Results 21 to 30 of about 9,425 (163)
Functional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
Research on Acceleration Technology for FDTD Based on Vivado HLS [PDF]
, 2017 时域有限差分法(Finitedifferencetimedomainmethod，FDTD)是一种电磁学计算的基本方法，通过空间内电场和磁场的交替计算，得到整个研究空间的电磁分布情况。对于很多电磁学问题，不论从概念上还是可实现性上来讲，时域有限差分方法都是最简单的计算方法。时域有限差分法可以解决复杂的电磁计算问题，但同时要消耗大量的计算机资源，并且花费较长的计算时间。为了更快速高效地得到计算结果，可以利用硬件技术进行加速，这也是近年来FDTD方法研究领域比较受关注的部分 ...
陈瑞
core
Survey of application of machine learning in wireless channel modeling [PDF]
, 2021 Channel characterization is primary to the design of the wireless communication system.The conventional channel characterization method cannot learn the law of certain types of channels by itself, which limits its application in several special scenarios,
Jiachi ZHANG +4 more
core +1 more source
Community Engagement and Ecosystem Services for Mine Rehabilitation 社区参与与生态系统服务在矿区修复规划中的应用
Integrative Conservation, Volume 4, Issue 1, Page 107-112, March 2025.Our study presents a community engagement process informing post‐mining land use in the Philippines through an ecosystem services lens. We conducted a participatory workshop at the Padcal Mine site to assess local perspectives on ecosystem services and mining impacts.
Yuan Pan +4 more
wiley +1 more source
Gaoya dianqi, 2011 局放（PD）源定位通常依赖于局放信号时域波形获取时差,然而,当信噪比（SNR）很低或者PD信号的初始脉冲较小时,难以获得PD信号的起始脉冲时间。笔者摒弃对时域PD信号分析,结合GIS中电磁波的传播模式特性,通过FFT变换将时域波形转换为频域PD信号进而在频域研究,提出一种精确获取时差的新算法。采用时域有限差分法（FDTI）)建立模拟组合绝缘电器并获取PD信号,进行理论PD时差获取及新算法抗干扰性能的分析研究;同时在模拟GIS试验平台上分别采用内置天线和外置天线检测PD信号以获取实测PD时差 ...
幸琳, 姚陈果, 孙才新
doaj
Design of Indoor Base-Station Antennas [PDF]
, 2015 随着无线通信的飞速发展，天线的作用越来越重要，根据应用场景的要求，选择合适的天线类型和结构。当前，无论是基站系统还是移动终端设备，小型化、多功能化、高性能等已成为其基本的技术目标，因此小型化、宽频或多频化、智能化等成为其天线选择和设计的主要内容。对此，微带结构天线是一种较佳的选择，它较易满足此类性能要求。 微带天线的出现将天线的加工成本大大降低，另外微带天线重量轻、体积小可以加工成各种形状，使微带天线在无线通信系统应用中具有优势。微带天线的带宽一般比较窄。怎样提高天线的带宽，同时保持或者降低天线的尺寸 ...
孟阳
core
Digest of Middle East Studies, Volume 33, Issue 4, Page 361-384, Fall 2024.Abstract This study joins recent studies that explore the meanings of the political representation of women resulting from a gender quota, through examination of their media representation. Drawing on studies on gendered mediation and women's political representation and using a content analysis method, we examine the quantity and the quality of gender
Bosmat Yefet, Chen Friedberg
wiley +1 more source
Study of Signal Integrity in High Speed Circuit Design [PDF]
, 2010 随着现代电子技术的不断发展，高速电路的应用范围日益扩大，系统工作速率也在迅速提高。对于传输速率达几百Mbps甚至数Gbps的高速数字信号，其有效频谱已扩展至微波波段，在复杂互连系统中传输时已表现出明显的波特性。这时互连结构的不连续及它们之间的耦合将会引起信号的延迟、反射、衰减、串扰等信号完整性问题。使得理论上可行的系统设计在实际应用中往往无法达到预期性能，甚至不能正常工作。随着系统复杂度的上升，电路板的布局布线密度也随之提高，信号完整性问题更为凸显，在国内外已受到广泛的重视，并成为一个研究热点 ...
朱文龙
core
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Protected areas (PAs) are pivotal to biodiversity conservation, yet their efficacy is compromised by insufficient funding and management. So‐called other effective area‐based conservation measures (OECMs) present a paradigm shift and address PA limitations.
Xing Chen +6 more
wiley +1 more source
Research of the Multi-Object in Eddy Current Testing Simulation [PDF]
, 2012 传统涡流仿真模型仅包含单一求解区域,将所有物体囊括在内。随着近代工业科技的飞速发展,被检物体日趋复杂,从而使得传统涡流仿真模型的计算效率降低。将单一求解区域划分为数个子区域,可以有效克服网格模型复杂的问题。简要介绍分解区域在电磁及涡流检测中的应用。Tradition eddy current testing models have only one solution domain,including all objects.With the high speed develop of ...
何荣光, 孙磊, 李岩松
core