A5103184093- Mathematical Analysis and Transform Methods
- Cooperative Communication and Network Coding
- Digital Filter Design and Implementation
- Image and Signal Denoising Methods
- Full-Duplex Wireless Communications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Industrial Technology and Control Systems
- Metamaterials and Metasurfaces Applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Wireless Communication Technologies
- Non-Destructive Testing Techniques
- Advanced Surface Polishing Techniques
- Power Systems and Technologies
- Advanced Wireless Communication Techniques
- Customer Service Quality and Loyalty
- Wireless Communication Networks Research
- Railway Systems and Energy Efficiency
- Advanced MIMO Systems Optimization
- Advanced X-ray and CT Imaging
- Nanomaterials and Printing Technologies
- Manufacturing Process and Optimization
- Polymer Science and Applications
- Peripheral Artery Disease Management
- Coal and Coke Industries Research
Xidian University
2024
Yanan University Affiliated Hospital
2016-2022
Chengdu University of Technology
2015-2021
Lanzhou Jiaotong University
2021
Shanxi University
2020
Beijing Institute of Technology
2016-2018
China Special Equipment Inspection and Research Institute
2018
Shandong Special Equipment Inspection Institute
2018
Wuhan University of Technology
2014
Institute of Information Engineering
2010-2012
Convolution and correlation operations are very important in signal processing community, as well sampling, filter design applications. In this study, the authors derive convolution theorems for two-dimensional linear canonical transform (2D LCT). Moreover, they utilise theorem to investigate sampling band limited 2D LCT domain. They also discuss multiplicative domain which has much lower computational load than method
Fractional cosine transform (FRCT) and fractional sine (FRST), which are closely related to the Fourier (FRFT), useful mathematical optical tool for signal processing. Many properties these transforms well investigated, but convolution theorems still be determined. In this paper, we derive (FRST) based on four novel operations. And then, a potential application two designing multiplicative filter is presented. Copyright © 2016 John Wiley & Sons, Ltd.
Regenerative braking energy (RBE) will be generated when high-speed train is in state, but the utilization rate of RBE generally low. To solve this problem, based on hybrid storage system (HESS), a scheme for storing and utilizing proposed. In scheme, HESS connected to railway traction power supply through conditioner (RPC) as interface circuit. The control strategy RPC proposed by analyzing compensation principle, then two media allocated. effectiveness verified simulation. findings...
Abstract We attempted to obtain a novel spongy hydrogel from aqueous Bombyx mori (B. Mori) sericin by using freeze-thaw method without any cross-linking reagent. The solution utilized was extracted silkworm cocoons boiling method, and showed continuous molecular weight distribution mainly 43 kDa 212 even higher. To optimize the conditions for preparation, efficiency of transformation were investigated changing concentration, freezing time, temperature frozen-thawed repetition. porous...
Three kinds of generalised convolution operations fractional cosine transform and sine are investigated, the corresponding theorems derived, which can be seen as generalisation classical results. The relationships these also discussed. Additionally, potential applications derived results in solving two integral equations discussed, explicit solutions convolution-type obtained.
An intelligent vascular stent was fabricated from a hydrophobic mesh tube, which cans in-situ release thrombolytic drugs only by an injection of nitroglycerin solution. The with 80# pore size has the highest property and most sensitive response performance after 3.00 wt% (Heptadecafluoro-1,1,2,2,-tetradecyl)trimethoxysilane (HFTES) treatment. This may be due to larger effective area more active fluorine groups surface treated HFTES. It proved that medicine could easily efficiently into...
In this paper, two types of fractional Fourier–Laplace convolutions are defined, and the corresponding convolution theorems associated with cosine transform (FRCT), sine (FRST) Laplace (LP) investigated in detail. The relationship between existing is given, Young's type theorem as well weighted inequality also obtained. As an application for convolution, filter design system convolution-type integral equations considered, computational complexity multiplicative analysed, explicit solutions these
Copper nanoparticles were fabricated in poly(vinyl alcohol)/polyacrylamide interpenetrating polymer networks (PVA/PAAm IPNs) by reduction of copper ions with sodium hypophosphite aqueous solutions. The PVA/PAAm IPNs hydrogels synthesized terms a simultaneous route the presence glutaraldehyde and N,N'-methylene-bis-acrylamide. swelling mechanical properties resulting PVA/PAAm/Cu nanocomposite investigated gravimetric method compression stress-strain test. results indicated that assembled IPN...
Metasurfaces have shown great potential in achieving low-cost and low-complexity signal enhancement redirection. Due to the low transmission power high attenuation issues of current high-frequency communication technology, it is necessary explore redirection technology based on metasurfaces. This paper presents an innovative metasurface for indoor redirection, featuring thin thickness, gain, wide-angle deflection. The integrates design principles a Fabry-Perot cavity (FPC) theory with Phase...
It is well known that opportunistic relaying combats wireless fading and network coding in multicast reduces retransmission times. In this article, a coded scheme based on (NCMR-OR) proposed, which combines the two above techniques to further improve efficiency of multi-hop multicast. The outage probability transmission bandwidth are deduced when destinations involved. numerical results show NCMR-OR more efficient than schemes employs either or
In this paper, industrial boilers are used as the research object, and Boilerentiodynamic polarization analysis of boiler steel is to study electrochemical corrosion behavior in water. The nature morphology samples were tested through experiments. shows: resistance will decrease significantly with increase operating time boilers. Dissolved solids Cl− water destroy original protective film, which its content main reason for deterioration material properties.
A novel process was developed to obtain high content of ceria powder directly from bastnasite mineral. The roasted with NaHCO 3 at 550 oC for 2 h, washed water and dilute HCl respectively remove impurities, finally calcined in air. TG-DTA, XRD, XRF, SEM used characterize the decomposition bastnasite, crystalline phase, chemical composition, morphology product. results showed that concentration solution most important factor leaching process, calcining temperature mineral should be controlled...
Cerium-rich rare earth oxides nanoparticles were extracted from bastnaesite concentrate by first leaching, alkali fusion with NaOH, and second leaching process.The effects of the hydrochloric acid concentration, mass ratio solid to liquid, temperature process，and NaOH amount, roasting time process systematically studied X-ray fluorescence spectrometry (XRF), diffraction (XRD) transmission electron microscope (TEM) analysis.The optimum parameters 2 molL -1 HCl solution, liquid 1: 5 75 o C,...
Abstract. This paper mainly introduces a device that can be used for underground pipeline survey task. Through the cameras installed on device, we obtain stereo synchronous shooting images, and then use method of close range photogrammetry to investigate measure objects. During working process, staff put camera into well control from ground. Greatly improve work efficiency, at same time avoid toxis gas damage people. The main content this includes three parts: hardware design, software...