工科复变函数中的迁移教学

迁移是指一种学习对另一种学习的影响.影响学生学习迁移的主要因素有:学生原有知识的准备状态、概括水平、认知结构变量、学习材料的性质、学习的指导.为了能有效促进学生学习正迁移的发生,同时防止学生学习负迁移的发生,在工科复变函数教学中针对其特点采取以下教学策略:注意加强工科复变函数与高等数学的衔接;突出转化和类比的数学思想方法的教学;加强复变函数学习方法的指导.     

两个复变函数的幂级数定义法的教学思考

利用幂级数展开式对复指数和复三角函数进行定义,验证其乘法性质和加法定理,得到其导数.有助于该复变函数概念的引入及其性质的推导.     

可视化在《复变函数》教学中的运用

复变函数作为二维复空间到二维复空间的映射需要四维空间表示,故诸多概念、定理较为抽象,学生理解困难.本文主要介绍了初等函数的可视化与可视化在多连通区域的积分以及黎曼面等教学中的运用,加深学生对知识的理解,提高教师课堂教学效果.     

复变函数与高等数学内容比较与教学实践

复变函数与高等数学同属于分析类课程,有很多相似的知识点.已有的研究更多地专注于将两门课程类比,以提高课堂上的教学效率.本文着重探究两门课程的不同,不仅全面地比较了课程内容,而且探讨了与之相关的典型的教学实施案例,提出具体的实施程序和扼要的关键点.     

平面运动的复变函数方法

前言复变函数理论和方法是解决平面问题的有力数学工具,理论力学中的许多平面问题也可用该方法来解决,如平面力系、平面运动等等。本文就平面运动问题采用复变函数方法来研究,一方面许多工程问题是平面问题,另     

复变函数教学法探讨

复变函数是高等院校工科专业一门重要的基础理论课,它是高等数学的扩展.本文主要探讨在复变函数的教学过程中,教师可以利用"类比"、"转化"和"反例"等教学方法,使学生达到巩固旧知识、探索新课程的目的.     

复变函数arccotz算法的数学基础

这是复变反三角函数研究过程中所写的几篇文章之四。本文为复变反余切函数Arccotz的主值arccotz建立了表达式(10)、(11),为Arccotz建立了新表达式(12)、(13),证明了恒等式(15)在复域中仍成立,进而详尽地研究了arccotz的映射性质。本文不仅指出并更正了[1]中4.4.8式及图4.4里的有关错误,而且(10)或(6)、(9)可以成为我们构造arccotz有效算法的数学基础。     

高师院校复变函数课程教学改革的探索

结合多年的教学实践和高师院校的特点,分析了复变函数课程教学中存在的问题,并提出了一些教学改革设想,如改革课程内容,进行教材建设,渗透数学文化,加强网络教学等,期望能为该课程的教学改革抛砖引玉.     

大学复变函数课程与高中数学的衔接

分析近二十年来高中数学经历的三次重要改革中复数部分教学内容、要求的变化和大学数学与应用数学专业复变函数教材处理复数部分的状况.在此基础上,给出大学复变函数课程关于复数部分的一些教学建议.     

关于复变函数与积分变换课堂教学的思考

讨论随着当今高等教育的快速发展,应如何用科学发展的眼光调整与完善“复变函数与积分变换”的教学内容、改进教学方法和充分利用现代信息化的教学手段。介绍在课堂教学中的一些做法和体会,应用综合分析的方法讨论了以下三点内容：完善教学内容、改进教学方法和更新教学手段。     

复变量广义Airy函数

本文详尽研究了在波传播与流动稳定性问题中有广泛应用的广义Airy函数,给出了复变量广义Airy函数的一系列图表.计算结果是令人满意的.     

Bloch Functions in Several Complex Variables, I

Bloch functions on the unit disk are those analytic functionsf for which the quantity |f'(z)|(1 – |z|²) is bounded(for z in the disk). In this paper, Bloch functions on boundedhomogeneous domains in complex m-space are studied. The mainresult shows that many of the equivalent definitions of Blochfunctions on the unit disk are also equivalent in the generalsetting. Current Address: 39 Trinity College, Dublin 2, Ireland.     

Hyperplane Singularities of Analytic Functions of Several Complex Variables

A new class of non-isolated singularities called hyperplane singularities is introduced. Special deformations with simplest critical points are constructed and an algebraic expression for the number of Morse points is given. The topology of the Milnor fibre is completely studied.     

Teaching Mathematics and Science in Urban Elementary Schools

Elementary teachers from a large urban school district with a 74 percent minority student population were surveyed to assess their capacity to provide quality mathematics and science instruction. Forty-nine percent of the surveys distributed to a random sample of teachers were returned. Both strengths and barriers to capacity building were identified. Strengths included use of collaborative student work, manipulatives, informal learning environments, and alternative assessment practices; availability of calculators and computers; and high expectations for student learning. Barriers included lack of professional development, infrequent science instruction, limited calculator use, lack of planning time, inadequate resources, and the perception that science was not valued as highly as mathematics.     

Distortion Properties of Holomorphic Functions of Several Complex Variables

Let Q(D) be a class of functions q, q(0) = 0, |q(z)| < 1 holomorphic in the Reinhardt domain D ? C ⁿ, a and b — arbitrary fixed numbers satisfying the condition — 1 ≤ b < a ≤ 1. ??(a, b; D) — the class of functions p such that p ? ??(a, b; D) iff for some q ? Q(D) and every z ? D. S*(a, b; D) — the class of functions f such that f ? S*(a, g; D) iff S^c(a, b; D) — the class of functions q such that q ? S^c(a, b; D) iff , where p ε ??(a, b; D) and K is an operator of the form for z=z₁,z₂,…z_n. The author obtains sharp bounds on |p(z)|, f(z)| g(z)| as well as sharp coefficient inequalities for functions in ??(a, b; D), S*(a, b; D) and S^c(a, b; D).     

多复变解析函数的一个非线性边值问题

该文讨论多复变解析函数的一个非线性边值问题；利用积分方程方法和Schauder不动点定理证明了问题解的存在性和积分表示式以及线性情况下解的唯一性.     

Technology Use in the Teaching of Mathematics and Science in Elementary Schools

Principals from 80 elementary schools, in predominantly rural Western Pennsylvania, completed and returned a 22-item questionnaire designed to assess the nature and extent of technology use for the teaching of elementary mathematics and science within their buildings. Technologies included calculators, microcomputers, overhead projection panels, videotape, and interactive video. Microcomputers were being used in at least some elementary grade levels for mathematics or science instruction in 84% of the schools. Teachers used microcomputers more frequently in mathematics (82.5%) than in science instruction (55%). Principals reported a lower frequency of calculator use with 63.3% of the schools having some grade levels where calculators were used in mathematics lessons, and 21.5% of schools in science lessons. Further analyses of data suggest that microcomputer and calculator use is more common in the intermediate grades (3–6) than in the primary grades (K-2).     

多复变整函数涉及全导数的唯一性定理

结合金路提出的多复变上整函数全导数的概念,得到了如下定理:对于n维复欧式空间C~n上两个非常数整函数f和g,以及一个正整数k,如果δ(0,f)+δ(0,g)1,D~kf=1D~kg=1,那么f≡g.这一结论是仪洪勋和杨重骏的定理的推广.