大连快轨车辆接触器和继电器故障分析与改造

对大连快轨矗号线车辆的部分接触器和继电器频繁发生故障的情况进行了分析，并且对相关接触器和继电器的改造作了详细的论述。     

城市综合交通系统评价指标体系及评价方法

对现有的城市综合交通系统进行改善，首先应对其进行客观全面的描述和评价，找出问、题的根源，为系统改善提供依据。探讨了城市综合交通系统评价指标体系。利用层次分析法和模糊数学理论，建立了评价计算的具体方法，并进行了实例分析。     

缓和曲线数学模型在公路施工中的应用

分析缓和曲线的数学模型，推理缓和曲线点位坐标的计算公式，检测缓和曲线实地放样的数学方法，达到公路施工应用的目的。     

地方本科院校工程应用型人才培养模式的研究与实践

经济社会的发展对应用型人才的要求越来越高,如何培养高质量的应用型人才已成为高校和社会关注的焦点.湖北汽车工业学院在长期的办学实践中,依托大工程背景,坚持产学研结合,积极探索教育与生产实践相结合的新形式,以社会需求为导向培养应用型人才,取得了显著的实践效果.本文将以湖北汽车工业学院为个案,在知识体系和课程内容改革、实践教学体系的建立以及"双师型"师资队伍的培养等方面开展对应用型人才培养模式的研究和实践.     

A semi-fragile wavelet transform watermarking scheme for content authentication of images

A novel semi-fragile watermarking scheme for the content authentication of images using wavelet transform (WT) is presented in this paper. It is tolerant to the embedded wavelet image compression methods based on WT such as embedded zerotree wavelet (EZW), set partitioning in hierarchical trees (SPIHT) and embedded block coding with optimized truncation (EBCOT) in JPEG2000 to a pre-determined bit-plane, but is sensitive to all other malicious attacks. The image features are generated from the lowest-frequency (LF) subband of the original image as the embedded watermark. The watermark is embedded into the pre-determined bit-plane by adjusting the corresponding values in the given subband. In the process of watermarking authentication, we compare the image features generated from the LF subband of the received image with the embedded watermarking information (the image features of the original image) extracted from the pre-determined bit-plane in the given subband of the received image to decide whether the image is attacked maliciously or processed acceptably (the embedded wavelet compression). The most important advantage of our watermarking scheme is that the watermark information can be extracted from the watermarked image when detecting watermark, so the received image authentication needs no information about the original image or watermark. Experimental results prove the effectiveness of our proposed watermarking scheme.     

骨膦治疗骨转移癌25例疗效分析

对１９９３～１９９６年住院治疗的２５例骨转移癌患者采用单用骨膦治疗的方法，观察其对骨转移癌患者的止痛效果、骨病灶变化和不良反应。结果∶疼痛完全缓解５例（２０％），部分缓解１１例（４４％），无效９例（３６％），总有效率为６４％；骨病灶控制率为１２％（３／２５）；不良反应仅有轻微恶心。提示∶骨膦是治疗骨转移癌较理想的药物。     

沿海港口公用航道维护分类标准浅析

港口实行"政企分开"后,港口公用基础设施(如公用航道)的建设和维护管理责任,将全部转移到港口所在的地方政府.由于资金短缺,公用航道维护工作被淡化,甚至有被放弃的趋势,因此有必要对公用航道维护实行一定比例的资金补贴.如何建立一个合理的公用航道维护分类标准,并据此对公用航道维护进行资金补贴,对提高补贴资金的运营效率和确保航道维护工作顺利进行均具有重要意义.     

称重传感器性能及相关参数的测量

简要介绍称重传感器基本构成，工作原理，称重传感器基本参数测量原理和测试方法，故障分析及判断。     

RTK技术在广州地铁四号线定测中的应用

介绍了RTK的基本作业方法,以广州地铁四号线为例,阐述了RTK技术在定测中的具体操作方法和应该注意的问题。     

Airport obstacle surfaces

The most commonly used criteria to determine complicated airport obstacle surfaces are FAR Part 77 imaginary surfaces, TERPS, and the one engine inoperative obstacle identification surface for air carriers. For each obstacle surface there are tradeoffs encountered in our practice between the obstruction penetration and extension of runway, change of flight profile, and allowable aircraft maximum payloads. For the purposes of both airport engineering and airport planning, a better understanding of these different obstacle surfaces and their application is important. In this paper, the differences and relationships between these surfaces are addressed. The conditions for the use of each criterion are discussed. In addition, the FAA's Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) process is reviewed.