Results 11 to 20 of about 10,394 (164)
Wildlife Letters, Volume 1, Issue 3, Page 119-130, September 2023., 2023 We collected Amur tiger track data and occurrence data through snow track tracking, sample line surveys, and camera traps. The study concluded that forest roads, scrub vegetation, and human landscape factors were the main factors influencing Amur tiger movements at fine scales and examined the negative correlation between tiger path curvature values ...
Ying Wang +9 more
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Policy Studies Journal, EarlyView.ABSTRACT Why did Australia go from the White Australia Policy, which excluded non‐whites, to institutionalizing multiculturalism policy in the 1970s? This question defies traditional political ideologies of the major political parties, which had long supported the White Australia Policy. This article is a rare empirical demonstration of the Five‐Thread
Julius C. S. Mok
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Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
Food and Energy Security, Volume 15, Issue 2, March/April 2026.ABSTRACT Net photosynthetic rate (Pn) serves as a key indicator for evaluating plant growth and yield. In order to explore an effective method for monitoring winter rapeseed Pn using unmanned aerial vehicle (UAV) multispectral technology, the winter rapeseed was taken as the research object and the multispectral images were obtained through UAVs in ...
ChengYang Ni +7 more
wiley +1 more source
Gaoya dianqi, 2020 变压器是电网最为核心的设备,绕组变形是变压器主要的故障类型之一,频率响应分析法（frequency response analysis, FRA）是目前广泛应用的绕组变形检测方法。为提高绕组变形分类诊断的性能,文中提出基于粒子群算法优化支持向量机（particle swarm optimization-support vector machine, PSO-SVM）的变压器绕组变形分类方法,采用数学统计方法提取频率响应曲线的特征参量,并输入到支持向量机模型进行训练,利用粒子群算法优化支持向量机模型参数 ...
刘伟 +4 more
doaj
Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source
The research of Algorithm and Parameters of SVM [PDF]
, 2016 随着支持向量机的研究日趋完善，以及支持向量机的优越的建模能力，并且在克服“维数灾难”以及“过学习”方面较其他模型表现更良好，越来越多的学者对支持向量机进行了研究，并成功地将支持向量机运用到很多的领域.支持向量机的算法和参数的选取一直以来都是很热门的研究方向.本文对支持向量的选取以及核函数参数和惩罚参数进行了研究. 在理论方面，本文从最优化的角度，给出了支持向量机的对偶问题的推导过程，并给出了对偶问题的优化性质的证明.
万海华
core
Adaptability of Governance Structures and Processes for Sustainable Livestock in Jalisco, Mexico
Review of Policy Research, Volume 43, Issue 2, March 2026.ABSTRACT Global increases in meat production have intensified interest in alternative livestock systems that can address environmental, social, and economic challenges. Transitioning toward sustainable livestock (SL) systems requires adaptive governance arrangements that integrate local knowledge into broader policy design.
Jovanka Špirić
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Research on Semisupervised Classification for Hyperspectral Image Based on Spectral-Spatial Feature [PDF]
, 2015 高光谱遥感图像分类是图像研究领域的新热点问题，具有广泛的应用前景。随着近年来关注度的持续上升和研究投入的不断增加，已经取得一定的技术成果。然而，由于高光谱遥感图像本身的特殊性，使得其分类技术存在着维度高而训练集小、信息冗余、混合像素多等问题。针对这些问题，本文开展了基于谱域-空间特征的半监督高光谱图像分类方法研究，主要研究工作及创新点如下： 1.为了充分利用目标像素点的空间信息，提出将谱域和空间信息相结合的特征。目标像素点的空间信息包括：空间邻域像素点光谱信息和目标像素点自身空间位置信息 ...
尤雅萍
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao +9 more
wiley +1 more source