Mapping seasonal trends of electron temperature in the topside ionosphere based on DEMETER data

The diurnal, seasonal and latitudinal variations of the electron temperature in the Earth‘s topside ionosphere during relatively low solar activity period of 2005 – 2008 are investigated. In order to examine seasonal variations and morphology of the topside ionospheric plasma temperature, CNES micro-satellite DEMETER ISL data are used. Presented study is oriented on the dataset gathered in 2005 and 2008. Within conducted analysis, global maps of electron temperature for months of equinoxes and solstices have been developed. Furthermore, simultaneous studies on two-dimensional time series based on DEMETER measurements and predictions obtained with the IRI-2012 model supply examination of the topside ionosphere during recent deep solar minimum. Comparison with the IRI-2012 model reveals discrepancies between data and prediction, that are especially prominent during the periods of very low solar activity.     

美国空军未来的装备与技术——2010"技术地平线"报告分析

介绍了美国空军2010年发布的"技术地平线"的出台背景、主要内容.并根据该研究报告浅析了美国空军未来的装备与技术趋向.     

The Chinese GNSS—System development and policy analysis

As the most successful dual-use technology at present the Global Navigation Satellite System (GNSS) also has extensive recognition in China. China began developing navigation satellites in 1967 and now has 45 years' experience in the field. 2012 was a crucial year for China's GNSS: the first-stage project of the second-generation global navigation satellite system was rounded off, and it entered service for regional area navigation and positioning. This paper discusses the development history of China's satellite navigation, analyzes the background to China's decision to develop an independent GNSS and investigates the formation of its three-step development strategy. It reviews the system construction and industrial policy of the BeiDou system and the actions taken by various government departments at different times.     

导弹武器系统的使用可用度

本文描述了导弹武器系统使用可用度（Ａｏ）的涵义和影响因素，探讨了使用可用度在导弹武器系统的研制和使用过程中的指标论证、分解与设计、以及试验与评价等。     

发展面向21世纪的纳米技术

通过对纳米技术最新发展的介绍，结合计量测试技术，提出了发展我国纳米技术战略的建议。     

创建学习型工会组织之探讨

学习型组织理论是世界上最前沿的两大管理理论之一，创建学习型工会是提高职工素质、学校自身发展、履行工会自身职责覆提高决策民主化的需要。工会要从树立新的学习观，建立新的学习举措，构建行之有效的运行机制出发，创建学习型工会组织。     

航天飞机用LACE方案的发展及其参数分析

研究了应用于空天飞机的液体空气循环发动机。介绍了提高空气液化比的几种方法，如：液氢，液氧储箱循环，液氧喷洒，液态空气喷洒。以能量平衡为基础，计算了液体循环发动机的循环参数。结果表明综合采用以上方法可以使液化比提高约６５％。     

飞机拦阻系统的现状及其发展

飞机拦阻系统是机场重要常务保障设施,用来对正常降落和因意外原因冲出跑道的飞机实施安全阻拦,以保障人机安全。本文对飞机拦阻系统的应用发展及研究现状进行了综述。     

浅谈自动化科学与技术的发展历程

通过阐述自动化科学与自动化技术的内容及作用、自动化学科的发展历程、研究内容以及分类体系，展望了未来自动化技术的发展方向和趋势，指出了“综合化、网络化、人性化、绿色化”的自动化科学与技术的发展理念。     

国外极轨气象卫星的发展

概要介绍国外极轨气象卫星珠现状及发展计划，并阐述了极轨气象卫星的发展趋向。