Exploració per tema "Topology"
Ara es mostren els items 1-20 de 135
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3D structure of a Brucella melitensis porin: molecular modelling in lipid membranes
(2018-01-01)
Article
Accés obertBrucella melitensis is a pathogenic bacterium responsible for brucellosis in mammals and humans. Its outer membrane proteins (Omp) control the diffusion of solutes through the membrane, and they consequently have a crucial ... -
A consistent approximation of the total perimeter functional for topology optimization algorithms
(2022-02-24)
Article
Accés obertThis article revolves around the total perimeter functional, one particular version of the perimeter of a shape O contained in a fixed computational domain D measuring the total area of its boundary ¿O, as opposed to its ... -
A distributed, parallel, and generic virtual network embedding framework
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialOne of the main challenges of network virtualization is the mapping of virtual network demands to physical network resources, commonly known as the virtual network embedding (VNE) problem. This paper introduces DPVNE, a ... -
A geometric approach to dense Cayley digraphs of finite Abelian groups
(2016)
Article
Accés obertWe give a method for constructing infinite families of dense (or eventually likely dense) Cayley digraphs of finite Abelian groups. The diameter of the digraphs is obtained by means of the related minimum distance diagrams. ... -
A multilevel active-clamped converter topology—Operating principle
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
Article
Accés restringit per política de l'editorialThis paper presents a novel multilevel activeclamped converter topology, which is an extension to m levels of the three-level active neutral-point-clamped topology. The operating principle is established through the ... -
A new method for ionospheric tomography and its assessment by ionosonde electron density, GPS TEC, and single-frequency PPP
(Institute of Electrical and Electronics Engineers (IEEE), 2019-01-05)
Article
Accés obertA new tomographic method was developed with the main goal of mapping the ionosphere in the region of Brazil. The ionospheric background was estimated based on ionosonde and radio-occultation measurements to overcome the ... -
A note on the periodic orbits and topological entropy of graph maps
(2000)
Article
Accés obertThis paper deals with the relationship between the periodic orbits of continuous maps on graphs and the topological entropy of the map. We show that the topological entropy of a graph map can be approximated by the entropy ... -
A simheuristic algorithm for service placement in community networks
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertThe growing demand for network connectivity has boosted the number of community networks (CNs). CNs are decentralized and self-organized communication networks owned and managed at the edge by volunteers. Due to the ... -
A simulation system for WSNs as a digital eco-system approach considering goodput metric
(Institute of Electrical and Electronics Engineers (IEEE), 2010)
Text en actes de congrés
Accés obertSensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. The sensors themselves ... -
Acoustic wave transversal filter for 5G N77 band
(Institute of Electrical and Electronics Engineers (IEEE), 2021-10-01)
Article
Accés obertThis work presents the complete synthesis procedure and circuit transformations needed to go from the characteristic polynomials to the transversal network formed by electroacoustic resonators. This filter topology allows ... -
Active redundant submodule configuration in modular multilevel converters
(2013-09)
Article
Accés restringit per política de l'editorialThe modular multilevel converter (MMC) is based on the cascaded connection of identical submodules (SMs) enabling additional redundancies. This paper proposes the configuration of the MMC topology with redundant SMs and ... -
Analysis and simulation of optical switches for intra-datacenter networks
(Universitat Politècnica de Catalunya, 2018-06)
Treball Final de Grau
Accés obertEste proyecto consiste en realizar un estudio de factibilidad para las interconexiones dentro de un centro de datos. Hay tantos diseños de arquitectura de una red de centro de datos (DCN), que es uno de los más básicos y ... -
Aplicació del mètode les asímptotes movibles (MMA)
(Universitat Politècnica de Catalunya, 2013-10-28)
Treball Final de Grau
Accés obertApplication of the Method of Moving Asymptotes The Method of Moving Asymptotes (MMA) has been revealed as a useful tool for solving approaches that appear in the field of topological optimization. In structural problems, ... -
Are space-filling curves efficient small antennas?
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-09-30)
Article
Accés obertThe performance of space-filling curves used as small antennas is evaluated in terms of quality factor and radiation efficiency. The influence of their topology is also considered. Although the potential use of these ... -
Axiomatic definition of the topological entropy on the interval
(2000)
Article
Accés obertSummary. The aim of this paper is to give an axiomatic definition of the topological entropy for continuous interval maps and, in such a way, to shed some more light on the importance of the different properties of the ... -
Bandwidth-Enhancement gm-C Filter with Independent wo and Q Tuning Mechanisms in Both Topology and Control Loops
(2010-06)
Text en actes de congrés
Accés obertThis paper deals with the proposal of a new topology for a gm-C continuous time filter which allows the adjustment and tuning of its characteristic parameters (ωO and Q) in an independent way (without cross-tuning), thereby ... -
Beyond the star of stars: An introduction to multihop and mesh for LoRa and LoRaWAN
(2021-04)
Article
Accés obertLoRa has emerged in recent years as a wireless technology providing long-range communication for low-power Internet-of-Things (IoT) devices. The LoRaWAN architecture adds the medium access control (MAC) and application ... -
Big data analytics for the virtual network topology reconfiguration use case
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialABNO's OAM Handler is extended with big data analytics capabilities to anticipate traffic changes in volume and direction. Predicted traffic is used to trigger virtual network topology re-optimization. When the virtual ... -
Bounds of the sum of edge lengths in linear arrangements of trees
(Institute of Physics (IOP), 2021-02-11)
Article
Accés obertA fundamental problem in network science is the normalization of the topological or physical distance between vertices, which requires understanding the range of variation of the unnormalized distances. Here we investigate ... -
Chromatic monitoring of gear mechanical degradation based on acoustic emission
(Institute of Electrical and Electronics Engineers (IEEE), 2017-11-01)
Article
Accés obertThis paper presents a methodology for the feature estimation of a new fault indicator focused on detecting gear mechanical degradation under different operating conditions. Preprocessing of acoustic emission signal is ...