15,636 research outputs found
[Letter from Alex Bradford to Lieutenant and Mrs. Ray Starner - November 4, 1940]
No full textLetter from Alex Bradford to Lieutenant and Mrs. Ray Starner describing the the current state of affairs that the author was experiencing, including: the London blitz, the moral of the troops on the ground, and the collective company of men opposing the Nazi regime
Hodgson, Fred, 1886-1930
No full textBiographical information for Fred Hodgson. Includes photos of Ray B. West Building, USU campus, Logan; Carnegie Library, Smithfield; Milton R. Merrill Library, USU campus, Logan; First Presbyterian Church, Logan
Discochiton browni Hodgson, spec. n.
No full textDiscochiton browni Hodgson spec. n. (Fig. 3) Material examined. Holotype adult female: SOLOMON ISLANDS: left label: SOLOMON IS. / Guadalcanal, Kukum / on coconut / E.S. Brown / 9.vii.56 5453 / CIE 4211/14908; right label: Paralecanium / nr. expansum / quadratum / Green [all crossed out] / D.J. Williams; middle label: Discochiton browni / Hodgson / Holotype (BMNH): 1/1 young adf (g). Paratype ff: Solomon Islands: left label: Solomon Is / Kukum / on coconut / coll. E.S. Brown / 4619 14.ii.56 / CIE 3900/14669; right label: Paralecanium / nr. expansum / quadratum / Green [all crossed out] / D.J. Williams; middle label: Discochiton browni / Hodgson / Paratype f (BMNH): 1/1adf (missing venter). Paratype ff: Solomon Islands: left label: Solomon Is / Guadalcanal / on coconut / coll. E.S. Brown / 532(c) vii.54 / CIE 3176/13920; right label: Paralecanium / nr. expansum / quadratum / Green [all crossed out] / D.J. Williams; middle label: Discochiton browni / Hodgson / Paratype ff (BMNH): 6/8adff (mainly g, but some with no venter). Also: left label: Solomon Is. / Guadalcanal / Mt. Austin / on coconut / xii.1983 No. 10 / R. Macfarlane / no. T.169 / CIEA16935; right label: Paralecanium [crossed out] / Discochiton / browni / Hodgson / paratype f (BMNH): 1/1adf (fg). Also: left label: Solomon Is. / Lunga / on coconut coll. E.S. Brown / 8.vii.1956 #5474 / CIE4374/14963; right label: Paralecanium [crossed out]/ nr. expansum [crossed out]/ quadratum [crossed out] / Green [crossed out] / paratype f; middle narrow label: Discochiton / browni / Hodgson (BMNH): 1/1adf (dorsum and venter separate). Also: left label: Solomon Is. / Tenaru / on coconut / E.S. Brown / #3849 24.x.1955 / CIE3591/14493; right label: Paralecanium [crossed out]/ nr. expansum [crossed out]/ quadratum Green [crossed out] / paratype f; middle narrow label: Discochiton / browni / Hodgson (BMNH): 1/1adf (f). Other material. SOLOMON ISLANDS, Guadalcanal, on Ficus sp., -. viii.1954, E.S. Brown #735 (BMNH): 1/1adf (p, missing venter). Guadalcanal, on sour-sop, 1.vii.1956, E.S. Brown #5434 (BMNH): 1/1adf (g). Kukum, on coconut, 14.ii.1956, E.S. Brown #4619 (BMNH): 1/1adf (p). Russell Is., Pepesala, on coconut, 6.ix.1955, E.S. Brown #3717 (BMNH): 2/2adff (fg). Russell Is., on orchid, 19.ix.1934, R.A. Lever #1942 (BMNH): 6/8adff (mainly p). Vella, Lavella, on Cocos sp., 31.v.1934, H.T. Pagden #1714 (BMNH): 2/2adff (p). Rua Vatu, on coconut, 10.xi.1955, E.S. Brown #4088 (BMNH): 4/4adff (p, no venter). Note. The following description is based on the type series. Slide-mounted material adult female. Body oval, broadest across abdomen. Length 4.0– 7.5 mm, width 3.0– 5.5 mm. Dorsum. Derm rather uniformly sclerotised but, on older well-stained specimens, with stronger sclerotisation medially and a pale, less sclerotised marginal area about 150 µm wide; submarginally with round to oval areolations in radial bands, these forming patterns more medially; derm with abundant minute pale spots; derm around anal plates often less sclerotised. Stigmatic rays present. Marginal radial lines obscure, indicated by lines of pores and setae, with 13 on head between anterior stigmatic clefts; each side with 5 between stigmatic clefts and 13 on abdomen. With mostly 4 pairs of abdominal clear areas plus another at inner end of anterior stigmatic ray. Dorsal setae each finely spinose to setose with a pointed apex, about 10 µm long with a strongly sclerotised basal socket; present throughout, including medially; many setae each situated on end of a long fleshy tube, each tube 5– 8 µm wide and up to 33 µm long, shortest near margin; tubes absent from some setae nearest margin (setae actually missing from many fleshy tubes—see Morphology of Paralecanium -group above); frequent in a polygonal pattern. Preopercular pores present, each pore strongly convex and about 3 µm wide, present as follows: CA1 with 6–15, CA2 with 7–16, CA3 with 14–19 and CA4 with 10–24 pores. Other dorsal pores of two types present: (i) larger pores, each small and about 4.5 µm wide, present in a sparse polygonal pattern throughout; also (ii) smaller pores, each in a unsclerotised spot about 1.5 µm wide, perhaps more randomly distributed. Anal plates rather small and elongate, together narrowly quadrate, with anterior margins slightly shorter than posterior margins and some specimens with a faint polygonal pattern on dorsal surface; each plate with 2 or 3 minute setae near posterior apex, plus 0 or 1 small pores medially; length of plates 2 50–285 µm, combined width 185–235 µm. Anogenital fold with 4–6 minute setae at each corner of anterior margin, each lateral margin with 1 at anterior end and another posteriorly. Margin. Margin slightly wavy, with short, shallow radial lines or ridges. Marginal setae broadly fan-shaped, clearly wider than long; width of each fan about 40–50 µm, length about 20 µm; with about 130–145 setae anteriorly on head between anterior stigmatic clefts, each side with 40–55 between stigmatic clefts and 88–135 on abdomen. Stigmatic clefts quite deep, with a narrow entrance, each with a deep, sclerotised inner margin, each margin with a saw-like edge and surface of sclerotised inner margin covered with sclerotised nodules (could be spiracular disc-pores); each cleft with 3 stigmatic spines, each parallel-sided with a blunt apex and subequal in length, 25–36 µm long. Eyespots each in a clear socket about 160 µm wide; diameter of each lens about 30 µm. Venter. Derm membranous, with a narrow, poorly sclerotised marginal band about 50 µm wide. Multilocular disc-pores frequent on either side of genital opening and on preceding segment only, each side with 31–54 on abdominal segment VII and 30–50 on segment VI. Spiracular disc-pores in a broad band 4+ pores wide between margin and each spiracle, with 28–52+ pores in each anterior band and 25–60 in each posterior band, latter always without pores in middle part of band. Ventral microducts minute, present in a rather dense group just posterior to and on either side of labium, sparse elsewhere. Ventral setae: with 1–3 pairs of setae between antennae; with pairs of long pregenital setae on segments VII–V (those on VII each 66–85 µm long); with a group of 3–9 setae laterad to anterior end of anal cleft; small setae frequent medially just anterior to vulva in abdominal segment VII, otherwise very sparse; and submarginal setae sparse and extremely short. Antennae reduced, each with 3–5 segments (divisions between many segments obscure or absent); total length 153–185 µm; hair-like setae absent from fused apical segments. Clypeolabral shield 130–145 µm long. Spiracles: width of each peritreme 48–60 µm. Legs reduced to very small stubs. Comments. Discochiton browni spec. n. differs from all other known Discochiton species in that the adult females have the following, so far unique, combination of characters: (i) each stigmatic cleft with a sclerotised, saw-like margin and basal sclerotisation with numerous nodule-like structures, (ii) spiracular disc-pores in broad bands 4+ pores wide, (iii) multilocular disc-pores only present on abdominal segments VII and VI (usually VII–V), (iv) dorsal setae each finely spinose or setose, (v) leg stubs present, and (vi) preopercular pores associated with all abdominal clear areas. Judging from the number of times this species has been collected in the Solomon Islands, it appears to be widespread and quite common. Discochiton browni is currently restricted to the Solomon Islands. Host-plants. Cocos nucifera (Arecaceae); Ficus sp. (Moraceae); Annona squamosa (Annonaceae); Orchidaceae. Name derivation. This species is named in honour of E.S. Brown, who collected most of the specimens. E.S. Brown was the British Colonial Entomologist who belonged to a team going wherever there was an outbreak of any insect causing concern. He was an avid collector and always collected scale insects on any trip. He died quite young, of cancer.Published as part of Chris J. Hodgson & Douglas J. Williams, 2018, Revision of the soft scale genus Paralecanium (Hemiptera: Coccomorpha: Coccidae) with the introduction of three new genera and twenty new species, pp. 1-162 in Zootaxa 4443 (1) on pages 18-20, DOI: 10.11646/zootaxa.4443.1.1, http://zenodo.org/record/130562
Japan as institutional counterfactual: knowledge, learning and power
No full textHodgson and Carter present a volume that contributes to the ongoing debate in Knowledge Management. They develop themes explored in Roy Jacques' influential text, Manufacturing the Employee, as a starting point the authors consider the status of contemporary management knowledge. They do this from a range of theoretical positions that draw key implications for both research and teaching. The volume hosts an array of eminent scholars in the field. The collection explores, and at times takes issue with, the increasing influence of post-structuralist thought on our understanding of the nature of management knowledge, and draws key implications for both research and teaching. The various chapters consider the nature of management knowledge from perspectives as diverse as management history, discourse analysis, gender, post-structuralism, social construction, neo-institutionalism, and critical realism
The student's guide to completing an author study
No full textThe 'Student's guide to completing an author study' emerged during the early development of the school library resource center program at Glen Stewart Elementary School in Stratford Canada on Prince Edward Island. This research process centered on an author study, with direct teaching and clear assignment. The resulting model has been adapted to various grade levels and subject areas in different schools.Source type: Electronic(1)http://proquest.umi.com/pqdweb?did=49237063&Fmt=7&clientId=65345&RQT=309&VName=PQ
Active X-ray optics for the next generation of X-ray space telescopes
No full textDescribed within is the design, manufacture, metrology and X-ray testing of an active X-ray
prototype intended for the next generation of X-ray telescopes. One of the challenges faced by
the X-ray telescope community is how to combine high resolution and high sensitivity into one
system, as weight limitations place constraints on the optics that can be launched. Therefore the
mandate of the active X-ray prototype is to provide high sensitivity through the ability of the optics
to be nested and to deliver high angular resolution through the active control of the optic’s form.
Piezoelectric unimorph actuators provide the active component: it is intended that they will correct
for figure errors within the optic and therefore increase the angular resolution capability.
The prototype’s design is based upon an ellipsoidal segment which provides point-to-point
focussing of an X-ray source. The prototype itself is composed of an electroformed nickel optic
where the non-reflective surface is populated with 30 piezoelectric actuators and it is the production
of the prototype that is the core of the presented research. Metrology of the actuators’ influence
functions is presented and highlight the prototype’s ability to deform its optic surface by microns.
In addition, the measured influence functions are compared against finite element models and a
distinct similarity between the functions is observed.
The prototype was tested at an X-ray beamline facility in November 2008 and the results
showed the prototype’s ability to correct the optic to achieve an improved angular resolution: from
0.786 arc-minutes to 0.686 arc-minutes in terms of full width half maximum. Finally, difficulties
in the manufacture of the prototype and X-ray testing shall be presented alongside future work in
conclusion to this thesis
Author, Geraldine Brooks at the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009 [picture] /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author, Geraldine Brooks during her visit to the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia
Discochiton crenulatum Hodgson, spec. n.
No full text<i>Discochiton crenulatum</i> Hodgson spec. n. <p>(Fig. 6)</p> <p> <b>Material examined. Holotype f: PAPUA NEW GUINEA:</b> left label: Paralecanium / New Guinea / on Orchidaceae / 8-7-78 leaf / Los Angeles 19306 / V. M c Donald / Balsam; right label: Discochiton / crenulatus / Hodgson / Holotype (USNM): 1/1adf (g, fairly mature). <b>Paratype ff:</b> left label: Paralecanium / New Guinea / ex Orchidaceae leaf / 11-7-78 / Los Angeles 19706 / V. M c Donald / Balsam; right label: Discochiton / crenulatum / Hodgson Paratype ff (USNM): 1/3adff (g, all young).</p> <p> Also seen: <b>Papua New Guinea</b>, West New Britain Prov., Kimbe, on coconut, 16.vii.1986, R.N.B. Prior CIE 18111 (BMNH): 1/1adf (f, missing venter – but stigmatic clefts characteristic).</p> <p>Note. The description is based on all the type specimens.</p> <p> <b>Slide-mounted adult female.</b> Body oval, broadest across abdomen. Length 4.0– 7.5 mm, width 3.0– 5.5 mm.</p> <p> <i>Dorsum.</i> Derm rather uniformly sclerotised but, on holotype, with a pattern of stronger sclerotisation medially; areolations present submarginally and submedially, almost round to oval, tending to be grouped (most pronounced around clear areas, eyespots and ends of each stigmatic ray); derm with abundant minute pale spots; derm around anal plates becoming heavily sclerotised with small oval areolations. Marginal radial lines absent but indicated by lines of pores and setae, with 13 or 14 ‘lines’ on head between anterior stigmatic clefts, each side with 5 between stigmatic clefts and 13 on abdomen; with long stigmatic rays present. With 4 pairs of abdominal clear areas and another at apices of anterior stigmatic rays. Dorsal setae each finely spinose to setose, with a flagellate apex, each about 12 µm long with a strongly sclerotised basal socket; those located submarginally and submedially each in a membranous area about 8 µm wide; frequent in a sparse polygonal pattern but absent medially. Preopercular pores present, each pore strongly convex and about 3.0–3.5 µm wide; none associated with CA1 & CA2, but 4–7 pores associated with CA3 and 8–11 with CA4. Other dorsal pores of two sizes: (i) larger pores, each about 4.5 µm wide, present in a sparse polygonal pattern throughout, and (ii) smaller pores, each about 1 µm wide in a unsclerotised spot about 1.5 µm wide, perhaps more randomly distributed. Anal plates together narrowly quadrate, with anterior and posterior margins subequal in length; each plate with 4 minute setae near posterior apex, plus 0 or 1 small pores a little more anteriorly; length of plates 270–305 µm, combined width 225–255 µm. Anogenital fold with 3 or 4 minute setae at each corner of anterior margin, each lateral margin with 1 at anterior end and another posteriorly.</p> <p> <i>Margin.</i> Margin with shallow corrugations and numerous very short radial lines. Marginal setae broadly fanshaped, each clearly wider than long, 40–45 µm wide, about 23 µm long; numbering about 117–161 setae anteriorly on head between anterior stigmatic clefts, each side with 39–65 between stigmatic clefts and 95–142 on abdomen. Stigmatic clefts quite deep, with a narrow entrance; each sclerotised inner margin with a saw-like (crenulated) edge and each margin broadly sclerotised with 12–18 spiracular disc-pores within sclerotisation. Each cleft with 3 stigmatic spines subequal in length, each spine 30–40 µm long, parallel-sided with a blunt apex, some slightly bulbous basally. Eyespots large, each in a clear socket 125–140 µm wide; diameter of lens about 33–35 µm.</p> <p> <i>Venter.</i> Derm membranous, with a narrow marginal band about 60–90 µm wide. Multilocular disc-pores frequent on either side of genital opening and on preceding segment only, each side with 20–31 on abdominal segment VII and 20–40 on segment VI. Spiracular disc–pores present in a broad band up to about 4 pores wide, with 47–70 pores in each anterior band and 50–70 in each posterior band (of which 12–18 in sclerotised area of each cleft), posterior band always without pores in middle section. Ventral microducts minute, present in a dense group just posterior to and on either side of labium, sparse elsewhere. Ventral setae: with 2 pairs of short and 1 pair of longer interantennal setae; pairs of long pregenital setae on segments VII–V (those on VII each 75 µm long); with a group of 8–14 long setae laterad to anterior end of anal cleft; small setae frequent medially just anterior to vulva on abdominal segment VII and in submedial groups segmentally between anal area and posterior spiracle; otherwise ventral setae very sparse and submarginal setae sparse and extremely short. Antennae reduced, each with segmental divisions between most segments obscure or absent; total length 115–145 µm; apical segment short, 16– 18 µm long; apical setae each 20–23 µm long. Clypeolabral shield 125–135 µm long. Spiracles: width of each peritreme 50–60 µm. Legs reduced to small stubs but often with some segmentation and a minute claw.</p> <p> <b>Comments.</b> Adult female <i>D. crenulatum</i> <b>spec. n.</b> are extremely similar to those of <i>D. browni</i> (described as new above); both are without multilocular disc-pores on abdominal segment V. They differ as follows (characterstates for <i>D. browni</i> in brackets): (i) preopercular pores restricted to CA3 and CA4 only (associated with all four pairs of abdominal clear areas, although fewer associated with CA1 and CA2); (ii) legs better developed, showing some segmentation (just simple stubs, with no segmentation), (iii) dorsal setae parallel-sided, only narrowing slightly to a blunt apex (mostly narrowing to a point), and (iv) ventral setae frequent in bands across abdominal segments (very few). It is possible that these two species could be geographic variants of the same species but the above differences are sufficient to separate them at present.</p> <p> <b>Host-plants</b> (<i>Cocos nucifera,</i> Arecaceae); Orchidaceae.</p> <p> <b>Name derivation.</b> The name <i>crenulatum</i> is a Latin adjective and refers to the saw-like (crenulated) margins to the stigmatic clefts.</p>Published as part of <i>Chris J. Hodgson & Douglas J. Williams, 2018, Revision of the soft scale genus Paralecanium (Hemiptera: Coccomorpha: Coccidae) with the introduction of three new genera and twenty new species, pp. 1-162 in Zootaxa 4443 (1)</i> on pages 24-26, DOI: 10.11646/zootaxa.4443.1.1, <a href="http://zenodo.org/record/1305628">http://zenodo.org/record/1305628</a>
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
X-ray polarization in relativistic jets
No full textWe investigate the polarization properties of Comptonized X-rays from relativistic jets in active galactic nuclei (AGN) using Monte Carlo simulations. We consider three scenarios commonly proposed for the observed X-ray emission in AGN: Compton scattering of blackbody photons emitted from an accretion disc; scattering of cosmic microwave background (CMB) photons and self-Comptonization of intrinsically polarized synchrotron photons emitted by jet electrons. Our simulations show that for Comptonization of disc and CMB photons, the degree of polarization of the scattered photons increases with the viewing inclination angle with respect to the jet axis. In both cases, the maximum linear polarization is ≈20 per cent. In the case of synchrotron self-Comptonization (SSC), we find that the resulting X-ray polarization depends strongly on the seed synchrotron photon injection site, with typical fractional polarizations P≈ 10–20 per cent when synchrotron emission is localized near the jet base, while P≈ 20–70 per cent for the case of uniform emission throughout the jet. These results indicate that X-ray polarimetry may be capable of providing unique clues to identify the location of particle acceleration sites in relativistic jets. In particular, if synchrotron photons are emitted quasi-uniformly throughout a jet, then the observed degree of X-ray polarization may be sufficiently different for each of the competing X-ray emission mechanisms (synchrotron, SSC or external Comptonization) to determine which is the dominant process. However, X-ray polarimetry alone is unlikely to be able to distinguish between disc and CMB Comptonization
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