Results 61 to 70 of about 17,163 (168)
Dual-target WOA spectrum sharing algorithm based on Stackelberg game [PDF]
, 2020 In order to solve the complex spectrum allocation problem,a dual-target whale optimization algorithm (WOA) with strong parallel computing capabilities was introduced,and a Stackelberg game model was proposed that could effectively reflect the actual ...
Li ZHANG, Tian LIAO, Yejun HE
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World Water Policy, Volume 11, Issue 4, Page 939-952, November 2025.ABSTRACT This study reviews the status of access to water supply, sanitation, and solid waste management (SWM) services in Uganda, examining the influence of national government policies, institutional frameworks, and financing mechanisms. It employs a mixed‐methods approach, combining qualitative analysis of primary data from key informant interviews ...
Ronald Sakaya +3 more
wiley +1 more source
Functional Ecology, Volume 39, Issue 11, Page 3255-3268, November 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract The biotic resistance hypothesis (BRH) of Elton posits that diverse communities are more resistant to biological invasions. While the effects of climatic stresses and human disturbances on community invasibility have been extensively studied individually, their combined
Kai Shi, Misbah Naz, Chi Zhang, Hua Shao
wiley +1 more source
He jishu针对核电站松动部件监测系统因噪声导致误报警概率较高的问题，提出了一种基于信号谱熵的报警方法。该方法通过调整松动部件冲击信号能量谱不同频段的权重，对传统谱熵法进行了改进。通过对权重系数进行参数分析，确定了识别松动部件冲击振动信号的最优权重系数。借助钢球试验，研究了背景噪声、脉冲信号等干扰因素对该方法报警准确性的影响。试验结果表明，改进后的谱熵法在信噪比为-5 dB的情况下，仍能显著反映松动部件冲击信号引起的谱熵曲线波动，有效排除松动部件信号典型频段外的噪声与脉冲信号干扰 ...
骈 超 +4 more
doaj +1 more source
水资源对城市化的约束力已经成为干旱缺水地区决定城市化发展速度,进而决定城市化和社会经济发展规模的重要外营力之一,科学度量并探讨其时空变化,对水资源可持续利用与城市化正常推进具有重要意义。以定性与定量分析相结合的方法建立了水资源对城市化约束强度的综合测度指标体系,采用熵技术支持下的层次分析法构建出水资源对城市化约束强度的综合测度模型,并对1985-2005年河西走廊水资源对城市化约束强度的时空变化进行了分析。结果表明,河西走廊水资源对城市化的约束强度在空间上总体表现为自东向西逐渐减小 ...
方创琳, 鲍超
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Improved variable step-size LMS algorithm based on hyperbolic tangent function [PDF]
, 2020 In order to improve that the LMS algorithm for determining step size cannot satisfy both rapid convergence and low steady-state misalignment errors,a variable step size algorithm (IVSSLMS) based on an improved hyperbolic tangent function was proposed.The
Hao YU, Jianwu ZHANG, Qianhua ZHANG
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Infant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 5, Page 489-505, September 2025.Abstract Parental reflective functioning (PRF), a critical construct in the field of infant mental health, has been under investigated in non‐WEIRD countries, where the majority of the world's infants are born. Studies from WEIRD contexts have demonstrated a relationship between socio‐demographic and parental reflective functioning scores.
Nicola Dawson +2 more
wiley +1 more source
PEMFC Improved Fractional-order Subspace Identification Model Based on IECSDE Algorithm [PDF]
To accurately describe the characteristics of a Proton Exchange Membrane Fuel Cell (PEMFC) during its power-generation process and the relationship among variable effects, an improved fractional-order subspace identification method based on the ...
QIN Hao, QI Zhidong, YU Lingzhi, TONG Xin
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Policy &Internet, Volume 17, Issue 3, September 2025.ABSTRACT Digital sovereignty and its cognate concepts have become staples of the digital governance debate; however, in the search for a shared understanding of the concept, the proliferation of claims to digital sovereignty by multiple different actors remains a contested issue.
Eric Repetto
wiley +1 more source
Non-uniform Norm Constraint Estimation Algorithm for Underwater Acoustic Channels at the Presence of Varying Sparsity [PDF]
, 2014 对于具有典型时频双重扩展特性的水声信道,利用其稀疏分布特性在估计算法中引入范数约束可提高信道估计性能。但当水声信道多径稀疏度变化时,经典的l0或l1范数约束由于缺乏对不同稀疏模式的适应性,将导致性能下降。通过引入非均匀范数约束自适应算法并对其进行收敛性分析,针对水声信道稀疏度变化利用该算法通过非均匀范数的形式提高适应性。不同接收深度水声信道的仿真及海上实验结果表明,该算法相对经典的l0或l1范数约束算法有较明显的性能改善。For the typical underwater acoustic ...
伍飞云, 周跃海, 方世良, 童峰
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