Aspects of ‘relevance’ in the alignment of curriculum with educational standards

With over 60,000 US K-12 science and mathematics education standards and a rapid proliferation of Web-enabled curriculum, retrieving curriculum that aligns with the standards to which teachers must teach is a key objective for educational digital libraries. However, previous studies of such alignment use single-dimensional and binary measures of the alignment concept. As a consequence, they suffer from low inter-rater reliability (IRR), with experts agreeing about alignments only some 20–40% of the time. We present the results of an experiment in which the alignment variable was operationalized using the Saracevic model of relevance ‘clues’ taken from the everyday practice of K-12 teaching. Results show high IRR across all clues with IRR on several specific alignment dimensions significantly higher than on overall alignment. In addition, a model of overall alignment is derived and estimated. The structure and explanatory power of the model as well as the relationships between alignment clues differ significantly between alignments of curriculum found by users themselves and curriculum found by others. These results illustrate the usefulness of clue-based relevance measures for information retrieval and have important consequences for both the formulation of automated retrieval mechanisms and the construction of a gold standard or benchmark set of standard-curriculum alignments.     

辽西大樱桃沟金矿床地质特征及成因探讨

大樱桃沟金矿床赋存于大巴—瓦子峪—后三角山韧性剪切带的北东端,严格受北东向和近东西向脆性断裂控制。金矿体产于太古代的二云(或黑云)长英质超糜棱岩和白云母糜棱片岩内,并以含金石英脉型为主,具有矿体形态复杂,矿石类型和结构、构造多样,矿物成分和金的赋存状态简单,含金品位相对较高的特点。围岩蚀变表现为面型硅化、绢云母化、绿泥石化。根据控矿因素分析,矿床的形成经历了多阶段、多期次的成矿作用,构造活动导致花岗质岩体侵入并形成变质热流体,萃取矿源层(太古宙变质岩)中的金元素,沿剪切带上升至韧性向脆性转变的深度位置上沉淀下来,并在韧性剪切作用过程的晚期形成金矿体。因此,大樱桃沟金矿床属太古宙绿岩建造中的后韧性剪切带型金矿床。     

中国金矿资源开发中的生态足迹分析

基于生态足迹理论和方法,对中国金矿资源开发利用效率与环境压力作定量研究。结果表明:1994年-2001年中国金矿石生态足迹总体呈上升趋势,但波动较大,究其原因,钢铁、木材和电力消耗是影响总量趋势变化的关键因素;研究期内单位金矿石产出的生态资源消耗量呈现下降趋势,资源效率不断提高,资源开发规模效应显现;从结构上看,能源消费是金矿石生态足迹的重要来源,但与有色及钢铁等全行业最终产品相比,初级产品金矿石的能源足迹所占比重明显较低,矿山占用地和工业品携带能源足迹在金矿石足迹结构中也占有重要的地位。研究不仅为矿产品生态足迹提供了计算框架及范式,也刻画了矿产资源开发利用中资源和生态付出的代价,或可为矿产资源开发的生态补偿政策研究提供理论依据。     

难浸金矿氧化预处理方法评述

介绍了难浸金矿用焙烧法,加压氧化法和细菌氧化法预处理的原理,工业实践及几种方法的技术经济比较。     

论体育强国的缺失

运用文献资料法查阅了国内学者对＂体育强国＂的界定。分析了金牌折射下中国体育的硬伤,指出已经成为金牌大国的我们与体育强国相比,缺少的是体育文化,从物质文化、制度文化、精神文化入手来讨论如何从金牌第一的竞技体育强国向真正的体育强国转变。     

GDERS在西藏高校图书馆中的应用

电子阅览室是现代图书馆读者阅览本地资源和搜索网络资源的主要场所,本文主要介绍了金盘电子阅览室管理系统的功能及在西藏高校图书馆中的应用情况。     

《金瓶梅词话》作者为武进作家白悦续考

在笔者系列论文的第一篇《（金瓶梅词话）作者为武进作家白悦》之后,从皇甫济为白悦诗文集《白洛原遗稿》所作的序、徐阶为白悦撰墓志铭及《金瓶梅词话》内证等入手,可以进一步证实《金瓶梅词话》的作者为江苏武进作家白悦,并由此对这部小说的最早传播作出合理的推测。     

情欲挤压下的心理畸变——用弗洛伊德性论解读曹七巧形象

运用弗洛伊德的性论解读《金锁记》中曹七巧的形象,可以得出如下结论：曹七巧心理的畸变,从某种程度上说,是其情欲受到压抑变相释放的结果。在情欲的挤压下,曹七巧历经了三次心理畸变,使其人性扭曲,人生错位。     

Kalgoorlie as the Global Centre for Gold Metallurgical Innovation 1902-1907

Faced with the problem of how to process valuable refractory sulphide ore in the early 1900s, Kalgoorlie mining engineers and metallurgist, and their consultants, borrowed ideas from a variety of international sources to develop new equipment and new procedures. This paper examines the sources of these innovations and how they spread with remarkable speed through the medium of the tight-knit group of international metallurgical consultants. The inter-relationship between international technological transfer and increased local inventiveness, stimulated by the rapid changes in technology, and the opportunities and limitations experienced by Australian metallurgical inventers in the 1900s are also examined.     

从文献计量学解析LeoEgghe的科学成就与影响

主要利用文献计量学的方法,对科学计量学最高奖——普赖斯奖获得者埃格赫(Leo Egghe)从学术生涯开始至今发表的论文进行定量分析。对埃格赫发文的时间、领域、引文等方面做了详细解读,全面展示其在科学计量学的杰出成就和重要影响。