Matching Trajectories of Anatomical Landmarks Under Viewpoint,Anthropometric and Temporal Transforms

An approach is presented to match imaged trajectories of anatomical landmarks (e.g. hands, shoulders and feet) using semantic correspondences between human bodies. These correspondences are used to provide geometric constraints for matching actions observed from different viewpoints and performed at different rates by actors of differing anthropometric proportions. The fact that the human body has approximate anthropometric proportion allows innovative use of the machinery of epipolar geometry to provide constraints for analyzing actions performed by people of different sizes, while ensuring that changes in viewpoint do not affect matching. In addition, for linear time warps, a novel measure, constructed only from image measurements of the locations of anatomical landmarks across time, is proposed to ensure that similar actions performed at different rates are accurately matched as well. An additional feature of this new measure is that two actions from cameras moving at constant (and possibly different) velocities can also be matched. Finally, we describe how dynamic time warping can be used in conjunction with the proposed measure to match actions in the presence of nonlinear time warps. We demonstrate the versatility of our algorithm in a number of challenging sequences and applications, and report quantitative evaluation of the matching approach presented.     

循环流化床返料机构的研究

本文主要对各种形式的颗粒返料机构进行了研究。根据实验结果和理论分析,本文提出了高浓度气固混合物在L阀中流动时的压力损失的计算公式。本文还提出了L阀和流化床返料机构的设计方法。并给出了设计所需要的全部计算公式。     

不同燃烧器高宽比下炉内空气动力特性的试验研究

本文应用相似模化理论对烟煤型燃烧器进行炉内冷态试验研究.通过对一次风射流的偏转,炉内气流的旋转强度、充满程度,燃烧器射流两侧的补气条件,炉膛出口的速度分布等特性随着燃烧器高宽比H/B的变化规律的研究,提出了较为理想的大型电站锅炉烟煤型燃烧器高宽比的范围,为指导电站锅炉燃烧器的设计和改造提供理论参考。     

长江南京三桥建桥后船舶航行过程数值模拟

建立了船舶运动基本方程，通过实船静水操纵性能试验比较，操纵性指数与实测基本一致，由于南京三桥修建后，破坏原来的航线，需要规划新的航线，新航线考虑了船舶的习惯航线以及桥墩对原来的航线的影响，运用该数模计算新航线的船舶操作参数的变化，结果表明，上行船队和下行船队的各级流量船舶航行操作参数变化较小，说明新航线选择合理。     

周向进油、浅腔节流的动静压滑动轴承的有限元－优化综合分析

本文讨论一种只靠浅腔节流的动静压轴承并对此进行了有限元分析和优化计算，建立了有限元－优化迭代的计算模型，编制了计算机程序，给出了主要设计参数的优化结果和该节流形式的相当节流比．     

Study on Agglomeration and Densification Behaviors of Gadolinium-Doped Ceria Ceramics

By synthesizing reactive powders via a self-sustaining combustion synthesis, the glycine-nitrate process, the gadolinium-doped celia （GDC） with the chemical formula Ce0.8Gd0.2O1.9 was prepared. The resultant powders were dispersed with the terpineol as the dispersant through different methods such as ball milling and high-shear dispersing. Coagulation factor （CF） was used to mark the degree of agglomeration on the nano-scale GDC in this work. The effect of agglomeration on the densification behavior at different sintering temperatures was investigated. The studies indicated that agglomeration retarded the densification at the sintering stage. The powders with better dispersion exhibited a higher sintered density at the same temperature. After effective dispersion treatment, GDC could be fully densified at the sintering temperature of 1300 ℃. The densification temperature was significantly lower than those reported previously. The high sintering kinetics of the ceramics was obtained based on the agglomeration control.     

服务接触单元感知质量的估算方法

提出由顾客的质量感知、服务接触的构成要素、服务接触属性构成的服务接触单元概念,以模糊集合对其进行数量化表示,用模糊统计方法测评其总体评价值.提出基于模糊贴近度的指数平滑估算方法,应用逐项贴近度最大的原则对历史数据进行排列,从而只需积累一定数量的分指标和总体评价值就可从被测服务接触单元的分指标值估计总体评价值.     

驻点法在桩群模拟中的运用

采用有限元方法建立了二维平面水流模型，并引入驻点的概念模拟水中桩柱对水流的影响，即在计算中将网格节点设置于桩柱处，并在该节点设置滞流边界条件，即流速为0m／s．以长寿朱家坝码头的高桩码头方案为算例进行了模拟计算，结果表明该方法可以较好地模拟桩群对水流流速、流态的影响．     

基于深度的3D视频质量评价

针对3D视频质量评价,基于人眼视觉系统HVS提出了一种新的加权SSIM评测方法.利用MVD深度视图空间和时间上的特性,提取主观权值映射,基于SSIM利用权值映射使得到了基于深度的SSIM加权算法DSSIM.实验结果表明,DSSIM比PSNR更趋近于HVS,比SSIM更充分地考虑了3D结构信息,得到更准确的3D视频质量评价.