复变函数论中刘维尔定理的应用与推广

首先给出了刘维尔定理的一种新的证明方法,描述了刘维尔定理的几何意义;其次给出了刘维尔定理在三个方面的应用;最后给出了刘维尔定理在两个方面的推广.     

确定航片同名核线的新方法

如何在倾斜的航空影像上确定同名核线是数字摄影测量研究的重要问题。本文受“铅垂线轨迹法(VLL)”启发提出了“斜线轨迹法（SLL）”；在“斜线轨迹法”和核点坐标的特殊几何关系的基础上，提出了基于SLL确定同名核线和基于核点坐标确定同名核线的新方法，阐明了两种方法的原理、具体步骤，两种方法都提供了新的思路来确定同名核线，具有原理简单、几何关系明晰的特点。     

锦屏电站大坝右岸洞室开挖过程控制及对策

锦屏一级水电站大坝右岸地下洞室具有地质条件复杂、施工条件差、干扰因素多、难度大、工程量大、质量要求高、工期紧等诸多特点,因此施工过程控制极其重要。     

P~3中的Desargues对合定理

本文将射影平面上的Ｄｅｓａｒｇｕｅｓ对合定理推广到三维射影空间Ｐ３的完全四棱锥面与完全四面锥面中。     

A new heuristic algorithm for general integer linear programming problems

1 Introduction ? Since the cutting plane method [1] and branch-and- bound principle [2] were developed as two types of efficient approaches for integer linear programming problems, how to improve them or to find new algorithms more efficient has become an…     

改建公路的设计与施工

安阳地区近几年来公路改建中应注意平面、纵断面设计的问题以及主要的路基横断面型 式,同时根据改建公路老路面状况,老路补强的路面结构设计与施工的几种方法应当推广。     

Direct observation of nodeless superconductivity and phonon modes in electron-doped copper oxide Sr1−xNdxCuO2

The microscopic understanding of high-temperature superconductivity in cuprates has been hindered by the apparent complexity of crystal structures in these materials. We used scanning tunneling microscopy and spectroscopy to study the electron-doped copper oxide compound Sr_1−xNd_xCuO₂, which has only bare cations separating the CuO₂ planes and thus the simplest infinite-layer structure of all cuprate superconductors. Tunneling conductance spectra of the major CuO₂ planes in the superconducting state revealed direct evidence for a nodeless pairing gap, regardless of variation of its magnitude with the local doping of trivalent neodymium. Furthermore, three distinct bosonic modes are observed as multiple peak-dip-hump features outside the superconducting gaps and their respective energies depend little on the spatially varying gaps. As well as the bosonic modes, with energies identical to those of the external, bending and stretching phonons of copper oxides, our findings reveal the origin of the bosonic modes in lattice vibrations rather than spin excitations.     

复域上一类过极限环的积分流形的几何结构

本文以一类存在惟一极限的多项式自治系统(En)作为研究对象，用数值计算与定性分析相结合的方法，我们得到了复域上过极限环的积分流形在相空间中Riemann曲面的几何结构。     

线阵组合平面阵的指向性研究

利用Bridge乘积定理得到了线阵组合平面阵的指向性函数,并运用MATLAB软件绘制出该阵列的三维指向性图.借助于此图分析了线阵组合平面阵的指向性特点,以及声波的波长、阵列的尺寸对指向性的影响.该研究对线阵组合平面阵的设计提供了参考.     

On some difference sequence spaces defined by a sequence of Orlicz functions

INTRODUCTION Let w be the set of all sequences of real or com- plex numbers and R∞, c and c0 be the sequence spaces of bounded, convergent and null sequences x=(xk), respectively. A sequence x∈R∞ is said to be almost convergent (Lorentz, 1948) if all Banach limits of x coincide. Lorentz (1948) proved that 1 c? = ??? x =( xk ) :linm 1n ∑kn= xk s exists, uniformly in s???. Maddox (1967; 1978) has defined x to be strongly almost convergent to a number L if 1 linm 1n ∑k n= xk s? L=0,…