51 research outputs found
Effect of the use of a video tutorial in addition to simulation in learning the maneuvers for shoulder dystocia
The development of video tutorials is flourishing and may make it possible to maintain knowledge learned during instruction with simulation. The aim of this study was to assess the effect of adding a video tutorial to a lecture and simulation for learning the maneuvers and protocol for the management of shoulder dystocia. Student midwives and medical students attended a lecture class including instruction about maneuvers and a presentation of an algorithm for the management of shoulder dystocia. They were randomized into two groups. The video group was reminded every two weeks to watch a short tutorial. The control group was reminded to consult the slide show. At the end of two months, they were evaluated by graders. The practice, theory, and global scores of the students in the video group were significantly higher than those of the students in the control group (14.8 vs. 10.4; 5.6 vs. 3.4; and 9.3 vs. 7.0, P<0.001). The scores for the video group improved at the second simulation session, compared with the first (14.8 vs. 9.9; 5.6 vs. 2.9; and 9.3 vs. 7, P<0.001). The addition of a video tutorial improved learning compared to a standard lecture and simulation session alone
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Start-up rheometry of highly polydisperse magnetorheological fluids: experiments and simulations
An extensive experimental and simulation study is carried out in conventional magnetorheological fluids formulated by dispersion of mixtures of carbonyl iron particles having different sizes in Newtonian carriers. Apparent yield stress data are reported for a wide range of polydispersity indexes (PDI) from PDI = 1.63 to PDI = 3.31, which for a log-normal distribution corresponds to the standard deviation ranging from to . These results demonstrate that the effect of polydispersity is negligible in this range in spite of exhibiting very different microstructures. Experimental data in the magnetic saturation regime are in quantitative good agreement with particle-level simulations under the assumption of dipolar magnetostatic forces. The insensitivity of the yield stresses to the polydispersity can be understood from the interplay between the particle cluster size distribution and the packing density of particles inside the clusters
On the role of awareness systems for supporting parent involvement in young children’s schooling
This paper reports on an investigation of how Awareness Systems can support communication between busy parents and young children at school. The study involved the deployment and test of a rudimentary awareness system so that surveying opinions and wishes regarding this type of technology would be grounded upon concrete experiences. The prototype was installed in a classroom for two weeks and connected five families with their children. Overall, parents appreciated receiving awareness information and did not experience it as an undesirable distraction. Both they and their children did not experience privacy problems. They raised concerns about the possibility of children becoming more dependent upon their parents from such technology and stated they would not want to receive information that they would not be able to react upon
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