171,043 research outputs found
International year of older persons: Mentoring research project
No full textA report, by Judith MacCallum and Susan Beltman, Murdoch University, that identifies models of good practice of mentoring in school settings. The report looks at issues associated with the implementation of mentoring programs in school settings and key recommendations for consideration by Australian schools and education systems
Neoheterobothrium cynoscioni MacCallum 1917
No full textNeoheterobothrium cynoscioni (MacCallum, 1917) ǂ Diclidophora cynoscioni MacCallum, 1917: 48. Neoheterobothrium cynoscioni – Llewellyn 1941: 416-430. GEOGRAPHIC DISTRIBUTION. — Tamaulipas. Laguna Madre (Punta Piedra): Cynoscion nebulosus (Ramos-Guerra 1998; Iruegas-Buentello 1999). Yucatán. Celestún: C. nebulosus (Mendoza-Franco et al. 2013b). SPECIMENS IN COLLECTIONS. — CNHE (8463). REMARK This species was recorded in Yucatán as Choricotyle cynoscioni by Mendoza-Franco et al. (2013b); the inclusion in Neoheterobothium Price, 1943 is doubtful according to Mamaev (1987), who retained it in Choricotyle Van Beneden & Hesse, 1863.Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 547, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/457869
Cyclocoelum halcyonis MacCallum 1921, n. comb.
No full textS. halcyonis (MacCallum, 1921) n. comb. Type host. Rudy kingfisher, Halcyon coromando (Latham) (given as Halcyonis coromando by MacCallum 1921), (Coraciiformes: Halcyonidae). Type locality. Luzon, Republic of the Philippines. Remarks. This species was originally described as Cyclocoelum halcyonis MacCallum, 1921 but was considered a synonym of Cyclocoelum obscurum (Leidy, 1887) by Tubanqui (1932), Witenberg (1928), Bashkirova (1950) and of C. mutabile (Zeder, 1800) by Joyeux & Baer (1927). MacCallum (1921) provided a minimal description of this species and a figure of a longitudinal section (separating the ventral half from the dorsal half) of an adult. It appears as if MacCallum may have followed Braun (1901), who mistakenly considered the pharynx of cyclocoelids to be an oral sucker because what appears to be the muscular pharynx in Fig. 84 is labelled “m”, presumably referring to the mouth, and a much smaller structure posterior to it that appears to be the genital pore is labelled as the pharynx. MacCallum (1921) also apparently considered the ovary to be intertesticular, forming a triangle with the testes as in Monostomum mutabile (= Cyclocoelum mutabile) (Cyclocoelinae). According to MacCallum (1921) this species has the genital pore in the region of the pharynx similar to that of species of Cephalogonimus Poirier, 1886, which suggests that this species has a prepharyngeal genital pore and vitelline fields that are not confluent posteriorly (“The vitellarium consists of a narrow line of glands which, like the intestine, surround the margin of the body, except a small portion at the anterior end.”), which would place it in Cyclocoelum. However, the placement of the genital pore is postpharyngeal in Fig. 84, which would place this species in Selfcoelum. Unlike species of Cyclocoelum, Fig. 84 of the original description, although somewhat unclear, appears to show that the intertesticular ovary may be nearly in a straight line with the tandem testes (Hyptiasminae). If that is the case and the genital pore is prepharyngeal, this species would be placed in Prohyptiasmus, while if the genital pore is postpharyngeal it would be assigned to Morishitium. Given the available information, this species is tentatively placed in Selfcoelum because the ovary appears to be intertesticular forming a triangle with the testes (Cyclocoelinae), the genital pore is postpharyngeal and the vitelline fields are not confluent posteriorly. Until the position of the ovary relative to the testes is better documented, we recommend that this species be considered in any comparison of specimens in Cyclocoelinae or Hyptiasminae (where the vitelline fields are not confluent posteriorly) to existing species of Cyclocoelum, Selfcoelum, Prohyptiasmus and Morishitium. This species could not be included in our key to species of Selfcoelum because of the incomplete description and lack of a suitable illustration. No oral or ventral suckers described—MacCallum (1921).Published as part of Dronen, Norman O. & Blend, Charles K., 2015, Updated keys to the genera in the subfamilies of Cyclocoelidae Stossich, 1902, including a reconsideration of species assignments, species keys and the proposal of a new genus in Szidatitreminae Dronen, 2007, pp. 1-100 in Zootaxa 4053 (1) on page 21, DOI: 10.11646/zootaxa.4053.1.1, http://zenodo.org/record/23711
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
Fungible Parameter Contours and Confidence Regions in Structural Equation Models
No full textThere are at least two kinds of uncertainty associated with parameter estimates when statistical models are fit to sample data. The first kind of uncertainty is typically conveyed by confidence regions which provide a plausible range of values for population parameters of interest. The second kind of uncertainty involves a sensitivity analysis (Cook, 1986) with respect to model fit. Here, contours representing alternative solutions for parameter estimates that are almost as good as the optimal estimates in terms of model fit are obtained. Contours of these slightly suboptimal parameter values have been termed fungible weights or contours (Waller, 2008; Waller & Jones, 2009; MacCallum, Browne & Lee, 2009). Although distinct from each other, confidence regions and fungible contours communicate parameter uncertainty and are both computed from the likelihood function. Given these commonalities, we set out to clarify the relationship between confidence regions and fungible parameter contours by accomplishing three objectives. First, we show that confidence regions and fungible parameter contours are analytically related when both types of parameter uncertainty are unified under a general perturbation framework. Second, we carried out a simulation study that confirms the distinction between confidence regions and fungible parameter contours. Although the magnitude of correlations among measured variables have an impact on these two kinds of parameter uncertainty, confidence regions are primarily determined by sample size while fungible parameter contours are determined primarily by model fit and, to a much smaller extent, sampling variability. Third, we implemented a new computational procedure for obtaining confidence regions and fungible parameter contours associated with focal parameters by the profile likelihood method, which takes account of nuisance parameters. We conclude with directions for future research and end with a discussion of what applied researchers may gain from examining these two distinct kinds of parameter uncertainty.Doctor of Philosoph
Australian Property Law: Cases and Materials
No full text4th ed.With a clear structure making the book easy to navigate, the explanatory approach helps students to develop the analytical and problem-solving skills necessary for successful insolvency practice.Adrian Bradbrook, Susan MacCallum, Anthony Moore, Scott Grattan and Lynden Griggshttp://trove.nla.gov.au/work/15917791?q=9780455227900&c=book&sort=holdings+desc&_=1344566999814&versionId=16488465
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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
Real-time Analysis of Sensory Dissonance
No full textWe describe a tool for real-time musical analysis based on a measure of roughness, the principal element of sensory dissonance. While most historical musical analysis is based on the notated score, our tool permits analysis of a recorded or live audio signal in its full complexity. We proceed from the work of Richard Parncutt and Ernst Terhardt, extending their algorithms for the psychoacoustic analysis of harmony to be used for the live analysis of spectral data. This allows for the study of a wider variety of timbrally-rich acoustic or electronic sounds which was not possible with previous algorithms. Further, the direct treatment of audio signal facilitates a wide range of analytical applications, from the comparison of multiple recordings of the same musical work to the real-time analysis of a live performance. Our algorithm is programmed in C as an external object for the program Max/MSP.
Taking musical examples by Arnold Schoenberg, Gérard Grisey and Iannis Xenakis, our algorithm yields varying roughness estimates depending on instrumental orchestration or electronic texture, confirming our intuitive understanding that timbre affects sensory dissonance. This is one of the many possibilities this tool presents for analysis and composition of music that is timbrally-dynamic and microtonally-complex
UCL Press – Open Access Megajournal Project Town Hall
No full textDate: 16th January 2018 Programme: Welcome address, Dr Paul Ayris, Pro-Vice-Provost (UCL Library Services) Guest talks: Robert Kiley, Head of Open Research, Wellcome Trust Stephanie Dawson, CEO ScienceOpen Catriona MacCallum, Director of Open Science, Hindawi UCL Press Open Access Megajournal project, Ian Caswell (UCL Press, Journals Manager
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