Increasing Positive Playground Interaction for Kindergarten Students at Risk for Emotional and Behavioral Disorders     

Darlene H. Anderson  Scott M. Trinh  Paul Caldarella  Blake D. Hansen  Michael J. Richardson 《Early Childhood Education Journal》2018,46(5):487-496

Students who experience social withdrawal and anxiety (internalizing difficulties) are often overlooked in schools due to the covert nature of their symptoms. The literature lacks empirically supported preventive approaches for kindergarten students who are socially withdrawn and behind their peers in developing social skills. Furthermore, research suggests that parents often are not adequately involved in interventions during this critical period of social development. In response to this need, a school-based intervention was implemented to increase the positive social interaction of three kindergarten students on the playground. Treatment consisted of (a) social skills training, (b) adult mediation, (c) self-evaluation and reinforcement, and (d) parent involvement through home notes. The effects of this intervention were assessed on the playground during recess using partial interval recording of target students’ positive interactions. During implementation of the intervention, all target students demonstrated improvements in social interaction. Future studies should investigate whether addressing the limitations of this study would yield stronger results with this underserved population.  相似文献   

Distribution of moisture in reconstructed oil paintings on canvas during absorption and drying: A neutron radiography and NMR study     

Roel Hendrickx  Ester S.B. Ferreira  Jaap J. Boon  Guylaine Desmarais  Dominique Derome  Lora Angelova 《文物保护研究》2017,62(7):393-409

Moisture is a driving factor in the long-term mechanical deterioration of canvas paintings, as well as for a number of physico–chemical degradation processes. Since the 1990s a number of publications have addressed the equilibrium hygroscopic uptake and the hygro-mechanical deformation of linen canvas, oil paint, animal glue, and ground paint. In order to visualise and quantify the dynamic behaviour of these materials combined in a painting mock-up or reconstruction, we have performed custom-designed experiments with neutron radiography and nuclear magnetic resonance (NMR) imaging. This paper reports how both techniques were used to obtain spatially and temporally resolved information on moisture content, during alternate exposure to high and low relative humidity, or in contact with liquids of varying water activities. We observed how the canvas, which is the dominant component in terms of volumetric moisture uptake, absorbs and dries rapidly, and, due to its low vapour resistance, allows for vapour transfer towards the ground layer. Moisture desorption was generally found to be faster than absorption. The presence of sizing glue leads to a local increase of moisture content. It was observed that lining a painting with an extra canvas results in a damping effect: i.e. absorption and drying are significantly slowed down. The results obtained by NMR are complementary to neutron radiography in that they allow accurate monitoring of water ingress in contact with a liquid reservoir. Quantitative results are in good agreement with adsorption isotherms. The findings can be used for risk analysis of paintings exposed to changing micro-climates or subjected to conservation treatments using water. Future studies addressing moisture-driven deformation of paintings can make use of the proposed experimental techniques.  相似文献   

Research agenda for social and collaborative information seeking     

Chirag Shah  Rob Capra  Preben Hansen 《Library & information science research》2017,39(2):140-146

Scholars in diverse fields of inquiry have identified the need to expand individual-based information seeking and behavior models and systems to incorporate social as well as collaborative dimensions. However, the research areas of Social Information Seeking (SIS) and Collaborative Information Seeking (CIS) have been largely disconnected from one another despite a few notable attempts to study them under one umbrella. Researchers in these communities have recently realized the value of bringing SIS and CIS together for two main reasons: often it is impossible to separate social and collaborative dimensions in a project; and by considering these two aspects of information seeking, we may be able to support human information behavior in ways not previously possible. A brief synthesis of work in the domains of SIS and CIS is presented here. Then, an integrated view is presented to consider Social and Collaborative Information Seeking (SCIS) as an intersection and extension of SIS and CIS. Benefits of this approach are discussed and the integrated view is used as the basis to present a research agenda that outlines opportunities and challenges unique to SCIS.  相似文献   

情人节     

Mark Hansen 《海外英语》2007,(1):23

Valentine's Day has come and gone for this year, and I only got one small present. That may sound like I'm complaining, but I'm not, for it was the most wonderful gift I have ever received on that special day.  相似文献   

IMPROVING PRODUCTIVITY IN THE NEWSROOM?     

Peter Bro  Kenneth Reinecke Hansen  Ralf Andersson 《Journalism Practice》2016,10(8):1005-1018

In an attempt to produce more news stories, faster and on different platforms, the national Danish Broadcasting Corporation, DR, has introduced a new workflow. This new workflow is based on principles and practices known internally as “the news engine,” and it has brought with it changes in regards to both the news products, the news processes and the individual news producers. This article is based on newsroom observations, interviews with employees and content analyses, and it shows how the practice of journalism at DR News has been altered in several ways after the implementation of the news engine. The changes in DR News have become the inspiration for other television stations, and the study concludes by discussing how this particular workflow affects the profession of journalism. Rather than a proletarianization of the profession, this study points to a polarization where some journalists experience a deskilling and a decrease in autonomy, while others experience an increase in autonomy as part of a process of reskilling and multiskilling.  相似文献   

Development of feedforward control in a dynamic manual tracking task     

van Roon D  Caeyenberghs K  Swinnen SP  Smits-Engelsman BC 《Child development》2008,79(4):852-865

To examine the development of feedforward control during manual tracking, 117 participants in 5 age groups (6 to 7, 8 to 9, 10 to 11, 12 to 14, and 15 to 17 years) tracked an accelerating dot presented on a monitor by moving an electronic pen on a digitizer. To remain successful at higher target velocities, they had to create a predictive model of the target's motion. The ability to track the target at higher velocities increased, and the application of a feedback-based step-and-hold strategy decreased with age, as shown by increases in maximum target velocity and decreases in number of stops between ages 6–7 and 8–9 and between ages 8–9 and 10–11. The ability to exploit feedforward control in a dynamic tracking task improves significantly with age.  相似文献   

Estimating High School GPA Weighting Parameters With a Graded Response Model     

John Hansen  Philip Sadler  Gerhard Sonnert 《Educational Measurement》2019,38(1):16-24

The high school grade point average (GPA) is often adjusted to account for nominal indicators of course rigor, such as “honors” or “advanced placement.” Adjusted GPAs—also known as weighted GPAs—are frequently used for computing students’ rank in class and in the college admission process. Despite the high stakes attached to GPA, weighting policies vary considerably across states and high schools. Previous methods of estimating weighting parameters have used regression models with college course performance as the dependent variable. We discuss and demonstrate the suitability of the graded response model for estimating GPA weighting parameters and evaluating traditional weighting schemes. In our sample, which was limited to self‐reported performance in high school mathematics courses, we found that commonly used policies award more than twice the bonus points necessary to create parity for standard and advanced courses.  相似文献   

Remembering what we know: the case for democratic education     

David T. Hansen 《课程研究杂志》2013,45(5):459-465

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From the Editor     

Harlan S. Hansen 《Journal of Early Childhood Teacher Education》2013,34(1)

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Behavioural disorders in Danish schools: a qualitative analysis of background factors     

Niels Egelund  Kim Foss Hansen 《欧洲特需教育杂志》2013,28(3):285-296

A national survey has shown that the incidence of serious behavioural problems in Danish schools stands at 10 per cent. The present qualitative study makes use of a broad-spectrum ecological model in the search for aetiological factors underlying behavioural disturbance. The study covers 34 typical Danish schools matched in pairs on the basis of degree of disturbance in the national survey. The results indicate behavioural problems to be related more to system factors than to purely individual factors.  相似文献