Statistics of the Interplanetary Magnetic Fields Observed at 0.72 AU And 1 AU

This paper presents the Interplanetary Magnetic Field (IMF) observations at 0.72 AU measured by Venus Express (VEX) and 1 AU by Advanced Composition Explorer (ACE) in 2007. The distributions of daily averages of $B$ are lognormal in both locations. The multiscale structure of the magnetic field fluctuations was described by studying the increments of $B$ over a range scales from 10 min to 21.3 hours. All the Probability Distribution Functions (PDFs) can be described quantitatively by Tsallis distribution function. On the ecliptic plane from 0.72 AU to 1 AU, the entropy index q increases with distance over all scales, indicating the intermittency of turbulence is growing. The widths of the PDFs at 0.72 AU are larger than those at 1 AU at all scales, which indicating the turbulence at 0.72 AU is more intense than that at 1 AU. This helps us understand the nature and development of the magnetic field fluctuations.      

Operation and Application of A, B Satellites for Environment and Disaster Monitoring and Forecasting

Environment and disaster monitoring and forecasting small satellite constellation A and B satellites (HJ-1-A, B) are called "environment and disaster reduction satellites A and B' for short. The constellation adopts a 10:30 LT sun-synchronous circular orbit, with orbit altitude of 649 km. HJ-1-A and HJ-1-B are distributed with a phase difference of 180o in the same orbital plane, so as to enhance the time resolution of earth observation. The satellites have orbit maintenance capability, the lifetime is 3 years. Both satellites adopt CAST968 platforms. Two wide-coverage multispectral CCD cameras with resolution 30 m and width 700 km, a super-spectral imager with resolution 100 m and width 50 km as well as a data transmission subsystem of 120 Mbit/s are deployed on HJ-1-A, which also carries Ka communication testing equipment of Thailand. HJ-1-B has two wide-coverage multispectral CCD cameras (the same as satellite A), one infrared camera with resolution 150 m and width 720 km and a data transmission subsystem of 60 Mbit/s. The coverage period of the wide-coverage multispectral CCD camera is 48 hours. The revisit period of super-spectral imager is 96 hours and the coverage period of infrared camera is 96 hours.      

Fengyun Satellites: Achievements and Future

Chinese meteorological satellite, Fengyun (FY) Satellite, has a polar-orbiting series and a geostationary series. Up to now, 5 polar-orbiting (FY-1A/B/C/D and FY-3A) and 5 geostationary (FY-2A/B/C/D/E) satellites were launched. FY data has been being intensively applied not only to meteorological monitoring and prediction but also to many other fields regarding ecology, environment, disaster, space weather and so and. The FY data sharing system, FengyunCast, is now one of the three components of global meteorological satellite information dissemination system, GEONETCast. The first satellite of the new generation polar-orbiting series, FY-3A, was launched on 27 May, 2008, demonstrating the FY polar-orbiting satellite and its application completed a great leap to realize three-dimensional observations and quantitative application. The first of the next generation geostationary series (FY-4) is planned to launch in 2014.      

利用DES方法对大迎角细长旋成体气动特性受俯仰振荡影响的数值研究

采用DES(Detached-Eddy Simulation)对大攻角下细长旋成体俯仰振动的气动特性进行了数值模拟,分析俯仰振动对细长旋成体流场与气动力特性的影响。通过对背风面分离涡的强度和位置,流场形态,截面压强系数和侧向力系数的观察与分析,发现施加小振幅、特定频率的俯仰振动对大迎角细长旋成体背风面流场有明显的控制能力,将改变流场结构,使背风面非对称流场趋于对称。     

民机驾驶舱工效学综合评价方法研究及应用

飞机驾驶舱工效学综合评价是驾驶舱研制中一个极其重要的问题,以往在驾驶舱的研制过程中往往为其工程质量提出种种衡量标准而忽视工效学的综合评价,导致设计出的驾驶舱存在不少工效学方面的问题。为此,结合民机驾驶舱工效学的实际情况,本文提出一种将改进专家打分法、三标度层次分析法和模糊综合评判法集成的综合评价体系,给出了合适、可操作的评价指标和评价方法,能指导驾驶舱的工效学评价。该体系考虑了工效学评价的模糊性,实现了征求和提炼专家群体的意见,对飞机驾驶舱工效学进行了定量地综合评价,为比较相似设计方案的优劣提供了理论基础和方法。应用此方法,结合研究项目,对某民机驾驶舱尺寸设计的工效学进行了评价,证明了该方法的有效性。     

民机应急撤离过程仿真模型研究进展

民机的应急撤离是一个涉及时间短、人员多、环境状态复杂、影响因素众多的乘员逃生过程。本文系统介绍了国内外民机应急撤离理论研究的历史与现状,分析和总结了现有民机应急撤离理论研究方法。研究结果表明,应急撤离仿真可以较真实的模拟实际撤离过程,可以作为民机初步设计阶段的一种评估手段。应急撤离仿真后续深化的主要方向应集中在撤离的人群运动规律模拟、耦合因素影响机理以及环境影响因素的定量化研究上,并为民机应急撤离仿真提供更为准确的撤离参数。     

海军武器装备仿真与试验一体化

通过分析一体化试验方法的趋势,研究半实物仿真试验技术、试验鉴定一体化的若干问题,包括一体化研究的内容和技术途径。在靶场试验中以外场试验信息验证仿真试验的结果,以科学可信的仿真试验进行精度评估、作战效能评估,加速海军武器装备的研制定型。     

现代资本主义国家思想统治初探

本文主要从下列三个方面论述:一、资本主义国家统治手法的历史演变;二、现代主要资本主义国家思想统治的几种模式;三、现代资本主义世界的精神危机。     

设备费的投入及合理使用

对高校设备投入的财力平衡、多渠道投入、设备费合理使用和经济效益问题进行了研究。