影响建陶产品生命周期因素的分析与探讨

本文从建陶产品生命周期缩短的现象入手，应用产品生命周期理论和相关的数学模型，对建陶产品生命周期的各个影响因素进行了分析和探讨。     

MPaaS: Mobility prediction as a service in telecom cloud

Mobile applications and services relying on mobility prediction have recently spurred lots of interest. In this paper, we propose mobility prediction based on cellular traces as an infrastructural level service of telecom cloud. Mobility Prediction as a Service (MPaaS) embeds mobility mining and forecasting algorithms into a cloud-based user location tracking framework. By empowering MPaaS, the hosted 3rd-party and value-added services can benefit from online mobility prediction. Particularly we took Mobility-aware Personalization and Predictive Resource Allocation as key features to elaborate how MPaaS drives new fashion of mobile cloud applications. Due to the randomness of human mobility patterns, mobility predicting remains a very challenging task in MPaaS research. Our preliminary study observed collective behavioral patterns (CBP) in mobility of crowds, and proposed a CBP-based mobility predictor. MPaaS system equips a hybrid predictor fusing both CBP-based scheme and Markov-based predictor to provide telecom cloud with large-scale mobility prediction capacity.     

变电站典型光通信模式研究

目前,通信条件已发生了革命性的变化,由早期的载波、微波和电缆等通信介质发展成为以光缆为主的通信网络.电力系统以OPGW光缆、ADSS光缆为主,已覆盖了几乎所有的输变电场所.因此,应建立与之适应的通信模式.通过研究现代通信条件、变电站通信的需求,提出了统一化的、简单的变电站通信模式.     

银掺杂对二氧化钛晶型转变的影响

采用溶胶-凝胶法制备了银掺杂的TiO2粉末,用XRD分析了掺银TiO2胶体经不同温度热处理后的晶型转变。结果表明:与未掺银的TiO2粉末相比,掺银TiO2从锐钛矿相向金红石相转变的起始温度较高,而且锐钛矿-金红石相变的温区范围变窄,晶型转变过程较快。     

共振瑞利散射测定痕量甲胎蛋白研究

磷钼杂多酸与甲胎蛋白(AFP)结合,会引起共振瑞利散射(RRS),最大RRS峰均位于480 nm,在一定浓度范围内,AFP浓度与散射强度成正比。本文对该反应体系的适宜反应条件、主要影响因素、散射强度与AFP浓度的关系、方法的灵敏度等进行了比较研究。发现不同的杂多酸对于甲胎蛋白的检出限(3σ)在5.2-78 ng/mL之间,其中以磷锑钼酸体系灵敏度最高,对于甲胎蛋白(AFP)的检出限为2.5 ng/mL。该方法具有操作简便、灵敏度高、线性范围宽等优点。考察了共存物质的干扰影响,获得了满意的结果。     

透过泥条盘筑陶艺谈现代陶艺的艺术潜力

现代陶艺的成型方法中最常用的方法是泥条盘筑法。透过泥条盘筑陶艺的过程,阐述了现代陶艺对艺术专业知识能力的拓宽和素质的提高,现在和将来而言都是一门不可忽略的艺术实践教育科目,有着较大的艺术潜力。     

国内外注塑机液压系统现状及其发展趋势──兼论二通插装比例控制技术在注塑机中的应用

本文叙述了注塑成型工艺对液压系统的要求，注塑机液压系统的分类和比较；并着重论述了具有八十年代世界先进水平的二通插装比例问的结构和特点及其在注塑机中的应用。     

Fast online acquisition and analysis for parison swell and sag in blow molding

It is critical to quantitatively and reliably characterize the effects of swell and sag phenomena on the final parison dimensions in extrusion blow molding. To achieve this goal, an online image acquisition and analysis technique was developed. The successive images of parison were automatically taken using the online acquisition apparatus. These images were then analyzed by the combined use of the conventional digital image processing method and the new one developed by the authors. So the development of parison diameter and thickness swells with the extrusion time could be determined online. On the basis of the online obtained actual swell values, the pure swell and sag components were quantitatively determined. The developed technique was tested through a series of experiments using several resins under different processing parameters and die types. Shown in the present article were the results for a converging die under three different die gaps and a high‐density polyethylene. Some new phenomena were observed using the proposed technique. The results showed that the technique yields fast and accurate determination of the evolution of diameter, thickness, and length of parison during its extrusion. The technique can be employed as a part of the closed loop control for blow molded part thickness. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2399–2406, 2006     

基于多径路由负载均衡的动态源路由协议*

提出了一种DSR的改进多径路由协议（LBDSRM）。采用开销小的综合链路状态路由判据算法,协议具有链路状态实时监控与适时调整路由功能,在链路变化较大的情况下,主动通知有路由冗余的源节点改用或重点使用次选路由;而且协议提出了适时退避算法,解决了多径任务与单径任务争用链路时网络公平性问题。仿真结果表明新协议能有效避免节点拥塞,达到较好的动态负载均衡,实现网络资源的充分利用。     

基于信息素质教育的文献检索课改革

文献检索课是进行大学生信息素质教育的重要途径。本文介绍了信息素质以及信息素质教育的概念与内涵,为适应信息素质教育的需要,文献检索课有必要在教学理念、教学内容、教学模式、师资队伍建设等方面进行改革。