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基于预测控制的储能系统多时间尺度动态响应优化研究 [PDF]
全球能源互联网, 2020 风电固有的随机性使其难以在长时间尺度上被准确预测，且预测误差随预测时间的延长而增大，导致用于抑制风电随机性的储能控制策略往往与实际需求偏差较大。为了有效应对风电的动态随机性，应用由不同响应能力及容量的储能单元组成的混合储能系统，提出一种基于多时间级分层思想与模型预测控制（model predictive control,MPC）理论相结合的混合储能分层MPC优化策略，实现对风电和储能的精准控制。在对风电进行周期预测的基础上构建储能分层动态响应优化模型 ...
吴传申 +4 more
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Dizhen xuebao, 2023 以2000年两次MW 6.5冰岛地震为例，利用近场地下水位的同震响应和震后响应约束孔隙模型参数，分析了孔隙回弹效应造成的地表变形大小和时间演化过程。首先利用数值模拟方法获得地震造成的孔隙压力变化和测井水位响应的时间序列，并以测井水位的同震阶跃幅值和震后水位恢复速率分别约束孔隙模型中的Skempton系数和扩散系数；然后基于孔隙弹性模型使用最优孔隙参数模拟震后孔隙回弹效应引起的地壳变形。结果显示：孔隙压力的同震响应控制着孔隙回弹引起的地壳变形，其变形速率与流体扩散系数呈正相关关系 ...
Zhantian Liu +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2004 检验信息呈现方式、时间压力和个体认知风格对网上学习的影响效应.包括两个实验：实验一考察信息呈现方式和个体认知风格的影响；实验二考察信息呈现方式和时间压力的影响.结果表明：(1)在学习时间受限时，超文本优于线性文本，而在学习时间宽松时，两者无显著差异；(2)当时间压力不大时，呈现内容组织图不利于学习；(3)网络使用经验可掩盖认知风格的效应.本研究结论认为：文本类型、内容组织图和时间压力对网上学习绩效存在显著的交互作用.
ZHANGZhi-jun(张智君) +3 more
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Cloud server aging prediction method based on hybrid model of auto-regressive integrated moving average and recurrent neural network [PDF]
, 2021 In view of the nonlinear, stochastic and sudden characteristics of operating environment of cloud server system, a software aging prediction method based on hybrid auto-regressive integrated moving average and recurrent neural network model (ARIMA-RNN ...
Haining MENG +5 more
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中国东南沿海地区钻孔体应变对超强台风“利奇马” 的响应特征与机制
Dizhen xuebao, 2020 依据超强台风 “利奇马” 的强度和时空演变特征，本文采用经验模态分解等方法系统地分析并揭示了该台风对我国东南沿海地区钻孔体应变影响的全貌，并在此基础上对台风扰动的机制进行了初步探讨。结果表明：① 台风演变过程中漏斗状的长周期气压波动，是造成钻孔体应变大幅张性变化的物理成因，且体应变对台风低压系统具有即时的线弹性响应特征，其变化形态与气压漏斗高度相似，弹性变形的持续时间与气压波动的历时较一致；② 在周期为103 h时，−18.2 hPa的气压变幅便可在地下62 m深处产生高达−112.1×10−9的体应变，
Xiaolin Yang, Jinling Yang, Zigen Wei
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Deep reinforcement learning based algorithm for real-time QoS optimization of software-defined security middle platform [PDF]
, 2023 To overcome the problem that the real-time optimization of the quality of service (QoS) in software-defined security scenarios was hindered by the mismatch between security protection measures and business scenarios, which led to difficulties in ...
Yongtai QIN, Yuancheng LI
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Satellite Onboard Observation Task Planning Based on Attention Neural Network [PDF]
, 2022 Satellite onboard autonomous task planning is one of the key technologies for the operation of earth observation satellites,which has received great attention from researchers in recent years.Considering the limited computing resources,as well as the ...
PENG Shuang, WU Jiang-jiang, CHEN Hao, DU Chun, LI Jun
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Dianci bileiqi, 2021 基于多导线的Agrawal场-线耦合模型,采用"两步走"方法,从理论层面研究了屏蔽线和三相线路的空间结构变化对耦合电压峰值的影响。笔者从两个方面进行讨论:1)屏蔽线的高度对耦合电压的影响,其他条件不变,发现屏蔽线越高,相线受到的屏蔽效应呈现先增大后减小的趋势。线路结构两边的两根相线在屏蔽线高度为17.05 m时,屏蔽效应达到最大;但对中间的一根相线而言,屏蔽线高度为12.05 m时,屏蔽效应最大。2)保持屏蔽线和三相线的高度不变,通过改变三相线的水平距离(屏蔽线的水平间距也随之改变 ...
宁欣婷 +4 more
doaj
Current status and developing recommendations of tailings dam failure [PDF]
, 2018 This is the final version of the article. Available from Hindawi Publishing Corporation via the DOI in this record.Tailings dam failure accidents with limited emergency response time and huge potential threats, can often lead to heavy casualties and ...
Bu, L +4 more
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Ustor: cloud storage system based on regenerating codes [PDF]
, 2014 To ensure reliability of user's data, multiple clouds are responsible for storing the data. For purpose of mini-mizing storage cost and repair bandwidth, a method of utilizing functional regenerating codes(FRC) to encode data to several blocks, which are
Bai LI, Dan FENG, Qing LIU
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