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Search Results: 1 - 10 of 86158 matches for " GILLIAN W. WATSON "
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Cycad Aulacaspis Scale, a Newly Introduced Insect Pest in Indonesia
RANGASWAMY MUNIAPPAN,GILLIAN W. WATSON,GREGORY ALLYN EVANS,AUNU RAUF
HAYATI Journal of Biosciences , 2012,
Abstract: Cycad aulacaspis scale (Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae)) is native to Thailand and Vietnam. Since the early 1990s it has been spreading around the world due to the trade in cycad plants for ornamental use. Infestation by this scale can kill cycads in only a few months. Its accidental introduction to Florida endangered the ornamental cycad-growing industry; and in Guam and Taiwan, endemic cycads (Cycas micronesica and C. taitungensis, respectively) are currently threatened with extinction by cycad aulacaspis scale. In November 2011, an introduced scale was discovered damaging cycads in the Bogor Botanic Garden. Samples from Bogor were taken for identification of the scale, and the material was kept for some time to rear out any insect parasitoids that were present. Both the scale insects and parasitoids were prepared on microscope slides and studied microscopically for authoritative identification. The scale was confirmed as A. yasumatsui. The parasitoid Arrhenophagus chionaspidis Aurivillius (Hymenoptera: Encyrtidae) and the hyperparasitoid Signiphora bifasciata Ashmead (Hymenoptera: Signiphoridae) were identified from the samples. Unless immediate remedial measures are taken, several endemic species of cycad in Indonesia may be endangered by infestation by cycad aulacaspis scale.
An exploration of lifestyle beliefs and lifestyle behaviour following stroke: findings from a focus group study of patients and family members
Maggie Lawrence, Susan Kerr, Hazel Watson, Gillian Paton, Graham Ellis
BMC Family Practice , 2010, DOI: 10.1186/1471-2296-11-97
Abstract: There is a limited evidence-base to guide the development and delivery of effective secondary prevention lifestyle interventions in the stroke field. This study, which was underpinned by the Theory of Planned Behaviour, sought to explore the beliefs and perceptions of patients and family members regarding the provision of lifestyle information following stroke. We also explored the influence of beliefs and attitudes on behaviour. We believe that an understanding of these issues is required to inform the content and delivery of effective secondary prevention lifestyle interventions.We used purposive sampling to recruit participants through voluntary sector organizations (29 patients, including 7 with aphasia; 20 family members). Using focus group methods, data were collected in four regions of Scotland (8 group discussions) and were analysed thematically.Although many participants initially reported receiving no lifestyle information, further exploration revealed that most had received written information. However, it was often provided when people were not receptive, there was no verbal reinforcement, and family members were rarely involved, even when the patient had aphasia. Participants believed that information and advice regarding healthy lifestyle behaviour was often confusing and contradictory and that this influenced their behavioural intentions. Family members and peers exerted both positive and negative influences on behavioural patterns. The influence of HCPs was rarely mentioned. Participants' sense of control over lifestyle issues was influenced by the effects of stroke (e.g. depression, reduced mobility) and access to appropriate resources.For secondary prevention interventions to be effective, HCPs must understand psychological processes and influences, and use appropriate behaviour change theories to inform their content and delivery. Primary care professionals have a key role to play in the delivery of lifestyle interventions.Stroke is a major cause
Black Holes in Short Period X-ray Binaries and the Transition to Radiatively Inefficient Accretion
Gillian Knevitt,Graham Wynn,Simon Vaughan,Mike Watson
Physics , 2013, DOI: 10.1093/mnras/stt2008
Abstract: By comparing the orbital period distributions of black hole and neutron star low mass X-ray binaries (LMXBs) in the Ritter-Kolb catalogue we show that there is statistical evidence for a dearth of black hole systems at short orbital periods (P_orb < 4h). This could either be due to a true divergence in orbital period distributions of these two types of system, or to black hole LMXBs being preferentially hidden from view at short orbital periods. We explore the latter possibility, by investigating whether black hole LMXBs could be concealed by a switch to radiatively inefficient accretion at low luminosities. The peak luminosity and the duration of X-ray binary outbursts are related to the disc radius and, hence, the orbital period. At short periods, where the peak outburst luminosity drops close to the threshold for radiatively inefficient accretion, black hole LMXBs have lower outburst luminosities, shorter outburst durations and lower X-ray duty cycles than comparable neutron star systems. These factors can combine to severely reduce the detection probability of short period black hole LMXBs relative to those containing neutron stars. We estimate the outburst properties and orbital period distribution of black hole LMXBs using two models of the transition to radiatively inefficient accretion: an instantaneous drop in accretion efficiency (eta) to zero, at a fraction (f) of the Eddington luminosity (L_Edd) and a power-law efficiency decrease, eta \propto \dot{M}^n, for L < f*L_Edd. We show that a population of black hole LMXBs at short orbital periods can only be hidden by a sharp drop in efficiency, either instantaneous or for n >= 3. This could be achieved by a genuine drop in luminosity or through abrupt spectral changes that shift the accretion power out of a given X-ray band.
Some preliminary remarks on the antecedents of modern Indonesian literature
C.W. Watson
Bijdragen tot de Taal-, Land- en Volkenkunde , 1971,
Abstract:
Satire and Political Purpose in the Novels of Jose Rizal
C.W. Watson
Kasarinlan : Philippine Journal of Third World Studies , 1998,
Abstract: More than a century ago, future national hero, Jose Rizal, attempted to put the Spanish colonial presence in a bad light. While in Europe, Rizal wrote two future classics, the Noli Me Tangere and the El Filibusterismo, through which Rizal made known his views towards colonial and religious oppression, his hopes for his country and his place in the then revolution in the works. While achieving modest success in Europe, the Noli, a triumph in satire, had limited impact in the Philippines when it was published in 1884, much to Rizalís dismay. The Noli merely earned him a token filibustero status and a place in the watch list upon his return but was inconsequential in terms of raising political consciousness. No reform forthcoming, Rizal retreated to Europe and wrote the sequal. Equally satirical and politically sharp, the Fili took on the same laughably absurd character and situations but was of darker humor and more violently tragic resolutions, reflecting Rizalís final recognition of the futility of his role as a poet.
Mother-tongue teaching in Australia: The case of New South Wales.
Sawyer, W.,Watson, K.
L1 Educational Studies in Language and Literature , 2001,
Abstract: Using the state of New South Wales (NSW) in Australia as a case study, this article explores the development of mother-tongue English as a subject in the junior-to-middle secondary years of schooling (years 7–10). The current syllabus for English in years 7–10, and its predecessor, were highly influenced by the work of James Moffett and John Dixon in instituting the ‘growth model’ of English in NSW – a model characterised partly by the substitution of exercises in grammar and related areas by the principle of language learning through use. This model of English has come under attack in Australia generally from two main sources: schools of critical literacy and advocates of a genre-based approach to writing. Each of these rejects what they see as an emphasis on the individual in the ‘growth’ model and a lack of a sense of social construction. From the late 1980s, genre-based approaches to writing increasingly identified themselves with ‘literacy’, until then a unproblematic ‘given’ in ‘English’ syllabuses. ‘Literacy’ in official documentation now refers to language practices across the curriculum and, in terms of writing, to formulaic practices which refuse to see subject-based language as problematic.
MAGNETIC FIELDS AND THE POLARIZATION OF ASTROPHYSICAL MASER RADIATION: A REVIEW
W. D. Watson
Revista mexicana de astronomía y astrofísica , 2009,
Abstract: Basic aspects of the relationship between the magnetic eld and polarized maser radiation are described with the emphasis on interpreting the observed spectra. Special attention is given to three issues { the limitations on the applicability of the classic solutions of Goldreich, Keeley, & Kwan (1973), inferring the strength of the magnetic eld from the circular polarization when the Zeeman splitting is much less than the spectral linebreadth (especially for SiO masers), and the signi cance of the absence of components of the Zeeman triplet in the spectra of OH masers in regions of star formation.
ILDG Middleware Working Group Status Report
B. Joo,W. Watson
Physics , 2004, DOI: 10.1016/j.nuclphysbps.2004.11.152
Abstract: We report on the status of the ILDG Middleware Working Group.
Land of a Couple of Dances: Global and Local Influences on Freestyle Play in Dance Dance Revolution
Gillian
Fibreculture Journal , 2006,
Abstract: This paper traces successful and unsuccessful attempts to shape the meanings of the video game Dance Dance Revolution, specifically with reference to what "dancing" means in this context, as the game moves between various interested parties - game developers, players, Internet forum participants, and other media producers. Drawing on Actor-Network Theory and the network analyses of Manuel Castells, the paper reconstructs the forces shaping players' stylistic decisions through an analysis of dance game machines and software, and of a single forum thread on DDRFreak.com, a major website in the dance game community. The paper asks who decides how DDR players dance and at what times? Are the decisions about play made in the development meeting, the arcade, competitions, online or around the home console? Globally, how do some regions or groups emerge as experts or leaders in play style? Analysis indicates that within the United States, Californian players from major cities dominate discussion, supported by the global flows of people, resources, and capital through the state. The dominant players support their stated norms for play through recourse to mainstream conceptions of masculinity, rap music and associated styles of dance.
Preferences across the Menstrual Cycle for Masculinity and Symmetry in Photographs of Male Faces and Bodies
Marianne Peters, Leigh W. Simmons, Gillian Rhodes
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0004138
Abstract: Background Previous studies have shown that women increase their preference for masculinity during the fertile phase of the menstrual cycle. Evidence for a similar preference shift for symmetry is equivocal. These studies have required participants to choose between subtle variations in computer-generated stimuli, and preferences for more natural stimuli have not been investigated. Methodology/Principal Findings Our study employed photographs of individual males to investigate women's preferences for face and body masculinity and symmetry across the menstrual cycle. We collected attractiveness ratings from 25 normally cycling women at high- and low-fertility days of the menstrual cycle. Attractiveness ratings made by these women were correlated with independent ratings of masculinity and symmetry provided by different sets of raters. We found no evidence for any cyclic shift in female preferences. Correlations between attractiveness and masculinity, and attractiveness and symmetry did not differ significantly between high- and low-fertility test sessions. Furthermore, there was no significant difference between high- and low-fertility ratings of attractiveness. Conclusions These results suggest that a menstrual cycle shift in visual preferences for masculinity and symmetry may be too subtle to influence responses to real faces and bodies, and subsequent mate-choice decisions.
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