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为结合相关规划和自身“河岸周边”城市空间特点,从两岸慢行联系方向进行提升,通过研究国内外“河岸周边”慢行通道发展现状,分析其规划和建设的特点,结合相关要求提出澳门-珠海慢行通道发展策略,以期有效促进大湾区的协调发展。 相似文献
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为了研究波形钢腹板简支曲线组合梁在弯扭复合作用下的挠度及扭转角效应,根据波形钢腹板自身的结构特点,考虑曲梁曲率、箱梁剪力滞效应、剪切变形和扭转变形,利用最小势能原理和变分法推导了弯扭效应微分方程,并采用伽辽金法进行求解,得到了竖向均布荷载下波形钢腹板简支曲线组合梁的挠度、扭转角的解析解,将计算结果与有限元模型计算结果进行了对比,结果吻合良好。 相似文献
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A novel approach based on independent component analysis (ICA) for speckle filtering and target extraction of synthetic aperture radar (SAR) images is proposed using adaptive space separation with weighted information entropy (WIE) incorporated. First the basis and the independent components are respectively obtained by ICA technique, and WIE of the image is computed; then based on the threshold computed from function T-WIE (threshold versus weighted-information-entropy), independent components are adaptively separated and the bases are classified accordingly. Thus, the image space is separated into two subspaces: "clean" and "noise". Then, a proposed nonlinear operator ABO is applied on each component of the 'clean' subspace for further optimization. Finally, recovery image is obtained reconstructing this subspace and target is easily extracted with binarisation. Note that here T-WIE is an interpolated function based on several representative target SAR images using proposed space separation algorithm. 相似文献
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