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Search Results: 1 - 10 of 58 matches for " Goldie Osuri "
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White Free Speech: The Fraser Event and its Enlightenment Legacies
Goldie Osuri
Cultural Studies Review , 2011,
Abstract: This essay discusses the 2005 Australia-wide controversy about the white supremacist comments made by Macquarie University academic Associate Professor Andrew Fraser. It locates the means by which this white supremacism manifested itself not only through Fraser comments, but also through arguments surrounding free speech/academic freedom. Using whiteness theory and its examination of whiteness as an Enlightenment legacy, Osuri argues that the collusion between Fraser’s white supremacism and the free speech/academic freedom argument is based on a disavowal of how whiteness operates, as Aileen Moreton-Robinson describes it, as an epistemological and ontological a priori, an embodied form of knowledge-production, and collective white hegemony.
(Post) Secular Discomforts: Religio-Secular Disclosures in the Indian Context
Goldie Osuri
Cultural Studies Review , 2012,
Abstract: The post-secular turn at the intersection of the fields of political philosophy, anthropology, religious, postcolonial and cultural studies has highlighted theological political formations which have informed differential histories of the secular. This essay examines how debates around the secular and the post-secular play out in the Indian context. Some questions that the essay addresses are: What does a reconsideration of the secular, a probing of its discomforts, offer in the Indian context? And what are the limits of a post-secular turn—in the sense of a reconsideration of spiritual belief or theological conventions as a resource for co-existence—if we think through the forms of power generated by this turn?
Evidence-Based Public Health, by Ross C. Brownson, Elizabeth A. Baker, Terry L. Leet, Kathleen N. Gillespie
Goldie MacDonald
Preventing Chronic Disease , 2004,
Abstract: In a relatively short amount of time, the term evidence-based public health has flooded dialogues on program planning, implementation, and evaluation. What is evidence-based public health? Abigail Adams reminded us that [w]e have too many high sounding words, and too few actions that correspond with them (1). In Evidence-Based Public Health, Brownson and colleagues provide not only a precise definition of a complex term but also a stepwise framework for decision making toward improved public health practice. The authors order the text according to a 6-step process for enhancing evidence-based decision making in public health: 1) develop an initial statement of the issue; 2) quantify the issue; 3) search the scientific literature and organize the information; 4) develop and prioritize program options; 5) develop an action plan and implement interventions; and 6) evaluate the program or policy. With every step in the process, the authors provide resources for immediate use, including Wide-ranging OnLine Data for Epidemiologic Research (WONDER), a Centers for Disease Control and Prevention (CDC) program; the Community Health Status Indicators Project; the Annual Review of Public Health; evidence-based information on health care outcomes, quality, cost, use, and access via the Agency for Healthcare Research and Quality (AHRQ); the Guide to Community Preventive Services; the Models that Work Campaign to identify and promote innovative community-based models; the Planned Approach to Community Health (PATCH); PRECEDE-PROCEED; and the CDC Working Group on Evaluation.
Cost-Effectiveness of Alternative Blood-Screening Strategies for West Nile Virus in the United States.
PLOS Medicine , 2006,
Abstract: BACKGROUND: West Nile virus (WNV) is endemic in the US, varying seasonally and by geographic region. WNV can be transmitted by blood transfusion, and mandatory screening of blood for WNV was recently introduced throughout the US. Guidelines for selecting cost-effective strategies for screening blood for WNV do not exist. METHODS AND FINDINGS: We conducted a cost-effectiveness analysis for screening blood for WNV using a computer-based mathematical model, and using data from prospective studies, retrospective studies, and published literature. For three geographic areas with varying WNV-transmission intensity and length of transmission season, the model was used to estimate lifetime costs, quality-adjusted life expectancy, and incremental cost-effectiveness ratios associated with alternative screening strategies in a target population of blood-transfusion recipients. We compared the status quo (baseline screening using a donor questionnaire) to several strategies which differed by nucleic acid testing of either pooled or individual samples, universal versus targeted screening of donations designated for immunocompromised patients, and seasonal versus year-long screening. In low-transmission areas with short WNV seasons, screening by questionnaire alone was the most cost-effective strategy. In areas with high levels of WNV transmission, seasonal screening of individual samples and restricting screening to blood donations designated for immunocompromised recipients was the most cost-effective strategy. Seasonal screening of the entire recipient pool added minimal clinical benefit, with incremental cost-effectiveness ratios exceeding US$1.7 million per quality-adjusted life-year gained. Year-round screening offered no additional benefit compared to seasonal screening in any of the transmission settings. CONCLUSIONS: In areas with high levels of WNV transmission, seasonal screening of individual samples and restricting screening to blood donations designated for immunocompromised recipients is cost saving. In areas with low levels of infection, a status-quo strategy using a standard questionnaire is cost-effective.
Virtual Communities and the Social Dimension of Privacy
Janis L. Goldie
University of Ottawa Law and Technology Journal , 2006,
Abstract: While the issue of privacy and the internet has been a popular topic among academics across the disciplines for quite some time, this study explores the unique privacy concerns of virtual community participants. Employing a broad understanding of privacy, this study points to the need to focus on the expressive and social role of privacy in regard to virtual community participants. Furthermore, this study suggests that virtual communities offer members a unique opportunity to work on their self-identity via the degree of self-expression and social interaction that is available in these groups. This finding helps to explain why users consciously bring the “private” to the public realm, despite the inherent privacy risks they face in doing so. To investigate how virtual community participants perceive privacy and how this understanding helps explain their participation in a forum where privacy is presumably jeopardized, the article describes an interview-based study of virtual community participants. *************** Si la question de la vie privée et de l’internet est un sujet à la mode chez les universitaires de toutes les disciplines depuis un bon moment, cette étude explore les préoccupations uniques des participantes et des participants à la communauté virtuelle en matière de la vie privée. Partant d’une interprétation très large de la vie privée, l’étude souligne le besoin de prêter une attention plus grande au r le expressif et social de la vie privée pour ces participantes et participants. De plus, l’étude suggère que les communautés virtuelles offrent à leurs membres des occasions uniques de développer leur propre identité par le degré de liberté d’expression et d’interaction sociale que prévoient ces groupes. Les conclusions de cette étude aident à saisir pourquoi les utilisatrices et les utilisateurs rendent volontairement publics des volets de leur vie privée malgré les menaces à leur vie privée auxquels ils s’exposent de la sorte. L'article décrit une étude de la participation à la communauté virtuelle entreprise à l'aide d'entrevues afin de se renseigner sur la perception de la vie privée qu'ont les participantes et les participants à la communauté virtuelle et sur la fa on dont leur vision en la matière aide à expliquer leur participation à un forum où la vie privée risque d'être en péril.
A Comparative Study on Performance of Analysis Nudging and 3DVAR in Simulation of a Heavy Rainfall Event Using WRF Modeling System
Ashish Routray,Krishna K. Osuri,Makarand A. Kulkarni
ISRN Meteorology , 2012, DOI: 10.5402/2012/523942
Abstract: The present study focuses on the performance-based comparison of simulations carried out using nudging (NUD) technique and three-dimensional variational (3DVAR) data assimilation system (3DV) of a heavy rainfall event occurred during 25–28 June 2005 along the west coast of India. The Indian conventional and nonconventional observations are used in the 3DV experiment. Three numerical experiments are conducted using WRF modeling system, the model is integrated upto 54 hours from the initial time 0000 UTC of 25 June 2005. It is noticed that the meteorological parameters are improved in the resulting high-resolution analyses prepared by NUD and 3DV compared to without data assimilation experiment (i.e., called CNTL experiment). However, after the successful inclusion of observations using the 3DVAR data assimilation technique, the model is able to simulate better structure of the convective organization as well as prominent synoptic features associated with the mid-tropospheric cyclones (MTC) than the NUD experiment and well correlated with the observations. The simulated location and intensity of rainfall is also improved in 3DV simulation as compared with other experiments. Similar results are noticed in the root mean squar errors, correlation coefficients, and Equitable Threat Scores between TRMM and model simulated rainfall for all the three experiments. 1. Introduction Most of the rainfall along the Indian Peninsula during the southwest monsoon (SWM) occurs in association with convective activity over the Arabian Sea (AS) and the Bay of Bengal (BOB) that propagates into the peninsular India. These rainfall activities are usually associated with mesoscale convective systems (MCSs) embedded in large-scale synoptic system. Several investigators have also studied the interaction of the low-level jet with Western Ghats which lead to substantial rainfall during SWM along the west coast of India. The analysis by the authors in [1] shows that the maximum rainfall rate along the west coast of India could be as high as about 20?cm per day. Previous studies on heavy rainfall [2, 3] identified numerous patterns and mechanisms in the synoptic scale and mesoscale that promote heavy rainfall developments and established linkage between heavy rainfall events along with wide variety of synoptic features. There have been considerable improvements in high-resolution mesoscale models over the past few decades. The mesoscale models have shown increased skill in producing not only the correct rainfall intensity and location but also the timing of evolution of the convection
Non-Equilibrium Superconductivity in Kinetic Inductance Detectors for THz Photon Sensing
D. J. Goldie,S. Withington
Physics , 2014,
Abstract: Low temperature Kinetic Inductance Detectors (KIDs) are attractive candidates for producing quantumsensitive, arrayable sensors for astrophysical and other precision measurement applications. The readout uses a low frequency probe signal with quanta of energy well-below the threshold for pair-breaking in the superconductor. We have calculated the detailed non-equilibrium quasiparticle and phonon energy spectra generated by the probe signal of the KID when operating well-below its superconducting transition temperature Tc within the framework of the coupled kinetic equations described by Chang and Scalapino.[1] At the lowest bath temperature studied Tb/Tc = 0.1 the quasiparticle distributions can be driven far from equilibrium. In addition to the low frequency probe signal we have incorporated a high frequency (~ 1 THz) source signal well-above the pair-breaking threshold of the superconductor. Calculations of source signal detection efficiency are discussed
Non-equilibrium superconductivity in superconducting resonators
D. J. Goldie,S. Withington
Physics , 2012, DOI: 10.1088/0953-2048/26/1/015004
Abstract: We have calculated the non-equilibrium quasiparticle and phonon distributions $f(E)$, $n(\Omega)$, where $E$ and $\Omega$ are the quasiparticle and phonon energies respectively, generated by the photons of the probe signal of a low temperature superconducting resonator SR operating well-below its transition temperature $T_c$ as the absorbed probe power per unit volume $P_{abs}$ was changed. The calculations give insight into a rate equation estimate which suggests that the quasiparticle distributions can be driven far from the thermal equilibrium value for typical readout powers. From $f(E)$ the driven quasiparticle number density $N_{qp}$ and lifetime $\tau_r$ were calculated. Using $N_{qp}$ we defined an effective temperature $T_N^*$ to describe the driven $f(E)$. The lifetime was compared to the distribution averaged thermal lifetime at $T_N^*$ and good agreement was found typically within a few percent. We used $f(E)$ to model a representative SR. The complex conductivity and hence the frequency dependence of the experimentally measured forward scattering parameter $S_{21}$ of the SR as a function of $P_{abs}$ were found. The non-equilibrium $S_{21}$ cannot be accurately modeled by a thermal distribution at an elevated temperature $T_{21}^*$ having a higher quality-factor in all cases studied and for low $P_{abs}$ $T_{21}^*\sim T_N^*$. Using $\tau_r$ and $N_{qp}$ we determined the achievable Noise Equivalent Power of the resonator used as a detector as a function of $P_{abs}$. Simpler expressions for $T_N^*$ as a function of $P_{abs}$ were derived which give a very good account of $T_N^*$ and also $N_{qp}$ and $\tau_r$. We conclude that multiple photon absorption from the probe increases the quasiparticle number above the thermal background and ultimately limits the achievable NEP of the resonator.
Diversification and the rate of molecular evolution: no evidence of a link in mammals
Xavier Goldie, Robert Lanfear, Lindell Bromham
BMC Evolutionary Biology , 2011, DOI: 10.1186/1471-2148-11-286
Abstract: We found no evidence for an association between clade size and substitution rates in mammals, for either the nuclear or the mitochondrial sequences. We found significant associations between body size and substitution rates, as previously reported.Our results present a contrast to previous research, which has reported significant positive associations between substitution rates and diversification for birds, angiosperms and reptiles. There are three possible reasons for the differences between the observed results in mammals versus other clades. First, there may be no link between substitution rates and diversification in mammals. Second, this link may exist, but may be much weaker in mammals than in other clades. Third, the link between substitution rates and diversification may exist in mammals, but may be confounded by other variables.Diversification is the net outcome of speciation and extinction. Clade size, the current species richness of a lineage, is a measure of net diversification because it is the result of the addition of species through speciation and the removal by extinction. A number of recent studies have shown positive relationships between rates of molecular evolution and net diversification. A positive relationship between substitution rates and species richness has been reported in angiosperms [1,2], carnivorous plants [3], and birds and reptiles [4,5]. Additionally, a relationship between the molecular path lengths of lineages and the number of nodes through which those lineages pass in molecular phylogenies has been interpreted as evidence of a connection between net diversification and rates of molecular evolution in a large range of taxa [6-8].There are a number of possible causes of a relationship between rates of molecular evolution and net diversification. It has been suggested that elevated substitution rates in diverging populations are the result of changes to the selective and demographic landscape that accompany speciation [6,7]. Cha
Nonequilibrium superconducting thin films with sub-gap and pair-breaking photon illumination
Tejas Guruswamy,David J. Goldie,Stafford Withington
Physics , 2015, DOI: 10.1088/0953-2048/28/5/054002
Abstract: We calculate nonequilibrium quasiparticle and phonon distributions for a number of widely-used low transition temperature thin-film superconductors under constant, uniform illumination by sub-gap probe and pair-breaking signal photons simultaneously. From these distributions we calculate material-characteristic parameters that allow rapid evaluation of an effective quasiparticle temperature using a simple analytical expression, for all materials studied (Mo, Al, Ta, Nb, and NbN) for all photon energies. We also explore the temperature and energy-dependence of the low-energy quasiparticle generation efficiency $\eta$ by pair-breaking signal photons finding $\eta \approx 0.6$ in the limit of thick films at low bath temperatures that is material-independent. Taking the energy distribution of excess quasiparticles into account, we find $\eta \to 1$ as the bath temperature approaches the transition temperature in agreement with the assumption of the two-temperature model of the nonequilibrium response that is appropriate in that regime. The behaviour of $\eta$ with signal frequency scaled by the superconducting energy gap is also shown to be material-independent, and is in qualitative agreement with recent experimental results. An enhancement of $\eta$ in the presence of sub-gap (probe) photons is shown to be most significant at signal frequencies near the superconducting gap frequency and arises due to multiple photon absorption events that increase the average energy of excess quasiparticles above that in the absence of the probe.
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