Benefits like elimination of hard-wiring, cost reduction, infrastructure-free and easy maintenance make Wireless Sensor Networks (WSNs) an innovative technology whose range of applications is increasing in many differ...
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Benefits like elimination of hard-wiring, cost reduction, infrastructure-free and easy maintenance make Wireless Sensor Networks (WSNs) an innovative technology whose range of applications is increasing in many different environments. Since WSNs were born, reliable communications have been a challenge. Some complex routing solutions have been presented in the recent past. In this paper, the objective is to present a simple algorithm to enhance the reliability of end-to-end transmissions optimizing power consumption and to demonstrate that it works in applications that require bounded delay guarantees on packet delivery.
Microprocessors is a typical subject within the computerarchitecture field of scope. It is quite common to use simulators in practical sessions, due to the complexity of its contents. In this paper a new methodology ...
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Microprocessors is a typical subject within the computerarchitecture field of scope. It is quite common to use simulators in practical sessions, due to the complexity of its contents. In this paper a new methodology based on practical sessions with real devices and chips is proposed. Simple designs of microprocessors are exposed to the students at the beginning, rising the complexity gradually toward a final design with a multiprocessor integrated in a single FPGA chip. Finally, assessment results are shown.
Automatic subtitling of television content has become an approachable challenge due to the advancement of the technology involved. In addition, it has also become a priority need for many Spanish TV broadcasters, who ...
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In 1988, Baker and Urban presented an inventory model with stock dependent selling rate. First, this paper develops the existence and uniqueness of the solution to the problem. Second, this paper explains that it is a...
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The network model bases upon the energy hub concept, which was developed by the Vision of Future Energy Networks (VoFEN) research group at ETH Zurich in the last years. Keynote of the concept is a combined optimizatio...
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A novel method for blind separation of digital signals based on elitist genetic algorithms is presented in this paper. Contrast function, consisting in a weighted sum of high order statistics measures (cumulants of di...
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A novel method for blind separation of digital signals based on elitist genetic algorithms is presented in this paper. Contrast function, consisting in a weighted sum of high order statistics measures (cumulants of different orders), plays the role of genetic fitness function, and also guide the genetic algorithm by a Gauss-Newton adaptation applied to the genetic population, that reduces the search space and provide faster convergence rate. The use of elitism assures the convergence of the algorithm. Several experiments were conducted on digital signals and mixing models, and the high amount of simulations derived from them provided the best combination of the constant parameters in terms of separation accuracy and convergence rate. In this sense, we also achieve a robust blind source separation method that efficiently adapts to the statistical nature of the mixing signals, within a low population of the genetic algorithm.
Automatic subtitling of television content has become an approachable challenge due to the advancement of the technology involved. In addition, it has also become a priority need for many Spanish TV broadcasters, who ...
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Automatic subtitling of television content has become an approachable challenge due to the advancement of the technology involved. In addition, it has also become a priority need for many Spanish TV broadcasters, who will have to broadcast up to 90% of subtitled content by 2013 to comply with recently approved national audiovisual policies. APyCA, the prototype system described in this paper, has been developed in an attempt to automate the process of subtitling television content in Spanish through the application of state-of-the-art speech and language technologies. Voice activity detection, automatic speech recognition and alignment, discourse segment detection and speaker diarization have proved to be useful to generate time-coded colour-assigned draft transcriptions for post-editing. The productive benefit of the followed approach heavily depends on the performance of the speech recognition module, which achieves reasonable results on clean read speech but degrades as this becomes more noisy and/or spontaneous.
Since the world presents a dynamically changing environment, we need synthetic systems that can process and respond to motion. The main contribution of this work is the efficient implementation of a biologically inspi...
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Inertial Measurement Units (IMUs) are gaining popularity in several application fields, such as navigation, body motion monitoring and indoors positioning. Microelectromechanical (MEMS) accelerometers and gyroscopes a...
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Finding sensitive and appropriate technologies for non-invasive observation and early detection of the Alzheimer’s Type Dementia (ATD) are of fundamental importance to develop early treatments. Single Photon Emission...
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