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Optimizing Fully Convolutional Encoder-Decoder Network for Segmentation of Diabetic Eye Disease

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Computers, Materials & Continua 2023年第11期77卷 2481-2504页

作者： abdul Qadir Khan Guangmin Sun Yu Li Anas Bilal Malik abdul manan Faculty of Information Technology Beijing University of TechnologyBeijing100124China College of Information Science Technology Hainan Normal UniversityHaikou571158China

In the emerging field of image segmentation,Fully Convolutional Networks(FCNs)have recently become ***,their effectiveness is intimately linked with the correct selection and fine-tuning of hyperparameters,which can often be a cumbersome manual *** main aim of this study is to propose a more efficient,less labour-intensive approach to hyperparameter optimization in FCNs for segmenting fundus *** this end,our research introduces a hyperparameter-optimized Fully Convolutional Encoder-Decoder Network(FCEDN).The optimization is handled by a novel Genetic Grey Wolf Optimization(G-GWO)*** algorithm employs the Genetic Algorithm(GA)to generate a diverse set of initial *** leverages Grey Wolf Optimization(GWO)to fine-tune these positions within the discrete search *** on the Indian Diabetic Retinopathy Image Dataset(IDRiD),Diabetic Retinopathy,Hypertension,Age-related macular degeneration and Glacuoma ImageS(DR-HAGIS),and Ocular Disease Intelligent Recognition(ODIR)datasets showed that the G-GWO method outperformed four other variants of GWO,GA,and PSO-based hyperparameter optimization *** proposed model achieved impressive segmentation results,with accuracy rates of 98.5%for IDRiD,98.7%for DR-HAGIS,and 98.4%,98.8%,and 98.5%for different sub-datasets within *** results suggest that the proposed hyperparameter-optimized FCEDN model,driven by the G-GWO algorithm,is more efficient than recent deep-learning models for image segmentation *** thereby presents the potential for increased automation and accuracy in the segmentation of fundus images,mitigating the need for extensive manual hyperparameter adjustments.

关键词： Diabetic eye disease image segmentation deep learning artificial intelligence grey wolf optimization FCN CNN

Phase microstructure evaluation and microwave dielectric properties of (1-x)Mg_(0.95)Ni_(0.05)Ti_(0.98)Zr_(0.02)O_3–xCa_(0.6)La_(0.8/3)TiO_3 ceramics

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Journal of Advanced Ceramics 2018年第1期7卷 72-78页

作者： abdul manan Zahid ULLAH Arbab Safeer AHMAD Atta ULLAH Dil Faraz KHAN Arshad HUSSAIN Mati Ullah KHAN Laboratory for Research in Advanced Materials Department of Physics University of Science and TechnologyBannu Department of Physics Islamia College State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Department of Chemistry University of Science and Technology Department of Physics Kohat University of Science and Technology

All the compositions in the(1-x)Mg_(0.95)Ni_(0.05)Ti_(0.98)Zr_(0.02)O_3–xCa_(0.6)La_(0.8/3)TiO_3(0 ≤ x ≤ 0.2) series were fabricated using solid state sintering route. Mg_(0.95)Ni_(0.05)Ti_(0.98)Zr_(0.02)O_3 possessed excellent microwave dielectric properties with ε_r ≈ 17.1, Q_uf_0 ≈ 195855 GHz, and τ_f ≈-46 ppm/℃. t f was tuned through zero by mixing with Ca_(0.6)La_(0.8/3)TiO_3. In the present study, τ_f ≈-2 ppm/℃ with er ≈ 23.9 and high Q_uf_0 ≈ 115870 GHz was achieved for x = 0.15, i.e., for a mixture of 85% Mg_(0.95)Ni_(0.05)Ti_(0.98)Zr_(0.02)O_3–xCa_(0.6)La_(0.8/3)TiO_3.

关键词： phase microstructure density ilmenite structure

Genetic variability for yield and fiber related traits in genetically modified cotton

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Journal of Cotton Research 2021年第3期4卷 219-228页

作者： SAHAR Adeela ZAFAR Muhammad Mubashar RAZZAQ abdul manan abdul HAROON Muhammad SAJID Sunaina REHMAN abdul MO Huijuan ASHRAF Muhammad REN Maozhi SHAKEEL Amir YUAN Youlu Department of Plant Breeding and Genetics University of AgricultureFaisalabadPakistan Institute of Cotton Research Chinese Academy of Agricultural SciencesAnyang 455000China Institute of Molecular Biology and Biotechnology The University of Lahore-PakistanLahorePakistan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanChina Zhengzhou Research Base State Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhouChina.

Background:Cotton(Gossypium hirsutum L.)is grown for fiber and oil purposes in tropical and sub-tropical areas of the *** is the 4th largest producer of *** has a significant contribution in the GDP of ***,the present study was performed to assess the genetic variations and genetic diversity of yield and fiber quality traits in cotton and to analyze the associations present among ***:Analysis of variance exhibited significant variation for all studied traits except total number of nodes and the height to node *** phenotypic coefficient of variation was higher than the genotypic coefficient of variation for all studied *** height,monopodial branches,total number of bolls,lint index,seed index,and seed cotton yield displayed high heritabilities in a broad sense with maximum genetic *** analysis revealed that seed cotton yield had a significant positive association with plant height,the nu mber of monopodial branches,the nu mber of sympodia I branches,ginning outturn(GOT),the number of bolls,seed per boll,seed index,uniformity index,the number of sympodial branches,reflectance,and seed index at the genotypic level while a significant positive relationship was observed with plant height,the number of sympodial branches,boll number,and *** height,monopodial branches,GOT,boll weight,seeds per boll,and short fiber index exerted direct positive effects on seed cotton *** first 6 principal component analysis(PCs)out of the total fourteen PCs displayed eigenvalues(>1)and had maximum share to total variability(82.79%).The attributes that had maximum share to total divergence in eluded plant height,uniformity index,the nu mber of sympodial branches,seed per boll,GOT,seed cotton yield,and short fiber ***:The genotype AA-802,IUB-13,FH-159,FH-458,and CIM-595 were genetically diverse for most of the yield and fiber quality traits and could be utilized for the selection of better perform

关键词： Upland cotton Fiber trait Cotton yield Genetic variability Yield components

Multi-enzymes Production Studies in Single Tray Solid State Fermentation with Opened and Closed System

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Journal of Life Sciences 2016年第7期10卷 342-356页

作者： Musaalbakri abdul manan Colin Webb Biotechnology and Nanotechnology Research Centre Malaysian Agricultural Research and Development Institute (MARDI) Persiaran MARDI-UPM 43400 Serdang Selangor Malaysia School of Chemical Engineering and Analytical Science The University of Manchester Oxford Road Manchester M13 9PL United Kingdom

The robustness ofA. awamori and A. oryzae as enzyme producers is exploited in fungal fermentation on agricultural solid waste. High-level production of extracellular glucoamylase, protease, cellulase and xylanase has been achieved. Three different types of ＇waste＇ solids （wheat bran, soybean hulls and rapeseed meal） have been used in studies of solid state fermentation （SSF）. The enzymes could be produced in significant levels by continuously supplying oxygen （02） through the tray system known as ＂closed＂ and ＂opened＂ tray systems. A perforated tray system was developed in this study that permits direct access to 02. Testing the tray system with different perforated mesh aperture sizes in this study did not yield different results in growth performance of A. awamori and A. oryzae. A. awamori and A. oryzae can be very versatile in producing various enzymes with different substrates with different starch, protein, hemiceilulose and cellulose contents. These studies indicate that A. awamori is more suitable for the efficient production of multiple enzymes in the closed system including xylanase and cellulase, while the production of glucoamylase and protease is superior in the opened system. A. oryzae is more suitable for the efficient production of protease and cellulase in the closed system, while the production of protease is more favourable the opened system. A. awamori efficiently consumed starch in wheat bran medium and produced very high glucoamylase activity, and after that, the fungus efficiently produced other enzymes to degrade other complex nutrients such as protein, hemicellulose and cellulose. Meanwhile, A. oryzae efficiently consumed protein in rapeseed meal and produced very high protease activity. The ability of both filamentous fungi, to convert biomass through SSF bioconversion will have a great impact on food and agro-industry in every aspect of life from food and medicine to fuel.

关键词： Tray system solid state fermentation Aspergillus awamori Aspergillus oryzae glucoamylase protease xylanase cellulase.

Water Retention Value： A Study Model-based by Asperglillus awamori and Aspergillus oryzae Embrace Three Models of Solid Substrate

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Journal of Life Sciences 2016年第8期10卷 420-429页

The goal of this study was to evaluate the water retention value （WRV） of a test solid substrate and a fungal cell in solid state fermentation （SSF）. WRV is the ratio of the weight of water retained after centrifugation under specific conditions by a wet sample to the oven dry weight of the same sample. SSF refers to the microbial fermentation, which takes place in the absence or near absence of free water, thus being close to the natural environment. Many factors are involved in a successful SSF process. In addition to biological parameters, the SSF process is also dependent on physical factors such as WRV. A centrifugal technique has been modified and applied to the evaluation of WRV. Wheat bran, soybean hulls and rapeseed meal were used as model substrate. Aspergillus awamori and Aspergillus oryzae were used as model microorganism. Results revealed that the ability of wheat bran to retain water in the solid substrate is 56% higher than that of soybean hulls and rapeseed meal. In the term of fungal cell, the ability of A. oryzae to retain water in the cells was higher （73% higher） than that ofA. awamori. In addition, through oven method moisture content loss from A. awamori is 46% higher than that from A. oryzae during drying process. Nevertheless, it can be seen that A. oryzae is able to retain water content about 5 times higher than A. awamori. Through this results, we found that WRV varies depending on solid substrates and microorganisms. This initial information can be beneficial in the SSF process to be carried out.

关键词： Water retention value (WRV) solid state fermentation solid substrates Aspergillus awamori Aspergillus oryzae

Imperatives for Academia-Industry Collaboration in Building Construction Research in Ghana

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Journal of Building Construction and Planning Research 2018年第4期6卷 185-197页

作者： David Mbabil Dok Yen Emmanuel Adinyira abdul manan Dauda Department of Building Technology Tamale Technical University Tamale Ghana Department of Building Technology Kwame Nkrumah University of Science and Technology Kumasi Ghana

Academia and industry research enables researchers to conduct research projects that are more relevant to current business practices and context. Although, several construction research works have been done by the academics in the tertiary institutions in Ghana, it is sad to know that, a large number of these research works have not moved from the pure stage to the applied stage. This study seeks to establish the imperative of academia and industry collaboration in building research in Ghana. A total of 116 construction practising professionals consisting of Ghana Institute of Construction (GIOC) corporate members (QS, Architects, Engineers and so on) from the industry, and academics from tertiary academic institutions (That’s, Lecturers from KNUST and UEW) that run postgraduate construction programmes in Ghana as at February 2016 constituted the respondents for this study. Census and systematic sampling techniques were used for the sampled population. Descriptive statistics was employed in the data analysis for the mean and standard deviation (SD) score values of variables. The most imperatives for academia and industry collaboration were found to be: ensuring research findings solve socio-economic and development problems, the intermittent collapse of buildings, support for the local industries to produce quality materials locally to feed the construction industry, proper contract documentations and administration. This research would bring to light the urgent issues in the construction industry that calls for greater collaboration between the academia and industry in Ghana. It reveals a deeper understanding on the need for collaborative research in the Ghanaian construction industry, by providing the most imperatives to academia-industry collaborative research in Ghana.

关键词： Imperatives Academia and Industry Collaboration Building Construction Research Ghana

Grain boundary effects on piezoelectric properties of the core–shell-structured BaTiO_(3)@TiO_(2) ceramics

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Journal of Advanced Dielectrics 2018年第6期8卷 118-126页

作者： Xixi Li Zhonghua Yao Juan Xie Zongxin Li Hua Hao Minghe Cao Amjad Ullah Atta Ullah abdul manan Hanxing Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and Engineering Wuhan University of Technology Wuhan 430070P.R.China Department of Physics University of Science and Technology BannuKPKPakistan

Grain boundary effect on BaTiO_(3) has been widely investigated for several ***,all of them tailored the grain boundary by grain size of BaTiO_(3).In this case,a direct way was introduced to modify the grain boundary by coating technique to investigate the role of grain boundary in ferroelectric *** phase TiO_(2) was employed to investigate grain boundary effects on the electrical properties of BaTiO3 piezoelectric ***_(2) coating can result in the reduction of piezoelectric and ferroelectric properties and the annealing process in oxygen can increase piezoelectric behavior of pure BaTiO3 due to valence state of Ti ions while that remains for Ti-modified composition possibly due to the increased grain boundary effect by impedance *** with ferroelectric grain,grain boundary plays a critical role to impact the electrical properties of perovskite-type ferroelectric materials.

关键词： Piezoelectric properties ferroelectric properties BaTiO3 and titanates defects

High energy storage density with ultra-high efficiency and fast charging-discharging capability of sodium bismuth niobate lead-free ceramics

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Journal of Advanced Dielectrics 2021年第4期11卷 37-45页

作者： abdul manan Maqbool Ur Rehman Atta Ullah Arbab Safeer Ahmad Yaseen Iqbal Ibrahim Qazi Murad Ali Khan Hidayat Ullah Shah Arshad Hussain Wazir Laboratory for Research in Advanced Materials Department of Physics University of Science and Technology BannuTownship Bannu 28100 Khyber PakhtunkhwaPakistan Center for Material Science Islamia College Peshawar Peshawar25120 Khyber PakhtunkhwaPakistan Materials Research Laboratory Department of Physics University of Peshawar25120 KPPakistan§Department of Materials Science and EngineeringInstitute of Space Technology Islamabad44000 IslamabadPakistan Department of Chemistry University of Science and Technology Bannu 28100 Khyber PakhtunkhwaPakistan

Ceramics-based capacitors with excellent energy storage characteristics,fast charging/discharge rate,and high efficiency have received significant *** this work,Na0.73Bi0.09NbO3(NBN)ceramics were processed through solid-state sintering *** investigated ceramics were crystallized in a single perovskite *** microstructure,with small average grain size(~0.92 mm)is obtained for the investigated ceramics.A high dielectric constant>1000 accompanied by a low dielectric loss was achieved for these ceramics at ambient temperature.A recoverable energy density~0.92 J/cm3 and ultra-high efficiency of 96.33%at 138 kV/cm were obtained at room ***,a lower discharging time of 0.14 ms was also *** material is a suitable candidate for power pulsed applications.

关键词： Polarization energy density capacitor efficiency

Roadside Vertical Axis Wind Turbine (VAWT): An Effective Evolutionary Design for Australian Highway Commuters with Minimum Dynamic Stall

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Engineering（科研） 2020年第9期12卷 601-616页

作者： Assies Ahmad Adil Loya Muhammad Ali Ammar Iqbal Faiq Masood Baig abdul manan Afzal Department of Engineering University of Technology Sydney Australia Department of Mechatronics Engineering PAF Karachi Institute of Economics and Technology Karachi Pakistan Department of Mechanical Engineering COMSATS University Islamabad Sahiwal Campus Sahiwal Pakistan Department of Automotive Engineering University of Engineering and Technology Lahore Campus Lahore Pakistan

There are multiple approaches of design for Vertical Axis Wind Turbines (VAWT) that have been studied by engineers and leaps have been made in high performing innovations. By harnessing the energy from these wind turbines, the problem of roadside lights shortage can be solved. This can help to prevent the accidents while providing clean energy. The importance of coastal areas like Australian beaches regarding wind turbines cannot be neglected as a higher number of people like to live near coastal vicinity. Also, most of the freeways in Australia expand across the sea. In this paper, one such design has been analyzed to implement across the highways. But still with many advancements in technology, an immense gap is present in the research of implementation of VAWTs. The design discussed in the current study is a VAWT which can be installed on the side of the highway roads to provide clean and cheap energy for illuminating the roads. Computational Fluid Dynamics (CFD) was conducted on the blades of the turbine to analyze its performance under operating conditions. Furthermore, the paper elaborates the generation of drag and lift on the blades of the turbine. A wind speed of 60 km/h just produced 6.1 N force on the turbine blades as a result of drag. The cost analysis showed the cheap production of such mechanism that can provide longer service when installed.

关键词： Aerodynamics Computational Fluid Dynamics Vertical Axis Wind Turbine Finite Elemental Analysis Simulations