摘要：The performance of magnesium oxychloride cement concrete(MOCC)in road engineering in the arid region in northwest China was investigated over a two-year *** categories of MOCC pavement,light-burnt magnesia concrete road(Road-L)and dolomite concrete road(Road-D),were prepared with light-burnt magnesia and a mixture of light-burnt magnesia and caustic dolomite(1:3 by mass),*** in the properties of the MOCC pavement,such as compressive and flexural strength,mineralogical phase,and microstructure,after being exposed to two rainy seasons in the field were *** compressive strength of the cored samples were conducted after being aged for 28 d,and the compressive and flexural strength were tested at ages of 1,2,3,28,90,180,270,360 and 720 *** mineralogical phase and microstructure of the pavement were also analyzed by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The results demonstrate that MOCC pavement obtained desirable compressive and flexural strengths after curing for 3 d for Road-L and 28 d for *** of the compressive and flexural strength of Road-L and Road-D decreased slightly after experiencing two rainy seasons,with the major hydration products being 5Mg(OH)2 MgCl28H2O(Phase 5)and 3Mg(OH)2 MgCl28H2O(Phase 3).The decomposition of Phase 5 is mainly responsible for reducing the mechanical strength of the MOCC pavement.

摘要：A 325-MHz superconducting half-wave resonator has been designed with β = 0.51. Three shapes of the inner conductors(race track, ring shape and elliptical shape) were optimized to decrease the peak electromagnetic fields and minimize the dissipated RF power on the cavity walls. In order to suppress the operation frequency shift caused by fluctuations of the helium pressure and maximize the tuning ranges, the frequency shifts and mechanical properties were studied on the electric and magnetic areas. The helium vessel was designed to keep the mechanical structure as robust as possible.

摘要：柔性和重构能力是现代制造系统的核心性能需求。以某汽车变速器装配生产线为研究背景,应用多Agent制造机理实现装配线的柔性和重构问题。在基于产品族功能分解原理与重构线柔性结构设计基础上,构建了基于多Agent制造案机理的系统体系结构及结合系统柔性与重构特征的Agent协商与合作机制。研究了面向多Agent系统通讯过程实现的本体建模方法并构建了重构装配线本体模型,实现了基于本体的系统通讯过程。最后在Zeus环境中实现了多Agent系统平台。

摘要：提供多agent制造平台agent之间通讯所需的机器可理解的通讯内容语言,是构建多agent制造平台的重要内容。分析与总结出可重构装配线多agent平台对其本体模型存在提供装配制造知识及支持重构过程两方面需求,并因此将本体模型划分为通用本体与重构本体两部分。以某汽车变速器可重构装配生产线为背景,研究该环境下的具体本体建模技术。在设计了描述装配线制造知识与制造机理的通用本体基础上,通过分析可重构装配线多agent平台的重构机理,定义了由具有装配行为特征的重构动作原语组成的重构本体。构建的本体模型已应用于重构装配线多agent平台的开发。

摘要：以往的IP电话设备主要采用H.323协议实现,但是H.323协议实现过程的复杂,给实际使用造成很多的问题。提出一种基于CS6220的VoIP终端的实现方法,VoIP协议采用实现简单的SIP协议,同时也能够确保电话业务的服务质量,电话业务接口的技术性能指标满足相关规范要求;重点阐述了基于CS6220的VoIP终端的软硬件设计方法;电话接口的性能测试结果表明,所提出的方案在因特网运行良好。

摘要：该文提出了集网络技术、数据库管理技术和3S技术为一体的,以省、市、县三级构成的天然林保护工程管理信息系统的构架和网络系统结构.该系统的研发以天然林保护工程的7大管理业务流程为基础,建立了基于地理信息系统组件、数据交换组件和展现组件的桌面系统.系统软件以及三级网络系统的搭建在我国四川、湖北等省得到了实现和应用.

摘要：The CiADS project is composed of the proton driver linac,target and nuclear reactor,this ADS demonstration facility will be designed and built with 500 MeV in energy and 5 mA in beam *** proton accelerator should be operating in continuous wave(CW)mode,and it will deliver 5 mA CW beam to the *** proton linac contains two main sections,one is the normal conducting section and the other is the superconducting *** room temperature four-vane RFQ in normal conducting section will accelerate the proton beam to 2.1 MeV,and the downstream SC section as the main accelerating component can accelerate the proton beam from 2.1 to 500 MeV.

摘要：基坑工程的设计应该从强度控制设计向变形控制设计转变，才能满足日益严格的环境要求。同时，基坑工程的设计与施工紧密结合是基坑工程的必然趋势。本文强调基坑工程的设计参数应该通过现场反分析求得。

摘要：针对燃料元件包壳破损监测报警阈值设置为固定阈值的不足,利用数理统计与概率分析理论提出浮动报警阈值的概念,对浮动报警阈值的设置进行了初步探讨。分析表明,在燃料元件包壳破损监测中,浮动报警阈值可较真实、快速地判定燃料元件包壳破损情况并及时报警。

摘要：主要介绍了自地理信息系统(GIS)技术发展以来，空间地理数据库建设的模式及特点。分析了各种数据库建设模式的优、缺点后认为，必须按照特定的要求与用途，合理地建设空间地理数据库。最后，提出了一种基于国家海量级的空间地理数据库建设的设计。