摘要：The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks. Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.

摘要：空间太阳望远镜(SST)是我国独立发展的太阳磁场观测科学卫星;其主光学望远镜8个CCD以20M B/s的速率采集太阳偏振磁图;图像处理系统需要进行图像积分、CCD辐射劣化校正、目标的几何改正、Stokes参数计算和图像格式化等处理.SST在轨实时数据运算量达每秒数十亿次,我国现有星载计算机系统的处理能力远远达不到SST的需求.针对这一问题,在系统处理任务分析的基础上,设计出了并行阵列处理的系统体系结构,并在单通道子系统样机的研制上,采用了FPGA加DSP的模块结构,在FPGA内设计了在线实时积分器,由DSP进行离线计算和格式化处理;还给出了DSP软件流程图;进行了系统仿真和原理样机的制作,经测试表明:该系统达到了SST的星载高速数据处理要求.这种新型高速数据处理方法,可以广泛应用于我国未来航天的高速数据处理领域.

摘要：政务公文的电子化处理是实现电子政务的重要一环。引入工作流的概念,探讨了基于WebGIS环境下政务公文流转过程中遇到的问题,从复杂、多样的政务流程中抽象出一般概念,并建立了相应的数学模型。该模型具有工作流技术的高效特点,支持矢量图形,实现了文档一体化功能,安全可靠。通过一个具体实例,验证了该模型是可行的、有效的和安全的。

摘要：The role of carbodiimide as dehydrant in the chemo‐,regio‐and stereoselective Pd(Ⅱ/0)‐catalyzed hydrocarboxylation of various alkynes with HCOOH releasing CO in situ is reported for the first time to obtainα,β‐unsaturated carboxylic *** symmetrical and unsymmetrical monoalkynes show good ***,2,2’‐(1,4‐phenylene)diacrylic acid can also be synthesized in high yield through the dihydrocarboxylation of 1,4‐***,an excellent result in gram scale experiment and TON up to 900 can be obtained,displaying the efficiency of this ***,regulating the types and concentrations of dehydrant can control the CO generation,avoiding directly operating toxic CO and circumventing sensitivity issue to the CO *** the basis of the attractive features of formic acid including easy preparation through CO_(2) hydrogenation and efficient liberation of CO,this protocol using formic acid as bridging reagent between CO_(2) and CO can be perceived as an indirect utilization of CO_(2),offering an alternative method for preparing acrylic acid analogues.

摘要：通过分析研究津华线实际运行数据,并结合模拟计算过程可知,油品的黏度、环境温度、总传热系数,是输油管道水力、热力计算的关键参数,在设计过程中要尽量取得较为准确的黏温数据、沿线地温数据,并分析管道传热系数随管道沿线土壤、埋深等的变化,从而提高计算的准确性。

摘要：论述用自动全站仪结合计算机组成隧道围岩变形量测及分析系统的原理、功能及其开发应用,提出全站仪双站自由设站三维坐标非接触量测、单站独立坐标测线、双站独立坐标测线法等围岩变形量测的理论和方法,并建立相应的数学平差模型,使围岩变形非接触监测具有更好的可靠性和精度。简述全站仪机载软件、数据后处理软件的设计和开发,在机载软件控制下,无需进行对中、量仪高,全站仪可自动完成对目标点的监测,由计算机进行所有的数据处理、回归分析和预报,为隧道施工提供及时的信息反馈。

摘要：采用自行研制的光纤侧面耦合器,设计和研制了侧面分布式泵浦、两级全光纤连接的掺镱双包层脉冲光纤放大器,实现了输出波长为1064nm、平均输出功率达到2.12W、脉冲宽度20ns、重复频率50kHz的高功率、高重复频率全光纤结构脉冲光纤放大器。光纤侧面耦合器对泵浦光耦合效率最高达到69%,对反向信号光的隔离度最低为17dB,有效避免了高功率脉冲回波对泵浦光源的损害,使用更高泵浦耦合效率的侧面耦合器,可进一步提高放大器输出功率。