RD

Ramsès Djidjou-Demasse

59
Documents

Présentation

Directeur de Recherche à l'IRD, affecté au laboratoire MIVEGEC à Montpellier.

Mes travaux portent sur l'analyse Mathématique et la Modélisation de systèmes complexes (ou non), avec un accent particulier sur les Systèmes Dynamiques. Les applications résultant de ces travaux concernent (mais pas que) l'épidémiologie, l'évolution des maladies infectieuses et l'écologie.

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Publications

Time-Dependent Positively Invariant Sets on Cauchy Problems: Applications in Population Dynamics

Moustapha Dieye , Ramsès Djidjou-Demasse , Ousmane Seydi

Acta Applicandae Mathematicae, 2026, 201 (1), pp.15. ⟨10.1007/s10440-026-00775-9⟩

Article dans une revue hal-05513329v1
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Optimizing insecticide deployment strategies to delay quantitative resistance in mosquito populations

Sylvère Kezeta-Bondja , Charles S Wondji , Ramsès Djidjou-Demasse

Journal of Mathematical Biology, 2026, 92 (37), ⟨10.1007/s00285-026-02343-z⟩

Article dans une revue hal-05523015v1
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Mutant emergence timing and population immunisation status impact epidemiological dynamics

Bastien Reyné , Ramsès Djidjou-Demasse , Mircea T Sofonea , Samuel Alizon

Journal of Theoretical Biology, 2025, 608, pp.112140. ⟨10.1016/j.jtbi.2025.112140⟩

Article dans une revue hal-05069967v1
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Within-host mathematical modeling of antibiotic-phage treatments on lysogenic and non-lysogenic bacteria dynamics

Hyacinthe M Ndongmo Teytsa , Ousmane Seydi , Berge Tsanou , Ramsès Djidjou-Demasse

Mathematical Methods in the Applied Sciences, 2025

Article dans une revue hal-04589005v2
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Leaky or polarised immunity: Non-Markovian modelling highlights the impact of immune memory assumptions

Bastien Reyné , Tsukushi Kamiya , Ramsès Djidjou-Demasse , Samuel Alizon , Mircea T Sofonea

PLoS Computational Biology, 2025, 21 (8), pp.e1013399. ⟨10.1371/journal.pcbi.1013399⟩

Article dans une revue hal-05283311v1
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Mathematical modeling of intra-and inter-species interactions in mixed malaria within-host infections

Malick Pane , Quentin Richard , Ousmane Seydi , Ramsès Djidjou-Demasse

Journal of Mathematical Analysis and Applications, 2025, 547 (1), pp.129251. ⟨10.1016/j.jmaa.2025.129251⟩

Article dans une revue hal-04580095v2
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Age-structured modeling of pathogen invasion and host resistance in fungal plant diseases

Moustapha Camara , Ramsès Djidjou-Demasse , Ousmane Seydi

Discrete and Continuous Dynamical Systems - Series B, 2025, ⟨10.3934/dcdsb.2026004⟩

Article dans une revue hal-05372381v1
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Evolutionary attractors in the chemostat model

Ramsès Djidjou-Demasse , Ousmane Seydi , Alain Rapaport

SIAM Journal on Applied Mathematics, 2025, 85 (6), pp.2459-2485. ⟨10.1137/24M1706001⟩

Article dans une revue hal-04734061v2
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Optimizing MDA and antimalarial treatment in the presence of drug resistance for effective malaria control

Manuela M Nimpa , Hyacinthe N Teytsa , Joseph Mbang , Charles S Wondji , Ramsès Djidjou-Demasse

Mathematical Biosciences and Engineering, 2025, 22 (8), pp.1898-1930. ⟨10.3934/mbe.2025069⟩

Article dans une revue hal-05121237v1
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Mosquito ageing modulates the development, virulence and transmission potential of pathogens

Bernard Somé , Edwige Guissou , Dari Da , Quentin Richard , Marc Choisy et al.

Proceedings of the Royal Society B: Biological Sciences, 2024, 291 (2014), pp.20232097. ⟨10.1098/rspb.2023.2097⟩

Article dans une revue hal-04744732v1
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Antiviral capacity of the early CD8 T-cell response is predictive of natural control of SIV infection: Learning in vivo dynamics using ex vivo data

Bharadwaj Vemparala , Vincent Madelain , Caroline Passaes , Antoine Millet , Véronique Avettand-Fenoel et al.

PLoS Computational Biology, 2024, 20 (9), pp.e1012434. ⟨10.1371/journal.pcbi.1012434⟩

Article dans une revue hal-04711877v1
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Understanding the transmission of bacterial agents of sapronotic dseases in aquatic ecosystems: a first spatially realistic metacommunity model

Ahmadou Sylla , Christine Chevillon , Ramsès Djidjou-Demasse , Ousmane Seydi , Carlos a Vargas Campos et al.

PLoS Computational Biology, 2024, pp.1991 - 2002. ⟨10.1371/journal.pcbi.1012435⟩

Article dans une revue hal-04350566v2
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Quantifying ivermectin's optimal strategy impacts on malaria transmission: A dual-structured mathematical model

Franck J Dongmo , Charles S Wondji , Berge Tsanou , Ramsès Djidjou-Demasse

Applicable Analysis, 2024, pp.1-39. ⟨10.1080/00036811.2024.2429103⟩

Article dans une revue hal-04860540v1
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On the necessity of accounting for age structure in human malaria transmission modeling

Quentin Richard , Marc Choisy , Thierry Lefèvre , Ramsès Djidjou-Demasse

Mathematical Biosciences, 2024, 378, pp.109319. ⟨10.1016/j.mbs.2024.109319⟩

Article dans une revue hal-04231975v3
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Within-host evolutionary dynamics of antimicrobial quantitative resistance

Ramsès Djidjou-Demasse , Mircea T Sofonea , Marc Choisy , Samuel Alizon

Mathematical Modelling of Natural Phenomena, 2023, 18, pp.24. ⟨10.1051/mmnp/2023019⟩

Article dans une revue hal-03194023v4
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Linking within-and between-host scales for understanding the evolutionary dynamics of quantitative antimicrobial resistance

Martin L Mann-Manyombe , Abdoulaye Mendy , Ousmane Seydi , Ramsès Djidjou-Demasse

Journal of Mathematical Biology, 2023, ⟨10.1007/s00285-023-02008-1⟩

Article dans une revue hal-03911294v2
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Mathematical model of Ehrlichia chaffeensis transmission dynamics in dogs

Folashade B Agusto , Ousmane Seydi , Ramsès Djidjou-Demasse

Journal of Biological Dynamics, In press, ⟨10.1080/17513758.2023.2287082⟩

Article dans une revue hal-04296909v1
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Growth bound and threshold dynamic for nonautonomous nondensely defined evolution problems

Ramsès Djidjou-Demasse , Ibou Goudiaby , Ousmane Seydi

Journal of Mathematical Biology, In press, ⟨10.1007/s00285-023-01966-w⟩

Article dans une revue hal-03883208v2
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Non-Markovian modelling highlights the importance of age structure on Covid-19 epidemiological dynamics

Bastien Reyné , Quentin Richard , Christian Selinger , Mircea T Sofonea , Ramsès Djidjou-Demasse et al.

Mathematical Modelling of Natural Phenomena, 2022, 17, pp.7. ⟨10.1051/mmnp/2022008⟩

Article dans une revue hal-03629334v1
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Understanding dynamics of Plasmodium falciparum gametocytes production: Insights from an age-structured model

Ramsès Djidjou-Demasse , Arnaud Ducrot , Nicole Mideo , Gaëtan Texier

Journal of Theoretical Biology, 2022, 539, ⟨10.1016/j.jtbi.2022.111056⟩

Article dans une revue hal-03030234v3
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An epi‐evolutionary model for predicting the adaptation of spore‐producing pathogens to quantitative resistance in heterogeneous environments

Frédéric Fabre , Jean-Baptiste Burie , Arnaud Ducrot , Sébastien Lion , Quentin Richard et al.

Evolutionary Applications, 2022, pp.95-110. ⟨10.1111/eva.13328⟩

Article dans une revue hal-03465168v1
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Differential preferences for RBCs is key for Plasmodium species evolutionary diversity within human host

Ramsès Djidjou-Demasse , M L Mann-Manyombe , O Seydi , I V Yatat-Djeumen

Studies in Applied Mathematics, 2022, ⟨10.1111/sapm.12527⟩

Article dans une revue hal-03272322v1
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Optimal intervention strategies of staged progression HIV infections through an age-structured model with probabilities of ART drop out

Mboya Ba , Ramsès Djidjou-Demasse , Mountaga Lam , Jean Jules Tewa

Mathematical Modelling of Natural Phenomena, 2021, ⟨10.1051/mmnp/2021024⟩

Article dans une revue hal-02357239v1
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Memory is key in capturing COVID-19 epidemiological dynamics

Mircea T Sofonea , Bastien Reyné , Baptiste Elie , Ramsès Djidjou-Demasse , Christian Selinger et al.

Epidemics, 2021, 35, pp.100459. ⟨10.1016/j.epidem.2021.100459⟩

Article dans une revue hal-03289624v1
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Age-structured non-pharmaceutical interventions for optimal control of COVID-19 epidemic

Quentin Richard , Samuel Alizon , Marc Choisy , Mircea T Sofonea , Ramsès Djidjou-Demasse

PLoS Computational Biology, 2021, ⟨10.1371/journal.pcbi.1008776⟩

Article dans une revue hal-02879512v3
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Within-host bacterial growth dynamics with both mutation and horizontal gene transfer

Ramsès Djidjou-Demasse , Samuel Alizon , Mircea T Sofonea

Journal of Mathematical Biology, 2021, ⟨10.1007/s00285-021-01571-9⟩

Article dans une revue hal-02500420v1
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Optimizing the early detection of low pathogenic avian influenza H7N9 virus in live bird markets

Claire Guinat , Damian Tago , Tifenn Corre , Christian Selinger , Ramsès Djidjou-Demasse et al.

Journal of the Royal Society Interface, 2021, 18 (178), pp.20210074. ⟨10.1098/rsif.2021.0074⟩

Article dans une revue hal-03285866v1
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Human-vector malaria transmission model structured by age, time since infection and waning immunity

Quentin Richard , Marc Choisy , Thierry Lefèvre , Ramsès Djidjou-Demasse

Nonlinear Analysis: Real World Applications, 2021, ⟨10.1016/j.nonrwa.2021.103393⟩

Article dans une revue hal-03090649v1
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Asymptotic and transient behaviour for a nonlocal problem arising in population genetics

Jean-Baptiste Burie , R Djidjou-Demasse , Arnaud Ducrot

European Journal of Applied Mathematics, 2020, 31 (1), pp.84-110. ⟨10.1017/S0956792518000487⟩

Article dans une revue hal-01874125v1

Slow convergence to equilibrium for an evolutionary epidemiology integro-differential system

Jean-Baptiste Burie , Ramsès Djidjou-Demasse , Arnaud Ducrot

Discrete and Continuous Dynamical Systems - Series B, 2020, 25 (6), pp.2223-2243. ⟨10.3934/dcdsb.2019225⟩

Article dans une revue hal-02888796v1

Investigating the Resurgence of Malaria Prevalence in South Africa Between 2015 and 2018: A Scoping Review

Gbenga Abiodun , Babatope. Adebiyi , Rita Abiodun , Olanrewaju Oladimeji , Kelechi Oladimeji et al.

The Open Public Health Journal, 2020, 13 (1), pp.119-125. ⟨10.2174/1874944502013010119⟩

Article dans une revue hal-02597335v1
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A Dynamical and Zero-Inflated Negative Binomial Regression Modelling of Malaria Incidence in Limpopo Province, South Africa

Gbenga Abiodun , Olusola Makinde , Abiodun Adeola , Kevin y Njabo , Peter Witbooi et al.

International Journal of Environmental Research and Public Health, 2019, 16 (11), pp.2000. ⟨10.3390/ijerph16112000⟩

Article dans une revue hal-02450365v1

Development and analysis of a malaria transmission mathematical model with seasonal mosquito life‐history traits

Ramsès Djidjou-Demasse , Gbenga Abiodun , Abiodun Adeola , Joel Botai

Studies in Applied Mathematics, 2019, ⟨10.1111/sapm.12296⟩

Article dans une revue hal-02450371v1

Study of Lasidiodiplodia pseudotheobromae, Neofusicoccum parvum and Schizophyllum commune, three pathogenic fungi associated with the Grapevine Trunk Diseases in the North of Tunisia

A. Rezgui , J. Vallance , A. Ben Ghnaya-Chakroun , E. Bruez , M. Dridi et al.

European Journal of Plant Pathology, 2018, 152 (1), pp.127-142. ⟨10.1007/s10658-018-1458-z⟩

Article dans une revue hal-02450374v1

Mosaics often outperform pyramids: insights from a model comparing strategies for the deployment of plant resistance genes against viruses in agricultural landscapes

Ramsès Emeric Djidjou Demasse , Benoît Moury , Frédéric Fabre

New Phytologist, 2017, 216 (1), pp.239-253. ⟨10.1111/nph.14701⟩

Article dans une revue hal-01604528v1

Steady state concentration for a phenotypic structured problem modeling the evolutionary epidemiology of spore producing pathogens

Ramsès Djidjou Demasse , Arnaud Ducrot , Frédéric Fabre

Mathematical Models and Methods in Applied Sciences, 2017, 27 (2), pp.385-426. ⟨10.1142/S0218202517500051⟩

Article dans une revue hal-01604796v1

Optimal control for an age-structured model for the transmission of hepatitis B

Ramsès Djidjou Demasse , Jean-Jules Tewa , Samuel Bowong , Yves Emvudu

Journal of Mathematical Biology, 2016, 73 (2), pp.305-333. ⟨10.1007/s00285-015-0952-6⟩

Article dans une revue hal-02450359v1

Bifurcation Analysis and Optimal Harvesting of a Delayed Predator–Prey Model

P. Tchinda Mouofo , R. Djidjou Demasse , J. J. Tewa , M. A. Aziz-Alaoui

International journal of bifurcation and chaos in applied sciences and engineering , 2015, 25 (01), pp.1550012. ⟨10.1142/S0218127415500121⟩

Article dans une revue hal-02304508v1
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Analysis of an Age-structured SIL model with demographics process and vertical transmission

Ramses Djidjou Demasse , Jean Jules Tewa , Samuel Bowong

Revue Africaine de Recherche en Informatique et Mathématiques Appliquées, 2014, Volume 17 - 2014 - Special issue CARI'12, pp.23-52. ⟨10.46298/arima.1966⟩

Article dans une revue hal-01300058v1

An age-structured within-host model for multi-strain malaria infections

Ramses Demasse , Arnaud Ducrot

SIAM Journal on Applied Mathematics, 2013, pp.572--593

Article dans une revue hal-00992786v1

Optimal control using state-dependent Riccati equation of lost of sight in a tuberculosis model

Yves Emvudu , Ramses Djidjou Demasse , Dany Djeudeu

Computational & Applied Mathematics, 2013, 32 (2), pp.191-210. ⟨10.1007/s40314-013-0002-1⟩

Article dans une revue hal-02450362v1
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Predator-prey model with prey harvesting, Holling response function of type III and SIS disease

Jean Jules Tewa , Ramses Djidjou Demasse , Samuel Bowong

BIOMATH, 2012, 1 (2), ⟨10.11145/j.biomath.2012.10.231⟩

Article dans une revue hal-02450368v1

Optimal Control of the Lost to Follow Up in a Tuberculosis Model

Yves Emvudu , Ramses Demasse , Dany Djeudeu

Computational and Mathematical Methods in Medicine, 2011, 2011, pp.1-12. ⟨10.1155/2011/398476⟩

Article dans une revue hal-02450354v1

Gestion durable des résistances de la vigne au mildiou : la modélisation mathématique à la rescousse

Ramsès Djidjou Demasse , A. Ducrot , Jean-Baptiste Burie , François Delmotte , Frédéric Fabre

13. Journée technique du CIVB, Conseil Interprofessionnel des Vins de Bordeaux (CIVB). FRA., Feb 2017, Bordeaux, France

Communication dans un congrès hal-02787146v1
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Mosaics of plant disease resistance genes are a more versatile means of achieving disease control than pyramids in most agricultural landscapes

Ramsès Emeric Djidjou Demasse , Benoît Moury , Frédéric Fabre

10. Conférence de la Société française de phytopathologie - 12. European foundation for plant pathology conference, May 2017, Malo-les-Bains, France. , 2017, Deepen knowledge in plant pathology for innovative agro-ecology

Poster de conférence hal-02733690v1
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Eco-epidemiological thresholds for malaria transmission in multi-species, phenotypically structured mosquito populations

Fallou Seck , Ousmane Seydi , Nicolas Moiroux , Ramsès Djidjou-Demasse

2026

Pré-publication, Document de travail hal-05450492v1
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Modeling the impact of ivermectin-based optimal strategies on malaria control: the role of formulation, coverage, and mosquitocidal efficacy timing

Franck J Dongmo , Angelique Porciani , Nicolas Moiroux , Hermann S Pooda , Roch K Dabiré et al.

2025

Pré-publication, Document de travail hal-05335342v1
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Optimizing multi-drug strategies to prevent antimicrobial quantitative resistance: A nested within-and between-host model

Martin L Mann-Manyombe , Mircea T Sofonea , Marc Choisy , Ramsès Djidjou-Demasse

2025

Pré-publication, Document de travail hal-04894904v1
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Modeling the evolutionary dynamics of insecticide quantitative resistance in mosquito populations

Sylvère Kezeta-Bondja , Martin L Mann-Manyombe , Jean-Jules Tewa , Charles S Wondji , Ramsès Djidjou-Demasse

2025

Pré-publication, Document de travail hal-04915614v1
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Remarks on invasion threshold for structured population models

Ramsès Djidjou-Demasse , Arnaud Ducrot , Malick Pane , Ousmane Seydi

2025

Pré-publication, Document de travail hal-05142856v1
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Within-host dynamics of lysogen and non-lysogen bacteria with spontaneous prophage induction phenomenon

Hyacinthe Ndongmo Teytsa , Ousmane Seydi , Berge Tsanou , Ramsès Djidjou-Demasse

2023

Pré-publication, Document de travail hal-04035511v1
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Principal spectrum point and application to nonlocal dispersal operators

Ramsès Djidjou-Demasse , Mocatar Kandé , Ousmane Seydi

2022

Pré-publication, Document de travail hal-03691803v1
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Flow invariance for non densely defined Cauchy problems

Moustapha Dieye , Ramsès Djidjou-Demasse , Ousmane Seydi

2022

Pré-publication, Document de travail hal-03818279v1
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Epidemiological monitoring and control perspectives: application of a parsimonious modelling framework to the COVID-19 dynamics in France

Mircea T Sofonea , Bastien Reyné , Baptiste Elie , Ramsès Djidjou-Demasse , Christian Selinger et al.

2020

Pré-publication, Document de travail hal-02619546v1
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Épidémiologie mathématique & modélisation de la pandémie de COVID-19 : enjeux et diversité

Ramsès Djidjou-Demasse , Christian Selinger , Mircea T Sofonea

2020

Pré-publication, Document de travail hal-02924338v1
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Optimal COVID-19 epidemic control until vaccine deployment

R Djidjou-Demasse , Y. Michalakis , M Choisy , M. T. Sofonea , Samuel Alizon

2020

Pré-publication, Document de travail hal-02533223v1
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Modeling SIV kinetics supports that cytotoxic response drives natural control and unravels heterogeneous populations of infected cells

V Madelain , C Passaes , A. Millet , V. Avettand-Fenoel , Ramsès Emeric Djidjou Demasse et al.

2020

Pré-publication, Document de travail pasteur-02865372v1
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Modèles structurés et applications en dynamique des populations

Ramsès Djidjou-Demasse

Equations aux dérivées partielles [math.AP]. Université Le Havre Normandie, 2022

HDR tel-03700629v1