Combining the wavelet and second order total generalized variation for the image zooming algorithm

A new image zooming model combining the wavelet and second order total generalized variation is proposed. The original image is regarded as the wavelet low-frequency band for the zoomed image, and the high-frequency bands are estimated. Further processing is implemented for the zoomed image using the second order total generalized variation. The second order total generalized variation may lead to an absence of the staircase effect and keep most details, and therefore, the high quality image is reconstructed. Finally, experimental results have illustrated that our algorithm not only can achieve better zooming but also can produce a very satisfactory denoising effect.     

网络语言规范使用的意义及措施

网络在中国迅速普及,伴随而来的是大量出现并广泛传播的网络语言。网络语言正以其特有的语言形式,展示着语言的变异并推动着语言的发展,与此同时也产生了一定的负面影响。规范网络语言不是否定变化,而是规范变异中不合理的部分,规范不是强制性的,而更侧重于引导。规范网络语言需要发帖人、读帖人、学校教育人员、家长以及网站的共同配合。     

首钢新建35000m^3／h空分设备的流程及特点

简介了首钢氧气厂新建35000m^3／h空分设备的工艺流程及技术参数，详细分析了常规变负荷和快速变负荷调节时空分设备的运行工况以及快速变负荷调节时的工艺特点。     

双参数弹性地基板的动力问题

针对目前带自由边的双参数弹性地基板的边界条件及基本方程在使用上的混乱情况,为了板与地基动力相互作用理论的严密性和计算的可靠性,将板和地基作为一个总系统,利用H am ilton动力变分原理,重新系统地审视了双参数弹性地基上板动力问题的基本理论,给出了地基附加质量影响的明确计算公式,建立了考虑地基附加质量影响的基本方程和边界条件,并对边界条件的简化进行了讨论.所得的结果还可推广到位于层状地基上的板的分析.     

氧化铝生产中四蒸发减温减压系统的改造实践

四蒸发减温减压是某公司氧化铝分厂第3蒸发站和第4蒸发站使用蒸汽压力和温度调节的重要生产工序.本文介绍了采用直行程减温减压阀、机械密封和变频调速装置来控制减温水加入量的方法来改进减温减压的成功经验.     

Studies on the Reduction of Coefficient of Variation: A Case Study

In a spinning mill, yarn is the final product. Linear density expressed in terms of count is one of the important characteristics of yarn. Because variability of textile strands increases as the linear density increases, the variability in the count is often measured in terms of coefficient of variation (CV)%. The yarn with a high CV% of count leads to a higher end breakage rate during the spinning and subsequent weaving/knitting operations, and consequently, results in lesser productivity and poorer appearance quality of the woven/knitted fabric. When this woven/knitted fabric is dyed, uneven shades are generated. Because the production of yarn involves processing of raw cotton in multimachines at multistages, possible sources that lead to a high CV% of count are many. Enrick's (1960) analysis procedure, which is based on the modification of the range method for analysis of variance, is used conventionally for detecting the stages where excessive “between-machine” differences are present. When the CV% of count is inflated due to the generation of systematic variation in any machine or introduction of high variability by any machine, this inflation remains undetected when using Enrick's procedure. The case study presented here demonstrates that a step-by-step analysis of linear densities of different stage-outputs starting from yarn to card sliver, using appropriate nested design models along with Duncan's multiple range test, is very useful in detecting all possible sources of a high CV% of count of yarn.     

标志变异指标中平均差与标准差的对比问题

阐明标志变异指标中平均差和标准差的各自特点及应用范围，通过对实际资料的分析，对经济统计分析标志变异指标的选择有实际意义。     

基于猜测供给函数均衡的发电公司策略行为

提出了一种新的基于微增响应的猜测供给函数均衡(CSFE)模型，用于构造电力市场中发电公司的策略行为及其相互作用，比常用的Cournot模型更为客观地反映了发电公司潜在的市场力。根据供给函数均衡理论，提出一种通用的发电公司优化供给曲线模型，分析了优化供给曲线为线性的条件，并得出如供给曲线为线性则可以惟一确定市场均衡解。通过在IEEE6机30母线系统的仿真，说明文中模型可以适用于需求无弹性的电力市场分析，并易于构造分段线性的发电公司优化供给曲线。     

构造发电公司投标策略的一种新方法-微增响应猜测法初探

介绍了微增响应猜测法(Conjectural Variation，CV)的基本概念，提出了基于这种方法构造发电公司在不完全信息情况下的最优投标策略。通过理论分析和算例计算，结果表明基于经典博弈理论构造的发电公司的最优投标策略是该方法的一种特例。采用该方法进行市场模拟时，对各发电公司不同的微增响应猜测进行组合，可以得到不同的市场均衡点，且均为Nash均衡点。