Perturbations singulières et moyennisation en dynamique des populations, Conférence during the Scientific Day in tribute to Prof. Tewfik SARI , Mathematics and Computer Science Seminar, University of Sidi Bel Abbes, 17/11/2024.
Long time behaviour in perturbed dynamical systems. Conférence dans Non-standard Days, 8-9 February 2024, Universidade de Évora, Portugal
When can a population spreading across sink habitats persist ? Conférence plénière dans la réunion du projet DZ-TU Ecologie mathématique, modélisation et optimisation des bioprocédés de dépollution - Tlemcen, 03-06/12/2023
Coordination de la session "Quelques résultats du réseau Treasure en écologie mathématique" du Séminaire de lancement du projet IDEFIX, Hammamet, 14-16:11:2023.
Best Operating Conditions for Biogas Production (mini course), CIMPA 2023 Mathematical and Statistical Modeling of Complex Systems,N'Djamena, Chad, 02-13/01/2023.
Un modèle SIS dans le chemostat. Exposé durant le Séminaire automatique et épidémiologie, Villa Clythia, Frejus, 28-30/11:2022.
The multipatch logistic equation, Conférence spécialisée durant le Colloque CARI 2022, Tunis, October 04-07/10/2022.
Commensalism and Syntrophy (mini course), Ecole CIMPA Vert Numérique : biologie mathématique et écologie théorique,Tunis et Hammamet, 24/09/2022 à 03/10/2022.
One century of Differential Equations with Discontinuous Right-Hand Sides (Work in collaboration with Claude Lobry, University of Nice), in Differential geometry, contact geometry, dynamical systems and beyond, Conference in memory of Robert Lutz (1943-2020), Université de Haute Alsace, Mulhouse, 28/06-01/07/2022.
The multi-patch logistic equation, Applied Mathematics Webinar, Jeddah - Riadh - Dammam - Tunis, 1 February 2022.
Links between SIS and logistic patch models, Les méthodes de l'automatique et épidémiologie, CIRM, Marseille, 24-26 janvier 2022.
Le Chemostat: théorie mathématique de la culture de micro-organismes. MINI-CONGRÈS DES MATHÉMATICIENS ALGÉRIENS (MCMA’2021), Msila, 27-28 Octobre 2021.
Mathematical models in biology: The Consumer - Resource relationship (mini course). Dynamique collective, systèmes couplés, et applications en biologie/écologie, 10-15 juillet 2021, Alger.
Introduction to Optimal Control (mini course), Ecole CIMPA Structures symplectiques en mathématique, physique et applications au contrôle, Casablanca, 01-12 juin 2021.
The Chemostat: Mathematical Theory of Microorganism Cultures. The International Webinar on Science, Sustainable Development and Ecosystems in Saudi Arabia 2021 (SSDE21) 6-7 April 2021.
Effects on competition Induced by periodic fluctuations in environment (with M.L. Diagne). 15th African Conference on Research in Computer Science and Applied Mathematics (CARI 2020), 14-17 October 2020, Thiès, Senegal.
Effect of the mortality on a density-dependent model with a predator-prey relationship (with T. Mtar and R. Fekih-Salem). 15th African Conference on Research in Computer Science and Applied Mathematics (CARI 2020), 14-17 October 2020, Thiès, Senegal.
Compétition et coexistence dans le chemostat, Onzième Rencontre d’Analyse Mathématique et Applications RAMA11, Université de Sidi Bel-Abbes, 21-24 novembre 2019.
Sur un modèle proie-prédateur, avec réponse fonctionnelle de type Holling du prédateur. Rencontre du réseau Georges Reeb, Nice 9-11 septembre 2019
Croissance et compétition des espèces microbiennes dans un chemostat. 9ème édition du colloque Tendances dans les Applications Mathématiques en Tunisie Algérie et Maroc (TAMTAM 09), 23-27 February 2019, Tlemcen, Algérie.
Operating diagram of a occulation model in the chemostat (with R. Fekih-Salem), 14th African Conference on Research in Computer Science and Applied Mathematics (CARI 2018), Stellenbosch, South Africa, 14-16 October 2018.
Competition in the chemostat with an external inhibitor. First Conference on BioMathematics in Senegal -ICBS 2018), The year of Mathematical Biology 2018, Thies Polytechnic School, June 29 -July 1 2018.
Mathematical modelling and analysis of microbial ecosystems and bioprocesses (Minisymposium co-organized with N. Abdellatif), 8ème colloque sur les Tendances des Applications en Mathématiques Tunisie Algérie Maroc (TAMTAM 08), Hammamet-Tunisie 10-13 Mai 2017.
A model of flocculation in the chemostat (with R. Fekih-Salem), 13th African Conference on Research in Computer Science and Applied Mathematics (CARI 2016), Hammamet, Tunisie, 11-14 October 2016.
Competition et coexistence dans le chemostat (min-course, Lecture Notes) Ecole CIMPA Mathématiques pour la biologie, 04-10 October 2016, Tunis and 11-14 October 2016 Hammamet.
Tewfik Sari. MacArthur’s consumer-resource model. AMS-EMS-SPM International Meeting, Jun 2015, Porto, Portugal.
Tewfik Sari. Effects on growth and competition induced by periodic fluctuations in environment. Workshop Persistence of population models in temporally fluctuating environments, Feb 2015, Lausanne, Switzerland. pp.29.
Tewfik Sari. Syntrophic relationship between microbial species in a chemostat. The role of mathematics and computer science in ecological theory - Workshop: Microbial ecology and mathematical modelling, Dec 2014, Lausanne, Switzerland. pp.31.
Tewfik Sari. MacArthur’s Consumer-Resource Model. The role of mathematics and computer science in ecological theory - Workshop : Multi-scale models, slow-fast differential equations, averaging in ecology, Nov 2014, Lausanne, Switzerland. pp.32.
Tewfik Sari. Mathematical modeling of genetic regulatory networks using piecewise-linear models. Network Dynamics, Mar 2013, Montpellier, France. pp.20.
T. Hangan, Tewfik Sari. Elastic strips. Colloque de géométries, Sep 2012, Mulhouse, France.
Radhouane Fekih-Salem, Alain Rapaport, Tewfik Sari, Claude Lobry, Jérôme Harmand. Extensions du modèle du chemostat en présence d’attachement. Les biofilms au service des biotechnologies - Bioénergies, Agro-alimentaire, Environnement, Jan 2012, Narbonne, France.
Tewfik Sari. Extension of the Chemostat model with flocculation. 3. Latin American Workshop on Optimization and Control (LAWOC2012), Jan 2012, Valparaiso, Chile.
Radhouane Fekih-Salem, Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Extensions of the chemostat model with flocculation. LAWOC 2012 - III Latin American Workshop on Optimization and Control, Jan 2012, Valparaiso, Chile.
Tewfik Sari. Extension of the Chemostat model with flocculation. 3th Latin American Workshop on Optimization and Control (LAWOC2012), 2012, Valparaiso, Chile.
Tewfik Sari, Nonstandard Perturbation Theory of Differential Equations, International Research Symposium on Nonstandard Analysis and its Applications, ICMS, Edinburgh, 11-17 August 1996.