Optimal Results: What Libraries Need to Know About Google and Search Engine Optimization

Search engine optimization, or the practice of designing a web site so that it rises to the top of the results page when users search for particular keywords or phrases, has become so prevalent on the modern web that it has a significant influence on Google search results. This article examines the techniques used by search engine optimization practitioners, the difference between “white hat” and “black hat” optimization tactics, and why it is important for library staff to understand these techniques and their impact on search engine results pages. It also looks at ways that library staff can help their users develop awareness of the factors that influence search results and how to better assess the quality and relevance of results listings.     

基于Flash3D技术的小学立体几何教学平台的设计与实现

空间观念的培养是小学数学课程的重要目标之一。当前的教学过程中缺少可以操作的可视化学习工具,难以满足立体几何的教学需求,根据这一问题设计并实现了小学立体几何教学平台。文章阐述了该平台的设计理念、主要功能和系统架构,引进了新兴的Flash3D技术,并对著名的Flash3D引擎——Alternativa3D的开发流程进行了详细介绍,基于该引擎对平台进行实现。平台具有逼真的三维场景、丰富的感性资源、友好的交互方式等特点,是新技术在教学中应用的一次有益尝试。     

分布式学术搜索引擎研制及其大数据应用

受“搜索引擎”流行的影响,目前大家已经习惯把图书情报领域使用的“情报检索系统”称之为“学术搜索引擎”。无论从技术层面上还是应用层面上,尽管二者有很大的共同点,但也有很大差异。传统的集中式的搜索引擎已经无法满足飞速发展的信息爆炸和普及化的海量需求用户,能够提供“云服务”的分布式搜索引擎已经成为必然。文章主要内容包括学术搜索引擎涉及的关键技术、分布式搜索引擎的架构,以及分布式搜索引擎在大数据领域的主要应用价值三个方面,最后给出了分布式搜索引擎RMSCIoud的典型应用介绍。     

An Exploration of Indexed and Non-Indexed Open Access Journals: Identifying Metadata Coding Variations

The intent of this investigation was to learn what factors may have contributed to low usage of a small set of reputable open access scholarly journals, as evidenced in graduate student reference lists. Inquiry into differences among open access sources referenced between 2005 and 2014 revealed that non-indexed journals were being used notably fewer times than their commercially indexed counterparts. A comparison of HTML source code between indexed and non-indexed journals illustrated that certain metadata and other coding features may have affected the visibility of non-indexed journal content. The study suggests to librarians the presence of less visible empirical literature on the web and to smaller, independent academic publishers, the need to apply better quality metadata and optimization strategies to their open access journal content.     

Effective Internet Research

For many reasons, students with disabilities are not as thoroughly represented in science careers as are their nondisabled peers. In this case study, the authors explore the effects an informal education program focused on environmental science and delivered to college-bound students with disabilities had on comfort level with science and interest in science careers. Results indicate that the informal nature of the program was well-received and increased individuals' confidence in their science ability. The authors present suggestions for translating this experience into a traditional classroom setting.     

双燃料发动机燃烧模型研究综述

发动机燃烧模型的发展经历了零维模型,准维模型,多雏模型三个阶段。双燃料发动机是气体燃料使用的主要方式,针对国内外双燃料发动机燃烧模型的研究进展和现状,介绍了气体-柴油双燃料发动机的三维燃烧模型应包含的子模型和计算方法。     

国外基于网格的搜索引擎系统结构体系的比较研究

随着网络信息的增长,人们对传统搜索引擎提出了更高的要求,网格技术的出现为改善传统搜索引擎的性能提供了技术保证。本文详细地介绍了国外基于网格技术的搜索引擎系统的结构体系,并对它们作了比较研究。最后,借鉴国外基于网格技术的搜索引擎系统的研究成果,对我国今后搜索引擎系统的研究和发展提供了建议和展望。     

分类搜索引擎的体系构建及其使用方法探析

概述了分类搜索引擎的产生和发展,分析了其分类体系的构建及其特点,例释了分类搜索的方法与途径.试图为广大用户更好的利用网络检索信息提供一些有益的参考.     

基于网页内容评价和Web图的启发式垂直搜索策略的设计

针对传统的基于Web图的垂直搜索策略Authorities and Hubs,提出了一种融合了网页内容评价和Web图的启发式垂直搜索策略,此外,引入向量空间模型进行针对网页内容的主题相关度判断,进一步提高主题网页下载的准确率.实验表明,文中算法有效地提高了主题网页的聚合程度,且随着网页下载数量的增加,垂直搜索引擎的准确率逐渐递增,并在下载网页达到一定数量后,准确率趋于稳定,算法具有较好的鲁棒性,可以应用到相关垂直搜索引擎系统中.     

内燃机活塞裙面加工精度的BP神经网络控制技术研究

在加工活塞裙面时,传统的控制方法往往是通过直接加工或误差补偿来实现,精度效果往往不能尽如人意,为此,采用BP神经网络控制技术,可以取得令人满意的效果,实验结果表明,这种方法是可行的。