Increasing environmental awareness and stringent environmental regulations have motivated many companies to incorporate ecodesign into product development.To as
Aiming at solving the azimuth signal aliasing problem in the Doppler domain, the azimuth time aliasing problem after range cell migration correction(RCMC) and t
著名发展心理学家皮亚杰的研究显示,学生在学习科学课程之前,头脑里并非是一片空白,他们在日常生活中,对客观世界中的各种事物已经形成了自己的看法,并无形中养成了各自独特的思维方式。这种在接受正规的科学教育之前所形成的概念一般称之为科学前概念(The concept of Science),简称前概念。在实际教学实践中不难看出,前概念最大的一个特点就是顽固。本文就着重从前概念的转变条件入手,分析并介绍前