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Lei Liu [19]Leipo Liu [1]
  1.  8
    Relationship of Physical Activity With Anxiety and Depression Symptoms in Chinese College Students During the COVID-19 Outbreak.Ming-Qiang Xiang, Xian-Ming Tan, Jian Sun, Hai-Yan Yang, Xue-Ping Zhao, Lei Liu, Xiao-Hui Hou & Min Hu - 2020 - Frontiers in Psychology 11.
    IntroductionDuring the COVID-19 outbreak, many citizens were asked to stay at home in self-quarantine, which can pose a significant challenge with respect to remaining physically active and maintaining mental health. This study aimed to evaluate the prevalence of inadequate physical activity, anxiety, and depression and to explore the relationship of physical activity with anxiety and depression symptoms among Chinese college students during quarantine.MethodUsing a web-based cross-sectional survey, we collected data from 1,396 Chinese college students. Anxiety and depression were assessed with (...)
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  2.  26
    Legendre Cooperative PSO Strategies for Trajectory Optimization.Lei Liu, Yongji Wang, Fuqiang Xie & Jiashi Gao - 2018 - Complexity 2018:1-13.
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  3.  11
    Improved Hybrid Fireworks Algorithm-Based Parameter Optimization in High-Order Sliding Mode Control of Hypersonic Vehicles.Xiaomeng Yin, Xing Wei, Lei Liu & Yongji Wang - 2018 - Complexity 2018:1-16.
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  4.  15
    The Effects of Different Stages of Mindfulness Meditation Training on Emotion Regulation.Qin Zhang, Zheng Wang, Xinqiang Wang, Lei Liu, Jing Zhang & Renlai Zhou - 2019 - Frontiers in Human Neuroscience 13.
  5.  2
    Fixed-Time Convergent Guidance Law with Impact Angle Control.Zhongtao Cheng, Hao Wu, Bo Wang, Lei Liu & Yongji Wang - 2020 - Complexity 2020:1-9.
    The existing convergence control guidance laws are designed via the Lyapunov asymptotic stability theory or finite-time stability theory. However, guidance law based on the Lyapunov asymptotic stability theory would lead the states to zero only as time approaches infinity, which is imperfect theory. The convergence time for guidance laws based on finite-time stable theory is dependent on the initial states. A fixed-time convergent guidance law with impact angle control is proposed in this paper. The proposed guidance law consists of two (...)
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  6.  7
    Temporal Features of Psychological and Physical Self-Representation: An ERP Study.Lei Liu, Wenjie Li, Jin Li, Lingna Lou & Jie Chen - 2019 - Frontiers in Psychology 10.
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  7.  10
    Integrated Estimation/Guidance Law Against Exoatmospheric Maneuvering Targets.Mao Su, Lei Liu & Yongji Wang - 2018 - Complexity 2018:1-19.
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  8.  24
    The Effect of Preceding Self-Control on Prosocial Behaviors: The Moderating Role of Awe.Jin Li, Anke Li, Yu Sun, Hui’ E. Li, Lei Liu, Youlong Zhan, Wei Fan & Yiping Zhong - 2019 - Frontiers in Psychology 10.
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  9.  27
    Sociality Mental Modes Modulate the Processing of Advice-Giving: An Event-Related Potentials Study.Jin Li, Youlong Zhan, Wei Fan, Lei Liu, Mei Li, Yu Sun & Yiping Zhong - 2018 - Frontiers in Psychology 9.
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  10. The Emotional Mechanisms of Interpersonal Preemptive Behavior.Lei Liu, Xiyan Song & Yu Li - 2022 - Frontiers in Psychology 13.
    Interpersonal preemptive behavior means that a party undertakes a costly action that inflicts harm to another to remove or disable a potential threat. This present study examined the emotional mechanisms underlying interpersonal preemptive behavior. The findings revealed that in interpersonal interaction situations, individuals experienced higher levels of fear and hope when they perceived the potential threat of the gaming partner and were more likely to initiate preemptive behavior; fear and hope both mediated the relationship between potential threat and preemptive behavior, (...)
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  11.  5
    Dispositional Self-Construal Modulates the Empathy for Others’ Pain: An ERP Study.Jie Chen, Bijia Chang, Wenjie Li, Yupeng Shi, Haizhou Shen, Rong Wang & Lei Liu - 2020 - Frontiers in Psychology 11.
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  12.  11
    A Multiscale Differential Evolution Algorithm-Based Maintenance Plan Optimization for Building Energy Retrofitting.Bo Wang, Zhou Wu & Lei Liu - 2018 - Complexity 2018:1-12.
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  13.  1
    Caring for Psychological Distress of Patients With COVID-19: A Mixed-Method Cross-Sectional Study.Juan Li, Anni Wang, Lei Liu, Xue Chen & Xiaoling Bai - 2022 - Frontiers in Psychology 13.
    IntroductionThe 2019–2020 pandemic COVID-19 has become a global health crisis. While many recent studies on COVID-19 pandemic have focused on disease epidemiology and psychological status of patients, few have explored the multi-facet influential factors or combined perspectives from both the patients and healthcare workers. The purposes of this study were to: analyze the influencing factors of psychological distress of COVID-19 patients; and describe the experience of healthcare workers relieving psychological distress.Materials and MethodsThis study uses a mixed-method cross-sectional design, including a (...)
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  14.  4
    Attitude Control with Auxiliary Structure Based on Adaptive Dynamic Programming for Reentry Vehicles.Xu Li, Zhongtao Cheng, Bo Wang, Yongji Wang & Lei Liu - 2020 - Complexity 2020:1-19.
    This paper presents an attitude control scheme combined with adaptive dynamic programming for reentry vehicles with high nonlinearity and disturbances. Firstly, the nonlinear attitude dynamics is divided into inner and outer loops according to the time scale separation and the cascade control principle, and a general sliding mode control method is employed to construct the main controllers for the double loops. Considering the shortage of main controllers in handling nonlinearity and sudden disturbances, an ADP structure is introduced into the outer (...)
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  15.  6
    Guaranteed Cost Finite-Time Control of Discrete-Time Positive Impulsive Switched Systems.Leipo Liu, Hao Xing, Xiangyang Cao, Zhumu Fu & Shuzhong Song - 2018 - Complexity 2018:1-8.
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  16.  3
    Hesitant Bipolar-Valued Fuzzy Soft Sets and Their Application in Decision Making.Jin-Ying Wang, Yan-Ping Wang & Lei Liu - 2020 - Complexity 2020:1-12.
    As an extension of fuzzy sets, hesitant bipolar-valued fuzzy set is a new mathematical tool for dealing with fuzzy problems, but it still has the problem with the inadequacy of the parametric tools. In order to further improve the accuracy of decision making, a new mixed mathematical model, named hesitant bipolar-valued fuzzy soft set, is constructed by combining hesitant bipolar-valued fuzzy sets with soft sets. Firstly, some related theories of hesitant bipolar-valued fuzzy sets are discussed. Secondly, the concept of hesitant (...)
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  17.  2
    The Functional Role of Individual Alpha-Based Frontal Asymmetry in the Processing of Fearful Faces.Lei Liu & Renlai Zhou - 2020 - Frontiers in Psychology 11.
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  18.  5
    Feature Selection Using Mutual Information: An Experimental Study.Huawen Liu, Lei Liu & Huijie Zhang - 2008 - In Tu-Bao Ho & Zhi-Hua Zhou (eds.), Pricai 2008: Trends in Artificial Intelligence. Springer. pp. 235--246.
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  19.  1
    Trajectory Tracking Control in Real-Time of Dual-Motor-Driven Driverless Racing Car Based on Optimal Control Theory and Fuzzy Logic Method.Gang Li, Sucai Zhang, Lei Liu, Xubin Zhang & Yuming Yin - 2021 - Complexity 2021:1-16.
    To improve the accuracy and timeliness of the trajectory tracking control of the driverless racing car during the race, this paper proposes a track tracking control method that integrates the rear wheel differential drive and the front wheel active steering based on optimal control theory and fuzzy logic method. The model of the lateral track tracking error of the racing car is established. The model is linearized and discretized, and the quadratic optimal steering control problem is constructed. Taking advantage of (...)
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