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Search Results: 1 - 10 of 11594 matches for " Matthew Gill "
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Alex Preda, Framing Finance: The Boundaries of Markets and Modern Capitalism.
Matthew Gill
The Canadian Journal of Sociology , 2011,
Abstract: Book Review
The Chern-Ricci flow on smooth minimal models of general type
Matthew Gill
Mathematics , 2013,
Abstract: We show that on a smooth Hermitian minimal model of general type the Chern-Ricci flow converges to a closed positive current on M. Moreover, the flow converges smoothly to a Kahler-Einstein metric on compact sets away from the null locus of K_M. This generalizes work of Tsuji and Tian-Zhang to Hermitian manifolds, providing further evidence that the Chern-Ricci flow is a natural generalization of the Kahler-Ricci flow.
Collapsing of Products Along the K?hler-Ricci Flow
Matthew Gill
Mathematics , 2012,
Abstract: Let $X = M \times E$ where $M$ is an $m$-dimensional K\"ahler manifold with negative first Chern class and $E$ is an $n$-dimensional complex torus. We obtain $C^\infty$ convergence of the normalized K\"ahler-Ricci flow on $X$ to a K\"ahler-Einstein metric on $M$. This strengthens a convergence result of Song-Weinkove and confirms their conjecture.
Long time existence of the (n-1)-plurisubharmonic flow
Matthew Gill
Mathematics , 2014,
Abstract: We consider the (n-1)-plurisubharmonic flow, suggested by Tosatti-Weinkove, and prove a formula for its maximal time of existence. This includes estimates that will be useful in further investigating the flow.
The behavior of Chern scalar curvature under Chern-Ricci flow
Matthew Gill,Daniel J Smith
Mathematics , 2013,
Abstract: In this note we study finite-time singularities in the Chern-Ricci flow. We show that finite-time singularities are characterized by the blow-up of the scalar curvature of the Chern connection.
Steady-State Neutronic Analysis of Converting the UK CONSORT Reactor for ADS Experiments
Hywel Owen,Matthew Gill,Trevor Chambers
Physics , 2011,
Abstract: CONSORT is the UK's last remaining civilian research reactor, and its present core is soon to be removed. This study examines the feasibility of re-using the reactor facility for accelerator-driven systems research by replacing the fuel and installing a spallation neutron target driven by an external proton accelerator. MCNP5/MCNPX were used to model alternative, high-density fuels and their coupling to the neutrons generated by 230 MeV protons from a cyclotron striking a solid tungsten spallation target side-on to the core. Low-enriched U3Si2 and U-9Mo were considered as candidates, with only U-9Mo found to be feasible in the compact core; fuel element size and arrangement were kept the same as the original core layout to minimise thermal hydraulic and other changes. Reactor thermal power up to 2.5 kW is predicted for a keff of 0.995, large enough to carry out reactor kinetic experiments.
Joubert Syndrome Presenting with Motor Delay and Oculomotor Apraxia
Harjinder Gill,Brinda Muthusamy,Denize Atan,Cathy Williams,Matthew Ellis
Case Reports in Pediatrics , 2011, DOI: 10.1155/2011/262641
Abstract: We describe two sisters who presented in early childhood with motor delay and unusual eye movements. Both demonstrated hypotonia and poor visual attention. The older girl at 14 weeks of age showed fine pendular horizontal nystagmus more pronounced on lateral gaze, but despite investigation with cranial MRI no diagnosis was reached. The birth of her younger sister four years later with a similar presentation triggered review of the sisters’ visual behaviour. Each had developed an unusual but similar form of oculomotor apraxia (OMA) with head thrusts to maintain fixation rather than to change fixation. MRI of the older sibling demonstrated the characteristic “molar tooth sign” (MTS) of Joubert syndrome which was subsequently confirmed on MRI in the younger sibling. We discuss the genetically heterogeneous ciliopathies now grouped as Joubert syndrome and Related Disorders. Clinicians need to consider this group of disorders when faced with unusual eye movements in the developmentally delayed child.
Patient Retention in Antiretroviral Therapy Programs in Sub-Saharan Africa: A Systematic Review
Sydney Rosen ,Matthew P Fox,Christopher J Gill
PLOS Medicine , 2007, DOI: 10.1371/journal.pmed.0040298
Abstract: Background Long-term retention of patients in Africa's rapidly expanding antiretroviral therapy (ART) programs for HIV/AIDS is essential for these programs' success but has received relatively little attention. In this paper we present a systematic review of patient retention in ART programs in sub-Saharan Africa. Methods and Findings We searched Medline, other literature databases, conference abstracts, publications archives, and the “gray literature” (project reports available online) between 2000 and 2007 for reports on the proportion of adult patients retained (i.e., remaining in care and on ART) after 6 mo or longer in sub-Saharan African, non-research ART programs, with and without donor support. Estimated retention rates at 6, 12, and 24 mo were calculated and plotted for each program. Retention was also estimated using Kaplan-Meier curves. In sensitivity analyses we considered best-case, worst-case, and midpoint scenarios for retention at 2 y; the best-case scenario assumed no further attrition beyond that reported, while the worst-case scenario assumed that attrition would continue in a linear fashion. We reviewed 32 publications reporting on 33 patient cohorts (74,192 patients, 13 countries). For all studies, the weighted average follow-up period reported was 9.9 mo, after which 77.5% of patients were retained. Loss to follow-up and death accounted for 56% and 40% of attrition, respectively. Weighted mean retention rates as reported were 79.1%, 75.0% and 61.6 % at 6, 12, and 24 mo, respectively. Of those reporting 24 mo of follow-up, the best program retained 85% of patients and the worst retained 46%. Attrition was higher in studies with shorter reporting periods, leading to monthly weighted mean attrition rates of 3.3%/mo, 1.9%/mo, and 1.6%/month for studies reporting to 6, 12, and 24 months, respectively, and suggesting that overall patient retention may be overestimated in the published reports. In sensitivity analyses, estimated retention rates ranged from 24% in the worse case to 77% in the best case at the end of 2 y, with a plausible midpoint scenario of 50%. Conclusions Since the inception of large-scale ART access early in this decade, ART programs in Africa have retained about 60% of their patients at the end of 2 y. Loss to follow-up is the major cause of attrition, followed by death. Better patient tracing procedures, better understanding of loss to follow-up, and earlier initiation of ART to reduce mortality are needed if retention is to be improved. Retention varies widely across programs, and programs that have achieved higher
Quasisymmetry and rectifiability of quasispheres
Matthew Badger,James T. Gill,Steffen Rohde,Tatiana Toro
Mathematics , 2012, DOI: 10.1090/S0002-9947-2013-05926-0
Abstract: We obtain Dini conditions with "exponent 2" that guarantee that an asymptotically conformal quasisphere is rectifiable. In particular, we show that for any e>0 integrability of (esssup_{1-t < |x| < 1+t} K_f(x)-1)^{2-e} dt/t implies that the image of the unit sphere under a global quasiconformal homeomorphism f is rectifiable. We also establish estimates for the weak quasisymmetry constant of a global K-quasiconformal map in neighborhoods with maximal dilatation close to 1.
A Research on Eurozone Bond Market and Determinants of Sovereign Bond Yields  [PDF]
Navjeet Gill
Journal of Financial Risk Management (JFRM) , 2018, DOI: 10.4236/jfrm.2018.72012
Abstract: This empirical research uses an OLS regression framework to examine the effect of the overall debt crisis on European sovereign bonds by conducting an overview of the bond market. It identifies the determinants which affect the generation of the indebtedness of sovereign bonds and play a major role in the determination of their solvency and hence, the spreads. These results reveal that Interest Rate, Inflation, Debt to GDP, Deficit to GDP, Gross Domestic Product rate of growth, and VSTOXX index are the most significant determinants of the sovereign bond spreads in the 6 sample countries, i.e. France, Germany, United Kingdom, Greece, Italy and Spain. To summarize, the main factors which affected bond spreads before the crisis, were not the country-specific fundamentals but rather the convergence of bond yields in the euro-zone countries due to and following the launch of the monetary union but during the crisis, increased risk aversion and lack of lender of last resort, shifted the focus to country specific factors and the bond spreads began to diverge according to the determinants highlighted in this study.
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