A method based on diffraction theory for predicting 3D focusing performance of compound refractive X-ray lenses

A method based on the diffraction theory for estimating the three-dimensional (3D) focusing performance of the compound refractive X-ray lenses is presented in this paper. As a special application, the 3D X-ray intensity distribution near the focus is derived for a plano-concave compound refractive X-ray lens. Moreover, the computer codes are developed and some results of 3D focusing performance for a compound refractive X-ray lens with Si material are shown and discussed.     

Evolution of Shower Parton Distributions in a Jet from Quark Recombination Model

The evolution of shower parton distributions in a jet is investigated in the framework of a quark recombination model. The distributions are parameterized and the Q^2 dependence of the parameters is given by polynomials of In Q^2 for a wide range of Q^2     

M-M型纳米颗粒膜的巨磁电阻效应

探讨了M-M型纳米颗粒膜巨磁电阻效应的物理机制，指出了影响颗粒膜巨磁电阻效应的因素，推导出M-M型纳米颗粒膜巨磁电阻效应的计算公式。     

加息反应:中国升息全球"变脸"

从10月29日起,我国上调金融机构存贷款基准利率,一年期存款基准利率由现行的1.98％提高到2.25％,一年期贷款基准利率由现行的5.31％提高到5.58％。"一石激起千层浪",中国政府9年来的首次加息不仅引发了全球股市的大地震,还刺激了债市和期市的敏感神经,也搅得整个外汇市场方寸大乱,如此强烈的全球性连锁反应史无前例。     

A theoretical method based on Fourier spectrum analysis for the focusing performances of the X-ray compound refractive lenses

It is important to predict the intensity distribution in focusing plane for designing the X-ray compound refractive lenses. On the basis of analyzing the structure of X-ray compound lenses and comparing it with Praunhofer diffraction system, it is concluded that the X-ray focusing system can be regarded as a kind of Praunhofer diffraction system. Therefore, a method based on Fourier spectrum analysis is presented to predict the intensity distribution in the focusing plane for the X-ray lenses. A brief analysis on the relationship between the parameters of X-ray lenses and their focusing performance is also given in this paper.     

《左传》人物祸福预言类型考论

将<左传>中所记载的人物祸福预言,作出分类与考论,将其分为形貌,言语行为、梦境、卜筮、灾异、天象、歌谣(谶语)六类,并通过此类预言对其所具有的社会思想价值作出分析与评论.     

浅谈建筑CAD的教学与运用

自20世纪70年代以来，一种全新的计算机辅助设计（CAD）技术发展十分迅速，这是一种以计算机图形学为基础，涉及工程分析、数据管理与数据交换、文档处理、以及软件设计等方面的综合性新技术，成为一种用计算机系统辅助人们对产品或工程设计进行显示、修改、输出的一种新的设计方法。80年代初，它已发展成为工程设计界实用的工具；目前它在世界范围内得到了相当广泛的普及和应用。     

光纤光栅温度传感实验

为适应高等院校电子、通讯、信息技术等专业实验教学的需要，设计了光纤光栅温度传感实验．通过该实验，学生可以了解光纤光栅传感器的原理及解调的方法．     

工效学在用户界面设计中的应用

工效学可以简单的理解为工作效率的学问。涉及人的认知、心理和思维等方面。用户界面是人与计算机之间传递、交换信息的媒介。本从思维工效，视觉工效，操作工效三个方面阐述了工效学在用户界面设计中的应用，以提高人机交互效率。