自聚焦克尔类电介质中非傍轴光束调制非稳的研究

Propagation stability of non-paraxial beam in nonlinear Kerr media is investigated with a linear stability method.Both theoretical analysis and numerical simulation show that modulation instability(MI) gain spectrum has three different distribution features determined by the times of incident power P0 and the non-paraxial parameter a. Furthermore,the corresponding criterion is put forward to distinguish the three different distributions.     

ATM综述

ATM技术是当前计算机网络的主要研究热点之一。本文讨论ATM的产生、ATM技术、ATM传输控制、ATM的应用、ATM的现状与未来     

利用任务驱动与混合学习策略提高网络异步学习绩效

本文探讨了如何不断驱动与维持网络异步学习,以及如何将其与其它学习方式有机结合以发挥混合作用.本文介绍的2005至2011年的教学案例与设计研究表明,任务驱动与混合学习策略的应用能有效提高网络异步学习的绩效.文中具体分析了该结论的提出所依据的客观事实,及其产生原因和应用策略.     

Optical QPSK/16QAM modulation based on serial-parallel MZM scheme in radio-over-fiber system

A novel scheme of optical modulation in 40 GHz radio-over fiber (RoF) system is proposed. It generates optical QPSK/16QAM signals in a serial-parallel structure of Mach-Zehnder modulators (MZMs). The millimeter-wave is obtained with optical frequency multiplication (OFM). Furthermore, modulation on optical-wave is transferred onto millimeter-wave. It can be used to increase transmission capacity of millimeter-wave RoF systems.     

基于API触发的软实时调度的设计与实现

针对开放软实时系统的需求,提出一种基于API触发的软实时系统调度架构.该设计可以灵活的适应企业的频繁变更需求,如新增调度终端,新增作业中心,新增执行作业等;该设计提供调度安全验证,优先级调度,并行执行,负载均衡等功能.文章给出了基于API触发的软实时系统调度的设计方案,实现方案与API调度接口.