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To satisfy diverse use cases and business models in fifth generation (5G) wireless communication, network slicing in fog radio access networks (F-RANs) is proposed, which provides a cost efficient networking in a convenient way. However, the resource management for network slices is challenging, especially when the edge caching is utilized to alleviate the fronthaul burden and reduce the delay. In...
This paper is related to the problem of stability analysis for delayed genetic regulatory networks (DGRNs) with reaction-diffusion terms under Dirichlet boundary conditions. The nonlinear regulation function of DGRNs is assumed to be of the Hill form. By introducing novel integral terms in Lyapunov-Krasovskii functional and employing Wirtinger-type integral in-equality, convex combination approach,...
This paper focuses on the problem of the stability analysis for T-S fuzzy systems with time delay. A novel Lyapunov-Krasovskii functional containing the fuzzy line-integral Lyapunov function is established. By employing some developed Wirtinger-based integral inequalities, less conservative stability criteria in terms of linear matrix inequalities (LMIs) are obtained. Two examples are given to verify...
Doubly selective channel estimation for a dynamic sparse channel in the large-scale multiple-input multiple-output (MIMO) systems has become a challenging problem. Considering the two parts: the large number of channel coefficients for MIMO systems requiring unaffordable pilot overheads, and the special feature of dynamic sparse channels: path delays change over time, we propose a differential block...
Channel estimation for millimeter wave (mmWave) systems over time-varying channels is a challenging problem, since a large number of channel coefficients need to be estimated. In this paper, by exploiting the sparsity of mmWave channel in the angular domain, we propose an efficient sparse channel estimation scheme based on compressive sensing (CS) theory. Specifically, considering that the angles...
This paper focus is concerned with the finite-time state estimation problem for delayed reaction-diffusion genetic regulatory networks (DRDGRNs) under Dirichlet boundary conditions. The aim of this paper is to design a finite-time state observer which is used to estimate the concentrations of mRNAs and proteins via available measurement outputs. By constructing a Lyapunov-Krasovskii functional (LKF)...
This paper is concerned with the absolute stability analysis of neutral-type Lur'e systems with interval time-varying delays and sector-bounded nonlinearity. By using the reciprocally convex technique, convex technique and Wirtinger-type integral inequality simultaneously, neutral-delay-range-dependent absolute stability criteria are presented. The obtained criteria can be regarded as an extensive...
This paper is concerned with the problem of the exponential passive filter design for neutral-type neural networks with time-varying mixed delays. First, a Luenberger-type filter is designed for estimating the network states. Second, by constructing an appropriate Lyapunov-Krasovskii functional and using the so-called Wirtinger-based integral inequality to estimate its derivative, a delay-range-dependent...
The high frequency resonant current in coupler would inevitable results in interaction of electromagnetic force (EMF), leading to short service life, poor security and low reliability of wireless power transmission (WPT). It may be worse when electromagnetic shielding (EMS) materials are used. The mechanism and characteristics of the EMF on various EMS materials are revealed. Based on Lorentz force...
Metal obstacles will be heated due to the eddying effect, if its location is between two coils belonging with the wireless power transfer system applying in the electric vehicle, and safety problems may occur easily. If metal obstacles is large, there will be efficiency decline, frequency detuning and other issues. So it is very important to detect the metal obstacles. In this paper, the theory about...
In the text classification, The similarity between the text need to be calculated, but the existing classification methods only consider the similarity between feature words and categories and does not involve the semantic similarity between feature words. In this paper, a new classification model LDA (Latent Dirichlet Allocation) — KNN (K-Nearest Neighbor) is proposed. LDA is used to solve the problem...
Non-volatile Memories (NVMs), such as PCM and ReRAM, have been widely proposed for future main memory design because of their low standby power, high storage density, fast access speed. However, these NVMs suffer from the write endurance problem. In order to prevent a malicious program from wearing out NVMs deliberately, researchers have proposed various wear-leveling methods, which remap logical...
Limited write endurance is one of major obstacles to adopt Phase Change Memories (PCMs) in practice as future main memory. Considering process variation (PV) and non-uniform write intensity, PCM cells with low endurance (i.e. weak cells) can wear out in seconds under intensive writes. To prolong PCMs' lifetime, many PV-aware wear leveling schemes have been proposed following a common idea: intensive...
Grey system forecasting theory model and nonlinear autoregressive (NAR) neural network model for forecasting the number of electric vehicles (EVs) in the city of Shenzhen are established in this paper separately. The number of EVs from 2006 to 2015 was used as the raw data in two models. The effectiveness of the two models are evaluated by various criteria. Afterward, the rationality, precision and...
In order to address the short distance transmission of inductive coupling wireless power transmission and the poor stability of power supply of near-field resonant wireless power transmission, achieving high-power, efficient and stable wireless power supply for dynamic load on meter level, the cooperative operating mode with tight-strong coupling is proposed and analysed. By establishing unified mathematical...
In order to study and to compare the disturbances caused by different typical metal obstacles in wireless power transmission system. Finite element method (FEM) with coupled electric circuit is adopted to obtain the system performance changes due to electromagnetic parameters differences among typical metal materials. By separating and comparing specific material parameters during operation, detailed...
The design theory and construction technology of the concrete faced rockfill dam (CFRD) had reached the advanced world level at the present stage in China. But the traditional measuring method is not suitable for the safety monitoring of the high concrete faced rockfill dam with the height of more than 300 m. By summarizing the basic technical requirements and key technical design of the inner deformation...
This paper describes the design of the integrated jet-pipe servo-valve with high reliability, including the design scheme, the dynamic sealing structure for pistons, the structure design and optimization for hydrodynamic force compensation, the key indicators and parameters calculation, simulation and experimental verification. According to the large valve port opening size, mechanical operability...
Racetrack memory is a promising non-volatile memory because of its ultra-high storage density. The data are stored along the tape-like cell, where a “shift” operation is used to move the data in a cell back and forth to be accessed. Shift operations suffer from “position error”, where the shift distance is incorrect. Previous work solved the error by position error correction code (p-ECC). However,...
Photodynamic therapy (PDT) is a safe treatment technology to treat malignant brain tumor, using laser to irradiate diseased tissue in the brain to treat malignant brain tumor. This paper designs the implanted miniature spiral receiving device (MSRD) operating at 796 kHz that receives transmitting coil (TX) energy through the resonant coupling power transmission (RCPT) to charge the Micro-LED (ML)...
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