• A mathematical model on the impact of awareness and traditional medicine in the control of Ebola : case study of the 2014-2016 outbreaks in Sierra Leone and Liberia 

  Tassé, Arsène Jaures Ouemba; Tsanou, Berge; Kum, Cletus K.; Lubuma, Jean (Oxford University Press, 2024-08)

  Please read abstract in article.
• Weighted Fejer, Hermite–Hadamard, and trapezium-type inequalities for (h1,h2–Godunova–Levin Preinvex function with applications and two open problems 

  Ahmadini, Abdullah Ali H.; Afzal, Waqar; Abbas, Mujahid; Aly, Elkhateeb S. (MDPI, 2024-02)

  This note introduces a new class of preinvexity called (h1, h2)-Godunova-Levin preinvex functions that generalize earlier findings. Based on these notions, we developed Hermite-Hadamard, weighted Fejér, and trapezium ...
• A characterization of procyclic groups via complete exterior degree 

  Rodrigues, Bernardo G.; Russo, Francesco G. (MDPI, 2024-04)

  Please read abstract in the article.
• A metapopulation model with exit screening measure for the 2014–2016 West Africa Ebola virus outbreak 

  Tasse, Arsene Jaures Ouemba; Tsanou, Berge; Woukeng, Jean Louis; Lubuma, Jean M.-S. (MDPI, 2024-12)

  We construct a new metapopulation model for the transmission dynamics and control of the Ebola Virus Disease (EVD) in an environment characterized by considerable migrations and travels of people. It is an extended ...
• Hyers–Ulam stability of 2D-convex mappings and some related new Hermite–Hadamard, Pachpatte, and Fejér Type integral inequalities using novel fractional integral operators via totally interval-order relations with open problem 

  Afzal, Waqar; Breaz, Daniel; Abbas, Mujahid; Cotirla, Luminita-Ioana; Khan, Zareen A.; Rapeanu, Eleonora (MDPI, 2024-04-19)

  The aim of this paper is to introduce a new type of two-dimensional convexity by using totalorder relations. In the first part of this paper, we examine the Hyers–Ulam stability of two-dimensional convex mappings by using ...
• Optimal control approach for implementation of sterile insect techniques 

  Bliman, P.-A.; Cardona-Salgado, D.; Dumont, Yves; Vasilieva, O. (Springer, 2024-03)

  The vector or pest control is essential to reduce the risk of vector-borne diseases or crop losses. Among the available biological control tools, the sterile insect technique (SIT) is one of the most promising. However, ...
• A climate-based metapopulation malaria model with human travel and treatment 

  Danquah, Baaba A.; Chirove, Faraimunashe; Banasiak, Jacek (Springer, 2025-03)

  A climate-based metapopulation malaria model is formulated by incorporating human travel between zones with varying climatic factors, effective and counterfeit drug treatments, and time-periodic parameters for the mosquito ...
• A bulk-surface mechanobiochemical modelling approach for single cell migration in two-space dimensions 

  Hernandez-Aristizabal, David; Garzon-Alvarado, Diego-Alexander; Duque-Daza, Carlos-Alberto; Madzvamuse, Anotida (Elsevier, 2024-12)

  In this work, we present a mechanobiochemical model for two-dimensional cell migration which couples mechanical properties of the cell cytosol with biochemical processes taking place near or on the cell plasma membrane. ...
• On pretabular extensions of relevance logic 

  Fallahi, Asadollah; Raftery, James G. (Springer, 2024-10)

  We exhibit infinitely many semisimple varieties of semilinear De Morgan monoids (and likewise relevant algebras) that are not tabular, but which have only tabular proper subvarieties. Thus, the extension of relevance ...
• Understanding the dual effects of linear cross-diffusion and geometry on reaction–diffusion systems for pattern formation 

  Sarfaraz, Wakil; Yigit, Gulsemay; Barreira, Raquel; Remaki, Lakhdar; Alhazmi, Muflih; Madzvamuse, Anotida (Elsevier, 2024-09)

  In this work, we study the dual effects of linear cross-diffusion and geometry on reaction–diffusion systems for pattern formation on rectangular domains. The spatiotemporal dynamics of the reaction–diffusion system with ...
• Hybrid retirement strategy in South Africa 

  Van Niekerk, Andries; Moutzouris, Vasili; Mare, Eben (AOSIS, 2024-09-17)

  BACKGROUND : Many retirees in South Africa face the challenge of either outliving their retirement savings or living below their means. Studies suggest a ‘safe’ withdrawal rate of between 4% and 5%, which is below the ...
• Exploiting non-parallel risk premia in the South African sovereign bond market 

  Hariparsad, Sanveer; Mare, Eben (AOSIS, 2024-05-31)

  BACKGROUND : This study focuses on diversifying fixed income attribution beyond yield and duration by identifying new risk premia applicable to various investment strategies. AIM : To identify cross-sectional bond risk ...
• Self-financing model for cabbage crops with pest management 

  Kambeu Youmbi, Aurelien; Touzeau, Suzanne; Grognard, Frédéric; Tsanou, Berge (Elsevier, 2024-12)

  Smallholder farmers rely on their farm earnings to cover operating costs and generate income. That is not an easy task because of the pests, which reduce yields and generate plant protection costs. The farm yield and plant ...
• LCD codes constructed from weakly-self-orthogonal 1-designs 

  Crnkovic, Vedrana Mikulic; Traunkar, Ivona; Rodrigues, Bernardo G. (American Institute of Mathematical Sciences, 2024)

  By a suitable extension of incidence matrices, orbit matrices, and submatrices of orbit matrices of weakly p-self-orthogonal 1-designs, in this paper we describe a construction of LCD codes over a finite field. To ...
• On compact packings of Euclidean space with spheres of finitely many sizes 

  Messerschmidt, Miek; Kikianty, Eder (Springer, 2024-02)

  Please read abstract in the article.
• Dynamics of a two-group model for assessing the impacts of pre-exposure prophylaxis, testing and risk behaviour change on the spread and control of HIV/AIDS in an MSM population 

  Tollett, Queen; Safdar, Salman; Gumel, Abba B. (KeAi Communications, 2024-03)

  Although much progress has been made in reducing the public health burden of the human immunodeficiency virus (HIV), which causes acquired immunodeficiency syndrome (AIDS), since its emergence in the 1980s (largely due to ...
• Simulating credit loss distributions: empirical versus the Vasicek model 

  Milonas, Natasa; Van Vuuren, Gary (EconJournals, 2024-03)

  Because credit losses can be substantial, managing credit risk is a focus area of risk measurement and management. It is important for financial institutions to select credit risk models that accurately forecast losses. ...
• Elementary equivalence in positive logic via prime products 

  Moraschini, Tommaso; Wannenburg, Johann Joubert; Yamamoto, Kentaro (Cambridge University Press, 2024)

  We introduce prime products as a generalization of ultraproducts for positive logic. Prime products are shown to satisfy a version of Łoś’s Theorem restricted to positive formulas, as well as the following variant of the ...
• Direct limits in categories of normed vector lattices and Banach lattices 

  Ding, Chun; De Jeu, Marcel (Springer, 2023-07)

  After collecting a number of results on interval and almost interval preserving linear maps and vector lattice homomorphisms, we show that direct systems in various categories of normed vector lattices and Banach lattices ...
• Embedded unbounded order convergent sequences in topologically convergent nets in vector lattices 

  Deng, Yang; De Jeu, Marcel (Springer, 2024-03)

  We show that, for a class of locally solid topologies on vector lattices, a topologically convergent net has an embedded sequence that is unbounded order convergent to the same limit. Our result implies, and often improves, ...

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