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Medium and long-term thermal coal contract embedded reparations from the perspective of an evolutionary game

Global Energy Interconnection 2022年第2期5卷 181-191页

作者： yalin chen Yaqing Mou Shilong Ye Yan chen School of Management Science and Engineering Nanjing University of Finance and EconomicsNanjing 210023P.R.China College of Letter and Science University of California Davis95618USA Department of Computer Science Guiyang UniversityGuiyang 550002P.R.China

Coal-fired electricity enterprises are caught in the dilemma of relative fixed prices and rising costs under the scenario of ***,soaring market-oriented coal pricing results in coal enterprises’increasing defaults on thermal coal medium-and long-term contracts(MLC).To investigate the implementation of MLC at the micro-level,this study formalized the contractual behaviors of coal and coal-fired electricity enterprises based on the asymmetric evolutionary *** formalized the evolving behaviors of both parties using replicator dynamics equations and proved that there were two evolutionary stabilization strategies(ESSs):compliance and coal enterprises’unilateral default.A multi-agent-based simulation was applied to verify the evolving process of ESSs and determine the critical values of MLC design by sensitive *** the simulation results,coal-fired electricity enterprises do not stop generation under the current carbon quota allocation mechanism,even if carbon emission trading increases electricity generation *** enterprises choose to“default”when the market price of coal is higher than the contracted price by 18%.However,if the original reparation is increased by 5%,the compliance rate of the coal enterprises *** reparations embedded in the MLC improved enforcement during the contracting ***,the proposed policy implications have practical significance for enhancing the coordinated operation of coal-electricity energy supply chains.

关键词： MLC Reparation Contractual behavior Evolutionary game Simulation.

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Anti-asynchrony output regulation for switched systems under switching-Q-learning event-triggering against DoS attacks

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Science China(Information Sciences) 2024年第11期67卷 194-210页

作者： Lili LI yalin chen Dan MA Qingjun GUO College of Marine Electrical Engineering Dalian Maritime University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University College of Information Science and Engineering Northeastern University

This paper proposes a secure output regulation(SOR) scheme for network switched systems(NSSs) experiencing severely unstable dynamics(SUDs). This scheme aims to address the complex consecutive asynchrony caused by long-duration denial-of-service(LDDoS) attacks. When the denial-of-service(DoS) attack lasts longer than the dwell time of each subsystem, switching to a new subsystem is necessary to manage the unstable dynamic behavior caused by SUDs. The controller cannot immediately obtain information about the new modality. However, owing to the delayed access to new modality information by the controller, consecutive asynchrony occurs. To tackle this, we propose a resilient switching rule that mitigates the impact of consecutive asynchrony by choosing the optimal subsystem once the minimum dwell time is met. Multi-stage event-triggering mechanisms(METMs) are proposed to coordinate with switching signals by incorporating modality matching conditions and a switching-Q-learning algorithm. These mechanisms reduce asynchronous durations by aligning modality matching conditions and terminating attacks using attack parameters. This control scheme for SOR of NSSs with SUDs disturbed by LDDoS attacks provides a detailed analysis of dynamic switching behavior, leveraging the resilient switching rule and METMs. Finally,the feasibility of the proposed methodology is substantiated through simulations with an F-18 aircraft model.

关键词： switched systems long-duration DoS attacks consecutive asynchrony switching-$Q$-learning algorithm multi-stage event-triggering resilient switching rule

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A process monitoring method for autoregressive-dynamic inner total latent structure projection

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Journal of Systems Engineering and Electronics 2024年第5期35卷 1326-1336页

作者： chen yalin KONG Xiangyu LUO Jiayu School of Missile Engineering Rocket Force University of EngineeringXi’an 710025China AVIC chengdu Caic Electronics Co. LtdChengdu 610091China

As a dynamic projection to latent structures(PLS)method with a good output prediction ability,dynamic inner PLS(DiPLS)is widely used in the prediction of key performance ***,due to the oblique decomposition of the input space by DiPLS,there are false alarms in the actual industrial process during fault *** address the above problems,a dynamic modeling method based on autoregressive-dynamic inner total PLS(AR-DiTPLS)is *** method first uses the regression relation matrix to decompose the input space orthogonally,which reduces useless information for the predic-tion output in the quality-related dynamic ***,a vector autoregressive model(VAR)is constructed for the predic-tion score to separate dynamic information and static *** on the VAR model,appropriate statistical indicators are further constructed for online monitoring,which reduces the occurrence of false *** effectiveness of the method is verified by a Tennessee-Eastman industrial simulation process and a three-phase flow system.

关键词： dynamic characteristic fault detection feature extraction process monitoring projection to latent structure(PLS) quality-related spatial partitioning

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m^(6)A modification of plant virus enables host recognition by NMD factors in plants

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Science China(Life Sciences) 2024年第1期67卷 161-174页

作者： Hao He Linhao Ge yalin chen Siwen Zhao Zhaolei Li Xueping Zhou Fangfang Li State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China State Key Laboratory of Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhou 310029China

N^(6)-methyladenosine(m^(6)A)is the most abundant eukaryotic mRNA modification and is involved in various biological *** evidence has implicated that m^(6)Amodification is an important anti-viral defense mechanism in mammals and plants,but it is largely unknown how m^(6)Aregulates viral infection in *** we report the dynamic changes and functional anatomy of m^(6)Ain Nicotiana benthamiana and Solanum lycopersicum during Pepino mosaic virus(PepMV)infection.m^(6)Amodification in the PepMV RNA genome is conserved in these two *** of the m^(6)Awriters,mRNA adenosine methylase A(MTA),and HAKAI inhibit the PepMV RNA accumulation accompanied by increased viral m^(6)Amodifications,whereas deficiency of these writers decreases the viral RNA m^(6)Alevels but enhances virus *** study reveals that the cytoplasmic YTH-domain family protein NbECT2A/2B/2C as m^(6)Areaders are involved in anti-viral ***-protein interactions indicate that NbECT2A/2B/2C interact with nonsense-mediated mRNA decay(NMD)-related proteins,including NbUPF3 and NbSMG7,but not with NbUPF1.m^(6)Amodification-mediated restriction to PepMV infection is dependent on NMD-related *** findings provide new insights into the functionality of m^(6)Aanti-viral activity and reveal a distinct immune response that NMD factors recognize the m^(6)Areaders-viral m^(6)ARNA complex for viral RNA degradation to limit virus infection in plants.

关键词： m^(6)A Pepino mosaic virus plant defense m^(6)A readers NMD factors

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基于有限元法的550kV SF_6终端电场分析

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高压电器 2015年第10期51卷 128-131页

作者：陈亚林国网甘肃省电力公司检修公司兰州730070

文中首先推导了含悬浮电极时的轴对称结构的有限元方程,然后利用Fortran语言进行了编程,完成了含悬浮电极时的有限方法计算程序的编制工作,并利用该程序计算分析了550 kV SF6终端中有无悬浮电极时的电场分布,进行比较。计算分析说明,终... 详细信息

文中首先推导了含悬浮电极时的轴对称结构的有限元方程,然后利用Fortran语言进行了编程,完成了含悬浮电极时的有限方法计算程序的编制工作,并利用该程序计算分析了550 kV SF6终端中有无悬浮电极时的电场分布,进行比较。计算分析说明,终端中采用悬浮电极后能有效地降低终端内外表面的最大场强,避免了此处空气中局部放电的发生,提高了终端运行的可靠性。在充SF6气体压力为0.3 MPa(表计)时,两种结构的终端各进行了正负15次峰值为1 675 kV的雷电冲击电压试验,其中单屏蔽结构的套管有3次在负极性发生了击穿。试验证明,含有悬浮电极结构的终端绝缘可靠性更高。

关键词： SF6终端悬浮电极电场有限元方法

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Investigation and Analysis on Current Situation of Coal-Burning Fluorosis Prevalence

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Open Journal of Epidemiology 2017年第2期7卷 115-123页

作者： Wei Yan Jun Xie Xinshu Li yalin chen Wenli Huang Shuang Zhou Disease Control and Prevention Center of Chongqing City Chongqing China

Objective: The purpose of the paper is to provide the result from investigation on the current situation of coal-burning fluorosis prevalence in Chongqing City and make an assessment on the prevention and curing measures. Method: The Dean’s Method is applied to investigate on the fluorotic teeth of locally-born children aged between 8 to 12;investigate how modified cooking stoves are utilized by households and how food maize and hot pepper are being dried;and test the urinary fluorine content and pepper fluorine content. Result: The investigations show that, in the 661 villages with illness history from the 100 townships of 13 districts in Chongqing City, 11.28% (7464/ 66,162) of the children aged between 8 and 12 suffer from dental fluorosis;the stoves modified rate, qualified rate of modified stoves, and correct utilization rate of qualified modified stoves are respectively 100%, 98.82%, and 99.45%;and food maize and hot pepper’s drying rates are respectively 99.88% and 99.75%. Conclusion: The result shows that the coal-burning type fluorosis prevalence in the endemic area of Chongqing City has decreased dramatically, the preventive measure is effectively implemented, and a long-term preventive mechanism has preliminarily been established.

关键词： Coal-Burning Type Fluorosis Current Prevalence Conditions

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Porosity, permeability and rock mechanics of Lower Silurian Longmaxi Formation deep shale under temperature-pressure coupling in the Sichuan Basin, SW China

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Petroleum Exploration and Development 2023年第1期50卷 85-98页

作者： SUN Chuanxiang NIE Haikuan SU Haikun DU Wei LU Ting chen yalin LIU Mi LI Jingchang State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 102206China Sinopec Petroleum Exploration and Production Research Institute Beijing 102206China Sinopec Key Laboratory of Shale Oil/Gas Exploration&Production Beijing 102206China School of Energy Resources China University of GeosciencesBeijing 100083China Research Institute of Petroleum Exploration and Development Sinopec Jianghan Oilfield CompanyWuhan 430223China

To investigate the porosity, permeability and rock mechanics of deep shale under temperature-pressure coupling, we selected the core samples of deep shale from the Lower Silurian Longmaxi Formation in the Weirong and Yongchuan areas of the Sichuan Basin for porosity and permeability experiments and a triaxial compression and sound wave integration experiment at the maximum temperature and pressure of 120 ℃ and 70 MPa. The results show that the microscopic porosity and permeability change and the macroscopic rock deformation are mutually constrained, both showing the trend of steep and then gentle variation. At the maximum temperature and pressure, the porosity reduces by 34%–71%, and the permeability decreases by 85%–97%. With the rising temperature and pressure, deep shale undergoes plastic deformation in which organic pores and clay mineral pores are compressed and microfractures are closed, and elastic deformation in which brittle mineral pores and rock skeleton particles are compacted. Compared with previous experiments under high confining pressure and normal temperature,the experiment under high temperature and high pressure coupling reveals the effect of high temperature on stress sensitivity of porosity and permeability. High temperature can increase the plasticity of the rock, intensify the compression of pores due to high confining pressure, and induce thermal stress between the rock skeleton particles, allowing the reopening of shale bedding or the creation of new fractures along weak planes such as bedding, which inhibits the decrease of permeability with the increase of temperature and confining pressure. Compared with the triaxial mechanical experiment at normal temperature, the triaxial compression experiment at high temperature and high pressure demonstrates that the compressive strength and peak strain of deep shale increase significantly due to the coupling of temperature and pressure. The compressive strength is up to 435 MPa and the peak strain e

关键词： Sichuan Basin Longmaxi Formation deep shale gas porosity permeability rock mechanics high temperature and high pressure triaxial compression

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基于食品包装箱码放的码垛机器人运动学

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食品工业 2020年第2期41卷 206-209页

作者：陈亚琳南京工业职业技术学院南京210023

随着食品行业产量的不断增加,及用人成本的不断升高,急需高效、低成本的码垛机器人。根据食品包装箱码放的现场要求,设计了一台基于平行四连杆机构的四自由度码垛机器人。采用D-H法推导出了其正、逆运动学方程,从而得到了各关节的速度... 详细信息

随着食品行业产量的不断增加,及用人成本的不断升高,急需高效、低成本的码垛机器人。根据食品包装箱码放的现场要求,设计了一台基于平行四连杆机构的四自由度码垛机器人。采用D-H法推导出了其正、逆运动学方程,从而得到了各关节的速度与加速度的数学方程,然后运用ADAMS软件建立了虚拟样机模型,得到了末端执行器的位移、速度与加速度的仿真曲线。验证了运动学理论分析的正确性,为食品包装箱码机器人的选型、轨迹规划及控制系统的设计提供了有效的理论依据,为码垛机器人大范围应用于食品工业提供了有效的技术支持。

关键词：食品码垛机器人运动学

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涪陵页岩气田焦石坝地区含气量定量预测技术

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海洋地质前沿 2017年第1期33卷 53-61页

作者：陈亚琳中国石化江汉油田分公司勘探开发研究院武汉430223

页岩含气量是页岩气勘探选区和储层评价的一项重要指标。目前,利用地震资料对页岩含气性评价多停留在定性预测阶段,定量化表征方法尚不成熟。从已钻井的实测含气量出发,利用横波测井资料,分析实测含气量与地球物理参数之间的关系,利用... 详细信息

页岩含气量是页岩气勘探选区和储层评价的一项重要指标。目前,利用地震资料对页岩含气性评价多停留在定性预测阶段,定量化表征方法尚不成熟。从已钻井的实测含气量出发,利用横波测井资料,分析实测含气量与地球物理参数之间的关系,利用数理统计学的思想,优选出密度、纵波阻抗、纵横波速度比、λρ4个参数变量,建立了适合焦石坝页岩气田的含气量多元线性回归预测模型;通过叠前同时反演获得的密度、纵波阻抗等相关数据体,实现页岩含气量的定量预测,结果表明,预测的含气量与实钻结果吻合度较高,相对误差小,预测方法可靠;同时指出,焦石坝地区五峰组—龙马溪组一亚段含气量较高,为有利开发层段。

关键词：页岩气田多元线性回归叠前同时反演含气量

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三伺服枕式包装机控制系统设计

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包装与食品机械 2020年第1期38卷 61-63页

作者：陈亚琳南京工业职业技术学院南京210023

为了提高包装机的自动化程度,提升包装速度和效率,针对三伺服枕式包装机基本结构和包装机工作流程,开发了一套基于触摸屏和DSP多轴通用的包装机控制器,并详细介绍了控制器的硬件结构。针对包装机工作流程并在硬件基础上开发了与之相配... 详细信息

为了提高包装机的自动化程度,提升包装速度和效率,针对三伺服枕式包装机基本结构和包装机工作流程,开发了一套基于触摸屏和DSP多轴通用的包装机控制器,并详细介绍了控制器的硬件结构。针对包装机工作流程并在硬件基础上开发了与之相配套的控制系统软件。该控制系统结构简单、易实现,能够满足包装机运动控制要求,对于提升包装质量和包装效率具有重要意义。

关键词：包装机三伺服枕式触摸屏硬件

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