Results 31 to 40 of about 2,453 (155)

Incremental yield of exome sequencing over standard prenatal testing in structurally normal fetuses: systematic review and meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 552-559, May 2025.
ABSTRACT Objective To critically review the literature and synthesize evidence on the incremental yield of prenatal exome sequencing (PES) in fetuses with an apparently normal phenotype with a normal G‐banded karyotype or chromosomal microarray (CMA).
A. Sotiriadis   +5 more
wiley   +1 more source

Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure [PDF]

open access: yes, 2005
Article describes the process of fault diagnosis and fault-tolerant control for nonlinear systems with linear output ...
Shen, L., Wang, H., Yue, H.
core   +1 more source

TD algorithm based on double-layer fuzzy partitioning [PDF]

open access: yes, 2013
When dealing with the continuous space problems,the traditional Q-iteration algorithms based on lookup-table or function approximation converge slowly and are diff lt to get a continuous policy.To overcome the above weak-nesses,an on-policy TD algorithm ...
Hong-kun SUN   +4 more
core   +1 more source

Graphic method for detecting special logical function including don't cares(含任意项特殊逻辑函数的图形化检测)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
从K图出发,提出了利用二叉树法对含有任意项的冗余函数、线性函数、对称函数、自反函数及自双反函数等特殊逻辑函数进行检测的图形化方法.实例表明,该图形方法具有简单、直接、方便、可编程的特点.
WANGYong-chao(王勇超)   +1 more
doaj   +1 more source

Propagated error analysis of digital elevation models generated by bi-cubic hermite interpolation methods [PDF]

open access: yes, 2017
2013-2014 > Academic research: refereed > Publication in refereed journalVersion of ...
刘二永, 史文中, 徐青, 王斌
core  

群速度直接控制四阶迎风紧致格式 [PDF]

open access: yes, 2001
为求解多尺度复杂流动在有限网格点的情况下高精度方法是可供选择的方法之一,其中紧致型格式数值解的分辨率更好。用迎风型紧致格式计算激波时,数值解中仍有数值振荡产生,这是由于对应于不同波数之群速度不均一所致。采用群速度直接控制方法重构紧致型格式以提高捕捉激波的能力。该方法简单,精度高,网格基架点少。算例表明 ...
傅德薰, 马延文
core  

Comparison and analysis of basketball players' biomechanical signals with different gaits [PDF]

open access: yes, 2017
通过便携式步态信息采集系统,将篮球运动员直线行走、跑步、运球时的步态信息采集保存至SD卡,后期基于支持向量机(SVM)的模式识别方法对数据离线处; 理。对比分析篮球运动员在不同步态下的生物力学信号特征。实验结果表明: 该方法能够成功分类识别不同步态,验证了该系统的实用性。By means of portable gait information acquisition system,gait; information of basketball players including linear ...
方正   +4 more
core   +1 more source

Wind Turbine Modeling and Control Study based on LPV Model [PDF]

open access: yes, 2015
风能是一种清洁可再生能源,其开发和利用越来越受人们的重视。风力发电机是利用风能发电的设备,近年来,风力发电机逐渐向高效率、高可靠性和大型化发展,使风力发电机的动态模型变得更加复杂。为了使风力发电机平稳可靠运行,提高发电效益,对风力发电机进行建模和控制很有必要。本文针对风力发电机的动态非线性特性,基于LPV模型辨识方法对风力发电机建模,后用辨识所得LPV模型设计MPC控制器,对风力发电机进行变桨距控制。论文的主要工作有: (1)讨论风力发电机的原理模型,分别分析各分块原理模型和一些常用的计算机仿真工具。 (
曹力仁
core  

基于核函数的PCA-KSICA储能系统典型工况在线分析方法 [PDF]

open access: yes全球能源互联网, 2018
考虑储能系统运行过程复杂的内在机制以及实时监控的要求,针对常规动态过程在线监控方法在特征提取和变量识别中的难点问题,结合PCA策略与KSICA方法,对储能系统测量数据进行PCA白化预处理,抵消各通道测量数据间的二阶相关性,建立核函数,提升快速性,有效解决ICA分离算法由于数据量大、迭代次数多引起收敛速度慢的问题。基于核函数的PCA-KSICA储能系统运行工况在线分析方法,不仅可实现复值域独立成分分析,完成时间空间非平稳状况下源信号的在线估计,且可在仅高斯变量情形下保持鲁棒性能,避免产生发散行为 ...
刘舒   +4 more
doaj   +1 more source

Otolith Morphology of Small Yellow Croaker (Larimichthys polyactis)in Yangtze River Estuary and the Application in Biology Study [PDF]

open access: yes, 2016
耳石为硬骨鱼类内耳中的钙化结构,主要起到听觉及平衡鱼类身体的作用。目前耳石形态学已成为国内外鱼类学研究的热点,涉及鱼类年龄与生长、种群划分、群体识别、生活史反演等多个领域。本研究以长江口小黄鱼(Larimichthyspolyactis)为研究对象,研究耳石形态与体长、体质量的关系,探讨耳石生长与小黄鱼特殊生长阶段的关系,且从生物学及耳石形态学角度综合探讨小黄鱼春季群体及秋季群体间的差异,并就耳石形态在两个不同生态群体间的识别作用及年龄鉴定作用进行初步探究,旨在丰富小黄鱼耳石形态学研究 ...
方聪
core  

Home - About - Disclaimer - Privacy