国家治理现代化视域下我国体育智库的责任与担当     

杨涛 《河北体育学院学报》2020,34(6):50-55

党的十九届四中全会明确提出了“坚持和完善中国特色社会主义制度、推进国家治理体系和治理能力现代化的重大意义和总体要求”。在新的历史时期，我国体育智库的新使命在于推进体育强国、健康中国和体育治理现代化建设。基于此，采用文献资料法和逻辑分析法，从外部和内部两个角度，对我国体育智库的责任和担当进行深入探讨。认为体育智库对内要注重更新管理体制，完善运行机制，建设和优化人才培养体系；对外要通过科研成果转化实现体育产业高质量发展，重塑体育治理生态，提升国家体育文化软实力和国际体育地位硬实力，促进体育融合发展，最终服务于我国体育治理体系和治理能力现代化。  相似文献   

面向科技强国的科技评价制度需要科技体制的结构性变革          下载免费PDF全文

李培楠  张苏雁 《中国科学院院刊》2019,34(5):552-559

习近平总书记在2016年"科技三会"上发出建设世界科技强国的号召。建设世界科技强国不仅需要资源要素的支撑,更需要有将这些要素进行合理配置的制度安排,需要新的模式来激发新的创造力。其中,对评价制度的改革在寻找科技体制新模式的改革关键举措中具有基础性作用。为此,回顾过去,文章从科技体制与科技评价的关系视角重新审视这一问题,从回归科技评价的本源出发,探究科技评价异化的体制问题。相应地,面向未来,文章从改革主线、改革结构、评价体系3个方面提出推动以科技创新为核心的科技体制改革建议,为建成百年科技强国提供政策依据。  相似文献   

Optimal synchronization controller design for complex dynamical networks with unknown system dynamics     

Ya-Wei Cao  Guang-Hong Yang  Xiao-Jian Li 《Journal of The Franklin Institute》2019,356(12):6071-6086

In this paper, the optimal synchronization controller design problem for complex dynamical networks with unknown system internal dynamics is studied. A necessary and sufficient condition on the existence of the optimal control minimizing a quadratic performance index is given. The optimal control law consists of a feedback control and a compensated feedforward control, and the feedback control gain can be obtained by solving the well-known Algebraic Riccati Equation (ARE). Especially, in the presence of unknown system dynamics, a novel adaptive iterative algorithm using the information of system states and inputs is proposed to solve the ARE to get the optimal feedback control gain. Finally, a simulation example shows the effectiveness of the theoretical results.  相似文献   

Intermittent control strategy for synchronization of fractional-order neural networks via piecewise Lyapunov function method     

Ying Yang  Yong He  Min Wu 《Journal of The Franklin Institute》2019,356(8):4648-4676

In this paper, the synchronization problem of fractional-order neural networks (FNNs) with chaotic dynamics is investigated via the intermittent control strategy. Two types of intermittent control methods, the aperiodic one and the periodic one, are applied to achieve the synchronization of the considered systems. Based on the dynamic characteristics of the intermittent control systems, the piecewise Lyapunov function method is employed to derive the synchronization criteria with less conservatism. The results under the aperiodically intermittent control show more generality than the ones via the periodically intermittent control. For each of the aperiodic and periodic cases, a simple controller design process is presented to show how to design the corresponding intermittent controller. Finally, two numerical examples are provided to demonstrate the effectiveness of the obtained theoretical results.  相似文献   

Linear output-feedback-based semi-global stabilization for switched nonlinear time-delay systems     

Zhenhua Li  Lijun Long  Jun Zhao 《Journal of The Franklin Institute》2019,356(13):7224-7245

This paper focuses on the problem of semi-global output-feedback stabilization for a class of switched nonlinear time-delay systems in strict-feedback form. A switched state observer is first constructed, then switched linear output-feedback controllers for individual subsystems are designed. By skillfully constructing multiple Lyapunov–Krasovskii functionals and successfully solving several troublesome obstacles, such as time-varying delay and switching signals and nonlinearity in the design procedure, the switched linear output-feedback controllers designed can render the resulting closed-loop switched system semi-globally stabilizable under a class of switching signals with average dwell time. Furthermore, under some milder conditions on nonlinearities, the semi-global output-feedback stabilization problem for switched nonlinear time-delay systems is also studied. Simulation studies on two examples, which include a continuous stirred tank reactor, are carried out to demonstrate the effectiveness of the proposed approach.  相似文献   

Multi-lagged-input iterative dynamic linearization based data-driven adaptive iterative learning control     

Na Lin  Ronghu Chi  Biao Huang  Zhongsheng Hou 《Journal of The Franklin Institute》2019,356(1):457-473

This article presents a multi-lagged-input based data-driven adaptive iterative learning control (M-DDAILC) method for nonlinear multiple-input-multiple-output (MIMO) systems by virtue of multi-lagged-input iterative dynamic linearization (IDL). The original nonlinear and non-affine MIMO system is equivalently transformed into a linear input-output incremental counterpart without loss of dynamics. The proposed learning law utilizes the desired trajectory to cancel the influence from iteration-by-iteration variations, as well as additional multi-lagged inputs to improve control performance. The developed iterative estimation law is more effective and also makes estimation of the unknown parameters easier because the dynamics for each parameter to represent are decreased by dividing the system into multiple components in the multi-lagged-input IDL formulation. Moreover, the proposed M-DDAILC does not need an explicit and accurate model. It is proved to be iteratively convergent with rigorous analysis. Both a numerical example and a practical application to a permanent magnet linear motor are provided to verify the validity and applicability of the proposed method.  相似文献   

Dynamics of a stochastic multigroup SIQR epidemic model with standard incidence rates     

Qun Liu  Daqing Jiang  Tasawar Hayat  Ahmed Alsaedi 《Journal of The Franklin Institute》2019,356(5):2960-2993

In this paper, we consider a stochastic multigroup SIQR epidemic model with standard incidence rates. By using the stochastic Lyapunov function method, we establish sufficient conditions for the existence of a stationary distribution of the positive solutions to the model. Then we establish sufficient conditions for extinction of the diseases. A stationary distribution means that all the individuals can be coexistent and persistent in the long term. Finally, some examples and numerical simulations are introduced to illustrate our theoretical results.  相似文献   

资源型城市绿色创新能力评价指标体系构建     

程鹤 《科技管理研究》2019,(19)

绿色创新是实现资源型城市经济增长、环境保护、社会和谐的有效途径，而构建资源型城市绿色创新能力评价指标体系是对资源型城市绿色创新能力进行评价的重要环节。本文以国内外具有代表性的机构和文献中的绿色创新能力高频指标为基础，根据绿色创新能力的内涵，结合资源型城市发展特点，海选70个数据可观测的指标，通过数据的正态分布检验后，选取非参数统计方法的灰关联系数与spearman分析方法定量筛选指标。既保证了指标之间信息不重复，又能显著影响评价结果，同时避免了现有研究忽略筛选方法使用条件就加以应用的弊端。以10个典型资源型城市2016年指标数据为样本，筛选并构建了包含27个指标的资源型城市绿色创新能力评价指标体系，验证了筛选方法的可行性和有效性。最后提出了相应的政策建议。  相似文献   

协同产品创新系统的知识传播模型及其仿真研究     

苏加福  杨涛  张娜 《科技管理研究》2019,39(15)

针对协同产品创新系统（CPIS）知识传播的特征，从组织知识活动微观层面对CPIS知识传播机理进行研究。在分析CPIS知识传播过程及影响因素的基础上，借鉴SIS疫病传播思想，将知识传播影响因素抽象为知识传播过程中的参数变量，构建基于元胞自动机的CPIS知识传播的K-SIS（knowledge-SIS）模型；以团队平均知识水平与知识水平标准差作为知识传播绩效的度量，利用K-SIS模型仿真研究知识粘性、主体间信任度、团队协同关联强度以及知识遗忘等因素对知识传播过程的影响情况，研究成果可为组织提高CPIS知识传播效率提供有价值的建议。  相似文献   

基于数据共享的标准系统的有效性分析——以煤炭企业为例     

谭章禄  袁慧  马营营 《科技管理研究》2019,39(4)

信息化标准是解决系统集成、数据共享的基本途径。本文以煤炭企业为切入点探讨信息化标准的有效性。基于煤企在引入一系列信息系统后产生的对信息化标准的客观需求，本文将信息化标准看作一个系统，从煤企信息系统建设的5个阶段以及信息化标准系统3个阶段出发，分析了有效的煤企信息化标准应该同时具有适应性A（adaptability）、实用性F（functionality）、可实现性R（realizability）、参与性J（joint）、科学性S（scientificity）、前瞻性P（prospective）等特性，在此基础上提出了煤企信息化标准系统有效性的影响因素并给出了因素关系图和关系链图。最后，构建了标准有效性的计算公式。  相似文献