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关键词： 圆形沉井   井壁应力   隔墙   数值模拟  

摘要： 市政工程中非开挖技术的推进使得顶管沉井利用率不断提升,而大型圆形沉井具有直径大、下沉深、自重大的特点,井壁受力复杂,往往需要设置隔墙以增加刚度、减小井壁受力跨度。本文依据某工程案例,对圆形沉井井壁进行了土压力计算和数值模拟计算,对比分析了沉井隔墙对井壁应力分布的改善作用,为工程设计施工提供理论基础和设计依据。

关键词： Hyperspectral image classification   Complex-valued wavelet neural network   (CVWNN)   Convolutional neural network (CNN)   Deep feature extraction  

摘要： The number of spectral bands obtained by hyperspectral sensors improves the ability to distinguish physical objects and materials. But it also brings new challenges to image classification and analysis. In this study, a novel deep learning-based hybrid model called CNN-CVWNN is presented for the hyperspectral images classification (HSIs). The model uses a convolutional neural network (CNN) to extract multilayer image representation and uses the complex valued wavelet neural network (CVWNN) to classify the image using extracted features. The process steps of the proposed method are briefly as follows. First of all, the CNN algorithm has been applied to hyperspectral images. After this stage, efficient features have been obtained. These extracted features were then converted into a complex-valued number format using a novel random based transformation method. Thus, a novel complex-valued attribute set has been obtained for the HSI classification. The obtained features have been presented as input to the CVWNN algorithm. The hybrid method replaces real valued neural network inside CNN with CVWNN to enhance robustness and generalization of CNN. The experiments have been carried out on three data sets consisted of three popular hyperspectral airborne images. The developed method increases classification accuracy compared to other classification approaches.

关键词： 伸缩缝施工   应用技术   市政道路  

摘要： 当前,我国经济发展速度逐渐加快,市政道路建设工程数量不断增多,伸缩缝施工技术的重要性凸显。为了达到良好的应用目标,市政道路建设团队需要深入研究伸缩缝技术的应用细节,并采取有效处理措施,使其能够贴合市政道路施工需求,达到理想的建设目标,为后续的道路应用打下坚实基础。文章分析伸缩缝施工技术在市政道路工程中的主要作用,阐述其基础类型,并深入研究应用操作流程,以供参考。

关键词： 公路桥梁   伸缩缝   技术剖析  

摘要： 近几年我国经济发展速度非常的快,对施工单位也提出了更高的要求,随着科技的进步,我国的道路桥梁工程在施工中也有了新的技术出现,促进了该行业的发展。伸缩缝施工技术对道路桥梁工程有着非常大的影响。所以在施工中,必须对这项技术足够了解,其会影响工程的健康发展,同时需要具体情况具体分析,提高伸缩缝施工技术的质量,促进整体发展,保障我国公路桥梁工程的安全性和稳定性。

关键词： 伸缩缝施工技术   市政道路   工程质量  

摘要： 如今在建筑工程结构中伸缩缝得到了广泛的使用,通过合理地设置伸缩缝能够显著增强工程建设质量,提升工程建设的安全性。在市政路桥施工的时候,由于桥台结构和公路结构,无论是在施工材料还是相关的施工技术都是有所不同的,比较容易产生各种质量问题,如此会严重影响到整体的工程质量。不过通过使用伸缩缝技术有助于提升市政路桥的稳定性,提高行车的舒适度。在这个时期对于施工人员来说需要合理地使用伸缩缝技术,掌握相关的技术要点,确保能够有效地提升整体的路桥施工水平。

关键词： 空间农业   阳台种植   毛豆  

摘要： 空间农业是指将大量存在的闲置空间充分利用以发展农业,如若实行,将可以大比例增加耕地面积,故不失为“开源”我国耕地以坚守18亿亩耕地红线的实招之一。而阳台作为这些闲置空间之一,如若利用起来,进行蔬菜生产,特别是用来进行大豆生产,将可以有效降低我国大豆的进口需求量。因此,此文推广一种利用阳台种植大豆的技术,为我国日后决定发展空间农业种植大豆,以减少对其进口依赖时在技术方面提供一些参考。

关键词： 装配式建筑   干燥收缩   内隔墙板  

摘要： 装配式建筑为建筑行业带来转型升级的重大机遇,三板体系是装配式建筑行业的重要部品,而作为非承重的内隔墙板以施工速度快、隔音效果好、质轻、表面平整度高、免抹灰等优点迅速在建筑市场推广与应用。混凝土空心内隔墙板的综合成本低,能应用于高层住宅、酒店与宿舍。研究内隔墙板的干燥收缩性能有利于提高建筑物的质量,减少内隔墙板自身产生的裂缝而影响美观与建筑物的使用寿命。研发干燥收缩免反复操作实验装置有利于提高内隔墙板干燥收缩检测效率,从而提升内给墙板抗干燥收缩性能。

关键词： Zinc oxide   II-VI semiconductor materials   Substrates   Heterojunctions   Biosensors   Neurons   Phase locked loops   Biosensor   cell interaction   heterojunction device   neuronal cells  

摘要： In this study, we report the poly-L-lysine (PLL) coated extended large area p-Si/n-ZnO heterojunction based biosensing device to analyze the influence of functional behavior of primary cortical neuronal cells. Wherein, the proliferation of rat embryonic neurons and neural stem cells is highly influenced by the physicochemical and structural properties of the underlying substrate mimicking the extracellular microenvironment. We observed a significant increase in the impedance values while adhesion of the neuronal cells on the substrate;however, it further got significantly decreased with the progression of various cellular functions neurite outgrowth and network formation. Such neuronal processes might have increased the propagation of flow of current by reducing the resistivity of the PLL treated n-ZnO thin film sensing area. Additionally, through the Nyquist plot, we observed a noticeable decrease in the magnitude of impedance values of the fabricated device. Hence, we believe that the fabricated PLL coated extended large area p-Si/n-ZnO heterojunction biosensor can serve as a favourable device to monitor the influence of functional behavior of neuronal cells.