在线学习活动设计与网络教学平台的功能     

李松  王莉娟 《现代远距离教育》2011,(3):57-59

本文主要论述了网络教学平台在网络教学中的重要地位,并从功能模块和网络课程教学实施的角度分析了网络教学平台的功能,通过调研提出了目前成人学历教育中在线学习活动的类型及特点,最后分析不同类型在线学习活动对网络教学平台的功能要求。  相似文献   

中小学校长管理能力培训策略研究     

宋志辉  高峻峡 《成人教育》2011,31(3):63-64

加强中小学校长管理能力的培训,对于促进校长专业成长有着重要的意义。制约校长管理能力培训的因素主要有脱产培训的时间保证、专业性培训的质量要求等。探索中小学校长管理能力培训的有效策略是通过管理实践案例提升校长们解决问题的能力,通过方法的掌握提高管理工具的使用能力,通过学校发展规划的训练提高他们的战略思考能力。在校长培训中,以管理能力为中心的培训将是今后培训发展的基本方向。  相似文献   

浅析结构化测评在人力资源管理领域的应用     

高峻峡 《成人教育》2011,31(2):34-35

目的：研究人力资源管理领域结构化测评的普及和应用。通过对有关结构化测评领域的文章进行分类,从中提出重要的观点进行分析研究。结论：在国内外人员招聘和公开选拔,测评都是一个关键环节,而结构化测评是正式的,有指导性的,事先决定了问题项目和反应可能性的测评。由于结构化测评的问题都与工作相关,对被测人员而言会更加的公平。与同样具有较高选拔效度的工作抽样和评价中心相比,结构化测评费用更低,花费时间较少而且容易实施。因此,研究结构化测评在人力资源管理领域的应用是发展的趋势。  相似文献   

Impulse-based coupling synchronization of multiple discrete-time memristor-based neural networks with stochastic perturbations and mixed delays     

Huiyuan Li  Jian-an Fang  Xiaofan Li  Tingwen Huang 《Journal of The Franklin Institute》2021,358(1):980-1001

The global synchronization problem of multiple discrete-time memristor-based neural networks (DTMNNs) with stochastic perturbations and mixed delays is studied under impulse-based coupling control, where the coupling control only occurs at discrete impulse times. The impulse-based coupling control will further reduce the communication bandwidth for multiple DTMNNs to achieve coupling synchronization. We construct an array of multiple DTMNNs with stochastic perturbations and mixed delays and propose a novel impulse-based coupling control scheme. By utilizing Lyapunov–Krasovskii functional technique, schur complement technique and linear matrix inequality (LMI) method, some sufficient synchronization conditions depending on stochastic perturbations and mixed delays are established. At the end of this paper, a numerical example is given and the effectiveness of the impulse-based coupling control is illustrated by using MATLAB programming.  相似文献   

Output regulation problem of a class of pure-feedback nonlinear systems via adaptive neural control     

Fujin Jia  Junwei Lu  Yongmin Li 《Journal of The Franklin Institute》2021,358(11):5659-5675

In the paper, a control algorithm for output regulation problem of nonlinear pure-feedback systems with unknown functions is proposed. The main contributions of the proposed method are not only to avoid Assumptions of unknown functions, but also adopt a non-backstepping control scheme. First, a high-gain state observer with disturbance signals is designed based on the new system that has been converted. Second, an internal model with the observer state is established. Finally, based on Lyapunov analysis and the neural network approximation theory, the control algorithm is proposed to ensure that all the signals of the closed-loop system are the semi-globally uniformly ultimately bounded, and the tracking error converges to a small neighborhood of the origin. Three simulation studies are worked out to show the effectiveness of the proposed approach.  相似文献   

Adaptive leaderless consensus control of a class of strict feedback nonlinear systems with guaranteed transient performance under actuator faults     

Wengang Ao  Jiangshuai Huang  Baoyu Wen  Fangzheng Xue 《Journal of The Franklin Institute》2021,358(11):5707-5721

The problem of adaptive leaderless consensus control of a class of uncertain strict feedback nonlinear systems with guaranteed transient performance is investigated in this paper. The system model is a class of strict feedback nonlinear systems with parametric uncertainty, actuator fault and external disturbance. How to guarantee the transient performance of consensus error is involved. To solve this problem, the consensus is transmitted into stabilization of a new variable. Ultimately the consensus errors will asymptotically converge to zero and faster than a given exponentially converging variable. Finally, simulation results show the effectiveness of proposed control scheme.  相似文献   

Adaptive output feedback fault tolerant control for uncertain nonlinear systems based on actuator switching     

Chen Sun  Yan Lin 《Journal of The Franklin Institute》2021,358(11):5722-5749

In this paper, an adaptive output feedback fault tolerant control (FTC) based on actuator switching is proposed for a class of single-input single-output (SISO) nonlinear systems with uncertain parameters and possible actuator failures, for which a set of healthy actuators are available as backups. While high-gain K-filters are utilized to estimate the unmeasured states, an adaptive control law is designed to compensate for the parameter uncertainties and certain actuator failures, an actuator switching strategy based on a set of appropriately designed monitoring functions (MFs) is proposed to tackle those serious actuator failures, make tracking error satisfy prescribed transient and steady-state performance and guarantee closed-loop signal boundedness.  相似文献   

M-estimation based sparse grid quadrature filter and stochastic stability analysis     

《Journal of The Franklin Institute》2021,358(15):7916-7937

In this study, a novel M-estimation based sparse grid quadrature filter (MSGQF) is proposed to improve the robust performance of the nonlinear system. We present a systematic formulation of the sparse grid quadrature filter (SGQF), and extend it to the discrete-time nonlinear system with abnormal measurement values. The M-estimation method is introduced in the SGQF, which uses the Huber’s cost function to update the measurement covariance. Convergence on the modified robust SGQF is established and proved. The sufficient conditions are shown to ensure stochastic stability of the MSGQF. A target tracking problem has been conducted to demonstrate the accuracy of the MSGQF. When measurement abnormal values appear, it outperforms the unscented Kalman filter (UKF), the cubature Kalman filter (CKF) and the SGQF. Theoretical analysis and simulation results prove that the MSGQF provides significant performance improvement in the robustness of the nonlinear system.  相似文献   

The composite-disturbance-observer based stochastic model predictive control for spacecrafts under multi-source disturbances     

《Journal of The Franklin Institute》2021,358(15):7603-7627

In this paper, the attitude control problem of the spacecraft system under input/state constraints and multi-source disturbances is investigated. A novel estimation method, composite-disturbance-observer (CDO), is proposed to provide an estimate for both modeled and unmodeled disturbances in an online manner. Based on the estimates provided by the CDO, the composite stochastic model predictive control (C-SMPC) scheme is designed for attitude control. The recursive feasibility of the C-SMPC method is guaranteed by reformulating the state and input constraints. Furthermore, the sufficient conditions are established to guarantee the stability of the overall closed-loop system. Finally, the simulation on the attitude control of the spacecraft is conducted to verify the effectiveness of the proposed method.  相似文献   

麦克乐对战后初期日本学校体育和保健教育的影响     

王程 《体育学刊》2011,(5):94-97

简述了二战后美国政府筹备和组建派往日本的教育使节团的背景。作为美国教育使节团成员之一的麦克乐参与了美国教育使节团报告书的起草工作。报告书作为战后日本教育的原点和总的指导方针,对日本教育基本法以及学校教育法的制订产生了极大的影响,战后的日本教育在此基础上进行了全面的改革。麦克乐的思想对二战后日本学校体育和保健教育方针的确立产生的影响是重大的。  相似文献