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The purpose of this research is to propose a new choice of nonnegative parameter t in Dai–Liao conjugate gradient method.

Conjugate gradient algorithms are used to solve both constrained monotone and general systems of nonlinear equations. This is made possible by combining the conjugate gradient method with the Newton method approach via acceleration parameter in order to present a derivative-free method.

A conjugate gradient method is presented by proposing a new Dai–Liao nonnegative parameter. Furthermore the proposed method is successfully applied to handle the application in motion control of the two joint planar robotic manipulators.

The proposed algorithm is a new approach that will not either submitted or publish somewhere.

This paper aims to examine issues of bribery, cronyism and nepotism in one of the most corrupt countries in Africa.

This is a single-country case study, drawing on material dating from the mid-1970s, including court cases.

The corruption is pervasive and systemic, showing severe problems with governance in general, in the sector and against corruption. Nonetheless, two operators, one South African and one Nigerian, have delivered extensive access to mobile networks.

The system of governance requires significant structural reforms, if the burden of corruption is to be reduced.

This paper sheds new and explicit light on the complex history of telecommunications in Nigeria. It adds to the small base of material on corruption in the telecommunications sector. It identifies issues that could usefully be taken up by institutions in Nigeria.