KVM技术在网络服务器管理上的应用

KVM技术又称多电脑共享器 ,其在网络服务器的管理上的应用具有广阔的发展前景。     

The Distributed CO in Comet Halley

Examination of the spatial distribution of CO intensity of Comet Halley indicates that a large fraction of CO originates from the refractory organic component in the coma, rather than directly from the volatiles in the nucleus. Based on the fluffy aggregate interstellar dust comet model, we have estimated the upper limits of the total amount of CO provided by coma dust. The implications from the comparison of the predicted results with the observed value have been discussed. This revised version was published online in June 2006 with corrections to the Cover Date.     

Relativistic MHD Simulations of Jets with Toroidal Magnetic Fields

This paper presents an application of the recent relativistic HLLC approximate Riemann solver by Mignone & Bodo to magnetized flows with vanishing normal component of the magnetic field. The numerical scheme is validated in two dimensions by investigating the propagation of axisymmetric jets with toroidal magnetic fields. The selected jet models show that the HLLC solver yields sharper resolution of contact and shear waves and better convergence properties over the traditional HLL approach.     

载荷谱实测机翼地面标定技术浅论

就飞机载荷谱实测机翼地面标定的原理、标定方法及标定数据处理进行了较详尽的阐述。对飞机载荷谱实测的前期工作有较强的指导意义。     

Dynamics of Coronal Loop Oscillations Recent Improvements and Computational Aspects

We will discuss the observed, heavily damped transversal oscillations of coronal loops. These oscillations are often modeled as transversal kink oscillations in a cylinder. Several features are added to the classical cylindrical model. In our models we include loop curvature, longitudinal density stratification, and highly inhomogeneous radial density profiles. In this paper, we will first give an overview of recently obtained results, both analytically and numerically. After that, we shed a light on the computational aspects of the modeling process. In particular, we will focus on the parallellization of the numerical codes.     

多传感器数据融合的权值因子确定

对多传感器位置级的数据融合,从静态单传感器的特点入手,建立可靠的数据评价函数,引入到动态多传感器系统中,以多传感器测量数据的算术平均值或滤波对目标的状态估计值作为评价参考,从而量化对测量数据的评价,进而确定加权因子,得到融合值。从仿真结果来看,当评价函数确立合理、参考点选用得当时,融合数据能够很好地剔除假数据,减小偏差大的测量值的影响,在采用不够准确的参考点时,使用评价函数确定加权因子得到的融合数据仍能够优于算术平均值方法得到的数据。     

利用导弹制导误差补偿规律修正不完全弹道测量的数据融合技术

论述不完全弹道测量的数据融合处理问题。在惯性器件天地关系一致的前提下,导弹惯性器件误差补偿量变化规律,就反映了飞行中制导工具误差的变化规律,即遥外差的变化规律。因此,可以利用补偿量视速度的变化规律约束条件,内插出不完全测量段落的遥外差数据,在建立节省参数的弹道估计的联合模型基础上,融合少量的高精度测元来解算弹道参数。落点验算表明：利用该方法计算的落点接近实际落点。     

微机测控系统输入输出接口智能故障诊断

介绍了用于对微机测控系统输入接口板、输出接口板测试硬件系统的构成,设计了接口卡电路.针对两块电路板,提出了对数字电路板的测试和故障诊断分四个层次,即整板级、功能模块级、单片级和功能输出点级的思想,采取了对功能输出点进行编码的方法建立数字电路板测试的标准知识库,提出了使用功能标志矩阵的方法对各个层次的测试结果进行存储的方法,并根据各个层次测试的关系及相应功能标志矩阵的关系建立了智能化故障诊断程序.     

数据采集系统动态准确度的一种评价方法

介绍了一种用于评价数据采集系统动态准确度的定义及测试方法，同时评价了其动态条件下的偏置误差、增益误差及模数转换有效位数，最终给出了一种数据采集系统的实际测试评价结果。     

一个方便实用的旋翼数据库

本文介绍了一个以EXCEL和EXCEL VB建立的旋翼数据库。并以一个分库为例介绍了建立和使用方法。