我国首次火星探测任务

我国首次火星探测任务于2016年立项实施。综合介绍了国际火星探测的历史和现状,我国首次火星探测任务的工程目标和科学目标、总体技术方案、关键技术难点、预期创新成果。我国首次火星探测任务将通过一次发射,实现火星环绕和着陆巡视,对火星开展全球性普查和局部的精细探测,推进火星地形地貌与地质构造、土壤特征与水冰分布、表明物质组成、大气电离层和气候环境、物理场与内部构造等方面的研究。实现火星探测任务目标,针对火星探测面临的各种特殊环境,需突破长期自主管理与控制等8类关键技术,取得的一系列创新成果,将为我国建立独立自主的深空探测基础工程体系,掌握深空探测基础共性技术,形成开展深空探测的基础工程能力。     

Power from space: the policy challenge

The scientific community has long embraced the concept of globalized collaboration, recognizing that scientific inquiry knows no borders and that scientific theory transcends nationality. With respect to translating scientific and technological innovation into practical application, however, national, political, and ideological barriers suddenly arise. At a time when the worlds of economics and finance are rapidly globalizing, the world of applied science lags behind — despite increasingly urgent need for global energy solutions. In the context of considering space solar power (SSP) systems, the author contends that these solutions require new ways of determining costs and benefits; that scientific experts should seek active engagement in the policy arena; and that SSP's scientific community has a critical role to play in advocating for consideration of space-based energy solutions.     

Space technology transfer: Spin-off cases from Japan

Government organizations have to justify high expenditure during periods of financial crisis such as the one we are experiencing today. Space agencies have attempted to increase the returns on their investments in space missions by encouraging the commercial use of advanced technologies. This paper describes two technology transfer (TT) cases promoted by JAXA, in order to identify the organizational models and determinants of TT. The development of a TT process from space to Earth not only benefits the aerospace industry but also the network of national companies. The aim of the paper is to investigate who the actors are and the nature of their role, as well as the determinants of the TT process in the Japanese space sector. The case studies confirm the typical path of transfer as ‘Earth–space–Earth’.     

适配器用硬质聚氨酯泡沫材料的研究

简要介绍了适配器的性能要求,分析了硬质聚氨酯泡沫的性能指标。通过对聚氨酯发泡原料进行了分类和分析,设计出合理的配方和成型工艺,研究出一种适合适配器的硬质聚氨酯泡沫材料。经试验结果分析,制备的适配器性能稳定可靠。     

Gender diversity in geo-spatial technology and applications disciplines uptake in developing Asian countries – A survey-based competency analysis

Geo-Spatial Technology and Applications (GSTA) contributes significantly to the implementation of the UN 2030 Agenda for Sustainable Development, which seeks to ‘leave no one behind’. This study attempts to assess the gender diversity in enrolment in GSTA programmes in developing countries in Asia using data available with the UN-affiliated Regional Centre in India. A survey was also conducted to gauge trainees’ comfort in a complex multi-cultural, multi-linguistic classroom environment. The analysis shows that female participation in short-term courses has been increasing rather steeply over the years (1995–2019). The enrolment has reached 30% in recent years. It is also observed that the female participants have preferred (about 10%) to enrol in physical Science and Technology (ST) -oriented courses such as Remote Sensing and GIS, Satellite Meteorology and Climate Change, and Space and Atmospheric Sciences when compared to electrical Engineering and Technology-oriented Satellite Communications and Global Navigation Satellite Systems courses that would require a strong knowledge of digital signals and systems theory.The survey study with a participation of 150 trainees from 17 countries shows that women trainees have a slight edge by 9% over the male counterparts in learning ST elements of the courses. At sub-regional levels, it is observed that participants from Indian sub-continent countries (ISC) are better by 15% than participants from South-east Asian Countries (SAC) and Central Asian Countries (CAC). As far as the course structure perspective is concerned, there has been a significant difference with 70% of the ISC trainees have found the courses as well-balanced covering equally both technology and applications, while only 36% and 56% of the trainees from SAC and CAC, respectively, have found the course as balanced. Importantly, the survey has revealed that the participants from SAC and CAC have a big challenge in apprehending lectures in English, as reflected by their top scores at 18% and 17%, respectively, compared with the corresponding value of the ISC trainees being 72%. Recommendations are suggested to sustain the female enrolment in long-term GSTA training programmes. Strategies that create family-friendly learning conditions, including joint education programmes involving lead institutions of the participants’ countries, are proposed to facilitate higher female participation. Furthermore, measures such as standardisation of curricula regionally at undergraduate levels and having periodic meetings of trainers are recommended in order to minimise the trainees’ core competency gaps in GSTA disciplines at the regional level.     

基于云计算的资源调度策略

基于云计算虚拟化技术,提出了一种租借理论和动态多级资源池相结合的资源调度策略,可以有效减少资源空闲时间,提高资源的利用率。根据策略设计了资源调度模型,并搭建实验环境对提出的资源调度策略进行了试验。实验证明该策略确实可以有效的提高资源的利用率。     

碳纤维树脂基复合材料发展现状及前景展望

文章较系统地介绍了碳纤维树脂基复合材料的优异性能、产业背景、新技术国际发展趋势、我国产业化发展现状及存在的主要问题,并有针对性地提出对策和建议,可供从事复合材料研究开发的相关人员、产业界人士及有关政府管理部门参考。     

服务器虚拟化技术在航空电子企业的实践应用

本文描述了服务器虚拟化技术的概念、分类以及相关的虚拟化产品,以主流VMware vSphere虚拟化产品为基础,设计了一个在航空电子企业中搭建虚拟化平台的建设方案,并阐述了该方案实施后所能取得的效果.     

基于分区代理机制的FC通信虚拟化方案设计

随着航电系统的发展,处理平台的集成度逐步提高,多核处理器集成多个应用将是未来应用的趋势。 但在使用多核处理器的系统中,由于多个处理器核并行运行,需要解决通信资源在多个处理器核之间的共享问 题。本文提出了一种基于分区代理机制的FC 通信虚拟化方案设计,可以实现多核架构下多应用、多分区共享 FC 网络接口设备进行通信。     

星载GNSS-R海面风场观测载荷关键技术设计与验证

目前海面风场观测手段有限,基于全球导航卫星系统反射信号处理(global navigation satellite system reflection,GNSS-R)的天基观测为全球风场信息获取提供了全新的手段.GNSS-R海面风速探测技术具有全天时、全天候、低功耗、宽覆盖、多信号源、低成本等特点,日益获得了广泛的关注...