微软.Net框架下的商务智能分析和报表发布体系

商务智能是一个企业级应用概念，它将数据库技术、数据仓库技术和数据挖掘技术集于一身。在商务智能的体系中可视的数据分析和分析结果报表发布软件组是其支持企业决策的最直接部分。介绍在．NET环境下开发的一组软件，提出了系统的整体结构框架，不仅对各个部分有一定的描述和分析，还给出了系统的部分关键测试数据。     

High dynamic range image tone mapping and retexturing using fast trilateral filtering

Using fast trilateral filtering we present a novel tone mapping and retexturing method for high dynamic range (HDR) images. Our new trilateral filtering-based tone mapping is about seven to ten times faster than that in [3]. Firstly, a novel tone mapping algorithm for HDR images is presented. It is based on fast bilateral filtering and two newly developed filters: the quasi-Cauchy function kernel filter and the fourth degree Taylor polynomial kernel filter. Secondly, a new gradient-based image retexturing method is introduced, which consists of three steps: 1) converting HDR images into low dynamic range (LDR) images using our fast trilateral filtering-based tone mapping method; 2) recovering the gradient luminance maps for the region to be retextured; 3) reconstructing the final retextured image by solving the Poisson equation. The proposed approach is suitable for HDR image tone mapping and retexturing, and experimental results have demonstrated the satisfactory performance of our method.     

撞击流-微乳液法纳米羟基磷灰石的制备

在一定pH值条件下，采用水溶液（W）／环己烷（O）／OP-10（S）／正辛醇（A）四元反相微乳液体系并结合撞击流技术制备出粒径为20-50nm的针状纳米羟基磷灰石（HA）晶体。红外光谱（IR）、X射线衍射（XRD）和透射电镜（TEM）对羟基磷灰石颗粒进行表征和分析表明：颗粒分散均匀，成针状，沿C轴方向的微晶尺寸约30nm，沿a轴方向为20nm左右。并主要考察了表面活性剂、杂质、反应和静置时间等对HA的微观形貌的影响。     

碳纳米管/环氧树脂复合材料的导电性能研究

采用搅拌和高速剪切分散工艺将碳纳米管(CNT)分散在环氧树脂(EP)中,制成CNT/EP复合导电材料,浇成圆形试样.用表面电阻计测量样品的表面电阻检测其导电性,结果显示随着碳纳米管添加量的增加,复合材料的表面电阻不断降低.碳纳米管添加量为5%时,表面电阻从1012Ω下降到106Ω.使用SEM观测了碳纳米管在环氧树脂中的分散情况.     

模式评价决策理论与方法

提出了系统结构、系统结构模式和系统环境模式矩阵等概念,根据系统结构模式与系统环境模式矩阵的匹配程度,建立了模式评价决策模型,并根据系统结构与最优系统结构适应值的比较,制定了评价系统的评价分类准则,并且把遗传算法中相关的模式理论推广到系统结构模式中,得出了一些有意义的结论.     

大峡水电站3号机组一次调频试验

一次调频是发电机组必须具备的功能，文中结合大峡水电站3号机组一次调频试验情况，介绍了一次调频功能的具体实现方法、详细试验过程，对试验结果进行了评价，并对存在的问题进行了分析，提出了改进建议。     

浅析电动机滚动轴承选型及配置

从电动机常用滚动轴承分类、寿命和润滑剂的选择等方面,简单介绍了电动机滚动轴承的选型要素。以某钢厂定宽压力电动机项目轴承设计为例,针对电机运行工况和轴向载荷复杂的特点,合理选择电机轴承配置,实际运行验证了此轴承选型的有效性和可靠性。     

Radon变换与功率谱结合的PSA图像倾斜度自动校正算法

针对卟啉传感阵列(PSA)图像中卟啉点阵列可能发生倾斜的现象,设计了一种自动校正算法.算法之初对图像进行滤波、对比度增强操作,并求得图像的二值形态学边界,利用此二值边界图像作为求取倾斜角度运算的输入,减少了噪声的影响,同时也降低了时间的花费;而后利用radon变换与功率谱结合的方法来求取倾斜角度,解决了单纯的radon...     

电子汽车衡的作弊方法与防范措施

本文主要从人员、电子技术等方面对电子汽车衡的作弊方法进行分析,并如何去防范作弊行为提出相应措施。     

Effects of cathodic potential on the local electrochemical environment under a disbonded coating

A rectangular crevice assembly was used to investigate the effects of cathodic protection (CP) potential, bubbling CO₂ and surface condition on the crevice corrosion of X70 steel under a disbonded coating. The solution within the crevice becomes more alkaline due to the reduction of dissolved O₂. As a result, the potential of the steel reaches the protected potential range and thus the protection distance becomes longer when the applied CP potential is more negative. Potential drop (IR) mainly occurs in the vicinity of the opening. However, the introduction of CO₂ into the solution prevents the formation of an alkaline environment but gives rise to an environment with a nearly neutral pH and a uniform potential distribution in the crevice. In addition, it is found that the pre-corrosion product layer significantly decreases the polarization rate in the crevice.