diffusion models

Thermal behavior and oxidation kinetics of coal gangue under varying moisture conditions: An experimental and predictive modeling study

Turing-Hopf bifurcation of a delayed predator-prey system with prey-taxis incorporating a Beddington-DeAngelis functional response

In this paper, we investigate the spatiotemporal pattern dynamics in a delayed predator-prey model with prey-taxi. First, Turing bifurcation for the reaction-diffusion-prey-taxis model are analyzed and the conditions for it is obtained. By deriving an amplitude equation, we then classify the bifurcation as supercritica...

Editorial: Imaging to guide treatment in brain tumors

Brain tumors are highly heterogeneous, resulting in various malignancy grades, but also a high variability in imaging phenotypes. From diagnosis to long-term follow-up, clinicians need imaging to provide more than a lesion's size and location. They need to understand the characteristics of the tumor, how it will behave...

MR Imaging and Radiomics Features for Predicting Variant Histology of Bladder Cancer: A Single Centre Retrospective Analysis

ABSTRACT Introduction Compare MRI features of bladder variant histology (VH) and pure urothelial carcinoma (UC) and determine if MRI radiomics features can predict VH. Methods In this retrospective study, cystectomy pathology database search yielded 37 patients with tumours with more than 50% VH and preoperative MRI's....

FinTech Awareness and Adoption Intention Toward AI-Enabled Mastercard Digital Payment Solutions in Bangladesh

Digital payment systems increasingly combine card networks, mobile interfaces, contactless technologies, automated risk controls and data-driven services. In this environment, consumers’ awareness of financial technology may shape how they perceive the advantages of digital payment and whether they intend to adopt or i...

Research on farmers’ decision-making mechanism for the adoption of agricultural green production technologies: an evolutionary game analysis

The adoption of Agricultural Green Production Technologies (AGPT) by farmers is a complex and dynamic process involving multiple stakeholders, whose active participation is essential for promoting the diffusion and adoption of AGPT. This study incorporates government, banks, farmers, and agricultural technology service...

HOS-PV 2.0: Exceeding the Shockley-Queisser Limit via Chiral-Induced Spin Selectivity, Dexter-Sensitized Singlet Fission, and Altermagnetic Carrier Extraction

Single-junction photovoltaic devices are fundamentally constrained by the Shockley-Queisser (SQ) thermodynamic limit (η_SQ ≈ 33.7%), primarily dictated by sub-bandgap transmission losses and the ultrafast thermalization of hot photogenerated carriers. In disordered organic photovoltaics (OPV), practical efficiency is f...

Adoption, Impacts and Barriers to Decentralised Solar Energy in a Tribal Region: Evidence from Dungarpur and Banswara Districts of Southern Rajasthan, India

This study examines the extent and pattern of decentralised solar energy adoption in the predominantly tribal districts of Dungarpur and Banswara in southern Rajasthan, India (twenty villages across ten tehsils), measures its economic and social effects, identifies barriers constraining wider uptake, and assesses wheth...

Tumor growth simulation using the multigrid method

A multigrid method is applied to accelerate the numerical solution of a nonlinear coupled system of partial differential equations modeling avascular tumor growth. The model describes the interaction between tumor cell density, extracellular matrix, matrix-degrading enzymes, and their inhibitors, incorporating diffusio...

Perceived Value and Adoption Intention of Enterprise AI Solutions in Bangladesh: Integrating the Technology Acceptance Model and Diffusion of Innovations Theory

Enterprise artificial intelligence (AI) adoption is increasingly framed as a value-realisation problem rather than a simple question of whether users are willing to try new technologies. This study examines perceived value and adoption intention for enterprise AI/cloud solutions among technology-oriented respondents in...

Coupled Prediction of Grout Diffusion and Ground-Surface Heave During Fracture Grouting in Layered Soil

To establish a quantitative link between grout propagation and ground-surface heave in grouting-based settlement remediation, this study proposes a semi-analytical framework based on energy balance and volume conservation. The equivalent diffusion radius is first solved from an energy balance that partitions effective...

Simplifying assumptions made by contrail–cirrus models lead to irreconcilable differences in geometric and optical contrail properties

Abstract. Targeted flight rerouting for contrail avoidance relies on computational models to predict which avoidance actions would provide the most warming reduction. In the absence of empirical data for model validation, we propose using intercomparison to evaluate whether the lifetime total extinction of contrails (a...