OBJECTIVE To evaluate and correlate the quality of life (QoL) of COPD patients on long-term home oxygen therapy (LTOT) with their sociodemographic/clinical characteristics and level of dependence. METHODS This was a cross-sectional analytical study involving COPD patients on LTOT followed at the Oxygen Therapy Outpatient Clinic of the Federal University of São Paulo Hospital São Paulo, in the...

This note shows that a certain toric quotient of the quintic Calabi–Yau threefold in P provides a counterexample to a recent conjecture of Cox and Katz concerning nef cones of toric hypersurfaces.

We first explore methods for approximating the commute time and Katz score between a pair of nodes. These methods are based on the approach of matrices, moments, and quadrature developed in the numerical linear algebra community. They rely on the Lanczos process and provide upper and lower bounds on an estimate of the pair-wise scores. We also explore methods to approximate the commute times an...

We evaluated a commercial point-of-care circulating cathodic antigen (POC-CCA) test for assessing Schistosoma mansoni infection prevalence in areas at risk. Overall, 4,405 school-age children in Cameroon, Côte d'Ivoire, Ethiopia, Kenya, and Uganda provided urine for POC-CCA testing and stool for Kato-Katz assays. By latent class analysis, one POC-CCA test was more sensitive (86% versus 62%) but...

Rita F. Redberg, MD Mitchell H. Katz, MD Author Affiliations: Division of Cardiology, University of California, San Francisco (Dr Redberg; [email protected]); and Department of Health Services, County of Los Angeles, Los Angeles, California (Dr Katz). Dr Redberg is the Editor and Dr Katz is the Deputy Editor of the Archives of Internal Medicine. Conflict of Interest Disclosures: The aut...

We showed previously a zero-knowledge proof system for 3-colorability. Unfortunately, to achieve negligible soundness error while maintaining zero knowledge it was required to repeat the basic, 3-round protocol sequentially polynomially-many times (giving a protocol with polynomial round complexity). Here, we show a constant-round zero-knowledge proof system for NP . We will also discuss the no...

In this paper, a new method is proposed to improve the canonical Katz back-off smoothing technique in language modeling. The process of Katz smoothing is detailedly analyzed and the global discounting parameters are selected for discounting. Further more, a modified version of the formula for discounting parameters is proposed, in which the discounting parameters are determined by not only the ...

Objective. The aim of this study was to evaluate the operational characteristics (sensitivity and negative predictive value (NPV)) of wet mount, formol-ether concentration (FEC), and Kato-Katz techniques for the determination of intestinal parasitic infections. Method. A total of 354 faecal specimens were collected from students in Northwest Ethiopia and screened with Kato-Katz, wet mount, and ...

OBJECTIVES This study evaluates the diagnostic accuracy and cost-effectiveness of the Kato-Katz and Mini-FLOTAC methods for detection of soil-transmitted helminths (STH) in a post-treatment setting in western Kenya. A cost analysis also explores the cost implications of collecting samples during school surveys when compared to household surveys. METHODS Stool samples were collected from child...