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Moster Zhangazha, Simon Mukwembi, Farai Nyabadza
Let G be a connected simple graph of order n≥3, and let ξc(G)=∑v∈V(G)ecG(v)degG(v) denote its eccentric connectivity index. We study the lower bounds for ξc(G) in terms of the irregularity index t(G), defined as the number of distinct vertex degrees of G. …
Afrique du Sud (code pays fourni par la source)
Mlyashimbi Helikumi, Tinashe Victor Mupedza, Shingirai Tangakugara Murambiwa, Moster Zhangazha et autres
Hepatitis C virus (HCV) infection remains highly prevalent among people who inject drugs (PWID), where treatment effectiveness is strongly influenced by adherence and behavioral relapse. In this study, we develop and analyze a deterministic compartmental model to examine the impact of treatment …
Tanzanie, Zimbabwe, Afrique du Sud, us (code pays fourni par la source)
Tichaona Chikore, Moster Zhangazha, Farai Nyabadza
Social media engagement drives both individual behavior and content dissemination, yet traditional analytics often reduce interactions to simple counts, obscuring the complex structures underlying user activity. In the highly competitive digital landscape, understanding how users interact with content is crucial for businesses …
Afrique du Sud, ae (code pays fourni par la source)
Tichaona Chikore, Farai Nyabadza, Moster Zhangazha
Malawi's economy is predominantly agrarian, and agriculture plays a central role in national development. Agriculture contributes 25–30% of GDP, generates more than 80% of export earnings, and provides employment for over 70% of the population, largely through smallholder systems. Despite this importance, …
Afrique du Sud, ae (code pays fourni par la source)
Moster Zhangazha, Alex Somto Arinze Alochukwu, Elizabeth Jonck, Ronald J. Maartens et autres
The accurate determination of bond lengths is fundamental to understanding molecular geometry and the physicochemical behavior of chemical compounds. However, obtaining these measurements is often challenging, as both experimental techniques and advanced quantum-chemical methods are complex, computationally demanding, and costly to apply …
Afrique du Sud, ae (code pays fourni par la source)
Tichaona Chikore, Mwawi Nyirenda-Kayuni, Queensley C. Chukwudum, Zviiteyi Chazuka et autres
There is a growing interest in using mathematical models to understand crime dynamics, crime prevention, and detection. The past decade has experienced a relative reduction in conventional crimes, but this has been replaced by significant increases in cybercrime. In this paper, we …
Afrique du Sud, Malawi, Nigéria, Zimbabwe, Eswatini, Ghana, gb (code pays fourni par la source)
Tichaona Chikore, Mwawi Nyirenda-Kayuni, Queensley C. Chukwudum, Zviiteyi Chazuka et autres
Abstract There is a growing interest in using mathematical models to understand crime dynamics, crime prevention, and detection. The past decade has experienced a relative reduction in conventional crimes, but this has been replaced by significant increases in cybercrime. We use a …
Afrique du Sud, Malawi, Nigéria, Zimbabwe, Eswatini, Ghana, gb (code pays fourni par la source)
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