scholarly journals NONLINEAR DYNAMIC MOTIVATION-ORIENTED TAXONOMY OF L2 STRATEGIES BASED ON COMPLEX DYNAMICS SYSTEMS THEORY

2019 ◽  
Vol 19 (1) ◽  
pp. 9-29
Author(s):  
Akbar Bahari
Keyword(s):  
Systems Theory ◽  
Nonlinear Dynamic ◽  
Complex Dynamics ◽  
Dynamic Motivation

scholarly journals Use of Nonlinear Dynamic Motivational Strategies to Manage L2 Academic Entitlement and Psychological Reactance

2020 ◽  
Vol 6 (1) ◽  
pp. 18-38 ◽  
Author(s):  
Akbar Bahari
Keyword(s):  
Nonlinear Dynamic ◽  
Complex Dynamics ◽  
Teaching Strategy ◽  
Psychological Reactance ◽  
Academic Entitlement ◽  
Motivational Strategies ◽  
Pedagogical Tool ◽  
L2 Motivation ◽  
Methodological Triangulation ◽  
Independent Variable

Expanding the dynamicity and nonlinearity of L2 motivation introduced by Bahari (2019a) based on the complex dynamics systems theory has served as the theoretical framework to introduce and contextualize nonlinear dynamic motivational strategies (NDMSs). The present study used the NDMSs to manage L2 academic entitlement and psychological reactance as two obstructive factors in the L2 learning-teaching process. For conceptualization purposes, a mixed methods approach was conducted among teachers as well as learners to examine the effectiveness of proposed strategies as a pedagogical tool to manage and minimize these obstructive factors in academic contexts. The observed effectiveness of the NDMSs at managing and minimizing the analyzed obstructive factors along with replacing teacher-centered and test-oriented L2 classrooms with a learner-friendly motivating L2 classroom has significant pedagogical and theoretical implications. The major finding of the study following a rigorous methodological triangulation of the data that was collected confirms the effectiveness of the NDMSs as an L2 teaching strategy to cater to the diversity of individual differences for the purpose of improving teacher-learner interactions. Drawing on the results, it can be safely concluded that the NDMSs as the independent variable of the study showed significant impact on managing and minimizing academic entitlement and psychological reactance.

Influence of Tool Flank Forces on Complex Dynamics of Cutting Process

2014 ◽  
Vol 24 (09) ◽  
pp. 1450115 ◽  
Author(s):  
Rafal Rusinek ◽  
Marian Wiercigroch ◽  
Pankaj Wahi
Keyword(s):  
System Dynamics ◽  
Nonlinear Dynamic ◽  
Complex Dynamics ◽  
Cutting Process ◽  
Bifurcation Diagrams ◽  
Cutting Depth ◽  
Factors Affecting ◽  
Stabilizing Effect ◽  
Cutting Velocity ◽  
Insight Into

We study complex dynamics of a cutting process, a recently developed frictional model of cutting process in [Rusinek et al., 2014] to gain better insight into the mechanics of frictional chatter and the factors affecting it. The new model takes into account the forces acting on the tool face as well as on the tool flank. We first present nonlinear dynamic behavior using bifurcation diagrams for nominal cutting depth and cutting velocity as the bifurcation parameters. Finally, the influence of the various forces on the tool flank on the system dynamics has been systematically studied. This has been performed by comparing the bifurcation diagrams with and without the forces on the flank. These flank forces have been found to largely have a stabilizing effect. These forces however increase the complexity of the solutions and are responsible for some instabilities in the low cutting velocity regime.

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