Now showing items 21-40 of 1172

• #### A Heuristically Optimized Complex Event Processing Engine for Big Data Stream Analytics ﻿

(Proceedings of the 3rd International Conference on Harmony Search Algorithm, ICHSA 2017, 2017)
This paper describes a Big Data stream analytics platform developed within the DEWI project for processing upcoming events from wireless sensors installed in a truck. The platform consists of a Complex Event Processing ...
• #### Quantitative Analysis and Performance Study of Ant Colony Optimization Models Applied to Multi-Mode Resource Constraint Project Scheduling Problem ﻿

(Future Generation Computer Systems, 2017)
Constraint Satisfaction Problems (CSP) belongs to this kind of traditional NP-hard problems with a high impact in both, research and industrial domains. However, due to the complexity that CSP problems exhibit, researchers ...
• #### A Novel Grouping Harmony Search Algorithm for Clustering Problems ﻿

(Advances in Intelligent Systems and Computing, 2017)
The problem of partitioning a data set into disjoint groups or clusters of related items plays a key role in data analytics, in particular when the information retrieval becomes crucial for further data analysis. In this ...
• #### Joint Feature Selection and Parameter Tuning for Short-term Traffic Flow Forecasting based on Heuristically Optimized Multi-layer Neural Networks ﻿

(Advances in Intelligent Systems and Computing, 2017)
Short-term traffic flow forecasting is a vibrant research topic that has been growing in interest since the late 70’s. In the last decade this vibrant field has shifted its focus towards machine learning methods. These ...
• #### A Feature Selection Method for Author Identification in Interactive Communications based on Supervised Learning and Language Typicality ﻿

(Engineering Applications of Artificial Intelligence, 2016)
Authorship attribution, conceived as the identification of the origin of a text be- tween different authors, has been a very active area of research in the scientific community mainly supported by advances in Natural ...
• #### The abel map for surface singularities II. Generic analytic structure ﻿

(Advances in Mathematics, 2019)
We study the analytic and topological invariants associated with complex normal surface singularities. Our goal is to provide topological formulae for several discrete analytic invariants whenever the analytic structure ...
• #### Reflection maps ﻿

(Mathematische Annalen, 2020)
Given a reflection group G acting on a complex vector space V , a reflection map is the composition of an embedding X → V with the quotient map V → Cp of G. We show how these maps, which can highly singular, may be studied ...
• #### Multilinear operator-valued calderón-zygmund theory ﻿

(Journal of Functional Analysis, 2020)
We develop a general theory of multilinear singular integrals with operator- valued kernels, acting on tuples of UMD Banach spaces. This, in particular, involves investigating multilinear variants of the R-boundedness ...
• #### Decomposition theorem and torus actions of complexity one ﻿

(European Journal of Mathematics, 2020)
We algorithmically compute the intersection cohomology Betti numbers of any complete normal algebraic variety with a torus action of complexity one.
• #### Invariant measures for the dnls equation ﻿

(Mathematics of Wave Phenomena, 2020-10-02)
We describe invariant measures associated to the integrals of motion of the periodic derivative nonlinear Schr\"odinger equation (DNLS) constructed in \cite{MR3518561, Genovese2018}. The construction works for small $L^2$ ...
• #### End-point estimates, extrapolation for multilinear muckenhoupt classes, and applications ﻿

(Trans. Amer. Math. Soc.2020, 2019)
In this paper we present the results announced in the recent work by the first, second, and fourth authors of the current paper concerning Rubio de Francia extrapolation for the so-called multilinear Muckenhoupt classes. ...
• #### Magnetic domain-twin boundary interactions in Ni-Mn-Ga ﻿

(Acta Materialia, 2020-04)
The stress required for the propagation of twin boundaries in a sample with fine twins increases monotonically with ongoing deformation. In contrast, for samples with a single twin boundary, the stress exhibits a plateau ...
• #### Sensitivity of twin boundary movement to sample orientation and magnetic field direction in Ni-Mn-Ga ﻿

(Acta Materialia, 2019)
When applying a magnetic field parallel or perpendicular to the long edge of a parallelepiped Ni- Mn-Ga stick, twin boundaries move instantaneously or gradullay through the sample. We evaluate the sample shape dependence ...
• #### The random diffusivity approach for diffusion in heterogeneous systems ﻿

(2020-12-16)
The two hallmark features of Brownian motion are the linear growth $\langle x^2(t) \rangle = 2 D d t$ of the mean squared displacement (MSD) with diffusion coefficient $D$ in $d$ spatial dimensions, and the Gaussian ...
• #### Generalized Poincaré-Sobolev inequalities ﻿

(2020-12)
Poincaré-Sobolev inequalities are very powerful tools in mathematical analysis which have been extensively used for the study of differential equations and their validity is intimately related with the geometry of the ...
• #### Finite Element simulations: computations and applications to aerodynamics and biomedicine ﻿

(2020-12-11)
Partial Differential Equations describe a large number of phenomena of practical interest and their solution usually requires running huge simulations on supercomputing clusters. Especially when dealing with turbulent ...
• #### Sensitivity and Uncertainty Analysis by Discontinuous Galerkin of Lock-in Thermography for Crack Characterization ﻿

(Computer Methods in Applied Mechanics and Engineering, 2020-09)
This work focuses on the characterization of narrow vertical cracks of nite size using optically excited lock-in thermography (OLT). To characterize these cracks, we need to solve an ill-posed inverse problem. As a previous ...
• #### Definition of tailor made cutting tools for machining of complex surfaces based on final surface shape ﻿

(Proceedings - 2nd International Conference on Mathematics and Computers in Science and Engineering, MACISE 2020, 2020)
In this work a design methodology to define the best geometry of cutting tool for complex surfaces is defined, being based on the final part surface geometry. The manufacture of components with tailor made shaped tools, ...
• #### Gut microbiota ecology: Biodiversity estimated from hybrid neutral-niche model increases with health status and aging ﻿

(Plos One, 2020-10-30)
In this work we propose an index to estimate the gut microbiota biodiversity using a modeling approach with the aim of describing its relationship with health and aging. The gut microbiota, a complex ecosystem that links ...
• #### Local Topological Obstruction For Divisors ﻿

(Revista Matematica Complutense, 2020)
Given a smooth, projective variety $X$ and an effective divisor $D\,\subseteq\, X$, it is well-known that the (topological) obstruction to the deformation of the fundamental class of $D$ as a Hodge class, lies in ...