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Local Linear Convergence of an ADMM-Type Splitting Framework for Equality Constrained Optimization

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Journal of the Operations Research Society of China 2021年第2期9卷 307-319页

作者： jun-Feng Yang yin Zhang Department of Mathematics Nanjing UniversityNanjing 210023China Institute for Data and Decision Analytics The Chinese University of Hong KongShenzhen 518172China

We establish local convergence results for a generic algorithmic framework for solving a wide class of equality constrained optimization *** framework is based on applying a splitting scheme to the augmented Lagrangian function that includes as a special case the well-known alternating direction method of multipliers(ADMM).Our local convergence analysis is free of the usual restrictions on ADMM-like methods,such as convexity,block separability or linearity of *** offers a much-needed theoretical justification to the widespread practice of applying ADMM-like methods to nonconvex optimization problems.

关键词： Alternating direction method of multipliers Nonlinear splitting Stationary iterations Spectral radius Local linear convergence

Global Existence of the Radially Symmetric Strong Solution to Navier-Stokes-Poisson Equations for Isentropic Compressible Fluids

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Acta Mathematica Sinica,English Series 2009年第10期25卷 1703-1720页

作者： jun Ping yin Zhong TAN Department of Mathematics Xiamen University Xiamen 361005 P. R. China

We prove the two existence results of the radially symmetric strong solutions to the Navier- Stokes-Poisson equations for isentropic compressible fluids. The important point in this paper is that the initial density i... 详细信息

关键词： Navier-Stokes-Poisson equations annular domain radially symmetric solution strong solution existence

Restarted Full Orthogonalization Method with Deflation for Shifted Linear Systems

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Numerical Mathematics(Theory,Methods and Applications) 2014年第3期7卷 399-412页

作者： jun-Feng yin Guo-Jian yin Department of Mathematics Tongji University1239 Siping RoadShanghai 200092P.R.China Department of Mathematics The Chinese University of Hong KongShatinNTHong Kong

In this paper,we study shifted restated full orthogonalization method with deflation for simultaneously solving a number of shifted systems of linear *** analysis shows that with the deflation technique,the new residual of shifted restarted FOM is still collinear with each ***,the new approach can solve the shifted systems simultaneously based on the same Krylov *** experiments show that the deflation technique can significantly improve the convergence performance of shifted restarted FOM.

关键词： Shifted linear systems full orthogonalization method restarted Arnoldi process deflation collinear

Two-Dimensional Cathode Materials for Aqueous Rechargeable Zinc-Ion Batteries

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Chinese Journal of Chemistry 2022年第8期40卷 973-988页

作者： Yurou Wang jun yin Jian Zhu School of Materials Science and Engineering Nankai UniversityTianjin 300350China

Rechargeable aqueous zinc-ion batteries(ZIBs)featuring low cost,superior performance,and environmental benignity have attracted dramatic atten-tion as a promising alternative energy storage system to lithium-ion ***,the development of ZIBs is still hindered by the limited selection of cathode materials due to the large solvation sheath and charge density of Zn^(2+).Two-dimensional(2D)materials have attracted extraor-dinary attention owing to the unique layered structure bonded by weak van der Waals'forces,which makes them promising host materials for Zn^(2+)intercalation/*** this review,the synthesis and properties of 2D materials for cathodes in ZIBs are ***,various re-ports on 2D materials as ZIBs cathodes are *** key strategies to elicit improved Zn2+storage abilities:defect engineering,hetero-structure engineering,and interlayer engineering,are ***,this review ends with perspectives relating to the challenges and opportu-nities of 2D materials-based ZIBs.

关键词： Two-dimensional materials Zinc-ion batteries Electrochemistry Nanostructures Energy conversion

The Einstein-Khler Metric on the Third Cartan-Hartogs Domain

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Acta Mathematica Sinica,English Series 2008年第10期24卷 1703-1712页

作者： wen Juan ZHANG Wei Ping yin Department of Mathematics Beijing Institute of Technology Beijing 100081 P. R. China Department of Mathematics Capital Normal University Beijing 100037 P. R. China

In this paper we discuss the Einstein-Kahler metric on the third Cartan-Hartogs domain Y111（n, q; K）. Firstly we get the complete Einstein Kahler metric with explicit form on Y111（n, q; K） in the case of K=q/2 ＋ 1/q-1. Secondly we obtain the holomorphic sectional curvature under this metric and get the sharp estimate for this holomorphic curvature. Finally we prove that the complete Einstein-Kahler metric is equivalent to the Bergman metric on Y111（n, q; K） in case of K=q/2＋1/q-1.

关键词： Einstein Kahler metric holomorphic sectional curvature holomorphic automorphism group

Trends on physical understanding of bioink printability

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Bio-Design and Manufacturing 2019年第1期2卷 50-54页

作者： jun yin Dengke Zhao Jingyi Liu The State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical Engineering Zhejiang University Hangzhou 310028 China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical Engineering. Zhejiang University Hangzhou 310028. China

Recently, 3D bioprinting is developed as an emerging approach, increasingly applied to materials for healthcare;while, the precise placement of cells and materials, and the shape fidelity of forming constructs is of great importance for successful application of 3D bioprinting. Research efforts have been made to develop new bioinks as "raw materials" with better biocompatibility and biofunctionality, but the printability of bioinks is largely ignored and still needs to be carefully examined to enable robotic bioprinting. This article aims to introduce a recent published review (Appl. Phys. Rev. 2018, 5, 041304) on the evaluation of bioink printability by Huang's research group from University of Florida. Huang et al. comprehensively reviewed the bioink printability based on the physical point of view during inkjet printing, laser printing, and microextrusion, and a series of self-consistent time scales and dimensi on less quantities were utilized to physically understand and evaluate bioink printability. This article would be helpful to know the trends on physical understanding of bioink printability.

关键词： Bioink 3D bioprinting Printability Timescale Dimensionless numbers Phase diagram

Organelle targetable fluorescent probes for hydrogen peroxide

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Chinese Chemical Letters 2019年第10期30卷 1834-1842页

作者： ying wen Fangjun Huo Caixia yin Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education Key Laboratory of Materials for Energy Conversion and Storage of Shanxi ProvinceInstitute of Molecular ScienceShanxi UniversityTaiyuan 030006China Research Institute of Applied Chemistry Shanxi UniversityTaiyuan 030006China

Hydrogen peroxide(H2 O2), as important products of oxygen metabolism, plays an important role in many biological processes, such as immune responses and cellular signal transduction. However, abnormal production of H2 O2 can damage cellular biomolecules, which was closely associated with many ***, it is urgent to monitor the level change of H2 O2 in living cells, particularly at subcellular *** this end, a wide variety of H2 O2 fluorescent probes have been designed, developed and applied for imaging of H2 O2 in subcellular levels. In this review, we highlight the representative cases of H2 O2 fluorescent probes with mitochondria, nuclei and lysosomes-targetable ability. The review contains organelle target strategies, structures, fluorescence behavior and biological applications of these probes.

关键词： Hydrogen peroxide Fluorescence probes Mitochondria target Nuclei target Lysosomes target Living cells

Manipulation of successive crystalline transformations to control electron transfer and switchable functions

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National Science Review 2018年第4期5卷 507-515页

作者： Cheng-Qi Jiao wen-Jing Jiang yin-Shan Meng wen wen Liang Zhao jun-Li Wang Ji-Xiang Hu Gagik G.Gurzadyan Chun-ying Duan Tao Liu State Key Laboratory of Fine Chemicals Dalian University of Technology Institute of Artificial Photosynthesis State Key Laboratory of Fine Chemicals Dalian University of Technology

Electron transfer in solid is crucial to switchable magnetic,electrical,optical and mechanical ***,it is a formidable challenge to control electron-transfer behaviors via manipulation of crystalline phases,especially through dynamic crystalline ***,three crystalline phases of an{Fe2Co2}compound were obtained via enhancement of intermolecularπ···πinteractions inducingsuccessive single-crystal-to-single-crystal transformations,from solvated 1·2CH3OH·4H2O,to desolvated1 and its polymorph 1a accompanying electron transfer.1·2CH3OH·4H2O showed thermally inducedreversible intermetallic electron transfer in mother *** electron-transfer behavior was observed in 1.1a showed reversible intermetallic electron transfer upon thermal treatment or alternative irradiation with808-and 532-nm lasers at cryogenic *** electron-transfer behaviors significantly change the magnetic and optical properties,providing a strategy to realize different electron-transfer behaviors andswitchable functions viaπ···πinteractions manipulated dynamic crystalline transformation.

关键词： electron-transfer dynamic structural transformation successive crystalline transformations reversible polymorphs

Polymer-based Nanogenerator for Biomedical Applications

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Chemical Research in Chinese Universities 2020年第1期36卷 41-54页

作者： LI jun LONG yin WANG Xudong Department of Materials Science and Engineering University of Wisconsin-MadisonMadisonWisconsin 53706USA

Polymeric devices are the workhorses of modern *** one of the cutting-edge technology leveraging polymeric materials,nanogenerator that could convert micro-/nano-scale mechanical energy into electri-city based on the mechanism of piezoelectricity and triboelectricity exhibited great promise for biomedical applications,owning to the simple configuration,high efficiency,decent electrical output,biomimetic property as well as excellent *** this manuscript,the recent representative developments of NGs in biomedical applications are ***,such as working mechanisms underneath different NG prototypes are discussed,which is followed by innovative strategies endowing NG with biomimetic mechanical *** attempts to implement NG in specific biomedical fields(e.g.,power source for implantable medical devices,therapeutic electric stimulator,etc.)are introduced and *** manuscript ends up with subsection summarizing existed challenges while providing potential solutions for future NG developments in biomedical engineering.

关键词： Nanogenerator Polymeric material Biomedical application