A Special Perturbation Method in Orbital Dynamics

Bead models are used in dynamical simulation of tethers. These models discretize a cable using beads distributed along its length. The time evolution is obtained nu- merically. Typically the number of particles ranges between 5 and 50, depending on the required accuracy. Sometimes the simulation is extended over long periods (several years). The complex interactions between the cable and its spatial environment require to optimize the propagators —both in runtime and precisión that constitute the central core of the process. The special perturbation method treated on this article conjugates simpleness of computer implementation, speediness and precision, and is capable to propagate the orbit of whichever material particle. The paper describes the evolution of some orbital elements, which are constants in a non-perturbed problem, but which evolve in the time scale imposed by the perturbation. It can be used with any kind of orbit and it is free of sin- gularities related to small inclination and/or small eccentricity. The use of Euler parameters makes it robust

A SpiNNaker Application: Design, Implementation and Validation of SCPGs

In this paper, we present the numerical results of the implementation of a Spiking Central Pattern Generator (SCPG) on a SpiNNaker board. The SCPG is a network of current-based leaky integrateand- fire (LIF) neurons, which generates periodic spike trains that correspond to different locomotion gaits (i.e. walk, trot, run). To generate such patterns, the SCPG has been configured with different topologies, and its parameters have been experimentally estimated. To validate our designs, we have implemented them on the SpiNNaker board using PyNN and we have embedded it on a hexapod robot. The system includes a Dynamic Vision Sensor system able to command a pattern to the robot depending on the frequency of the events fired. The more activity the DVS produces, the faster that the pattern that is commanded will be.Ministerio de Economía y Competitividad TEC2016-77785-

Archaeobotanical analysis in sedimentation deposits of Roman and Medieval pits in caves of NW Iberia. Cova do Xato and Cova Eirós (Lugo, Galicia, Spain)

The charcoal analysis results of the firewood consumption, as well as the carpological ones of seeds and fruits, in two caves with roman and medieval levels located in the eastern part of the Lugo province (Galicia), NW Iberia, are analyzed. The results arise from the anthropic exploitation of occasional or permanent sites situated in not very populated areasOcupaciones humanas durante el Pleistoceno en la cuenca media del Miño (HUM/2007-63662), and Poblamiento durante el Pleistoceno Medio/Holoceno en las comarcas orientales de Galicia (HAR2010-21786). Ministerio de Ciencia e InnovaciónS

Forest resource management during Roman and Medieval cave occupations in the Northwest of the Iberian Peninsula: Cova do Xato and Cova Eirós (Galicia, Spain)

References to the existence of historic remains in NW Iberian caves are frequent. However, archaeological research tends to focus on the search for evidence of older occupations, with little attention given to these historic levels. The aim of this article is to present the results of archaeobotanical analysis (charcoal analysis and carpology) from two caves in the eastern mountains of the province of Lugo – Cova do Xato and Cova Eirós – to determine the management of forest resources by the different communities living in themThis work was funded by the projects Human settlements during the Pleistocene period in the middle basin of the river Miño (HUM/2007-63662), Settlements during the Middle Pleistocene/Holocene in the eastern regions of Galicia (HAR2010-21786) and Design and development of a data model for an archaeological SPI during the Galician Iron Age (09SEC002CT). ALH has been supported by a pre-doctoral grant from the Atapuerca FoundationS

Prostate tumor growth is impaired by CtBP1 depletion in high-fat diet-fed mice

Clinical and epidemiologic data suggest that obesity is associated with more aggressive forms of prostate cancer, poor prognosis, and increased mortality. C-terminal-binding protein 1 (CtBP1) is a transcription repressor of tumor suppressor genes and is activated by NADH binding. High calorie intake decreases intracellular NAD(+)/NADH ratio. The aim of this work was to assess the effect of high-fat diet (HFD) and CtBP1 expression modulation over prostate xenograft growth. We developed a metabolic syndrome-like disease in vivo model by feeding male nude mice with HFD during 16 weeks. Control diet (CD)-fed animals were maintained at the same conditions. Mice were inoculated with PC3 cells stable transfected with shCtBP1 or control plasmids. Genome-wide expression profiles and Gene Set Enrichment Analysis (GSEA) were performed from PC3.shCtBP1 versus PC3.pGIPZ HFD-fed mice tumors.Fil: Moiola, Cristian Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; ArgentinaFil: de Luca, Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Biológica; ArgentinaFil: Zalazar, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; ArgentinaFil: Cotignola, Javier Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Rodríguez Seguí, Santiago Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisiología, Biología Molecular y Celular; ArgentinaFil: Gardner, Kevin. National Institutes of Health; Estados UnidosFil: Meissl, Roberto Jose. Academia Nacional de Medicina de Buenos Aires; ArgentinaFil: Vallecorsa, Pablo Daniel. Academia Nacional de Medicina de Buenos Aires; ArgentinaFil: Pignataro, Omar Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Mazza, Osvaldo. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Vazquez, Elba Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; ArgentinaFil: de Siervi, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentin

The force-velocity profile as determinant of spike and serve ball speed in top-level male volleyball players

Understanding the relationship between mechanical variables derived from actions such as jumping, sprinting, or ballistic bench press throwing and sport-specific performance moves is of scientific and practical interest for strength and conditioning coaches for improving training programs. We examined the association between mechanical variables derived from the force-velocity (FV) profiles of the aforementioned actions and spike and serve ball speeds in elite volleyball players. Twenty-two male elite volleyball players (age: 24.3 ± 4.5 years; height: 1.89 ± 0.06 m; body mass: 86.3 ± 8.6 kg) were tested in two sessions. Squatting, sprinting, and bench press throwing FV profiles were determined in the first session, while spike and serve ball speeds were assessed in the second session. The theoretical maximal force (F0) of vertical jumping, the theoretical maximal velocity of sprinting, and the F0 of bench press throwing in ascending order, were strongly associated (rs range 0.53– 0.84; p<0.05) with spike and serve ball speeds. These mechanical variables explained 20%- 36% of the variability in spike and serve ball speeds, with a greater influence on the serve speed. These results suggest that assessing jumping, sprinting, and bench press throwing force-velocity profiles might help provide player-specific training programs and optimize performance in these technical-tactical actions in male elite volleyball players

Recensiones [Revista de Historia Económica Año XIII Primavera-Verano 1995 n. 2 pp. 349-394]

Editada en la Fundación Empresa PúblicaAndrés Hoyo Aparicio. Todo mudó de repente. El horizonte económico de la burguesía mercantil en Santander, 1820-1974(Por Joaquim Cuevas Casaña).-- Pérez-Fuentes Hernández. Vivir y morir en las minas: estrategias familiares y relaciones de género en la primera industrialización vizcaína (1877-1913) (Por Valerie Herr).-- Francisco López Villarejo. Linares durante el Sexenio Revolucionario (1868-1975). Estudio de su evolución demográfica, política y socioeconómica(Por Andrés Moreno Mengíbar).-- Anaclet Pons y Justo Serna. La ciudad extensa. La burguesía comercial-financtera en la Valencia de mediados del XIX (Por Carlos Larrinaga Rodríguez).-- Alain Huetz de Lemps. Vignobles et vins dEspagne(Por Juan Luis Pan-Montojo González).-- Eugenio Baraja. La industria azucarera y el cultivo de la remolacha del Duero en el contexto nacional (Por José de la Cuesta).-- Raúl García Eras. Transportes, negocios y política: La Compañía Anglo-Argentina de tranvías: 1876-1981(Por Ángel Rodríguez Carrasco).-- María Antonia Marqués Dolz. Estado y economía en la antesala de la revolución, 1940-1952(Por Antonio Santamaría García).-- Daniel Díaz Fuentes. Las Políticas fiscales latinoamericanas frente a la Gran Depresión, Argentina, Brasil y México (1920-1940)(Por Agustín Liona Rodríguez).-- Larry Neal. The Rise of Financial Capitalism: International Capital Markets in the Age of Reason(Por Carlos Marichal).-- Eugenia Mata y Nuño Valerio; Mirian Halpern Pereira. Historia económica de Portugal Urna perspectiva global; Das revolugóes liberéis do Estado Novo(Por Eloy Fernández Clemente).-- John F. Chown. A History of Moneyfrom AD 800 (Por J. Ignacio Peña).-- Paul Bairoch. Economics and World History. Myths and Paradoxes(Por Pedro Fraile)Publicad

Herramienta Kahoot como estrategia para fomentar la participación y el aprendizaje activo del alumno

Depto. de Química en Ciencias FarmacéuticasFac. de FarmaciaFALSEsubmitte

A special perturbation method in orbital dynamics

The special perturbation method considered in this paper combines simplicity of computer implementation, speed and precision, and can propagate the orbit of any material particle. The paper describes the evolution of some orbital elements based in Euler parameters, which are constants in the unperturbed problem, but which evolve in the time scale imposed by the perturbation. The variation of parameters technique is used to develop expressions for the derivatives of seven elements for the general case, which includes any type of perturbation. These basic differential equations are slightly modified by introducing one additional equation for the time, reaching a total order of eight. The method was developed in the Grupo de Dinámica de Tethers (GDT) of the UPM, as a tool for dynamic simulations of tethers. However, it can be used in any other field and with any kind of orbit and perturbation. It is free of singularities related to small inclination and/or eccentricity. The use of Euler parameters makes it robust. The perturbation forces are handled in a very simple way: the method requires their components in the orbital frame or in an inertial frame. A comparison with other schemes is performed in the paper to show the good performance of the method

Veterinaria es calidad: Evaluación contínua y autoevaluación

El documento recoge los resultados del proyecto de Innova-Gestion UCM desarrollado durante los años 2016/2017 para la evaluación por rúbrica y online, formando, aplicando y analizando sus resultados. También se exponen los datos preliminares de la opinión de docentes y alumnos sobre su satisfacción con el actual Grado en Veterinaria. Estos resultados son, además, el punto de partida, para continuar mejorando la calidad de la docencia del centro