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Tuberculosis (TB) has been included among the top ten leading causes of death worldwide. Since 2008, several investigations have been developed by scientific community for automatic detection of mycobacterium tuberculosis (MT) in light field microscopy images. Those authors have applied techniques as digital images processing and machine learning, combined with different sizes of datasets and color...
This article presents the design of a telecommunications network that allows the monitoring of mud, earth, rock and debris flows produced by slope overflows in the main arterial roads of the city of Cuenca, Province of Azuay. This network is integrated in a system of monitoring of the SIS ECU 911 of the City of Cuenca. The system has been conceived as a set of devices such as wireless modules and...
The purpose of this paper is to develop and analyses device capable of identifying sign language. The recognition is performed using Multilayer Perceptron and all the input data are signals from flex sensors, accelerometers and gyroscopes. Artificial Neural Network is tested modifying parameters as: a) number of neurons in only middle layer, b) learning rate between input and middle layers and c)...
It's well known that the duration of the engineering programs in Latin American countries like Peru are of order of 5 years, roughly. Commonly, the target of the fifth year of program is to carry out activities of thesis and capstone projects. Clearly these activities would demand that the student can exhibit skills and a certain level of maturity which might be crucial for a successful completion...
This work analyzes the agro-climatic variables and the water requirements by evapotranspiration for strawberry plantations in the commune of San Pedro. Correlation analysis, principal components analysis, k-means of the time series of the agro-climatic variables and evapotranspiration are used. The periods with need of water are classified to implement a water balance controller.
This article contains a new alternative to the nondestructive hyperspectral analysis of the fermentation process of the cocoa bean. The study focuses on the chemical changes of the bean, measured along the eight days of fermentation in the wood boxes, and relating it to a new hyperspectral index. The study compares several beans looking for a new index, obtaining, for each index, a variety of curves...
In this paper, we propose a novel Superimposed Training (ST) technique for Orthogonal Frequency Division Multiplexing (OFDM) systems, where data and training signals are divided in orthogonal code domains in order to mitigate the interference between them. The data signal is partitioned into disjoint bins, which are spread using orthogonal codes and multiplexed in code domain. Then, the new data signal...
Energy efficiency is a permanent concern in all types of production processes. The automation of machine tools using Computer Numerical Control (CNC) and the increasing introduction of manipulator robots mean a significant improvement in the efficient use of energy versus manual production methods, but there is still scope for improving efficiency and productivity. One of the methods to improve efficiency...
This paper presents an improvement of the optimization methodology of luminaire built by high power light emitting diode (LED) matrix. Six parameters that modify the geometry and layout of the luminaire are evaluated through a parameter sensitivity study. The result indicates that five parameters have an equally distributed sensitivity index, while one parameter presents an index with less than 1%...
The purpose of this work is to present a new methodology to be applied in precision agriculture. In order to replace traditional methods, that are expensive, affect the environment and must be improved, it is presented the equipment and process of phytosanitary management using acoustic vibration in order to obtain correct application of product. The methodology is presented, in two case study: i)...
Wireless communication systems can be used to support a lot of industrial applications and much effort has been done to design solutions for this scenario. Actually, an important issue when designing such solutions is the performance evaluation, which requires proper resources for accurate results. This paper then proposes an experimental platform where the devices communicate via wireless and wire...
One of the main drawbacks of the implementation of predictive control in a direct matrix converter is the high computational cost and the adequate selection of weighting factors in order to control both input and output sides. In this paper is proposed an indirect model predictive current control strategy enhanced with a fixed switching predictive strategy and an active damping implementation. With...
Technological knowledge and human capital in the last decades have gathered momentum at world sphere with a significant impact on the sustainable development of the nations through the renewable energies, specifically, with the use of solar energy, which can become useful energy forms such as electricity through a photovoltaic system. Its implementation has increased in places that are located away...
Today, power systems face new challenges in different fields, such as economic, social, environmental and technical. In the technical field, a number of issues related to protection systems are recognized, due to the inclusion of distributed generation and microgrids, among other aspects. This paper presents a novel laboratory experience aimed at university students, with the objective of understanding...
In this written is presented the development of a didactic plant, of low cost, in which is possible to do practices of classic and advanced control. The variable to control is the luminous intensity, this equipment will strengthen the students' practice knowledge of careers related to the industrial control area. The implementation counts with an electric circuit, which has a smart sensor, an embedded...
In a context of users increasingly demanding for the use of technology, organizations are continually challenged to present new strategies to improve their business activities. This forces them to be aligned on frameworks and models that help to adequately relate Information and Communication Technology (ICT) resources to the external and internal activities of the organization. The application of...
This article presents a Monte Carlo-based analysis of the effects that random manufacturing errors produce on the radiation diagram of resonant slotted waveguide linear antennas. Positional and dimensional errors on the slots are considered. The study is performed using a tool implemented in MATLAB based on the Taylor synthesis of antenna parameters and the analysis of arrays and aperture models....
In this work we analyze the spectral emission of the flame emitted by burning biomass, of different species of wood such as Cypress, Fig, Olive and Pine. The analysis was carried out to distinguish the different species of wood sensing the compounds of Sodium and Potassium emitted at 582 nm and 780 nm. Also, a spectral analysis carried out for samples of wood at different contents of water. The results...
There has been intense research activity in the last decade, in the field of Ubiquitous Computing, since it is a model of interaction, which integrates the processing of information with the peoplés daily activities. This current study focuses on the implementation of a three-tier architecture application of geolocation in real time through mobile devices, in order to facilitate the mobility of people...
It presents the design and implementation of a manufacturing system integrating information and control technologies to provide an access to the user into part of the production system. A distributed control system is structured using didactic plants which emulate a manufacturing system of soft drinks. The control system is developed in Codesys®, integrating its operation through a monitoring system...
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