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Impacts of oxytactic microorganisms and viscous dissipation in Carreau nanoliquid featuring ferromagnetic nanoparticles

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Partial Differential Equations in Applied Mathematics 2025年 13卷

作者： Tabrez, Muhammad Hussain, I. Khan, W.A. Khan, S.U. Waqas, M. Rashid, Rzgar Farooq Anwar, M.I. Ammar, Mohamed Ben Zamri, Nurnadiah Abiyev, Ruzimurod Garalleh, Hakim AL Department of Mathematics Mohi-ud-Din Islamic University Nerian Sharif Azad Jammu and Kashmir 12010 Pakistan Department of Mathematics Namal University Mianwali 42250 Pakistan NUTECH School of Applied Sciences and Humanities National University of Technology Islamabad 44000 Pakistan Department of Computer Science and Mathematics Lebanese American University Beirut Lebanon Faculty of Informatics and Computing Universiti Sultan Zainal Abidin Besut Campus Terengganu Besut 22200 Malaysia Department of Medical Laboratory Science College of Science Knowledge University Erbil 44001 Iraq Department of Medical Laboratory Technique College of Medical Technology AL-Kitab University Kirkuk Iraq Department of Mathematics School of Sciences and Humanities Nazarbayev University Astana Kazakhstan Center for Scientific Research and Entrepreneurship Northern Border University Arar 73213 Saudi Arabia Department of Mathematics and its Teaching Methods in Primary Education Tashkent State Pedagogical University Tashkent Uzbekistan Department of Mathematical Science College of Engineering University of Business and Technology Jeddah 21361 Saudi Arabia

Owing to rapid progress in field of nanotechnology, various mathematical model has been proposed regarding the flow of nanofluids. Based on boosted thermal properties, multidisciplinary applications of such materials has been claimed in various engineering and industrial processes. In current work, a theoretical analysis is performed for bioconvective flow of Carreau fluid with applications of magnetic dipole. The significance of magnetic dipole are presented with interaction of ferrofluid. The applications of viscous dissipation have also been entertained. The flow is subject to applications of stretched surface. Similarity variables are used for making transformation to obtain set of nonlinear ODEs from set of PDEs. The numerical computation is also made by using of well-known numerical method termed as bvp4c. Influences of various non dimensional fluid parameters like Brownian motion, viscous dissipation, Curie temperature, Weissenberg number, motile difference parameter and bioconvection Paclet number are examined and expressed graphically. It is perceived that ferrofluid's concentration declines when Brownian diffusive variable is augmented while opposite characteristics are reported for Schmidt number. Current results conveying applications in the biofuels, better heat transport medium, fertilizers, catalysts, electronics, paints, semiconductors, speakers, drug delivery, fertilizers etc. © 2024 The Author(s)

关键词： Bioconvection Carreau fluid Ferromagnetic flow Magnetic dipole Viscous dissipation

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Improved Fitness Dependent Optimizer for Solving Economic Load Dispatch Problem

arXiv

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arXiv 2022年

作者： Tahir, Barzan Hussein Rashid, Tarik A. Rauf, Hafiz Tayyab Bacanin, Nebojsa Chhabra, Amit Vimal, S. Yaseen, Zaher Mundher Department of Computer Science and Engineering University of Kurdistan Helwer Erbil Iraq Centre for Smart Systems AI and Cybersecurity Staffordshire University Stoke-on-Trent United Kingdom Singidunum University Danijelova 32 Belgrade11000 Serbia Department of Computer Engineering and Technology Guru Nanak Dev University Amritsar India Department of Artificial Intelligence and Data Science Ramco Institute of Technology North Venganallur Village Virudhunagar District Tamilnadu Rajapalayam626 117 India Department of Earth Sciences and Environment Faculty of Science and Technology Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia USQ's Advanced Data Analytics Research Group School of Mathematics Physics and Computing University of Southern Queensland QLD4350 Australia New era and Development in Civil Engineering Research Group Scientific Research Center Al-Ayen University Thi-Qar64001 Iraq

Economic Load Dispatch depicts a fundamental role in the operation of power systems, as it decreases the environmental load, minimizes the operating cost, and preserves energy resources. The optimal solution to Economic Load Dispatch problems and various constraints can be obtained by evolving several evolutionary and swarm-based algorithms. The major drawback to swarm-based algorithms is premature convergence towards an optimal solution. Fitness Dependent Optimizer is a novel optimization algorithm stimulated by the decision-making and reproductive process of bee swarming. Fitness Dependent Optimizer (FDO) examines the search spaces based on the searching approach of Particle Swarm Optimization. To calculate the pace, the fitness function is utilized to generate weights that direct the search agents in the phases of exploitation and exploration. In this research, the authors have carried out Fitness Dependent Optimizer to solve the Economic Load Dispatch problem by reducing fuel cost, emission allocation, and transmission loss. Moreover, the authors have enhanced a novel variant of Fitness Dependent Optimizer, which incorporates novel population initialization techniques and dynamically employed sine maps to select the weight factor for Fitness Dependent Optimizer. The enhanced population initialization approach incorporates a quasi-random Sabol sequence to generate the initial solution in the multi-dimensional search space. A standard 24-unit system is employed for experimental evaluation with different power demands. Empirical results obtained using the enhanced variant of the Fitness Dependent Optimizer demonstrate superior performance in terms of low transmission loss, low fuel cost, and low emission allocation compared to the conventional Fitness Dependent Optimizer. The experimental study obtained 7.94E-12, the lowest transmission loss using the enhanced Fitness Dependent Optimizer. Correspondingly, various standard estimations are used to prove the stability

关键词： Decision making

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Foundational Competencies and Responsibilities of a Research Software Engineer

arXiv

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arXiv 2023年

作者： Goth, Florian Alves, Renato Braun, Matthias Castro, Leyla Jael Chourdakis, Gerasimos Christ, Simon Cohen, Jeremy Druskat, Stephan Erxleben, Fredo Grad, Jean-Noël Hagdorn, Magnus Hodges, Toby Juckeland, Guido Kempf, Dominic Lamprecht, Anna-Lena Linxweiler, Jan Löffler, Frank Martone, Michele Schwarzmeier, Moritz Seibold, Heidi Thiele, Jan Philipp Waldow, Harald von Wittke, Samantha Institute for Theoretical Physics and Astrophysics University of Würzburg Germany European Molecular Biology Laboratory Heidelberg Germany Cluster of Excellence IntCDC University of Stuttgart Germany ZB MED Information Centre for Life Sciences Cologne Germany School of Computation Information and Technology Technical University of Munich Garching Germany Institute for Parallel and Distributed Systems University of Stuttgart Stuttgart Germany Leibniz University Hannover Department of Cell Biology and Biophysics Computational Biology Germany Imperial College London London United Kingdom Institute for Software Technology Berlin Germany Humboldt-Universität zu Berlin Department of Computer Science Berlin Germany Helmholtz-Zentrum Dresden-Rossendorf Germany Institute for Computational Physics University of Stuttgart Germany Geschäftsbereich IT Charité Universitätsmedizin Berlin Germany The Carpentries United States Heidelberg University Scientific Software Center Germany Institute of Computer Science University of Potsdam Germany Technische Universität Braunschweig Germany Michael Stifel Center Jena Friedrich Schiller University Jena Germany Leibniz Supercomputing Centre Garching Germany Mathematical Modeling and Analysis TU Darmstadt Germany IGDORE Munich Germany Weierstrass Institute Berlin Germany Leibniz University Hannover Institute of Applied Mathematics Scientific Computing Hannover Germany Johann Heinrich von Thünen Institute Centre for Information Management Germany

The term Research Software Engineer, or RSE, emerged a little over 10 years ago as a way to represent individuals working in the research community but focusing on software development. The term has been widely adopted and there are a number of high-level definitions of what an RSE is. However, the roles of RSEs vary depending on the institutional context they work in. At one end of the spectrum, RSE roles may look similar to a traditional research role. At the other extreme, they resemble that of a software engineer in industry. Most RSE roles inhabit the space between these two extremes. Therefore, providing a straightforward, comprehensive definition of what an RSE does and what experience, skills and competencies are required to become one is challenging. In this community paper we define the broad notion of what an RSE is, explore the different types of work they undertake, and define a list of foundational competencies as well as values that outline the general profile of an RSE. Further research and training can build upon this foundation of skills and focus on various aspects in greater detail. We expect that graduates and practitioners will have a larger and more diverse set of skills than outlined here. On this basis, we elaborate on the progression of these skills along different dimensions. We look at specific types of RSE roles, propose recommendations for organisations, and give examples of future specialisations. An appendix details how existing curricula fit into this framework. © 2023, CC BY.

关键词： computer aided software engineering

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Many-body Hilbert space scarring on a superconducting processor

arXiv

引用

arXiv 2022年

作者： Zhang, Pengfei Dong, Hang Gao, Yu Zhao, Liangtian Hao, Jie Desaules, Jean-Yves Guo, Qiujiang Chen, Jiachen Deng, Jinfeng Liu, Bobo Ren, Wenhui Yao, Yunyan Zhang, Xu Xu, Shibo Wang, Ke Jin, Feitong Zhu, Xuhao Zhang, Bing Li, Hekang Song, Chao Wang, Zhen Liu, Fangli Papić, Zlatko Ying, Lei Wang, H. Lai, Ying-Cheng Department of Physics ZJU-Hangzhou Global Scientific and Technological Innovation Center Interdisciplinary Center for Quantum Information Zhejiang Province Key Laboratory of Quantum Technology and Device Zhejiang University Hangzhou310027 China Institute of Automation Chinese Academy of Sciences Beijing100190 China School of Physics and Astronomy University of Leeds LeedsLS2 9JT United Kingdom Alibaba-Zhejiang University Joint Research Institute of Frontier Technologies Hangzhou310027 China QuEra Computing Inc. BostonMA02135 United States School of Electrical Computer and Energy Engineering Department of Physics Arizona State University TempeAZ85287 United States

Quantum many-body scarring (QMBS) – a recently discovered form of weak ergodicity breaking in strongly-interacting quantum systems – presents opportunities for mitigating thermalization-induced decoherence in quantum information processsing. However, the existing experimental realizations of QMBS are based on kinetically-constrained systems where an emergent dynamical symmetry "shields" such states from the thermalizing bulk of the spectrum. Here, we experimentally realize a distinct kind of QMBS phenomena by approximately decoupling a part of the many-body Hilbert space in the computational basis. Utilizing a programmable superconducting processor with 30 qubits and tunable couplings, we realize Hilbert space scarring in a non-constrained model in different geometries, including a linear chain as well as a quasi-one-dimensional comb geometry. By performing full quantum state tomography on 4-qubit subsystems, we provide strong evidence for QMBS states by measuring qubit population dynamics, quantum fidelity and entanglement entropy following a quench from initial product states. Our experimental findings broaden the realm of QMBS mechanisms and pave the way to exploiting correlations in QMBS states for applications in quantum information technology. Copyright © 2022, The Authors. All rights reserved.

关键词： Vector spaces

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On a nonlocal Cahn-Hilliard model permitting sharp interfaces

arXiv

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arXiv 2020年

作者： Burkovska, Olena Gunzburger, Max Computer Science and Mathematics Division Oak Ridge National Laboratory One Bethel Valley Road TN37831 United States Department of Scientific Computing Florida State University 400 Dirac Science Library TallahasseFL32306-4120 United States The Oden Institute for Computer Engineering and Sciences University of Texas at Austin AustinTX78712 United States

A nonlocal Cahn–Hilliard model with a nonsmooth potential of double-well obstacle type that promotes sharp interfaces in the solution is presented. To capture long-range interactions between particles, a nonlocal Ginzburg-Landau energy functional is defined which recovers the classical (local) model as the extent of nonlocal interactions vanish. In contrast to the local Cahn–Hilliard problem that always leads to diffuse interfaces, the proposed nonlocal model can lead to a strict separation into pure phases of the substance. Here, the lack of smoothness of the potential is essential to guarantee the aforementioned sharp-interface property. Mathematically, this introduces additional inequality constraints that, in a weak formulation, lead to a coupled system of variational inequalities which at each time instance can be restated as a constrained optimization problem. We prove the well posedness and regularity of the semi-discrete and continuous in time weak solutions, and derive the conditions under which pure phases are admitted. Moreover, we develop discretizations of the problem based on finite element methods and implicit-explicit time stepping methods that can be realized efficiently. Finally, we illustrate our theoretical findings through several numerical experiments in one and two spatial dimensions that highlight the differences in features of local and nonlocal solutions and also the sharp interface properties of the nonlocal model. Copyright © 2020, The Authors. All rights reserved.

关键词： Variational techniques

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Energy-efficient blockchain-integrated IoT and AI framework for sustainable urban microclimate management

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Sustainable computing: Informatics and Systems 2025年 47卷

作者： N. Krishnaraj Hadeel Alsolai Fahd N. Al-Wesabi Yahia Said Ali Alqazzaz S. Gayathri Priya S. Shanmathi B. Narmada Department of Networking and Communications School of Computing College of Engineering and Technology SRM Institute of Science and Technology Kattankulathur Tamil Nadu 603203 India Department of Information Systems College of Computer and Information Sciences Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia Department of Computer Science Applied College at Mahayil King Khalid University Saudi Arabia Center for Scientific Research and Entrepreneurship Northern Border University Arar 73213 Saudi Arabia Department of Computer Science and Artificial Intelligence College of Computing and Information Technology University of Bisha Bisha 67714 Saudi Arabia Department of ECE R.M.D. Engineering College Chennai India Department of Electronics and Communication Engineering GMR Institute of Technology Rajam Andhra Pradesh 532127 India Department of Information Technology Dhirajlal Gandhi College of Technology Salem Tamil Nadu 636309 India

The increase of urban areas has difficulties in managing microclimate conditions in green city to improve data security, resource efficiency, and predictive accuracy. This research integrates IoT, blockchain, and AI technologies with nature-inspired solutions like Sponge City and Biophilic Design precept to tackle these challenges. The proposed model utilizes blockchain meshwork to vouch unattackable and tamper-proof data direction. The fog calculation facilitates localized data pre- processing, reduced response time and reduction in bandwidth usage. The module for predictive analytics, AI and LSTM network enhances the preciseness of mastery actions in superintend microclimates, providing significant improvements in environmental control systems. This study ensures urban sustainability and management in real-time and adaptive environmental control.

关键词： AI Biophilic Design Blockchain Fog computing IoT Microclimate control Smart city management Sponge City Urban sustainability

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Eigenvalues and eigenvectors of tau matrices with applications to markov processes and economics

arXiv

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arXiv 2020年

作者： Ekström, Sven-Erik Garoni, Carlo Jozefiak, Adam Perla, Jesse Department of Information Technology Division of Scientific Computing Uppsala University Sweden Faculty of Mathematics and Natural Sciences Bergische Universität Wuppertal Germany Department of Mathematics University of Rome Tor Vergata Italy Department of Computer Science University of British Columbia Canada Vancouver School of Economics University of British Columbia Canada

In the context of matrix displacement decomposition, Bozzo and Di Fiore introduced the so-called τΕ, algebra, a generalization of the more known τ algebra originally proposed by Bini and Capovani. We study the properties of eigenvalues and eigenvectors of the generator Tn,Ε, of the τΕ, algebra. In particular, we derive the asymptotics for the outliers of Tn,Ε, and the associated eigenvectors;we obtain equations for the eigenvalues of Tn,Ε,, which provide also the eigenvectors of Tn,Ε,;and we compute the full eigendecomposition of Tn,Ε, in the specific case Ε = 1. We also present applications of our results in the context of queuing models, random walks, and diffusion processes, with a special attention to their implications in the study of wealth/income inequality and portfolio *** Codes 15A18, 15B05, 60K25, 60G50, 60J60, 91G10 Copyright © 2020, The Authors. All rights reserved.

关键词： Eigenvalues and eigenfunctions

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Efficient Verification of Continuous-Variable Quantum States and Devices without Assuming Identical and Independent Operations

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Physical Review Letters 2021年第24期126卷 240503-240503页

作者： Ya-Dong Wu Ge Bai Giulio Chiribella Nana Liu QICI Quantum Information and Computation Initiative Department of Computer Science The University of Hong Kong Pokfulam Road Hong Kong The University of Hong Kong Shenzhen Institute of Research and Innovation 5/F Key Laboratory Platform Building No. 6 Yuexing 2nd Road Nanshan Shenzhen 518057 China Department of Computer Science Parks Road Oxford OX1 3QD United Kingdom Perimeter Institute for Theoretical Physics Waterloo Ontario N2L 2Y5 Canada Institute of Natural Sciences Shanghai Jiao Tong University Shanghai 200240 China Ministry of Education Key Laboratory in Scientific and Engineering Computing Shanghai Jiao Tong University Shanghai 200240 China University of Michigan-Shanghai Jiao Tong University Joint Institute Shanghai 200240 China

Continuous-variable quantum information, encoded into infinite-dimensional quantum systems, is a promising platform for the realization of many quantum information protocols, including quantum computation, quantum metrology, quantum cryptography, and quantum communication. To successfully demonstrate these protocols, an essential step is the certification of multimode continuous-variable quantum states and quantum devices. This problem is well studied under the assumption that multiple uses of the same device result in identical and independently distributed (i.i.d.) operations. However, in realistic scenarios, identical and independent state preparation and calls to the quantum devices cannot be generally guaranteed. Important instances include adversarial scenarios and instances of time-dependent and correlated noise. In this Letter, we propose the first set of reliable protocols for verifying multimode continuous-variable entangled states and devices in these non-i.i.d scenarios. Although not fully universal, these protocols are applicable to Gaussian quantum states, non-Gaussian hypergraph states, as well as amplification, attenuation, and purification of noisy coherent states.

关键词： Quantum benchmarking Quantum cryptography Quantum information processing with continuous variables

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A Forecasting System of Computational Time of DFT Calculations under the Multiverse ansatz via Machine Learning and Cheminformatics

arXiv

引用

arXiv 2019年

作者： Ma, Shuo Ma, Yingjin Zhang, Baohua Tian, Yingqi Jin, Zhong Computer Network Information Center Chinese Academy of Sciences Beijing100190 China School of Computer Science and Technology University of Chinese Academy of Sciences Beijing101408 China Center of Scientific Computing Applications & Research Chinese Academy of Sciences Beijing100190 China

A forecasting system for predicting computational time of density-functional theory (DFT) calculation is presented. The forecasting system is established under the many-worlds interpretation of multiverse ansatz, in which the molecules and Kohn-Sham equation are the trunk and every calculating parameters (e.g. basis set, functional) are branch points that generate result’s worlds. Every world is constituted by the solved wave functions and the accompanying data (e.g. computational time) after solving. Several machine-learning models, including random forest, long short-term memory, message passing neural network and multilevel graph convolutional network models, are employed for the prediction of computational time of any molecule belonging to a given world. For the molecules that belong to a world without pre-trained models, additional efforts are used for linear combination of models from adjacent world in order to give reasonable predictions. Benchmark results show that the forecasting system can predict proposed times with mean relative error normally around 20% when comparing to these of practical calculations. Copyright © 2019, The Authors. All rights reserved.

关键词： Molecules

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Correction to: A sharp interface method using enriched finite elements for elliptic interface problems

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Numerische Mathematik 2021年第4期147卷 783-783页

作者： Susanne Höllbacher Gabriel Wittum Computer Electrical and Mathematical Sciences and Engineering (CEMSE) King Abdullah University of Science and Technology (KAUST) Thuwal Kingdom of Saudi Arabia Goethe-Center for Scientific Computing (G-CSC) Johann Wolfgang Goethe University Frankfurt Germany

A correction to this paper has been published: https://***/10.1007/s00211-021-01191-x

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