基于Oasis montaj平台的磁法数据处理解释研究

高精度磁法勘探是常用的地球物理方法,随着新的数据处理的出现和资料解释技术的提高,其应用领域越来越广泛,并且数据处理软件也层出不穷,如RGIS、Geosoft等等。本文通过对玉华山部分地区磁法数据利用Geosoft的Oasis montaj平台的数据存取、可视化、处理、成图及图形输出进行了解开发。对其进行克里格(kringing)网格化、化磁极和垂向一阶导数成果图,并生成3D图。再经过RGIS,用同样的方法得出成果图,并将其进行对比,突显出哪种软件效果更明显,对其解释更好,从而判断哪种软件在高精度磁法数据处理更有利。     

缩短发表时滞 提高论文的时效性

论文的发表时滞是评价一种期刊好坏的重要指标。对一些国际知名期刊和我国一些期刊的发表时滞进行了统计和分析。结果表明，我国期刊的发表时滞相对于国际知名期刊偏长。为了缩短发表时滞，提出了几点建议：缩短刊期；加速全文上网；栏目设置多样化；加快稿件的处理；加大退稿率；工作流程实现现代化。     

体育课程资源的分类研究

随着课程改革的深入,课程资源的重要性逐渐显现出来.越来越多的基础教育工作者投入到开发与利用课程资源的行列中来.通过对体育课程资源的分类研究,认为体育课程资源应该从物质的和非物质的两方面去划分,更能全面认识体育课程资源,从而更加科学有效地对体育课程资源进行开发和利用.     

Learning from direct instruction: Best prepared by several self-regulated or guided invention activities?

Learning from direct instruction can be enhanced by preparatory invention tasks: students invent an index that allows to differentiate a set of cases regarding important aspects (self-regulated). However, contradictory results have been found. As self-regulated activities often need practice, we tested whether the contradictory findings persist when students can practice inventing. We randomly assigned 99 eighth-grade students to two conditions (independent variable): they either invented twice (self-regulated; n = 49) or worked through worked solutions of the two tasks (guided; n = 50) before learning about ratios in physics from a lecture. Extraneous load, deep-structure recall, knowledge-gap perception, and self-efficacy were potential mediators. Transfer was the dependent measure. Guidance led to less extraneous load. However, self-regulation led to higher transfer because the students devoted more attention to the deep structure of the preparation tasks. Our findings suggest that—given some practice—self-regulated outperforms guided preparation for learning from direct instruction.     

On Media Concentration and the Diversity Question

Corporate mergers and the consolidation of ownership in the American communications arena have long been sources of concern. U.S. regulatory and antitrust policy traditionally attempted to secure a “diversity of voices” structurally, largely through rules regarding ownership. Although the meaning of diversity was always problematic and undertheorized, the Federal Communications Commission long set ceilings on the numbers of broadcast outlets any single person or corporation could own and enacted cross-ownership rules such as a prohibition against a corporation owning a newspaper and broadcast outlets in the same market. These rules, and the FCC's authority to make them, were upheld, occasionally even compelled, by the federal appellate courts. In the last 20 years, however, legal trends, in conjunction with political developments, have undermined the diversity rationales behind ownership rules and associated structural regulations of mass media. Paradoxically, even as media corporations are becoming larger and presumably more powerful, ownership regulations are being rescinded or struck down. This article explains this history. It concludes with a suggestion that the First Amendment metaphor of a marketplace of ideas is misplaced, and of how our thinking about media ownership and diversity might be better served by the metaphor of a mixed media system.     

浅析《大学物理实验》课程的教学改革与实践

针对大学物理实验课程的特点,结合合肥师范学院物理与电子工程系多年的办学经验和教学科研条件,本文系统研究了大学物理实验课程教学手段、教学内容、教学方法等方面的改革,总结了技术应用型人才培养模式的创新经验与特色,旨在深化教学改革,努力培养有特色的高素质应用型人才。改革后的实践表明,大学物理实验教学质量有了明显的提高,学生的创造性思维能力和实际动手能力得到了加强,学生的综合素质也有了很大的提高。     

清华物理与晚近中国——兼论旗舰大学与民族国家的互动

南京政府初期,清华在短短几年间崛起为世界级学府,其物理学科尤为卓越。该系不仅在全国遥遥领先,且有着很高的国际能见度。该系有着优秀的人才机制,其人才储备与办学经验主要受益于加州理工学院和芝加哥大学;在办学实践中,该系注重研究、尤重实验,并在通才教育的基础上,实行个性化的天才教育;该系还注重组织文化建设,从而最终形成了强劲的创新机制和柔性高效的大学制度。其科研工作已跃居远东顶尖水准,该系师生成为在国际顶尖期刊发表成果的主要的中国学人群之一;其本科教育,已接近欧美顶级大学的标准;其成材率极高,在几年间就孕育了一二十位世界级学者。他们对中国的学术独立和民族独立有着巨大贡献,对中国的工业化、国防建设和民族复兴亦影响深远。     

试论爱伦·坡小说的几个特点及其成因

19世纪美国著名小说家爱伦.坡的小说,偏爱冷色调,常以恐怖、变态心理为主要内容,对人物的双重性格的刻画细致入微,善于用作品的幻想表现他本人的清醒与睿智,强调文章应产生的效果,并且善于用第一人称来宣泄自身情感。这一系列特点的形成,与爱伦.坡本人的身世成长经历及其爱好密不可分。     

粒子物理开放存取出版资助联盟简介与评价

粒子物理开放存取出版资助联盟(SCOAP3)致力于把全世界范围内粒子物理研究机构和图书馆组织起来,把它们用于订购粒子物理期刊的订购经费转变为支持这些期刊进行开放存取出版的资助经费,通过这一资助模式实现粒子物理领域全部高质量期刊的开放存取出版。SCOAP3资助模式具有科学合理的运作流程,可节省粒子物理科研机构、图书馆订购期刊的费用,为出版商提供稳定的收入,并且取消作者出版费用的做法也使出版商获得更多的投稿支持。     

从十万卷楼抄本《章学诚全集·士习》看《文史通义·感遇》的文本写定

嘉业堂刻《章氏遗书》本《文史通义》标注有目无文的《士习》一篇,其实并未逸失。《士习》篇最早由周作人从十万卷楼抄本《实斋全集》中发现,并刊布在《国立华北编译馆馆刊》1943年第2卷第5期的开卷第一篇。由于时值日本侵华,且《馆刊》流通不广,这一发现并未引起学界的注意。十万卷楼抄本《实斋全集》今藏国家图书馆,经查阅,《士习》篇确实保存在第5册之中。《士习》并非如周作人跋语所说是《文史通义》内篇《知难》的初稿,而是《感遇》篇的初稿。通过《感遇》与《士习》16则歧异文句的文本比勘,可微观考察章学诚对著述删润写定的不同形式,并进而体察章氏学术思想与行止心境的变迁。