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Scaling of proposals for Metropolis algorithms is an important practical problem in MCMC implementation. Criteria for scaling based on empirical acceptance rates of algorithms have been found to work consistently well across a broad range of problems. Essentially, proposal jump sizes are increased when acceptance rates are high and decreased when rates are(More)
—Africa is the single largest continental source of bio-mass burning emissions and one where emission source strengths are characterized by strong diurnal and seasonal cycles. This paper describes the development of a fire detection and character-to 50% due to the nondetection of many low-intensity fire pixels (FRP < 50 MW). Frequency-magnitude analysis can(More)
Satellite-based remote sensing of active fires is the only practical way to consistently and continuously monitor diurnal fluctuations in biomass burning from regional, to continental, to global scales. Failure to understand, quantify, and communicate the performance of an active fire detection algorithm, however, can lead to improper interpretations of the(More)
Biomass burning is a key Earth system process, a major element of the terrestrial carbon cycle and a significant source of atmospheric trace gases and aerosols. Africa is the single largest continental source of biomass burning emissions and fire in Africa is characterized by strong diurnal and seasonal variability. An analysis of one year of METEOSAT(More)
BACKGROUND Cystatin C (CysC) is an endogenous marker of glomerular filtration rate (GFR) that is claimed to be unaffected by body composition. In this study, we tested this speculation. METHODS In 77 patients with chronic kidney disease (mean age, 65.1 +/- 11.9 [SD] years; mean indexed GFR, 45.7 +/- 28.6 mL/min/1.73 m(2) [0.76 +/- 0.48 mL/s]), we(More)
Although scientific advances have recognised the prognostic power of telomerase activity in different cancers, as yet there has been no investigation regarding the expression variation of telomerase subunits in glioma tissues and cell lines. In this study, a recurrent anaplastic ependymoma and seven glioblastoma biopsy samples, four cell lines and four(More)
Spindle cell oncocytoma (SCO) is a rare non-functioning tumour of the pituitary which has just been formally recognized as a distinct entity by the 2007 WHO classification of brain tumours. We report a case of SCO who presented with symptoms of visual blurring, weight loss, intermittent vomiting and excessive tiredness of several months duration.(More)