cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Controlling $ρ$ width effects for a precise value of $α$ in $B \to ρρ$
Creators: name: Gronau, Michael
name: Rosner, Jonathan L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: It has been pointed out that the currently most precise determination of the weak phase $ϕ_2 = α$ of the Cabibbo-Kobayashi-Maskawa (CKM) matrix achieved in $B \to ρρ$ decays is susceptible to a small correction at a level of $(Γ_ρ/m_ρ)^2$ due to an $I=1$ amplitude caused by the $ρ$ width. Using Breit-Wigner distributions for the two pairs of pions forming $ρ$ mesons, we study the $I=1$ contribution to $B\to ρρ$ decay rates as function of the width and location of the $ρ$ band. We find that in the absence of a particular enhancement of the $I=1$ amplitude reducing a single band to a width $Γ_ρ$ at SuperKEKB leads to results which are completely insensitive to the $ρ$ width. If the $I=1$ amplitude is dynamically enhanced relative to the $I=0,2$ amplitude one could subject its contribution to a "magnifying glass" measurement using two separated $ρ$ bands of width $Γ_ρ$. Subtraction of the $I=1$ contribution from the measured decay rate would lead to a very precise determination of the $I=0,2$ amplitude needed for performing the isospin analysis.
description: to be published in Physics Letters B
Exact collisional moments for plasma fluid theories
Creators: name: Pfefferlé, David
name: Hirvijoki, Eero
name: Lingam, Manasvi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The velocity-space moments of the often troublesome nonlinear Landau collision operator are expressed exactly in terms of multi-index Hermite-polynomial moments of the distribution functions. The collisional moments are shown to be generated by derivatives of two well-known functions, namely the Rosenbluth-MacDonald-Judd-Trubnikov potentials for a Gaussian distribution. The resulting formula has a nonlinear dependency on the relative mean flow of the colliding species normalised to the root-mean-square of the corresponding thermal velocities, and a bilinear dependency on densities and higher-order velocity moments of the distribution functions, with no restriction on temperature, flow or mass ratio of the species. The result can be applied to both the classic transport theory of plasmas, that relies on the Chapman-Enskog method, as well as to deriving collisional fluid equations that follow Grad's moment approach. As an illustrative example, we provide the collisional ten-moment equations with exact conservation laws for momentum- and energy-transfer rate.
Multi-kink collisions in the $ϕ^6$ model
Creators: name: Marjaneh, Aliakbar Moradi
name: Gani, Vakhid A.
name: Saadatmand, Danial
name: Dmitriev, Sergey V.
name: Javidan, Kurosh
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study simultaneous collisions of two, three, and four kinks and antikinks of the $ϕ^6$ model at the same spatial point. Unlike the $ϕ^4$ kinks, the $ϕ^6$ kinks are asymmetric and this enriches the variety of the collision scenarios. In our numerical simulations we observe both reflection and bound state formation depending on the number of kinks and on their spatial ordering in the initial configuration. We also analyze the extreme values of the energy densities and the field gradient observed during the collisions. Our results suggest that very high energy densities can be produced in multi-kink collisions in a controllable manner. Appearance of high energy density spots in multi-kink collisions can be important in various physical applications of the Klein-Gordon model.
description: 21 pages, 8 figures; v2: minor changes to match version published in JHEP
Parallaxes and Infrared Photometry of three Y0 dwarfs
Creators: name: Smart, R. L.
name: Apai, Dániel
name: Kirkpatrick, J. Davy
name: Leggett, S. K.
name: Marocco, F.
name: Morrison, Jane E.
name: Jones, H. R. A.
name: Pinfield, D.
name: Tremblin, P.
name: Amundsen, D. S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have followed up the three Y0 dwarfs WISEPA J041022.71+150248.5, WISEPA J173835.53+273258.9 and WISEPC J205628.90+145953.3 using the UKIRT/WFCAM telescope/instruments. We find parallaxes that are more consistent and accurate than previously published values. We estimate absolute magnitudes in photometric pass-bands from $Y$ to $W3$ and find them to be consistent between the three Y0 dwarfs indicating the inherent cosmic absolute magnitude spread of these objects is small. We examine the MKO $J$ magnitudes over the four year time line and find small but significant monotonic variations. Finally we estimate physical parameters from a comparison of spectra and parallax to equilibrium and non-equilibrium models finding values consistent with solar metallicity, an effective temperature of 450-475\,K and log~g of 4.0-4.5.
description: 12 Pages, 10 figures, Accepted by MNRAS
title: Effect of cooling rate on the crystallization of aluminum alloys under pressure
Creators: name: Denisov, Maksim S.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2019
Subjects: aluminum alloy
cooling
crystallization
microstructure
pressure

description: The influence of pressure on the compressibility of liquid metal and the release of latent crystallization heat is studied. It is found that the pressure application combined with the cooling rate creates metastable structures. It can be used for improvement the properties of metals and alloys. doi: 10.18720/MPM.4112019_14
Stress-strain state of a steel-reinforced concrete slab under long-term
Creators: name: Zamaliev, Farit
name: Zakirov, Marat
Publisher: name: Санкт-Петербургский политехнический университет Петра Великого
Year: 2018
Subjects: subject: steel reinforced concreteslab
subject: numerical experiments
subject: full-scale tests
subject: stresses
subject: deflections
subject: comparisons
subject: сталежелезобетонная плита
subject: численные эксперименты
subject: натурные испытания
subject: напряжения
subject: прогибы
subject: сравнения

description: This article explores the evaluation of the stress-strain state of steel reinforced concrete slabs under the action of long-term loads. The technique of computer simulation for the performance evaluation of steel reinforced concrete slabs under short-term and long-term loads and the results of numerical studies are shown. A unit for long-term tests has been prepared based upon the numerical studies. The mounting locations of instruments for measuring vertical displacements, the label diagram of sensors of strains in steel reinforced concrete test structures are given. The measurement results are summarized in tables and graphs. The analysis of the results of full-scale tests is given as are comparisons with numerical experiments’ data. Analytical expressions for the calculation of steel reinforced concrete slabs for long-term loads taking into account the creep of concrete are given.
SICRET: Supernova Ia Cosmology with truncated marginal neural Ratio EsTimation
Creators: name: Karchev, Konstantin
name: Trotta, Roberto
name: Weniger, Christoph
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Type Ia supernovae (SNae Ia), standardisable candles that allow tracing the expansion history of the Universe, are instrumental in constraining cosmological parameters, particularly dark energy. State-of-the-art likelihood-based analyses scale poorly to future large datasets, are limited to simplified probabilistic descriptions, and must explicitly sample a high-dimensional latent posterior to infer the few parameters of interest, which makes them inefficient. Marginal likelihood-free inference, on the other hand, is based on forward simulations of data, and thus can fully account for complicated redshift uncertainties, contamination from non-SN Ia sources, selection effects, and a realistic instrumental model. All latent parameters, including instrumental and survey-related ones, per-object and population-level properties, are implicitly marginalised, while the cosmological parameters of interest are inferred directly. As a proof of concept, we apply truncated marginal neural ratio estimation (TMNRE), a form of marginal likelihood-free inference, to BAHAMAS, a Bayesian hierarchical model for SALT parameters. We verify that TMNRE produces unbiased and precise posteriors for cosmological parameters from up to 100 000 SNae Ia. With minimal additional effort, we train a network to infer simultaneously the O(100 000) latent parameters of the supernovae (e.g. absolute brightnesses). In addition, we describe and apply a procedure that utilises local amortisation of the inference to convert the approximate Bayesian posteriors into frequentist confidence regions with exact coverage. Finally, we discuss the planned improvements to the model that are enabled by using a likelihood-free inference framework, like selection effects and non-Ia contamination.
description: 17 pages, 12 figures; This article has been accepted for publication in MNRAS. (c): 2022 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved
D4.2 Engagement Strategy and Activities Reported
Creators: name: Emerging Communities Africa - ECA
Publisher: name: AfriConEU
Year: 2022
Subjects: Africa
Europe
Transcontinentalpartnership
AfriConEU
DIH

description: The main goal of AfriConEU is to develop, test, and validate the “AfriConEU Networking Academy”, an innovative mechanism for connecting and sharing best practices, experiences,and resources between DIHs in Africa and between DIHs in Africa and the EU, in acomprehensive, replicable, and self-sustaining way.

To motivate the involvement of stakeholders in the AfriConEU Networking Academy and cultivate a collaborative attitude between them, an engagement strategy was designed. This deliverable presents the strategy designed by the project partners, reporting the activities delivered and describing the actions to be implemented during the next months.Coordinated by Emerging Communities Africa (ECA), the AfriConEU Stakeholders Engagement Strategy has been categorized in four (4) phases:

1. Pre-engagement phase2. Engagement phase3. Follow-up engagement phase4. Continuous Engagement and Follow-up

A total of three (3) sessions and a pool on Twitter were held as part of the pre-engagement strategy with the aim of gaining perspective from key players in the ecosystem with focus on plights and resource sharing to augment their positions in the digital innovation ecosystem whilst leveraging access into their network. The other phases are fully explored later in this document.The document also provides an analysis of the main barriers and enablers to engagement, as well as a detailed mapping of the stakeholders and the intended plan for engaging them during the period of peak activities with utmost efficiency. The intent of this document is to provide an overall context and description of the activities conducted culminating in the design of strategies from feedback during engagements for the use of the AfriConEU Networking Academy.The key expected impacts of the strategy are as follows:

• Increased participation in pre and post-event activities• Sustained curiosity and interest in Academy activities• High Turnout at all AfriConEU planned activities• Increased membership in the AfriConEU Community.

This document enumerates how the engagement strategy aims to engage DIHs and digitalecosystem stakeholders in the project activities both from Africa and Europe as well as to present the engagement activities that will help to fulfil the KPI targets.
Supplementary_Methods_Blastn(supp.3).docx
Creators: name: Hoon, Ludwig
Publisher: name: figshare
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified

description: Supplementary information for "Derivation of SNP sets from a Staphylococcus aureus orthologous SNP matrix."
 This supplementary contains the methods used to query BLASTn database to demonstrate the SNPs selected by minSNPs have the ability to discriminate against ST762 and CC1.
 The BLASTn query strings were generated with Mu50 reference genome and SNPs previously identified with minSNPs.
Межэтнические браки в контексте современного российского национального сценария
Creators: name: Лурье, С. В.
Publisher: name: Реноме
Year: 2018

description: Статья посвящена рассмотрению межэтнической брачности в современной России как социокультурного явления. Изучаются и истолковываются его динамика и особенности как сближающие, так и противопоставляющие его феномену широко распространенных межнациональных браков в СССР. Задачей статьи было определить, каким образом национально-смешанные браки соотносятся с национальным сценарием современной России, вписываются ли в него, являются ли ценностно одобряемым и культурно обусловленным явлением. С этой целью анализируется статистика межэтнических браков по России и ее регионам, данные опросов общественного мнения и существующая вокруг феномена современной межэтнической брачности мифология, выраженная как в СМИ, так и наглядно проявляющаяся во многих научных исследованиях, провоцируя искажение фактов. На этой базе в статье представлена социокультурологическая трактовка изучаемого явления.
Ключевые слова: межэтнические браки, межэтнические отношения, социокультурный сценарий.
Diamagnetic response and phase stiffness for interacting isolated narrow bands
Creators: name: Mao, Dan
name: Chowdhury, Debanjan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A platform that serves as an ideal playground for realizing ``high'' temperature superconductors are materials where the electrons' kinetic energy is completely quenched, and interactions provide the only energy scale in the problem for $T_c$. However, when the non-interacting bandwidth for a set of isolated bands is small compared to the scale of the interactions, the problem is inherently non-perturbative and requires going beyond the traditional mean-field theory of superconductivity. In two spatial dimensions, $T_c$ is controlled by the superconducting phase stiffness. Here we present a general theoretical framework for computing the electromagnetic response for generic model Hamiltonians, which controls the maximum possible superconducting phase stiffness and thereby $T_c$, without resorting to any mean-field approximation. Importantly, our explicit computations demonstrate that the contribution to the phase stiffness arises from (i) ``integrating out'' the remote bands that couple to the microscopic current operator, and (ii) the density-density interactions projected onto the isolated narrow bands. Our framework can be used to obtain an upper bound on the phase stiffness, and relatedly the superconducting transition temperature, for a range of physically inspired models involving both topological and non-topological narrow bands with arbitrary density-density interactions. We discuss a number of salient aspects of this formalism by applying it to a specific model of interacting flat bands and compare it against the known $T_c$ from independent numerically exact computations.
description: 7 + 4 pages, 3 figures, new results added
Reconstructing the galaxy density field with photometric redshifts: II. Environment-dependent galaxy evolution since $z \simeq 3$
Creators: name: Malavasi, Nicola
name: Pozzetti, Lucia
name: Cucciati, Olga
name: Bardelli, Sandro
name: Ilbert, Olivier
name: Cimatti, Andrea
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Although extensively investigated, the role of the environment in galaxy formation is still not well understood. In this context, the Galaxy Stellar Mass Function (GSMF) is a powerful tool to understand how environment relates to galaxy mass assembly and the quenching of star-formation. In this work, we make use of the high-precision photometric redshifts of the UltraVISTA Survey to study the GSMF in different environments up to $z \sim 3$, on physical scales from 0.3 to 2 Mpc, down to masses of $M \sim 10^{10} M_{\odot}$. We witness the appearance of environmental signatures for both quiescent and star-forming galaxies. We find that the shape of the GSMF of quiescent galaxies is different in high- and low-density environments up to $z \sim 2$ with the high-mass end ($M \gtrsim 10^{11} M_{\odot}$) being enhanced in high-density environments. On the contrary, for star-forming galaxies a difference between the GSMF in high- and low density environments is present for masses $M \lesssim 10^{11} M_{\odot}$. Star-forming galaxies in this mass range appear to be more frequent in low-density environments up to $z < 1.5$. Differences in the shape of the GSMF are not visible anymore at $z > 2$. Our results, in terms of general trends in the shape of the GSMF, are in agreement with a scenario in which galaxies are quenched when they enter hot gas-dominated massive haloes which are preferentially in high-density environments.
description: 18 pages, 10 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society
Machine learning based modeling of disordered elemental semiconductors: understanding the atomic structure of a-Si and a-C
Creators: name: Caro, Miguel A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Disordered elemental semiconductors, most notably a-C and a-Si, are ubiquitous in a myriad of different applications. These exploit their unique mechanical and electronic properties. In the past couple of decades, density functional theory (DFT) and other quantum mechanics-based computational simulation techniques have been successful at delivering a detailed understanding of the atomic and electronic structure of crystalline semiconductors. Unfortunately, the complex structure of disordered semiconductors sets the time and length scales required for DFT simulation of these materials out of reach. In recent years, machine learning (ML) approaches to atomistic modeling have been developed that provide an accurate approximation of the DFT potential energy surface for a small fraction of the computational time. These ML approaches have now reached maturity and are starting to deliver the first conclusive insights into some of the missing details surrounding the intricate atomic structure of disordered semiconductors. In this Topical Review we give a brief introduction to ML atomistic modeling and its application to amorphous semiconductors. We then take a look at how ML simulations have been used to improve our current understanding of the atomic structure of a-C and a-Si.
title: On the running maximum of brownian motion and associated lookback options.
Creators: name: Ho, Tak Yui
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2018
Subjects: subject: HA Statistics

description: The running maximum of Brownian motion appears often in mathematical finance. In derivatives pricing, it is used in modelling derivatives with lookback or barrier hitting features. For path dependent derivatives, valuation and risk management rely on Monte Carlo simulation. However, discretization schemes are often biased in estimating the running maximum and barrier hitting time. For example, it is hard to know if the underlying asset has crossed the barrier between two discrete time points when the simulated asset prices are on one side of the barrier but very close.
 We apply several martingale methods, such as optional stopping and change of measure, also known as importance sampling including exponential tilting, on simulating the stopping times, and positions in some case, of the running maximum of Brownian motion. This results in more accurate and computationally cheap Monte Carlo simulations. In the linear deterministic barrier case, close-form distribution functions are obtained from integral transforms. The stopping time and position can hence be simulated exactly and efficiently by acceptancerejection method. Examples in derivative pricing are constructed by using the stopping time as a trigger event. A differential equation method is developed in parallel to solve for the Laplace transform and has the potential to be extended to other barriers.
 In the compound Poisson barrier case, we can reduce the variance and bias of the crossing probabilities simulated by different importance sampling methods. We have also addressed the problem of heavy skewness when applying importance sampling.
Enquête sur les trajectoires des musiciens intervenants en France – Synthèse #1 : trajectoires géographiques, sociales et partenariales
Creators: name: Raphael, ROTH
Publisher: name: Zenodo
Year: 2022
Subjects: dumi
éducation artistique et culturelle
éducation musicale
musicien intervenant

description: De tous les champs appréhendés par l’éducation artistique et culturelle (EAC), la musique est, en France, celui dans lequel la formation des artistes à l’intervention en classe ou dans divers contextes de médiation est, historiquement et professionnellement, la plus organisée et structurée. La visée du Diplôme Universitaire de Musicien Intervenant (DUMI), délivré par les neuf Centres de formation des Musiciens Intervenants (CFMI), est de former des musiciens à la médiation de la musique dans des environnements variés (écoles, conservatoires, structures culturelles et artistiques, structures spécialisées, etc.). Artiste et pédagogue, le musicien intervenant évolue dans un contexte partenarial fort (partenariat éducation nationale / culture, partenariats classes / collectivités, …). Cette particularité du champ musical, par l’existence du statut et du métier de musicien intervenant, est l’objet d’une attention de la part des mondes de l’art (Becker, 2010) et des sphères artistiques pour lesquels la formation des artistes intervenants est moins organisée : arts dramatiques, danse, arts visuels, arts plastiques, etc. Cette première synthèse présente les résultats d’une enquête qualitative et quantitative réalisée en 2022 sur les trajectoires géographiques, sociales et les réseaux de partenariat des musiciens intervenants en France. Adossée à la dynamique de recherche et d’évaluation des dispositifs en éducation artistique et culturelle de l’Institut national supérieur de l’éducation artistique et culturelle (Inseac), et en partenariat avec le Conseil National des CFMI, l’enquête a pour objectif d’instruire une connaissance des musiciens intervenants sous l’angle de leurs trajectoires (Passeron, 1990) géographiques, sociales, culturelles et de ce que nous appelons ici trajectoires de transmission (Malinas, 2008).
Evolving waves and turbulence in the outer corona and inner heliosphere: the accelerating expanding box
Creators: name: Tenerani, Anna
name: Velli, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Alfvénic fluctuations in the solar wind display many properties reflecting an ongoing nonlinear cascade, e.g. a well-defined spectrum in frequency, together with some characteristics more commonly associated with the linear propagation of waves from the Sun, such as the variation of fluctuation amplitude with distance, dominated by solar wind expansion effects. Therefore both nonlinearities and expansion must be included simultaneously in any successful model of solar wind turbulence evolution. Because of the disparate spatial scales involved, direct numerical simulations of turbulence in the solar wind represent an arduous task, especially if one wants to go beyond the incompressible approximation. Indeed, most simulations neglect solar wind expansion effects entirely. Here we develop a numerical model to simulate turbulent fluctuations from the outer corona to 1 AU and beyond, including the sub-Alfvénic corona. The accelerating expanding box (AEB) extends the validity of previous expanding box models by taking into account both the acceleration of the solar wind and the inhomogeneity of background density and magnetic field. Our method incorporates a background accelerating wind within a magnetic field that naturally follows the Parker spiral evolution using a two-scale analysis in which the macroscopic spatial effect coupling fluctuations with background gradients becomes a time-dependent coupling term in a homogeneous box. In this paper we describe the AEB model in detail and discuss its main properties, illustrating its validity by studying Alfvén wave propagation across the Alfvén critical point.
description: 19 pages, 6 Figures. In press in the ApJ
Heljo Heinsalu välipäevik nr 5
Creators: name: Heinsalu, Heljo
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1973
Subjects: Early Ordovician
Tremadoc
Estonia
drill cores
geological descriptions

description: Field notebook with descriptions of Tremadoc drill cores in Estonia (descriptions 1973-74, 1976-77, 1980)
Extracting energy via magnetic reconnection from Kerr-de Sitter black holes
Creators: name: Wang, Chao-Hui
name: Pang, Cheng-Qun
name: Wei, Shao-Wen
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been recently shown that magnetic reconnection can provide us a novel mechanism to extract black hole rotational energy from a Kerr black holes. In this paper, we study the energy extraction from the Kerr-de Sitter black hole via this magnetic reconnection process. The result shows that, with the increase of the cosmological constant, a slowly spinning Kerr-de Sitter black hole can implement the energy extraction better than its Kerr counterpart. Interestingly, although the numerical results show that the maximum values of the power and efficiency slightly decrease with the cosmological constant, Kerr-de Sitter black hole still has significant advantages when the black hole spin is larger than 1 and the dominant reconnection $X$-point is far away from the event horizon. This is mainly attributed to the higher upper spin bound and wider ergosphere in the presence of the cosmological constant. These results uncover the significant effects of the cosmological constant on the energy extraction via the magnetic reconnection process.
description: 17 pages, 12 figures. Revised version
Modelling compensated antiferromagnetic interfaces with MuMax3
Creators: name: De Clercq, Jonas
name: Leliaert, Jonathan
name: Van Waeyenberge, Bartel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We show how compensated antiferromagnetic spins can be implemented in the micromagnetic simulation program MuMax3. We demonstrate that we can model spin flop coupling as a uniaxial anisotropy for small canting angles and how we can take into account the exact energy terms for strong coupling between a ferromagnet and compensated antiferromagnet. We also investigate the training effect in biaxial antiferromagnets and reproduce the training effect in a polycrystalline IrMn/CoFe bilayer.
description: 11 pages + Supplementary Material (10 pages)
DEVELOPING SCHEDULER TEST CASES TO VERIFY SCHEDULER IMPLEMENTATIONS IN TIMETRIGGERED EMBEDDED SYSTEMS
Creators: name: Nahas, Mouaaz
Publisher: name: Zenodo
Year: 2016

description: Despite that there is a “one-to-many” mapping between scheduling algorithms and schedulerimplementations, only a few studies have discussed the challenges and consequences of translating betweenthese two system models. There has been an argument that a wide gap exists between scheduling theory andscheduling implementation in practical systems, where such a gap must be bridged to obtain an effectivevalidation of embedded systems. In this paper, we introduce a technique called “Scheduler Test Case”(STC) aimed at bridging the gap between scheduling algorithms and scheduler implementations in singleprocessor embedded systems implemented using Time-Triggered Co-operative (TTC) architectures. We willdemonstrate how the STC technique can provide a simple and systematic way for documenting, verifying(testing) and comparing various TTC scheduler implementations on particular hardware. However, STC isa generic technique that provides a black-box tool for assessing and predicting the behaviour ofrepresentative implementation sets of any real-time scheduling algorithm.
On the Last New Vertex Visited by a Random Walk in a Directed Graph
Creators: name: Buchanan, Calum
name: Horn, Paul
name: Rombach, Puck
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C81, 05C20

description: Consider a simple graph in which a random walk begins at a given vertex. It moves at each step with equal probability to any neighbor of its current vertex, and ends when it has visited every vertex. We call such a random walk a random cover tour. It is well known that cycles and complete graphs have the property that a random cover tour starting at any vertex is equally likely to end at any other vertex. Ronald Graham asked whether there are any other graphs with this property. In 1993, Lászlo Lovász and Peter Winkler showed that cycles and complete graphs are the only undirected graphs with this property. We strengthen this result by showing that cycles and complete graphs (with all edges considered bidirected) are the only directed graphs with this property.
A radio-to-mm census of star-forming galaxies in protocluster 4C23.56 at z=2.5 : Gas mass and its fraction revealed with ALMA
Creators: name: Lee, Minju M.
name: Tanaka, Ichi
name: Kawabe, Ryohei
name: Kohno, Kotaro
name: Kodama, Tadayuki
name: Kajisawa, Masaru
name: Yun, Min S.
name: Nakanishi, Kouichiro
name: Iono, Daisuke
name: Tamura, Yoichi
name: Hatsukade, Bunyo
name: Umehata, Hideki
name: Saito, Toshiki
name: Izumi, Takuma
name: Aretxaga, Itziar
name: Tadaki, Ken-ichi
name: Zeballos, Milagros
name: Ikarashi, Soh
name: Wilson, Grant W.
name: Hughes, David H.
name: Ivison, R. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate gas contents of star-forming galaxies associated with protocluster 4C23.56 at z = 2.49 by using the redshifted CO(3-2) and 1.1 mm dust continuum with the Atacama Large Millimeter/submillimeter Array. The observations unveil seven CO detections out of 22 targeted H$α$ emitters (HAEs) and four out of 19 in 1.1 mm dust continuum. They have high stellar mass ($M_{\star}>4\times 10^{10}$ $M_{\odot}$) and exhibit a specific star-formation rate typical of main-sequence star forming galaxies at $z\sim2.5$. Different gas mass estimators from CO(3-2) and 1.1 mm yield consistent values for simultaneous detections. The gas mass ($M_{\rm gas}$) and gas fraction ($f_{\rm gas}$) are comparable to those of field galaxies, with $M_{\rm gas}=[0.3, 1.8]\times10^{11} \times (α_{\rm CO}/(4.36\times A(Z)$)) M$_{\odot}$, where $α_{\rm CO}$ is the CO-to-H$_2$ conversion factor and $A(Z)$ the additional correction factor for the metallicity dependence of $α_{\rm CO}$, and $\langle f_{\rm gas}\rangle = 0.53 \pm 0.07$ from CO(3-2). Our measurements place a constraint on the cosmic gas density of high-$z$ protoclusters, indicating the protocluster is characterized by a gas density higher than that of the general fields by an order of magnitude. We found $ρ(H_2)\sim 5 \times 10^9 \,M_{\odot}\,{\rm Mpc^{-3}}$ with the CO(3-2) detections. The five ALMA CO detections occur in the region of highest galaxy surface density, where the density positively correlates with global star-forming efficiency (SFE) and stellar mass. Such correlations imply a potentially critical role of environment on early galaxy evolution at high-z protoclusters, although future observations are necessary for confirmation.
description: 33 pages, 16 figures, 2 tables ; Accepted for publication in The Astrophysical Journal
Riparian erosion morphology, processes and causes along the Victoria River, Northern Territory, Australia
Creators: name: Mccloskey, Gillian Louise
Publisher: name: Charles Darwin University
Year: 2010

description: This research aims to develop an understanding of riparian erosion process, form and cause along the Victoria River, Northern Territory. The Victoria River District (VRD) is located in the semi-arid tropics of Australia, where cattle grazing is the primary land use. The Victoria River riparian zone is intersected by erosion features. The heavily stocked mid-catchment is particularly degraded and suffering severe erosion. The process, form distribution and cause of riparian erosion in the VRD are explored via the study of the environmental setting and land use history. The geomorphological and hydroclimatological setting are the major factors contributing to both the natural and enhanced erosion process. Three forms of riparian erosion are recognized throughout the catchment: sheet, gully, and gully complex. Gully complexes are described in detail and involve several erosional processes. The naturally occurring flood drainage channels (FDCs) co-evolved during floodplain development, while runoff processes are active in the outer feature which is characterized by a well defined scarp and active badlands. Analyses of air photos show that FDC features along the study reach always develop into gully complex features. Some gully complexes were found to have retreated headward up to 50m in the past 60 years. Gully complexes that did not exhibit headward retreat were found to contain badlands that increased in depth, and the depth of the scarp also increased. The settlement of the VRD, and introduction of cattle to the region c.120 years ago, has allowed for the expansion of naturally occurring FDCs, into gully complexes. High intensity rainfall events, flooding and susceptible soils make much of the VRD vulnerable to naturally high erosion rates; the removal of vegetation by cattle has initiated additional erosion processes. The results indicate that FDCs existed prior to European settlement, however badlands have formed at the heads of FDCs after the introduction of cattle. FDC development was determined to be an inherent feature of the VRD landscape. Badlands have developed as a result of the introduction of cattle to the region.
title: The Functions of Kamba Verbal Extensions
Creators: name: Anschutz, Arlea
Publisher: name: Department of Linguistics, University of Colorado Boulder
Year: 1993
Subjects: Linguistics
Kamba language
Bantu languages
grammar

description: This paper examines four verbal extensions found in Kamba and other Bantu languages, noting the ways in which each extension affects both the number and type of arguments allowed by the verb and the meaning of the entire clause. It criticizes the descriptions of the functions of verbal extensions offered by Guthrie (1962) for Bantu and by Whiteley & Muli (1962) for Kamba, and offers a new description with the premise that the functions of verbal extensions in Kamba can not be accurately described without reference to the semantic roles of the arguments of the verb. It discusses problems with traditional terminology used with verbal extensions and suggests alternative labels.
Light $Z'$ Signatures at the LHC
Creators: name: Hiçyılmaz, Yaşar
name: Khalil, Shaaban
name: Moretti, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we discuss a distinctive $pp\to {\rm Higgs}\to Z'Z'\to 4l$ ($l=e,μ$) signal at the Large Hadron Collider (LHC), where the `Higgs' label refers to the SM-like Higgs state discovered in 2012 or a lighter one in the framework of a theoretical model embedding a spontaneously broken $U(1)'$ symmetry in addition to the Standard Model (SM) gauge group. The additional $U(1)'$ symmetry generates a very light $Z'$ state, with both vector and axial (non-universal) couplings to fermions, which are able to explain the so-called Atomki anomaly, compliant with current measurements of the Anomalous Magnetic Moments (AMMs) of electron and muon as well as beam dump experiments. We show that the cross section for this process should be sufficiently large to afford one with significant sensitivity during Run 3 of the LHC.
D5.1 The AfriConEU Community Report (Interim)
Creators: name: INOVA+
Publisher: name: AfriConEU
Year: 2022
Subjects: Africa
Europe
DIH
AfriConEU
Transcontinentalpartnership

description: The AfriConEU community interim report intends to (1) document all the activities that were carried out so far to encourage AfriConEU community members' engagement, (2) present the respective results achieved in terms of interaction and value created and (3) provide an overview on the Talent Matchmaking activities and outcomes.

This deliverable will be structured as follows: first, the AfriConEU Community of Practice and its goals will be presented as well as the strategies that the consortium adopted to build and grow the community. Then, the Key Performance Indicators (KPIs) of the AfriConEU Community and their evolution during the first year of the project activity will be presented. This is possible through the use of a control internal tool named AfriConEU Monitoring File that was created to keep track of the main value indicators of the community. Finally, a closing section with some next steps and strategies foreseen to uptake the community and walk towards the ambitious KPIs will be presented.

Moreover, this report will be revised by M35, where a final version will provide updated information on the activities carried out to engage members and present the final results achieved in terms of interaction and value created.
A review of recycled use of post consumer waste paper in construction
Creators: name: Okeyinka Oriyomi, M.
name: Oloke David, A.
name: Khatib, J.
Publisher: name: Academic Journal of Civil Engineering
Year: 2015

description: The productive use of waste materials represents a means of reducing some of the problems associated with solid waste management. The process minimizes the use of natural resources and in some cases results in the production of environmental friendly products. Ever since the invention of paper, it has formed an important part of human daily activities. With uses in many applications due to its versatile properties. The need to recycle it is thus paramount upon the fact that, the more it is being utilized for several applications, the more the amount of waste paper generate. However, the major percentage of these finds their way to the municipal solid waste stream. This review identifies and discusses some recent research that investigates the potential uses of post-consumer waste paper in several, civil engineering construction materials and then proffers a proposed direction for future work. Several research gaps were identified. These includes: the need to establish a standard mix proportion of papercrete for different application, high moisture absorption of building materials made from waste paper, addressing the contradiction between the hygroscopic properties of paper fibre and cement hydration moisture requirement. In the light of these, an investigation to develop an environmentally friendly, nonload bearing, lightweight building block from waste paper, without the use of cement and with properties suitable for use as walling unit has thus been proposed.
description: Academic Journal of Civil Engineering, Vol 33 No 2 (2015): Special Issue - ICBBM 2015
Mesoscopic transport in electrostatically-defined spin-full channels in quantum Hall ferromagnets
Creators: name: Kazakov, Aleksandr
name: Simion, George
name: Lyanda-Geller, Yuli
name: Kolkovsky, Valery
name: Adamus, Zbigniew
name: Karczewski, Grzegorz
name: Wojtowicz, Tomasz
name: Rokhinson, Leonid P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we use electrostatic control of quantum Hall ferromagnetic transitions in CdMnTe quantum wells to study electron transport through individual domain walls (DWs) induced at a specific location. These DWs are formed due to hybridization of two counter-propagating edge states with opposite spin polarization. Conduction through DWs is found to be symmetric under magnetic field direction reversal, consistent with the helical nature of these DWs. We observe that long domain walls are in the insulating regime with localization length 4 - 6~$μ$m. In shorter DWs the resistance saturates to a non-zero value at low temperatures. Mesoscopic resistance fluctuations in a magnetic field are investigated. The theoretical model of transport through impurity states within the gap induced by spin-orbit interactions agrees well with the experimental data. Helical DWs have required symmetry for the formation of synthetic p-wave superconductors. Achieved electrostatic control of a single helical domain wall is a milestone on the path to their reconfigurable network and ultimately to a demonstration of braiding of non-Abelian excitations.
description: 5 pages and 5 figures in the main text + 5 pages and 9 figures in supplementary materials. New version is revised manuscript according to referees comments. New version doesn't contain any new data
Liquid-gas transition and coexistence in ground-state bosons with spin twist
Creators: name: Gu, Qi
name: Cui, Xiaoling
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the thermodynamic liquid-gas transition and coexistence (LGTC) for ground-state bosons under contact interactions. We find that the LGTC can be facilitated by the mismatch of spin polarization, dubbed "spin twist," between single-particle and interaction channels of bosons with spin degrees of freedom. Such a spin twist uniquely stabilizes the gas phase by creating an effective repulsion for low-density bosons, thereby enabling LGTC in the presence of a quantum droplet at a much larger density. We have demonstrated the scheme for binary bosons subject to Rabi coupling and magnetic detuning, where the liquid-gas transition can be conveniently tuned and their coexistence can be characterized by a discontinuous density profile in a harmonic trap. The spin twist scheme for LGTC can be generalized to a wide class of quantum systems with competing single-particle and interaction orders.
description: 6+5 pages, 4+3 figures
Quantum-Classical Correspondence of Shortcuts to Adiabaticity
Creators: name: Okuyama, Manaka
name: Takahashi, Kazutaka
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate the theory of shortcuts to adiabaticity in classical mechanics. For a reference Hamiltonian, the counterdiabatic term is constructed from the dispersionless Korteweg-de Vries (KdV) hierarchy. Then the adiabatic theorem holds exactly for an arbitrary choice of time-dependent parameters. We use the Hamilton-Jacobi theory to define the generalized action. The action is independent of the history of the parameters and is directly related to the adiabatic invariant. The dispersionless KdV hierarchy is obtained from the classical limit of the KdV hierarchy for the quantum shortcuts to adiabaticity. This correspondence suggests some relation between the quantum and classical adiabatic theorems.
description: 5+4 pages, 4 figures, minor changes
A catalog of new Blazar candidates with Open Universe by High School students
Creators: name: Fronte, L.
name: Mazzon, B.
name: Metruccio, F.
name: Munaretto, N.
name: Doro, M.
name: Giommi, P.
name: Viale, I.
name: de Almeida, U. Barres
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Blazars are active galactic nuclei whose ultra-relativistic jets are coaligned with the observer direction. They emit throughout the whole e.m. spectrum, from radio waves to VHE gamma rays. Not all blazars are discovered. In this work, we propose a catalog of 54 new candidates based on the association of HE gamma ray emission and radio, X-ray an optical signatures. The relevance of this work is also that it was performed by four high school students from the Liceo Scientifico Statale Ugo Morin in Venice, Italy using the open-source platform Open Universe, in collaboration with the University of Padova. The framework of the activity is the Italian MIUR PCTO programme. The success of this citizen-science experience and results are hereafter reported and discussed.
description: Proceedings of the 12th Cosmic Ray International Symposium (CRIS 2022), 12-16 September 2022, Naples (Italy). Send correspondence to: michele.doro@unipd.it, giommipaolo@gmail.com
Optical wave evolution due to interaction with elastic wave in a phoxonic crystal slab waveguide
Creators: name: Aram, Mohammad Hasan
name: Khorasani, Sina
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Phoxonic crystal as a means of guiding and confining electromagnetic and elastic waves has already attracted attentions. Lack of exact knowledge on how these two types of waves interact inside this crystal and how electromagnetic wave evolves through this interaction has increased this field complexity. Here we explain how an elastic wave affects an electromagnetic wave through photo-elasticity and interface displacement mechanisms in a phoxonic crystal slab waveguide. We obtain a master equation which can describe electromagnetic wave evolution. In this equation we define a coupling parameter and calculate its value for different modes of electromagnetic and elastic waves and show it vanishes for some types of modes . Finally we solve the master equation for a typical phoxonic crystal slab waveguide and illustrate the electromagnetic wave evolution.