不同助烧结剂及造孔剂对SiC多孔陶瓷的影响

采用真空烧结方法制备了SiC多孔陶瓷，研究了不同助烧结剂Al2O3-Y2O3、Si以及不同造孔剂丙烯酰胺聚合物、羧甲基纤维素（CMC）对SiC多孔陶瓷形貌和气孔率的影响。结果表明：与Si相比较，Al2O3-Y2O3更有利于促进SiC的烧结；以Al2O3-Y2O3为助烧结剂的试样比以Si为助烧结剂的试样具有较高的气孔率。     

机械力化学改性硅灰石/聚丙烯性能的研究

利用气流磨对硅灰石进行机械力化学改性，并用IR分析对改性效果进行了预评价；对比了用改性前后的硅灰石填充聚丙烯(PP)的性能。结果表明：改性后硅灰石分别为由亲水疏油性变为亲油疏水性；硬脂酸质量分数为1．5％时，改性硅灰石／PP复合材料的拉伸强度和冲击强度最好。     

数字地球渲染中单精度浮点数误差的改正方法

目的 针对全球大场景渲染中单精度浮点数的低精度导致的图像抖动和撕裂问题,提出了一套完整的解决方法。方法 首先,使用全球四叉树结构来寻找新的坐标原点,避免了现有算法需要频繁切换世界坐标原点的缺点;其次,在新坐标系下进行坐标转换和矩阵转换,解决了像素坐标计算的误差导致的抖动问题;最后,在GPU中使用基于对数的深度计算方式来提高深度的分辨率,解决了深度计算误差导致的Z-Fighting现象。结果 实验结果表明所提方法能很好的解决单精度浮点导致的渲染问题。结论 此方法具有适应性强、实现复杂度低、精度和效率可控等优点。     

纤毛式MEMS传感器技术研究

首次综合国内外纤毛式MEMS传感器的研究成果,分别介绍了基于纤毛仿生原理的三维微触觉传感器、三维微力传感器、微声传感器、水流传感器、微几何测量传感器以及矢量水声传感器等。该类型传感器充分地将仿生学和MEMS技术结合起来,具有结构新颖精巧、体积小、功耗低、响应快、温漂小、精度高等优点,为开发具有自主知识产权的新型器件提供了新的思路。     

面向Python翻转课堂的图形动画案例库的设计

为了提高学生在翻转课堂模式下对Python语言进行自主学习的兴趣,开发一个基于Python Turtle库的图形动画案例库集成软件.在软件中可以直观地看到图形案例、动画程序、小游戏程序的运行效果及其实现代码.案例内容从简单到复杂,从静态到动态,有助于学生通过案例自主学习,在教学中取得了良好的应用效果.该软件可以应用于高职、高专Python翻转课堂教学中,也可以应用于Python爱好者的自学.     

油田设备智能润滑管理信息系统的设计

针对辽河油田公司在设备润滑管理方面所存在的问题,采用物联网、云计算、大数据分析和挖掘技术,设计开发了油田设备智能润滑管理信息系统.旨在以信息化手段来提升辽河油田公司的润滑管理水平,实现对油田设备全生命周期的精细化和智能化润滑管理.管理信息系统利用互联网技术将与之相涉及的各个方面联系在一起,实现了数据的自动采集、汇总、录入、统计和分析,使得润滑任务下达、结果上传和数据分享的准确性、及时性得到了有效保障.     

对分课堂在人机交互设计课程中的应用

人机交互设计课程涉及的知识面广、涵盖领域众多,采用传统授课方式很难激发学生的兴趣,导致授课效果不理想.对分课堂的授课方式将传统的讲授与课堂讨论相结合,将课堂时间一分为二,通过先讲授,再布置作业,最后展开隔堂讨论,进而达到内化吸收、巩固知识的效果.对分课堂可逐步改善人机交互设计课程中教师讲授和学生学习过程中所面临的困境,激发学生自主学习的动力,增强学生探索新知识的欲望和信心,达到授人以渔的目的.     

RLINK: Deep reinforcement learning for user identity linkage

World Wide Web - User identity linkage is a task of recognizing the identities of the same user across different social networks (SN). Previous works tackle this problem via estimating the pairwise...     

Effect of wafer size on the film internal stress measurement by wafer curvature method

Wafer curvature method has been applied to determine the internal stress in the films using Stoney’s equation. During the film deposition, the wafer fixation on the sample holder will restrict the deformation of the rectangle-shaped wafer, which may result in the stress datum difference along length and width direction. In this paper, the effect of wafer size and the wafer fixation on the TiN film internal stress measured by wafer curvature method was discussed. The rectangle-shaped wafers with different length/width ratios (L/W=1:1, 2:1, 3:1 and 4:1) were fixed as a cantilever beam. After the TiN films deposition, the profiles of the film/wafer were measured using a stylus profilometer and then the internal stress was calculated using the Stoney equation in the film. The results showed that the fixed end of the wafers limited to some degree the curvature of the wafers along the width direction. For film internal stress measured by wafer curvature method, the wafer profile should be scanned along the length direction and the scan distance should be greater than or equal to half of wafer length. When the length/width ratio of the wafer reached 3:1, the wafer curvature and the calculated stress were basically the same at different positions along the length direction. For film internal stress measured by wafer curvature method, it was recommended that the length/width ratio of wafer should be considered to be greater than or equal to 3:1, and the deformed profile was scanned along the length direction.     

对水利工程项目建议书阶段设计取费问题的讨论与建议

通过相关规范、法规进行分析,对于实行立项简化程序未编制项目建议书的水利工程,项目建议书阶段的设计工作应该取费,但不宜直接套用现行设计取费标准;建议根据项目特点在计算的设计费基础上按0.5～0.8的折扣系数取费。