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BACKGROUND Problem-based learning (PBL) is a pedagogical approach based on problems. Specifically, it is a student-centered, problem-oriented teaching method that is conducted through group discussions. The aim of our study is to explore the effects of PBL in diagnostic teaching for Chinese medical students. METHODS A prospective, randomized controlled(More)
BACKGROUND Interpreting an electrocardiogram (ECG) is not only one of the most important parts of clinical diagnostics but also one of the most difficult topics to teach and learn. In order to enable medical students to master ECG interpretation skills in a limited teaching period, the flipped teaching method has been recommended by previous research to(More)
OBJECTIVE To research the 3(')-daidzein sulfonic sodium's (DSS) effect on anti-oxidation of retinal ischemia/reperfusion (RI/R) injury in rats. METHODS RI/R in rats was made by reperfusion for 1 h after occlusion of common carotid artery (CCA) for 1 h and the rats were divided into four groups randomly, including sham control group, model group of RI/R(More)
In this paper, the fracture problems appearing in operation and the reasons of the welded bogie frames of railway vehicles were explained firstly, and the current design situation of fatigue life and reliability of bogie frame were summarized. The railway vehicle design standard, which plays a decisive role in the bogie frame design, was analyzed. The(More)
The soil constitutive relation is one of the important issues in soil mechanics. It is very difficult to establish mathematical models because of the complexity of soil mechanical behavior. We propose a new method of neural network analysis for establishing soil constitutive models. Based on triaxial experiments of sand in the laboratory, the nonlinear(More)
M-learning, another new learning model following digital learning is a new hot spot in the research domain of Educational Technology.As a new branch of E-learning,it has increasingly brought people’s attention.How to support learning and teaching with wireless technology and mobile equipments have become the focus of research of M-learning. This(More)
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