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Rate Adaptation, Power Adaptation and Mutual Exclusion in Variable Rate Wireless Networks

REA Auditado

We consider the joint design of rate adaptation, power adaptation and mutual exclusion for the MAC layer of a multi-hop, ad-hoc wireless network. We assume the physical layer supports a variable bit-rate. Most of the existing MACs analyze impacts of only one of these elements, and the jointly optimal strategy is not known. We assume that successive decoding is not implemented, i.e. one receiver decodes only one source at a time. Using a theoretical model that neglects protocol overhead, we numerically find the optimal combination of the three basic elements.

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Use of Convex Model Approximations for Real-Time Optimization via Modifier Adaptation

REA Auditado

Real-Time Optimization (RTO) via modifier adaptation is a class of methods for which measurements are used to iteratively modify a model-based optimization problem with the particularity that the plant model remains unchanged. The modifier terms correspond to the deviations between the measured and predicted constraints and between the measured and predicted cost and constraint gradients. If the iterative scheme converges, these modifiers guarantee that the converged point is a KKT point for the plant. If, furthermore, the plant model is adequate, i.e.

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The Vernissage Corpus: A Multimodal Human-Robot-Interaction Dataset

REA Auditado

We introduce a new multimodal interaction dataset with extensive annotations in a conversational Human-Robot-Interaction (HRI) scenario. It has been recorded and annotated to benchmark many relevant perceptual tasks, towards enabling a robot to converse with multiple humans, such as speaker localization, key word spotting, speech recognition in audio domain; tracking, pose estimation, nodding, visual focus of attention estimation in visual domain; and an audio-visual task such as addressee detection.

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Investigation of High-Pressure Turbine Endwall Film-Cooling Performance Under Realistic Inlet Conditions

REA Auditado

Progress in materials and manufacturing techniques allows an increase of the mean turbine inlet temperature, resulting in improved efficiency and specific power of the turbine. Because of the combustor characteristics, thermal and aerodynamic nonuniformities can be present at the turbine inlet section. Then, a further increase in the inlet temperature might also generate harmful conditions for vane endwalls. In other words, it is necessary to apply realistic turbine inlet temperature and velocity profiles to evaluate these real effects.

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• Ciencias