Results 11 to 20 of about 514,152 (162)

Long-term prognostic implications of type 2 diabetes mellitus in colorectal cancer patients. [PDF]

open access: yesColorectal Dis
Abstract Aim Colorectal cancer (CRC) is one of the most prevalent cancers worldwide. Epidemiological evidence has identified Type 2 Diabetes Mellitus (T2DM) as a risk factor for CRC. This study aimed to evaluate the impact of T2DM, along with clinicopathological and socio‐demographic factors, on long‐term overall survival in a large, nationally ...
Alcaide-Garcia J   +14 more
europepmc   +2 more sources

On the Application of the Generalized Means to Construct Multiresolution Schemes Satisfying Certain Inequalities Proving Stability

open access: yesMathematics, 2021
Multiresolution representations of data are known to be powerful tools in data analysis and processing, and they are particularly interesting for data compression.
Sergio Amat   +4 more
doaj   +1 more source

On New Means with Interesting Practical Applications: Generalized Power Means

open access: yesMathematics, 2021
Means of positive numbers appear in many applications and have been a traditional matter of study. In this work, we focus on defining a new mean of two positive values with some properties which are essential in applications, ranging from subdivision and
Sergio Amat   +4 more
doaj   +1 more source

Reducing Chaos and Bifurcations in Newton-Type Methods

open access: yesAbstract and Applied Analysis, 2013
We study the dynamics of some Newton-type iterative methods when they are applied of polynomials degrees two and three. The methods are free of high-order derivatives which are the main limitation of the classical high-order iterative schemes.
S. Amat, S. Busquier, Á. A. Magreñán
doaj   +1 more source

Using Permutations for Hierarchical Clustering of Time Series

open access: yesEntropy, 2019
Two distances based on permutations are considered to measure the similarity of two time series according to their strength of dependency. The distance measures are used together with different linkages to get hierarchical clustering methods of time ...
Jose S. Cánovas   +2 more
doaj   +1 more source

On certain inequalities associated to curvature properties of the nonlinear PPH reconstruction operator

open access: yesJournal of Inequalities and Applications, 2019
In this paper we study the curvature term for the Lagrange and PPH (Amat et al. in Found. Comput. Math. 6:193–225, 2006 and Ortiz and Trillo in Preprint, arXiv:1811.10566, 2018) reconstruction operators in uniform and nonuniform meshes.
J. C. Trillo, P. Ortiz
doaj   +1 more source

La enseñanza de Estadística en Ingeniería de Telecomunicaciones [PDF]

open access: yes, 1999
En los últimos años se ha dado un espectacular incremento en la preocupación social por los problemas relacionados con la calidad de los servicios, y en particular, de la enseñanza universitaria.
Aparicio, Felipe M.
core   +1 more source

Parameters and fractional factors in different settings

open access: yesJournal of Inequalities and Applications, 2019
In computer networks, the feasibility of data transmission can be measured in terms of fractional factor model, and specifically the framework of fractional critical deleted graph can express the setting when certain sites and channels are unavailable at
Wei Gao, Juan L. G. Guirao
doaj   +1 more source

Collocation Methods for High-Order Well-Balanced Methods for Systems of Balance Laws

open access: yesMathematics, 2021
In some previous works, two of the authors introduced a technique to design high-order numerical methods for one-dimensional balance laws that preserve all their stationary solutions. The basis of these methods is a well-balanced reconstruction operator.
Irene Gómez-Bueno   +3 more
doaj   +1 more source

On a Family of High-Order Iterative Methods under Kantorovich Conditions and Some Applications

open access: yesAbstract and Applied Analysis, 2012
This paper is devoted to the study of a class of high-order iterative methods for nonlinear equations on Banach spaces. An analysis of the convergence under Kantorovich-type conditions is proposed.
S. Amat   +4 more
doaj   +1 more source

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