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Choroidal thickness measurements in young Saudi adult population: a cross-sectional study

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International Journal of Ophthalmology(English edition) 2023年第11期16卷 1814-1819页

作者： mohammed m Althomali Ahmed A Alharbi Nouf m Albnayan Abdulaziz m Alkhudhair muteb K Alanazi Optometry Department College of Applied Medical SciencesKing Saud UniversityRiyadh 11362Saudi Arabia

AIm:To determine the choroidal thickness(CT)in young healthy Saudi adults using spectral-domain optical coherence tomography(SD-OCT)with an automated CT segmentation ***:Fifty-eight young adults(total of 116 eyes),39 males and 19 females participated in this study between the ages of 18 and 38y(mean 22.65±3.9y).All participants underwent ophthalmic screening examination,including the SD-OCT for measurements of CT in each quadrant egmented into five eccentric regions starting from the foveal region up to 4.5 mm towards the ***:The choroid was thickest in the foveal region(central 1 mm,300±60μm)and began to progressively thinner beyond the parafovea(1.5–2.5 mm,284±67μm)towards the peripheral region(3.5–4.5 mm from the fovea,254±83μm).The superior choroid showed the thickest profile(309±57μm),while the nasal choroid exhibited the thinnest(229±76μm).The rate of the thinning with increasing eccentricity was more predominant in the nasal choroid,which thinned from the foveal region(294±58μm)to the peripheral region(158±55μm).The superior and inferior choroid did not show a statistically significant thinning with eccentricity(all P>0.05).There was no statistically significant difference in the CT between gender,age,and laterality of the eyes(all P>0.05).A significant association of myopia with thinner subfoveal choroid was observed(Pearson’s,r=0.37),and regression analysis showed that a 10.3μm choroidal thinning for each diopter increase of ***:CT profile depends on eccentric and the *** CT profile across the measured area in the young Saudi adult population is comparable to other previous *** error is critical for CT evaluation.

关键词： choroidal thickness optical coherence tomography young adults Saudi population

Evaluation of Shell and Tube Heat Exchanger Performance by Using ZnO/Water Nanofluids

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Journal of Harbin Institute of Technology(New Series) 2023年第6期30卷 62-69页

作者： Hussein Hayder mohammed Ali Adnan m Hussein Kadum mohammed Hussain Allami Barhm mohamad Technical Engineering College/Kirkuk Northern Technical UniversityKirkuk 36001Iraq Computer Engineering Techniques Department Al-Kitab UniversityKirkuk 36001Iraq Department of Petroleum Technology Koya Technical InstituteErbil Polytechnic UniversityErbil 44001Iraq

To examine and investigate the impact of nanofluid on heat exchanger performance,including the total heat transfer,the effect of friction factor,the average Nusselt number,and the thermal efficiency,the output heat transfers of a shell and tube heat exchanger using ZnO nanoparticles suspended in water has been conducted *** governing equations were solved using finite volume techniques and CFD simulations with ANSYS/FLUENT Solver *** nanoparticles volume fractions adopted are 0.2%and 0.35%that used in numerical computations under 200 to 1400 Reynolds numbers *** increasing of temperature is approximately 13%from the bottom to the top of heat exchanger,while the maximum enhancement of Nusselt number is about 10%,19%for volume fractions 0.2%and 0.35%*** elevated values of the friction factor at the volumetric ratios of 0.2%and 0.35%are 0.25%and 0.47%*** findings demonstrate that the performance efficiency of shell and tube heat exchanger is enhanced due to the increase in Nusselt number.

关键词： CFD Reynold number thermal efficiency Nusselt number nanofluid heat exchanger

Pythagorean Neutrosophic Planar Graphs with an Application in Decision-making

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Computers, materials & Continua 2023年第6期75卷 4935-4953页

作者： P.Chellamani D.Ajay mohammed m.Al-Shamiri Rashad Ismail Department of mathematics Sacred Heart College(Autonomous)Tirupattur635601TamilnaduIndia Department of mathematics St.Joseph’s College of EngineeringOMRChennai600119TamilnaduIndia Department of mathematics Faculty of Science and ArtsKing Khalid UniversityMuhayl AssirSaudi Arabia Department of mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen

Graph theory has a significant impact and is crucial in the structure of many real-life *** simulate uncertainty and ambiguity,many extensions of graph theoretical notions were *** graphs play a vital role in modelling which has the property of non-crossing *** crossing edges benefit,they have some drawbacks,which paved the way for the introduction of planar *** overall purpose of the study is to contribute to the conceptual development of the Pythagorean Neutrosophic *** basic methodology of our research is the incorporation of the analogous concepts of planar graphs in the Pythagorean Neutrosophic *** significant finding of our research is the introduction of Pythagorean Neutrosophic Planar graphs,a conceptual blending of Pythagorean Neutro-sophic and Planar *** idea of Pythagorean Neutrosophic multigraphs and dual graphs are also introduced to deal with the ambiguous *** paper investigates the Pythagorean Neutrosophic planar values,which form the edges of the Pythagorean neutrosophic *** concept of Pythagorean Neutrosophic dual graphs,isomorphism,co-weak and weak isomorphism have also been explored for Pythagorean Neutrosophic planar graphs.A decision-making algorithm was proposed with a numerical illustra-tion by using the Pythagorean Neutrosophic fuzzy graph.

关键词： Pythagorean neutrosophic planar graph planarity value isomorphism dual graphs multigraph

Dipper Throated Optimization Algorithm for Unconstrained Function and Feature Selection

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Computers, materials & Continua 2022年第7期72卷 1465-1481页

作者： Ali E.Takieldeen El-Sayed m.El-kenawy mohammed Hadwan Rokaia m.Zaki Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Department of Communications and Electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt Department of Information Technology College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of Computer Science College of Applied SciencesTaiz UniversityTaizYemen Intelligent Analytics Group(IAG) College of ComputerQassim UniversityBuraydahSaudi Arabia Higher Institute of Engineering and Technology KafrelsheikhEgypt Department of Electrical Engineering Shoubra Faculty of EngineeringBenha UniversityEgypt

Dipper throated optimization(DTO)algorithm is a novel with a very efficient metaheuristic inspired by the dipper throated *** has its unique hunting technique by performing rapid bowing *** show the efficiency of the proposed algorithm,DTO is tested and compared to the algorithms of Particle Swarm Optimization(PSO),Whale Optimization Algorithm(WOA),Grey Wolf Optimizer(GWO),and Genetic Algorithm(GA)based on the seven unimodal benchmark ***,ANOVA and Wilcoxon rank-sum tests are performed to confirm the effectiveness of the DTO compared to other optimization ***,to demonstrate the proposed algorithm’s suitability for solving complex realworld issues,DTO is used to solve the feature selection *** strategy of using DTOs as feature selection is evaluated using commonly used data sets from the University of California at Irvine(UCI)*** findings indicate that the DTO outperforms all other algorithms in addressing feature selection issues,demonstrating the proposed algorithm’s capabilities to solve complex real-world situations.

关键词： metaheuristic optimization swarmoptimization feature selection function optimization

Constructing analytical estimates of the fuzzy fractional-order Boussinesq model and their application in oceanography

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Journal of Ocean Engineering and Science 2023年第2期8卷 196-215页

作者： Saima Rashid mohammed K.A.Kaabar Ali Althobaiti m.S.Alqurashi Department of mathematics Government College UniversityFaisalabad 38000Pakistan Institute of mathematical Sciences Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Department of mathematics College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia

The main idea of this article is the investigation of atmospheric internal waves,often known as gravity *** arises within the ocean rather than at the interface.A shallow fluid assumption is illustrated by a series of nonlinear partial differential equations in the *** the waves are scattered over a wide geographical region,this system can precisely replicate atmospheric internal *** this research,the numerical solutions to the fuzzy fourth-order time-fractional Boussinesq equation(BSe)are determined for the case of the aquifer propagation of long waves having small amplitude on the surface of water from a *** novel scheme,namely the generalized integral transform(proposed by ***[35])coupled with the Adomian decomposition method(GIADm),is used to extract the fuzzy fractional BSe in R,Rn and(2nth)-order including *** have a clear understanding of the physical phenomena of the projected solutions,several algebraic aspects of the generalized integral transform in the fuzzy Caputo and Atangana-Baleanu fractional derivative operators are *** confrontation between the findings by Caputo and ABC fractional derivatives under generalized Hukuhara differentiability are presented with appropriate values for the fractional order and uncertainty parameters℘∈[0,1]were depicted in *** to proposed findings,hydraulic engineers,being analysts in drainage or in water management,might access adequate storage volume quantity with an uncertainty level.

关键词： Fuzzy set theory Elzaki transform Adomian decomposition method Boussinesq equation Caputo fractional derivative

Deployment of Polar Codes for mission-Critical machine-Type Communication Over Wireless Networks

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Computers, materials & Continua 2022年第4期71卷 573-592页

作者： Najib Ahmed mohammed Ali mohammed mansoor Rodina Binti Ahmad Saaidal Razalli Bin Azzuhri Department of Software Engineering Faculty of Computer Science and Information TechnologyUniversity of Malaya50603Kuala Lumpur Malaysia 2Department of Computer System&TechnologyFaculty of Computer Science and Information TechnologyUniversity of Malaya50603Kuala LumpurMalaysia

mission critical machine-type Communication(mcmTC),also referred to as Ultra-reliable Low Latency Communication(URLLC),has become a research *** is primarily characterized by communication that provides ultra-high reliability and very low latency to concurrently transmit short commands to a massive number of connected *** the reduction in physical(PHY)layer overhead and improvement in channel coding techniques are pivotal in reducing latency and improving reliability,the current wireless standards dedicated to support mcmTC rely heavily on adopting the bottom layers of general-purpose wireless standards and customizing only the upper *** mcmTC has a significant technical impact on the design of all layers of the communication protocol *** this paper,an innovative bottom-up approach has been proposed for mcmTC applications through PHY layer targeted at improving the transmission reliability by implementing ultra-reliable channel coding scheme in the PHY layer of IEEE 802.11a standard bearing in mind short packet transmission *** achieve this aim,we analyzed and compared the channel coding performance of convolutional codes(CCs),low-density parity-check(LDPC)codes,and polar codes in wireless network on the condition of short data packet *** Viterbi decoding algorithm(VA),logarithmic belief propagation(Log-BP)algorithm,and cyclic redundancy check(CRC)successive cancellation list(SCL)(CRC-SCL)decoding algorithm were adopted to CC,LDPC codes,and polar codes,***,a new PHY layer for mcmTC has been *** reliability of the proposed approach has been validated by simulation in terms of Bit error rate(BER)and packet error rate(PER)***-to-noise ratio(SNR).The simulation results demonstrate that the reliability of IEEE 802.11a standard has been significantly improved to be at PER=10−5 or even better with the implementation of polar *** results also show that the general-purpose wireless net

关键词： machine-type communication mission-critical applications mTC URLLC m2m wireless networks polar codes

Demonstration of a Polymer-Based Single Step Waveguide by 3D Printing Digital Light Processing Technology for Isopropanol Alcohol-Concentration Sensor

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Photonic Sensors 2022年第1期12卷 10-22页

作者： Kankan SWARGIARY Romuald JOLIVOT Waleed Soliman mohammed Center of Research in Optoelectronics Communication and Computational Systems(BU-CROCCS)School of EngineeringBangkok UniversityPathum Th am 12120Thailand

A polymer based horizontal single step waveguide fbr the sensing of alcohol is developed and *** waveguide is fabricated by 3-dimensional(3D)printing digital light processing(DLP)technology using monocure 3D rapid ultraviolet(UV)clear resin with a refractive index of n=*** fabricated waveguide is a one-piece tower shaped ridge *** is designed to achieve the maximum light confinement at the core by reducing the effective refractive index around the cladding *** the surface roughness generated from the 3D printing DLP technology,various waveguides with different gap sizes are *** is done fbr the different gap waveguides to achieve the minimum feature gap size utilizing the light re-coupling principle and polymer swelling *** effect occurs due to the polymer-alcohol interaction that results in the diffusion of alcohol molecules inside the core of the waveguide,thus changing the waveguide from the leaky type(without alcohol)to the guided type(with alcohol).Using this principle,the analysis of alcohol concentration performing as a larger increase in the transmitted light in tensity can be *** this work,the sensitivity of the system is also compared and analyzed fbr different waveguide gap sizes with different concentrations of isopropanol alcohol(IPA).A waveguide gap size of 300 jim gives the highest in crease in the transmitted optical power of 65%when tested with 10μL(500ppm)concentration of *** with all other gaps,it also displays faster response time(/=5seconds)fbr the optical power to change right after depositing IPA in the *** measured limit of detection(LOD)achieved fbr 300μm is 0.366 *** addition,the fabricated waveguide gap of 300μm successfully demonstrates the sen sing limit of IPA concentration below 400μpm which is considered as an exposure limit by"National Institute for Occupational Safety and Health".All the mechanical mount and the alignments are done by 3D printing fused d

关键词： Polymer 3D printing digital light processing(DLP) isopropanol alcohol(IPA) swelling effect fused deposition method(FDm)

multi-Attribute Group Decision-making method under Spherical Fuzzy Bipolar Soft Expert Framework with Its Application

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Computer modeling in Engineering & Sciences 2023年第11期137卷 1891-1936页

作者： mohammed m.Ali Al-Shamiri Ghous Ali muhammad Zain Ul Abidin Arooj Adeel Department of mathematics Faculty of Science and ArtsMahayl AssirKing Khalid UniversityAbhaSaudi Arabia Department of mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen Department of mathematics Division of Science and TechnologyUniversity of EducationLahorePakistan

Spherical fuzzy soft expert set(SFSES)theory blends the perks of spherical fuzzy sets and group decision-making into a unified *** allows solutions to highly complicated uncertainties and ambiguities under the unbiased supervision and group decision-making of multiple ***,SFSES theory has some deficiencies such as the inability to interpret and portray the bipolarity of *** work highlights and overcomes these limitations by introducing the novel spherical fuzzy bipolar soft expert sets(SFBSESs)as a powerful hybridization of spherical fuzzy set theory with bipolar soft expert sets(BSESs).Followed by the development of certain set-theoretic operations and properties of the proposed model,important problems,including the selection of non-powered dam(NPD)sites for hydropower conversion are discussed and solved under the proposed *** problems mainly focus on the need for an efficient tool capable of considering the bipolarity of parameters,complicated ambiguities,and multiple *** the new approach by a detailed comparative analysis,it is concluded that the proposed model is more comprehensive and reliable for multi-attribute group decisionmaking(mAGDm)than the previous tools,particularly considering the bipolarity of parameters under SFSES environment.

关键词： Spherical fuzzy sets bipolar soft expert sets group decision-making algorithm non-powered dams

IomT-Enabled Fusion-Based model to Predict Posture for Smart Healthcare Systems

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Computers, materials & Continua 2022年第5期71卷 2579-2597页

作者： Taher m.Ghazal mohammad Kamrul Hasan Siti Norul Huda Abdullah Khairul Azmi Abubakkar mohammed A.m.Afifi Faculty of Information Science and Technology University Kebangsaan MalaysiaUKM43600SelangorMalaysia Skyline University College SharjahUnited Arab Emirates

Smart healthcare applications depend on data from wearable sensors(WSs)mounted on a patient’s body for frequent monitoring *** systems depend on multi-level data for detecting illnesses and consequently delivering correct diagnostic *** collection of WS data and integration of that data for diagnostic purposes is a difficult *** paper proposes an Errorless Data Fusion(EDF)approach to increase posture recognition *** research is based on a case study in a health *** the rise in smart healthcare systems,WS data fusion necessitates careful attention to provide sensitive analysis of the recognized *** a result,it is dependent on WS inputs and performs group analysis at a similar rate to improve diagnostic *** breakdowns,the constant time factor,aggregation,and analysis results all cause errors,resulting in rejected or incorrect *** paper resolves this problem by using EDF,which is related to patient situational discovery through healthcare surveillance *** of WS data are examined extensively using active and iterative learning to identify errors in specific *** technology improves position detection accuracy,analysis duration,and error rate,regardless of user *** devices play a critical role in the management and treatment of *** can ensure that patients are provided with a unique treatment for their medical *** paper discusses the EDF technique for optimizing posture identification accuracy through multi-feature *** first,the patients’walking patterns are tracked at various time *** characteristics are then evaluated in relation to the stored data using a random forest classifier.

关键词： Data fusion(DF) posture recognition healthcare systems(HCS) wearable sensor(WS) medical data errorless data fusion(EDF)