Results 11 to 20 of about 3,067 (133)
The Photogrammetric Record, Volume 37, Issue 180, Page 366-384, December 2022., 2022 Abstract Registration of 3D spatial data and models is a fundamental task in applications such as mapping, positioning and virtual/augmented reality. Most of the existing 3D registration methods such as iterative closest point (ICP) and recent learning‐based methods are dedicated to point cloud registration, and rely heavily on point‐wise ...
Yuan Zhao +3 more
wiley +1 more source
Do diverse landscapes provide for effective natural pest control in subtropical rice?
Journal of Applied Ecology, Volume 57, Issue 1, Page 170-180, January 2020., 2020 Our findings question the cost‐effectiveness of current chemical‐based pest management in farming, and highlight opportunities for more ecologically based pest management strategies based on the widespread activity of natural enemies. Pest damage and biocontrol, however, are largely independent from the landscape context, which might be due to the ...
Yi Zou +8 more
wiley +1 more source
Integrative Conservation, Volume 3, Issue 4, Page 312-329, December 2024.Biosphere reserves aim to protect global biodiversity alongside social and economic development. In the Cape Floristic Region, biosphere reserves are an effective conservation approach to protect arthropods against habitat transformation in this biodiverse region.
Michael J. Samways +3 more
wiley +1 more source
Eyes on nature: Embedded vision cameras for terrestrial biodiversity monitoring
Methods in Ecology and Evolution, Volume 15, Issue 12, Page 2262-2275, December 2024.Abstract We need comprehensive information to manage and protect biodiversity in the face of global environmental challenges, and artificial intelligence is required to generate that information from vast amounts of biodiversity data. Currently, vision‐based monitoring methods are heterogenous; they poorly cover spatial and temporal dimensions, overly ...
Kevin F. A. Darras +11 more
wiley +1 more source
基于TMS320F2812矢量变频调速异步电机控制系统设计 [PDF]
, 2012 dSP的应用是继单片机之后,当今嵌入式系统开发中最为热门的关键技术之一,已成为数字化信息时代的核心引擎,广泛应用于家电、通信、航空航天、工业测量、控制及军事等许许多多需要实时实现的领域。该文是以TMS320f2812为核心器件,建立矢量控制系统的模型 ...
徐金阳
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Gaoya dianqi, 2016 模块化多电平换流器（modular multilevel converter,MMC）是电压源换流器直流输电（voltage source converter-high voltage DC,VSC-HVDC）技术领域的一种新型多电平换流器。文中首先介绍了MMC的拓扑结构及功率模块的工作原理;再从功率模块的系统架构、软硬件设计、损耗计算等方面阐述了功率模块的设计方法;在此基础上利用PSIM软件对功率模块的对拖运行进行了建模与仿真。最后通过实验验证了功率模块设计的合理性与可靠性。
封磊 +6 more
doaj
Variable Frequency and Programmable Wave Power Supply Based on DSP [PDF]
, 2011 [中文文摘]介绍了用于电解电容器阳极铝箔腐蚀的、基于DSP控制的超低频变频电源.该电源的输出电流、频率稳定,波形输出可由用户编程设置,按用户的参数控制腐蚀过程.[英文文摘]This paper describes a ultra-low frequency,variable frequency and programmable wave power supply used for anodic corrosion of aluminum foils in electrolytic capacitors ...
卓向东
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Gaoya dianqi, 2017 为提高柔性直流换流阀功率模块绝缘设计的可靠性,实现其优化设计,文中主要针对功率模块绝缘试验的实施方法进行研究,提出了一种柔性直流换流阀功率模块电场仿真分析方法。通过对功率模块的工作原理进行分析,建立了功率模块计算模型。进而根据柔性直流换流阀功率模块绝缘试验及电场仿真计算方法,设定相应的边界条件,采用ElecNet电场仿真软件分析了绝缘试验电压下功率模块内部电场的分布特性,最终得到其内部出现较大场强的位置以及对应的最大场强值。对比绝缘试验结果,验证了该电场仿真分析方法的有效性和正确性 ...
杨晓平, 张艳梅, 赵朝伟
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Guangtongxin yanjiu, 2020 光电收发模块作为光通信系统中的两个核心模块,承载着电信号转化为光信号与光信号转化为电信号的核心功能,其性能对整个通信质量起着决定性作用。文章提出一种改进型的高速率、低功耗和低成本4通道25 Gbit/s光电互连收发模块的封装设计,在传统的以驱动芯片和调制器为基础作为发端和以探测器和跨阻放大器为基础作为收端的同时,增加时钟数据恢复电路,优化封装结构,通过抑制链路抖动和减小阻抗失配引起的反射来提高通道带宽。优化后收发模块的背靠背眼图测试结果显示,在25 Gbit/s速率下,系统的误码率在1E-13以下 ...
李志雄 +6 more
doaj
基于C51与CAN总线的汽车电子控制系统单元设计 [PDF]
, 2007 本文在分析汽车总线技术应用的基础上,介绍了基于CAN总线的汽车电子控制系统单元的设计与实现。给出了控制模块、CAN通信模块的硬件设计及软件分析 ...
陈文芗, 陈玮
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