商用飞机中铝合金材料应用的若干准则

对商用飞机中铝合金材料应用的若干实用性准则，择其主要方面进行了综合分析．     

离心压缩机选型对使用效率的影响

本文通过对离心压缩机性能曲线的分析指出现有设备在选型过程中的误区所在及正确的选型方法。     

基于Linux的多协议多服务服务器程序设计

分析了服务器程序通用设计方法的缺点。介绍了一种在Linux下的多协议多服务服务器程序设计方法,并给出了实现的程序框架。重点探讨select机制在程序开发中的应用。     

RS和GIS支持的喀斯特山区公路建设可行性研究

在公路选线中,遥感(RS)和地理信息系统(GIS)技术能全面宏观地分析工程区的地质背景及 其对整个工程的影响,对于降低工程成本及评价未来公路运行的风险具有重要意义。以地处喀斯特 山区的贵州省关岭至兴仁二级公路为例,应用RS和GIS技术对工程区进行了地质背景评价,认为 公路的设计线路是可行的。同时,指出喀斯特山区公路建设的最大隐患是富水断裂带可能发生的岩 溶渗水和崩塌,应予高度重视。     

在德求学札记

作者以在德国柏林工业大学６年学习建筑的经历与体会为背景,介绍了德国建筑教育的特点。在德国的建筑教学中,大学期间十分重视对学生空间观念的培养,将制作模型当作设计过程中的重要一环,用公平讲评的教学方法,锻炼和引导学生思维,硕士阶段注重理论上的提高,用好的选题,启发学生从立意到经过程,思考一些最基本的问题。     

直接蒸发冷却填料的形式和选择应用

主要介绍了蒸发冷却空调技术的发展及其技术,概述了直接蒸发冷却填料的几种形式,分析了几种常用填料的性能优缺点及其选择使用。     

Selective color transferring via ellipsoid color mixture map

Color transfer among images is a natural phenomenon and important research topic in interactive graphics and augmented environments. Most of the conventional methods need complex user interactions and difficult image segmentation. Motivated for the intuitive use of color editing tools, this paper presents a simple but effective ellipsoid color mixture map to realize selective color transfers. Our approach proposes ellipsoid hulls to represent color statistics of the images. Based on the window-click input, the system computes the ellipsoid hulls of the source and target images respectively. The color mixture map is generated to determine the blending weight of pixels in the output image, according to the color and distance information instead of using image segmentation. By mixing the images using the color mixture map, the final results we produce have the source color selected realistically spreading on the structures related to the target window. Our selective color transferring approach is efficient and simple to use, and widely applicable for images and also video sequences without the need of addition interaction. Our experimental results have showed the high-quality visual effects and efficiency of image/video color transfers.     

GYJ-300型高压静电分选设备的研究

GYJ-300型高压静电分选设备是电子废弃物回收处理过程中的关键设备之一。主要是根据混合物料带静电能力的不同,将一定粒度的混合物料分离为导体、非导体和中间产品。该设备主要有辊筒及加热部分、高压电源及电极部分、粒子轨道调节装置等组成。     

Analyses of Compressible Suspensions for an Effective Filtration and Deliquoring

Cake filtration is frequently used in the industry to remove the majority of liquid from a suspension before the solids are dried in a thermal dryer. As the amount of liquid removed in the filtration step is an order of magnitude greater than the liquid removed during thermal drying, a slight improvement in the cake dryness from a filter can greatly reduce the duty and energy cost of the dryers. The most challenging issue in cake filtration is when a compressible material is encountered. High cake compressibility will not only slow down the filtration process, but also cause high moisture content in the final cake. Instead of pumping pressure, mechanical expression is the best deliquoring method when dealing with highly compressible cakes. Therefore, it is important for industrial users to recognize the degree of compressibility of the material being treated. In this work, a simple method is developed to estimate the cake compressibility from a single filtration run. This method provides a practical tool for engineers to understand the compressibility nature of the cake and select the right filtration/deliquoring strategy.     

给LED数码管添加光标

ＬＥＤ数码管是一种使用广泛的显示器件。给数码管添加光标将有助于数码管的读数和显示操作。本文论述了给ＬＥＤ数码管添加光标的原理和方法，并就３处常用的显示驱动蕊片给出了应用实例。