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With the rapid development of mobile apps, the availability of a large number of mobile apps in application stores brings challenges to locate appropriate apps for users. Providing accurate mobile app recommendation for users becomes an imperative task. Conventional approaches mainly focus on learning users' preferences and app features to predict the user-app ratings. However, most of them did not...
Networked Distributed Model Predictive Control (NDMPC) is an effective control strategy which is usually used to control large-scale industrial processes with multi-variable coupling. However, data transmission and information exchange are carried out through the network in this control system, it will inevitably appear the phenomenon of network time-varying delay and data packet dropout, which will...
With the development of deep sequencing technology, isomiRs (isoform of miRNA) are consistently observed in a variety of cell types, tissues, and different cell development stages. miRNA isoforms as the products of miRNA genes, are variants which are different from mature miRNAs in length and position. Recently, many studies emphasized on isomiR and found its subtypes are differentially expression...
A coherent multi-wavelength Brillouin random fiber laser with randomly distributed Rayleigh scattering feedback was demonstrated. Up to six orders Stokes random lasing radiations were generated with an unprecedented high optical signal-to-noise ratio of ∼47dB.
We report that transmission of pulses in tapered dual-core As2Se3-PMMA fibers induces permanent effective group-velocity matching between the field propagating in the fiber.
A surface plasmon resonance cavity on an optical fiber end-facet is designed and demonstrated for ultrasound detection. A noise equivalent pressure of 25 KPa over 20 MHz, almost omni-directional response and stable performance are reported.
To avoid the stability problem of grid connected inverter caused by the conventional phase locked loop (PLL), the direct power control of voltage source inverter in virtual synchronous reference frame without PLL is investigated considering grid voltage disturbance in the paper. Based on the small signal analysis methods, comparison between conventional PLL and no PLL is made. It can be found that...
In the operation of grid-connected photovoltaic power stations, a large amount of harmonic current is injected into distribution network, which reduces the power quality of distribution network. In the paper, the Static Var Generator (SVG) is added to the outlet of the photovoltaic power station, by using the feedforward control strategy for the voltage, SVG can effectively suppress the harmonic current...
The transient electromagnetic-thermal simulation of Debye media is carried out using the alternating-direction-implicit (ADI) method. The frequency-dependent and temperature-dependent properties of the Debye medium are taken into account in the modeling. The expression of transient power loss density of the Debye medium is given. The unconditionally stable ADI scheme is employed for both the electromagnetic...
This paper considers the observer design problem for the SISO Lur'e differential inclusion system. The feature of the observer lies that it does not hold any set-valued mappings. Different from the current works, the system with relative degree more than one is studied in this paper, and the observer is constructed by the filtering transformation method. A numerical example is simulated to show the...
This design provides a kind of double CPU communication between solution, using PROTUES software structures, basic simulation circuit, the load KEIL software written in HEX file, USES the RS232 interface standard, simple circuit structure, solve the problem of the complicated parallel communication lines, applies to close range, low rate of communication occasions.
This paper briefly introduces the charging and discharging characteristics of electric vehicles, and calculates the charging and discharging load of electric vehicles by Monte Carlo simulation method. A dynamic scene analysis method is used to deal with the stochastic uncertainty of electric vehicles charging and discharging, and the dynamic neural network is used to predict the load. The paper uses...
In a convolutional neural network (CNN), convolution calculation can account for about 90% of the total processing work. This paper presents the design of a convolution hardware accelerator (CHA) which can support efficient matrix multiplication to speed up the convolution calculation. In our experiment, when a RISC-V Rocket processor is used to simulate the operation of a CNN for image classification,...
Radiomics can convert digital images to mineable data by extracting a huge number of image features. Because of the high dimensions of radiomics features, feature selection is a very important step which affects the performance of the final prediction or classification. In this paper, we propose a feature selection criterion for radiomics analysis of glioma based on Magnetic Resonance Image (MRI)...
A new speckle reduction algorithm is presented in this paper to improve the visualization of synthetic aperture radar (SAR) images. The algorithm contains two steps. First, we propose a speckle reduction filter. This filter use different smoothing effect according to scene of sub-window. So it can maintain the details while noise suppression. Second, we propose a method to enhance the details. We...
In this paper, we demonstrate an achievable implementation of Doppler parameters estimation engine. Taking advantage of FPGA, a highly parallelized and reconfigurable structure with a unified calculation is adopted. We build a prototype using single off-the-shelf Xilinx XC6VSX315T FPGA to verify the proposed method in a 16384 ×16384 SAR imaging process. The experiment result can achieve more than...
The middle wave infrared remote (MWIR) images has complex scene information, low contrast ratios, and bipolar problems. To solve these problems, we propose a method that uses pyramid integral image reconstruction algorithm achieving sea-land automation segmentation. First, we calculate a gradient feature map (GFM), which extracts the structural information from an MWIR scene. Then, the GFM uses for...
Cardiac tissue engineering aims to reconstruct functional construction with resembling native tissue to replace damaged myocardium. To mimic native myocardium, cells with phenotypes of mature cardiomyocytes and scaffolds with elastic, electro-conductive, highly porous, and biodegradable plays two major roles. So far, although a number of cell types have been evaluated in the reports of cardiac repair,...
Smart-home is becoming increasingly popular in recent years, and it introduces a new content retrieval paradigm - delay-insensitive downloading. In this new paradigm, users do not require the content retrieval task to finish as soon as possible, but only set a deadline for it. We study the role of this paradigm in the traffic engineering of a chunk-based cloud storage service. We propose that it could...
In this paper, we propose an adaptive stabilizer to solve the stability problem of single inverted pendulum system. The stabilizer, which consists of a nested saturation feedback controller and a logic-based online-tuning mechanism, is designed for a class of nonlinear feed-forward systems. The function of the online-tuning mechanism is to adjust the level of saturation in the controller according...
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