要闻

“中油应急101”船交接签字仪式举行 中国石油网消息,近日,“中油应急101”船交接签字仪式在上海举行。这标志着中国石油海上应急救援响应中心正式拥有第一艘自建多功能工作船舶。     

本地要闻

康拓陶瓷举行经销商年会2007年12月29日,康拓陶瓷在位于南庄的康拓陶瓷新营销中心举行了经销商年会,与经销商一同分享07年收获的喜     

Objectivity and Information Bias in Campaign News

This article examines whether objective campaign news stories—defined here as those with equitable tone toward 2 competing candidates—are less informative than slanted stories favoring one candidate over the other. Using a large news content dataset composed of campaign news stories from statewide elections in 2004, 2006, and 2008, we measure news story quality 6 different ways. It is modeled as a function of differences in story tone toward opposing candidates and a host of other news outlet and electoral characteristics known to influence the nature and type of information in campaign news. We find that slant is positively related to the likelihood that news articles focus on substance, issues, and include sourced content.     

加速溶剂萃取-超高效液相色谱法测定沉积物中硝基呋喃

建立了加速溶剂萃取-超高效液相色谱测定沉积物中硝基呋喃类药物(呋喃唑酮、呋喃它酮、呋喃西林、呋喃妥因)的分析方法。样品经乙腈萃取后,超高效液相色谱分离,流动相为乙腈和0.1%甲酸的2 mmol/L乙酸铵溶液。在优化条件下,4种硝基呋喃类药物在5~200μg/L浓度范围内线性关系良好,相关系数R2>0.998,方法检出限均为5.0μg/kg。在10~50μg/L添加水平之间的回收率为85.1%~93.6%,相对标准偏差为1.93%~5.04%。该方法灵敏、准确、高效、分析速度快,适用于沉积物中4种硝基呋喃类药物的测定。     

What Creates Interactivity in Online News Discussions? An Exploratory Analysis of Discussion Factors in User Comments on News Items

While the social, political, and journalistic relevance of user comments on online news items has been discussed intensively, no study has tried to examine why some online news discussions are more interactive than others. Based on the rationale of news value theory, this study argues that so‐called discussion factors in user comments indicate general relevance to later users to respond to them. Qualitative interviews with users who comment on news stories online and a quantitative content analysis of 1,580 user comments showed that the discussion factors uncertainty, controversy, comprehensibility, negativity, and personalization can explain interactivity in news discussions. Further, different technological implementations of the comment function seem to have a limited influence on the effects of these discussion factors.     

NewsVideoCAR:一个基于内容的视频新闻节目浏览检索系统

介绍了ＮｅｗｓＶｉｄｅｏＣＡＲ系统的构成，核心技术的基本思想和浏览界面的设计要点．     

Knowle: A semantic link network based system for organizing large scale online news events

An explosive growth in the volume, velocity, and variety of the data available on the Internet has been witnessed recently. The data originated from multiple types of sources including mobile devices, sensors, individual archives, social networks, Internet of Things, enterprises, cameras, software logs, health data has led to one of the most challenging research issues of the big data era. In this paper, Knowle—an online news management system upon semantic link network model is introduced. Knowle is a news event centrality data management system. The core elements of Knowle are news events on the Web, which are linked by their semantic relations. Knowle is a hierarchical data system, which has three different layers including the bottom layer (concepts), the middle layer (resources), and the top layer (events). The basic blocks of the Knowle system—news collection, resources representation, semantic relations mining, semantic linking news events are given. Knowle does not require data providers to follow semantic standards such as RDF or OWL, which is a semantics-rich self-organized network. It reflects various semantic relations of concepts, news, and events. Moreover, in the case study, Knowle is used for organizing and mining health news, which shows the potential on forming the basis of designing and developing big data analytics based innovation framework in the health domain.     

基于简单工厂模式新闻聚合器的设计与实现

应用简单工厂模式提供一个组织化的框架,设计一款可以在Internet上获取RSS和Atom两种规范格式的XML文档,能够对XML文档进行解析并显示出来的新闻聚合器。应用软件设计模式使工作更有效率,使代码更加易于维护。     

Extending media system dependency theory to informational media use and environmentalism: A cross-national study

The present study applies media system dependency theory to explore how informational media use was associated with two dimensions of environmentalism: the willingness to pay for environmental protection, and environmental citizenship (participating in pro-environmental activities). It also examines how this association varies across structural-level environmental, technological, and political factors. Multilevel models derived from two waves of the World Values Survey implemented in 68 countries revealed that informational media use was positively associated with environmentalism. The effects of informational media usage at individual level on environmentalism were further moderated by country-level factors. Information media use casted greater impacts on environmentalism when the information and communication infrastructure was better developed, or where the real-world environmental situation was worse.