Research in Green Modularity Design Methodology

Green design and manufacturing is a proactive approach to minimize wastes during a product＇s design stage, thus preventing future environmental impacts. Current modular design method mainly focuses on product functional and manufacturing issues. In this paper, a theoretical scheme of multi-objective modularity analysis for discrete electromechanical product design was proposed. Product physical architecture was represented by a fuzzy graph, where fuzzy relationships contain environmental objectives and influence module formulation. Finally the optimal product modules combining all objectives can be searched by clustering algorithm.     

基于ITS和EC的智能物流系统

在分别介绍智能交通系统(Intelligent Transportation System. ITS)和电子商务 (Electronic Conunerce, EC)以及现代物流研究现状的基础上文章首次提出了基于ITS和EC 的智能物流系统的概念.同时本文还提出了智能物流系统的研究方向和逻辑框架结构.     

数字图书馆中的元数据技术应用分析与实现

在分析元数据技术应用模型及其在数字图书馆中运用的基础上,研究并提出对各类海量数字信息进行织、检索、访问和利用实现方案,设计并实现了元数据管理信息系统MDMIS.     

单燃料LPG电喷发动机的排放试验研究

通过优化发动机压缩比,调整点火提前角,改善了LPG电喷发动机的燃烧过程。实验结果表明,电控喷射LPG燃气发动机外特性功率、转矩的最大下降较原汽油机分别小于3.0％、3.2％;在常用部分负荷工况,发动机CO排放小于1％、HC排放小于150×10-6,NOx排放也得到较大幅度改善。     

苏州轨道交通一号线盾构区间通过桥桩的方案设计

介绍了苏州轨道交通一号线星海街站-星港街站盾构区间隧道穿过画桥桥桩的方案设计,对可能采用的桥桩处理方案从技术可行性、经济合理性以及对周边环境的影响等角度进行了论证,并从中选择出适合本工程的最优方案。希望其思路和方法对类似工程的设计提供一定的借鉴作用。     

TBM及盾构机设备状态监测与故障诊断实用技术综述

机械设备状态监测与故障诊断技术作为设备管理现代化的一种重要手段,对保证机械设备安全可靠地运行,以便发挥其最大的设计能力和经济效益具有重要意义。以TBM及盾构机等大型机械设备为对象,介绍机械设备状态监测与故障诊断实用技术手段和方法,希望能对应用TBM及盾构机施工的企业提供参考。     

Capacity and QoS based codebook construction for MIMO precoded spatial multiplexing systems with limited feedback

This paper deals with the design and performance analysis of transmit precoder optimization for multiple input multiple output (MIMO) systems with limited feedback of channel state information. A capacity criterion based optimal codebook construction algorithm for MIMO precoded spatial multiplexing systems is pre-sented. The optimal precoder structure combining precoding and power allocation is employed. Simulation results show that the capacity criteria based codebook can achieve higher capacity than that of equally power allocation based codebook of previous research.     

AIG based nonlinear anisotropic smoothing strategy for vector-valued images

The effects of the Rician noise on the calculated tensors are analyzed and an affine invariant gradient (AIG) based nonlinear anisotropic smoothing strategy is presented. The AIG based smoothing strategy is a development of the affine invariant nonlinear anisotropic diffusion (AINAD) restoration model, introduced by Guillermo Sapiro, and adopted to restore vector-valued data. To evaluate the efficiency of the presented AINAD model in accounting for the Rician noise introduced into the vector-valued data, the peak-to-peak signal-to-noise ratio (PSNR), signal-to-mean squared error ratio (SMSE) and Beta(parameter that stands for edge preservation) metrics are used. The experiment results acquired from the synthetic and real data prove the good performance of the presented filter.     

An identity-based encryption scheme with compact ciphertexts

This paper proposes an identity-based encryption scheme with the help of bilinear pairings, where the identity information of a user functions as the user's public key. The advantage of an identity-based public key system is that it can avoid public key certificates and certificate management. Our identity-based encryption scheme enjoys short ciphertexts and provable security against chosen-ciphertext attack (CCA).     

Application of novel rotation angular model for 3D mouse system based on MEMS accelerometers

A new scheme is proposed to model 3D angular motion of a revolving regular object with miniature, low-cost micro electro mechanical systems (MEMS) accelerometers (instead of gyroscope), which is employed in 3D mouse system. To sense 3D angular motion, the static property of MEMS accelerometer, sensitive to gravity acceleration, is exploited. With the three outputs of configured accelerometers, the proposed model is implemented to get the rotary motion of the rigid object. In order to validate the effectiveness of the proposed model, an input device is developed with the configuration of the scheme. Experimental results show that a simulated 3D cube can accurately track the rotation of the input device. The result indicates the feasibility and effectiveness of the proposed model in the 3D mouse system.