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Sargassum-synthesized ZnO nanoparticles induce salt tolerance in maize plants through enhanced physiological and biochemical mechanisms
Ion–Dipole Interactions Modulated Anion-Reinforced Solvation Chemistry for Advanced Wide-Temperature Sodium-Ion Full Batteries
A systematic review and dose response meta analysis of Omega 3 supplementation on cognitive function
Time’s arrow
Long–Short-Arm Acridine Ru-Pincer Catalysts for Reversible Hydrogen Storage Based on Ethylene Glycol
Source dynamics and environmental risk of street dust as a vector of human exposure to potentially toxic elements in Istanbul, Türkiye
Pay gap between nationals and migrants mainly due to unequal access to high-paying jobs
Lattice Oxygen-Mediated CO<sub>2</sub> Photothermal Reduction with Tunable CO/H<sub>2</sub> Ratio on K-Doped Nb<sub>2</sub>O<sub>5</sub> Nanoribbons
Numerical simulation and design recommendations for prestressed steel stayed columns subjected to static and dynamic effects
Abstract This study investigates the static and dynamic behavior of prestressed steel stayed columns (PSCs), with a particular emphasis on buckling performance under both axial and seismic loading conditions. Unlike prior work that primarily focused on static response or simplified configurations, this research offers a comprehensive investigation encompassing modal analysis and time-history response under seismic excitation, providing valuable insights into the dynamic performance of PSC systems. Advanced finite element (FE) models are developed in ABAQUS using fully automated scripting that defines node coordinates and element connectivity for main columns, cross-arms, and cable stays. These models incorporate geometric and material nonlinearities and are validated against existing experimental and analytical results. A novel design configuration featuring two-level cross-arms is introduced, substantially expanding beyond the conventional single-level systems addressed in earlier studies. Through an extensive parametric study, key parameters such as cross-arm length, cable diameter, and geometric proportions are systematically examined. Based on the numerical findings, new predictive formulas are proposed to estimate the ultimate buckling capacity of two-level PSCs, supporting efficient and resilient preliminary design.
Nitric Oxide-to-Ammonia Synthesis with Nearly 100% Yield by Ambient-Pressure Thermocatalysis under Mild Temperature
Enhancing security and usability with context aware multi-biometric fusion for continuous user authentication
Abstract In this paper, we present a novel continuous authentication system that integrates keystroke dynamics and gait biometrics through a multi-modal fusion framework. The proposed system dynamically adjusts the importance of each biometric modality using the Context-Driven Multi-Biometric Scoring Algorithm (CMBSA), enabling it to adapt to real-time contextual factors such as user behavior and system configuration. Keystroke dynamics are processed using Wavelet Transform Filtering (WTF) to improve feature extraction, while gait data is refined with an Autocorrelation (AC) Filter to ensure the use of reliable gait segments. Experimental results demonstrate that the multi-modal fusion approach significantly enhances authentication accuracy, achieving a combined accuracy of 98.25% and an Equal Error Rate (EER) of 2.35%. The system provides seamless and non-intrusive authentication, ensuring high security and improved usability across different contexts. This research contributes to the development of adaptive, context-aware biometric systems, advancing both security and user experience in real-world applications.