航空发动机用环境障涂层的发展

碳化硅纤维增强碳化硅陶瓷基复合材料（CMC-SiCf/SiC）具有低密度、耐高温、高比强度等优点,是下一代高推重比航空发动机热端部件的主要候选材料之一。然而,该材料在燃气环境中面临严重的腐蚀问题。因此,需要在材料表面涂覆环境障涂层进行防护。本文综述了环境障涂层的选材要求、材料发展阶段、涂层制备技术、涂层考核与失效等,指出了环境障涂层今后在选材、制备、考核与评价的发展方向。     

神舟3号飞船上太阳辐射测量

2002年3月至9月间,用3台太阳辐照度绝对辐射计(SIAR)组装的太阳常数监测器在神舟3号飞船轨道舱上测量了太阳辐照度．改进了SIAR辐射计的锥腔结构,把电加热丝埋在薄锥腔壁中间,提高了绝对精度．采用了用宽视场辐射计飞船在轨运动中太阳扫过其视场期间进行测量的方法,测量值与美国EOS上ACRIM Ⅲ测量数据的最大偏差在0．2％以内．     

复合材料固化监测新方法及在固体发动机缠绕成型中的应用

概述了复合材料现有的固化监测方法,着重论述了机械阻抗分析式和光纤传感式两种固化监测的新方法的工作原理,结构特点及在固体发动机壳体缠绕成型固化中的应用。     

智能移动机器人导航控制技术综述

智能移动机器人在制造业、服务业、军事、星际探测等领域获得了广泛的应用,导航是智能移动机器人实现自主控制需要解决的重要问题.对不同领域智能移动机器人导航技术发展现状进行了调研.针对环境感知与建模、定位和路径规划等机器人导航控制关键技术,深入分析了其实现方法.在此基础上归纳出智能移动机器人导航控制未来的发展趋势.     

Current and future activities in education and public outreach at the Observatoire de Haute Provence

The Haute Provence Observatory has for primary mission the operation of telescopes, up to two meters in diameter, for the astrophysics community, and the measurements of various upper atmosphere parameters for the geophysics community. An education and outreach program has been developed with several reached: from school pupils to post-doctorate students, teachers, and the general public. In the recent years we put emphasis on the formation of teachers and on the renewal of the general public visit. Given the wide range of education and outreach activities we cover, we had to develop a relation network with individuals, amateurs, teachers and institutions, amplifying our efforts. For the future, we will try to make an optimal use of the resources available in the St Michel l’Observatoire area, taking steps to reach an agreement with the neighbouring “Centre d’Astronomie”, a structure devoted to education and public outreach belonging to the local authorities.     

《质量管理体系要求》中监视和测量装置的控制难点分析

在贯彻2001版GJB 9001A质量管理体系要求过程中,如何正确理解该标准中“对生产和检验共用设备的校准”、“发现测量设备不符合要求时应采取适当的措施”的条款内容,及在工业计量管理中对监视和测量装置的控制提出建议和意见。     

IMT系统完好性监测算法介绍

文章详细介绍了斯坦福大学GPS实验室的完好性监测测试平台（IMT）的系统结构、所涉及的完好性监测算法以及对这些算法所进行的综合处理,最后得出完好性标识,播发给用户,可对我国的卫星导航系统完好性监测系统研究与设计提供参考。     

Advanced data acquisition system for SEVAN

Huge magnetic clouds of plasma emitted by the Sun dominate intense geomagnetic storm occurrences and simultaneously they are correlated with variations of spectra of particles and nuclei in the interplanetary space, ranging from subtermal solar wind ions till GeV energy galactic cosmic rays. For a reliable and fast forecast of Space Weather world-wide networks of particle detectors are operated at different latitudes, longitudes, and altitudes. Based on a new type of hybrid particle detector developed in the context of the International Heliophysical Year (IHY 2007) at Aragats Space Environmental Center (ASEC) we start to prepare hardware and software for the first sites of Space Environmental Viewing and Analysis Network (SEVAN). In the paper the architecture of the newly developed data acquisition system for SEVAN is presented. We plan to run the SEVAN network under one-and-the-same data acquisition system, enabling fast integration of data for on-line analysis of Solar Flare Events. An Advanced Data Acquisition System (ADAS) is designed as a distributed network of uniform components connected by Web Services. Its main component is Unified Readout and Control Server (URCS) which controls the underlying electronics by means of detector specific drivers and makes a preliminary analysis of the on-line data. The lower level components of URCS are implemented in C and a fast binary representation is used for the data exchange with electronics. However, after preprocessing, the data are converted to a self-describing hybrid XML/Binary format. To achieve better reliability all URCS are running on embedded computers without disk and fans to avoid the limited lifetime of moving mechanical parts. The data storage is carried out by means of high performance servers working in parallel to provide data security. These servers are periodically inquiring the data from all URCS and storing it in a MySQL database. The implementation of the control interface is based on high level web standards and, therefore, all properties of the system can be remotely managed and monitored by the operators using web browsers. The advanced data acquisition system at ASEC in Armenia was started in November, 2006. The reliability of the multi-client service was proven by continuously monitoring neutral and charged cosmic ray particles. Seven particle monitors are located at 2000 and 3200 m above sea level at a distance of 40 and 60 km from the main data server.     

Research by the Tasmanian cosmic ray group during the International Geophysical Year

Systematic recording of the cosmic radiation commenced in Hobart in 1946 and at Mawson in Antarctica in 1955, making these two of the longest running cosmic ray observatories in the world. For the IGY, observations were also made at a sub-Antarctic island and near the equator, and an airborne survey of the nucleonic component was made from Geomagnetic Latitude −60°, south of Australia, to Japan and back. At Hobart there were neutron monitors, vertical and inclined muon telescopes, an ionization chamber, and two muon telescopes at ∼40 m of water equivalent underground. The research based on these and other observations determined the energy dependence of the Forbush and 11-year variations and concentrated, in particular, on understanding the anisotropic nature of galactic cosmic rays up to 150 GeV; the anisotropies in the onset phase of Forbush decreases; and the anisotropies in solar cosmic ray events. An investigation was initiated to calculate the trajectories and cutoff rigidities of cosmic rays in a high order simulation of the geomagnetic field. This was completed in 1959–60.