航天器运输包装箱仿真验证平台技术研究

针对数量有限的物理跑车试验无法满足减振与保温性能测试需求的问题，提出一套航天器运输包装箱动力学与热学仿真验证方法，包括：建立适用于包装箱系统的刚柔耦合多体动力学系统，通过结合线路条件测试生成的动力学系统外部激励，实现减振性能虚拟跑车测试；建立基于计算流体力学的包装箱热学模型，通过模拟自然对流和空调控制，实现包装箱保温性能虚拟跑车测试；基于C/S架构和导航式流程设计思想，建立航天器运输包装箱仿真验证平台，通过实际案例证明该平台仿真结果与实际跑车测试数据具有较高的一致性。     

异构无人系统协同作战关键技术综述

针对异构无人系统的规模、异构性强弱，对异构无人系统进行了分类，引入了异构无人系统协同作战班组的概念以及应用设想，并通过城市环境中异构无人系统协同作战问题为牵引，提出了异构无人系统协同作战面临的挑战与解决思路，在此基础之上，从异构无人系统协同控制架构、协同任务规划、智能交互、目标感知、环境感知等主要方面对异构无人系统协同作战的关键技术进行了分析，最后对异构无人系统协同作战目前的研究进展与挑战进行了总结。     

基于遗传算法的H∞混合灵敏度导弹解耦控制器设计及加权函数选择方法研究

导弹在大攻角再入飞行过程中,偏航通道和滚动通道存在着气动交连耦合,当耦合影响较大时,采用传统的把耦合项当作随机干扰的办法来处理,容易造成系统失稳。因此采用基于H∞混合灵敏度解耦控制的方法对通道间进行解耦,对于H∞混合灵敏度加权函数,通过遗传算法优化获得,并推导了H∞混合灵敏度标准型的建立过程和遗传算法优化加权函数的步骤。应用该方法,对导弹大攻角飞行过程中通道间的解耦控制进行设计。仿真表明,对参数不确定性的耦合系统,该方法具有良好的解耦性和鲁棒稳定性。     

The influence of dose, dose-rate and particle fragmentation on cataract induction by energetic iron ions.

Because activities in space necessarily involve chronic exposure to a heterogeneous charged particle radiation field it is important to assess the influence of dose-rate and the possible modulating role of heavy particle fragmentation on biological systems. Using the well-studied cataract model, mice were exposed to plateau 600 MeV/amu 56Fe ions either as acute or fractionated exposures at total doses of 5 - 504 cGy. Additional groups of mice received 20, 360 and 504 cGy behind 50 mm of polyethylene, which simulates body shielding. The reference radiation consisted of 60Co gamma radiation. The animals were examined by slit lamp biomicroscopy over their three year life spans. In accordance with our previous observations with heavy particles, the cataractogenic potential of the 600 MeV/amu 56Fe ions was greater than for low-LET radiation and increased with decreasing dose relative to gamma-rays. Fractionation of a given dose of 56Fe ions did not reduce the cataractogenicity of the radiation compared to the acute regimen. Fragmentation of the beam in the polyethylene did not alter the cataractotoxicity of the ions, either when administered singly or in fractions.     

质量管理体系建设必须与企业发展战略相适应

提出了质量管理体系建设中存在的问题和解决途径,对不同企业发展战略的质量管理体系进行了比较,指出了质量管理体系建设必须与企业发展战略相适应。     

Dose equivalent, absorbed dose and charge spectrum investigation in low Earth orbit.

Particle intensity, dose equivalent and absorbed dose have been measured on board the space shuttle Endeavour during STS-108 in December 2001 by Dublin Institute for Advanced Studies (DIAS). The dose estimates are based on very accurate measurements of recoils produced in CR-39 by cosmic ray primary and secondary protons and heavier nuclei and by secondary neutrons. The corresponding LET spectra were used to determine dose equivalent and absorbed dose values. Estimates of the total flux of Z > or = 2 nuclei have been undertaken and a preliminary charge spectrum was measured. Some comparisons are made with preliminary data obtained on STS-105 (ISS Expedition) and other missions using CR-39 detectors.     

通用仪器接口总线标准及软件技术的发展

叙述了通用仪器接口总线标准和软件技术的现状和未来。介绍了ＧＰＩＢ、ＶＸＩ总线，程控仪器校准命令和虚拟仪器，给出了ＧＰＩＢ标准关系图，ＧＰＩＢ软件结构以及虚拟仪器框图。     

数据采集系统的总体评价

从性能指标出发，综述了数据采集系统总结评价技术的发展状况。并提出了对数据采集系统性能指标的两类分类方法 。     

八丝热线探针制作及其应用

介绍了八丝热线探针的制作工艺,有效地消除了各热丝探头之间的电信号干扰和动力学干扰。实验中使用该探针检测到了湍流边界层内的大尺度旋涡,并测量了它们的强度和尺度。与此同时还获得了速度、湍流强度和功率谱等流场参数,结果与现有典型数据一致。说明本文所述的多丝热线探针具有很强的实用性。     

多相序列的相关性研究

地址码在CDMA通信系统中占有重要地位,它决定着系统的容量、抗干扰性等重要指标。本文在NaokiSuehiro提出的多相序列构造理论的基础上,对其相关性进行分析、研究,并与当前性能较佳的二元序列进行对比。结果表明,多相序列具有优异的性能,适合用作CDMA系统中的地址码。