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Mostrando ítems 21-40 de 360

    • openAccess   A Location Aware Mobile Tool for Direct and Indirect Climate Data Sensors 

      Ramos, Jose Francisco; Monfort Muriach, Aida; Huerta, Joaquin Wiley (2014-06)
      Access to GIS data from mobile platforms continues to be a challenge and there is a wide range of fields where it is extremely useful. In this work, we combined three key aspects: climate data sensors, mobile platforms and ...

    • openAccess   A lower bound for the area of Plateau foams 

      Gimeno, Vicent; Markvorsen, Steen; Martínez Sotoca, José Springer (2020-04-07)
      Real foams can be viewed as geometrically well-organized dispersions of more or less spherical bubbles in a liquid. When the foam is so drained that the liquid content significantly decreases, the bubbles become polyhedral-like ...

    • openAccess   A Meta-Review of Indoor Positioning Systems 

      Mendoza-Silva, Germán Martín; Torres-Sospedra, Joaquín; Huerta, Joaquin MDPI (2019)
      An accurate and reliable Indoor Positioning System (IPS) applicable to most indoor scenarios has been sought for many years. The number of technologies, techniques, and approaches in general used in IPS proposals is ...

    • closedAccess   A Methodological Construction of an Efficient Sequentially Consistent Distributed Shared Memory 

      Cholvi, Vicent; Fernández Anta, Antonio; Jiménez, Ernesto; Manzano, Pilar; raynal, michel Oxford University Press (2010)
      The paper proposes a simple protocol that ensures sequential consistency. The protocol assumes that the shared memory abstraction is supported by the local memories of nodes that can communicate only by exchanging messages ...

    • openAccess   A Mobile Query Service for Integrated Access to Large Numbers of Online Semantic Web Data Sources 

      Van Woensel, William; Casteleyn, Sven Elsevier (2016-01)
      From the Semantic Web’s inception, a number of concurrent initiatives have given rise to multiple segments: large semantic datasets, exposed by query endpoints; online Semantic Web documents, in the form of RDF files; and ...

    • openAccess   A model of self-avoiding random walks for searching complex networks 

      López Millán, Víctor M.; Cholvi, Vicent; López, Luis; Fernández Anta, Antonio John Wiley & Sons (2012)
      Random walks have been proven useful in several applications in networks. Some variants of the basic random walk have been devised pursuing a suitable trade-off between better performance and limited cost. A self-avoiding ...

    • closedAccess   A Multiresolution Approach to Render 3D Models 

      Ramos, Jose Francisco; Chover, Miguel; Ripollés Mateu, Oscar Enrique IOS Press (2013)
      Image synthesis techniques are present in a wide range of applications as they leverage the amount of information required for creating realistic visualizations. For fast hardware rendering they usually employ a triangle-based ...

    • closedAccess   A new pedestrian detection descriptor based on the use of spatial recurrences 

      Serra Toro, Carlos; Traver Roig, Vicente Javier Springer-Verlag (2011)
      Recent work on pedestrian detection has relied on the concept of local co-occurences of features to propose higher-order, richer descriptors. While this idea has proven to be benefitial for this detection task, it fails ...

    • closedAccess   A parametrized algorithm that implements sequential, causal, and cache memory consistencies 

      Jiménez, Ernesto; Fernández Anta, Antonio; Cholvi, Vicent Elsevier (2008)
      In this paper, we present an algorithm that can be used to implement sequential, causal, or cache consistency in distributed shared memory (DSM) systems. For this purpose it includes a parameter that allows us to choose ...

    • openAccess   A realistic evaluation of indoor positioning systems based on Wi-Fi fingerprinting: The 2015 EvAAL–ETRI competition 

      Torres-Sospedra, Joaquín; Moreira, Adriano; Knauth, Stefan; Berkvens, Rafael; Montoliu Colás, Raul; Belmonte-Fernández, Óscar; Trilles, Sergio; Nicolau, Maria João; Meneses, Filipe; Costa, António; Koukofikis, Athanasios; Weyn, Maarten; Peremans, Herbert IOS press (2017-02)
      This paper presents results from comparing different Wi-Fi fingerprinting algorithms on the same private dataset. The algorithms where realized by independent teams in the frame of the off-site track of the EvAAL–ETRI ...

    • openAccess   A regression model based on the nearest centroid neighborhood 

      García, Vicente; Sánchez Garreta, Josep Salvador; Marqués Marzal, Ana Isabel; Martínez-Peláez, Rafael Springer Verlag (2018)
      The renowned k-nearest neighbor decision rule is widely used for classification tasks, where the label of any new sample is estimated based on a similarity criterion defined by an appropriate distance function. It has also ...

    • closedAccess   A rejection option for the multilayer perceptron using hyperplanes 

      Valdovinos Rosas, Rosa María; Gasca, Eduardo; Rendón, Eréndira; Abundez, Itzel; Cruz, Rafael; Velásquez, Valentín; Saldaña, Sergio; Sánchez Garreta, Josep Salvador (2011)
      Currently, a growing quantity of the Artificial Intelligence tasks demand a high efficiency of the classification systems (classifiers); making an error in the classification of an object or event can cause serious problems. ...

    • closedAccess   A relevance model for a data warehouse contextualized with documents 

      Pérez Martínez, Juan Manuel; Berlanga Llavori, Rafael; Aramburu Cabo, María José Elsevier (2009)
      This paper presents a relevance model to rank the facts of a data warehouse that are described in a set of documents retrieved with an information retrieval (IR) query. The model is based in language modeling and relevance ...

    • closedAccess   A review of log-polar imaging for visual perception in robotics 

      Traver Roig, Vicente Javier; Bernardino, Alexandre Elsevier (2010)
      Log-polar imaging consists of a type of methods that represent visual information with a space-variant resolution inspired by the visual system of mammals. It has been studied for about three decades and has surpassed ...

    • openAccess   A RGBD-Based Interactive System for Gaming-Driven Rehabilitation of Upper Limbs 

      Fuertes Muñoz, Gabriel; Mollineda, Ramón A.; Gallardo Casero, Jesús; Pla, Filiberto MDPI (2019)
      Current physiotherapy services may not be effective or suitable for certain patients due to lack of motivation, poor adherence to exercises, insufficient supervision and feedback or, in the worst case, refusal to continue ...

    • openAccess   A scoping review on the use, processing, and fusion of geographic data in virtual assistants 

      Granell, Carlos; Pesántez-Cabrera, Paola; Vilches-Blázquez, Luis M.; Achig, Rosario; Luaces, Miguel R.; Cortiñas, Alejandro; Chayle, Carolina; Morocho, Villie Wiley (2021)
      Virtual assistants are a growing area of research in academia and industry with an impact on people’s daily life. Many disciplines in science are moving towards the incorporation of intelligent virtual ...

    • openAccess   A smartphone-based serious game for depressive symptoms: Protocol for a pilot randomized controlled trial 

      Gomez-Cambronero, Águeda; Casteleyn, Sven; Bretón-López, Juana; García-Palacios, Azucena; Mira, Adriana Elsevier (2023-04-25)
      Background Depression is the most prevalent mental disorder, with detrimental effects on the patient's well-being, high disability, and a huge associated societal and economic cost. There are evidence-based treatments, ...

    • closedAccess   A Software Engineering-Based Methodology for Selecting and Implementing Web 2.0 Technologies for Teaching 

      Grangel Seguer, Reyes; Campos Sancho, Cristina; Rebollo Santamaría, Cristina; Remolar, Inmaculada; Palomero Ródenas, Sergio Tempus Publications (2015)
      Nowadays, university students have grown up surrounded by Web 2.0 technologies, which they are able to use with ease. These technologies provide an opportunity to improve the learning/teaching process through collaboration, ...

    • openAccess   A Statistical Approach for Studying the Spatio-Temporal Distribution of Geolocated Tweets in Urban Environments 

      Santa, Fernando; Henriques, Roberto; Torres-Sospedra, Joaquín; Pebesma, Edzer MDPI (2019)
      An in-depth descriptive approach to the dynamics of the urban population is fundamental as a first step towards promoting effective planning and designing processes in cities. Understanding the behavioral aspects of human ...

    • closedAccess   A step-by-step methodology for enterprise interoperability projects 

      Chalmeta, Ricardo; Pazos, Verónica Taylor & Francis (2015)
      Enterprise interoperability is one of the key factors for enhancing enterprise competitiveness. Achieving enterprise interoperability is an extremely complex process which involves different technological, human and ...