p叶星形性的判别准则     

杨定恭 《常熟理工学院学报》1999,13(4):1-5

设Ｓｎ（ｐ）（ｐ，ｎ∈Ｎ）表示单位圆盘内ｐ叶星形函数ｆ（ｚ）＝ｚ＾ｐ＋ａｐ＋ｎｚ＾ｐ＋ｎ＋…构成的类。本文给出函数ｆ（ｚ）属于类Ｓｎ（ｐ）的新的充分条件。  相似文献   

上次调和函数     

王丽华 《苏州市职业大学学报》2005,16(1):75-76

调和函数在理论和实践中有着十分重要的作用。本文提出了一类介于解析函数和调和函数之间的函数，称为上次调和函数，并且讨论了上次调和函数的一些性质和特征。  相似文献   

线性代数的几何化与应用化教学探讨   总被引：1，自引：1，他引：0  

滕树军 《河北工业大学成人教育学院学报》2008,23(3):23-28

本文研究了结合解析几何与实际案例进行线性代数教学的重要性及实质內涵.探讨了具体的实施方案,针对改革现状提供了合理化建议,并分别进行了举例说明.  相似文献   

Using the Phono‐Graphix reading programme as a literacy support intervention strategy     

MONICA SHAW  MO DAVIDSON 《Support for Learning》2009,24(1):42-48

The study outlined here was an attempt to investigate the effectiveness of using the Phono‐Graphix reading programme with a group of four struggling readers/non‐readers. The children selected were in Primary 2 and had already had one‐and‐a‐half years of mixed reading instruction strategies – primarily Jolly Phonics with a ‘look and say’ approach. The children were taught in twice weekly ‘pull out’ sessions in addition to learning with their peers in their normal, daily classroom lessons. Results showed that they had improved in all literacy sub‐skills being assessed. Two of them also improved on standardised assessments. All children were observed to be reading (and spelling) more accurately than at the beginning of the project.  相似文献   

发散思维在一例解析几何问题中的实践     

张华  丁文国 《黄山学院学报》2006,8(3):143-144

在学习和教学中培养发散性思维,有助于开拓人的视野,从而激发创新能力。多视角对同一个解析几何问题进行分析和解决,对类似问题的解决富有启发性。  相似文献   

Disrupting a learning environment for promotion of geometry teaching     

Zingiswa Jojo 《Africa Education Review》2017,14(3-4):245-262

Creating a classroom learning environment that is suitably designed for promotion of learners’ performance in geometry, a branch of mathematics that addresses spatial sense and geometric reasoning, is a daunting task. This article focuses on how grade 8 teachers’ action learning changed the learning environment for the promotion of geometry teaching. This was an exploratory study in which a sample of 13 grade 8 mathematics teachers from the rural schools of a district in the Eastern Cape Province in South Africa participated in a project aimed at creating mathematical learning environments through action learning while supporting and promoting the teaching of geometry. The study was qualitative and data was collected using questionnaires, classroom observations and semi-structured interviews with the teachers on a participatory action research conducted in two cycles. Results indicated that 92% of teachers changed their classroom environments by modifying instructional strategies, learner -interactions, and engagements, but could not change how they managed the classrooms due to some factors related to power dynamics andthe education policy. It is recommended that teachers be workshopped on modifying their classroom learning environments while they undergo learning in action on the promotion of teaching and learning geometry in their school defining contexts.  相似文献   

具有网络子系统的产品开发项目评价系统模型   总被引：1，自引：1，他引：1  

杨冰花  李华 《研究与发展管理》2004,16(5):71-76

建立了具有网络子系统的产品开发项目评价系统模型,其中特别考虑新产品与现有产品之间的相关性;用网络分析法对模型进行分析,将这种双向的相关关系体现到整个产品开发项目选择中;最后将该模型应用于实际的开发项目评价。  相似文献   

Tracking control of nonlinear automobile idle-speed time-delay system via differential geometry approach     

Ting-Li Chien  Ching-Yu Hsu 《Journal of The Franklin Institute》2005,342(7):760-775

This paper is concerned with the problem of global asymptotical tracking of single-input single-output (SISO) nonlinear time-delay control systems. Based on the input-output feedback linearization technique and Lyapunov method for nonlinear state feedback synthesis, a robust globally asymptotical output tracking controller design methodology for a broad class of nonlinear time-delay control systems is developed. The underlying theoretical approaches are the differential geometry approach and the composite Lyapunov approach. One utilizes the parameterized co-ordinate transformation to transform the original nonlinear system into singularly perturbed model and the composite Lyapunov approach is then applied for output tracking. For the view of practical application, the proposed control methodology has been successfully applied to the famous nonlinear automobile idle-speed control system.  相似文献   

基于AHP/GRAP的供应商选择研究     

袁亦男 《技术与创新管理》2007,28(1):94-97

文章针对供应商选择过程的复杂性,信息不充分性,建立了一个简捷合理的评价指标体系,并提出了基于层次分析法(AHP)和灰色关联分析(GRAP)相结合的决策模型,通过实例证明了该方法是可行,有效的。  相似文献   

基于AHP的旅游搜索引擎评价分析   总被引：1，自引：0，他引：1  

罗龙艳  窦厚玺 《科技管理研究》2011,31(9)

在简要介绍旅游搜索引擎基本概念和特点的基础上,运用层次分析法建立以流量速度指标、检索范围及功能指标、服务功能指标为一级指标,下设15个二级指标的旅游搜索引擎评价指标体系,探讨合理分配指标权重的方法,指出各指标的数据来源,并用于对目前国内主要旅游搜索引擎的分析,从而得到旅游搜索引擎的发展现状和现今所存在的问题。  相似文献