1,827 research outputs found
Plugged in: How media attract and affect youth
Get PDFNow, as never before, young people are surrounded by media—thanks to the sophistication and portability of the technology that puts it literally in the palms of their hands. Drawing on data and empirical research that cross many fields and continents, authors Valkenburg and Piotrowski examine the role of media in the lives of children from birth through adolescence, addressing the complex issues of how media affect the young and what adults can do to encourage responsible use in an age of selfies, Twitter, Facebook, and Instagram. This important study looks at both the sunny and the dark side of media use by today’s youth, including why and how their preferences change throughout childhood, whether digital gaming is harmful or helpful, the effects of placing tablets and smartphones in the hands of toddlers, the susceptibility of young people to online advertising, the legitimacy of parental concerns about media multitasking, and more. Patti M. Valkenburg is a university distinguished professor of media, youth, and society at the University of Amsterdam. Jessica Taylor Piotrowski is associate professor of youth and media entertainment at the University of Amsterdam
Author inscription in Poems
No full textThis edition includes an author's inscription, "with the regards of J.T. Fields."Fields, James Thomas, 1817-1881
Measuring industry-science links through inventor-author relations: A profiling method
Get PDFIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Assessing the longitudinal relationship between Peruvian children’s TV exposure and unhealthy food consumption
Get PDFStudies have shown that heavy television exposure is a risk factor for childhood overweight and obesity. This relationship is most typically attributed to the influence of food advertising. Despite this growing array of studies, one limitation is that these studies have focused almost exclusively on high-income countries. It is unclear whether such findings hold true in low- or middle-income countries. To address this gap, this study investigated the relationship between television exposure and unhealthy snack consumption (a risk factor for childhood overweight/obesity) in a sample of Peruvian children aged 6–13 (n = 265). Results indicate that television exposure is indeed cross-sectionally and longitudinally related with unhealthy snack consumption. But for children from high socioeconomic status families, this relationship is even more pronounced. These findings justify efforts to help parents manage their children’s television viewing as well as efforts to regulate food advertising in Peru
Reading with hotspots: How young children respond to touchscreen stories
Get PDFWorldwide estimates indicate that toddlers and preschoolers are introduced to mobile technology at an early age, with many now using touchscreens on a daily basis. One of the appeals of touchscreen technology is that it seems to be intuitive to very young children and, at least from anecdotal evidence, they seem to enjoy it. Even the simplest forms of children's touchscreen media often contain hotspots, which are interactive elements of a screen that allow children to touch a picture and obtain an immediate visual and/or auditory response. Despite the fact that children seem to engage haptically with these technological features, little is known about how they use them and how these features may influence their attention to and comprehension of the media content. A detailed understanding of children's verbal and haptic responses, as well as their visual attention and comprehension, is key to gaining a more complete understanding of children's use of this medium. Using an experimental design, in this pilot study, we examine Dutch preschoolers' (age 2–5, n = 78) haptic use (how much and when they use hotspots), verbal responding (i.e., narrative relevant and irrelevant comments), attention, and story comprehension when hotspots are either activated or turned off. Implications for the use of touchscreen media in early childhood, as well as the design of such media, are offered
Content and person effects in media research: Studying differences in cognitive, emotional, and arousal responses to media content
Get PDFCognitive, emotional, and arousal responses to media content stem from two sources of variation: differences in content and differences between individuals. Although the first source of variation (content effects) has been well-studied, individual differences (person effects) in responses to media are investigated much less within communication science. To help build this comparatively thin area of scholarship, this study investigated how four theoretically relevant variables (need for cognition, affective empathy, sensation seeking, and sensory processing sensitivity) affected responses to positively and negatively valenced media entertainment. In a within-subjects design, 243 youth aged 7–15 years (49.4% female) responded to a positive and negative film clip using both self-reported and physiological measures (heart rate and skin conductance), while parents reported on individual differences. Multilevel analysis was used to distinguish between media content effects and individual differences in responses. Results showed that more variation in responses was due to differences between participants than to differences between stimuli. However, need for cognition, affective empathy, sensation seeking, and sensory processing sensitivity did not significantly explain this between-participant variation in responses. Several conceptual and methodological take-aways are offered to advance our understanding of the relationships between stable individual differences and state responses to media.<br/
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Folio of the Tempe Quadrangle, Arizona
No full textThis GI folio comprises a suite of environmental geology maps for the Tempe Quadrangle of Maricopa County, Arizona. Author order varies from map to map, but always comprises T.L. Pewe, C.S. Wellendorf and J.T. Bales. There are 8 maps in total, all maps are at 1:24,000 map scale.Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact [email protected]
Comment on "the exact seismic response of an ocean and a N-layer configuration" by G.G. Drijkonnigen and J.T. Fokkema. Reply Commentaire sur "reponse sismique exacte d' un ocean et configuration a n-couches" par G.G. Drijkoningen et J.T. Fokkema. Reponse
No full textWhich Came First? Assessing Transactional Relationships Between Children's Violent Media Use and ADHD-Related Behaviors
Get PDF© 2018, The Author(s) 2018. This longitudinal study investigated transactional relationships between violent media use and attention-deficit/hyperactivity disorder (ADHD)–related behaviors among young children (ages 4-8 years). To investigate study hypotheses, we employed a random intercept cross-lagged panel model (RI-CLPM) using structural equation modeling with panel data from 890 children. Results provided evidence in support of a media selection process rather than media effects process, whereby an increase in a child’s ADHD-related behaviors predicted an increase in the child’s violent media use 1 year later. Results indicated that this longitudinal relationship was accounted for by within-child fluctuations over time rather than stable between-child differences. The findings highlight the importance of investigating transactional relationships as well as distinguishing between-person and within-person relationships.status: Publishe
Reverse engineering of industrially relevant phenotypes in yeast: An integrated approach
No full textReverse engineering is the study of discovering the structure, function and operation of a device or system with the express aim to reconstruct its key functionalities. This principle is applied to many disciplines, from military, through computer engineering, to health, but also in metabolic engineering. In this context, reverse metabolic engineering examines a particular functionality or phenotype of a cell or culture and subsequently aims to reconstruct it, with the aid of targeted genetic modification, in another cell or culture. Even with increasing knowledge on targeted metabolic engineering, microbial production platforms for fuels and chemicals are often obtained by non-targeted approaches, such as mutagenesis or evolutionary engineering. Reverse engineering of the interesting traits of these microbial platforms not only provides the potential to implement and combine them in other hosts, but also allows for the protection of the resulting intellectual property. The major challenge in reverse metabolic engineering is the elucidation of the molecular mechanisms underlying the phenotype of the strains of interest. In this thesis, various techniques were evaluated for their application in reverse metabolic engineering of a diverse range of industrially relevant phenotypes in the yeast Saccharomyces cerevisiae. Simultaneously, the different analytical methods that were used in these studies were evaluated for their individual and combined contributions.BiotechnologyApplied Science
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