cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CENÁRIOS MUSICAIS DO ROMANCE TRISTE FIM DE POLICARPO QUARESMA, DE LIMA BARRETO: um estudo sobre a produção musical no Rio de Janeiro entre 1891 e 1894. Belo Horizonte 2021
Creators: name: Moura, Robert
Publisher: name: Zenodo
Year: 2020
Subjects: Lima Barreto
música no Rio de Janeiro no século XIX
music in Rio de Janeiro in the 19th century

description: Com o intuito de construir os possíveis cenários musicais do livro Triste fim de Policarpo Quaresma, de Lima Barreto, o presente trabalho é o resultado de uma pesquisa sobre a produção musical da cidade do Rio de Janeiro no final do século XIX, com um foco entre os anos 1891 e 1894, nos quais se passam o romance. Foi realizada uma pesquisa bibliográfica e documental procurando identificar músicos em atividade nesse período, os gêneros musicais em voga, bem como os espaços nos quais a música era produzida. Contextos sociais, geográficos e econômicos aparecem na composição desses quadros que também abordam o ensino musical, programação de teatros e o mercado editorial musical. Identificamos, ainda, a presença do violão e do piano como instrumentos protagonistas da atividade musical de então, mas em níveis de respeitabilidade social bastante distinta. O material encontrado foi comparado às cenas do romance que envolvem a prática musical, e a personagem Ricardo Coração dos Outros, cantor, violonista e compositor de modinhas é nosso principal guia por esses ambientes musicais que exploramos a fim de pintar esses cenários. In order to build the possible musical scenarios of the book Triste fim de Policarpo Quaresma, by Lima Barreto, the present work is the result of a research on the musical production of the city of Rio de Janeiro in the late nineteenth century, with a focus on the years 1891 and 1894, in which the novel takes place. A bibliographical and documentary research was carried out, trying to identify musicians active in that period, the musical genres in vogue, as well as the spaces in which the music was produced. Social, geographic and economic contexts appear in the composition of these tables, which also address music education, theater programming and the music publishing market. We also identified the presence of the guitar and piano as protagonists of musical activity at the time, but at very different levels of social respectability. The material found was compared to scenes from the novel that involve musical practice, and the character Ricardo Coração dos Outros, singer, guitarist and songwriter, is our main guide through these musical environments that we explore in order to paint these scenarios.
A study of extreme water waves using a hierarchy of models based on potential flow theory
Creators: name: Choi, Junho
Publisher: name: Zenodo
Year: 2024

description: # User instructions

Program that solves the Potential Flow Equations (PFE) on a 3D periodic domain using the modified mid-point scheme.

The simulation tracks the evolution of three line solitons as they interact, to produce an eight times higher splash than the initial height of each soliton.

## FILES

The code consists of five files:- `pot_sp3.py` is the main file that solves PFE;- `PFE_sp3energy.py`, `PFE_sp3_max.py`, `PFE_sp3_A.py`, and `PFE_sp3_maxA.py` are used for plotting the evolution of energy and maximum, amplitude of solitons in a far field (denoted by A), and maximum divided by A, respectively.

After the computation of `pot_sp3.py` is finished, four sets of data are produced:- solutions eta and Phi in "*data/height.pvd*", "*data/psi.pvd*", "*data/varphi.pvd*";- evolution of energy and maximum against time is saved in "*data/potflow3dperenergy.txt";

The computational data can be visualised as follows:- Solutions eta and Phi are pvd files that can be read with Paraview.- Time evolution of energy can be plotted by running file `PFE_sp3_energy.py`.- Time evolution of maximum of eta can be plotted by running file `PFE_sp3_max.py`.- Time evolution of A can be plotted by running file `PFE_sp3_A.py`.- Time evolution of maximum/A can be plotted by running file `PFE_sp3_maxA.py`.

We provide a table in which parameters were uses for setting simulations as follows. We denote spatial resolution by $\Delta x\approx\Delta y=200$. $T$ is the total simulation time defined as $T=t_{end}-t_{0}$ with $t_0=0{\rm s}$. $\Delta t=0.7139{\rm s}$ or $\Delta t BLE=0.005$.  In order to change order of basis, modify nCG (currently setting nCG=2). For $N_y$, modify multiple (currently setting mutiple=3), for $\Delta t BLE$ modify dtBLE(currently setting dtBLE=1/200).  All simuations were run on 40 cores of Leeds' arc4-HPC. 

Simulation
epsilon
delta
L_x (m)
L_y (m)
L_z (m)
 T (s)
\Delta t BLE
N_x
N_y
N_z

PFE-SP3-CG2- $\frac{\Delta y}{3}$- $\Delta t$
0.01
10^-5
17725.6
40000
20
6855
0.005
226
600
4

PFE-SP3-CG4- $\frac{2\Delta y}{3}$- $\Delta t$
0.01
10^-5
17725.6
40000
20
6855
0.005
133
300
4

PFE-SP3-CG2- $\frac{\Delta y}{4}$- $\Delta t$
0.01
10^-5
17725.6
40000
20
6855
0.005
355
800
4

PFE-SP3-CG2- $\frac{\Delta y}{3}$- $\Delta t/2$
0.01
10^-5
17725.6
40000
20
6855
0.0025
226
600
4
A vertex-structure model for new direct CP-violating effects in Bbar^0(B^0) -> phi K_S and in B^-+ -> pi^-+ eta' (eta)
Creators: name: Barshay, Saul
name: Kreyerhoff, Georg
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider effective Lagrangian models of CP-violating vertex structure in which a $b -> uW$ vertex, proportional to $s_{13}e^{-iδ_{13}}$ with $s_{13}$ very small (milliweak interaction) and $δ_{13}$ large, is dynamically generated. A consequent, enhanced CP-violating vertex for $b\to sg$ results in an enhanced CP-violating phase in the ratio of amplitudes for $\bbar \to ϕ\KS$. We estimate that this can significantly change the $S$ parameter from the value expected in the standard model.
description: 12 pages including 3 figures
Triple ionization and "frustrated" triple ionization in triatomic molecules driven by intense laser fields
Creators: name: Peters, M. B.
name: Majety, V. P.
name: Emmanouilidou, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We formulate a three-dimensional semi-classical model to treat three-electron escape dynamics in a strongly-driven linear triatomic molecule, HeH$_{2}^{+}$. Our model includes the Coulomb singularities. Hence, to avoid unphysical autoionization, we employ two criteria to switch off the Coulomb repulsive force between two bound electrons and switch it on when the motion of one electron is mostly determined by the laser field. We investigate triple and "frustrated" triple ionization. In the latter process two electrons escape while one electron remains bound in a Rydberg state. We find that two pathways prevail in "frustrated" triple ionization, as in "frustrated" double ionization. We also find that the electron that remains in a Rydberg state is more likely to be attached to He$^{2+}$ compared to H$^{+}$. Our results indicate that in triple and "frustrated" triple ionization electronic correlation is weak. Moreover, we compute the sum of the kinetic energies as well as the angular patterns of the final ion fragments in triple and "frustrated" triple ionization. These patterns suggest that the fragmenting molecule deviates from its initial linear configuration.
description: 7 pages, 4 figures
Universal Nucleation Behaviour of Sheared Systems
Creators: name: Goswami, Amrita
name: Dalal, Indranil Saha
name: Singh, Jayant K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Using molecular simulations and a modified Classical Nucleation Theory, we study the nucleation, under flow, of a variety of liquids: different water models, Lennard-Jones and hard sphere colloids. Our approach enables us to analyze a wide range of shear rates inaccessible to brute-force simulations. Our results reveal that the variation of the nucleation rate with shear is universal. A simplified version of the theory successfully captures the non-monotonic temperature dependence of the nucleation behavior, which is shown to originate from the violation of the Stokes-Einstein relation.
description: 16 pages, 7 figures
Polarization Requirements for Ensemble Implementations of Quantum Algorithms with a Single Bit Output
Creators: name: Anderson, Brandon M.
name: Collins, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compare the failure probabilities of ensemble implementations of quantum algorithms which use pseudo-pure initial states, quantified by their polarization, to those of competing classical probabilistic algorithms. Specifically we consider a class algorithms which require only one bit to output the solution to problems. For large ensemble sizes, we present a general scheme to determine a critical polarization beneath which the quantum algorithm fails with greater probability than its classical competitor. We apply this to the Deutsch-Jozsa algorithm and show that the critical polarization is 86.6%.
description: 11 pages, 3 figures
Constraints on the abundance of $0.01\,c$ stellar engines in the Milky Way
Creators: name: Lingam, Manasvi
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2020
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar engines are hypothesized megastructures that extract energy from the host star, typically with the purpose of generating thrust and accelerating the stellar system. We explore the maximum potential speeds that could be realizable by stellar engines, and determine that speeds up to $\sim 0.1\,c$ might perhaps be attainable under optimal conditions. In contrast, natural astrophysical phenomena in the Milky Way are very unlikely to produce such speeds. Hence, astrometric surveys of hypervelocity stars may be utilized to conduct commensal searches for high-speed stellar engines in the Milky Way. It may be possible to derive bounds on their abundance, but this requires certain assumptions regarding the spatiotemporal distribution of such engines, which are not guaranteed to be valid.
description: Accepted for publication in The Astrophysical Journal; 9 pages; 0 figures
Müller, Gerhard (Hrsg.), Theologische Realenzyklopädie (TRE)
Creators: name: Krüger, Hanfried
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 3 (1988): Ökumenische Rundschau, Band 37, Heft 3
Technology implementation and integration from the experience of Tessi science teachers : towards a conceptual and practical framework for understanding and implementing technology integration
Creators: name: Shim, Johnny Chun Lin
Publisher: name: University of British Columbia
Year: 2009

description: There is a quiet technological revolution occurring in education today. Technology has helped catalyze new forms of teaching and learning. As technology is infused into the existing educational culture, there is a realization that the nature of technology integration into education consists of complex change processes. This qualitative multi-case study examines what teachers perceive as the issues in technology integration and the negotiation by teachers through these issues. This study reveals the experiences and perspectives of Physics, Chemistry, and Biology teachers at different stages of technology integration in the Technology Enhanced Secondary Science Instruction (TESSI) project, a longitudinal, collaborative, field-based research and development program of technology integration into government-mandated secondary school science courses. The progression of conceptual and practical issues in technology integration, and the interplay among these issues in relation to teachers, students, curriculum and the supporting infrastructure are analyzed. Conceptions of pedagogy and praxis, multiple change processes, student learning strategies and outcomes emerging from this study are synthesized to generate a general framework for innovative technology integration and to inform the research and development of the Technology Enhanced Instruction (TEI) model of technology integration.
Universal behavior of mass gaps existing in the single heavy baryon family
Creators: name: Chen, Bing
name: Luo, Si-Qiang
name: Liu, Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mass gaps existing in the discovered single heavy flavor baryons are analyzed, which show some universal behaviors. Under the framework of a constituent quark model, we quantitatively explain why such interesting phenomenon happens, when these established excited heavy baryons are regarded as the $λ$-mode excitations. Based on the universal behaviors of the discussed mass gaps, we may have three implications including the prediction of the masses of excited $Ξ_b^0$ baryons which are still missing in the experiment. For completeness, we also discuss the mass gaps of these $ρ$-mode excited single heavy flavor baryons.
description: 11 pages, 7 tables and 1 figure
Ideare, progettare, realizzare. L'organizzazione del progetto scientifico nelle aree umanistiche
Creators: name: Cazzato, Elisa
Publisher: name: Zenodo
Year: 2023

description: Comitato organizzatore: Giancarlo Alfano, GiuliaBonazza, Alessandro Buono, Diego Carnevale, Elisa Cazzato, Domenico Cecere, Paolo Conte, Francesco Dendena, Cinzia Recca, Felicita Tramontana
Modular transformations of elliptic Feynman integrals
Creators: name: Weinzierl, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the behaviour of elliptic Feynman integrals under modular transformations. This has a practical motivation: Through a suitable modular transformation we can achieve that the nome squared is a small quantity, leading to fast numerical evaluations. Contrary to the case of multiple polylogarithms, where it is sufficient to consider just variable transformations for the numerical evaluations of multiple polylogarithms, it is more natural in the elliptic case to consider a combination of a variable transformation (i.e. a modular transformation) together with a redefinition of the master integrals. Thus we combine a coordinate transformation on the base manifold with a basis transformation in the fibre. Only in the combination of the two transformations we stay within the same class of functions.
description: 29 pages, v2: version to be published
Universal scaling of work statistics for quantum quenches
Creators: name: Fei, Zhaoyu
name: Sun, C. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we systematically study the work statistics for quantum phase transition. For a quantum system approached by an anisotropic conformal field theory near the critical point, the driving protocols is divided into three different regimes for different quench rates, which reflects the competition between the frozen time and the quench time scale. In each regime, we find universal scaling behaviors in work statistics (after renormalization). It is shown that the critical exponents are determined by the space-time dimension $d$, the dynamical critical exponent $z$, the correlation-length exponent $ν$, and the power-law protocols. These universal scalings in nonequilibrium process may be found in quantum phase transition by measuring the Loschmidt echo or the Ramsey interferometry.
On Polytopes and Generalizations of the KLT Relations
Creators: name: Kalyanapuram, Nikhil
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We combine the technology of the theory of polytopes and twisted intersection theory to derive a large class of double copy relations that generalize the classical relations due to Kawai, Lewellen and Tye (KLT) . To do this, we first study a generalization of the scattering equations of Cachazo, He and Yuan. While the scattering equations were defined on $\mathcal{M}_{0,n}$ - the moduli space of marked Riemann spheres - the new scattering equations are defined on polytopes known as accordiohedra, realized as hyperplane arrangements. These polytopes encode as patterns of intersection the scattering amplitudes of generic scalar theories. The twisted period relations of such intersection numbers provide a vast generalization of the KLT relations. Differential forms dual to the bounded chambers of the hyperplane arrangements furnish a natural generalization of the Bern-Carrasco-Johansson (BCJ) basis, the number of which can be determined by counting the number of solutions of the generalized scattering equations. In this work the focus is on a generalization of the BCJ expansion to generic scalar theories, although we use the labels KLT and BCJ interchangeably.
description: v2: Fixed typos, to appear in JHEP
Spin three gauge theory revisited
Creators: name: Bekaert, Xavier
name: Boulanger, Nicolas
name: Cnockaert, Sandrine
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the problem of consistent interactions for spin-3 gauge fields in flat spacetime of arbitrary dimension n>3. Under the sole assumptions of Poincaré and parity invariance, local and perturbative deformation of the free theory, we determine all nontrivial consistent deformations of the abelian gauge algebra and classify the corresponding deformations of the quadratic action, at first order in the deformation parameter. We prove that all such vertices are cubic, contain a total of either three or five derivatives and are uniquely characterized by a rank-three constant tensor (an internal algebra structure constant). The covariant cubic vertex containing three derivatives is the vertex discovered by Berends, Burgers and van Dam, which however leads to inconsistencies at second order in the deformation parameter. In dimensions n>4 and for a completely antisymmetric structure constant tensor, another covariant cubic vertex exists, which contains five derivatives and passes the consistency test where the previous vertex failed.
description: LaTeX, 37 pages. References and comments added. Published version
Best, Thomas F. (Hrsg.), Gemeinsam auf dem Weg zur sichtbaren Einheit
Creators: name: Vo
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 3 (1988): Ökumenische Rundschau, Band 37, Heft 3
On the separation principle of quantum control
Creators: name: Bouten, Luc
name: van Handel, Ramon
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is well known that quantum continuous observations and nonlinear filtering can be developed within the framework of the quantum stochastic calculus of Hudson-Parthasarathy. The addition of real-time feedback control has been discussed by many authors, but the foundations of the theory still appear to be relatively undeveloped. Here we introduce the notion of a controlled quantum flow, where feedback is taken into account by allowing the coefficients of the quantum stochastic differential equation to be adapted processes in the observation algebra. We then prove a separation theorem for quantum control: the admissible control that minimizes a given cost function is a memoryless function of the filter, provided that the associated Bellman equation has a sufficiently regular solution. Along the way we obtain results on existence and uniqueness of the solutions of controlled quantum filtering equations and on the innovations problem in the quantum setting.
description: 24 pages; see also math-ph/0508006. An extended version of this paper is in preparation
FROST: a momentum-conserving CUDA implementation of a hierarchical fourth-order forward symplectic integrator
Creators: name: Rantala, Antti
name: Naab, Thorsten
name: Springel, Volker
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a novel hierarchical formulation of the fourth-order forward symplectic integrator and its numerical implementation in the GPU-accelerated direct-summation N-body code FROST. The new integrator is especially suitable for simulations with a large dynamical range due to its hierarchical nature. The strictly positive integrator sub-steps in a fourth-order symplectic integrator are made possible by computing an additional gradient term in addition to the Newtonian accelerations. All force calculations and kick operations are synchronous so the integration algorithm is manifestly momentum-conserving. We also employ a time-step symmetrisation procedure to approximately restore the time-reversibility with adaptive individual time-steps. We demonstrate in a series of binary, few-body and million-body simulations that FROST conserves energy to a level of $|ΔE / E| \sim 10^{-10}$ while errors in linear and angular momentum are practically negligible. For typical star cluster simulations, we find that FROST scales well up to $N_\mathrm{GPU}^\mathrm{max}\sim 4\times N/10^5$ GPUs, making direct summation N-body simulations beyond $N=10^6$ particles possible on systems with several hundred and more GPUs. Due to the nature of hierarchical integration the inclusion of a Kepler solver or a regularised integrator with post-Newtonian corrections for close encounters and binaries in the code is straightforward.
description: 18 pages, 7 figures. Accepted for publication in MNRAS
Groundwater defluoridation
Creators: name: Geleta, Wondwosen Sime
Publisher: name: Universität Rostock
Year: 2023
Subjects: subject: 620 Engineering & allied operations
subject: 660 Chemical engineering

description: This study addresses high fluoride levels (>1.5 mg/L) in drinking water using volcanic rock materials in column systems. Characterization techniques informed adsorption mechanisms. VPum removed110 mg/kg, VSco 22 mg/kg. Zirconium-coated adsorbents, Zr – Pu (225 mg/kg) and ZrOCSc (58 mg/kg), enhance fluoride adsorption. Models predicted upscaling without the need for more experiments. Volcanic rocks, natural or modified, can efficiently remove fluoride in fixed-bed adsorption columns. Research on competing ions and adsorbent regeneration is crucial for sustainable groundwater defluoridation.
Quantum algorithm of a set of quantum 2-sat problem
Creators: name: Hu, Yanglin
name: Zhang, Zhelun
name: Wu, Biao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a quantum adiabatic algorithm for a set of quantum 2-satisfiability (Q2SAT) problem, which is a generalization of 2-satisfiability (2SAT) problem. For a Q2SAT problem, we construct the Hamiltonian which is similar to that of a Heisenberg chain. All the solutions of the given Q2SAT problem span the subspace of the degenerate ground states. The Hamiltonian is adiabatically evolved so that the system stays in the degenerate subspace. Our numerical results suggest that the time complexity of our algorithm is $O(n^{3.9})$ for yielding non-trivial solutions for problems with the number of clauses $m=dn(n-1)/2\ (d\lesssim 0.1)$. We discuss the advantages of our algorithm over the known quantum and classical algorithms.
Improvement of Sander lucioperca (L., 1758) aquaculture during early life cycle stages in Recirculating Aquaculture Systems (RAS)
Creators: name: Ballesteros Redondo, Laura
Publisher: name: Universität Rostock
Year: 2023
Subjects: subject: 570 Life science
subject: 590 Zoological sciences

description: This thesis aims to improve the feeding protocol for pikeperch larvae studying the effect of rotifers, copepod, micro Artemia, Artemia sp., and microdiets on pikeperch. Improvement in survival and growth rates during the initial life stage was achieved with rotifers. Apocyclops panamensis resulted in increased growth rates after rotifers. Pikeperch fatty acids served as a quality indicator. Live feed must provide linoleic acid during the first 7 days and docosahexaenoic acid from day 11 post hatch. This thesis established a balanced lipid phenotype for pikeperch larvae and juveniles in RAS.
Effective equation of state for dark energy: mimicking quintessence and phantom energy through a variable Lambda
Creators: name: Sola, Joan
name: Stefancic, Hrvoje
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While there is mounting evidence in all fronts of experimental cosmology for a non-vanishing dark energy component in the Universe, we are still far away from understanding its ultimate nature. A fundamental cosmological constant, Lambda, is the most natural candidate, but many dynamical mechanisms to generate an effective Lambda have been devised which postulate the existence of a peculiar scalar field (so-called quintessence, and generalizations thereof). These models are essentially ad hoc, but they lead to the attractive possibility of a time-evolving dark energy with a non-trivial equation of state (EOS). Most, if not all, future experimental studies on precision cosmology (e.g. the SNAP and PLANCK projects) address very carefully the determination of an EOS parametrized ``a la quintessence''. Here we show that by fitting cosmological data to an EOS of that kind can also be interpreted as a hint of a fundamental, but time-evolving, cosmological term: Lambda=Lambda(t). We exemplify this possibility by studying the effective EOS associated to a renormalization group (RG) model for Lambda. We find that the effective EOS can correspond to both normal quintessence and phantom dark energy, depending on the value of a single parameter of the RG model. We conclude that behind a non-trivial EOS of a purported quintessence or phantom scalar field there can actually be a running cosmological term of a fundamental quantum field theory.
description: LaTeX, 15 pages, 3 figures. Extended discussion and references added. Version accepted in Physics Letters B
Schumacher, Gerhard, Evangelisch - katholisch in Frage und Antwort
Creators: name: Klein, Laurentius
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 3 (1988): Ökumenische Rundschau, Band 37, Heft 3
The Independence of Research—A Review of Disciplinary Perspectives and Outline of Interdisciplinary Prospects
Creators: name: Gläser, Jochen
name: Ash, Mitchell
name: Buenstorf, Guido
name: Hopf, David
name: Hubenschmid, Lara
name: Janßen, Melike
name: Laudel, Grit
name: Schimank, Uwe
name: Stoll, Marlene
name: Wilholt, Torsten
name: Zechlin, Lothar
name: Lieb, Klaus
Publisher: name: Dordrecht [u.a.] : Springer Science + Business Media B.V
Year: 2021
Subjects: subject: Academy-industry collaboration
subject: Autonomy
subject: Competition
subject: Conflict of interest
subject: Epistemic independence
subject: Freedom of science
subject: Science in dictatorships
subject: Social epistemology
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: The independence of research is a key strategic issue of modern societies. Dealing with it appropriately poses legal, economic, political, social and cultural problems for society, which have been studied by the corresponding disciplines and are increasingly the subject of reflexive discourses of scientific communities. Unfortunately, problems of independence are usually framed in disciplinary contexts without due consideration of other perspectives’ relevance or possible contributions. To overcome these limitations, we review disciplinary perspectives and findings on the independence of research and identify interdisciplinary prospects that could inform a research programme.
Radiative Breaking Scenario for the GUT gauge symmetry
Creators: name: Fukuyama, Takeshi
name: Kikuchi, Tatsuru
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The origin of the GUT scale from the top down perspective is explored. The GUT gauge symmetry is broken by the renormalization group effects, which is an extension of the radiative electroweak symmetry breaking scenario to the GUT models. That is, in the same way as the origin of the electroweak scale, the GUT scale is generated from the Planck scale through the radiative corrections to the soft SUSY breaking mass parameters. This mechanism is applied to a perturbative SO(10) GUT model, recently proposed by us. In the SO(10) model, the relation between the GUT scale and the Planck scale can naturally be realized by using order one coupling constants.
description: 5 pages, no figure, final version to be published in Eur. Phys. J. C
Floaties and sinkies, flinkers and Archimedes thinkers : embodied writing in grade eight science class
Creators: name: Harding, Thomas
Publisher: name: University of British Columbia
Year: 2009

description: This study has emerged from concerns expressed by science students, educators, and researchers, and from my own teaching experience, that writing in school science often remains disconnected from students' experience, and rarely stimulates further learning. The purpose of this study is to explore the potential of open, expressive writing tasks to illustrate students' understanding of the phenomena of floating and sinking. A specially selected series of seven explorations in physical properties of matter provide a rich context for Grade Eight students and I, their teacher, to experience and explore this topic. The interconnections between lab explorations and writing in school science, and the interactions in a classroom fostering science inquiry, are central to this study. A classroom-based story is unraveled from an enactivist perspective. My analysis of students' writing tasks and reflections on learning illuminates possibilities for encouraging personal connections and embodied writing in science class. Students' insights into learning about science and about themselves through expressive ways of writing shape this story.
Eigenmode frequency distribution of rapidly rotating neutron stars
Creators: name: Boutloukos, Stratos
name: Nollert, Hans-Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use perturbation theory and the relativistic Cowling approximation to numerically compute characteristic oscillation modes of rapidly rotating relativistic stars which consist of a perfect fluid obeying a polytropic equation of state. We present a code that allows the computation of modes of arbitrary order. We focus here on the overall distribution of frequencies. As expected, we find an infinite pressure mode spectrum extending to infinite frequency. In addition we obtain an infinite number of inertial mode solutions confined to a finite, well-defined frequency range which depends on the compactness and the rotation frequency of the star. For non-axisymmetric modes we observe how this range is shifted with respect to the axisymmetric ones, moving towards negative frequencies and thus making all m>2 modes unstable. We discuss whether our results indicate that the star's spectrum must have a continuous part, as opposed to simply containing an infinite number of discrete modes.
description: 10 pages, 6 figures, added references, improved wording, published in Physical Review D
Influence of pitting corrosion on the fatigue strength of offshore steel structures based on 3D surface scans
Creators: name: Shojai, Sulaiman
name: Schaumann, Peter
name: Braun, Moritz
name: Ehlers, Sören
Publisher: name: Oxford : Elsevier
Year: 2022
Subjects: subject: 3D-Surface scan
subject: Corrosion fatigue
subject: Offshore-wind
subject: Pitting corrosion
subject: Reverse engineering
subject: Stress concentrations
subject: Dewey Decimal Classification::600 | Technik

description: Support structures for offshore wind turbines and the corresponding transformer platforms are highly susceptible to corrosion. In particular, the phenomenon of pitting is crucial, as it leads to local stress concentrations and thus affects the fatigue life of structures. Despite corrosion protection systems, corrosion cannot be completely avoided, which can lead to pitting corrosion on the steel surface. This leads to fatigue life reduction, since the structures are exposed to high dynamic loads. Local stress concentrations can be considered in local concepts but so far, corrosion effects in local concepts are insufficiently defined. Hence, this paper aims to investigate the impact of pitting corrosion and the corresponding stress concentration on the fatigue life endurance of structural steel, used for offshore wind support structures. For this purpose, a total of 36 pre-corroded specimens with pitting were tested against fatigue failure and monitored with Digital Image Correlation. In addition, the specimens were scanned with a high-resolution 3D scanner and converted to numerical models by reverse engineering, to determine the stress concentrations on the surface. In most cases the hotspots from the numerical model coincide with the crack location detected with Digital Image Correlation. The notch effect has a significant impact on the crack location and crack path.
Inflaton Effective Potential from Photons for General $ε$
Creators: name: Katuwal, S.
name: Miao, S. P.
name: Woodard, R. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We accurately approximate the contribution that photons make to the effective potential of a charged inflaton for inflationary geometries with an arbitrary first slow roll parameter $ε$. We find a small, nonlocal contribution and a numerically larger, local part. The local part involves first and second derivatives of $ε$, coming exclusively from the constrained part of the electromagnetic field which carries the long range interaction. This causes the effective potential induced by electromagnetism to respond more strongly to geometrical evolution than for either scalars, which have no derivatives, or spin one half particles, which have only one derivative. For $ε= 0$ our final result agrees with that of Allen on de Sitter background, while the flat space limit agrees with the classic result of Coleman and Weinberg.
description: 42 pages, 15 figures, uses LaTeX2e. Version 2 slightly revised for publication, now 44 pages
Spectroscopy of i-Dropout Galaxies with an NB921-Band Depression in the Subaru Deep Field
Creators: name: Nagao, T.
name: Kashikawa, N.
name: Malkan, M. A.
name: Murayama, T.
name: Taniguchi, Y.
name: Shimasaku, K.
name: Motohara, K.
name: Ajiki, M.
name: Shioya, Y.
name: Ohta, K.
name: Okamura, S.
name: Iye, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report new spectroscopy of two star-forming galaxies with strong Ly_alpha emission at z=6.03 and z=6.04 in the Subaru Deep Field. These two objects are originally selected as i'-dropouts (i'-z' > 1.5) showing an interesting photometric property, the ``NB921 depression''. The NB921-band (centered at 9196A) magnitude is significantly depressed with respect to the z'-band magnitude. The optical spectra of these two objects exhibit asymmetric emission-lines at lambda_obs ~ 8540A and ~ 8560A, suggesting that these objects are Ly_alpha emitters at z~6. The rest-frame equivalent widths of the Ly_alpha emission of the two objects are 94A and 236A; the latter one is the Ly_alpha emitter with the largest Ly_alpha equivalent width at z > 6 ever spectroscopically confirmed. The spectroscopically measured Ly_alpha fluxes of these two objects are consistent with the interpretation that the NB921 depression is caused by the contribution of the strong Ly_alpha emission to the z'-band flux. Most of the NB921-depressed i'-dropout objects are thought to be strong Ly_alpha emitters at 6.0 < z < 6.5; Galactic L and T dwarfs and NB921-dropout galaxies at z > 6.6 do not dominate the NB921-depressed i'-dropout sample. Thus the NB921-depression method is very useful for finding high-z Ly_alpha emitters with a large Ly_alpha equivalent width over a large redshift range, 6.0 < z < 6.5. Although the broadband-selected sample at z ~ 3 contains only a small fraction of objects with a Ly_alpha equivalent width larger than 100A, the i'-dropout sample of the Subaru Deep Field contains a much larger fraction of such strong Ly_alpha emitters. This may imply a strong evolution of the Ly_alpha equivalent width from z > 6 to z ~ 3.
description: 21 pages, 6 figures, to appear in The Astrophysical Journal
Reweighted nuclear PDFs using Heavy-Flavor Production Data at the LHC: nCTEQ15_rwHF & EPPS16_rwHF
Creators: name: Kusina, Aleksander
name: Lansberg, Jean-Philippe
name: Schienbein, Ingo
name: Shao, Hua-Sheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the reweighting of two sets of nuclear PDFs, nCTEQ15 and EPPS16, using a selection of experimental data on heavy-flavor meson [D0, J/psi, J/psi from B and Upsilon(1S)] production in proton-lead collisions at the LHC which were not used in the original determination of these nuclear PDFs. The reweighted PDFs exhibit significantly smaller uncertainties thanks to these new heavy-flavor constraints. We present a comparison with another selection of data from the LHC and RHIC which were not included in our reweighting procedure. The comparison is overall very good and serves as a validation of these reweighted nuclear PDF sets, which we dub nCTEQ15_rwHF & EPPS16_rwHF. This indicates that the LHC and forward RHIC heavy-flavor data can be described within the standard collinear factorization framework with the same (universal) small-x gluon distribution. We discuss how we believe such reweighted PDFs should be used as well as the limitations of our procedure.
description: Latex, 20 pages, 20 figures, 1 table; v2: a few references added
null synergistische Zusammenspiel zwischen Elektrosynthese und Photokatalyse
Creators: name: Enders, Patrick
Publisher: name: Universität Rostock
Year: 2023
Subjects: subject: 500 Natural sciences
subject: 540 Chemistry & allied sciences

description: Diese Arbeit untersucht synergistische Effekte zwischen Elektrosynthese und Photokatalyse anhand dreier Studien. Die Nutzung von elektrochemischen Mediatoren in der Photokatalyse wurde untersucht und ein allgemeines Konzept für weitere Übertragungen erarbeitet. Ebenso wurde eine DFT-Rechnungs-basierte Methode entwickelt, die die Bestimmung von Lebenszeiten angeregter Zustände in Radikalanionenphotokatalysatoren ermöglicht und mit experimentellen Daten unterstützt. Zuletzt wurde eine heterogen photokatalysierte Synthesemethode für die Newman-Kwart-Reaktion entwickelt und mechanistisch untersucht.
O MESTRE DE BANDA COMO EDUCADOR: Uma etnografia da Banda de Música do Rio das Mortes (MG)
Creators: name: Silva, Clesio Francisco
Publisher: name: Zenodo
Year: 2020
Subjects: band master
Musical education
Mestre de Banda
Educação Musical

description:  Levando em consideração as mais de setecentas bandas de músicas existentes no Estado de Minas Gerais, fica nítida existência de uma grande diversidade e uma rica fonte de conhecimento em termos pedagógicos e metodológicos que podem contribuir para o desenvolvimento da educação musical brasileira. Nesse contexto, as bandas de música têm se destacado por serem consideradas educandários musicais permanentes, democráticos e de fácil acesso nas cidades do interior, onde muitas delas são reconhecidas como patrimônio cultural imaterial. Por isso, o presente trabalho propõe um estudo etnográfico da Banda do Rio das Mortes (MG), tomando por base o papel dos mestres da banda como educadores. A partir de entrevistas, suplementadas pela análise de documentos, observação etnográfica dos ensaios, das aulas e de apresentações diversas realizadas dentro e fora da comunidade do Rio das Mortes, são identificadas algumas características intrínsecas à aprendizagem que acontece naquela banda, pautada pela colaboração entre os músicos aprendizes. Além disso, por meio da construção de um “diálogo” foi possível analisar, compreender, identificar, questionar e legitimar as possíveis metodologias utilizadas pelos mestre de banda que utilizam, principalmente, o conhecimento empírico que possuem para acelerar e simplificar o aprendizado musical realizado naquela corporação. Taking into account the more than seven hundred music bands existing in the State of Minas Gerais, it is clear that there is great diversity and a rich source of knowledge in pedagogical and methodological terms that can contribute to the development of Brazilian music education. In this context, music bands have stood out for being considered permanent, democratic and easily accessible musical schools in the interior cities, where many of them are recognized as intangible cultural heritage. Therefore, this work proposes an ethnographic study of the Rio das Mortes Band (MG), based on the role of the band's masters as educators. From interviews, supplemented by document analysis, ethnographic observation of rehearsals, classes and various presentations held within and outside the Rio das Mortes community, some characteristics intrinsic to the learning that takes place in that band are identified, guided by the collaboration between the apprentice musicians. In addition, through the construction of a "dialogue" it was possible to analyze, understand, identify, question and legitimize the possible methodologies used by band masters who mainly use the empirical knowledge they have to accelerate and simplify the musical learning carried out in that corporation.
Crossover from Thermal Activation to Quantum Interlayer Transport at the Superconducting Transition Temperature of Bi-2212
Creators: name: Katterwe, S. O.
name: Rydh, A.
name: Krasnov, V. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We perform a detailed study of temperature, bias and doping dependance of interlayer transport in the layered high temperature superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$. We observe that the shape of interlayer characteristics in underdoped crystals exhibit a remarkable crossover at the superconducting transition temperature: from thermal activation-type at $T>T_c$, to almost $T-$independent quantum tunneling-type, at $T
description: 10 pages, 10 figures
title: ‚Nützliches‘ Wissen in der wissenschaftlichen Politikberatung?: Ein linguistisch-erkenntnistheoretisches Projekt
Creators: name: Gondolf, Janine
name: Grunwald, Armin
name: Jahaj, Dorothee
name: Janich, Nina
name: Karlsruhe Institute Of Technology (KIT)
name: Institute For Technology Assessment And Systems Analysis (ITAS)
Publisher: name: oekom
Year: 2024

description: Wissenschaftliche Politikberatung ist eine besondere, da hybride Art der wissenschaftlichen Tätigkeit: Wissenschaft in ihrer beratenden Funktion gerät in den Konflikt, Inhalte wissenschaftlich glaubwürdig, sachbezogen und wertfrei darstellen und gleichermaßen politisch wirksam, d. h. handlungsleitend und öffentlich nachvollziehbar, aufbereiten zu müssen. Die daraus resultierenden Texte sind daher für die Wissenschaftsforschung spannend im Blick auf die Frage, wie sich in ihnen das Ringen um epistemische Qualität und soziale Legitimierung sprachlich und inhaltlich in der (Ko-)Konstruktion von Wissen niederschlägt. Im Rahmen eines aktuellen interdisziplinären DFG-Projekts wird die Praxis wissenschaftlicher Politikberatung in Deutschland in Form, Inhalt und Funktion anhand exemplarischer Fälle linguistisch und erkenntnistheoretisch untersucht.
Bäumler, Christof / Mette, Norbert (Hrsg.), Gemeindepraxis in Grundbegriffen
Creators: name: Fritz, Gerhard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 37 Nr. 3 (1988): Ökumenische Rundschau, Band 37, Heft 3
CURADORIA EDUCATIVA PARA PÚBLICOS ESPONTÂNEOS: Estudo sobre Mediação de exposições de artes visuais contemporâneas em duas instituições no Brasil
Creators: name: Diniz, Giovane da Silva
Publisher: name: Zenodo
Year: 2021
Subjects: Ações Educativas
Curadoria Pedagógica
Mediação Cultural
Educational Actions
pedagogical curatorship

description: Esta pesquisa aborda projetos de curadoria pedagógica que envolvem ações educativas para públicos espontâneos em exposições de artes visuais no Brasil a partir da análise de atividades desenvolvidas no Instituto Inhotim e na 33ª Bienal de São Paulo, juntamente com o programa de Itinerância da Bienal na Fundação Clóvis Salgado (FCS) em 2019. O estudo busca levantar quais ações educativas são voltadas para os públicos espontâneos nas instituições pesquisadas, suas estratégias e metodologias. O conteúdo traz análise de atividades temáticas ligadas às exposições, possibilitando ver novas práticas para a formação de públicos. A pesquisa apresenta as propostas de mediação desenvolvidas nas instituições estudadas além das metodologias aplicadas em cada evento ou recorte de exposição e as temáticas trabalhadas. O estudo buscou abordar a implementação e importância das ações educativas, baseadas em pesquisa bibliográfica e experiência profissional do pesquisador. This research addresses pedagogical curation projects involving educational activities for spontaneous audiences in visual arts exhibitions in Brazil, based on the analysis of activities developed at the Instituto Inhotim and at the 33rd Bienal de São Paulo, together with the Bienal Itinerancy program at Fundação Clóvis Salgado (FCS) in 2019. The study seeks to identify which educational actions are aimed at spontaneous audiences in the surveyed institutions, their strategies and methodologies. The content includes an analysis of thematic activities linked to the exhibitions, making it possible to see new practices for the formation of audiences. The research presents the mediation proposals developed in the studied institutions, in addition to the methodologies applied in each event or exhibition clipping and the themes worked on. The study sought to address the implementation and importance of educational actions, based on bibliographic research and the researcher's professional experience.