大飞机工装数字化生产线

大飞机的研制质量和周期很大程度上依赖于工艺装备(工装)的设计制造质量和周期.通过集成工装设计、制造、管理技术,构建飞机工装数字化生产线,实现工装研发过程各环节数据流的畅通,才能充分发挥数字化技术在工装研发过程中的作用.中航飞机西安飞机分公司的大飞机工装数字化生产线的应用实践表明,在数字化环境下,机床的加工效率显著提高,工装返工数量大幅下降.     

高速弹载平台相参积累研究

针对高速弹载平台加速度大相参积累效果变差需进行加速度补偿的问题，研究了信号波长和积累时间与加速度之间的关系，推导了利用多普勒谱宽计算加速度的公式，提出短时间积累使用弹载惯导设备输出加速度值进行补偿、长时间积累使用惯导数据与多普勒谱宽测量加速度相结合的加速度补偿方法。仿真验证了该方法的有效性。     

激光标线仪校准方法研究CSCD

激光标线仪可以输出相互垂直的水平激光线和铅垂激光线,被广泛应用于建筑工程和装修装饰施工中,然而仪器的误差会直接影响工程质量。通过对输出激光线水平度、倾斜度和直线度等多项误差来源进行理论分析,研究并设计了针对各项误差的校准方法。     

Study of the 28 October 2003 and 20 January 2005 solar flares by means of 2.223 MeV gamma-emission line

By the data on intensity-time profiles of the neutron capture line of 2.223 MeV we have studied some characteristics of two solar flares, 28 October 2003 and 20 January 2005 (INTEGRAL and CORONAS-F observations, respectively). The SINP code was applied making allowance for the main processes of neutron interactions and deceleration in the solar plasma, character of neutron source, losses of neutrons and density model of the solar atmosphere. Comparison of the computed time profiles of 2.223 MeV line with observed ones for the flare of 28 October 2003 confirms the results obtained earlier for three other flares. Namely, the effect of density enhancement (EDE) in the sub-flare region, as well as the variations (hardening) of accelerated particle spectrum in the course of the event have been confirmed. The usual modeling procedure by the SINP code, however, seems to be inapplicable to the event of 20 January 2005. Possible causes of density enhancements during some flares and peculiarities of the 20 January 2005 flare are discussed.     

电磁超介质研究进展

电磁超介质是当前电磁学和物理研究领域中的前沿与热点，文章将左手材料、复合左／右手传输线、光子晶体统一在电磁超介质的体系下进行介绍，并论述了电磁超介质的发展现状。     

基于DIY理念的苏州旅行社线路配置现状研究

DIY作为时尚消费理念风靡全世界，而随着休闲性、体验性等新的旅游元素渗入传统旅游方式．DIY旅游在各大城市城市兴起。本文通过在线调查和咨询的方式，对国家级旅游城市——苏州旅行社DIY旅游线路配置的现状进行了研究，进而提出自己的意见和看法。     

脉宽调制器中一类振荡器的全面解析结果

用分析法全面讨论脉宽调制器（IC：1842/3/4/5,1842A/3A/4A/5A）中振荡器的振荡特征参数（占空比D和频率f）与外接电阻R和电容C的关系.我们得到以R、C为自变量表达D和f的函数,以D、f为自变量求R、C的函数.并根据这些函数的计算结果绘制描述D、f、R、C（1F）4个参数之间的关系曲线.这些结果,不仅提升了对这类振荡器的认知,而且可供设计时直接引用和参考.     

实现程控化焊接两圆形管件的几何建模及计算方法

将圆形管件焊接成三通、四通等是焊接行业经常遇到的工艺。采用传统的手工式切割与焊接不仅工艺粗糙，而且效率也低。现代的焊接设备以其高效、自动化、程控化逐步取代手工操作。将提供各种形状的管件以不同连接形式焊接与切割以实现自动化、程控化的计算方法。     

Comparison of Polar and Equatorial Coronal Holes Observed by UVCS/SOHO: Geometry and Physical Properties

We analyzed UVCS/SOHO data and compared the H I Lyα (121.6 nm) and O VI (103.2 nm, 103.7 nm) emission in the polar and equatorial coronal holes. We found that the emission lines have similar characteristics in these two types of coronal holes. Both types show evidence for superradially diverging boundaries. The latitudinal distribution of the O VI line ratio may indicate that the equatorial coronal hole has O⁺⁵ outflow velocities lower than in the polar coronal holes. This revised version was published online in June 2006 with corrections to the Cover Date.