基于DLNA协议的多屏互动系统

由于移动设备的普及和移动互联网应用的推广,移动应用趋于多样化和复杂化,多设备间的数据传输及共享成为移动应用技术研究的重点。首先分析DLNA(Digital Living NetworkAlliance)协议的工作原理,然后描述利用DLNA协议在Android操作系统中对多屏互动系统的设计及关键模块的实现。该平台具有无缝连接的、所见即所得的、操作简单等优点。     

我国新闻媒体在突发地震事件应对中的责任与义务

对地震突发事件实施有效的宣传报道是我国主流媒体的一项重要职能,也是新闻媒体的责任。在地震发生后迅速采取有效的新闻引导与管理,最大限度地减少负面影响,凝聚人心,稳定社会,是地震应急处置成功与否的关键。结合5.12汶川地震实例,讨论了应对突发地震灾害中,政府、新闻媒体二者的相互关系和作用,论证了新闻媒体在应对突发地震灾害的责任和义务。     

The imperishable controversy over aquaculture

Fish farming has been a recurring topic of debate, not the least in the news media. The media is an important source of information about the aquaculture industry and its products to the public. However, the media is also an important debate arena, enabling representatives of the public, stakeholders, authorities, and the industry to engage in discussions as well as to influence policy and regulations. This paper focuses on the continuous debates in news media, the topics and storylines discussed, the various actors participating, and their arguments. Through a study of the content, positions, and producers of debate contributions in nine Norwegian newspapers, this paper sheds light on the public debate on aquaculture and the present controversies. Drawing on discourse theory, it is argued that the concept of discursive conflicts offers important insights into the controversies surrounding aquaculture. Discourse coalitions unite seemingly dissimilar and independent actors, and shared story lines provide political momentum, reduce complexity and reify the debate. However, such coalitions also contribute to maintaining the debate in a deadlock.     

Conspicuous redemption? Reflections on the promises and perils of the ‘Celebritization’ of climate change

With rising public awareness of climate change, celebrities have become an increasingly important community of non nation-state ‘actors’ influencing discourse and action, thereby comprising an emergent climate science-policy-celebrity complex. Some feel that these amplified and prominent voices contribute to greater public understanding of climate change science, as well as potentially catalyze climate policy cooperation. However, critics posit that increased involvement from the entertainment industry has not served to influence substantive long-term advancements in these arenas; rather, it has instead reduced the politics of climate change to the domain of fashion and fad, devoid of political and public saliency. Through tracking media coverage in Australia, Canada, the United States, and United Kingdom, we map out the terrain of a ‘Politicized Celebrity System’ in attempts to cut through dualistic characterizations of celebrity involvement in politics. We develop a classification system of the various types of climate change celebrity activities, and situate movements in contemporary consumer- and spectacle-driven carbon-based society. Through these analyses, we place dynamic and contested interactions in a spatially and temporally-sensitive ‘Cultural Circuits of Climate Change Celebrities’ model. In so doing, first we explore how these newly ‘authorized’ speakers and ‘experts’ might open up spaces in the public sphere and the science/policy nexus through ‘celebritization’ effects. Second, we examine how the celebrity as the ‘heroic individual’ seeking ‘conspicuous redemption’ may focus climate change actions through individualist frames. Overall, this paper explores potential promises, pitfalls and contradictions of this increasingly entrenched set of ‘agents’ in the cultural politics of climate change. Thus, as a form of climate change action, we consider whether it is more effective to ‘plant’ celebrities instead of trees.     

自动气象站和人工气象站气温差异特征分析

2006年5月27日,全国第一个新一代气象数据卫星接收站在山西省气象信息中心投入业务试运行,该系统采用的是D V B传输协议。DVB-S(Digital Video Broadcastby Satellite)气象数据接收站在山西省的成功安装,标志着我国新一代气象数据卫星广播系统建设工作拉开了序幕。该系统的业务化运行将大大增加气象信息的数据量,提供高质量的流媒体广播,为提高天气预报准确率和气象服务时效奠定坚实的基础。目前新系统运行一切正常。     

Precise Measurement of Subsurface Seismic Velocity Variation by Coda Wave Interferometry

A filed experiment was conducted continuously for three days, and the velocity variation was measured using coda wave interferometry. The measurement error is estimated to be around 10^-4, which coincides well with the theoretical error. The velocity variation during this period is up to 10^-3. The relationship between velocity variation and changes in air temperature, barometric pressure and solid earth tide was analyzed with linear least square fitting. The velocity has no dependence on air temperature, but displayed change of the order of 10^-6 - 10^-7 when the barometer or earth tide changed one Pa.     

高密度电法探测地下空洞

简要介绍了高密度电法的基本原理及其特点,结合探查地下空洞实例,说明高密度电法寻找地下空洞的利弊。     

The racialized geographies of news consumption and production: contaminated memories and racialized silences

With its longstanding history and interest in issues of landscape and representation, geographers are ideally positioned to analyze the relationship between media, identity and place in media. What is missing, however, is a grounded understanding of the dynamics of the locally produced politics of representation and, in particular, how these representations are perceived by different members of the audience. This paper briefly explores the nexus of race, news production and news consumption through an analysis of interviews with racialized journalists (journalists who identified as members of minority racial groups) and a focus group conducted with self-identified Iranian Canadians. The paper looks specifically at two themes that emerged in the empirical material: the contamination of memory and the creation of colonized memory media-spaces for some participants in the focus group, and the nature of racialized silences in the newsroom. I suggest that geographies of news might well be understood as a complex, interactive process of the production of meaning between both producer and consumer, where news content, ethics, roles and values are negotiated through multiple social contexts.     

Visual methodologies through a feminist lens: South African soap operas and the post-apartheid nation

Using a discussion of South African soap operas, I will place the idea of visuality in a discourse analysis that incorporates a feminist epistemological lens, or an epistemology that integrates reflexivity and an acknowledgment of the dialogic nature of visual media. Through this discussion, I will examine the possibilities that dialogism provides for unpacking and exploring the politics of imperfect translation between the visual and the textual. These methodological interventions, I argue, will help enrich discussions of the visual’s role in the contested realm of geographic imaginations and move beyond the distanced position of the masculine gaze.

Mediating the spaces of diet and health: A critical analysis of reporting on nutrition and colorectal cancer in the UK

The media are one of the main arenas in which nutrition information is framed and developed. Research has shown a predominantly individualistic framing of diet-related health issues such as obesity, type-2 diabetes and coronary heart disease in international media coverage. These issues are framed as personal, ’lifestyle’ issues rather than requiring policy or structural change. In addition, research has shown a tendency in nutrition research and media coverage of it, to emphasize individual ingredients or components more than overall diet. The media have a tendency to report diet related research simplistically, often without contextualization. Taking a case study approach, this paper analyses UK news media coverage and framing of British Medical Journal (BMJ) published research into dietary fibre and bowel cancer risk. I investigate how the health issue fibre and bowel cancer is framed and dissect the process of mediation (from press release to mass media to local media), analysing the shifting ’geographies of responsibility’ that result. This paper argues that media coverage of research into diet and bowel cancer can be explained by the technologies, conventions and routines of media representation. Key gatekeepers were found to have an important role in framing the information that was reported. Taking a critical approach, this paper argues that like obesity, type 2 diabetes and coronary heart disease, coverage of nutritional means of preventing bowel cancer is set predominantly in the ’lifestyle’ frame, laying responsibility for increasing dietary fibre at the door of the individual rather than looking at broader social, economic, or political drivers of dietary change.