Results 11 to 20 of about 538,771 (146)

一种新型偏振模色散仿真器的设计与模拟

open access: yesGuangtongxin yanjiu, 2006
偏振模色散仿真器是研究偏振模色散的重要工具。文章提出了一种新型的偏振模色散仿真器,并对该仿真器作了理论分析和仿真。理论分析和仿真结果表明:这种新型的偏振模色散仿真器能够产生可调的差分群延时和实现偏振态的各态遍历。
李新林, 李正斌, 吴德明
doaj   +2 more sources

Bayesian Time‐Series Models in Single Case Experimental Designs: A Tutorial for Trauma Researchers

open access: yesJournal of Traumatic Stress, Volume 33, Issue 6, Page 1144-1153, December 2020., 2020
Abstract Single‐case experimental designs (SCEDs) involve obtaining repeated measures from one or a few participants before, during, and, sometimes, after treatment implementation. Because they are cost‐, time‐, and resource‐efficient and can provide robust causal evidence for more large‐scale research, SCEDs are gaining popularity in trauma treatment ...
Prathiba Natesan Batley   +2 more
wiley   +1 more source

柔直阀控全链路仿真实验优化研究及验证

open access: yesGaoya dianqi, 2023
全链路仿真常用于验证柔性直流换流阀阀控系统全部板卡接入时的功能和性能。文中基于全链路仿真实验结构分析,提出了一种全链路仿真实验的优化方法,在满足阀控动态性能实验要求的基础上,降低了仿真系统的复杂度。分析全链路仿真系统结构,提出仿真实验结构优化方案;对比实际换流阀及全链路仿真试验延时,提出仿真实验延时优化方法;最后,搭建工程实验系统进行验证。实验结果显示,该优化方法具有实验回路复杂度低和链路延时小的优点,可满足阀控功能性测试和动态性能测试的需要。
蒋妮娜   +4 more
doaj  

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

基于集中式与分布式的信息物理融合微电网电压频率二次恢复控制仿真研究 [PDF]

open access: yes全球能源互联网, 2019
随着分布式清洁能源的普及,通信技术在协调各个分布式电源的控制中显得尤为重要。在电力信息传输的过程中,不同的网络状态下表现出不同的通信特性,严重的甚至会发生信息错乱丢包等行为,这对电网的实时控制产生严重影响。为研究信息系统对电力物理系统的实时影响,搭建了电力信息物理融合仿真平台,运用RT-LAB与OPNET两款实时仿真器,通过TCP/IP进行数据交互,对微电网电压、频率的集中式恢复与分布式恢复问题展开研究。仿真结果表明,该平台能有效地反映通信网络对电网控制的影响 ...
张文浩   +4 more
doaj   +1 more source

实时视觉仿真中帧连贯性应用

open access: yes, 2000
本文针对三维图形实时生成中关键的隐藏面消除算法的效率问题,分析了实时视觉仿真中帧连贯性现象,提出了利用帧连贯性改进的深度排序算法。比较了简单排序算法和改进排序算法的性能,并对不同的视点运动算法执行的效果进行了分析。应用改进的深度排序算法在低端平台上实现了实时视觉仿真 ...
张珩, 齐曼
core   +2 more sources

Beyond Photoreceptors: Bio‐Inspired Neuromorphic Vision System Mimicking Drosophila's Downstream Neural Circuitry With 2D β‐Ga2O3 Schottky Diodes

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Bio‐inspired artificial vision systems have made significant progress, but most focus on photo‐receptors, neglecting the hardware implementation of the efficient downstream neural circuits for complex computations like motion detection. To overcome this bottleneck, we demonstrate a neuromorphic vision system that mimics Drosophila's motion ...
Xianyu Hu   +4 more
wiley   +1 more source

人体形态学虚拟仿真实验教学平台的建设与实践

open access: yesZhongguo shiyan zhenduanxue, 2020
虚拟仿真(Virtual Reality)技术是20世纪40年代伴随着计算机发展而形成的实验研究新技术。人体形态学虚拟仿真实验教学平台的建设,主要是借助计算机虚拟仿真软件、多媒体、数据库等多种现代化信息技术手段,建设丰富的实验教学资源,为学生提供更为全面的多学科资源。学生可以利用虚拟仿真实验教学平台,同时进行多学科的交叉学习,融会贯通所需掌握基础知识点。在建设虚拟仿真实验教学平台的实践中对提高教学质量做了探索。
王丹   +6 more
doaj  

Synergistic Modulation of Magnetic and Dielectric Properties via La‐V Co‐Substitution in Barium Hexaferrite for Advanced Millimeter‐Wave Absorption

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The growing deployment of high‐frequency electronic systems has intensified the demand for high‐performance microwave absorption materials. In this work, we developed La‐V co‐substituted barium hexaferrites, Ba1‐xLaxFe11.9V0.1O19 (BLFVO), via a sol‐gel route.
Zhihui Yang   +7 more
wiley   +1 more source

Boosting Piezoelectric Voltage Constant in 3D‐Interconnected PZNNT Porous Piezoceramics via Pore Architecture Engineering

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng   +7 more
wiley   +1 more source

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