润神口服液对小鼠生长状况的影响

润神口服液1号和2号给小鼠腹腔注射,结果显示试验早期对小鼠生长有增重效应(P<0.05),晚期无明显影响。体重增长似与饮食量无关。实验提示注射口服液的小鼠对植物血凝素(PHA)刺激可能有一定稳定和调理机体机能状态的作用。     

虚拟机在计算机实践教学中的应用

针对目前计算机实践教学中存在的问题,提出了一种虚拟机技术的解决方法。该方法不仅充分有效地利用现有设备,而且对硬件及系统具有很好的安全性,并能够增加学生的实践动手机会。教学上更加灵活、方便地设计实践项目,从而提高实践教学的质量。     

满足用户个体需求的图书馆开放平台设计-基于OpenAPI、App、Mashup、SOA的集成实践应用

伴随互联网信息组织活动发展的三个阶段:分类导航、关键词重组信息和多元化网络应用集成,门户网站、搜索引擎和开放平台先后成为三代互联网的主打产品。在新的网络环境下,图书馆应顺应时代潮流开发开放平台以展现自身的优势资源。开放平台以OpenAPI为技术支撑,实现三大基本职能:(1)以内容为纽带,整合图书馆、数据厂商和互联网上的文献资源。(2)以用户为纽带,联通图书馆各个系统的服务功能。(3)以用户关系为纽带,收集散落于图书馆内部、图书馆之间、区域内乃至更广领域的信息碎片。该文对互联网现有的OpenAPI进行梳理并分类,运用SOA理念设计图书馆开放平台的系统架构,实现了基于OPAC的文献信息集成平台,基于OAuth的用户借阅管理平台和联合目录、文献传递与Google地图的Mashup增值应用。     

图书情报学中的“知识流派”观点述略

综合论述图书情报学中“知识流派”的主要观点。重点介绍和评价知识交流、知识组织、知识服务、知识管理研究的人物及其观点。     

社会网络分析在团体知识共享中的应用

从某科研团队出发,通过问卷调查得出成员间的知识交流矩阵,利用社会网络分析法的相关可视化工具绘制出团队成员间的知识交流图。然后从整体结构、节点中心度、小团体等角度来分析该科研团队的知识交流共享状况,发现团队中的关键人物、知识流动的瓶颈和孤立点。这些信息有助于发现组织的知识共享问题与特点,可以作为组织改善知识共享的客观依据。     

数字方志文献外字基本属性研究

文章介绍了外字查重、外字属性编制、外字出处标引、研究成果应用等内容。研究成果已经作为国家提案向国际标准化组织ISO／IEC JTC1／SC2／WG2／IRG工作小组正式提交。     

Opinion-based entity ranking

The deployment of Web 2.0 technologies has led to rapid growth of various opinions and reviews on the web, such as reviews on products and opinions about people. Such content can be very useful to help people find interesting entities like products, businesses and people based on their individual preferences or tradeoffs. Most existing work on leveraging opinionated content has focused on integrating and summarizing opinions on entities to help users better digest all the opinions. In this paper, we propose a different way of leveraging opinionated content, by directly ranking entities based on a user’s preferences. Our idea is to represent each entity with the text of all the reviews of that entity. Given a user’s keyword query that expresses the desired features of an entity, we can then rank all the candidate entities based on how well opinions on these entities match the user’s preferences. We study several methods for solving this problem, including both standard text retrieval models and some extensions of these models. Experiment results on ranking entities based on opinions in two different domains (hotels and cars) show that the proposed extensions are effective and lead to improvement of ranking accuracy over the standard text retrieval models for this task.     

基于条件随机场的学术期刊中理论的自动识别方法

[目的/意义]从学术期刊中抽取其中的理论是对文献进行内容分析的前提,实现理论名称识别的自动化可以提高内容分析的效率。[方法/过程]将理论识别视为一类命名实体识别问题,总结现有的命名实体识别的常用方法,提出一个基于语义泛化思想的命名实体识别方法,选取词性、知网义原等外部知识,采用CRF模型对《情报学报》1822篇论文的标题和摘要进行实验。[结果/结论]实验表明,识别准确率最高达到95.38%,但召回率较低;训练语料规模对性能影响较大,不同程度的语义泛化方法对准确率和召回率有复杂影响。如何选择语义特征、语义标注和语义消歧是需要解决的新问题。     

Leveraging comparable corpora for cross-lingual information retrieval in resource-lean language pairs

Cross-language information retrieval (CLIR) has so far been studied with the assumption that some rich linguistic resources such as bilingual dictionaries or parallel corpora are available. But creation of such high quality resources is labor-intensive and they are not always at hand. In this paper we investigate the feasibility of using only comparable corpora for CLIR, without relying on other linguistic resources. Comparable corpora are text documents in different languages that cover similar topics and are often naturally attainable (e.g., news articles published in different languages at the same time period). We adapt an existing cross-lingual word association mining method and incorporate it into a language modeling approach to cross-language retrieval. We investigate different strategies for estimating the target query language models. Our evaluation results on the TREC Arabic–English cross-lingual data show that the proposed method is effective for the CLIR task, demonstrating that it is feasible to perform cross-lingual information retrieval with just comparable corpora.     

乌鲁木齐市中小学体育场地向社会开放的调查与研究

通过乌鲁木齐市第五次体育场地普查,根据对全市学校体育场地、中小学体育场地以及体育场地向社会开放情况的统计,分析中小学校体育场地向社会开放的情况,发现占全市体育场地近三分之一的中小学校体育场地开放率很低。因此,对如何使中小学校体育场地向社会开放,为全民健身发挥重要作用,提出相应的对策和建议。