Search results for "BD"

Weak regularity of functions and sets in Asplund spaces

2006

Abstract In this paper, we study a new concept of weak regularity of functions and sets in Asplund spaces. We show that this notion includes prox-regular functions, functions whose subdifferential is weakly submonotone and amenable functions in infinite dimension. We establish also that weak regularity is equivalent to Mordukhovich regularity in finite dimension. Finally, we give characterizations of the weak regularity of epi-Lipschitzian sets in terms of their local representations.

A Graph Based Algorithm For Intersection Of Subdivision Surfaces

2003

Computing surface intersections is a fundamental problem in geometric modeling. Any boolean operation can be seen as an intersection calculation followed by a selection of the parts necessary for building the surface of the resulting object. A robust and efficient algorithm to compute intersection on subdivision surfaces (surfaces generated by the Loop scheme) is proposed here. This algorithm relies on the concept of a bipartite graph which allows the reduction of the number of faces intersection tests. Intersection computations are accelerated by the use of the bipartite graph and the neighborhood of intersecting faces at a given level of subdivision to deduce intersecting faces at the fol…

Weighted-Power p Nonlinear Subdivision Schemes

2012

In this paper we present and analyze a generalization of the Powerp subdivision schemes proposed in [3,12]. The Weighted-Powerp schemes are based on a harmonic weighted version of the Power<emp average considered in [12], and their development is motivated by the desire to generalize the nonlinear analysis in [3,5] to interpolatory subdivision schemes with higher than second order accuracy.

Polynomial Smoothing Splines

2014

Interpolating splines is a perfect tool for approximation of a continuous-time signal \(f(t)\) in the case when samples \(x[k]=f(k),\;k\in \mathbb {Z}\) are available. However, frequently, the samples are corrupted by random noise. In such case, the so-called smoothing splines provide better approximation. In this chapter we describe periodic smoothing splines in one and two dimensions. The SHA technique provides explicit expression of such splines and enables us to derive optimal values of the regularization parameters.

Chromosomal and genetic changes produced in tumoral progression of embryonal rhabdomyosarcoma

2013

Dissecting Abdominal Aortic Aneurysm Is Aggravated by Genetic Inactivation of LIGHT (TNFSF14)

2021

Abdominal aortic aneurysm (AAA), is a complex disorder characterized by vascular vessel wall remodeling. LIGHT (TNFSF14) is a proinflammatory cytokine associated with vascular disease. In the present study, the impact of genetic inactivation of Light was investigated in dissecting AAA induced by angiotensin II (AngII) in the Apolipoprotein E-deficient (Apoe−/−) mice. Studies in aortic human (ah) vascular smooth muscle cells (VSMC) to study potential translation to human pathology were also performed. AngII-treated Apoe−/−Light−/− mice displayed increased abdominal aorta maximum diameter and AAA severity compared with Apoe−/− mice. Notably, reduced smooth muscle α-actin+ area and Acta2 and C…

Dolor abdominal crónico en la edad pediátrica: implicación de factores clínicos, ambientales y psicosociales. Desarrollo de un programa informático e…

2015

El dolor abdominal crónico (orgánico o funcional) es una causa frecuente de dolor en la infancia, suponiendo hasta el 25% de las derivaciones desde atención primaria a gastroenterología. Es un fenómeno complejo en el que intervienen factores biológicos, psicológicos y sociales en su cronificación. Por ello, el objetivo de este trabajo fue analizar los principales factores clínicos, ambientales y psicosociales relacionados con el DAC (dolor abdominal crónico) en escolares y adolescentes, en la consulta de gastroenterología infantil del Hospital Clínico Universitario de Valencia, así como, desarrollar un programa informático específico útil para el manejo de estos pacientes. Se diseñó un estu…

Biogenic amine levels, reproduction and social dominance in the queenless ant Streblognathus peetersi

2006

Social harmony often relies on ritualized dominance interactions between society members, particularly in queenless ant societies, where colony members do not have developmentally predetermined castes but have to fight for their status in the reproductive and work hierarchy. In this behavioural plasticity, their social organisation resembles more that of vertebrates than that of the "classic" social insects. The present study investigates the neurochemistry of the queenless ant species, Streblognathus peetersi, to better understand the neural basis of the high behavioural plasticity observed in queenless ants. We report measurements of brain biogenic amines [octopamine, dopamine, serotonin]…

The Dialectic Between Strength and Weakness in Dostoevsky (1860-1864). Ideology as Key for the Interpretation

2013

Los estudios críticos de la obra de Dostoievski evitan relacionarla con su ideología. El presente trabajo parte del supuesto de que la confrontación de la obra literaria con la ideología del autor puede proporcionar algunas claves decisivas para la comprensión de conceptos compartidos por ambos campos. Se ha analizado las categorías de fortaleza y debilidad, como nódulos importantes en la malla conceptual-imaginativa. El trabajo se limita a un periodo esencial de la obra de Dostoievski, 1860-1864, puesto que hay un consenso generalizado en que es clave para la evolución de su obra madura. Critical studies of Dostoevsky’s work usually avoid relating it to ideology. This essay assumes that th…

Syntheses and catalytic oxotransfer activities of oxo molybdenum(vi) complexes of a new aminoalcohol phenolate ligand.

2017

The new aminoalcohol phenol 2,4-di-tert-butyl-6-(((2-hydroxy-2-phenylethyl)amino)methyl)phenol (H2L) was prepared by a facile solvent-free synthesis and used as a tridentate ligand for new cis-dioxomolybdenum(vi)(L) complexes. In the presence of a coordinating solvent (DMSO, MeOH, pyridine), the complexes crystallise as monomeric solvent adducts while in the absence of such molecules, a trimer with asymmetric Mo[double bond, length as m-dash]O→Mo bridges crystallises. The complexes can catalyse epoxidation of cis-cyclooctene and sulfoxidation of methyl-p-tolylsulfide, using tert-butyl hydroperoxide as oxidant.