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Chaotic Aquila Optimization Algorithm for Solving Phase Equilibrium Problems and Parameter Estimation of Semi-empirical Models

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Journal of Bionic Engineering 2024年第1期21卷 486-526页

作者： Oguz Emrah Turgut Mert sinan Turgut Erhan Kırtepe Department of Industrial Engineering Faculty of Engineering and ArchitectureIzmir Bakircay UniversityMenemenizmirTurkey Department of Mechanical Engineering Faculty of EngineeringEge UniversityBornovaizmirTurkey Department of Motor Vehicles and Transportation Technologies Sirnak UniversitySirnakTurkey

This research study aims to enhance the optimization performance of a newly emerged Aquila Optimization algorithm by incorporating chaotic sequences rather than using uniformly generated Gaussian random *** work employs 25 different chaotic maps under the framework of Aquila *** considers the ten best chaotic variants for performance evaluation on multidimensional test functions composed of unimodal and multimodal problems,which have yet to be studied in past literature *** was found that Ikeda chaotic map enhanced Aquila Optimization algorithm yields the best predictions and becomes the leading method in most of the *** test the effectivity of this chaotic variant on real-world optimization problems,it is employed on two constrained engineering design problems,and its effectiveness has been ***,phase equilibrium and semi-empirical parameter estimation problems have been solved by the proposed method,and respective solutions have been compared with those obtained from state-of-art *** is observed that CH01 can successfully cope with the restrictive nonlinearities and nonconvexities of parameter estimation and phase equilibrium problems,showing the capabilities of yielding minimum prediction error values of no more than 0.05 compared to the remaining algorithms utilized in the performance benchmarking process.

关键词： Aquila optimization algorithm Chaotic maps Parameter estimation Phase equilibrium Unconstrained optimization

Fractional synergetic tracking control for robot manipulator

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Journal of Control and Decision 2024年第1期11卷 139-152页

作者： Asma Saif Raouf Fareh Saif sinan Maamar Bettayeb Department of Electrical Engineering University of SharjahSharjahUAE Department of Electrical Engineering École de technologie supérieureMontrealCanada CEIES King Abdulaziz UniversityJeddahSaudi Arabia

This work takes advantage of synergetic control theory and fractional calculus to develop and propose fractional synergetic control(FSC)strategy for Four Degrees of Freedom(4-DOF)robot *** proposed fractional synergetic control is designed to track a joint space as well as workspace desired *** calculus gives more flexibility in the design since it has a wider stability *** to that,as stated in the literature,compared to a similar approach such as sliding mode control,the synergetic control approach converges faster to the equilibrium point,without chattering with a fast *** paper proposes a new control strategy that takes advantage of fractional calculus and synergetic control *** proposed control strategy is tested experimentally on a 4-DOF manipulator to study the performance of the proposed control *** stability of the closed-loop system is proved using the Lyapunov *** experimental results have shown that the proposed FSC design has achieved a good tracking performance.

关键词： Synergetic control robust control robot manipulator fractional controller

Do investments in green energy,energy efficiency,and nuclear energy R&D improve the load capacity factor?An augmented ARDL approach

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Geoscience Frontiers 2024年第4期15卷 372-382页

作者： Xin Jin Zahoor Ahmed Ugur Korkut Pata Mustafa Tevfik Kartal sinan Erdogan School of Business Guilin Tourism UniversityGuilin 541006PR China Department of Business Administration Faculty of EconomicsAdministrative and Social SciencesBahçesehir Cyprus UniversityNicosiaTurkey Department of Economic&Data Sciences New Uzbekistan University54 Mustaqillik Ave.Tashkent100007Uzbekistan Osmaniye Korkut Ata University Faculty of Economics and Administrative SciencesDepartment of Economics80000 MerkezOsmaniyeTurkey Department of Banking and Finance European University of LefkeLefkeNorthern CyprusTR-10 MersinTürkiye Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon Department of Economics and Management Khazar UniversityBakuAzerbaijan Hatay Mustafa Kemal University Faculty of Economics and Administrative SciencesHatayTurkey

Renewable energy,energy efficiency,and nuclear energy research and development(RER,EER,and NER)budgets are immensely important to fulfill sustainable development goals 7,9,and 13,by accelerating energy innovation,energy transition,and climate *** literature on the drivers of the load capacity factor(LCF),a recently developed ecological quality measure,is mounting;however,the roles of energy investments in the LCF are largely ***,this study assesses the impacts of RER,EER,NER,and financial globalization(FIG)on the LCF using data from 1974 to 2018 for *** and reliable time series tests(Augmented ARDL,DOLS,and Fourier causality)are adopted to analyze cointegration,long-run impacts,and causal *** outcomes unveil that both green energy and energy efficiency R&D promote the LCF by enhancing ecological ***,the positive impact of NER on the LCF is found to be weaker than the impacts of RER and *** curbs ecological degradation by expanding the ***,the U-shaped connection between economic growth(ECG)and the LCF confirms the load capacity ***,policymakers should focus on RER and EER to preserve the environment and promote sustainable growth.

关键词： Green Energy R&D Energy Efficiency R&D Nuclear Energy R&D Financial Globalization LCF

Role of End-ring Configuration in Shaping IE4 Induction Motor Performance

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CES Transactions on Electrical Machines and Systems 2024年第3期8卷 245-254页

作者： Tayfun Gundogdu sinan Suli Istanbul Technical University Energy InstituteMaslak/İstanbulTürkiye and GAMAK Electric MotorsDudullu OSB34775Ümraniye/İstanbulTürkiye GAMAK Electric Motors Dudullu OSB34775Ümraniye/İstanbulTürkiye

The performance characteristics,particularly the starting performance of direct line-fed induction motors,which are mainly influenced by the design of the rotor,are crucial considerations for *** is quite a challenging issue for motor manufacturers to enhance the starting performance of existing mass-produced motors with minimal modifications and *** this paper,a simple and cost-effective method to improve the starting performance of a commercial squirrel-cage induction motor(SCIM)is *** influence of geometric parameters of the end-ring on the performance characteristics,including starting(locked rotor)torque,pull-up and break down torque,starting current,rotor electric parameters,current density,power losses,and efficiency have been comprehensively *** has been revealed that among the other end-ring design parameters,the ring thickness has a significant effect on the performance *** optimal end-ring thickness is determined,and its performance characteristics have been compared to those of its initial *** and parametric analyses have been conducted using a 2D time-stepping finite element method(FEM).The FEM results were validated using experimental measurements obtained from an 11 kW SCIM prototype.

关键词： End-ring design Induction motor Starting performance Super premium efficiency Torque-speed curve

Sealing capacity evaluation of underground gas storage under intricate geological conditions

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Energy Geoscience 2024年第3期5卷 234-243页

作者： Guangquan Zhang sinan Zhu Daqian Zeng Yuewei Jia Lidong Mi Xiaosong Yang Junfa Zhang Petroleum Exploration and Production Research Institute SinopecBeijing100083China

Evaluating underground gas storage(UGS)sealing capacity is essential for its safe construction and operational *** involves evaluating both the static sealing capacity of traps during hydrocarbon accumulation and the dynamic sealing capacity of UGS under intensive gas injection and withdrawal,and alternating *** study detailed the methodology developed by *** approach merges disciplines like geology,geomechanics,and hydrodynamics,employing both dynamic-static and qualitative-quantitative ***'s evaluation methods,grounded in the in situ stress analysis,include mechanistic studies,laboratory tests,geological surveys,stress analysis,and fluid-solid *** tests on the static and dynamic sealing capacity of UGS,alongside investigations into sealing mechanisms and the geological and geomechanical properties of cap rocks and faults,A geomechanics-rock damage-seepage mechanics dynamic coupling analysis method has been developed to predict in situ stress variations relative to pore pressure changes during UGS operations and evaluate fault sealing capacity and cap rock integrity,thereby setting the maximum operational *** this evaluation technique,Sinopec has defined performance metrics and criteria for evaluating the sealing capacity of depleted gas reservoirs,enabling preliminary sealing capacity evaluations at UGS *** evaluations have significantly informed the design of UGS construction schemes and the evaluation of fault sealing capacity and cap rock integrity during UGS operations.

关键词： Underground gas storage Sealing capacity Geomechanics Maximum operational pressure

Acoustical imaging of the nearshore seafloor depositions and deformations,a key study for Western Istanbul,Türkiye

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Acta Oceanologica Sinica 2024年第8期43卷 69-78页

作者： ÖZGAN sinan ALP Hakan BAYAT Oğuz VARDAR denizhan Institute of Marine Sciences and Management Istanbul University34134 VefaIstanbulTürkiye Department of Geophysical Engineering Istanbul University Cerrahpaşa34500 HadımköyIstanbulTürkiye School of Engineering and Architecture Altinbas University34217 BagcilarIstanbulTürkiye

To protect the sustainability of the benefits from seas and near coastal areas,which have under the effect of the very complex hydrodynamic conditions and intensive human activities,without disrupting the balance of nature,it is necessary to image the status of the seafloor ***,this study presents the deformations,depositional conditions,underwater constructions,and the other non-natural impacts on the seafloor of the nearshore area at western Istanbul(between Küçükçekmece and Büyükçekmece lagoons)where it intensely used by the *** results of the study may provide some guidance for understanding the impacts and risk factors of uses that are or will be conducted in coastal and/or near-coastal *** planning for civil coastal structures and areas should be done in great harmony with nature,minimizing negative environmental *** sediment distribution in the area is generally quite complex,the current state of the region,wave action,hydrodynamic conditions,the amount of material transported from the land,and bathymetry are important influencing *** seafloor has been damaged primarily by anchor deformation and associated bottom scanning,as well as disturbing trawl *** seafloor was observed as partially shallowing near the constructions(such as natural gas pipelines,fishermen’s shelter,and port piles)of coastal areas and associated with sand ***,scanning the seafloor using side-scan sonar may provide valuable frequency data to prevent future disruptions.

关键词： port activities sediment classifications side scan sonar sub bottom profiler coastal protection

Prediction of Damping Capacity Demand in Seismic Base Isolators via Machine Learning

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 2899-2924页

作者： Ayla Ocak Umit Isıkdag Gebrail Bekdas sinan Melih Nigdeli Sanghun Kim ZongWoo Geem Department of Civil Engineering Istanbul University-CerrahpasaIstanbul34320Turkey Department of Informatics Mimar Sinan Fine Arts UniversityIstanbul34427Turkey Department of Civil and Environmental Engineering Temple UniversityPhiladelphiaPA19122USA Department of Smart City Gachon UniversitySeongnam13120Korea

Base isolators used in buildings provide both a good acceleration reduction and structural vibration control *** base isolators may lose their damping capacity over time due to environmental or dynamic *** deterioration of them requires the determination of the maintenance and repair needs and is important for the long-termisolator *** this study,an artificial intelligence prediction model has been developed to determine the damage and maintenance-repair requirements of isolators as a result of environmental effects and dynamic factors over *** the developed model,the required damping capacity of the isolator structure was estimated and compared with the previously placed isolator capacity,and the decrease in the damping property was tried to be *** this purpose,a data set was created by collecting the behavior of structures with single degrees of freedom(SDOF),different stiffness,damping ratio and natural period isolated from the foundation under far fault *** data is divided into 5 different damping classes varying between 10%and 50%.Machine learning model was trained in damping classes with the data on the structure’s response to random seismic *** a result of the isolator behavior under randomly selected earthquakes,the recorded motion and structural acceleration of the structure against any seismic vibration were examined,and the decrease in the damping capacity was estimated on a class *** performance loss of the isolators,which are separated according to their damping properties,has been tried to be determined,and the reductions in the amounts to be taken into account have been determined by *** the developed prediction model,using various supervised machine learning classification algorithms,the classification algorithm providing the highest precision for the model has been *** the results are examined,it has been determined that the damping of the isolator structure with the

关键词： Vibration control base isolation machine learning damping capacity

Comparative Quantitative Analysis of Retinal Superficial Capillary Plexus in Patients with Retinal Vein Occlusion and Unaffected Fellow Eyes

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Open Journal of Ophthalmology 2024年第3期14卷 218-228页

作者： sinan Aptikadir Nelly Sivkova Department of Ophthalmology Faculty of Medicine Medical University of Plovdiv Plovdiv Bulgaria University Eye Clinic St. George University Hospital Plovdiv Bulgaria

Purpose: To evaluate optical coherence tomography angiography (OCT-A) data obtained from the superficial retinal capillary plexus of patients with retinal vein occlusion and comparative analysis with data registered from unaffected fellow eyes. Methods: The examined patients were classified into 2 groups: group 1—eyes with established retinal vein occlusion (n = 29) and group 2—unaffected fellow eyes of patients with retinal vein occlusion (n = 24). The scanning protocol “Angiography 3 × 3 mm” of Zeiss Cirrus HD-OCT 6000, AngioPlex Metrix was used to evaluate the retinal superficial capillary plexus. The analyzed parameters were vascular density and perfusion density, as well as the area, perimeter, and circularity of the foveolar avascular zone (FAZ). Results: The comparative analysis of FAZ parameters at the superficial capillary plexus (SCP) between group 1 (eyes with retinal vein occlusion) and group 2 (unaffected fellow eyes) showed significant results for the three parameters, respectively area (p = 0.003), perimeter (p ≤ 0.001), and circularity (p = 0.011) of FAZ. The comparative analysis of the vascular network at SCP in patients with diagnosed retinal vein occlusion and unaffected fellow eyes showed significant results for vascular density (VD) in the central (p = 0.038) and inner (p ≤ 0.001) zones as well as total VD (p ≤ 0.001) were statistically significant. Moreover, the results obtained in the study of vascular perfusion (VP) indicated significant results in the inner zone (p ≤ 0.001) and total VP (p = 0.001). Vascular perfusion in the central zone (p = 0.116) was the only parameter not to meet significant results. Conclusion: The current study observed a significant enlargement of the FAZ and loss of its circularity, along with a reduction in vascular network parameters at the superficial retinal capillary plexus level.

关键词： Retinal Vein Occlusion Optical Coherence Tomography Angiography Superficial Retinal Capillary Plexus

Thermal heat flux distribution prediction in an electrical vehicle battery cell using finite element analysis and neural network

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Green Energy and Intelligent Transportation 2024年第3期3卷 54-62页

作者： Luttfi A.Al-Haddad Latif Ibraheem Ahmed I.EL-Seesy Alaa Abdulhady Jaber sinan A.Al-Haddad Reza Khosrozadeh Training and Workshops Center University of TechnologyBaghdadIraq Mechanical Engineering Department Memorial University of NewfoundlandNewfoundland and LabradorCanada Mechanical Engineering Department Benha Faculty of EngineeringBenha UniversityBenhaEgypt Mechanical Engineering Department University of TechnologyBaghdadIraq Civil Engineering Department University of TechnologyBaghdadIraq

In terms of battery design and evaluation,Electric Vehicles(EVs)are receiving a great deal of attention as a modern,eco-friendly,sustainable transportation *** this paper,a novel battery pack is designed to maintain a uniform temperature distribution,allowing the battery to operate within its optimal temperature *** proposed battery design is part of a main channel where a portion of cool air will pass from an inlet then exit from an outlet where a uniform temperature distribution is ***,a 3-D model of a battery cell was created,followed by thermal simulation for 15C,25C,and 35C ambient *** simulation results reveal that the temperature distribution is nearly uniform,with slightly higher values in the middle portion of the cell ***,using finite element analysis(FEA),it was determined that the heat flux per unit area is nearly uniform with a slight increase at the ***,a machine learning model is proposed by utilizing a neural network(NN).Lastly,the heat flux values were predicted using the NN model that was *** model was assessed based on statistical measures where a root mean square error(RMSE)value of 0.87%was *** NN outperformed FEA in terms of time consumption with a high prediction accuracy,leveraging the potential of adopting machine learning over FEA in related operational assessments.

关键词： EV battery Thermal distribution Finite element analysis Neural network Heat flux