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  1. Article ; Online: Design of Fuzzy State Observer and Mobile Sensor Guidance for Semilinear Parabolic PDE Systems.

    Wu, Huai-Ning / Zhang, Xiao-Wei

    IEEE transactions on cybernetics

    2022  Volume 52, Issue 1, Page(s) 522–530

    Abstract: This article investigates the issue of the fuzzy observer design for the semilinear parabolic partial differential equation (PDE) systems with mobile sensing measurements. Initially, we employ a Takagi-Sugeno (T-S) fuzzy PDE model to represent the ... ...

    Abstract This article investigates the issue of the fuzzy observer design for the semilinear parabolic partial differential equation (PDE) systems with mobile sensing measurements. Initially, we employ a Takagi-Sugeno (T-S) fuzzy PDE model to represent the semilinear parabolic PDE system accurately in a local region. Afterward, via the T-S fuzzy model and under the hypothesis that the spatial domain is divided by several subdomains in the light of the number of sensors, a state observation scheme which contains a fuzzy observer and the mobile sensor guidance is proposed. Then, by means of the Lyapunov direct method and integral inequalities, a design method of the fuzzy observer and mobile sensor guidance is provided to render the resulting state estimation error system exponentially stable, while the designed mobile sensor guidance can increase the exponential decay rate. Finally, numerical simulations are presented to show that the proposed fuzzy observer design approach is effective and the employment of mobile sensors contributes to improving the response speed of the state estimation error in comparison with the static ones.
    MeSH term(s) Algorithms ; Computer Simulation ; Fuzzy Logic
    Language English
    Publishing date 2022-01-11
    Publishing country United States
    Document type Journal Article
    ISSN 2168-2275
    ISSN (online) 2168-2275
    DOI 10.1109/TCYB.2020.2980874
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Fuzzy Control Design of Nonlinear Time-Delay Parabolic PDE Systems Under Mobile Collocated Actuators and Sensors.

    Zhang, Xiao-Wei / Wu, Huai-Ning

    IEEE transactions on cybernetics

    2022  Volume 52, Issue 5, Page(s) 3947–3956

    Abstract: Via mobile sensing measurements, this study applies the Takagi-Sugeno (T-S) fuzzy model to deal with the mobile fuzzy control design problem for nonlinear time-delay parabolic partial differential equation (PDE) systems. Initially, we use a T-S fuzzy ... ...

    Abstract Via mobile sensing measurements, this study applies the Takagi-Sugeno (T-S) fuzzy model to deal with the mobile fuzzy control design problem for nonlinear time-delay parabolic partial differential equation (PDE) systems. Initially, we use a T-S fuzzy model to accurately represent the nonlinear time-delay parabolic PDE system. Subsequently, under the assumption that the actuators and sensors are collocated while the spatial domain is divided by several subdomains, a control scheme containing the fuzzy controllers and the guidance of mobile actuator/sensor pairs is proposed based on the obtained T-S fuzzy model, where the projection modification guidance to be designed can guarantee that each mobile actuator/sensor pair moves within the prescribed area. Then, using the Lyapunov direct method and integral inequalities, a membership-function-dependent design of fuzzy controllers plus mobile actuator/sensor guidance laws is developed to render the resulting closed-loop time-delay system exponentially stable. Moreover, the exponential decay rate can also be increased by the proposed mobile guidance laws. Finally, numerical simulations are presented to illustrate the effectiveness of the proposed design method and the application of mobile actuator/sensor pairs contributes to accelerating the convergence speed of the closed-loop state.
    Language English
    Publishing date 2022-05-19
    Publishing country United States
    Document type Journal Article
    ISSN 2168-2275
    ISSN (online) 2168-2275
    DOI 10.1109/TCYB.2020.3020087
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Ab initio

    Zhang, Xiao-Wei / Cao, Ting

    Journal of physics. Condensed matter : an Institute of Physics journal

    2022  Volume 34, Issue 26

    Abstract: We investigate the spin-nonconserving relaxation channel of excitons by their couplings with phonons in two-dimensional transition metal dichalcogenides ... ...

    Abstract We investigate the spin-nonconserving relaxation channel of excitons by their couplings with phonons in two-dimensional transition metal dichalcogenides using
    Language English
    Publishing date 2022-04-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/ac6649
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Gate-Tunable Antiferromagnetic Chern Insulator in Twisted Bilayer Transition Metal Dichalcogenides.

    Liu, Xiaoyu / He, Yuchi / Wang, Chong / Zhang, Xiao-Wei / Cao, Ting / Xiao, Di

    Physical review letters

    2024  Volume 132, Issue 14, Page(s) 146401

    Abstract: A series of recent experimental works on twisted MoTe_{2} homobilayers have unveiled an abundance of exotic states in this system. Valley-polarized quantum anomalous Hall states have been identified at hole doping of ν=-1, and the fractional quantum ... ...

    Abstract A series of recent experimental works on twisted MoTe_{2} homobilayers have unveiled an abundance of exotic states in this system. Valley-polarized quantum anomalous Hall states have been identified at hole doping of ν=-1, and the fractional quantum anomalous Hall effect is observed at ν=-2/3 and ν=-3/5. In this Letter, we investigate the electronic properties of AA-stacked twisted bilayer MoTe_{2} at ν=-2 by k-space Hartree-Fock calculations. We identify a series of phases, among which a noteworthy phase is the antiferromagnetic Chern insulator, stabilized by an external electric field. We attribute the existence of this Chern insulator to an antiferromagnetic instability at a topological phase transition between the quantum spin hall phase and a band insulator phase. Our research proposes the potential of realizing a Chern insulator beyond ν=-1, and contributes fresh perspectives on the interplay between band topology and electron-electron correlations in moiré superlattices.
    Language English
    Publishing date 2024-04-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.146401
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

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  5. Book ; Thesis: Role of adhesion molecules and chemokines in tumor necrosis factor-alpha-induced leukocyte recruitment

    Zhang, Xiao Wei

    2001  

    Author's details by Xiao Wei Zhang
    Language English ; Swedish
    Size Getr. Zählung : graph. Darst.
    Publishing country Sweden
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Lund, Univ., Diss., 2001
    Note Zsfassung in schwed. Sprache
    HBZ-ID HT013224982
    ISBN 91-89625-00-5 ; 978-91-89625-00-6
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2002 E 29 order for loan Magazin

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  6. Article: The development of visual aesthetic sensitivity in students in China.

    Zhang, Ju / Du, Xu / Zhang, XiaoWei / Bai, XueJun

    Frontiers in psychology

    2023  Volume 14, Page(s) 1071487

    Abstract: To examine the development of visual aesthetic sensitivity in students in China, 2,387 students from age 9 to age 22 (excluding ages 16-17) were tested by the Visual aesthetic Sensitivity Test-Revised. The development of visual aesthetic sensitivity ... ...

    Abstract To examine the development of visual aesthetic sensitivity in students in China, 2,387 students from age 9 to age 22 (excluding ages 16-17) were tested by the Visual aesthetic Sensitivity Test-Revised. The development of visual aesthetic sensitivity across ages and genders, and the effect of artistic training on students' visual aesthetic sensitivity were examined. The data of primary school and junior middle school students were collected by paper tests completed collectively in class, while the data of university students were collected by distributing and collecting online. Result suggests that students' visual aesthetic sensitivity is relatively stable from age 9 to age 12 and increases at age 13. The visual aesthetic sensitivity of girls is significantly better than that of boys at age 15, 19, and 20 years of age. This study also found that artistic training improves students' visual aesthetic sensitivity.
    Language English
    Publishing date 2023-02-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2023.1071487
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Engineering Magnetic Phases of Layered Antiferromagnets by Interfacial Charge Transfer.

    Xie, Kaichen / Zhang, Xiao-Wei / Xiao, Di / Cao, Ting

    ACS nano

    2023  Volume 17, Issue 22, Page(s) 22684–22690

    Abstract: Van der Waals heterostructures composed of distinct layered materials can display behaviors entirely different from those of each individual layer due to interfacial coupling. Here we investigate the manipulation of magnetic phases in two-dimensional ... ...

    Abstract Van der Waals heterostructures composed of distinct layered materials can display behaviors entirely different from those of each individual layer due to interfacial coupling. Here we investigate the manipulation of magnetic phases in two-dimensional magnets through interfacial charge transfer in heterostructures of magnetic and nonmagnetic layers. This is demonstrated by first-principles calculations, which unveil a transition toward the ferromagnetic phase by stacking antiferromagnetic bilayer CrSBr on graphene. Using an effective model consisting of two electronically coupled single layers, we show that the antiferromagnetic to ferromagnetic magnetic phase transition occurs due to interfacial charge transfer, which enhances ferromagnetism. We further reveal that the magnetic phase transition can also be induced by electron and hole carriers and demonstrate that the phase transition is a spin-canting process. This allows for precise gate-control of noncollinear magnetism on demand. Our work predicts interfacial charge transfer as a potent mechanism to tune magnetic phases in van der Waals heterostructures and creates opportunities for spintronic applications.
    Language English
    Publishing date 2023-11-14
    Publishing country United States
    Document type Journal Article
    ISSN 1936-086X
    ISSN (online) 1936-086X
    DOI 10.1021/acsnano.3c07125
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: An early gall-inducing parasitic wasp adversely affects the fitness of its host Ficus tree but not the pollinator.

    Zhang, Xiao-Wei / Li, Liang-Heng

    Scientific reports

    2020  Volume 10, Issue 1, Page(s) 14941

    Abstract: The fig tree-fig pollinator mutualism is one of the most tightly knit symbiotic systems. The research on the ecology of non-pollinators which exploit the mutualism without providing services to the host is very limited and conclusions about the role they ...

    Abstract The fig tree-fig pollinator mutualism is one of the most tightly knit symbiotic systems. The research on the ecology of non-pollinators which exploit the mutualism without providing services to the host is very limited and conclusions about the role they play in the maintenance of this mutualism are full of contradictions. The non-pollinating fig wasps species are highly diverse in their feeding habit and ecological function, which may result in different consequences on the mutualism. Sycophaga testacea is an early-ovipositing galler hosted by Ficus racemosa, which is a potencial competitor to the pollinators as they use the same female flowers in the fig as their ovipositing sites. In this study, we investigate the effect of S. testacea on the production of both pollinator and fig tree with a field control experiment. Seed production is decreased significantly when the figs were parasitized, while the offspring production of the pollinator is not significantly affected, which indicates that this galler species has a harmful effect on the fitness of its host fig tree but not the pollinator. The overall development ratio of the galls is decreased significantly when the figs were parasitized, and we found that the intrinsic low development ratio of S. testacea is responsible for the decrease in the overall development ratio.
    MeSH term(s) Animals ; Ficus/parasitology ; Ficus/physiology ; Host-Parasite Interactions ; Oviposition ; Pollination ; Symbiosis ; Trees/parasitology ; Trees/physiology ; Wasps/physiology
    Language English
    Publishing date 2020-09-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-71738-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Command and control method review in information age

    HUANG Qian, CHEN Min, LI Kan, ZHANG Xiao-wei, DONG Shi

    Zhihui kongzhi yu fangzhen, Vol 45, Iss 1, Pp 46-

    2023  Volume 50

    Abstract: The command control (C2) is the most important part of the war for all dynasties. In information age, the future battlefield poses new challenges for C2. By analyzing the characteristics of network enabled command and control in the information age, this ...

    Abstract The command control (C2) is the most important part of the war for all dynasties. In information age, the future battlefield poses new challenges for C2. By analyzing the characteristics of network enabled command and control in the information age, this paper studies the C2 function and approach space, defines five C2 archetype, discriminates in detail the objectives and requirements of each archetype, analyzes its maturity level and maturity migration model, and finally discusses the challenges to C2 in the future battlefield. It is important to help the combatant analyze the problems existing in current C2, to improve the C2 ability of the current and future, to improve the control of the commanders, and to improve the manage ability of complex, dynamic and uncertain combat missions.
    Keywords command and control (c2)|c2 approach space|c2 approach archetype|c2 maturity model ; Military Science ; U
    Language Chinese
    Publishing date 2023-02-01T00:00:00Z
    Publisher Editorial Office of Command Control and Simulation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: How to promote terrestrial herbivores' conservation in areas where small-scale agriculturalists set up fences − An analysis based on evolutionary game theory

    Zhang, Xiao-Wei / Wang, Lin / Zhao, Na / Dunn, Derek W. / Yu, Xiaoping / Ye, Xinping

    Global Ecology and Conservation. 2023 June, v. 43 p.e02457-

    2023  

    Abstract: Habitats of large herbivores have shrunk owing to the expansion of human activities. Consequently, wild herbivores frequently venture into adjacent farmlands to forage for crops. As a result, farmers use fences to prevent these herbivores from foraging. ... ...

    Abstract Habitats of large herbivores have shrunk owing to the expansion of human activities. Consequently, wild herbivores frequently venture into adjacent farmlands to forage for crops. As a result, farmers use fences to prevent these herbivores from foraging. A dynamic game exists between whether farmers choose to set up fences and whether herbivores choose to venture into farmlands. This study established an evolutionary game model between farmers and herbivorous species. The effects of different factors on the game process were studied using model simulations to provide theoretical guidance for the conservation and management of herbivore species. Model simulations showed that food resources in herbivore habitats are key to protecting their populations. Therefore, management needs to restore and protect herbivore habitats, and in cases of extreme food shortages, herbivores should be artificially fed. Simultaneously, herbivores need to obtain certain food supplements from outside their habitats when food resources are scarce. Therefore, subsidies should be provided to farmers close to herbivore habitats to encourage them to use fences that allow a certain number of herbivores to pass through. In addition, increasing the buffer zone between herbivore habitats and farmland has positive implications for the conservation of large herbivore populations.
    Keywords agricultural land ; game theory ; herbivores ; humans ; models ; Farmer-large herbivore conflict ; Evolutionary game ; Fencing ; Food scarcity ; Conservation
    Language English
    Dates of publication 2023-06
    Publishing place Elsevier B.V.
    Document type Article ; Online
    Note Use and reproduction
    ZDB-ID 2814786-8
    ISSN 2351-9894
    ISSN 2351-9894
    DOI 10.1016/j.gecco.2023.e02457
    Database NAL-Catalogue (AGRICOLA)

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