Research on Countermeasures to Improve the Effect of Case Teaching in Western Economics Course

A perfect case teaching process is the premise to ensure the case effect of western economics course. At present, there are many deficiencies in the case teaching process of western economics course in China. This paper first analyzes the shortcomings in the case teaching process of western economics course, puts forward perfect ideas, and then points out how to correctly deal with the relationship between case teaching and theoretical teaching, the relationship between teachers' leadership and students' subject, the relationship between case teaching methods and students' quality.

A Randomized Case Series Approach to Testing Efficacy of Interventions for Minimally Verbal Autistic Children

BackgroundRandomized Controlled Trials (RCTs) are the gold standard for assessing whether an intervention is effective; however, they require large sample sizes in order to detect small effects. For rare or complex populations, we advocate a case series approach as a more realistic and useful first step for intervention evaluation. We consider the importance of randomization to such designs, and advocate for the use of Randomization Tests and Between Case Effect Sizes to provide a robust and statistically powerful evaluation of outcomes. In this tutorial, we describe the method, procedures, and analysis code necessary to conduct robust single case series, using an empirical example with minimally verbal autistic children.MethodWe applied a pre-registered (https://osf.io/9gvbs) randomized baseline design with between-case effect size to a case series (n = 19), to test the efficacy of a novel, parent-mediated, app-based speech production intervention (BabbleBooster) for minimally verbal autistic children. Parent-rated probe scores were used to densely sample performance accuracy over time.ResultsParents were able to reliably code their children’s speech productions using BabbleBooster. A non-significant Randomization Test and small Between-Case Effect Size (d = 0.267), suggested there was no evidence that BabbleBooster improved speech production in minimally verbal autistic children, relative to baseline scores, during this brief period of intervention.ConclusionThe current analyses exemplify a more robust approach to examining treatment effects in rare or complex populations, where RCT may be difficult or premature to implement. To facilitate adoption of this method by researchers and practitioners, we provide analysis code that can be adapted using open source R packages. Future studies could use this case series design to evaluate interventions aiming to improve speech and language outcomes for minimally verbal autistic children, and other heterogeneous and hard to reach populations.

Examining L1 influence in L2 word recognition

The present study examined L1 influence in visual L2 word recognition in the area of letter case. Whether an English word is displayed in upper- or lower-case letters may be of little significance to English native speakers, but many ESL speakers from east Asia have found it more difficult to recognize words printed in upper-case letters. Two experiments were conducted to explore two questions: (a) whether there was indeed a case effect in L2 word recognition in that ESL speakers took longer in responding to upper-case words, and (b) whether this case effect only occurred for ESL speakers whose first languages employed a script other than the Roman alphabet. The participants included English native speakers, ESL speakers whose L1s employed the Roman alphabet (the Romance ESL group) and ESL speakers whose L1s did not. They were asked to perform a lexical decision task on English words displayed in either upper- or lower-case letters. In both experiments, a reliable case effect was found for the latter ESL group only. This L1-related case effect raised both theoretical and pedagogical issues to be explored in future research.

Superhydrophobic µ-Pillars via Simple and Scalable SLA 3D-Printing: The Stair-Case Effect and their Wetting Models.

In nature, superhydrophobic surfaces (SHS) exhibit microstructures with several roughness-scales. Scalable fabrication and build-up along the X-Y plane represents the promise of 3D printing technology. Herein we report 3D printed...

Toolpath Strategies for 5DOF and 6DOF Extrusion-Based Additive Manufacturing

This paper introduces two new deposition-strategies for five degrees of freedom (5DOF) and 6DOF extrusion-based additive manufacturing (AM), called the tool path projection- and parent-child-approach, respectively. The tool path projection method can be automated, and allows for the generation of concentric shells layers, which remedy geometrical deviations (known as the stair-case effect) that are typically seen in 3DOF AM processes that potentially require secondary post treatment by machining or grinding of the final part. In the parent-child approach, the designer specifies the manufacturing direction for each distinct feature, thereby helping to remove the need for support material, as well as enabling new features to be dynamically added to the part.

Strength of Axially Loaded Concrete Filled Steel Tube Elements of Self-Stressing Concrete

This work is dedicated to an experimental research of strength and resistance characteristics of axially loaded concrete filled steel tube elements of self-stressing concrete, including high-performance concrete. Labcrete specimens of circular section 112 mm in diameter and 1000 mm in length were used in experiments. The research shows that the use of self-stressing concrete increased the strength of the specimens by approximately 10%, and enhanced elastic behavior limit by 20-33%. In the course of testing self-stressing concrete specimens, registered longitudinal deformations were within 0.52-0.75%. Analysis of the obtained results indicates a significantly greater case effect in the pre-stressed specimens. This effect is somewhat less pronounced in high-performance concrete specimens, yet still prominent.