cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Level of safety culture and associated factors in X Construction Company, Ethiopia.
Creators: name: Engidawork Kibneh
Publisher: name: Zenodo
Year: 2014

description: Introduction: Construction industry has a unique nature and considered as a

dangerous industry. Due to its characteristics, the promotion of safety management

and maintaining safe work environment is difficult and inadequate. Cost of injury and

accident incurred is higher in developing country like Ethiopia. Promoting and

maintaining safety culture is a new way of decreasing workplace accidents and

creating conducive environment in construction sector.

Objective: to assess the level of safety culture and factors associated with it in X

Construction Company, Ethiopia, 2014.

Methods: An Institutional based cross-sectional study was conducted. The sample

size of the study was 422 in X construction workers with a response rate of 95%.

The data was collected by using interview administered NOSACQ-50 questionnaire

and review of records of accident report, OHS company documents and walk

through survey using workplace observation checklist to support the Questionnaire.

The score of mean above 2.5 was considered as good safety culture and below the

mean as poor safety culture; as well the level of safety culture of the company was

indicated using mean score. Both Bivariate and multivariate logistic regression

analysis were used to determine the degree of association by using odds ratio with

95% CI. ANOVA was also used to calculate the mean differences of X construction

company sites
SNP_Variant_calling.fasta.txt
Creators: name: Tian, Zhongqiong
name: Jiang, Chaoyang
name: Shu, Yumin
name: Zhang, Huan
name: Lhag, Chong
name: Gan, xiaohong
Publisher: name: figshare
Year: 2023
Subjects: Phylogeny and comparative analysis

description: The raw data of SNP_Variant_calling based on RAD-seq of endangered plant Tetracentron sinense.
title: WAAM-Knoten im Stahlhochbau
Creators: name: Erven, Maren
Publisher: name: UNSPECIFIED
Year: 2024

description: Die vorliegende Arbeit untersucht, wie das Verfahren Wire Arc Additive Manufacturing (WAAM) zur Herstellung von individualisierten Knotenstrukturen für den Stahlhochbau genutzt und die Tragfähigkeit der gedruckten Strukturen sichergestellt werden kann. Hierzu werden einerseits etabliertes Wissen zum konventionellen Lichtbogenschweißen und andererseits aktuelle Forschungsergebnisse zum WAAM analysiert und Randbedingungen für die Herstellung festgelegt. Auf Grundlage eines festgelegten Parametersatzes wurden Probekörper hergestellt und das Materialverhalten mit Zugversuchen untersucht. Hierbei liegt der Fokus auf den Auswirkungen des Slicingansatzes - Belastungsrichtung, Bahnanzahl, Auskragungen und Kreuzungsstellen. Die Ergebnisse werden in ein Materialmodell für die finite Elemente Berechnung überführt. Weiterhin finden grundlegende Untersuchungen zu Lochleibungsverhalten und T-Stummelverhalten in WAAM-Schraubenverbindungen statt, welche mit Forschungsergebnissen anderer Institute verglichen werden. Die Erkenntnisse werden in Randbedingungen zum Entwurf von WAAM-Stahlbauknoten gebündelt und verschiedene Ansätze zum Entwurf vorgestellt. Der Ansatz des parametrisierten Knotenentwurfs wird weiterhin beispielhaft durchgeführt, der Knoten wird hergestellt, in einem zerstörenden Traglastversuch getestet und mit dem erstellten Materialmodell nachmodelliert. Zum Schluss werden Möglichkeiten zum Nachweis aufgezeigt und Ergebnisse in dem Kontext der Gegenwart und Zukunft bewertet.
A data-based parametrization of parton distribution functions
Creators: name: Carrazza, Stefano
name: Cruz-Martinez, Juan M.
name: Stegeman, Roy
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Since the first determination of a structure function many decades ago, all methodologies used to determine structure functions or parton distribution functions (PDFs) have employed a common prefactor as part of the parametrization. The NNPDF collaboration pioneered the use of neural networks to overcome the inherent bias of constraining the space of solution with a fixed functional form while still keeping the same common prefactor as a preprocessing. Over the years various, increasingly sophisticated, techniques have been introduced to counter the effect of the prefactor on the PDF determination. In this paper we present a methodology to remove the prefactor entirely, thereby significantly simplifying the methodology, without a loss of efficiency and finding good agreement with previous results.
description: 10 pages, 7 figures, final version published in EPJC
Verkehrsentwicklung als Untersuchungsrahmen
Creators: name: Wächter, Laura
name: Wachter, Isabelle
name: Randelhoff, Martin
name: Zimmermann, Karsten
name: Holz-Rau, Christian
Publisher: name: TU Dortmund
Year: 2022
Subjects: subject: Erreichbarkeit
subject: Verkehrswende
subject: Verkehr
subject: Mobilitätswende
subject: Mobilität
subject: 710

description: Dieses Arbeitspapier definiert für das Forschungsvorhaben des Projektes WIVER die Begriffe Verkehr, Mobilität und Erreichbarkeit und darauf basierend die Begriffe der Verkehrs- und Mobilitätswende. Ferner beleuchtet es die Entwicklungen des Verkehrssektors und somit auch die positiven und negativen Folgen der Verkehrsexpansion sowie umstrittene (nicht) realisierte push & pull-Maßnahmen. Darüber hinaus beinhaltet der Beitrag eine kritische Einordnung der technologischen Verbesserungen im Verkehrssektor, der neuen Verkehrsmittel und der Veränderungen des Verkehrsverhaltens, mit denen im Kontext der Verkehrs- und Mobilitätswende große Hoffnungen verbunden sind. Aufbauend darauf werden die Untersuchungsfragen des Projektes abgeleitet.
description: WIVER Arbeitspapiere;2
Geodesically complete black holes in Lorentz-violating gravity
Creators: name: Carballo-Rubio, Raúl
name: Di Filippo, Francesco
name: Liberati, Stefano
name: Visser, Matt
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a systematic study of the geometric structure of non-singular spacetimes describing black holes in Lorentz-violating gravity. We start with a review of the definition of trapping horizons, and the associated notions of trapped and marginally trapped surfaces, and then study their significance in frameworks with modified dispersion relations. This leads us to introduce the notion of universally marginally trapped surfaces, as the direct generalization of marginally trapped surfaces for frameworks with infinite signal velocities (Hořava-like frameworks), which then allows us to define universal trapping horizons. We find that trapped surfaces cannot be generalized in the same way, and discuss in detail why this does not prevent using universal trapping horizons to define black holes in Hořava-like frameworks. We then explore the interplay between the kinematical part of Penrose's singularity theorem, which implies the existence of incomplete null geodesics in the presence of a focusing point, and the existence of multiple different metrics. This allows us to present a complete classification of all possible geometries that neither display incomplete physical trajectories nor curvature singularities. Our main result is that not all classes that exist in frameworks in which all signal velocities are realized in Hořava-like frameworks. However, the taxonomy of geodesically complete black holes in Ho\v rava-like frameworks includes diverse scenarios such as evaporating regular black holes, regular black holes bouncing into regular white holes, and hidden wormholes.
description: 28 pages, 8 figures
title: Brunn’s cyst – An uncommon cause of urinary outlet obstruction
Creators: name: Kalia, Vibhuti
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Uroradiology & genital male imaging
subject: Pelvis
subject: Urinary Tract / Bladder
subject: Ultrasound
subject: Diagnostic procedure
subject: Cysts
subject: Clinical Case

description: Clinical History: A 55-year-old male presented in the emergency with bladder outflow obstruction without any haematuria. Past medical history was significant for cauda equina secondary to a motor vehicle accident that required L5 laminectomy. He was referred to the imaging department for assessment of kidneys, urinary bladder and prostate.

description: 55 years, male
Deformations of half-sided modular inclusions and non-local chiral field theories
Creators: name: Lechner, Gandalf
name: Scotford, Charley
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We construct explicit examples of half-sided modular inclusions ${\mathcal N}\subset{\mathcal M}$ of von Neumann algebras with trivial relative commutants. After stating a general criterion for triviality of the relative commutant in terms of an algebra localized at infinity, we consider a second quantization inclusion ${\mathcal N}\subset{\mathcal M}$ with large relative commutant and construct a one-parameter family ${\mathcal N}_κ\subset{\mathcal M}_κ$, $κ\geq0$, of half-sided inclusions such that ${\mathcal N}_0={\mathcal N}$, ${\mathcal M}_0={\mathcal M}$ and ${\mathcal N}_κ'\cap{\mathcal M}_κ={\mathbb C}1$ for $κ>0$. The technique we use is an explicit deformation procedure (warped convolution), and we explain the relation of this result to the construction of chiral conformal quantum field theories on the real line and on the circle.
description: 23 pages, 1 figure
OPTIMIZING WIND FARM LAYOUTS USING HISTORICAL DATA AND COMPUTATIONAL FLUID DYNAMICS: A COMPUTATIONAL FRANDSEN WAKE MODEL AND DIFFERENTIAL EVOLUTION ALGORITHM
Creators: name: Osadolor, Alexander Osayimwense
name: Showole, Afeez Olamide
name: Asamoah, Gideon Akwasi
name: Eze, Tochukwu Judethaddeus
Publisher: name: SADI Journal
Year: 2024
Subjects: SCADA Data Analysis, Renewable Energy, Sustainability, Wind Turbine Spacing, Wind Turbine Performance, Differential Evolution Algorithm

description: The increasing demand for sustainable energy solutions has heightened the importance of optimizing wind farm layouts to enhance efficiency and energy output. This study investigates the optimization of wind turbine placement using historical SCADA data, computational fluid dynamics (CFD), and Differential Evolution (DE) algorithms. We analyzed a comprehensive wind turbine dataset, which included wind speed, active power, theoretical power curves, and wind direction data. The analysis revealed a direct relationship between wind speed and power output, with discrepancies observed at both low and high wind speeds due to system inefficiencies and turbine power limits. The Frandsen wake model was employed to account for the wake losses, while the Differential Evolution algorithm was used to optimize the turbine positions to develop an optimal layout for 100 turbines within a minimum area of 21.6 km², aiming to minimize the wake effects and maximize the energy production. The results demonstrate that proper turbine alignment and spacing significantly improve the efficiency, allowing the turbines to operate closer to their theoretical maximum efficiency. The findings highlight the critical role of integrating historical wind data with CFD simulations to optimize turbine placement and performance. This work offers a valuable framework for future windfarm designs, emphasizing the benefits of data-driven approaches in maximizing renewable energy generation and operational efficiency
Dual-Update Data-Driven Control of Deformable Mirrors Using Walsh Basis Functions
Creators: name: Haber, Aleksandar
name: Bifano, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we develop a novel data-driven method for Deformable Mirror (DM) control. The developed method updates both the DM model and DM control actions that produce desired mirror surface shapes. The novel method explicitly takes into account actuator constraints and couples a feedback control algorithm with an algorithm for recursive estimation of DM influence function models. In addition to this, we explore the possibility of using Walsh basis functions for DM control. By expressing the desired and observed mirror surface shapes as sums of Walsh pattern matrices, we formulate the control problem in the 2D Walsh basis domain. We thoroughly experimentally verify the developed approach on a 140-actuator MEMS DM, developed by Boston Micromachines. Our results show that the novel method produces the root-mean-square surface error in the $14-40$ nanometer range. These results can additionally be improved by tuning the control and estimation parameters. The developed approach is also applicable to other DM types, such as for example, segmented DMs.
description: 25 pages, 11 figures
Coherent scattering of low mass dark matter from optically trapped sensors
Creators: name: Afek, Gadi
name: Carney, Daniel
name: Moore, David C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a search for low mass dark matter particles through momentum recoils caused by their scattering from trapped, nm-scale objects. Our projections show that even with a modest array of fg-mass sensors, parameter-space beyond the reach of existing experiments can be explored. The case of smaller, ag-mass sensors is also analyzed - where dark matter can coherently scatter from the entire sensor - enabling a large enhancement in the scattering cross-section relative to interactions with single nuclei. Large arrays of such sensors have the potential to explore new parameter space down to dark matter masses as low as 10 keV. If recoils from dark matter are detected by such sensors, their inherent directional sensitivity would allow an unambiguous identification of a dark matter signal.
description: 5 pages, 3 figures
title: The "autonomy" of developing countries in the Olympic Movement: Assessing the fate of sports governance transplants in the Global South
Creators: name: García, Borja
name: Meier, Henk Erik
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 790 Recreational and performing arts

description: Introduction: The International Olympic Committee (IOC) imposes very specific ideas on sports governance, more precisely on sports autonomy, on countries joining the Olympic Movement. Given that the idea of sports autonomy originated in the Global North, this article introduces the concept of governance transplants to evaluate the impact that being part of the Olympic Movement has on domestic sports governance in Global South developing countries. The article explores the extent to which the IOC is successful in implementing the norms and regulations on sports autonomy as a governance transplant at the national level in countries from the Global South that are part of the Olympic Movement. Methods: The article employs a comparative qualitative case study research design that explores the relations of the IOC, National Olympic Committees (NOCs), and national governments in Botswana, Guatemala and Sri Lanka. Research relies on a mix of document analyses and expert semi-structured interviews conducted during field trips to those countries. Interviews were transcribed and analyzed by means of thematic analysis. The analyses focus on domestic policies and contexts, formal and institutional compliance with sports autonomy, provision of public funding, and participation in national sport policy-making. Results and discussion: Findings suggest that national structures and legacies have an impact on the way in which the autonomy of sport, as the governance transplant, is translated in those three countries. Although national governments enjoy some agency in "translating" governance transplants, results also suggest that misfits and tensions persist between governmental and sport stakeholders at the national and international level. Such misfits might force the IOC, as a private transnational regulator, to adopt a more pragmatic view on the enforcing of its governance transplants. The results are of relevance to existing discussions on global sports governance and debates as to whether the countries in the Global North might be able to impose their views and their governance transplants if the Global South gets a greater say in transnational sports governance.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
On the CFT describing the spin clusters in 2d Potts model
Creators: name: Picco, Marco
name: Santachiara, Raoul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We have considered clusters of like spin in the Q-Potts model, the spin Potts clusters. Using Monte Carlo simulations, we studied these clusters on a square lattice with periodic boundary conditions for values of Q in [1,4]. We continue the work initiated with Delfino and Viti (2013) by measuring the universal finite size corrections of the two-point connectivity. The numerical data are perfectly compatible with the CFT prediction, thus supporting the existence of a consistent CFT, still unknown, describing the connectivity Potts spin clusters. We provided in particular new insights on the energy field of such theory. For Q=2, we found a good agreement with the prediction that the Ising spin clusters behave as the Fortuin-Kasteleyn ones at the tri-critical point of the dilute 1-Potts model. We show that the structure constants are likely to be given by the imaginary Liouville structure constants, consistently with the results of Delfino et al. (2013) and of Ang and Sun (2021). For Q different from 2 instead, the structure constants we measure do not correspond to any known bootstrap solutions. The validity of our analysis is backed up by the measures of the spin Potts clusters wrapping probability for Q=3. We evaluate the main critical exponents and the correction to the scaling. A new exact and compact expression for the torus one-point of the Q-Potts energy field is also given.
description: 29 pages, 11 Figures
title: Les soins spirituels lors d'une rupture de la trajectoire de vie
title: Les soins spirituels lors d'une rupture de la trajectoire de vie
titleType: AlternativeTitle
Creators: name: Bezzola, Eléna
name: Lo Cicero, Bruna
name: Soriano, Lucía
Publisher: name: Unknown
Year: 0
Subjects: subject: Collaboration interprofessionnelle
subject: Santé communautaire
subject: Stage en Soins infirmiers

description: Ce projet a été effectué dans le cade de notre travail de Bachelor en immersion communautaire, pour lequel nous avons travaillé en interprofessionnalité avec des étudiantes en médecine. Il est composé de deux volets :Concernant le premier volet, nous avons collaboré avec deux étudiantes en médecine pour créer une partie commune. Cette expérience nous a conduites à passer deux semaines en immersion communautaire à la Communauté des Diaconesses de St-Loup, située à Pompaples.Nous présenterons tout d’abord le contexte de ce travail en collaboration, où nous décrirons notre problématique et la question de recherche établie. Ensuite, nous présenterons la méthode choisie pour répondre à notre question de recherche. Le résultat de ce premier volet est le protocole de recherche, l’abstract ainsi que le poster, que vous trouverez en annexe.Le deuxième volet concerne le complément infirmier que nous, les trois étudiantes infirmières, avons développé. Ce volet est en accord avec le présent travail, répondant ainsi aux exigences du travail de Bachelor. Il portera une attention particulière aux enjeux de notre profession qui émergent de ce projet. Pour cela, nous allons présenter notre perspective infirmière pertinente en analysant notre travail selon le modèle de J. Watson, théoricienne phare de notre profession infirmière. Finalement, nous allons présenter la plus-value de la collaboration interprofessionnelle et nous conclurons ce travail en présentant les pistes essentielles qui ont émergé de ce projet en immersion communautaire interprofessionnelle...
CO2-Reduktion in der Zement- und Kalkindustrie – Wie vermeidet man unvermeidbare Emissionen?
Creators: name: Bellmann, Erika
Publisher: name: Universität Hamburg
Year: 2023
Subjects: CO2 in cement industry, CO2 in lime industry, avoid unavoidable emissions, cement and lime industry, goal of climate neutrality, cement clinker, lime stone, Carbon Capture and Storage, CCS, cement demand

description: CO2 reduction in the cement and lime industry - How to avoid unavoidable emissions? CO2 emissions of the cement and lime industry are an especially challenging topic for the climate policy debates, because the process emissions from these industries are unavoidable. To reach the goal of climate neutrality, it is necessary to minimize the consumption of cement clinker and other products made from lime stone, as well as to utilize Carbon Capture and Storage (CCS) to capture and permanently store CO2. In highly developed industrial countries with a projected reduction in population, such as Germany, the demand for cement could drop to half of current consumption. Worldwide, however, a constant demand is expected despite ambitious reduction measures. Therefore, implementation of CCS is key to achieving a climate neutral cement and lime industry. Technical questions are largely solved and main barriers to a fast and wide-spread implementation are mainly a lack of regulatory frame work and a low public acceptance of the technology.
Compactified AdS black holes, Chamblin-Reall background, and their dual non-conformal relativistic fluids
Creators: name: Wu, Chao
name: Wang, Yanqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Chamblin-Reall background is a static solution of Einstein gravity coupled with a background scalar field and a dynamical domain wall, with the potential of the scalar field being of Liouville type. It can be got by dimensionally reducing a higher dimensional background with a constant potential. Compactified AdS black holes are black hole backgrounds constructed by wrapping one or more spatial directions of a higher dimensional AdS black hole on a torus and then integrating them out. The compactified AdS black hole background is asymptotically flat, non-conformal, and of Chamblin-Reall type. In this work, we derive all the 7 dynamical second-order transport coefficients for the relativistic fluids dual to compactified AdS black holes of various dimensions via fluid/gravity correspondence. Through this work, we achieve three main goals: (1) We prove that all the gravitational backgrounds that can be used to extract analytical results for second-order transport coefficients hitherto are all Chamblin-Reall type backgrounds. (2) We generalize the results in previous studies on the second-order transport coefficients of the relativistic fluids dual to 5-dimensional Chamblin-Reall model into general dimensions. (3) We offer a thorough study on the Kanitscheider-Skenderis proposal and find its physical accounts.
description: 38 pages and 2 tables
Dynamical fixed points in holography
Creators: name: Buchel, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Typically, an interactive system evolves towards thermal equilibrium, with hydrodynamics representing a universal framework for its late-time dynamics. Classification of the dynamical fixed points (DFPs) of a driven Quantum Field Theory (with time dependent coupling constants, masses, external background fields, etc.) is unknown. We use holographic framework to analyze such fixed points in one example of strongly coupled gauge theory, driven by homogeneous and isotropic expansion of the background metric - equivalently, a late-time dynamics of the corresponding QFT in Friedmann-Lemaitre-Robertson-Walker Universe. We identify DFPs that are perturbatively stable, and those that are perturbatively unstable, computing the spectrum of the quasinormal modes in the corresponding holographic dual. We further demonstrate that a stable DFP can be unstable non-perturbatively, and explain the role of the entanglement entropy density as a litmus test for a non-perturbative stability. Finally, we demonstrated that a driven evolution might not have a fixed point at all: the entanglement entropy density of a system can grow without bounds.
description: 48 pages, 19 figures
Discriminating the heavy jet production mechanisms in associated $Z$ + heavy flavor events at the LHC
Creators: name: Baranov, S. P.
name: Martinez, A. Bermudez
name: Jung, H.
name: Lipatov, A. V.
name: Malyshev, M. A.
name: Monfared, S. Taheri
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We reconsider the associated $Z$ boson and charm or beauty jet production at the LHC with paying special attention to the formation dynamics of heavy jets. Two different approaches are studied: first one, where heavy quarks are produced in the hard scattering subprocesses, implemented in the Monte-Carlo generator PEGASUS, and another scenario, where the hard scattering is calculated at NLO with MadGraph5_aMC@NLO and TMD parton shower is included (implemented in the Monte-Carlo generator CASCADE3). We compare the predictions obtained in both schemes with latest experimental data for associated $Z + b$ production cross sections and the relative production rate $σ(Z + c)/σ(Z + b)$ collected by the ATLAS and CMS Collaborations at $\sqrt s = 13$~TeV. We introduce two kinematic observables (denoted as $z_b$ and $p_T^{\rm rel}$) which can be used to discriminate the heavy jet production mechanisms. Using these variables we trace the shape of the simulated $b$-jet events and recommend that these observables be taken into consideration in the forthcoming experimental analyses.
description: 11 pages, 4 figures
Groove, contrabaixo elétrico e o samba afro-brasileiro
Creators: name: Arruda, Manasses Morais de
Publisher: name: Zenodo
Year: 2023
Subjects: Groove
Samba
Elétric bass

description: Resumo O groove é frequentemente relacionado à experiência do movimento do corpo produzida pelo som e às estruturas musicais como síncope, circularidade, repetição, desvios de microtempo. Todas essas estruturas e mesmo uma ideia de groove se aproximam de características significantes do samba afro-brasileiro, onde o contrabaixo elétrico atua de maneira complexa, sustentando elementos rítmicos, melódicos e harmônicos. Esta investigação busca identificar os aspectos interpretativos e as especificidades do fenômeno de produção do groove na performance musical com o contrabaixo elétrico, no contexto do samba. Além de uma revisão do tema na literatura, utilizou-se métodos qualitativos e quantitativos para a composição de um conjunto de informações mais compreensivo sobre o groove no contexto do samba, incluindo experimentos com sujeitos e análises auxiliadas por computador. Os resultados representam uma abordagem original da complexidade do tema em sua relação com a performance e apontam para um aprofundamento das definições no contexto semântico e cultural do samba. Dados coletados na investigação traçam um detalhamento original sobre a relação entre o conceito, performance, técnicas, recursos e construção de discursos musicais relacionados ao samba e ao groove. Abstract The groove is often related to the experience of body movement produced by sound and to musical structures such as syncope, circularity, repetition, microtiming deviations. All these structures and even an idea of groove are close to meaningful characteristics of the Afro-Brazilian samba, where the function of the electric bass role is complex: it sustains rhythmic, melodic and harmonic musical elements of samba music. This research seeks to identify the interpretative aspects and the specificities of the phenomenon of groove production in musical performance with the electric bass, in the context of samba culture. In addition to a literature review of the topic, qualitative and quantitative methods were used to compose a more comprehensive viewpoint of information about groove in the samba context, including experiments with subjects and computer-aided analyses. The results represent an original approach to the complexity of the topic in its relation to performance, and point to further definitions of the groove in the semantic and cultural context of samba. Data collected in the investigation provide an original insight into the relationship between the concept, performance, techniques, resources and the construction of musical discourses related to samba and groove.
GASKAP Pilot Survey Science II: ASKAP Zoom Observations of Galactic 21-cm Absorption
Creators: name: Dickey, J. M.
name: Dempsey, J. M.
name: Pingel, N. M.
name: McClure-Griffiths, N. M.
name: Jameson, K.
name: Dawson, J. R.
name: Dénes, H.
name: Clark, S. E.
name: Joncas, G.
name: Leahy, D.
name: Lee, Min-Young
name: Miville-Deschênes, M. -A.
name: Stanimirović, S.
name: Tremblay, C. D.
name: van Loon, J. Th.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the Australian Square Kilometre Array Pathfinder to measure 21-cm absorption spectra toward continuum background sources, we study the cool phase of the neutral atomic gas in the far outer disk, and in the inner Galaxy near the end of the Galactic bar at longitude 340 degrees. In the inner Galaxy the cool atomic gas has a smaller scale height than in the solar neighborhood, similar to the molecular gas and the superthin stellar population in the bar. In the outer Galaxy the cool atomic gas is mixed with the warm, neutral medium, with the cool fraction staying roughly constant with Galactic radius. The mean spin temperature, i.e. the ratio of the emission brightness temperature to the absorption, is roughly constant for velocities corresponding to Galactic radius greater than about twice the solar circle radius. The ratio has a value of about 300 K, but this does not correspond to a physical temperature in the gas. If the gas causing the absorption has kinetic temperature of about 100 K, as in the solar neighborhood, then the value 300 K indicates that the fraction of the gas mass in this phase is one-third of the total HI mass.
description: 29 pages, 12 figures, submitted to Astrophysical Journal
Dramatic changes in the observed velocity of the accretion disk wind in MCG-03-58-007 are revealed by XMM-Newton and NuSTAR
Creators: name: Braito, V.
name: Reeves, J. N.
name: Matzeu, G.
name: Severgnini, P.
name: Ballo, L.
name: Cicone, C.
name: Della Ceca, R.
name: Giustini, M.
name: Sirressi, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Past X-ray observations of the nearby Seyfert 2 MCG-03-58-007 revealed the presence of a powerful and highly variable disk wind, where two possible phases outflowing with $v_{\rm out1}/c\sim -0.07$ and $v_{\rm out2}/c\sim -0.2$ were observed. Multi-epoch X-ray observations, covering the period from 2010 to 2018, showed that the lower velocity component is persistent, as it was detected in all the observations, while the faster phase outflowing with $v_{\rm out2}/c\sim -0.2$ appeared to be more sporadic. Here we present the analysis of a new monitoring campaign of MCG-03-58-007 performed in May-June 2019 and consisting of four simultaneous XMM-Newton & NuSTAR observations. We confirm that the disk wind in MCG-03-58-007 is persistent, as it is detected in all the observations, and powerful, having a kinetic power that ranges between 0.5-10% of the Eddington luminosity. The highly ionized wind (log($ ξ/{\rm erg\,cm \,s^{-1}})\sim 5$) is variable in both the opacity and remarkably in its velocity. This is the first time where we have observed a substantial variability of the outflowing velocity in a disk wind, which dropped from $v_{\rm {out}}/c\sim -0.2$ (as measured in the first three observations) to $v_{\rm {out}}/c\sim -0.074$ in just 16 days. We conclude that such a dramatic and fast variability of the outflowing velocity could be due to the acceleration of the wind, as recently proposed by Mizumoto et al. (2021). Here, the faster wind, seen in the first three observations, is already accelerated to $v_{\rm {out}}/c \sim -0.2$, while in the last observation our line of sight intercepts only the slower, pre-accelerated streamline.
description: 23 pages, 10 figures. Accepted for publication in ApJ
EvoLearner: Learning Description Logics with Evolutionary Algorithms
Creators: name: Heindorf, Stefan
name: Blübaum, Lukas
name: Düsterhus, Nick
name: Werner, Till
name: Golani, Varun Nandkumar
name: Demir, Caglar
name: Ngomo, Axel-Cyrille Ngonga
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Classifying nodes in knowledge graphs is an important task, e.g., for predicting missing types of entities, predicting which molecules cause cancer, or predicting which drugs are promising treatment candidates. While black-box models often achieve high predictive performance, they are only post-hoc and locally explainable and do not allow the learned model to be easily enriched with domain knowledge. Towards this end, learning description logic concepts from positive and negative examples has been proposed. However, learning such concepts often takes a long time and state-of-the-art approaches provide limited support for literal data values, although they are crucial for many applications. In this paper, we propose EvoLearner - an evolutionary approach to learn concepts in ALCQ(D), which is the attributive language with complement (ALC) paired with qualified cardinality restrictions (Q) and data properties (D). We contribute a novel initialization method for the initial population: starting from positive examples, we perform biased random walks and translate them to description logic concepts. Moreover, we improve support for data properties by maximizing information gain when deciding where to split the data. We show that our approach significantly outperforms the state of the art on the benchmarking framework SML-Bench for structured machine learning. Our ablation study confirms that this is due to our novel initialization method and support for data properties.
description: Accepted at WWW 2022
Impfen von Wolken zur Erhöhung der Reflektivität – Konzepte, Potenziale und Risiken
Creators: name: Possner, Anna
name: Quaas, Johhanes
name: Quante, Markus
Publisher: name: Universität Hamburg
Year: 2023
Subjects: Seeding of cloud, increase reflectivity, brightening of low clouds, solar radiation management,reflectivity of suitable clouds,with additional condensation nuclei, marine stratocumulus clouds.

description: Seeding of clouds to increase reflectivity - Concepts, potentials and risks: The systematic brightening of low clouds as a measure of solar radiation management against proceeding global warming has been under discussion since the early 1990s. In principle, the reflectivity of suitable clouds could be increased by seeding them with additional condensation nuclei. The most suitable clouds are likely marine stratocumulus clouds. A corresponding effect was observed in ship tracks. Available model studies on the effectiveness and side effects of cloud brightening do not yet show clear results. Questions regarding the areas of application, the technolo­gical implementation, and the risks are still unresolved.
Assessing transfer entropy from biochemical data
Creators: name: Imaizumi, Takuya
name: Umeki, Nobuhisa
name: Yoshizawa, Ryo
name: Obuchi, Tomoyuki
name: Sako, Yasushi
name: Kabashima, Yoshiyuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We address the problem of evaluating the transfer entropy (TE) produced by biochemical reactions from experimentally measured data. Although these reactions are generally non-linear and non-stationary processes making it challenging to achieve accurate modeling, Gaussian approximation can facilitate the TE assessment only by estimating covariance matrices using multiple data obtained from simultaneously measured time series representing the activation levels of biomolecules such as proteins. Nevertheless, the non-stationary nature of biochemical signals makes it difficult to theoretically assess the sampling distributions of TE, which are necessary for evaluating the statistical confidence and significance of the data-driven estimates. We resolve this difficulty by computationally assessing the sampling distributions using techniques from computational statistics. The computational methods are tested by using them in analyzing data generated from a theoretically tractable time-varying signal model, which leads to the development of a method to screen only statistically significant estimates. The usefulness of the developed method is examined by applying it to real biological data experimentally measured from the ERBB-RAS-MAPK system that superintends diverse cell fate decisions. A comparison between cells containing wild-type and mutant proteins exhibits a distinct difference in the time evolution of TE while apparent difference is hardly found in average profiles of the raw signals. Such comparison may help in unveiling important pathways of biochemical reactions.
description: 30 pages, 11 figures
title: Тенденции развития туризма в регионах, принимавших чемпионат мира по футболу 2018 года
title: Trends in tourism development in regions hosting the 2018 FIFA World Cup
Creators: name: Плетнёв, Дмитрий Александрович
name: Силова, Елена Сергеевна
name: Сейфи, Анахита
Publisher: name: Издательский центр СурГУ
Year: 2020

description: Цель исследования – оценить влияние подготовки и проведения крупных спортивных мероприятий (на примере чемпионата мира по футболу 2018 г.) на экономику регионов. Актуальность темы обусловлена необходимостью развития внутреннего туризма в России для диверсификации структуры экономики, а также необходимостью анализа влияния крупных спортивных событий на региональные экономики и на изменение туристских потоков в регионах. В работе сделан акцент на анализе количественных показателей, таких как валовой региональный продукт, инвестиции в основной капитал, туристские потоки, финансовые показатели обслуживающих секторов (ресторанов, гостиниц). Использованы методы статистического анализа, данные из открытых статистических источников. В результате установлено, что влияние крупных спортивных мероприятий на региональные экономики ограничено и в краткосрочном периоде не ведет к устойчивому росту исследуемых показателей. Выявлены отличия в динамике показателей регионов столичного типа и периферийных регионов: в последних отслеживается тенденция к более быстрому приросту туристских потоков, даже несмотря на более низкие инвестиции в туристскую инфраструктуру. Также установлено, что регионы практически не использовали статус хозяев чемпионата мира по футболу для привлечения дополнительных источников инвестиций.
description: The purpose of the article is to assess the impact on the regional economics of major sports events such as the 2018 FIFA World Cup. The relevance of the work is due to the need for the development of domestic tourism in Russia to diversify the structure of the economy and the analysis of the impact of major sports events on regional economics and on changes in tourist flows in the regions. The work focuses on the analysis of quantitative indicators, such as gross regional product, investments in fixed assets, tourist flows, financial indicators of service facilities (restaurants, hotels). The data from open statistical sources and methods of statistical analysis are used in the research. As a result, the authors found that the impact of the major sports events on regional economics is limited and in the short term does not lead to a steady increase in the studied indicators. The differences in the dynamics of regional indicators of the capital and provincial regions are revealed. The provincial regions demonstrate the trend towards faster growth of tourist flows, despite lower investments in tourist infrastructure. It is also established that the regions did not use the FIFA World Cup host status to attract additional sources of investment.
Anomalous Diffusion: Fractional Brownian Motion vs. Fractional Ito Motion
Creators: name: Eliazar, Iddo
name: Kachman, Tal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Generalizing Brownian motion (BM), fractional Brownian motion (FBM) is a paradigmatic selfsimilar model for anomalous diffusion. Specifically, varying its Hurst exponent, FBM spans: sub-diffusion, regular diffusion, and super-diffusion. As BM, also FBM is a symmetric and Gaussian process, with a continuous trajectory, and with a stationary velocity. In contrast to BM, FBM is neither a Markov process nor a martingale, and its velocity is correlated. Based on a recent study of selfsimilar Ito diffusions, we explore an alternative selfsimilar model for anomalous diffusion: fractional Ito motion (FIM). The FIM model exhibits the same Hurst-exponent behavior as FBM, and it is also a symmetric process with a continuous trajectory. In sharp contrast to FBM, we show that FIM: is not a Gaussian process; is a Markov process; is a martingale; and its velocity is not stationary and is not correlated. On the one hand, FBM is hard to simulate, its analytic tractability is limited, and it generates only a Gaussian dissipation pattern. On the other hand, FIM is easy to simulate, it is analytically tractable, and it generates non-Gaussian dissipation patterns. Moreover, we show that FIM has an intimate linkage to diffusion in a logarithmic potential. With its compelling properties, FIM offers researchers and practitioners a highly workable analytic model for anomalous diffusion.
STRATIGRAPHY AND QUALITY ASSESSMENT OF COAL AT ACHIBO DEPARTMENT OF GEOLOGY COLLEGE OF i ACHIBO-SOMBO AREA, SOUTH WESTERN ETHIOPIA
Creators: name: DIRIBA YADATA AYANSA
Publisher: name: Zenodo
Year: 2020

description: Achibo-Sombo which is known for its extensive coal deposits is situated in Oromia

regional state, South-Western Ethiopian. The present study was focused to analyses

the coal bearing sedimentary rock, lithostratigraphy, and quality of coal seam deposit

in the Achibo-Sombo Area. The stratigraphy of the area was investigated by

integrating borehole data and separating the area section wise based on field survey.

The area is characterized by variable lithostratigraphic units: Basement complex,

Lower Basalt, Coal bearing sedimentary rock (i.e.., interbedded mudstone and

sandstone layers comprising plant fossils with laminated carbonaceous shale, shale,

oil shale, and coaly shale) and Upper Basalt to the latest. The presence of Sandstone,

Mudstone, Coal Beds and Plant fossils bear fluviatile deposits where as the

intercalated various shale layers envisage the lacustrine environment. For this study,

fifteen (15) representative samples were taken separately with respect to their seam

thickness. Accordingly, coal seam thickness from outcrop ranges (0.45 to 4.8m) and

(2.5 to 8.37m) from borehole data and the overall coal seam ranges from (0.45 to

8.37m). The quality of coal at Achibo Sombo was analyzed by Adiabatic Calorie

Metter, Gravimetric and Proximate techniques.
Power corrections to the CP-violation parameter $\varepsilon_K$
Creators: name: Ciuchini, M.
name: Franco, E.
name: Lubicz, V.
name: Martinelli, G.
name: Silvestrini, L.
name: Tarantino, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the calculation of the short-distance power corrections to the CP-violation parameter $\varepsilon_K$ coming from dimension-8 operators in the $ΔS=2$ effective Hamiltonian. A first estimate of this contribution, obtained for large-$N_c$ and in the chiral limit, was provided in ref. [arXiv:hep-ph/0406094]. Here we evaluate and include the $\mathcal{O}(m_K^2/m_c^2)$ and $\mathcal{O}(Λ_{QCD}^2/m_c^2)$ contributions that, a priori, could induce $\mathcal{O}(1)$ corrections to previous estimates, as $m_K$ is numerically of order $Λ_{QCD}$. Our computation shows that there are several dimension-8 operators besides the one considered before. Their effect on $\varepsilon_K$, however, accidentally cancels out to a large extent, leaving the final correction at the level of 1%.
description: 23 pages, 2 figures. v2: added references and CKM parameter values. v3: matches published version
Resistively-detected NMR lineshapes in a local filling $ν< 1$ quantum Hall breakdown
Creators: name: Fauzi, M. H.
name: Sobue, T.
name: Noorhidayati, A.
name: Sato, K.
name: Hashimoto, K.
name: Hirayama, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Resistively-detected NMR (RDNMR) is a unique characterization method enabling highly-sensitive NMR detection for a single quantum nanostructure, such as a quantum point contact (QPC). In many studies, we use dynamic nuclear polarization and RDNMR detection in a quantum Hall breakdown regime of a local QPC filling factor of 1 ($ν_{\rm{qpc}} = 1$). However, the lineshapes of RDNMR signal are proved to be complicated and still not fully understood yet. Here, we systematically polarize the nuclear spins by current-pumping from the close vicinity of $ν_{\rm{qpc}} = 1$ conductance plateau all the way down to pinch-off point, providing a clear evidence that the spin-flip scattering between two edge channels at the lowest Landau level still occurs in the constriction even when it is close to the pinch off point ($G \approx 10^{-2}$ $2e^{2}/h$). The collected RDNMR spectra reveal two sets of distinguished features. First, in a strong to intermediate tunneling regime, we observe an ordinary resistance dip lineshape but interestingly its transition frequency follows a snake-like pattern, an indicative of spatial modulation of electron density in the QPC. Second, in a weak tunneling regime, the spectrum turns into a dispersive lineshape which we interpret due to the build up of two sets of nuclear spin polarization that are in contact with different electron spin polarization.
description: An invited article to celebrate the 60th anniversary year of the physica status solidi family
Woodrow Wilson’s Fourteen Points 100 years on: Rethinking the liberal world order
Creators: name: Kortunov, Andrey
name: Troitskaya, Olga
name: Shakirov, Oleg
name: Portanskiy, Alexey
name: Gudev, Pavel
name: Arbatov, Alexey
name: Utkin, Sergey
name: Timofeev, Ivan
name: Demidov, Oleg
Publisher: name: Доклады ЦСР
Year: 2018

description: On January 8, 1918, President Woodrow Wilson presented to Congress his now famous Fourteen Points — a draft peace plan that was supposed to put an end to the First World War and prevent future conflicts. A century later, we are attempting to rethink these principles through the prism of the fundamental changes taking place in the world today. In this report, authors look at how the Fourteen Points stood the test of time and how they can be applied today.