探讨线性代数的核心

本文从关于线性代数基本结构的各种不同看法出发，探讨线性代数在整个数学学习中的基本问题，并根据线性代数基本问题讨论线性代数的结构安排.     

矩阵特征体系与化学动力学参数估计

矩阵的特征系统在线性代数知识体系中作为最重要的一环,在实际教学中却面临学生无法直观体会其价值的困境.面对化学化工专业的线性代数课程教学中,针对矩阵特征体系在化学动力学中的应用,开辟与专业结合的应用专题.其目的在于阐明线性代数作为分析与计算工具的基础作用,同时也实现和专业课程的无缝衔接,以促进学生专业课程的学习.     

行列式计算的常用方法

行列式计算的常用方法田文平（南京审计学院）行列式的计算是线性代数教学一开始就面临的一个重要内容，能否顺利完成这部分教学任务，不仅直接影响到以后线性代数的学习，而且会影响到学生学习线性代数的积极性．为此，作者在查阅部分参考资料的基础上，结合自己的教学实...     

线性代数课程思政建设与教学实践

探讨了线性代数课程思政建设与教学实践.通过优化课程思政教学目标,从线性代数相关历史人物、课程知识点及教学拓展案例三个方面,积极挖掘课程思政元素切入点.加强课程思政教学团队建设,将思想政治教育融入到线性代数课堂混合式教学,增加对学生思政学习的过程性评价.教学实践表明,线性代数课程思政教育有利于培养学生的综合素质,受到学生...     

线性代数方法在高等数学中的若干应用实例研究

通过运用线性代数方法解决高等数学中一些问题的若干应用实例,弥补这两门学科各自独立授课的不足.选取部分案例,探讨更完整、系统的线性代数教学改革模式.     

面向能力培养和计算思维训练的线性代数混合式教学改革与实践

提出了以能力培养为目标,以计算思维训练为手段的《线性代数》混合式教学改革与实践.首先,将计算思维引入线性代数教学过程,以计算思维训练驱动线性代数的现代教学和课程改革.其次,教师主体通过不断提升信息化教学能力,设计适合在泛在环境下碎片化学习的混合式教学过程,培养学生运用线性代数思维分析和解决专业问题的能力.问卷调查结果表明了实施混合式教学改革的有效性.     

中外线性代数教材的比较与探讨

将中外线性代数教材做了较系统的比较,包括教材内容、结构安排、习题配置等多个方面,并通过比较发现和分析美国等西方国家线性代数教材的优点和新理念,以达到交流互补,融合提高的目的.最后,在参考与借鉴的基础上,对我国线性代数教材建设和教学改革作了一些思考和探讨.     

问题驱动是线性代数有效的教学法之一

针对目前高校线性代数教学所面临的问题，提倡以问题驱动的方式实施线性代数课程的教学．问题驱动的目的是让学生参与到课堂教学当中，由“问题链”引导学生逐步地认识所学内容的本质部分与核心思想．通过引导学生思索，提问题，做结论，来推动学生进行课堂学习，促生和强化教学的互动效应。获取良好的教学效果．     

基于CDIO理念的线性代数课程教学改革

CDIO是当前高等工程教育的一种新型教育模式,对工程教育的基础课程教学具有同样的指导意义.本文针对工科线性代数课程的特点和教学现状,提出了基于CDIO理念的线性代数课程教学改革,立足于调动学生主动学习的积极性,对教学模式、教学方法与手段、实验教学、考核方式等方面进行探索,指出了主动式学习方式对提高教学质量和教学效果的重要作用.     

善用初等变换展开线性代数理论教学

初等变换是线性代数的基本变换,在线性代数课程中常常被用来计算,例如求解线性方程组、计算方阵的行列式、矩阵的求逆以及更一般的矩阵方程AX=B的求解、计算整数矩阵和域上多项式矩阵的Smith标准形、以及计算对称阵的相合标准形等.本文说明如何灵活利用初等变换,给出线性代数课程中一些重要理论结果的系统而又简洁的证明.     

The interface of buffer design and cyclic scheduling decisions in deterministic flow lines

In this paper, we address some issues on the interface of buffer design and cyclic scheduling decisions in a multi-product deterministic flow line. We demonstrate the importance of the above interface for the throughput performance of the flow line. In particular, we point out that the use of sequence-independent information, such as workload distribution and variability in processing times among stations, is not adequate to decide the optimal buffer configuration of the flow line. We formulate the buffer design problem for a fixed sequence of jobs as a general resource allocation problem, and suggest two effective heuristics for its solution. For the simultaneous buffer design and cyclic scheduling problem, we suggest an iterative scheme that builds on the effectiveness of the above heuristics. One of the side results of our extensive computational studies on this problem is that the general guidelines of buffer design in single-product flow lines with stochastic processing times are not directly transferable to the multiproduct deterministic flow line environment.     

A modeling approach to logistics in concurrent engineering

This paper advocates logistics involvement in the early phases of product design and development in a concurrent engineering environment. A concurrent engineering environment and the benefits of such involvement are explained in detail. The paper focuses on facilitating an interface and a collaboration between the designer and the logistician. A conceptual interface for design for logistics is presented. Four areas of interface are considered: (a) logistics engineering, (b) manufacturing logistics, (c) design for packaging, and (d) design for transportability. A set of detailed design factors pertaining to each area are presented. A modeling approach, Bond Energy Algorithm, is used to accomplish the design for logistics concerns developed throughout the paper. An example is provided to test and validate the algorithm. The results are analyzed and appropriate perspectives for managerial implication of the methodology are provided. Finally, some conclusions and assessments are presented.     

The design and implementation of a prototype structured modeling environment

This paper describes the design and implementation of the prototype structured modeling environment FW/SM. The underlying design principles provide the central focus. Other points of interest include discussions of FW/SM's delivery platform, its interface to external packages, and its optimization interfaces. The intended audience is all modeling system evaluators, designers, and implementors, including those who do not happen to take a structured modeling approach.     

Single objective layout design of user interface components with multiple qualitative factors

The purpose of this paper is to present a model to design the layout of the user interface components that handles many numbers of qualitative factors. An alternate rating system is also proposed for the closeness relationship ratings between the various pairs of components evaluated by using GOMS (goals, operators, methods and selection rules) technique. The proposed model is applied to the design of the part of the user interface in order to obtain the best layout of the components. The results of the proposed model are compared with that of an existing model, which handles single qualitative factor applied to obtain the layouts of user interface components.     

物资调配优化方案软件“物流通”的开发制作与应用

本文主要是设计制作了针对物流与供应链管理中的物资配送问题的一个“物流通”软件。我们首先构造了一个最优化模型并结合Matlab和Excel进行编程计算及软件设计制作。所设计的物资配送应用软件能独立于Matlab进行方案的优化运行,实现了与Excel电子表格的接口并使得能在Excel中直观地显示配送的最优方案.最后我们结合具体案例进行了分析,分析结果说明了所给软件的有效性,且具有使用方便,图形用户界面良好的特点。     

Uniform strain field inside a non-circular inhomogeneity with homogeneously imperfect interface in anisotropic anti-plane shear

We re-examine the conclusion established earlier in the literature that in the presence of a homogeneously imperfect interface, the circular inhomogeneity is the only shape of inhomogeneity which can achieve a uniform internal strain field in an isotropic or anisotropic material subjected to anti-plane shear. We show that under certain conditions, it is indeed possible to design such non-circular inhomogeneities despite the limitation of a homogeneously imperfect interface. Our method proceeds by prescribing a uniform strain field inside a non-circular inhomogeneity via perturbations of the uniform strain field inside the analogous circular inhomogeneity and then subsequently identifying the corresponding (non-circular) shape via the use of a conformal mapping whose unknown coefficients are determined from a system of nonlinear equations. We illustrate our results with several examples. We note also that, for a given size of inhomogeneity, the minimum value of the interface parameter required to guarantee the desired uniform internal strain increases as the elastic constants of the inclusion approach those of the matrix. Finally, we discuss in detail the relationship between the curvature of the interface and the displacement jump across the interface in the design of such inhomogeneities.     

“一站式”远程开放实验平台的设计与实现

"一站式"远程开放实验平台需要集成和整合分别多个来自不同厂商的实践教学软件,而不同的实践教学软件又有各自不同的用户系统与管理平台.针对这一情况,阐述了"一站式"远程开放实验平台的设计思路,并论述了"一站式"远程开放实验平台通过单点登录解决跨平台接口技术,通过Web Service方法实现平台对实践教学软件的数据的采集以及平台的权限设计与实现等关键技术.     

Augmented hybrid finite element method for domain decomposition

We present an Augmented Hybrid Finite Element Method for Domain Decompositon. In this method, finite element approximations are defined independently on each subdomain and do not match at interface. This dows the user to mda local change of design, of meshes on one aubdomain without modifying other subdomains. Optimal reaults are obtained for a second-order model problem.     

Large scale structural synthesis

A general purpose optimization program is coupled to a large scale finite element program to provide an efficient tool for structural synthesis. The resulting interface program may be used to design structures for minimum weight, subject to constraints on stress, displacement, and vibration frequencies. A variety of state-of-the-art techniques are employed, including design variable linking, constraint deletion, reciprocal variables, and formal approximations. The capability is demonstrated with the design of a gear housing using 30 design variables and over 5000 nonlinear inequality constraints. The finite element model consists of over 1600 elements and 7000 displacement degrees of freedom. The design required six detailed finite element analyses and approximately one hour on a Cray-1s supercomputer. It is concluded that structures of practical size and complexity can be efficiently designed using numerical optimization.