东莞地名语言及文化研究——兼论言语社区理论在地名研究中的应用

地名是一种语言符号,也是一种文化符号。东莞作为岭南文明的重要发源地、中国近代史的开篇地、改革开放后的世界工厂,其地名有着显著的语言和文化特征。本文以言语社区理论为指导,分析了东莞地名的构词特征,并重点阐释了其文化内涵。文章还对东莞地名的规范化问题提出了具体的意见。     

一种二维均值滤波快速算法及其应用

作者将盒滤波技术成功的应用于基于灰度立体匹配中的相似性测度的计算和数学形态学中矩形结构元素的处理中 ,算法的复杂性被大幅度的降低 .另外 ,还对盒滤波技术进行了实际应用的改进 ,进一步减少了整个运算的时间 .     

陕北油田黄土工区道路冲蚀灾害模型试验研究

为探究陕北油田黄土工区道路冲蚀灾害特征及路面细沟冲蚀影响因素,采用物理模型试验,模拟径流冲刷砂黄土道路,对道路细沟冲蚀发育过程,不同工况下细沟长度、平均宽度以及平均深度的发展特征和产沙速率变化规律进行了研究。结果表明:细沟的发育过程可分为四个阶段:面蚀阶段—跌坑形成阶段—细沟发育阶段—切沟侵蚀、崩塌阶段。细沟长度、平均宽度和平均深度与放水时间成幂函数关系,随着放水时间的增大而增大。其中细沟长度随着试验时长的增加先急剧增加,然后逐渐减少;细沟平均宽度随试验时长的增加总体呈现先快速增加后增加速度减慢;平均深度变化速度均在某一时刻达到拐点,流量越大达到拐点的时间越早。冲蚀灾害受流量和坡度影响显著,总体上随着坡度和流量的增大而增大;产沙速率总体上与流量成线性关系,在其他条件一致的情况下,产沙速率随着流量的增大而增大;与南部的粉黄土和黏黄土相比,陕北油田工区的砂黄土产沙速率明显偏大,冲蚀灾害更为严重。     

多花黑麦草的形态与细胞结构解剖

本研究通过对多花黑麦草 (L olium multiflorum)的植株、花、果的形态特征及种籽的果皮、种皮、胚芽、胚根鞘和盾片的上皮细胞、胚乳的淀粉和糊粉层细胞的组织细胞结构进行鉴别比较和综合分析 ,尤其是对多花黑麦草籽实是否含有与引起同属的毒麦籽实产生毒麦硷 (Temuline- C7H12 N2 O)的类似寄生病菌进行了研究与探讨 ,为口岸杂草检验检疫和牧草的引进、生产提供依据。     

Study on Surface Optimization by Ion Beams

Preliminary tribo-mechanical properties of IBED filmsof GCr15 bearing steels have been studied in this paperalong with the comparison between IBED films and PVDfilms as well as non-implanted surface in wear resis-tance,micro-hardness,friction and surface morpholo-gy.Experiments gave a consistent picture and statedclearly that TIN films can really improve the tribo-me-chanical properties of materials and have practical usesin a certain sense.However,further theoretical and ex-perimental studies must be performed in respect thatthere are some defects on IBED films.     

民间艺术中“脸”的形态表现

“脸”作为一个视觉语言，是人类始终关注的话题，自然形态中的脸只是作为个体存在的符号，是一种个体标记，人类为了满足宗教、战争和美化身心的种种需要，以符号为手段的脸的艺术造型形式是原始先民对人自身的存在形式不满足而进行的改造，新的形式从此就应运而生。脸作为一种符号，其最初的呈现状态是以纹样的方式展现出来的，被赋予了神秘的色彩，是人类实践经验、情感以及文化的交流与发展的延续。     

Morphological characteristics of α-Al2O3 crystallites obtained direct1y from hydro /solvothermal solvents

The morphological characteristics of α-Al₂O₃ crystallites obtained directly from hydro/solv othermal solvents are reported and the formation mechanisms of corundum morphology are discussed from crystal growth and crystal chemistry principles. The crystal growth process is considered as a process of incorporation of growth units on the growth interfaces, and the crystal morphology is determined by the linkage of the coordinated polyhedra.     

地图中的居民区目标识别系统

提出一种识别地图中一类典型块状目标——居民区目标的频域匹配方法，并据此实现了一完整的识别系统．首先，根据居民区目标具有的团块结构，利用目标区域到其主轴的“均方根距离”作为对其线性度的衡量，剔除部分明显的非居民区目标，加快后续处理速度；然后，利用居民区目标具有的固定填充模式的特性，利用频域匹配方法实现对居民区目标的精确定位；最后，采用数学形态滤波的方法实现对目标形态的调整，并生成边界链码以便重建和查询．用具有中等复杂程度的１∶５００００的实际地图对该系统进行测试，取得了较为满意的效果．     

基于形态滤波的电视跟踪系统

介绍了一种以多DSP处理器技术的数字式电视跟踪系统,利用FPGA控制,主要研究了利用形态滤波方法对跟踪目标进行采集和处理。实验验证了本系统可有效减轻DSP的速度负荷,对识别和跟踪低空、超低空小目标具有良好的作用,具有较高性能。     

Influences of Electrolytes on Soap-Free P(ST-MMA-AA) Emulsion Polymerization

1Introduction Functional polymer microspheres are kinds of polymer particles with special structures, morphologies or functional groups[1] , and have been gained much attention because of their specific properties and their application since 1980s. Although some researches have investigated that the latex particle size and its distribution,as well as the stability of polymerization and the resultant latex were strongly influenced by introducing electrolyte into the emulsion polymerization system[2] , few of them focused on the systematic study of electrolytes on the soap-free emulsion polymerization, which is considered as a conventional approach to synthesize functional polymer microspheres with clean surfaces[2]. In this presentation, the influences of variety and dosage of electrolytes on soap-free emulsion polymerization of St, MMA and AA were studied, and a series of micron or submicron sized latex particles with narrow distribution were obtained.