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Lauri Haapanen 《Journalism Practice》2020,14(3):374-394
ABSTRACTThe Mediated Social Communication (MSC) approach considers mass media a venue for opposing and complementary societal groups to publicly negotiate socially relevant topics. This negotiation is conducted through representatives of these groups and mediated by journalists. Inspired by the MSC approach, this paper presents an empirically grounded model that structures the mediating process through the process of quoting. By identifying the key phases of newswriting as sub-processes of quoting, the paper argues that journalists (1) decide on a topical issue to be addressed (topicalisation), (2) identify groups of people who are linked to this issue (societal localisation), (3) pick some people as representatives of these societal groups (personalisation), and (4) verbalise these people's points of view, often by means of quoting, inter alia (verbalisation). The four-phase model is then operationalised into a data collection method that facilitates access to and fosters new insights into the subtle dynamics of newswriting. Hitherto, these dynamics have often remained obscure, because the craft ethos is adopted as tacit knowledge through implicit socialisation and is therefore difficult for journalists to verbalise. The paper concludes by calling for reconsideration of journalists’ role as gatekeepers who decide which issues and voices are heard in public discourse. 相似文献
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MSC1201型微处理器具有与8051型微处理器完全兼容的内核，执行速度更快，功耗更低．本文详细介绍基于此电路并配合ADI的AD590型温度传感器的温度控制系统的设计与实现． 相似文献
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林少玲 《福建师大福清分校学报》1999,(2):34-40
本中,由BIC－代数映射的特征获得了由映射式的代数构成的BIC－代数的结果和性质。等等。 相似文献
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Mei-xiang Xiang Ai-na He Jian-an Wang Chun Gui 《Journal of Zhejiang University. Science. B》2009,10(8):619-624
Objective The aim of this study was to test the protective effect of mesenchymal stem cells (MSCs) on cardiomyocytes in vitro and to
investigate the anti-apoptotic signaling pathway.
Methods MSCs from Sprague-Dawley (SD) rats were separated and cultured. MSC medium was collected from MSCs cultured in serum-free
Dulbecco’s modified eagle medium (DMEM) under hypoxia. Cultured cardiomyocytes from neonatal SD rats were exposed to hypoxia/reoxygenation
(H/R) and treated with MSC medium. The apoptotic cardiomyocytes were stained with Annexin-V-fluorescein isothiocyanate (FITC),
Hoechst 33342 and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL). The mitochondrial transmembrane
potential of cardiomyocytes was assessed using a fluorescence microscope. The expression of Bcl-2, Bax, cytochrome C, apoptosis-induced
factor (AIF), and caspase-3 was tested by Western blot analysis.
Results Our data demonstrated that MSC medium reduced H/R-induced cardiomyocyte apoptosis, increased the Bcl-2/Bax ratio, and reduced
the release of cytochrome C and AIF from mitochondria into the cytosol.
Conclusion MSCs protected the cardiomyocytes from H/R-induced apoptosis through a mitochondrial pathway in a paracrine manner.
Project supported by the National Natural Science Foundation of China (No. 30670868) and the Natural Science Foundation of
Zhejiang Province, China (No. R206007) 相似文献
5.
贺家杰 《郧阳师范高等专科学校学报》2003,23(3):27-28
阐述了一种利用气敏传感器对H2S气体浓度进行高精度、宽范围测量的单片机实现方法，是一种高性能、易实现、实用性较强的H2S气体浓度监测、报警装置。讨论了关键技术和实现过程。 相似文献
6.
很多工业控制领域和家用自动化都必须进行现场数据采集,然后根据现场采集的数据进行分析计算.判断现场状况,然后对现场进行处理.实现工业和家用设备的自动控制.本文提出了一种以MSC1210单片机为核心,采用温度/湿度传感器PL907021/10和三星公司的S3C44BOX芯片共同构成数据采集系统的一个方法. 相似文献
7.
李晓娜 《南阳师范学院学报》2012,11(8):119-121
现代汉语中的英语外来词近年来不断增多,发展迅速,引起了学术界的密切关注。现代汉语吸收英语外来词的方式有音译词、意译词和直引词等三大类;在形式和内容上出现了音译形式、直接引用形式增多及词素化等发展特点;英语外来词的使用折射出不同的社会文化心理,也对现代汉语产生了一定影响;现代汉语中英语外来词的规范宜从建议、疏导而非立法、封堵的角度来操作。 相似文献
8.
焊接是工程制造领域广泛使用的一种高效构件成型制造技术,但焊接过程中因焊接局部加热而形成的残余应力和变形是在工程制造中不希望出现的。焊接数值模拟能较为准确预测焊接构件中的焊接残余应力和变形的分布情况,可用以指导制造过程中焊接工艺参数的优化和焊接顺序的选择,为降低试验成本和缩短产品制造周期提供了一种可行的方法。对MSC.Marc软件焊接模拟热源模型、材料模型以及其在焊接残余应力和变形模拟中的应用情况作了介绍。 相似文献
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10.
文章首先介绍了数字称重传感器的典型结构,并给出了MSC1210实际用于称重传感器的硬件设计构成,最后通过实验测试数据的结果,说明了基于MSC1210的数字称重传感器具有良好的技术参数。 相似文献