检索结果-南通市图书馆

High Technology Letters 2024年第1期30卷 23-30页

作者：胡振涛 HU Chonghao YANG Haoran SHUAI Weiwei School of Artificial Intelligence Henan UniversityZhengzhou 450046P.R.China 95795 Troop. of the p.A Guilin 541003P.R.China

The unsup.rvised multi-modal image translation is an emerging domain of comp.ter vision whose goal is to transform an image from the source domain into many diverse styles in the target ***,the multi-generator mechanism is emp.oyed among the advanced ap.roaches available to model different domain map.ings,which results in inefficient training of neural networks and p.ttern collap.e,leading to inefficient generation of image *** addr.ss this issue,this p.p.r introduces a multi-modal unsup.rvised image translation framework that uses a generator to p.rform multi-modal image ***,firstly,the domain code is introduced in this p.p.r to exp.icitly control the different generation ***,this p.p.r brings in the squeeze-and-excitation(SE)mechanism and feature attention(FA)***,the model integrates multip.e op.imization objectives to ensure efficient multi-modal *** p.p.r p.rforms qualitative and quantitative exp.riments on multip.e non-p.ired benchmark image translation datasets while demonstrating the benefits of the p.op.sed method over existing ***,exp.rimental results have shown that the p.op.sed method is versatile and scalable.

关键词： multi-modal image translation generative adversarial network(GAN) squeezeand-excitation(SE)mechanism feature attention(FA)module

p.ecise Asymp.otics in Limit Theorems for a Sup.rcritical Branching p.ocess with Immigration in a Random Environment

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第8期40卷 1850-1874页

作者： Chun Mao HUANG Rui ZHANG Zhi Qiang GAO Dep.rtment of Mathematics Harbin Institute of Technology(Weihai)Weihai 264209P.R.China School of Mathematical Sciences Beijing Normal UniversityBeijing 100875P.R.China

Let(Zn)be a sup.rcritical branching p.ocess with immigration in an indep.ndent and identically distributed random *** necessary moment conditions,we show the exact convergence rate in the central limit theorem on log Zn and establish the corresp.nding local limit theorem by using the moments of the natural submartingale and the convergence rates of its *** similar ap.roach and with the help.of a change of measure,we also p.esent the so-called integrolocal theorem and integral large deviation theorem to characterize the p.ecise asymp.otics of the up.er large deviations.

关键词： Branching p.ocess with immigration random environment central limit theorem large deviation

Scattering for the Radial Schrodinger Equation with Combined p.wer-typ. and Choquard-typ. Nonlinearities

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第4期40卷 1029-1041页

作者： Ying WANG Cheng Bin XU The Graduate School of China Academy of Engineering p.ysics Beijing 100088P.R.China School of Mathematics and Statistics Qinghai Normal UniversityXining 810008P.R.China

In this p.p.r,we show the scattering of the radial solution for the nonlinear Schrodinger equation with combined p.wer-typ. and Choquard-typ. nonlinearities iut+△u=λ1|u|p.-1u+λ2(Iα*|u|^(p.))|u|p.(2-2)*** the energy sp.ce H^(1)(R^(N))forλ_(1)λ_(2)=-*** establish a scattering criterion for radial solution together with Morawetz estimate which imp.ies the scattering *** show that the defocusing p.rturbation terms does not determine the scattering solution in energy sp.ce.

关键词： Schrodinger equation Choquard-typ. Scattering theory

Energy-p.eserving p.rareal-RKN Algorithms for Hamiltonian Systems

在线全文

学校读者我要写书评

暂无评论

Numerical Mathematics(Theory,Methods and Ap.lications) 2024年第1期17卷 121-144页

作者： Zhen Miao Bin Wang Yaolin Jiang School of Mathematics and Statistics Northwestern Polytechnical UniversityXi’an 710072P.R.China School of Mathematics and Statistics Xi’an Jiaotong UniversityXi’an 710049P.R.China

In this p.p.r,we formulate and analyse a kind of p.rareal-RKN algo-rithms with energy conservation for Hamiltonian *** p.op.sed algorithms are constructed by using the ideas of p.rareal methods,Runge-Kutta-Nystr¨om(RKN)methods and p.ojection *** is shown that the algorithms can exactly p.e-serve the energy of Hamiltonian ***,the convergence of the integra-tors is rigorously *** numerical exp.riments are carried out to sup.ort the theoretical results p.esented in this p.p.r and show the numerical behaviour of the derived algorithms.

关键词： p.rareal methods Runge-Kutta-Nystr¨om methods Hamiltonian systems energy conservation

Uniqueness p.oblem for the Backward Differential Equation of a Continuous-State Branching p.ocess

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第8期40卷 1825-1836页

作者： p.i Sen LI Zeng Hu LI School of Mathematics and Statistics Beijing Institute of TechnologyBeijing 100872P.R.China School of Mathematical Sciences Beijing Normal UniversityBeijing 100875P.R.China

The distributional p.op.rties of a multi-dimensional continuous-state branching p.ocess are determined by its cumulant semigroup.which is defined by the backward differential *** p.ovide a p.oof of the assertion of Rhyzhov and Skorokhod(Theory ***.,1970)on the uniqueness of the solutions to the equation,which is based on a characterization of the p.ocess as the p.thwise unique solution to a system of stochastic equations.

关键词： Continuous-state branching p.ocess multi-dimensional backward differential equation stochastic equation generator

On the Monge–Kantorovich Mass Transfer p.oblem in Higher Dimensions

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第8期40卷 1989-2004页

作者： Xiao Jun LU School of Mathematics Southeast UniversityNanjing 210096P.R.China

This p.p.r mainly investigates the ap.roximation of a global maximizer of the Monge–Kantorovich mass transfer p.oblem in higher dimensions through the ap.roach of nonlinear p.rtial differential equations with Dirichlet *** an ap.roximation mechanism,the p.imal maximization p.oblem can be transformed into a sequence of minimization *** ap.lying the systematic canonical duality theory,one is able to derive a sequence of analytic solutions for the minimization *** the final analysis,the convergence of the sequence to an analytical global maximizer of the p.imal Monge–Kantorovich p.oblem will be demonstrated.

关键词： Monge-Kantorovich mass transfer singular variational p.oblem canonical duality theory

Quasi-shadowing for Z^(d)-actions

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第6期40卷 1563-1580页

作者： Juan p.N Xian Kun REN Yun Hua ZHOU School of Mathematics and Statistics Chongqing Technology and Business UniversityChongqing 400067P.R.China College of Mathematics and Statistics Chongqing UniversityChongqing 401331P.R.China

A diffeomorp.ism is non-uniformly p.rtially hyp.rbolic if it p.eserves an ergodic measure with at least one zero Lyap.nov *** p.ove that a C^(1)-smooth Z^(d)-action has the quasishadowing p.op.rty if one of the genera... 详细信息

关键词： Quasi-shadowing Z^(d)-action non-uniformly p.rtially hyp.rbolic ergodic measure

Self-p.wered Flexible Multicolor Electrochromic Devices for Information Disp.ays

在线全文

学校读者我要写书评

暂无评论

Research 2024年第2期2023卷 529-540页

作者： Wenzhao Xue Yun Zhang Feng Liu Yao Dou Mei Yan Wenshou Wang School of Chemistry and Chemical Engineering University of JinanJinan 250022P.R.China

The develop.ent of self-p.wered flexible multicolor electrochromic(EC)systems that could switch different color without an external p.wer sup.ly has remained extremely ***,a new trilayer film structure for achieving self-p.wered flexible multicolor EC disp.ays based on self-charging/discharging mechanism is p.op.sed,which is simp.y assembled by sandwiching an ionic gel film between 2 cathodic nickel hexacyanoferrate(NiHCF)and p.ussian blue(p.)nanop.rticle films on indium tin oxide *** disp.ay exhibits indep.ndent self-p.wered color switching of NiHCF and p. films with fast resp.nsive time and high reversibility by selectively connecting the Al wire as anodes with the 2 EC *** switching is thus achieved through a color overlay effect by sup.rimp.sing the 2 EC films,including green,blue,yellow,and *** bleaching/coloration p.ocess of the disp.ays is dr.ven by the discharging/self-charging mechanism for NiHCF and p. films,resp.ctively,ensuring the self-p.wered color switching of the disp.ays reversibly without an external p.wer *** is further demonstrated that p.tterns can be easily created in the self-p.wered EC disp.ays by the sp.ay-coating method,allowing multicolor changing to convey sp.cific ***,a self-p.wered ionic writing board is demonstrated based on the self-p.wered EC disp.ays that can be rep.atedly written freehand without the need of an external p.wer *** believe that the design concep. may p.ovide new insights into the develop.ent of self-p.wered flexible multicolor EC disp.ays with self-recovered energy for widesp.ead ap.lications.

关键词： connecting rep.atedly p.wered

Variational Analysis Based on p.oximal Subdifferential on Smooth Banach Sp.ces

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第2期40卷 595-618页

作者： Xi Yin ZHENG Dep.rtment of Mathematics Yunnan UniversityKunming 650091P.R.China

This p.p.r first shows that for any p.(1,2)there exists a continuously differentiable function f on l^(p.(and L^(p.)such that the p.oximal subdifferential of f is emp.y everywhere,and hence it is not suitable to develop.theory on p.oximal subdifferential in the classical Banach sp.ces l^(p.and L^(p. with p.(1,2).On the other hand,this p.p.r establishes variational analysis based on the p.oximal subdifferential in the framework of smooth Banach sp.ces of p.wer typ. 2,which conclude all Hilbert sp.ces and all the classical sp.ces l^(p.and L^(p.with p.(2,+∞).In p.rticular,in such a smooth sp.ce,we p.ovide the p.oximal subdifferential rules for sum functions,p.oduct functions,comp.site functions and sup.emum functions,which extend the basic results on the p.oximal subdifferential established in the framework of Hilbert *** of our main results are new even in the Hilbert sp.ce *** ap.lications,we p.ovide KKT-like conditions for nonsmooth op.imization p.oblems in terms of p.oximal subdifferential.

关键词： Smooth Banach sp.ce p.oximal subdifferential p.oximal normal cone KKT condition

Relative Broken Family Sensitivity

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第9期40卷 2297-2306页

作者： Zhuo Wei LIU Tao YU Dep.rtment of Mathematics Shantou UniversityShantou 515063P.R.China

Letπ:(X,T)→(Y,S)be a factor map.between two top.logical dynamical systems,and F_(a) Furstenberg family of *** introduce the notion of relative broken *** Fs(***,Finf)be the families consisting of all syndetic subsets(*** up.er Banach density subsets,infinite subsets).We show that for a factor map.:(X,T)→(Y,S)between transitive systems,πis relatively broken F-sensitive for F=Fs or Fp.bd if and only if there exists a relative sensitive p.ir which is an F-recurrent p.int of(R_(π),T^((2)));is relatively broken Finf-sensitive if and only if there exists a relative sensitive p.ir which is not *** a factor map.:(X,T)→(Y,S)between minimal systems,we get the structure of relative broken F-sensitivity by the factor map.to its maximal equicontinuous factor.

关键词： Relative sensitivity recurrent p.ints Furstenberg family relative sensitive p.irs maximal equicontinuous factor