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Deep Transfer Learning Models for Mobile-Based Ocular Disorder Identification on Retinal Images

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Computers, Materials & Continua 2024年第7期80卷 139-161页

作者： Roseline Oluwaseun Ogundokun Joseph Bamidele Awotunde Hakeem Babalola akande Cheng-Chi Lee Agbotiname Lucky Imoize Department of Multimedia Engineering Kaunas University of TechnologyKaunas44249Lithuania Department of Computer Science Landmark UniversityOmu Aran251103Nigeria Department of Computer Science Faculty of Information and Communication SciencesUniversity of IlorinIlorin240003Nigeria Department of Telecommunication Science University of IlorinIlorin230003Nigeria Department of Library and Information Science Fu Jen Catholic UniversityNew Taipei City24205TaiwanChina Department of Computer Science and Information Engineering Fintech and Blockchain Research CenterAsia UniversityTaichung City41354TaiwanChina Department of Electrical and Electronics Engineering Faculty of EngineeringUniversity of LagosAkokaLagos100213Nigeria Department of Electrical Engineering and Information Technology Institute of Digital CommunicationRuhr UniversityBochum44801Germany

Mobile technology is developing *** phone technologies have been integrated into the healthcare industry to help medical ***,computer vision models focus on image detection and classification ***2 is a computer vision model that performs well on mobile devices,but it requires cloud services to process biometric image information and provide predictions to *** leads to increased *** biometrics image datasets on mobile devices will make the prediction faster,but mobiles are resource-restricted devices in terms of storage,power,and computational ***,a model that is small in size,efficient,and has good prediction quality for biometrics image classification problems is *** pre-trained CNN(PCNN)MobileNetV2 architecture combined with a Support Vector Machine(SVM)compacts the model representation and reduces the computational cost and memory *** proposed novel approach combines quantized pre-trained CNN(PCNN)MobileNetV2 architecture with a Support Vector Machine(SVM)to represent models efficiently with low computational cost and *** contributions include evaluating three CNN models for ocular disease identification in transfer learning and deep feature plus SVM approaches,showing the superiority of deep features from MobileNetV2 and SVM classification models,comparing traditional methods,exploring six ocular diseases and normal classification with 20,111 images postdata augmentation,and reducing the number of trainable *** model is trained on ocular disorder retinal fundus image datasets according to the severity of six age-related macular degeneration(AMD),one of the most common eye illnesses,Cataract,Diabetes,Glaucoma,Hypertension,andMyopia with one class *** the experiment outcomes,it is observed that the suggested MobileNetV2-SVM model size is *** testing accuracy for MobileNetV2-SVM,InceptionV3,and MobileNetV2 is 90.11%,86.88%,a

关键词： Retinal images ocular disorder deep transfer learning disease identification mobile device

Metal contamination assessment in the urban stream sediments and tributaries of coastal area southwest Nigeria

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Chinese Journal Of Geochemistry 2015年第3期34卷 431-446页

作者： Abiodun M.Odukoya Olumuyiwa akande Department of Geosciences University of Lagos

A geochemical assessment of the fifty surface stream sediments from Ikorodu Southwest Nigeria was carried out to determine the level of contamination. The sediments were dried, disaggregated and sieved to \75 lm fraction for geochemical analysis, using the aqua-regia digestion technique and inductively coupled plasma mass spectrometry. Major elements showed the following trend Fe [ Al [ Ca [ Na [ Mg [ K [ P [ Ti and were below the average shale concentration, except for Na in one *** from factor and correlation analyses showed two groups of trace elements Ni, Co, Mn, U, Th, Sr, V, La, Cr, Ba,Sc, Ga, Cs, Nb, Rb, Y,Ce and Mo, Pb, Zn, As, Cd, Sb, Sn, Zr,which were from geogenic and anthropogenic sources, respectively. The enrichment factor showed that Cd, Bi, Pt, Mo and Ag were, for all samples, within background concentrations, except those of the Ogun River and the Owode Onirin, which showed significant enrichment of Cd, Zn, Cu,Pb and Ag, depletion to minimal enrichment for Bi, Mo and moderate enrichment for Pt. The contamination degree ranged between 1.25 and 143.79. The highest value was found at Owode Onirin and the lowest, at Igbonla 7. The geoaccumulation index showed that all the stream sediments ranged between practically uncontaminated to moderately to highly contaminated—with Pb, Sn, Zn, Cd, Cu, Cr, Zr and Ba. The potential ecological risk factor and environmental risk index(IER) showed that all of the samples were within the class of low to medium contamination risk, except samples from the Owode Onirin, which fell within the class of very high risk to extremely high risk respectively.

关键词：水系沉积物污染评价尼日利亚沿海地区电感耦合等离子体质谱法西南富集因子分析环境地球化学

Development and Evaluation of a Groundnut In-Shell Grader

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Agricultural Sciences 2015年第2期6卷 217-223页

作者： Adepoju B. Fashina Aminu Saleh fatai B. akande Department of Agricultural Engineering LadokeAkintola University of Technology Ogbomoso Nigeria National Centre for Agricultural Mechanization Ilorin Nigeria

Groundnuts marketed from farms are generally referred to as groundnuts in-shell. When freshly harvested, they may contain some dirt, vines and other foreign materials. Grades of these stocks are established based on intended use. Groundnut producers and commercial buyers use the grade as guidelines for trading. Grading aims at raising the quality and value of the product. Grading is generally limited to measurement of physical properties, such as, size distributions of the pods and percentage by weight of shelled kernels in the undecorticated groundnuts and percentage by weight of foreign materials. A groundnut grader was designed and developed. It was designed to sort three selected groundnut varieties commonly cultivated in Nigeria into three grades based on the geometric dimensions of the selected varieties. These varieties are SAMNUT 10, 14 and *** of grading trials indicate that while SAMNUT 10 exhibits the three grades, the other varieties (SAMNUT 14 and 18) can only be graded into two grades. The grader has a rated capacity of grading 224 th-1 of undercorticated pods. The maximum ranges within each grade when all the varieties were considered were: grade I—15.81 mm to 18.05 mm, grade II—12.44 mm to 15.78 mm and grade III—10.60 mm to 13.30 mm.

关键词： Groundnut In-Shell Grading Geometric Dimensions

Optimizing the defensive characteristics of mild steel via the electrodeposition of Zn-Si3N4 reinforcing particles

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Defence Technology（防务技术） 2019年第4期15卷 526-532页

作者： I.G. akande O.O. Oluwole O.S.I. Fayomi Department of Mechanical Engineering University of Ibadan Ibadan Oyo state Nigeria Department of Mechanical Engineering Covenant University ota ogun state Nigeria Department of Chemical Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South Africa

The effect of Zn-Si3 N4 deposition prepared via direct electrolytic co-deposition on mild steel was studied as a result its inherent vulnerability to corrosion in an aggressive environment and failure on the application of *** experiment was conducted varying the mass concentration of silicon nitride(Si3 N4)between 7 and 13 gat cell voltage of 0.3 and 0.5 V,at constant temperature of 45℃.The morphologies of the coated surfaces were characterized using high resolution Nikon Optical Microscope and Scanning Electron Microscope(SEM)revealing that the particles of the Zn-Si3 N4 were homogeneously *** corrosion behaviour was studied using potentiodynamic polarization technique in 3.65%NaCl solution and the microhardness was examined using Brinell hardness testing *** result of the corrosion experiment confirmed an improved corrosion resistance with a reduction in corrosion rate from 9.7425 mm/year to 0.10847 mm/year,maximum coating efficiency of 98.9%,maximum polarization resistance of 1555.3 Ω and a very low current density of 9.33 × 10-6A/*** negative shift in the Ecorr revealed the cathodic protective nature of the *** microhardness was also found to have increased from 137.9 HBN for the unmodified steel to a maximum value of 263.3 HBN for the0.5 Zn-13 Si3 N4 coated steel representing 90.9% increment in hardness as a result of the matrix grain refining and dispersion-strengthening ability of the incorporated Si3 N4 particles.

关键词： Polarization Corrosion Microhardness Coating Composite Matrix

Sedimentology and foraminiferal paleoecology of the exposed Oligocene-Miocene Ogwashi-Asaba Formation in Issele-Uku area,Anambra Basin,southern Nigeria:A paleoenvironmental reconstruction

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Journal of Palaeogeography 2022年第4期11卷 618-628页

作者： J.A.Adeoye V.O.Jolayemi S.O.akande Department of Geology and Mining Ibrahim Badamasi Babangida UniversityLapai 911101Niger StateNigeria Department of Geology and Mineral Sciences University of IlorinIlorin 240101Kwara StateNigeria

Sedimentological and foraminiferal paleoecological studies were carried out for the Oligocene-Miocene Ogwashi-Asaba Formation of the Anambra Basin at the Issele-Uku area in southern Nigeria,to reconstruct *** pattern of rock successions and textural characteristics suggest the prevalence of fluvio-deltaic setting during the formation of lignites and clastic rocks of Ogwashi-Asaba *** benthic foraminiferal species such as Ammotium sp.,Textularia sp.,Gavelinella sp.,Milliamina sp.,Reophax sp.,Bolivina sp.,Eponides sp.,Pseudobolivina *** Lenticulina *** the shale units whereas the planktonic forms are *** these species have very low population and diversity in the shales,which could be due to the presence of harsh conditions such as low oxygen level and scarcity of food,leading to poor *** assessments of benthic foraminifera's habitat suggest middle-to-inner neritic marine environment for the *** results suggest fluvial environment for the sandstone and deltaic for the *** Ogwashi-Asaba Formation in Issele-Uku area of Anambra Basin,southern Nigeria,therefore,have records of shallow marine,and fluvio-deltaic paleoenvironments.

关键词： Foraminiferal Sedimentology Ogwashi-Asaba Formation Anambra Basin Paleoecology

Performance evaluation of operational energy use in refurbishment, reuse, and conservation of heritage buildings for optimum sustainability

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Frontiers of Architectural Research 2016年第3期5卷 371-382页

作者： O.K. akande D. Odeleye, A. Coday C.Jimenez Bescos Department of Engineering & the Built Environment Anglia Ruskin University Chelmsford United Kingdom

The operational phase of a building project has increasingly gained importance with their energy performance becoming valuable and determining their operational excellence. In most heritage building projects （HBPs）, the operational energy use aspects are less considered, and a systematic way of analyzing their energy performance following project delivery is often lacking, The aim of this study is to evaluate the operational performance of refurbishment and reuse of UK listed church projects. The objective is to assess the operational energy use with a view to optimizing their sustafnabie performance. The methodology includes eight selected case study buildings refurbished and converted for multipurpose use. The case study approach provided qualitative insights into how the study contributes to a more structured requirements for energy management in HBPs with specific attention to energy-efficient building operations. The findings show the need to focus on fundamental areas of operational management （i.e. by developing and implementing more focused policy on operational energy performance of heritage buildings） to minimize the energy required to operate them. The challenges of implementing changes in operational energy performance improvement of heritage buildings are addressed in the form of recommendations that could Lead to real results. The study concludes that leveraging these areas requires commitment from all heritage building stakeholders because they all have substantial roles in harmonizing the requirement for the project＇s sustainability and not just the building operators. Meanwhile, baseline project planning, periodic updating, monitoring, and managing the energy use pattern are suggested as measures that could greatly facilitate better energy performance to optimizing their sustainable reuse compared with the traditional approach of trying to improve their thermal performance.

关键词： Heritage buildings Listed churches Operational energy Performance Refurbishment Sustainabitity

Determination of Airways Resistance, Volumetric Efficiency and Development of Ventilation Model of Rosh Pinah Zinc Mine Namibia

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Journal of Minerals and Materials Characterization and Engineering 2021年第2期9卷 194-205页

作者： Jeremia Kalenga Jide Muili akande Department of Mining and Metallurgical Engineering University of Namibia Ongwediva Namibia

A quantitative technique was conducted at Rosh Pinah Zinc mine, Namibia with its main purpose to determine airways resistance which is a function of the parameters;roughness of the airways and the friction factor. The 32 branch points (i.e. a-ag) that stand for ventilation circuit have been selected. Data collected includes, length and width of airways, air velocity;air density, and roughness of the airways which were used to determine coefficient of frictions, friction factors and airway resistances. A ventilation model was developed. In order to improve the current ventilation model, airways resistance of the mine was determined and simulated in a modified model using VentSimTM software. An average total airways resistance of 0.32027 Ns2/m8 has been achieved for Rosh Pinah mine. It should be pointed out that, as the mine advances its production faces deeper, this value would increases suddenly. Simulation revealed that as much as 34.4 m3/s of air can be received at the production faces, compared to the measured received amount of 19.3 m3/s. Therefore, volumetric efficiency of the mine was improved from 29.3% to 68.3%. It was also noticed that after importing the resistance values into the model together with other parameters, the model was greatly improved and no cause for concern.

关键词： Airways Resistance Volumetric Efficiency Friction Factor Simulations

Development of a tractor-pulled motion resistance test rig for traction studies on towed narrow wheels

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International Journal of Agricultural and Biological Engineering 2011年第4期4卷 21-27页

作者： D.Ahmad S.Shamsuddin A.B.Fashina F.B.akande Faculty of Engineering Universiti Putra Malaysia43400 UPM SerdangSelangorD.E.Malaysia Department of Agricultural Engineering Ladoke Akintola University of TechnologyOgbomosoNigeria

This work presents the development of a test rig(tractor pulled)for measurement of motion resistance of towed narrow wheels with a view to obtaining new design information to enhance the use of narrow wheels as traction members for low cost agricultural machines affordable by the low income earners or rural populace whose occupation is predominantly *** narrow wheels that can be used on the developed test rig are pneumatic bicycle wheels of different sizes,rigid bicycle wheel,motorcycle wheel and lugged-rigid wheel for a planting *** towing force which is equal to the motion resistance will be measured by the Mecmesin Basic Force Gauge(BFG)with a maximum capacity of 2.5 kN installed on the test *** gauge is connected to a notebook with a Dataplot program to record the towing force and import the measured force per unit time to the spread sheet for further *** test rig comprises two parts,one part holding the wheel and the second part hitched to the tractor,in between the two is the BFG to measure the towing force and it is RS-232 interfaced to notebook *** test rig is designed for field use on different terrains to make comparison and obtain enough data to assist in the design and development of narrow wheel agricultural *** effect of the different wheel sizes,axle loads and inflation pressures on the motion resistance of the test wheels can be investigated easily using the developed test rig.

关键词： motion resistance traction wheels basic force gauge data acquisition tire design parameters

Effects of Machine Parameter and Natural Factors on the Productivity of Loading and Haulage Equipment

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Journal of Minerals and Materials Characterization and Engineering 2018年第1期6卷 139-153页

作者： Martin Itoolwa Kulula Jide Muili akande Department of Mining and Metallurgical Engineering University of Namibia Windhoek Namibia

The purpose of this research is to investigate the factors which affect the performance of the loading and hauling equipment at Skorpion zinc mine, Namibia and also to find possible solutions to eliminate them, so that the weekly Zinc Oxide and ex-pit waste tonnages required could be produced. This is due to the high demand of Zinc on the market. The investigation on road conditions was focused on the effects of rolling resistance, grade resistance and road widths from the road between bench 540 in pit 103 to the Zinc oxide medium grade stockpile. Cycle time data were obtained by time and motion study of the load/haul/dump cycle from bench 540 loading site to the stockpile. The data used for equipment matching by queuing theory (excel modelling) was obtained when the loaders where loading Arkose at different loading sites. The effects of different weather conditions i.e. mist, rain and wind on production where determined by collecting actual shift production tonnages and comparing with target shift production targets during this conditions. The results produced from time and motion studies show that the haul trucks have an average availability of 80.4% and utilization at 49.7% which are very low when compared to the benchmark value of 89% and 69% for availability and utilization respectively. Decline in performance time is caused by factors such as daily safety meetings, lunch breaks, blasting, tools break down and the daily machine service. Rolling resistance is also one of the factors affecting production time at the mine. The rolling resistance of different segments was determined by roughness defect scores (RDS). From calculations, it is clearly seen that if the RR could be reduced to 2% on every road segment, then each cycle period per truck can be reduced by 1.24 minutes. This will increase the production of the haulers and decrease the operating cost. It was recommended that the wearing course of the road surface be treated with a bitumen based dust suppressi

关键词： Utilization Rolling Resistance Productivity Equipment Matching Uniaxial Compressive Strength Weather Conditions