Appropriate technology and design for housing delivery undoubtedly has abundant cost benefit and other advantages. However, the acceptance of its usage and application for sustainable and affordable housing delivery is rare. Appropriate technology supports and enhances good life...
Open access
Research Article10.9734/jerr/2022/v23i8739
This paper presents a combination of Linear Quadratic Regulator (LQR) and Sliding Mode Control (SMC) methods to control a four-rotor unmanned aerial vehicle (UAV) that takes off and lands vertically (VTOL). Although controlling UAVs is difficult due to their highly nonlinear char...
Open access
Research Article10.9734/jerr/2022/v23i7735
The design and optimization of chemical equipment and devices and the control of chemical processes involve many factors and are very complex. The traditional methods and technologies cannot obtain satisfactory results. Artificial neural network technology has the ability to deal...
Open access
Research Article10.9734/jerr/2022/v23i7733
Safety issues in experimental studies of gas-lift wells are considered, methods of well research are analyzed, and functions of approximation of the main characteristics of a gas-lift well are analyzed. It is shown that in order to ensure safety in experimental well testing in or...
Open access
Research Article10.9734/jerr/2022/v23i7734
This paper examines the coverage of three UMTS networks in Calabar, using the received signal code power (RSCP). A drive test conducted with the aid of a TEMS investigation software, collected log files of RSCP which were analyzed as coverage plots by a TEMS discovery software an...
Open access
Research Article10.9734/jerr/2022/v23i7732
Aims: To simulate and construct a single phase, pure sine wave inverter using a high frequency transformer. Study Design: Experimental design through simulation studies using pulse width modulation and proportional integral controller. Place and Duration of Study: Department of P...
Open access
Research Article10.9734/jerr/2022/v23i717619
The key process parameters for the filtration loss of water-based drilling fluid (WBDF), using Arachishypogaea shells cellulose (AHSC) were optimized using the two-level-two factor full factorial design of Response Surface Methodology (RSM). This research reveals the key outcomes...
Open access
Research Article10.9734/jerr/2022/v23i617618
Traffic signs are the oldest and most commonly used Traffic Control Device (TCD). These signs convey messages in words or symbols and erected to regulate, warn, or guide the road users (motorists, and pedestrians). This study investigated the level of compliance of traffic contro...
Open access
Research Article10.9734/jerr/2022/v23i617617
The main objective of this research is to investigate experimentally the viability and effectiveness of the proposed ferrocement permanent forms and the effect of the test parameters on the behavior of the reinforced concrete ferrocement beams. And investigate the viability of us...
Open access
Research Article10.9734/jerr/2022/v23i617616
Aim: The aim of this research was to investigate the level of pollutants deposition on soil generated from a gas flaring site. Study Design: The Soil Samples for this study were picked from two sets of locations (a proposed gas flare site situated at Ogbogu Gas plant and two cont...
Open access
Research Article10.9734/jerr/2022/v23i617614