Results 41 to 50 of about 10,420 (169)
An Advanced Fuzzy Control Strategy for Hybrid Energy Storage Systems Considering Smoothing of Wind Power Fluctuations at Future Moments [PDF]
ObjectivesThe existing hybrid energy storage system control strategy finds it difficult to maintain the state of charge (SOC) within a reasonable range while also meeting the advanced charging and discharging needs due to future wind power fluctuations ...
FAN Wei, LI Ji, YUAN Zhi, ZHOU Dan
core +1 more source
Modal Parameter Identification of Low Frequency Oscillation in Power System Based on Ambient Data [PDF]
, 2022 Low frequency oscillation is one of the key problem affecting the safe and stable operation of interconnected power system, variational modal decomposition (VMD) was used to extract low-frequency oscillation signals from ambient data, and a method of low-
GAO Yanfeng, HWANG Jin Kwon, YAN Hongyan
core +1 more source
Conservation Biology, Volume 39, Issue 2, April 2025.Abstract Emerging infectious diseases are increasingly recognized as a significant threat to global biodiversity conservation. Elucidating the relationship between pathogens and the host microbiome could lead to novel approaches for mitigating disease impacts.
Alexander S. Romer +25 more
wiley +1 more source
Mid-spatial Frequency Error Identification of Precision Optical Surface Based on Empirical Mode Decomposition [PDF]
, 2013 对于高端光学元件,除限制低频面形误差和高频表面粗糙度之外,需要严格控制中频误差,以确保其使用性能。目前国际上广泛采用功率谱密度(POWEr SPECTrAl dEnSITy,PSd)曲线评价中频误差,该方法以fOurIEr变换为基础,在全局水平上给出中频误差的综合评价。但是,光学元件磨削与抛光工艺过程中,局部波动和变周期波动是常见的中频误差存在形式。为更加准确地评价中频误差,指导补偿加工,需要识别中频误差频率及位置信息。鉴于此,从光学表面属于非平稳空间信号的角度出发 ...
杨峰, 毕果, 郭隐彪
core
Application of integrated model based on EEMD-CNN-LSTM for landslide-displacement prediction [PDF]
Objective Landslide-displacement prediction is critical when evaluating landslide stability. Despite the achievements of time-series methods based on deep-learning paradigms in predicting landslide displacement, the nonstationary, periodic, and trending
CHEN Weitao +4 more
core +1 more source
Chaotic hiding and its positive definite blind extraction algorithm of speech signal [PDF]
, 2016 The wavelet transform was used to extract energy accumulation zone of speech signal hidden in the chaotic carrier signal for transmission,and a blind extraction algorithm was designed to achieve speech signal extraction under different chaotic dynamical ...
Er-fu WANG +3 more
core +1 more source
Review of Policy Research, Volume 42, Issue 2, Page 393-422, March 2025.Abstract Resolving policy potential disparities and coordinating among multiple stakeholders are essential components of effective policy implementation. Nevertheless, there has been limited scholarly attention to the causes and remedies for grassroots implementation challenges, particularly through the lens of new collective action theory and the ...
Chen Ran +3 more
wiley +1 more source
A Novel Distributed Photovoltaic Output Interval Prediction Method [PDF]
ObjectivesDistributed photovoltaic power prediction is of great significance for the operation and scheduling of photovoltaic power plants. Point prediction methods are difficult to comprehensively describe the uncertainty of distributed photovoltaic ...
CHEN Jin +7 more
core +1 more source
Dianci bileiqi, 2021 针对雷击输电系统发生雷击干扰和雷击故障时无法快速、准确的识别雷击类型,做出有针对性的防雷措施,提出一种综合的雷击类型识别方法。首先,根据雷击暂态电压信号波形的单调性和对称性构造积分判据的方法来识别非故障和故障性雷击;然后,结合暂态电压信号能量特征值的分布特点构造高低频能量比值判据,识别非雷击,雷击和短路故障;针对希尔伯特一黄变换（Hilbert-Huang Transform,HHT）中经验模态分解（Empirical Mode Decomposition,EMD）对原始信号分层时存在的边际效应 ...
宋晓星 +3 more
doaj
Translating policy harmonization into practice—The case of the EU Blue Card Directive
European Policy Analysis, Volume 11, Issue 1, Page 94-113, Winter 2025.Abstract This study introduces a translation perspective to analyze the policy harmonization process, highlighting imitation, brokering, and editing in shaping policy dynamics at EU and national levels. The translation perspective emphasizes that while policy development is ongoing, the protracted process signals a shift in EU‐wide coordination of ...
Almina Bešić +2 more
wiley +1 more source