铝Kα吸收谱测量

从20世纪80年代开始，国外多家实验室采用点背光法进行了中低Z材料的K壳层和三壳层X射线吸收谱的实验研究工作。国内从20世纪90年代中开始在星光装置上开展辐射不透明度的实验探索，建立了一系列的诊断技术，     

关于平行三角形集簇直线横截的Helly数

We prove two results about the problem of finding the Helly number for line transversals to a family of parallel triangles in the plane: (1) If each three triangles of a family of parallel right triangles are intersected by an ascending (or a descending) line, then there is an ascending (or a descending) line that intersects all the triangles of the family; (2) If each three triangles of a family of parallel obtuse triangles are intersected by an ascending (or a descending) line, then there is an ascending (or a descending) line that intersects all the triangles of the family. We also obtain that the Helly number of a family of parallel right or obtuse triangles is 3.     

On the Weak＊ Drop Property for Polar of Closed Bounded Convex Sets

We define and study the weak* drop property for the polar of a closed bounded convex set in a Banach space which is both a generalization of the weak* drop property for dual norm in a Banach space and a characterization of the sub-differentialmapping x→эp(x) from S(X) into 2^S(X*) that is norm upper semi-continuous and norm compact-valued.     

A V-CYCLE MUTIGRID FOR QUADRILATERAL ROTATED Q1 ELEMENT WITH NUMERICAL INTEGRATION

In this paper, a V-cycle multigrid method is presented for quadrilateral rotated Q1 elements with numerical integration.     

一类矩形域上生成线性保凸曲面的细分法

离散细分法是构造曲线曲面的一类重要方法,而在实际应用中要求某些细分法是保形的,即初始控制点是凸的,那么要求细分最终生成的曲线或曲面也要求是凸的.用构造法构造了一类在等距离意义下矩形域上生成线性保凸曲面的细分法,该细分法具有插值性、局部性、线性不变性,齐次性和仿射不变性,并用数学归纳法证明了该类细分法的线性保凸性、收敛性和光滑性.     

Locale上的收敛结构

本文从点式处理角度，在Ｌｏｃａｌｅ上成功地建立了收敛结构。利用它研究了一致Ｌｏｃａｌｅ的完备性、刻划紧性，、界定了Ｌｏｃａｌｅ上一种满意的Ｈａｕｓｄｏｒｆｆ分离性，     

拟凸函数的若干充分条件 (英)

本文提出了中点拟凸函数的概念,在可测函数空间中,给出了中点拟凸函数拟凸的若干个充分条件．     

推转壳模型波函数的Seniority结构和K结构

本文用粒子数守恒方法分析了推转单i壳模型波函数的seniority结构和K结构。随转动角频率ω增大,低激发带的seniority v结构和K结构变得很复杂。对于不太高的ω((?)ω(?)≤0.5MeV),低激发带的主要组态成分是v=0,2,4,而v≥6成分极微,可以略去。|K|≤(?)10的各组态成分都可相比拟,表明原子核显著偏离轴对称。也研究了能隙参数和顺排角动量随ω的变化。     

对偶L_p-质心体与Fourier变换

对p>0,Lutwak,Yang和Zhang引进了R~n中一个凸体K的对偶L_p~-质心体Γ_(-p)K.本文研究Γ_(-p)KΓ_(-p)L是否必定蕴涵vol_n(K)≤vol_n(L)的问题.我们的结果是Lutwak(p=1的情形)及Grinberg和Zhang(p>1的情形)关于L_(p~-)质心体算子Γ_p的类似问题的结果的对偶形式.