综合超前地质预报在熊洞湾隧道施工中的应用

采用"平导超前,物探先行,钻探验证,综合分析,反馈施工"的综合超前地质预报方法,及时、准确地监测熊洞湾隧道的地质状况,弥补了勘察设计对地质资料的遗漏,指导在断层、煤层、瓦斯、煤窑采空区、岩溶等不良地质段的隧道施工,保证隧道施工的安全和进度.     

隧道水平收敛观测值与实际值不一致的原因分析

监控量测是隧道施工信息化管理的关键环节,通过系统分析隧道水平收敛观测值与实际值的差异性,找出偏差产生的原因,导出偏差量的计算公式,用以修正隧道监控实测数据.     

梅岭关隧道施工期瓦斯环境的闭环评价与管理

基于计算机网络平台,建立了瓦斯隧道安全信息收集、传输及识别系统,实现了瓦斯环境的流程化与信息化管理,应用该系统对梅岭关隧道的瓦斯安全进行即时评价、保证施工安全.     

Range profile target recognition using sparse representation based on feature space

A novel method is presented to improve the recognition rate of warhead in this paper. Firstly, a tool for electromagnetic calculation, like CST Microwave Studio, is used to simulate the frequency response of the electromagnetic scattering. Secondly, the echo and further the range profile are acquired from the frequency response by further processing. Thirdly, a set of discriminative features is extracted from the range profiles of the target. Fourthly, these features are used to construct a dictionary for the sparse representation classifier. Finally, the sample of the target can be classified by solving the sparsest coefficients. Since the reconstruction result is determined by a linear combination of the training samples, this method has a good robustness for the variable features. By formulating the problem within a feature-based sparse representation framework, the presented method combines the discriminative features of each sample during the sparse recovery process rather than in a postprocessing manner. Moreover, based on the feature representation space rather than a single feature or image pixel, the constructed dictionary exhibits both strong expressive and discriminative powers that can enhance the classification performance of the test sample. A series of test results based on the simulated data demonstrates the effectiveness of our method.     

浅议创新创业型人才的培养机制

文章针对我国大学生就业难的问题,提出培养创新创业型人才的重要性,分析了创新创业型人才的基本特征,指出了创新创业型人才的关键问题,最后给出了创新创业型人才的培养机制的建议。