纳米YSZ热障涂层制备工艺及涂层环境试验研究

以结合强度为衡量指标,由L9（34）试验确立了等离子喷涂纳米YSZ制备热障涂层的最佳工艺参数。采用SEM对涂层微观组织结构及涂层相关性能进行了研究分析。结果表明,经优化工艺参数喷涂制备的YSZ热障涂层结合强度可达38.26MPa,厚度为0.37mm的该涂层在600℃时的隔热温度达到70℃,且该涂层具有良好的环境适应性。     

DV Based Positioning in Ad Hoc Networks

Many ad hoc network protocols and applications assume the knowledge of geographic location of nodes. The absolute position of each networked node is an assumed fact by most sensor networks which can then present the sensed information on a geographical map. Finding position without the aid of GPS in each node of an ad hoc network is important in cases where GPS is either not accessible, or not practical to use due to power, form factor or line of sight conditions. Position would also enable routing in sufficiently isotropic large networks, without the use of large routing tables. We are proposing APS – a localized, distributed, hop by hop positioning algorithm, that works as an extension of both distance vector routing and GPS positioning in order to provide approximate position for all nodes in a network where only a limited fraction of nodes have self positioning capability.     

CMOS ROI技术在星敏感器上的应用

在星敏感器的设计中,通过引入大面阵探测器可以在保证视场的情况下提高精度,却增加了系统存储量和计算量.为了解决这一问题,将APS(Active Pixel Sensor)探测器特有的ROI(Region Of Interest)技术应用于星敏感器.敏感器完成质心算法仅使用了单帧图像百分之一的存储量(2 kbytes),在省去了FPGA片外静态存储器的同时,降低了系统功耗.     

基于Web服务的服装出口供应链及其实现技术研究

在新的国际贸易环境下,中国服装出口行业亟需整合行业资源,组建以大中型服装出口企业为核心的行业联盟,提高抵御国际风险的能力。为此对服装出口供应链进行了研究,提出了基于核心企业协调功能的服装出口供应链框架,并且讨论其优化策略和技术架构,最后设计了服装出口供应链管理系统的功能模型。     

CMOS有源光电传感器像素采集单元成像质量分析

针对CMOS光电二极管型有源像素采集单元中存在的拖影问题,从像素采集单元的工作原理入手,利用光电二极管的等效电路模型,对像素采集单元的光电转换状态和置位状态进行分析.得出造成拖影的根本原因是光电二极管置位后的电压与上一周期末光电二极管的光生电压有关.     

先进摄影系统（APS）问世

美国柯达公司与日本几家公司经历十余年共同努力，推出一种全新的摄影系统，它是影像科技探索中的划时代突破，为人们带来的是更多方便与乐趣。     

Advanced production scheduling for batch plants in process industries

An Advanced Planning System (APS) offers support at all planning levels along the supply chain while observing limited resources. We consider an APS for process industries (e.g. chemical and pharmaceutical industries) consisting of the modules network design (for long–term decisions), supply network planning (for medium–term decisions), and detailed production scheduling (for short–term decisions). For each module, we outline the decision problem, discuss the specifi cs of process industries, and review state–of–the–art solution approaches. For the module detailed production scheduling, a new solution approach is proposed in the case of batch production, which can solve much larger practical problems than the methods known thus far. The new approach decomposes detailed production scheduling for batch production into batching and batch scheduling. The batching problem converts the primary requirements for products into individual batches, where the work load is to be minimized. We formulate the batching problem as a nonlinear mixed–integer program and transform it into a linear mixed–binary program of moderate size, which can be solved by standard software. The batch scheduling problem allocates the batches to scarce resources such as processing units, workers, and intermediate storage facilities, where some regular objective function like the makespan is to be minimized. The batch scheduling problem is modelled as a resource–constrained project scheduling problem, which can be solved by an efficient truncated branch–and–bound algorithm developed recently. The performance of the new solution procedures for batching and batch scheduling is demonstrated by solving several instances of a case study from process industries.     

XPS and AFM Study of Interaction of Organosilane and Sizing with E-Glass Fibre Surface

Organosilanes are often used in commercial sizings for glass fibres to provide wettability with the resin and promote strong interfacial adhesion to the matrix in a fibre reinforced polymer composite. The silane treatment is introduced as part of a complex deposition from an aqueous emulsion immediately at the spinaret and determines the optimum properties of the cured composite. To understand the interaction of organosilanes contained in sizings for glass surfaces, XPS was used to investigate the adsorption of γ-aminopropyltriethoxysilane (APS) from a simple sizing system containing a polyurethane (PU) film former. It has been found that both APS and the sizing (containing APS and PU) deposits on E-glass fibre surfaces contained components of differing hydrolytic stability. The differences observed in the AFM images of APS coated E-glass fibres before and after water extraction also confirmed that the APS deposit contained components with different water solubility.     

在半导体制造业导入高级规划与排程系统

半导体制造系统的回流、资源高度共享等特征使得仅采用ERP系统已无法满足对生产规划与排程的种种需求.高级规划与排程(APS)系统的出现是为了强化ERP中以传统MRP规划逻辑为主的生产规划与排程功能,以协助规划人员对物料与产能做同步且最有效益的生产规划.APS系统利用先进的信息科技及规划技术,再考虑企业资源限制条件与生产现场的控制与派工法则,规划可行的物料需求计划与生产排程计划,具有同步规划、即时规划、最优规划等特点.对APS功能特色、APS导入时与ERP的衔接问题以及导入后各部门的运作进行了介绍及分析.