In this article, the throwing machine will be programmed to aid in repetitive training. All tennis training methods agree that repetitive training on specific points and distances of the ball improves the player's skills and allows him to learn new blocking techniques. There have...
Open access
Research Article10.9734/jerr/2022/v23i517608
The safety of lithium batteries has always been an important problem that restricts the rapid development of lithium batteries. In view of the problems such as the untimely and difficult monitoring of the thermal runaway behavior of the lithium battery energy storage system, a re...
Open access
Research Article10.9734/jerr/2022/v23i417606
The basic operational parameters of a simplified Pico hydropower system were investigated using five locally fabricated turbines with 3, 5, 7, 9 and 11 splined blades in conjunction with a vertical penstock of diameter 0.0762 m and nozzle of diameters 0.0158, 0.0212, 0.0266, 0.03...
Open access
Research Article10.9734/jerr/2022/v23i417607
In this paper, the authors reviewed the characteristics of a ball that descended one step each bounce of a flight of stairs and drew an analogy with a stepped spillway with a fully developed hydraulic jump. They used this concept with equations of motion, classical hydraulic jump...
Open access
Research Article10.9734/jerr/2022/v23i417604
The prolonged conflict between the Boko-Haram and the Nigerian military has led to the displacement of a lot of people from their communities forcing them to settle into Internally Displace Persons (IDP) camps over these years. This has placed a heavy burden on the government and...
Open access
Research Article10.9734/jerr/2022/v23i417605
Stepped spillways use their stepping nature to substantially dissipate energy in floodwater. Many researchers investigated the hydraulic and geometric relationships of the stepped spillway with a dam slope above 26.6o degrees that resulted in energy dissipation. But few studied s...
Open access
Research Article10.9734/jerr/2022/v23i417602
Land grid array or LGA package of semiconductor has been commonly used on our modern technology, from home gadgets up to industrial uses. Improvements to correct product defects and process issues are introduced to have quality products for customer satisfaction. Substrate warpag...
Open access
Research Article10.9734/jerr/2022/v23i317600
The presented research project describes the development of a copy paper product from recycled egg carton fiber material. The development included laboratory handsheet development and machine-made paper product produced on a 12-inch (304 mm) wide laboratory Fourdrinier paper mach...
Open access
Research Article10.9734/jerr/2022/v23i317599
Understanding the specific mechanism of pedestrian deceleration behavior can better provide data support and parameter calibration for pedestrian flow simulation. In this paper, by introducing a buffer space, designed the pedestrians walking single file experiment and field obser...
Open access
Research Article10.9734/jerr/2022/v23i317598
Lawrence J. Fabian (1945-2020) shared his expertise in automated public transportation, during a 40-year career, through his voluminous writings. He defined automated transit as large, driverless vehicles operating on guide ways, with the primary potential benefit of high-freque...
Open access
Research Article10.9734/jerr/2022/v23i317597
This work investigates the suitability of clay samples collected from Ogwashi-Ukwu and Oyede in Delta State as well as Ikpeshi and Afuze in Edo State for drilling mud formulation. The American Petroleum Institute (API) Standard for drilling mud formulation was adopted using 350 m...
Open access
Research Article10.9734/jerr/2022/v23i317596
Social media has shown to be a medium for the exchange of information, conducting commerce, and even for religious and political activity. The same site has been used to disseminate cyberbullying and hate speech. Cyberbullying is an offense when a perpetrator targets a victim wit...
Open access
Research Article10.9734/jerr/2022/v23i217595
The importance of irrigation practice in food production cannot be over-emphasised, however irrigation practices impact soils and other environmental parameters negatively. This necessitates the need for continuous monitoring of the impacts of irrigation on soils and the general...
Open access
Research Article10.9734/jerr/2022/v23i217594
Smart irrigation for sustainable agricultural water supply has been a critical initiative. In this paper, a fuzzy control system is designed to realize intelligent and precise irrigation by combining fuzzy control with traditional feedback control based on the features that soil...
Open access
Research Article10.9734/jerr/2022/v23i217593
Intelligent smart grids combine the generation, storage and consumption of energy systems. The opportunities to generate renewable energy from wind, solar and hydropower are generally higher in rural areas than in cities. The future development of the energy system is based on th...
Open access
Research Article10.9734/jerr/2022/v23i217592