Results 61 to 70 of about 17,823 (205)

On the Cumulants of the First Passage Time of the Inhomogeneous Geometric Brownian Motion

Mathematics, 2021
We consider the problem of the first passage time T of an inhomogeneous geometric Brownian motion through a constant threshold, for which only limited results are available in the literature.
Elvira Di Nardo, Giuseppe D’Onofrio
doaj   +1 more source

Hybrid Quatsome‐Encapsulated Silver Nanoparticles as Stable Plasmonic Substrates for Surface‐Enhanced Raman Scattering

Journal of Raman Spectroscopy, EarlyView.
In this work, silver nanoparticles encapsulated within quatsome membranes have shown to preserve their plasmonic properties for at least 165 days without aggregation. These hybrid nanostructures enable strong SERS enhancement of pyrene and Prodan by confining the molecules within a few nanometers from the silver surface.
Renato Cezar Peramezza Ribeiro, Caio Hiroaki Miyake, Pedro Henrique Figueiredo Backes Costa, Jhenifer Hallen Braga Mauricio, Ana Luiza Correa Januário, Diogo Soga, Evandro Luiz Duarte, Márcia de Almeida Rizzutto, Rômulo Augusto Ando, Antonio Rodrigues da Cunha, Erix Alexander Milán‐Garcés   +10 more
wiley   +1 more source

Freeze-out Conditions from Lattice QCD

, 2012
We describe a procedure for determination of freeze-out parameters of heavy-ion collisions through direct comparisons between experimentally measured higher order cumulants of charge fluctuations and first principle (lattice) QCD calculations.Comment ...
Mukherjee, Swagato
core   +1 more source

Simulating the year to minute wind spectrum with mesoscale‐coupled large‐eddy simulations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We coupled a large‐eddy simulation (resolution 50 m) to a mesoscale model (resolution 2 km), which takes boundary conditions from the ERA5 reanalysis. When using a large enough mesoscale domain (𝒪(1000 km)), the simulation setup can reproduce the observed temporal wind spectrum reasonably at all scales between one year and one minute. Furthermore, such
Bernard Postema, Chiel C. van Heerwaarden, Bart J.H. van Stratum, Pim van Dorp, Peter Baas, Harm J.J. Jonker   +5 more
wiley   +1 more source

Charge fluctuations in chiral models and the QCD phase transition

, 2011
We consider the Polyakov loop-extended two flavor chiral quark--meson model and discuss critical phenomena related with the spontaneous breaking of the chiral symmetry.
Bengt Friman, Friman B Karsch F Redlich K Skokov V, Frithjof Karsch, Karsch F, Krzysztof Redlich, Stephanov M, Stephanov M A, Vladimir Skokov   +7 more
core   +1 more source

Causal Discovery with Latent Confounders Based on Higher-Order Cumulants

CoRR, 2023
Causal discovery with latent confounders is an important but challenging task in many scientific areas. Despite the success of some overcomplete independent component analysis (OICA) based methods in certain domains, they are computationally expensive and can easily get stuck into local optima.
Ruichu Cai, Zhiyi Huang 0008, Wei Chen 0103, Zhifeng Hao, Kun Zhang 0001   +4 more
openaire   +3 more sources

Thermosensitive Nanostructured Coacervates Developed by Mixing ABA‐ and AB‐Block Copolymers and Their Unique Sustained Release of Nano‐Micelles in a Regulated Manner

Small, EarlyView.
Polyion complex micelles composed of blends of ABA and AB block copolymers can form coacervates with a hexagonally packed cylinder nanostructure after heating. The resulting coacervates can release the micelles under physiological conditions in a zero‐order kinetics, possessing cargo proteins.
Takumi Egashira, Hiroshi Kamizawa, Yujiro Hamada, Wataru Fushimoto, Hiroshi Y. Yoshikawa, Yuji Higaki, Atsushi Takahara, Takeshi Mori, Yoshiki Katayama, Akihiro Kishimura   +9 more
wiley   +1 more source

Specification Tests for Jump‐Diffusion Models Based on the Characteristic Function

International Statistical Review, EarlyView.
Summary Goodness‐of‐fit tests are suggested for several popular jump‐diffusion processes. The suggested test statistics utilise the marginal characteristic function of the model and its L2‐type discrepancy from an empirical counterpart. Model parameters are estimated either by minimising the aforementioned L2‐type discrepancy or by maximum likelihood ...
Gerrit Lodewicus Grobler, Denis Belomestny, Simos George Meintanis, Emanuele Taufer   +3 more
wiley   +1 more source

Renormalization group flows for track function moments

Journal of High Energy Physics, 2022
Track functions describe the collective effect of the fragmentation of quarks and gluons into charged hadrons, making them a key ingredient for jet substructure measurements at hadron colliders, where track-based measurements offer superior angular ...
Max Jaarsma, Yibei Li, Ian Moult, Wouter Waalewijn, Hua Xing Zhu   +4 more
doaj   +1 more source

Exact transmission moments in one-dimensional weak localization and single-parameter scaling

, 2003
We obtain for the first time the expressions for the mean and the variance of the transmission coefficient for an Anderson chain in the weak localization regime, using exact expansions of the complex transmission- and reflection coefficients to fourth ...
Abrahams E, Anderson P W, Barnes C, Bellman R, Cohen A, Datta S, Deych L I, Heinrichs J, Imry Y, Jean Heinrichs, Rammal R, Shapiro B, Thouless D J, Van Kampen N G   +13 more
core   +1 more source