高等数学微分概念教学初探

本文主要提出笔者对微分概念的一个教学设计,由一个简单问题贯穿始终,让学生在提出问题解决问题的过程中,自然自主地构建微分概念,推导出微分运算法则,从而加深对微分概念的理解,提高教学效果。     

科学发展观引领独立学院学生党建工作再创新局面--沈阳航空航天大学北方科技学院学生党建工作探索与实践

近年来,随着学生党建工作对独立学院健康发展的作用日趋显著,独立学院也更加重视对学生党建工作的研究与探讨。本文以沈阳航空航天大学北方科技学院为例,探索在科学发展观理论的指导下,独立学院学生党建工作的新思路、新方法,并将学院践行理论的实际工作成果作呈报。     

Consensus for multiple heterogeneous Euler–Lagrange systems with time-delay and jointly connected topologies

In this paper, we consider the consensus problem of multiple agents modeled by Euler–Lagrange (EL) equation, among which two classes of agents are addressed, i.e., some agents with exactly known parameters and the others with parametric uncertainties. We propose a distributed consensus protocol for the heterogeneous EL systems in which both time-delay and jointly connected topologies are taken into consideration. Based on graph theory, Lyapunov theory and Barbalat?s lemma, the stability of the controller is proved. A distinctive feature of this work is to investigate the consensus problem of EL systems with heterogeneous dynamics, time-delay and jointly connected topologies in a unified theoretical framework. Simulation results are also provided to illustrate the effectiveness of the obtained results.     

High dynamic adaptive robust control of load emulator with output feedback signal

This paper is concerned with the high performance adaptive robust control problem for an aircraft load emulator (LE). High dynamic capability is a key performance index of load emulator. However, physical load emulators exist a lot of nonlinearities and modeling uncertainties, which are the main obstacles for achieving high performance of load emulator. To handle the modeling uncertainty and achieve adjustable model-based compensation, firstly, the mathematical model of the load emulator is built, and then a nonlinear adaptive robust controller only with output feedback signal is proposed to improve the tracking accuracy and dynamic response capability. The controller is constructed based on the adaptive robust control framework with necessary design modifications required to accommodate uncertainties and nonlinearities of hydraulic load emulator. In this approach, nonlinearities are canceled by output feedback signal; and modeling errors, including parametric uncertainties and uncertain nonlinearities, are dealt with adaptive control and robust control respectively. The resulting controller guarantees a prescribed disturbance attenuation capability in general while achieving asymptotic output tracking in the absence of time-varying uncertainties. Experimental results are obtained to verify the high performance nature of the proposed control strategy, especially the high dynamic capability.     

图书馆焦虑量表在高校图书馆的应用研究

利用修订后的中文图书馆焦虑量表对沈阳农业大学本科学生进行取样测试,发现现今大学生的图书馆焦虑确实存在,并分析了大学生的图书馆焦虑状况,提出了改进高校图书馆服务方式的对策。     

安徽市场导向型现代信息服务业集群模式探讨

阐述市场导向型产业集群模式的定义及特征,认为集群模式的选择受到政策、资金、智力、市场、产业生命周期等因素影响.用市场导向型集群模式理论,分析安徽现代信息服务业集群模式的现状及问题,并构建安徽市场导向型现代信息服务业集群模式.     

Enabling integrated knowledge acquisition and management in health care teams

Basing treatment, policy and planning decisions on the best available research knowledge remains a central principle in modern health care around the world, yet many health professionals find acquiring and managing published research knowledge challenging. In this paper, we report on a Soft Systems Methodology-based collaborative action research initiative with a specialist mental health service from the United Kingdom's National Health Service. Our objective was to design and implement improvements to their knowledge acquisition and management activities in order to facilitate sustained and effective evidence-based practices. We report on both the factors found to impede effective research knowledge acquisition and management and the development of more integrated knowledge management processes designed to improve the situation.     

国家情报评估与决策的关系——基于多源流理论和认知心理学双重视角

[目的 /意义]《国家情报评估》被认为是美国情报界最正规和最高水平的战略分析产品.对国家情报评估与决策的关系深入研究,可有助于我国完善科学决策体系,对国家治理体系现代化建设大有裨益.[方法/过程]基于多源流理论和认知心理学,从建议采纳视角出发构建出国家情报评估与决策的影响机制模型,借助模糊集定性比较分析法(fsQCA)...     

浅谈信息技术在中职数学教学中的必要性及实践

随着社会经济的发展,科学技术不断进步,信息技术更是广泛应用于各个领域,促进了各领域的发展。在教育领域上运用信息技术已经成为了社会发展的必然趋势,信息技术能够使教学改革找到新的突破口,是教学改革的重要内容之一。要使中职数学教育改变现状,信息技术的运用是非常有必要的。     

物理教师教育类课程优化的实践与思考

本文分析了现有物理教师教育课程的现状及存在的问题,根据教育部《关于大力推进教师教育课程改革的意见》及河南省《关于启动实施教师教育课程改革研究项目的通知》的有关精神,对物理教师教育类课程进行了整合优化,建立了师范技能训练新模式,并对物理教师教育类课程优化的实践进行了反思,提出了建设性的意见与建议。