Search results for "Networks"
showing 10 items of 3260 documents
A Survey on Particle Swarm Optimization for Association Rule Mining
2022
Association rule mining (ARM) is one of the core techniques of data mining to discover potentially valuable association relationships from mixed datasets. In the current research, various heuristic algorithms have been introduced into ARM to address the high computation time of traditional ARM. Although a more detailed review of the heuristic algorithms based on ARM is available, this paper differs from the existing reviews in that we expected it to provide a more comprehensive and multi-faceted survey of emerging research, which could provide a reference for researchers in the field to help them understand the state-of-the-art PSO-based ARM algorithms. In this paper, we review the existing…
Nonlinear Robust Control of a Quadratic Boost Converter in a Wide Operation Range, Based on Extended Linearization Method
2022
This paper proposes a control system for a quadratic boost DC/DC converter in a wide range of operations, based on an inner loop with a sliding mode controller, for reaching a desired equilibrium state, and an outer loop with integral-type controller, for assuring robustness against load and input voltage variations and converter parameter uncertainties. The sliding mode controller is designed with the extended linearization method and assures local asymptotic stability, whereas the integral controller is designed using classical frequency methods, and assures input–output stability. It is shown that the proposed controller also deals with the sudden changes in the nominal operating conditi…
Methodology for Structured Data-Path Implementation in VLSI Physical Design: A Case Study
2022
State-of-the-art modern microprocessor and domain-specific accelerator designs are dominated by data-paths composed of regular structures, also known as bit-slices. Random logic placement and routing techniques may not result in an optimal layout for these data-path-dominated designs. As a result, implementation tools such as Cadence’s Innovus include a Structured Data-Path (SDP) feature that allows data-path placement to be completely customized by constraining the placement engine. A relative placement file is used to provide these constraints to the tool. However, the tool neither extracts nor automatically places the regular data-path structures. In other words, the relative placement f…
Implementation of algorithms forK shortest loopless paths
1986
Implementations of loopless k shortest path algorithms are examined. Efficient storage structures for a large number of paths are given. A fast algorithm for determining the shortest paths in Yen's method is developed. Timing experiments show that a hybrid of Clarke's and Yen's methods is generally the fastest, although not significantly. Using upper bounds for the lengths of paths essentially improves all methods.
Dualidad en la aljama. Propietarios de tierra y hombre de negocio musulmanes. El caso de la comarca valenciana de El Comtat (segunda mitad del siglo …
2014
El presente trabajo pretende estudiar las diferencias socioeconomicas que se generaron en el seno de las aljamas musulmanas valencianas durante el siglo XV. A diferencia de lo que frecuentemente ha mostrado la historiografia, las comunidades islamicas rurales no eran grupos homogeneos de campesinos sin tierras, sino que habia importantes jerarquias (diferencias) en su interior. Tomando como ejemplo el caso de la comarca de El Comtat, en la zona centro-sur del antiguo reino de Valencia, analizamos la dualidad social y economica de las aljamas a traves del estudio del mercado de la tierra y del mercado de productos agricolas. Todo ello nos permite descubrir una elite musulmana de propietarios…
Dipo : ciudad 'tartésico-turdetana' en el valle del Guadiana
2009
Los hallazgos de monedas de Dipo en el término de Guadajira, Badajoz, y el estudio territorial del Valle del Guadiana en época orientalizante han permitido localizar esta importante población de la antigua Lusitania. Su origen es una colonia tartésica, paralela y rival de Medellín-Conisturgis, pues ambas controlaban dos ramales paralelos de la 'Via de la Plata ' y la vía de Olisipo a Oretum, que unía todas las colonias periféricas del mundo tartesio septentrional.
An empirical evaluation of two natural hand interaction systems in augmented reality
2022
AbstractHuman-computer interaction based on hand gesture tracking is not uncommon in Augmented Reality. In fact, the most recent optical Augmented Reality devices include this type of natural interaction. However, due to hardware and system limitations, these devices, more often than not, settle for semi-natural interaction techniques, which may not always be appropriate for some of the tasks needed in Augmented Reality applications. For this reason, we compare two different optical Augmented Reality setups equipped with hand tracking. The first one is based on a Microsoft HoloLens (released in 2016) and the other one is based on a Magic Leap One (released more than two years later). Both d…
Perceptual adaptive insensitivity for support vector machine image coding.
2005
Support vector machine (SVM) learning has been recently proposed for image compression in the frequency domain using a constant epsilon-insensitivity zone by Robinson and Kecman. However, according to the statistical properties of natural images and the properties of human perception, a constant insensitivity makes sense in the spatial domain but it is certainly not a good option in a frequency domain. In fact, in their approach, they made a fixed low-pass assumption as the number of discrete cosine transform (DCT) coefficients to be used in the training was limited. This paper extends the work of Robinson and Kecman by proposing the use of adaptive insensitivity SVMs [2] for image coding u…
Los Estereotipos de género en las producciones audiovisuales: diseño y validación de la tabla de análisis EG_5x4
2022
Los productos culturales de la educación no formal, y en concreto los difundidos por televisión y plataformas streaming, incluidas no ficción y animación infantil, proponen entre sus figuraciones personajes estereotipados en su construcción de género. Según investigaciones previas, identificarlos y combatirlos favorece la erradicación de ideas sexistas relacionadas con violencias machistas. Por ello, el objetivo que se planteó fue diseñar y validar una tabla de análisis de estereotipos sexuales presentes en cualquier producto audiovisual. El proceso siguió un protocolo de 3 fases (Garrido et al., 2015): 1) Se revisó la literatura publicada, se extrajeron rasgos relacionados con estereotipos…
Vox and journalistic information: use and criticism of the media in the 2019 General Election campaigns
2022
The general elections held in 2019 gave Vox enough votes to enter the Spanish Parliament as the third most popular political party. The growing role of this radical right-wing party has revealed a complex relationship with the media. The objective of this study is to characterise the relationship between Vox and the media by analysing the party's electoral discourse using quantitative techniques – posts made on Facebook and Twitter (n = 224) – and qualitative techniques, exploring the framing used in the closing rallies of the campaign. References to the media dominated the messages Vox posted on Twitter during the November campaign, whose main purpose was to repost content previously broad…