2014
Autores
Xiao, XH; Peng, MF; Cardoso, JS; Wang, L; Shen, ME;
Publicação
EXPERT SYSTEMS WITH APPLICATIONS
Abstract
The signal of the wireless sensor network in grounding grid, owing to energy loss, network congestion, path constraints and other factors, is easy to delay even partially losing. In order to ensure that the signal can be transmitted effectively in grounding grids for the substation, this paper presents a method based on traffic model of back-off balanced multiple sensor network cooperation model. As we all know, cognitive radio (CR) technology is adopted in multi-channel wireless networks to provide enough channels for data transmission. The MAC protocols should enable the secondary users to maintain the accurate channel state information to identify and utilize the leftover frequency spectrum in a way that constrains the level of interference to the primary users. We proposed a novel cooperation spectrum sensing scheme in which the secondary users adopt backoff-based sensing policy based on the traffic model of the primary users to maximum the throughput of the network. To obtain the full accurate information of the spectrum is a difficult task so that we propose the backoff sensing as a sub-optimal strategy. Since the secondary users sense only a subset of the channels in our proposed scheme, less time is spent to get the channel state information as more time is saved for the data transmission. And while dealing the signal data, I combine the intensity transfer method instead of the priority method. This can effectively reduce the network congestion, to ensure that the main information can be transfer well. It is also very useful to signal transmission for the Multi-sensor in Substations Grounding Grid (SGG).
2014
Autores
Domingues, I; Cardoso, JS;
Publicação
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
Abstract
In predictive modeling tasks, knowledge about the training examples is neither fully complete nor totally incomplete. Unlike semisupervised learning, where one either has perfect knowledge about the label of the point or is completely ignorant about it, here we address a setting where, for each example, we only possess partial information about the label. Each example is described using two (or more) different feature sets or views, where neither are necessarily observed for a given example. If a single view is observed, then the class is only due to that feature set; if more views are present, the observed class label is the maximum of the values corresponding to the individual views. After formalizing this new learning concept, we propose two new learning methodologies that are adapted to this learning paradigm. We also compare their instantiation in experiments with different base models and with conventional methods. The experimental results made both on real and synthetic data sets verify the usefulness of the proposed approaches.
2014
Autores
Cardoso, F; Costa, A; Norton, L; Senkus, E; Aapro, M; Andre, F; Barrios, CH; Bergh, J; Biganzoli, L; Blackwell, KL; Cardoso, MJ; Cufer, T; El Saghir, N; Fallowfield, L; Fenech, D; Francis, P; Gelmon, K; Giordano, SH; Gligorov, J; Goldhirsch, A; Harbeck, N; Houssami, N; Hudis, C; Kaufman, B; Krop, I; Kyriakides, S; Lin, UN; Mayer, M; Merjaver, SD; Nordstrom, EB; Pagani, O; Partridge, A; Penault Llorca, F; Piccart, MJ; Rugo, H; Sledge, G; Thomssen, C; van't Veer, L; Vorobiof, D; Vrieling, C; West, N; Xu, B; Winer, E;
Publicação
ANNALS OF ONCOLOGY
Abstract
2014
Autores
Cardoso, F; Costa, A; Norton, L; Senkus, E; Aapro, M; Andre, F; Barrios, CH; Bergh, J; Biganzoli, L; Blackwell, KL; Cardoso, MJ; Cufer, T; El Saghir, N; Fallowfield, L; Fenech, D; Francis, P; Gelmon, K; Giordano, SH; Gligorov, J; Goldhirsch, A; Harbeck, N; Houssami, N; Hudis, C; Kaufman, B; Krop, I; Kyriakides, S; Lin, UN; Mayer, M; Merjaver, SD; Nordstrom, EB; Pagani, O; Partridge, A; Penault Llorca, F; Piccart, MJ; Rugo, H; Sledge, G; Thomssen, C; van't Veer, L; Vorobiof, D; Vrieling, C; West, N; Xu, B; Winer, E;
Publicação
BREAST
Abstract
2014
Autores
Sioros, G; Guedes, C;
Publicação
SOUND, MUSIC, AND MOTION
Abstract
Syncopation is a rhythmic phenomenon present in various musical styles and cultures. We present here a set of simple rhythmic transformations that can serve as a formalized model for syncopation. The transformations are based on fundamental features of the musical meter and syncopation, as seen from a cognitive and a musical perspective. Based on this model, rhythmic patterns can be organized in tree structures where patterns are interconnected through simple transformations. A Max4Live device is presented as a creative application of the model. It manipulates the syncopation of midi "clips" by automatically de-syncopating and syncopating the midi notes.
2014
Autores
Rodrigues, IV; Ferreira, PM; Malheiro, AR; Brites, P; Pereira, EM; Oliveira, HP;
Publicação
2014 IEEE INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICINE (BIBM)
Abstract
The extraction of morphometric features from images of biological structures is a crucial task for the study of several diseases. Particularly, concerning neuropathies, the state of the myelination process is vital for neuronal integrity and may be an indicator of the disease type and state. Few approaches exist to automatically analyse nerve morphometry and assist researchers in this time consuming task. The aim of this work is to develop an algorithm to detect axons and myelin contours in myelinated fibres of sciatic nerve images, thus allowing the automated assessment and quantification of myelination through the measurement of the g-ratio. The application of a directional gradient together with an active contour algorithm was able to effectively and accurately determine the degree of myelination in an imagiological dataset of sciatic nerves. It was obtained an average error of 1.80%, in comparison with the manual annotation performed by the specialist in all dataset.
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