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Search Results: 1 - 10 of 31866 matches for " 邓力 "
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新媒体环境下的集体行动动员机制:组织与个体双层面的分析
Changing Mobilization Mechanism of Collective Action in the New Media Environment: An Analysis on Organizational and Individual Levels


- , 2016,
Abstract: 摘要 在现代政治当中,新媒体在与集体行动相关的政治传播中发挥着愈发重要的作用。本文从集体行动中的新媒体传播现象出发,分别从组织动员和个体动机及认同两个层面探讨新媒体环境下出现的网络集体行动及其传播的相关特性。首先,新媒体起到了迅速散播动员信息的作用,并塑造了以虚拟抗议为例的网络集体行动。其次,带有个人化特性的新媒体对于集体行动的动员结构、组织方式、抗争剧目与框架过程四个面向皆有所影响。最后,新媒体改变了人们参与集体行动时的动机与认同,原有的公私边界发生变化,甚至可能改变集体行动这一概念本身的定义。
This paper investigates the role of new media in collective action which has been discussed in recent political communication research in depth. First, while new media facilitates the dissemination of mobilizing information of offline collective action, it also helps in forming online collective actions such as virtual protests. Second, this paper theorizes how the new media has changed the key aspects of collective action dynamics identified by traditional collective action theories. Third, this paper explores how the individualistic characters of ICT-mobilized collective actions have changed the individual-collective dichotomy from the social-psychology analysis approach.
一例儿童特发性肺含铁血黄素沉着症诊疗观察
Clinical Observation of Children’s Idiopathic Pulmonary Hemosiderosis: A Case Report
 [PDF]

陈芳, 黎晓丹,
Asian Case Reports in Pediatrics (ACRP) , 2016, DOI: 10.12677/ACRP.2016.43004
Abstract:
目的:探讨原发性肺含铁血黄素沉着症原因和治疗方法。方法:对我科发现一例特发性肺含铁血黄素沉着症病例进行临床资料的回顾分析。结果:患儿因反复咳血丝痰一年余来我院住院,CT显示肺部团片状磨玻璃影,肺泡灌洗液可见含铁血黄素巨噬细胞。长期口服激素治疗后无咳血丝痰,CT显示病变吸收。结论:儿童出现反复咯血,不管是否合并贫血,我们应该积极考虑原发性肺含铁血黄素沉着症的可能,进行早期鉴别诊断和治疗。
Object: The objective was to investigate the causes and treatment of idiopathic pulmonary hemosiderosis. Method: The clinical data of one child with the disease of idiopathic pulmonary hemosiderosis in our department were retrospectively analyzed. Result: The child was transferred to our department because of coughing the sputum with blood streaks repeatedly, and the CT showed the mass-like and ground-glass-like shadow of lung. We can find siderophages in the bronchoalveolar lavage fluid. After the treatment of oral corticosteroid in long term, the child hasn’t coughed the sputum with blood streaks again and the CT showed that the lesion has been absorbed. Conclusion: Whether the child is combining anemia or not, if he has hemoptysis repeatly, we should consider that he is possible to have the disease of idiopathic pulmonary hemosiderosis and have differential diagnosis and treat him early.
一种新型可连续调节的消弧线圈
刘和平,
重庆大学学报 , 2003, DOI: 10.11835/j.issn.1000-582X.2003.01.032
Abstract: 采用可连续调节的消弧线圈不仅解决了高压电感调节系统的价格昂贵和调节系统十分复杂的问题,还可以使经消弧线圈接地系统的优越性充分发挥。文中着重介绍了如何采用低耐压的晶闸管连续调节6-66kV的消弧线圈的一种新方法。对新型消弧线圈的电感调节量的计算进行了理论推导,并对其产生的稳态电流谐波分量进行了分析,用Saber软件对所设计的消弧线圈的理论依据进行了仿真实验验证和实物实验验证。
关于企业家与收藏的经济学随笔

东南文化 , 2002,
Abstract: ????
采用遗传算法优化神经网络的铸铁表面粗糙度声发射预测
Acoustic Emission Monitor Grinding Surface Roughness of Cast Iron via BP Neural Networks and Genetic Algorithm

,
- , 2018,
Abstract: 表面粗糙度是汽车发动机曲轴精密磨削加工中的一个非常重要的指标,在线监测表面粗糙度是曲轴智能磨削成功的标志。应用美国声学物理公司PAC的PCI-2声发射实验仪器测量磨削声发射信号,采用遗传算法优化BP神经网络,以磨削声发射信号均方根和快速傅里叶变换峰值为特征值,对平面磨削曲轴球墨铸铁材料QT700-2表面粗糙度成功进行了预测。与表面粗糙度的实测结果表明相对误差可控制在6.22%以下。
Surface roughness is a very important index in precision grinding of automotive engine crankshaft. On-line monitoring of surface roughness is a sign of intelligent grinding of the crankshaft. The PCI-2 acoustic emission experimental instrument made by PHYSICAL ACOUSTICS CORPORATION(PAC) was used in grinding test. By adopting a genetic algorithm for optimization of BP neural network and using grinding the acoustic emission signal root mean square(RMS) and fast Fourier transform peak as the characteristic values, the surface grinding crankshaft spheroidal graphite cast iron QT700-2 material surface roughness were predicted successfully. The relative error between the tested results and predicted is below 6.22%
中国财政支出对贸易平衡的动态冲击效应分析
,林峰
财贸经济 , 2014,
Abstract: 开放经济条件下一国财政政策运用如何影响该国贸易平衡,这是一个实证问题。本文采用PVAR模型检验了中国财政支出对贸易平衡的动态冲击效应。研究结果表明:(1)从总体上看,在中国特定机制条件下,财政支出对贸易平衡不会产生太大影响;(2)从分区域的角度看,财政支出对贸易平衡的冲击效应存在着显著的区域异质性,各地区财政支出对贸易平衡的冲击强度、收敛路径、累积效应和关联机制等存在着明显差异;(3)经济发展水平对一国财政政策与贸易政策联动性机制的形成具有重要影响。笔者据此提出中国财政政策与贸易政策协调的政策建议。
基于复数电压分布的波导缝隙天线的改进设计
,云凯
强激光与粒子束 , 2011,
Abstract: ?针对波导缝隙阵列,提出了一种基于复数电压分布的改进的波导缝隙阵列天线的设计方法。针对elliott对于波导缝隙阵列的设计只适用于实数的电压分布,从而不能设计出有任意形状的方向图的天线的问题,对此方法进行了改进,将其扩展到了任意的复数电压分布,并且考虑了缝隙之间互耦的影响。最后,利用改进的方法设计了一个有16个缝隙的端馈线阵方向图,与商业软件ansofthfss的仿真结果比较,证明了方法的有效性。
组合几何蒙特卡罗粒子输运支撑软件框架jcogin介绍
张宝印,李刚,
强激光与粒子束 , 2013,
Abstract: ?介绍了jcogin支撑软件框架层次式、模块化的体系结构及其核心数据结构。这些使得jcogin软件框架能够支撑大规模复杂几何的蒙特卡罗(mc)粒子输运并行计算。同时介绍了在jcogin支撑软件框架下研发的jmct程序,并进行了性能测试,在2万处理器核上模拟20亿粒子,并行效率达到70%。
光化学和啤酒
王天柱,
食品科学 , 1983,
Abstract: ?当啤酒暴露在光,特别是太阳光之下时,其味道会发生变化,而且变得非常令人讨厌。啤酒的这种光反应所产生的味,就是人们说的“太阳味”,“太阳照射味”,“光味”或更一般地叫做“光照味”(lightstuckflavor-lsf)。这个现象是一个使人相当感兴趣的,值得重视和探讨的课题,具有极为重要的经济
多参数雷达在估计雹暴降雨率中的应用
,华秋
气象 , 1997, DOI: 10.7519/j.issn.1000-0526.1997.8.003
Abstract: 根据多参数雷达(双偏振、双波长、多普勒)在美国科罗拉多高原初夏对含冰雹的暴雨的观测数据,我们分别应用s波段的反射率zh比相差kdp、以及x波段的比衰减ax对降雨率r进行了估计,并将这些基于雷达参数的估计与地面雨量计的记录进行了比较。结果表明,分别基于kdp和ax的降雨率估计与雨量计的记载相当吻合,雨量累积差小于10%,而基于zh的降雨率估计只有当zh截断于55dbz时才能得到相似结果。研究结果肯定了kdp在含有雨-冰雹混合结构的对流性暴雨中精确估计降雨率方面的作用。
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