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991.
AbstractRouché’s Theorem is a standard topic in undergraduate complex analysis. It is usually covered near the end of the course with applications relating to pure mathematics only (e.g., using it to produce an alternate proof of the Fundamental Theorem of Algebra). The winding number provides a geometric interpretation relating to the conclusion of Rouché’s Theorem, but most undergraduate texts give no geometric insights that lead to an understanding of why Rouché’s Theorem holds. In addition, most texts do not inform students that a stronger version of the theorem exists. In this paper we present a simplified proof of the stronger version, which is a suitable topic for students to pursue as a short project, and provide a geometric argument for the weaker version. Finally, as a project for advanced students, we unpack a standard application of this theorem as used in control systems: the Nyquist stability criterion. 相似文献
992.
简论德国"双元制"职业教育的特点及启示 总被引:1,自引:0,他引:1
高菁 《重庆职业技术学院学报》2006,15(5):1-3
德国“双元制”模式是享誉世界的一种职教模式,这种“双元制”职教模式对德国劳动者的高素质、产品的高质量,以及德国国民经济在国际上的持久竞争力都起着重要的作用。从社会文化背景、企校联合的办学方针以及师资特色等方面评述了以“双元制”为代表的德国高等职业教育的特点,并结合我国的职教现状,提出了发展我国高职教育的一些建议。 相似文献
993.
本文讨论Lotka-Volterra竞争系统连接边界平衡点和正平衡点行波解的存在性。通过变量代换将边界平衡点转化为零点,再利用上下解结合不动点定理得到了当c>c*时行波解的存在性。本文的结果丰富了对Lotka-Volterra竞争系统认识。 相似文献
994.
高等教育大众化的教育质量保障机制是确保大众化高等教育健康发展的必要保证。审视与分析国外发达国家高等教育大众化进程中, 主要的质量保障机制的特征, 无疑对于我们构建有中国特色的高教大众化的教育质量保障机制具有启示和借鉴意义。 相似文献
995.
This paper
reports on the efficacy of a professional development framework premised on
four complex systems design principles: Feedback, Adaptation, Network Growth
and Self-organization (FANS). The framework is applied to the design and
delivery of the first 2 years of a 3-year study aimed at improving teacher and
student understanding of computational modeling tools. We demonstrate that
structuring a professional development program around the FANS framework
facilitates the development of important strategies and processes for program
organizers such as the identification of salient system variables, effectively
distributing expertise, adaptation and improvement of professional development
resources and activities and building technological, human and social capital.
For participants, there is evidence to show that the FANS framework encourages:
professional goal setting, engagement in a strong professional community and
personal autonomy by enabling individualized purpose—all fundamental components
in promoting self-organization. We discuss three meta-level themes that may
account for the success of the FANS framework: structure versus agency,
exploration versus exploitation and short-term versus long-term goals. Each
illustrates the tension that exists between competing variables that need to be
considered in order to work effectively in real world complex educational
systems. 相似文献
996.
Robert F. Tinker 《Journal of Science Education and Technology》1992,1(1):35-48
An emerging technology, geographic information systems, is analyzed in terms of its applicability to mathematics and science education. Examples of possible applications are given, a research agenda is sketched out, and needed characteristics of the software when applied to education are described. 相似文献
997.
This paper discusses how a group leader computer tutor may aid students in learning collaborative skills in a co-operative learning environment. However, students need to learn collaborative skills and practice using them. The group leader computer tutor discussed in this paper is designed on the principles of co-operative learning, intelligent tutoring systems and computer-supported collaborative work within an intelligent collaborative learning system (ICLS). The group leader aims to facilitate group work on the task level and to teach students how to use collaborative skills in the discussion level as students work on networked computers in the Jigsaw method of co-operative learning. The ICLS and its group leader were used by two classes at a liberal arts university. Qualitative research shows that the students' co-operative attitudes changed and academic achievement improved from pre- to post-treatment. Students, especially, used the communication skill of openness in comment type discussions. The students enjoyed working collaboratively through the ICLS and their teachers thought that the experience was valuable for them. 相似文献
998.
讨论了高校合并后多校区图书馆期刊资源整合的必要性与期刊资源整合的各项工作,并提出了期刊资源的整合方案,即资源及数据的重组整合、合理采购与资源共享。 相似文献
999.
提出了考核高等院校中层管理干部的基本原则,构建了干部考核的指标体系,论述了考核体系的正确使用方法. 相似文献
1000.
现阶段我国失业问题加剧的原因分析 总被引:2,自引:0,他引:2
艾惠萍 《福建教育学院学报》2003,4(10):16-17
人口增长对经济发展的持续的压力、经济发展过程中的结构性问题、体制转轨过程中机制转换和竞争加剧以及我国的高劳动参与率等是现阶段我国失业加剧的主要原因。 相似文献