, 2019 近年来,深度学习技术的快速发展推动了机器学习的广泛应用.其中,储备池计算(Reservoir Computing)方法由于在混沌时间序列预测方面的卓越效果而受到了越来越多的重视,形成了一个新的研究热点.本文以传统的长短期记忆网络(LSTM)和全连接层作为模型的基础,构建了基于循环神经网络的LSTM学习机.在仿真实验中,我们以平均有效预测时间作为度量指标,使用模型对洛伦兹系统的状态变量进行预测,并针对混沌系统特殊的动力学性质,为模型搭配了四项策略来辅助预测.结果表明, LSTM学习机搭配合适的组合策略 ...
熊有成, 赵鸿
core
Optimization and application of sand bailing technology for coalbed methane horizontal wells [PDF]
Objective and Methods Coalbed methane (CBM) horizontal wells face challenges such as sand accumulation in completion strings, pipe wall scaling, and pump sticking, leading to declined CBM production or shutdown of these wells.
Bao’an XIAN +10 more
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Development of a power recovery-based dynamic loading system for full-size drill rods in coal mines [PDF]
ObjectiveThis study aims to simulate the actual forces applied to drill rods during the borehole drilling for gas drainage from underground coal mines to satisfy the requirements of drill rods’ fatigue tests.
Jie WANG, Jing ZHANG
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Gaoya dianqi针对全钒液流电池（VFB）储能系统在传统恒功率充放电控制下存在的初始电流冲击大和能量利用率低等问题，文中提出一种基于功率自适应的充放电控制策略。该策略通过自适应功率调节机制，动态优化充放电功率轨迹：在充放电初期有效抑制电流冲击，延长电池寿命；在末期则动态调节功率变化速率，使端电压逼近截止电压，拓宽荷电状态（SOC）可用区间，实现深度充放电，避免因触及电压限制而降低利用率。为全面反映电池运行特性，建立了涵盖电气、电化学、流体力学及温度场的VFB多物理场耦合模型，并给出了功率自适应控制策略的控制框图和算法 ...
张红 +5 more
doaj
Research on hole protection technology of screen pipe for hydraulic transportation and automatic butt joint in high position directional borehole [PDF]
Ensuring the stable extraction of high position directional long boreholes in the mining process of working face is the premise of realizing ' replacing the roadway with the boreholes', and the use of screen pipe completion is an effective hole ...
Jinbao ZHANG
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Aerodynamic Drag Characteristics and Optimization Design of Ultra-High Speed Multi-Car in Gravity Energy Storage Shaft [PDF]
[Objective] As a physical energy storage method characterized by both environmental protection and economic efficiency, gravity energy storage is expected to become an important support for the sustainable development of renewable energy in the future ...
Hao LI +7 more
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Research progress and breakthrough directions of the key technical fields for large scale and efficient exploration and development of coalbed methane in Xinjiang [PDF]
The Xinjiang Uygur Autonomous Region has presented the expected resource conditions and work foundations for a large-scale coalbed methane (CBM) exploration and development, which shows that its CBM resources below the depth of 2000 m are 7.5 trillion m3,
Bo WEI +12 more
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Zhongguo cuzhong zazhi目的 基于多组学数据解析动脉粥样硬化型缺血性卒中的免疫特征。 方法 通过孟德尔随机化联合转录组数据筛选动脉粥样硬化型缺血性卒中的相关基因。采用基因富集分析（gene set enrichment analysis，GSEA）和基因集变异分析（gene set variation analysis，GSVA）解析基因和通路功能。通过基因/蛋白质相互作用检索工具（search tool for the retrieval of interacting genes/proteins，STRING ...
迟骋，华实，车峰远（CHI Cheng, HUA Shi, CHE Fengyuan）
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Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining [PDF]
Since the 14th Five-Year Plan, my China’s coal mine digital intelligence technology has developed rapidly, especially in thin coal seam mining. However, the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is ...
Bin GU +10 more
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Characteristics and prevention and control techniques of typical water hazards in coal mines in Shaanxi Province [PDF]
Shaanxi province is rich in coal resources and is one of the main coal-producing provinces in China, with a coal production of 746 million tons in 2022. Due to the obvious differences in geological and hydrogeological conditions in the coal mining areas ...
Chaofeng LI +7 more
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