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Keywords

MODELE MATHEMATIQUE Singular perturbations Bifurcation Flocculation Anaerobic digestion Limit cycle ANAEROBIC DIGESTION Coexistence SPECIES COEXISTENCE Bi-stability DIGESTION ANAEROBIE Canards Operating diagram Chemostat Stability Competition MICROBIOLOGIE Asymptotic stability COMPETITION BIOLOGIQUE CHEMOSTAT
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Number of documents

135

Tewfik Sari

Directeur de Recherche, INRAE

UMR ITAP (INRAE-Institut Agro), Montpellier, France

Diplômes

  • 1983 : Docteur es Sciences Mathématiques, Université de Haute Alsace, Mulhouse
  • 1979 : Docteur de 3ème cycle, Spécialité Mathématiques, Université Louis Pasteur, Starbourg
  • 1977 : DEA de Mathématiues, Spécialité Algèbre, Géométrie et Topologie, Université Louis Pasteur, Starsbourg
  • 1976 : DES de Mathématiques, Spécialité Géométrie, Université d'Oran Es-Sénia, Algérie

Expériences professionnelles

  • 1982 - 1983 : Assistant associé, Université Louis Pasteur, Strasbourg
  • 1983 - 1988 : Maître de Conférences,  Université de Sidi Bel Abbes (Algérie)
  • 1988 - 1991 : Professeur,  Université de Sidi Bel Abbes (Algérie)
  • 1991 - 1992 : Maître de Conférences associé, pendant 1 an, Université de Haute Alsace, Mulhouse
  • 1993 - 1994 : Maître de Conférences, Université de La Rochelle
  • 1994 - 2011 : Professeur, Université de Haute Alsace, Mulhouse                  
  • 2011 - 2018 : Détachement au Cemagref/Irstea comme Directeur de Recherche (DR1)
  • 2019            : Intégration à Irstea comme Directeur de Recherche (DR1)
  • 2020 -          : Directeur de Recherche (DR1) à INRAE

Invitations et délégations

  • 1988            : Visiting Professor, pendant 6 mois, Groningen University, Pays Bas
  • 1992 - 1993 : Maitre de Conférence invité, pendant six mois, Université de Nice
  • 1993            : Professeur invité, pendant 1 mois, Université de Pau
  • 2000 - 2002 : Délégation à l'INRIA, pendant deux ans, dans l'équipe COMORE - Nice - Sophia Antipolis
  • 2008 - 2011 : Délégation chez Inria, pendant deux ans et demi, dans les équipes projets MERE et MODEMIC communes entre Inria et INRA, Montpellier

Directions de laboratoires

Doctorants

  • Thèses soutenues (Université, Date, Codirecteur) : Séfiane Touhami (Nice, 1996, C. Lobry), Arnaud Hirtz (Mulhouse, 2003), Mustpaha Lakrib (Mulhouse, 2004), Tahia Zerizer (Mulhouse, 2005), Karim Yadi (Mulhouse, 2008), Radhouane Fekih-Salem (Montpellier-Tunis, 2013, N. Abdellatif - N. Gmati - A. Rapaport), Mamadou Lamine Diagne (Mulhouse-Saint Louis du Sénégal, 2013, M. Teuw Niane), Yessmine Daoud (Montpellier-Tunis, 2017, N. Abdellatif - N. Gmati - J. Harmand), Bachir Bar (Tlemcen-Algérie, 2019, M. Lakrib), Dellal Mohamed (Sidi Bel Abbes-Algérie, 2019, M. Lakrib)
  • Thèses en cours (Université, Date de début, Codirecteur) : Sarra Nouaoura (Tunis, 2018, N. Abdellatif - R. Fekih Salem), Tahani Mtar (Tunis, 2019, N. Abdellatif - R. Fekih Salem), Bilal Elbetch (Saida - Algérie, 2019, T. Benzekri - D. Massart), Manel Dali Youcef (Montpellier, 2018, A. Rapaport)

Jury de thèses et de HDR

  • Rapporteur des Thèses de (Université, Date, Directeur de la thèse) : Azzouz Awane (Mulhouse, 1992, M. Goze), Saida Bendaas (Mulhouse, 1994, R. Lutz), Hanine Zénati (Metz, 1999, G. Sallet), Ourida Chabour (Metz, 2000, G. Sallet), Samuel Bowong (Metz, 2003, G. Sallet), Ngalla Djitte (Paris Dauphine, 2004, I. Ekeland), Jean-Jules Tewa (Metz, 2007, G. Sallet), Abdouramane Guiro (Metz-Ouagadougou, 2009, A. Iggidr - H. Touré), Mickael Teixeira Alves (Nice, 2013, F. Grognard - L.Mailleret), Walid Oukil (Alger-Bordeaux, 2016, K. Arezki - P. Thieullen), Djaffar Lessy (Nice, 2020, M. Diener)
  • Examinateur des Thèses de (Université, Date, Directeur de la thèse) : Amine Hadjar (Mulhouse, 1992, R. Lutz), Mohamed Bekkar (Mulhouse, 1993, T. Hangan), Luis Gonzaga Albuquerque (Mulhouse, 1994, R. Lutz), Nouredine Mehidi (Pau, 1995, O. Arino), Joel Rouyer (Mulhouse, 2002, T. Hangan), Eduardo Haro-Sandoval (Mulhouse, 2006, M. Basset-G. Gissinger), Gonzalo Robledo (Nice, 2006, J.-L. Gouzé), Ekaterina Zhadanovskaya (AgroParisTech, 2007, R.Arditi), Lyès Nechak (Mulhouse, 2011, E. Aubry - S. Berger), Sihem Kouloughli (Tlemcen, 2013, Z. Sari), Boumédiène Benyahia (Montpellier-Tlemcen, 2012, B. Cherki - J. Harmand), Ibtissem Didi (Tlemcen, 2014, B. Cherki - H. Dib), Amine Guezzen (Tlemcen, 2014, Z. Sari), Ismael Belgacem (Nice, 2015, J.-L. Gouzé), Sonia Hassam (Tlemcen, 2015, B. Cherki - J. Harmand), Zineb Khedim (Tlemcen, 2018, B. Cherki - J. Harmand), Ariane Albers (Montpellier, 2019, A. Hélias)
  • Jury de HDR de (Université, Date, rapporteur ou non): Augustin Fruchard (Strasbourg, 1995), Samir Akesbi (Mulhouse, 2001), Elisabeth Pecou (Dijon, 2005), Boumédiène Ettaoui (Mulhouse, 2008), Abderrahman Iggidr (Nice, 2010, rapporteur), Imme van den Berg (Evora-Portugal, 2012, rapporteur), Francis Mairet (Nice, 2016, rapporteur), Radhouane Fekih Salem (Tunis, 2020)

Journal articles50 documents

  • Tewfik Sari, Boumediene Benyahia. The operating diagram for a two-step anaerobic digestion model.. Nonlinear Dynamics, Springer Verlag, 2021, ⟨10.1007/s11071-021-06722-7⟩. ⟨hal-02557464v2⟩
  • Tahani Mtar, Radhouane Fekih-Salem, Tewfik Sari. Interspecific density-dependent model of predator–prey relationship in the chemostat. International Journal of Biomathematics, World Scientific, 2021, 14 (1), pp.2050086. ⟨10.1142/S1793524520500862⟩. ⟨hal-02445761v2⟩
  • Sarra Nouaoura, Nahla Abdellatif, Radhouane Fekih-Salem, Tewfik Sari. Mathematical analysis of a three-tiered model of anaerobic digestion. SIAM Journal on Applied Mathematics, Society for Industrial and Applied Mathematics, 2021, 81 ((3)), pp.1264-1286. ⟨10.1137/20M1353897⟩. ⟨hal-02540350v3⟩
  • Radhouane Fekih-Salem, Yessmine Daoud, Nahla Abdellatif, Tewfik Sari. A mathematical model of anaerobic digestion with syntrophic relationship, substrate inhibition and distinct removal rates. SIAM Journal on Applied Dynamical Systems, Society for Industrial and Applied Mathematics, 2021, 20 (3), pp.1621--1654. ⟨hal-02085693v2⟩
  • Boumediene Benyahia, Tewfik Sari. Effect of a new variable integration on steady states of a two-step Anaerobic Digestion Model. Mathematical Biosciences and Engineering, AIMS Press, 2020, 17 (5), pp.5504-5533. ⟨10.3934/mbe.2020296⟩. ⟨hal-02657259v2⟩
  • Bachir Bar, Tewfik Sari. The operating diagram for a model of competition in a chemostat with an external lethal inhibitor. Discrete and Continuous Dynamical Systems - Series B, American Institute of Mathematical Sciences, 2020, 25 (6), pp.2093-2120. ⟨10.3934/dcdsb.2019203⟩. ⟨hal-01986280v2⟩
  • Nicolas Bacaër, Claude Lobry, Tewfik Sari. Sur la probabilité d'extinction d'une population dans un environnement périodique lent. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2020, 32 - 2019 - 2020, pp.81-95. ⟨hal-02388815v4⟩
  • Javier Murillo, Serge Guillaume, Tewfik Sari, Pilar Bulacio. An algorithm for computing the generalized interaction index for k-maxitive fuzzy measures. Journal of Intelligent and Fuzzy Systems, IOS Press, 2020, 38 (4), pp.4127-4137. ⟨10.3233/JIFS-190403⟩. ⟨hal-02928685⟩
  • Nabil Beroual, Tewfik Sari. A predator-prey system with Holling-type functional response. Proceedings of the American Mathematical Society, American Mathematical Society, 2020, ⟨10.1090/proc/15166⟩. ⟨hal-02002894v2⟩
  • Sarra Nouaoura, Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari. Mathematical analysis of a three-tiered food-web in the chemostat. Discrete and Continuous Dynamical Systems - Series B, American Institute of Mathematical Sciences, 2020, ⟨10.3934/dcdsb.2020369⟩. ⟨hal-02878246v2⟩
  • Radhouane Fekih-Salem, Tewfik Sari. Operating diagram of a flocculation model in the chemostat. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, In press, CARI 2018, Volume 31 - 2019 - CARI 2018, pp.45-58. ⟨hal-02160798v3⟩
  • Manel Dali Youcef, Alain Rapaport, Tewfik Sari. Study of performance criteria of serial configuration of two chemostats. Mathematical Biosciences and Engineering, AIMS Press, 2020, 17 (6), pp.6278-6309. ⟨10.3934/mbe.2020332⟩. ⟨hal-02935942⟩
  • Radhouane Fekih-Salem, Tewfik Sari. Properties of the chemostat model with aggregated biomass and distinct dilution rates. SIAM Journal on Applied Dynamical Systems, Society for Industrial and Applied Mathematics, 2019, 18 (1), pp.481-509. ⟨10.1137/18M1171801⟩. ⟨hal-01722448v2⟩
  • Vazken Andréassian, Tewfik Sari. Technical Note: On the puzzling similarity of two water balance formulas - Turc-Mezentsev vs. Tixeront-Fu. Hydrology and Earth System Sciences, European Geosciences Union, 2019, 23 (5), pp.2339-2350. ⟨10.5194/hess-23-2339-2019⟩. ⟨hal-02609422⟩
  • Yessmine Daoud, Nahla Abdellatif, Tewfik Sari, Jérome Harmand. Steady state analysis of a syntrophic model: the effect of a new input substrate concentration. Mathematical Modelling of Natural Phenomena, EDP Sciences, 2018, 13 (3), pp.21. ⟨10.1051/mmnp/2018037⟩. ⟨hal-02608022⟩
  • Z. Khedim, Boumédiène Benyahia, Brahim Cherki, Tewfik Sari, Jérôme Harmand. Effect of control parameters on biogas production during the anaerobic digestion of protein-rich substrates. Applied Mathematical Modelling, Elsevier, 2018, 61, pp.351-376. ⟨10.1016/j.apm.2018.04.020⟩. ⟨hal-02608027⟩
  • Roger Arditi, Claude Lobry, Tewfik Sari. Asymmetric dispersal in the multi-patch logistic equation. Theoretical Population Biology, Elsevier, 2018, 120, pp.11 - 15. ⟨10.1016/j.tpb.2017.12.006⟩. ⟨hal-01688305⟩
  • Mohamed Dellal, Mustapha Lakrib, Tewfik Sari. A MODEL OF TWO COMPETITORS IN A CHEMOSTAT WITH AN EXTERNAL INHIBITOR. Mathematical Biosciences, Elsevier, 2018, 302, pp.27-45. ⟨10.1016/j.mbs.2018.05.004⟩. ⟨hal-01573559v2⟩
  • Nassim Ait-Mouheb, Akiça Bahri, Bechir Ben Thayer, Boumediene Benyahia, Guilhem Bourrie, et al.. The reuse of reclaimed water for irrigation around the Mediterranean Rim: a step towards a more virtuous cycle?. Regional Environmental Change, Springer Verlag, 2018, 18 (3), pp.693 - 705. ⟨10.1007/s10113-018-1292-z⟩. ⟨hal-01767840⟩
  • Bruno Tisseyre, C. Leroux, L. Pichon, V. Geraudie, Tewfik Sari. How to define the optimal grid size to map high resolution spatial data ?. Precision Agriculture, Springer Verlag, 2018, 19 (5), pp.957-971. ⟨10.1007/s11119-018-9566-5⟩. ⟨hal-02607457⟩
  • Radhouane Fekih-Salem, Claude Lobry, Tewfik Sari. A density-dependent model of competition for one resource in the chemostat. Mathematical Biosciences, Elsevier, In press, 286, pp.104-122. ⟨10.1016/j.mbs.2017.02.007⟩. ⟨hal-01359078⟩
  • Bilel Elbetch, Tounsia Benzekri, Daniel Massart, Tewfik Sari. THE MULTI-PATCH LOGISTIC EQUATION. Discrete and Continuous Dynamical Systems - Series B, American Institute of Mathematical Sciences, 2017, 22 (11), ⟨10.3934/dcdsb.2021025⟩. ⟨hal-02906124v2⟩
  • Tewfik Sari, Matthew J. Wade. Generalised approach to modelling a three-tiered microbial food-web. Mathematical Biosciences, Elsevier, 2017, 291, pp.21-37. ⟨10.1016/j.mbs.2017.07.005⟩. ⟨hal-01185634v3⟩
  • T. Sari, J. Harmand. A model of a syntrophic relationship between two microbial species in a chemostat including maintenance. Mathematical Biosciences, Elsevier, 2016, 275, pp.1-9. ⟨10.1016/j.mbs.2016.02.008⟩. ⟨hal-01541383⟩
  • Matthew J. Wade, Jérôme Harmand, Boumediene Benyahia, Théodore Bouchez, Stephane Chaillou, et al.. Perspectives in Mathematical Modelling for Microbial Ecology. Ecological Modelling, Elsevier, 2016, 321 (64-74), pp.64-74. ⟨10.1016/j.ecolmodel.2015.11.002⟩. ⟨hal-01227423⟩
  • Nahla Abdellatif, Radhouane Fekih-Salem, T Sari. Competition for a single ressource and coexistence of several species in the chemostat. Mathematical Biosciences and Engineering, AIMS Press, 2016, 13 (4), pp.631-652. ⟨10.3934/mbe.2016012⟩. ⟨hal-01137578v2⟩
  • R. Fekih-Salem, Alain Rapaport, T. Sari. Emergence of coexistence and limit cycles in the chemostat model with flocculation for a general class of functional responses. Applied Mathematical Modelling, Elsevier, 2016, 40 (17-18), pp.7656-7677. ⟨10.1016/j.apm.2016.03.028⟩. ⟨hal-01294253⟩
  • Claude Lobry, Tewfik Sari. Migrations in the Rosenzweig-MacArthur model and the "atto-fox" problem. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2015, 20, pp.95-125. ⟨hal-01235211v2⟩
  • Roger Arditi, Claude Lobry, Tewfik Sari. Is dispersal always beneficial to carrying capacity? New insights from the multi-patch logistic equation. Theoretical Population Biology, Elsevier, 2015, 106, pp.45-59. ⟨10.1016/j.tpb.2015.10.001⟩. ⟨hal-01235210⟩
  • Amel Ghouali, Tewfik Sari, Jérome Harmand. Maximizing biogas production from the anaerobic digestion. Journal of Process Control, Elsevier, 2015, 36, pp.79-88. ⟨10.1016/j.jprocont.2015.09.007⟩. ⟨hal-01205935⟩
  • B. Haegeman, T. Sari, R.S. Etienne. Predicting coexistence of plants subject to a tolerance-competition trade-off. Journal of Mathematical Biology, Springer Verlag (Germany), 2014, 68 (7), pp.1815-1847. ⟨10.1007/s00285-013-0692-4⟩. ⟨hal-00947795⟩
  • Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari, Harmand Jérôme. Analyse mathématique d'un modèle de digestion anaérobie à trois étapes. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2014, 17, pp.53-71. ⟨hal-01300059⟩
  • Radhouane Fekih-Salem, Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Extension of the chemostat model with flocculation. Journal of Mathematical Analysis and Applications, Elsevier, 2013, 397 (1), pp.292-306. ⟨10.1016/j.jmaa.2012.07.055⟩. ⟨hal-00777539⟩
  • Boumediene Benyahia, Tewfik Sari, Brahim Cherki, Jérôme Harmand. Anaerobic Membrane BioReactor modeling in the presence of Soluble Microbial Products (SMP) - the Anaerobic Model AM2b. Chemical Engineering Journal, Elsevier, 2013, 228, pp.1011-1022. ⟨10.1016/j.cej.2013.05.073⟩. ⟨hal-00859541⟩
  • T. Sari, M. El Hajji, Jérôme Harmand. The mathematical analysis of a syntrophic relationship between two microbial species in a chemostat. Mathematical Biosciences and Engineering, AIMS Press, 2012, 9 (3), p. 627 - p. 645. ⟨10.3934/mbe.2012.9.627⟩. ⟨hal-00765311⟩
  • Brahim Benyahia, T. Sari, B. Cherki, Jérôme Harmand. Bifurcation and stability analysis of a two step model for monitoring anaerobic digestion processes. Journal of Process Control, Elsevier, 2012, 22 (6), p. 1008 - p. 1019. ⟨10.1016/j.jprocont.2012.04.012⟩. ⟨hal-00777051⟩
  • J. Rouyer, Tewfik Sari. As many antipodes as vertices on convex polyhedra. Advances in Geometry, De Gruyter, 2012, 12 (1), pp.43 -61. ⟨10.1515/advgeom.2011.030⟩. ⟨hal-00777554⟩
  • Tewfik Sari. Competitive Exclusion for Chemostat Equations with Variable Yields. Acta Applicandae Mathematicae, Springer Verlag, 2012, 123 (1), p. 201 - p. 219. ⟨10.1007/s10440-012-9761-8⟩. ⟨hal-00780065⟩
  • Mamadou Lamine Diagne, Papa Ibrahima Ndiaye, Mary Teuw Niane, Tewfik Sari. Comportement asymptotique d’un modèle à commutation de la prolifération du Typha. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2012, 15, pp.101-122. ⟨hal-01299493⟩
  • Tewfik Sari, Frédéric Mazenc. Global dynamics of the chemostat with different removal rates and variable yields. Mathematical Biosciences and Engineering, AIMS Press, 2011, 8 (3), pp.827-840. ⟨10.3934/mbe.2011.8.827⟩. ⟨hal-00418676v2⟩
  • Radhouane Fekih-Salem, Tewfik Sari, Nahla Abdellatif. Sur un modèle de compétition et de coexistence dans le chémostat. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2011, 14, pp.15-30. ⟨hal-00777548v2⟩
  • Mustapha Lakrib, Tewfik Sari. Time averaging for ordinary differential equations and retarded functional differential equations. Electronic Journal of Differential Equations, Texas State University, Department of Mathematics, 2010, 2010 (40), pp.1-24. ⟨hal-01189562⟩
  • Tewfik Sari. Comments on "Limit cycles in the chemostat with constant yields" Mathematical and Computer Modelling 45 (2007) 927-932. Mathematical and Computer Modelling, Elsevier, 2010, 52 (9-10), http://dx.doi.org/10.1016/j.mcm.2010.07.010. ⟨10.1016/j.mcm.2010.07.010⟩. ⟨hal-00505820⟩
  • Tewfik Sari. A Lyapunov function for the chemostat with variable yields. Comptes rendus de l'Académie des sciences. Série I, Mathématique, Elsevier, 2010, 348 (13-14), pp.747-751. ⟨10.1016/j.crma.2010.06.008⟩. ⟨inria-00505288⟩
  • Théodor Hangan, Cornel Murea, Tewfik Sari. Poleni curves on surfaces of constant curvature. Rendiconti del Seminario Matematico, Università degli studi di Torino / Politecnico di Torino, 2009, 67, pp.59-76. ⟨hal-00204551⟩
  • Hafida Boudjellaba, Tewfik Sari. Dynamic transcritical bifurcations in a class of slow-fast predator-prey models. Journal of Differential Equations, Elsevier, 2009, 46 (6), pp.2205-2225. ⟨10.1016/j.jde.2009.01.001⟩. ⟨hal-00858536⟩
  • Mary Teuw Niane, Gauthier Sallet, Tewik Sari, Hamidou Touré. Avant Propos. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2008, 9, pp.3-3. ⟨hal-01277838⟩
  • Claude Lobry, Tewfik Sari. The peaking phenomenon and singular perturbations. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées, INRIA, 2008, 9 (Spécial issue of Claude Lobry), pp.487-516. ⟨hal-01019722v2⟩
  • Claude Lobry, Tewfik Sari. Nonstandard analysis and representation of reality. International Journal of Control, Taylor & Francis, 2008, 81 (3), pp.519-536. ⟨10.1080/00207170701601728⟩. ⟨hal-00857828⟩
  • Hidde de Jong, Jean-Luc Gouzé, Céline Hernandez, Michel Page, Tewfik Sari, et al.. Qualitative simulation of genetic regulatory networks using piecewise-linear models.. Bulletin of Mathematical Biology, Springer Verlag, 2004, 66 (2), pp.301-40. ⟨10.1016/j.bulm.2003.08.010⟩. ⟨hal-00173849⟩

Conference papers53 documents

  • Mamadou Lamine Diagne, T. Sari. Effects on competition Induced by periodic fluctuations in environment. African Conference on Research in Computer Science and Applied Mathematics (CARI 2020), Oct 2020, THIES, Sénégal. ⟨hal-02962087⟩
  • Mamadou Lamine Diagne, T. Sari. Effects on competition induced by periodic fluctuations in environment. Proceedings of CARI 2020, Sep 2020, Thies (Senegal), France. ⟨hal-02928461⟩
  • Tahani Mtar, Radhouane Fekih-Salem, Tewfik Sari. Effect of the mortality on a density-dependent model with a predator-prey relationship. CARI 2020 - 15th African Conference on Research in Computer Science and Applied Mathematics, Oct 2020, Thiès, Senegal. ⟨hal-02912854v2⟩
  • Tewfik Sari. Modélisation mathématique de la compétition des espèces microbiennes dans le chemostat. Onzième Rencontre d’Analyse Mathématique et Applications RAMA11, Nov 2019, Sidi Bel Abbes, Algérie. ⟨hal-02930214⟩
  • Tewfik Sari. 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, Feb 2019, Tlemcen, Algérie. ⟨hal-02930235⟩
  • Sarra Nouaoura, Nahla Abdellatif, Radhouane Fekih-Salem, Tewfik Sari. Mathematical analysis of a three-tiered microbial food-web model with new input substrates. 9 ème édition du colloque Tendances dans les Applications Mathématiques en Tunisie Algérie et Maroc, Feb 2019, Tlemcen, Algeria. ⟨hal-02912850⟩
  • Tewfik Sari. Competition in the chemostat with an external inhibitor. ICBS2018 : International Conference on Biomathematics in Senegal, Jun 2018, Thiès, Senegal. ⟨hal-02930309⟩
  • Radhouane Fekih-Salem, Tewfik Sari. Operating diagram of a flocculation model in the chemostat,. 14. African Conference on Research in Computer Science and Applied Mathematics, CARI 2018, Oct 2018, Stellenbosch, South Africa. pp.64-72. ⟨hal-02934704⟩
  • R. Fekih-Salem, C. Lobry, T. Sari. How intra- and interspecific competitions affect the coexistence in the chemostat. 8ème colloque - Tendances dans les Applications Mathématiques en Tunisie, Algérie et Maroc, May 2017, Hammamet, Tunisia. pp.55-60. ⟨hal-01691578⟩
  • T. Sari, R. Fekih-Salem. Analysis of a model of flocculation in the chemostat. 8ème colloque - Tendances dans les Applications Mathématiques en Tunisie, Algérie et Maroc, May 2017, Hammamet, Tunisia. pp.75-80. ⟨hal-01766009⟩
  • N. Abdellatif, Y. Daoud, R. Fekih-Salem, T. Sari, C. Lobry, et al.. Mathematical Modelling and analysis of microbial ecosystems and bioprocesses: research done within the network Treasure. 8ème colloque - Tendances des Applications en Mathématiques Tunisie, Algérie et Maroc, May 2017, Hammamet, Tunisia. pp.51-53. ⟨hal-01691565⟩
  • Yessmine Daoud, N Abdellatif, T Sari, J Harmand. The effect of a new input concentration substrate on a syntrophic relationship of two species in a chemostat. TAMTAM2017 - Tendances des Applications Mathématiques en Tunisie, Algérie, Maroc, May 2017, Hammamet, Tunisia. pp.69-74. ⟨hal-01581516⟩
  • Fabrice Béline, Olivier Bernard, P. Lessard, Cyril Marcilhac, Tewfik Sari, et al.. Dynamic bio-kinetic modelling of microalgae/bacteria cultivation and interaction. 1. IWA Conference on Algal Technologies for Wastewater Treatment and Resource Recovery, International Water Association (IWA). INT., Mar 2017, Delft, Netherlands. ⟨hal-02734206⟩
  • Y Daoud, Tewfik Sari, Nahla Abdellatif, J Harmand. STEADY-STATE ANALYSIS OF A SYNTROPHIC ASSOCIATION OF TWO SPECIES IN A CHEMOSTAT: THE EFFECT OF A NEW INPUT CONCENTRATION SUBSTRATE. ICCDS, Oct 2016, Agadir, Morocco. ⟨hal-01581510⟩
  • 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. ⟨hal-02602057⟩
  • Tewfik Sari. MacArthur’s consumer-resource model. AMS-EMS-SPM International Meeting, Jun 2015, Porto, Portugal. ⟨hal-02602271⟩
  • R. Fekih-Salem, T. Sari. On the global stability of the coexistence equilibrium of a density dependent model of competition for one resource. 12th African Conference on Research in Computer Science and Applied Mathematics, Oct 2014, Saint-Louis, France. pp.19-30. ⟨hal-01128594⟩
  • 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. ⟨hal-02600758⟩
  • 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. ⟨hal-02600759⟩
  • Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari, Jérôme Harmand. Qualitative properties of 3-step model of anaerobic digestion including hydrolysis of particulate matter. International Joint Conference CB-WR-MED Conference/ 2nd AOP' Tunisia Conference for Sustainable Water Management. Tunis, 2013, Tunis, Tunisia. pp.93--94. ⟨hal-00859567⟩
  • R. Fekih-Salem, N. Abdellatif, T. Sari, Jérôme Harmand. Qualitative properties of a 3-steps model of anaerobic digestion including hydrolysis of particulate matter. CB-WR-MED Conference/2nd AOP’Tunisia Conference for Sustainable Water Management, Apr 2013, Tunis, Tunisia. p. 93 - p. 94. ⟨hal-00828059⟩
  • B. de Saedeleer, Tewfik Sari. Dimension reduction of some paleoclimate models like Saltzman and Maasch 1990. Apr 2013, Vienne, Austria. ⟨hal-02598449⟩
  • Tewfik Sari. Mathematical modeling of genetic regulatory networks using piecewise-linear models. Network Dynamics, Mar 2013, Montpellier, France. pp.20. ⟨hal-02598638⟩
  • Amel Ghouali, Tewfik Sari, Claude Lobry, A. Moussaoui, Jérôme Harmand. Analyse et contrôle optimal d'un bioréacteur de dépollution des eaux usées. 11. African Conference on Research in Computer Science and Applied Mathematics. CARI'12, Oct 2012, Alger, Algérie. 8 p. ⟨hal-01004349⟩
  • Tewfik Sari. Extension of the Chemostat model with flocculation. 3. Latin American Workshop on Optimization and Control (LAWOC2012), Jan 2012, Valparaiso, Chile. ⟨hal-01000102⟩
  • 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. ⟨hal-02750011⟩
  • Amel Ghouali, Tewfik Sari, Jérôme Harmand, Alain Rapaport, Ali Moussaoui, et al.. Analyse et contrôle optimal d'un bioréacteur de dépollution des eaux usées. 11ème Colloque Africain pour la Recherche en Informatique et en Mathématiques Appliquées (CARI 2012), Oct 2012, Alger, Algeria. pp.404-411. ⟨hal-00859573⟩
  • Tewfik Sari. Extension of the Chemostat model with flocculation. 3th Latin American Workshop on Optimization and Control (LAWOC2012), 2012, Valparaiso, Chile. ⟨hal-00859565⟩
  • Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari, Jérôme Harmand. Analyse mathématique d'un modèle de digestion anaérobie à trois étapes. 11. African Conference on Research in Computer Science and Applied Mathematics. CARI'12, Oct 2012, Alger, Algérie. pp.7. ⟨hal-01190355⟩
  • R. Fekih-Salem, N. Abdellatif, T. Sari, Jérôme Harmand. On a three step model of anaerobic digestion including the hydrolysis of particulate matter. MATHMOD 2012 - 7th Vienna International Conference on Mathematical Modelling, Jan 2012, Vienne, Austria. 6 p. ⟨hal-00777559⟩
  • 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. ⟨hal-02597553⟩
  • Boumediene Benyahia, Brahim Cherki, Jérôme Harmand, Tewfik Sari. Quelques résultats sur l’observation du modèle AM2b. 11. African Conference on Research in Computer Science and Applied Mathematics. CARI'12, Oct 2012, Algiers, Algérie. ⟨hal-02745176⟩
  • M.L. Diagne, Tewfik Sari. Moyennisation du modèle dynamique de la prolifération du Typha. Oct 2012, Alger, Algérie. ⟨hal-02597550⟩
  • Amel Ghouali, Tewfik Sari, Claude Lobry, Ali Moussaoui, J. Harmand. Analyse et contrôle optimal d’un bioréacteur de dépollution des eaux usées. 11ème Colloque Africain sur la Recherche en Informatique en Mathématiques Appliquées (CARI'2012), Oct 2012, Alger, Algérie. ⟨hal-02597552⟩
  • T. Hangan, Tewfik Sari. Elastic strips. Colloque de géométries, Sep 2012, Mulhouse, France. ⟨hal-02598143⟩
  • Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari, J. Harmand. Analyse mathématique d’un modèle de digestion anaérobie à trois étapes. 2012. ⟨hal-02597551⟩
  • Boumédiène Benyahia, Brahim Cherki, J. Harmand, Tewfik Sari. Quelques résultats sur l’observation du modèle AM2b. 2012. ⟨hal-02597549⟩
  • Miled El Hajji, Tewfik Sari, Jerome Harmand. Analyse d'une relation syntrophique : cas d'un chemostat. 5. Colloque sur les Tendances dans les Applications Mathématiques en Tunisie, Algérie, Maroc, Apr 2011, Sousse, Tunisie. pp.451-456. ⟨hal-01001159⟩
  • Radhouane Fekih-Salem, Tewfik Sari, Alain Rapaport. La floculation et la coexistence dans le chemostat. 5ème Colloque sur les Tendances dans les Applications Mathématiques en Tunisie, Algérie, Maroc (TAMTAM), Apr 2011, Sousse, Tunisie. ⟨hal-02747352⟩
  • Boumediene Benyahia, Tewfik Sari, Brahim Cherki, Jérôme Harmand. Modélisation mathématique d'un bioréacteur membranaire anaérobie. 5ème Colloque sur les Tendances dans les Applications Mathématiques en Tunisie, Algérie, Maroc, 2011, Sousse, Tunisie. pp.465-470. ⟨hal-00858574⟩
  • Tewfik Sari, Nahla Abdellatif, Boumediene Benyahia, Mamadou Lamine Diagne, Miled El Hajji, et al.. Modélisation mathématique en biologie : compétition, coexistence et croissance. 5ème Colloque sur les Tendances dans les Applications Mathématiques en Tunisie, Algérie, Maroc, 2011, Sousse, Tunisie. pp.19-25. ⟨hal-00858577⟩
  • Boumediene Benyahia, Tewfik Sari, Jérôme Harmand, Brahim Cherki. Modeling of the Soluble Microbial Products (SMP) in Anaerobic Membrane BioReactors (AMBR) : Equilibria and stability of the AM2b model ?. 18th IFAC World Congress, International Federation of Automatic Control (IFAC). Laxenburg, AUT., Aug 2011, Milan, Italy. pp.3789-3794, ⟨10.3182/20110828-6-IT-1002.01195⟩. ⟨hal-00858578⟩
  • Radhouane Fekih-Salem, Nahla Abdellatif, Tewfik Sari, Jerome Harmand. Sur un modèle de digestion anaréobie avec dégradation enzymatique du substart sous forme solide. 5. Colloque sur les Tendances dans les Applications Mathématiques en Tunisie, Algérie, Maroc, Apr 2011, Sousse, France. pp.457-463. ⟨hal-00999844⟩
  • Boumédiène Benyahia, Tewfik Sari, Brahim Cherki, Jérôme Harmand. Equilibria of an anaerobic wastewater treatment process and their stability. 11th International Symposium on Computer Applications in Biotechnology (CAB 2010), Jul 2010, Leuven, Belgium. pp.371-376, ⟨10.3182/20100707-3-BE-2012.0049⟩. ⟨inria-00505262⟩
  • Mamadou Lamine Diagne, Papa Ibrahima N'Diaye, Tewfik Sari, Mary Teuw Niane. Un modèle mathématique de la prolifération du Typha. CARI 2010, Oct 2010, Yamoussoukro, Côte d’Ivoire. pp.277-284. ⟨inria-00505247⟩
  • Boumédiène Benyahia, Tewfik Sari, Brahim Cherki, Jérôme Harmand. Sur le modèle AM2 de digestion anaérobie. CARI 2010, Oct 2010, Yamoussoukro, Côte d’Ivoire. 8 p. ⟨inria-00505230⟩
  • Boumediene Benyahia, Tewfik Sari, Brahim Cherki, Jerome Harmand. Equilibria of an anareobic wastewater treatment process and their stability. 11. CAB 2010 : IFAC International Symposium on Computer Applications in Biotechnology, Jul 2010, Leuven, Belgium. pp.371-376. ⟨hal-01001163⟩
  • Ahlem Saddoud, Tewfik Sari, Alain Rapaport, Robert Lortie, Jérôme Harmand, et al.. A mathematical study of an enzymatic reaction in non homogeneous reactors with substrate and product inhibition: application to cellobiose hydrolysis in a bioreactor with a dead-zone. 11th International Symposium on Computer Applications in Biotechnology (CAB 2010), Jul 2010, Leuven, Belgium. pp.209-214, ⟨10.3182/20100707-3-BE-2012.0043⟩. ⟨inria-00505274⟩
  • Radhouane Fekih-Salem, Tewfik Sari, Nahla Abdellatif. Sur un modèle de compétition et de coexistence dans le chemostat. CARI 2010, Oct 2010, Yamoussoukro, Côte d’Ivoire. ⟨inria-00505254⟩
  • Claude Lobry, Alain Rapaport, Tewfik Sari. Stability loss delay in the chemostat with a slowly varying washout rate. MATHMOD 2009: 6th Vienna International Conference on Mathematical Modelling, Feb 2009, Vienna, Austria. pp.1582-1586. ⟨hal-01019296⟩
  • B. Brighi, A. Fruchard, T. Sari. The Blasius equation. Colloque à la mémoire d’Emmanuel Isambert, Université de Paris 7, Dec 2007, Paris, France. p. 105 - p. 123. ⟨hal-00765316⟩
  • Claude Lobry, Tewfik Sari. The peaking phenomenon and singular perturbations. 2007 International Conference in Honor of Claude Lobry, Sep 2007, Saint-Louis, Senegal. ⟨hal-00999965⟩
  • Claude Lobry, Tewfik Sari. La modélisation de la persistance en écologie. Colloque à la mémoire d'Emmanuel Isambert, Université de Paris 7, Dec 2007, Paris, France. pp.163 - 184. ⟨hal-00824769⟩

Poster communications2 documents

  • Manel Dali Youcef, Alain Rapaport, Tewfik Sari. Diagramme opératoire et performances de deux chémostats en série. Ecole CIMPA - Modélisation, Analyse Mathématique et Calcul Scientifique dans la Gestion des Déchets Ménagers, Jul 2019, Kénitra, Maroc. 2019. ⟨hal-02789691⟩
  • Manel Dali Youcef, Alain Rapaport, Tewfik Sari. Diagramme opératoire et performances de deux chémostats en série. TAMTAM 2019 : Tendances dans les Applications Mathématiques en Tunisie Algérie Maroc, Feb 2019, Tlemcen, Algérie. 2019. ⟨hal-02786798⟩

Books5 documents

  • Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Optimisation des bioprocédés: pratique du principe du maximum de Pontryagin. Wiley-ISTE, 3, 240 p., 2019, Génie des procédés / Chémostat et Bioprocédés, 9781784055707. ⟨hal-02105919⟩
  • Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Optimal Control in Bioprocesses: Pontryagin's Maximum Principle in Practice. Wiley, 3, 244 p., 2019, Chemical Engineering Series - Chemostat and Bioprocesses, 978-1-786-30045-4. ⟨hal-02045808⟩
  • Jérome Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. The Chemostat: Mathematical Theory of Microorganism Cultures. Wiley. John Wiley and Sons, Ltd, 1, 240 p., 2017, Chemical Engineering series / Chemostat and bioprocesses, 978-1-78630-043-0. ⟨hal-01539446⟩
  • Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Le Chemostat. Théorie mathématique de la culture continue de micro-organismes. ISTE, pp.240, 2017, 978-1-78405-218-8. ⟨hal-02607051⟩
  • Tewfik Sari. Contrôle non linéaire et Applications [Nonlinear Control and Applications] , Les Cours du CIMPA. Hermann, Editeur des Sciences et des arts, pp.266, 2005, Collection Travaux en Cours No. 64. ⟨hal-00113629⟩

Book sections1 document

  • Claude Lobry, Tewfik Sari, Karim Yadi. Coexistence of three predators competing for a single biotic resource. Jean Lévine and Philippe Müllhaupt. Advances in the Theory of Control, Signals and Systems with Physical Modeling - Part III, Springer, pp.309-321, 2011, Lecture Notes in Control and Information Sciences - 407, 978-3-642-16134-6. ⟨10.1007/978-3-642-16135-3_25⟩. ⟨hal-00486459⟩

Directions of work or proceedings1 document

  • Augustin Fruchard, Veronique Gautheron, Tewfik Sari. Philosophie, méthodologie et applications de l'analyse non standard. Colloque à la mémoire de E. Isambert, Dec 2007, NA, France. Universite Paris 13, 2012, Publications de l'Université de Paris 13. ⟨hal-01190319v2⟩

Other publications3 documents

  • Manel Dali Youcef, Alain Rapaport, Tewfik Sari. Diagramme opératoire et performances de deux chémostats en série. Séminaire TREASURE, Hammamet, Tunisie, 2018. ⟨hal-02784940⟩
  • Augustin Fruchard, Bernard Brighi, Tewfik Sari. The Blasius equation. 2010. ⟨hal-00493860⟩
  • Claude Lobry, Tewfik Sari. Analyse Non Standard et Représentation du Réel: Deux exemples en Automatique. 2007. ⟨inria-00163365⟩

Preprints, Working Papers, ...15 documents

  • Bilel Elbetch, Tounsia Benzekri, Daniel Massart, Tewfik Sari. The multi-patch logistic equation with asymmetric migration. 2021. ⟨hal-03179136v3⟩
  • Manel Dali Youcef, Alain Rapaport, Tewfik Sari. Study of performance criteria of serial configuration of two chemostats. 2020. ⟨hal-02565939v3⟩
  • Mohammed Hanaki, Jérôme Harmand, Zoubida Mghazli, Tewfik Sari, Alain Rapaport, et al.. Mathematical study of a two-stage anaerobic model when the hydrolysis is the limiting step. 2020. ⟨hal-02531141v2⟩
  • Radhouane Fekih-Salem, Alain Rapaport, Tewfik Sari. Emergence of coexistence and limit cycles in the chemostat model with flocculation for a general class of functional responses. 2015. ⟨hal-01121201⟩
  • Tewfik Sari, Jérôme Harmand. A model of a syntrophic relationship between two microbial species in a chemostat including maintenance. 2015. ⟨hal-01026149v2⟩
  • Roger Arditi, Claude Lobry, Tewfik Sari. Is dispersal always beneficial to carrying capacity? New insights from the multi-patch logistic equation. 2015. ⟨hal-01153368v2⟩
  • Radhouane Fekih-Salem, Jérôme Harmand, Claude Lobry, Alain Rapaport, Tewfik Sari. Extensions of the chemostat model with flocculation. 2011. ⟨hal-00604633v3⟩
  • Tewfik Sari, Miled El Hajji, Jérôme Harmand. Analysis of a mathematical model of syntrophic bacteria in a chemostat. 2010. ⟨hal-00487189v2⟩
  • Tewfik Sari. Global dynamics of the chemostat with variable yields. 2010. ⟨hal-00459923⟩
  • Claude Lobry, Tewfik Sari. La modélisation de la persistance en écologie. 2009. ⟨hal-00408165⟩
  • Joël Rouyer, Tewfik Sari. As many antipodes as vertices on some convex polyhedra. 2009. ⟨hal-00465063⟩
  • Hafida Boudjellaba, Tewfik Sari. Dynamic saddle-node bifurcation in a class of slow and fast predator-prey models. 2008. ⟨hal-00270315⟩
  • Bernard Brighi, Augustin Fruchard, Tewfik Sari. On the Blasius Problem. 2008. ⟨hal-00114834v2⟩
  • Hafida Boudjellaba, Tewfik Sari. Stability loss delay in a class of slow and fast ecological models. 2007. ⟨hal-00163654⟩
  • Mustapha Lakrib, Tewfik Sari. Averaging Theorems for Ordinary Differential Equations and Retarded Functional Differential Equations. 2006. ⟨hal-00115539⟩

Reports4 documents

  • Tewfik Sari. Averaging in Hamiltonian systems with slowly varying parameters. RR-4374, INRIA. 2002. ⟨inria-00072214⟩
  • Hidde De Jong, Jean-Luc Gouzé, Céline Hernandez, Tewfik Sari, Michel Page, et al.. Qualitative Simulation of Genetic Regulatory Networks Using Piecewise-Linear Models. [Research Report] RR-4407, INRIA. 2002. ⟨inria-00072181⟩
  • Jean-Luc Gouzé, Tewfik Sari. A Class of Piecewise Linear Differential Equations Arising in Biological Models. RR-4207, INRIA. 2001. ⟨inria-00072415⟩
  • Claude Lobry, Tewfik Sari. The peaking Phenomenon and Singular Perturbations : An Extension of Tikhonov's Theorem. RR-4051, INRIA. 2000. ⟨inria-00072586⟩

Lectures1 document

  • Bertrand Cloez, Tanguy Daufresne, Thomas Koffel, Jérôme Harmand, Claude Lobry, et al.. Ecole chercheurs Modèles ressources-consommateurs. École thématique. Modèles Ressources-Consommateurs, Montpellier, France. 2015. ⟨cel-01206385v2⟩