波分复用系统光接口主要性能参数的实验研究

概述了波分复用系统 (WDM)光接口各参数的定义和要求 ,对重要具体参数提出测试流程图 .实验结果表明 ,在合适的同步传输速率 (STM )和损耗衰减条件下 ,可以提高和改善WDM系统光接口重要参数的性能     

智能仪器的打印机配置方法

给出一种为微电脑控制的智能仪器配置打印机的简捷方便方法，详细介绍了该方法的原理、系统组成，计算机硬件电路设计及软件编程。     

基于VB可视化编程关于WINDOWS API的研究

本文详细阐述了WINDOWS API编程接口及在VB中的使用过程。     

爆炸应力波在平界面上传播的动态光弹性实验研究

本文采用动光弹技术,对模拟地质弱面、裂隙构造的环氧树脂模型进行了小型微量爆破实验,对爆炸应力波在平界面上传播的现象与规律进行了实验研究,为采矿工程中进一步探讨复杂介质中的爆破破碎机理提供具有参考价值的实验依据。     

Java的Abstract类与Interface及应用

对Java的Abstract类和Interface的作用和地位进行比较和分析,给出了两者的区别及各自的优缺点,并给出了两者在Java程序的实际编程中的具体应用。     

字符型液晶显示的接口应用

液晶显示模块是便携式仪器仪表常用的显示模块,文章就以应用广泛的GTC-16042液晶显示模块为例,在简单介绍其内部结构操作方法的基础上,着重讨论了其与单片机接口电路中的软硬件应用。     

Constraints on the late Mesozoic regional angular unconformity in West Liaoning-North Hebei by LA-ICP-MS dating

The angular unconformity between the Tuchengzi Formation and the Zhangjiakou Formation in the Chengde area is commonly regarded as the direct evidence of boundary between Jurassic and Cretaceous systems, and as the evidence of tectonic transformation interfaces in Mesozoic Era in the West Liaoning-North Hebei. Moreover, the lower boundary age of the Zhangjiakou Formation in the Chengde was to be thought about 135 Myr in the past. Based on the detailed study and systematic sampling in Yixian-Beipiao, Lingyuan, Chengde and Luanping areas in the field, the authors obtained the following isotopic ages by means of LA-ICP-MS dating: In the Lingyuan area, the Zhangjiakou Formation and the Yixian Formation are in angular unconformable contact; the age range of the Zhangjiakou Formation volcanic rock is from 133 to 130 Myr (seven samples), and that of the Yixian Formation volcanic rock is from 126 to 121 Myr (eleven samples). In the Luotuoshan of Chengde, the Tuchengzi Formation and the Zhangjiakou Formation are in angular unconformable contact; the age at the lower Zhangiiakou Formation is about 124 Myr (one sample), which reflects that the age range of the lower Zhangjiakou Formation is from 129 to 124 Myr combined with the previous study. In the Luanping basin, there is the largest sediment gap in upper Mesozoic, whose lower boundary age is confined in 131 to 130 Myr. In the Yixian-Beipiao area, the second Member of the Yixian Formation, making up more than 3/4 thickness of the Yixian Formation, was formed in 126 to 119 Myr, and the age of the Yixian Formation at the bottom is about 132 Myr. Moreover, the upper boundary age of the Tuchengzi Formation is about 136 Myr in the West Liaoning-North Hebei region. Based on the above isotopic data combined with the geological characteristics in the field in the West Liaoning-North Hebei region, it reflects that there was a widespread tectonic event in the period of 136 to 126 Myr (mainly in 130-126 Myr) in the West Liaoning-North Hebei, and it formed the late Mesozoic regional angular unconformity. Moreover, the lower boundary ages of the late Mesozoic regional angular unconformity in different areas are different, and the tectonics and the creature assemblage are different in the strata at the top and bottom of the regional angular unconformity. It implies that the late Mesozoic regional angular unconformity is a regional interface of tectonic transformation in Mesozoic Era in the West Liaoning-North Hebei.     

金属界面弯曲中圆弧周期性边界条件

本文设计了金属界面的圆弧弯曲模型,并且将固体的平移周期性边界条件,经过适当的数学处理成功应用到材料的界面弯曲模型中,解决了在动态下不能使用静态平移周期性边界条件的问题,克服了硬边界条件的不足之处,在弹性区内所得到的结论与虎克定律符合得很好。     

Agent界面设计模式

本文用Agent和面向对象的方法,将人机界面的设计问题作为整个软件系统设计的有机组成部分,定义了界面对象及其关系、任务空间、Agent界面设计器等概念,并在此基础上提出了一般化的基于Agent的面向对象的界面设计模型。     

CGI脚本安全问题

主要讨论CGI脚本的安全问题,通过对该技术的讨论使我们可以建立更加安全的网络环境.