The study discusses the Buys-Ballot estimates for linear trend-cycle and seasonal indices with the expected values for mixed model in time series analysis. The emphasis is to derive the expected values of row, column and overall means of the of Buys-Ballot table for the mixed mod...
Open access
Research Article10.9734/ajr2p/2023/v7i4153
Anastasia K. Utapara, A. A. Agung Ngurah Gunawan, I. Nengah Sandi, I. Gusti Agung Widagda, Komang Ngurah Suarbawa & I. Gusti Agung Ayu Ratnawati·Asian Journal of Research and Reviews in Physics·2023
An alarm or reminder has been successfully designed to remind us when it is time to fill the brake fluid so as to avoid accidents when riding a motorbike with electronic components which are arranged, including Nex motorbike, Dot-3 brake fluid, Arduino Uno, Psi100 oil pressure se...
Open access
Research Article10.9734/ajr2p/2023/v7i4152
The expected values of Buys-Ballot estimates with the error terms for multiplicative model in time series decomposition when trend-cycle component is linear is discussed. The expected values of Buys-Ballot estimates of row, column and overall means with the error terms are derive...
Open access
Research Article10.9734/ajr2p/2023/v7i4151
Research has been carried out on integrating the results of Sentinel-2A and laboratory image data measurements in the form of a mathematical model that can be used to estimate the concentration and spatial distribution of Pb and Total Suspended Solid (TSS) of the Suwung estuary,...
Open access
Research Article10.9734/ajr2p/2023/v7i4150
The present study investigated the monthly average daily mean temperature, relative humidity, surface pressure, cloud cover, and sunshine hours associated with monthly variations in surface water vapour density (SWVD) for the period extending from 1979 to 2016 for Benin (Latitude...
Open access
Research Article10.9734/ajr2p/2023/v7i4148
The present study estimate and investigate the variation of albedo for Maiduguri situated in the Sahelian region of Nigeria, using meteorological data of global solar radiation obtained from the National Aeronautics and Space Administration (NASA) extending for a period between 1...
Open access
Research Article10.9734/ajr2p/2023/v7i4149
Not all wavelengths incident on a solar cell enhances the efficiency of the cell. Some wavelengths only cause electrons to twist and vibrate in their bonds which heats up the cell and inevitably hinder its efficiency. To tackle this problem, solar cells need to be exposed to dist...
Open access
Research Article10.9734/ajr2p/2023/v7i4147
This research work focused on the preparation of Monazite nanoparticles using ball milling technique and the determination of its optical properties. High energy ball milling was used to prepare nanoparticles from the bulk materials using the top-down technique. Debye–Scherer for...
Open access
Research Article10.9734/ajr2p/2023/v7i4146
This study looked into the levels of heavy metal concentrations (Ni, Fe, Cd, and Pb) in a portable well water sample from Dutsin-ma, Katsina State. A water sampler bottle was used to gather ten water samples from various randomly chosen wells. By adding HNO3, and HCl, heating the...
Open access
Research Article10.9734/ajr2p/2023/v7i4145
Activity concentration levels and some radiological parameters owing to natural radioactivity in the soil samples randomly obtained in gold tailing sites in Ijesa-land Southwestern Nigeria were analyzed. Analyzed results from 30 soil samples using multi-channeled NaI gamma detec...
Open access
Research Article10.9734/ajr2p/2023/v7i4144