Depression and Anxiety in the Postnatal Period: An Examination of Infants’ Home Language Environment,Vocalizations, and Expressive Language Abilities     

Ruth Brookman  Marina Kalashnikova  Janet Conti  Nan Xu Rattanasone  Kerry-Ann Grant  Katherine Demuth  Denis Burnham 《Child development》2020,91(6):e1211-e1230

This longitudinal study investigated the effects of maternal emotional health concerns, on infants’ home language environment, vocalization quantity, and expressive language skills. Mothers and their infants (at 6 and 12 months; 21 mothers with depression and or anxiety and 21 controls) provided day-long home-language recordings. Compared with controls, risk group recordings contained fewer mother–infant conversational turns and infant vocalizations, but daily number of adult word counts showed no group difference. Furthermore, conversational turns and infant vocalizations were stronger predictors of infants’ 18-month vocabulary size than depression and anxiety measures. However, anxiety levels moderated the effect of conversational turns on vocabulary size. These results suggest that variability in mothers’ emotional health influences infants’ language environment and later language ability.  相似文献   

Media Accountability and Journalists: To Whom Do Spanish Professionals Feel Responsible?     

María-Ángeles Chaparro-Domínguez  Juan-Carlos Suárez-Villegas  Ruth Rodríguez-Martínez 《Journalism Practice》2020,14(7):812-829

ABSTRACT

This paper analyses to whom Spanish journalists feel responsible. To achieve this objective, we sent out a survey to Spanish journalists to ascertain their opinion on this question. The journalists’ point of view was then compared with that of the general public though six focus groups consisting of Spanish citizens from six cities in Spain (Barcelona, Castellón, Madrid, Sevilla, Mondragón and Santiago de Compostela). Lastly, five in-depth interviews were conducted with journalism experts (e.g., directors of professional journalist associations). The main results show that the journalists feel particularly responsible to their conscience, the journalism code of ethics and their sources. The citizens, in contrast, believe that journalists should be responsible to the audience. We contextualised the Spanish finding in the European context by comparing our results with those derived from a study among European journalists.  相似文献   

Impact of age on host responses to diet-induced obesity:Development of joint damage and metabolic set points     

Kelsey H.Collins  Graham Z.MacDonald  David A.Hart  Ruth A.Seerattan  Jaqueline L.Rios  Raylene A.Reimer  Walter Herzog 《运动与健康科学(英文)》2020,9(2):132-139,197

Background:Osteoarthritis is one of the leading causes of pain and disability worldwide,and a large percentage of patients with osteoarthritis are individuals who are also obese.In recent years,a series of animal models have demonstrated that obesity-inducing diets can result in synovial joint damage(both with and without the superimposition of trauma),which may be related to changes in percentage of body fat and a series of low-level systemic inflammatory mediators.Of note,there is a disparity between whether the dietary challenges commence at weaning,representing a weanling onset,or at skeletal maturity,representing an adult onset of obesity.We wished to evaluate the effect ofthe dietary exposure time and the age at which animals are exposed to a high-fat and high-sucrose(HFS) diet to determine whether these factors may result in disparate outcomes,as there is evidence suggesting that these factors result in differential metabolic disturbances.Based on dietary exposure time,we hypothesized that rats fed an HFS diet for 14 weeks from weaning(HFS Weanling) would demonstrate an increase in knee joint damage scores,whereas rats exposed to the HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult) and rats exposed to a standard chow diet(Chow)would not display an increase in knee joint damage scores.Methods:Male Sprague-Dawley rats were fed either an HFS diet for 14 weeks from weaning(HFS Weanling) or an HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult).At sacrifice,joints were scored using the modified Mankin Criteria,and serum was analyzed for a defined subset of inflammatory markers(Interleukin-6,leptin,monocyte chemoattractant protein-1,and tumor necrosis factorα).Results:When the HFS Weanling and HFS Adult groups were compared,both groups had a similar percent of body fat,although the HFS Weanling group had a significantly greater body mass than the HFS Adult group.The HFS Weanling and HFS Adult animals had a significant increase in body mass and percentage of body fat when compared to the Chow group.Although knee joint damage scores were low in all 3 groups,we found,contrary to our hypothesis,that the HFS Adult group had statistically significant greater knee joint damage scores than the Chow and HFS Weanling groups.Furthermore,we observed that the HFS Weanling group did not have significant differences in knee joint damage scores relative to the Chow group.Conclusion:These findings indicate that the HFS Weanling animals were better able to cope with the dietary challenge of an HFS diet than the HFS Adult group.Interestingly,when assessing various serum proinflammatory markers,no significant differences were detected between the HTS Adult and HFS Weanling groups.Although details regarding the mechanisms underlying an increase in knee joint damage scores in the HFS Adult group remain to be elucidated,these findings indicate that dietary exposure time maybe less important than the age at which an HFS diet is introduced.Moreover,increases in serum proinflammatory mediators do not appear to be directly linked to knee joint damage scores in the HFS Weanling group animals but may be partially responsible for the observed knee joint damage in the adults over the very short time of exposure to the HFS diet.  相似文献   

Writing across the academic languages: introduction     

Silliman  Elaine R.  Bahr  Ruth Huntley  Wilkinson  Louise C. 《Reading and writing》2020,33(1):1-11

Reading and Writing -  相似文献   

Correction to: Using feedback requests to actively involve assessees in peer assessment: effects on the assessor’s feedback content and assessee’s agreement with feedback     

Michiel Voet  Mario Gielen  Ruth Boelens  Bram De Wever 《European Journal of Psychology of Education - EJPE》2018,33(4):771-773

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Computer implementation of the Schwarz-Christoffel transformation     

William Squire 《Journal of The Franklin Institute》1975,299(5):315-322

A modified Romberg procedure for evaluating complex integrals is applied to the computation of the Schwarz-Christoffel transformation. An iterative procedure proposed by Wassmuth is used to determine the constants of the transformation for flow past a polygonal boundary. The flow in a rectangular cavity and past a rectangular bump are computed.  相似文献   

From the Editor’s Desk     

Ruth Trinidad Galván  Enrique G. Murillo 《Journal of Latinos & Education》2017,16(4):273-275

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The Role of Intuitive Rules in Science and Mathematics Education     

Ruth Stavy  Dina Tirosh 《欧洲师范教育杂志》1996,19(2):109-119

During the last two decades many researchers in mathematics and science education have studied students’ conceptions and ways of reasoning in mathematics and science. Most of this research is content‐specific. It was found that students hold alternative ideas that are not always compatible with those accepted in science. It was suggested that in the process of learning science or mathematics, students should restructure their specific conceptions to make them conform to currently accepted scientific ideas. In our work in mathematics and science education it became apparent that some of the alternative conceptions in science and mathematics are based on the same intuitive rules. We have so far identified two such rules: “More of A, more of B”, and “Subdivision processes can always be repeated”. The first rule is reflected in subjects’ responses to many tasks, including all classical Piagetian conservation tasks (conservation of number, area, weight, volume, matter, etc.) in all tasks related to intensive quantities (density, temperature, concentration, etc.) and in all tasks related to infinite quantities. The second rule is observed in students’, preservice and inservice teachers’ responses to tasks related to successive division of material and geometrical objects and in seriation tasks. In this paper, we describe and discuss these rules and their relevance to science and mathematics education.  相似文献   

Influences of Teacher–Child Social Interactions on English Language Development in a Head Start Classroom     

Ruth Alfaro Piker  Lesley A. Rex 《Early Childhood Education Journal》2008,36(2):187-193

Increasing numbers of Spanish-speaking preschool children require attention to improve the likelihood of success in school. This study, part of a larger 2-year ethnographic study of a Head Start classroom, elaborates the role of teachers’ interactions with students who were learning English. Using an interactional ethnography approach, the authors focus on the social nature of these interactions. The study illuminates the kinds of teacher interactions with students that support and hinder the students’ language learning. It reinforces the importance of student engagement in social interactions with teachers and with English other than codes of obedience and authority. Finally, it recommends actions teachers can take to provide optimal circumstances for English learning interactions for students.

Lesley A. RexEmail: URL: http://www.umich.edu/~rex/

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Primary teachers’ understanding of the interactive whiteboard as a tool for children’s collaborative learning and knowledge‐building     

Paul Warwick  Ruth Kershner 《Learning, Media and Technology》2008,33(4):269-287

This paper reports on the second phase of a joint teacher/researcher project that explored teachers’ understandings of the potential of the interactive whiteboard (IWB) as a tool for primary school children’s collaborative group work. By examining teachers’ written analyses and discussions of work carried out in their own classrooms, the paper seeks to contribute to the debate about the ways in which the use of IWBs can contribute to changes in pedagogy. It highlights the interrelationships between collaborative learning and factors identified as important in the research carried out by teachers, amongst them the children’s technical skills and confidence, the mediating role of the teacher, the IWB affordances for knowledge‐building and the teachers’ own knowledge, attitudes and professional development. The paper also provides an account of how participation by the teachers in a course with Faculty staff, focused on the collaborative co‐construction of knowledge related to learning and to classroom research grounded in the values and principles of socio‐cultural theory, supported changes in pedagogic practice.  相似文献