120,980 research outputs found

    Segmentation in Markov chain consumer behaviour models

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    Contents * A: Historical development of credit and behavioural scoring * R W Johnson: Legal, social and economic issues in implementing scoring in the US * R Eisenbeis: Problems in applying discriminant analysis in credit scoring models * M A Hopper and E M Lewis: Behaviour scoring and adaptive control systems * B: Objectives and measures in credit scoring * A D Wilkie: Measures for comparing scoring systems * G Wilkinson and J Tingay: The use of affordability data - does it add real value? * R L Keeney and R M Oliver: Improving lender offers using consumer preferences * C: Practical implementation of scoring systems * A Lucas: Updating scorecards: Removing the mystique * R M Oliver and E Wells: Efficient frontier cut-off policies in credit portfolios * D: Features of scoring * D J Hand and W E Henley: Can reject inference ever work? * G A Overstreet Jr, E L Bradley, and R S Kemp Jr: The flat-maximum effect and generic linear scoring models: a test * J N Crook, L C Thomas, and R Hamilton: The degradation of the scorecard over the business cycle * G Bennett, G Platts, and J Crossley: Inferring the inferred * E: Other applications of scoring in credit risk * K J Leonard: Detecting credit card fraud using expert systems * G Platts and I Howe: A single European scorecard * A Lucas and J Powell: Small sample scoring * F: Alternative approaches to scoring systems * B Narain: Survival analysis and the credit granting decision * P Sewart and J Whittaker: Graphical models in credit scoring * M B Yobas, J N Crook, and P Ross: Credit scoring using neural and evolutionary techniques * J Ho, L C Thomas, T A Pomrey, and W T Scherer: Segmenting in Markov chain consumer credit behaviour model

    The 1961 Kampong Bukit Ho Swee fire and the making of modern Singapore

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    By 1970, Singapore’s urban landscape was dominated by high-rise blocks of planned public housing built by the People’s Action Party government, signifying the establishment of a high modernist nation-state. A decade earlier, the margins of the City had been dominated by kampongs, home to semi-autonomous communities of low-income Chinese families which freely built, and rebuilt, unauthorised wooden houses. This change was not merely one of housing but belied a more fundamental realignment of state-society relations in the 1960s. Relocated in Housing and Development Board flats, urban kampong families were progressively integrated into the social fabric of the emergent nation-state. This study examines the pivotal role of an event, the great Kampong Bukit Ho Swee fire of 1961, in bringing about this transformation. The redevelopment of the fire site in the aftermath of the calamity brought to completion the British colonial regime’s ‘emergency’ programmes of resettling urban kampong dwellers in planned accommodation, in particular, of building emergency public housing on the sites of major fires in the 1950s. The PAP’s far greater political resolve, and the timing of and state of emergency occasioned by the scale of the 1961 disaster, enabled the government to rehouse the Bukit Ho Swee fire victims in emergency housing in record time. This in turn provided the HDB with a strategic platform for clearing other kampongs and for transforming their residents into model citizens of the nation-state. The 1961 fire’s symbolic usefulness extended into the 1980s and beyond, in sanctioning the PAP’s new housing redevelopment schemes. The official account of the inferno has also become politically useful for the government of today for disciplining a new generation of Singaporeans against taking the nation’s progress for granted. Against these exalted claims of the fire’s role in the Singapore Story, this study also examines the degree of actual change and continuity in the social and economic lives of the people of Bukit Ho Swee after the inferno. In some crucial ways, the residents continued to occupy a marginal place in society while pondering, too, over the unresolved question of the cause of the fire. These continuities of everyday life reflect the ambivalence with which the citizenry regarded the high modernist state in contemporary Singapore

    Study of Ho-doped Bi2Te3 topological insulator thin films

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    This publication arises from research funded by the John Fell Oxford University Press (OUP) Research Fund and the Research Complex at Harwell is acknowledged for their hospitality. This work was supported by a DARPA MESO project (No. N66001-11-1-4105). S.E.H. was supported by the VPGE (Stanford University). L.C.M. and A.A.B. acknowledge partial financial support from EPSRC (UK) through a Doctoral Training Award. Diamond Light Source is acknowledged for beamtime on I10 (proposal SI10207).Breaking time-reversal symmetry through magnetic doping of topological insulators has been identified as a key strategy for unlocking exotic physical states. Here, we report the growth of Bi2Te3 thin films doped with the highest magnetic moment element Ho. Diffraction studies demonstrate high quality films for up to 21% Ho incorporation. Superconducting quantum interference device magnetometry reveals paramagnetism down to 2 K with an effective magnetic moment of ∼5 μB/Ho. Angle-resolved photoemission spectroscopy shows that the topological surface state remains intact with Ho doping, consistent with the material's paramagnetic state. The large saturation moment achieved makes these films useful for incorporation into heterostructures, whereby magnetic order can be introduced via interfacial coupling.Peer reviewe

    HMOX1 gene promoter alleles and high HO-1 levels are associated with severe malaria in Gambian children.

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    Heme oxygenase 1 (HO-1) is an essential enzyme induced by heme and multiple stimuli associated with critical illness. In humans, polymorphisms in the HMOX1 gene promoter may influence the magnitude of HO-1 expression. In many diseases including murine malaria, HO-1 induction produces protective anti-inflammatory effects, but observations from patients suggest these may be limited to a narrow range of HO-1 induction, prompting us to investigate the role of HO-1 in malaria infection. In 307 Gambian children with either severe or uncomplicated P. falciparum malaria, we characterized the associations of HMOX1 promoter polymorphisms, HMOX1 mRNA inducibility, HO-1 protein levels in leucocytes (flow cytometry), and plasma (ELISA) with disease severity. The (GT)(n) repeat polymorphism in the HMOX1 promoter was associated with HMOX1 mRNA expression in white blood cells in vitro, and with severe disease and death, while high HO-1 levels were associated with severe disease. Neutrophils were the main HO-1-expressing cells in peripheral blood, and HMOX1 mRNA expression was upregulated by heme-moieties of lysed erythrocytes. We provide mechanistic evidence that induction of HMOX1 expression in neutrophils potentiates the respiratory burst, and propose this may be part of the causal pathway explaining the association between short (GT)(n) repeats and increased disease severity in malaria and other critical illnesses. Our findings suggest a genetic predisposition to higher levels of HO-1 is associated with severe illness, and enhances the neutrophil burst leading to oxidative damage of endothelial cells. These add important information to the discussion about possible therapeutic manipulation of HO-1 in critically ill patients

    HIV and tuberculosis in Ho Chi Minh City, Vietnam, 1997-2002.

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    In Ho Chi Minh City, Vietnam, reporting rates for tuberculosis (TB) are rising in an emerging HIV epidemic. To describe the HIV epidemic among TB patients and quantify its impact on rates of reported TB, we performed a repeated cross-sectional survey from 1997 through 2002 in a randomly selected sample of inner city TB patients. We assessed effect by adjusting TB case reporting rates by the fraction of TB cases attributable to HIV infection. HIV prevalence in TB patients rose exponentially from 1.5% to 9.0% during the study period. Young (<35 years), single, male patients were mostly affected; injection drug use was a potent risk factor. After correction for HIV infection, the trend in TB reporting rates changed from a 1.9% increase to a 0.4% decrease per year. An emerging HIV epidemic, concentrated in young, male, injection drug users, is responsible for increased TB reporting rates in urban Vietnam

    Study on 2.0 mu m fluorescence of Ho-doped water-free fluorotellurite glasses

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    Ho(3+-)doped water-free fluorotellurite glasses with composition of 60TeO(2)-30ZnF(2)-10NaF (mol%, TZNF60) were made by using specially-designed physical and chemical dehydration technique. 2.04 mu m fluorescence (Ho3+: I-5(7) -&gt; I-5(8)) was observed experimentally and presented in this paper: A broad bandwidth of similar to 149 nm, large simulated emission cross-section of 7.2 x 10(-21) cm(2), and the longest reported fluorescence lifetime of similar to 10 ms among all the reported Ho3+-doped oxide glasses. Thanks to the absence of OH groups and low phonon energy with the addition fluorides into tellurite oxide glasses, 1.00Ho-TZNF60 glass demonstrates the maximum figure of merit (sigma(em) x tau(f)) of 7.13 x 10(-27) m(2) s, thus regarded as a promising optical material for the development of 2.0 mu m fiber lasers. (C) 2013 Elsevier B.V. All rights reserved

    Cooling rates of neutron stars and the young neutron star in the Cassiopeia A supernova remnant

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    We explore the thermal state of the neutron star in the Cassiopeia A supernova remnant using the recent result of Ho &amp; Heinke that the thermal radiation of this star is well described by a carbon atmosphere model and the emission comes from the entire stellar surface. Starting from neutron star cooling theory, we formulate a robust method to extract neutrino cooling rates of thermally relaxed stars at the neutrino cooling stage from observations of thermal surface radiation. We show how to compare these rates with the rates of standard candles – stars with non-superfluid nucleon cores cooling slowly via the modified Urca process. We find that the internal temperature of standard candles is a well-defined function of the stellar compactness parameter x=rg/R, irrespective of the equation of state of neutron star matter (R and rg are circumferential and gravitational radii, respectively). We demonstrate that the data on the Cassiopeia A neutron star can be explained in terms of three parameters: f?, the neutrino cooling efficiency with respect to the standard candle; the compactness x; and the amount of light elements in the heat-blanketing envelope. For an ordinary (iron) heat-blanketing envelope or a low-mass (? 10?13 M?) carbon envelope, we find the efficiency f?? 1 (standard cooling) for x? 0.5 and f?? 0.02 (slower cooling) for a maximum compactness x? 0.7. A heat blanket containing the maximum mass (?10?8 M?) of light elements increases f? by a factor of 50. We also examine the (unlikely) possibility that the star is still thermally non-relaxe

    Portrait of Professor Ho J. Paik, 1992

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    Ho J. Paik's Portrait, 199

    FROM PHILOSOPHY TO HO CHI MINH'S IDEOLOGY

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    Abstract: The article points out that Ho Chi Minh is a typical philosopher whose core is political philosophy, thereby clarifying Ho Chi Minh’s ideology and practicing Ho Chi Minh’s ideology in Vietnam. Keywords: Philosophy, ideology, Ho Chi Minh. Title: FROM PHILOSOPHY TO HO CHI MINH’S IDEOLOGY Author: Dr. Nguyen Thi Hong Hai International Journal of Social Science and Humanities Research ISSN 2348-3156 (Print), ISSN 2348-3164 (online) Vol. 11, Issue 2, April 2023 - June 2023 Page No: 121-126 Research Publish Journals Website: www.researchpublish.com Published Date: 25-April-2023 DOI: https://doi.org/10.5281/zenodo.7861846 Paper Download Link (Source) https://www.researchpublish.com/papers/from-philosophy-to-ho-chi-minhs-ideologyInternational Journal of Social Science and Humanities Research, ISSN 2348-3156 (Print), ISSN 2348-3164 (online), Research Publish Journals, Website: www.researchpublish.co
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