非线性双重退缩抛物方程解有耗竭

研究非线性双重退缩抛物方程第一初边值问题的耗竭性，应用能量方法，对具零Dirichlet边界条件和非负初值的方程，给出了解在有限时间内耗竭的充分条件，从而推广了Tsutsumi M等人的结果。     

中文学术型纸本馆藏消亡的时间:来自文学的例证

[目的/意义] 判断高校图书馆学术型馆藏的数字化趋势,预估纸本馆藏的消亡时间,为高校图书馆服务转型和资源采访提供参考。[方法/过程] 跟踪分析2009、2011、2013-2016共6年文学院教师所引用文献的数字化比例,以折线图描述中外文图书、期刊报纸的数字化趋势;利用对数函数预估中文图书纸本馆藏的消亡时间。[结果/结论] 中文图书2033-2041年间将100%数字化,中文期刊报纸当前已接近100%数字化;2041年,中文学术型文献即无需存在纸本馆藏; 网络共享平台成为新兴的知识获取渠道; 文献版权、网络共享平台、研究者的文献需求变化都影响文献的数字化趋势。     

植物物种绝灭风险指标体系及评价标准

通过介绍国际国内已建成的评价生物物种绝灭的风险指标体系中的植物物种绝灭风险指标体系及评价标准,明确了各评价体系的实施机构、评价范围及物种等级的划分标准,从而可以更好地促进我国受威胁植物物种的保护工作.     

Pedagogy at the brink of the post-anthropocene

Abstract

The significance of educational research is today predicated on its ability to engage with the ecological, economic, and political challenges of the anthropocene, for where we might take seriously education’s commitment to the future necessitates a sustained encounter with the implications and questions raised in the wake of ‘our’ mutated planetary ecology. To repeat in the image of those educational practices, models and patterns of thinking that have contributed to the contemporary ecological crisis of the planet falls gravely short of apprehending what it might entail to live (and die) in the contemporary moment. Yet further, where education is intimate to teleology, it is today clear that the image of the future posited educationally has fallen out of synch with the ‘outside thought’ of ecocatastrophe, or rather, our being ‘thought’ from the inhuman perspective of a planet destined to go on without us. Educationally, this threat poses a quite remarkable opportunity, for where human thought might be doomed to extinction, the question of how and where we might think assumes urgency. In this vein, this essay explores the wisdom that ‘we’ are and will be thought from perspectives alien to human desire becomes a catalyst for how educational research might be rethought otherwise in a more-than-human world.     

Lawson’s Shoehorn, Reprise

Lawson’s (Lawson, A.: 2004, Science & Education, 13, 155–177) analysis of the meteorite hypothesis of dinosaur extinction exhibits flaws similar to his earlier (2002) analysis of Galileo’s discovery of Jupiter’s moons (Allchin, D.: 2003, Science & Education, 12, 315–329).     

Bringing Dinosaur Science to the Junior Girl Scouts Through a College Service-Learning Project

Undergraduate students in an introductory-level geoscience course successfully designed and conducted a science badge day for the Junior Girl Scouts. With national concerns that girls turn away from science at a young age, a service-learning project was incorporated into a college course with the end result providing a group of girls a positive and fun science-learning experience. A number of science and technology badges exist for the Girl Scouts, yet not many of these badges have been completed because of a lack of confidence the troop leaders have in teaching science and a paucity of scheduled science events for the leaders to take their girls. Junior Girl Scout troops were invited to the Pennsylvania State University Delaware County campus to complete a series of hands-on dinosaur science activities that allowed them to earn the Science in Everyday Life badge. At the conclusion of the badge event, the girls reported a greater interest in science, a desire to learn more science, and a desire to complete additional science-related Girl Scout badges.     

关于波片光轴确定的探讨

从理论与实践两方面来讨论波片光轴的确定，并对实验中存在的问题进行探讨。     

半线性热方程解的熄灭与区域的相关性

研究半线性热方程第一初边值问题解的熄灭性，应用能量方法，对具零Dirichlet边界条件和非负初值的热方程u1-△u=u-λ|u|^p-1u，给出了一个导致解在有限时间内熄灭的与区域相关的充分条件。     

浅析电力系统中性点接地方式

章通过分析电力系统中性点不同接地方式下的特点，解析我国电力系统从低压配电网到高压电网采用不同接地方式的主要原因。     

峨眉山大火成岩省火山活动与中、晚二叠世之交生物大灭绝

2009年5月29日出版的国际知名刊物Science道了一项由英国利兹大学和中国地质大学(武汉)为主合作完成的研究成果[1],首次报道了峨眉山玄武岩火山喷发、生物灭绝同时发生,并紧接着伴随有碳同位素负偏,提供了目前为止火山活动能导致生物灭绝最直接的证据.