检索结果-南通市图书馆

Computer Modeling in Engineering & Sciences 2024年第6期139卷 2289-2327页

作者： saima rashid Fahd Jarad Department of Mathematics Government College UniversityFaisalabad38000Pakistan Department of Natural Sciences School of Arts and SciencesLebanese American UniversityBeirut11022801Lebanon Department of Mathematics Faculty of Arts and ScienceÇnkaya UniversityAnkara06790Turkey Department of Medical Research China Medical UniversityTaichung40402TaiwanChina

Because of the features involved with their varied kernels,differential operators relying on convolution formulations have been acknowledged as effective mathematical resources for modeling real-world *** this paper,we constructed a stochastic fractional framework of measles spreading mechanisms with dual medication immunization considering the exponential decay and Mittag-Leffler *** this approach,the overall population was separated into five ***,the descriptive behavior of the system was investigated,including prerequisites for the positivity of solutions,invariant domain of the solution,presence and stability of equilibrium points,and sensitivity *** included a stochastic element in every cohort and employed linear growth and Lipschitz criteria to show the existence and uniqueness of *** numerical simulations for various fractional orders and randomization intensities are illustrated.

关键词： Measles epidemic model Atangana-Baleanu Caputo-Fabrizio differential operators existence and uniqueness qualitative analysis Newton interpolating polynomial

New generalized fuzzy transform computations for solving fractional partial differential equations arising in oceanography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2023年第1期8卷 55-78页

作者： saima rashid Rehana Ashraf Zakia Hammouch Department of Mathematics Government College UniversityFaisalabadPakistan Department of Mathematis Lahore College for Women UniversityLahorePakistan Division of Applied Mathematics Thu Dau Mot University Binh Duong ProvinceVietnam Department of Medical Research China Medical University HospitalTaichungTaiwan Department of Sciences Ecole Normal SuperieureMoulay Ismail University of Meknes50000 Morocco

This paper presents a study of nonlinear waves in shallow *** Korteweg-de Vries(KdV)equa-tion has a canonical version based on oceanography theory,the shallow water waves in the oceans,and the internal ion-acoustic waves in ***,the main goal of this investigation is to employ a semi-analytical method based on the homotopy perturbation transform method(HPTM)to obtain the numerical findings of nonlinear dispersive and fifth order KdV models for investigating the behaviour of magneto-acoustic waves in plasma via *** approach is connected with the fuzzy generalized integral transform and *** that,two novel results for fuzzy generalized integral transforma-tion concerning fuzzy partial gH-derivatives are *** illustrative examples are illustrated to show the effectiveness and supremacy of the proposed ***,2D and 3D simulations de-pict the comparison analysis between two fractional derivative operators(Caputo and Atangana-Baleanu fractional derivative operators in the Caputo sense)under generalized *** projected method(GHPTM)demonstrates a diverse spectrum of applications for dealing with nonlinear wave equa-tions in scientific *** current work,as a novel use of GHPTM,demonstrates some key differ-ences from existing similar methods.

关键词： Fuzzy set theory Hukuhara differentiability KdV Equation Generalized integral transform Caputo fractional derivative AB-Fractional operator Homotopy perturbation method

New Computation of Unified Bounds via a More General Fractional Operator Using Generalized Mittag-Leffler Function in the Kernel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2021年第1期126卷 359-378页

作者： saima rashid Zakia Hammouch Rehana Ashraf Yu-Ming Chu Department of Mathematics Government College UniversityFaisalabadPakistan Division of Applied mathematics Thu Dau Mot UniversityThu Dau Mot CityVietnam Department of Mathematics Lahore CollegeWomen UniversityJhangh CampusLahorePakistan Department of Mathematics Huzhou UniversityHuzhouChina

In the present case,we propose the novel generalized fractional integral operator describing Mittag-Leffler function in their kernel with respect to another function Φ.The proposed technique is to use graceful amalgamations of the Riemann-Liouville(RL)fractional integral operator and several other fractional ***,several generalizations are considered in order to demonstrate the novel variants involving a family of positive functions n(n∈N)for the proposed fractional *** order to confirm and demonstrate the proficiency of the characterized strategy,we analyze existing fractional integral operators in terms of classical fractional ***,some special cases are apprehended and the new outcomes are also *** obtained consequences illuminate that future research is easy to implement,profoundly efficient,viable,and exceptionally precise in its investigation of the behavior of non-linear differential equations of fractional order that emerge in the associated areas of science and engineering.

关键词： Integral inequality generalized fractional integral with respect to another function increasing and decreasing functions Mittag-Leffler function

Dynamical Analysis of the Stochastic COVID-19 Model Using Piecewise Differential Equation Technique

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2023年第12期137卷 2427-2464页

作者： Yu-Ming Chu Sobia Sultana saima rashid Mohammed Shaaf Alharthi Department of Mathematics Huzhou UniversityHuzhou313000China Department of Mathematics Imam Mohammad Ibn Saud Islamic UniversityRiyadh12211Saudi Arabia Department of Mathematics Government College UniversityFaisalabad38000Pakistan Department of Mathematics and Statistics College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia

Various data sets showing the prevalence of numerous viral diseases have demonstrated that the transmission is not truly *** examples are the spread of Spanish flu and *** aimof this research is to develop a comprehensive nonlinear stochastic model having six cohorts relying on ordinary differential equations via piecewise fractional differential ***,the strength number of the deterministic case is carried ***,for the stochastic model,we show that there is a critical number RS0 that can predict virus persistence and infection *** of the peculiarity of this notion,an interesting way to ensure the existence and uniqueness of the global positive solution characterized by the stochastic COVID-19 model is established by creating a sequence of appropriate Lyapunov *** ergodic stationary distribution for the stochastic COVID-19 model is *** findings demonstrate a piecewise numerical technique to generate simulation studies for these *** collected outcomes leave no doubt that this conception is a revolutionary doorway that will assist mankind in good perspective nature.

关键词： COVID-19 epidemic model piecewise fractional differential operators piecewise numerical scheme extinction ergodicity and stationary distribution

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Analysis and Numerical Computations of the Multi-Dimensional,Time-Fractional Model of Navier-Stokes Equation with a New Integral Transformation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2023年第9期136卷 3025-3060页

作者： Yuming Chu saima rashid Khadija Tul Kubra Mustafa Inc Zakia Hammouch M.S.Osman Department of Mathematics Huzhou UniversityHuzhouChina Department of Mathematics Government College UniversityFaisalabadPakistan Department of Mathematics Firat UniversityElazigTurkey Medical Research China Medical UniversityTaichungTaiwan Division of Applied Mathematics Thu Dau Mot UniversityThu Dau MotVietnam Department of Mathematics Faculty of ScienceCairo UniversityGiza12613Egypt

The analytical solution of the multi-dimensional,time-fractional model of Navier-Stokes equation using the triple and quadruple Elzaki transformdecompositionmethod is presented in this *** aforesaidmodel is analyzed by employing Caputo fractional *** deliberated three stimulating examples that correspond to the triple and quadruple Elzaki transform decomposition methods,*** findings illustrate that the established approaches are extremely helpful in obtaining exact and approximate solutions to the *** exact and estimated solutions are delineated via numerical *** proposed analysis indicates that the projected configuration is extremely meticulous,highly efficient,and precise in understanding the behavior of complex evolutionary problems of both fractional and integer order that classify affiliated scientific fields and technology.

关键词： Caputo derivative Elzaki transform time-fractional Navier-Stokes equation decomposition method

A New Scheme of the ARA Transform for Solving Fractional-Order Waves-Like Equations Involving Variable Coefficients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第1期138卷 761-791页

作者： Yu-Ming Chu Sobia Sultana Shazia Karim saima rashid Mohammed Shaaf Alharthi Department of Mathematics Huzhou UniversityHuzhou313000China Department of Mathematics Imam Mohammad Ibn Saud Islamic UniversityRiyadh11461Saudi Arabia Department of Basic Sciences and Humanities UET LahoreFaisalabad Campus54800Pakistan Department of Mathematics Government College UniversityFaisalabad38000Pakistan Department of Mathematics and Statistics College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia

The goal of this research is to develop a new,simplified analytical method known as the ARA-residue power series method for obtaining exact-approximate solutions employing Caputo type fractional partial differential equations(PDEs)with variable ***-transform is a robust and highly flexible generalization that unifies several existing *** key concept behind this method is to create approximate series outcomes by implementing the ARA-transform and Taylor’s *** process of finding approximations for dynamical fractional-order PDEs is challenging,but the ARA-residual power series technique magnifies this challenge by articulating the solution in a series pattern and then determining the series coefficients by employing the residual component and the limit at infinity *** approach is effective and useful for solving a massive class of fractional-order *** appealing implementations are taken into consideration to demonstrate the effectiveness of the projected technique in creating solitary series findings for the governing equations with variable ***,several visualizations are drawn for different fractional-order *** that,the estimated findings by the proposed technique are in close agreement with the exact ***,statistical analyses further validate the efficacy,dependability and steady interconnectivity of the suggested ARA-residue power series approach.

关键词： ARA-transform Caputo fractional derivative residue-power seriesmethod analytical solutions statistical analysis

Does sevoflurane sedation in pediatric patients lead to“pseudo”leptomeningeal enhancement in the brain on 3 Tesla magnetic resonance imaging?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Radiology 2023年第4期15卷 127-135页

作者： Kiran Hilal Kumail Khandwala saima rashid Faheemullah Khan Shayan Sirat Maheen Anwar Department of Radiology Aga Khan University HospitalKarachi 74800Pakistan Department of Anesthesiology Aga Khan University HospitalKarachi 74800Pakistan

BACKGROUND Prominent leptomeningeal contrast enhancement(LMCE)in the brain is observed in some pediatric patients during sedation for ***,based on clinical history and cerebrospinal fluid analysis,the patients are not acutely ill and do not exhibit meningeal *** study determined whether sevoflurane inhalation in pediatric patients led to this pattern of‘pseudo’LMCE(pLMCE)on 3 Tesla magnetic resonance imaging(MRI).AIM To highlight the significance of pLMCE in pediatric patients undergoing enhanced brain MRI under sedation to avoid misinterpretation in *** A retrospective cross-sectional evaluation of pediatric patients between 0-8 years of age was *** patients underwent enhanced brain MRI under inhaled *** LMCE grade was determined by two radiologists,and interobserver variability of the grade was calculated using Cohen’s *** LMCE grade was correlated with duration of sedation,age and weight using the Spearman rho rank *** A total of 63 patients were ***(22.2%)cases showed mild LMCE,48(76.1%)cases showed moderate LMCE,and 1 case(1.6%)showed severe *** found substantial agreement between the two radiologists in detection of pLMCE on post-contrast T1 imaging(kappa value=0.61;P<0.001).Additionally,we found statistically significant inverse and moderate correlations between patient weight and *** was no correlation between duration of sedation and *** pLMCE is relatively common on post-contrast spin echo T1-weighted MRI of pediatric patients sedated by sevoflurane due to their fragile and immature *** should not be misinterpreted for meningeal *** pertinent clinical history of the child is an essential prerequisite to avoid radiological overcalling and the subsequent burden of additional investigations.

关键词： Brain Pediatrics Gadolinium contrast Pseudo leptomeningeal enhancement 3 Tesla magnetic resonance imaging Sevoflurane

The role of green industrial transformation in mitigating carbon emissions:Exploring the channels of technological innovation and environmental regulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy and Built Environment 2024年第3期5卷 464-479页

作者： saima Mehmood Khalid Zaman Shiraz Khan Zohaib Ali Haroon ur rashid Khan Department of Economics The University of HaripurHaripurKhyber Pakhtunkhwa 22620Pakistan Department of Management Sciences The University of HaripurHaripurKhyber Pakhtunkhwa 22620Pakistan Department of Energy and Process Engineering(EPT) Norwegian University of Science and TechnologyHøgskoleringen 1Trondheim 7034Norway Faculty of Business The University of Wollongong in DubaiDubai 20183United Arab Emirates

The industrial sector is vital to economic progress,yet industrial pollution poses environmental and economic *** purpose of the study was to investigate the influence of green industrial transformation in re-ducing Pakistan’s carbon intensity between 1975 and *** emissions are considered an endogenous construct,while foreign direct investment(FDI)inflows,technological innovation,green industrial transforma-tion,environmental legislation,and research and development(R&D)investment are possible *** association between variables is assessed using the robust least-squares *** industrial transforma-tion is connected with lower carbon emissions,yet technical innovation,R&D investment,and inbound FDI raise a country’s carbon *** findings support the pollution haven hypothesis in a *** causality esti-mates indicate that inward FDI contributes to environmental regulations;green industrial transformation directly relates to inbound FDI and R&D expenditures;and technological innovations correspond to inbound FDI,R&D ex-penditures,industrial ecofriendly progression,and environmental *** to the impulse response function,environmental policies are anticipated to have a differential effect on carbon emissions in 2023,2024,2028-2030,while they are likely to decrease in the years 2025-2027 and 2031 ***,inward FDI and technology advancements would almost certainly result in a rise in carbon emissions over *** industrial transitions are projected to result in a ten-year reduction in carbon *** variance decomposi-tion analysis indicates that eco-friendly industrial adaptations would likely have the largest variance error shock on carbon emissions(11.747%),followed by inbound FDI,technological advancements,and regulatory changes,with R&D spending having a minimal impact over ***’s economy should foster a green industrial revolution to avoid pollution and increase environm

关键词： Carbon intensity Industrial green transformation Environmental regulations Technological innovations Robust least squares regression

Multiple rational rogue waves for higher dimensional nonlinear evolution equations via symbolic computation approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2023年第1期8卷 33-41页

作者： saima Arshed Nauman Raza Asma rashid Butt Ahmad Javid J.F.Gómez-Aguilar Department of Mathematics University of the PunjabQuaid-e-Azam CampusLahorePakistan Department of Mathematics University of Engineering and TechnologyLahorePakistan School of Natural Sciences(SNS) National University of Sciences and Technology(NUST)Islamabad 44000Pakistan CONACyT-Tecnológico Nacional de México/CENIDET Interior Internado Palmira S/NCol.PalmiraCuernavaca Morelos C.P.62490México

The paper investigates the multiple rogue wave solutions associated with the generalized Hirota-Satsuma-Ito(HSI)equation and the newly proposed extended(3+1)-dimensional Jimbo-Miwa(JM)equation with the help of a symbolic computation *** incorporating a direct variable trans-formation and utilizing Hirota’s bilinear form,multiple rogue wave structures of different orders are ob-tained for both generalized HSI and JM *** obtained bilinear forms of the proposed equations successfully investigate the 1st,2nd and 3rd-order rogue *** constructed solutions are verified by inserting them into original *** computations are assisted with 3D graphs to analyze the propagation dynamics of these rogue *** properties of these waves are governed by different parameters that are discussed in details.

关键词： Generalized Hirota-Satsuma-Ito(HSI) equation The new extended(3+1)-dimensional Jimbo-Miwaequation Symbolic computation approach Bilinear form Rogue wave solutions