Showing 261 - 280 results of 346 for search '"complex dynamics"', query time: 0.07s Refine Results
  1. 261

    Using HBmito Crimson to Observe Mitochondrial Cristae Through STED Microscopy by Xichuan Ge, Wei Ren, Chunyan Shan, Peng Xi, Baoxiang Gao

    Published 2025-01-01
    “…Utilizing the superior resolution of STED microscopy, the structure and complex dynamic changes of cristae can be visualized.…”
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    Article
  2. 262

    Exponential Fields Formulation for WMR Navigation by Edgar A. Martínez-García, Rafael Torres-Cordoba

    Published 2012-01-01
    “…The planning scheme is of critical importance for autonomous navigational tasks in complex dynamic environments. In fast dynamic environments, path planning needs algorithms able to sense simultaneously a diversity of obstacles, and use such sensory information to improve real-time navigation control, while moving towards a desired goal destination. …”
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  3. 263

    Research on the spectrum sensing and sharing technology in the dynamic spatiotemporal data driven cognitive Internet of vehicles by Caili GUO, Jiujiu CHEN, Yidi XUAN, He ZHANG

    Published 2020-09-01
    “…With the explosive development of the intellectualization and network connection of the global automobile industry,the communication technology as a crucial support of the Internet of vehicles (IoV) is facing the problem of spectrum shortage.In addition to providing security services,the diverse service demands of the IoV make the introduction of the cognitive radio technology an effective solution,which can share heterogeneous spectrum resources integrating the sub-6 GHz and millimeter-wave spectrum resources with primary users.But the performance is limited due to the influence of the complex dynamic environment of the IoV.To address this issue,a novelty method was proposed which aimed to make full use of the potential multi-source dynamic spatiotemporal data,mine and learn the changing rules of the vehicle trajectory and traffic flow,and the rules were used to guide the sensing and sharing of the spectrum resource.The system-level simulation platform was built for simulation analysis,the results showed that the performance of the proposed scheme was effectively improved.…”
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  4. 264

    Qualitative Analysis of a Hyperchaotic Lorenz-Stenflo Mathematical Model via the Caputo Fractional Operator by Chernet Tuge Deressa, Sina Etemad, Mohammed K. A. Kaabar, Shahram Rezapour

    Published 2022-01-01
    “…The Lorenz-Stenflo mathematical model describes a complex dynamical behavior related to atmospheric acoustic-gravity waves. …”
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  5. 265

    Autonomous deployment and energy efficiency optimization strategy of UAV based on deep reinforcement learning by Yi ZHOU, Xiaoyong MA, Fuxiao GAO, Wei LI, Nan CHENG, Ning LU

    Published 2019-06-01
    “…Utilizing a UAV to build aerial mobile small cell can provide more flexible and efficient access services for ground terminal users.Constrained by the coverage and limited energy of the UAV,it is necessary to study how to build a fast,efficient and energy-saving air-ground collaborative network.To deal with complex dynamic scenarios,the UAV needs to deploy an optimal coverage position,and meanwhile reduce both path loss and energy consumption in the deployment process.Based on the deep reinforcement learning,a strategy of autonomous UAV deployment and efficiency optimization was proposed.The coverage state set of UAV was established,and the energy efficiency was used as a reward function.Depth neural network and Q-learning were used to guide UAV to make autonomous decision and deploy the optimal position.The simulation results show that the deployment time of the proposed method can be effectively reduced by 60%,while the energy consumption can be reduced by 10%~20%.…”
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  6. 266

    MalSEIRS: Forecasting Malware Spread Based on Compartmental Models in Epidemiology by Isabella Martínez Martínez, Andrés Florián Quitián, Daniel Díaz-López, Pantaleone Nespoli, Félix Gómez Mármol

    Published 2021-01-01
    “…As a result, the time-dependent rates of infection, recovery, and loss of immunity enable us to capture the complex dynamism of malware spreading behavior, which is influenced by a variety of external circumstances. …”
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    Article
  7. 267

    Evaluation of the Pseudostatic Analyses of Earth Dams Using FE Simulation and Observed Earthquake-Induced Deformations: Case Studies of Upper San Fernando and Kitayama Dams by Tohid Akhlaghi, Ali Nikkar

    Published 2014-01-01
    “…Evaluation of the accuracy of the pseudostatic approach is governed by the accuracy with which the simple pseudostatic inertial forces represent the complex dynamic inertial forces that actually exist in an earthquake. …”
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  8. 268

    Dynamics Characteristic Analysis of Sliding Bearing-rigid Rotor System with Flexible Support by Wenbin Wang

    Published 2021-06-01
    “…The results show that the complex dynamic behaviors such as chaos, multi period,almost periodic and single period appear with the increase of rotating speed in the middle and low speed stage, in the middle speed and high speed stage,the system is mainly the mutual transfer of multi period and chaotic motion,and the emergence of paroxysmal chaotic motion. …”
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  9. 269

    Theoretical and Numerical Analysis of Coupled Axial-Torsional Nonlinear Vibration of Drill Strings by Xinye Li, Tao Yu, Lijuan Zhang, Hao Zeng, Congcong Duan

    Published 2021-01-01
    “…The variation of parameters may lead to the complex dynamic behavior of the system, such as period-doubling motion, quasiperiodic motion, and chaos. …”
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  10. 270

    Democracy, Authoritarianism, and Policy Punctuations by Bryan D. Jones, Derek A. Epp, Frank R. Baumgartner

    Published 2019-06-01
    “…The key to policy success for all these and other issues is adaptive policymaking in complex, dynamic environments. Relying on theory and empirical tests from policy process studies, we focus on extreme policy punctuations as indicators of maladaptive policymaking. …”
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  11. 271

    Criterion for Unbounded Synchronous Region in Complex Networks by Jin Zhou

    Published 2013-01-01
    “…In this paper, we investigate a sufficient condition for a general complex dynamical network in the absence of control. A main result is that, when the coupling strength is sufficiently strong, the dynamical network achieves synchronization provided that the symmetric part of the inner-coupling matrix is positive definite. …”
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  12. 272

    Mathematical assessment of the role of temperature on desert locust population dynamics. by Dejen Ketema Mamo, Mathew N Kinyanjui, Nourridine Siewe

    Published 2025-01-01
    “…Theoretical analysis reveals the model's capacity for complex dynamical behaviors, such as multiple stable states and backward bifurcations, suggesting the potential for sudden and unpredictable population shifts. …”
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  13. 273

    Local System Matrix Compression for Efficient Reconstruction in Magnetic Particle Imaging by T. Knopp, A. Weber

    Published 2015-01-01
    “…For reconstructing a spatial map of the particle distribution, the system matrix describing the magnetic particle imaging equation has to be known. Due to the complex dynamic behavior of the magnetic particles, the system matrix is commonly measured in a calibration procedure. …”
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  14. 274

    The online destination image as portrayed by the user-generated content on social media and its impact on tourists' engagement by Manuela Guerreiro, Patrícia Pinto, Célia M.Q. Ramos, Nelson Matos, Homayoun Golestaneh, Bernardete Sequeira, Luís Nobre Pereira, Dora Agapito, Rafaela Martins, Magda Wijkesjö

    Published 2024-10-01
    “…Tourism Destination Image (TDI) is complex, dynamic and multidimensional by nature and shaped by a multitude of events, interactions and sensory impressions, especially once the tourist is at the destination, generating tourists' engagement on social media networks. …”
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  15. 275

    Meteorological Data-Based Optimal Control Strategy for Microalgae Cultivation in Open Pond Systems by Riccardo De-Luca, Fabrizio Bezzo, Quentin Béchet, Olivier Bernard

    Published 2019-01-01
    “…Outdoor biofuel production from microalgae is a complex dynamical process submitted to climatic variations. …”
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  16. 276

    Quadcopter Trajectory Tracking Based on Model Predictive Path Integral Control and Neural Network by Yong Li, Qidan Zhu, Ahsan Elahi

    Published 2024-12-01
    “…This paper aims to address the trajectory tracking problem of quadrotors under complex dynamic environments and significant fluctuations in system states. …”
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  17. 277

    Bifurcation Analysis of a Discrete Basener–Ross Population Model: Exploring Multiple Scenarios by A. A. Elsadany, A. M. Yousef, S. A. Ghazwani, A. S. Zaki

    Published 2025-01-01
    “…Furthermore, we demonstrated the existence of codimension-two bifurcations characterized by 1:2, 1:3, and 1:4 resonances, emphasizing the model’s complex dynamical structure. Numerical simulations are employed to validate and illustrate the theoretical predictions. …”
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  18. 278

    Adaptive coordinated control for an under-actuated airplane–tractor system with parameter uncertainties by Pengjie Xu, Weining Huang, Tianrui Zhao, Wei Zhang, Tongwei Lu, Guiyan Qiang, Lin Zhang, Yanzheng Zhao

    Published 2025-02-01
    “…The coupled system composed of an airplane and a tractor has complex dynamical and highly under-actuated characteristics. …”
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  19. 279

    Fast analytical calculation-based modeling method and fault ride-through parameters selection to enhance short-term voltage stability of grids with large-scale photovoltaic power p... by Boyang Li, Shiyun Xu, Weixing Li, Pupu Chao, Xiaodong Liang, Zhimin Li

    Published 2025-03-01
    “…However, analyzing and optimizing short-term voltage characteristics requires extensive time-consuming simulations due to complex dynamic interactions between the grid voltage and FRT behaviors of PVPPs. …”
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  20. 280

    Design of an Error-Based Adaptive Controller for a Flexible Robot Arm Using Dynamic Pole Motion Approach by Ki-Young Song, Madan M. Gupta, Noriyasu Homma

    Published 2011-01-01
    “…Design of an adaptive controller for complex dynamic systems is a big challenge faced by the researchers. …”
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