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We investigate the detection of epileptic seizure onset based on electroencephalography (EEG) signal in short-time sessions (less than one second) from various samples from epilepsy and healthy people. Wavelet transform methods are applied to extract the features embedded in the high-dimensional epileptic EEG signal. It is found that results of wavelet transform play significant roles in dimensional...
The current ship reporting procedures are a little cumbersome, a large number of ship reports increased the burden of the ship's officer, to a certain extent, affecting the safety of navigation. In order to simplify the ship reporting procedures and reduce the workload which brings to the ship officer, under the background of the e-navigation construction advocated by IMO (International Maritime Organization),...
Dramatic growth of e-book sales revenue in recent years makes book recommendations essential to readers. Traditional bag-of-words models have difficulty of capturing the spatial information of terms over books. In this paper, a three-layer tree structure is used for representing each book. A framework, Tree2Vector, is designed for transforming tree-based book data into vectorial space. First, in order...
A general structure of motor-brake pedal is put forward to solve the problem of automatic parking system for intelligent driving on traditional fuel vehicles. At the same time, as the large fluctuation of conventional PID control and the parameters of PID cannot be changed in realtime, fuzzy-PID control method is used to control the rotation angle of the pedal. Firstly, the structure of the pedal...
Decoding for a macaque's moving finger position from neural signals in its motor cortex, is a problem about neural decoding. In the problem, many conventional decoding algorithms adopt a supervised training way, which needs some ground truth data and find a function w.r.t neural spikes and the finger's moving position. Therefore, the ground truth data will have an important effect on the performance...
This paper explores dynamics analysis of a designed inflatable wing, the inflatable wing was designed and flight test were made to evaluate aerodynamic performance. First, a general two structural airfoils that rectangular and NACA wing based on data analysis are derived from simulation analysis. Next, the structural airfoil is extended to smooth and bumpy by comparing the pressure characteristics...
We proposed, for the first time, a MPLC based programmable multi-port mode switch that can support m mode channels by using 2m + 1 times plan optical conversation. A 1×3 port mode switch with one mode channel is simulated by using 3 phase plates. Mode conversation and switch are performed with insertion loss less than 0.5dB and crosstalk less than −23.5dB.
Performance of Extended Kalman Filter combined with the Viterbi-Viterbi phase estimator (VVPE-EKF) for adaptive nonlinear phase noise mitigation is studied. The VVPE-EKF achieves 1.4 dB, 1.6 dB and 2.3 dB nonlinear system tolerance promotion at BER=1e-3 for linewidth of 100 kHz, 1 MHz and 2 MHz compared to the least mean square combined with VVPE (VVPE-LMS). VVPE-EKF become convergent much faster...
In this study, the continuous daily ET at 90 m spatial resolution was estimated from the Surface Energy Balance System (SEBS) by using the land surface temperature and land surface reflectance of VNIR combining the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Advanced Space-borne Thermal Emission Reflectance Radiometer (ASTER) spatiotemporal characteristics obtained from the Temporal...
A novel feed-back structure blind adaptive chromatic dispersion equalizer for coherent quaternary phase shift keying (QPSK) and 16-quadrature amplitude modulation (16-QAM) receivers in optical access network is presented. A low complexity chromatic dispersion (CD) error function algorithm precisely equalize chromatic dispersion with high bit error rate (BER) performance.
We propose a novel structure to realize highly efficient polarization beam splitter (PBS) by using a slot waveguide. Simulation results show that the PBS has realizes extinction ratio larger than 24.6 dB from 1500 nm to 1600 nm for TM and larger than 20 dB from 1521 nm to 1584 nm for TE. The maximum of ER for TE is as high as 37.4 dB at 1552 nm. The insertion loss for TE and TM are under 0.06 dB and...
Only using the post-earthquake PolSAR imagery to interpret collapsed buildings information is a rapid and effective disaster investigation means, which is also easy and fast for implementation of the earthquake damage assessment. This work is focused on rapid building earthquake damage information detection in urban areas using a single post-earthquake PolSAR image. In this paper, the Precision Weighted...
Simplified Maximum Likelihood (ML) detection and annular-sector (AS) detection for two dimensional constellations is shown to significantly outperform the conventional minimum Euclidean distance (MED) detector in presence of laser phase noise and frequency offset.
This paper proposes to monitor the total accumulated chromatic dispersion (CD) by using extended Kalman filter (EKF) for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems. Accurate estimation performance can be achieved by only one OFDM training symbol. Simulations results show that the proposed EKF method can quickly converge to the exact dispersion value within 40 subcarriers...
This paper explores the effectiveness of applying a deep learning based method to segment the amniotic fluid and fetal tissues in fetal ultrasound (US) images. The deeply learned model firstly encodes the input image into down scaled feature maps by convolution and pooling structures, then up-scale the feature maps to confidence maps by corresponded un-pooling and convolution layers. Additional convolution...
The synchronization of multi-weighted complex dynamical networks with fixed and switching topologies is respectively investigated in this paper. Firstly, by putting to use Lyapunov functional approach and some inequality techniques, we establish a synchronization criterion for the multi-weighted complex dynamical network with fixed topology. In addition, the similar methods can be applied to get some...
This paper presents a decentralized adaptive super-twisting control method for modular and reconfigurable robots (MRRs) with uncertain environment contact. Unlike conventional methods that rely on robot-environment contact model or force/torque sensing, this paper addresses the problem of controlling MRRs in contact with uncertain environment that using only local dynamic information of each joint...
This paper is concerned with finite-time synchronization for two models of coupled Cohen-Grossberg neural networks with time-varying delays. In the first one, linearly coupled Cohen-Grossberg neural networks is considered. In the second one, nonlinearly coupled Cohen-Grossberg neural networks is discussed. Based on finite-time stability theory, some inequality techniques, and designed controllers,...
An adaptive radial basis function neural network(RBFNN) sliding-mode controller with decoupled method was proposed for a class of underactuated system. Different sub-systems were devided according to the performance of the system, and the corresponding sub-sliding plane was designed for the sub-system; The RBFNN controller was designed for one of the sub-system, and its adaptive algorithm was derived...
Single-image blind deblurring could be considered as an important preprocessing step in imaging information fusion. Its purpose is to simultaneously estimate blur kernel and latent sharp image from only one observed blurred image. Blind deblurring has been attracting increasing attention in the fields of image processing, computer vision, computational photography, etc. However, it is a typically...
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