关桥著名焊接专家

作为航空特种焊接技术发展的倡导者,请您介绍一下我国航空特种焊接/连接技术的发展历程. 关桥:航空特种焊接／连接技术体系的发展与我国焊接产业的发展同步.随着军民结合技术的发展,航空特种焊接／连接技术的服务目标早已跨越航空产业的局限.由于这一技术体系所提供的特种焊接／连接方法、及其技术载体-装备所具有的通用性很强,工程应用领域几乎涉猎到我国国民经济建设的各个领域.     

决策者寄语

YOUR PUBLICATION IS A GOOD CONTRIBVTION TO OVR INOVSTRY BY SHRKING AOVANCED TELHNOLOGY IDEOS AND DEVELOPMENT     

解析中英创意企业家网络

解析中英创意企业家网络中英创意企业家网络来自广告、建筑、艺术、古董贸易、电脑和视频游戏、手工艺、设计、时尚设计师、电影和影像、音乐、表演艺术、出版、软件和电视和广播的领域:是艺术家(创意人才)和市场(创意消费者)连接起来的桥梁;     

Summary of CNCOSPAR Activities 2006-2008

1 In Brief In July,2006,we have successfully organized the 36th COSPAR Scientific Assembly in Beijing.This is the most important event for US during this period.Summary of this meeting has been submitted to both the Chinese government and the HQs of COSPAR after the meeting.Both the Chinese government and the HQs of COSPAR were satisfied with the outcome of the event.      

Launch and commissioning of the PAMELA experiment on board the Resurs-DK1 satellite

PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature in a wide energy range (protons: 80 MeV–700 GeV, electrons 50 MeV–400 GeV). Main objective is the study of the antimatter component: antiprotons (80 MeV–190 GeV), positrons (50 MeV–270 GeV) and search for antimatter (with a precision of the order of 10⁻⁸). The experiment, housed on board the Russian Resurs-DK1 satellite, was launched on June, 15th 2006 in a 350 × 600 km orbit with an inclination of 70°. The detector consists of a permanent magnet spectrometer core to provide rigidity and charge sign information, a Time-of-Flight system for velocity and charge information, a silicon–tungsten calorimeter and a neutron detector for lepton/hadron identification. An anticounter system is used off-line to reject false triggers coming from the satellite. In self-trigger mode the calorimeter, the neutron detector and a shower tail catcher are capable of an independent measure of the lepton (e⁺ + e⁻) component up to 2 TeV. In this work we focus on the first months of operations of the experiment during the commissioning phase.     

战役规划中登陆地区的选择

在选择登陆地区这个决策问题中,指标权重的确定与方案在各指标下的值的确定都很困难,文中利用多指标区间决策的TOPSIS法,给出了选择登陆地区决策方案排序的原则。     

航空发动机压气机大小叶片技术

介绍了航空发动机大小叶片压气机的工作原理和国内外研究状况,对其在涡轴、涡扇发动机上的具体应用进行了研究,并分析了其技术应用的可行性、实用性和有效性。     

GPS用于航天器交会对接的方案与模糊度OTF解算研究

设计了GPS相对导航在航天器交会对接中应用的两种方案 ;认为在交会对接相对导航的过程中 ,可以进行载波相位模糊度的OTF解算 ,以直接利用高精度的载波相位观测量 ,提高交会对接测量的精度。通过实算 ,对结论进行了验证。     

浅谈“两课”教学观念的转变与革新

本文对目前“两课”教学中存在的问题进行了分析,结合高等教育改革发展方向,重点探讨了“两课”教师教学观念的转变和革新问题,明确提出了“两课”教师应树立的几个新的教学观念,并对这些教学观念的内涵及贯彻方式进行了阐述。