摘要：针对大批量定制生产的特点 ,提出基于产品功能结构单元的产品配置模板来完成对客户配置需求的快速响应 ,给出了产品配置模板的信息模型和配置求解策略 由于机械产品结构的复杂性 ,引入配置设计知识的混合表达方法以适应不同产品设计类型的要求

摘要：Orthogonal Frequency Division Multiplexing(OFDM) is an effective technique to deal with a frequency selective channel since it can convert the channel into some flat fading ***,very different output SNR values of the subchannels will lead to poor bit error performance when a linear equalizer and Equal Bit Allocation(EBA) are adopted in OFDM ***,we proposed three novel nonlinear Joint Transceiver(JT) schemes based on Zero-Forcing(ZF) criterion and Minimum Mean Square Error(MMSE) criterion respectively,which can transform all subchannels of an OFDM system into subchannels with identical channel ***,EBA is equivalent to the Optimum Bit Allocation(OBA) for these *** analysis helps us to obtain the theoretical approximate BER values of the JT *** results verify the numerical analysis and confirm that the performance of our proposed JT scheme greatly outperforms the traditional linear equalizer with EBA at moderate and high SNR values.

摘要：A new hydraulic design method of three-dimensional guide vane for centrifugal pump is proposed on the assumption that the fluid at the outlet of guide vane satisfies the uniform velocity moment *** geometry of blade is controlled by the distributed rule of blade angles along the meridional streamline which is described by a fourth-order *** results demonstrate that the designed guide vane can overcome the drawback of two-dimensional guide vane,enlarge the high efficiency scope and improve the hydraulic performance of centrifugal pump on the off-design operation *** comparison with the performance of the centrifugal pump without inlet guide vane,the peak value of efficiency can be enhanced by 2.13% after the three-dimensional guide vane was being *** three-dimensional entire flow field of the centrifugal pump with inlet guide vane is simulated,and the basic principle and mechanism of inlet guide vane pre-whirl regulation are *** validity of design method has been proved.

摘要：近十年 ,特别是美国 (1994年 ,Northridge)和日本 (1995年 ,阪神 )发生强烈地震后 ,暴露出现行抗震设计思想的不足 .为了克服这些不足 ,基于性能的抗震设计被国际上广泛研究 ,并且被认为是未来抗震设计的主要指导思想 .在有关文献的基础上 ,针对基于性能抗震设计所涉及的部分问题进行了阐述 .目的是明确基于性能抗震设计的主要思想。

摘要：Control invariant sets play a key role in model predictive *** Lyapunov function,a technique is proposed to design control invariant sets of planar systems in a precise ***,itis designed for a linear system in Brunovsky canonical ***,the result is extended to generallinear ***,the nonlinear control systems are considered,and some sufficient conditionsand design techniques are also *** examples are presented to illustrate the proposeddesign methods.

摘要：针对目前国内外有关沥青路面结构设计方法的不足,提出了一种新的基于使用性能和寿命周期费用分析的、包括新建和改建沥青路面结构设计在内的全寿命沥青路面结构厚度优化设计方法,并分别从设计思想、设计标准、设计方程及流程、考虑的因素和寿命周期费用分析等几方面进行了阐述。

摘要：本文针对跨断层地下管线的地震破坏特性,设计跨断层地下管线的振动台试验模型。首先根据试验条件,对整个模型体系进行相似比分析,设计了可以模拟走滑断层错动作用的模型土箱;其次对模型材料的物理力学特性进行室内试验,确定模型土的级配曲线和抗剪参数;然后根据管线承受断层作用的数值模拟结果,对传感器进行合理的布置;最后,介绍模型土的成形过程。

摘要：The increasing complexity and size of configuration knowledge bases requres the provisionof advanced methods supporting the development of the actual configuration process and design reuse.A new framework to find a feasible and practical product configuration method is presented in masscustomization. The basic idea of the appoach is to integrate case-based reasoning (CBR) with a con-straint satisfaction problem(CSP). The similarity measure between a crisp and range is also given,which is common in case retrieves. Based on the configuration model, a product platform and customerneeds, case adaptation is carried out with the repair-based algorithm. Lastly, the methodology in theelevator configuration design domain is tested.

摘要：这份报纸拿在作为主要科学问题设计构造和生态系统变化之间的相互作用。基于 DPSIR ( Drive-Press-State-Impact-Response )框架，这研究分析在从开车，出版社，状态，影响和反应的方面设计构造和生态系统变化之间的相互作用的通匝，向前带相互作用模型，相互作用情形分析方法和相互作用索引(开车反应索引， IIDR ，开车影响索引， IIDI ，影响反应索引，红外，影响索引， IIII )，并且预付相应计算模型和相互作用索引 sy 并且也，这份报纸采用不同相互作用索引到尊重影响在上和对设计建设的反应，并且作为例子在纵的范围峡区域(LRGR ) 拿 Manwan 水力发出的电力车站和道路交通建设分析并且验证相互作用模型。由建设的结果和 Manwan 水力发出的电力的操作的系统的分析，车站是分别地 3.67， 3.92， 14.35 和 0.35。没有在相互作用系统，和利用的通匝元素的显著变化水力发出的电力车站基于想象有益于地区性的环境和社会的持续发展没有考虑环境费用，散开效果，潜在的否定效果和潜力，水力发出的电力的回答驻扎建设。通过一些案例研究，我们造了的相互作用模型在相互作用显示出很好的实际价值量的分析并且相互作用索引系统构造。

摘要：分析了分布式协同设计中的关键技术问题 ,介绍了其目前的主要研究进展和代表性成果 在集成技术方面 ,重点阐述了CAX/DFX工具的分布集成问题 ,包括封装、互操作、本体论 ;在协同技术方面 ,集中分析了异步协同设计、同步协同设计和协同装配设计 ;