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Hernandez D.E.,Tijuana Institute of Technology | Olague G.,Research Center Cientifica Educacion Superior Of Ensenada | Hernandez B.,National Autonomous University of Mexico | Clemente E.,Technological Educational Institute of Mexico
Neural Computing and Applications | Year: 2017

The need for highly accurate classification systems capable of working on real-time applications has increased in recent years. Nowadays, several computer vision tasks apply a classification step as part of bigger systems, hence requiring classification models that work at a fast pace. This rendered interesting the concept of real-time object classification to several research communities. In this paper, we propose to accelerate a bio-inspired model for object classification, which has given very good results when compared with other state-of-the-art proposals using the compute unified device architecture (CUDA) and exploiting computational capabilities of graphic processing units. The classification model that is used is called the artificial visual cortex, a novel bio-inspired approach for image classification. In this work, we show that through an implementation of this model in the CUDA framework it is possible to achieve real-time functionality. As a result, the proposed system is able to process images in average of up to 90 times faster than the original system. © 2017 The Natural Computing Applications Forum

Colin A.,Autonomous University of Nuevo León | Valdes-Sada P.,University of Monterrey | Olguin L.,University of Sonora | Vazquez R.,National Autonomous University of Mexico | And 7 more authors.
Proceedings of the International Astronautical Congress, IAC | Year: 2016

Nowadays, miniaturized satellites play an important roll not only in the academics, but also in scientific projects for observing, monitoring and imaging because of small instruments can be integrated into the payload. On the other hand, the emerging technologies are also used for both education and research to reinforce the future of space engineering [1-3]. The cost for constructing small satellites is very low compared with those of the standard sizes; for instance, a space telescope for astronomical science could exceed the cost in several magnitude orders compared with a small cubesat. In this paper, we propose the implementation of a refractor telescope (80mm, f/5) into a 2U-Cubesat, which will be used for photometric studies of point-sources such as planets, the brightest stars and asteroids. The system uses a 1600×1220 CCD camera, coupled to an achromatic lens of 80mm of diameter at f/5. The images are transmitted by a XTEND900, operating from 902 to 928 MHz at 9600 bauds. Attitude control is made by a 3-axis mechanical gyroscope for its positioning to the point-sources. The maximum power consumption of the full system is around 15 Watts. A ground optical telescope of 8 inches at f/10, is configured for tracking the satellite by means the received coordinates from a GPS installed on the satellite. Copyright © 2016 by the International Astronautical Federation (IAF). All rights reserved.

Serna B.O.,Mexican Space Agency | Torres F.V.,Agencia Espacial Mexicana | Esper R.C.,Mexico | Solares L.E.M.,Mexico | And 2 more authors.
Proceedings of the International Astronautical Congress, IAC | Year: 2016

Space medicine in Mexico has been promoted incipiently over the years, has been a poorly supported specialty by health educational institutions, shows of this is the small number of specialists who have dedicated themselves to the theme. The Mexican Space Agency (AEM) since its inception, has pushed the issue of space medicine and space life sciences with the aim of generating a significant change through management working groups, supporting technological development projects and research, and the realization of events that promote the benefits of working in the field. During the years 2014 and 2015 several events that really caught the attention of health specialists and science and technology were made, were held two forums of space medicine called "Towards new horizons of medicine", which was obtained participation of about 500 people and more than 2,000 who attended the event remotely. Was held the First Mexican Congress of Space Medicine in the city of San Luis Potosi, an event that was attended by 300 people and another 500 remotely. In these events very interesting scientific and technological works were presented, as well as presentations of national and international experts. For the future, the AEM plans to continue conducting forums since the interest of the community has been very great, also is organizing the Second Mexican Congress of Space Medicine, to be held in Guadalajara. The main goal is to have in the medium term the first Mexican Institute of Space Medicine.

Hernandez D.E.,Research Center Cientifica Estudios Superiores Of Ensenada | Clemente E.,Research Center Cientifica Estudios Superiores Of Ensenada | Clemente E.,Technological Educational Institute of Mexico | Olague G.,Research Center Cientifica Estudios Superiores Of Ensenada | Briseno J.L.,Research Center Cientifica Estudios Superiores Of Ensenada
Journal of Computational Science | Year: 2015

In recent years computer vision systems have used the human visual system as inspiration for solving different tasks such as object detection and classification. Computational models as the artificial visual cortex (AVC) have shown promising results in solving such problems. Thus, this paper proposes a new methodology for creating an image descriptor vector for classification, and at the same time, finding the objects' location within the image. Also, this work implements the brain programming paradigm from a multi-objective perspective in order to improve the performance in the object classification task. This methodology is implemented for training the proposed model in order to classify the images from the GRAZ-01 and GRAZ-02 databases. The solutions found in this research match, and in some cases outperform, other techniques of the state-of-the-art for classifying the aforementioned databases. © 2015 Elsevier B.V.

Guillen P.F.,National Autonomous University of Mexico | Vazquez R.,National Autonomous University of Mexico | Miranda L.F.,University of Vigo | Zavala S.,Technological Educational Institute of Mexico | And 4 more authors.
Monthly Notices of the Royal Astronomical Society | Year: 2013

We present narrow-band [O III]λ5007 and Hα images, as well as long-slit high-resolution echelle spectra of the planetary nebula NGC 6058. Our data reveal that NGC 6058 is a multipolar planetary nebula of ~45 arcsec in extent that is formed by four bipolar outflows oriented at different position angles. Assuming homologous expansion for all the structures, and a distance of 3.5 kpc, we obtain polar velocities of ~68 km s-1 for three of them. The estimated kinematical ages suggest that the three oldest outflows were ejected at intervals of ~1100 and ~400 yr, during which the ejection axis changed its orientation by ~60° and~40°, respectively. Although an inner ring-like structure is suggested by the direct images, the kinematics shows that no equatorial ring or toroid exists in the nebula. On the contrary, the long-slit spectra reveal that the ring-like structure corresponds to a fourth outflow that is oriented almost perpendicular to the other three. This fourth outflow is the youngest one and appears to be interacting with the other three, creating aprotruding zone that sweeps material in a region almost perpendicular to the major axes of the oldest outflows. This structure also presents two bright arcuate regions along the direction of the older outflows, and on opposite sides of the central star. From our model, we suggest thatNGC6058 could be at an intermediate evolutionary stage between starfish planetary nebulae and multipolar planetary nebula with apparent equatorial lobes. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Contreras M.E.,National Autonomous University of Mexico | Vazquez R.,National Autonomous University of Mexico | Miranda L.F.,Institute Astrofisica Of Andalucia | Miranda L.F.,University of Vigo | And 3 more authors.
Astronomical Journal | Year: 2010

We present an observational study of the planetary nebula (PN) NGC7354 consisting of narrowband Hα and [N II]λ6584 imaging as well as low- and high-dispersion long-slit spectroscopy, and VLA-D radio continuum. According to our imaging and spectroscopic data, NGC7354 has four main structures: a quite round outer shell and an elliptical inner shell, a collection of low-excitation bright knots roughly concentrated on the equatorial region of the nebula, and two asymmetrical jet-like features, not aligned either with the shells' axes, or with each other. We have obtained physical parameters like electron temperature and electron density as well as ionic and elemental abundances for these different structures. Electron temperature and electron density slightly vary throughout the nebula going from ≃11, 000 to ≃14, 000 K, and from ≃1000 to ≃ 3000 cm-3, respectively. The local extinction coefficient c Hβ shows an increasing gradient from south to north and a decreasing gradient from east to west consistent with the number of equatorial bright knots present in each direction. Abundance values show slight internal variations but most of them are within the estimated uncertainties. In general, abundance values are in good agreement with the ones expected for PNe. Radio continuum data are consistent with optically thin thermal emission. Mean physical parameters derived from the radio emission are electron density ne = 710 cm-3 and M(H II) = 0.22 M1. We have used the interactive three-dimensional modeling tool SHAPE to reproduce the observed morphokinematic structures in NGC7354 with different geometrical components. Our observations and model show evidence that the outer shell is moving faster (≃35 km s-1) than the inner one (≃ 30 km s-1). Our SHAPE model includes several small spheres placed on the outer shell wall to reproduce equatorial bright knots. Observed and modeled velocity for these spheres lies between the inner and outer shells velocity values. The two jet-like features were modeled as two thin cylinders moving at a radial velocity of ≃60kms-1. In general, our SHAPE model is in very good agreement with our imaging and spectroscopic observations. Finally, after modeling NGC7354 with SHAPE, we suggest a possible scenario for the formation of the nebula. © 2010 The American Astronomical Society.

PubMed | Benaki Phytopathological Institute, University of Padua, Technological Educational Institute of Mexico and Hungarian Academy of Sciences
Type: Journal Article | Journal: Zootaxa | Year: 2015

This paper presents an updated checklist of the Greek scale insect fauna and the results of the first zoogeographic analysis of the Greek scale insect fauna. According to the latest data, the scale insect fauna of the whole Greek territory includes 207 species; of which 187 species are recorded from mainland Greece and the minor islands, whereas only 87 species are known from Crete. The most rich families are the Diaspididae (with 86 species), followed by Coccidae (with 35 species) and Pseudococcidae (with 34 species). In this study the results of a zoogeographic analysis of scale insect fauna from mainland Greece and Crete are also presented. Five species, four from mainland Greece and one from Crete are considered to be endemic. Comparison with the scale insect fauna of other countries is provided.

Ramirez-Fernandez C.,Autonomous University of Baja California | Ramirez-Fernandez C.,Technological Educational Institute of Mexico | Garcia-Canseco E.,Autonomous University of Baja California | Moran A.L.,Autonomous University of Baja California | Gomez-Montalvo J.R.,Autonomous University of Yucatán
ACM International Conference Proceeding Series | Year: 2015

Today, the development of virtual reality (VR) applications for upper limb motor rehabilitation is still a dificult and time-consuming task. It requires developers to be skilled in motor rehabilitation, interaction devices, and stroke sur- vivor characteristics, among others, to be able to develop a virtual environment (VE). In the literature there are several recommendations to aid in the design of VEs. However, to integrate the recommendations it is necessary to understand key domain concepts in motor rehabilitation. In this paper, we introduce VEULMoR, an ontology-based approach for designing VEs for Upper Limb Motor Rehabilitation. This approach uses the domain expertise coded into the ontology to shorten and facilitate the design of a VE. The information contained in the ontology can be used to denote the design factors that integrate the VE. © 2015 ACM.

Badilla G.L.,Mexicali Institute of Technology | GomeZ M.M.A.,Mexicali Institute of Technology | Samaniego E.R.,Technological Educational Institute of Mexico
Materials Performance | Year: 2015

The importance of boilers and related piping as a cost effective energy source that replaces the expensive electrical energy in the Mexicali region was studied. The evaluation consisted of two steps, analyzing the PPO in the interior side of the pipelines and proposing primary solutions to reduce corrosion, and suggesting secondary alternatives to avoid future corrosion. The evaluation was conducted over two years. Specimens of SS and CS, measuring 30 by 10 by 5 mm, matched the pipeline materials. Mass loss was monitored after 1, 3, 6, 12, and 24 months to track the development of corrosion products, and these data were correlated with the levels of RH and temperature during the corresponding seasons. After exposure of the metallic probes, a microanalysis with scanning electron microscopy (SEM) identified the composition of the corrosion products and the principal corroded metallic surfaces. The correlation analysis ranged from 20% RH and 20 °C to 75% RH and 40°C with good correlation to the CR. In these ranges, it was observed that the maximum and minimum levels showed good correlation between the three variables in the evaluation. These values included high temperatures that did not permit the accumulation of water on the metal surfaces, resulting in low time of wetness and minor localized pitting corrosion.

Badilla G.L.,Mexicali Institute of Technology | Acosta Gomez M.M.,Mexicali Institute of Technology | Samaniego E.R.,Technological Educational Institute of Mexico | Luz S.,Mexicali Institute of Technology | Perea T.,Technological Educational Institute of Mexico
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2013

Copper sulfides formed in micro electrical connections are very observed frequently in manufacturing areas of the electronics industry in arid and marine environments as whiskers or dendrites This is generated by drastic variations of relative humidity (RH) and temperature levels in indoor of these industrial plants, which originates the corrosion phenomena and the deterioration and deformation of electrical ways where are conducted the electrical current of Micro Electromechanical Systems (MEMS) MEMS are fabricated in isolated and clean rooms of the electronics industry where are strict rules with specific for the control of microclimates to avoid the corrosion process In these rooms are filters with high control to detect diminutive and finite particles and gases which promotes the electrochemical process This added to the severe changes in some periods of the year, of humidity and temperature in outdoor of companies, affect the microclimates of the clean rooms, originating the condensation, which generates the visible or invisible thin films in the copper surfaces of micro electrical connections of MEMS and causing the corrosion For this reason a study of characterization of sulfur compounds was made to identify the type of corrosion process generated with the climatic factors mentioned, and with the concentration levels of sulfurs that penetrate by holes and air condition systems principally to indoor of the electronics industry This research shows results of the uniform corrosion in marine zones as in the cities of Tijuana and Ensenada and the pitting corrosion in arid environments as the Mexicali city from 2010 to 2011 The technique used to analyze the copper sulfides as corrosion products was the Scanning Electron Microscopy (SEM) with information organized in graphs and tables and also a MatLab simulation was made to determine in a short future the corrosion rate of this electrochemical phenomenon to measure the grade of deterioration of the MEMS connections and have the precaution necessary to prevent the corrosion process Copyright © 2013 IFAC.

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