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Output Tracking for One-Dimensional Wave Equation with Non-Collocated Control and Output Configuration

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Journal of Systems Science & Complexity 2020年第5期33卷 1469-1484页

作者： wei jing FENG Hongyinping School of Mathematical Sciences Shanxi UniversityTaiyuan 030006China

This paper considers output tracking for a one-dimensional wave equation with general disturbance which includes both internal nonlinear uncertainty and external *** performance output is non-collocated to the *** disturbance is estimated by an essentially extended state observer from active disturbance rejection control and the difficulty caused by the non-collocated configuration of control and output is overcome by a proper trajectory *** output feedback law is proposed to make the tracking error be convergent to zero exponentially as time goes to *** the same time,all states of the closed-loop system are shown to be uniformly *** simulation is also presented to validate the theoretical results.

关键词： Disturbance estimation output feedback output tracking wave equation

Application of Forearm FMG signals in Closed Loop Modality-matched Sensory Feedback Stimulation

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Journal of Bionic Engineering 2020年第5期17卷 899-908页

作者： jing wei Tan Yimesker Yihun Department of Mechanical Engineering Wichita State UniversityWichitaKansas 67260USA

This study is aimed at exploring a technology that can use the human physiological information,such as Force Myography(FMG)signals to provide sensory feedback to prosthetic hand *** is based on the principle that with the intent to move the prosthetic hand,the existing limbs in the arm recruit specific group of *** muscles react with a change in the cross-sectional area;piezoelectric sensors placed on these muscles will generate a voltage(FMG signals),in response to the change in muscle *** correlation between the amplitude of the FMG signals and intensity of pressure on fingertips during grasping is then computed and a dynamic relation(model)is established through system identification in *** estimated models generated a fitting accuracy of more than 80%.The model is then programmed into the Arduino microcontroller,so that a real-time and proportional force feedback is channeled to amputees through a micro *** such percentages of accuracy in sensory feedback without relying on touch sensors on the prosthetic hand that could be affected by mechanical wear and other interaction factors is *** advanced signal processing and classification techniques may also refine the findings to better capture and correlate the force variations with the sensory feedback.

关键词： FMG sensory feedback prosthetic hand bionic robot modality-matched sensory stimulation

文旅融合背景下历史文化园高质量发展研究——以包公故里文化园为例

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维普期刊数据库

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四川旅游学院学报 2025年第1期 40-46页

作者：项松林魏静安徽建筑大学公共管理学院安徽合肥230601

历史文化园是一种以历史文化为主题,通过景观、文物、文化活动等手段,再现和展示特定历史时期、历史名人或文化传统的公共空间,具有经济、文化、教育等价值。“以文兴旅,以旅彰文”,文旅融合发展的新模式为历史文化园的“出圈”与高质... 详细信息

历史文化园是一种以历史文化为主题,通过景观、文物、文化活动等手段,再现和展示特定历史时期、历史名人或文化传统的公共空间,具有经济、文化、教育等价值。“以文兴旅,以旅彰文”,文旅融合发展的新模式为历史文化园的“出圈”与高质量发展提供了新思路与新契机。包公故里文化园是新时代展示包公文化、弘扬廉政精神的重要基地,在文旅融合方面已有初步的探索与实践,但仍存在文化特色不鲜明、文旅业态不丰富、社会知名度不够高等问题。新发展阶段推进历史文化园高质量发展,要强化顶层设计,建构文旅融合新架构;优化产业链,铸造文旅融合新模式;创新宣传方式,提升文旅融合新品位;加强组织支撑,完善文旅融合新体制。

关键词：文旅融合历史文化园高质量发展包公故里文化园

An image compressed sensing algorithm based on adaptive nonlinear network

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Chinese Physics B 2020年第5期29卷 243-253页

作者： Yuan Guo wei Chen Shi-wei jing School of Computer and Control Engineering Qiqihar UniversityQiqihar 161006China

Traditional compressed sensing algorithm is used to reconstruct images by iteratively optimizing a small number of measured *** computation is complex and the reconstruction time is *** deep learning-based compressed sensing algorithm can greatly shorten the reconstruction time,but the algorithm emphasis is placed on reconstructing the network part *** random measurement matrix cannot measure the image features well,which leads the reconstructed image quality to be improved *** kinds of networks are proposed for solving this *** first one is ReconNet’s improved network IReconNet,which replaces the traditional linear random measurement matrix with an adaptive nonlinear measurement *** reconstruction quality and anti-noise performance are greatly *** the measured values extracted by the measurement network also retain the characteristics of image spatial information,the image is reconstructed by bilinear interpolation algorithm(Bilinear)and dilate *** a second network USDCNN is *** the BSD500 dataset,the sampling rates are 0.25,0.10,0.04,and 0.01,the average peak signal-noise ratio(PSNR)of USDCNN is 1.62 dB,1.31 dB,1.47 dB,and 1.95 dB higher than that of *** show the average reconstruction time of USDCNN is 0.2705 s,0.3671 s,0.3602 s,and 0.3929 s faster than that of ***,there is also a great advantage in anti-noise performance.

关键词： compressed sensing deep learning bilinear interpolation dilate convolution

Projectively flat Asanov Finsler metric

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第6期8卷 963-968页

作者： HAN jing-wei YU Yao-yong Department of Mathematics Zhejiang University Hangzhou 310027 China School of Science Hangzhou Dianzi University Hangzhou 310028 China

In this work, we study the Asanov Finsler metric F=α（β^2/α^2＋gβ/α＋1）^1/2exp{（G/2）arctan[β/（hα）＋G/2]}, where α=（αijy^iy^i）^1/2 is a Riemannian metric and β=by^i is a 1-fom, g∈（-2,2）, h=（1-g^2/4）^1/2, G=g/h. We give the necessary and sufficient condition for Asanov metric to be locally projectively flat, i.e., α is projectively flat and ,Sis parallel with respect to α. Moreover, we proved that the Douglas tensor of Asanov Finsler metric vanishes if and only if β is parallel with respect to α.

关键词： Exponential Finsler metric Projectively flat (α β)-metrics Douglas tensor

Astragalus membranaceus improves therapeutic efficacy of asthmatic children by regulating the balance of Treg/Th17 cells

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Chinese Journal of Natural Medicines 2019年第4期17卷 252-263页

作者： WANG wei LIU Qing-Bin jing wei Department of Pediatric Affiliated Hospital of Changchun University of Traditional Chinese Medicine

Astragalus membranaceus may be a potential therapy for childhood asthma but its driving mechanism remains elusive. The main components of A. membranaceus were identified by HPLC. The children with asthma remission were divided into two combination group(control group, the combination of budesonide and terbutaline) and A. membranaceus group(treatment group, the combination of budesonide, terbutaline and A. membranaceus). The therapeutic results were compared between two groups after 3-month *** peripheral blood mononuclear cells(PBMCs) were isolated from venous blood by using density gradient centrifugation on percoll. The levels of Fox P3, EGF-β, IL-17 and IL-23 from PBMCs and serum Ig E were measured. The relative percentage of Treg/Th17 cells was determined using flow cytometry. The main components of A. membranaceus were calycosin-7-O-glucoside, isoquercitrin, ononin, calycosin, quercetin, genistein, kaempferol, isorhamnetin and formononetin, all of which may contribute to asthma therapy. Lung function was significantly improved in the treatment group when compared with a control group(P < 0.05). The efficacy in preventing the occurrence of childhood asthma was higher in the treatment group than the control group(P < 0.05).The levels of Ig E, IL-17 and IL-23 were reduced significantly in the treatment group when compared with the control group, while the levels of FoxP3 and TGF-β were increased in the treatment group when compared with the control group(P < 0.05). A. membranaceus increased the percentage of Treg cells and reduced the percentage of Th17 cells. A. membranaceus is potential natural product for improving the therapeutic efficacy of combination therapy of budesonide and terbutaline for the children with asthma remission by modulating the balance of Treg/Th17 cells.

关键词： Astragalus membranaceus Asthma Children Treg/Th17 Budesonide Terbutaline

Transition metal clusters with precise numbers of atoms anchored on graphdiyne as multifunctional electrocatalysts for OER/ORR/HER:a computational study

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Rare Metals 2024年第7期43卷 3107-3117页

作者： Xin-Yang Liu jing-wei Liu Gang Li jing-Xiang Zhao College of Chemistry and Chemical Engineering Harbin Normal UniversityHarbin 150025China

Subnanometer metal clusters play an increasingly important role in heterogeneous catalysis due to their high catalytic activity and *** this work,by means of the density functional theory(DFT) calculations,the catalytic activities of transition metal clusters with precise numbers of atoms supported on graphdiyne(TM_(1-4)@GDY,TM=V,Cr,Mn,Fe,Co,Ni,Cu,Ru,Rh,Pd,Ir,Pt) were investigated for oxygen evolution reactions(OER),oxygen reduction reactions(ORR) and hydrogen evolution reactions(HER).The computed results reveal that the Pd_(2),Pd_(4) and Pt_(1) anchored graphdiyne can serve as trifunctional catalysts for OER/ORR/HER with the overpotentials of 0.49/0.37/0.06,0.45/0.33/0.12 and 0.37/0.43/0.01 V,respectively,while Pd_(1) and Pt_(2)@graphdiyne can exhibit excellent catalytic performance for water splitting(OER/HER) with the overpotentials of 0.55/0.17 and 0.43/0.03 *** addition,Ni_(1) and Pd_(3) anchored GDY can perform as bifunctional catalysts for metal-air cells(OER/ORR) and fuels cells(ORR/HER) with the overpotentials of 0.34/0.32 and 0.42/0.04 V,***,by precisely controlling the numbers of atoms in clusters,the TM_(1-4) anchored graphdiyne can serve as promising multifunctional electrocatalysts for OER/ORR/HER,which may provide an instructive strategy to design catalysts for the energy conversation and storage devices.

关键词： Density functional theory Graphdiyne Single-cluster catalysts Multifunctional electrocatalysts Overpotential

Melilite-derived mineral inclusions in chromite from the Gaositai complex: Implications for an extensional tectonic setting in Early Permian at the north North China Craton

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Science China Earth Sciences 2016年第3期59卷 583-589页

作者： SHAO Ji An TIAN wei wei Chun jing ZHU Wen Ping Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space Sciences Peking University

The Early Permian mafic-ultramafic concentrically zoned Gaositai intrusion at Chengde, on the northern margin of the North China Craton(NCC), is a cumulative complex emplaced along a giant fracture that penetrates deeply into the continental lithosphere. Melt inclusions are present in chromite crystals from the inner dunite and chromitite zones of the Gaositai complex. The melt inclusions have experienced post-trap crystallization and resulted in multiple mineral phases, including melilite, garnet, phlogopite, magnesite and apatite, which can indicate the liquidus minerals of the primitive magma. The characteristics of the melilite+melanite+clinopyxene assemblage indicate that the primary parental magma was highly undersaturated and derived from an alkali-rich mantle source. The crystallization of phlogopite, magnesite and apatite suggests a primary magma rich in K, H_2O and CO_2. When compared with experimental data, the primary magma of the Gaositai intrusion is concordant with a kamafugite magma originating from partial melting of enriched mantle with H_2O and CO_2 at pressures greater than 2.7 GPa. This magmatic process would have been related to extensional thinning of the continental lithosphere. The Gaositai primary magmas have high Nb/La ratios, which are similar to those of ocean island basalts, but different from arc-related magmas. This suggests that the northern margin of the NCC was not an active continental margin of the Paleo-Asian Ocean subduction zone during the Early Permian: an extensional tectonic setting during the emplacement of the Gaositai intrusion is more likely.

关键词： Melt Inclusion Melilite Primary melt Extension Continental lithosphere North China Craton

The moment generating function of pairwise velocity in the context of redshift space distortion

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Research in Astronomy and Astrophysics 2021年第2期21卷 31-36页

作者： jing-wei Zhao Jun-De Chen Department of Astronomy Shanghai Jiao Tong UniversityShanghai 200240China

We study the connections between the pairwise velocity moment generating function G(k_(‖),r)and redshift space distortion(RSD)*** k_(‖)is the Fourier wavevector parallel to the line of sight,and r is the pair separation *** demonstrate its usage by two examples.(1)Besides the known relations between G and the RSD power spectrum(and the correlation function),we propose a new RSD statistics Ps(k_(‖),r_(丄))whose connection to G is convenient to evaluate numerically.(2)We then develop a fast method to numerically evaluate G,and apply it to a high resolution N-body *** find that G(ln G)shows complicated dependence on k_(‖)beyond the linear and quadratic *** not only shows inaccuracy in some existing models and identifies sources of inaccuracy but also provides possible ways of improving the RSD ***,more comprehensive investigations on G are needed to fully explore the usage of G in RSD modeling.

关键词： cosmology dark energy-dark matter-large-scale structure of universe