大型喷浆机器人的灵巧度分析

灵巧度是衡量机器人运动失真程度的重要参数。对机器人灵巧度评价指标进行了对比研究 ,结合大型喷浆机器人自由度较多的特点 ,用雅可比矩阵的条件数对喷浆机器人的灵巧度进行了分析。结果表明 ,大型喷浆机器人在不同形位下的条件数都很小 ,具有较好的运动灵巧度。     

Face Recognition Based on Support Vector Machine and Nearest Neighbor Classifier

Support vector machine (SVM), as a novel approach in pattern recognition, has demonstrated a success in face detection and face recognition. In this paper, a face recognition approach based on the SVM classifier with the nearest neighbor classifier (NNC) is proposed. The principal component analysis (PCA) is used to reduce the dimension and extract features. Then one-against-all stratedy is used to train the SVM classifiers. At the testing stage, we propose an al-     

用于图像目标识别的神经网络方法

本文提出了一种全局最优的神经网络（ＦｕｌｌＤｏｍａｉｎＯｐｔｉｍｕｍＮｅｕｒａｌＮｅｔｗｏｒｋ）模型用于目标识别。通常所设计的神经网络不能保证全局最优，使得网络不一定收敛到期望样本点上。本文的模型采用了先设计稳定点、再构造吸引域的方法，提高了网络的识别正确率及速度。针对图像识别中矢量维数大的实际，提出了一种不变性方法，使得样本维数下降而分类距离保持不变。同时又证明了网络的收敛性、收敛速度及映射保距等。计算机模拟结果表明，网络对噪声或缺损图均能正确识别。     

人文视野里的语文和语文教育

人文是人对自身本质特性的思索和探寻,包括理想人性及其实现方式,这种实现方式在人类社会主要体现为文化行为.人文视野里的语文表现出学科文化内蕴的综合性,言语符号内容与形式的同步性,人文精神展示的完整性等突出特点.要在语文教学中凸现人文性,必须注重教学行为的人文方式,教学材料的人文底蕴,文本解读的人文基点.     

基于Windows NT的HRPS-Ⅱ设备的控制系统设计

介绍了华中科技大学开发的HRPS-Ⅱ型选择性激光烧结设备的体系结构，根据选择性激光烧结的工作原理并结合该系统的硬件结构开发了基于NT操作系统下的控制软件．该控制软件是一种分层的结构，各个不同优先级的任务在不同的层面上运行，实时性强的部分运行在硬件中断级别上，对控制软件的关键性技术进行了描述．通过试验运行，该设备成功地加工出了复杂的原型件，证明控制系统开发是成功的．     

制定企业标准，为企业发展保驾护航——论富阳市涂布白纸板生产企业制定企业标准的必要性

GB／T103354—2004《涂布纸和纸板涂布白纸板》对富阳市涂布白纸板生产实际存有不适用之处，为符合法律法规和企业自身发展需求，企业必须制定充分反映市场、用户和消费者要求的企业标准。     

论中部崛起进程中的江西教育发展战略

新时期,江西提出并实施了要在中部地区快速崛起的发展战略。在这一过程中,江西教育发展面临着极好的机遇,同时,也遭遇到了八个方面的挑战。于是,江西省委省政府提出了江西教育发展的总体要求。江西广大教育行政部门和教育工作者只要不断沿着中央指出的方向,落实省委省政府的部署,埋头苦干、扎实工作,就一定能为建设创新创业江西、绿色生态江西、和谐平安江西,为江西在中部地区的早日崛起提供有力的人才支持、知识基础和文化贡献,就一定能铸造出江西教育事业新的辉煌。     

A rapid and accurate 3-(4,5-dimethyl thiazol-2-yl)-2,5-diphenyl tetrazolium bromide colorimetric assay for quantification of bacteriocins with nisin as an example

The objective of this study is to propose a more accurate and faster MTT [3-(4,5-dimethyl thiazol-2-yl)-2,5-diphenyl tetrazolium bromide] colorimetric assay (MCA) for quantitative measurement of polypeptide bacteriocins in solutions with nisin as an example. After an initial incubation of nisin and indicator bacterium Micrococcus luteus NCIB 8166 in tubes, MTT was added for another incubation period. After that, nisin was quantified by estimating the number of viable bacteria based on measuring the amount of purple formazan produced by cleavage of yellow tetrazolium salt MTT. Then MCA was compared to a standard agar diffusion assay (ADA). The results suggested a high correlation coefficient (r ²=0.975±0.004) between optical density (OD) and the inhibitory effect of nisin on a bacterial strain Micrococcus luteus NCIB 8166 at a range of 0.125~32 IU/ml. The MCA described in this study was very quick. Quantification of nisin took only 7~8 h and the detection limit was at the level of 0.125 IU/ml when compared to 12 IU/ml and 24~28 h for ADA. The MCA provides an accurate and rapid method for quantification of nisin in solutions and is expected to be used for quantification of other antimicrobial substances.     

Amniotic membrane transplantation for porous sphere orbital implant exposure

Objective: This study is aimed at describing the clinical outcome of amniotic membrane transplantation for exposure of porous sphere implants. Methods: A retrospective review of consecutive cases of porous sphere orbital implant exposure was carried out. Eight cases were presented between May 2004 and Oct. 2006 (5 males, 3 females; mean age 44.5 years). Six had enucleation and two had evisceration. Exposure occurred in two primary and six secondary. Orbital implant diameter was 22 mm in seven cases and 20 mm in one case. Six patients are with hydroxyapatite and two with high-density porous polyethylene (Medpor) orbital implants. The mean time from implantation to exposure was 1.1 months (range 0.8~2 months). All patients required surgical intervention. Results: The time of follow-up ranged from 3.0 to 28.0 months (mean 16.5 months). Amniotic membrane grafting successfully closed the defect without re-exposure in all of these patients. The grafts were left bare with a mean time to conjunctiva of about 1 month (range 0.8~1.5 months). Conclusion: Exposed porous sphere implants were treated successfully with amniotic membrane graft in all of patients. The graft is easy to harvest. This technique is useful, dose not lead to prolonged socket inflammation and infection, and it is valuable application extensively.