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Article
Publication date: 14 December 2021

Abubakar Sani Halilu, Arunava Majumder, Mohammed Yusuf Waziri, Kabiru Ahmed and Aliyu Muhammed Awwal

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

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Abstract

Purpose

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

Design/methodology/approach

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.

Findings

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.

Originality/value

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

Article
Publication date: 14 May 2018

Ewan Sutherland

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

Abstract

Purpose

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

Design/methodology/approach

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

Findings

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.

Practical implications

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

Originality/value

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.

Details

Digital Policy, Regulation and Governance, vol. 20 no. 3
Type: Research Article
ISSN: 2398-5038

Keywords

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