cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Separating Words from Every Start State with Horner Automata
Creators: name: Tran, Nicholas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We show that a well-known family of deterministic finite automata can be used to distinguish distinct binary strings of the same length from every start state. Further, we establish almost matching lower and upper bounds on the number of states of such automata necessary to achieve this type of separation. Our result improves the currently best known linear upper bound for arbitrary DFA.
description: In Proceedings AFL 2023, arXiv:2309.01126
title: Φυσιολογικές ανταποκρίσεις στα 400 μέτρα ελεύθερο ακολουθώντας προπορευόμενο αθλητή
titleType: AlternativeTitle
Creators: name: Δαδούκη, Ελένη
Publisher: name: University of Thessaly
Year: 2007
Subjects: subject: ΚΟΛΥΜΒΗΣΗ
subject: ΑΣΚΗΣΗ -- ΦΥΣΙΟΛΟΓΙΑ

description: Σκοπός της μελέτης είναι να εξετάσει τις μεταβολικές και καρδιακές ανταποκρίσεις σε μέγιστη προσπάθεια κολύμβησης ακολουθώντας προπορευόμενο αθλητή. Έντεκα (η= 11) προπονημένοι κολυμβητές και κολυμβήτριες ηλικίας 14.4±0.5 ετών κολύμπησαν 400m ελεύθερο με μέγιστη ένταση μόνοι τους (ΧΠ), ακριβώς πίσω στην ίδια διαδρομή (ΙΔ) και δίπλα από προπορευόμενο σε διπλανή διαδρομή κολυμβητή (ΔΔ). Η συγκέντρωση γαλακτικού, ο δείκτης υποκειμενικής κόπωσης, η καρδιακή συχνότητα, το μήκος και η συχνότητα χεριάς δεν διέφεραν μεταξύ των δοκιμασιών (ρ>.05). Η απόδοση των αθλητών ήταν βελτιωμένη στην ΙΔ συγκριτικά με την ΧΠ και ΔΔ δοκιμασία (ΧΠ: 337.15±29.60, ΔΔ: 340.40±25.90, ΙΔ: 330.56±23.71s, ρ
Attuazione in Italia delle norme di contrasto alle frodi lesive degli interessi finanziari dell’Unione e responsabilità da reato degli enti: qualche riflessione
Creators: name: Sommella, Matteo
Publisher: name: Universita' degli Studi di Salerno
Year: 2020
Subjects: PIF Directive
Tax crimes
Serious VAT frauds
Judicial cooperation
Corporate liability

description: The present paper, after an overview of the main provisions of the PIF Directive and some European Union bodies involved in its implementation, focuses on the issue of corporate liability arising from tax crimes. On this point, the Italian legislator, having missed the deadline for transposition of the mentioned directive, used a decree law, even in the absence of the requirements of necessity and urgency, to make tax crimes a prerequisite of the corporate liability. The lack of a systematic approach in the inclusion of tax crimes in Legislative Decree no. 231/2001 has not been fixed even through the recent Legislative Decree, no. 75/2020 implementing the PIF directive.
Strictly Locally Testable and Resources Restricted Control Languages in Tree-Controlled Grammars
Creators: name: Truthe, Bianca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Complexity (cs.CC)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: Tree-controlled grammars are context-free grammars where the derivation process is controlled in such a way that every word on a level of the derivation tree must belong to a certain control language. We investigate the generative capacity of such tree-controlled grammars where the control languages are special regular sets, especially strictly locally testable languages or languages restricted by resources of the generation (number of non-terminal symbols or production rules) or acceptance (number of states). Furthermore, the set theoretic inclusion relations of these subregular language families themselves are studied.
description: In Proceedings AFL 2023, arXiv:2309.01126
Pre-equilibrium mechanisms in the93Nb(p,alpha) inclusive reaction at incident energies from 65 to 160 MeV
Creators: name: Dimitrova, S. S.
name: Cowley, A. A.
name: Zemlyanaya, E. V.
name: Lukyanov, K. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The reaction mechanism of pre-equilibrium proton-induced $α$-particle emission from 93Nb at an incident energy of 100 MeV was investigated with polarized projectiles. A formalism based on the statistical multistep direct emission model of Feshbach, Kerman and Koonin was found to give a reasonably good reproduction of cross section and analyzing power angular distributions at various emission energies. Existing experimental distributions for the same reaction at an incident energy of 65 MeV were also analyzed with the same model. The incident-energy variation from 65 MeV up to 160 MeV was found to be consistent with the predictions of the basic model. However, whereas knockout of an $α$ cluster is the dominant reaction mechanism in the final stage at the lowest- and highest incident energies, at 100 MeV a pickup process competes with comparable intensity in yield.
description: 11 pages, 5 figures
Compressed sensing for Hamiltonian reconstruction
Creators: name: Rudinger, Kenneth
name: Joynt, Robert
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In engineered quantum systems, the Hamiltonian is often not completely known and needs to be determined experimentally with accuracy and efficiency. We show that this may be done at temperatures that are greater than the characteristic interaction energies, but not too much greater. The condition for this is that there are not too many interactions: the Hamiltonian is sparse in a well-defined sense. The protocol that accomplishes this is related to compressed sensing methods of classical signal processing; in this case applied to sparse rather than low-rank matrices.
description: 6 pages, 3 figures
Sailing under the Magellanic Clouds: A DECam View of the Carina Dwarf
Creators: name: McMonigal, B.
name: Bate, N. F.
name: Lewis, G. F.
name: Irwin, M. J.
name: Battaglia, G.
name: Ibata, R. A.
name: Martin, N. F.
name: McConnachie, A. W.
name: Guglielmo, M.
name: Conn, A. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present deep optical photometry from the DECam imager on the 4m Blanco telescope of over 12 deg$^2$ around the Carina dwarf spheroidal, with complete coverage out to 1 degree and partial coverage extending out to 2.6 degrees. Using a Poisson-based matched filter analysis to identify stars from each of the three main stellar populations, old, intermediate, and young, we confirm the previously identified radial age gradient, distance, tidal radius, stellar radial profiles, relative stellar population sizes, ellipticity, and position angle. We find an angular offset between the three main elliptical populations of Carina, and find only tentative evidence for tidal debris, suggesting that past tidal interactions could not have significantly influenced the Carina dwarf. We detect stars in the vicinity of, but distinct to, the Carina dwarf, and measure their distance to be 46$\pm$2 kpc. We determine this population to be part of the halo of the Large Magellanic Cloud at an angular radius of over 20 degrees. Due to overlap in colour-magnitude space with Magellanic stars, previously detected tidal features in the old population of Carina are likely weaker than previously thought.
description: 13 pages, 10 figures, 2 tables
Assessment of hearing-related lifestyle (Lelic et al., 2022)
Creators: name: Lelic, Dina
name: Wolters, Florian
name: Herrlin, Petra
name: Smeds, Karolina
Publisher: name: ASHA journals
Year: 2022
Subjects: Audiology

description: Purpose: Auditory lifestyle can play a role in hearing care needs, and, as such, it needs to be considered when treating people with hearing loss. In this study, we propose a questionnaire consisting of 24 listening situations based on the Common Sound Scenarios (CoSS) framework. Method: Seventeen experienced hearing aid (HA) users filled out the Hearing-Related Lifestyle Questionnaire four times: Days 1, 2, 15, and 29. The questionnaire consisted of 24 listening situations that participants rated on frequency of occurrence, importance to hear well, difficulty to hear, and HA satisfaction. Four questionnaire outcomes were extracted from these ratings: richness of hearing-related lifestyle, hearing demand, hearing difficulty, and HA satisfaction. Additionally, the participants were asked whether any listening situations are not understandable or relatable, whether any situations are missing from the questionnaire, and whether the number of questions is acceptable. Test–retest reliability analyses were done to assess whether the questionnaire outcomes are reliable across the four reports. Correlation analyses were done to assess whether there is a relationship between the questionnaire outcomes. Results: The questionnaire outcomes have excellent reliability. The listening situations in the questionnaire are generally complete and relatable, and the number of questions is acceptable. Correlation analyses revealed that the questionnaire outcomes are related to each other. Conclusions: Currently, there are no other hearing-related lifestyle questionnaires that purely assess listening situations. The proposed questionnaire has the potential to add to our understanding of hearing-related lifestyle of people needing or undergoing hearing care. Supplemental Material S1. The HEARLI-Q listening situations and questions in four languages. Supplemental Material S2. The pen and paper version of the questionnaire in English. Supplemental Material S3. The pen and paper version of the questionnaire in Danish. Supplemental Material S4. The pen and paper version of the questionnaire in German. Supplemental Material S5. The pen and paper version of the questionnaire in Swedish. Supplemental Material S6. Screenshots depicting how the questions were presented on a smartphone. Lelic, D., Wolters, F., Herrlin, P., & Smeds, K. (2022). Assessment of hearing-related lifestyle based on the Common Sound Scenarios Framework. American Journal of Audiology. Advance online publication. https://doi.org/10.1044/2022_AJA-22-00079
Near-forward Raman study of a phonon-polariton reinforcement regime in the Zn(Se,S) alloy
Creators: name: Hussein, Rami Hajj
name: Pagès, Olivier
name: Firszt, Franciszek
name: Marasek, Agnieszka
name: Paszkowicz, Wojtek
name: Maillard, Alain
name: Broch, Laurent
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate by near-forward Raman scattering a presumed reinforcement of the (A-C,B-C)-mixed phonon-polariton of a A1-xBxC zincblende alloy when entering its longitudinal optical (LO-)regime near the Brillouin zone centre Γ, as predicted within the formalism of the linear dielectric response. A choice system to address such issue is ZnSe0.68S0.32 due to the moderate dispersion of its refractive index in the visible range, a sine qua non condition to bring the phonon-polariton insight near Γ. The LO-regime is actually accessed by using the 633.0 nm laser excitation, testified by the strong emergence of the (Zn-Se,Zn-S)-mixed phonon-polariton at ultimately small scattering angles.
Finite element analysis of biomechanical interactions of a subcutaneous suspension suture and human face soft-tissue: a cadaver study
Creators: name: Mousavi, Seyed Ali
name: Nazari, Mohammad Ali
name: Perrier, Pascal
name: Panahi, Masoud Shariat
name: Meadows, John
name: Christen, Marie-Odile
name: Mojallal, Ali
name: Payan, Yohan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: In order to study the local interactions between facial soft-tissues and a Silhouette Soft suspension suture, a CE marked medical device designed for the repositioning of soft tissues in the face and the neck, Finite element simulations were run, in which a model of the suture was embedded in a three-layer Finite Element structure that accounts for the local mechanical organization of human facial soft tissues. A 2D axisymmetric model of the local interactions was designed in ANSYS, in which the geometry of the tissue, the boundary conditions and the applied loadings were considered to locally mimic those of human face soft tissue constrained by the suture in facial tissue repositioning. The Silhouette Soft suture is composed of a knotted thread and sliding cones that are anchored in the tissue. Hence, simulating these interactions requires special attention for an accurate modelling of contact mechanics. As tissue is modelled as a hyper-elastic material, the displacement of the facial soft tissue changes in a nonlinear way with the intensity of stress induced by the suture and the number of the cones. Our simulations show that for a 4-cone suture a displacement of 4.35mm for a 2.0N external loading and of 7.6mm for 4.0N. Increasing the number of cones led to the decrease in the equivalent local strain (around 20%) and stress (around 60%) applied to the tissue. The simulated displacements are in general agreement with experimental observations.
Dynamics of the effective mass and the anomalous velocity in two-dimensional lattices
Creators: name: Fang, Y.
name: Duque-Gomez, Federico
name: Sipe, J. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The semiclassical description of the dynamics of wave packets in periodic potentials and subject to an applied force relies on the concepts of effective mass and anomalous transport. This picture is valid if the force changes slowly in time and space, so that the particle described by the wave packet has time to respond according to the properties of the lattice. We analyze the dynamical corrections to this picture when a uniform force is suddenly applied, identifying separate corrections to the usual group and anomalous velocities. We find approximate semianalytical expressions for generalized "dynamical" group and anomalous velocities, and the associated accelerations. We use a two-dimensional optical lattice with finite Berry curvature to illustrate the semianalytical approximation in a regime where the dynamical corrections are significant, suggesting the possibility of experiments to detect them; we compare the results with a full numerical solution, showing excellent agreement for weak forces.
description: 16 pages, 15 figures
Statistics of the first passage time of Brownian motion conditioned by maximum value or area
Creators: name: Kearney, Michael J.
name: Majumdar, Satya N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive the moments of the first passage time for Brownian motion conditioned by either the maximum value or the area swept out by the motion. These quantities are the natural counterparts to the moments of the maximum value and area of Brownian excursions of fixed duration, which we also derive for completeness within the same mathematical framework. Various applications are indicated.
description: 29 pages, 4 figures included
Geometric phases in neutrino mixing
Creators: name: M., Manosh T.
name: Shaji, N.
name: Thayyullathil, Ramesh Babu
name: Mathew, Titus K
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Neutrinos can acquire both dynamic and geometric phases due to the non-trivial mixing between mass and flavour eigenstates. In this article, we derive the general expressions for all plausible gauge invariant diagonal and off-diagonal geometric phases in the three flavour neutrino model using the kinematic approach. We find that diagonal and higher order off-diagonal geometric phases are sensitive to the mass ordering and the Dirac CP violating phase $δ$. We show that, third order off-diagonal geometric phase ($Φ_{μeτ}$) is invariant under any cyclic or non-cyclic permutations of flavour indices when the Dirac CP phase is zero. For non-zero $δ$, we find that $Φ_{μeτ}(δ)=Φ_{e μτ}(-δ)$. Further, we explore the effects of matter background using a two flavour neutrino model and show that the diagonal geometric phase is either 0 or $π$ in the MSW resonance region and takes non-trivial values elsewhere. The transition between zero and $π$ occurs at the point of complete oscillation inversion called the nodal point, where the diagonal geometric phase is not defined. Also, in two flavour approximations, two distinct diagonal geometric phases are co-functions with respect to the mixing angle. Finally, in the two flavour model, we show that the only second order off-diagonal geometric phase is a topological invariant quantity and is always $π$.
description: 12 pages, accepted for publication in Modern Physics Letters A, similar to the accepted version, different from arXiv:2104.12632
The validity of quasi steady-state approximations in discrete stochastic simulations
Creators: name: Kim, Jae Kyoung
name: Josić, Krešimir
name: Bennett, Matthew R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: 92B05

description: In biochemical networks, reactions often occur on disparate timescales and can be characterized as either "fast" or "slow." The quasi-steady state approximation (QSSA) utilizes timescale separation to project models of biochemical networks onto lower-dimensional slow manifolds. As a result, fast elementary reactions are not modeled explicitly, and their effect is captured by non-elementary reaction rate functions (e.g. Hill functions). The accuracy of the QSSA applied to deterministic systems depends on how well timescales are separated. Recently, it has been proposed to use the non-elementary rate functions obtained via the deterministic QSSA to define propensity functions in stochastic simulations of biochemical networks. In this approach, termed the stochastic QSSA, fast reactions that are part of non-elementary reactions are not simulated, greatly reducing computation time. However, it is unclear when the stochastic QSSA provides an accurate approximation of the original stochastic simulation. We show that, unlike the deterministic QSSA, the validity of the stochastic QSSA does not follow from timescale separation alone, but also depends on the sensitivity of the non-elementary reaction rate functions to changes in the slow species. The stochastic QSSA becomes more accurate when this sensitivity is small. Different types of QSSAs result in non-elementary functions with different sensitivities, and the total QSSA results in less sensitive functions than the standard or the pre-factor QSSA. We prove that, as a result, the stochastic QSSA becomes more accurate when non-elementary reaction functions are obtained using the total QSSA. Our work provides a novel condition for the validity of the QSSA in stochastic simulations of biochemical reaction networks with disparate timescales.
description: 21 pages, 4 figures
Belarus and the European Union. From confrontation to the dialogue
Creators: name: Titarenko, Larissa
Publisher: name: Universita' degli Studi di Salerno
Year: 2018
Subjects: Belarus
European Union
Foreign policy
Bilateral relations
Economy
Sanctions
Dialogue

description: Republic of Belarus as an independent state appeared on the map of Europe only in 1991, after the collapse of the Soviet Union. Currently, Belarus is a middle-size country on the borderland between the European Union and Russia. Although politically Belarus is independent, it takes part in the political and economic unions within the post-soviet region, such as Eurasian Economic Union. Belarus is also in the bilateral union with Russia. Therefore its foreign policy depends on these Unions. From 1994 when the country turned from the Parliamentary to the Presidential Republic, an authoritarian political regime of Alexander Lukashenko has been established: conservative in domestic issues and politically oriented to Russia. This political factor influences Belarusian foreign policy. Belarus participated in the Wider Europe and Eastern Neighborhood Program, being an outsider in both programs because until recently both sides, Belarus and the European Union, prioritized their own interests and did not make any political compromises. Under the influence of recent political and economic changes in the region (protracted economic crises, escalation of Russian-Ukrainian conflict after 2014 Maidan revolution, long-lasting Western anti-Belarus political and economic sanctions) Belarus has started a new wave of post-soviet transition. Still being nationalistic and paternalistic, the country is becoming more open to the West and making steps forward the European Union. For this reason, in 2015 most of the Western political and economic sanctions were suspended, and the relationship between the European Union and Belarus got improved. It is still unclear what will be the next steps in the EU-Belarus affairs. However, geopolitical position of Belarus as a borderland between the East and the West makes it necessary to promote multilateral policy and develop political, economic and cultural dialogue with the European Union.
A high-mobility electronic system at an electrolyte-gated oxide surface
Creators: name: Gallagher, Patrick
name: Lee, Menyoung
name: Petach, Trevor A.
name: Stanwyck, Sam W.
name: Williams, James R.
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Goldhaber-Gordon, David
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electrolyte gating is a powerful technique for accumulating large carrier densities in surface two-dimensional electron systems (2DES). Yet this approach suffers from significant sources of disorder: electrochemical reactions can damage or alter the surface of interest, and the ions of the electrolyte and various dissolved contaminants sit Angstroms from the 2DES. Accordingly, electrolyte gating is well-suited to studies of superconductivity and other phenomena robust to disorder, but of limited use when reactions or disorder must be avoided. Here we demonstrate that these limitations can be overcome by protecting the sample with a chemically inert, atomically smooth sheet of hexagonal boron nitride (BN). We illustrate our technique with electrolyte-gated strontium titanate, whose mobility improves more than tenfold when protected with BN. We find this improvement even for our thinnest BN, of measured thickness 6 A, with which we can accumulate electron densities nearing 10^14 cm^-2. Our technique is portable to other materials, and should enable future studies where high carrier density modulation is required but electrochemical reactions and surface disorder must be minimized.
Licencias Creative Commons: un modelo de colaboración y socialización del conocimiento e innovación
Creators: name: Estrada, Maria
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Acceso Abierto, Licencias Creative Commons, Gestión del Conocimiento
subject: https://decs2020.bvsalud.org/cgi-bin/wxis1660.exe/decsserver/

description: Reflexionar acerca de las implicaciones que tienen las licencias Creative Commons y cómo se insertan dentro de las iniciativas para promover el acceso a la información, a la educación y los derechos culturales
description: {"references": ["Estrada, M. (mayo 13-14, 2019). Licencias Creative Commons: un modelo de colaboraci\u00f3n y socializaci\u00f3n del conocimiento e innovaci\u00f3n [Presentaci\u00f3n de la ponencia]. II Jornadas de Educaci\u00f3n a Distancia: Conocimiento Libre, Tecnolog\u00edas Digitales e Innovaci\u00f3n Educativa, Maracay, Venezuela. 10.5281/zenodo.7109103"]}
Energy Aware Clustering Protocol(EACP) For Heterogeneous WSNs
Creators: name: Kumar, Surender
name: Kumar, Sumit
name: Bhushan, Bharat
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Energy saving to prolong the network life is an important design issue while developing a new routing protocol for wireless sensor network. Clustering is a key technique for this and helps in maximizing the network lifetime and scalability. Most of the routing and data dissemination protocols of WSN assume a homogeneous network architecture, in which all sensors have the same capabilities in terms of battery power, communication, sensing, storage, and processing. Recently, there has been an interest in heterogeneous sensor networks, especially for real deployments. This research paper has proposed a new energy aware clustering protocol (EACP) for heterogeneous wireless sensor networks. Heterogeneity is introduced in EACP by using two types of nodes: normal and advanced. In EACP cluster heads for normal nodes are elected with the help of a probability scheme based on residual and average energy of the normal nodes. This will ensure that only the high residual normal nodes can become the cluster head in a round. Advanced nodes use a separate probability based scheme for cluster head election and they will further act as a gateway for normal cluster heads and transmit their data load to base station when they are not doing the duty of a cluster head. Finally a sleep state is suggested for some sensor nodes during cluster formation phase to save network energy. The performance of EACP is compared with SEP and simulation result shows the better result for stability period, network life and energy saving than SEP.
description: 15 Pages, 10 figures. in print at http://airccse.org/journal/ijc2014.html
On weakly irreducible nonnegative tensors and interval hull of some classes of tensors
Creators: name: Kannan, M. Rajesh
name: Shaked-Monderer, Naomi
name: Berman, Abraham
Publisher: name: arXiv
Year: 2014
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 15A69

description: In this article we prove the strict monotonicity of the spectral radius of weakly irreducible nonnegative tensors. As an application, we give a necessary and sufficient condition for an interval hull of tensors to be contained in the set of all strong $\mathcal{M}$-tensors. We also establish some properties of $\mathcal{M}$-tensors. Finally, we consider some problems related to interval hull of positive (semi)definite tensors and $P(P_0)$-tensors.
description: 10 pages
Katabaseis von Vergil bis Apuleius – eine Reise in die römische Unterwelt?
Creators: name: Solfen, Jonas
Publisher: name: Universität Bielefeld
Year: 2023
Subjects: subject: 870

description: Die Unterwelt der lateinischen Literatur steht in der Tradition ihrer griechischen Vorbilder. Sie ist jedoch ebenfalls von den vielfältigen Ansätzen der römischen Autoren geprägt. In dieser Arbeit wird eine vergleichende Analyse verschiedener fiktionaler Texte von Vergil bis Apuleius auf Grundlage der Terminologie vorgenommen, die Dennerlein in "Narratologie des Raumes" zusammenstellt. Dabei wird die Frage geklärt, inwieweit von der einen römischen Unterwelt gesprochen werden kann. Allgemeingültige Aspekte der Unterweltsdarstellung werden ebenso betrachtet wie die Besonderheiten unterschiedlicher Werke.
Gravitational waves as a probe of SUSY scale
Creators: name: Kamada, Ayuki
name: Yamada, Masaki
Publisher: name: arXiv
Year: 2014
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: FOS: Physical sciences

description: We investigate the sources of the Hubble-induced mass for a flat direction in supersymmetric theories and show that the sign of the Hubble-induced mass generally changes just after the end of inflation. This implies that global cosmic strings generally form after the end of inflation in most supersymmetric models, including the Minimal Supersymmetric Standard Model. The cosmic strings emit gravitational waves whose frequency corresponds to the Hubble scale, until they disappear when the Hubble parameter decreases down to the soft mass of the flat direction. As a result, the peak frequency of gravitational waves is related to the supersymmetric scale. The observation of this gravitational wave signal will give us information of supersymmetric scale and reheating temperature.
description: 5 pages, 2 figures
Clustering Fossils in Solid Inflation
Creators: name: Akhshik, Mohammad
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In solid inflation the single field non-Gaussianity consistency condition is violated. As a result, the long tensor perturbation induces observable clustering fossils in the form of quardupole anisotropy in large scale structure power spectrum. In this work we revisit the bispectrum analysis for the scalar-scalar-scalar and tensor-scalar-scalar for the general parameter space of solid. We consider the parameter space of the model in which the level of non-Gaussianity generated is consistent with Planck constraints. Specializing to this allowed range of model parameter, we calculate the quadrupole anisotropy induced from the long tensor perturbations on the power spectrum of scalar perturbations. We argue that imprints of clustering fossil from primordial gravitational waves on large scale structures can be detected from the future galaxy surveys.
description: 20 pages, no figure
Robust topological surface states of Bi2Se3 thin films on amorphous SiO2/Si substrate and a large ambipolar gating effect
Creators: name: Bansal, Namrata
name: Koirala, Nikesh
name: Brahlek, Matthew
name: Han, Myung-Geun
name: Zhu, Yimei
name: Cao, Yue
name: Waugh, Justin
name: Dessau, Daniel S.
name: Oh, Seongshik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The recent emergence of topological insulators (TI) has spurred intensive efforts to grow TI thin films on various substrates. However, little is known about how robust the topological surface states (TSS) are against disorders and other detrimental effects originating from the substrates. Here, we report observation of a well-defined TSS on Bi2Se3 films grown on amorphous SiO2 (a-SiO2) substrates and a large gating effect on these films using the underneath doped-Si substrate as the back gate. The films on a-SiO2 were composed of c-axis ordered but random in-plane domains. However, despite the in-plane randomness induced by the amorphous substrate, the transport properties of these films were superior to those of similar films grown on single-crystalline Si(111) substrates, which are structurally better matched but chemically reactive with the films. This work sheds light on the importance of chemical compatibility, compared to lattice matching, for the growth of TI thin films, and also demonstrates that the technologically-important and gatable a-SiO2/Si substrate is a promising platform for TI films.
description: Accepted for publication in Applied Physics Letters
Nanocomposite membranes with Au nanoparticles for dialysis-based catalytic reduction-separation of nitroaromatic compounds
Creators: name: Cyganowski, Piotr
name: Wolska, Joanna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Apart from the fact that nitroaromatic compounds (NARs) have toxic and mutagenic characteristics, they are also essential substrates for the synthesis of aromatic amines (AAMs). In this context, the present study presents a new approach that enables NAR-contaminated wastewaters to be treated as a reagent for the synthesis of AAMs. It involves the fabrication of anion exchange membranes with Au nanoparticles (AuNPs) that simultaneously reduce 4-nitrophenol (4-NP) and separate the resultant 4-aminophenol (4-AP) via. the dialysis mechanism. The nanocomposite membranes were prepared by amino-modification of poly(vinyl chloride) films obtained in the presence of cyclohexanone (CH) or tetrahydrofuran (THF), followed by Au(III) reduction coupled-adsorption. The nanomaterials were analysed using scanning transmission electron microscopy (STEM) and Fourier-transformation infrared spectroscopy (FT-IR). The catalytic reaction was carried out in a dialysis unit, where the concentration of 4-NP in the wastewater, and the concentration of separated 4-AP were monitored using UV-Vis spectroscopy. The nanocomposite membranes formed using THF effectively reduced the 4-NP and separated the resultant 4-AP. The yield of the 4-NP conversion reached 80% with a rate constant of 11.30 10-3 min-1. Based on the results, THF contributed to the formation of diffusion paths in which the 4-NP was simultaneously separated and reduced.
A Census of the Low Accretors. II: Accretion Properties
Creators: name: Thanathibodee, Thanawuth
name: Molina, Brandon
name: Serna, Javier
name: Calvet, Nuria
name: Hernández, Jesús
name: Muzerolle, James
name: Franco-Hernández, Ramiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Much is known about the processes driving accretion from protoplanetary disks onto low-mass pre-main-sequence stars (T Tauri stars). Nevertheless, it is unclear how accretion stops. To determine the accretion properties and their relation to stellar properties and gain insight into the last stages of accretion, we present a detailed analysis of 24 low and possible accretors, previously identified using the He I $λ$10830 line. We model moderate-resolution H$α$ profiles of these stars using magnetospheric accretion flow models that account for the chromospheric contribution at the line center. Based on parameters derived from the fits of 20 stars that can be reproduced with the models, we find a power-law relation between the disk truncation radius and the mass accretion rate consistent with predictions from theory and simulations. Comparing the corotation and truncation radii, we find that most of our targets are accreting in the unstable regime and rule out the propeller as the main process stopping accretion. For the truncation radius to be the same as the magnetic radius, the dipole magnetic field and/or the efficiency parameter $ξ$ need to be smaller than previously determined, suggesting that higher-order fields dominate in low accretion rates. Lastly, we determine that the lowest accretion rates that can be detected by H$α$ line modeling are $1-3\times10^{-11}M_{\odot}yr^{-1}$ for M3 stars and $3-5\times10^{-11}M_{\odot}yr^{-1}$ for K5 stars. These limits are lower than the observed accretion rates in our sample, suggesting that we have reached a physical lower limit. This limit, $\dot{M}\sim10^{-10}M_{\odot}yr^{-1}$, is consistent with EUV-dominated photoevaporation.
description: Accepted for publication in The Astrophysical Journal
Lower bounds for the complex polynomial Hardy--Littlewood inequality
Creators: name: Araujo, Gustavo
name: Pellegrino, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The Hardy--Littlewood inequality for complex homogeneous polynomials asserts that given positive integers $m\geq2$ and $n\geq1$, if $P$ is a complex homogeneous polynomial of degree $m$ on $\ell_{p}^{n}$ with $2m\leq p\leq\infty$ given by $P(x_{1},\ldots,x_{n})=\sum_{|α|=m}a_{α}\mathbf{{x}^α}$, then there exists a constant $C_{\mathbb{C},m,p}^{\mathrm{pol}}\geq1$ (which is does not depend on $n$) such that \[ \left( {\sum\limits_{\left\vert α\right\vert =m}}\left\vert a_{α}\right\vert ^{\frac{2mp}{mp+p-2m}}\right) ^{\frac{mp+p-2m}{2mp}}\leq C_{\mathbb{C},m,p}^{\mathrm{pol}}\left\Vert P\right\Vert , \] with $\Vert P\Vert:=\sup_{z\in B_{\ell_{p}^{n}}}|P(z)|$. In this short note, among other results, we provide nontrivial lower bounds for the constants $C_{\mathbb{C},m,p}^{\mathrm{pol}}$. For instance we prove that, for $m\geq2$ and $2m\leq p
Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated $θ$-(BEDT-TTF)$_2X$ Organic Conductors
Creators: name: Sato, T.
name: Kagawa, F.
name: Kobayashi, K.
name: Ueda, A.
name: Mori, H.
name: Miyagawa, K.
name: Kanoda, K.
name: Kumai, R.
name: Murakami, Y.
name: Tokura, Y.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The critical cooling rate $R_{\rm c}$ above which charge ordering is kinetically avoided upon cooling, which results in charge-glass formation, was investigated for the geometrically frustrated system $θ$-(BEDT-TTF)$_2X$. X-ray diffraction experiments revealed that $θ$-(BEDT-TTF)$_2$TlCo(SCN)$_4$ exhibits a horizontally charge-ordered state, and kinetic avoidance of this state requires rapid cooling of faster than 150 K/min. This value is markedly higher than that reported for two other isostructural $θ$-type compounds, thus demonstrating the lower charge-glass-forming ability of $X$ $=$ TlCo(SCN)$_4$. In accounting for the systematic variations of $R_{\rm c}$ among the three $θ$-(BEDT-TTF)$_2X$, we found that stronger charge frustration leads to superior charge-glass former. Our results suggest that charge frustration tends to slow the kinetics of charge ordering.
description: 4 pages, 3 figures. Selected for Editors' Choice
Speed of sound and liquid-gas phase transition in nuclear matter
Creators: name: He, Wei-bo
name: Shao, Guo-yun
name: Xie, Chong-long
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the speed of sound in nuclear matter at finite temperature and density~(chemical potential) in the nonlinear Walecka model. The numerical results suggest that the behaviors of sound speed are closely related to the the nuclear liquid-gas (LG) phase transition and the associated spinodal structure. The adiabatic sound speed is nonzero at the critical endpoint (CEP) in the mean field approximation. We further derive the boundary of vanishing sound velocity in the temperature-density phase diagram, and point out the region where the sound wave equation is broken. The distinction between the speed of sound in nuclear matter and that in quark matter contains important information about the equation of state of strongly interacting matter at intermediate and high density. We also formulate the relations between differently defined speed of sound using the fundamental thermodynamic relations.
description: 11pages, 16 figures
Passive Newtonian noise suppression for gravitational-wave observatories based on shaping of the local topography
Creators: name: Harms, Jan
name: Hild, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this article we propose a new method for reducing Newtonian noise in laser-interferometric gravitational-wave detectors located on the Earth's surface. We show that by excavating meter-scale recesses in the ground around the main test masses of a gravitational wave detector it is possible to reduce the coupling of Rayleigh wave driven seismic disturbances to test mass displacement. A discussion of the optimal recess shape is given and we use finite element simulations to derive the scaling of the Newtonian noise suppression with the parameters of the recess as well as the frequency of the seismic excitation. Considering an interferometer similar to an Advance LIGO configuration, our simulations indicate a frequency dependent Newtonian noise suppression factor of 2 to 4 in the relevant frequency range for a recesses of 4m depth and a width and length of 11m and 5m, respectively. Though a retrofit to existing interferometers seems not impossible, the application of our concept to future infrastructures seems to provide a better benefit/cost ratio and therefore a higher feasibility.
description: 12 pages, 5 figures
FIM: A fatigued-injured muscle model based on the sliding filament theory
Creators: name: Jalali, Fatemeh
name: Nazari, Mohammad Ali
name: Bahrami, Arash
name: Perrier, Pascal
name: Payan, Yohan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Skeletal muscle modeling has a vital role in movement studies and the development of therapeutic approaches. In the current study, a Huxley-based model for skeletal muscle is proposed, which demonstrates the impact of impairments in muscle characteristics. This model focuses on three identified ions: H + , inorganic phosphate Pi and Ca 2+. Modifications are made to actin-myosin attachment and detachment rates to study the effects of H + and Pi. Additionally, an activation coefficient is included to represent the role of calcium ions interacting with troponin, highlighting the importance of Ca 2+. It is found that maximum isometric muscle force decreases by 9.5% due to a reduction in pH from 7.4 to 6.5 and by 47.5% in case of the combination of a reduction in pH and an increase of Pi concentration up to 30 mM, respectively. Then the force decline caused by a fall in the active calcium ions is studied. When only 15% of the total calcium in the myofibrillar space is able to interact with troponin, up to 80% force drop is anticipated by the model. The proposed fatigued-injured muscle model is useful to study the effect of various shortening velocities and initial muscletendon lengths on muscle force; in addition, the benefits of the model go beyond predicting the force in different conditions as it can also predict muscle stiffness and power. The power and stiffness decrease by 40% and 6.5%, respectively, due to the pH reduction, and the simultaneous accumulation of H + and Pi leads to a 50% and 18% drop in power and stiffness.
Money Walks: A Human-Centric Study on the Economics of Personal Mobile Data
Creators: name: Staiano, Jacopo
name: Oliver, Nuria
name: Lepri, Bruno
name: de Oliveira, Rodrigo
name: Caraviello, Michele
name: Sebe, Nicu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: K.6.0

description: In the context of a myriad of mobile apps which collect personally identifiable information (PII) and a prospective market place of personal data, we investigate a user-centric monetary valuation of mobile PII. During a 6-week long user study in a living lab deployment with 60 participants, we collected their daily valuations of 4 categories of mobile PII (communication, e.g. phonecalls made/received, applications, e.g. time spent on different apps, location and media, photos taken) at three levels of complexity (individual data points, aggregated statistics and processed, i.e. meaningful interpretations of the data). In order to obtain honest valuations, we employ a reverse second price auction mechanism. Our findings show that the most sensitive and valued category of personal information is location. We report statistically significant associations between actual mobile usage, personal dispositions, and bidding behavior. Finally, we outline key implications for the design of mobile services and future markets of personal data.
description: 15 pages, 2 figures. To appear in ACM International Joint Conference on Pervasive and Ubiquitous Computing (Ubicomp 2014)
The impact of metallicity-dependent mass loss versus dynamical heating on the early evolution of star clusters
Creators: name: Trani, Alessandro A.
name: Mapelli, Michela
name: Bressan, Alessandro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have run direct N-body simulations to investigate the impact of stellar evolution and dynamics on the structural properties of young massive (3x10^4 solar masses) star clusters (SCs) with different metallicities (Z=1, 0.1, 0.01 solar metallicity). Metallicity drives the mass loss by stellar winds and supernovae (SNe), with SCs losing more mass at high metallicity. We have simulated three sets of initial conditions, with different initial relaxation timescale. We find that the evolution of the half-mass radius of SCs depends on how fast two-body relaxation is with respect to the lifetime of massive stars. If core collapse is slow in comparison with stellar evolution, then mass loss by stellar winds and SNe is the dominant mechanism driving SC evolution, and metal-rich SCs expand more than metal-poor ones. In contrast, if core collapse occurs on a comparable timescale with respect to the lifetime of massive stars, then SC evolution depends on the interplay between mass loss and three-body encounters: dynamical heating by three-body encounters (mass loss by stellar winds and SNe) is the dominant process driving the expansion of the core in metal-poor (metal-rich) SCs. As a consequence, the half-mass radius of metal-poor SCs expands more than that of metal-rich ones. We also find core radius oscillations, which grow in number and amplitude as metallicity decreases.
description: 12 pages, 9 figures, 1 table, MNRAS, accepted
Using the Crab Nebula as Polarization Angle Calibrator for the Korean VLBI Network
Creators: name: Kam, Minchul
name: Trippe, Sascha
name: Byun, Do-Young
name: Park, Jongho
name: Kang, Sincheol
name: Shin, Naeun
name: Lee, Sang-Sung
name: Jung, Taehyun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Crab nebula is widely used as a polarization angle calibrator for single-dish radio observations because of its brightness, high degree of linear polarization, and well-known polarization angle over a wide frequency range. However, the Crab nebula cannot be directly used as a polarization angle calibrator for single-dish observations with the Korean VLBI Network (KVN), because the beam size of the telescopes is smaller than the size of the nebula. To determine the polarization angle of the Crab nebula as seen by KVN, we use 3C 286, a compact polarized extragalactic radio source whose polarization angle is well-known, as a reference target. We observed both the Crab nebula and 3C 286 with the KVN from 2017 to 2021 and find that the polarization angles at the total intensity peak of the Crab nebula (equatorial coordinates (J2000) R.A. $=$ 05$^{\rm h}$34$^{\rm m}$32.3804$^{\rm s}$ and Dec $=$ 22$^\circ$00'44.0982") are $154.2^\circ \pm 0.3^\circ$, $151.0^\circ \pm 0.2^\circ$, $150.0^\circ \pm 1.0^\circ$, and $151.3^\circ \pm 1.1^\circ$ at 22, 43, 86, and 94 GHz, respectively. We also find that the polarization angles at the pulsar position (RA $=$ 05$^{\rm h}$34$^{\rm m}$31.971$^{\rm s}$ and Dec $=$ 22$^\circ$00'52.06") are $154.4^\circ\pm 0.4^\circ$, $150.7^\circ\pm 0.4^\circ$, and $149.0^\circ\pm 1.0^\circ$ for the KVN at 22, 43, and 86 GHz. At 129 GHz, we suggest to use the values $149.0^\circ \pm 1.6^\circ$ at the total intensity peak and $150.2^\circ \pm 2.0^\circ$ at the pulsar position obtained with the Institute for Radio Astronomy in the Millimeter Range (IRAM) 30-meter Telescope. Based on our study, both positions within the Crab nebula can be used as polarization angle calibrators for the KVN single-dish observations.
description: 9 pages, 5 figures, 6 tables. Accepted for publication in JKAS (submitted 2022 Oct 13; accepted 2022 Dec 15)