“Pick and choose” opinion climate: How browsing of political messages shapes public opinion perceptions and attitudes     

《Communication monographs》2012,79(4):457-478

ABSTRACT

High-choice media environments allow people to cocoon themselves with like-minded messages (confirmation bias), which could shape both individual attitudes and perceived prevalence of opinions. This study builds on motivated cognition and spiral of silence theory to disentangle how browsing political messages (both selective exposure as viewing full articles and incidental exposure as encountering leads only) shapes perceived public opinion and subsequently attitudes. Participants (N?=?115) browsed online articles on controversial topics; related attitudes and public opinion perceptions were captured before and after. Multi-level modeling demonstrated a confirmation bias. Both selective and incidental exposure affected attitudes per message stance, with stronger impacts for selective exposure. Opinion climate perceptions mediated selective exposure impacts on attitudes.  相似文献   

模拟低氧训练对大鼠红细胞流变性的影响     

杜美珍 《忻州师范学院学报》2012,28(2):119-121

目的:旨在观察2800m海拨高度的训练对大鼠血红蛋白及红细胞流变性的影响。方法:采用SD(Sprague-Dewley)大鼠40只,随机将其分为常氧常压组(LN),常氧常压训练组(LNT),低氧低压组(LH),低氧低压训练组(LHT)。LN、LNT组和LH、LHT分别置于正常海拔高度与相当于2800m的生活条件下,其训练环境同生活环境保持一致。LNT和LHT组分别在所控制的环境中,进行为期五周的训练。每周训练五天。结果:发现五周的低氧刺激或低氧训练,LH和LHT组的血红蛋白含量、红细胞压积和红细胞变形能力均显著升高(P<0.05),但LN和LNT组未发生显著变化。结论:五周的低氧刺激或低氧训练,均能提高大鼠机体内的血红蛋白含量、红细胞压积和红细胞变形能力,低氧刺激与低氧结合训练刺激所产生的效果并没有显著性差异。  相似文献   

浅谈高职艺术专业摄影教学中需着重强调的几个问题     

徐开秋 《天津职业院校联合学报》2012,14(9):40-42,45

对学生的实际拍摄过程和作品分析发现,学生摄影作品中,艺术的体现的确存在相当程度的不足;在实际拍摄过程中,表现出的对单反相机驾驭操控能力的欠缺也普遍存在。目前摄影教学中表现出来的问题,不只是技术或者艺术哪一个单方层面的偏颇,过于推崇“技术流”或“艺术流”都是片面的,技术与艺术并重的“两条腿走路”才是应该提倡的教学和学习方法。  相似文献   

Unraveling the relationships between smartphone use,exposure to heterogeneity,political efficacy,and political participation: a mediation model approach     

Chang Sup Park  Kavita Karan 《亚洲交流杂志》2013,23(4):370-389

This paper assesses how use of smartphones relates to exposure to heterogeneity, political efficacy, and political engagement and suggests a new mediation model that can be applied to mobile communication. Drawing on online survey data collected during the 2012 presidential election in South Korea, this study finds that exposure to heterogeneity and political efficacy jointly mediate the impact of informational uses of smartphones on political participation. The current study also shows that informational uses of smartphones are significantly related to encounters with heterogeneity, political efficacy, and participatory behaviors. Additionally, recreational uses of smartphones were found to have a positive association with exposure to heterogeneity. However, relational uses of smartphones were not associated with democratic outcomes. The findings suggest that smartphones, by increasing the possibility of encountering diversity and subsequently enhancing political efficacy, create an additional pathway to citizen engagement in democratic processes.  相似文献   

Human Genetic Databases on the Internet     

《Medical reference services quarterly》2013,32(2):49-54

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Multilingual language use and television exposure and preferences: The case of Belize 1     

George A. Barnett  Omar Souki Oliveira  J. David Johnson 《Communication quarterly》2013,61(4):248-261

This paper discusses the relationship between the language use patterns of multilinguals and their media preferences and exposure. Specifically, it examines the language behavior of multilinguals in Belize where television is available in both English and Spanish. A survey of Belizean high school students conducted in both languages, asked about their sociolinguistic patterns and media preferences and exposure. The results indicate that the frequency of a particular language's use correlates with preferences for and exposure to television in that language. This relationship is more pronounced when specific cultural programming is considered.  相似文献   

Educating the emotional self: the role home plays in a child's method of communicating life stories in a classroom space     

Hillarie J. Higgins 《Education 3-13》2013,41(5):451-472

This article discusses the risks and possibilities of communicating and educating the child's emotional self in a formal classroom environment. Through designing and implementing an expressive arts curricular intervention in a Scottish primary school classroom, my research produces an example of how therapeutic notions focused upon health and wellbeing can be integrated into contemporary education. Four case studies are provided to exemplify how individual children made particular sense of emotional expression through their own lens of interactive communication with parental figures. This article argues that educators' active and ongoing awareness of boundaries, disclosure and exposure will determine the ethical nature of a child's educational experience with emotional expression.  相似文献   

影响血液尿素测量值的实验室因素     

申醒 《武汉体育学院学报》1999,(5)

观察了实验室自然光照对二乙酰一肟法测定血尿素结果的影响。发现光照对测量结果有显著影响。提示测量过程中要避免室外光直接照射  相似文献   

Free radical generation and lipid peroxidation among the dry cell industry workers exposed to carbon     

K. K. Reddy  T. P. K. Reddy  B. V. Somasekharaiah  K. Soorya Kumari 《Indian journal of clinical biochemistry : IJCB》1998,13(1):27-32

A total of 75 healthy male dry cell industry workers exposed to carbon for 5, 8 and 10 years were compared with 48 controls matched for age and economic status with respect to free radical generation, lipid peroxidation and antioxidant levels. Lymphocytes were seperated from the whole blood and used for estimation of free radicals and antioxidants. Plasma lipid peroxidation products were estimated in the form of thiobarbituric acid reactive substances. Significant increase in free radical generation and lipid peroxidation products were observed in carbon exposed population than controls, and the increase was found to be significant with increase in the period of exposure. The levels of antioxidants i.e., superoxide dismutase (SOD) and catalase were found to decrease with the increase in exposure to carbon in industrial workers. These results suggest that exposure to carbon augments free radical generation, lipid peroxidation and promotes decline in antioxidant enzymes.  相似文献   

3-min whole body cryotherapy/cryostimulation after training in the evening improves sleep quality in physically active men     

Wafa Douzi  Olivier Dupuy  Maxence Tanneau  Geoffroy Boucard  Romain Bouzigon 《European Journal of Sport Science》2019,19(6):860-867

Exercise training during evening may disturb sleep patterns and hinder recovery process. The present study aimed to examine the effect of whole body cryotherapy (WBC) exposure after training in the evening on sleep quality and night heart rate variability (HRV). A total of 22 physically active men were randomized to undergo either WBC (3-min at ?40°C, wind speed of 2.3?m?s^?1) or passive recovery (control) following an evening training consisting of 25?min of continuous running at 65% of the maximal aerobic speed (MAS) followed by intermittent running at 85% of the MAS. Each night following the training, the number of movements and HRV during sleeping time were recorded. The next morning, subjective sleep quality and perceived pain were assessed using Spiegel questionnaire and a visual analogue scale, respectively. The number of movements during the night following WBC was significantly reduced (p?p?p?p?p?相似文献