Results 31 to 40 of about 45,262 (190)

On Degrees of Freedom of Projection Estimators with Applications to Multivariate Nonparametric Regression

open access: yes, 2018
In this paper, we consider the nonparametric regression problem with multivariate predictors. We provide a characterization of the degrees of freedom and divergence for estimators of the unknown regression function, which are obtained as outputs of ...
Chen, Xi, Lin, Qihang, Sen, Bodhisattva
core   +1 more source

Effects of ultra-purified polymerized bovine hemoglobin on local tissue oxygen tension in striated skin muscle - An efficacy study in the hamster [PDF]

open access: yes, 2002
The development of hemoglobin-based oxygen carriers has been propagated for replacement of the oxygen carrying properties of red blood cells for almost one century.
Botzlar, Andreas   +2 more
core   +1 more source

A quantum exactly solvable non-linear oscillator related with the isotonic oscillator

open access: yes, 2007
A nonpolynomial one-dimensional quantum potential representing an oscillator, that can be considered as placed in the middle between the harmonic oscillator and the isotonic oscillator (harmonic oscillator with a centripetal barrier), is studied.
A M Perelomov   +12 more
core   +1 more source

Confluent Chains of DBT: Enlarged Shape Invariance and New Orthogonal Polynomials [PDF]

open access: yes, 2015
We construct rational extensions of the Darboux-P\"oschl-Teller and isotonic potentials via two-step confluent Darboux transformations. The former are strictly isospectral to the initial potential, whereas the latter are only quasi-isospectral.
Grandati, Yves, Quesne, Christiane
core   +3 more sources

New quasi-exactly solvable class of generalized isotonic oscillators

open access: yes, 2014
We introduce a new family of quasi-exactly solvable generalized isotonic oscillators which are based on the pseudo-Hermite exceptional orthogonal polynomials.
Agboola, Davids   +3 more
core   +1 more source

An Ordered Lasso and Sparse Time-Lagged Regression

open access: yes, 2014
We consider regression scenarios where it is natural to impose an order constraint on the coefficients. We propose an order-constrained version of L1-regularized regression for this problem, and show how to solve it efficiently using the well-known Pool ...
Suo, Xiaotong, Tibshirani, Robert
core   +2 more sources

Closed N=2 Strings: Picture-Changing, Hidden Symmetries and SDG Hierarchy

open access: yes, 1999
We study the action of picture-changing and spectral flow operators on a ground ring of ghost number zero operators in the chiral BRST cohomology of the closed N=2 string and describe an infinite set of symmetry charges acting on physical states.
ALEXANDER D. POPOV   +2 more
core   +1 more source

Saturated locally optimal designs under differentiable optimality criteria [PDF]

open access: yes, 2014
We develop general theory for finding locally optimal designs in a class of single-covariate models under any differentiable optimality criterion. Yang and Stufken [Ann. Statist. 40 (2012) 1665-1681] and Dette and Schorning [Ann. Statist.
Hu, Linwei, Stufken, John, Yang, Min
core   +1 more source

Isotonic saline - the only solution to recommend? [PDF]

open access: yesCritical Care, 2011
Comment on "A balanced view of balanced solutions." by Guidet et al. Critical Care 2010;14:325.
openaire   +2 more sources

¿Sobreestimamos las necesidades de líquidos? Complicaciones del uso de sueros isotónicos de mantenimiento en plantas de hospitalización pediátrica

open access: yesNefrología, 2022
Resumen: Introducción: La fluidoterapia intravenosa es un tratamiento ampliamente utilizado en pacientes pediátricos hospitalizados. El objetivo del estudio fue analizar las complicaciones asociadas al uso de sueros isotónicos de mantenimiento en ...
Jimena Pérez-Moreno   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy