Research Articles in Computer Engineering
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Item DEVELOPMENT OF A FACE MASK DETECTION SYSTEM USING SINGLE SHORT ALGORITHM: A CASE STUDY OF ELIZADE UNIVERSITY(LAUTECH Journal of Computing and Informatics, 2023-06) Ogunniyi, Julius; Olowu, Adekemi; Shobowale, Yusuf; Ogidan, Olugbenga; Asaniyan, OlufemiThis paper discusses the development of a Face Mask Detection System using a Single Short algorithm for the prevention of the spread of COVID-19 in public places. Several works have been done in the detection of face masks; however, there is a need to increase the detection speeds while maintaining their high accuracy for large datasets. The developed system consists of both software and hardware components. The model of the system was developed with a Single Short algorithm with a total of Nine Hundred and Two (902) datasets with the faces of people with and without face masks, which were collected from Elizade University, Ilara-Mokin, Ondo State of Nigeria. The Single Short Detection MobileNetv2 Algorithm was used to develop a predictive model and deployed on the Raspberry Pi 4 microcontroller. Percentage accuracy, F1 score, Recall, and Precision were the performance evaluation metrics used for the work. Also, a questionnaire was distributed to fifty (50) participants, mostly students and staff of Elizade University, Ilara-Mokin, who tested the system with and without wearing a face mask. The result of the system's performance evaluation indicates an accuracy of 99.86%, an F1 score of 100%, a recall of 100%, and a precision of 100%. The developed system can be miniaturised and reproduced to make the entire system smaller and more affordable. With the availability of the system's prototype, the development of the system for access control in public places such as stadiums, shopping malls, and schools is possible.Item Development of a Peak Flow Meter to Remotely Monitor Asthmatic Patients in Emergency Cases(FUOYE Journal of Engineering and Technology, 2023-06-30) Ogunniyi, Julius O.; Elesemoyo, Isaac O.; Oyewole, Oyeyemi T.; Olowu, Adekemi J.; Owodolu, OpeyemiThere have been peak flow meter systems for monitoring asthma patients, however, there is a need to remotely carry out this monitoring to help the patients in case of emergency. This paper presents a mobile health device for tracking asthmatic patient locations during emergencies. The system design consists of nodeMCU microcontroller, MPX5010DP pressure sensor, and a power pack system. The system makes use of the following technologies; Wi-Fi, GPS, Google Maps, and SMS for communication of signals and messages between the user’s device and devices of other components of the system. The system allows the involvement of the patient’s next of kin and emergency personnel in the monitoring and tracking of asthmatic patients during emergencies. The C programming language was used to write code for the microcontroller, while the mobile application of the system was done using the Dart programming language. The expiratory flow rate value was used to measure the performance of the system. A prototype of the system was successfully developed, and tested. The system works as expected, with each component responding well to signals received. This system can be used to monitor asthmatic patients, especially during health emergency conditions.Item Temperature changes with die profiles in axisymmetric forward extrusion process(Journal of Applied Scence, Engineering and Technology, 2008) Ajiboye, J.S.; Adeyemi, M.B.Transient heat transfer and temperature change due to varying die opening shapes in a direct extrusion of lead have been numerically investigated and presented. Upper bound method of analysis was used to evaluate the internal heat generation due to plastic deformation and frictional heat at various stages of the extrusion process. At the extrusion die land region, temperature rises with increasing complexity of die openings geometry with I-shaped section, giving the highest temperature rise, followed by T-shaped section, rectangular, circular shaped die openings with square section die opening, giving the least temperature rise for any given extrusion parameter. The die land zone shows increasing temperature rise with increasing friction coefficient, while increasing friction coefficient has no overall effect on the dead metal zone temperature rise. Increasing die land length leads to increasing contact area between the extrudate and the die resulting in increasing frictional power. It is, therefore, seen that die land is one of the critical factors to consider avoiding surface cracking or hot-shortness in extrusion.Item Tribological efficacy and stability of phospholipid-based membrane lubricants in varying pH chemical conditions(Biointerphases, 2016-01-04) Pawlaka, Zenon; Urbaniak, Wieslaw; Afara, Isaac O.; Yusuf, Kehinde Q.; Banaszak-Piechowska, Agnieszka; Oloyede, AdekunleIn this study, the authors examine the influence of joint chemical environment by measuring changes in the tribological properties (friction coefficient and charge density) of contacting surfaces of normal and degenerated cartilage samples in bath solutions of varying pH (2.0–9.0). Bovine articular cartilage samples (n¼54) were subjected to several surface measurements, including interfacial energy, contact angle, and friction coefficient, at varying pH. The samples were delipidized and then subjected to the same measurement protocols. Our results reveal that the interfacial energy and charge density, which have been shown to be related to friction coefficient, decrease with pH in the acidic range and approach constant values at physiological (or synovial fluid) pH of 7.4 and beyond it, i.e., toward basic pH domain. The authors conclude that this rather complex response explains the long-term efficacy with respect to ageing and associated pH changes, of the phospholipid layers that facilitate the almost frictionless, hydration–lubrication involving contact in the mammalian musculoskeletal system.Item HISTOGRAM NORMALIZATION TECHNIQUE FOR PREPROCESSING MAMMOGRAPHIC IMAGES(LAUTECH Journal of Engineering and Technology, 2016) Adepoju, Temilola M.; Adeyemo, Temitope T.; Fagbola, Temitayo M.; Omidiora, Elijah O.; Olabiyisi, Stephen O.images requires high computational capabilities. Pre-processing is one of the most important step in the mammogram analysis due to poor captured mammographic image qualities. Pre-processing is basically used to correct and adjust the mammogram image for further study and classification. Many image pre-processing techniques have been developed over the past decades to help radiologists in diagnosing breast cancer. Most studies conducted have proven that a pre-processed image is easier for radiologist to accurately detect breast cancer especially for dense breast. Different types of techniques are available for preprocessing of mammograms, which are used to improve image quality, remove noise, adjust contrast, enhance the image and preserve the edges within the image. This paper acquired 20 digital mammograms from Mammographic Image Analysis Society (MIAS) database and uses Histogram Normalization algorithm for pre-processing of the mammograms. A percentage of 95% was obtained. It was observed that the pre-processed mammographic images displayed breast abnormalities clearer with little or no noise.