Results 51 to 60 of about 508,325 (367)

A relative entropy rate method for path space sensitivity analysis of stationary complex stochastic dynamics [PDF]

, 2012
We propose a new sensitivity analysis methodology for complex stochastic dynamics based on the Relative Entropy Rate. The method becomes computationally feasible at the stationary regime of the process and involves the calculation of suitable observables
Degasperi A., Dumitrescu M. E., Frenkel D., Janssen J., Kaplan I., Lutz K. A., Majda A. J., Markos A. Katsoulakis, Plimpton S., Rapaport D. C., Saltelli A., Yannis Pantazis   +11 more
core   +2 more sources

A Soft Microrobot for Single‐Cell Transport, Spheroid Assembly, and Dual‐Mode Drug Screening

Advanced Materials, EarlyView.
A soft, untethered hydrogel microrobot enables precise single‐cell delivery, self‐assembly into 3D spheroids, and real‐time thermal actuation. Driven by light‐induced convection and embedded with gold nanorods and temperature sensors, the microrobot guides cells, modulates local microenvironments, and supports drug testing.
Philipp Harder, Nergishan İyisan, Yukun Wang, Berna Özkale   +3 more
wiley   +1 more source

A generalized white noise space approach to stochastic integration for a class of Gaussian stationary increment processes [PDF]

Opuscula Mathematica, 2013
Given a Gaussian stationary increment processes, we show that a Skorokhod-Hitsuda stochastic integral with respect to this process, which obeys the Wick-Itô calculus rules, can be naturally defined using ideas taken from Hida's white noise space theory ...
Daniel Alpay, Alon Kipnis
doaj   +1 more source

Pathwise Sensitivity Analysis in Transient Regimes

, 2015
The instantaneous relative entropy (IRE) and the corresponding instanta- neous Fisher information matrix (IFIM) for transient stochastic processes are pre- sented in this paper.
A Saltelli, B Oksendal, B Schoeberl, BN Kholodenko, C Kipnis, D Kim, David F Anderson, H Meskine, HB Liu, J DiStefano III, M Baiesi, M Nakayama, M Rathinam, N Limnios, N Moghal, PO Hackel, PW Glynn, PW Sheppard, RS Liptser, S Kullback, S Plyasunov, SM Kay, T Cover, Y Pantazis   +23 more
core   +1 more source

Emergent Motility of Self‐Organized Particle‐Giant Unilamellar Vesicle Assembly

Advanced Materials, EarlyView.
Giant unilamellar vesicles (GUVs), when combined with silica particles under alternating electric fields, spontaneously self‐assemble into motile structures. Asymmetric particle decoration induces fluid flows that propel the assemblies, enabling persistent motion and reversible control.
Selcan Karaz, Gaurav Gardi, Mertcan Han, Saadet Fatma Baltaci, Mukrime Birgul Akolpoglu, Metin Sitti   +5 more
wiley   +1 more source

Equilibration of multitime quantum processes in finite time intervals

SciPost Physics Core, 2023
A generic non-integrable (unitary) out-of-equilibrium quantum process, when interrogated across many times, is shown to yield the same statistics as an (non-unitary) equilibrated process. In particular, using the tools of quantum stochastic processes, we
Neil Dowling, Pedro Figueroa-Romero, Felix A. Pollock, Philipp Strasberg, Kavan Modi
doaj   +1 more source

Membrane Semi‐Permeability and Ion Selectivity in Chemiosmosis: Open Systems Volume Dependence of Electrolyte Chemistry

Advanced Materials Interfaces, EarlyView.
Very small cellular compartments can break electroneutrality and harness proton gradients without active transport structures, whereas larger volumes cannot, underscoring why life's critical energy processes are confined in microscopic spaces. ABSTRACT The effect of pH changes in external ionic solutions on liposomes entrapping non‐permeable weak acid ...
Josep M. Ribó, Isabel Herreros, David Hochberg, Federico Morán, Michael Stich   +4 more
wiley   +1 more source

A group action on increasing sequences of set-indexed Brownian motions

Modern Stochastics: Theory and Applications, 2015
We prove that a square-integrable set-indexed stochastic process is a set-indexed Brownian motion if and only if its projection on all the strictly increasing continuous sequences are one-parameter G-time-changed Brownian motions.
Arthur Yosef
doaj   +1 more source

Taylor Dispersion with Adsorption and Desorption

, 2012
We use a stochastic approach to show how Taylor dispersion is affected by kinetic processes of adsorption and desorption onto surfaces. A general theory is developed, from which we derive explicitly the dispersion coefficients of canonical examples like ...
Bénichou, Olivier, Levesque, Maximilien, Rotenberg, Benjamin, Voituriez, Raphaël   +3 more
core   +3 more sources

Advanced Design for Weakly Coupled Resonators by Automatic Active Optimization

Advanced Materials Technologies, EarlyView.
An Automatic Active Optimization (AAO) strategy integrates machine learning predictors and genetic algorithms in a closed‐loop workflow. By iteratively expanding its dataset with new discoveries, AAO overcomes the limits of conventional methods. This approach finds superior microstructural designs beyond the initial sample space. We demonstrate this on
Wei Yue, Yuan Gao, Fanping Sui, Jason Wang, Megan Teng, Peggy Tsao, Huicong Deng, Yande Peng, Liwei Lin   +8 more
wiley   +1 more source