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Repurposing EV Batteries for Storing Solar Energy

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Engineering 2023年第10期29卷 45-49页

作者： jinyu chen Haoran Zhang Pengjun Zhao Zhiheng chen jinyue Yan Center for Spatial Information Science The University of TokyoChiba 277-8568Japan School of Urban Planning and Design Peking University Shenzhen Graduate SchoolShenzhen 508055China College of Urban and Environmental Sciences Peking UniversityBeijing 100871China Department of Building Environment and Energy Engineering(BEEE) The Hong Kong Polytechnic UniversityHong Kong 999077China

*** Carbon neutrality has emerged as a global goal due to its pivotal role in addressing the challenges of global climate *** the United Nations Climate Summit was held in November 2020,124 countries promised to reach net-zero emissions[1].Solar energy is one of the important renewable energy sources that significantly curtail carbon emissions originating from fossil fuels.

关键词： Solar neutral emissions

BMTK： a toolkit for determining modules in biological bipartite networks

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Frontiers of Electrical and Electronic Engineering in China 2018年第2期6卷 186-192页

作者： Bei Wang jinyu chen Shihua Zhang NCMIS CEMS RCSDS Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematical Sciences University of Chinese Academy of Sciences Beijing 100049 China

Background： Module detection is widely used to analyze and visualize biological networks. A number of methods and tools have been developed to achieve it. Meanwhile, bipartite module detection is also very useful for mining and analyzing bipartite biological networks and a few methods have been developed for it. However, there is few user- friendly toolkit for this task. Methods： To this end, we develop an online web toolkit BMTK, which implements seven existing methods. Results： BMTK provides a uniform operation platform and visualization function, standardizes input and output format, and improves algorithmic structure to enhance computing speed. We also apply this toolkit onto a drug-target bipartite network to demonstrate its effectiveness. Conclusions： BMTK will be a powerful tool for detecting bipartite modules in diverse bipartite biological networks. Availability： The web application is freely accessible at http：//***/BMTK.

关键词： network biology module detection biological bipartite networks

On Designs of Decentralized Reputation Management for Permissioned Blockchain Networks

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 1755-1773页

作者： jinyu chen Long Shi Qisheng Huang Taotao Wang Daojing He School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing210094China School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhen518055China College of Electronics and Information Engineering Shenzhen UniversityShenzhen518060China School of Computer Science and Technology Harbin Institute of TechnologyShenzhen518055China

In permissioned blockchain networks,the Proof of Authority(PoA)consensus,which uses the election of authorized nodes to validate transactions and blocks,has beenwidely advocated thanks to its high transaction throughput and fault ***,PoA suffers from the drawback of centralization dominated by a limited number of authorized nodes and the lack of anonymity due to the round-robin block proposal *** a result,traditional PoA is vulnerable to a single point of failure that compromises the security of the blockchain *** address these issues,we propose a novel decentralized reputation management mechanism for permissioned blockchain networks to enhance security,promote liveness,and mitigate centralization while retaining the same throughput as traditional *** paper aims to design an off-chain reputation evaluation and an on-chain reputation-aided ***,we evaluate the nodes’reputation in the context of the blockchain networks and make the reputation globally verifiable through smart ***,building upon traditional PoA,we propose a reputation-aided PoA(rPoA)consensus to enhance securitywithout sacrificing *** particular,rPoA can incentivize nodes to autonomously form committees based on reputation authority,which prevents block generation from being tracked through the randomness of reputation ***,we develop a reputation-aided fork-choice rule for rPoA to promote the network’s ***,experimental results show that the proposed rPoA achieves higher security performance while retaining transaction throughput compared to traditional PoA.

关键词： Blockchain reputation management PoA throughput security decentralization

A UWB communication system based on dechirp pulse compression and OOK modulation

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High Technology Letters 2013年第2期19卷 190-196页

作者：赵亮 Jin Liang Huang Kaizhi Zhang Jian chen jinyu National Digital Switching System Engineering & Technological R&D Center

In this paper,a novel UWB communication system structure is *** transmitted signal uses OOK modulation and chirp spread *** received signal first goes through a dechirp pulse compression process,and then is processed with a two-level sliding correlation algorithm for coarse timing synchronization and fine timing *** the SNR estimation,the signal is demodulated by an energy detection *** integrated system level simulation model is established,and the performance of this system is evaluated over the AWGN channel,IEEE 802.15.3a CM1 and CM4 *** theoretical analysis and simulation results show that this UWB communication system can effectively reduce the sampling rate and signal processing speed at the receiver,and it is more suitable for long-distance and low-rate UWB communications with high spreading gain.

关键词： uhra wide band (UWB) dechirp pulse compression on-off keying (OOK) sliding correlation BER

A Deletable and Modifiable Blockchain Scheme Based on Record Verification Trees and the Multisignature Mechanism

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Computer Modeling in Engineering & Sciences 2021年第7期128卷 223-245页

作者： Daojun Han jinyu chen Lei Zhang Yatian Shen Yihua Gao Xueheng Wang Henan Key Laboratory of Big Data Analysis and Processing Henan UniversityKaifeng47500China Institute of Data and Knowledge Engineering Henan UniversityKaifeng47500China School of Computer and Information Engineering Henan UniversityKaifeng47500China Department of Network and Finance Agricultural Bank of China Limited Xuchang BranchXuchang461000China School of Software Pingdingshan UniversityPingdingshan467000China Department of Network and Finance Agricultural Bank of China Limited Nanyang BranchNanyang473000China

As one of the most valuable technologies,blockchains have received extensive attention from researchers and industry circles and are widely applied in various ***,data on a blockchain cannot be *** a result,it is impossible to clean invalid and sensitive data and correct erroneous ***,to a certain extent,hinders the application of blockchains in supply chains and Internet of *** address this problem,this study presents a deletable and modifiable blockchain scheme(DMBlockChain)based on record verification trees(RVTrees)and the multisignature scheme.(1)In this scheme,an RVTree structure is designed and added to the block *** RVTree can not only ensure that a record is true and valid but,owing to its unique binary structure,also verify whether modification and deletion requests are valid.(2)In DMBlockChain,the multisignature mechanism is also *** mechanism requires the stakeholders’signatures for each modification or deletion request and thus ensures that a record will not be modified arbitrarily.A user’s request is deemed valid only if it is dually verified by the RVTree and the multisignature *** analysis finds that DMBlockChain can provide a secure and valid means for modifying and deleting records in a block while ensuring the integrity of the block and that DMBlockChain can effectively save space in some scenarios that require frequent records modification.

关键词： Blockchain record verification trees multisignature DMBlockChain

无骨泰式凤爪贮藏期间品质变化及货架期模型的建立

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肉类研究 2025年第1期39卷 58-63页

作者：张红娟陈进宇褚豪锜程周周李杨柴敏郭赛琴徐巧林衢州市浙工大生态工业创新研究院浙江衢州324400

研究无骨泰式凤爪在不同温度下贮藏14 d内感官评分、丙二醛、总挥发性盐基氮含量、大肠杆菌菌群数和菌落总数的变化规律,并根据菌落总数建立相应的动力学模型,预测无骨泰式凤爪的货架期。结果表明,随着贮藏时间的延长,感官评分有所下降... 详细信息

研究无骨泰式凤爪在不同温度下贮藏14 d内感官评分、丙二醛、总挥发性盐基氮含量、大肠杆菌菌群数和菌落总数的变化规律,并根据菌落总数建立相应的动力学模型,预测无骨泰式凤爪的货架期。结果表明,随着贮藏时间的延长,感官评分有所下降,大肠杆菌未检出,而丙二醛、总挥发性盐基氮含量均上升,说明蛋白质、脂质氧化和微生物侵染的共同作用导致样品逐渐腐败变质,难以食用。根据不同贮藏温度下无骨泰式凤爪菌落总数的零级和一级动力学方程进行拟合,发现更符合一级动力学模型,构建的Arrhenius曲线具有较高的相关性。对计算出的不同温度的货架期进行预测,与实测值间的误差均小于±15.52%,说明以菌落总数为指标建立的货架期预测模型可以较好预测4~15℃贮藏期间无骨泰式凤爪的货架期。

关键词：无骨泰式凤爪动力学方程阿伦尼乌斯方程货架期预测

High-performance terahertz modulators induced by substrate field in Te-based all-2D heterojunctions

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Light(Science & Applications) 2024年第3期13卷 577-586页

作者： Pujing Zhang Qihang Liang Qingli Zhou jinyu chen Menglei Li Yuwang Deng Wanlin Liang Liangliang Zhang Qinghua Zhang Lin Gu chen Ge Kui-juan Jin Cunlin Zhang Guozhen Yang Department of Physics Key Laboratory of Terahertz OptoelectronicsMinistry of Educationand Beijing Advanced Innovation Center for Imaging Theory and TechnologyCapital Normal UniversityBeijing 100048China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Materials Science and Engineering Beijing National Center for Electron Microscopy and Laboratory of Advanced MaterialsTsinghua UniversityBeijing 100084China

High-performance active terahertz modulators as the indispensable core components are of great importance for the next generation communication ***,they currently suffer from the tradeoff between modulation depth and ***,we introduce two-dimensional(2D)tellurium(Te)nanofilms with the unique structure as a new class of optically controlled terahertz modulators and demonstrate their integrated heterojunctions can successfully improve the device performances to the optimal and applicable levels among the existing all-2D broadband *** photoresponse measurements confirm the significant impact of the stacking *** first clarify the direction of the substrate-induced electric field through first-principles calculations and uncover the unusual interaction mechanism in the photoexcited carrier dynamics associated with the charge transfer and interlayer exciton *** advances the fundamental and applicative research of Te nanomaterials in high-performance terahertz optoelectronics.

关键词： performance field terahertz

The magnetic levitation ball position control with fuzzy neural network based on particle swarm algorithm

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The magnetic levitation ball position control with fuzzy neu...

第37届中国控制会议

作者： Hao An jinyu chen College of Automation Chongqing University

Based on the existing magnetic levitation ball position control algorithm, the fuzzy neural network PID controller using particle swarm optimization is proposed in this paper. The improved particle swarm optimization algorithm is used to optimize the initial parameters of the controller offline, and the gradient descent algorithm is used to train the parameters of network *** simulation shows that the maximum overshot and the adjust time in the proposed controller have a significant improvement,which compared with the traditional PID controller and fuzzy neural network controller, the control precision has been improved,the system has good dynamic performance and steady-state precision.

关键词： Improved PSO Fuzzy Neural Network Magnetic Levitation Ball Position Control

来源： cnki会议评论

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沿空留巷围岩卸压支护协同控制技术研究

煤炭科学技术 2020年第8期48卷 44-49页

作者：陈金宇中煤科工开采研究院有限公司北京100013 天地科技股份有限公司开采设计事业部北京100013 煤炭科学研究总院开采研究分院北京100013

为解决沿空巷道受相邻采空区未断裂基本顶形成的悬臂梁支承压力影响的问题,采用水力压裂顶板卸压的方法,对采空区基本顶提前压裂,尽量减少相邻采空区基本顶形成悬臂梁结构,从而降低和转移沿空巷道顶板所受支撑压力的强度。在此基础上采... 详细信息

为解决沿空巷道受相邻采空区未断裂基本顶形成的悬臂梁支承压力影响的问题,采用水力压裂顶板卸压的方法,对采空区基本顶提前压裂,尽量减少相邻采空区基本顶形成悬臂梁结构,从而降低和转移沿空巷道顶板所受支撑压力的强度。在此基础上采用柔模袋充填混凝土在沿空巷道和采空区间做人工墙,对充填混凝土进行井下强度测试,同时对沿空巷道顶板以及所做的人工墙进行强力锚网支护,使其最大限度恢复到三向应力状态,提高其抗载能力。通过现场人工墙压应力和顶底板移近量监测对比表明:进行水力压裂卸压后,人工墙承受沿空巷道顶板最大压应力为21 MPa,比未进行水力压裂卸压区域所受压应力降低了36.4%;沿空巷道顶底板移近量为320 mm,降低了46.5%。水力压裂卸压后,极大改善了3109辅助进风巷的应力环境,降低了沿空巷道顶底板移近量,保证了沿空巷道的安全使用,有效的缓解采掘紧张的局面。

关键词：沿空留巷水力压裂卸压支护协同控制柔模人工墙强力锚网支护人工墙压应力