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淮北平原中小型湖泊鸟类多维度多样性

湖泊科学 2024年第4期36卷 1183-1191页

作者：李永民董锴李东伟王魏根胡文峰阜阳师范大学生物与食品工程学院阜阳236037 阜阳师范大学历史文化与旅游学院阜阳236037

湿地介于陆地和水生生态系统之间,具有丰富的生态价值,湿地公园在维持生态平衡,提高鸟类多样性等方面具有重要作用。2022年3月2023年2月,采用样点法和样线法对淮北平原地区颍州西湖国家湿地公园进行鸟类调查,通过对鸟类群落的物种多样... 详细信息

湿地介于陆地和水生生态系统之间,具有丰富的生态价值,湿地公园在维持生态平衡,提高鸟类多样性等方面具有重要作用。2022年3月2023年2月,采用样点法和样线法对淮北平原地区颍州西湖国家湿地公园进行鸟类调查,通过对鸟类群落的物种多样性、分类学多样性、功能多样性和系统发育多样性4个维度多样性指数以及鸟类生态类群的分析探究湿地公园鸟类群落的时空分布格局。本轮调查共记录鸟类153种共26107只次,其中国家Ⅰ级重点保护野生动物1种,国家Ⅱ级重点保护野生动物16种;IUCN红色名录极危物种1种,易危物种2种。结果表明:春季功能丰富度、物种丰富度和香农-威纳指数在湖泊、防护林和绿化带3种生境之间差异显著,夏季湖泊生境中物种丰富度(24.67±0.94)和系统发育多样性(985.14±52.57)显著高于绿化带和防护林,秋季功能丰富度(8.24±0.90)和系统发育多样性(935.34±37.12)在湖泊中均最高,冬季湖泊香农-威纳指数(2.31±0.03)、功能丰富度(3.73±0.77)显著高于绿化带和防护林2种生境;绿化带生境中,多个多样性指数在春季最高,在冬季均达到最低水平,湖泊生境冬季的物种丰富度(25.00±0.82)、香农-威纳指数和辛普森指数(0.84±0.01)在冬季最高,夏季系统发育多样性最高;防护林生境中物种丰富度(22.67±2.87)在秋季显著高于其他3个季节。单次调查中发现并记录青头潜鸭(Aythya baeri)15只,超过东亚-澳大利西亚候鸟迁徙路线该物种种群数量的1%,达到国际重要湿地标准。结果显示秋季为该湿地公园鸟类多样性保护的重点季节,湖泊生境为该湿地公园的重点保护区域,颍州西湖国家湿地公园对迁徙及越冬水鸟具有重要生态价值,应进一步加强鸟类监测,提升其生态功能。

关键词：淮北平原中小型湖泊鸟类多维度多样性时空格局

High-efficiency Gaussian key reconciliation in continuous variable quantum key distribution

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Science China(Physics,Mechanics & Astronomy) 2016年第1期59卷 53-57页

作者： Zengliang Bai XuYang Wang ShenShen Yang yongmin li State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University

Efficient reconciliation is a crucial step in continuous variable quantum key distribution. The progressive-edge-growth(PEG) algorithm is an efficient method to construct relatively short block length low-density parity-check(LDPC) codes. The qua-sicyclic construction method can extend short block length codes and further eliminate the shortest cycle. In this paper, by combining the PEG algorithm and quasi-cyclic construction method, we design long block length irregular LDPC codes with high error-correcting capacity. Based on these LDPC codes, we achieve high-efficiency Gaussian key reconciliation with slice recon-ciliation based on multilevel coding/multistage decoding with an efficiency of 93.7%.

关键词： Gaussian key reconciliation irregular LDPC codes progressive-edge-growth quasi-cyclic construction method

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地方院校园林专业区域化执业人才培养机制

武夷学院学报 2024年第3期43卷 91-95页

作者：黄新赵文慧李永民阜阳师范大学生物与食品工程学院阜阳师范大学外国语学院安徽阜阳236037

地方院校园林专业要摆脱单纯照搬名校教育框架的束缚,就必须探索区域化特色办学道路,健全区域培养机制。皖北F校凭借丰富的教育实践,首创了“四位一体”的区域人才综合培养机制:工程贴身服务、科教融汇协作、产教联动培养、区域就业引... 详细信息

地方院校园林专业要摆脱单纯照搬名校教育框架的束缚,就必须探索区域化特色办学道路,健全区域培养机制。皖北F校凭借丰富的教育实践,首创了“四位一体”的区域人才综合培养机制:工程贴身服务、科教融汇协作、产教联动培养、区域就业引导。实践证明,这种创新的培养方式有效地大幅提升了毕业生适应长三角工程市场的能力,为区域“美丽大蓝图”培养了众多致力于区域园林事业的新一代高素质专业人才。

关键词：园林专业区域化执业建设者人才培养机制地方高校

BDLR:lncRNA identification using ensemble learning

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BIOCELL 2022年第4期46卷 951-960页

作者： LEJUN GONG SHEHAI ZHOU JINGMEI CHEN yongmin li li ZHANG ZHIHONG GAO Jiangsu Key Lab of Big Data Security&Intelligent Processing School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing210046China Smart Health Big Data Analysis and Location Services Engineering Laboratory of Jiangsu Province Nanjing210046China Zhejiang Engineering Research Center of Intelligent Medicine Wenzhou325035China College of Computer Science and Technology Nanjing Forestry UniversityNanjing210037China

Long non-coding RNAs(lncRNAs)play an important role in many life activities such as epigenetic material regulation,cell cycle regulation,dosage compensation and cell differentiation regulation,and are associated with many human *** are many limitations in identifying and annotating lncRNAs using traditional biological experimental *** the development of high-throughput sequencing technology,it is of great practical significance to identify the lncRNAs from massive RNA sequence data using machine learning *** on the Bagging method and Decision Tree algorithm in ensemble learning,this paper proposes a method of lncRNAs gene sequence identification called *** identification results of this classification method are compared with the identification results of several models including Byes,Support Vector Machine,Logical Regression,Decision Tree and Random *** experimental results show that the lncRNAs identification method named BDLR proposed in this paper has an accuracy of 86.61%in the human test set and 90.34%in the mouse for lncRNAs,which is more than the identification results of the other ***,the proposed method offers a reference for researchers to identify lncRNAs using the ensemble learning.

关键词： lncRNAs High-throughput sequencing Ensemble learning Bagging Decision Tree

Reconfigurable optical neural networks with Plug-and-Play metasurfaces

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Opto-Electronic Advances 2024年第7期7卷 1-3页

作者： yongmin liu Yuxiao li Department of Mechanical and Industrial Engineering Northeastern UniversityBostonMassachusetts 02115USA Department of Electrical and Computer Engineering Northeastern UniversityBostonMassachusetts 02115USA

In a very recent study,*** Huang and co-workers proposed and demonstrated reconfigurable optical neural networks based on cascaded *** fixing one metasurface and switching the other pluggable metasurfaces,the neural networks,which operate at near-infrared wavelengths,can perform distinct recognition tasks for handwritten digits and fashion *** innovative device opens up an avenue for all-optical,high-speed,low-power,and multifunctional artificial intelligence systems.

关键词： surfaces networks neural

Generalized eigenvalue method for coupled differential-difference equations with two delay channels

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Generalized eigenvalue method for coupled differential-diffe...

Continuous variable quantum key distribution with a shared partially characterized entangled source

第36届中国控制会议

作者： yongmin li Yuming Chu Weifeng Xia Zhengjiang Zhao School of Science Huzhou Teachers College Nanjing University of Science and Technology

ISBN: (纸本)9781538629185

For it can effective representing many practical time-delay systems with low dimension delay channel, the study of coupled differential-difference equations（CDDE） has received renewed attention in recent years. Based on the method of generalized eigenvalue problem（GEVP） of linear matrix inequalities and discretized Lyapunov-Krasovskki functional（DLF）, this article gives the accurate estimate of stable delay domain of a kind of CDDE with two delay channels through an appropriate iteration.

关键词： Generalized eigenvalue coupled differential-difference equations discretized Lyapunov-Krasovskki functional

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Photonics Research 2023年第3期11卷 463-475页

作者： SHANNA DU PU WANG JIANQIANG liU YAN TIAN yongmin li State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China School of Information Shanxi University of Finance and EconomicsTaiyuan 030006China

Locking the sophisticated and expensive entanglement sources at the shared relay node is a promising choice for building a star-type quantum network with efficient use of quantum resources,where the involved parties only need to equip low-cost and simple homodyne ***,to our best knowledge,we demonstrate the first experimental continuous variable quantum key distribution with an entanglement source between the two *** consider a practical partially characterized entangled source and establish the security analysis model of the protocol under realistic *** applying a biased base technology,the higher key rate than that of the original protocol is *** experimental results demonstrate that the distance between two users can reach up to 60 km over telecom single-mode fiber,implying the feasibility for high-rate and secure communication with a shared entangled source at metropolitan distances.

关键词： quantum distribution applying

Numerical simulation on gas-solid flow during circulating fluidized roasting of bauxite by a computational particle fluid dynamics method

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Particuology 2024年第7期90卷 179-188页

作者： Chengming Xie Rongbin li Qijin Wei Fengqin liu Hongliang Zhao yongmin Zhang Hong Yong Sohn State Key Laboratory of Green and Low-carbon Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China BGRIMM Technology Group Beijing 100160China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China Department of Materials Science and Engineering The University of UtahSalt Lake CityUT 84112USA

A full-cycle numerical simulation of a circulating fluidized bed(CFB)by the use of the computational particle fluid dynamics(CPFD)method has been *** effects of the presence or absence of the secondary air,different secondary air positions,and different secondary air ratios on the gas–solid flow characteristics were *** results show that the presence of the secondary air makes a core-annular structure of the velocity distribution of particles in the fluidized bed,which enhances the uniformity of particles’distribution and the stability of *** position and the ratio of the secondary air have a significant impact on the particle distribution,particle flow rate,and gas flow rate in the fluidized *** the secondary air position and ratio are optimal,the particles,particle flow rate,and air flow rate in the CFB are evenly distributed,the gas–solid flow state is good,and the CFB can operate stably.

关键词： Circulating fluidized bed CPFD method Secondary air position Secondary air ratio Gas–solid flow characteristics

An inorganic–organic hybrid CQDs@PVP lubricant additive:Achieving low friction and wear in PEG and water

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Friction 2024年第10期12卷 2281-2297页

作者： Tao YANG Xiaozhen WANG Huanchen liU Qin ZHAO Kuiliang GONG Weimin li yongmin liANG Xiaobo WANG State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Zibo Innovation Center of High-end Synthetic Lubricating Materials Zibo 255000China

High-temperature lubrication has always been a hot topic in the lubricant and grease industry,and is also an essential concern in the high-end equipment sector to be *** quantum dots(CQDs)are an emerging material widely applied in the field of lubrication,owing to their exceptional lubricity and high load-bearing ***,the vulnerability of CQDs to oxidation in air and reduced stability dramatically restrict their high-temperature application *** this study,a nanocomposite of amphiphilic polyvinyl pyrrolidone(PVP)homopolymer with excellent lubricating properties and thermal stability,which is hydrogen bonded to CQDs(CQDs@PVP),was designed to achieve low friction and wear of lubricants at high *** CQDs@PVP are consistently dispersed in both PEG400 and water,and exhibit superior lubricity compared to unmodified CQDs at high temperatures(ranging from 200‒150°C and 90‒50°C).Meanwhile,the dense carbon film on the wear surface and the chemically reactive film of iron compounds directly contribute to the enhanced lubrication *** analytical results demonstrate the powerful candidacy of CQDs@PVP as a lubrication additive and promote future high-temperature applications of CQDs in industrial production.

关键词： high temperature lubricants amphiphilic lubrication additives CQDs@PVP lubrication properties carbon film