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Aug 16, 2023Open Access
Older people interacting with wearable devices have inspired many researchers to explore and contribute to a wide range of research threads. However, much of the research has focused on the technical aspects of wearable devices and there is a lack of user-centered research, and there are still many gaps in the literature on wearable device interaction for older people. In this literature review, interaction techniques for older people using wearable devices are summarized. The analysis of 115 re...
Jun 16, 2023Open Access
The rising popularity of mobile payments can be attributed to the widespread use of smartphones and their applications. Despite its potential to simplify our lives, its adoption in African countries has been limited. This paper aims to enhance our understanding of the critical factors that influence the acceptance of mobile payments in Nigeria by exploring the impact of “network externalities” in addition to conventional technology acceptance factors. It posits that performance expectancy, effor...
Aug 31, 2022Open Access
Monte Carlo software MCNP and Geant4 were used to study the factors affecting the detection efficiency of the lanthanum bromide detector, mainly including the thickness of the detector al shell and the size of the crystal. The results of the two softwares were compared. The results show that only the thickness of the front Al shell increases the detection efficiency of the full energy peak, and the side al shell has little effect on the detection efficiency of the full energy peak; The increase ...
Jun 20, 2022Open Access
Today the rate of vehicle theft is very high. For this reason, vehicle security systems have become one of the main requirements for vehicle users. As the frequency of accidents increases due to traffic jams, the safety of the vehicle is of paramount importance to the vehicle owner. The cost of the anti-theft systems is also expensive; hence an effective alternative is needed. This paper aims to build a vehicle safety system by using various small-size, low-power, and low-cost devices compared w...
Oct 25, 2021Open Access
With the advent of the intelligent age of electronic information and the continuous improvement of application management, electronic information technology has penetrated into the fields of industry, agriculture, intelligent breeding, and smart home. The aquaculture industry is gradually changing from the traditional method of relying solely on human measurement, control and management to an intelligent, informatized, and automated modern aquaculture method. In order to design an intelligent br...
Jun 30, 2021Open Access
Traumatic Brain Injuries (TBI’s) are any disorder in a brain’s functionality that can be caused by numerous reasons, including motor-vehicle crashes, falls, and assaults. Impractical in-vivo head injury experiments compel bio- engineers to develop a robust, accurate, and efficient computer model. In this study, bovine brain samples were tested under a confined compression testing machine. Consequently, the result from unconfined compression tests, at quasi-static strain rates of ε=0.0004...
Jun 23, 2021Open Access
With the development of artificial intelligence and other associated models like machine learning, data science, industrial internet of things etc. it has become a significant challenge for the majority of the practitioners and researchers in field of environmental monitoring and management to keep pace with. Though many international universities in developed countries are making significant contributions to this field, the obstacle remained constant in Bangladesh. Focusing the background, this...
Apr 15, 2021Open Access
The purpose of this paper is to produce reasonably accurate direct estimators, not only for the characteristics of whole Population but also for a variety of Subpopulations or domains. Many policymakers and researchers also want to obtain statistics for small domains. These small domains are also called small areas, because the sample size in the area or domain from the Survey is small. Due to small sample size, domain-specific direct estimators provide an acceptably large coefficient of variati...
Dec 16, 2020Open Access
In real life, we want to understand our own health status and prevent the risk of disease outbreaks. We need to monitor the physical signs in real time, store and analyze the data, and call the police in time if there is an emergency. According to this requirement, this article designed a multifunctional portable smart health tester based on STM32F407, with Cprtex-M4 32-bit high-performance STM32F407ZGT6 microcontroller as the control core, HP-6 heart rate and blood pressure detection module, LC...
Sep 23, 2020Open Access
Parallel self-timed adder (PASTA) is a newly introduced asynchronous adder. It shows appreciable average-case performance without any special speedup circuitry or look-ahead schema, but its worst-case performance is almost similar to that of ripple carry adder. It is therefore an important research issue to find a technique to improve its worst-case performance without any significant compromise in its other performances. This paper investigates the possibility of such performance improvement of...
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