应用近景摄影测量检测大型工业设备变形

对近景摄影测量检测大型匀矿机变形进行了介绍和讨论，并对该方法进行精度分析，通过某钢铁厂的大型匀矿机变形检测实例，以及将近景摄影测量的结果与电子全站仪法测量的结果进行比较，证明该方法快速、准确，在大型工业设备及房屋建筑检测中有良好的应用前景。     

柔性机械臂逆动力学问题的分析和求解

采用割线坐标系对机械臂的运动进行了描述 ,并分快变和慢变两方面进行逆动力学问题的分析与求解 .在对快变部分逆动力学性质的分析中发现 ,快变部分精确的逆动力学解是发散的 .在进行柔性机械臂逆动力学求解时 ,应在慢变的意义上进行 .文中给出了一种去掉系统快变部分的简单方法 ,并进行了逆动力学求解 .数值仿真结果表明 ,该处理方法是合理的     

波式滚动活齿传动内齿轮齿廓曲线的选择

论述波式滚动活齿轮齿廓曲线的两种选择：内摆线的等距曲线、密切圆弧曲线的理论成因。     

外源三唑酮对玉米幼苗某些抗逆生理指标的影响

在干旱胁迫条件下，经0－1000mg/L三唑酮溶液处理的玉米幼苗叶片中，相对含水量和水势均增加，细胞的相对电导率降低，气孔开张率降低，幼苗植株矮化，但地上部鲜重增加。     

Biodegradation of the Oil Hydrocarbons in Wastewater with Immobilized Microbiological Activated Carbon

On the basis of laboratory-scale-tests, the method of using immobilized biological activated carbon (IBAC) was found to be an efficient method to treat oil wastewater. In this research, pilot-scale studies were conducted to investigate the optimal range of factors, such as oil concentration, and hydraulic retention time (HRT). 39 strains of bacteria were isolated from activated sludge of a petrochemical wastewater treatment plant. After being acclimated and identified, these bacteria were immobilized on granular activated carbon. The degradation of organic compounds was analyzed by gas chromatography-mass spectromtry(GC-MS). As the results show that when the oil concentration is lower than 50 mg/L and corresponding values of HRT are longer than 1.0 h, the removal rate of immobilized biological activated carbon column can stably reach at least 70%. In the field studies, electron microscope analyses show that the predominant bacteria have been changed from Pseudomonas and Bacillus at the beginning to Bacillus only after 60 days of continuous operation, which suggests that the method with immobilized biological activated carbon column is the one with higher efficiency than that of the secondary floatation tank traditionally used in oil wastewater treatment.     

代理保护与封闭代理空间模型研究

代理安全是移动代理系统安全中的一个重要问题，而从理论和实践上来看，保护代理的安全目前都是一个难题。从代理的角度来看，代理平台就是计算可信基。只有确保代理的计算可信基，提供一个安全的封闭代理空间，才可能真正保护代理的安全。通过论述代理的安全问题和各种现有保护机制，提出利用封闭的代理空间模型来确保代理的安全是目前的一种可行的手段，分析了模型的安全性。并提出采用尽量少和尽量简单的技术来实现封闭代理空间，减少各种技术间的相关性依赖，为安全的移动代理应用平台提供稳定的安全的环境。     

Shadow free texture acquisition of a large scale scene for city modeling

Texture acquisition of a large scale scene is one of the critical research areas in computer vision and can be used in other application areas such as computer graphics (CG), the intelligent transportation system (ITS) and the 3D geographic information system (GIS). Moreover, to acquire texture without noise (e. g. , a shadow, an obstacle body) is vital for such work. Although obstacles can be removed by using 3D geometric data, shadow elimination is still a difficult problem and strongly required for the CG and ITS community, especially for city modeling and simulation purposes. In this paper, we propose an automatic multiple image fusion technique and an efficient and simple shadow removing technique to retrieve high quality texture images of an urban area. The image fusion can be efficiently achieved by epipolar plane image (EPI) analysis, and the shadow elimination can be successfully carried out by an illumination-independent color clustering technique. The strength of this algorithm is that we can successfully fuse multiple images and eliminate shadows from the fused single image, especially in low dynamic range images, which have proven difficult using previous techniques.     

La_(0.67)Ca_(0.33)Mn_(1-x)Cr_xO_3 (0.00≤x≤0.15)中的输运机制与CMR效应研究

研究了Mn位掺Cr体系La0 67Ca0 33Mn1-xCrxO3(0)(0 0≤x≤0 15)的庞磁电阻(CMR),发现Mn位掺Cr时零场电阻率曲线出现附加峰,随着Cr含量的增加,起始电阻率峰值逐渐减弱,附加峰急剧上升。在磁场作用下,两个电阻率峰值被强烈压缩,导致CMR效应中出现双峰,并且CMR效应的温区大大拓宽,从低温到接近室温。这个结果表明:Mn位元素替代是调整CMR效应的有效方法。     

电子商务专业课程设置与教学模式探索

在分析中国企业对电子商务人才需求状况的基础上,结合教学实践,提出了教学内容依据知识、能力、素质进行模块化的课程设置方案以及分阶段培养、与企业需求零距离整合的教学模式,并在教学实践中初步检验了这种课程设置方案的合理性和教学模式的有效性.     

利用目标方位信息改善雷达距离像识别性能

由于雷达的高分辨距离像对方位变化非常敏感,模板库中对每个目标都必须按较小的方位范围建立所有有关方位的模板。如果能够得知目标的大致方位角,可以缩小搜索范围,减小运算量。具体研究利用目标方位信息对识别率的影响,发现测试样本在类内匹配时,总是与附近方位的模板距离最小,而在类间匹配时,"最佳匹配"的经常是不同方位的模板,因此,利用目标方位信息基本不改变类内距离,但可以增大类间距离,从而提高识别率。仿真结果表明,利用方位信息是雷达目标识别的有效措施。