Swine flu and hype: a systematic review of media dramatization of the H1N1 influenza pandemic

Highly disconcerting at the time, in retrospective, the 2009 H1N1 influenza pandemic looks like much ado about nothing. As a consequence, many accused the media of having created an artificial hype or hysteria around the new virus, thus contributing to unwarranted public fear. The current paper set out to examine the validity of such accusations. We integrated empirical findings on whether the media dramatized H1N1 on a global scale through systematically reviewing prior content-analytic studies. We developed a coding scheme specifying three indicators of dramatized media coverage that – together – inform about how mass media coverage about H1N1 may amplify risk perceptions in the public: (a) the volume of media coverage, (b) the media content presented, particularly an overemphasis of threat while neglecting measures of self-protection and (c) the tone of coverage. Results show that media attention was immense, that news content stressed threat over precautionary measures, while the pattern of coverage tonality remained nebulous due to conflicting findings. The present review also revealed a critical gap in existing knowledge about the tone of media coverage on H1N1, and discusses implications for future research on dramatization of public health risks by the media.     

大规模定制的组织特征研究

目前国内外学者和专家主要从技术角度研究如何实现大规模定制,而本文从组织设计理论的角度分析了大规模定制模式对组织的要求。成功实施大规模定制的动态稳定性组织要求以增加顾客价值为导向、以业务流程为中心、内部组织具有高度柔性、外部组织能战略协作。     

基于Fluent的波节管内流体流动与传热特性研究

为了深入研究影响波节管传热效果的主要因素,应用CFD软件Fluent对波节管内流体的流动和传热特性进行数值模拟,分别研究了不同入口流速v(0.3,0.5,0.7和0.9 m/s)、波峰直径D_1(28,30,32,34和36 mm)、弧形段长S_1(34,23,17,13和10 mm)下波节管内流体的流动与传热特性。结果表明,不同型号波节管的努塞尔数(Nu)、流体压力损失以及综合性能随着入口流速的增加而增加;随着波峰直径D_1(弧形段长S_1)的增大,波节管的Nu先增大后减小,最后趋于一个相对稳定的值。当波节管的波峰直径D_1=34 mm时,波节管的传热性能最好,流体压力损失最大,综合性能最好;弧形段长S_1=23 mm时,波节管的换热性能最佳,流体压力损失最大,综合性能最好。通过参数正交分析可知,影响波节管传热效果的因素由强到弱依次为入口流速v、波峰直径D_1、弧形段长S_1。研究成果可为工程实际中提高波节管传热性能提供理论指导。     

超高效液相色谱-串联质谱法测定腌鱼中氟虫腈及其代谢物的残留

本文采用超高效液相色谱串联质谱法测定了腌鱼中氟虫腈及其代谢物氟虫腈砜、氟虫腈亚砜、氟甲腈.腌鱼样品经乙腈提取、盐析和吸附剂净化,以0.1％甲酸的甲醇溶液和0.1％甲酸的5 mmoL·L-1乙酸铵溶液为淋洗液在BEH C18色谱柱梯度洗脱,电喷雾负离子多反应监测(Multiple Reaction Monitoring,...     

中国海洋渔业经济增长质量测度及空间分异

党的十九大以来,我国经济已由高速增长阶段转向高质量发展阶段,按照稳中求进工作总基调和农业农村优先发展总方针,推进海洋渔业高质量发展面临新机遇。本文以海洋渔业经济增长质量内涵为基础,采用产业结构熵指数等,构建海洋渔业经济增长质量评价指标体系;建立包括增长的基本面和社会成果两个维度的海洋渔业经济增长质量评价模型,对海洋渔业经济增长质量进行测度,同时探讨其时空分异特征。研究结果表明:（1）中国海洋渔业经济增长质量在2003—2015年呈现四个完整的波动周期:2003—2005年的小幅波动,2006—2008年的先上升后下降,2009—2011年的缓慢波动上升,2012—2015年的小幅下降,2016年之后步入企稳增长新阶段;（2）中国海洋渔业经济增长质量在地区间分布不均衡,且差距逐渐显现;（3）预判中国海洋渔业经济增长质量在2016年之后,开始逐步进军高质量发展新阶段,地区间质量发展的非均衡态势短期内难以弥合。研究为有效推进海洋渔业供给侧结构性改革,促进海洋渔业高质量发展提供参考。     

基于循环修正的城市房地产泡沫程度评价研究

房价高涨引发了学者们对我国城市房地产泡沫的争议。本文将理论研究与实证分析相结合,对我国房地产市场的泡沫程度进行研究,利用客观评价方法——主成分分析法,和主观评价方法——模糊层次分析法,针对我国房地产市场泡沫程度分别进行指标选择和评价,最后利用循环修正的思想对中国城市房地产泡沫评价体系进行修正、校对。通过对35个城市的房地产市场泡沫程度的评价,最后得出结论:35个城市房地产市场存在不同程度的泡沫,沿海城市的泡沫程度高于内陆城市。     

折线形平房仓土建工程造价指数分析——以某地平房仓土建工程为例

本文通过具体工程实例,详细介绍了折线形屋架平房仓土建单位工程的造价指数编制及投资估算方法,为类似平房仓工程的投资估算编制提供了依据。     

桥梁工程中大体积混凝土的裂缝成因与预防

本文通过对本市大型钢筋混凝土结构桥梁梅东大桥的现场施工管理,从设计,施工的角度,分析了造成桥梁结构中大体积混凝土裂缝的原因,并提出如何预防,检查和处理大体积混凝土裂缝的主要的技术措施。     

Learning and stability of the Bayesian–Walrasian equilibrium

Under the Bayesian–Walrasian Equilibrium (BWE) (see Balder and Yannelis, 2009), agents form price estimates based on their own private information, and in terms of those prices they can formulate estimated budget sets. Then, based on his/her own private information, each agent maximizes interim expected utility subject to his/her own estimated budget set. From the imprecision due to the price estimation it follows that the resulting equilibrium allocation may not clear the markets for every state of nature, i.e., exact feasibility of allocations may not occur. This paper shows that if the economy is repeated from period to period and agents refine their private information by observing the past BWE, then in the limit all agents will obtain the same information and market clearing will be reached. The converse is also true. The analysis provides a new way of looking at the asymmetric equilibrium which has a statistical foundation.