Search results for " Modelling"

Perfectionism and performance-related psychobiosocial states: The mediating role of competition appraisals.

2022

Using the multi-states (MuSt) theory as a framework, the present study focused on the individual (personality) antecedents of psychobiosocial states. Psychobiosocial states comprise emotional subjective experiences and their correlates (cognitive, motivational, volitional, bodily, motor-behavioural, operational, and communicative), that can be functional for performance (helpful) or dysfunctional (harmful). Specifically, we examined the relationships between two perfectionism dimensions (perfectionistic strivings and concerns) and functional and dysfunctional psychobiosocial states. The hypothesised mediational role of competitive appraisals was also tested. Participants (N = 271, 138 femal…

Automatic surrogate modelling technique selection based on features of optimization problems

2019

A typical scenario when solving industrial single or multiobjective optimization problems is that no explicit formulation of the problem is available. Instead, a dataset containing vectors of decision variables together with their objective function value(s) is given and a surrogate model (or metamodel) is build from the data and used for optimization and decision-making. This data-driven optimization process strongly depends on the ability of the surrogate model to predict the objective value of decision variables not present in the original dataset. Therefore, the choice of surrogate modelling technique is crucial. While many surrogate modelling techniques have been discussed in the liter…

Implementation techniques for the lattice Boltzmann method

2010

Characteristics of participation - A mathematician and a mathematics educator collaborating on a developmental research project

2018

International audience; In this paper, a developmental research project involving offering mathematical modelling (MM) activities to university biology students is presented, and a particular aspect is studied, namely the project as a collaboration between mathematicians and mathematics educators. The aim of the paper is to investigate what characterizes their participation in the project, and how the characteristics of the project and its development might influence this participation. Interview data as well as observation data from the MM sessions are analysed, and findings show that the mathematics educator served as a broker influencing the practice of the mathematician. It is hoped tha…

Family- and classroom-related factors and mother–kindergarten teacher trust in Estonia and Finland

2014

This study examined the role of family-related (mother’s education, depressive symptoms and child’s gender) and kindergarten-related (teacher’s experience, teaching practices and class size) factors in mothers’ and teachers’ mutual trust in Estonia and Finland. Six hundred eighteen (206 Estonian and 412 Finnish) mothers of kindergarten children and their teachers (26 Estonian, 49 Finnish) were participated in the study. Both mothers and teachers filled in the questionnaire on trust; teachers’ teaching practices were observed with early childhood classroom observation measure. The results of multilevel modelling showed that mothers in both countries trusted more in teachers who used child-ce…

Analysing the Nigerian Teacher’s Readiness for Technology Integration

2019

Consensus modelling and molecular dynamics studies for the identification of novel telomerase inhibitors as anti-cancer agents

2018

Telomerase plays an important role in early stages of life-maintaing telomere and chromosomal integrity of frequently dividing cells. It turns dormant in most somatic cells during adulthood. However, in cancer cells, telomerase gets reactivated and works tirelessly to maintain the length of telomeres, leading to immortality of cells. Hence, in this study, we have used a combined ligand-based and structure based drug design approach for the identification of novel telomerase inhibitors as anti-cancer agents. We have generated ligand-based QSAR models and structure-based pharmacophores models, according our recent MYSHAPE approach (1), and validated exhaustively. The validated models were use…

Experimental campaign to assess numerical simulation of tool wear in orthogonal cutting

2007

Transient behaviour of a MSF desalination unit: modelling and experiments

2008

Comparison of a MBR system start-up with and without inoculum: experimental and mathematical model application

2010

The performance of a membrane bioreactor (MBR) system and the extension and mechanisms that lead to the formation of the fouling may differ in relation to the start-up. As a consequence, the MBR start-up may constitute a crucial point that drastically influence the MBR performance in its lifespan. Indeed, the start-up influences the mechanisms of membrane fouling whose effects, in the case of irreversible cake deposition, can be modified only by a chemical membrane washing. In order to gain insights about the effect of the start-up on a MBR system, a MBR pilot plant was build-up and a mathematical model developed. The MBR system was constituted by a hollow fibre membrane module installed in…