Results 21 to 30 of about 1,793,420 (289)

Q-particles in embedded declaratives, mood, and clausal complementation

open access: yesSemantics and Linguistic Theory, 2022
Q-particles are functional items that are used to form alternative-related constructions. This paper investigates a hitherto understudied use of the Japanese Q-particle ka in which it occurs immediately below the declarative complementizer and imposes constraints on the doxastic state of the attitude holder.
openaire   +2 more sources

Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin [PDF]

open access: yesAtmospheric Chemistry and Physics, 2018
Airborne observations over the Amazon Basin showed high aerosol particle concentrations in the upper troposphere (UT) between 8 and 15 km altitude, with number densities (normalized to standard temperature and pressure) often exceeding those in the ...
M. O. Andreae   +46 more
doaj   +1 more source

q-Differential equations for q-classical polynomials and q-Jacobi-Stirling numbers [PDF]

open access: yes, 2016
We introduce, characterise and provide a combinatorial interpretation for the so-called q-Jacobi–Stirling numbers. This study is motivated by their key role in the (reciprocal) expansion of any power of a second order q-differential operator having the
Zeng, Jiang   +5 more
core   +1 more source

Open string QED meson description of the X17 particle and dark matter

open access: yesJournal of High Energy Physics, 2020
As a quark and an antiquark cannot be isolated, the intrinsic motion of a composite q q ¯ $$ q\overline{q} $$ system in its lowest-energy states lies predominantly in 1+1 dimensions, as in an open string with the quark and the antiquark at its two ends ...
Cheuk-Yin Wong
doaj   +1 more source

Interaction between dielectric particles enhances the Q-factor

open access: yesAdvanced Electromagnetics, 2019
We study behavior of resonant modes with a distance between two identical dielectric cylinders and disks. We reveal two basic scenarios of evolution of resonances with the distance between the cylinders.
E. Bulgakov, K. Pichugin, A. Sadreev
doaj   +1 more source

A two-dimensional Weibel instability simulation using the non-extensive distribution function

open access: yesAIP Advances, 2020
In this paper, the analysis of Weibel instability for electron–positron plasma is carried out by applying the q non-extensive velocity distribution function.
Amin Esmaeili   +3 more
doaj   +1 more source

Flavoured axions in the tail of Bq → μ + μ − and B → γ * form factors

open access: yesJournal of High Energy Physics, 2021
We discuss how LHC di-muon data collected to study B q → μμ can be used to constrain light particles with flavour-violating couplings to b-quarks. Focussing on the case of a flavoured QCD axion, a, we compute the decay rates for B q → μμa and the SM ...
Johannes Albrecht   +3 more
doaj   +1 more source

A machine learning approach to aerosol classification for single-particle mass spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2018
Compositional analysis of atmospheric and laboratory aerosols is often conducted via single-particle mass spectrometry (SPMS), an in situ and real-time analytical technique that produces mass spectra on a single-particle basis.
C. D. Christopoulos   +7 more
doaj   +1 more source

A search for the decays of stopped long-lived particles at s $$ \sqrt{\mathrm{s}} $$ = 13 TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2021
A search for long-lived particles, which have come to rest within the ATLAS detector, is presented. The subsequent decays of these particles can produce high-momentum jets, resulting in large out-of-time energy deposits in the ATLAS calorimeters.
The ATLAS collaboration   +2888 more
doaj   +1 more source

Particle Swarm Optimization Combined with Q-learning of Experience Sharing Strategy [PDF]

open access: yesJisuanji kexue yu tansuo, 2022
Particle swarm optimization (PSO) has shortcomings such as easy to fall into local optimum, insufficient diversity and low precision. Recently, adopting the strategy of combining the reinforcement learning method like Q-learning to improve the PSO ...
LUO Yixuan, LIU Jianhua, HU Renyuan, ZHANG Dongyang, BU Guannan
doaj   +1 more source

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