Results 11 to 20 of about 6,969 (114)

Application of normalized Haar spectral transform technique in symmetry detection of logical functions(归一化Haar变换谱技术在逻辑函数对称性检测中的应用)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
基于归一化Haar变换谱技术,讨论了检测逻辑函数对称性的一种新方法.实例表明该方法具有直观、简便和准确的特点.
CHENGJie(程捷)   +1 more
doaj   +2 more sources

Face Detection in Color Images based on Skin Color and AdaBoost Algorithm [PDF]

open access: yes, 2008
人脸检测是确定人脸的位置和大小的图像处理过程。近年来人脸检测一直是计算机视觉和模式识别领域的一个研究热点和难点,其在安全访问控制、视觉监测、基于内容的检索等领域具有广泛的应用价值。本文针对复杂背景下的彩色图像,构建了基于肤色和AdaBoost算法相结合的人脸检测系统,并在自制的人脸图像数据库上进行测试。本文首先介绍了人脸检测技术研究背景和意义,归纳和分析了目前常用的一些人脸检测算法,然后提出了一个新的人脸检测方法。该方法包含三个部分的内容:首先,通过分析和比较肤色在各种色彩空间中的聚类性之后 ...
Arnaboldi, C   +9 more
core   +2 more sources

A method of frequency adaptive detecting for synchronous phase and instantaneous symmetrical components(一种频率自适应的同步相位与对称分量检测方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
电网不对称故障时,快速、准确地检测同步相位和对称分量是电力电子装置实现控制与保护的关键问题之一.分析了负序分量对传统三相锁相环检测性能的影响,设计了 一种频率自适应的同步相位与瞬时对称分量检测新方法.该方法利用瞬时对称分量理论在两相静止坐标系下实现对称分量的实时检测,利用广义二阶积分器实现90°相移,用测得的基波正序电压q轴分量作为锁相环的输入,用锁相环的输出角频率作为相移电路的谐振角频率,达到谐波抑制与频率自适应跟踪,是一个闭环的实时检测系统.分析了该方法的实现机理,给出了检测电路的实现框图 ...
CHENHai-rong(陈海荣)   +2 more
doaj   +1 more source

The algorithm of antisymmetric logical variable detection based on the spectral technique(基于谱系数的反对称变量检测算法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2015
为简化布尔函数6类反对称变量的检测过程,提出了基于谱系数的检测算法.从逻辑变量反对称的定义出发,在分析反对称逻辑变量Rademacher-Walsh (RW)变换谱系数特性的基础上,提出了基于RW变换检测CN(xi | xj)、CE(xi|xj) 、CS(xi | xj) 、CS(xi | xj )、CS(xj|xi)、CS(xj|xi)6类反对称逻辑变量的算法.应用结果表明,该方法具有易操作和计算机编程简单等优点.
LIXiaohua(厉晓华)
doaj   +1 more source

New method of detecting rotation symmetric function based on normalized Haar transform(基于归一化Haar变换检测旋转对称函数的新方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
讨论了旋转对称函数在归一化Haar变换域中的谱特性,提出了基于归一化Haar变换检测旋转对称函数的新方法.该方法具有易于计算机编程操作以及可以同时检测多种其他特殊逻辑函数等优点.
QIUXiao-hua(邱晓华“)   +1 more
doaj   +1 more source

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

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

Information apocalypse or overblown fears—what AI mis‐ and disinformation is all about? Shifting away from technology toward human reactions

open access: yesPolitics &Policy, Volume 52, Issue 4, Page 874-891, August 2024.
Abstract The rise of generative artificial intelligence (AI) has ignited a debate about its effects on the mis‐ and disinformation landscape. The doomsday scenarios of epistemic and information apocalypse presented for many years are recently being questioned, and the previous fears are called “overblown.” These phenomena are analyzed mostly through ...
Mateusz Łabuz, Christopher Nehring
wiley   +1 more source

Conservation and health policy implications linked to the human consumption of sea turtles in northwestern Mexico 墨西哥西北部人类食用海龟一事对动物保护和健康政策的启示 Implicaciones para las políticas de conservación y salud vinculadas al consumo humano de tortugas marinas en el noroeste de México

open access: yesWorld Medical &Health Policy, Volume 16, Issue 1, Page 57-69, March 2024.
Abstract Human consumption of sea turtles remains prevalent throughout Mexico even though laws restricting trade and take of threatened and endangered species have been in place for several decades. The illegal consumption of sea turtles represents a risk to animal conservation, and the pathogens in the meat can adversely affect human health.
A. Alonso Aguirre   +6 more
wiley   +1 more source

磁共振胰腺脂肪定量测定预测糖耐量异常及2型糖尿病

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2021
目的探讨磁共振胰腺的脂肪含量测定预测糖耐量异常(IGT)及2型糖尿病(T2DM)的可行性。方法108名受试者(43男,65女;年龄47.9±12.1岁),包括T2DM(n=27),IGT(n=29)和葡萄糖耐量正常者(NGT;n=53)。NGT组进一步分为<40岁的NGT-年轻组和 ≥40岁的NGT-年长组。所有受试者均进行针对胰岛素抵抗和β细胞功能障碍的标准实验室检测。利用MRI非对称回波三点法水脂分离-定量(IDEAL-IQ)技术测定胰腺脂肪含量。分析胰腺脂肪体积分数(PFVF ...
梁伟强, 彭振鹏, 高进云, 王猛
doaj  

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