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The modeling of convection is a long standing problem in stellar physics. Up-to-now, all ad hoc models rely on a free parameter alpha (among others) which has no real physical justification and is therefore poorly constrained. However, a…

太阳与恒星天体物理 · 物理学 2024-01-30 L. Manchon , M. Deal , M. -J. Goupil , A. Serenelli , Y. Lebreton , J. Klevas , A. Kučinskas , H. -G. Ludwig , J. Montalbán , L. Gizon

Jet quenching measurements using leading particles and their correlations suffer from known biases, which can be removed via direct reconstruction of jets in central heavy ion collisions. In this talk, we discuss several modern jet…

核实验 · 物理学 2008-09-10 Sevil Salur

The measurement of the arrival time of a particle, such as a lepton, a photon, or a pion, reaching the detector provides valuable information. A similar measurement for a hadronic final state, however, is much more challenging as one has to…

高能物理 - 唯象学 · 物理学 2022-01-10 Wen Han Chiu , Zhen Liu , Matthew Low , Lian-Tao Wang

In recent years, there has been a proliferation of wide-field sky surveys to search for a variety of transient objects. Using relatively short focal lengths, the optics of these systems produce undersampled stellar images often marred by a…

天体物理学 · 物理学 2009-11-13 Fang Yuan , Carl W. Akerlof

The size of non-perturbative corrections to high E_T jet production in deep-inelastic scattering is reviewed. Based on predictions from fragmentation models, hadronization corrections for different jet definitions are compared and the model…

高能物理 - 唯象学 · 物理学 2007-05-23 M. Wobisch , T. Wengler

Recent observations as well as theoretical studies of YSO jets suggest the presence of two steady components: a disk wind type outflow needed to explain the observed high mass loss rates and a stellar wind type outflow probably accounting…

星系天体物理 · 物理学 2015-05-13 T. Matsakos , S. Massaglia , E. Trussoni , K. Tsinganos , N. Vlahakis , C. Sauty , A. Mignone

Recent measurements of jet structure modifications at RHIC and LHC highlight the importance of differential measurements to study the nature of jet quenching. Since these jet structure observables are intimately dependent on parton…

高能物理 - 实验 · 物理学 2019-03-29 Raghav Kunnawalkam Elayavalli

The cross-entropy (CE) method is simple and versatile technique for optimization, based on Kullback-Leibler (or cross-entropy) minimization. The method can be applied to a wide range of optimization tasks, including continuous, discrete,…

统计计算 · 统计学 2015-03-09 Tim Benham , Qibin Duan , Dirk P. Kroese , Benoit Liquet

We describe a general method of calculating the fully differential cross section for the production of jets at next-to-leading order in a hadron collider. This method is based on a `crossing' of next-to-leading order calculations with all…

高能物理 - 唯象学 · 物理学 2008-11-26 Walter T. Giele , E. W. Nigel Glover , David A. Kosower

In previous work we introduced a trajectory detection module that can provide summarized representations of vessel trajectories by consuming AIS positional messages online. This methodology can provide reliable trajectory synopses with…

计算机视觉与模式识别 · 计算机科学 2020-05-13 Giannis Fikioris , Kostas Patroumpas , Alexander Artikis

The differential charged jet cross sections, jet fragmentation distributions, and jet shapes are measured in minimum bias proton-proton collisions at centre-of-mass energy $\sqrt{s}=7$ TeV using the ALICE detector at the LHC. Jets are…

核实验 · 物理学 2015-10-14 ALICE Collaboration

The cross-entropy method is a simple but efficient method for global optimization. In this paper we provide two online variants of the basic CEM, together with a proof of convergence.

机器学习 · 计算机科学 2008-01-15 Istvan Szita , Andras Lorincz

This paper presents the application of a variety of techniques to study jet substructure. The performance of various modified jet algorithms, or jet grooming techniques, for several jet types and event topologies is investigated for jets…

高能物理 - 实验 · 物理学 2013-10-28 ATLAS Collaboration

Problem definition: Data-driven models in machine learning have enabled efficient management of production systems. However, a majority of machine learning models are devoted to modeling the mean response or average pattern, which is…

应用统计 · 统计学 2026-04-27 Cheolhei Lee , Xing Wang , Xiaowei Yue , Jianguo Wu

Jets with a large radius $R\gtrsim 1$ and grooming algorithms are widely used to fully capture the decay products of boosted heavy particles at the Large Hadron Collider (LHC). Unlike most discriminating variables used in such studies, the…

高能物理 - 唯象学 · 物理学 2016-09-06 Benjamin Nachman , Pascal Nef , Ariel Schwartzman , Maximilian Swiatlowski , Chaowaroj Wanotayaroj

One- and two-jet inclusive quantities in hadron collisions have already been calculated to next-to-leading order accuracy, using both the subtraction and the cone method. Since the one-loop corrections have recently been obtained for all…

高能物理 - 唯象学 · 物理学 2009-10-28 S. Frixione , Z. Kunszt , A. Signer

Conformal prediction (CP) provides a comprehensive framework to produce statistically rigorous uncertainty sets for black-box machine learning models. To further improve the efficiency of CP, conformal correction is proposed to fine-tune or…

机器学习 · 计算机科学 2025-12-03 Senrong Xu , Tianyu Wang , Zenan Li , Yuan Yao , Taolue Chen , Feng Xu , Xiaoxing Ma

Cross-entropy method model predictive control (CEM--MPC) is a powerful gradient-free technique for nonlinear optimal control, but its performance is often limited by the reliance on random sampling. This conventional approach can lead to…

系统与控制 · 电气工程与系统科学 2026-05-12 Markus Walker , Daniel Frisch , Uwe D. Hanebeck

Automating the design of microstrip antennas has been an active area of research for the past decade. By leveraging machine learning techniques such as Genetic Algorithms (GAs) or, more recently, Deep Neural Networks (DNNs), a number of…

信号处理 · 电气工程与系统科学 2024-10-07 Ali Al-Zawqari , Ali Safa , Gert Vandersteen

Nonlinear contraction theory is a comparatively recent dynamic control system design tool based on an exact differential analysis of convergence, in essence converting a nonlinear stability problem into a linear time-varying stability…

斑图形成与孤子 · 物理学 2007-05-23 Winfried Lohmiller , Jean-Jacques E. Slotine