Amount,content and context of infant media exposure: a parental questionnaire and diary analysis     

Rachel Barr  Catherine Danziger  Marisa E. Hilliard  Carolyn Andolina  Jenifer Ruskis 《International Journal of Early Years Education》2010,18(2):107-122

Recent research has indicated that there are long‐term consequences of early media exposure. This study examined the amount, content and context of television exposure across the infancy period in the USA. Parents of 308 infants aged 6–18 months completed questionnaires detailing parental attitudes regarding their children’s television use and 24‐hour television diaries to provide an accurate measurement of household television usage. Television exposure during infancy varied as a function of infant age, sibling status, socio‐economic status and parental attitudes toward television. Regression analyses indicated that parental attitudes were not associated with the amount of television exposure, but were associated with the content of television exposure. These findings indicate that television exposure changes rapidly across infancy and is associated with parental attitudes.  相似文献   

新时期现实主义理论的深化——以“伤痕文学”的争论现象为关注点     

李国  刘千秋 《临沂师范学院学报》2010,32(2):60-63

现实主义理论往往表现为两种态势,即现实主义方法和现实主义精神。新时期现实主义的深化就形成了两条主要的线索：一是关注现实的真实性;二是现实主义审美品格的深化。这种种变化的源头离不开“伤痕文学”绽现时所产生的对现实主义理论争议,毕竞争论意味着对一种价值体系的不断参照与超越。也正是对“暴露与歌颂”、“悲剧性”、“真实性”等诸多关键词的争论,才逐步形成了新时期现实主义多层次、全方位、立体化的大观景象。  相似文献   

论基层人民政府财政信息公开——从四川“全裸”乡政府事件说开去     

李靓 《黄石理工学院学报(人文社科版)》2010,27(4):22-24,42

随着经济社会的快速发展,公民知悉基层人民政府财政信息的需求日益增加。信息透明也是阳光政府运行的第一步。网上盛传的四川＂全裸＂乡政府事件带给我们深深的思考。文章从宪政的角度,阐述了基层人民政府信息公开的法律依据、现实意义、困境以及完善与优化措施等内容。  相似文献   

不同低氧暴露对人红细胞硫氧还蛋白过氧化物酶PeroxiredoxinⅡ的影响     

胡永欣 《广州体育学院学报》2012,32(3):84-87

目的:观察模拟高住组和间歇性低氧组经过四周低氧暴露后,人红细胞硫氧还蛋白过氧化物酶Peroxiredoxin2的变化。方法:男性大学生20名随机分成对照组、模拟高住组和间歇性低氧组,三组从事相同的身体活动、学习和生活作息,模拟高住组每天8hr低氧环境睡眠,间歇性低氧组每天安静状态吸低氧(浓度14%-10%)50-60min,连续4周。三组均在实验开始前、结束后按Bruce方案进行力竭运动,并在安静和运动后取血测试Prx2、MDA。在低氧训练实验开始前一天、实验的最后一天取血测定红细胞数目、血红蛋白及红细胞压积。结果:(1)一次性力竭运动后,Prx2的变化不大,而经过四周低氧暴露后,在完成力竭运动前,模拟高住组Prx2有升高趋势,在间歇性低氧组则达到显著性;力竭运动后,Prx2的升高在低氧组都达到了显著性;(2)力竭运动后,三组MDA明显增多,低氧暴露前后低氧组无明显变化;(3)低氧组都未观察到红细胞计数和压积、血红蛋白浓度的明显变化。结论:长时间低氧暴露可诱导Prx2的生成增多。  相似文献   

汉文化起源辨析:考古学历史语言学的观点     

谢若秋 《山西师大学报(社会科学版)》2009,36(4)

在汉语史的研究中,有许多问题似乎都指向汉语的最初形成过程.近年来考古学的研究成果表明,华夏文明是一个多元混合而成的文明,汉语的形成也极有可能与此相类.夏商周不同源,其语言自然也不是同一种.但夏商周存在密切接触,其语言接触自然也存在.而周的来源还有北方胡狄成分.因此我们可以推想,汉语的形成曾是一个复杂的混合过程.  相似文献   

Assessement of Blood Lead and Cadmium Levels in Occupationally Exposed Workers of Jodhpur,Rajasthan     

Taru Goyal  Prasenjit Mitra  Preeti Singh  Shailja Sharma  Praveen Sharma 《Indian journal of clinical biochemistry : IJCB》2021,36(1):100

In spite of the established knowledge regarding their toxicities, occupational exposure to heavy metals like lead and cadmium still continues because of their wide distribution in environment. Due to lack of awareness, most of the workers usually eat, smoke, drink at their workplace which may aggravate the metal exposure. The present study was planned to assess the blood levels of lead and cadmium in occupationally exposed workers of Jodhpur (India). A total of 110 individuals working in different industrial set ups (furniture, metal handicraft, welders) of Jodhpur district (exposed group), aged between 20 and 60 years and 97 apparently healthy people (controls) with no history of occupational heavy metal exposure aged between 25 and 60 were recruited. Details of personal habits and demographics were recorded by means of self-developed questionnaire. 5 ml of whole blood was drawn from every individual. Metal levels were measured by graphite furnace atomic absorption spectrophotometer. Statistical analysis was done using GraphPad Prism Software. Results showed that Blood Lead Level and Blood Cadmium Level (CdB) were significantly higher in the exposed group as compared to the non-exposed group. Significant age and gender-based differences were found in terms of blood cadmium levels but no such difference was observed in case of blood lead. The study also revealed that higher blood levels of these metals in workers are influenced by their occupational practices, lack of protection against workplace environment pollutants, thus increasing their susceptibility to metal toxicity.  相似文献   

Trajectories of post-traumatic stress and externalizing psychopathology among maltreated foster care youth: A parallel process latent growth curve model     

《Child abuse & neglect》2017

Few longitudinal studies have analyzed how violence exposure (e.g. child maltreatment, witnessing community violence) influence both externalizing and Post-Traumatic Stress (PTS) symptoms among children in foster care. Data from three waves of the National Survey of Child and Adolescent Well-Being (1999–2007) (NSCAW; National Data Archive on Child Abuse and Neglect, 2002) were analyzed to investigate the change trajectories of both externalizing and PTS symptomatology among children with a substantiated report of child maltreatment by Child Protective Services (CPS) between October 1999 and December 2000. This study uses data collected at three time points: baseline and approximately 18 (Wave 3) and 36 (Wave 4) months post-baseline. The Child Behavior Checklist (CBCL) scale measured externalizing symptoms and the Post Traumatic Stress Disorder section of a version of the Trauma Symptom Checklist for Children (TSCC) provided the measure of current trauma-related symptoms or distress. Analyses were conducted using a parallel process growth curve model with a sample of n = 280 maltreated youth between the ages of 8 and 15 following home removal. Findings revealed that initial levels of externalizing and PTS symptomatology were both significantly and positively related and co-develop over time. Externalizing symptom severity remained in the borderline range during the first two years in out-of-home care. Both direct and indirect forms of interpersonal violence exposure were associated with initial level of externalizing symptom and PTS symptom severity, respectively. Taken together, our results suggest an underlying process that links early violence exposure to the co-development and cumulative impact of PTS on externalizing behavior above and beyond experiences of maltreatment. We conclude by discussing the key points of intervention that result from a more nuanced understanding of the longitudinal relationship between PTS and externalizing symptoms and the effect of complex trauma on growth in these symptoms over time.  相似文献   

耐候钢焊接接头锈层稳定化大气曝晒加速试验     

张万灵  刘建容  程鹏  陈浮 《武汉工程职业技术学院学报》2014,(1):6-8

利用锈层稳定化处理的耐候钢焊接接头,进行了大气曝晒(喷淋)加速试验,结果证明:经表面复合处理剂处理后的Q450NQR1耐候钢,腐蚀率显著降低,不仅提高了耐蚀性,而且也提高了抗局部腐蚀能力。经表面复合处理剂处理的焊接接头与非焊接样的腐蚀试验结果没有差别,说明表面复合处理剂适用于焊接接头的锈层稳定化处理。  相似文献   

暴露与歌颂问题的论争演变     

李建立 《商丘职业技术学院学报》2014,(4):65-66

暴露与歌颂问题的论争是中国现代文学理论史上一个十分突出的问题。在中国新文学特别是现实主义文学的演变过程中,这一论争从未终止,直到20世纪40年代,这一论争才以政治方法得以解决。从这一问题的发展轨迹,可以看出中国现代文学在发展历程中明显的政治化倾向。  相似文献   

Types of adolescent exposure to violence as predictors of adult intimate partner violence     

Scott Menard  Andrea J. Weiss  Robert J. Franzese  Herbert C. Covey 《Child abuse & neglect》2014

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