别小看POS端口

导读 在管理维护广域网和城域网时,经常会使用到交换机的POS端口,该端口的工作状态,与网络连接稳定性息息相关。为了能为广域网和城域网提供可靠、稳定的高速数据连接,我们需要按需配置好交换机的POS端口,让其正确、高效地为用户提供网络连接服务。     

GSENSE400 CMOS图像传感器

GSENSE400科学级CMOS图像化感器分辨牢为400几像素,像几为11×11mAPS像素。由于使用了真正的相关双采样技术,GSENSE400具有小于2个电子的读出噪声adw灵敏度高于30V/lux·s,     

基于B/S模式的高职院校科研管理信息系统的设计与实现

本文以高职学院科研管理工作为背景,研发B/S模式下适合高职院校的科研管理信息系统。该系统将成为科研管理部门日常工作信息发布与管理的平台,为全体教师和科研人员提供全面有效的科研信息,同时为科研管理部门提供准确的科研统计信息。     

Lattice-based key exchange on small integer solution problem

In this paper, we propose a new hard problem, called bilateral inhomogeneous small integer solution （Bi-ISIS）, which can be seen as an extension of the small integer solution problem on lattices. The main idea is that, instead of choosing a rectangle matrix, we choose a square matrix with small rank to generate Bi-ISIS problem without affecting the hardness of the underlying SIS problem. Based on this new problem, we present two new hardness problems： computational Bi-ISIS and decisional problems. As a direct application of these problems, we construct a new lattice-based key exchange （KE） protocol, which is analogous to the classic Diffie- Hellman KE protocol. We prove the security of this protocol and show that it provides better security in case of worst-case hardness of lattice problems, relatively efficient implementations, and great simplicity.     

基于互联网的移动远程医疗综合服务系统设计

以B/S框架为设计结构,以Web网页为载体,设计了一款基于Web网页形式的移动远程医疗综合服务系统,用户可以通过手机端、IPAD端、PC端进行访问.采用蓝牙组网方式,通过引入物联网,实现人体生理信息与位置信息的传输.     

基于Web的网络监控系统的设计与实现

随着邮政信息化建设的快速发展,网络对于邮政业务的发展变得尤为重要,为便于对沧州全区的网络和设备进行监测,及时了解全区的网络情况,采用基于web的B/S体系结构,使用Struts1.2+oracle+Tomcat软件开发了一套网络监控系统。本文详细阐述了此网络监控系统的具体实现技术和相关模块的功能。     

基于MC9S128XS128单片机控制的声音定位系统设计

本系统是基于MC9S128XS128单片机设计的声音定位系统.电路主要由声音处理模块和数据处理模块及显示模块组成.声音模块接收到声音信息后,经过处理将信号送至以MC9S128XS128单片机为核心的控制电路中,通过三角形定位算法得出声源距离核心控制电路的距离,再将结果于液晶显示屏上显示出来,为实际应用提供数据参考.     

Finite difference method for dynamic response analysis of anchorage system简

Based on some assumptions, the dynamic analysis model of anchorage system is established. The dynamic governing equation is expressed as finite difference format and programmed by using MATLAB language. Compared with theoretical method, the finite difference method has been verified to be feasible by a case study. It is found that under seismic loading, the dynamic response of anchorage system is synchronously fluctuated with the seismic vibration. The change of displacement amplitude of material points is slight, and comparatively speaking, the displacement amplitude of the outside point is a little larger than that of the inside point, which shows amplification effect of surface. While the axial force amplitude transforms considerably from the inside to the outside. It increases first and reaches the peak value in the intersection between the anchoring section and free section, then decreases slowly in the free section. When considering damping effect of anchorage system, the finite difference method can reflect the time attenuation characteristic better, and the calculating result would be safer and more reasonable than the dynamic steady-state theoretical method. What is more, the finite difference method can be applied to the dynamic response analysis of harmonic and seismic random vibration for all kinds of anchor, and hence has a broad application prospect.     

计算机辅助工艺路线编制系统的开发与应用

Ｓ１－ＣＡＰＲＰ系统是计算机辅助工艺路线编制专家系统，在该系统中将先进的专家理论和方法运用于零件工艺路线编制的具体工作中，解决了零部件专业化和成组加工制造环境下零件工艺路线编制的正确性和一致性问题。该系统能够快速准确地自动生成零件工艺路线，为进一上开发计算机辅助工艺规程设计（ＣＡＰＰ）的研究奠定了基础。本文详细介绍了应用专家系统理论和方法，开发计算机辅助工艺路线编制系统的基本思想和方法。     

真空钎焊热处理X12Cr13不锈钢组织和性能的研究

本文应用拉力实验、冲击实验、超声成像探伤、H2S应力腐蚀、光学金相及电子显微分析等方法，研究了真空钎焊热处理X12Cr13不锈钢的组织和性能。结果表明，经真空钎焊热处理(VBHT)及真空临界区热处理(IHT)后，X12Cr13钢及X12Cr13-BAu4钎焊接头强韧化效果最佳，H2S应力腐蚀(SSC)抗力最高。文中对影响其强韧化效果的诸因素及其强韧化机理进行了探讨，最后简要介绍了X12Cr13钢钎焊叶轮的生产实践。