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The current diagnosis of Parkinson's disease (PD) is based on a subjective assessment by the specialist. The monitoring of the tremor that presents in the hand index fingers in a patient with Parkinson's is one of the most important parameters to diagnose the evolution of the disease in an objective manner. This research analyze the tremor in the hand index fingers of patients with PD with medication...
In this paper the analysis of the movement of the upper-limbs of patients with Parkinson's disease (PD) in four activities is presented. An accelerometer-based sensor was used to acquire and store the acceleration data of the upper-limbs of the patients while they were doing the activities. The data was processed in MatLab; specifically the data was filtered and an estimation of Power Spectral Density...
Parkinson's disease is a neurological disorder that affects about 1% of people over 60 years. The complexity of the disease difficult to carry out objective medical assessments of the level of tremors. This article presents a system which uses the accelerometer and gyroscope sensors in smartwatches to quantify the tremors in patients with Parkinson's disease. The system is based on a Wireless Body...
In this work the design and development of a system to monitor tremors in patients with Parkinson's disease based on Arduino open-source prototyping platform is presented. For processing data tremors acquired by the sensor device we have developed an Android application which allows an evaluation of the state of PD patients based on three types of tests that are in the Unified Parkinson's Disease...
A robust MPC for constrained nonlinear system with uncertainties is presented. Uncertain evolution sets are used to predict the evolution of the system under any admisible uncertainty. The robust stability is guaranteed by a terminal and contractive constraint that drives the system to a robust positively invariant set. A new method to calculate the uncertain evolution sets is used. The method uses...
This paper shows how interval arithmetic can be applied to the computation of control invariant sets. The paper reviews some concepts in invariant set theory and presents recursive algorithms to compute sequences of control invariant sets. These ideas can be used to design stable controllers subject to state and control constraints. To prove set inclusion and inversion, interval arithmetic is also...
Recently, a new method for the design of Finite Impulse Response (FIR) prototype filters by frequency sampling for modulated filter banks was presented. In the previous work, we showed the algorithm for obtaining linear-phase prototype filters of restricted length: N=2mM, where m is an integer and M is related to the number of channels. Since fast algorithms of implementation for cosine-modulated...
In this paper, an experimental study of four optical setups used for developing a Focused IR Light Soldering System (FILSS) for Surface Mount Technology (SMT) lead free electronic devices, specifically Ball Grid Arrays (BGA), is presented. The results of this work show captured images of light distribution at the surface area of the BGA under soldering process, compared with the temperature distribution...
In this work, we present a thermal distribution measurement and analysis on the surface area of a Ball Grid Array (BGA), soldered by means of a Focused Infrared Light Soldering System (FILSS), which meets the BGA surface mount device (SMD) reflow solder heating profile.
The emergence of Intelligent Transport Systems has led to the development of a specific communications standard carried out by the IEEE: Wireless Access in Vehicular Environments (WAVE). However, this standard does not address certain critical security and real time application constraints, such as the platooning guidance of transport units. This paper presents an original proposal of medium access...
Given a nonlinear system and a control law, a new method to obtain cutting planes excluding points not belonging to the maximal admissible invariant set is proposed. The method uses linearization along the trajectory of the close-loop system to obtain a set of cutting planes. The main advantage of the approach is that if an inner approximation of the maximal admissible invariant set is available,...
A novel interrogation technique for multiplexing LPG-fiber loop mirrors has been proposed and experimentally demonstrated. Each displacement sensor is formed by a fiber loop mirror combined with a long period grating. This high reflectivity variable mirror is suitable to be interrogated by an OTDR and to be multiplexed in a crosstalk free setup with temperature independence.
Recent studies have brought attention to the pedagogical potential of mobile devices, and various experiments have tested tools in handheld devices, indicating that they strengthen and support learning in different fields. The purpose of the work presented in this paper was to design a 3D construction mobile game for 3D spatial visualization training, with the aim of familiarizing users with a 3D...
Some cardiac signal components are fragmented, attenuated and delayed when an infarct occurs in the ventricles. These micropotentials are called ventricular late potentials (VLPs) and normally appear in the end of the QRS complex and/or at the beginning of ST segment. VLPs have been used to detect sudden cardiac death risk in postinfarcted patients. Due to their very low amplitudes, late potentials...
This paper presents the design of a two-dimensional array of microphones for the implementation of nearfield acoustic holography (NAH) that allows the visualization and location of sound sources. The array corresponds to the holographic plane, where data is collected to reconstruct an acoustic field in another plane parallel to the holographic plane. Here, the basic theory and the experimental results...
With the increase in the number of Web services and the value they are taking, discovery of services that meet the criteria of users becomes a major challenge. Currently the discovery process lacks of well-defined semantics, therefore it is difficult to obtain the non explicit meaning of services, such as functionality. In order to provide an accurate solution to the problem described above, in this...
The technical vision principle of a mobile robot for working in a complex landscape or on a crosscountry terrain is presented. Issues of principle design, functioning and interaction of units and elements of the system are described. The mathematical tools for processing the signal detection, and also for determination of distances and angular measures are examined. The important parameters are analytically...
In this paper we present the development and validation of an experimental platform based in open source software and the development of a package for monitoring purposes. The software package with its components is described and validated through a group of tests and examples. These results are the initial support for future research which includes new ideas in the NGN (next generation networks)...
The new design creation of technical vision system for any automatic mobile object is offered. The new technical means for "technical vision system" realization are proposed. The mathematical apparatus for processing the digital information inside system, and also for determination of distances and angular measures in offered system are resulted. Conclusions under clause reflect questions...
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