基于主题关键词的网络舆情分析研究

采用手工设置和特征提取相结合的方法来确立舆情主题,依据设定的主题关键词采集舆情页面。根据抓取的舆情页面特点,解析并提取页面的标题、页面链接及链接上下文等元数据,根据页面元数据与舆情主题的相关度来筛选出舆情主题页面。通过实验发现,在不同的舆情发展阶段,舆情主题关键词的变化能反映出舆情的关注点变化,最终实现快速跟踪舆情发展的目的。     

A BAYESIAN INTERPRETATION OF MULTIPLE POINT ESTIMATES

Consider a large number of econometric investigations using different estimation techniques and/or different subsets of all available data to estimate a fixed set of parameters. The resulting empirical distribution of point estimates can be shown - under suitable conditions - to coincide with a Bayesian posterior measure on the parameter space induced by a minimum information procedure. This Bayesian interpretation makes it easier to combine the results of various empirical exercises for statistical decision making. The collection of estimators may be generated by one investigator to ensure the satisfaction of our conditions, or they may be collected from published works, where behavioral assumptions need to be made regarding the dependence structure of econometric studies.     

网络数据库管理技术在CIMS工程中的应用

CIMS技术在制造业的应用是制造业和信息技术融合,必然趋势,作为CIMS应用的支撑平台也随着Internet的迅猛发展不断完善提高,因而Web技术和企业Internet数据的集成一直是人们关注的热点。本文在研究参考了多种Web和CIMS技术之后,通过一定程度的验证,提出了适合中小企业应用的信息方案。     

关于Web系统安全性技术问题的探讨

研究基于Web信息服务系统的用户授权问题、IP地址追踪问题、页面间的安全问题等安全性问题,并探讨了一些解决方法,具有一定的实用性与有效性.     

AUTOCAD在INTERNET上的应用

探讨如何在ＩＮＴＥＲＮＥＴ上进行全球性ＡＵＴＯＣＡＤ设计。讨论网络格式图形文件的生成、浏览和发布的具体步骤。     

Shortcomings in the Measurement of Innovation: Implications for Accounting Standard Setting

Innovation is nowadays a fundamental determinant of value creation in business companies and economic growth. Therefore, the measurement of innovation has become a significant concern both for business companies and governments. Traditionally, attempts to measure innovation have adopted a macroeconomic approach, as they have been largely based on broad surveys. However, no attempt has been made to date in order to complement the information provided by such surveys with aggregated data obtained from the financial reports of individual companies. This paper analyses the conceptual and methodological problems underlying the measurement of business innovation by means of surveys and discusses the lack of ability of accounting standards to accurately reflect innovative activities in the financial statements of business firms.In the light of the evidence provided by the empirical studies published to date, we analyse the Spanish situation by reviewing innovation studies conducted by the National Institute of Statistics (INE), and assessing the relationship between the value relevance of accounting information and the firm's technological level. Our results suggest that both, micro- and macroeconomic approaches towards the measurement of innovation have significant shortcomings. Thus, a joint effort seems to be needed in order to overcome the methodological limitations affecting innovation studies based on surveys and those relying on financial accounting information. Despite their limitations, surveys provide a sound basis for the identification of trends, key factors and explanatory variables. On the other hand, financial statements could provide a sound basis for the measurement of innovation if they included more relevant information on the intangible determinants of the value of companies. This has obvious implications for the standard setting process.     

ERP环境下能力需求计划的分析与设计

在系统分析的基础上,通过应用.NET平台及数据库技术,设计出了ERP系统下能力需求计划(Capacity Requirements Planning,CRP)子系统的系统模块结构图、各功能模块的逻辑流程图,在设计时考虑了系统的通用性,符合中小企业的特点,实现了系统的基础数据录入、能力需求计划过程及信息查询功能.     

受免疫原理启发的Web攻击检测方法

随着Internet应用的不断深入,Web服务器成为了黑客的主要攻击目标。为克服传统误用入侵检测系统无法识别未知Web攻击和异常入侵检测系统误报率高等缺陷,受生物免疫系统启发,该文提出了一种基于免疫原理的Web攻击检测方法。给出了自体、非自体、抗原、抗体基因库、免疫细胞等的数学定义,描述了免疫学习算法。对比实验结果表明该方法较传统的基于神经网络和ID3算法的Web攻击检测技术能有效检测未知Web攻击,具有检测率和分类率高、误报率低和实时高效等特点,是检测Web攻击的一种有效新途径。     

基于文献计量的价值共创研究现状分析

将CNKI和Web of Science作为中外文献数据源,通过文献计量法,从时间、地点、学科、研究层次、研究方向、关键词、引文等维度对国内外价值共创研究现状进行分析。在此基础上,总结出目前研究的三个显著特征：研究呈现出一定的阶段性特征;基础研究所占比例较大,实践、应用研究较少;价值共创的概念定义不清晰,有影响力的学术成果数量有限。     

网络传播中社会情绪表达问题研究

当个体的人的喜怒哀乐诸种情绪汇集而成为众多人的一种共同性情绪特征时,这就演化成了社会情绪。在传统大众传媒领域,一种社会情绪的汇集与表达难度是相当大的,因为要受到这些媒体把关人的审视和调控,但当网络媒体出现、兴起后,社会情绪借助这一媒介平台其表达、传播、汇集就变得十分容易,由此带来的社会影响也很大,对社会的运行有时能起到积极的推波助澜的作用。当然,有的社会情绪的消极作用也同样会出现。这就产生了网络传播时代社会心理学中的一个新问题,即网络传播中的社会情绪表达。对这一问题的提出和研究,应该引起相当的重视,因为它关乎网络传播本身运行的量与质,也关乎社会的和谐和稳定。