【摘 要】
：
It has been more than a year since Don left us.He left us so suddenly.We planned to have a phone call after he settled down at his new house.However,it never happened.Although he had some medical issues persi-stently in his last year,he had been so dedica
【机 构】
：
Laboratory of Seismology and Physics of Earth’s Interior,School of Earth and Space Sciences,Universi
论文部分内容阅读
It has been more than a year since Don left us.He left us so suddenly.We planned to have a phone call after he settled down at his new house.However,it never happened.Although he had some medical issues persi-stently in his last year,he had been so dedicated to science that he kept working on multiple papers about Earth\'s deep interior.Our unfinished paper is about to provide an alternative explanation of the anomalous SPdKS+SKPdS,which has been routinely used to image the Ultralow Velocity Zone(ULVZ).I am so grateful to Don that he brought me into the deep Earth,taught me how to read seismograms,and always inspired and supported me as my family.
其他文献
Donald V.Helmberger was an unparalleled observa-tional seismologist,and theoretician.His pioneering work in seismic waveform modeling,and the numerical methods he developed to simulate seismograms to study the structure of the Earth and the nature of eart
You might find it hard to believe,but I went to Caltech\'s Seismological Lab for my Ph.D.on a football scholarship.Well,perhaps I should explain.I received my M.S.in Geophysics(Earthquake Seismology)at University of Arizona in 1986,under the tutelage of
I arrived at Caltech in June 1986,with interests in both mineral physics and seismology.I was excited to either study mineral physics with Professor Tom Ahrens,or investigate great earthquakes with Hiroo Kanamori.Upon arriving,I decided seismology would b
伴随着新课程改革的不断深入,多媒体信息技术已经在小学体育课堂中不断运用,通过华丽的文字、清晰的图片、美妙的声音和生动的动画等帮助教师教学,可以更加直观地给学生解决疑惑,为学生提供生动形象的学习环境.这种新技术的运用会提高学生的学习兴趣,激发学生学习的积极性,满足学生的求知欲,来辅助体育课堂更好地提高教学质量,完成既定的教学目标和教学任务.
一、问题的提出rn语文课程的基本特点是工具性与人文性的统一.学生生活在一个真实的世界中,身边的人物、事情、景物都会对其产生深远的影响.而合理开发利用课程资源,同语文教学实际和学生的学习有机地结合起来,丰富优化语文教学内容与形式,才能更好地促进学生语文素养的全面提升,切实助力小学语文教学更好地实现“减负提质”的目标.
在生命科学这一领域的日常教学活动中,教师经常考虑的是如何顺利地完成教学任务,而对是否达到了最佳教学效果,可能较少关注.因此,笔者想结合教学实践,谈谈在生命科学的教学活动中如何提高教学效果,培养学生对生命世界的热爱和对生命科学的关注.
习作是语文课程的重要组成部分,习作水平的高低是语文核心素养水平的重要体现.《义务教育语文课程标准》明确指出:“写作教学应让学生易于动笔,乐于表达;写作教学应抓住取材、立意、构思、起草、加工等环节,指导学生在实践中学会写作;应重视引导学生在自我修改和相互修改中提高写作能力.”如何让学生乐于写作、积极参与写作实践,掌握修改习作的方法,提高习作水平,笔者认为恰当使用评价策略不仅可以激发学生的写作兴趣,而且可以有效指导学生修改习作,达到提高习作水平的目的.
课堂是教学的“主阵地”,课堂中的重点、难点就是这阵地中的“堡垒”,攻克“堡垒”的方法是教学成功的关键.选择恰当的方法突破重难点,可以使学生更容易理解与掌握知识,学生的思维会更活跃,课堂会令人眼前一亮.
在初中体育课堂教学中需要落实生本教学理念,根据学生的学习兴趣设计教学环节是体现生本理念及提升体育有效性的重要途径.因此,教师一定要认识到明确学生兴趣因素的重要意义.本文从学生自身因素、教师教学因素及家长因素三个方面对影响学生兴趣的内因与外因进行了分析,希望能给初中体育教学有益启示与参考.
When I received the shocking news on August 13,2020 that our beloved Don passed away,I was deeply saddened.The feeling was worsened by the COVID-19 pandemic that essentially locked down everything so most of us were not able to attend his memorial ceremon