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In this study, a new video super-resolution (SR) reconstruction approach using a mobile search strategy and adaptive patch size is proposed. Based on the modified nonlocal-means (NLM) SR algorithm, a mobile search strategy for motion estimation and adaptive patch size are proposed to reduce the computational complexity of the proposed approach and improve the visual quality of the final video SR reconstruction results, respectively. Based on the experimental results obtained in this study, the performance (visual quality and PSNR values) of the proposed approach is better than those of three comparison approaches. 相似文献
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Co3Mo3C, Co6Mo6C and MCM41-supported Co3Mo3C catalyst are prepared by a simple one-step thermal decomposition method without the conventional temperature-programmed carburization. The resultant carbides are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscope (HRTEM) and BET surface area measurements. The as-prepared Co3Mo3C/MCM41 catalyst exhibits good performance in both probe reactions of hydrodesulfurization (HDS) and hydrodenitrogenation (HDN), which proves the one-step decomposition method to be an effective route for the preparation of bimetallic carbide catalyst. 相似文献
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某公路大桥由于预应力损失变大以及长期超载等原因,主桥中跨跨中出现了约22cm的明显下挠,箱梁内侧腹板出现了大量的斜剪裂缝.利用空间实体有限元模型对该桥加固施工过程中进行仿真模拟,弥补梁单元分析模型中空间效应计算方面的不足,并通过对被加固桥梁进行实时、连续的施工监控,消除温度、振动附加应力影响,从而为加固施工提供更为可靠、真实的监控值和实测数据,从中探索施工监测的新方法. 相似文献
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Qian Sun Ming-Hui Shang Zhi Fang Yapeng Zheng Xinmei Hou Weiyou Yang 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(25):2207755
The layered quasi-2D perovskites are recognized as one of the effective strategies to resolve the big problem of intrinsic phase instability of the perovskites. However, in such configurations, their performance is fundamentally limited due to the correspondingly weakened out-of-plane charge mobility. Herein, the π-conjugated p-phenylenediamine (PPDA) is introduced as organic ligand ions for rationally designing lead-free and tin-based 2D perovskites with the aid of theoretical computation. It is evidenced that both out-of-plane charge transport capacity and stability can be significantly enhanced within as-established quasi-2D Dion-Jacobson (DJ) (PPDA)Csn-1SnnI3n+1 perovskites. The obviously increased electrical conductivity and reduced carrier effective masses are attributed to the enhanced interlayer interactions, limited structural distortions of diamine cations, as well as improved orbital coupling between Sn2+ and I− ions of (PPDA)Csn-1SnnI3n+1 perovskites. Accordingly, by dimension engineering of the inorganic layer (n), the bandgap (Eg) of quasi-2D perovskites can be linearly tailored toward the suitable Eg (1.387 eV) with optimal photoelectric conversion efficiency (PCE) of 18.52%, representing their great potential toward promising applications in advanced solar cells. 相似文献
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Min Ouyang Qi Fei Ming-Hui Yu Gao-Xia Wang En-Jie Luan 《Simulation Modelling Practice and Theory》2009,17(2):390-397
Many systems in our life contain redundant systems. If one system collapses, its redundant system will substitute it to work for a period of time. In our paper, we have specifically studied the effects of redundant systems on controlling the disaster spreading in networks. Based on the network structure, several redundant strategies have been formulated. On the one hand, the effects of the redundant systems designed uniformly have been studied in different types of networks, the result shows that the random network has been improved the best to fight the disaster. On the other hand, the effectiveness of those redundant strategies have been discussed in the scale free network, results show that the strategy based on total degree is the most effective one to control the spreading. All results found in this paper offer promising perspectives to design redundant systems for preventing cascading failures. 相似文献