Existence and uniqueness theorem for flow and heat transfer of a non-Newtonian fluid over a stretching sheet

Analysis is carried out to study the existence, uniqueness and behavior of exact solutions of the fourth order nonlinear coupled ordinary differential equations arising in the flow and heat transfer of a viscoelastic, electrically conducting fluid past a continuously stretching sheet. The ranges of the parametric values are obtained for which the system has a unique pair of solutions, a double pair of solutions and infinitely many solutions.     

Novel dissection of the central nervous system to bridge gross anatomy and neuroscience for an integrated medical curriculum

Medical schools in the United States continue to undergo curricular change, reorganization, and reformation as more schools transition to an integrated curriculum. Anatomy educators must find novel approaches to teach in a way that will bridge multiple disciplines. The cadaveric extraction of the central nervous system (CNS) provides an opportunity to bridge gross anatomy, neuroanatomy, and clinical neurology. In this dissection, the brain, brainstem, spinal cord, cauda equina, optic nerve/tract, and eyes are removed in one piece so that the entire CNS and its gateway to the periphery through the spinal roots can be appreciated. However, this dissection is rarely, if ever, performed likely due to time constraints, perceived difficulty, and lack of instructions. The goals of this project were (i) to provide a comprehensive, step‐by‐step guide for an en bloc CNS extraction and (ii) to determine effective strategies to implement this dissection/prosection within modern curricula. Optimal dissection methods were determined after comparison of various approaches/tools, which reduced dissection time from approximately 10 to 4 hours. The CNS prosections were piloted in small group sessions with two types of learners in two different settings: graduate students studied wet CNS prosections within the dissection laboratory and medical students used plastinated CNS prosections to review clinical neuroanatomy and solve lesion localization cases during their neurology clerkship. In both cases, the CNS was highly rated as a teaching tool and 98% recommended it for future students. Notably, 90% of medical students surveyed suggested that the CNS prosection be introduced prior to clinical rotations. Anat Sci Educ 11: 185–195. © 2017 American Association of Anatomists.     

Exploring students’ engineering designs through open-ended assignments

ABSTRACT

This paper aims at presenting the experience of the Power Conversion project in teaching students to design a proof-of-principle contactless energy transfer system for the charging of electrical vehicles. The Power Conversion is a second-year electrical engineering (EE) project in which students are to gather and apply EE knowledge to design and test a system. This system is to work with power level and operates independent from an electricity grid. The instructional method used in this project is design-based learning (DBL). As an educational approach, DBL is to support students to gather and apply knowledge in open-ended assignments. The set-up of the project has gone through different modifications and iterations in three consecutive years regarding the organisation and supervision of the students. We have analysed the students’ design products in the past three academic years in order to evaluate whether the project set-up and supervision have influenced students’ designs. Results indicate that the open-ended character of the project has a positive influence on the designs especially regarding the criteria on efficiency, Maximum Power Point Tracking algorithm and power tracking.     

The road to nowhere begins with where we are: Rethinking the future of American education

The purpose of this essay is two-fold: to explain briefly the central features and functions of the present system and to suggest why it has become so resistant to meaningful systemic reform; and to articulate several general principles of transformation that must undergird a new vision of education in the 21st century. Our programmatic hope is that others will engage in the kind of serious, ongoing dialogue necessary to open our minds and hearts to both the possibilities and difficulties accompanying any serious effort at systemic reform in American education.     

可拓学与系统工程的内蕴关系探析

从学科背景、研究对象、理论方法、技术手段和应用领域等几个方面初步探讨了可拓学与系统工程之间的内蕴关系．     

关于常系数线性微分方程组特解的求法

证明了当非齐次浑系数线性微分方程组（1）中的函数F（x)为某个常系数齐次线性微分方程组的解时，可以用待定系数法求出（1）的一个特解。这个方法要比一般教材中所用的常数变易法简单得多。     

关于加强和改进高职院校学生党建工作的思考

加强和改进高职院校学生党建工作是党的教育事业的需要，在碗阶段具有十分重要的现实意义和历史意义。要加强和改进学生党建工作，观念创新是前提，健全机制是基础，队伍建设是关键，阵地延伸是手段，党员示范活动是动力。     

一类时滞双曲型微分方程解的强迫振动性

借助其特征方程 ,获得了一类时滞双曲型微分方程解的强迫振动的若干充分条件     

沈家本:中国近代比较法学的开拓者

沈家本开近代中国中西法律横向比较的先河,他通过对中国传统法律沿革得失的认真考察,通过与西方法律的综合比较,得出中西法律可以互补的真知灼见,他在主持清末修律时“会通中西”,翻译和引进西方的部门法学,主张效法西方的法治,改良清朝的司法制度,使中国法制走向近代化的开端。无论从理论上还是实践上,沈家本都不愧是中国近代比较法学的奠基人和开拓者。     

非чeTaeB型非完整系统的精确不变量与绝热不变量

建立非чeTaeB型非完整系统的运动微分方程，基于对称性与不变量理论研究该系统的精确不变量与绝热不变量问题，提出了高阶绝热不变量概念，证明了精确不变量与绝热不变量存在的条件及形式，并举例说明 结果的应用。