Results 41 to 50 of about 2,723,796 (303)

Improving the adversarial transferability with relational graphs ensemble adversarial attack

Frontiers in Neuroscience, 2023
In transferable black-box attacks, adversarial samples remain adversarial across multiple models and are more likely to attack unknown models. From this view, acquiring and exploiting multiple models is the key to improving transferability.
Jiatian Pi, Chaoyang Luo, Fen Xia, Ning Jiang, Haiying Wu, Zhiyou Wu   +5 more
doaj   +1 more source

Two examples of non strictly convex large deviations [PDF]

, 2016
We present two examples of a large deviations principle where the rate function is not strictly convex. This is motivated by a model used in mathematical finance (the Heston model), and adds a new item to the zoology of non strictly convex large ...
De Marco, S, Jacquier, A, Roome, P
core   +3 more sources

Polynomial Diffusions and Applications in Finance

, 2016
This paper provides the mathematical foundation for polynomial diffusions. They play an important role in a growing range of applications in finance, including financial market models for interest rates, credit risk, stochastic volatility, commodities ...
Filipovic, Damir, Larsson, Martin
core   +1 more source

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

Advanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel, Andreas Schuster, Felix Schoenitz, Jean Lefèvre   +3 more
wiley   +1 more source

Global existence of classical solutions for two-dimensional isentropic compressible Navier–Stokes equations with small initial mass

Advances in Difference Equations, 2020
In this paper, we consider the initial-boundary value problem of two-dimensional isentropic compressible Navier–Stokes equations with vacuum on the square domain.
Wei Li, Zhaoyang Shang, Fuquan Tang
doaj   +1 more source

The Calibration of Some Stochastic Volatility Models Used in Mathematical Finance

, 2014
Stochastic volatility models are used in mathematical finance to describe the dynamics of asset prices. In these models, the asset price is modeled as a stochastic process depending on time implicitly defined by a stochastic differential Equation.
L. Fatone, F. Mariani, M. C. Recchioni, F. Zirilli   +3 more
semanticscholar   +1 more source

Experimental Analysis and Physics‐Based Analytical Model on Twisted and Coiled Artificial Muscles

Advanced Engineering Materials, EarlyView.
Twisted and coiled artificial muscles made from silver‐coated nylon fibers are investigated through experiments and analytical modeling. The actuators achieve contractions up to 19.3% and specific work of 8 kJ kg−1, though efficiency remains limited (≈0.15%) by thermal losses.
Salvatore Garofalo, Chiara Morano, Leonardo Pagnotta, Luigi Bruno   +3 more
wiley   +1 more source

Stability of central finite difference schemes for the Heston PDE

, 2010
This paper deals with stability in the numerical solution of the prominent Heston partial differential equation from mathematical finance. We study the well-known central second-order finite difference discretization, which leads to large semi-discrete ...
A Böttcher, A Lipton, D Tavella, E Hairer, E Hairer, JC Butcher, K Volders, Karel J. in ’t Hout, Kim Volders, KJ in ’t Hout, LN Trefethen, P Wilmott, SE Shreve, SL Heston, W Hundsdorfer   +14 more
core   +1 more source

Internal Temperature Evolution Metrology and Analytics in Li‐Ion Cells

Advanced Functional Materials, EarlyView.
This study investigates the non‐linear evolution of internal temperatures across diverse operating conditions, highlighting the disparities between internal and external measurements and the resulting thermal asymmetries. The coupled thermo‐electrochemical modeling framework provides a comprehensive analysis of various heat generation modes, examining ...
Anuththara S. J. Alujjage, Bairav S. Vishnugopi, Avijit Karmakar, David P. Magee, Yevgen Barsukov, Partha P. Mukherjee   +5 more
wiley   +1 more source

Global existence and exponential decay of strong solutions for the three-dimensional Boussinesq equations

Journal of Inequalities and Applications, 2020
In this paper, we consider the global existence of strong solutions to the three-dimensional Boussinesq equations on the smooth bounded domain Ω. Based on the blow-up criterion and uniform estimates, we prove that the strong solution exists globally in ...
Zhaoyang Shang, Fuquan Tang
doaj   +1 more source