Results 11 to 20 of about 11,003 (181)

What is an online political advert? An interrogation of conceptual challenges in the formation of digital policy response

open access: yesPolicy &Internet, Volume 15, Issue 4, Page 713-730, December 2023., 2023
Abstract Despite British and European policymakers' quest to regulate online political advertising, it is not clear what exactly constitutes an online political advert. As with many areas of digital governance, it is therefore necessary to impose definitional criteria, yet the process of doing so is by no means straightforward.
Katharine Dommett, Junyan Zhu
wiley   +1 more source

Fossil image identification using deep learning ensembles of data augmented multiviews

open access: yesMethods in Ecology and Evolution, Volume 14, Issue 12, Page 3020-3034, December 2023., 2023
Abstract Identification of fossil species is crucial to evolutionary studies. Recent advances from deep learning have shown promising prospects in fossil image identification. However, the quantity and quality of labelled fossil images are often limited due to fossil preservation, conditioned sampling and expensive and inconsistent label annotation by ...
Chengbin Hou   +6 more
wiley   +1 more source

Spatio‐temporal dynamics of human−elephant conflict in a valley of pineapple plantations 菠萝种植园中的人象冲突时空动态

open access: yesIntegrative Conservation, Volume 2, Issue 2, Page 95-107, June 2023., 2023
This is a study of the spatiotemporal patterns of Human−Elephant conflict in a community area adjacent to Kuiburi National Park, southern Thailand. We examined temporal and spatial patterns of elephant crop raiding by assessing the locations of elephant raids in conjunction with environmental factors along with crop characteristics and crop ...
Poldej Kochprapa   +4 more
wiley   +1 more source

A systematic review of animal personality in conservation science

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Although animal personality research may have applied uses, this suggestion has yet to be evaluated by assessing empirical studies examining animal personality and conservation. To address this knowledge gap, we performed a systematic review of the peer‐reviewed literature relating to conservation science and animal personality.
Regan D. MacKinlay, Rachael C. Shaw
wiley   +1 more source

An Improved Multi‐Task Pointwise Network for Segmentation of Building Roofs in Airborne Laser Scanning Point Clouds

open access: yesThe Photogrammetric Record, Volume 37, Issue 179, Page 260-284, September 2022., 2022
Zhang et al. propose an improved multi‐task pointwise network to simultaneously segment instances (that is, individual roof planes) and semantics (that is, groups of roof planes with similar geometric shapes) in point clouds. A new roof data‐set (called RoofNTNU) is established by taking standard airborne laser scanning (ALS) point clouds as training ...
Chaoquan Zhang, Hongchao Fan
wiley   +1 more source

Ignoring non‐English‐language studies may bias ecological meta‐analyses

open access: yesEcology and Evolution, Volume 10, Issue 13, Page 6373-6384, July 2020., 2020
Ignoring non‐English‐language literature may bias outcomes of ecological meta‐analyses, due to systematic differences in effect sizes between studies published in English and non‐English languages. Abstract Meta‐analysis plays a crucial role in syntheses of quantitative evidence in ecology and biodiversity conservation.
Ko Konno   +6 more
wiley   +1 more source

A network approach to prioritize conservation efforts for migratory birds

open access: yesConservation Biology, Volume 34, Issue 2, Page 416-426, April 2020., 2020
Abstract Habitat loss can trigger migration network collapse by isolating migratory bird breeding grounds from nonbreeding grounds. Theoretically, habitat loss can have vastly different impacts depending on the site's importance within the migratory corridor.
Yanjie Xu   +8 more
wiley   +1 more source

基于面向对象和无人机影像的黄土高原丘陵区小流域梯田提取研究

open access: yesShuitu Baochi Xuebao, 2023
精确提取梯田对于水土保持动态监测和评价非常必要,建立黄土高原小流域梯田提取技术流程可为水土流失防治提供技术支持。以甘肃省天水市水土保持科学试验站坚家山小流域为研究区域,采用无人机影像数据,基于尺度参数评估工具以影像的纹理特征为输入层,确定最优分割尺度参数;选用光谱特征和可见光植被指数为分类特征,使用面向对象分类方法对梯田进行提取。结果表明:(1)以局部方差变化率101作为多尺度分割的尺度参数时,梯田边界明显,光谱、纹理和形状特征对于描绘梯田边界具有巨大的潜力;(2)采用可见光植被指数植被颜色指数 ...
张艳超   +3 more
doaj  

Analysis of Flavor Changes of Instant Brown Rice Porridge Rice during Storage based on Gas Chromatography-Ion Mobility Spectrometry [PDF]

open access: yes, 2022
In order to explore the quality changes of instant brown rice porridge rice during storage, gas chromatographic ion mobility spectrometry (GC-IMS) and dynamic principal component analysis (PCA) were used to study the changes of the composition and ...
GUAN Lina   +7 more
core   +1 more source

±1100kV输电线路复合绝缘子缺陷多源特征及模式识别

open access: yesDianci bileiqi, 2022
传统方法在进行±1 100 kV输电线路复合绝缘子缺陷多源特征及模式识别时,去噪效果不佳,无法提取准确的缺陷特征,模式识别用时较长。为此,提出一种新的方法解决以上问题。对输电线路复合绝缘子图像进行均衡化处理,实现图像增强;采用均值滤波方法实现图像去噪,并在二维熵的基础上完成图像分割。提取直线特征、斑点特征和分块统计特征构建复合绝缘子缺陷的特征集,应用BPSO算法融合直线特征、斑点特征与分块统计特征,获得复合绝缘子缺陷特征,构建输电线路复合绝缘子缺陷模式识别模型,实现复合绝缘子缺陷特征及模式的识别 ...
王建, 舒胜文, 金铭, 李勇杰
doaj  

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