《流体输配管网》课程教学关键问题探讨

《流体输配管网》是建筑环境与设备工程专业的重要核心课程,为改进教学方法,总结归纳了作者多年的教学经验,形成了基本设计法,指出了教学的关键是构建系统的理论构架和知识的应用,提出了工程案例教学法。同时,教材和实验室建设也是该课程教学重要的内容。     

SCHOOL READINESS

A theoretical contribution to the discussion of school readiness and a follow‐up investigation conducted over 4 years with children in ‘school‐readiness classes’ and a group of children from ordinary classes.     

Yi-Gang Xu: the Earth's deep interior holds the key to habitability

The deep Earth is the engine of whole Earth systems and plays a key role in surface evolution and geological hazards. Scientists have been deciphering the internal processes that shape our habitable planet, especially since the formulation of plate tectonics theory. To date, how the deep Earth works remains mysterious. At the end of 2020, the Chinese Academy of Sciences (CAS) started to set up the Center for Excellence in Deep Earth Science, headquartered in the Guangzhou Institute of Geochemistry (GIG), with long-term support for these emerging and interdisciplinary research areas. NSR recently talked to Professor Yi-Gang Xu, GIG’s Director, about why the study of the Earth''s interior is essential, the current progress of deep Earth science in China, and what makes our planet habitable.     

跨越世纪的中法文化交流

2014年是中华人民共和国与法国建交50周年纪念.中法两国之间的文化和思想交流源远流长.来自法国的思想对近现代世界产生了巨大影响.以法国为中心的17至18世纪的欧洲启蒙运动对文艺复兴继往开来,创造出了人类历史上的一个重要时期,彻底改变了欧美,整个世界至今都能感受到启蒙时代思想家们的力量.     

On stabilisability of 2-D MIMO shift-invariant systems

We concentrate on the linear spatially distributed time-invariant two-dimensional systems with multiple inputs and multiple outputs and with control action based on an array of sensors and actuators connected to the system. The system is described by the bivariate matrix polynomial fraction. Stabilisation of such systems is based on the relationship between stability of a bivariate polynomial and positiveness of a related polynomial matrix on the unit circle. Such matrices are not linear in the controller parameters, however, in simple cases, a linearising factorisation exists. It allows to describe the control design in the form of a linear matrix inequality. In more complicated cases, linear sufficient conditions are given. This concept is applied to a system with multiple outputs—a heat conduction in a long thin metal rod equipped with an array of temperature sensors and heaters, where heaters are placed in larger distances than sensors.     

Students in Higher Education Governance in Europe: Contrasts,commonalities and controversies

Tertiary Education and Management - This article provides a synthesizing overview of the roles of students in higher education governance in Europe. We first review the existing literature on...     

大学与中小学伙伴协作:美国教师教育中的实践

美国职前教师教育专业计划是与教师准备任教的学生年龄段及科目相对应的,其中特别强调师范生获取大量的教育现场经验。美国在职教师教育的特点主要有,安排经验丰富的教师指导新教师;在职教师必须进行持续的学习。为改进教师教育的质量,美国普遍推行建立大学与中小学之间的伙伴协作关系,其采取的主要形式是建立专业发展学校。专业发展学校的使命有:为教师候选人提供专业准备、促进指导教师的专业发展、开展旨在改进教学实践的探究、提高学生的学业成绩。在美国,大学与中小学之间的伙伴协作既取得了明显的成效,也面临着多方面的挑战。