Mathematical modeling of electroosmotic flow and thermal transport in stenotic tapered arteries using finite difference method

Modern Physics Letters B, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

This study investigates the electroosmotic flow and thermal transport of nanofluids, specifically aluminum oxide titanium dioxide, within tapered arteries with stenosis. Using finite difference method (FDM), we modeled dynamics heat transfer mechanisms under assumption low Reynolds numbers mild The focuses on effects nanoparticle volume fraction, absorption parameters, forces blood flow, velocity profiles, temperature distribution. Results show that increasing concentration significantly reduce velocity, particularly in divergent artery geometries. Additionally, inclusion enhances transfer, while Grashof number influences central velocity. These findings offer valuable insights into optimizing nanoparticle-based therapeutic interventions for cardiovascular treatments, providing a framework enhancing drug delivery systems improving efficacy heat-based therapies. study’s outcomes could lead to improved diagnostic tools strategies managing diseases.

Язык: Английский

---

Precise localization method for faulty idlers in belt conveyors based on visual and auditory bimodal fusion

Structural Health Monitoring, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

Idlers are key load-bearing components in belt conveyors, and their proper functioning is essential for ensuring the continuous efficient operation of bulk material transportation systems. Traditional methods monitoring idler health typically based on a single modality, such as sound or vibration, which has limitations range accuracy. This study presents novel method accurately locating faulty idlers by fusing image audio modalities. approach achieves pixel-level segmentation guided signals, addressing image-only methods, cannot detect sources, sound-only struggle with accurate localization. Specifically, this work proposes module converting one-dimensional features into two-dimensional features, correlating spatially aligning pixel module. These innovations enhance both accuracy fault detection. Experimental results demonstrate that proposed high detection strong anti-interference capability, enabling precise localization sounding large field view. With mean intersection over union (MIOU) evaluation metric, algorithm 73.8% custom dataset shows robust performance even under noise interference. plays significant role advancing effective integration multisource heterogeneous information improving intelligent management conveyor systems complex environments. Our source code available at https://github.com/jisi123/Belt-conveyor .

Язык: Английский

---

How does investor sentiment impact systemic risk contagion across industries? Evidence from the Chinese stock market

Applied Economics, Год журнала: 2025, Номер unknown, С. 1 - 23

Опубликована: Янв. 29, 2025

This study uses daily data across 24 sectors in China to investigate the contagion effect of systemic risk among industries. The include industry returns, sentiment and marginal expected shortfalls (MES) from 1 January 2016 31 December 2022. A multi-source heterogeneous (MSH) fusion method an empirical Bayesian approach are employed construct MSH build a complex network based on graphical Gaussian model. findings confirm high positive correlations significant clustering industries Chinese stock market due upstream downstream supply chains shareholding relationships. Moreover, reveals that is significantly associated with extreme events dissemination investor sentiment. We calculate industry's receiver (SSR) index, rank their SSR index values select 10 highest ranked as systemically important offers valuable insights for regulators policymakers seeking bolster macro-prudential oversight implement targeted supervision initiatives.

Язык: Английский

---

A new performance evaluation model based on approximate belief rule base with local uncertainty

Advanced Engineering Informatics, Год журнала: 2025, Номер 65, С. 103225 - 103225

Опубликована: Март 3, 2025

Язык: Английский

---

Image Segmentation Refinement Based on Region Expansion and Minor Contour Adjustments

IET Image Processing, Год журнала: 2025, Номер 19(1)

Опубликована: Янв. 1, 2025

ABSTRACT In high‐precision image segmentation tasks, even slight deviations in the results can bring about significant consequences, especially certain application areas such as medical imaging and remote sensing classification. The precision of has become main factor limiting its development. Researchers typically refine algorithms to enhance accuracy, but it is challenging for any improvement strategy be effectively applied images different objects scenes. To address this issue, we propose a two‐step refinement method segmentation, comprising region expansion minor contour adjustments. First, design an adaptive gradient thresholding module provide gradient‐based constraints process. Next, iteratively refines each segmented based on colour differences thresholds. Finally, adjustments leverages local strong features positions further. This integrates region‐level pixel‐level information various results. was BSDS500, Cells, WHU Building datasets. demonstrate that refined closed contours align more closely with ground truth, most notable observed at inflection points (corner points). Among results, Cells dataset showed F‐score increasing from 87.51% 89.73% IoU 86.83% 88.40%.

Язык: Английский

---

Adaptive Dynamic Programming with Event-Triggered Sampling Control for Path Following of Autonomous Vehicles

Journal of Advanced Computational Intelligence and Intelligent Informatics, Год журнала: 2025, Номер 29(2), С. 316 - 324

Опубликована: Март 19, 2025

Sampled-data control for dynamic programming of continuous-time system, which can facilitate to implement actions under networked environments, is rarely considered in most existing works. In order address this issue, an event-triggered sampling (ET-DPSC) approach investigated path-following autonomous vehicles. The first goal establish the sampled-data-based model using Hamilton–Jacobi–Bellman equation. Secondly, asymptotic stability criterion input-to-state sense should be tackled by exploiting Lyapunov theory and input delay approach. As a third goal, sampled-data controller based on method synthesized. Compared ADP-based strategies, proposed ET-DPSC not only guarantees but also provides significant benefits implementation communication-constrained environments. addition, Zeno behavior naturally excluded periodic discrete-time fashion. At last, Simulink CarSim joint simulations are conducted show effectiveness scheme comparing with linear quadratic regulation without considering delay.

Язык: Английский

---

Fault-tolerant distributed fusion of PDFs using KLDs-induced functional FCM clustering

Chinese Journal of Aeronautics, Год журнала: 2025, Номер unknown, С. 103520 - 103520

Опубликована: Март 1, 2025

Язык: Английский

---

Hybrid dense net 201 with CBPN based image pixel enhancement and optimized ADBGAN for image copy-move forgery detection

Signal Image and Video Processing, Год журнала: 2025, Номер 19(6)

Опубликована: Апрель 5, 2025

Язык: Английский

---

Association rule-based classification: A comprehensive review of methodologies and applications

Expert Systems with Applications, Год журнала: 2025, Номер unknown, С. 127454 - 127454

Опубликована: Апрель 1, 2025

Язык: Английский

---

Extrapolating from one: A pseudo multi-view fusion approach for enhanced out-of-distribution detection in fault diagnosis

Mechanical Systems and Signal Processing, Год журнала: 2025, Номер 231, С. 112661 - 112661

Опубликована: Апрель 8, 2025

Язык: Английский

---