Results 21 to 30 of about 798,063 (159)
Modeling and Analysis of Dynamic Social Ties in D2D Collaborative Video Transmission
Discrete Dynamics in Nature and Society, Volume 2020, Issue 1, 2020., 2020 Social networks are one of the main carriers of information diffusion. Changes in social ties will affect the quality of Device‐to‐Device (D2D) communications especially the video transmission. For further improving the communication utility of users, it is of great significance to effectively integrate D2D communications and social networks.
Qi Zhang +4 more
wiley +1 more source
Shuitu Baochi Xuebao目的为明确三峡库区单次水文调度周期内新增污染指纹，精准解析不同水动力条件下重金属的来源与驱动机制。方法在三峡库区典型干支流消落带（石宝寨、郭家坝、香溪河），利用原位沉积柱采集了完整水文周期的净沉积泥沙，结合潜在生态风险指数（PERI）、典范对应分析（CCA）及正定矩阵因子模型（PMF），系统解析了重金属（As、Cd、Cr、Cu、Mn、Ni、Pb、Zn）的污染特征、来源及环境驱动机制。结果1）污染特征：Cd是首要污染因子，平均含量显著高于库区背景值。库中的生态风险等级显著高于库首，且高风险热区为深层淹水区（
盛佳妮 +5 more
doaj +3 more sources
Complexity, Volume 2020, Issue 1, 2020., 2020 This paper investigates the observer‐based structural balance control for a class of complex dynamical networks. Generally speaking, a complete complex dynamical network is composed of two coupled subsystems, which are called node subsystem (NS) and connection relationship subsystem (CS), respectively.
Zilin Gao +5 more
wiley +1 more source
Adaptive State Observer Design for Dynamic Links in Complex Dynamical Networks
Computational Intelligence and Neuroscience, Volume 2020, Issue 1, 2020., 2020 The state observer for dynamic links in complex dynamical networks (CDNs) is investigated by using the adaptive method whether the networks are undirected or directed. In this paper, a complete network model is proposed, which is composed of two coupled subsystems called nodes subsystem and links subsystem, respectively.
Zilin Gao +5 more
wiley +1 more source
Exploring the Dynamical Behavior of Information Diffusion in D2D Communication Environment
Security and Communication Networks, Volume 2020, Issue 1, 2020., 2020 This paper is dedicated to exploring the dynamical behavior of information diffusion in the Device‐to‐Device (D2D) communication environment for information security, so as to study how to accelerate the dissemination of beneficial information and curb the spread of malicious information.
Zufan Zhang +4 more
wiley +1 more source
Journal of Spectroscopy, Volume 2018, Issue 1, 2018., 2018 Quantifying the decomposition of soil organic carbon (SOC) fractions under climate change is essential to predict carbon‐climate feedbacks. The accuracy and utility of a combustion module coupled with cavity ring‐down spectroscopy (CM‐CRDS) system were assessed for simultaneously determining SOC and δ13C‐SOC. Using a range of standard materials as well
Dan Liu +3 more
wiley +1 more source
Stabilization and Synchronization of Memristive Chaotic Circuits by Impulsive Control
Complexity, Volume 2017, Issue 1, 2017., 2017 The purpose of this note is to study impulsive control and synchronization of memristor based chaotic circuits shown by Muthuswamy. We first establish a less conservative sufficient condition for the stability of memristor based chaotic circuits. After that, we discuss the effect of errors on stability.
Limin Zou +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 从社会经济、自然地理等角度对比太湖流域与三峡库区的状况,探讨三峡水库在正式建成后库区非点源污染发生的可能性。研究表明:太湖流域与三峡库区在农业生产环境及农业非点源污染发生条件等方面有相似之处,同时,三峡库区非点源污染物(如泥沙和营养物)的来源也比较丰富,因此可以推断三峡库区存在发生非点源污染的可能。
余炜敏 魏朝富 谢德体
doaj +2 more sources
Nonlinear Elasticity of Borocarbide Superconductor YNi2B2C: A First‐Principles Study
Advances in Materials Science and Engineering, Volume 2017, Issue 1, 2017., 2017 First‐principles calculations combined with homogeneous deformation methods are used to investigate the second‐ and third‐order elastic constants of YNi2B2C with tetragonal structure. The predicted lattice constants and second‐order elastic constants of YNi2B2C agree well with the available data.
Lili Liu +6 more
wiley +1 more source
, 2000 简要论述了长江三峡水库的形态和库区泥沙冲淤特点，重点分析了三峡水利枢纽工程建成后水库蓄水运行过程对库区泥沙淤积的影响，以及新形势下水库运行中需要进一步深入研究的重要问题 ...
李家春, 周济福, 刘青泉
core +2 more sources