Results 1 to 10 of about 17,131 (25)

Concurrent Kink and Sausage Waves in A Crescent Shaped Structure Over A Limb Prominence [PDF]

, 2023
A Crescent shaped prominence Structure (CS), over the solar west limb is studied using EIS/HINODE and AIA/SDO. First, the time varying positions of the top and below borders of the CS, along with its central axis are derived. Time evolutions of the Doppler shifts, and Line width of Fe~{\scriptsize \rm XII} 195.119 line are studied over the CS borders ...
arxiv   +1 more source

The studies on $Z \to Υ(1S)+g+g$ at the next-to-leading-order QCD accuracy [PDF]

Eur. Phys. J. C (2020) 80:311, 2020
In this paper, we carry out the next-to-leading-order (NLO) studies on $Z \to \Upsilon(1S)+g+g$ via the color-singlet (CS) $b\bar{b}$ state. We find the newly calculated NLO QCD corrections to this process can significantly influence its leading-order (LO) results, and greatly improve the dependence on the renormalization scale.
arxiv   +1 more source

Sulphur and carbon isotopes towards Galactic centre clouds [PDF]

A&A 642, A222 (2020), 2020
Measuring isotopic ratios is a sensitive technique used to obtain information on stellar nucleosynthesis and chemical evolution. We present measurements of the carbon and sulphur abundances in the interstellar medium of the central region of our Galaxy. The selected targets are the +50km/s Cloud and several l.o.s. clouds towards Sgr B2(N). Towards the +
arxiv   +1 more source

Graph Partitions Under Average Degree Constraint [PDF]

arXiv, 2022
In this paper, we prove that every graph with average degree at least $s+t+2$ has a vertex partition into two parts, such that one part has average degree at least $s$, and the other part has average degree at least $t$. This solves a conjecture of Cs\'{o}ka, Lo, Norin, Wu and Yepremyan.
arxiv  

QCD leading order study of the $J/ψ$ leptoproduction at HERA within the nonrelativistic QCD framework [PDF]

, 2017
As indicated in our previous paper (Phys.Rev.D96.034002), the existing literatures studying the $J/\psi$ production in deeply inelastic scattering (DIS) in collinear factorization are on the basis of a formalism that will lead to wrong results when the ranges of the transverse momentum or the rapidity of the $J/\psi$ in the laboratory frame do not ...
arxiv   +1 more source

Sequence Types and Infinitary Semantics [PDF]

arXiv, 2021
We introduce a new representation of non-idempotent intersection types, using \textbf{sequences} (families indexed with natural numbers) instead of lists or multisets. This allows scaling up \textbf{intersection type} theory to the infinitary $\lambda$-calculus.
arxiv  

A note on the asymptotic normality of sums of extreme values [PDF]

Journal of Statistical Planning and Inference, 22, 1989, pp. 127-136, 2016
Let $X_1$, $X_2$,... be a sequence of independent random variables with common distribution function $F$ in the domain of attraction of a Gumbel extreme value distribution and for each integer $n\geq 1$, let $X_{1,n} \leq ... X_{n,n}$ denote the order statistics based on the first $n$ of these random variables.
arxiv   +1 more source

Channel Estimation for IRS-Assisted Millimeter-Wave MIMO Systems: Sparsity-Inspired Approaches [PDF]

arXiv, 2021
Due to their ability to create favorable line-of-sight (LoS) propagation environments, intelligent reflecting surfaces (IRSs) are regarded as promising enablers for future millimeter-wave (mm-wave) wireless communication. In this paper, we investigate channel estimation for IRS-assisted mm-wave multiple-input multiple-output (MIMO) {\color{black ...
arxiv  

All Data Inclusive, Deep Learning Models to Predict Critical Events in the Medical Information Mart for Intensive Care III Database (MIMIC III) [PDF]

arXiv, 2020
Intensive care clinicians need reliable clinical practice tools to preempt unexpected critical events that might harm their patients in intensive care units (ICU), to pre-plan timely interventions, and to keep the patient's family well informed. The conventional statistical models are built by curating only a limited number of key variables, which ...
arxiv  

Real next-to-next-to-leading-order QCD corrections to J/psi and Upsilon hadroproduction in association with a photon [PDF]

Phys.Lett.B679:340-346,2009, 2009
We update the study of the QCD corrections to direct J/psi and Upsilon hadroproduction in association with a photon in the QCD-based approach of the Colour-Singlet (CS) Model. After comparison with the recent full next-to-leading-order (NLO) computation for this process, we provide an independent confirmation to the inclusive case that NLO QCD ...
arxiv   +1 more source