Results 41 to 50 of about 9,705 (168)

Are Galliformes of the High Himalayas Well Protected? Identifying Conservation Priority Areas Using an Assemblage‐Level Approach 高喜马拉雅地区的鸡形目鸟类是否得到了有效保护?利用群落水平方法确定优先保护区域

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.
This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma   +5 more
wiley   +1 more source

Design and Implementation of Attendance Management System Based on Face Recognition [PDF]

open access: yes, 2015
近年来,随着我国经济的快速发展,许许多多的中小企业、事业单位涌现出来。随着这些企业以及事业单位人数的增长,考勤成了公司人事管理的一个重要组成部分。现已普及的基于磁卡技术的考勤机以及基于指纹的考勤机已远远不能满足要求。磁卡技术容易造成代刷,而基于指纹的识别技术则易受干扰、并且考勤人数也有一定的限制。这些不利因素会给公司考勤带来巨大影响。近些年来,随着人脸识别技术的成熟,开始将人脸识别技术应用到考勤当中去。 本系统设计并实现了基于人脸信息识别考勤系统,人脸识别考勤系统能很好地解决考勤代刷以及其他镭射卡的问题。
苏秀梅
core  

基于距离的放电模式识别方法

open access: yesGaoya dianqi, 1997
阐述了用局部放电数字化—计算机测量装置检测放电信号,由放电统计特性来判断设备状态的意义。指出采用模式识别方法提高了放电识别的有效性。介绍了三种基于距离的模式识别方法:置信区间法、最小距离法、趋中心度法,分析了这三种方法的原理、算法和样本构成。最后对这三种用于识别放电的模式识别方法作了比较、归纳。
谈克雄, 李福祺
doaj  

Hybrid Crisis Governance: A Systematic Review of Control‐Based and Collaborative Governance of the COVID‐19 Pandemic

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 17, Issue 1, March 2026.
ABSTRACT Hybrid crisis governance – combining hierarchical control with networked collaboration – has gained increasing attention in the public policy and crisis management literatures. Yet, the concept of hybridity remains crude and underdefined, limiting its analytical utility.
Svante Aasbjerg Thygesen   +2 more
wiley   +1 more source

Kinases Mst1 and Mst2 positively regulate phagocytic bactericidal activity [PDF]

open access: yes, 2015
致病菌引发的恶性化脓和不可控感染一直是临床治疗的一项棘手难题。当细菌侵入后,天然防御细胞如巨噬细胞、嗜中性粒细胞等立即响应,识别并吞噬致病菌的同时调动胞内线粒体和NADPH氧化酶向吞噬泡内释放大量的活性氧(ROS),进而实现杀伤和清除细菌的功能。当这类细胞不能充分发挥杀伤和清除病原体的功能时,即使入侵的细菌数量较少或是致病力不强,也可能诱发机体破损部位或组织器官产生脓肿溃烂、炎症因子风暴和组织坏死,最终导致败血症或致死性脓毒性休克 ...
耿晶
core  

Disaster Cross‐Sector Collaboration Networks: Evidence from Four Historical Disasters

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 17, Issue 1, March 2026.
ABSTRACT By conducting content analysis and social network analysis of media coverage of four historical disasters (i.e., the 2011 Joplin Tornado, 2013 Moore Tornado, 2017 Hurricane Harvey, and the 2023 Maui wildfire), this study uncovered characteristics of cross‐sector disaster collaboration networks.
Xiaochen Angela Zhang, Jonathan Borden
wiley   +1 more source

Components Analysis and Classification of Beer and White Spirit Based on NMR Approach [PDF]

open access: yes, 2016
食品是人类生活中一类重要的必需品,各种食品具有不同的特性和成分,直接关系人体的健康。近年来,我国食品安全问题受到社会公众群体的广泛关注。核磁共振(NMR)技术相比于其他传统的检测方法,具有对样品的制备要求低、预处理简单,无损检测和高灵敏度等特点,在食品科学研究中得到广泛应用。 酒精类饮料属液态食品,啤酒更是继水、茶之后世界第三大饮用品,白酒则是中国特有酒种。目前基于NMR技术对啤酒的研究多停留在定性分析,化学成分的描述一般只针对某类化合物,对总体化学成分的全面研究较少。而基于NMR的白酒研究集中在国内 ...
栾晓菲
core  

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty   +5 more
wiley   +1 more source

Mindin is up-regulated during colitis and enhances inflammation by activating the transcription activity of NF-κB protein family [PDF]

open access: yes, 2015
炎症性肠病(IBD)的发生,被认为是遗传、环境和黏膜免疫三方面因素共同作用的结果,而肠黏膜异常的免疫应答又是发病的关键因素之一。在炎症局部,炎性细胞的招募和激活依赖各种细胞膜受体及整合素与细胞基质(ECM)间的相互作用。细胞外基质蛋白Mindin是Mindin/F-spondin家族成员,在小鼠炎症模型中,有多项研究表明Mindin在免疫应答过程中扮演重要角色,但对于其在炎症中的功能和调控机制研究较少。故本课题拟探索肠炎中Mindin的表达水平及其在炎症中的信号调控机制。 本课题研究中 ...
李萍
core  

改进SVR及其在传感阵列模式识别中的应用

open access: yesGaoya dianqi, 2011
针对传统神经网络模式识别中存在网络结构难于确定、过学习、收敛速度慢、易陷入局部极小值等不足及标准支持向量回归机中未考虑各样本重要性的差异问题,结合变压器油中多组分气体监测传感器阵列,将改进型支持向量回归机应用于气体传感器阵列信号模式识别中。实验结果表明,改进后的模式识别方法在预测精度和泛化能力上都较传统神经网络和标准支持向量回归模式识别方法有明显提高,有效地解决了多组分气体监测传感器的交叉敏感问题。
陈伟根, 彭姝迪, 王有元, 郝迈
doaj  

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