cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Impedance-matched microwave lens
Creators: name: Alitalo, Pekka
name: Luukkonen, Olli
name: Vehmas, Joni
name: Tretyakov, Sergei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A microwave lens with highly reduced reflectance, as compared to conventional dielectric lenses, is proposed. The lens is based on two-dimensional or three-dimensional transmission-line networks that can be designed to have an effective refractive index larger than one, while having almost perfect impedance matching with free space. The design principles are presented and an example lens is studied using commercial simulation software.
description: 11 pages, 8 figures
Tetra- and penta-quark structures in the constituent quark model
Creators: name: Yang, Gang
name: Ping, Jialun
name: Segovia, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: With the development of high energy physics experiments, a large amount of exotic states in the hadronic sector have been observed. In order to shed some insights on the nature of the tetraquark and pentaquark candidates, a constituent quark model, along with the gaussian expansion method, has been employed systematically in the real- and complex-range investigations. We review herein the double- and full-heavy tetraquarks, but also the hidden-charm, -bottom and doubly charmed pentaquarks. Several experimentally observed exotic hadrons are well reproduced within our approach; moreover, their possible compositeness are suggested and other properties analyzed accordingly such as their decay widths and general patterns in the spectrum. Besides, we report also some predictions not yet seen by experiment within the studied tetraquark and pentaquark sectors.
description: Invited review paper to be submitted to Symmetry Journal, special issue "Advances in Chiral Quark Models". 92 pages, 30 figures, 66 tables
title: On stochastic differential games with impulse controls and applications
Creators: name: De Santis, Davide
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2020

description: The thesis explores general stochastic differential games involving impulse controls and ultimately investigates competition in dealer markets. The work begins with the first chapter on general non-zero stochastic differential games between an impulse controller and a stopper, providing the first model of such class of games using impulse controls. Nash equilibria are characterised through a verification theorem, which identifies a new system of quasi-variational inequalities whose solution gives equilibrium payoffs with the correspondent strategies. Then, in order to show how the verification theorem is meant to be applied, an example is shown and two different types of Nash equilibrium are fully characterised. To conclude, some numerical results describing the qualitative properties of both types of equilibrium are provided. The dissertation continues with the second chapter on general zero-sum stochastic differential games with impulse controls. Here, two agents play feedback impulse control strategies instead of strategies defined in an Elliot-Kalton fashion, as commonly done in the literature, and are not allowed to apply impulses simultaneously, resulting in the upper value and lower value functions of the game being naturally associated with the cases in which either player has priority. The main objective is to apply the stochastic Perron's method in order to have the game value function as the viscosity solution to the double obstacle partial differential equation arising from the problem after a viscosity comparison result. The third and final chapter is about the study of competition in dealer markets. The setting consists in two dealers trading at discrete times via market orders with price impact, resulting in one of the first nonzero-sum game with impulse controls applied to optimal trading. Similarly to the first chapter, a verification theorem identifying the system of quasi-variational inequalities providing the equilibrium payoff functions and strategies is given. Furthermore, a framework to look for equilibria where both players apply impulses simultaneously is introduced. This is very important as it is not possible to find equilibria when only one dealer trades at a time, whereas there exists at least a Nash equilibrium when both dealers trade simultaneously.
Conformal-invariance of 2D quantum turbulence in an exciton-polariton fluid of light
Creators: name: Panico, Riccardo
name: Lanotte, Alessandra S.
name: Trypogeorgos, Dimitrios
name: Gigli, Giuseppe
name: De Giorgi, Milena
name: Sanvitto, Daniele
name: Ballarini, Dario
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The similarities of quantum turbulence with classical hydrodynamics allow quantum fluids to provide essential models of their classical analogue, paving the way for fundamental advances in physics and technology. Recently, experiments on 2D quantum turbulence observed the clustering of same-sign vortices in strong analogy with the inverse energy cascade of classical fluids. However, self-similarity of the turbulent flow, a fundamental concept in the study of classical turbulence, has so far remained largely unexplored in quantum systems. Here, thanks to the unique features of exciton-polaritons, we measure the scale invariance of velocity circulations and show that the cascade process follows the universal scaling of critical phenomena in 2D. We demonstrate this behaviour from the statistical analysis of the experimentally measured incompressible velocity field and the microscopic imaging of the quantum fluid. These results can find wide application in both quantum and classical 2D turbulence.
Leporinus obtusidens
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Anostomidae
Leporinus
Leporinus obtusidens

description: M. obtusidens (Valenciennes, 1837)
new combination from Leporinus info
published in Ramirez et al. (2017)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 2, DOI: 10.5281/zenodo.11558471
Hyphessobrycon igneus Miquelarena, Menni, Lopez & Casciotta 1980
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Hyphessobrycon
Hyphessobrycon igneus

description: H. igneus Miquelarena, Menni, López & Casciotta, 1980
first record from Uruguay info
published in Serra et al. (2014) sub Hyphessobrycon aff. igneus
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
Hyphessobrycon togoi Miquelarena & Lopez 2006
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Hyphessobrycon
Hyphessobrycon togoi

description: H. togoi Miquelarena & López, 2006
first record from Uruguay info
published in Serra et al. (2014)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
Highly dispersive photonic band-gap-edge optofluidic biosensors
Creators: name: Xiao, Sanshui
name: Mortensen, Niels Asger
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Highly dispersive photonic band-gap-edge optofluidic biosensors are studied theoretically. We demonstrate that these structures are strongly sensitive to the refractive index of the liquid, which is used to tune dispersion of the photonic crystal. The upper frequency band-gap edge shifts about 1.8 nm for dn=0.002, which is quite sensitive. Results from transmission spectra agree well with those obtained from the band structure theory.
description: 12 pages including 7 figures
GMRES on singular systems revisited
Creators: name: Hayami, Ken
name: Sugihara, Kota
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.1.3
subject: 65F10

description: In [Hayami K, Sugihara M. Numer Linear Algebra Appl. 2011; 18:449--469], the authors analyzed the convergence behaviour of the Generalized Minimal Residual (GMRES) method for the least squares problem $ \min_{ {\bf x} \in {\bf R}^n} {\| {\bf b} - A {\bf x} \|_2}^2$, where $ A \in {\bf R}^{n \times n}$ may be singular and $ {\bf b} \in {\bf R}^n$, by decomposing the algorithm into the range $ {\cal R}(A) $ and its orthogonal complement $ {\cal R}(A)^\perp $ components. However, we found that the proof of the fact that GMRES gives a least squares solution if $ {\cal R}(A) = {\cal R}(A^{\scriptsize T} ) $ was not complete. In this paper, we will give a complete proof.
description: 13 pages (A sentence added in p.10, line 13
Failed and delayed protostellar outflows with high mass accretion rates
Creators: name: Machida, Masahiro N.
name: Hosokawa, Takashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The evolution of protostellar outflows is investigated under different mass accretion rates in the range $\sim10^{-5}-10^{-2} {\rm M}_\odot$ yr$^{-1}$ with three-dimensional magnetohydrodynamic simulations. A powerful outflow always appears in strongly magnetized clouds with $B_0 \gtrsim B_{\rm 0, cr}$ $=10^{-4} (M_{\rm cl}/100 {\rm M}_\odot){\rm G}$, where $M_{\rm cl}$ is the cloud mass. When a cloud has a weaker magnetic field, the outflow does not evolve promptly with a high mass accretion rate. In some cases with moderate magnetic fields $B_0$ slightly smaller than $B_{\rm 0,cr}$, the outflow growth is suppressed or delayed until the infalling envelope dissipates and the ram pressure around the protostellar system is significantly reduced. In such an environment, the outflow begins to grow and reaches a large distance only during the late accretion phase. On the other hand, the protostellar outflow fails to evolve and is finally collapsed by the strong ram pressure when a massive $(\gtrsim 100 {\rm M}_\odot)$ initial cloud is weakly magnetized with $B_0 \lesssim 100 μ{\rm G}$. The failed outflow creates a toroidal structure that is supported by magnetic pressure and encloses the protostar and disk system. Our results indicate that high-mass stars form only in strongly magnetized clouds, if all high-mass protostars possess a clear outflow. If we would observe either very weak or no outflow around evolved protostars, it means that strong magnetic fields are not necessarily required for high-mass star formation. In any case, we can constrain the high-mass star formation process from observations of outflows.
description: Accepted for publication in MNRAS
Soundly Handling Linearity
Creators: name: Tang, Wenhao
name: Hillerström, Daniel
name: Lindley, Sam
name: Morris, J. Garrett
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: We propose a novel approach to soundly combining linear types with effect handlers. Linear type systems statically ensure that resources such as file handles are used exactly once. Effect handlers provide a modular programming abstraction for implementing features ranging from exceptions to concurrency. Whereas linear type systems bake in the assumption that continuations are invoked exactly once, effect handlers allow continuations to be discarded or invoked more than once. This mismatch leads to soundness bugs in existing systems such as the programming language Links, which combines linearity (for session types) with effect handlers. We introduce control flow linearity as a means to ensure that continuations are used in accordance with the linearity of any resources they capture, ruling out such soundness bugs.
 We formalise control flow linearity in a System F-style core calculus Feffpop equipped with linear types, effect types, and effect handlers. We define a linearity-aware semantics to formally prove that Feffpop preserves the integrity of linear values in the sense that no linear value is discarded or duplicated. In order to show that control flow linearity can be made practical, we adapt Links based on the design of Feffpop, in doing so fixing a long-standing soundness bug.
 Finally, to better expose the potential of control flow linearity, we define an ML-style core calculus Qeffpop, based on qualified types, which requires no programmer provided annotations, and instead relies entirely on type inference to infer control flow linearity. Both linearity and effects are captured by qualified types. Qeffpop overcomes a number of practical limitations of Feffpop, supporting abstraction over linearity, linearity dependencies between type variables, and a much more fine-grained notion of control flow linearity.
description: 51 pages, accepted for POPL 2024
Capillary interactions between soft capsules protruding through thin fluid films
Creators: name: Wouters, Maarten
name: Aouane, Othmane
name: Sega, Marcello
name: Harting, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: When a suspension dries, the suspending fluid evaporates, leaving behind a dry film composed of the suspended particles. During the final stages of drying, the height of the fluid film on the substrate drops below the particle size, inducing local interface deformations that lead to strong capillary interactions among the particles. Although capillary interactions between rigid particles are well studied, much is still to be understood about the behaviour of soft particles and the role of their softness during the final stages of film drying. Here, we use our recently-introduced numerical method that couples a fluid described using the lattice Boltzmann approach to a finite element description of deformable objects to investigate the drying process of a film with suspended soft particles. Our measured menisci deformations and lateral capillary forces, which agree well with previous theoretical and experimental works in case of rigid particles, show the deformations become smaller with increasing particles softness, resulting in weaker lateral interaction forces. At large interparticle distances, the force approaches that of rigid particles. Finally, we investigate the time dependent formation of particle clusters at the late stages of the film drying.
Strong coupling between single photons in semiconductor microcavities
Creators: name: Irvine, William T. M.
name: Hennessy, Kevin
name: Bouwmeester, Dirk
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the observability of strong coupling between single photons in semiconductor microcavities coupled by a chi(2) nonlinearity. We present two schemes and analyze the feasibility of their practical implementation in three systems: photonic crystal defects, micropillars and microdisks, fabricated out of GaAs. We show that if a weak coherent state is used to enhance the chi(2) interaction, the strong coupling regime between two modes at different frequencies occupied by a single photon is within reach of current technology. The unstimulated strong coupling of a single photon and a photon pair is very challenging and will require an improvement in mirocavity quality factors of 2-4 orders of magnitude to be observable.
description: 4 pages
T-duality and the exotic chiral de Rham complex
Creators: name: Linshaw, Andrew
name: Mathai, Varghese
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $Z$ be a principal circle bundle over a base manifold $M$ equipped with an integral closed $3$-form $H$ called the flux. Let $\widehat{Z}$ be the T-dual circle bundle over $M$ with flux $\widehat{H}$. Han and Mathai recently constructed the $\mathbb{Z}_2$-graded space of exotic differential forms $\mathcal{A}^{\bar{k}}(\widehat{Z})$. It has an additional $\mathbb{Z}$-grading such that the degree zero component coincides with the space of invariant twisted differential forms $Ω^{\bar{k}}(\widehat{Z}, \widehat{H})^{\widehat{\mathbb{T}}}$, and it admits a differential that extends the twisted differential $d_{\widehat{H}} = d + \widehat{H}$. The T-duality isomorphism $Ω^{\bar{k}}(Z,H)^{\mathbb{T}} \rightarrow Ω^{\overline{k+1}}(\widehat{Z}, \widehat{H})^{\widehat{\mathbb{T}}}$ of Bouwknegt, Evslin and Mathai extends to an isomorphism $Ω^{\bar{k}}(Z,H) \rightarrow \mathcal{A}^{\overline{k+1}}(\widehat{Z})$. In this paper, we introduce the exotic chiral de Rham complex $\mathcal{A}^{\text{ch},\widehat{H},\bar{k}}(\widehat{Z})$ which contains $\mathcal{A}^{\bar{k}}(\widehat{Z})$ as the weight zero subcomplex. We give an isomorphism $Ω^{\text{ch},H,\bar{k}}(Z) \rightarrow \mathcal{A}^{\text{ch},\widehat{H},\overline{k+1}}(\widehat{Z})$ where $Ω^{\text{ch},H,\bar{k}}(Z)$ denotes the twisted chiral de Rham complex of $Z$, which chiralizes the above T-duality map.
description: Minor corrections and expository improvements, to appear in Comm. Math. Phys
Deuterodon luetkenii
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Deuterodon
Deuterodon luetkenii

description: D. luetkenii (Boulenger, 1887)
new combination from Hyphessobrycon info
published in Terán et al. (2020)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
A versatile unitary transformation framework for an optimal bath construction in density-matrix based quantum embedding approaches
Creators: name: Marécat, Quentin
name: Saubanère, Matthieu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The performance of embedding methods is directly tied to the quality of the bath orbitals construction. In this paper, we develop a versatile framework, enabling the investigation of the optimal construction of the orbitals of the bath. As of today, in state-of-the-art embedding methods, the orbitals of the bath are constructed by performing a Singular Value Decomposition (SVD) on the impurity-environment part of the 1RDM, as originally presented in Density Matrix Embedding Theory (DMET). Recently, the equivalence between the SVD protocol and the use of unitary transformation, the so-called Block-Householder transformation, has been established. We present a generalization of the Block-Householder transformation by introducing additional flexible parameters. The additional parameters are optimized such that the bath-orbitals fulfill physically motivated constrains. The efficiency of the approach is discussed and exemplified in the context of the half-filled Hubbard model in one-dimension.
description: 11 pages, 9 figures
Deuterodon taeniatus
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Deuterodon
Deuterodon taeniatus

description: D. taeniatus (Jenyns, 1842)
new combination from Astyanax info
published in Terán et al. (2020)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
The Impact of The IGM on High-Redshift Lyman Alpha Emission Lines
Creators: name: Dijkstra, Mark
name: Lidz, Adam
name: Wyithe, Stuart
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the impact of the intergalactic medium (IGM) on the observed Lyman alpha lines (hereafter Lya) emitted by galaxies in an ionised IGM at z>4. Our model accounts for gas clumping in the IGM and for the fact that high-redshift galaxies reside in overdense regions, which causes the velocity field of the IGM to depart from the Hubble flow. The observed shape of the Lya line varies widely, with dependence on the intrinsic width and systemic velocity of the line, a galaxies star formation rate and the local extra-galactic UV-background. For large star formation rates and levels of the UV-background, absorption in the IGM does not result in a Lya line that is asymmetric as is common among known high-redshift Lya emitters. For models in which the lines do show the observed strong asymmetry, the IGM typically transmits only 10-30% of the Lya flux. The increase in the ionising background that accompanied the completion of reionisation barely increased the IGM transmission, which suggests that LAEs of comparable luminosity should not appear to be significantly dimmer prior to overlap. In this light, we briefly discuss the potential of Lya emitters as a probe into the epoch of reionisation.
description: 14 pages, 8 figures, MNRAS in press, minor changes, references added, some typos fixed
NFDI4BioDiversity - The NFDI consortium for Biodiversity, Ecology & Environmental Data
Creators: name: Weber, Judith
name: Glöckner, Frank Oliver
Publisher: name: Zenodo
Year: 2020
Subjects: Forschungsdatenmanagement
FDM
HeFDI - Hessische Forschungsdateninfrastrukturen
NFDI
NFDI4Biodiversity
HeFDI Plenary 2020

description: Poster about the NFDI4BioDiversity consortium, presented at the HeFDI Plenary 2020.
Particle production during Inflation with a non-minimally coupled spectator scalar field
Creators: name: Yu, Zhe
name: Fu, Chengjie
name: Guo, Zong-Kuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the inflationary model with a spectator scalar field $χ$ coupled to both the inflaton and Ricci scalar. The interaction between the $χ$ field and the gravity, denoted by $ξRχ^2$, can trigger the tachyonic instability of certain modes of the $χ$ field. As a result, the $χ$ field perturbations are amplified and serve as a gravitational wave (GW) source. When considering the backreaction of the $χ$ field, an upper bound on the coupling parameter $ξ$ must be imposed to ensure that inflation does not end prematurely. In this case, we find that the inflaton's evolution experiences a sudden slowdown due to the production of $χ$ particles, resulting in a unique oscillating structure in the power spectrum of curvature perturbations at specific scales. Moreover, the GW signal induced by the $χ$ field is more significant than primordial GWs at around its peak scale, leading to a noticeable bump in the overall energy spectrum of GWs. It's worth noting that this bump predicted in the slow-roll inflationary scenario is unlikely to be detected by LISA and Taiji, but there is a slim chance it might approach the detection limits of GW experiments like BBO and SKA if we devise distinctive inflatonary potentials.
Expanding Explainability: Towards Social Transparency in AI systems
Creators: name: Ehsan, Upol
name: Liao, Q. Vera
name: Muller, Michael
name: Riedl, Mark O.
name: Weisz, Justin D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: As AI-powered systems increasingly mediate consequential decision-making, their explainability is critical for end-users to take informed and accountable actions. Explanations in human-human interactions are socially-situated. AI systems are often socio-organizationally embedded. However, Explainable AI (XAI) approaches have been predominantly algorithm-centered. We take a developmental step towards socially-situated XAI by introducing and exploring Social Transparency (ST), a sociotechnically informed perspective that incorporates the socio-organizational context into explaining AI-mediated decision-making. To explore ST conceptually, we conducted interviews with 29 AI users and practitioners grounded in a speculative design scenario. We suggested constitutive design elements of ST and developed a conceptual framework to unpack ST's effect and implications at the technical, decision-making, and organizational level. The framework showcases how ST can potentially calibrate trust in AI, improve decision-making, facilitate organizational collective actions, and cultivate holistic explainability. Our work contributes to the discourse of Human-Centered XAI by expanding the design space of XAI.
description: Accepted to CHI2021
On mode conversion and wave reflection in magnetic Ap stars
Creators: name: Sousa, S. G.
name: Cunha, M. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the effect of a strong large scale magnetic field on the reflection of high frequency acoustic modes in rapidly oscillating Ap stars. To that end we consider a toy model composed of an isothermal atmosphere matched onto a polytropic interior and determine the numerical solution to the set of ideal magneto-hydrodynamic equations in a local plane-parallel approximation with constant gravity. Using the numerical solution in combination with approximate analytical solutions that are valid in the limits where the magnetic and acoustic components are decoupled, we calculate the relative fraction of energy flux that is carried away in each oscillation cycle by running acoustic waves in the atmosphere and running magnetic waves in the interior. For oscillation frequencies above the acoustic cutoff we show that most energy losses associated with the presence of running waves occur in regions where the magnetic field is close to vertical. Moreover, by considering the depth dependence of the energy associated with the magnetic component of the wave in the atmosphere we show that a fraction of the wave energy is kept in the oscillation every cycle. For frequencies above the acoustic cutoff frequency such energy is concentrated in regions where the magnetic field is significantly inclined in relation to the local vertical. Even though our calculations were aimed at studying oscillations with frequencies above the acoustic cutoff frequency, based on our results we discuss what results may be expected for oscillations of lower frequency.
description: 13 pages, 12 figures, accepted for publication in MNRAS
Distances of groups of prime order
Creators: name: Vojtěchovský, Petr
Publisher: name: arXiv
Year: 2007
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20K01

description: Given two finite groups G(.), G(*) defined on the same set G, their distance is the number of pairs (x,y) for which x.y and x*y differ. The Cayley stability of a group G(.) is the minimum distance of G(.) from another group defined on G. We show that the Cayley stability of the cyclic group of prime order p is 6p-18, for every p>7.
description: 7 pages
Visual Validation versus Visual Estimation: A Study on the Average Value in Scatterplots
Creators: name: Braun, Daniel
name: Suh, Ashley
name: Chang, Remco
name: Gleicher, Michael
name: von Landesberger, Tatiana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We investigate the ability of individuals to visually validate statistical models in terms of their fit to the data. While visual model estimation has been studied extensively, visual model validation remains under-investigated. It is unknown how well people are able to visually validate models, and how their performance compares to visual and computational estimation. As a starting point, we conducted a study across two populations (crowdsourced and volunteers). Participants had to both visually estimate (i.e, draw) and visually validate (i.e., accept or reject) the frequently studied model of averages. Across both populations, the level of accuracy of the models that were considered valid was lower than the accuracy of the estimated models. We find that participants' validation and estimation were unbiased. Moreover, their natural critical point between accepting and rejecting a given mean value is close to the boundary of its 95% confidence interval, indicating that the visually perceived confidence interval corresponds to a common statistical standard. Our work contributes to the understanding of visual model validation and opens new research opportunities.
description: Preprint and Author Version of a Short Paper, accepted to the 2023 IEEE Visualization Conference (VIS)
Andromakhe saguazu
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Andromakhe
Andromakhe saguazu

description: A. saguazu (Casciotta, Almirón & Azpelicueta, 2003)
new combination from Astyanax info
published in Terán et al. (2020)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
Proper Matter Collineations of Plane Symmetric Spacetimes
Creators: name: Sharif, M.
name: Ismaeel, Tariq
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate matter collineations of plane symmetric spacetimes when the energy-momentum tensor is degenerate. There exists three interesting cases where the group of matter collineations is finite-dimensional. The matter collineations in these cases are either four, six or ten in which four are isometries and the rest are proper.
description: 10 pages, LaTex, accepted for publication in Modern Physics Letters A
Distribution of methanol and cyclopropenylidene around starless cores
Creators: name: Spezzano, S.
name: Caselli, P.
name: Pineda, J. E.
name: Bizzocchi, L.
name: Prudenzano, D.
name: Nagy, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. The spatial distribution of molecules around starless cores is a powerful tool for studying the physics and chemistry governing the earliest stages of star formation. Aims. Our aim is to study the chemical differentiation in starless cores to determine the influence of large-scale effects on the spatial distribution of molecules within the cores. Furthermore, we want to put observational constraints on the mechanisms responsible in starless cores for the desorption of methanol from the surface of dust grains where it is efficiently produced. Methods. We mapped methanol, CH3OH, and cyclopropenylidene, c-C3H2, with the IRAM 30m telescope in the 3 mm band towards six starless cores embedded in different environments, and in different evolutionary stages. Furthermore, we searched for correlations among physical properties of the cores and the methanol distribution. Results. From our maps we can infer that the chemical segregation between CH3OH and c-C3H2 is driven by uneven illumination from the interstellar radiation field (ISRF). The side of the core that is more illuminated has more C atoms in the gas-phase and the formation of carbon-chain molecules like c-C3H2 is enhanced. Instead, on the side that is less exposed to the ISRF the C atoms are mostly locked in carbon monoxide, CO, the precursor of methanol. Conclusions. We conclude that large-scale effects have a direct impact on the chemical segregation that we can observe at core scale. However, the non-thermal mechanisms responsible for the desorption of methanol in starless cores do not show any dependency on the H2 column density at the methanol peak.
description: Accepted for publication in A&A
Fano effect and Kondo effect in quantum dots formed in strongly coupled quantum wells
Creators: name: Rushforth, A. W.
name: Smith, C. G.
name: Farrer, I.
name: Ritchie, D. A.
name: Jones, G. A. C.
name: Anderson, D.
name: Pepper, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present lateral transport measurements on strongly, vertically coupled quantum dots formed in separate quantum wells in a GaAs/AlGaAs heterostructure. Coulomb oscillations are observed forming a honeycomb lattice consistent with two strongly coupled dots. When the tunnel barriers in the upper well are reduced we observe the Fano effect due to the interfering paths through a resonant state in the lower well and a continuum state in the upper well. In both regimes an in plane magnetic field reduces the coupling between the wells when the magnetic length is comparable to the center to center separation of the wells. We also observe the Kondo effect which allows the spin states of the double dot system to be probed.
description: 4 pages, 5 figures
CRC-TR 211 Data Management Project Z02 Software Development Center
Creators: name: Elfner, Hannah
name: Schmidt, Christian
name: Staudenmaier, Jan
Publisher: name: Zenodo
Year: 2020
Subjects: Forschungsdatenmanagement
FDM
HeFDI - Hessische Forschungsdateninfrastrukturen
Deutsche Forschungsgemeinschaft (DFG)
data management
data management policy

description: Poster about the data management at CRC-TR-211 “Strong-interaction matter under extreme conditions”, presented at the HeFDI Plenary 2020.
Astyanax stenohalina
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Astyanax
Astyanax stenohalina

description: A. stenohalina (Messner, 1962)
new combination from Astyanax info
published in Terán et al. (2020)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
Diffusive variance for a tagged particle in $d\leq 2$ asymmetric simple exclusion
Creators: name: Sethuraman, Sunder
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 60F05

description: We study the equilibrium fluctuations of a tagged particle in finite-range simple exclusion processes on Z^d with biased single particle jump rates. It is known the variance of the tagged particle at time t is diffusive, that is on order O(t), in d\geq 3, and in d=1 when in addition the jump rate is nearest-neighbor, and moreover, in these cases, central limit theorems in diffusive scale have been proved. In this article, we give some partial results in the open cases in d\leq 2. Namely, we show diffusivity of the tagged particle variance at time t in the sense of some upper and lower bounds on order O(t) in d=2, and also in d=1 when in addition the jump rate is not nearest-neighbor. Also, a characterization of the tagged particle variance is given. The main methods are in analyzing H_{-1} norm variational inequalities.
description: Published in ALEA 1, 305-332 (2006)
Pressure-Temperature Phase Diagram of Multiferroic $Ni_3V_2O_8$
Creators: name: Chaudhury, R. P.
name: Yen, F.
name: Cruz, C. R. dela
name: Lorenz, B.
name: Wang, Y. Q.
name: Sun, Y. Y.
name: Chu, C. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The pressure-temperature phase diagram of multiferroic $Ni_3V_2O_8$ is investigated for hydrostatic pressures up to 2 GPa. The stability range of the ferroelectric phase associated with the incommensurate helical spin order is reduced by pressure and ferroelectricity is completely suppressed at the critical pressure of 1.64 GPa at 6.2 K. Thermal expansion measurements at ambient pressure show strong step-like anomalies of the lattice parameters associated with the lock-in transition into the commensurate paraelectric phase. The expansion anomalies are highly anisotropic, the related volume change is consistent with the high-pressure phase diagram.
L'Influence des Nouvelles Technologies sur l'Audit Financier : Vers des Pratiques Innovantes et Durables
Creators: name: TALAI Kenza
name: KARIMI Dounia
Publisher: name: Zenodo
Year: 2024

description: Dans un contexte où la transparence et le développement durable sont devenus des impératifs pour les entreprises, l'audit financier se trouve à la croisée des chemins, évoluant vers des pratiques plus responsables et alignées sur ces nouvelles exigences. Notre recherche se penche sur l'impact crucial de l'intégration des nouvelles technologies dans ce domaine, mettant en lumière les opportunités qu'elles offrent pour transformer les pratiques d'audit traditionnelles.L'audit financier, en élargissant son périmètre d'action, joue un rôle essentiel dans l'évaluation de la performance globale des organisations, y compris leurs engagements en matière de durabilité et de responsabilité sociale. Les technologies émergentes, telles que l'intelligence artificielle et la blockchain, révolutionnent ces pratiques en fournissant des outils plus puissants pour collecter, analyser, et présenter les données financières, tout en réduisant l'empreinte écologique de ces activités.Dans cette optique, notre travail explore l'impact des nouvelles technologies sur l'audit financier en deux parties. La première est une revue de littérature qui analyse les technologies émergentes comme l'intelligence artificielle et la blockchain, et leur influence sur les pratiques d'audit. La seconde est une étude empirique reposant sur une approche mixte, pour recueillir des données du milieu professionnel, permettant de comparer les observations pratiques aux théories établies. Cette approche combinée offre une compréhension approfondie des opportunités et des défis liés à l'intégration de ces technologies dans l'audit financier.
A Nonlinear Damped Metamaterial: Wideband Attenuation with Nonlinear Bandgap and Modal Dissipation
Creators: name: Zhao, Bao
name: Thomsen, Henrik R.
name: Pu, Xingbo
name: Fang, Shitong
name: Lai, Zhihui
name: Van Damme, Bart
name: Bergamini, Andrea
name: Chatzi, Eleni
name: Colombi, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this paper, we incorporate the effect of nonlinear damping with the concept of locally resonant metamaterials to enable vibration attenuation beyond the conventional bandgap range. The proposed design combines a linear host cantilever beam and periodically distributed inertia amplifiers as nonlinear local resonators. The geometric nonlinearity induced by the inertia amplifiers causes an amplitude-dependent nonlinear damping effect. Through the implementation of both modal superposition and numerical harmonic methods the finite nonlinear metamaterial is accurately modelled. The resulting nonlinear frequency response reveals the bandgap is both amplitude-dependent and broadened. Furthermore, the modal frequencies are also attenuated due to the nonlinear damping effect. The theoretical results are validated experimentally. By embedding the nonlinear damping effect into locally resonant metamaterials, wideband attenuation of the proposed metamaterial is achieved, which opens new possibilities for versatile metamaterials beyond the limit of their linear counterparts.
Magnetized static black Saturn
Creators: name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a new static solution to the 5D Einstein-Maxwell equations describing a static black hole surrounded by a non-rotating dipole black ring. The configuration is kept in equilibrium by an external magnetic field interacting with the dipole charge of the black ring. The properties of the black Saturn-like configuration are studied and the basic physical quantities are calculated. The solution demonstrates 2-fold continuous non-uniqueness of the 5D magnetized static neutral black objects for fixed total mass and Melvin background.
description: LaTex, 9 pages
Astyanax lacustris
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Astyanax
Astyanax lacustris

description: A. lacustris (Lütken, 1875)
A. asuncionensis and jacuhiensis are a jr. synonyms
published in Lucena & Soares (2016)
original Tetragonopterus lacustris
synonyms Astyanax altiparanae Garutti & Britski, 2000
A. bimaculatus asuncionensis Géry, 1972 info
A. bimaculatus paraguayensis Eigenm., 1921
Tetragonopterus jacuhiensis Cope, 1894 info
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
A study on the effects of air gaps, air velocities and fan revolutions on the drying characteristics of western hemlock baby squares
Creators: name: Li, Min
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to explore whether or not vertical air gaps, air velocities, and fan revolutions had any effect on drying characteristics of 105 by 105 mm in cross-section western hemlock baby squares. Western hemlock squares at different lengths are widely used in Japan for housing construction. Today, about 95% of the baby squares are shipped to Japan in green condition. However, the demand for dried baby squares has been recently increased. Baby squares need about eight days to dry with a conventional drying schedule. Not only is the drying cycle long, but honeycomb, checking, splitting and uneven final moisture content distribution are often found among the dried lumber pieces. Therefore, finding an optimum method to dry baby squares, which will result in less degrade and more uniform final moisture content distribution is imperative. In this research project, stacking lumber with 10 mm and 20 mm vertical air gaps and two fan revolutions levels, namely, 620 rpm and 1220 rpm, was carried out on 105 by 105 by 890 mm long western hemlock lumber using a conventional drying schedule. The research results showed that vertical air gaps can increase lumber drying rate of baby squares especially when the average moisture content is above the fibre saturation point. Higher fan revolutions or air velocities can reduce drying times when lumber is stacked with vertical air gaps. The vertical air gaps, fan revolutions and air velocities do not affect moisture content differences between core and shell, shrinkage percentages, quality and drying stresses of baby squares
Oligosarcus robustus Menezes 1969
Creators: name: Koerber, Stefan
name: Litz, Thomas O.
name: Serra, Wilson S.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Oligosarcus
Oligosarcus robustus

description: O. robustus Menezes, 1969
first record from Uruguay info
published in Serra et al. (2021)
description: Published as part of Koerber, Stefan, Litz, Thomas O. & Serra, Wilson S., 2023, CLOFFUY - update 5 - supplement to Checklist of the Freshwater Fishes of Uruguay., pp. 1-13 in Ichthyological Contributions of PecesCriollos 83 on page 3, DOI: 10.5281/zenodo.11558471
The McDonald Accelerating Stars Survey (MASS): White Dwarf Companions Accelerating the Sun-like Stars 12 Psc and HD 159062
Creators: name: Bowler, Brendan P.
name: Cochran, William D.
name: Endl, Michael
name: Franson, Kyle
name: Brandt, Timothy D.
name: Dupuy, Trent J.
name: MacQueen, Phillip J.
name: Kratter, Kaitlin M.
name: Mawet, Dimitri
name: Ruane, Garreth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the discovery of a white dwarf companion to the G1 V star 12 Psc found as part of a Keck adaptive optics imaging survey of long-term accelerating stars from the McDonald Observatory Planet Search Program. Twenty years of precise radial-velocity monitoring of 12 Psc with the Tull Spectrograph at the Harlan J. Smith telescope reveals a moderate radial acceleration ($\approx$10 m s$^{-1}$ yr $^{-1}$), which together with relative astrometry from Keck/NIRC2 and the astrometric acceleration between $Hipparcos$ and $Gaia$ DR2 yields a dynamical mass of $M_B$ = 0.605$^{+0.021}_{-0.022}$ $M_{\odot}$ for 12 Psc B, a semi-major axis of 40$^{+2}_{-4}$ AU, and an eccentricity of 0.84$\pm$0.08. We also report an updated orbit fit of the white dwarf companion to the metal-poor (but barium-rich) G9 V dwarf HD 159062 based on new radial velocity observations from the High-Resolution Spectrograph at the Hobby-Eberly Telescope and astrometry from Keck/NIRC2. A joint fit of the available relative astrometry, radial velocities, and tangential astrometric acceleration yields a dynamical mass of $M_B$ = 0.609$^{+0.010}_{-0.011}$ $M_{\odot}$ for HD 159062 B, a semi-major axis of 60$^{+5}_{-7}$ AU, and preference for circular orbits ($e$$
description: Accepted to AJ
Random quench predicts universal properties of amorphous solids
Creators: name: Shimada, Masanari
name: De Giuli, Eric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Amorphous solids display numerous universal features in their mechanics, structure, and response. Current models assume heterogeneity in mesoscale elastic properties, but require fine-tuning in order to quantitatively explain vibrational properties. A complete model should derive the magnitude and character of elastic heterogeneity from an initially structureless medium, through a model of the quenching process during which the temperature is rapidly lowered and the solid is formed. Here we propose a field-theoretic model of a quench, and compute structural, mechanical, and vibrational observables in arbitrary dimension $d$. This allows us to relate the properties of the amorphous solid to those of the initial medium, and to those of the quench. We show that previous mean-field results are subsumed by our analysis and unify spatial fluctuations of elastic moduli, long-range correlations of inherent state stress, universal vibrational anomalies, and localized modes into one picture.
description: 19 pages, 3 figures, submission to SciPost