“双一流”背景下地方高校操作系统课程教学改革研究     

李娜  李征  王鹏  达列雄  王磊 《教育技术导刊》2021,19(12):85-88

在“双一流”建设的大背景下,以提高教学质量,培养地方应用型高级专业人才为出发点,以成果或产出导向（OBE）教育理念为指导,针对计算机类专业操作系统课程进行教学改革。通过精心组织课程教学内容,采用线上线下混合教学模式,实施科学课程评价,并将课程思政教育融入专业教学全过程,以此构建地方高校操作系统一流课程。教学实践证明,学生学习效果稳步提升,教学质量进一步提高。  相似文献   

高校开展课程思政专题教师培训的必要性分析     

周融 《教育教学论坛》2021,(11):65-68

课程思政通过开发专业课程的思想政治教育元素,发挥思政教育的功能,而目前高校专业课教师还对课程思政的实施途径和方法缺乏全面认识。通过对高校教师培训、课程思政建设等方面分析了高校在教师培训中加入课程思政专题培训的必要性和紧迫性,促进高校思政教育体系的建设和形成,进而实现"立德树人"的教育目的。  相似文献   

高校实施发展性教师绩效评价研究     

张萌物  刘燕 《大连大学学报》2011,32(5):114-117

绩效评价是教师评价的重要内容。近年来高校教师绩效评价问题受到广泛重视,绩效评价指标设计方法可谓五花八门,设计出的指标之多令人眼花缭乱,然而,始终不能摆脱奖惩性高校教师绩效评价的束缚。本文以x大学为例,总结了当前教师绩效评价的诸多弊端,结合发展性评价理念,高校应建立校、院两级教学和学术委员会,实现“教授治校”、完善区分性评价指标、将评价纳入绩效管理的全过程,这样才能保障发展性高校教师绩效评价的实施效果。  相似文献   

基于相互套牢的创业企业控制权最优配置研究   总被引：1，自引：0，他引：1       下载免费PDF全文

党兴华  韩瑾  陈敏灵 《科研管理》2015,36(4):39-47

本文以不完全契约为基础,在金融契约和控制权配置理论的框架内,从缓解企业家与投资家相互套牢问题的角度,在扩展企业家风险偏好、假设企业状态变量不可证实的基础上,通过引入企业家事前努力水平、企业家与投资家讨价还价能力、企业中期绩效信号、投资家投资额、管理监督成本、项目清算价值等变量,建立了创业企业控制权动态配置模型,通过比较不同控制权配置方式下的双方收益与企业价值,确定控制权最优配置,研究表明:相机控制与投资家控制交替实现控制权最优配置;当企业家讨价还价能力较强时,或较弱时,如果绩效信号较低,投资家控制最优,企业价值不会随之变化;当企业家讨价还价能力较弱并低于临界值,如果绩效信号较高,相机控制最优,反之投资家控制最优,企业价值随之发生相应变化。  相似文献   

Distributed control of time-delay interconnected nonlinear systems     

《Journal of The Franklin Institute》2023,360(13):9637-9662

This paper addresses the distributed control of delayed interconnected nonlinear systems with time-varying delays in both the local subsystems’ dynamics and the physical interconnections among the subsystems. The Takagi–Sugeno fuzzy model with nonlinear consequent parts (N-TS), which is capable to provide less complex representations than standard T–S fuzzy models, is considered to efficiently deal with this class of complex systems. Then, based on Lyapunov–Krasovskii stability arguments, a synthesis condition is proposed to design a distributed control law such that the origin of the closed-loop interconnected system is locally asymptotically stable together with a guaranteed set of admissible initial conditions for which the validity of the N-TS fuzzy model is ensured. Moreover, a quasi-convex optimization procedure is formulated to enlarge the set of admissible initial conditions. The effectiveness of the proposed synthesis condition is validated in two numerical examples, including an interconnected power network with seven generators.  相似文献   

Automatic parking trajectory planning based on random sampling and nonlinear optimization     

《Journal of The Franklin Institute》2023,360(13):9579-9601

The current parking trajectory planning algorithms based on geometric connections or formulation of optimization problems in automatic parking systems have strict requirements on the starting position, lower planning efficiency and discontinuous curvature of the reference trajectory. In order to solve these problems, a hierarchical planning algorithm which is combined with nonlinear optimization and the improved RRT* algorithm (Rapidly-exploring Random Tree Star) with Reeds-Shepp curve is proposed in this paper. First, the improved RRT*RS algorithm with the rapid repulsion-straddle experiment is designed for enhancing the efficiency of path planning. Second, because of the shortcomings of the Reeds-Shepp curve that can meet the minimum turning radius but not realize the continuous curvature of the path, a nonlinear optimization problem based on convex-set obstacle constraints is formulated and solved. Finally, simulation results show that the proposed parking trajectory planning algorithm in this paper can plan an effective parking trajectory with continuous curvature in different starting positions and multiple parking scenarios.  相似文献   

Three-dimensional low-order fixed-time integrated guidance and control for STT missile with strap-down seeker     

《Journal of The Franklin Institute》2023,360(13):9788-9811

Strap-down seeker is rigidly fixed onto the missile body, which results in detection information being coupled to the missile’s attitude and having a narrow field-of-view (FOV). During the terminal guidance flight, attitude adjustment of the missile may lose the target’s lock and reduce interception accuracy. Therefore, this paper investigates three-dimensional integrated guidance and control (IGC) under the constraints of the FOV and roll angle for skid-to-turn (STT) missile with strap-down seeker. A new low-order IGC model is constructed by establishing a second-order model of body line-of-sight (BLOS) angle based on strap-down decoupling theory and combining it with the second-order roll angle equation. Furthermore, a low-order fixed-time IGC scheme is developed using the integral barrier Lyapunov function (iBLF) to limit BLOS and roll angles. Fixed-time filter, which avoids the “complexity explosion” caused by conventional back-stepping technique, is utilized for obtaining virtual control command and its derivative. A fixed-time disturbance observer is introduced to compensate for the lumped disturbance. According to Lyapunov stability theory, it is proven that the proposed IGC scheme can make the closed-loop system converge within a fixed time. Finally, the effectiveness and robustness of the IGC scheme are verified by various numerical simulations.  相似文献   

Observability of Boolean control networks with stochastic disturbances     

《Journal of The Franklin Institute》2023,360(13):9560-9578

In this paper, the observability problem of Boolean control networks (BCNs) with stochastic disturbances is investigated via two kinds of control schemes: deterministic control and state feedback control. Firstly, based on the proposed indicator matrix, a simplified system of the original augmented Boolean system is constructed. Based on the analysis of the auxiliary system, observability of the original BCN is converted to determine whether an observable set can be reached from another unobservable set. After that, some necessary and sufficient conditions are obtained to judge the observability of BCNs. At the same time, two algorithms are proposed for designing these two types of control sequences. Finally, numerical simulations are also provided to demonstrate feasibility of the theoretical results.  相似文献   

Adaptive iterative extended state observer-based data-driven iterative learning model predictive control for semiconductor silicon single crystal batch process     

《Journal of The Franklin Institute》2023,360(4):3119-3136

Aiming at the problems of unstable batch control of key crystal quality parameters and susceptibility to batch-to-batch non-repetitive disturbances during repeated operation of single crystal furnaces, this paper proposes a data-driven iterative learning model predictive control method based on an adaptive iterative extended state observer (IESO) for designing melt temperature and crystal diameter learning controllers with disturbance suppression. By applying dynamic linearization techniques and model predictive control strategies along the iterative axis, an ILMPC scheme with disturbance compensation terms using only input and output data of the system is designed. Among them, adaptive IESO is used to estimate the disturbance compensation terms. Then, the theoretical analysis shows that the tracking error of the ILMPC scheme can converge to a bounded range as the number of iterations increases. The experimental results verify the effectiveness of the proposed control method, which not only ensures that the control system has learning ability, but also achieves stable and accurate control of crystal quality parameters.  相似文献   

新入职教师课堂教学方法的选择与运用     

钱栩  沈璿 《当代教师教育》2011,(3):77-81

对即将从事教育工作的新入职教师而言,在学校课堂教学中不仅要考虑指导学生获得直接的知识经验,更要考虑教导他们以最简单、最便捷的途径和方法,有效地获取更多的间接知识经验,这就有一个如何选择与运用课堂教学方法的问题。为此,在选择教学方法时首先要遵循目标性原则、效率性原则和以学定教原则,还要关注到应用每种方法的制约条件,这样才能有效地提高教学质量。  相似文献