cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Transformation Approach that Makes SPAI, PSAI and RSAI Procedures Efficient for Large Double Irregular Nonsymmetric Sparse Linear Systems
Creators: name: Jia, Zhongxiao
name: Kang, Wenjie
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F10

description: A sparse matrix is called double irregular sparse if it has at least one relatively dense column and row, and it is double regular sparse if all the columns and rows of it are sparse. The sparse approximate inverse preconditioning procedures SPAI, PSAI($tol$) and RSAI($tol$) are costly and even impractical to construct preconditioners for a large sparse nonsymmetric linear system with the coefficient matrix being double irregular sparse, but they are efficient for double regular sparse problems. Double irregular sparse linear systems have a wide range of applications, and 4.4\% of the nonsymmetric matrices in the Florida University collection are double irregular sparse. For this class of problems, we propose a transformation approach, which consists of four steps: (i) transform a given double irregular sparse problem into a small number of double regular sparse ones with the same coefficient matrix $\hat{A}$, (ii) use SPAI, PSAI($tol$) and RSAI($tol$) to construct sparse approximate inverses $M$ of $\hat{A}$, (iii) solve the preconditioned double regular sparse linear systems by Krylov solvers, and (iv) recover an approximate solution of the original problem with a prescribed accuracy from those of the double regular sparse ones. A number of theoretical and practical issues are considered on the transformation approach. Numerical experiments on a number of real-world problems confirm the very sharp superiority of the transformation approach to the standard approach that preconditions the original double irregular sparse problem by SPAI, PSAI($tol$) or RSAI($tol$) and solves the resulting preconditioned system by Krylov solvers.
description: 20 pages, 4 figures
Weak colored local rules for planar tilings
Creators: name: Fernique, Thomas
name: Sablik, Mathieu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 37B50, 52C23, 03D80, 37B10

description: A linear subspace $E$ of $\mathbb{R}^n$ has colored local rules if there exists a finite set of decorated tiles whose tilings are digitizations of $E$. The local rules are weak if the digitizations can slightly wander around $E$. We prove that a linear subspace has weak colored local rules if and only if it is computable. This goes beyond the previous results, all based on algebraic subspaces. We prove an analogous characterization for sets of linear subspaces, including the set of all the linear subspaces of $\mathbb{R}^n$.
description: 30 pages, 10 figures
SU(4) Skyrmions in the $ν=\pm 1$ Quantum Hall State of Graphene
Creators: name: Lian, Yunlong
name: Rosch, Achim
name: Goerbig, Mark O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We explore different skyrmion types in the lowest Landau level of graphene at a filling factor $ν=\pm 1$. In addition to the formation of spin and valley pseudospin skyrmions, we show that another type of spin-valley entangled skyrmions can be stabilized in graphene due to an approximate SU(4) spin-valley symmetry that is affected by sublattice symmetry-breaking terms. These skyrmions have a clear signature in spin-resolved density measurements on the lattice scale, and we discuss the expected patterns for the different skyrmion types.
description: 5 pages, 3 figures ; 6 pages of supplementary material included ; version accepted for publication in PRL
Universal Mixed Elliptic Motives
Creators: name: Hain, Richard
name: Matsumoto, Makoto
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we construct a Q-linear tannakian category MEM_1 of universal mixed elliptic motives over the moduli space M_{1,1} of elliptic curves. It contains MTM, the category of mixed Tate motives unramified over the integers. Each object of MEM_1 is an object of MTM endowed with an action of SL_2(Z) that is compatible with its structure. Universal mixed elliptic motives can be thought of as motivic local systems over M_{1,1} whose fiber over the tangential base point d/dq at the cusp is a mixed Tate motive. The basic structure of the tannakian fundamental group of MEM is determined and the lowest order terms of all relations are found (using computations of Francis Brown), including the arithmetic relations, which describe the "infinitesimal Galois action". We use the presentation to give a new and more conceptual proof of the Ihara-Takao congruences.
description: 93 pages: many small improvements; should be final version
Asteroseismology of pulsating ultramassive white dwarfs
Creators: name: Uzundag, Murat
name: De Gerónimo, Francisco C.
name: Rebassa-Mansergas, Alberto
name: Brown, Alex
name: Córsico, Alejandro
Publisher: name: Zenodo
Year: 2024

description: Ultra-massive white dwarfs (UMWDs) are expected to harbor oxygen-neon (ONe) or carbon-oxygen (CO) cores, depending on the previous evolutionary history of their progenitors. These stars serve as excellent targets for studying various phenomena, from Type Ia supernovae explosions to merger events and the properties of strong magnetic fields. They provide an excellent opportunity to test the crystallization theory, formulated more than 50 years ago. Asteroseismic studies of these objects would allow us to shed light on their inner chemical structure and hence on the history of their progenitors. In this project, we conduct a photometric survey using OSIRIS and HiPERCAM, both attached to the Gran Telescopio Canarias (GTC). The primary objective is twofold: to significantly expand the known population of pulsating UMWDs and to perform a comprehensive asteroseismic analysis of each detected pulsating UMWD, employing updated theoretical evolutionary/pulsational models. We expect to be able to obtain their seismic masses, effective temperatures, surface gravities, and the most important features of chemical structure. Our preliminary results reveal the variability of two pulsating UMWDs within a sample of 13 stars. As our ongoing effort continues, we anticipate further discoveries. The high-quality data obtained from the GTC, complemented by observations from space missions such as TESS and PLATO, offers invaluable insights for advancing asteroseismic studies of UMWDs.
On $dS_4$ extremal surfaces and entanglement entropy in some ghost CFTs
Creators: name: Narayan, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In arXiv:1501.03019 [hep-th], the areas of certain complex extremal surfaces in de Sitter space were found to have resemblance with entanglement entropy in appropriate dual Euclidean non-unitary CFTs, with the area being real and negative in $dS_4$. In this paper, we study some toy models of 2-dim ghost conformal field theories with negative central charge with a view to exploring this further from the CFT point of view. In particular we consider $bc$-ghost systems with central charge $c=-2$ and study the replica formulation for entanglement entropy for a single interval, and associated issues arising in this case, notably pertaining to (i) the $SL(2)$ vacuum coinciding with the ghost ground state, and (ii) the background charge inherent in these systems which leads to particular forms for the norms of states (involving zero modes). This eventually gives rise to negative entanglement entropy. We also discuss a (logarithmic) CFT of anti-commuting scalars, with similarities in some features. Finally we discuss a simple toy model of two "ghost-spins" which mimics some of these features.
description: Latex, 34pgs, v2: ghost-spin section revised, v3: published version, minor clarifications added
Outcomes in Patients with Cancer Treated with Immunotherapy According to COVID19 Vaccination
Creators: name: Khaddour, Karam
Publisher: name: University of Illinois at Chicago
Year: 2023

description: Immune checkpoint inhibitor (ICI) monotherapy or in combination with other systemic treatment such as chemotherapy constitute the mainstay of treatment in metastatic cancers especially non-small cell lung cancer (NSCLC) and head and neck squamous cell cancer (HNSCC). Infectious vaccines administered intratumorally have been suggested to enhance anti-tumor immunity and improve host immune system function leading to better outcomes. However, no data are available on the effect of systemic administration of mRNA corona virus disease of 2019 (COVID-19) vaccines on clinical outcomes in patients treated with immunotherapy. The aim of the study is to investigate clinical outcomes in patients with metastatic NSCLC and HNSCC cancers who are treated with ICI including overall survival (OS), progression-free survival (PFS), and immune related adverse events (IRAEs) according to mRNA COVID-19 vaccination status. This exploratory study will highlight whether COVID-19 vaccination could lead to preferential outcomes and be synergistic to systemic immunotherapy or immunochemotherapy. In this IRB-approved study, we retrospectively analyzed clinical outcomes between (cohort A) of patients treated with ICI and who received at least one dose of an mRNA COVID-19 vaccine, and a historic control group of patients (cohort B) treated with ICI, and who did not receive mRNA COVID-19 vaccine and did not have documented COVID-19 infection. We included patients with metastatic NSCLC and HNSCC who were receiving ICI, either as monotherapy or in combination with chemotherapy. Patients were stratified by age, gender, ethnicity, COVID-19 vaccination status, number of vaccinations, COVID-19 infection status, treatment type (monotherapy versus combined), treatment line, and programmed-death ligand-1 (PD-L1) status. Major endpoints included overall survival, progression-free survival, and immune-related adverse events. A total of 151 patients met inclusion criteria (94 vaccinated and 57 control). Mean age at diagnosis was 62 years, the majority were female (51%), black (58.3%), and received ICI monotherapy (57.6%). There was prolonged OS in patients who received mRNA COVID-19 vaccination versus control group (p=0.04). There was no PFS difference between the two groups (p=0.13). In a multivariate analysis, patients in the COVID-19 arm were less likely to die (HR:0.049, p =0.044). There were no significant differences in the rate of IRAEs between vaccinated and non-vaccinated patients (p=0.71). In conclusion, in this sample of patients with metastatic NSCLC and HNSCC who received ICI, there was significant improvement in OS among patients in the COVID-19 arm (vaccinated patients) compared to the control group. There were no significant differences in IRAE, PFS. Further studies are required to assess whether there is a synergistic efficacy between mRNA COVID-19 vaccination and ICI.
Superimposed Pilots are Superior for Mitigating Pilot Contamination in Massive MIMO
Creators: name: Upadhya, Karthik
name: Vorobyov, Sergiy A.
name: Vehkapera, Mikko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, superimposed pilots are introduced as an alternative to time-multiplexed pilot and data symbols for mitigating pilot contamination in massive multiple-input multiple-output (MIMO) systems. We propose a non-iterative scheme for uplink channel estimation based on superimposed pilots and derive an expression for the uplink signal-to-interference-plus-noise ratio (SINR) at the output of a matched filter employing this channel estimate. Based on this expression, we observe that power control is essential when superimposed pilots are employed. Moreover, the quality of the channel estimate can be improved by reducing the interference that results from transmitting data alongside the pilots, and an intuitive iterative data-aided scheme that reduces this component of interference is also proposed. Approximate expressions for the uplink SINR are provided for the iterative data-aided method as well. In addition, we show that a hybrid system with users utilizing both time-multiplexed and superimposed pilots is superior to an optimally designed system that employs only time-multiplexed pilots, even when the non-iterative channel estimate is used to build the detector and precoder. We also describe a simple approach to implement this hybrid system by minimizing the overall inter and intra-cell interference. Numerical simulations demonstrating the performance of the proposed channel estimation schemes and the superiority of the hybrid system are also provided.
description: 16 two-column pages, 5 figures, Accepted for publication in IEEE Trans. Signal Processing
CBRAIN: a web-based, distributed computing platform for collaborative neuroinformatics research
Creators: name: Caron, Bryan
name: Adalat, Reza
name: Beck, Natacha
name: Boroday, Sergiy
name: Das, Samir
name: Khalili-Mahani, Najmeh
name: Lecours-Boucher, Xaver
name: Pham, Xuan Mai
name: Quesnel, Darcy
name: RIoux, Pierre
name: Valevicius, Darius
name: Evans, Alan
Publisher: name: Zenodo
Year: 2023
Subjects: Neuroinformatics and data sharing
Databasing and data sharing
Workflows
Computational Neuroscience
Data Analysis

description: Accepted abstract and poster presentation for the Organization of Human Brain Mapping conference (OHBM 2023) in Montreal, Quebec Canada.
Chaos and ergodicity in entangled non-ideal Bohmian qubits
Creators: name: Tzemos, Athanasios C.
name: Contopoulos, George
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Bohmian dynamics of a large class of bipartite systems of non-ideal qubit systems, by modifying the basic physical parameters of an ideal two-qubit system, made of coherent states of the quantum harmonic oscillator. First we study the case of coherent states with truncated energy levels and large amplitudes. Then we study non-truncated coherent states but with small amplitudes and finally a combination of the above cases. In all cases we find that the chaotic Bohmian trajectories are approximately ergodic. We also study the number and the spatial arrangement of the nodal points of the wavefunction and their role both in the formation of chaotic-ergodic trajectories, and in the emergence of ordered trajectories. Our results have strong implications on the dynamical establishment of Born's rule.
description: 31 pages, 21 Figures
title: Pulmonary interstitial emphysema after lung transplantation: an early sign of chronic lung allograft rejection.
Creators: name: Walgrave, Lucas
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Chest imaging
subject: Respiratory system
subject: Thorax
subject: CT
subject: CT-High Resolution
subject: Complications
subject: Diagnostic procedure
subject: Surgery
subject: Transplantation
subject: Clinical Cases

description: Clinical History: We present a case of a 25-year-old male who was hospitalized due to respiratory deterioration several years after bilateral lung transplantation. He had a history of neonatal bronchiolitis obliterans and recurrent infections, leading to severe bronchiectasis and organizing pneumonia, warranting lung transplantation.

description: 25 years, male
Using the 2-MASS Photometric Redshift Survey to optimize LIGO Follow-Up Observations
Creators: name: Antolini, Elisa
name: Heyl, Jeremy S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The initial discovery of LIGO on 14 September 2015 was the inspiral merger and ring-down of the black hole binary at a distance of about 500~Mpc or a redshift of about 0.1. The search for electromagnetic counterparts for the inspiral of binary black holes is impeded by coarse initial source localisations and a lack of a compelling model for the counterpart; therefore, rapid electromagnetic follow-up is required to understand the astrophysical context of these sources. Because astrophysical sources of gravitational radiation are likely to reside in galaxies, it would make sense to search first in regions where the LIGO-Virgo probability is large and where the density of galaxies is large as well. Under the assumption that the probability of a gravitational-wave event from a given region of space is proportional to the density of galaxies within the probed volume, one can calculate an improved localisation of the position of the source simply by multiplying the LIGO-Virgo skymap by the density of galaxies in the range of redshifts. We propose using the 2-MASS Photometric Redshift Galaxy Catalogue for this purpose and demonstrate that using it can dramatically reduce the search region for electromagnetic counterparts.
description: 8 pages, 6 figures, accepted for Monthly Notices
Möbius Kondo Insulators
Creators: name: Chang, Po-Yao
name: Erten, Onur
name: Coleman, Piers
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Heavy fermion materials have recently attracted attention for their potential to combine topological protection with strongly correlated electron physics. To date, the ideas of topological protection have been restricted to the heavy fermion or "Kondo" insulators with the simplest point-group symmetries. Here we argue that the presence of nonsymmorphic crystal symmetries in many heavy fermion materials opens up a new family of topologically protected heavy electron systems. Re-examination of archival resistivity measurements in nonsymmorphic heavy fermion insulators Ce$_3$Bi$_4$Pt$_3$ and CeNiSn reveals the presence of low temperature conductivity plateau, making them candidate members of the new class of material. We illustrate our ideas with a specific model for CeNiSn, showing how glide symmetries generate surface states with a novel Mobius braiding that can be detected by ARPES or non-local conductivity measurements. One of the interesting effects of strong correlation, is the development of partially localization or "Kondo breakdown" on the surfaces, which transforms Mobius surface states into quasi-one dimensional conductors, with the potential for novel electronic phase transitions.
description: Revised version. 24 pages, 9 figures, accepted by Nature Physics
Visual inference for the funnel plot
Creators: name: Kossmeier, Michael
name: Tran, Ulrich
name: Voracek, Martin
Publisher: name: Open Science Framework
Year: 2022

description: R code to create all figures in Kossmeier, Tran, & Voracek (2018) Visual inference for the funnel plot in meta-analysis. Manuscript submitted for publication.
Wave-Particle Duality in N-Path Interference
Creators: name: Qureshi, Tabish
name: Siddiqui, Mohd Asad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bohr's principle of complementarity, in the context of a two-slit interference experiment, is understood as the quantitative measures of wave and particle natures following a duality relation ${\mathcal D}^2+{\mathcal V}^2 \le 1$. Here ${\mathcal D}$ is a measure of distinguishability of the two paths, and ${\mathcal V}$ is the visibility of interference. It is shown that such a relation can be formulated for $N-$slit or $N-$path interference too, with the proviso that the wave nature is characterized by a measure of {\em coherence} (${\mathcal C}$). This new relation, ${\mathcal D}^2+{\mathcal C}^2 \le 1$ is shown to be tight, and reduces to the known duality relation for the case $N=2$. A recently introduced similar relation (Bagan et al., 2016) is shown to be inadequate for the purpose.
description: 5 pages, 2 figures, revised version, accepted in Annals of Physics
ATHENA Toolkit for transforming the institutional culture in terms of gender aspects
Creators: name: Mendoza, Cira
name: Perello, Michelle
name: Santacruz, Marlene
Publisher: name: Zenodo
Year: 2022
Subjects: gender equality
gender equality plan (GEP)
Research performing organization (RPO)
Research funding organization (RFO)

description: The ATHENA project is funded by the European Commission under the topic of the Science with and for Society work programme SwafS-09-2018-2019-2020 ‘Supporting research organisations to implement gender equality plans’. ATHENA overall aims at supporting the development and implementation of Gender Equality Plans (GEPs) in 6 research performing organisations (RPOs) and 2 research funding organisations (RFOs) in Europe. To that purpose, Work Package (WP) 4 (named ‘GEPs development and implementation’) includes a specific task (T4.3) titled ‘Drafting a Toolbox for preparation of customized GEPs’, whose aim is to provide key tools, resources and recommendations to develop the GEPs. This deliverable is the result of this task, entitled ‘ATHENA Toolkit for transforming the institutional culture in terms of gender aspects’. The tools, resources and recommendations included herein are distributed into 8 thematic areas, which are presented in sections 2.2 and 3.
Undoing Seamlessness: Exploring Seams for Critical Visualization
Creators: name: Hengesbach, Nicole
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: While seamful design has been part of discourses and work within HCI contexts for some time, it has not yet been fully explored in data visualization design. At the same time, critics of visualization have been arguing that the representation of data as contextual, contingent, relational, partial, heterogeneous, and situated is currently lacking in visualization. Seamful visualization promises a fresh perspective on visualization design as we seek to find more expressive encodings and novel approaches to representing data that acknowledge their wider qualities and limitations. By consulting seams in other realms and exploring existing seams and seamfulness in visualization, this paper offers a foundation for conceptualizing seamful visualization, points towards the value of seams and seamfulness in critical visualization, and proposes principles for engaging with seamful visualization in practice and research.
Toward a comprehensive grid of Cepheid models with MESA. I. Uncertainties of the evolutionary tracks of intermediate-mass stars
Creators: name: Ziółkowska, Oliwia
name: Radosław, Smolec
name: Thoul, Anne
name: Farrell, Eoin
name: Rathour, Rajeev Singh
name: Hocdé, Vincent
Publisher: name: Zenodo
Year: 2024

description: Helium-burning stars, in particular Cepheids, are challenging to model, as the shape of the evolutionary tracks can be greatly affected by the choice of free parameters of the model. MESA (Modules for Experiments in Stellar Astrophysics) is a one-dimensional stellar evolution code that comes with a large number of free parameters that allow to model the physical processes in stellar interiors under many assumptions. The uncertainties that arise from this freedom are rarely discussed in the literature despite their impact on the evolution of the model. We calculate a grid of evolutionary models with MESA, varying several controls, like the solar mixture of heavy elements, mixing length theory prescription, nuclear reaction rates, the scheme to determine convective boundaries, atmosphere model, temporal and spatial resolution, and quantify their impact on age, effective temperature and luminosity at eight different points of evolution, from the main sequence till the end of core-helium burning. Our investigation was conducted for a full range of masses and metallicities expected for classical Cepheids. The uncertainties are significant, especially during core-helium burning, reaching or exceeding the observational uncertainties of luminosity and effective temperature for detached eclipsing binary systems.
Performance Analysis of an Unreliable $M/G/1$ Retrial Queue with Two-way Communication
Creators: name: Kumar, Muthukrishnan Senthil
name: Dadlani, Aresh
name: Kim, Kiseon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Efficient use of call center operators through technological innovations more often come at the expense of added operation management issues. In this paper, the stationary characteristics of an $M/G/1$ retrial queue is investigated where the single server, subject to active failures, primarily attends incoming calls and directs outgoing calls only when idle. The incoming calls arriving at the server follow a Poisson arrival process, while outgoing calls are made in an exponentially distributed time. On finding the server unavailable (either busy or temporarily broken down), incoming calls intrinsically join the virtual orbit from which they re-attempt for service at exponentially distributed time intervals. The system stability condition along with probability generating functions for the joint queue length distribution of the number of calls in the orbit and the state of the server are derived and evaluated numerically in the context of mean system size, server availability, failure frequency and orbit waiting time.
description: 12 pages, 6 figures
Report on the standardization landscape and applicable standards
Creators: name: Schmidt, Adam
name: Van Bekkum, Michael
name: Athanasiadou, Ifigeneia
Publisher: name: Zenodo
Year: 2021
Subjects: Standards, RAMI 4.0, standards analysis

description: This document contains an initial analysis of the standardization landscape, starting from needs of other WPs about existing standards that can be related, as well as the related standardization committees and organizations involved. It includes both a classification to position various standards and an analysis of a selection of standards deemed most relevant. Finally, this document provides an overview of white spots for standardization for MAS4AI.
Norm-variation of ergodic averages with respect to two commuting transformations
Creators: name: Durcik, Polona
name: Kovač, Vjekoslav
name: Škreb, Kristina Ana
name: Thiele, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 37A30, Secondary 42B15, 42B20

description: We study double ergodic averages with respect to two general commuting transformations and establish a sharp quantitative result on their convergence in the norm. We approach the problem via real harmonic analysis, using recently developed methods for bounding multilinear singular integrals with certain entangled structure. A byproduct of our proof is a bound for a two-dimensional bilinear square function related to the so-called triangular Hilbert transform.
description: 28 pages
Hunting for exotic doubly hidden-charm/bottom tetraquark states
Creators: name: Chen, Wei
name: Chen, Hua-Xing
name: Liu, Xiang
name: Steele, T. G.
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We develop a moment QCD sum rule method augmented by fundamental inequalities to study the existence of exotic doubly hidden-charm/bottom tetraquark states made of four heavy quarks. Using the compact diquark-antidiquark configuration, we calculate the mass spectra of these tetraquark states. There are 18 hidden-charm $cc\bar c\bar c$ tetraquark currents with $J^{PC} = 0^{++}$, $0^{-+}$, $0^{--}$, $1^{++}$, $1^{+-}$, $1^{-+}$, $1^{--}$, and $2^{++}$. We use them to perform QCD sum rule analyses, and the obtained masses are all higher than the spontaneous dissociation thresholds of two charmonium mesons, which are thus their dominant decay modes. The masses of the corresponding hidden-bottom $bb\bar b\bar b$ tetraquarks are all below or very close to the thresholds of the $Υ(1S)Υ(1S)$ and $η_b(1S)η_b(1S)$, except one current of $J^{PC}=0^{++}$. Hence, we suggest to search for the doubly hidden-charm states in the $J/ψJ/ψ$ and $η_c(1S)η_c(1S)$ channels.
description: 5 pages, 3 figures and 2 tables. published in PLB
Ethics framework
Creators: name: Jagielska, Monika
name: Bar, Gabriela
Publisher: name: Zenodo
Year: 2022
Subjects: Legal AI, Trustworthy AI, Ethical AI, Explainable AI, Transparency, Human oversight, Autonomy, Cybersecurity

description: Artificial Intelligence (AI) is having a huge impact in many areas of societal life, including the industry. Many different organisations around the world have launched a wide range of initiatives to establish ethical principles for the adoption of ethical AI. Due to the ethical, legal and privacy risks posed by the wide application of AI in smart factories, it is crucial that the MAS4AI pilots are consistent with widely adopted rules or existing laws. This document contains an initial analysis of ethical framework.
Neurons as an Information-theoretic Engine
Creators: name: Shimazaki, Hideaki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We show that dynamical gain modulation of neurons' stimulus response is described as an information-theoretic cycle that generates entropy associated with the stimulus-related activity from entropy produced by the modulation. To articulate this theory, we describe stimulus-evoked activity of a neural population based on the maximum entropy principle with constraints on two types of overlapping activities, one that is controlled by stimulus conditions and the other, termed internal activity, that is regulated internally in an organism. We demonstrate that modulation of the internal activity realises gain control of stimulus response, and controls stimulus information. A cycle of neural dynamics is then introduced to model information processing by the neurons during which the stimulus information is dynamically enhanced by the internal gain-modulation mechanism. Based on the conservation law for entropy production, we demonstrate that the cycle generates entropy ascribed to the stimulus-related activity using entropy supplied by the internal mechanism, analogously to a heat engine that produces work from heat. We provide an efficient cycle that achieves the highest entropic efficiency to retain the stimulus information. The theory allows us to quantify efficiency of the internal computation and its theoretical limit.
description: 16 pages, 4 figures; corrected four typos in the original submission
Less is More: CBRAIN Module for Input Parameter Reduction Using Boutiques Descriptors
Creators: name: Boroday, Sergiy
name: Adalat, Reza
name: Beck, Natacha
name: Das, Samir
name: Glatard, Tristan
name: Khalili-Mahani, Najmeh
name: Lecours-Boucher, Xavier
name: Pham, Xuan Mai
name: Quesnel, Darcy
name: Rioux, Pierre
name: Caron, Bryan
name: Evans, Alan
Publisher: name: Zenodo
Year: 2023
Subjects: Neuroinformatics and data sharing
Workflows
Informatics
Computational Neuroscience
Computing
Design and Analysis
Open Data
Open-Source Code
Other - Supercomputers

description: Accepted abstract and poster for presentation at the Organization for Human Brain Mapping (OHBM) Conference, July 2023.
Characterization of ST-Elevation Myocardial Infarction Cases: Association Between Specific Dispatcher-Assigned Dispatch Determinant Codes and Hospital-Confirmed STEMI Cases in Qatar
Creators: name: Rutschman, Ross
name: Alinier, Guillaume
name: Scott, Greg
name: Reimann, Thomas
name: Bounouh, Sonia Sliman
name: Castle, Nicholas R.
name: Olola, Christopher
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: ST-elevation myocardial infarction (STEMI) is an Acute Myocardial Infarction (AMI) with the greatest risk of death and disability. Getting diagnosed patients rapid definitive treatment at the correct facility is crucial in improving their outcome. Using a Question-and-Answer algorithm (Mobile Priority Dispatch System (MPDS®)), trained Emergency Medical Dispatchers (EMDs) can help identifying STEMI at the time of dispatch. This can assist Emergency Medical Services (EMS) pre-planning transport to potential STEMI-receiving hospitals. The study aimed to determine whether hospital-confirmed STEMI cases transported by ambulance are associated with certain dispatch determinant codes and identify the treatments performed. The retrospective study analyzed deidentified dispatch and hospital data of STEMI patients who were transported by Qatar’s Ambulance Service between January 2018 and May 2021. Data analysis compared patient demographics with dispatch measures, considering chief complaint and determinant codes, and Percutaneous Coronary Intervention (PCI) treatment received. A total of 3,724 STEMI cases with MPDS® dispatch codes were retrieved. After excluding patient transfer and pandemic-related cases, a final sample of 2,607 cases was analyzed. Most STEMI patients (86.0%) were classified as high priority levels at dispatch, had chest pain as chief complaint (62.9%), and were male (90.8%). Approximately, 99.0% of the STEMI patients received PCI treatment. Distributions of STEMI cases and PCI treatment did not significantly differ by patient demographics and dispatch measures. Qatar’s STEMI patients are more likely to be male and to receive adequate acute care irrespective of any demographic factor and despite potential language issues. This study highlights that the chief complaint may be described or interpreted differently when the questioning language is not their mother tongue, or when there is a language barrier between the caller, call taker, or when using the MPDS® protocols language or when self-translating questions instantly in another language. Therefore, EMDs should be made aware of the language differences and be encouraged to further clarify the chief complaint when appropriate. There may be a need for potential refinements of the MPDS® questioning algorithm and EMD training with AMI symptoms reinforcement. This could help improve their early identification of STEMI cases with non-classic chest pain symptoms.
Pockets of Positivity: School leaders’ Strategies for Developing School Inclusion for Students with Refugee and Asylum-seeking Backgrounds
Creators: name: Sellers, M.
name: Imig, S.
Publisher: name: Living Refugee Archive, University of East London
Year: 2023

description: Currently, millions of children and families with refugee and asylum-seeker experiences find themselves living in new countries, with different languages, dissimilar cultures, diverse expectations, and different forms of schooling. For school leaders, the challenge of integrating these students and their families, some of whom may have endured and be dealing with trauma and loss, can be challenging. This paper presents findings from a study involving twenty-two school leaders in five English-speaking Western countries (Australia, England, New Zealand, Northern Ireland and the United States), who have created places of wellbeing and belonging for these families. Five major findings from the research are discussed and suggestions for school leaders are offered. Of note, school leaders working with children and families with refugee and asylum-seeker experiences are encouraged to identify and implement high-quality ongoing professional development for staff. These leaders must learn to work within and to modify existing school policies that often have deleterious effects on this group of students and become adept at navigating the web of external resources and organisations that can offer support beyond what schools can provide. This research also offers suggestions for educator/teacher preparation programs as it is evident that working with and supporting this population is not a competency covered in most training programs.
Development of the planning agent
Creators: name: Siatras Vasilis
name: Bakopoulos, Emmanouil
name: Mavrothalassitis, Panagiotis
name: Alexopoulos, Kosmas
Publisher: name: Zenodo
Year: 2022
Subjects: Implementation Technologies, Planning Agent, Deviation Agent, Multi-Agent System, Heuristic Optimization, Optimization Toolbox

description: This report focusses on the development and provide screenshots of the final prototypes of the planning and deviation agents of MAS4AI project that will be able to carry out the assignment of the production tasks and processes in the different resources. The motivation behind this deliverable is to increase the company's overall economic benefit and without disrupting, or keeping the disruption to minimum, the customers' deadlines by developing more accurate agents for scheduling matching the user-defined criteria.
Production of extra quarks at the Large Hadron Collider beyond the Narrow Width Approximation
Creators: name: Moretti, Stefano
name: O'Brien, Dermot
name: Panizzi, Luca
name: Prager, Hugo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper explores the effects of both finite width and interference (with background) in the pair production and decay of extra heavy quarks with charge 2/3 at the Large Hadron Collider (LHC). This dynamics is normally ignored in standard experimental searches and we assess herein the regions of validity of current approaches, also evaluating the performances of a set of current experimental analyses at 8 and 13 TeV for the deterimination of the excluded regions in the $(M_{\rm VLQ},Γ_{\rm VLQ})$ plane, $M_{\rm VLQ}$ being the mass of the VLQ and $Γ_{\rm VLQ}$ its width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.
description: 19 pages, 18 figures, added analysis of constraints by LHC searches
Characterization of ST-Elevation Myocardial Infarction cases: Association between specific dispatcher-assigned dispatch determinant codes and hospital-confirmed STEMI cases in Qatar
Creators: name: Rutschman, Ross
name: Alinier, Guillaume
name: Scott, Greg
name: Reimann, Thomas
name: Bounouh, Sonia Sliman
name: Castle, Nicholas R.
name: Olola, Christopher
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: ST-elevation myocardial infarction (STEMI) is an Acute Myocardial Infarction (AMI) with the greatest risk of death and disability. Getting diagnosed patients rapid definitive treatment at the correct facility is crucial in improving their outcome. Using a Question-and-Answer algorithm (Mobile Priority Dispatch System (MPDS®)), trained Emergency Medical Dispatchers (EMDs) can help identifying STEMI at the time of dispatch. This can assist Emergency Medical Services (EMS) pre-planning transport to potential STEMI-receiving hospitals. The study aimed to determine whether hospital-confirmed STEMI cases transported by ambulance are associated with certain dispatch determinant codes and identify the treatments performed. The retrospective study analyzed deidentified dispatch and hospital data of STEMI patients who were transported by Qatar’s Ambulance Service between January 2018 and May 2021. Data analysis compared patient demographics with dispatch measures, considering chief complaint and determinant codes, and Percutaneous Coronary Intervention (PCI) treatment received. A total of 3,724 STEMI cases with MPDS® dispatch codes were retrieved. After excluding patient transfer and pandemic-related cases, a final sample of 2,607 cases was analyzed. Most STEMI patients (86.0%) were classified as high priority levels at dispatch, had chest pain as chief complaint (62.9%), and were male (90.8%). Approximately, 99.0% of the STEMI patients received PCI treatment. Distributions of STEMI cases and PCI treatment did not significantly differ by patient demographics and dispatch measures. Qatar’s STEMI patients are more likely to be male and to receive adequate acute care irrespective of any demographic factor and despite potential language issues. This study highlights that the chief complaint may be described or interpreted differently when the questioning language is not their mother tongue, or when there is a language barrier between the caller, call taker, or when using the MPDS® protocols language or when self-translating questions instantly in another language. Therefore, EMDs should be made aware of the language differences and be encouraged to further clarify the chief complaint when appropriate. There may be a need for potential refinements of the MPDS® questioning algorithm and EMD training with AMI symptoms reinforcement. This could help improve their early identification of STEMI cases with non-classic chest pain symptoms.
Notes on compact nilspaces
Creators: name: Candela, Pablo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: General Topology (math.GN)
subject: FOS: Mathematics

description: These notes form the second part of a detailed account of the theory of nilspaces developed by Camarena and Szegedy. Here we focus on nilspaces equipped with a compact topology that is compatible with the cube structure, called compact nilspaces. The material in these notes relies on the first part of our exposition (available as arXiv:1601.03693), and it expands on the third chapter of the paper of Camarena and Szegedy, providing more detailed proofs of their results. To that end we also include several additional results that are implicit in their paper.
description: This version is formatted for the journal Discrete Analysis. New material has been added following comments from the referees. Additions include several examples throughout the text, and a classification result in the last subsection, involving the Heisenberg group
Public Web Portal
Creators: name: Nikolakis, Nikolaos
name: Anagiannis, Ioannis
name: Siaterlis, George
name: Bampoula, Xanthi
Publisher: name: Zenodo
Year: 2021
Subjects: Public; Web Portal

description: The MAS4AI Public Web Portal has been primarily developed for any user who would be interested in the content and the achievements of the MAS4AI project in the research field of predictive maintenance. The portal mainly aims to promote the MAS4AI project via the Internet and achieve worldwide dissemination of the knowledge of the project. Moreover, through the portal news and information, related to the project, will be published and communication between the project coordinator and everyone who is interested in the project will be facilitated.
Confronting a New Three-loop Seesaw Model with the 750 GeV Diphoton Excess
Creators: name: Ko, P.
name: Nomura, Takaaki
name: Okada, Hiroshi
name: Orikasa, Yuta
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new type of radiative neutrino model with a local hidden $U(1)$ symmetry, in which neutrino masses are induced at the three loop level, and discuss the muon anomalous magnetic moment, and dark matter candidates therein. By allowing the hypercharges larger than 3/2 for new fields that contribute to the neutrino masses and making them decay into the standard model fields appropriately, we introduce a lot of new particles with multiple electrical charges in a natural manner. As a by-product, we can accommodate the 750 GeV diphoton excess depending on the hypercharge quantum numbers of new fields responsible for the neutrino masses at the three loop level.
description: 34 pages, 9 figures, 1 table. arXiv admin note: text overlap with arXiv:1601.07339, arXiv:1601.04516, version to appear in PRD
Data Management Plan
Creators: name: Popper, Jens
name: Sidorenko, Aleksandr
Publisher: name: Zenodo
Year: 2022
Subjects: FAIR principles, data management, GDRP

description: The Data management plan aims give an overview on how data will be generated, collected, documented and saved within in the MAS4AI project. It relies on the Guidelines of FAIR Data management in Horizon 2020, which describes it as a key element that ensures how data is properly managed.
Modelo Canvas para la creación de servicicios de Alafabetización Informacional en Ciencia Abierta Universidad de Concepción
Creators: name: Cortés-Villegas, Rodrigo
name: Montaner Osses, Eduardo
name: Parra Vásquez, Valentina
name: Guzmán Seguel, Francisco
name: Cifuentes Rozas, Catalina
name: Castro, Arancibia Naomi
name: Ortiz Figueroa, Maximiliano
Publisher: name: Zenodo
Year: 2023
Subjects: Ciencia Abierta

description: A continuación, se presenta el desarrollo del Modelo para crear un Servicio de Alfabetización Informacional en Ciencia Abierta (ALFIN-CsAb) Bibliotecas Universidad de Concepción (UdeC). Utilizando, como estructura base el modelo INELLI para generar modelos de servicios innovadores en el ámbito Bibliotecario[1], los resultados de la encuesta en Ciencia Abierta UdeC aplicada a nivel institucional, considerando además los componentes de la Política de Acceso Abierto y Ciencia Abierta que promueve ANID. Este modelo se ha desarrollado por un equipo de bibliotecarios pertenecientes a la Universidad de Concepción (UdeC), ligados al contexto InES Ciencia Abierta a cargo de la Dirección de Bibliotecas: Directora Karen Jara y Subdirectora Paula Díaz (INCA 210004): [1] https://bibliotecariosinnovadores.com/herramientas/ Espacios-para-la-creación.pdf (bibliotecariosinnovadores.com) Este documento de trabajo presenta un conjunto de ideas, pautas e instrucciones que debe servir a cualquier profesional que trabaje en una biblioteca para ser capaz de diseñar y ejecutar proyectos innovadores en el ámbito de Ciencia Abierta[1] (INELLI). El modelo ofrece pautas para impulsar proyectos que estimulen la implementación de un espacio de co-creación colaborativa en el contexto Ciencia Abierta, que permita: El desarrollo de competencias informacionales a diversos usuarios. Mediante, la creación de programas alfabetización informacional o el desarrollo servicios especializado en esta área, entre otros. [1] International Network of Emerging Library Innovators (INELI). Modelo para la creación de espacios. Disponible en https://bibliotecariosinnovadores.com/
A family of non-split topologically slice links with arbitrarily large smooth slice genus
Creators: name: Park, JungHwan
name: Ray, Arunima
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: We construct an infinite family of topologically slice 2--component boundary links $\ell_i$, none of which is smoothly concordant to a split link, such that $g_4(\ell_i)=i$.
description: 10 pages, 7 figures; v2 includes minor changes based on referee comments, to appear in Proceedings of the AMS