The impressive growth of the demand for wireless services for 5G and beyond, particularly encouraged by the Internet of Things, Internet of Everything, etc., raised up the importance of the problems related to the drastic increase (among others) of spectrum efficiency of the syst...
Open access
Research Article10.9734/jamcs/2022/v37i730464
The incompleteness of set theory \(Z F C\) leads one to look for natural nonconservative extensions of \(Z F C\) in which one can prove statements independent of \(Z F C\) which appear to be "true". One approach has been to add large cardinal axioms.Or, one can investigate second...
Open access
Research Article10.9734/jamcs/2022/v37i730463
In trade credit financing, failure in payment leads to great loss or total collapse of business. Thus, good policies are invented to address situations when retailers or customers are suspected to be credit – risk in order to reduce the effect of the failure in payments on the bu...
Open access
Research Article10.9734/jamcs/2022/v37i730462
In this paper, a quadrex algorithm for quadratic programming problems is introduced (n = 2) under linear and quadratic constraints. The quadrex algorithm considers on the behavior of the quadratic function near the origin or a translate of the origin, performs a series of transla...
Open access
Research Article10.9734/jamcs/2022/v37i630461
Radio technologies are driven by a never-ending quest for capacity and thus high throughput, associated with a constant need to improve the quality of the transmission. Thus, the massive MIMO (Multiple Input Multiple Output) technology has been found to be a powerful system to op...
Open access
Research Article10.9734/jamcs/2022/v37i630460
Let \(\left\{X_{n}, n \geq 1\right\}\) be a sequence of independent and identically distributed random variables with a common distribution function F. Let \((S_{n})\) be the partial sum sequence. Set \(T_{n}=S_{n+a_{n}}-S_{n}=\sum_{k=n+1}^{n+a_{n}} X_{k}\) The sum (T_{n}\)...
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Research Article10.9734/jamcs/2022/v37i630459
Minimizing the computational cost of polynomial evaluation is a main problem in Computational Science. Horner's algorithm efficiently solves the problem of evaluating a polynomial of degree n in time O(n). It is also used to evaluate multivariate polynomials and, as an extension,...
Open access
Research Article10.9734/jamcs/2022/v37i630457
The characterization of nite local rings via the well known structures of their zero divisor graphs and cayley graphs remains an open problem. Some classes of completely primary finite rings which are local, have however been characterized by the compartments of their units and z...
Open access
Research Article10.9734/jamcs/2022/v37i630456
Cancer is a menace to public health globally. Human Papillomavirus (HPV) is a sexually transmitted virus and has been linked to several cancers such as cervical cancer, anal cancer, oropharyngeal cancer and neck cancer. In this research a mathematical model based on a system of o...
Open access
Research Article10.9734/jamcs/2022/v37i530454
In this paper, a mathematical model for COVID-19 disease incorporating clinical management based on a system of Ordinary Differential Equations is developed. The existence of the steady states of the model are determined and the effective reproduction number derived using the nex...
Open access
Research Article10.9734/jamcs/2022/v37i530452