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Coherent radio emission in pulsars is excited due to instabilities in a relativistically streaming non-stationary plasma flow, which is generated from sparking discharges in the inner acceleration region (IAR) near the stellar surface. A…

高能天体物理现象 · 物理学 2020-06-10 Rahul Basu , Dipanjan Mitra , George I. Melikidze

Brownian particles interacting sequentially with distinct temperatures and driving forces at each stroke have been tackled as a reliable alternative for the construction of engine setups. However they can behave very inefficiently depending…

统计力学 · 物理学 2022-12-28 Iago N. Mamede , Angel L. L. Stable , C. E. Fiore

The number of electrified powertrains is ever increasing today towards a more sustainable future; thus, it is essential that unwanted failures are prevented, and a reliable operation is secured. Monitoring the internal temperatures of…

机器学习 · 计算机科学 2025-04-28 Dinan Li , Panagiotis Kakosimos

We consider the rates of noise-induced switching between the stable states of dissipative dynamical systems with delay and also the rates of noise-induced extinction, where such systems model population dynamics. We study a class of systems…

统计力学 · 物理学 2015-01-27 Ira B. Schwartz , Lora Billings , Thomas W. Carr , Mark Dykman

Indirect noise is a significant contributor to aircraft engine noise, which needs to be minimized in the design of aircraft engines. Indirect noise is caused by the acceleration of flow inhomogeneities through a nozzle. High-fidelity…

流体动力学 · 物理学 2023-06-28 Animesh Jain , Andrea Giusti , Luca Magri

A numerical model is built, simulating the principles of kinetic gas theory, to predict pressures of molecules in a spherical pressure vessel; the model tracks a single particle and multiplies the force on the spherical walls by a mole of…

统计力学 · 物理学 2026-03-31 Matthew Marko

The present study addresses the role of molecular non-equilibrium effects in thermal ignition problems. We consider a single binary reaction of the form A+B -> C+C. Molecular dynamics calculations were performed for activation energies…

化学物理 · 物理学 2019-04-17 R. Murugesan , N. Sirmas , M. I. Radulescu

By modelling heat engines as driven multi-partite system we show that their dissipation can be expressed in terms of the lag (relative entropy) between the perturbed state of each partition and their equilibrium state, and the correlations…

统计力学 · 物理学 2016-07-19 Michele Campisi , Rosario Fazio

In order to stabilize the behavior of noisy systems, confining it around a desirable state, an effort is required to suppress the intrinsic noise. This noise suppression task entails a cost. For the important case of thermal noise in an…

统计力学 · 物理学 2009-02-26 Giovanni Volpe , Jan Wehr , Dmitri Petrov , J. Miguel Rubi

We provide a strategy for an exact inference of the average as well as the fluctuations of the entropy production in non-equilibrium systems in the steady state, from the measurements of arbitrary current fluctuations. Our results are built…

统计力学 · 物理学 2020-03-24 Sreekanth K Manikandan , Deepak Gupta , Supriya Krishnamurthy

Noise-induced phase transitions are common in various complex systems, from physics to biology. In this article, we investigate the emergence of crucial events in noise-induced phase transition processes and their potential significance for…

数据分析、统计与概率 · 物理学 2023-06-28 Jacob D. Baxley , David R. Lambert , Mauro Bologna , Bruce J. West , Paolo Grigolini

Every engine, let it internal combustion engine in car or turbine of airplane, needs a high quality fuel igniter. During last decades there have been some minor changes made in ignition systems, like invention of Capacitive Discharge…

等离子体物理 · 物理学 2026-04-07 Andis Dembovskis

Resolving fluid transport at engine surfaces is required to predict transient heat loss, which is becoming increasingly important for the development of high-efficiency internal combustion engines (ICE). The limited number of available…

流体动力学 · 物理学 2020-09-04 Carl-Philipp Ding , Brian Peterson , Marius Schmidt , Andreas Dreizler , Benjamin Böhm

The need for improved engine efficiencies has motivated the development of high-pressure combustion systems, in which operating conditions achieve and exceed critical conditions. Associated with these conditions are strong variations in…

流体动力学 · 物理学 2018-09-25 Matthias Ihme , Peter C. Ma , Luis Bravo

We study the activation process in large assemblies of type II excitable units whose dynamics is influenced by two independent noise terms. The mean-field approach is applied to explicitly demonstrate that the assembly of excitable units…

混沌动力学 · 物理学 2016-04-19 Igor Franović , Matjaz Perc , Kristina Todorović , Srđan Kostić , Nikola Burić

Spike generation in neurons produces a temporal point process, whose statistics is governed by intrinsic phenomena and the external incoming inputs to be coded. In particular, spike-evoked adaptation currents support a slow temporal process…

神经元与认知 · 定量生物学 2016-10-31 Eugenio Urdapilleta

We have studied the entropy-driven mechanism leading to stationary patterns formation in stochastic systems with local dynamics and non-Fickian diffusion. We have shown that a multiplicative noise fulfilling a fluctuation-dissipation…

统计力学 · 物理学 2008-06-20 D. O. Kharchenko , S. V. Kokhan , A. V. Dvornichenko

Catalyst impregnation is one of the most crucial steps for preparing industrial catalysts. The inter-particle variability of the impregnated liquid inside the particles significantly affects the activity and selectivity of the catalyst.…

流体动力学 · 物理学 2023-07-28 Maria Silvina Tomassone , Yangyang Shen , Bill Borghard , Bryant Avila , Hernan Makse

Modern technologies could soon make it possible to investigate the operation cycles of quantum heat engines by counting the photons that are emitted and absorbed by their working systems. Using the quantum jump approach to open-system…

统计力学 · 物理学 2020-09-29 Paul Menczel , Christian Flindt , Kay Brandner

By considering general Markov stochastic dynamics and its coarse-graining, we study the framework of stochastic thermodynamics for the original and reduced descriptions corresponding to different scales. We are especially concerned with the…

统计力学 · 物理学 2015-01-29 Yohei Nakayama , Kyogo Kawaguchi