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Polynomial dissipativity of proportional delayed BAM neural networks

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International Journal of Biomathematics 2020年第6期13卷 179-198页

作者： lin xing Liqun Zhou School of Mathematics Science Tianjin Normal UniversityTianjin 300387P.R.China

This paper pays close attention to the global polynomial dissipativity(GPD)for proportional delayed BAM neural networks(PDBAMNNs).The global exponential dissipativity(GED)and the global dissipativity(GD)are also talked *** the help of novel Lyapunov functionals and a generalized Halanay inequality,a set of dissipative criteria for such systems are led out,together with the global polynomial attracting set(GPAS)and the global attracting set(GAS).Further,the relationship among GPD,GED and GD is ***,a proposed theoretical condition is validated through a simulation experiment.

关键词： Global polynomial dissipativity BAM neural networks proportional delay a generalized Halanay inequality Lyapunov functionals

Modified constructions of binary sequences using multiplicative inverse

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Applied Mathematics(A Journal of Chinese Universities) 2008年第4期23卷 490-500页

作者： CHEN Zhi-xiong lin Zhi-xing Key Laboratory of Applied Mathematics Putian University Putian 351100 China Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou 350007China

Two new families of finite binary sequences are constructed using multiplicative inverse. The sequences are shown to have strong pseudorandom properties by using some estimates of certain exponential sums over finite fields. The constructions can be implemented fast since multiplicative inverse over finite fields can be computed in polynomial time.

关键词： stream cipher binary sequence multiplicative inverse pseudorandomness exponential sum

Constructing quasi-random subsets of Z_N by using elliptic curves

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Applied Mathematics(A Journal of Chinese Universities) 2012年第1期27卷 105-113页

作者： lin Zhi-xing CHEN Zhi-xiong Department of Mathematics Putian UniversityPutianFujian 351100China State Key Laboratory of Information Security Institute of SoftwareChinese Academy of SciencesBeijing 100049China

Let ε ： y^2 = x3 ＋ Ax ＋ B be an elliptic curve defined over the finite field Zp（p 〉 3） and G be a rational point of prime order N on ε. Define a subset of ZN, the residue class ring modulo N, asS：={n：n∈ZN,n≠0,（X（nG）/p）=1} where X（nG） denotes the x-axis of the rational points nC and （＊/P） is the Legendre symbol. Some explicit results on quasi-randomness of S are investigated. The construction depends on the intrinsic group structures of elliptic curves and character sums along elliptic curves play an important role in the proofs.

关键词： elliptic curve quasi-random subset quasi-randomness character sum Legendre symbol.

Demixing microwave signals using system-on-chip photonic processor

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Light(Science & Applications) 2024年第3期13卷 399-401页

作者： Sheng Gao Chu Wu xing lin Department of Electronic Engineering Tsinghua University100084 BeijingChina Beijing National Research Center for Information Science and Technology Tsinghua University100084 BeijingChina

The integrated photonic processor,co-packaged with electronic peripherals,is proposed for blind source separation of microwave signals,which separates signal-of-interest from dynamic interference with real-time adapta... 详细信息

关键词： processor microwave mixing

Structural, magnetic and electronic properties of the iron-chalcogenide AxFe2-ySe2 （A=K, Cs, Rb, and TI, etc.） superconductors

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Frontiers of physics 2011年第4期6卷 410-428页

作者： Dai-xiang Mou lin Zhao xing-jiang Zhou National Laboratory for Superconductivity Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

The latest discovery of a new iron-chalcogenide superconductor AXFe2-ySe2 （A =K, Cs, Rb, and Tl, etc.） has attracted much attention due to a number of its unique characteristics, such as the possible insulating state of the parent compound, the existence of Fe-vacancy and its ordering, a new form of magnetic structure and its interplay with superconductivity, and the peculiar electronic structures that are distinct from other Fe-based superconductors. In this paper, we present a brief review on the structural, magnetic and electronic properties of this new superconductor, with an emphasis on the electronic structure and superconducting gap. Issues and future perspectives are discussed at the end of the paper.

关键词： superconductor iron-chalcogenides electronic structure photoemission Fermi science superconducting gap crystal structure magnetic structure

Numerical analysis of seabed dynamic response in vicinity of mono-pile under wave-current loading

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Water Science and Engineering 2020年第1期13卷 74-82页

作者： Jie lin Ji-sheng Zhang Ke Sun xing-lin Wei Ya-kun Guo Key Laboratory of Coastal Disaster and Defence(Hohai University) Ministry of EducationNanjing 210098China College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Faculty of Engineering&Informatics University of BradfordBradford BD71DPUK

Pile foundations have been widely used in offshore *** this study,a three-dimensional numerical model was used to investigate the seabed response around a mono-pile under wave-current ***-averaged Navier-Stokes equations were used to simulate the flow field,and Biot's consolidation equations were used for simulating the response of a porous *** pore water pressure within soil and the effective stress along the depth of the seabed were simulated for various current velocities,with currents traveling either along or against the *** indicate that the current has a significant effect on the effective stress and the pore water pressure distributions,which increases with the current velocity,and that the current traveling against the wave increases the liquefaction depth of the porous seabed.

关键词： Numerical simulation Dynamic response Wave-current loading Mono-pile foundation Porous seabed

Two Novel Cobalt(Ⅱ)/nickel(Ⅱ) Metal-organic Coordination Polymers Based on Flexible Polycarboxylic Acids and Rigid Bis(imidazole) Mix Ligands

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Chinese Journal of Structural Chemistry 2020年第1期39卷 147-153,5页

作者： YANG Ming-xing YAN Zhi-Wei CHEN Li-Juan lin xing-Ye lin Shen College of Chemistry and Materials Science Fujian Normal UniversityFuzhouFujian 350007China

Two novel metal-organic coordination compounds, [Co2(OH)(chdc)1.5(bibp)]n(1) and [Ni(chdc)(bib)]n·2nH2O(2, H2chdc=1,4-cyclohexanedicarboxylic acid, bibp=4,4’-bis(1-imidazolyl)biphenyl, bib=1,4-bis(1-imidazolyl)benzene), were synthesized and characterized. Compound 1 crystallizes in monoclinic system, space group PI with a=10.591(3), b=11.146(3), c=12.264(3) ?, α=89.009(6), β=88.397(4), γ=87.823(3)°, V=1446.0(6) ?3, Dc=1.554 g/cm3, C30H30Co2N4O7, Mr=676.44, F(000)=696, μ(MoKα)=1.202 mm-1, Z=2, R=0.0278 and wR=0.0718. In 1, it contains an interesting tetranuclear Co(Ⅱ) cluster. The neighboring {Co4} clusters are linked by chdc2-ligands to generate a 2D network. The bibp ligands connect adjacent layers to form an open 3 D metal-organic framework. Compound 2 crystallizes in monoclinic system, space group P21/n with a=8.8110(1), b=19.369(1), c=12.7379(4) ?, β=102.952(5)o, V=2118.5(2) ?3, Dc=1.490 g/cm3, C20H24N4NiO6, Mr=475.14, F(000)=992, μ(MoKα)=0.961 mm-1, Z=4, R=0.0306 and wR=0.0738. In 2, each deprotonated chdc 2-ligand links two Ni(Ⅱ) atoms to generate a 1 D chain along the a axis. The adjacent chains are further connected by bib ligands to build up an interesting two-dimensional network. Compound 1 shows antiferromagnetic property.

关键词： coordination polymer magnetic properties cobalt(Ⅱ)complex nickel(Ⅱ)complex bis(imidazole)ligand

Effect of epidermal growth factor on follicle-stimulating hormone-induced proliferation of granulosa cells from chicken prehierarchical follicles

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第11期12卷 875-883页

作者： Jin-xing lin Yu-dong JIA Cai-qiao ZHANG Key Laboratory of Animal Epidemic Etiology ＆ Immunological Prevention of the Ministry of Agriculture Department of Veterinary Medicine College of Animal Sciences Zhejiang University Hangzhou 310058 China

The development of ovarian follicular cells is controlled by multiple circulating and local hormones and factors, including follicle-stimulating hormone （FSH） and epidermal growth factor （EGF）. In this study, the stagespecific effect of EGF on FSH-induced proliferation of granulosa cells was evaluated in the ovarian follicles of egg-laying chickens. Results showed that EGF and its receptor （EGFR） mRNAs displayed a high expression in granulosa cells from the prehierarchical follicles, including the large white follicle （LWF） and small yellow follicle （SYF）, and thereafter the expression decreased markedly to the stage of the largest preovulatory follicle. SYF represents a turning point of EGF/EGFR mRNA expression during follicle selection. Subsequently the granulosa cells from SYF were cultured to reveal the mediation of EGF in FSH action. Cell proliferation was remarkably increased by treatment with either EGF or FSH （0.1-100 ng/ml）. This result was confirmed by elevated proliferating cell nuclear antigen （PCNA） expression and decreased cell apoptosis. Furthermore, EGF-induced cell proliferation was accompanied by increased mRNA expressions of EGFR, FSH receptor, and the cell cycle-regulating genes （cyclins D1 and El, cyclin-dependent kinases 2 and 6） as well as decreased expression of luteinizing hormone receptor mRNA. However, the EGF or FSH-elicited effect was reversed by simultaneous treatment with an EGFR inhibitor AG1478. In conclusion, EGF and EGFR expressions manifested stage-specific changes during follicular development and EGF mediated FSH-induced cell proliferation and retarded cell differentiation in the prehierarchical follicles. These expressions thus stimulated follicular growth before selection in the egg-laying chicken.

关键词： Epidermal growth factor Follicle-stimulating hormone Granulosa cell Proliferation Chicken

Heterostructure-Engineered Semiconductor Quantum Dots toward Photocatalyzed-Redox Cooperative Coupling Reaction

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Research 2023年第4期2023卷 207-217页

作者： lin-xing Zhang Ming-Yu Qi Zi-Rong Tang Yi-Jun Xu College of Chemistry State Key Laboratory of Photocatalysis on Energy and EnvironmentFuzhou UniversityFuzhou 350116P.R.China

Semiconductor quantum dots have been emerging as one of the most ideal materials for artificial ***,we report the assembled ZnS-CdS hybrid heterostructure for efficient coupling cooperative redox catalysis toward the oxidation of 1-phenylethanol to acetophenone/2,3-diphenyl-2,3-butanediol(pinacol)integrated with the reduction of protons to *** strong interaction and typical type-I band-position alignment between CdS quantum dots and ZnS quantum dots result in efficient separation and transfer of electron-hole pairs,thus distinctly enhancing the coupled photocatalyzed-redox activity and *** optimal ZnS-CdS hybrid also delivers a superior performance for various aromatic alcohol coupling photoredox reaction,and the ratio of electrons and holes consumed in such redox reaction is close to 1.0,indicating a high atom economy of cooperative coupling *** addition,by recycling the scattered light in the near field of a SiO_(2)sphere,the SiO_(2)-supported ZnS-CdS(denoted as ZnS-CdS/SiO_(2))catalyst can further achieve a 3.5-fold higher yield than ZnS-CdS *** research clarifies that the oxidation of 1-phenylethanol proceeds through the pivotal radical intermediates of•C(CH_(3))(OH)*** work is expected to promote the rational design of semiconductor quantum dots-based heterostructured catalysts for coupling photoredox catalysis in organic synthesis and clean fuels production.

关键词： coupling catalysis Engine