基于移动无线传感器网络的k-阶覆盖算法     

徐晋辉 《长治学院学报》2012,29(2):64-67

在移动无线传感器网络中,传感器节点可能由于自身移动、能量损失、物理损坏、错误和故障等因素的影响,从而出现覆盖漏洞的情况,继而导致网络覆盖效率低下。本文就此设计了一个新的移动无线传感器网络覆盖算法,基于分簇的方式,而且能够实时监测网络中出现的覆盖漏洞,并迅速进行修复。仿真结果表明,对于移动无线传感器网络,该算法不仅能够实现所期望的覆盖均匀度,还能够增加覆盖面积,提高网络覆盖率,而且性能要优于VFA。  相似文献   

一种无线传感器网络覆盖空洞的修复方法     

张蕾  钱峰 《黄山高等专科学校学报》2012,(5):11-13

针对无线传感器网络中覆盖空洞的现象,提出一种基于虚拟力的解决办法。为减少节点由移动所带来的能量消耗,该方法最多选择3个节点,通过节点移动并扩大其感知半径来修复覆盖空洞。实验结果表明该方法能保证较好的网络覆盖率,延长网络的生存时间。  相似文献   

Reinvention of the Public Library for the 21st Century,edited by William L. Whitesides,Sr.     

《Public Library Quarterly》2013,32(2):73-74

Abstract

A first-person account of the drama inside the CNN newsroom on the day the Hurricane Katrina rocked the US Gulf Coast. Elliot Masie's document shows how the gathering and reporting of the news has become more eclectic, technical and under the influence of citizen-journalists who shape the news by what they send electronically to news outlets and to each other. In the librarian's job of helping researchers access information about the news has become more complex because the traditional linkage of reporting, editing and publishing has broken down.  相似文献   

First and second-level agenda-setting in the 2014 Indian general election: a time-series analysis of party-media relation     

Hans-Christian Baumann  Maxwell McCombs 《亚洲交流杂志》2018,28(2):205-226

The role of the press as a political watchdog is crucial to the functioning of democracy. Especially in the run-up to elections, voters depend on the media's presentation of parties and candidates to make informed, responsible choices at the ballot box. But who, then, influences the news media? Empirical evidence in the United States and Europe suggests that political party campaigns and election coverage in the news media are interconnected and influence each other. This study tests whether such agenda-setting effects between party campaigns and the media also take place in the general elections in the world's largest democracy, India. India's western-type political system has a distinct media system characterized by high competition, diversification, non-consolidation and formal and informal ties between the media, commercial interests and political actors. Content analysis and Granger's causality test of newspaper coverage (N?=?716) and party campaign messages (N?=?458) found that agenda-setting effects do occur in India, but are largely bi-directional. We also found an overwhelming focus of both newspapers’ election coverage and of all major party campaigns on one single candidate, the Bharatiya Janata Party (BJP)'s Narendra Modi. This, we argue, is a result of the broader trends that have shaped Indian politics in recent years. The significant correlations and non-significant causal effects between party campaign and media coverage also indicate a trade-off situation between political power negotiation and political balance in the press.  相似文献   

以整体性环境叙事构建中国绿色国际传播体系——以《中国日报》“北向追象”报道为例     

吴沁宇  韦清琦 《传媒观察》2022,(1)

《中国日报》于2021年夏开始的对云南亚洲象北行的专题英文报道,利用多平台综合信息展示了中国环保实践,在全球广受好评。本次报道与习近平总书记构建中国话语和中国叙事体系的理念十分相符,其中生态理念的本土特质得到凸显,官民一体的形象得到了积极塑造,而中国科技能力的展现也融入了一个好故事的解说之中。中国当代的环境叙事必须反映人与自然的生命共同体与人类命运共同体的完整结合;"北向追象"所构造的具有中国特色的环境叙事之所以取得了很好的外宣效果,跟其紧扣这一完整性的表达密不可分,对于今后的国际传播工作也提供了颇多启示。  相似文献   

Trends in Cultural Journalism     

Annemarie Kersten  Susanne Janssen 《Journalism Practice》2017,11(7):840-856

Various studies report that cultural journalism increasingly focuses on service and entertainment instead of serious arts coverage. The press prioritizes popular culture over traditional high arts to a growing extent. However, this shift in journalistic attention does not necessarily signify a straightforward decline in aesthetic standards, as popular cultural forms like film have developed along the lines of high art principles in the past decades. This article charts trends in American, Dutch, French, and German film journalism between 1955 and 2005. It demonstrates that coverage is typified by a serious aesthetic approach from the 1970s onwards. The principles of art are seen to steer journalists’ attention to an important degree: the review remains the predominant journalistic genre, and newspapers devote more attention to films by prestigious directors than strictly commercial moviemakers. As such, film’s prominence in the press does not seem to indicate a decline in serious cultural journalism but rather a revaluation of a popular cultural form.  相似文献   

The dream of statehood and the reality of conflict: local and international coverage of the Palestinian United Nations bid for statehood     

Yuval Karniel  Amit Lavie-Dinur  Tal Samuel-Azran 《亚洲交流杂志》2017,27(1):33-48

This paper examines whether or not media coverage is biased by the political orientation of the journalists’ country, specifically illustrated by the 2011 bid for statehood by the Palestinian Authority in the United Nations. This bid represents a symbolic step toward international recognition of a Palestinian state, an important event in the Israeli-Palestinian conflict. A quantitative analysis was conducted on 1577 news reports from American, European, and Middle Eastern outlets to determine the differences in media coverage of the Palestinian bid for statehood among the channels. The findings suggest that Israeli channels broadcasted a relatively low number of items in which the Palestinian declaration itself was the main theme. The BBC broadcasted a relatively high rate of such items, and offered balanced coverage of both Israeli and Palestinian positions, while coverage by American FOX News channel reflected a pro-Israel bias. The findings also suggest that media outlets may be biased toward specific leaders. This work builds on a growing body of research on media framing of political conflicts and the effect of the political context of a country on its media outlets’ coverage.  相似文献   

经济报道如何"突出重围"     

温仕红 《保山师专学报》2003,22(1):78-80

改进经济报道是加强新闻改革的关键之一。经济报道要在从宣传到服务的报道功能的转变中，在进一步拓展报道视野和领地的变革中，在报道形式的创新中，实施全面的“突围”，以周到的服务、丰富的信息和读者喜闻乐见的文风吸引受众。  相似文献   

突发性灾难事件报道的一次突破——解读汶川大地震报道     

蒋含平  夏明桢 《洛阳师范学院学报》2008,27(4):7-10

5.12汶川大地震发生在《中华人民共和国政府信息公开条例》实施12天后,国内媒体突破了以往突发性灾难事件的报道模式,在第一时间报道灾难消息,报道新闻更为公开透明;媒体全面参与、深度介入事件的过程,充分发挥了传递信息、整合社会情绪的作用;媒体报道也较好的体现了专业精神与人文情怀。在此次地震报道中也有一些值得反思的地方,包括如何处理好报道的及时和全面的关系、职业要求与人文关怀的关系。  相似文献   

解析《新华日报》湖北抗疫一线报道中的“四力”支撑     

姜圣瑜 《传媒观察》2020,(5):88-93

新华日报记者发自武汉、黄石抗疫一线的报道,因角度巧、故事新、写法活,有深度、有高度、有温度而受到了读者的喜爱,其中多篇被全网推送。本文从学理角度解析这些报道成功背后的"四力"支撑作用。从稿件的"脚步声"中,听到了记者的心在哪里安放,脚步就会在哪里踏响;从记者的"眼力"中,看到了挺立风雨的医者脊梁、共克时艰的磅礴力量、休戚与共的"江苏担当";记者站在高处看全局,用思想铸造新闻的最高境界……"脚力"的勤快深入,"眼力"的广大精微,"脑力"的深思熟虑和"笔力"的完美呈现,是这组报道真正的"王道"。  相似文献