131 research outputs found
A new tool for intelligent parallel processing of radar/SAR remotely sensed imagery
No full textA novel parallel tool for large-scale image enhancement/reconstruction and postprocessing of radar/SAR sensor systems is addressed. The proposed parallel tool performs the following intelligent processing steps: image formation, for the application of different system-level effects of image degradation with a particular remote sensing (RS) system and simulation of random noising effects, enhancement/reconstruction by employing nonparametric robust high-resolution techniques, and image postprocessing using the fuzzy anisotropic diffusion technique which incorporates a better edge-preserving noise removal effect and faster diffusion process. This innovative tool allows the processing of high-resolution images provided with different radar/SAR sensor systems as required by RS endusers for environmental monitoring, risk prevention, and resource management. To verify the performance implementation of the proposed parallel framework, the processing steps are developed and specifically tested on graphic processing units (GPU), achieving considerable speedups compared to the serial version of the same techniques implemented in C language. © 2013 A. Castillo Atoche et al
A note on the effects of an individual large rainfall event on saline Lake Alchichica, Mexico
No full textA novel parallel tool for large-scale image enhancement/reconstruction and postprocessing of radar/SAR sensor systems is addressed. The proposed parallel tool performs the following intelligent processing steps: image formation, for the application of different system-level effects of image degradation with a particular remote sensing (RS) system and simulation of random noising effects, enhancement/reconstruction by employing nonparametric robust high-resolution techniques, and image postprocessing using the fuzzy anisotropic diffusion technique which incorporates a better edge-preserving noise removal effect and faster diffusion process. This innovative tool allows the processing of high-resolution images provided with different radar/SAR sensor systems as required by RS endusers for environmental monitoring, risk prevention, and resource management. To verify the performance implementation of the proposed parallel framework, the processing steps are developed and specifically tested on graphic processing units (GPU), achieving considerable speedups compared to the serial version of the same techniques implemented in C language. " 2013 A. Castillo Atoche et al.",,,,,,"10.1155/2013/405372",,,"http://hdl.handle.net/20.500.12104/39068","http://www.scopus.com/inward/record.url?eid=2-s2.0-84889062948&partnerID=40&md5=b6ad7e0448893009d8bb11fe43e98231",,,,,,,,"Mathematical Problems in Engineering",,,,"2013",,"Scopu
A fading channel simulator implementation based on GPU computing techniques
No full textChannel simulators are powerful tools that permit performance tests of the individual parts of a wireless communication system. This is relevant when new communication algorithms are tested, because it allows us to determine if they fulfill the communications standard requirements. One of these tests consists of evaluating the system performance when a communication channel is considered. In this sense, it is possible to model the channel as an FIR filter with time-varying random coefficients. If the number of coefficients is increased, then a better approach to real scenarios can be achieved; however, in that case, the computational complexity is increased. In order to address this issue, a design methodology for computing the time-varying coefficients of the fading channel simulators using consumer-designed graphic processing units (GPUs) is proposed. With the use of GPUs and the proposed methodology, it is possible for nonspecialized users in parallel computing to accelerate their simulation developments when compared to conventional software. Implementation results show that the proposed approach allows the easy generation of communication channels while reducing the processing time. Finally, GPU-based implementation takes precedence when compared with the CPU-based implementation, due to the scattered nature of the channel. � 2015 R. Carrasco-Alvarez et al
Asertividad y clima organizacional en los trabajadores de la Sub Región de Salud Luciano Castillo Colonna - Sullana, 2021
No full textEl presente estudio se planteó como objetivo establecer la relación entre
asertividad y clima organizacional en los trabajadores de la Sub Región Luciano
Castillo Colonna-Sullana 2021. La metodología fue bajo el enfoque cuantitativo, básica, de diseño no experimental, transversal descriptivo y correlacional; se
trabajó con toda la población la cual estuvo conformada por 117 trabajadores de
la salud que cumplieron con los criterios de inclusión. La técnica que se usó fue la
encuesta y como instrumentos las escalas de asertividad y clima organizacional, ambos gozan de confiabilidad con niveles altos, según el Alfa de Cronbach (0.80- 0.79 y 0.86 respectivamente), y validez a través de juicio de expertos. Se utilizó la
prueba de correlación producto momento de spearman. Entre los resultados más
resaltantes figuran: El nivel predominante fue el estilo asertivo con un 65% y de
41.9% en el nivel medianamente favorable del clima organizacional. Conclusión:
asertividad y clima organizacional, no presentan una correlación estadísticamente
significativ
Plant/soil-microbial fuel cell operation effects in the biological activity of bioelectrochemical systems
No full textPlant and soil microbial fuel cells (PMFCs and SMFCs, respectively) are bioelectrochemical systems that produce energy using microorganisms as catalysts. This energy can be harvested; however, its impact on biological activity has seldom been explored. To reveal the main characteristics of this impact, we monitored four experimental designs for 20 days under open-sky conditions. The effect of PMFC/SMFC start-up on metabolism was evaluated by photosynthesis of Codiaeum variegatum and heterotrophic soil respiration to determine the short-term effects. To compare the results, a normalized parameter of power density, which considered the PMFC/SMFC configurations, solar irradiance, and soil temperature, was introduced. The highest energy was obtained for the PMFC configuration. The energy harvesting stimulated the photosynthetic rate of C. variegatum up to two times with respect to its normal values, while the heterotrophic soil respiration decreased 30%. Thus, in the PMFC and SMFC start-up operations, the increase in soil temperature due to energy harvesting suggests that soil temperature is the most relevant parameter influencing plant metabolism and energy generation. These results open a new pathway for understanding the bioregulation of plants/soil when subjected to energy harvesting.Fil: Valdez Hernández, Mirna. El Colegio de la Frontera Sur; MéxicoFil: Acquaroli, Leandro Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; ArgentinaFil: Vázquez Castillo, Javier. Universidad de Quintana Roo; MéxicoFil: Gonzalez Perez, Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; ArgentinaFil: Heredia Lozano, Julio C.. Universidad de Quintana Roo; MéxicoFil: Castillo Atoche, Alejandro. Universidad Autónoma de Yucatán; MéxicoFil: Sosa Vargas, Lydia. Université Pierre et Marie Curie; FranciaFil: Osorio de la Rosa, Edith. Universidad de Quintana Roo; Méxic
Hybrid FPGA/ARM co-design for near real time of remote sensing imagery
No full textA novel hybrid co-design for implementing high-resolution reconstruction algorithms, for near real time implementation of remote sensing (RS) imagery, is addressed in this paper. In the proposed codesign scheme, the inverse square root and the matrix operations of the robust adaptive space filter algorithm are implemented as accelerators units in a Field Programmable Gate Array (FPGA) using piecewise polynomial approximations and systolic array (SA) techniques. Then, the FPGA based accelerator is integrated with an ARM processor in a HW/SW co-design paradigm that meets the (near) real time imaging systems requirements in spite of conventional computations. Finally, we report and discuss the results of the hybrid FPGA/ARM co-design implementation in a Xilinx Virtex-5 XC5VFX70TFFG1136 for reconstruction of real world RS images. © Springer International Publishing Switzerland 2014
One-frame two-dimensional deflectometry for phase retrieval by addition of orthogonal fringe patterns
No full textA novel hybrid co-design for implementing high-resolution reconstruction algorithms, for near real time implementation of remote sensing (RS) imagery, is addressed in this paper. In the proposed codesign scheme, the inverse square root and the matrix operations of the robust adaptive space filter algorithm are implemented as accelerators units in a Field Programmable Gate Array (FPGA) using piecewise polynomial approximations and systolic array (SA) techniques. Then, the FPGA based accelerator is integrated with an ARM processor in a HW/SW co-design paradigm that meets the (near) real time imaging systems requirements in spite of conventional computations. Finally, we report and discuss the results of the hybrid FPGA/ARM co-design implementation in a Xilinx Virtex-5 XC5VFX70TFFG1136 for reconstruction of real world RS images. " Springer International Publishing Switzerland 2014.",,,,,,,,,"http://hdl.handle.net/20.500.12104/41993","http://www.scopus.com/inward/record.url?eid=2-s2.0-84921687571&partnerID=40&md5=09b8437322b32b3fc3c9b4a1ea73bb1c",,,,,,,,"Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",,"103
Trabajo colegiado una estrategia para el logro de aprendizajes en el área de Ciencia y Ambiente según el enfoque de indagación en la I.E. N° 26 Niño Jesús de Atoche
No full textA través del siguiente trabajo denominado trabajo colegiado una estrategia para mejorar el nivel de logro en el área de ciencia y ambiente de la I. E. N° 26 “Niño Jesús de atoche” en el área de ciencia y ambiente; se ha elaborado a partir de la problemática detectada en referente al bajo nivel de aprendizaje en el área designada según el enfoque de indagación a razón que las docentes tienen problemas en el uso de estrategias pertinentes para incentivar al niño a formular preguntas, realice cuestionamientos, plantee soluciones de acuerdo a su contexto. Ante este panorama se propone promover actividades y estrategias del trabajo colegiado la aplicación es de tipo cualitativa que se llevará a cabo en la institución en mención con la participación de todos los actores de la Institución. Para ello se ha diseñado el plan de acción que plantea las diferentes actividades relacionados al trabajo colegiado con el propósito principal de mejorar del nivel de logro de aprendizaje en el área en estudio
An efficient systolic array grid-based structure of the robust Bayesian regularization technique for real-time enhanced imaging in uncertain remote sensing environment
No full textIn this paper, we address a hardware implementation of the efficient robust Bayesian regularization architecture for the real-time enhancement of large-scale remote sensing (RS) imaging. The efficient sense of the proposed architecture is related to the high-performance embedded implementation that is achieved with the aggregation of parallel computing and systolic array design techniques in a novel grid connected-based accelerator. Then, the developed high-speed accelerator is integrated with an embedded processor via the HW/SW co-design paradigm. The presented approach is used for solving RS image enhancement/reconstruction of the ill-conditioned inverse spatial spectrum pattern estimation problems via an interesting low-cost high-performance embedded computing solution. Finally, we show the achieved results and how we drastically reduced the computational load for real-world large-scale geospatial images. Zapotitlán 2014 Springer-Verlag Berlin Heidelberg
Comparativo de producción de cuatro gramíneas hidróponicas a condiciones climáticas de la provincia de Sullana
No full textLa investigación fue realizada en el departamento de Piura Provincia de Sullana en localidad de Villa María en el predio privado del Sr Atoche Zapata Eriberto , cuyo objeto de estudio fue evaluar un Comparativo de producción de cuatro gramíneas hidropónicas a condiciones climáticas de la provincia de Sullana. El mismo que fue evaluado bajo un diseño de bloques completamente al azar comparativo en la producción de forraje verde hidropónico se ve reflejado en las condiciones de humedad relativa que no debe ser superior al 80 % y de temperaturas que se den entre 18 a 30 °C. el cual se ha logrado llegar a un máximo de rendimiento para el sorgo en el anaquel fue para la cebada de 122.75 kg, seguido del trigo 112.75, sorgo de 111.625 y maíz que solo ha logrado producir 71.25kg de forraje en 40 bandejas por tratamiento.Tesi
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