Results 121 to 130 of about 100,249 (259)

Solutions to a model for compressible immiscible two phase flow in porous media

Electronic Journal of Differential Equations, 2010
In this article, we study the existence of solutions to a nonlinear degenerate system modelling the displacement of two-phase compressible immiscible flow in a three dimensional porous media.
Ziad Khalil, Mazen Saad
doaj  

MDSGene Systematic Review of Common Forms of Dominant Hereditary Spastic Paraplegia: Novel Insights

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Hereditary spastic paraplegia (HSP) is a neurodegenerative disorder characterized by progressive spasticity and lower limb weakness. The most common forms of autosomal dominant HSP are caused by pathogenic variants in SPAST (SPG4 or HSP‐SPAST), ATL1 (SPG3A or HSP‐ATL1), and REEP1 (SPG31 or HSP‐REEP1).
Ce Kang, Rajasumi Rajalingam, Zachary Walls, Jana Huang, Christine Sun, Laura I. Rudaks, Dennis Yeow, Ashar Rasheed, Jenny W. Zhang, Moath Hamed, Marianthi Breza, Susen Schaake, Chetan Vekhande, Jason Massa, Robyn E. Massa, Aakash Shetty, Carolyn M. Sue, Franca Cambi, Oksana Suchowersky, Franca Vulinovic, Sonja Petkovic, Christine Klein, Katja Lohmann, Connie Marras, Kishore R. Kumar   +24 more
wiley   +1 more source

Non-simultaneous blow-up for a semilinear parabolic system with nonlinear memory [PDF]

Surveys in Mathematics and its Applications, 2007
In this note, we study the possibility of non-simultaneous blow-up for positive solutions to the following system:ut - ∆u = uq1∫0t vp1(x,s) ds, vt - ∆v = vq2∫0t up2(x,s) ds Under appropriate hypotheses, we prove that u blows up while v fails to blow up
Jun Zhou
doaj  

Existence Analysis of a Three‐Species Memristor Drift‐Diffusion System Coupled to Electric Networks

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The existence of global weak solutions to a partial‐differential‐algebraic system is proved. The system consists of the drift‐diffusion equations for the electron, hole, and oxide vacancy densities in a memristor device, the Poisson equation for the electric potential, and the differential‐algebraic equations for an electric network.
Ansgar Jüngel, Tuấn Tùng Nguyến
wiley   +1 more source

Numerical Investigation of a Diffusive SIR Model: Focus on Positivity Preservation

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we consider a system of semilinear partial differential equations (PDEs) representing a spatially extended SIR epidemic model. A brief analytical investigation of the well‐posedness and positivity of the solutions is provided in the appendix, while the main focus is on the numerical treatment of the model.
Rahele Mosleh, Claudia Panico, Messoud Efendiyev   +2 more
wiley   +1 more source

Temporal homogenization of a nonlinear parabolic system

, 2018
In this paper we develop are two-scale model for a nonlinear parabolic system. Assuming a rapidly oscillating inhomogeneity with period ε for one equation we carry out a formal periodic expansion to obtain a homogenized equation coupled to a local in time cell problem.
Yu, Jie, Hömberg, Dietmar, Petzold, Thomas, Lu, Shuai   +3 more
openaire   +2 more sources

Exploring the Drivers of Ecological Sustainability: Insights From the World's Top SDGs Performers

Sustainable Development, EarlyView.
ABSTRACT This article investigates the impact of climate technologies, financial inclusion, renewable energy, and economic growth on the environmental sustainability of the five world's top the Sustainable Development Goals (SDGs) performers. Utilizing a newly compiled panel dataset, the analysis employs the load capacity factor as a proxy for ...
Abdullah Emre Caglar, Ismail Demirdag, Qasim Raza Syed, Mehmet Akif Destek   +3 more
wiley   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Moment‐curvature behavior of continuous reinforced concrete slab strips—Experimental determination and modeling

Structural Concrete, EarlyView.
Abstract With the market introduction of new reinforcing materials, such as corrosion‐resistant steel, the effect of their stress–strain relationship on the ductility of reinforced concrete structures needs to be evaluated. Their moment‐curvature behavior significantly influences bending moment redistributions, rotation capacity, and deformation at ...
Nathalie Reckinger, Karel Thoma, Walter Kaufmann   +2 more
wiley   +1 more source

Research of Compatibility of the Redefined System for the Multidimensional Nonlinear Heat Equation (Special Case)

Известия Иркутского государственного университета: Серия "Математика", 2016
In paper the multidimensional equation of nonlinear heat conductivity is investigated. This equation is presented in the form of the overdetermined system of the differential equations with partial derivatives (the number of the equations are more than ...
G. Rudykh, E. Semenov
doaj