Results 31 to 40 of about 229,955 (165)
源荷储多类型灵活性资源协调的高比例可再生能源电源规划 [PDF]
未来高比例可再生能源电力系统愿景下,具有波动性和不确定性的风/光等可再生能源作为主要能源供应者,给电力系统带来了巨大的灵活性需求,考虑单一类型灵活性资源提供调节能力的规划模型和以净负荷包络线为基础的电源规划方法将不再适用。引入灵活性指标量化评估源荷储多类型灵活性资源的调节潜力并作为优化决策变量纳入到规划模型中,从而建立以全周期投资成本最小化为目标的高比例可再生能源电源规划模型。通过电源投资决策、生产模拟和灵活性评估3个流程模块,实现单位投资改善灵活性指标最优的电源规划方案求解。最后 ...
徐唐海, 鲁宗相, 乔颖, 安军
doaj +1 more source
针对“太极计划”中由卫星抖动引起的影响激光干涉测量精度的两个主要噪声:激光指向抖动噪声、光程倾斜(tilt-to-length, TTL)耦合噪声,仿真分析了这两个噪声的抑制水平。采用差分波前传感技术,结合激光指向抖动噪声抑制系统的物理图像,求解了系统中各功能模块的传递函数,构造了抑制激光指向抖动噪声的Simulink仿真系统;针对TTL中常用的凹凸透镜组合技术手段,首次设计了由双凸透镜组成的4?成像系统,并采用MATLAB程序计算分析了TTL耦合噪声水平。仿真结果表明,激光指向抖动噪声 ...
李玉琼, 蔡榕, 王璐钰
core
ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng +7 more
wiley +1 more source
ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
为解决现有的变压器振动噪声仿真方法存在计算量过大、难以求解、对工程实际的参考价值较小的问题,文中提出一种基于Comsol Multiphysics有限元仿真软件的变压器振动噪声分步有限元仿真方法。首先,考虑硅钢片各向异性修正铁心材料参数,计算铁心在磁致伸缩效应影响下的形变仿真结果;其次,根据实际形态及彼此配合关系,考虑辐向油道,构建绕组、油箱、铁心和垫块的二维模型,获得绕组的振动仿真结果;最后,构建变压器整体三维模型,将铁心在磁致伸缩效应影响下的形变仿真结果以及绕组振动的形变结果引入声场仿真中,并将铁心、
谢璐佳 +7 more
doaj
Clip Voice: Misogyny and the Renegotiation of a Gendered Vocal Style in Chinese Digital Discourse
ABSTRACT The participatory culture of social media allows women's voices to be heard but also parodied and policed. On Chinese social media platforms, where performers rapidly adopt and transform vocal trends for engagement, discourse on gendered vocal styles has proliferated.
Zichuan Yu, Rebecca Lurie Starr
wiley +1 more source
ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue +5 more
wiley +1 more source
全链路仿真常用于验证柔性直流换流阀阀控系统全部板卡接入时的功能和性能。文中基于全链路仿真实验结构分析,提出了一种全链路仿真实验的优化方法,在满足阀控动态性能实验要求的基础上,降低了仿真系统的复杂度。分析全链路仿真系统结构,提出仿真实验结构优化方案;对比实际换流阀及全链路仿真试验延时,提出仿真实验延时优化方法;最后,搭建工程实验系统进行验证。实验结果显示,该优化方法具有实验回路复杂度低和链路延时小的优点,可满足阀控功能性测试和动态性能测试的需要。
蒋妮娜 +4 more
doaj
Abstract This paper develops the concept of “indexical deprivation” from the experiences of English learning in relation to cochlear implant use among Taiwanese deaf adults. Based on the framework of language ideological assemblage, this paper traces how institutional discourses and practices at different levels contribute to the indexicalization ...
Tsung‐Lun Alan Wan
wiley +1 more source
Abstract Simulation studies are essential tools to assess statistical methods. Functioning as controlled experiments, simulations generate data from known underlying processes. However, unclear or incomplete reporting of simulation studies can impact their interpretability and reproducibility, potentially leading to the misuse of statistical methods ...
Coralie Williams +6 more
wiley +1 more source

