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In eukaryotes, protein ubiquitylation is an important type of post-translation modification, in which the ubiquitin conjugates to a substrate protein. To have a better insight of the mechanisms underlying ubiquitylation, a key step is to identify protein ubiquitylation sites. Many existing computational methods are based on feature engineering, which may lead to biased and incomplete features. Deep...
Brain tumor segmentation from magnetic resonance images is a critical step for early tumor diagnosis and treatment. However, accurate and general segmentation of brain tumor is still a challenging task due to complicated characteristics of brain tumor in magnetic resonance images. To solve this problem, we proposed a novel method for brain tumor segmentation based on features of separated local square...
The common-mode voltage (CMV) could cause severe hazards to the induction machine winding insulation and bearings, reducing the machine lifetime. This paper proposes an improved predictive torque control (PTC) method with CMV reduction strategy which cost little and much smaller than traditional filter method. A simulation based on SIMULINK is analyzed which verify the effectiveness of the proposed...
This paper addresses the robust beamforming design for a downlink cloud radio access network (cloud RAN) subject to per-base-station (BS) power constraint and individual signal-to-interference-plus-noise ratio (SINR) requirements. Our objective is to minimize the overall network power and backhaul cost while guaranteeing the users' SINR constraints for every channel realization by designing the joint...
This paper presents system concept, calibration and example measurements of a novel ultra-wideband, real-time channel sounder. The sounder operates in the frequency range from 3 GHz to 18 GHz thus providing a Fourier delay resolution of 66.7 ps. The developed sounder measures overlapping sub-bands of 1 GHz bandwidth to cover the whole frequency range. This allows us to use a waveform generator and...
Science of Neural Networks, and even much more so computing applications, have undergone developments beyond any predictions since McCullock-Pitts artificial neuron (1943) up via Hopfield's neurons (1982, 1984) to Kasabov spiking-neurons neucube (2014) and evolving connectionist systems (2003). Still computational functionality of all kinds of neural network implies guaranteed operating steady-state...
The paper analyzes the common-source digital upsets process characterized by using multi-dimensional hidden Markov model (MDHMM) which is used to simulate digital upsets. The digital upsets are generated from the artificial environments operating on the distributed redundant processing controllers. The main contribution of this paper is to characterize the correlated digital upsets relationship generated...
In this paper, a novel pilot extension scheme is proposed for massive MIMO uplink transmission, and its performance is evaluated analytically. Specifically, we divide the cell users into two groups, namely near users and far users, according to their distances to the service base stations. The far users are more motivated to mitigate the inter-cell interference than the near users at the price of...
We propose Stereo Direct Sparse Odometry (Stereo DSO) as a novel method for highly accurate real-time visual odometry estimation of large-scale environments from stereo cameras. It jointly optimizes for all the model parameters within the active window, including the intrinsic/extrinsic camera parameters of all keyframes and the depth values of all selected pixels. In particular, we propose a novel...
In this paper, a reconfigurable frequency selective surface (FSS) using varactor diodes is presented for low RCS radome application. The FSS is composed of three-layered metallic structures. The varactors are biased with a middle layer bias wire connected to via holes and wire grids on front layer. The back layer is a wideband bandstop structure for out-of-band RCS reduction. The FSS radome without...
A novel hundred-microsecond histotripsy treatment method is proposed. This method utilizes the confocal dual-frequency of second harmonic superimposition control approach. A custom-designed transducer consisting of two confocal spherical-annular element arrays is used. The frequencies of the transducer are 1.1 and 2.2 MHz, and the peak negative pressures are 5 MPa and 12 MPa with shock wave. Due to...
Kidney cancer is a severe disease which can be treated by using a non-invasive, controllable and focused ultrasound surgery method-histotripsy. Previously, histotripsy produced by hundred-microsecond-long focused ultrasound pulses has been proposed by us, which generates mechanical homogenized lesion by employing boiling bubbles and high duty cycle compared with conventional methods. However, the...
Confocal fundamental and harmonic superimposition can greatly lower the cavitation threshold and enhance cavitation activity via wave interference. In this study, a histotripsy protocol of using dual frequency of fundamental and harmonic superimposition combined with hundred-microsecond-length pulses and two stages is proposed and testified to get good use of the nonlinear regimes of enhanced cavitation...
Histotripsy is a new non-invasive therapy modality and can mechanically disintegrating target tissue for tumor treatment. In this study, we propose a strategy of dual frequency of fundamental and harmonic superimposition combined with hundred-microsecond-length pulses and two stages to get good use of the nonlinear regimes of enhanced cavitation and boiling. Confocal fundamental and harmonic superimposition...
This study put forward two methods to gain the human activity space data based on Vicon motion capture system, which were key frame superstitious method and key points combination method, and described the process of data processing and the extraction of human activity space data. The advantages and disadvantages were concluded through the comparison and analysis of the two methods. This study can...
This paper presents a rotor position estimated method of a five-phase IPM motor based on high-frequency sinusoidal voltage injection to improve the sensorless control system performance at low speed for electric vehicles. The high-frequency sinusoidal voltage is injected into the estimated rotor reference frame. The estimated rotor position and speed are obtained by detecting and processing high-frequency...
With the growth of mobile Internet, online health forums become more accessible for patient to health related discussions, subsequently host rich resources of drug-drug interactions (DDIs). However, traditional methods are not feasible for the large volume online data. They are designed for highly structured data sources such as clinical trials and spontaneous reporting systems, whose inherent limitations...
In view of the fact that ORB (the Oriented Fast and Rotated Brief) algorithm does not have scale invariance, an improved ORB algorithm, called SURB, was proposed combining the idea in Speed-up Robust Feature (SURF). Firstly, the Hessian matrix was used to detect feature points, which made the extracted feature points have scale invariance. Secondly, the ORB is used to describe feature points, which...
Compact behavioral models for silicon photonic Mach-Zehnder modulators (MZM) are developed for SPICE compatible electro-optical co-simulation. The model captures electro-optical interactions and dynamics, optical insertion loss and thermo-optical effect. Behavioral model simulation results and measurement results are shown to be a highly match. The model will be an indispensable part of the optical...
In the process of image stitching, Image stitching algorithms based on SIFT (Scale Invariant Feature Transform) feature have the robustness to the complex transformation between images. However, image stitching appears discontinuous and ghosting in the image registration. We proposed a fast image stitching algorithm to eliminate the seam line and ghosting. The algorithm through two cameras to capture...
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