三维离散点采样表面基于全局优化的纹理合成算法

提出了一个直接在三维离散点采样表面上进行基于全局优化的纹理合成算法．算法首先对点模型表面进行基于协方差分析的递归式聚类削分，然后通过对各初始聚类进行优化调整和区域生长，得到更为均匀的计算单元块且使相邻单元块间具有重叠区域．基于所得到的计算单元块和样本纹理，在点模型表面上建立了一个全局的纹理合成能量方程，并采用最大期卑值算法迭代优化求解出一个全局的能量最小值．在全局优化算法中，通过加入的约束条件，进而给出了点模型颜色纹理的修复算法和流引导的可控纹理合成算法．由于点模型表面离散点元的稠密性，通过对离散点元的法向基于纹理合成结果进行相应的扰动，进一步增强了表面纹理的几何粗糙感．实验结果表明，该文的算法在点采样几何表面上有效地保持了生成的纹理结构和视觉效果的连续性和平滑性，得到了令人满意的结果。     

5万m3威金斯干式橡胶密封煤气柜检修

通过对5万m3威金斯干式橡胶密封煤气柜试漏、调平检修,归纳出气柜出现漏点原因及处理方法;活塞调平的方法,并对气柜的日常维护进行了总结。     

Predicting Improvement After First-Grade Reading Difficulties: The Effects of Oral Language, Emergent Literacy, and Behavior Skills.

This study investigated the role of early literacy and behavioral skills in predicting the improvement of children who have experienced reading difficulties in 1st grade. The progress of 146 low-income children whose reading scores in 1st grade were below the 30th percentile was examined to determine (a) how the poorest readers in 1st grade progressed in reading achievement through 4th grade and (b) which emergent literacy and behavioral skills measured in kindergarten predicted differential 4th grade outcomes. Results indicated that the divergence between children who improved and those who did not was established by the end of 2nd grade. Further, individual linguistic skills and behavioral attributes measured in kindergarten contributed substantively to this difference. Implications for intervention timing and educational policy are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

650轧辊的堆焊修复

对轧辊断裂部位进行了分析，找出了裂纹形成的主要原因。通过采取焊前预热、低氢焊接和焊后热处理等措施，成功地实现了650轧辊端头断裂的堆焊修复，即以焊代换。同时,延长了轧辊服役周期。     

受拉钢筋暴露的钢筋混凝土梁承载力研究

在钢筋混凝土梁修复加固过程中，常常可能除去梁上部分破损的混凝土，使钢筋外露，在荷载作用下，造成梁的力学反应发生变化。本文提出了计算部分受拉筋暴露的钢筋混凝土简支梁承载力的方法，给出了在荷载作用下梁的应变变化情况，理论分析结果与实验结果吻合良好。     

基于实例推理的电子工艺规划

本文针对PCB检修工艺中存在的效率低下、标准不统一的问题，提出了一种基于实例推理的工艺规划。在阐述基于实例推理基本原理的基础上，构造了一种推理模型，并讨论了实例匹配算法。实际应用表明，这种设计方案有效地提高了PCB检修工艺的设计效率。     

浅谈电炉变压器换档开关

本文主要分析M型带载换档开关结构、工作原理和换档过程的伏安特性，并结合广钢电炉设备多年来的运行和管理情况，提出对M型换档开关的维护和检修意见。     

螺旋缠绕双联管深冷换热器及其检修技术

从原理和结构入手，介绍了化工领域气体深冷分离过程的核心设备——螺旋缠绕双联管深冷换热器的技术参数、结构及特点，详细阐述了泄漏的检修技术。     

设备检修企业改革发展与转型升级的思考

文章就攀钢集团内部维修企业存在的问题进行了剖析,提出了在市场条件下维修企业改革调整和转型升级的思路.     

Direct repair of self-intersecting meshes

A fast and exact algorithm to eliminate intersections from arbitrary triangle meshes is presented, without any strict requirement on the input. Differently from most recent approaches, our method does not rely on any intermediate representation of the solid. Conversely, we directly cut and stitch mesh parts along the intersections, which allows to easily inherit possible surface attributes such as colors and textures. We rely on standard floating point arithmetics whenever possible, while switching to exact arithmetics only when the available fixed precision is insufficient to guarantee the topological correctness of the result. Our experiments show that the number of these switches is extremely low in practice, and this makes our algorithm outperform all the state-of-the-art methods that provide a guarantee of success. We show how our method can be exploited to quickly extract the so-called outer hull even if the resulting model is non manifold by design and the single parts have boundaries, as long as the outer hull itself is unambiguously definable.