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Current Zoology 2024年第2期70卷 204-213页

作者： shilong Liu Tianlong Zhou Xiaocai Tan Wambura M.Mtemi Aiwu Jiang Guangxi Key Laboratory of Forest Ecology and Conservation College of ForestryGuangxi UniversityNo.100 East University RoadXixiangtang DistrictNanning 530004China

Understanding the mechanisms of community assembly is a key question in *** pollution may result in significant changes in bird community structure and diversity,with implications for ecosystem processes and ***,the relative importance of these pro-cesses in shaping the bird community at the polluted area is still not ***,we explored bird species richness,functional,and phylogenetic diversity,and the assembly processes of community at the mine region of southwest *** results showed that the 3 dimensions of diversity at the mine area were lower than that at the reference *** the community assembly,the result was O

关键词： clustering community assembly functional diversity mine area phylogenetic diversity stochastic process.

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多股螺旋弹簧动态计算分析

机械工程学报 2007年第3期43卷 199-203页

作者：闵建军王时龙重庆大学机械工程学院重庆400044

结合多股螺旋弹簧的静态设计方法,重点考虑动态性能要求,提出一种静态与动态相结合的设计模型。根据多股螺旋弹簧自身质量对运动的影响,推导弹簧虚拟质量的计算方法,并分析多股螺旋弹簧的动态特性,计算多股螺旋弹簧作为复进簧模型的运... 详细信息

结合多股螺旋弹簧的静态设计方法,重点考虑动态性能要求,提出一种静态与动态相结合的设计模型。根据多股螺旋弹簧自身质量对运动的影响,推导弹簧虚拟质量的计算方法,并分析多股螺旋弹簧的动态特性,计算多股螺旋弹簧作为复进簧模型的运动规律。按照多股螺旋弹簧的振动位移特性,以多股螺旋弹簧动态工作过程的并圈作为边界条件进行动态设计计算。最后给出一个完整的动态设计计算实例,结果证明了所提出方法的有效性,从而为多股螺旋弹簧动态应用提供了设计依据。

关键词：多股螺旋弹簧振动动态设计并圈

PEDOT-based thermoelectric composites:Preparation,mechanism and applications

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Chinese Chemical Letters 2024年第9期35卷 54-64页

作者： Jia Fu shilong Zhang Lirong Liang Chunyu Du Zhenqiang Ye Guangming Chen College of Materials Science and Engineering Shenzhen UniversityShenzhen 518055China

Thermoelectric(TE)materials enable effective and direct energy conversions between heat and electricity,displaying wide applications including waste/low-grade heat harvesting,local cooling,sensing and wearable *** the recently-developed organic and composite TE materials,poly(3,4-ethylenedioxythiophene)(PEDOT)is perhaps the most successful and frequently reported ***,we aim to review the recent advances of the synthesis,mechanism and applications of PEDOT-based TE ***,the research background and the history of TE materials are briefly ***,the synthesis and TE performance of PEDOT-based composites are summarized according to the sequence of films,hydrogels/aerogels and fibers/***,the mechanism,structure and property are *** that,the recent development and its applications of power generation and sensing are ***,we provide an outlook on the prospects and the challenges of PEDOT-based TE composites.

关键词： Thermoelectric PEDOT Composites Preparation Mechanism Application

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京津冀高校协同发展的战略模式和路径探索

国家教育行政学院学报 2015年第12期 3-7页

作者：张亚王世龙南开大学天津300071

《京津冀协同发展规划纲要》的贯彻实施对区域高等教育和高校发展提出了应然要求,而组建战略联盟是实现高校协同发展的战略选择,这既是高校联盟的内生性价值诉求,也是区域内协同和区域间竞争的现实需要。京津冀高校通过组建育人联盟、... 详细信息

《京津冀协同发展规划纲要》的贯彻实施对区域高等教育和高校发展提出了应然要求,而组建战略联盟是实现高校协同发展的战略选择,这既是高校联盟的内生性价值诉求,也是区域内协同和区域间竞争的现实需要。京津冀高校通过组建育人联盟、师资联盟、校地联盟、智库联盟、创新联盟、创业联盟,在享有京津冀协同发展的资源红利和政策支持的同时,也要为推进实施京津冀协同发展做出应有的贡献。

关键词：京津冀协同发展战略联盟

Thermosphere joint observations by TM-1 constellations and Swarm-B during the April 2023 geomagnetic storm

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Earth and Planetary Physics 2024年第2期8卷 307-316页

作者： YongPing Li YueQiang Sun XianGuo Zhang JiangZhao Ai XiaoLiang Zheng Jia Li YuJie wang BiBo Guo Feng Yan shilong Wei XinChun Tang YuanYuan Cao National Space Science Center Chinese Academy of SciencesBeijing 100190China Beijing Key Laboratory of Space Environment Exploration Beijing 100190China Key Laboratory of Science and Technology on Space Environment Situational Awareness Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Shenzhen Aerospace Dongfanghong Satellite LtdShenzhen 518057China

The response of thermosphere density to geomagnetic storms is a complicated physical ***-satellite joint observations at the same altitude but different local times(LTs)are important for understanding this process;however,until now such studies have hardly been *** this report,we analyze in detail the thermosphere mass density response at 510 km during the April 23−24,2023 geomagnetic storm using data derived from the TM-1(TianMu-1)satellite constellation and Swarm-B *** observations show that there were significant LT differences in the hemispheric asymmetry of the thermosphere mass density during the geomagnetic *** observed by satellite TM02 at nearly 11.3 and 23.3 LTs were larger in the northern hemisphere than in the *** TM04 dayside density observations appear to be almost symmetrical with respect to the equator,though southern hemisphere densities on the nightside were ***-B data exhibit near-symmetry between the *** addition,the mass density ratio results show that TM04 nightside observations,TM02 data,and Swarm-B data all clearly show stronger effects in the southern hemisphere,except for TM04 on the dayside,which suggest hemispheric *** South-North density enhancement differences in TM02 and TM04 on dayside can reach 130%,and Swarm-B data even achieve 180%*** the observations of all three satellites,large-scale traveling atmospheric disturbances(TADs)first appear at high latitudes and propagate to low latitudes,thereby disturbing the atmosphere above the equator and even into the opposite ***00 model simulations were also performed on this geomagnetic *** are absent in the NRLMSISE00 *** satellite data suggest that NRLMSISE00 significantly underestimates the magnitude of the density response of the thermosphere during geomagnetic storms,especially at high latitudes in both ***,use of the density simulation of NRLM

关键词： TM-1 constellation Swarm-B joint observations geomagnetic storm Local Times

An inversely designed integrated spectrometer with reconfigurable performance and ultra-low power consumption

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Opto-Electronic Advances 2024年第8期7卷 43-54页

作者： Ang Li Yifan Wu Chang wang Feixia Bao Zongyin Yang shilong Pan National Key Laboratory of Microwave Photonics Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Lab of Modern Optical Technologies of Education Ministry of China Soochow UniversitySuzhou 215006China College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310058China

Despite the pressing demand for integrated spectrometers,a solution that deliver high-performance while being practically operated is still ***,current integrated spectrometers lack reconfigurability in their performance,which is highly desirable for dynamic working *** study presents a viable solution by demonstrating a userfriendly,reconfigurable spectrometer on *** the core of this innovative spectrometer is a programmable photonic circuit capable of exhibiting diverse spectral responses,which can be significantly adjusted using on-chip phase *** distinguishing feature of our spectrometer lies in its inverse design approach,facilitating effortless control and efficient manipulation of the programmable *** eliminating the need for intricate configuration,our design reduces power consumption and mitigates control ***,our reconfigurable spectrometer offers two distinct operating *** the Ultra-High-Performance mode,it is activated by multiple phase-shifters and achieves exceptional spectral resolution in the picometer scale while maintaining broad *** the other hand,the Ease-of-Use mode further simplifies the control logic and reduces power consumption by actuating a single-phase *** this mode provides a slightly degraded spectral resolution of approximately 0.3 nm,it prioritizes ease of use and is wellsuited for applications where ultra-fine spectral reconstruction is not a primary requirement.

关键词： silicon photonics integrated spectrometers computational spectrometers

基于混合网格方法的VARTM工艺充模仿真与实验验证

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复合材料学报 2017年第8期34卷 1736-1744页

作者：杨波王时龙毕凤阳重庆大学机械传动国家重点实验室重庆400044 黑龙江工程学院机电工程学院哈尔滨150001

针对VARTM工艺的特点,建立了充模过程树脂流动和预成型体变形行为数学模型。提出了基于混合网格方法的VARTM充模仿真算法,在该算法中,模具型腔几何模型进行二维或三维网格划分,在每个真空袋表面单元上增加一个一维附属单元,用于在仿真... 详细信息

针对VARTM工艺的特点,建立了充模过程树脂流动和预成型体变形行为数学模型。提出了基于混合网格方法的VARTM充模仿真算法,在该算法中,模具型腔几何模型进行二维或三维网格划分,在每个真空袋表面单元上增加一个一维附属单元,用于在仿真过程中实时地吸收或挤出因真空袋变形而产生的局部树脂体积变化,形成混合网格仿真模型;求解过程中,对树脂流动和预成型体变形分别进行求解后,基于上述混合网格模型进行两者耦合操作,实现了仿真精度和速度的统一。搭建了VARTM充模实验平台,进行了一维充模实验,通过仿真结果与实验测量结果对比,验证了本文算法的正确性。最后,通过三维仿真算例,验证了算法对三维复杂结构和顺序浇口策略仿真的可行性。

关键词：真空辅助树脂传递成型充模过程混合网格数值模拟实验验证

基于层次化数字孪生的工业互联网制造新范式——雾制造

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计算机集成制造系统 2019年第12期25卷 3070-3080页

作者：王时龙王彦凯杨波王四宝重庆大学机械传动国家重点实验室

为打破复杂制造过程中数据融合壁垒并开展大规模的精细化协同数据驱动制造,分析了目前工业互联网在应用推广等方面遇到的问题,阐述了层次化数字孪生、雾计算/边缘计算等新使能技术对解决工业大数据互联互通、人机物数据深度融合、实现... 详细信息

为打破复杂制造过程中数据融合壁垒并开展大规模的精细化协同数据驱动制造,分析了目前工业互联网在应用推广等方面遇到的问题,阐述了层次化数字孪生、雾计算/边缘计算等新使能技术对解决工业大数据互联互通、人机物数据深度融合、实现“人在回路”智能决策等问题的契机。在此基础上提出一种基于层次化多粒度数字孪生的、可定制重构的工业互联网新模式——雾制造。给出了雾制造的定义,分析了雾制造与传统工业互联网、云制造等的区别。讨论了该模式下一种数字孪生模型的分类,并提出基于自相似分形理论的快速建模方法。在此基础上,提出一种基于数字孪生的人机物虚实融合驱动管控机制。最后,以一个机加工的典型应用为案例验证了所提雾制造模式的可行性和有效性。

关键词：雾制造分形理论建模方法层次化数字孪生雾计算/边缘计算个性化定制重构工业互联网

一种实际多约束环境下的云制造服务组合动态自适应重构方法

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机械工程学报 2023年第14期59卷 339-351页

作者：王彦凯王时龙杨波王四宝重庆大学机械传动国家重点实验室重庆400044 清华大学软件学院北京100084

以往云制造服务组合(Cloud manufacturing service composition,CMSC)优化是在制造服务少异常或约束的条件下进行的,这使得现有模型及方法无法适用于多种实际约束下的云制造服务组合优化,更无法在其执行过程出现服务异常时,对CMSC原执... 详细信息

以往云制造服务组合(Cloud manufacturing service composition,CMSC)优化是在制造服务少异常或约束的条件下进行的,这使得现有模型及方法无法适用于多种实际约束下的云制造服务组合优化,更无法在其执行过程出现服务异常时,对CMSC原执行路径进行自适应重构调整。为此,考虑云制造服务组合执行过程中不可忽视的原始CMSC执行路径强制时间约束、制造服务占用时间约束和制造服务强耦合约束,以CMSC的加工质量、成本、服务质量为优化目标,提出一种制造云服务出现异常时实际约束下的服务组合自适应重构调整模型(Cloud manufacturing service composition adaptive reconfiguration,CMSCAR)。为求解该模型,在详细分析所求问题的本质特征的基础上,集成多种优化策略,提出一种基于哈里斯鹰优化算法的服务组合动态重构算法(Service composition dynamic reconfiguration harris hawks optimization,SCDRHHO)。数值算例和应用案例表明,相比粒子群算法(Particle swarm optimization,PSO)、灰狼优化算法(Grey wolf optimizer,GWO)和蝠鲼觅食优化算法(Manta ray foraging optimization,MRFO)等对比算法,所提出的SCDRHHO能够在制造云服务异常出现时在多约束下对正在执行的服务组合进行高效地自适应重构调整,提高了云制造服务组合执行的鲁棒性。

关键词：云制造服务组合服务异常实际约束自适应重构哈里斯鹰优化算法