Buscador de Tesis y publicaciones académicas

Metric entropy and homoclinic growth rate

Liao, Gang · Wei, Jing

In this paper, we investigate the relationship between chaos and homoclinic orbits from a quantitative perspective. Let f be a C^r diffeomorphism (r > 1) on a compact Riemannian manifold preserving an ergodic hyperbolic measure. We show that the homoclinic growth rate is bounded below by the metric entropy. This result...

A hybrid ABM-PDE framework for real-world infectious disease simulations

Kristina Kehrer · Tim O.F. Conrad

This paper presents a hybrid modeling approach that couples an Agent-Based Model (ABM) with a partial differential equation (PDE) model in an epidemic setting to simulate the spatial spread of infectious diseases using a compartmental structure with seven health states. The goal is to reduce the computational complexit...

CodY constrains β-cypermethrin degradation by regulating physiological adaptation and soil ecological performance in Bacillus cereus GW-01

Lei, Ying · Tang, Ying · Wei, Enting · He, Mengyan · y 7 más

β-cypermethrin (β-CY) is a widely used pyrethroid insecticide, yet the regulatory mechanisms that determine microbial degradation efficiency remain unclear. Here, we examined the role of the global nutrient-responsive regulator CodY in β-CY degradation by Bacillus cereus GW-01 using a wild-type strain, an in-frame codY...

From conventional multi-vendor failover to adaptive API routing: An industrial experience report on resilient third-party service integration

Nataraj Agaram Sundar · Tejas Morabia

High-scale online services often rely on third-party APIs in user-facing flows such as authentication, messaging, payments, fraud detection, and identity verification. Integrating alternate providers and operating conventional failover controls is a common resilience baseline, but redundancy alone does not make provide...

Geometric approximation for the number of returns of a transient Markov chain to its origin

Daly, Fraser · Shneer, Seva

Given a discrete-time, transient Markov chain, we establish explicit total variation error bounds in the approximation of the number of visits to its starting state within the first $n$ time steps by a geometric distribution. Our error bounds are expressed in terms of the heat kernel of the Markov chain. As application...

Combining suspect screening and advanced flow analysis for the investigation of UV-light exposed microplastics: Automatic dynamic bioaccessibility tests of plasticizers and degradation products

Alexandra Sixto · Magdalena Pons · Ali Sahragard · Ramón Pujol · y 2 más

There is a quest for investigating the effect of microplastics (MPs) aging on the human bioaccessibility of plastic additives and the degradation products thereof. In this study, polyethylene (PE) certified reference MPs containing eight phthalate congeners with distinct polarities, ranging from dimethyl phthalate (DMP...

Detection of geosmin using an aptamer-functionalized LSPR chip integrated with a microfluidic platform

Vivek Semwal · Ole Bang · Jakob Janting

In this paper, we report the development of a localized surface plasmon resonance (LSPR)-based sensor for the detection of geosmin. The LSPR chip was fabricated with 80 nm gold nanoparticles (AuNPs), followed by surface functionalization with a geosmin-specific aptamer. The functionalized chip was integrated into a mic...

Gradient estimates for (p,V)-harmonic functions on Riemannian manifolds

Yuxin Dong · Hezi Lin · Weihao Zheng

In this paper, we study $(p,V)$-harmonic functions on complete Riemannian manifolds using the Moser iteration method. A volume comparison theorem and a Sobolev embedding theorem are established under the Bakry-$\acute{E}$mery curvature condition. Moreover, we obtain an explicit global gradient estimate for positive ent...

Design and analysis of an improved constrained hypercube mixer in quantum approximate optimization algorithm

Arkadiusz Wołk · Karol Capała · Katarzyna Rycerz

The Quantum Approximate Optimization Algorithm (QAOA) is expected to offer advantages over classical approaches when solving combinatorial optimization problems in the Noisy Intermediate-Scale Quantum (NISQ) era. In its standard formulation, however, QAOA is not suited for constrained problems. One way to incorporate c...

What drives versus what is required: Sufficient and necessary conditions for consumer intention in an unfamiliar wellness service

Lebrument, Norbert · Zumbo-Lebrument, Cédrine · Rochette, Corinne