System integration of high voltage electrostatic MEMS actuators

A system integration for High Voltage (HV) electrostatic MicroElectroMechanical Systems (MEMS) actuators is introduced on a micro-Printed Circuit Board. The system includes a programmable microcontroller, a programmable DC/DC converter, a multi output HV interface and electrostatic MEMS actuators. The system produces high output voltages (10–300 V) and can control a large variety of MEMS capacitive loads (1 to 50 pF) by combining diverse semiconductor technologies. This system proves that technologies, such as low voltage CMOS of different processes, high voltage DMOS and MEMS, can interact, communicate and even be integrated as a System In Package (SIP), providing significant size and cost reductions. The system was programmed to control electrostatic MEMS actuator. The DC/DC converter was made from components of different technologies and two addressable high voltage CMOS interfaces were fabricated with DALSA's 0.8 μm High Voltage process. A prototype of the global system has been built and tested.     

A novel dynamic Multiple Ring-based Local Restoration for point-to-multipoint multicast traffic in WDM mesh networks

Optical networks with DWDM (Dense Wavelength Division Multiplex) can provide multiple data channels to supply high speed, high capacity to perform bandwidth-intensive multicast transmission service. Light-tree is a popular technique applied to support point-to-multipoint multicast services. Any failure during a multicast session would cause severe service loss or disruptions, especially when the faults occur near the source node. A novel ring-based local fault recovery mechanism, Multiple Ring-based Local Restoration (MRLR), for point-to-multipoint multicast traffic based on the minimum spanning tree (MST) in WDM mesh networks is proposed in this article. The MRLR mechanism dismembers the multicast tree into several disjoint segment-blocks (sub-trees) and reserves preplanned spare capacity to set up multiple protection rings in each segment-block for providing rapid local recovery. The MRLR scheme outperforms other methodologies in terms of the blocking probability, recovery time, and average hop count of protection path per session for different network topologies.     

高校网络非线性编辑实验室的设计

目前网络化非线性编辑系统在高校教学中越来越重要，论述有卡与无卡工作站的不同特点和非编网络组网的方式，以及建设非编网络应遵循的原则。     

光束旋转90°多程放大系统的波前误差校正

光束通过神光-Ⅲ原型装置四程放大系统发生了90°旋转和扩束。在四程放大系统腔镜处放置变形镜校正系统像差是一种新的自适应光学方案，推导出被校正像差与变形镜面形之间的数学关系。理论推导表明，在扩束比大于1的前提下，腔镜处变形镜可以校正系统输出的任意类型的像差，且变形镜对应的面形唯一。理论分析和计算仿真说明该方案的校正能力与像差类型和扩束比有关，扩束比增大将增强变形镜校正像散的能力，但系统旋光消像散的能力也将减弱。     

Adaptive modeling, adaptive data assimilation and adaptive sampling

For efficient progress, model properties and measurement needs can adapt to oceanic events and interactions as they occur. The combination of models and data via data assimilation can also be adaptive. These adaptive concepts are discussed and exemplified within the context of comprehensive real-time ocean observing and prediction systems. Novel adaptive modeling approaches based on simplified maximum likelihood principles are developed and applied to physical and physical–biogeochemical dynamics. In the regional examples shown, they allow the joint calibration of parameter values and model structures. Adaptable components of the Error Subspace Statistical Estimation (ESSE) system are reviewed and illustrated. Results indicate that error estimates, ensemble sizes, error subspace ranks, covariance tapering parameters and stochastic error models can be calibrated by such quantitative adaptation. New adaptive sampling approaches and schemes are outlined. Illustrations suggest that these adaptive schemes can be used in real time with the potential for most efficient sampling.     

悬浮液进样-原子吸收光谱法测定核桃粉中的钙、铁和锌

采用悬浮液进样技术应用于原子吸收光谱法,测定了核桃粉中的钙、铁和锌的含量.将核桃粉悬浮于琼脂胶体中制成悬浮液,直接喷入空气-乙炔火焰,用标准加入法测定,将实验结果与灰化法结果进行了比较,经t检验,在显著性水平a=0.05时两种方法无显著性差异,相对标准偏差≤6.1%,结果吻合较好.该方法简便,快速,灵敏度高,准确性好.     

惯导辅助相对导航系统在漂移坐标系中的相对定位算法

对惯导辅助相对导航系统（JTIDS／INS）组网，根据相对坐标漂移概念和理论，本文详细介绍了辅助相对位置基准的相对位置滤波、相对坐标漂移滤波和在漂移坐标系中进行相对定位的特点和算法，并进行了组网仿真，仿真结果满足系统技术性能要求。     

基于模糊神经网络的综合导航系统故障检测与诊断技术

文中主要针对综合导航系统对于缓变故障检测困难，以及故障难以定位等问题，提出一种基于状态χ^2。检验和ARTMAP神经网络技术的故障检测与诊断系统。用基于BP神经网络的状态χ^2检验法检测出故障数据后，以故障时刻的SCST值作为两个ARTMAP网络的输入模式，判断故障源、故障幅值和故障发生时间。并以SINS／GPS综合导航系统实际跑车数据为基础进行缓变故障仿真，验证该方法的有效性和检测精度。     

关于IPTV EPG系统部署问题的探讨

随着IPTV技术的成熟和商用试验规模的扩大,IPTV网络系统的整体部署问题逐渐成为运营商面临的紧要问题。作为IPTV的核心系统之一,EPG的规划与设计直接影响着整个系统的效率和用户的体验。本文在介绍了EPG系统功能结构的基础上,分析了目前EPG系统部署存在的问题,提出了分布式部署网络模型,并对两种方案进行了比较,最后给出了进一步发展的建议。     

PAM-TH-UWB系统抗UMTS干扰性能分析

分析了UMTS／WCDMA系统所产生的干扰对PAM—IR-UWB系统的影响，推导出了UWB系统在存在UMTS干扰下的误比特率公式，解析分析了UWB发射信号的基本参数与抗UMTS干扰能力之间的关系。数值计算和仿真验证了分析的正确性和UWB系统抗UMTS干扰的能力。