“Seeking Information from the Lips of People”: oral history in the archives of Qatar and the Gulf region

The turn to oral history in Qatar and the Arabian (also known as Persian) Gulf is not a rejection of traditional archival authority as has been the case in other parts of the world. In the Gulf, oral history has been embraced out of a desire to fill the silences of the largely unwritten record attributable to previous low levels of literacy and strong oral traditions in the region. Today, oral history is seen as the best method to capture details about traditional ways of life during the pre-oil era. After discussing archival concerns about the evidentiary nature of oral histories, this paper explores how it has come to be a crucial documentation tool in the Gulf, adapted to the specific nation building and cultural heritage priorities of the region.     

一种基于加权关联规则的协同推荐算法

协同过滤技术不需要分析待推荐资源的内容信息,在电影、音乐、图书等非结构化数据占主流的电子商务推荐领域得到了广泛的应用,成为电子商务推荐领域的主流技术.针对基于项目的协同过滤算法不能实现"跨类型"推荐的缺点,本文提出了一种新的基于关联性评分预测的协同过滤算法IAPCF.区别于传统的算法,IAPCF算法根据项目之间的关联规则,而不是根据多用户对项目评分形成的向量间的相似度来寻找项目的最近邻居集合.该算法能较好地实现"跨类型"项目的推荐.实验结果表明,IAPCF算法具有更好的推荐精度.     

高校图书馆学生用户信息素养培育的研究

分析了高校图书馆学生用户信息素养的现状及成因,提出了培育高校图书馆学生用户信息素养的思路,认为转变教育观念,提升学生的信息知识,让学生参加信息检索,创造良好的社会信息素养培育环境,建立一支高素质的"信息检索课"的教师队伍是提高大学生用户信息素养的重要措施.     

A Geohistorical Study of ‘The Rise of Modern Science’: Mapping Scientific Practice Through Urban Networks, 1500–1900

Using data on the ‘career’ paths of one thousand ‘leading scientists’ from 1450 to 1900, what is conventionally called the ‘rise of modern science’ is mapped as a changing geography of scientific practice in urban networks. Four distinctive networks of scientific practice are identified. A primate network centred on Padua and central and northern Italy in the sixteenth century expands across the Alps to become a polycentric network in the seventeenth century, which in turn dissipates into a weak polycentric network in the eighteenth century. The nineteenth century marks a huge change of scale as a primate network centred on Berlin and dominated by German-speaking universities. These geographies are interpreted as core-producing processes in Wallerstein’s modern world-system; the rise of modern scientific practice is central to the development of structures of knowledge that relate to, but do not mirror, material changes in the system.

彩色自然风景图片的四季特征提取

根据彩色自然风景图片的特点,提出"天空去除"和"1/2区域分析"改进法提取图像的颜色特征,同时采用四季轮盘调查法收集用户评价,然后通过多元线性回归方法建立颜色特征与用户评价的映射关系,用于彩色自然风景图片四季特征的自动提取.通过实验验证了该映射机制对于正确预测彩色自然风景图片四季特征的有效性.     

农村青年教师专业成长现状调查报告——以四川省成都市新都区为例

农村青年教师指生活在县以下的乡镇和村落,年龄在35周岁以下,以农村学生为教育对象的教育工作者。为了准确、深入地了解农村青年教师专业成长现状及其影响因素,以便为广大农村青年教师专业成长提供必要的帮助,同时,也为相关部门科学决策提供可靠的依据,我们于2005年9～10月对四川省成都市新都区农村青年教师专业成长现状进行了问卷调查。具体情况如下