The e-textbook is one of the main resources that distance learning institutions make available in virtual environment (VLE) for teachers and students. According to Brazilian References Distance Learning, authors should follow some methodological, epistemological political principles its production: allow students (educator tutor) construct knowledge through interaction with peers. In this paper...

The large attention-based encoder-decoder network (Transformer) has become prevailing recently due to its effectiveness. But the high computation complexity of decoder raises inefficiency issue. By examining mathematic formulation decoder, we show that under some mild conditions, architecture could be simplified by compressing sub-layers, basic building block Transformer, and achieves a higher ...

In the process of mathematics learning, most elementary students never think but receive all the methods their teachers have taught. In other word, they don’t catch the basic concept in every unit. Based on the Petri-Net theory, this paper designs a guided learning system to correct the mis conception of elementary students. We expect to achieve the best effect of computer-assisted instruction ...

The aim of this study was to develop a mathematic model to describe the relationship between magnitude of applied force and rate of orthodontic tooth movement. Initially, data were extracted from experimental studies in dogs (beagles), in which controlled, standardized forces were used to move mandibular second premolars distally. Curve-fitting by nonlinear regression analysis provided an equat...

Abstract: The objective of this research was to find out students’ learning activity on Linear Equation System Two Variables subject using Geogebra media, if there an increase in the mathematic communication skills and describe media. This conducted at SMP Negeri 1 Ngusikan. Based data school, still low, so use media expected skills. applying qualitative research. were collected by tests interv...

Abstract: A significant amount of research efforts has been given to explore the mathematical basis for 3D dimensional and geometric tolerance representation, analysis, and synthesis. However, engineering semantics is not maintained in these mathematic models. It is hard to interpret calculated numerical results in a meaningful way. In this paper, a new semantic tolerance modeling scheme based ...

Cross-sectional echocardiography was used to quantify volume in 21 canine left ventricles that were fixed in formalin and immersed in mineral oil. Area, length and diameter measurements were obtained from short- and long-axis cross-sectional images of the left ventricle and volume was calculated by seven mathematic models. Calculated volume was then compared, by linear regression and percent er...