Numerical approximation of a two-dimensional model of non-isothermal reactive liquid chromatography involving slow rates of adsorption–desorption kinetics

2020 ◽  
Vol 43 (13-14) ◽  
pp. 516-537
Author(s):  
Kewani Welay Brhane ◽  
Shamsul Qamar
Keyword(s):  
Liquid Chromatography ◽  
Numerical Approximation ◽  
Desorption Kinetics ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Two Dimensional Model ◽  
Reactive Liquid ◽  
Adsorption Desorption

scholarly journals A Simple Example of a Two-Dimensional Model for Traffic: Discussion about Assumptions and Numerical Methods

2018 ◽  
Vol 2672 (20) ◽  
pp. 249-261 ◽  
Author(s):  
Stephane Mollier ◽  
Maria Laura Delle Monache ◽  
Carlos Canudas-de-Wit
Keyword(s):  
Numerical Methods ◽  
Numerical Approximation ◽  
Splitting Method ◽  
Macroscopic Model ◽  
Transmission Model ◽  
Two Dimensional ◽  
Cell Transmission Model ◽  
Dimensional Model ◽  
Model Method ◽  
Two Dimensional Model

This article presents a two-dimensional (2D) macroscopic model for traffic flow on a network. We considered a 2D conservation law in which we suggested a new method to estimate the direction of the velocity using only information and properties of the network. We present an algorithm for the computation of the 2D velocity on the network and present numerical simulations. Moreover, the numerical approximation of the 2D equation was carried out using an operator and splitting method and we present the results of some simulations on realistic networks. Lastly, we propose a comparison with the well-known cell transmission model method.

scholarly journals Analytical solution of a two-dimensional model of liquid chromatography including moment analysis

2014 ◽  
Vol 116 ◽  
pp. 576-589 ◽  
Author(s):  
Shamsul Qamar ◽  
Farman U. Khan ◽  
Yasir Mehmood ◽  
Andreas Seidel-Morgenstern
Keyword(s):  
Liquid Chromatography ◽  
Analytical Solution ◽  
Moment Analysis ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Two Dimensional Model

Commitment to pro- versus counter-attitudinal behavior and the dynamics of social representations

2002 ◽  
Vol 61 (1) ◽  
pp. 34-44 ◽  
Author(s):  
Eric Tafani ◽  
Lionel Souchet
Keyword(s):  
Higher Education ◽  
Social Representations ◽  
Cognitive Restructuring ◽  
Social Representation ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Social Actions ◽  
The Social ◽  
Two Dimensional Model ◽  
Students Attitudes

This research uses the counter-attitudinal essay paradigm ( Janis & King, 1954 ) to test the effects of social actions on social representations. Thus, students wrote either a pro- or a counter-attitudinal essay on Higher Education. Three forms of counter-attitudinal essays were manipulated countering respectively a) students’ attitudes towards higher education; b) peripheral beliefs or c) central beliefs associated with this representation object. After writing the essay, students expressed their attitudes towards higher education and evaluated different beliefs associated with it. The structural status of these beliefs was also assessed by a “calling into question” test ( Flament, 1994a ). Results show that behavior challenging either an attitude or peripheral beliefs induces a rationalization process, giving rise to minor modifications of the representational field. These modifications are only on the social evaluative dimension of the social representation. On the other hand, when the behavior challenges central beliefs, the same rationalization process induces a cognitive restructuring of the representational field, i.e., a structural change in the representation. These results and their implications for the experimental study of representational dynamics are discussed with regard to the two-dimensional model of social representations ( Moliner, 1994 ) and rationalization theory ( Beauvois & Joule, 1996 ).

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