Title: Special issue on power amplifier linearization
Authors: Wood, John; Bertran Albertí, Eduardo
Title: Compressive sensing for through wall radar imaging of stationary scenes using arbitrary data measurements
Authors: Lagunas Targarona, Eva; G. Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat
Abstract: In this paper, we deal with removal of wall EM reflections prior to image reconstruction using step-frequency radars. The goal is to enable behind-the-wall target detection and localization from reduced data measurements. In the underlying problem, few frequency observations are available and they differ from one antenna position to another in a SAR imaging system.
Because of using a different set of frequencies for different antennas, direct applications of wall clutter mitigation methods, such as subspace and spatial filtering, prove ineffective. To provide these methods with the response measured at the same set of frequencies, a compressive sensing approach is used to reconstruct the range profiles. We use prior knowledge of the wall
standoff distance to speed up the convergence of the Orthogonal Matching Pursuit for sparse data reconstruction.
Title: Ranking and selection of unsupervised learning marketing segmentation
Authors: Sanchez Hernandez, German; Chiclana, Francisco; Agell Jané, Núria; Aguado Chao, Juan Carlos
Abstract: This paper addresses the problem of choosing the most appropriate classification from a given set of classifications of a set of patterns. This is a relevant topic on unsupervised systems and clustering analysis because different classifications can in general be obtained from the same data set. The provided methodology is based on five fuzzy criteria which are aggregated using an Ordered Weighted Averaging (OWA) operator. To this end, a novel multi-criteria decision making (MCDM) system is defined, which assesses the degree up to which each criterion is met by all classifications. The corresponding single evaluations are then proposed to be aggregated into a collective one by means of an OWA operator guided by a fuzzy linguistic quantifier, which is used to implement the concept of fuzzy majority in the selection process. This new methodology is applied to a real marketing case based on a business to business (B2B) environment to help marketing experts during the segmentation process. As a result, a segmentation containing three segments consisting of 35, 98 and 127 points of sale respectively is selected to be the most suitable to endorse marketing strategies of the firm. Finally, an analysis of the managerial implications of the proposed methodology solution is provided.
Title: Airborne wind retrieval using GPS delay-Doppler maps
Authors: Zavorotny, Valery; Rodríguez, Nereida; Akos, D.M.; Camps Carmona, Adriano José
Abstract: Global Navigation Satellite System Reflectometry (GNSSR)
has emerged recently as a promising remote sensing tool
to retrieve various geophysical parameters of Earth’s
surface. GNSS-reflected signals, after being received and
processed by the airborne or space-borne receiver, are
available as delay correlation waveforms or as delay-
Doppler maps. In the case of a rough ocean surface, those
characteristics can be related to the RMS of L-band limited
slopes of the surface waves, and from there to the surface
wind speed. The raw GNSS-reflected signal can be
processed either in real time by the receiver, or can be
recorded and stored onboard and post-processed in a
laboratory. The latter approach leveraging a software
receiver allows more flexibility while processing the raw
data. This work analyzes Delay Doppler Maps (DDM)
obtained as a result of processing of the data collected by the
GPS data logger/software receiver onboard the NOAA
Gulfstream-IV jet aircraft. Thereafter, the DDMs were used
to retrieve surface wind speed employing several different
metrics that characterize the DDM extent in the Doppler
frequency-delay domain. In contrast to previous works in
which winds have been retrieved by fitting the theoretically
modeled curves into measured correlation waveforms, here
we do not rely on any model for the determination. Instead,
the approach is based on a linear regression between DDMs
observables and the wind speeds obtained in simultaneous
GPS dropsonde measurements.
Title: Spatial noise reduction in broad area semiconductors
Authors: Herrero Simon, Ramon; Botey Cumella, Muriel; Pradeep Kumar, Nikhil; Staliunas, Kestutis
Title: Socially-aware emergent narrative
Authors: Álvarez Napagao, Sergio; Gómez Sebastià, Ignasi; Panagiotidi, Sofia; Tejeda Gómez, José Arturo; Oliva Felipe, Luis Javier; Vázquez Salceda, Javier
Abstract: In agent research, emergent narrative aims for practical solutions to the narrative paradox problem in both drama and interactive scenarios. At the same time, organisational frameworks can be used in games to provide flexibility, adaptiveness, or social-awareness. In this paper, we propose an extension of our cOncienS framework to support emergent narrative in games with two objectives: 1) provide social-awareness in emergent narrative by means of an organisational model, and 2) create convincing dynamic and flexible storytelling in games.
Title: High-speed debris-flows generating 2D impulse waves: Experimental analysis
Authors: Bregoli, Francesco; Bateman Pinzón, Allen; Medina Iglesias, Vicente César de
Abstract: When a landslide or a debris-flow falls in a water body, a big wave, known as impulse wave or
landslide tsunami wave, can be generated. That phenomenon can be highly destructive and unlikely predicted,
involving dams and shorelines. Disastrous past events have been extensively analyzed and experimental studies have been carried out by different authors, but do not fully account for the description of the phenomenon. In the present study we introduce a new experimental set up installed in the fluvial-morphodynamic laboratory of the GITS team in the Technical University of Catalonia. The experimental device consists of a wheeled box
sliding on a steep slope flume, releasing granular material, which enters a 2D basin. Defining a set of governing parameters and after several run of experiment, a description of the behavior of the waves was attempted. First results are here presented and analyzed.
Title: Modelling a linguistic variable as a hierarchical family of partitions induced by an indistinguishability operator
Authors: Soto, De A R; Recasens Ferrés, Jorge
Abstract: This work shows a method to obtain a hierarchy of partitions on the universe [0,1] in such a way that each of them is compatible with a refinement of Lukasiewicz indistinguishability operator. The classes of the partition at a given level present a relation of antonymy between them. Moreover, the partition at a certain level can be seen as the refinement of a previous level by means of a class of linguistic modifiers. Due to this fact, they seem appropriate for modeling linguistic labels of a linguistic variable. The associated indistinguishability operators show the increasing granularity when the number of classes rises up.
Title: The split of a working-class city: urban space, immigration and anarchism in inter-war Barcelona, 1914-1936
Authors: Oyón Bañales, José Luis
Abstract: Barcelona was the capital city of European anarchism during the inter-war years. The aim of this article is to discover the sociological and territorial features of the radicalized CNT (the Confederación Nacional del Trabajo), the anarchist union, which generated the summer 1936 revolution. By looking at the role of urban space as a variable in the collective processes of the working class the article argues that the unskilled recent immigrant worker and the neighbourhoods where this working-class figure was dominant were the key protagonists of revolutionary radicalism.
Title: Consequences of the Collision Between the Gas Ejected in the Collapse of a White Dwarf and a Low-Mass Star
Authors: Serichol Augué, Núria; García Senz, Domingo; Bravo Guil, Eduardo
Title: Working in the city: The knowledge city, experience from Barcelona's Metropolitan Centre
Authors: Marmolejo Duarte, Carlos Ramiro
Title: E-T-lipschitzian and E-T-kernel aggregation operators
Authors: Jacas Moral, Juan; Recasens Ferrés, Jorge
Abstract: Lipschitzian and kernel aggregation operators with respect to natural T-indistinguishability operators ET and their powers are studied. A t-norm T is proved to be ET-lipschitzian, and is interpreted as a fuzzy point and a fuzzy map as well. Given an archimedean t-norm T with additive generator t, the quasi-arithmetic mean generated by t is proved to be the most stable aggregation operator with respect to T.
Title: Aggregation of T-transitive Relations
Authors: Jacas Moral, Juan; Recasens Ferrés, Jorge
Abstract: This article studies the aggregation of transitive fuzzy relations. We first find operators that preserve transitivity and then extend the results to aggregating operators. As special cases, means and some kind of suitable ordered weighted averaging (OWAs) are used to aggregate transitive fuzzy relations with respect to an Archimedean t-norm. Three families of transitive relations that allow us to modify the entries of a given relation R continuously towards the smallest and the greatest ones in our universe are given. Aggregation of nonfinite families of transitive relations also is studied and applied to calculate the degree of inclusion or similarity of fuzzy quantities (fuzzy subsets of an interval of the real line). © 2003 Wiley Periodicals, Inc.
Title: Fuzzy t-transitive relations: eigenvectors and generators
Authors: Jacas Moral, Juan; Recasens Ferrés, Jorge
Abstract: After some preliminaries, the set of generators of a generalized equality relation (T-indistinguishability operator) is studied. This set is identified with the set of the eigenvectors of the relation. The relation between the fuzzy and “metric” topologies derived from these equalities is stablished. The concept of basis is introduced and the construction of a procedure in order to calculate explicitly a basis of a T-indistinguishability operator, for T archimedean, is proposed.
Title: Validation of Data Association for Monocular SLAM
Authors: Guerra Paradas, Edmundo; Munguia Alcala, Rodrigo; Bolea Monte, Yolanda; Grau Saldes, Antoni
Abstract: SimultaneousMapping and Localization (SLAM) is amultidisciplinary problem with ramifications within several fields. One of the
key aspects for its popularity and success is the data fusion produced by SLAM techniques, providing strong and robust sensory
systems even with simple devices, such as webcams in Monocular SLAM. This work studies a novel batch validation algorithm,
the highest order hypothesis compatibility test (HOHCT), against one of the most popular approaches, the JCCB. The HOHCT
approach has been developed as a way to improve performance of the delayed inverse-depth initialization monocular SLAM, a
previously developed monocular SLAM algorithm based on parallax estimation. Both HOHCT and JCCB are extensively tested
and compared within a delayed inverse-depth initialization monocular SLAM framework, showing the strengths and costs of this
Title: SIXE: A Payload for MINISAT-02
Authors: Gómez, J; Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Giovannelli, F; Padula, C L
Abstract: A description of the X-ray instrument SIXE proposed for the MINISAT-02 mission is presented. The description includes the scientific goals and instrument performances.
Title: El Sofà de la Dele
Authors: Grup de Teatre de l'FME
Eli Albanell, Carlos Florensa, Adrià González, Clàudia Masós, Marta Pérez, Marta Pita, Alba Puy, Juan Pedro Roldan, Eudal Romo i Ana Valdivia
Title: 02. Body, Mind & Imagination
Authors: Pallasmaa, Juhani
Description: Conferència de Juhani Pallasmaa, Arquitecte i professor a la Helsinki University of Technology, per al cicle "5 Posicions" organitzat per Jaume Bach, Professor de Projectes Arquitectònics. Presentat per Ferran Sagarra, Director de l'ETSAB i Ariadna Perich, Professora de Projectes i Adjunta a Direcció.
Title: Proyecto de construcción de la M-410 entre Parla y Valdemoro (Madrid)
Authors: Huerta Calpe, Marc
Abstract: El presente proyecto de construcción tiene por objeto el definir las obras necesarias para la construcción de una carretera de nuevo trazado que constituirá la variante Sur de Parla, conectándose al inicio con el tramo anterior de la M-410 y sirviendo de unión con la N-IV en su punto final.
Las circunstancias que justifican la actuación son la mejora de la movilidad transversal en la periferia sur de la Comunidad de Madrid así como del tráfico de largo recorrido al permitir la unión de la N-IV con la N-V.
Title: Vivienda en Girona
Authors: Mias Gifré, Josep