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Distributed Behavior Control Method for Indoor Multi-robot Collaborative Odor Source Localization

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Distributed Behavior Control Method for Indoor Multi-robot C...

AAV mediated carboxyl terminus of Hsp70 interacting protein overexpression mitigates the cognitive and pathological phenotypes of APP/PS1 mice

第43届中国控制会议

作者： mengjie jing Bin Xin National Key Laboratory of Autonomous Intelligent Unmanned Systems School of Automation Beijing Institute of Technology

The paper proposes a distributed behavior control method for indoor multi-robot collaborative odor source localization,aiming to improve the efficiency of odor source search while avoiding *** problem is crucial in scenarios such as fire rescue,drug inspection and so *** robots search for the plume in a spiral *** share the information of the location with the highest detected odor concentration among them and guide robots that do not detect gas to move towards it,which can accelerate the plume discovery speed of the whole *** robots use particle filter to estimate the location of the odor *** identify the odor source by setting particle convergence and distance convergence thresholds.A state machine is used to achieve effective odor source search by flexibly selecting the appropriate method according to the current environment and task *** Carlo simulation results demonstrate that the proposed algorithm outperforms multi-robot infotaxis method 50%.

关键词： Multi-robot collaboration Odor source localization Finite state machine Particle filter

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Neural Regeneration Research 2025年第1期20卷 253-264页

作者： Zhengwei Hu jing Yang Shuo Zhang mengjie Li Chunyan Zuo Chengyuan Mao Zhongxian Zhang Mibo Tang Changhe Shi Yuming Xu Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhouHenan ProvinceChina Academy of Medical Sciences of Zhengzhou University ZhengzhouHenan ProvinceChina NHC Key Laboratory of Prevention and treatment of Cerebrovascular Diseases The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhouHenan ProvinceChina Henan Key Laboratory of Cerebrovascular Diseases The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhouHenan ProvinceChina Institute of Neuroscience Zhengzhou UniversityZhengzhouHenan ProvinceChina Sino-British Research Centre for Molecular Oncology National Centre for International Research in Cell and Gene TherapySchool of Basic Medical SciencesAcademy of Medical SciencesZhengzhou UniversityZhengzhouHenan ProvinceChina Department of Gerontology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhouHenan ProvinceChina

The E3 ubiquitin ligase,carboxyl terminus of heat shock protein 70(Hsp70)interacting protein(CHIP),also functions as a co-chaperone and plays a crucial role in the protein quality control *** this study,we aimed to investigate the neuroprotective effect of overexpressed CHIP on Alzheimer’s *** used an adeno-associated virus vector that can cross the blood-brain barrier to mediate CHIP overexpression in APP/PS1 mouse *** overexpression significantly ameliorated the performance of APP/PS1 mice in the Morris water maze and nest building tests,reduced amyloid-βplaques,and decreased the expression of both amyloid-βand phosphorylated *** also alleviated the concentration of microglia and astrocytes around *** APP/PS1 mice of a younger age,CHIP overexpression promoted an increase in ADAM10 expression and inhibitedβ-site APP cleaving enzyme 1,insulin degrading enzyme,and neprilysin *** of HSP70 and HSP40,which have functional relevance to CHIP,were also *** nuclei transcriptome sequencing in the hippocampus of CHIP overexpressed mice showed that the lysosomal pathway and oligodendrocyte-related biological processes were up-regulated,which may also reflect a potential mechanism for the neuroprotective effect of *** research shows that CHIP effectively reduces the behavior and pathological manifestations of APP/PS1 ***,overexpression of CHIP could be a beneficial approach for the treatment of Alzheimer’s disease.

关键词： adeno-associated virus Alzheimer’s disease APP/PS1 mice carboxyl terminus of Hsp70 interacting protein gene therapy

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PVC-U管材共用挤出机头设计与分析

工程塑料应用 2022年第2期50卷 106-111页

作者：张王康于玉真荆孟杰陈远晟张长森盐城工学院机械工程学院江苏盐城224051

为了生产不同直径的管材可以使用相同的挤出机头,减少机头的制造成本和生产周期,通过对硬质聚氯乙烯(PVC-U)材料的特性、机头的结构参数等进行分析的基础上,设计了一款压缩模座弧形过渡的PVC-U管材共用挤出机头。采用ANSYS FLUENT软件... 详细信息

为了生产不同直径的管材可以使用相同的挤出机头,减少机头的制造成本和生产周期,通过对硬质聚氯乙烯(PVC-U)材料的特性、机头的结构参数等进行分析的基础上,设计了一款压缩模座弧形过渡的PVC-U管材共用挤出机头。采用ANSYS FLUENT软件对机头流道进行了数值模拟,并利用CFD-POST对流场的压力、速度和壁面剪切应力分布等进行分析。结果表明,管材共用挤出机头的压缩模座采用弧形过渡后,流道成型段压力、速度分布没有明显的波动,熔体流动性较好。内外壁面剪切应力相差0.004 MPa,且熔体在成型段壁面剪切速率更高,不易发生粘滞,生产的制品更密实,表面质量更高,更符合实际生产的需求。

关键词：硬质聚氯乙烯管材挤出共用挤出机头弧形过渡数值模拟

Test of a model coupling of electromagnetic and gravitational fields by using high-frequency gravitational waves

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Science China(Physics,Mechanics & Astronomy) 2021年第5期64卷 22-27页

作者： Yinhua Zou mengjie Wang Jiliang jing Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China

Models of the coupling of electromagnetic and gravitational fields have been studied extensively for many years. In this paper,we consider the coupling between the Maxwell field and the Weyl tensor of the gravitational field to study how the wavevector of the electromagnetic wave is affected by a plane gravitational wave. We find that the wavevector depends upon the frequency and direction of polarization of the electromagnetic waves, the parameter that couples the Maxwell field and the Weyl tensor, and the angle between the direction of propagation of the electromagnetic wave and the coordinate axis. The results show that this coupling model can be tested by the detection of high-frequency gravitational waves.

关键词： modified theory gravitational wave wave vector

Quasinormal modes and late time tails of perturbation fields on a Schwarzschild-like black hole with a global monopole in the Einstein-bumblebee theory

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Science China(Physics,Mechanics & Astronomy) 2023年第10期66卷 33-43页

作者： Xiaolin Zhang mengjie Wang Jiliang jing School of Physics and Electronics Synergetic Innovation Center for Quantum Effects and Applicationsand Institute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

In this paper we complete a systematic study on quasinormal modes(QNMs) and late time tails for scalar,Dirac and Maxwell fields on a spherically symmetric Schwarzschild-like black hole with a global monopole in the Einstein-bumblebee *** look for QNMs,we solve the equations of motion for all perturbation fields considered herein numerically,by employing both the matrix and the WKB methods,and find good agreements for numeric data obtained by these two techniques in the regime when both are *** impact of the bumblebee parameter c,the monopole parameter η^(2),and the multipole number l on the fundamental quasinormal frequency are analyzed in *** results are shown in terms of the quasinormal frequency measured by √1+c M ,where M is a black hole mass *** observe,by increasing the parameter c(η^(2)) with fixed first few l,that the real part of QNMs increases for all spin fields;while the magnitude of the imaginary part decreases for scalar and Dirac fields but increases for Maxwell *** increasing the multipole numberlwith fixed other parameters,we disclose that the real part of QNMs for all spin fields increases while the magnitude of the imaginary part decreases for scalar and Dirac fields but increases for Maxwell *** the eikonal limit(l>>n),QNMs for all spin fields coincide with each other and the real part scale linearly with *** particular,the asymptotic QNMs approach the corresponding results given by the first order WKB formula,and only the real part of QNMs is dependent on the bumblebee and monopole *** addition,it is shown that the late time behavior is determined not only by the multipole number but also by the bumblebee and monopole parameters,and is distinct for bosonic and fermonic ***,the presence of the bumblebee(monopole) field makes the spin fields decay *** results indicate,both in the context of QNMs and late time tails,that the bumblebee field and the monopole field play the same ro

关键词： Einstein-bumblebee theory perturbation fields dynamic evolution

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西藏原始墨脱冷杉林微气候特征

高原科学研究 2024年第1期8卷 18-28页

作者：景梦洁赵旺林刘新圣张林安徽师范大学地理与旅游学院安徽芜湖241002 中国科学院青藏高原研究所北京100101 西藏自治区高原生物研究所生物资源与生物安全重点实验室西藏拉萨850000

受印度洋暖湿气流的影响,墨脱高海拔地带分布了大量的以墨脱冷杉(Abies delavayi ***)为主的原始湿润森林,开展森林微气候研究能够为高寒生态脆弱区的植被保护和生态建设提供理论依据。文章基于2020年墨脱喜荣沟(海拔2700 m)原始冷杉林... 详细信息

受印度洋暖湿气流的影响,墨脱高海拔地带分布了大量的以墨脱冷杉(Abies delavayi ***)为主的原始湿润森林,开展森林微气候研究能够为高寒生态脆弱区的植被保护和生态建设提供理论依据。文章基于2020年墨脱喜荣沟(海拔2700 m)原始冷杉林林内外的微气候监测数据,对比分析了林内与林外温度、湿度及不同深度土壤温度的季节变化特征,探讨了植物的生长季长度及生长季期间的低温事件发生情况。结果表明:(1)气温日变化特征显示,林内日间气温比林外低0.2∼2.7℃,森林表现出降温作用;除夏季外,其他季节林内夜间气温比林外均高0.2∼1.2℃,森林表现出保温作用;从季节变化看,林内外气温最高值出现在8月,最低值在1月,但林内气温较林外更加稳定;(2)该区域相对湿度较高(>80%),且在不同季节均表现为林内>林外;(3)除冬季外,土壤温度日变化总体呈现与气温类似的日动态,但土壤温度明显滞后约2∼3 h,林内土壤温度总体低于林外;春夏两季不同深度的土壤温度表现为5cm>10cm>20cm,而秋冬两季越靠近地表土壤温度则越低;(4)基于气温定义的生长季长度为208天,明显低于基于土壤温度定义的生长季长度(256∼268天);(5)2020年,冷杉林内低温事件发生的频率、强度及持续时间分别为1 d、-0.03℃和1 h,分别比林外少(低)了6 d、0.86℃和7 h。上述研究表明,原始墨脱冷杉林具有明显的保温和缓冲低温事件影响的作用,因此在未来亚高山天然林的保护和管理中应加强对森林微气候的观测和研究,不断提升天然林对气候变化的潜在应对能力。

关键词：低温事件气温土壤温度墨脱冷杉林生长季长度

New self-consistent effective one-body theory for spinless binaries based on the post-Minkowskian approximation

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Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 38-44页

作者： Jiliang jing Sheng Long Weike Deng mengjie Wang Jieci Wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

The effective one-body theories, introduced by Buonanno and Damour, are novel approaches to constructing a gravitational waveform template. By taking a gauge in which ψ_(1)^(B) and ψ_(3)^(B) vanish, we find a decoupled equation with separable variables for ψ_(4)^(B) in the effective metric obtained in the post-Minkowskian approximation. Furthermore, we set up a new self-consistent effective one-body theory for spinless binaries, which can be applicable to any post-Minkowskian orders. This theory not only releases the assumption that v/c should be a small quantity but also resolves the contradiction that the Hamiltonian, radiation-reaction force, and waveform are constructed from different physical models in the effective one-body theory with the post-Newtonian approximation. Compared with our previous theory [Sci. China-Phys. Mech. Astron. 65, 260411(2022)], the computational effort for the radiation-reaction force and waveform in this new theory will be tremendously reduced.

关键词： Hamilton equations coalescing compact object binary system self-consistent effective one-body theory

Self-consistent effective-one-body theory for spinless binaries based on post-Minkowskian approximation I:Hamiltonian and decoupled equation forψ^(B)_(4)

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Science China(Physics,Mechanics & Astronomy) 2022年第6期65卷 53-59页

作者： Jiliang jing Shuai Chen Manman Sun Xiaokai He mengjie Wang Jieci Wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of EducationSynergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China School of Mathematics and Statistics Hunan First Normal UniversityChangsha 410205China

To build a self-consistent effective-one-body(EOB)theory,in which the Hamiltonian,radiation-reaction force and waveform for the“plus”and“cross”modes of the gravitational wave should be based on the same effective background spacetime,the key step is to look for the decoupled equation forψ^(B)_(4)=h_(+)−ih_(×),which seems a very difficult task because there are non-vanishing tetrad components of the tracefree Ricci tensor for such ***,based on an effective spacetime obtained in this paper by using the post-Minkowskian(PM)approximation,we find the decoupled equation forψ^(B)_(4)by dividing the perturbation part of the metric into the odd and even *** the effective metric and decoupled equation at hand,we set up a frame of self-consistent EOB model for spinless binaries.

关键词： post-Minkowskian approximation effective-one-body theory decoupled equation forψ^(B)_(4)

Holographic insulator/superconductor phase transitions with excited states

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Science China(Physics,Mechanics & Astronomy) 2021年第4期64卷 67-80页

作者： Liang OuYang Dong Wang XiongYing Qiao mengjie Wang QiYuan Pan JiLiang jing Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education Synergetic Innovation Center for Quantum Effects and Applicationsand Department of PhysicsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

We construct a family of solutions of the holographic insulator/superconductor phase transitions with the excited states in the AdS soliton background by using both the numerical and analytical methods. The interesting point is that the improved SturmLiouville method can not only analytically investigate the properties of the phase transition with the excited states, but also the distributions of the condensed fields in the vicinity of the critical point. We observe that, regardless of the type of the holographic model, the excited state has a higher critical chemical potential than the corresponding ground state, and the difference of the dimensionless critical chemical potential between the consecutive states is around 2.4, which is different from the finding of the metal/superconductor phase transition in the Ad S black hole background. Furthermore, near the critical point, we find that the phase transition of the systems is of the second order and a linear relationship exists between the charge density and chemical potential for all the excited states in both s-wave and p-wave insulator/superconductor models.

关键词： AdS/CFT correspondence excited states insulator/superconductor phase transitions