摘要：为了更加准确地测量铝基覆铜板的导热系数,设计实现了一种改进型铝基覆铜板导热系数测试系统;重点阐述了测试系统的设计原理和设计思想,并对测试系统的硬件和软件设计进行了详细介绍;实验结果表明,该测试系统具有测试速度快、精度高、操作方便等特点;在实际铝基覆铜板导热系数测试中具有很高的使用价值,并为铝基覆铜板导热系数测试标准的制定提供了设备和数据上的支持。

摘要：According to systematic concept,system of mountainous village landscape was divided into landscape systems of natural environment,of humanistic entity,and of humanistic *** the paper,analysis was conducted on characteristics of mountainous village landscape,and more attention was paid to the integrity,correlation,adaptability and *** features of mountainous village landscape system were analyzed based on present construction of mountainous village landscape and the result indicated that overall design was absent in the ***,research was carried out on present conditions of the three subsystems and the result indicated that the subsystems were *** on the analysis,suggestions were proposed on design of mountainous village *** is emphasized in many aspects in the paper,such as overall design,rational planning,protection of natural environmental landscape system,improvement of humanistic entity system and inheritance of humanistic spirit system,so that coordinated development of subsystems would be promoted.

摘要：从系统概念入手,将山地型乡村景观系统分成自然环境景观系统、人文实体景观系统、人文精神景观系统3个子系统,分析了山地型乡村景观系统的特征,突出了山地型乡村景观系统的整体性与相关性,以及环境适应性与动态性。从现有的山地型乡村景观建设实践出发,分析了山地型乡村景观系统的现状特征,指出山地型乡村景观系统缺乏整体设计,并分别就3个子系统的现状展开研究,认为山地型乡村景观系统内各子系统不协调。在此基础上,就山地型乡村景观系统设计提出了相关建议,强调应整体设计、合理规划,保护自然环境景观系统,完善人文实体景观系统,传承人文精神景观系统,进而促进各子系统协调发展。

摘要：在混合信号芯片设计领域,Verilog/Systemverilog/VHDL等行为级模型被广泛应用于描述模拟和混合信号模块的电路特性,用以帮助实现更快速全面的全芯片功能验证。为了保证正确、有效和全面的全芯片功能验证,电路模块的行为级模型和晶体管级设计之间的功能比对验证(***,BVS)非常关键。在此之前,利用现有的EDA工具,只能进行逻辑状态的BVS矢量检查,而不能进行实数类型的矢量检查。为了更好地描述模拟和混合信号模块的行为特性,采用了Wreal模型和SV-UDT(Systemverilog-UserDefinedType),因此对EDA工具提出了新的要求,需要其支持实数类型的矢量检查。本文描述了一种行为级模型功能比对验证的自动方法学,基于CadenceXPS仿真器的矢量检查功能,可以同时实现逻辑状态和实数类型的自动比对检查。实数类型矢量检查是向EDA供应商Cadence提出的一种新的概念和需求,且已经在XPS仿真器中成功实现。