美国服装社会心理学课程大纲特点分析

本文通过对美国五所大学服装社会心理学课程大纲特点的分析，旨在了解美国服装社会心理学教育的最新动态．希望能从中汲取对我国服装教育和研究可借鉴的经验。主要特点为：课程内容广泛、目的明确：教材和参考资料学术性强：学习要求严格、个性化：授课计划实践性强：课程考核合理、科学。     

云南陇川盆地东南缘新第三系砾岩成因及沉积模型

云南陇川盆地东南缘新第三系南林组砾岩沉积物由扇根碎屑流、扇中河道和扇缘水道及沼泽沉积构成，文章探讨了各类砾岩的成因、粒度分布，指出该区的砾岩沉积模型及其油气勘探意义。     

量子光场中的介观Josephson结的流压台阶

研究处于一般量子电磁场中的介观Ｊｏｓｅｐｈｓｏｎ结的流压台阶，明显地计算了奇偶相干态光场中的介观Ｊｏｓｅｐｈｓｏｎ结的流压台阶，表明介观Ｊｏｓｅｐｈｓｏｎ结不仅能反映外加量子电磁场的量子相干性而且能区别不同种类的非经典光场。     

应力腐蚀的电化学研究

应力腐蚀开裂(SCC)是一种应力与腐蚀的协同作用,它广泛存在于工业生产中。国外有人认为,保守地讲每年由于SCC所造成的材料结构破坏至少占15％以上。在与之有关的各种因素中,电化学起十分重要的作用,它是研究SCC过程的有力工具。本文就SCC研究中的电化学方面做一简单的归纳。     

分布式自组织网络动态功率控制机制的研究与实现

针对自组织网络的功率控制机制,提出了一种适用于自组织网络的分布式动态功率控制机制.源节点首先向目的节点申请保护时隙作为专用数据通信时隙,申请成功后源节点根据接收到的响应报文的发送功率和接收信号强度指示器,计算出源节点到目的节点的最优发送功率,减少发送功率从而节省节点能耗.基于CC2430无线模块开发了实验验证平台对该机...     

Pretreatment of biomass by torrefaction

Agricultural biomass has some drawbacks such as high moisture content, low energy density and wide distribution and as a result, the cost of transport and storage are high. Moreover, raw biomass has poor grindability so its use in a pulverized boiler or entrained flow gasifier is difficult. Torrefaction is a mild pyrolysis process carried out at temperatures ranging from 200°C to 300°C to deal with these problems. The cotton stalk and wheat straw were torrefied in a fix-bed reactor at moderate temperatures (200°C, 230°C, 250°C, 270°C and 300°C) under N₂ for 30 min. The biomass chars after torrefaction had higher energy density and improved grindability characteristics compared with raw biomass and they also showed hydrophobic characteristics. The volatiles consist of a condensable fraction and a non-condensable fraction. The former mainly contained water and tar (organic products but mainly acetic acid). The non-condensable products are typically comprised of CO₂, CO and a small amount of CH₄ and even trace H₂. The volatiles increased with an increase in the torrefaction temperature but the solid yield and the energy yield decreased. However, the grindability and energy density of the biomass char showed great improvement. A kinetic study on the generation of the main non-condensable gases was undertaken and we conclude that the gases are formed by parallel independent first-order reactions. Characteristic kinetic parameters for the generation of each gas were determined.     

Simulated analysis of summer climate on centennial time scale in eastern China during the last millennium

Using Lanczos filtered simulation results from the ECHO-G coupled ocean-atmosphere model, this study analyzes the spatiotemporal structure of temperature and precipitation on centennial time scale to examine how climate change in eastern China responded to external forcing during the last millennium. The conclusions are (1) eastern China experienced a warm-cold-warm climate transition, and the transition from the warm period to the cold period was slower than the cold to warm transition which followed it. There was more rainfall in the warm periods, and the transitional peak and valley of precipitation lag those of temperature. The effective solar radiation and solar irradiance have significant impacts on the temporal variation of both temperature and precipitation. Volcanic activity plays an important role in the sudden drop of temperature before the Present Warm Period (PWP). There is a positive correlation between precipitation and volcanic activity before 1400 A.D., and a negative relationship between the two thereafter. The concentration of greenhouse gases increases in the PWP, and the temperature and precipitation increase accordingly. (2) The spatial pattern of the first leading empirical orthogonal function (EOF) mode of temperature on centennial time scale is consistent with that on the inter-annual/inter-decadal (IA-ID) time scales; namely, the entirety of eastern China is of the same sign. This pattern has good coherence with effective solar radiation and the concentrations of greenhouse gases. The first leading EOF mode of precipitation on centennial time scale is totally different from that on the IA-ID time scales. The first leading mode of centennial time scale changes consistently over the entirety of eastern China, while the middle and lower reaches of the Yangtze and Yellow Rivers are the opposite to the rest of eastern China is the leading spatial pattern on IA-ID time scale. The distribution of precipitation on centennial time scale is affected by solar irradiance and greenhouse gas concentrations.     

基于多agent和知识地图的智能教学系统研究

提出了一种基于多agent和知识地图的智能教学系统模型,对教学过程进行了详细的分析.该模型充分利用agents的交互能力和自适应能力促进系统与学生以及学生与学生之间的交互,并且利用个性化的教学知识地图对教学过程进行智能导航,以提高教学效果.在该模型中,学生agent基于学生的知识水平、学习风格、心理特征来构建学生模型以...     

加权Hardy-Littlewood不等式

定义了新的加权Hardy-Littlewood算子,建立了该算子的范数不等式和非共轭参数的Hardy-Littlewood不等式的加权形式,并且分别用不同的方法得到了共轭参数和非共轭参数情形下的最佳常数.相应的级数形式也得到了类似的结果.     

跨平台的移动机器人地图绘制系统研究

提出了基于接口的地图、绘图、控制分离的设计方法和模块间的实体坐标协商模式。对各模块间的接口设计做了详细的分析并提出了解决方案。对比了当前各种主流的机器人平台的特点和java语言相对于其他语言在室内移动机器人控制系统构架上的跨平台优势。