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The search for renewable resources has become necessary for sustainable development. Wind energy is a clean energy source and of global importance, but most studies refer to high altitude and are carried out by researchers in developed countries. In this work, the objective was to evaluate the potential of micro and mini-generation (low heights) wind power in Cascavel-PR, a city located in southern Brazil, as an example of the application of the proposed methodology. For this purpose, wind speed and direction data were used, with a historical series of 21 years (1997-2017). The land use and occupation were performed in a semi-automatic way using Sentinel-2 satellite images. To generate the maps, an algorithm was created in Spring software, which correlated the land use and land cover information, the wind speed kriging and the formula coefficient values according to the identified obstacles. With this it was possible to conclude that regarding the period, spring is considered the season of the year with the greatest energy potential, where the highest averages for speed and power were estimated. It was also noted that the 40-meter-high range has the greatest potential and that the prevailing winds come from the northeast. La búsqueda de fuentes renovables se ha hecho necesaria para el desarrollo sostenible. La energía eólica es una fuente de energía limpia y de importancia mundial, pero la mayoría de los estudios están relacionados con las alturas y son realizados por investigadores de países desarrollados. En este trabajo, el objetivo fue evaluar el potencial eólico de la micro y minigeneración (bajas alturas) de Cascavel-PR, un municipio situado en el sur de Brasil, como ejemplo de la aplicación de la metodología propuesta. Para ello se han utilizado datos de velocidad y dirección del viento, con una serie histórica de 21 años (1997-2017). El uso y la ocupación del suelo se realizaron de forma semiautomática utilizando imágenes del satélite Sentinel-2. Para generar los mapas, se creó un algoritmo en el software Spring, que correlacionaba la información sobre el uso y la cobertura del suelo, el kriging de la velocidad del viento y los valores del coeficiente de la fórmula según los obstáculos identificados. Con esto se pudo concluir que en lo que respecta al período, la primavera es considerada la estación del año con mayor potencial energético, donde se estimaron los mayores promedios de velocidad y potencia. También se comprobó que el rango de 40 metros de altura tiene el mayor potencial y que los vientos predominantes provienen del noreste. A busca por fontes renováveis tornou-se necessária para um desenvolvimento sustentável. A energia eólica é uma fonte de energia limpa e de importância global, porém a maioria dos estudos são referentes à grandes alturas e realizadas por pesquisadores de países desenvolvidos. Neste trabalho, o objetivo foi avaliar o potencial eólico de micro e minigeração (baixas alturas) de Cascavel-PR, município localizado no sul do Brasil, como um exemplo da aplicação da metodologia proposta. Para tanto foram utilizados dados de velocidade e direção do vento, com série histórica de 21 anos (1997-2017). O uso e ocupação do solo foi realizado de forma semiautomática utilizando imagem do satélite Sentinel-2. Para a geração dos mapas, foi criado um algoritmo no software Spring, que correlacionou as informações de uso e ocupação do solo, a krigagem da velocidade do vento e os valores de coeficiente da fórmula de acordo com os obstáculos identificados. Com isso foi possível concluir que quanto ao período, a primavera é considerada a estação do ano de maior potencial energético, onde foram estimadas as maiores médias de velocidade e potência. Constatou-se também, a faixa de 40 metros de altura com o maior potencial e que os ventos predominantes são provindos de nordeste.

We report on a non-universal behavior of leaky surface plasmon waves on asymmetric (Si/Au/analyte of different height) 1D grating through numerical modelling. The occurrence of the leaky surface wave was maximized (suppressing the Fabry-Perot cavity mode), which can be identified in a reflection spectrum through characteristic minimum. Beyond a specific analyte height (h), new sets of surface waves emerge, each bearing a unique reflection minimum. Furthermore, all of these minima depicted a red-shift before saturating at higher h values. This saturation is found to be non-universal despite the close association with their origin (being leaky surface waves). This behavior is attributed to the fundamental nature and the origin of the each set. Additionally, all of the surface wave modes co-exit at relatively higher h values. © 2015 AIP Publishing LLC.

It is here presented the mechatronic design of an system with automatic storing and picking of small products. The design concept presents the system as a four degrees-of-freedom robot capable of storing objects at different heights. The novelty of the design lies in the space optimization using stacked trays for storing the desired objetcs. Other key components of the system are a device for entry and exit of products, and a robotic arm for manipulating objects. A typical application of such a system is the storage of products inside safe-deposit boxes is presented. © 2014 IEEE. Universidad Tecnologica de Bolivar

In this paper we introduce a new kinematic sensor to evaluate the ability to rise from a chair by means of the sit-to-stand locomotion task. It is based on the analysis of the acceleration assessed by a homemade accelerometric transducer. Preliminary results show the feasibility of discriminating the rising from a chair fixed to different heights and the capability of distinguishing between pathological and non pathological parkinsonian subjects.