【摘 要】
:
The optimal exponentials of thickness in the geometry rigidity inequality of shells represent the geometry rigidity of the shells.The author obtains that the lower bounds of the optimal exponentials are 4/3,3/2,and 1,for hyperbolic shells,parabolic shells
【机 构】
:
Key Laboratory of Systems and Control Institute of Systems Science,Academy of Mathematics and System
论文部分内容阅读
The optimal exponentials of thickness in the geometry rigidity inequality of shells represent the geometry rigidity of the shells.The author obtains that the lower bounds of the optimal exponentials are 4/3,3/2,and 1,for hyperbolic shells,parabolic shells,and elliptic shells,respectively,through the construction of the Ans?tze.
其他文献
基于宏基因组物种分类学注释结果,构建了不同形态下活性污泥微生物分子生态网络.结果表明附着生物膜和絮体污泥分子生态网络中模块化数值分别为0.826和0.828;平均聚类系数(avgCC)分别为0.754和0.733;平均路径长度(HD)分别为4.197和4.793;鲁棒性表现分别为0.274和0.297.基于此,该研究得出结论:絮体污泥群落相较附着生物膜群落有更为强烈的相互作用,而附着生物膜相较絮体污泥则有着更为丰富的参与硝化过程的物种(Nitrospira)以及更为“健壮”的生态网络.
传统输电线路施工管控系统下施工风险等级判断误差较大,导致施工缺陷数据识别准确率偏低.为此,设计基于三维技术的输电线路精细化施工管控系统.硬件设计方面,优化三维传感器,添加组桥方式传感电路,重新定义传感器立体结构.软件设计方面,利用三维技术渲染采集数据,识别数据库存储数据的风险因子,判断施工缺陷风险等级,针对不同等级的风险源,采取相关管控措施,并对管控效果进行预警评估.此次系统与两种传统系统进行对比实验,分别对输电线路和杆塔的缺陷数据进行识别,结果表明,所提方法提高了缺陷数据识别准确率,耗时更低,使系统对施
This paper studies the secure and accurate clock synchronization problem for sensor net-works with time-varying delays and malicious attacks.A novel clock synchronization scheme based on the attack detection mechanism,attack compensation,and maximum conse
In this paper,an approximation-based event-triggered model predictive control(AETMPC)strategy is proposed to implement event-triggered model predictive control for continuous-time con-strained nonlinear systems under the digital platform.In the AETMPC str
湖南汝城位于华夏“多”字形构造带、南岭东西向构造带中部的交汇处,区内热水镇是中国中南六省最大的地热田,一般水温为91.5℃,最高98℃,异常面积3 km2.为深入查明汝城干热岩地热赋存条件及资源类型,该文在以往地热地质研究基础上,通过对区内地热资源分布、地温场、岩石热物性及放射性特征等,综合分析了汝城地区干热岩地质特征及干热岩地热资源成因,并总结分析了汝城区干热岩资源类型.研究表明,区内隐伏岩体发育,平均地温梯度达13.74℃/100 m,花岗岩生热率达3.13~14.86μW/m3,平均生热率为6.97
The problem of exponential module-phase synchronization of complex-valued neural net-works(CVNNs)with time-varying delay and stochastic perturbations was investigated.The model of CVNNs with time-varying delay and stochastic perturbations was considered.T
The g-SGD algorithm significantly outperforms the conventional SGD algorithm in ReLU neural networks by adopting the basis path set.However,how the inner mechanism of basis paths works remains mysterious,and the g-SGD algorithm that helps to find a basis
The study on how to identify influential spreaders in complex networks is becoming increas-ingly significant.Previous studies demonstrate that considering the shortest path length can improve the accuracy of identification,but which ignore the influence o
This paper investigates the set stability of probabilistic time-delay Boolean networks(PT-DBN)with impulsive effect.Firstly,using the algebraic state space representation,an equivalent stochastic system is established for PTDBN with impulsive effect.Then,
We study the equipment sharing problem where a group of food & beverage companies share the same equipment of a contractor and wish to have their processing tasks coordinated such that the total cost is minimized.The raw materials to be processed are peri