Los tipos de clases práctica de Cultura Física

The objective of this research is to design a system of practical Physical Culture classes as a tool to facilitate the work of teachers in order to contribute to the development of professional skills in students, to favors their training as professionals capable of solving the most difficult problems general and frequent of the base link. Research methods were used such as: bibliographic review, observation, interview and systemic-structural-functional, to determine the limitations that hinder the efficient application of the system of practical classes.La investigación tiene como objetivo diseñar un sistema de clases prácticas de Cultura Física como herramienta para facilitar el trabajo de los docentes en aras de coadyuvar al desarrollo de habilidades profesionales en los estudiantes, para favorecer su formación como profesionales capaces de resolver problemas generales y frecuentes del eslabón de base. Se utilizaron métodos de investigación tales como: revisión bibliográfica, observación, entrevista y sistémico-estructural-funcional, para determinar las limitaciones que dificultan la aplicación con eficiencia del sistema de clases prácticas

Design and Characterization of a Planar Micro-Conveyor Device Based on Cooperative Legged Piezoelectric MEMS Resonators

This paper reports the design, fabrication, and performance of a hybrid piezoelectric planar micro-conveyor based on Micro-Electromechanical Systems (MEMS) bridge resonators and featuring 3D-printed vertical legs. The device includes two cooperating silicon plate resonators with an area of 5 × 1 mm2 , actuated by an integrated aluminum-nitride (AlN) piezoelectric thin film. An optimally designed array of 3D-printed projection legs was attached to the plates, to convert the standing-wave (SW) vertical vibrations into horizontal rotations or translations of the supported slider. An open-loop control strategy based on burst-type driving signals, with different numbers of sinusoidal cycles applied on each of the resonators, allowed the cooperation of the two bridges to set up prescribed trajectories of small flat objects, up to 100 mg, with positional accuracy below 100 nm and speeds up to 20 mm/s, by differential drive actuation. The effect of the leg tip and sliders’ surface finish on the conveyor performance was investigated, suggesting that further optimizations may be possible by modifying the tribological properties. Finally, the application of the micro-conveyor as a reconfigurable electronic system, driven by a preprogrammed sequence of signals, was demonstrated by delivering some surface-mount technology (SMD) parts lying on a 65 mg glass slider

La holónica como marco paradigmático para el diseño de interfaces

Inicialmente proponemos los principios que constituyen los sistemas holónicos y cómo estos satisfacen la ley de variedad requerida propuesta por Ashby, para su proyección en la formalización de la ingeniería de la usabilidad, así como para el diseño y desarrollo de interfaces holónicas que satisfagan los principios de autonomía, autoasertividad y cooperación, desde la identificación de su dominio de colaboración y el establecimiento de la competencias que ha de integrar en sus dominios de cooperación.Initially we propose the principles that constitute the holonics system and how these satisfy the law of required variety proposed by Ashby, for its projection in the formalization of the usability engineering, as well as for the design and development of holonic interfaces that satisfy the principles of autonomy, autoasertivity and cooperation, from their identification of collaboration’s domain and the establishment of their competences that it has to integrate in their cooperation’s domain

Herramientas para la conciliación y permisos parentales: Un análisis comparativo.

El presente trabajo pretende profundizar sobre diferentes aspectos de la conciliación de la vida familiar y laboral. Para ello explicaremos todas las medidas que lo componen y el desarrollo que ha tenido en distintas partes de nuestro país, siendo necesario también echar la vista al funcionamiento de los permisos en el resto del mundo. Como componente importante en este ámbito siempre contaremos con el permiso de paternidad, un elemento cambiante y cada vez más presente en la conciliación de la vida familiar y laboral

Diseño y desarrollo de interfaz multifuncional holónica para audioguía de ciudades

El desarrollo de una audioguía para ciudades es una ampliación del servicio desarrollado previamente con éxito para la visita guiada de museos y otros recintos cerrados. Mediante esta tecnología, el usuario puede visitar la ciudad a su ritmo y eligiendo su propio itinerario. La empresa sevillana Audiostroll, que había presentado en 2007 su primer prototipo de audioguía para ciudades con un software y hardware específicos, recurrió al grupo de Investigación de Ingeniería Holónicade la Escuela Universitaria Politécnica de Sevilla para desarrollar y diseñar una nueva interfaz multifuncional con mejores prestaciones. El proyecto de rediseño que se detalla en este artículo se ha abordado mediante técnicas de diseño y desarrollo holónico de interfaces, considerando para ello la audioguía una entidad holónica, es decir, un conjunto de las partes que lo integran y de las interacciones cooperativas entre ellas. Tras estudiar el producto bajo lo macroscópico y microscópico se ha realizado un rediseño estético-formal del producto y se ha mejorado su ergonomía cognitiva.The development of an audioguide for cities is an extension of the service previously developed with great success for guided visits to museums and other cultural attractions. Through the use of this technology, users are able to visit the city at their own pace and selecting their own itinerary. The Seville based company Audio-Stroll, which in 2007 presented its first prototype audioguide for cities with specific software and hardware, engaged the expertise of the Holonic Engineering Research group of the Technical University of Seville to develop and design a new, higher specification, multifunctional interface. The redesign project which is described in this article has been approached using holonic interface design and development techniques, for which reason the audioguide can be considered to be a holonic entity, that is, a whole composed of component parts and the co-operative interactions between them. After prior study of the product at a microscopic and macroscopic level, a formal-esthetic redesign of the product was carried out resulting in improvements in its cognitive ergonomic

Oxidative stress as a risk factor for osteoporosis in elderly Mexicans as characterized by antioxidant enzymes

<p>Abstract</p> <p>Background</p> <p>Oxidative stress (OxS) has recently been linked with osteoporosis; however, we do not know the influence of OxS as an independent risk factor for this disease.</p> <p>Methods</p> <p>We conducted a case-control study in 94 subjects ≥60 years of age, 50 healthy and 44 with osteoporosis. We measured total antioxidant status, plasma lipid peroxides, antioxidant activity of superoxide dismutase and glutathione peroxidase (GPx), and calculated the SOD/GPx ratio. Bone mineral density was obtained at the peripheral DXA in calcaneus using a portable Norland Apollo Densitometer^®. Osteoporosis was considered when subjects had a BMD of 2.5 standard deviations or more below the mean value for young adults.</p> <p>Results</p> <p>GPx antioxidant activity was significantly lower in the group of subjects with osteoporosis in comparison with the group of healthy subjects (<it>p </it>< 0.01); in addition, the SOD/GPx ratio was significantly higher in the group of individuals with osteoporosis (<it>p </it>< 0.05). In logistic regression analysis, we found OxS to be an independent risk factor for osteoporosis (odds ratio [OR] = 2.79; 95% confidence interval [95% CI] = 1.08–7.23; <it>p </it>= 0.034).</p> <p>Conclusion</p> <p>Our findings suggest that OxS is an independent risk factor for osteoporosis linked to increase of SOD/GPx ratio.</p

ERK5 Is a Major Determinant of Chemical Sarcomagenesis: Implications in Human Pathology.

Abstract: Sarcomas are a heterogeneous group of tumors in which the role of ERK5 is poorly studied. To clarify the role of this MAPK in sarcomatous pathology, we used a murine 3-methyl-cholanthrene (3MC)-induced sarcoma model. Our data show that 3MC induces pleomorphic sarcomas with muscle differentiation, showing an increased expression of ERK5. Indeed, this upregulation was also observed in human sarcomas of muscular origin, such as leiomyosarcoma or rhabdomyosarcoma. Moreover, in cell lines derived from these 3MC-induced tumors, abrogation of Mapk7 expression by using specific shRNAs decreased in vitro growth and colony-forming capacity and led to a marked loss of tumor growth in vivo. In fact, transcriptomic profiling in ERK5 abrogated cell lines by RNAseq showed a deregulated gene expression pattern for key biological processes such as angiogenesis, migration, motility, etc., correlating with a better prognostic in human pathology. Finally, among the various differentially expressed genes, Klf2 is a key mediator of the biological effects of ERK5 as indicated by its specific interference, demonstrating that the ERK5–KLF2 axis is an important determinant of sarcoma biology that should be further studied in human pathology.pre-print9446 K

Design space exploration in heterogeneous platforms using OpenMP

In the fields of high performance computing (HPC) and embedded systems, the current trend is to employ heterogeneous platforms which integrate general purpose CPUs with specialized accelerators such as GPUs and FPGAs. Programming these architectures to approach their theoretical performance limits is a complex issue. In this article, we present a design methodology targeting heterogeneous platforms which combines a novel dynamic offloading mechanism for OpenMP and a scheduling strategy for assigning tasks to accelerator devices. The current OpenMP offloading model depends on the compiler supporting each target device, with many architectures still unsupported by the most popular compilers, such as GCC and Clang. In our approach, the software and/or hardware design flows for programming the accelerators are dissociated from the host OpenMP compiler and the device-specific implementations are dynamically loaded at runtime. Moreover, the assignment of tasks to computing resources is dynamically evaluated at runtime, with the aim of maximizing performance when using the available resources. The proposed methodology has been applied to a video processing system as a test case. The results demonstrate the flexibility of the proposal by exploiting different heterogeneous platforms and design particularities of devices, leading to a significant performance improvement.This work has been funded by FEDER/Ministerio de Ciencia, Innovación y Universidades – Agencia Estatal de Investigacion/TEC2017-86722-C4-3-R, also under the FitOptiVis Project (ECSEL2017-1-737451), which is funded by the EU (H2020) and Ministerio de Ciencia, Innovación y Universidades

Angular bandgaps in sonic crystals: evanescent waves and spatial complex dispersion relation

Phononic crystals are artificial materials made of a periodic distribution of solid scatterers embedded into a solid host medium with different physical properties. An interesting case of phononic crystals, known as sonic crystals (SCs), appears when the solid scatterers are periodically embedded in a fluid medium. In SCs only longitudinal modes are allowed to propagate and both the theoretical and the experimental studies of the properties of the system are simplified without loss of generality. The most celebrated property of these systems is perhaps the existence of spectral band gaps. However, the periodicity of the system can also affect to the spatial dispersion, making possible the control of the diffraction inside these structures. In this work we study the main features of the spatial dispersion in SCs from a novel point of view taking into account the evanescent properties of the system, i.e., studying the complex spatial dispersion relations. The evanescent behavior of the propagation of waves in the angular band gaps are theoretically and experimentally observed in this work. Both the numerical predictions and the experimental results show the presence of angular band gaps in good agreement with the complex spatial dispersion relation. The results shown in this work are independent of the spatial scale of the structure, and in principle the fundamental role of the evanescent waves could be also expected in micro- or nanoscale phononic crystals.This work was supported by MCI Secretaria de Estado de Investigacion (Spanish government) and the FEDER funds, under Grant Nos. MAT2009-09438, FIS2011-29734-C02-02, and from Generalitat Valencia through Project No. GV/2011/055. V.R.G. is grateful for the support of "Programa de Contratos Post-Doctorales con Movilidad UPV (CEI-01-11)." 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