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  1. No Access

    Article

    Effects of induced variation in anuran larval development on postmetamorphic energy reserves and locomotion

    Anuran larvae exhibit high levels of phenotypic plasticity in growth and developmental rates in response to variation in temperature and food availability. We tested the hypothesis that alteration of developme...

    David Álvarez, Alfredo G. Nicieza in Oecologia (2002)

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    Article

    Population trends and reproductive success of the European shag Phalacrocorax aristotelis on the Iberian Peninsula following the Prestige oil spill

    In 2003, immediately following the Prestige oil spill in Galicia, Spain, we studied the population trends and reproductive performance of European shags (Phalacrocorax aristotelis) at oiled and unoiled colonies. ...

    Alberto Velando, David Álvarez, Jorge Mouriño, Francisco Arcos in Journal of Ornithology (2005)

  3. No Access

    Article

    Microgeographic variation in metabolic rate and energy storage of brown trout: countergradient selection or thermal sensitivity?

    We examined the influence of habitat size, growth opportunity, and the thermal conditions experienced during early development on the standard metabolic rate (SMR) of juvenile brown trout (Salmo trutta) from six ...

    David Álvarez, José M. Cano, Alfredo G. Nicieza in Evolutionary Ecology (2006)

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    Article

    Factors determining tadpole vulnerability to predators: can prior experience compensate for a suboptimal shape?

    We investigated the role of constitutive morphology and previous experience in predator avoidance in two anuran species associated with different larval habitats. In Rana temporaria, deeper tails and larger body ...

    David Álvarez, Alfredo G. Nicieza in Evolutionary Ecology (2006)

  5. No Access

    Article

    Statistical analysis of structural compensatory growth: how can we reduce the rate of false detection?

    Compensatory growth (CG) is a key issue in work aiming at a full understanding of the adaptive significance of growth plasticity and its carryover effects on life-history. The number of studies addressing evol...

    Alfredo G. Nicieza, David Álvarez in Oecologia (2009)

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    Reference Work Entry In depth

    Benhabib, Seyla

    David Álvarez in Encyclopedia of Global Justice (2011)

  7. Article

    Open Access

    Molecular epidemiology, antimicrobial susceptibilities and resistance mechanisms of Streptococcus pyogenes isolates resistant to erythromycin and tetracycline in Spain (1994–2006)

    Group A Streptococcus (GAS) causes human diseases ranging in severity from uncomplicated pharyngitis to life-threatening necrotizing fasciitis and shows high rates of macrolide resistance in several countries. Ou...

    Virginia Rubio-López, Sylvia Valdezate, David Álvarez, Pilar Villalón in BMC Microbiology (2012)

  8. No Access

    Article

    Methamphetamine activates nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and induces human immunodeficiency virus (HIV) transcription in human microglial cells

    Human immunodeficiency virus (HIV) primarily infects glial cells in the central nervous system (CNS). Recent evidence suggests that HIV-infected individuals who abuse drugs such as methamphetamine (METH) have ...

    Emily S. Wires, David Alvarez, Curtis Dobrowolski, Yun Wang in Journal of NeuroVirology (2012)

  9. No Access

    Chapter and Conference Paper

    Learning-Based Floor Segmentation and Reconstruction

    This paper presents a comparison of the different colour spaces used in an environment modelling algorithm. This algorithm is based on the fusion of depth and colour information of a low-cost RGB-D camera to m...

    Jose Pardeiro, Javier V. Gómez in ROBOT2013: First Iberian Robotics Conferen… (2014)

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    Chapter and Conference Paper

    Improving Sampling-Based Path Planning Methods with Fast Marching

    Sampling-based path planning algorithms are well-known because they are able to find a path in a very short period of time, even in high-dimensional spaces. However, they are non-smooth, random paths far away ...

    Javier V. Gómez, David Álvarez in ROBOT2013: First Iberian Robotics Conferen… (2014)

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    Article

    Adaptive evolving strategy for dextrous robotic manipulation

    A robot task can be represented as a set of trajectories conformed by a sequence of poses. In this way it is possible to teach a mobile robot to accomplish a manipulation task, and also to reproduce it. Nevert...

    César Arismendi, David Álvarez, Santiago Garrido, Luis Moreno in Evolving Systems (2014)

  12. No Access

    Article

    Nociceptive sensory neurons drive interleukin-23-mediated psoriasiform skin inflammation

    In mice, it is possible to induce a psoriasis-like condition by applying imiquimod; here, the production of interleukin-23 that is stimulated by such skin inflammation is shown to depend on the interaction of ...

    Lorena Riol-Blanco, Jose Ordovas-Montanes, Mario Perro, Elena Naval, Aude Thiriot in Nature (2014)

  13. No Access

    Chapter and Conference Paper

    Stroke-Based Intelligent Word Recognition Using a Formal Language

    In this paper, we propose a new approach for off-line intelligent word recognition. Firstly, we segment a word into its single characters. Then, we tag every pixel of a character as vertical or horizontal and ...

    David Álvarez, Ramón Fernández in 10th International Conference on Soft Comp… (2015)

  14. No Access

    Chapter and Conference Paper

    Expert System for Handwritten Numeral Recognition Using Dynamic Zoning

    This paper introduces an expert system for handwritten digit recognition. The system considers that a numeric handwritten character can be decomposed into vertical and horizontal strokes. Then, the positions w...

    David Álvarez, Ramón Fernández, Lidia Sánchez in Hybrid Artificial Intelligent Systems (2015)

  15. No Access

    Article

    Neighbouring populations, opposite dynamics: influence of body size and environmental variation on the demography of stream-resident brown trout (Salmo trutta)

    In organisms such as fish, where body size is considered an important state variable for the study of their population dynamics, size-specific growth and survival rates can be influenced by local variation in ...

    Albert Fernández-Chacón, Meritxell Genovart, David Álvarez, José M. Cano in Oecologia (2015)

  16. No Access

    Article

    In vivo imaging and tracking of host–microbiota interactions via metabolic labeling of gut anaerobic bacteria

    Fluorescently labeled commensal microbes can be tracked in vivo, allowing visualization of host–microbiota interactions in real time.

    Naama Geva-Zatorsky, David Alvarez, Jason E Hudak, Nicola C Reading in Nature Medicine (2015)

  17. No Access

    Article

    Assessment of census (N) and effective population size (N e ) reveals consistency of N e single-sample estimators and a high N e /N ratio in an urban and isolated population of fire salamanders

    Amphibians are the most threatened vertebrates on Earth, and one of the main factors involved in their decline is the loss and fragmentation of their natural habitats. Contemporary urban development is a major...

    David Álvarez, André Lourenço, Daniel Oro in Conservation Genetics Resources (2015)

  18. No Access

    Article

    3D Robot Formations Path Planning with Fast Marching Square

    This work presents a path planning algorithm for 3D robot formations based on the standard Fast Marching Square (FM2) path planning method. This method is enlarged in order to apply it to robot formations motion ...

    David Álvarez, Javier V. Gómez in Journal of Intelligent & Robotic Systems (2015)

  19. No Access

    Chapter and Conference Paper

    Path Planning for Mars Rovers Using the Fast Marching Method

    This paper presents the application of the Fast Marching Method, with or without an external vectorial field, to the path planning problem of robots in difficult outdoors environments. The resulting trajectory...

    Santiago Garrido, David Álvarez, Luis Moreno in Robot 2015: Second Iberian Robotics Confer… (2016)

  20. No Access

    Article

    Fast Marching-based globally stable motion learning

    In this paper, a novel motion learning method is introduced: Fast Marching Learning (FML). While other learning methods are focused on optimising probabilistic functions or fitting dynamical systems, the propo...

    Javier V. Gomez, David Alvarez, Santiago Garrido, Luis Moreno in Soft Computing (2017)

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