Results 61 to 70 of about 27,443 (153)
ABSTRACT Improving the efficiency and stability of oxygen evolution electrocatalysts remains essential for advancing water splitting technologies. Although in situ surface reconstruction into active phases is desirable, it often leads to uncontrolled structural degradation.
Beirong Ye +11 more
wiley +1 more source
提出了用遗传算法优化的神经网络和PSO算法优化的神经网络图像复原算法,并对它们的复原效果进行了比较.先用优化算法对神经网络的结构进行优化,然后利用优化后的神经网络的学习和泛化能力,用一组样本图像对网络进行训练,建立退化图像与原图像之间的非线性映射关系,最后用训练好的进化神经网络对待复原的退化图像进行图像复原.实验结果表明复原的图像无论在主观视觉还是定量分析上都取得了很好的效果.
李伟, 王正勇, 余艳梅
doaj
ABSTRACT Lithium‐rich manganese‐based cathodes (LRM) deliver high discharge capacities beyond 250 mAh g−1, but their practical deployment is restricted by irreversible oxygen redox, structural reconstruction, sluggish kinetics and unstable cathode‐electrolyte interfaces (CEI). Here, we develop a colloid‐assisted anchoring‐diffusion engineering strategy
Jia‐Nan Hao +13 more
wiley +1 more source
基于超结构的多杂质用水网络优化模型具有维数高、非线性和非凸性等特点,是目前节水技术研究的难点之一,数学优化算法是解决这一问题的主要工具。介绍了数学优化算法中的经典数学规划法、智能算法和智能混合算法解决多杂质水网络优化问题的研究进展。智能混合算法通用性高,较其他算法具有更强的全局和局部寻优能力,更适用于多杂质水网络的优化。开发智能混合算法,综合考虑换热网络和着眼企业现场条件是今后水网络优化研究的重点。
周枫, 徐宏勇, 蔡兰坤
doaj +2 more sources
ABSTRACT Developing rapid, precise gas sensors for Listeria monocytogenes (LM) biomarker detection faces challenges due to suboptimal gas‐solid interactions. Herein, we report the rational synthesis of amino‐functionalized mesoporous SiO2 hollow nano‐doughnuts (MS‐2‐NH2‐2) via modification with (3‐aminopropyl) trimethoxysilane (AAPTMS), which enables ...
Xingyu Wang +7 more
wiley +1 more source
Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan +6 more
wiley +1 more source
为了满足高压直流断路器不断提高的需求,需要对电磁斥力机构持续优化研究。阐述了电磁斥力机构的工作原理及发展趋势,对目前提高机构驱动效率的优化方法进行了梳理总结,分析了不同优化方法的优势和不足;详细介绍了传动系统冲击应力的优化研究进展;总结了目前缓冲性能优化规律;对于长行程驱动,研究表明复合式结构具有更好前景。根据目前的优化研究现状,提出了有待解决的关键问题并指出未来可能的研究重点在激励回路的优化上。
孙瑞, 淡淑恒
doaj
针对变电站接地网腐蚀故障的精准定位与诊断问题,将果蝇优化算法运算速度快、全局收敛效果好的优点与电阻腐蚀倍数优化相结合,提出基于多层降维与果蝇优化的接地网腐蚀故障诊断方法。该方法以电压法与电阻法作为诊断机理,以果蝇优化算法作最优解全局搜索,结合多层降维解决接地网支路个数多的问题,降低优化复杂度,提高优化速度。以60条支路、36个节点的变电站接地网为例进行方法检验对比,结果表明,以果蝇优化算法为基础的电压法和电阻法均能取得较好的腐蚀故障诊断效果,电阻法的平均诊断误差略低于电压法,诊断效果较好,但时间代价更大。
陈海燕
doaj
ABSTRACT Balancing low iridium dosage and robust anodic stability remains a critical hurdle for practical proton exchange membrane water electrolysis (PEMWE). Although IrRuOx offers a cost‐effective alternative, current systems still suffer from the dual dilemma of excessive noble‐metal reliance and inadequate long‐term durability. Herein, we developed
Hang‐Xing Ren +10 more
wiley +1 more source
微电网的研究及发展归根结底是为了应对目前能源、资源紧张,环境污染等一系列问题,因此微电网不仅要满足基本供电需求,还应提高其经济性与环保性。文中主要通过建立分布式电源模型及多目标优化模型对微电网内的分布式电源进行优化调度,根据对微电网的具体要求运用遗传算法进行优化计算,进行最优化配置。算例结果通过24 h内不同优化的结果进行对比,得到最优配置,验证了模型在微电网多目标优化方面的有效性,从而达到对微电网整体性最优化。
赵磊, 曾芬钰, 王霜, 杨宝泉
doaj

