cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
No-regret Dynamics and Fictitious Play
Creators: name: Viossat, Yannick
name: Zapechelnyuk, Andriy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Potential based no-regret dynamics are shown to be related to fictitious play. Roughly, these are epsilon-best reply dynamics where epsilon is the maximal regret, which vanishes with time. This allows for alternative and sometimes much shorter proofs of known results on convergence of no-regret dynamics to the set of Nash equilibria.
title: YEARBOOK 2019/2020. Arts Museology and Curatorship
Creators: name: Rosellini, Anna
name: Ricci, Clarissa
Publisher: name: Dipartimento delle Arti
Year: 2023

description: Yearbook is the first collection of AMaC’s student projects developed during the first two years of the course. AMaC is a Master’s degree in Arts, Museology and Curatorship with a clear mission: to educate and train professionals with creative and research skills essential to developing successful arts and cultural heritage strategies. This broad and demanding field requires an engagement with the current debate on common goods, the identity of communities, access to heritage art, and the impact of the arts on society.
Seeing inside the field: From those who work in the field of teacher education. Gallery and research site.
Creators: name: Selkrig, Mark
name: Belton, Amanda
name: McDonough, Sharon
name: Keamy, Ron
name: Brandenburg, Robyn
Publisher: name: University of Melbourne
Year: 2022
Subjects: Teacher education and professional development of educators

description: This site has been developed to outline and share the findings of a significant research project titled: Seeing inside the field: From those who work in the field of teacher education.
Seeing inside the field: From those who work in the field of teacher education. Gallery and research site
Creators: name: Selkrig, Mark
name: Belton, Amanda
name: McDonough, Sharon
name: Keamy, Ron
name: Brandenburg, Robyn
Publisher: name: University of Melbourne
Year: 2022
Subjects: Teacher education and professional development of educators

description: This site has been developed to outline and share the findings of a significant research project titled: Seeing inside the field: From those who work in the field of teacher education.
Moving mesh cosmology: properties of neutral hydrogen in absorption
Creators: name: Bird, Simeon
name: Vogelsberger, Mark
name: Sijacki, Debora
name: Zaldarriaga, Matias
name: Springel, Volker
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine the distribution of neutral hydrogen in cosmological simulations carried out with the new moving-mesh code AREPO and compare it with the corresponding GADGET simulations based on the smoothed particle hydrodynamics (SPH) technique. The two codes use identical gravity solvers and baryonic physics implementations, but very different methods for solving the Euler equations, allowing us to assess how numerical effects associated with the hydro-solver impact the results of simulations. Here we focus on an analysis of the neutral gas, as detected in quasar absorption lines. We find that the high column density regime probed by Damped Lyman-alpha (DLA) and Lyman Limit Systems (LLS) exhibits significant differences between the codes. GADGET produces spurious artefacts in large halos in the form of gaseous clumps, boosting the LLS cross-section. Furthermore, it forms halos with denser central baryonic cores than AREPO, which leads to a substantially greater DLA cross-section from smaller halos. AREPO thus produces a significantly lower cumulative abundance of DLAs, which is intriguingly in much closer agreement with observations. The column density function, however, is not altered enough to significantly reduce the discrepancy with the observed value. For the low column density gas probed by the Lyman-alpha forest, the codes differ only at the level of a few percent, suggesting that this regime is quite well described by both methods, a fact that is reassuring for the many Lyman-alpha studies carried out with SPH thus far. While the residual differences are smaller than the errors on current Lyman-alpha forest data, we note that this will likely change for future precision experiments.
description: 13 pages, 11 figures, minor changes to version accepted by MNRAS. Images can be found at http://www.cfa.harvard.edu/itc/research/movingmeshcosmology
Lattice evidence for the family of decoupling solutions of Landau gauge Yang-Mills theory
Creators: name: Sternbeck, Andre
name: Müller-Preussker, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the low-momentum behavior of the lattice Landau-gauge gluon and ghost propagators is sensitive to the lowest non-trivial eigenvalue (λ_1) of the Faddeev-Popov operator. If the gauge fixing favors Gribov copies with small λ_1 the ghost dressing function rises more rapidly towards zero momentum than on copies with large λ_1. This effect is seen for momenta below 1 GeV, and interestingly also for the gluon propagator at momenta below 0.2 GeV: For large λ_1 the gluon propagator levels out to a lower value at zero momentum than for small λ_1. For momenta above 1 GeV no dependence on Gribov copies is seen. Although our data is only for a single lattice size and spacing, a comparison to the corresponding (decoupling) solutions from the DSE/FRGE study of Fischer, Maas and Pawlowski [Annals of Physics 324 (2009) 2408] yields already a good qualitative agreement.
description: 8 pages, 5 figures. PLB, in press. Replaced to match accepted version: discussion expanded, results unchanged
Non-Gaussianities from the Standard Model Higgs
Creators: name: De Simone, Andrea
name: Perrier, Hideki
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have recently proposed that the Standard Model Higgs might be responsible for generating the cosmological perturbations of the universe by acting as an isocurvature mode during a de Sitter inflationary stage. In this paper we study the level of non-Gaussianity in the cosmological perturbations which are inevitably generated due to the non-linearities of the Standard Model Higgs potential. In particular, for the current central value of the top mass, we find that a future detection of non-Gaussianity would exclude the detection of tensor modes by the PLANCK satellite.
description: 13 pages, 3 figures. Minor corrections and references added to match published version
Martin Robson, The Napoleonic Wars, London, New York (I. B. Tauris) 2014
Creators: name: Djebabla, Mourad
Publisher: name: Francia-Recensio
Year: 2019

description: Martin Robson, The Napoleonic Wars, London, New York (I. B. Tauris) 2014, 256 p., 16 col. 50 b/w ill., maps (A History of the Royal Navy), ISBN 978-1-78076-544-0, GBP 20,00.
description: Francia-Recensio, 2019/2
The Recent Italian Regulations About The Open-Access Availability Of Publicly-Funded Research Publications, And The Documentation Landscape In Astrophysics
Creators: name: Marra, Monica
Publisher: name: Zenodo
Year: 2014
Subjects: open access
astronomy and astrophysics

description: In October 2013 Italy enacted Law 112, containing the first national regulations about the open-access availability of publicly-funded research results (publications). This contribution examines how these new regulations match with the specific situation of that open-access pioneering discipline which is astrophysics.
Orthogonality catastrophe and decoherence in a trapped-Fermion environment
Creators: name: Sindona, A.
name: Goold, J.
name: Gullo, N. Lo
name: Lorenzo, S.
name: Plastina, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Fermi edge singularity and the Anderson orthogonality catastrophe describe the universal physics which occurs when a Fermi sea is locally quenched by the sudden switching of a scattering potential, leading to a brutal disturbance of its ground state. We demonstrate that the effect can be seen in the controllable domain of ultracold trapped gases by providing an analytic description of the out-of-equilibrium response to an atomic impurity, both at zero and at finite temperature. Furthermore, we link the transient behavior of the gas to the decoherence of the impurity, and, in particular to the amount of non-markovianity of its dynamics.
description: substantially rewritten - errors and typos corrected
Understanding Student Computational Thinking with Computational Modeling
Creators: name: Aiken, John M.
name: Caballero, Marcos D.
name: Douglas, Scott S.
name: Burk, John B.
name: Scanlon, Erin M.
name: Thoms, Brian D.
name: Schatz, Michael F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Recently, the National Research Council's framework for next generation science standards highlighted "computational thinking" as one of its "fundamental practices". 9th Grade students taking a physics course that employed the Modeling Instruction curriculum were taught to construct computational models of physical systems. Student computational thinking was assessed using a proctored programming assignment, written essay, and a series of think-aloud interviews, where the students produced and discussed a computational model of a baseball in motion via a high-level programming environment (VPython). Roughly a third of the students in the study were successful in completing the programming assignment. Student success on this assessment was tied to how students synthesized their knowledge of physics and computation. On the essay and interview assessments, students displayed unique views of the relationship between force and motion; those who spoke of this relationship in causal (rather than observational) terms tended to have more success in the programming exercise.
description: preprint to submit to PERC proceedings 2012
Addendum to "On an unverified nuclear decay and its role in the DAMA experiment''
Creators: name: Pradler, Josef
name: Yavin, Itay
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We reply to the critiques of our paper arXiv:1210.5501 by the DAMA collaboration which appeared in arXiv:1210.6199 and arXiv:1211.6346. Our original claim that the observed background levels are likely to require a large modulation fraction of any putative signal holds. In fact, in light of DAMA's recent comment our claim is further corroborated. We identify the source of the discrepancy between our own analysis and DAMA's claimed levels of unmodulated background. Our analysis indicates that the background in the signal region as reported by DAMA is indeed likely underestimated.
description: 6 pages, 2 figures; replacement of the original reply to arXiv:1210.6199 to include a response to the second critique in arXiv:1211.6346. A fit to the unmodulated rate including signal is presented. No change in the conclusions
title: Quantifying entanglement in the one-dimensional Heisenberg spin chain
Creators: name: Mirsadegh, Pouria
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: This thesis aims to investigate the entanglement properties of the one-dimensional Heisenberg spin chain, with a focus on the entanglement between pairs of spins. Specifically, we explore how entanglement depends on temperature and coupling constants without an external magnetic field and then consider the effect of an external magnetic field on entanglement. To model the system, we utilize the Hamiltonian of the 1D Heisenberg spin chain and calculate the density matrix. We use the concurrence as a measure of entanglement, which is applicable to mixed state densities. Our main findings demonstrate that the entanglement between pairs of spins in the Heisenberg spin chain increases as temperature decreases or coupling constants increase. We also identify a critical range of magnetic fields in which the entanglement between spin pairs undergoes significant changes. Finally, we examine the relationship between entanglement and the number of lattice sites separating given pairs of spins. Our results reveal that as the number of lattice sites between pairs of spins increases, the entanglement between them decreases. Overall, this study provides insights into the entanglement properties of the one-dimensional Heisenberg spin chain and sheds light on the factors that influence entanglement in quantum systems. These findings potentially have important implications for the design and development of quantum information processing devices.
Supermassive Population III Supernovae and the Birth of the First Quasars
Creators: name: Whalen, Daniel J.
name: Even, Wesley
name: Smidt, Joseph
name: Heger, Alexander
name: Chen, K. -J.
name: Fryer, Chris L.
name: Stiavelli, Massimo
name: Xu, Hao
name: Joggerst, Candace C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The existence of supermassive black holes as early as z ~ 7 is one of the great unsolved problems in cosmological structure formation. One leading theory argues that they are born during catastrophic baryon collapse in z ~ 15 protogalaxies in strong Lyman-Werner UV backgrounds. Atomic line cooling in such galaxies fragments baryons into massive clumps that are thought to directly collapse to 10^4 - 10^5 solar-mass black holes. We have now discovered that some of these fragments can instead become supermassive stars that eventually explode as pair-instability supernovae with energies of ~ 10^55 erg, the most energetic explosions in the universe. We have calculated light curves and spectra for supermassive Pop III PI SNe with the Los Alamos RAGE and SPECTRUM codes. We find that they will be visible in NIR all-sky surveys by Euclid out to z ~ 10 - 15 and by WFIRST and WISH out to z ~ 15 - 20, perhaps revealing the birthplaces of the first quasars.
description: 13 pages, 11 figures, accepted by ApJ
Dream content analysis using Artificial Intelligence
Creators: name: McNamara, Patrick
name: Duffy-Deno, Kelly
name: Marsh, Tom
name: Marsh, Thomas
Publisher: name: International Journal of Dream Research
Year: 2019

description: We developed a dream content analysis system (DCAS) based on an artificial intelligence (AI) algorithm that was trained using a relatively large corpus of over 35,000 dreams.  This sample of dreams were supplied by 424 female and 211 male users over 4 years who had posted them at the dream posting website and app Dreamboard.com. Building upon previous dream content ontologies developed by Hall, Van de Castle, Domhoff and Bulkeley, forty-seven reliably identified dream themes emerged from repeated application of algorithm and agent training procedures. DCAS reproduced most of the key dream content themes from these previous ontologies but also returned some unexpected findings. Mixed-model estimation detected significant male-female content differences for 34 dream themes, with female dreams evidencing higher incidence percentages for most themes, but effect sizes were small. Mixed-model logistic regression identified those themes that best predicted self-reported positive or negative mood associated with dreams.  We conclude that the AI-based DCAS algorithm developed here is a promising tool for detailed analyses of dream content patterns.
description: International Journal of Dream Research, Vol 12, No 1 (April 2019)
An Approximate Solution of the Dynamical Casimir Effect in a Cavity with a Two-Level Atom
Creators: name: Fujii, Kazuyuki
name: Suzuki, Tatsuo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we treat the so-called dynamical Casimir effect in a cavity with a two--level atom and give an analytic approximate solution under the general setting. The aim of the paper is to show another approach based on Mathematical Physics to the paper [arXiv : 1112.0523 (quant-ph)] by A. V. Dodonov and V. V. Dodonov. We believe that our method is simple and beautiful.
description: Latex ; 11 pages ; no figure ; minor changes. To appear in International Journal of Geometric Methods in Modern Physics
H. Borger, Das Münster St. Vitus zu Mönchen-Gladbach
Creators: name: Kubach, Hans Erich
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Rezension zu: H. Borger, Das Münster St. Vitus zu Mönchen-Gladbach (Die Kunstdenkmäler des Rheinlandes 6). Essen (Fredebeul und Koenen) 1958. 308 S. mit 373 Abbildungen und 6 Tafeln.
description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 5 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Vector-Valued Polynomials and a Matrix Weight Function with $B_2$-Action
Creators: name: Dunkl, Charles F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C52, 42C05, 33C05

description: The structure of orthogonal polynomials on $\mathbb{R}^{2}$ with the weight function $| x_{1}^{2}-x_{2}^{2}|^{2k_{0}}| x_{1}x_{2}|^{2k_{1}}e^{-(x_{1}^{2}+x_{2}^{2})/2}$ is based on the Dunkl operators of type $B_{2}$. This refers to the full symmetry group of the square, generated by reflections in the lines $x_{1}=0$ and $x_{1}-x_{2}=0$. The weight function is integrable if $k_{0},k_{1},k_{0}+k_{1}>-\frac{1}{2}$. Dunkl operators can be defined for polynomials taking values in a module of the associated reflection group, that is, a vector space on which the group has an irreducible representation. The unique 2-dimensional representation of the group $B_{2}$ is used here. The specific operators for this group and an analysis of the inner products on the harmonic vector-valued polynomials are presented in this paper. An orthogonal basis for the harmonic polynomials is constructed, and is used to define an exponential-type kernel. In contrast to the ordinary scalar case the inner product structure is positive only when $(k_{0},k_{1})$ satisfy $-\frac{1}{2}
description: This is the expanded version of an invited lecture presented at the Conference on Harmonic Analysis, Convolution Algebras, and Special Functions, TU M\"unchen, 10 Sept. 2012; v2: the construction of an exponential-type function has been added; v3: published version
Survival of HCN during impacts in N2-dominated planetary atmospheres: Supplementary Information
Creators: name: Knížek, Antonín
name: Petera, Lukáš
name: Laitl, Vojtěch
name: Ferus, Martin
Publisher: name: Zenodo
Year: 2023
Subjects: Laboratory astrophysics
Infrared spectroscopy
Exoplanet atmospheric evolution
Titan
Exoplanet atmospheres

description: Supplementary Information to a paper entitled: Survival of HCN during impacts in N2-dominated planetary atmospheres. This information contain extended data analysis description along with supportng plots generated during the analysis. The main file also contains extended description of the experiment.
Tode, Alfred: Mammutjäger vor 100 000 Jahren
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Tode, Alfred: Mammutjäger vor 100 000 Jahren. Natur und Mensch in Nordwestdeutschland zur letzten Eiszeit auf Grund der Ausgrabungen bei Salzgitter-Lebenstedt. Braunschweig (E. Appelhans u. Co.) 1954. 120 Seiten mit 72 Abb. Geb.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 24 (1955): Nachrichten aus Niedersachsens Urgeschichte
Ersfeld, H. J.: Funde der Vorzeit, ihre Bergung, Konservierung und Ausstellung
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Ersfeld, H. J.: Funde der Vorzeit, ihre Bergung, Konservierung und Ausstellung. Weimar (Hermann Böhlaus Nachf.) 1955. 167 Seiten mit 112 Abb. Geb.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 25 (1956): Nachrichten aus Niedersachsens Urgeschichte
Connection dynamics of a gauge theory of gravity coupled with matter
Creators: name: Yang, Jian
name: Banerjee, Kinjal
name: Ma, Yongge
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the coupling of the gravitational action, which is a linear combination of the Hilbert-Palatini term and the quadratic torsion term, to the action of Dirac fermions. The system possesses local Poincare invariance and hence belongs to Poincare gauge theory with matter. The complete Hamiltonian analysis of the theory is carried out without gauge fixing but under certain ansatz on the coupling parameters, which leads to a consistent connection dynamics with second-class constraints and torsion. After performing a partial gauge fixing, all second-class constraints can be solved, and a SU(2)-connection dynamical formalism of the theory can be obtained. Hence, the techniques of loop quantum gravity can be employed to quantize this Poincare gauge theory with non-zero torsion. Moreover, the Barbero-Immirzi parameter in loop quantum gravity acquires its physical meaning as the coupling parameter between the Hilbert-Palatini term and the quadratic torsion term in this gauge theory of gravity.
description: Significant Modifications. Accepted for publication in CQG
Critical Behaviour of the Number of Minima of a Random Landscape at the Glass Transition Point and the Tracy-Widom distribution
Creators: name: Fyodorov, Yan V.
name: Nadal, Celine
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We exploit a relation between the mean number $N_{m}$ of minima of random Gaussian surfaces and extreme eigenvalues of random matrices to understand the critical behaviour of $N_{m}$ in the simplest glass-like transition occuring in a toy model of a single particle in $N$-dimensional random environment, with $N\gg 1$. Varying the control parameter $μ$ through the critical value $μ_c$ we analyse in detail how $N_{m}(μ)$ drops from being exponentially large in the glassy phase to $N_{m}(μ)\sim 1$ on the other side of the transition. We also extract a subleading behaviour of $N_{m}(μ)$ in both glassy and simple phases. The width $δμ/μ_c$ of the critical region is found to scale as $N^{-1/3}$ and inside that region $N_{m}(μ)$ converges to a limiting shape expressed in terms of the Tracy-Widom distribution.
Julia-Toulouse approach to (d+1)-dimensional bosonized Schwinger model with an application to large N QCD
Creators: name: Guimaraes, M. S.
name: Rougemont, R.
name: Wotzasek, C.
name: Zarro, C. A. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Julia-Toulouse approach for condensation of charges and defects is used to show that the bosonized Schwinger model can be obtained through a condensation of electric charges in 1+1 dimensions. The massive model is derived by taking into account the presence of vortices over the electric condensate, while the massless model is obtained when these vortices are absent. This construction is then straightforwardly generalized for arbitrary d+1 spacetime dimensions. The d=3 case corresponds to the large N chiral dynamics of SU(N) QCD in the limit $N\rightarrow\infty$.
description: Improved discussions, references added, 7 pages
title: Refining terrestrial biosphere feedbacks to climate change through precise characterization of terrestrial vegetation
Creators: name: Spafford, Lynsay
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: Climate change is primarily driven by the human activities of fossil fuel combustion and land use change, which together result in the emissions of greenhouse gases such as carbon dioxide (CO₂). The terrestrial biosphere currently absorbs about a third of total anthropogenic CO₂ emissions, mostly through primary production by vegetation. The continued function of vegetation as a CO₂ sink is uncertain, as climate change has the potential to enhance or restrict the carbon uptake capacity of vegetation. Uncertainty in terrestrial vegetation function in the context of climate change, due in part to a lack of precise observations of leaf biochemistry and function with which to develop models, therefore limits the confidence of climate change projections. In its entirety, this thesis examines the potential for more precise observations of leaf function and their integration across a variety of models and observational scales. The first chapter provides an introductory overview of the subsequent four chapters and how each compliments the other. The second chapter demonstrates the role of the terrestrial biosphere in influencing the relationship between temperature change and cumulative CO₂ emissions. The third chapter provides adaptations to current radiative transfer modelling approaches to improve estimations of leaf biochemical constituents. The fourth chapter applies high spatiotemporal resolution observations of leaf phenology, the timing of leaf emergence and senescence, across North America to predict species-specific leaf phenology patterns under various emissions scenarios throughout the 21st century. The fifth chapter provides an approach to detect declines in ecosystem processes such as carbon uptake using observational leaf phenology networks. These chapter results indicate that 1) uncertainty in the land-borne fraction of carbon emissions contributes largely to uncertainty in the relationship between temperature change and emissions, 2) spectral subdomains and prior estimation of leaf structure improves leaf biochemistry estimations, 3) leaf senescence timing may diverge between boreal and temperate species under a high emissions scenario, and 4) declines in vegetational carbon uptake can be accurately detected using quantitative phenocam-based indicators. The fundamental and technical insights provided through this thesis will facilitate more reliable and functionally resolved projections of terrestrial biosphere feedbacks to climate change.
From the time series to the complex networks: the parametric (dynamical) natural visibility graph
Creators: name: Bezsudnov, I. V.
name: Snarskii, A. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We present the modification of natural visibility graph (NVG) algorithm used for the mapping of the time series to the complex networks (graphs). We propose the parametric natural visibility graph (PNVG) algorithm. The PNVG consists of NVG links, which satisfy an additional constraint determined by a newly introduced continuous parameter - the view angle. The alteration ofview angle modifiesthe PNVG and its properties such as the average node degree, average link length of the graph as well as cluster quantity of built graph etc. Wecalculated and analyzed different PNVG properties depending on the view angle for different types of the time series such as the random (uncorrelated, correlated and fractal) and cardiac rhythm time series for healthy and ill patients. Investigation of different PNVG properties shows that the view angle gives a new approach to characterize the structure of the time series that are invisible in the conventional version of the algorithm. It is also shown that the PNVG approach allows to distinguish, identify and describe in detail various time series.
description: 13 pages, 6 figures
Atkinson, R. J. C.: Stonehenge
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Atkinson, R. J. C.: Stonehenge. London (H. Hamilton) 1956. 204 S. mit 25 Tafeln, 7 Textabb. u. einem Plan. Leinen
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 26 (1957): Nachrichten aus Niedersachsens Urgeschichte
Top quark spin and $Htb$ interaction in charged Higgs and top quark associated production at LHC
Creators: name: Gong, Xue
name: Si, Zong-Guo
name: Yang, Shuo
name: Zheng, Ya-juan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the charged Higgs production at LHC via its associated production with top quark. The kinematic cuts are optimized to suppress the background processes so that the reconstruction of the charged Higgs and top quark is possible. The angular distributions with respect to top quark spin are explored to study the $Htb$ interaction at LHC.
description: 10 pages,5 figures, to appear in PRD
title: Exploring sustainability integration and expected outcomes of a digitalized product innovation work process for non-assembled products
Creators: name: Chirumalla, Koteshwar
name: Lager, Thomas
name: Ankerfors, Mikael
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 330 Economics

description: Sustainability and digitalization are currently strategic priorities for manufacturing companies to be globally competitive, and one option is to incorporate these aspects in a company product innovation work process; the topical area for this study. An exploratory inquiry has been conducted with nineteen global manufacturing companies in six sectors of the process industries, including the chemical industries. The findings indicate that the case-companies already have come far on the road in institutionalizing sustainability aspects in raw material selection, process technology development and product design. However, the study discloses a need for a more in-depth understanding how best practices and tools in a more systematic approach can make sustainability an integral part of the work process. The case-companies have not yet come far on their journeys with respect to digitalization of their product innovation work process, but particularly stress the importance of digitalization of customer and product information.
Life-course socioeconomic position and the gut microbiome in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL)
Creators: name: Lin, Juan
name: Thyagarajan, Bharat
name: Peters, Brandilyn A.
name: Batalha, Monica A.
name: Talavera, Gregory A.
name: Wang, Zheng
name: Wang, Tao
name: Cai, Jianwen
name: Daviglus, Martha L.
name: Qi, Qibin
name: Hou, Lifang
name: McClain, Amanda C.
name: Kaplan, Robert C.
name: Gallo, Linda C.
name: LeCroy, Madison N.
name: Llabre, Maria
name: Isasi, Carmen R.
Publisher: name: Taylor & Francis
Year: 2025

description:
Socioeconomic position (SEP) in childhood and beyond may influence the gut microbiome, with implications for disease risk. Studies evaluating the relationship between life-course SEP and the gut microbiome are sparse, particularly among Hispanic/Latino individuals, who have a high prevalence of low SEP. We use the Hispanic Community Health Study/Study of Latinos (HCHS/SOL), a population-based cohort study conducted in four field centers in the United States (U.S.), to evaluate the association between life-course SEP and gut microbiome composition. Life-course SEP indicators included parental education (proxy of childhood SEP), current SEP (n = 2174), and childhood (n = 988) and current economic hardship (n = 994). Shotgun sequencing was performed on stool samples. Analysis of Compositions of Microbiomes was used to identify associations of life-course SEP indicators with gut microbiome species and functions. Parental education and current SEP were associated with the overall gut microbiome composition; however, parental education and current education explained more the gut microbiome variance than the current SEP. A lower parental education and current SEP were associated with a lower abundance of species from genus Bacteroides. In stratified analysis by nativity, we found similar findings mainly among foreign-born participants. Early-life SEP may have long-term effects on gut microbiome composition underscoring another biological mechanism linking early childhood factors to adult disease.
Woldstedt, Paul: Norddeutschland und angrenzende Gebiete im Eiszeitalter
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Woldstedt, Paul: Norddeutschland und angrenzende Gebiete im Eiszeitalter. 2., neubearbeitete Auflage. Stuttgart (K. F. Köchler) 1955. 467 S. mit 97 Abb. im Text
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 26 (1957): Nachrichten aus Niedersachsens Urgeschichte
Asymptotic shape of small cells
Creators: name: Beermann, Mareen
name: Redenbach, Claudia
name: Thaele, Christoph
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60D05 (Primary) 60G55, 52A22 (Secondary)

description: A stationary Poisson line tessellation is considered whose directional distribution is concentrated on two different atoms with some positive weights. The shape of the typical cell of such a tessellation is studied when its area or its perimeter tends to zero. In contrast to known results where the area or the perimeter tends to infinity, it is shown that the asymptotic shape of cells having small area is degenerate. Again in contrast to the case of large cells, the asymptotic shape of cells with small perimeter is not uniquely determined. The results are accompanied by a large scale simulation study.
Casimir force due to condensed vortices in a plane
Creators: name: Neto, J. F. de Medeiros
name: Ramos, Rudnei O.
name: Santos, Carlos Rafael M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Casimir force between parallel lines in a theory describing condensed vortices in a plane is determined. We make use of the relation between a Chern-Simons-Higgs model and its dualized version, which is expressed in terms of a dual gauge field and a vortex field. The dual model can have a phase of condensed vortices and, in this phase, there is a mapping to a model of two non-interacting massive scalar fields from which the Casimir force can readily be obtained. The choice of boundary conditions required for the mapped scalar fields and their association with those for the vectorial field and the issues involved are discussed. We also briefly discuss the implications of our results for experiments related to the Casimir effect when vortices can be present.
description: 13 pages, 1 eps figure
Shock wave in Euler - Heisenberg - Köckel nonlinear vacuum
Creators: name: Kovachev, Lubomir M.
name: Georgieva, Daniela A.
name: Kovachev, Kamen L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: An analytical approach to the theory of electromagnetic waves in nonlinear vacuum is developed. The evolution of the pulse is governed by a system of nonlinear wave vector equations. Exact solution with own angular momentum in form of a shock wave is obtained.
description: 3 pages, 2 figures, correct typos
Fermionic T-duality: A snapshot review
Creators: name: Colgáin, Eoin Ó
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Through a self-dual mapping of the geometry AdS5 x S5, fermionic T-duality provides a beautiful geometric interpretation of hidden symmetries for scattering amplitudes in N=4 super-Yang-Mills. Starting with Green-Schwarz sigma-models, we consolidate developments in this area into this small review. In particular, we discuss the translation of fermionic T-duality into the supergravity fields via pure spinor formalism and show that a general class of fermionic transformations can be identified directly in the supergravity. In addition to discussing fermionic T-duality for the geometry AdS4 x CP3, dual to N=6 ABJM theory, we review work on other self-dual geometries. Finally, we present a short round-up of studies with a formal interest in fermionic T-duality.
description: 1+25 pages, typos fixed, updated Journal reference
Linear Dependencies in Weyl-Heisenberg Orbits
Creators: name: Dang, Hoan Bui
name: Blanchfield, Kate
name: Bengtsson, Ingemar
name: Appleby, D. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Five years ago, Lane Hughston showed that some of the symmetric informationally complete positive operator valued measures (SICs) in dimension 3 coincide with the Hesse configuration (a structure well known to algebraic geometers, which arises from the torsion points of a certain elliptic curve). This connection with elliptic curves is signalled by the presence of linear dependencies among the SIC vectors. Here we look for analogous connections between SICs and algebraic geometry by performing computer searches for linear dependencies in higher dimensional SICs. We prove that linear dependencies will always emerge in Weyl-Heisenberg orbits when the fiducial vector lies in a certain subspace of an order 3 unitary matrix. This includes SICs when the dimension is divisible by 3 or equal to 8 mod 9. We examine the linear dependencies in dimension 6 in detail and show that smaller dimensional SICs are contained within this structure, potentially impacting the SIC existence problem. We extend our results to look for linear dependencies in orbits when the fiducial vector lies in an eigenspace of other elements of the Clifford group that are not order 3. Finally, we align our work with recent studies on representations of the Clifford group.
description: 29 pages, 2 figures Quantum Inf Process (2013)
Das Recht auf Schutz der Privatsphäre im Cyberspace
Creators: name: Tuchtfeld, Erik
Publisher: name: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online
Year: 2019

description: Der Beitrag stellt das Mehrebenensystem des internationalen Menschenrechtsschutzesam Beispiel des Rechts auf Schutz der Privatsphäre im Cyberspace dar. Neben Normen des globalen Menschenrechtsschutzes werden Besonderheiten des regionalen Menschenrechtsschutzes anhand der EMRK sowie des Unionsrechts behandelt. Ein Schwerpunkt des Beitrags liegt dabei auf der Frage nach der Anwendbarkeit etablierter völkerrechtlicher Verträge im Bereich des Cyberspace. Problematisiert wird außerdem die Zurechnung der Handlungen privater Akteure zu Staaten. Ferner wird die EU-Datenschutzgrundverordnung als Beispiel für eine konkrete Ausformung der staatlichen Pflicht zum Schutz der Privatsphäre im Cyberspace vorgestellt. Abschließend werden Maßnahmen zur Verbesserung der tatsächlichen Durchsetzung des Rechts auf Privatsphäre im Cyberspace vorgeschlagen.


The paper presents the multi-level system of international Human Rights protection, using the right to privacy in cyberspace as an example. Beside norms of global human rights law, particularities of regional human rights law based on the ECHR as well as European Union law are addressed. One of the main focuses of this paper is the question of the applicability of established international treaties in the field of cyberspace. In addition, the attribution of the actions of private actors to states is problematized. Furthermore, the EU General Data Protection Regulation is introduced as an example of a concrete implementation of the state’s obligation to protect privacy in cyberspace. Finally, measures are proposed to improve the actual enforcement of the right to privacy in cyberspace.
description: Studentische Zeitschrift für Rechtswissenschaft Heidelberg – Wissenschaft Online, Nr. 2 (2018): StudZR-WissOn
title: Corporate sexual orientation equality and carbon emission
Creators: name: Hossain, Ashrafee Amir
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: Does a firm’s tolerance and nurturing of its alternate sexual orientation employees influence its long-term sustainability? Using the corporate sexual orientation equality (CSOE) environment, we show that firms with higher CSOE ratings emit less greenhouse gas (GHG) thereby ensuring long-term sustainability. In addition, we report that the aforementioned CSOE-GHG relationship is stronger for firms with less agency issues (e.g., less powerful CEOs and more monitoring). Finally, we find that carbon emitting firms (CEFs) that invest in higher levels of CSOE initiatives are not doing it for external rewards (e.g., they suffer from lower firm valuation and face a higher cost of raising capital).
A synchrotron cooling model for the NIR/X-ray flares of Sgr A*
Creators: name: Mahe, Cloe
name: Petropoulou, Maria
name: Vasilopoulos, Georgios
Publisher: name: Zenodo
Year: 2023
Subjects: Sgr A*
non-thermal radiation
flares

description: Sgr A*, the supermassive black hole at the center of our Galaxy, is accreting mass from its surroundings at an extremely low rate of about 3e-13 Msun/yr. Sgr A* is therefore a unique laboratory to study the physical processes at work in quiescent accreting systems. The observation of flares with hour-long duration in the near-infrared and X-ray wavelengths from Sgr A* suggests the formation of active flaring regions in the accretion flow of Sgr A* filled with relativistic electrons that produce non-thermal radiation. The aim of this project is to fit the 2014 NIR/X-ray flare from Sgr A* with a synchrotron cooling model using Markov-Chain Monte Carlo simulations. By obtaining the posterior distributions for the parameters describing the flaring region, such as size and magnetic field strength, we are able to study the degeneracies between model parameters and their evolution with time. Our results support a scenario where a hot spot in the accretion of Sgr A* with kG magnetic fields and size of ~1/1000 of the Schwarzschild radius is the production site of the non-thermal flares. Our method can be easily applied to a larger sample of NIR/X-ray flares in order to extract a statistical sample for the properties of the flaring regions.
The Elliptic Law
Creators: name: Nguyen, Hoi
name: O'Rourke, Sean
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We show that, under some general assumptions on the entries of a random complex $n \times n$ matrix $X_n$, the empirical spectral distribution of $\frac{1}{\sqrt{n}} X_n$ converges to the uniform law of an ellipsoid as $n$ tends to infinity. This generalizes the well-known circular law in random matrix theory.
description: 57 pages; minor corrections
Constraints for non-standard interaction epsilon_{e tau}V_e from nu_e appearance in MINOS and T2K
Creators: name: Coelho, Joao A. B.
name: Kafka, Tomas
name: Mann, W. Anthony
name: Schneps, Jacob
name: Altinok, Ozgur
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Event rates for nu_e and anti-nu_e appearance oscillations reported by the MINOS and T2K long baseline experiments are used to set constraints on the strength of the non-standard interaction epsilon_{e tau}V_e matter potential. The ranges allowed for the magnitude and phase of epsilon_{e tau} are delineated for scenarios wherein i) other non-standard interactions for neutrinos propagating through the terrestrial crust are negligible, and ii) the real-valued, flavor-diagonal couplings epsilon_{e e} and epsilon_{tau tau} are also operative. Our analysis makes use of accurate analytic forms for the nu_e amplitude A(nu_mu --> nu_e) describing neutrino oscillation in constant-density matter in the presence of epsilon_{e tau}, epsilon_{e e} and epsilon_{tau tau} non- standard interactions.
description: 11 pages, 3 figures
Unconventional quantum ordered and disordered states in the highly frustrated spin-1/2 Ising-Heisenberg model on triangles-in-triangles lattices
Creators: name: Cisarova, Jana
name: Strecka, Jozef
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Ground state and thermodynamics of geometrically frustrated spin-1/2 Ising-Heisenberg model on two different but topologically related triangles-in-triangles lattices is investigated in particular. A rigorous mapping based on generalized star-triangle transformations enables one to derive exact analytical results for the free and internal energy, spontaneous magnetization, entropy and specific heat from the known exact results for the corresponding spin-1/2 Ising model on a triangular lattice. It is demonstrated that several unconventional quantum ordered and disordered phases may become the ground state in addition to the classical ferromagnetic phase with a perfect alignment of all constituent spins. A mutual competition between the ferromagnetic Ising and XXZ Heisenberg interactions may lead to an appearance of a peculiar quantum ferromagnetic phase, in which the magnetic moment of the Heisenberg spins undergoes a quantum reduction to one third of the saturation value in contrast with the fully saturated magnetic moment of the classical Ising spins. In the highly frustrated regime, we have found either the disordered quantum paramagnetic phase with the substantial residual entropy or a similar but strikingly spontaneously long-range ordered phase, in which a quantum reduction of the magnetic moment of the Heisenberg spins causes a small quantum reduction of the magnetic moment of otherwise purely classical Ising spins. It is evidenced that the specific heat exhibits diverse thermal dependences with or without a logarithmic divergence superimposed either on one or two round Schottky-type maxima.
description: 16 pages, 13 figures