Results 21 to 30 of about 21,035 (138)
Rare Metals, EarlyView.ABSTRACT The development of high‐efficiency, stable, and scalable perovskite solar cells/perovskite solar modules (PSCs/PSMs) highly depends on the performance and cost‐effectiveness of functional layers such as electron transport layers (ETLs) and hole transport layers (HTLs).
Baochang Wang +11 more
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Seismic damage assessment of highway bridge in Xiamen area [PDF]
, 2013 本文主要介绍了四种基于经验统计法的桥梁震害预测方法,包括久保庆三郎方法、日本土木工程学会方法、朱美珍方法、I.g.buCklE方法,并将这些方法应用于厦门地区在役公路桥梁震害预测。The paper mainly describes the bridge seismic damage assessment method based on empirical statistical methods,including Keizaburo KUBO,the Japan Society of Civil ...
曾显通, 黄起益
core
, 2014 锚杆抗滑桩加固边坡具有良好的抗震性能, 目前这方面的研究资料还不多。结合大理西站边坡工程, 应用拟静力法、时程分析法以及新近提出的有限元强度折减动力分析法对锚杆抗滑桩加固边坡进行动力稳定性分析。本文描述不同方法的计算特点和计算过程, 比较不同的计算方法的异同点, 分析锚杆抗滑桩的抗震性能与边坡的动力稳定性, 以确保工程安全。研究成果可供类似工程设计参考。The seismic performance of anchor anti-slide pile is strong, however ...
劉云 +4 more
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Rare Metals, EarlyView.ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan +9 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
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Methods in Ecology and Evolution, EarlyView.Abstract DNA barcode‐based species identification has become pivotal in biodiversity research. Current barcoding‐based deep learning methods have advantages in species identification but exhibit significant limitations. By using COI barcoding alone, previous studies were unable to fully capture species identification features. Prior methods showed that
Bin Ye +4 more
wiley +1 more source
Dianci bileiqi, 2020 针对现有雷电感应过电压数值计算模型工程适用性不强的问题,分析了雷电感应过电压产生的物理过程,基于时变电磁场理论提出了架空线路雷电回击入射场与感应场的电磁耦合关系,推导得出了架空线路雷电感应过电压时域波形的解析计算模型。计算分析了雷电流幅值、回击速度、雷电流波形对架空配电线路感应雷过电压时域波形的影响规律,结果表明:随着回击放电速度的增加,相同条件下感应过电压幅值有所降低且波头时间增加,当回击电流波前时间增加时,感应过电压幅值也显著降低 ...
汪进锋 +6 more
doaj
Mobile data visual analysis for human activity understanding(面向用户行为理解的移动通讯数据可视分析)
Zhejiang Daxue xuebao. Lixue ban, 2018 通信数据包含人类活动的时空以及社会关系等信息，对人类行为分析有重要的价值.为了帮助分析者对用户的行为进行分析和理解，构建了从通信数据中探索用户的时空、社交等信息以分析用户行为的可视化流程，旨在理解用户的行为模式并通过行为的对比发现用户的社会角色以及用户之间的真实社交关系，通过迭代式交互过程，对用户不同时段的行为进行有效的理解和分析.在此基础上，构建了用户行为可视分析系统，采用半年的通信数据对该方法以及系统进行评估，结果显示，本方法能够有效理解个人行为、识别用户之间的关系.
JIANGHongyu(蒋宏宇) +3 more
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Conservation Biology, EarlyView.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2016 广义多项时间分数阶扩散方程已被用于描述一些重要的物理现象，目前，有关该类方程在高维情形下满足混合边界条件的研究仍较少.利用分离变量法考虑有界区域上广义二维多项时间分数阶扩散方程，方程中关于时间变量的分数阶导数采用Caputo分数阶导数的定义，其阶分别定义在[0，1]，[1，2].而关于空间变量的偏导数则定义为传统的整数阶导数（二阶），得到了有界区域上广义二维多项时间分数阶扩散方程满足非齐次混合边界条件的解析解.亦可用于求解其他类型的满足不同边界条件的分数阶微分方程的解析解.
WANGXuebin(王学彬)
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