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Geometrical Structures and Electronic Properties of Copper-Doped Aluminum Clusters

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Chinese Journal of Chemical Physics 2012年第2期25卷 169-176,I0003页

作者： Xi-hui Cheng Da-jun ding Yong-gang yu ming-xing Jin School of Energy and Power Engineering NanJing University Of Science and TechnologyNanjing 210094China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

Using density function theory （DFT）, the Cu-doped Aln （n=1-15） clusters have been stud- ied. The electron affinity, ionization potential, Mulliken population analysis of Cu, mean polarizability, polarizability anisotropy, dipole moments and HOMO-LUMO gaps have also been calculated on the basis of optimized geometries. The results indicate that there is magic numbers in copper-doped aluminum clusters and electronic characteristic depended on the size of clusters. As n=13, the electron affinity and ionization potential of cluster changed more than 0.3 and 0.6 eV respectively, compared with neighborhood clusters.

关键词： Density function theory electronic properties Cu doped A1 clusters

Bases of the Quantum Cluster Algebra of the Kronecker Quiver

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Acta Mathematica Sinica,English Series 2012年第6期28卷 1169-1178页

作者： ming ding Fan XU School of Mathematical Sciences Nankai University Department of Mathematical Sciences Tsinghua University

We construct bar-invariant Z[q ±1/2]-bases of the quantum cluster algebra of Kronecker quiver which are quantum analogues of the canonical basis, semicanonical basis and dual semicanonical basis of the corresponding ... 详细信息

关键词： Quantum cluster algebra,Z[q ±1/2]-basis positivity

Preface:Advanced Space-based Solar Observatory(ASO-S)

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Research in Astronomy and Astrophysics 2019年第11期19卷 1-2页

作者： Wei-Qun Gan ming-De ding yu Huang Ying-Na Su Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210034China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China

The Advanced Space-based Solar Observatory(ASO-S)is the first approved solar space mission in *** special issue includes a total of 13 papers,which were selected from presentations at the First ASO-S International Workshop,held in Nanjing from 2019 January 15 to *** together,these 13 papers provide a complete description of ASO-S until the end of Phase-B and the beginning of Phase-C.

关键词： space vehicles instruments Sun magnetic fields flares CMEs UV radiation X-ray,gamma-rays

Cluster characters for cyclic quivers

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Frontiers of Mathematics in China 2012年第4期7卷 679-693页

作者： ming ding Fan XU School of Mathematical Sciences Nankai University Tianjin 300071 China Department of Mathematical Sciences Tsinghua University Beijing 100084 China

We define an analogue of the Caldero-Chapoton map for the cluster category of finite-dimensional nilpotent representations over a cyclic quiver. We prove that it is a cluster character and satisfies some inductive formulas for the multiplication between the generalized cluster variables （the images of objects of the cluster category under this map）. Moreover, we construct a Z-basis for the algebra generated by all generalized cluster variables.

关键词： Cyclic quiver cluster algebra Z-basis

Local Cooling Effect of Rotation and Formation of Thermal Transport Barrier in Tokamaks

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Chinese Physics Letters 1996年第9期13卷 682-684页

作者： QIU Xiao-ming ding Ning Southwestern Institute of Physics P.O.Box 432Chengdu 610041

A simple model,rotation-inducing local cooling,for the mechanism on the formation of thermal transport barrier and the increase in rotation velocity is *** is shown that the sheared rotation can make electron temperature profile T_(e)(r)steepen near the rotation layer and▽T_(e)>0 on some location inside it,in agreement with the experimental observations in tokamaks,such as JT-60U with(poloidal or toroidal)sheared rotation and HL-1M with a biased *** temperature profile can remarkably improve the energy confinement in tokamaks.

关键词： tokamak rotation transport

Weighted Estimates for a Class of Global Maximal Operators Associated with Dispersive Equation

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Acta Mathematicae Applicatae Sinica 2022年第1期38卷 187-208页

作者： Yong ding Yao-ming NIU School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex Systems(BNU)Ministry of EducationBeijing 100875China Faculty of Mathematics Baotou Teachers’College of Inner Mongolia University of Science and TechnologyBaotou 014030China

For a function Ф satisfying some suitable growth conditions,consider the following general dispersive equation defined by{i■tu+Ф(√-△)u=0,u(x,0)=f(x),(x,t)∈R^(n)× R,f∈S(R^(n) where Ф(√-△)is a pseudo-differential operator with symbol Ф(|ξ|).In the present paper,when the initial data f belongs to Sobolev space,we give the local and global weighted L^(q) estimate for the global maximal operator S^(**)Ф defined by S^(**)Фf(x)=sup_(t∈R)|S_(t,Ф)f(x)|,where S_(t,Ф)f(x)=(2π)^(-n)∫_(R^(n)e^(ix·ζ+itФ(|ζ+|)f(ζ)dζ is a formal solution of the equation(*).

关键词： global maximal operator weighted estimate pseudo-differential operator dispersive equation

A DYNAMIC ALLOCATION MODEL FOR MEDICAL RESOURCES IN THE CONTROL OF INFLUENZA DIFFUSION

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Journal of Systems Science and Systems Engineering 2015年第3期24卷 276-292页

作者： ming Liu Zhe Zhang ding Zhang Department of Management Science and Engineering Nanjing University of Science and Technology School of Business State University of New York

In this paper, we develop a unique time-varying forecasting model for dynamic demand of medical resources based on a susceptible-exposed-infected-recovered （SEIR） influenza diffusion model. In this forecasting mechanism, medical resources allocated in the early period will take effect in subduing the spread of influenza and thus impact the demand in the later period. We adopt a discrete time-space network to describe the medical resources allocation process following a hypothetical influenza outbreak in a region. The entire medical resources allocation process is constructed as a multi-stage integer programming problem. At each stage, we solve a cost minimization sub-problem subject to the time-varying demand. The corresponding optimal allocation result is then used as an input to the control process of influenza spread, which in turn determines the demand for the next stage. In addition, we present a comparison between the proposed model and an empirical model. Our results could help decision makers prepare for a pandemic, including how to allocate limited resources dynamically.

关键词： Time-varying demand medical resources influenza diffusion time-space network

Solution of a Green's function for a saturated porous medium in a half-space subjected to a torsional force

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Earthquake Engineering and Engineering Vibration 2012年第1期11卷 133-138页

作者： ding Boyang Chen Jun Ouyang ming College of Civil Engineering and Architecture Zhejiang University of TechnologyHangzhou 310014China

Based on the solutions of the Green＇s function for a saturated porous medium obtained by the authors, and using transformation of axisymmetric coordinates, Sommerfeld integrals and superposition of the influence field on a free surface, the authors have obtained displacement solutions of a saturated porous medium subjected to a torsional force in a half-space. The relationship curves of the displacement solutions and various parameters （permeability, frequency, etc.） under action of a unit of torque are also given in this paper. The results are consistent with previous Reissner＇s solutions, where a two-phase medium decays to a single-phase medium. The solution is useful in solving relevant dynamic problems of a two- phase saturated medium in engineering.

关键词： torsional force saturated porous medium Green's function half-space Sommerfeld integrals

When graphite meets Li metal

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National Science Review 2020年第10期7卷 1521-1522页

作者： yu ding Guihua yu Materials Science and Engineering Program and Department of Mechanical Engineering The University of Texas at Austin

Wetting, indicating the ability of a liquid to spread out over solid surfaces,is of vital importance in addressing the scientific issues related to energy and environment technologies. The study of wetting encompasses the academic disciplines of surface chemistry, nanotechnology, materials science and energy *** past several decades have witnessed significant progress in achieving desirable wetting performance with water,

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