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Tigris River Water Quality Quantifying Using the Iraq Water Quality Index (IraqWQI) and Some Statistical Techniques

Engineering（科研） 2024年第6期16卷 149-166页

作者： Nadhir Al-Ansari Salam Hussein Ewaid Ali Chabuk Salwan Ali abed Mudhafar A. Salim Jan Laue Riyadh M. Salih Department of Civil Environmental and Natural Resources Engineering Lule University of Technology Lule Sweden Technical College of Shatra Southern Technical University Basra Iraq Department of Environmental Engineering College of Engineering University of Babylon Babylon Iraq Department of Environment College of Science University of Al-Qadisiyah Diwaniyah Iraq Iraqi Organization for Conservation of Nature IOCN Baghdad Iraq National Center for Water Resources Management Ministry of Water Resources Baghdad Iraq

Evaluation of water quality is important for the management of water resources. The current study is focused on the interpretation of the water quality monitoring data of the Tigris River in Iraq by the application of the principal component analysis (PCA), cluster analysis (CA), and water quality index (WQI). Twelve water quality parameters were taken from 14 stations along the river Ca2+, Mg2+, Na+, K+, Cl−, SO42−, HCO3−, NO3−, TH, TDS, BOD5, and EC to apply the PCA and CA. The results show that the mean of all the parameters was under the standards except Ca2+, EC, Mg2+, TH, and SO42−. The amount of EC is the critical factor that affects the river water quality. The PCA obtained one principal component responsible for 97% of the variation caused by different pollution sources. The CA divided the river into three regions of sampling stations with similar water quality, the best in the north, and the worst in the far south. In this paper, the computer-automated tool (IraqWQI) was presented and evaluated, which has been developed by authors to classify and measure the quality of Iraqi surface water. The proposed index is of hundred degrees and includes six variables for drinking water quality Cl−, TH, TDS, COD, DO, and total coliform (TC) according to the Iraqi specifications. The result of the IraqWQI application showed a decrease in the water quality of the river and its suitability for drinking in the south of the country. The best value of the index was (81.48, Good) in Fishkhabour during winter, and the worst value was (46.23, Bad) in Qurnah during summer. The result of this study proved the success and importance of using statistical techniques and WQI as useful tools for the management, control, and conservation of surface water. .

关键词： Component Formatting Style Styling

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Computer Vision Technology for Fault Detection Systems Using Image Processing

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Computers, Materials & Continua 2022年第10期73卷 1961-1976页

作者： abed Saif Alghawli Computer Science Department Prince Sattam Bin Abdulaziz UniversityAflajKingdom of Saudi Arabia

In the period of Industries 4.0,cyber-physical systems(CPSs)were a major study *** systems frequently occur in manufacturing processes and people’s everyday lives,and they communicate intensely among physical elements and lead to *** to the magnitude and importance of the systems they support,the cyber quantum models must function *** this paper,an image-processing-based anomalous mobility detecting approach is suggested that may be added to systems at any *** expense of glitches,failures or destroyed products is decreased when anomalous activities are detected and unplanned scenarios are *** presently offered techniques are not well suited to these operations,which necessitate information systems for issue treatment and classification at a degree of complexity that is distinct from *** overcome such challenges in industrial cyber-physical systems,the Image Processing aided Computer Vision Technology for Fault Detection System(IM-CVFD)is proposed in this *** Uncertainty Management technique is introduced in addition to achieving optimum knowledge in terms of latency and effectiveness.A thorough simulation was performed in an appropriate processing *** study results suggest that the IM-CVFD has a high performance,low error frequency,low energy consumption,and low delay with a strategy that *** comparison to traditional approaches,the IM-CVFD produces a more efficient outcome.

关键词： Cyber-physical system image processing computer vision fault detection

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Finite-Time and Fixed-Time Synchronization of Inertial Neural Networks with Mixed Delays

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Journal of Systems Science & Complexity 2021年第1期34卷 206-235页

作者： CHAOUKI Aouiti EL abed Assali University of Carthage Faculty of Sciences of BizertaDepartment of MathematicsResearch Units of Mathematics and Applications UR13ES477021 ZarzounaBizertaTunisia

This paper considers the drive-response synchronization in finite-time and fixed-time of inertial neural networks with time-varying and distributed delays(mixed delays). First, by constructing a proper variable substitution, the original inertial neural networks can be rewritten as a first-order differential system. Second, by constructing Lyapunov functions and using differential inequalities,some new and effective criteria are obtained for ensuring the finite-time synchronization. Finally, three numerical examples are also given at the end of this paper to show the effectiveness of the results.

关键词： Finite-time synchronization fixed-time synchronization inertial neural networks infinitetime distributed delays time-varying delays

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Optimal Day-ahead Dynamic Pricing of Grid-connected Residential Renewable Energy Resources Under Different Metering Mechanisms

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Journal of Modern Power Systems and Clean Energy 2023年第1期11卷 168-178页

作者： Kimia Parandeh abed Bagheri Shahram Jadid Center of Excellence for Power System Automation and Operation School of Electrical EngineeringIran University of Science and Technology(IUST)TehranIran

Nowadays,grid-connected renewable energy resources have widespread applications in the electricity ***,providing household consumers with photovoltaic(PV)systems requires bilateral interfaces to exchange energy and *** addition,residential consumers’contribution requires guaranteed privacy and secured data *** dynamic pricing is one of the incentive-based demand response methods that has substantial effects on the integration of renewable energy resources with smart grids and social *** metering mechanisms of renewable energy resources such as feed-in tariffs,net metering,and net purchase and sale are important issues in power grid operation *** this paper,optimal condition decomposition method is used for dayahead dynamic pricing of grid-connected residential renewable energy resources under different metering mechanisms:feed-intariffs,net metering,and net purchase and sale in conjunction with carbon emission *** to the stochastic nature of consumers’load and PV system products,uncertainties are considered in a two-stage decision-making *** results demonstrate that the net metering with the satisfaction average of 68%for consumers and 32%for the investigated electric company leads to 28%total load *** the case of net purchase and sale mechanism,a satisfaction average of 15%for consumers and 85%for the electric company results in 11%total load *** feed-in-tariff mechanism,in spite of increased social welfare,load reduction does not take place.

关键词： Dynamic pricing renewable energy resources feed-in-tariffs net metering net purchase and sale stochastic decision-making

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Optimization of Bio-Implantable Power Transmission Efficiency Based on Input Impedance

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Computer Systems Science & Engineering 2021年第7期38卷 17-24页

作者： Bassm H.abed Jaber H.Majeed Najma abed Habeeb University of Technology Department of Electrical EngineeringBaghdadIraq Almansour University College Communication Engineering DepartmentBaghdadIraq

Recently,the inductive coupling link is the most robust method for powering implanted biomedical devices,such as micro-system stimulators,cochlear implants,and retinal *** research provides a novel theoretical and mathematical analysis to optimize the inductive coupling link efficiency driven by efficient proposed class-E power amplifiers using high and optimum input *** design of the coupling link is based on two pairs of aligned,single-layer,planar spiral circular coils with a proposed geometric dimension,operating at a resonant frequency of 13.56 *** transmitter and receiver coils are small in *** device resistance varies from 200Ωto 500Ωwith 50Ωof *** the conventional load resistance of power amplifiers is 50Ω,the efficiency is 45%;when the optimum resonant load is 41.89Ωwith a coupling coefficient of 0.087,the efficiency increases to 49%.The efficiency optimization is reached by calculating the matching network for the external LC tank of the transmitter *** proposed design may be suitable for active implantable devices.

关键词： Inductive coupling link power amplifier matching network implantable biomedical devices

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Ballistic behavior of plain and reinforced concrete slabs under high velocity impact

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Frontiers of Structural and Civil Engineering 2020年第2期14卷 299-310页

作者： Chahmi OUCIF Luthfi Muhammad MAULUDI Farid abed Institute of Structural Mechanics Bauhaus-Universitat WeimarWeimar D-99423Germany Teknik Sipil Politeknik Negeri BandungGegerkalong Hilir Ds.CiwarugaBandung 40012Indonesia Department of Civil Engineering American University of SharjahSharjah 26666United Arab Emirates

This work presents a numerical simulation of ballistic penetration and high velocity impact behavior of plain and reinforced concrete *** this paper,we focus on the comparison of the performance of the plain and reinforced concrete slabs of unconfined compressive strength 41 MPa under ballistic *** concrete slab has dimensions of 675 mm x 675 mm x 200 mm,and is meshed with 8-node hexahedron solid elements in the impact and outer *** ogive-nosed projectile is considered as rigid element that has a mass of 0.386 kg and a length of 152 *** applied velocities vary between 540 and 731 m/s.6 mm of steel reinforcement bars were used in the reinforced concrete *** constitutive material modeling of the concrete and steel reinforcement bars was performed using the Johnson-Holmquist-2 damage and the Johnson-Cook plasticity material models,*** analysis was conducted using the commercial finite element package Abaqus/*** diameters and residual velocities obtained by the numerical model were compared with the experimental results and effect of steel reinforcement and projectile diameter were *** validation showed good agreement between the numerical and experimental *** added steel reinforcements to the concrete samples were found efficient in terms of ballistic resistance comparing to the plain concrete sample.

关键词： Johnson-Holmquist-2 Johnson-Cook reinforced concrete damage impact loads

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Global Exponential Convergence of Neutral Type Competitive Neural Networks with D Operator and Mixed Delay

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Journal of Systems Science & Complexity 2020年第6期33卷 1785-1803页

作者： AOUITI Chaouki ASSALI El abed BEN GHARBIA Imen University of Carthage Faculty of Sciences of BizertaDepartment of MathematicsResearch Units of Mathematics and Applications UR13ES477021 ZarzounaBizertaTunisia

The models of competitive neural network(CNN)was in recent past proposed to describe the dynamics of cortical cognitive maps with unsupervised synaptic modifications,where there are two types of memories:Long-term memories(LTM)and short-term memories(STM),LTM presents unsupervised and slow synaptic modifications and STM characterize the fast neural *** paper is concerned with a class of neutral type CNN’s with mixed delay and D *** employing the appropriate differential inequality theory,some sufficient conditions are given to ensure that all solutions of the model converge exponentially to zero ***,an illustrative example is also given at the end of this paper to show the effectiveness of the proposed results.

关键词： Competitive neural networks D operator exponential convergence neutral type delay

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A modified gas flow model in the near wellbore region below dew point pressure

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Petroleum 2021年第3期7卷 294-302页

作者： abed Inan Chowdhury Md Mostafijul Karim Department of Petroleum and Mining Engineering Chittagong University of Engineering&TechnologyChittagongBangladesh

When pressure in gas reservoirs fall below the dew point,condensate banking occurs around the wellbore which alters the fluid flow *** state of the knowledge on this flow behavior is yet not fully-developed;which leads to severe problems in *** this study,the Al-Hussainy,Ramey,and Crawford Solution Technique has been modified to accurately resemble the real gas flow behavior for this ***,a primary investigation was conducted to observe the severity of the problem in three condensate banked *** this study involved Constant Composition Expansion tests for determining the dew point,Prode Properties software for modeling the reservoir fluid properties,Flowing Material Balance(or Dynamic P/Z Material Balance)for identifying the pressure distribution of the selected *** real field data along with the determined(analytical,computational,and experimental)data were incorporated to check the validity of the *** modification proposes a Dimensionless Correction Factor(CD)for any condensate banked reservoir and identifies parameters such as the Perforation Factor(Pf)and Heterogeneity Factor(n).It is found that the Modified Al-Hussainy,Ramey,and Crawford Solution Technique successfully models the actual flow characteristics of the stated condition.

关键词： Condensate banking Effective permeability Gas flow modeling Model fitting

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Imprinting in Plants and Its Underlying Mechanisms

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Journal of Genetics and Genomics 2013年第5期40卷 239-247页

作者： Hongyu Zhang abed Chaudhury Xianjun Wu Rice Research Institute of Sichuan Agricultural University P.O.and Village Hazipur Dt.MoulvibazarBangladesh

Genomic imprinting（or imprinting） refers to an epigenetic phenomenon by which the allelic expression of a gene depends on the parent of *** has evolved independently in placental mammals and flowering *** plants,imprinting is mainly found in endosperm. Recent genome-wide surveys in Arabidopsis,rice,and maize identified hundreds of imprinted genes in *** these genes are of diverse functions,endosperm development is regulated at different regulatory *** imprinted expression of only a few genes is conserved between Arabidopsis and monocots,suggesting that imprinting evolved quickly during *** Arabidopsis,DEMETER （DME） mediates hypomethylation in the maternal genome at numerous loci（mainly transposons and repeats） in the central cell and results in many differentially methylated regions between parental genomes in the endosperm,and subsequent imprinted expression of some *** addition,histone modification mediated by Polycomb group（PcG） proteins is also involved in regulating ***-induced hypomethylated alleles in the central cell are considered to produce small interfering RNAs（siRNAs） which are imported to the egg to reinforce DNA *** parallel,the activity of DME in the vegetative cell of the male gametophyte demethylates many regions which overlap with the demethylated regions in the central *** from the demethylated regions are hypothesized to be also transferred into sperm to reinforce DNA *** is partly the result of genome-wide epigenetic reprogramming in the central cell and vegetative cell and evolved under different selective pressures.

关键词： DNA methylation Imprinting Polycomb group Endosperm Small RNA

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Development of processing map for InX-750 superalloy using hyperbolic sinus equation and ANN model

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Rare Metals 2021年第12期40卷 3598-3607页

作者： Saeed Aliakbari Sani Ali Khorram abed Jaffari Golamreza Ebrahimi School of Metallurgy and Materials Engineering Iran University of Science and TechnologyNarmakTehran 16846-13114Iran Department of Mechanical Engineering KNToosi University of TechnologyTehran 19395-1999Iran Department of Material and Metallurgy Engineering Iran University of Industries and Mines(IUIM)Tehran 19537-65733Iran Materials and Polymers Engineering Department Faculty of EngineeringHakim Sabzevari UniversitySabzevar 96179-76487Iran

The aim of this study is to develop processing maps based on two models and compare them with conventional processing *** hyperbolic sinus constitutive equation and artificial neural network(ANN)approaches were used in this investigation to predict flow stress and to develop processing maps in various *** hot compression tests of InX-750 superalloy were carried out above the gamma prime phase temperature and within the temperature range of 1000-1150℃and strain rate of 0.001-1.000 s^(-1).The processing maps were conducted based upon dynamic material model(DMM)for data by experimental,constitutive equation and ANN *** processing maps drawn by either of the prediction methods show that the method developed by ANN data does not significantly differ from the experimental processing *** ANN approach is thus a suitable way to predict the flow stress as well as hot working processing map of engineering metals and materials.

关键词： Hot deformation Hyperbolic sine equation ANN model Prediction Processing map

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