Technological Educational Institute of Mexico

Ensenada, Mexico

Technological Educational Institute of Mexico

Ensenada, Mexico
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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


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.


Ramirez-Fernandez C.,Autonomous University of Baja California | Ramirez-Fernandez C.,Technological Educational Institute of Mexico | Moran A.L.,Autonomous University of Baja California | Garcia-Canseco E.,Autonomous University of Baja California | Gomez-Montalvo J.R.,Autonomous University of Yucatán
Methods of Information in Medicine | Year: 2017

Objectives: 1) To enhance the content of an ontology for designing virtual environments (VEs) for upper limb motor rehabilitation of stroke patients according to the suggestions and comments of rehabilitation specialists and software developers, 2) to characterize the perceived importance level of the ontology, 3) to determine the perceived usefulness of the ontology, and 4) to identify the safety characteristics of the ontology for VEs design according to the rehabilitation specialists. Methods: Using two semi-structured Web questionnaires, we asked six rehabilitation specialists and six software developers to provide us with their perception regarding the level of importance and the usability of the ontology. From their responses we have identified themes related to perceived and required safety characteristics of the ontology. Results: Significant differences in the importance level were obtained for the Stroke Disability, VE Configuration, Outcome Measures, and Safety Calibration classes, which were perceived as highly important by rehabilitation specialists. Regarding usability, the ontology was perceived by both groups with high usefulness, ease of use, learnability and intention of use. Concerning the thematic analysis of recommendations, eight topics for safety characteristics of the ontology were identified: adjustment of therapy strategies; selection and delimitation of movements; selection and proper calibration of the interaction device; proper selection of measuring instruments; gradual modification of the difficulty of the exercise; adaptability and variability of therapy exercises; feedback according to the capabilities of the patient; and real-time support for exercise training. Conclusions: The rehabilitation specialists and software developers confirmed the importance of the information contained in the ontology regarding motor rehabilitation of the upper limb. Their recommendations highlight the safety features and the advantages of the ontology as a guide for the effective design of VEs. © Schattauer 2017.


Serna B.O.,Mexican Space Agency | Torres F.V.,Agencia Espacial Mexicana | Rochin J.A.M.,Technological Educational Institute of Mexico | Trujano M.C.,Technological Educational Institute of Mexico
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.


Del Carmen Rodriguez-Linan M.,Technological Educational Institute of Mexico | Heath W.P.,University of Manchester
Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering | Year: 2017

A compensation scheme is proposed for plants subject to both saturation and backlash in series at the actuator. It is shown that the series connection of a backlash inverse, saturation and the backlash itself is equivalent to a saturation function at a different level to the original saturation, and we call this the 'saturation equivalence'. Therefore, it is proposed to include such a backlash inverse in the compensator. This is shown to be optimal in a sense defined in the article. It is then straightforward to devise a compensator scheme based on traditional anti-windup. This is illustrated in both simulation and on a laboratory scale rig with severe backlash. A correction for the chattering observed in the control signal due to the discontinuous nature of the nonlinearity inverse is also presented. © Institution of Mechanical Engineers.


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.

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