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This paper present a method for the analysis of self-similar traffic flows in high-speed computer network with the aim of providing a possible explanation for the locality phenomenon that appears in the behavior of the Hurst exponent in stationary second order temporal series representing traffic flows in current high-speed computer networks. It is shown analytically that this phenomenon occurs if...
The quality of a model is determined by how closely it mimics the true plant. In this paper we have used the model of customized robotic arm, previously designed by the authors. This paper talks about the consequences of structured uncertainties on the robustness of a controller. We have incorporated structured uncertainties into a system of customized robotic gripper arm by using the method of μ-synthesis...
We propose the formalism of the Dirac-Delta functions with polynomial argument to measure the probability of call completion (PCC) which plays an importance role in the development and assessment of the telecommunications. The measurement of the PCC is also translated as a rough estimate of the Quality-of-Service of providers of cellular communication. In order to test the model, the Dirac-Delta operator...
Nowadays, there are significant amounts of malware codes that are created every day. However, the majority of these samples (malware) are variations of other malware that have been already identified. Therefore, most of the analyzed malware have similar structure among them. In this investigation, we will present a technic to extract features throughout different abstraction levels in order to classify...
We have studied the different forms of emitted radiation by a free electron when is under interaction by a superintense twisted field. The fundaments of this study are based in the mathematical development as derived in Ref [1], inside the covariant classical electrodynamics. Because the expansion of the twisted field onto integer-order Bessel functions, we have assumed various possibles scenarios...
In order to obtain an accurate measurement result of individual or capacitive sensors' capacitances, it generally requires the stimulus signal with distortion as low as possible. However, it is difficult for an industrial capacitive sensor to generate such a low distorted stimulus signal in the sensor due to the cost and space limits of the sensor. On the basis of a self-balance capacitance voltage...
In this paper a new method to achieve identification of a process in closed loop operation is introduced. The process in this case is a MIMO system of four coupled tanks. First, this nonlinear system is identified around an operating point in open loop operation. Then, two PI controllers are designed to control the level of liquid in two of the tanks. Finally, the process is identified in closed loop...
Industrial robots are reliable machines for manufacturing tasks such as assembly, welding, painting and palletizing operations. They have been traditionally programmed by an operator using a teach pendant in a point-to-point scheme with limited sensing capabilities such as industrial vision systems and force/torque sensing. Today, industrial robots can react to environment changes specific to their...
For the learning and teaching process is not enough to count with the right type of methodology according to the objectives. The successful implementation of this is in some cases is linked to the way it is carried out; in other words, the application itself. There are projects in this field which fail to succeed simply because teachers who are new do not have prior experience and make mistakes in...
The author, as part of a project to study and develop a proposal based on telemedicine, made a first study on the state of the art (both in Latin America and nationally); and it is found that, despite some isolated efforts of some services and health centers in general, do not yet exist in Chile a policy or plan Telemedicine officially declared. As a result of research, data collection, and developed...
The strong rising on demand for agricultural crop quantity and quality, beyond the growing concern of non-point pollution, are requiring higher levels on agricultural production systems efficiency and environmental safety. Measurement of the nitrogen (N) on cultivation is one successful method of increase the agricultural production systems. Nitrogen application can increase productivity, decrease...
Writing high quality papers for international publications is crucial for generate a real impact on the scientific community. In this paper some relevant recommendations are given in order to generate quality publications. These tips have been generated and compiled based on the experience and material released on the Internet by a large number of authors. With this, it is hoped to contribute with...
This paper presents a method used for detection of optic nerve in fundus digital images; for this purpose, initially there is a preprocessing and segmentation of digital images of fundus taken from databases Messidor and Stare in order to stand out the veins and blood vessels of ocular region. The processed image is used in an artificial neural network which has three layers; an input layer with 10000...
We present here a comparative study of nonlinear structures for best nonlinear model identification of the dynamic behavior of total radiation emitted from a flame in a combustion process. A successful identification of the total radiation open up its use as an optical variable for the correct combustion diagnostic and control. We test for best fit a Hammerstein-Weiner structure with a polynomial...
Multilevel inverters have made another surge of enthusiasm for industry and investigation. While the set up topologies have wound up being an achievable choice in a broad assortment of high-power medium-voltage applications, there has been a dynamic energy for the advancement of fresher topologies. Decrease in general part considers contrasted with the traditional topologies has been a vital objective...
The global initiatives to achieve cleaner ways to generate electricity have motivated non-dispatchable generation to play a major role in the operation of electric power systems. However, this kind of generation along with its variability have increased the need for better control systems to achieve a constant balance between generation and consumption, in order to maintain frequency in their scheduled...
The implementation of devices or sensors developed over open source electronic platforms is a very important key of the projects aiming for promoting concepts such as Internet of things and Smart Cities. Due to the heterogeneity of these projects and especially the lack of a standard to regulate the communication process between the sensors and the application server, taking into account that many...
AC drives based on current-source converters (CSC) present an interesting alternative for medium voltage motors, because of high quality of both AC input currents and load voltage waveforms. This kind of power converters allows avoiding wave reflection problems that are typical of voltage-source inverters. However, the use CSC in active power filters is limited by power losses caused by the DC current...
In this work a multi-frame interferometric system based in digital image processing and digital interferometry is presented. Here, an experimental optical setup which integrates the virtues of the digital interferometry technique and the capacity to capture two interferograms, to two different times, in a single digital recording system is implemented. The digital reconstruction of the interferograms...
For recognizing human actions in video sequences, it is necessary to extract sufficient information which can represent motion features. In recent years, dense trajectories based action recognition algorithms attract more attention for containing rich spatio-temporal information. However, these algorithms are always faced with cluttered background. To solve this problem, we involve object tracking...
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