i> Rocks near San Martin Islands (65°41.297’S, 65° 20.091’W), depth 6–21 m; collected by C. Goodwin and E. Priestley, 17/02/2015.</p> <p> <i>Paratypes</i>: BELUM. Mc 2015.692, BELUM.Mc2015.703 and BELUM. Mc 2015.713 Vieugue Island (65°38.758’S, 65° 12.540’W), depth 10–22 m; collected by C. Goodwin and E. Priestley, 23/02/2015; BELUM. Mc 2015.721 Port Charcot, Booth Island (65°03.853’S, 64° 01.868’W), depth 6–16 m; collected by C. Goodwin and E. Priestley, 23/02/2015. BELUM. Mc 2015.758 Paradise Bay Wall (64°53.841’S, 62° 52.391’W), depth 14–21 m; collected by C. Goodwin and E. Priestley, 24/02/2015.and BELUM. Mc 2015.775 Paradise Bay Wall (64°53.841’S, 62° 52.391’W), depth 10–24 m; collected by C. Goodwin and E. Priestley, 25/02/2015.</p> <p> <b>Comparative material examined.</b> <i>Clathria pauper</i> Brondstedt, 1927. BMNH 30.11.5.2a (tissue section and spicule preparation). Labelled ‘N of Discovery Islet from type’.</p> <p> <b>Etymology.</b> Named after Emily Priestley who was an invaluable member of the expedition dive team.</p> <p> <b>External morphology.</b> <i>In situ appearance</i> (Figure 14A): Pale yellow encrusting sponge forming patches of variable size (5–> 20 cm) on bedrock. Surface covered with spiky projections up to 2 cm in length, these are sometimes branched. The projections are cored by fibres of spicules which are visible through the projection as a central core.</p> <p> <i>Preserved appearance.</i> Fairly soft brown basal cushion with projecting, tapering spikes, up to 1 cm in length. Surface velvety, finely hispid.</p> <p> <b>Skeleton</b> (Figure 14B): In the basal cushion the choanosomal skeleton is an irregular plumo-reticulation of thick ascending fibres of primary styles (up to 20 spicules thick) which are echinated by the acanthostyles, joined by thinner secondary tracts cored by 2–3 primary styles. In the spiky surface projections, a thick ascending fibre of principal styles (up to 20 spicules thick) cores the centre of the projection. Thinner fibres of 2–3 principal styles, heavily echinated by acanthostyles, lead up to the surface at 45° angle to the central fibre. Brushes of sub-ectosomal styles join these at the surface. Microscleres are scattered throughout the tissue.</p> <p> <b>Spicules:</b> Measurements from BELUM.Mc2015.638.</p> <p>Principal styles (Figure 14C): 430(802)1105 by 14(19) 25 µm. Large smooth styles which are often slightly curved.</p> <p>Subectosomal styles (Figure 14D, E): 297(375)440 by 7(9) 11 µm. Tylote head which is spined with a few large spines.</p> <p>Acanthostyles (Figure 14F): 121(146)168 by 8(11) 21 µm. Entirely spined with fairly large spines.</p> <p>Thin toxas (Figure 14G): 154(176) 213 µm.</p> <p>Oxhorn toxas (Figure 14H): 54(69) 103 µm.</p> <p> <b>Remarks.</b> We have assigned this species to <i>Clathria</i> (<i>Clathria</i>) rather than one of the other seven subgenera on the basis of the lack of differentiation between the axial and extra-axial regions of the choanosome and the presence of a reticulate skeleton, and only a single category of auxillary styles (Hooper 2002b). Although the species has an appearance similar to <i>C.</i> (<i>Axosuberites</i>) <i>rosita</i> Goodwin, Brewin & Brickle, 2012 this subgenus has a distinctive extra-axial skeleton and lacks echinating megascleres (Hooper, 2002b). Of the 29 species present in the Antarctic and adjacent regions only two, <i>C.</i> (<i>C.</i>) <i>lissosclera</i> Bergquist & Fromont, 1988 and <i>C.</i> (<i>C.</i>) <i>pauper</i> Brøndsted, 1927, possess two distinct categories of toxa.</p> <p> <i>Clathria lissosclera</i> can be distinguished as its megascleres are much smaller (choanosomal styles 170–190 µm and echinating acanthostyles 85–110 µm). <i>Clathria pauper</i> was originally described as having no microscleres (hence the name). Brøndsted (1927) describes basally spined acanthostyles up to 650 by 20 µm, as well as entirely spined acanthostyles up to 250 by 12 µm, and no microscleres. Hooper (1996) re-examined a fragment of the holotype (BMNH1930.11.5.2) and noted that toxas were in fact present. He gives the spicule dimensions as: principal styles with rounded smooth or microspined bases 372(606)810 by 11(15.8) 21 µm; Subectosomal styles 352(481)590 by 3(7.6) 10 µm; Echinating acanthostyles, subtylote with heavily spined base and lighter spined shaft 219(293)384 by 10(12.3) 15 µm; smaller evenly spined acanthostyles 92(148)183 by 5(8.4) 11 µm; Accolada toxas 93(139.5)185 by 0.8(0.9) 1.5 µm; wing-shaped toxas 31(45.5)52 by 1.5(1.7)2.0 µm). Our re-measurements of the type specimen agree with these. Our specimen differs from <i>C. pauper</i> in only having one category of evenly spined echinating acanthostyles, larger oxhorn toxas, and much longer principal styles.</p> <p> <b>Distribution.</b> Currently only known from the type and holotype localities.</p>Published as part of <i>Goodwin, Claire E., Berman, Jade & Hendry, Katharine R., 2019, Demosponges from the sublittoral and shallow-circalittoral (<24 m depth) Antarctic Peninsula with a description of four new species and notes on in situ identification characteristics, pp. 461-508 in Zootaxa 4658 (3)</i> on pages 487-488, DOI: 10.11646/zootaxa.4658.3.3, <a href="http://zenodo.org/record/3376028">http://zenodo.org/record/3376028</a>
ARE THERE GOODWIN EMPLOYMENT-DISTRIBUTION CYCLES? THEORETICAL AND EMPIRICAL EVIDENCE
No full textmodelo predador-presa, comportamiento dinámico no lineal, ciclos de demanda
Responses of stabled horses choosing between multiple and single forage locations
No full textEquine stabling commonly restricts horses’ location and diet selection, with associated physiological and behavioural health consequences. To investigate foraging location choices, in four replicated trials, ten to twelve horses were introduced for five minutes into each of two matching stables containing a single forage or six forages. The horses were then removed and released in the gangway between the stables and allowed five minutes to choose between them. Initial choice, final choice, mean duration in each location and proportional frequency of change of location were compared. The majority of horses initially entered the closest stable on release (P<0.05). If the closest stable contained a single hay the majority transferred to the multiple forage stable (P<0.001). Durations within stables suggest a preference for multiple forages in multiple locations (P<0.001). Eleven individuals swapped stables on one or multiple occasions during trials when hay or a preferred forage was available in both stables. This could indicate motivation to move between foraging locations irrespective of forage palatability and preference. Further study is required to determine whether these effects persist with larger sample sizes over longer periods. However, these preliminary trials suggest that motivation to move between foraging locations may persist in stabled horses
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