基于图书馆系统对学风评价的实证研究

自主学习是学风评价的重要指标之一。图书馆作为培养优良学风的重要阵地,可以利用自身系统的优势,对自主学习学风评价指标进行数值量化,对学风进行客观、有真实数据支撑的评价,从而引导和促进学风建设。     

产业结构升级环境下安徽省高职院校建设思路

在产业升级的背景下,承担着安徽省高端技能型人才培养使命的高职教育任重道远。安徽省高职院校必须准确把握产业结构升级的要求,主动更新观念,在政府和企业等社会各界的支持下,加快专业调整,重构课程内容,坚定地走产学研结合之路,培养行业企业满意的人才,不断提升安徽省职业教育的整体水平和实力,努力打造职教强省。     

无推力可控弹可达域和投放域计算

传统炸弹的火控系统中主要采用连续计算命中点CCIP和连续计算投放点CCRP攻击方式。对无推力可控弹在一定投放条件下构成的弹着点区域进行了计算分析，采用对角度积分的快速积分算法，快速确定区域边界。根据无推力可控弹所具有的可达域的概念，提出了连续计算可达域CCAR和连续计算投放域CCRR攻击方式。充分利用了可控弹的可操纵性，降低了瞄准误差要求。     

指数为1的半正定线性系统迭代方法的收敛性

当相容奇异线性系统系数矩阵的指数为1时，文章利用群逆的概念来介绍广义固定迭代方法半范数收敛，商收敛和收敛三者之间的关系，然后再利用群逆的概念来研究广义固定迭代方法半范数收敛的新条件．在保证迭代格式收敛的前提下，该条件比Keller的P-正则条件要弱．     

工程系统的复杂性特征研究初探

工程进入大尺度复杂系统时代,需要Ilities研究以应对其自身及环境的变化。Ili-ties主要起源于工程问题,在工程实践中发展成为多维度的衡量指标、构建方法和范式,成为工程系统功效、性能和架构目标的表征。Ilities反映了工程建构的系统性思维,研究它对我国工程建设具有实践和理论意义。     

Receding horizon H∞ control for discrete-time Markovian jump linear systems

Receding horizon H∞ control scheme which can deal with both the H∞ disturbance attenuation and mean square stability is proposed for a class of discrete-time Markovian jump linear systems when minimizing a given quadratic performance criteria. First, a control law is established for jump systems based on pontryagin’s minimum principle and it can be constructed through numerical solution of iterative equations. The aim of this control strategy is to obtain an optimal control which can minimize the cost function under the worst disturbance at every sampling time. Due to the difficulty of the assurance of stability, then the above mentioned approach is improved by determining terminal weighting matrix which satisfies cost monotonicity condition. The control move which is calculated by using this type of terminal weighting matrix as boundary condition naturally guarantees the mean square stability of the closed-loop system. A sufficient condition for the existence of the terminal weighting matrix is presented in linear matrix inequality (LMI) form which can be solved efficiently by available software toolbox. Finally, a numerical example is given to illustrate the feasibility and effectiveness of the proposed method.     

《高等无机化学》课程体系的革新和优化

由于理论知识和实验技术的日益更新以及各学科的交叉化,研究生课程授课内容日渐增多,且分支越来越细化.很多原有高等无机化学课程的部分章节内容,经过学科交叉并综合最新研究进展被抽取出来独立开设成了具有交叉性的专业课程.为了使得高等无机化学课程知识体系的完整性、系统性和先进性,通过近几年的教学过程与调研,逐渐对高等无机化学课程体系进行了革新,完善与优化.并且加入了大量的相关领域的最近研究进展,增强了该课程的现代性.本课程将会为专业研究生奠定理论知识体系,培养科研能力,开阔研究视野.     

Rapid Manufacturing of Sand Molds by Direct Milling

Direct milling of sand molds is an important development in rapid manufacturing of sand molds. Direct milling is an effective method for manufacturing single or small batches of cast parts. This paper describes experimental investigations to find sand blocks with the appropriate strength, to describe wear patterns of different tools (high-speed steel (HSS), carbide, and polycrystalline diamond (PCD) tools), and to analyze sand mold cutting mechanisms. The results show that the PCD tool outperformes the other tools in terms of tool life. Average flank wear and micro-tipping are the dominant tool failure modes in the sand mold milling process. With a flank wear limit of 0.3 mm, the PCD tool works continuously for about 70 h under the experimental conditions. The experimental results show that the cutting mechanism for direct milling sand molds differs from metal cutting.     

基于CS模式的多机器人网络通信系统

首先提出了基于CS模式的多机器人通信系统的拓扑结构，并对这种通信模式的一致性响应速度特性进行了分析，然后给出了基于Visual C＋＋MFC的CS网络通信模式的程序设计方法，最后对系统进行了实验验证．研究表明，基于CS的多机器入网络通信系统，具有结构简单、一致性速度快的优点，对建立多机器人通信系统具有较大的指导意义．     

关于当前中国宏观经济问题的系统经济学透视

以系统经济学作为思维参证框架，对当前中国宏观经济问题提出了三点基本判断：1．如何把蛋糕做大依然是中国经济当前面临的最大问题；2．产业升级具有自身的规律性；3．宏观经济管理应当基于统计规律。