基于半圆形局部二值模式结构相关性描述子的图像检索

针对传统的结构基元方法缺少对不同量化颜色层中的中心像素点与其潜在邻居的相似性信息描述问题,提出了一种半圆形局部二值模式结构相关性描述子,并将其应用在图像检索中.首先,定义了一种新的半圆形局部二值模式结构基元;其次,检测不同量化颜色层中的结构基元;最后,提取新结构基元的空间分布和对比度特征.相比传统的结构基元方法,提出的描述子检测的结构基元更加丰富,包含更多可能的结构区分性.在不同图像库上的实验结果表明了所提方法的有效性.     

滤正则序列与局部上同调

对交换代数中正则序列和深度的概念进行了推广,并利用局部上同调、短正合列诱导长正合列等同调代数手段及伴随素理想、局部化等交换代数内容和方法对推广的深度给了一些刻画.进一步,利用以上技术手段,对一些扩张群及局部上同调群的支集进行了刻画并研究了其性质.     

四面体络离子（CrO4）^4-电子顺磁共振g因子的理论计算

用四面体络离子（CrO4）^4-g因子完全高阶微扰公式计算了Ba3Ge2O7晶体g因子，与双SO耦合参数模型相比，荷移模型计算的g因子与实验值更接近。荷移模型获得的g因子与实验值的差仅为0．0003，而双SO耦合参数模型获得的g因子与实验值的差高达0．0249。     

岭南文化特色凸显与广东文化强省建设

岭南文化源远流长,并且在广东地区不断繁荣发展。岭南文化在近代民主革命和社会主义建设时期大放异彩。进入知识经济时代,在广东实施文化强省建设的新起点上,岭南文化仍然可以大有作为。深度挖掘岭南文化底蕴,打造地方特色文化品牌,能够在弘扬地方优秀传统文化、满足人民精神文化需求、保持经济持续快速增长和实现文化产业跨越发展方面,寻找一个最佳的契合点,这正是广东省文化强省建设的题中应有之义。     

Absolute scaling law for temperature data in Rayleigh-Benard convection

In addition to the hierarchical-structure (H-S) model,this paper further explores the most intensive intermittent structure of Rayleigh-Bénard convection at the high Ra numbers proportional to temperature.With respect to the discovery and by means of the scale,both of Bolgiano,there are two regions of the structure holding the absolute scaling law given by Ching's paper.Through theoretic analysis of data,this paper indicates that the regions act as two local intensive intermittent structures,by which the st...     

High speed robust image registration and localization using optimized algorithm and its performances evaluation

Local invariant algorithm applied in downward-looking image registration, usually computes the camera’s pose relative to visual landmarks. Generally, there are three requirements in the process of image registration when using these approaches. First, the algorithm is apt to be influenced by illumination. Second, algorithm should have less computational complexity. Third, the depth information of images needs to be estimated without other sensors. This paper investigates a famous local invariant feature named speeded up robust feature (SURF), and proposes a highspeed and robust image registration and localization algorithm based on it. With supports from feature tracking and pose estimation methods, the proposed algorithm can compute camera poses under different conditions of scale, viewpoint and rotation so as to precisely localize object’s position. At last, the study makes registration experiment by scale invariant feature transform (SIFT), SURF and the proposed algorithm, and designs a method to evaluate their performances. Furthermore, this study makes object retrieval test on remote sensing video. For there is big deformation on remote sensing frames, the registration algorithm absorbs the Kanade-Lucas-Tomasi (KLT) 3-D coplanar calibration feature tracker methods, which can localize interesting targets precisely and efficiently. The experimental results prove that the proposed method has a higher localization speed and lower localization error rate than traditional visual simultaneous localization and mapping (vSLAM) in a period of time.     

基于混合粒子群的多目标智能排活系统的优化

通过分析多目标智能排活系统中各要素的相互关系,提出了PSO与局部搜索策略的混合算法,并引入新的学习策略进行分层局部优化,多目标分散搜索逐步缩小复杂的搜索空间,改善了PSO算法的早熟收敛问题,并取得较高的求解质量。采用了一种随机键的编码方式,利用析取图编码将有序表作为优先决策来决定发生冲突时各印刷活件的排列顺序。仿真验证了混合算法的有效性。     

三维弹性静力问题的无网格局部Petrov-Galerkin法

将二维平面问题的无网格局部Petrov-Galerkin法拓展到三维的相应理论中，编制了该法相应的三维Fortran程序.分析了均匀受拉立方体和悬臂梁两个经典算例，将所得结果与有限元法和解析解对比.结果表明了无网格局部Petrov-Galerkin法在解决三维弹性静力问题时的可行性和有效性，相对于有限元方法在位移解和应力解上也具有更好的精度.     

半导体Ge的能带计算

用紧束缚[1]方法计算了Ge晶体能带Ge的点能量.计算结果与Chadi[2]的实验值及吻合较好,与K·C Pondoy[3]的计算值比较接近,比Cohen and TR·Bergstresser[4]的计算值精确.     

多重延迟的关键更新定理及其在风险理论中的应用

利用广义局部次指数分布族的性质, 讨论了带有多重延迟且Lundberg指数不存在时的关键更新定理, 所得结果包含了重尾和轻尾的情形. 将此结果应用到平稳更新风险模型, 得到了该模型在破产时亏损额分布的局部渐近性质.