cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Active chiral molecules in activity gradients
Creators: name: Muzzeddu, Pietro Luigi
name: Vuijk, Hidde Derk
name: Lowen, Hartmut
name: Sommer, Jens-Uwe
name: Sharma, Abhinav
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: While the behavior of active colloidal molecules is well studied by now for a constant activity, the effect of activity gradients is much less understood. Here we explore one of the simplest molecules in activity gradients, namely active chiral dimers composed of two particles with opposite active torques of the same magnitude. We show analytically that with increasing torque, the dimer switches its behavior from antichemotactic to chemotactic. The origin of the emergent chemotaxis is the cooperative exploration of activity gradient by the two particles. While one of the particles moves into higher activity regions, the other moves towards lower activity region resulting in a net bias in the direction of higher activity. We do a comparative study of chiral active particles with charged Brownian particles under magnetic field and show that despite the fundamental similarity in terms of their odd-diffusive behavior, their dynamics and chemotactic behavior are generally not equivalent. We demonstrate this explicitly in a dimer composed of oppositely charged active particles, which remains antichemotactic for any magnetic field.
Students’ perception of bioeconomy as an important factor in communicating and further development of the bioeconomy in Slovakia and the Czech Republic
Creators: name: Marcineková, Lenka
name: Palátová, Petra
name: Výbošťok, Jozef
name: Jarský, Vilém
name: Riedl, Marcel
name: Giertliová, Blanka
name: Dudík, Roman
name: Šálka, Jaroslav
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: This study focuses on the issues of bioeconomy perception of students at forestry faculties in Slovakia and the Czech Republic. Bioeconomy is seen as a great window of opportunities, hence there is increased demand for bioeconomy education. This paper can help answer this demand and improve the curricula of universities providing bioeconomy-related education. The survey was conducted at the Technical University in Zvolen and the Czech University of Life Sciences Prague among 367 students. The results show that 70% of students have heard about bioeconomy, while this number is significantly higher amongst Slovak students. Considering bioeconomy awareness, we identified significant differences between different study programmes. The main information source about the bioeconomy issues turns out to be university courses followed by news. Czech students turned out to be less satisfied with bioeconomy involvement in curricula, and who also find it necessary to increase bioeconomy focus within their study curriculum. Our results show that targeted communication of bioeconomy is a key factor for general acceptance of bioeconomy and its further development among students and the general public. The results obtained can be used to increase the extent to which bioeconomy is being addressed in study programmes within the analysed universities.
QCD bulk thermodynamics and conserved charge fluctuations with HISQ fermions
Creators: name: Schmidt, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: After briefly reviewing recent progress by the HotQCD collaboration in studying the 2+1 flavor QCD equation of state, we will focus on results on fluctuations of conserved charges by the BNL-Bielefeld and HotQCD collaborations. Higher order cumulants of the net-charge distributions are increasingly dominated by a universal scaling behavior, which arises due to a critical point of QCD in the chiral limit. Considering cumulants up to the 6^{th} order, we observe that they generically behave as expected from universal scaling laws, which is quite different from cumulants calculated within the hadron resonance gas model. Taking ratios of these cumulants, we obtain volume independent results that can be compared to the experimental measurements. We will argue that the freeze-out chemical potentials and the freeze-out temperature, usually obtained by a HRG model fit to the measured hadronic yields, can also be obtained in a model independent way from ab-initio lattice QCD calculations by utilizing observables related to conserved charge fluctuations. Further, we will show that the freeze-out strangeness and electric charge chemical potentials can be fixed by imposing strangeness neutrality and isospin asymmetry constraints in the lattice QCD calculations, in order to accommodate conditions met in heavy ion collisions. All results have been obtained with the highly improved staggered quark action (HISQ) and almost physical quark masses on lattices with temporal extent of N_τ=6,8,10,12.
description: 10 pages, 6 figures, contribution to the proceedings of Extreme QCD 2012, August 21-23, Washington DC, USA
Das Militär in der politischen Kultur der Türkei : vom Osmanischen Reich bis heute
Creators: name: Bilgin, Ayhan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Political culture of Turkish society
subject: militarization
subject: the Turkish military
subject: Politische Kultur in der Türkei
subject: Militarisierung
subject: das türkische Militär
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: [no abstract]
Coronaria tomentosa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. tomentosa X vosagiaca - l: Miex (Paiche in herb. de Palézieux).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Searching for Gravity Without a Metric
Creators: name: Lindwasser, Lukas W.
name: Tomboulis, E. T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently it has been explicitly shown how a theory with global $GL(d,\mathbb{R})$ coordinate (affine) invariance which is spontaneously broken down to its Lorentz subgroup will have as its Goldstone fields enough degrees of freedom to create a metric and a covariant derivative arXiv:1105.5848. Such a theory would constitute an effective theory of gravity. So far however, no explicit theory has been found which exhibits this symmetry breaking pattern, mainly due to the difficulty of even writing down a $GL(d,\mathbb{R})$ invariant actions in the absence of a metric. In this paper we explicitly construct an affine generalization of the Dirac action employing infinite dimensional spinorial representations of the group. This implies that it is built from an infinite number of spinor Lorentz multiplets. We introduce a systematic procedure for obtaining $GL(d,\mathbb{R})$ invariant interaction terms to obtain quite general interacting models. Such models have order operators whose expectation value can break affine symmetry to Poincaré symmetry. We discuss possible interactions and mechanisms for this symmetry breaking to occur, which would provide a dynamical explanation of the Lorentzian signature of spacetime.
description: Published version
Entwicklung spezialisierter Bioreaktoren für die gezielte Differenzierung von Stammzellen und ihr Einsatz im Tissue Engineering
Creators: name: Böhm, Stefanie
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Adulte mesenchymale Stammzellen
subject: osteogene Differenzierung
subject: mechanische Stimulation
subject: dynamische Kultivierung
subject: Reproduzierbarkeit
subject: Adult mesenchymal stem cells
subject: osteogenic differentiation
subject: mechanical stimulation
subject: dynamic cultivation
subject: reproducibility
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Photometric reverberation mapping of 3C120
Creators: name: Nuñez, F. Pozo
name: Ramolla, M.
name: Westhues, C.
name: Bruckmann, C.
name: Haas, M.
name: Chini, R.
name: Steenbrugge, K.
name: Murphy, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of a five month monitoring campaign of the local active galactic nuclei (AGN) 3C120. Observations with a median sampling of two days were conducted with the robotic 15cm telescope VYSOS-6 located near Cerro Armazones in Chile. Broad band (B,V) and narrow band (NB) filters were used in order to measure fluxes of the AGN and the H_beta broad line region (BLR) emission line. The NB flux is constituted by about 50% continuum and 50% H_beta emission line. To disentangle line and continuum flux, a synthetic H_beta light curve was created by subtracting a scaled V-band light curve from the NB light curve. Here we show that the H_beta emission line responds to continuum variations with a rest frame lag of 23.6 +/- 1.69 days. We estimate a virial mass of the central black hole M_BH = 57 +/- 27 * 10^6 solar masses, by combining the obtained lag with the velocity dispersion of a single contemporaneous spectrum. Using the flux variation gradient (FVG) method, we determined the host galaxy subtracted rest frame 5100A luminosity at the time of our monitoring campaign with an uncertainty of 10% (L_AGN = 6.94 +/- 0.71* 10^43 ergs^-1). Compared with recent spectroscopic reverberation results, 3C120 shifts in the R_BLR - L_AGN diagram remarkably close to the theoretically expected relation of R-L^0.5. Our results demonstrate the performance of photometric AGN reverberation mapping, in particular for efficiently determining the BLR size and the AGN luminosity
description: 11 pages, 11 figures, Published in Astronomy and Astrophysics
title: How dark patterns influence how you behave online
Creators: name: Butler, Leon
Publisher: name: TU Dublin
Year: 2019

description: The concept of human centred design is one of the fundamental aims of design organisations such as IDEO. They seek to collaboratively problem-solve systemic challenges in such areas as education, food, mobility, and ageing with the person at the centre of the solution. Design is about trusting in the process and using quantifiable and qualitative research methods to create stories, products and experiences that really matter to people.
Long-term nitrogen addition and drought altered root trait and plant biomass allocation of five herbs in early spring in a temperate forest
Creators: name: Wang, Qinggui
name: Liu, Guancheng
name: Qu, Peng
name: Yan, Guoyong
name: Xing, Yajuan
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: In early spring, because the tree and shrub layers are still dormant, the absorption of nutrients by herbs is the key factor to maintain nutrients in temperate forest ecosystems, but it is not clear whether climate change will change the nutrient uptake strategy of herbs. Therefore, we measured the biomass, fine root morphology, and stoichiometry of five dominant herbs in response to environmental changes in early spring in a temperate forest in northeastern China. The results showed that (1) Fine root morphology had strong plasticity. Under nitrogen addition treatment, the herbs tended to change the fine root length to absorb soil nutrients and water. (2) Under drought treatment, the herbs distributed more biomass to the belowground. Maintaining a higher root-shoot ratio might increase the relative supply of water to the herbs. (3) Nitrogen addition significantly decreased the belowground biomass allocation, but increased the ratio of belowground nitrogen to phosphorus (N:P) and the root metabolic activity. (4) Ephemeral herbaceous fine root morphology was more sensitive to water and nitrogen than other herbaceous plants. Collectively, in the context of climate change, early spring herbs may respond to environmental pressure through self-regulation and change growth strategies in temperate forest ecosystems.
title: In Vitro Oxygen Availability Modulates the Effect of Artesunate on HeLa cells
titleType: Other
Creators: name: Murray, James
Publisher: name: TU Dublin
Year: 2014

description: Background/Aim: Hypoxia can affect chemo - therapeutic drug efficacy in cancer patients, yet related in vitro assays in oxygen-rich environment remain the norm. Such levels are well beyond normoxic/hypoxic levels typically experienced by normal tissues/tumor masses. The present study evaluated how artesunate anti-tumor efficacy is modulated by oxygen availability in HeLa cells and its implications for future in vitro analyses. Materials and Methods: Real-time cell analysis was employed to evaluate HeLa cell toxicity to artesunate at 21%, 4% or 1% oxygen. Cell count analysis was performed to validate real-time data. Results: An increase in artesunate efficacy was observed when oxygen concentration was reduced from atmospheric levels down to in vivo-relevant levels. Conclusion: Artesunate is more potent than originally reported using standard oxygen conditions during in vitro studies. The inclusion of this long overlooked variable as standard in future in vitro analysis procedures is warranted.
Modelle zur Analyse, Auswahl, Einführung und Erfolgsmessung von betrieblichen Informationssystemen
Creators: name: Zakhariya, Halyna
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2015
Subjects: subject: Information sytems models
subject: grant management
subject: Modelle betrieblicher Informationssysteme
subject: Customer Relationhip Management
subject: Anti-Fraud Management
subject: Drittmittelmanagement
subject: Dewey Decimal Classification::600 | Technik::650 | Management

description: [no abstract]
Reconciling the Contour-Improved and Fixed-Order Approaches for $τ$ Hadronic Spectral Moments II: Renormalon Norm and Application in $α_s$ Determinations
Creators: name: Benitez-Rathgeb, Miguel A.
name: Boito, Diogo
name: Hoang, André H.
name: Jamin, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a previous article, we have shown that the discrepancy between the fixed-order (FOPT) and contour-improved (CIPT) perturbative expansions for $τ$ hadronic spectral function moments, which had affected the precision of $α_s$ determinations for many years, may be reconciled by employing a renormalon-free (RF) scheme for the gluon condensate (GC) matrix element. In addition, the perturbative convergence of spectral function moments with a sizeable GC correction can be improved. The RF GC scheme depends on an IR factorization scale $R$ and the normalization $N_g$ of the GC renormalon. In the present work, we use three different methods to determine $N_g$, yielding a result with an uncertainty of $40\%$. Following two recent state-of-the-art strong coupling determination analyses at ${\cal O}(α_s^5)$, we show that using the renormalon-free GC scheme successfully reconciles the results for $α_s({m_τ^2})$ based on CIPT and FOPT. The uncertainties due to variations of $R$ and the uncertainty of $N_g$ only lead to a small or moderate increase of the final uncertainty of $α_s(m_τ^2)$, and affect mainly the CIPT expansion method. The FOPT and CIPT results obtained in the RF GC scheme may be consistently averaged. The RF GC scheme thus constitutes a powerful new ingredient for future analyses of $τ$ hadronic spectral function moments.
description: 43 pages, 5 figures; presentation in section 3.2 improved, results unchanged; version published in the Journal of High Energy Physics
Spatially resolved investigation of strain and composition variations in (In,Ga)N/GaN epilayers
Creators: name: Wilsch, Benjamin
name: Jahn, Uwe
name: Jenichen, Bernd
name: Lähnemann, Jonas
name: Grahn, Holger T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The strain state and composition of a 400 nm thick (In,Ga)N layer grown by metal-organic chemical vapor deposition on a GaN template are investigated by spatially integrated x-ray diffraction and cathodoluminescence (CL) spectroscopy as well as by spatially resolved CL and energy dispersive x-ray analysis. The CL investigations confirm a process of strain relaxation accompanied by an increasing indium content toward the surface of the (In,Ga)N layer, which is known as the compositional pulling effect. Moreover, we identify the strained bottom, unstrained top, and gradually relaxed intermediate region of the (In,Ga)N layer. In addition to an increase of the indium content along the growth direction, the strain relaxation leads to an enhancement of the lateral variations of the indium distribution toward the surface.
description: 4 pages, 5 figures
Generalized Weighted Permutation Entropy
Creators: name: Stosic, Darko
name: Stosic, Dusan
name: Stosic, Tatijana
name: Stosic, Borko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A novel heuristic approach is proposed here for time series data analysis, dubbed Generalized weighted permutation entropy, which amalgamates and generalizes beyond their original scope two well established data analysis methods: Permutation entropy, and Weighted permutation entropy. The method introduces a scaling parameter to discern the disorder and complexity of ordinal patterns with small and large fluctuations. Using this scaling parameter, the complexity-entropy causality plane is generalized to the complexity-entropy-scale causality box. Simulations conducted on synthetic series generated by stochastic, chaotic, and random processes, as well as real world data, are shown to produce unique signatures in this three dimensional representation.
Vortex and Meissner phases of strongly interacting bosons on a two-leg ladder
Creators: name: Piraud, M.
name: Heidrich-Meisner, F.
name: McCulloch, I.P.
name: Greschner, Sebastian
name: Vekua, T.
name: Schollwöck, U.
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We establish the phase diagram of the strongly interacting Bose-Hubbard model defined on a two-leg ladder geometry in the presence of a homogeneous flux. Our work is motivated by a recent experiment [M. Atala et al., Nat. Phys. 10, 588 (2014) 1745-247310.1038/nphys2998], which studied the same system, in the complementary regime of weak interactions. Based on extensive density matrix renormalization group simulations and a bosonization analysis, we fully explore the parameter space spanned by filling, interleg tunneling, and flux. As a main result, we demonstrate the existence of gapless and gapped Meissner and vortex phases, with the gapped states emerging in Mott-insulating regimes. We calculate experimentally accessible observables such as chiral currents and vortex patterns. © 2015 American Physical Society.
Dust input from AGB stars in the Large Magellanic Cloud
Creators: name: Zhukovska, Svitlana
name: Henning, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The dust-forming population of AGB stars and their input to the interstellar dust budget of the Large Magellanic Cloud (LMC) are studied with evolutionary dust models with the main goals (1) to investigate how the amount and composition of dust from AGB stars vary over galactic history; (2) to characterise the mass and metallicity distribution of the present population of AGB stars; (3) to quantify the contribution of AGB stars of different mass and metallicity to the present stardust population in the interstellar medium (ISM). We use models of the stardust lifecycle in the ISM developed and tested for the Solar neighbourhood. The first global spatially resolved reconstruction of the star formation history of the LMC from the Magellanic Clouds Photometric Survey is employed to calculate the stellar populations in the LMC. The dust input from AGB stars is dominated by carbon grains from stars with masses < 4 Msun almost over the entire history of the LMC. The production of silicate, silicon carbide and iron dust is delayed until the ISM is enriched to about half the present metallicity in the LMC. For the first time, theoretically calculated dust production rates of AGB stars are compared to those derived from IR observations of AGB stars for the entire galaxy. We find good agreement within scatter of various observational estimates. We show that the majority of silicate and iron grains in the present stardust population originate from a small population of intermediate-mass stars consisting of only about 4% of the total number of stars, whereas in the Solar neighbourhood they originate from low-mass stars. With models of the lifecycle of stardust grains in the ISM we confirm a large discrepancy between dust input from stars and the existing interstellar dust mass in the LMC reported in Matsuura et al. 2009.
description: Accepted to A&A
DMC-ICE13: ambient and high pressure polymorphs of ice from Diffusion Monte Carlo and Density Functional Theory
Creators: name: Della Pia, Flaviano
name: Zen, Andrea
name: Alfè, Dario
name: Michaelides, Angelos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ice is one of the most important and interesting molecular crystals exhibiting a rich and evolving phase diagram. Recent discoveries mean that there are now twenty distinct polymorphs; a structural diversity that arises from a delicate interplay of hydrogen bonding and van der Waals dispersion forces. This wealth of structures provides a stern test of electronic structure theories, with Density Functional Theory (DFT) often not able to accurately characterise the relative energies of the various ice polymorphs. Thanks to recent advances that enable the accurate and efficient treatment of molecular crystals with Diffusion Monte Carlo (DMC), we present here the DMC-ICE13 dataset; a dataset of lattice energies of 13 ice polymorphs. This dataset encompasses the full structural complexity found in the ambient and high-pressure molecular ice polymorphs and when experimental reference energies are available our DMC results deliver sub-chemical accuracy. Using this dataset we then perform an extensive benchmark of a broad range of DFT functionals. Of the functionals considered, we find revPBE-D3 and RSCAN to reproduce reference absolute lattice energies with the smallest error, whilst optB86b-vdW and SCAN+rVV10 have the best performance on the relative lattice energies. Our results suggest that a single functional achieving reliable performance for all phases is still missing, and that care is needed in the selection of the most appropriate functional for the desired application. The insights obtained here may also be relevant to liquid water and other hydrogen bonded and dispersion bonded molecular crystals.
Zusammenhang von Pubertät, Schlaf und Gehirnentwicklung
Creators: name: Fandakova, Yana
name: Jeffs, Livia
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: In dieser Studie untersuchen wir den Zusammenhang zwischen der Pubertät (gemessen anhand der PDS, Testosteronspiegel in Speichel und Haar), dem Schlaf-Chronotyp und der Veränderung in der kortikalen Dicke bei 8-11-jährigen Kindern.
title: Contribution ä l’etude des premiers peuplements de l’Europe occidentale: L’apport des recherches sur le Plio-Pleistocene d’Orce et de Cueva Victoria (Espagne)
Creators: name: Gibert, Josep
name: Campillo, Domenec
name: Garcia-Olivares, Enrique
name: Walker, Michaeil
name: Ferrandez, Carles
name: Borja, Concepción
name: Malgosa, Asumpeió
name: Sanchez, Florentina
name: Ribot, Francese
name: Gibert, Lluis
name: Albaldejo, Silvia
name: Iglesias, Alfredo
name: Gibert, Patso
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
TG32 - An accurate RF reference signal for testing power measuring instruments
Creators: name: Hall, Blair D
Publisher: name: Measurement Standards Laboratory of New Zealand
Year: 2017

description: Power is a fundamental quantity in radio and microwave frequency systems, so it is important to measure it properly. Measuring instruments, such as power sensors, spectrum analysers, measurement receivers, etc, need to be calibrated using an accurately known reference signal. 
This paper describes a simple way to produce an accurate reference signal that uses a resistive power splitter and a pair of power sensors to improve the raw performance of a signal generator and remove the effects of an arbitrary connecting network.
Entropy-Driven Phase Transitions of Entanglement
Creators: name: Facchi, Paolo
name: Florio, Giuseppe
name: Parisi, Giorgio
name: Pascazio, Saverio
name: Yuasa, Kazuya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the behavior of bipartite entanglement at fixed von Neumann entropy. We look at the distribution of the entanglement spectrum, that is the eigenvalues of the reduced density matrix of a quantum system in a pure state. We report the presence of two continuous phase transitions, characterized by different entanglement spectra, which are deformations of classical eigenvalue distributions.
description: 5 pages, 5 figures
Asymmetrische 1,4-Addition anspruchsvoller Nukleophile mit Hilfe von Olefinliganden auf Basis von Kohlenhydraten
Creators: name: Albrecht, Fabian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Asymmetric synthesis
subject: olefin hybrid ligands
subject: carbohydrates
subject: pseudo-enantiomers
subject: MIDA-boronates
subject: Asymmetrische Synthese
subject: Olefinliganden
subject: Kohlenhydrate
subject: pseudo-Enantiomere
subject: 1,4-Addition
subject: MIDA-Boronate
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
On periodic points of free inverse monoid endomorphisms
Creators: name: Rodaro, Emanuele
name: Silva, Pedro V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 20M35, 68Q85, 54E50

description: It is proved that the periodic point submonoid of a free inverse monoid endomorphism is always finitely generated. Using Chomsky's hierarchy of languages, we prove that the fixed point submonoid of an endomorphism of a free inverse monoid can be represented by a context-sensitive language but, in general, it cannot be represented by a context-free language.
description: 18 pages
Lattice Study of the Extent of the Conformal Window in Two-Color Yang-Mills Theory
Creators: name: Voronov, Gennady
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform a lattice calculation of the Schrödinger functional running coupling in SU(2) Yang-Mills theory with six massless Wilson fermions in the fundamental representation. The aim of this work is to determine whether the above theory has an infrared fixed point. Due to sensitivity of the $SF$ renormalized coupling to the tuning of the fermion bare mass we were unable to reliably extract the running coupling for stronger bare couplings.
Quantised Bulk Conductivity as a Local Chern Marker
Creators: name: d'Ornellas, Peru
name: Barnett, Ryan
name: Lee, Derek K. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A central property of Chern insulators is the robustness of the topological phase and edge states to impurities in the system. Despite this, Chern number cannot be straightforwardly calculated in the presence of disorder. Recently, work has been done to propose a local analog of the Chern number, called local markers, that can be used to characterise disordered systems. However, it was unclear whether the proposed markers represented a physically-measurable property of the system. Here we propose a local marker starting from a physical argument, as a local cross-conductivity measured in the bulk of the system. We find the explicit form of the marker for a non-interacting system of electrons on the lattice and show that it corresponds to existing expressions for the Chern number. Examples are calculated for a variety of disordered and amorphous systems, showing that it is precisely quantised to the Chern number and robust against disorder.
description: 10 pages, 9 figures
Schleifen von PCBN
Creators: name: Behrens, Leif
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Wear mechanisms
subject: material removal mechanisms
subject: G-ratio
subject: cutting edge quality
subject: PCBN
subject: Verschleiß- und Materialtrennmechanismen
subject: G-Verhältnis
subject: Schneidkantenqualität
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Supersymmetric dS4 solutions in D=11 supergravity
Creators: name: Di Gioia, M.
name: Gutowski, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Supersymmetric warped product dS4 solutions in D=11 supergravity are classified. The Killing spinor is associated with two possible stabilizer groups, SU(3) and G_2. We show that there are no solutions to the Killing Spinor equations in the G_2 stabilizer case. For the SU(3) stablilzer case, all of the conditions imposed from supersymmetry on the 4-form flux, and the geometry of the internal manifold, are determined in terms of SU(3) invariant spinor bilinears.
description: 31 pages, latex
Furtive Quantum Sensing Using Matter-Wave Cloaks
Creators: name: Fleury, Romain
name: Alu, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce the concept of furtive quantum sensing, demonstrating the possibility of concealing quantum objects from matter-waves, while maintaining their ability to interact and get excited by the impinging particles. This is obtained by cloaking, with tailored homogeneous metamaterial layers, quantum systems having internal degrees of freedom. The effect is a low-observable quantum sensor with drastically reduced elastic scattering and optimized absorption levels, a concept that opens interesting venues in particle detection, high-efficiency electrical pumping and quantum supercomputing.
description: 17 pages, 4 figures, plus 5 supplementary pages
Photon emission from an excited string
Creators: name: Firrotta, Maurizio
name: Rosenhaus, Vladimir
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the amplitude for an excited string in any precisely specified state to decay into another excited string in any precisely specified state, via emission of a tachyon or photon. For generic and highly excited string states, the amplitude is a complicated function of the outgoing kinematic angle, sensitive to the precise state. We compute the square of this amplitude, averaged over polarizations of the ingoing string and summed over polarizations of the outgoing string. The seeming intractability of these calculations is made possible by extracting amplitudes involving excited strings from amplitudes involving tachyons and a large number of photons; the number of photons grows with the complexity of the excited string state. Our work is in the spirit of the broad range of recent studies of statistical mechanics and chaos for quantum many-body systems. The number of different excited string states at a given mass is exponentially large, and our calculation gives the emission amplitude of a single photon from each of the microstates -- which, through the Horowitz-Polchinski correspondence principle, are in correspondence with black hole microstates.
description: 32 pages, v2: typos fixed
MMGL: Multi-Scale Multi-View Global-Local Contrastive learning for Semi-supervised Cardiac Image Segmentation
Creators: name: Zhao, Ziyuan
name: Hu, Jinxuan
name: Zeng, Zeng
name: Yang, Xulei
name: Qian, Peisheng
name: Veeravalli, Bharadwaj
name: Guan, Cuntai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: With large-scale well-labeled datasets, deep learning has shown significant success in medical image segmentation. However, it is challenging to acquire abundant annotations in clinical practice due to extensive expertise requirements and costly labeling efforts. Recently, contrastive learning has shown a strong capacity for visual representation learning on unlabeled data, achieving impressive performance rivaling supervised learning in many domains. In this work, we propose a novel multi-scale multi-view global-local contrastive learning (MMGL) framework to thoroughly explore global and local features from different scales and views for robust contrastive learning performance, thereby improving segmentation performance with limited annotations. Extensive experiments on the MM-WHS dataset demonstrate the effectiveness of MMGL framework on semi-supervised cardiac image segmentation, outperforming the state-of-the-art contrastive learning methods by a large margin.
description: Accepted by IEEE International Conference on Image Processing (ICIP 2022)
Nuclear incompressibility and sound speed in uniform matter and finite nuclei
Creators: name: Grams, Guilherme
name: Somasundaram, Rahul
name: Margueron, Jerome
name: Khan, Elias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have extended the compressible liquid-drop model (CLDM) with a density-dependent surface term (eCLDM), which allows for a unified description of both the nuclear ground state energies and the incompressibility modulus in finite nuclei $K_A$. We analyse the role of the nuclear empirical parameters, e.g., $K_{sat}$, $Q_{sat}$, $L_{sym}$ and $K_{sym}$, which contribute to the bulk properties, as well as the role of the finite size contributions. For the bulk properties, the density and isospin dependencies of the nuclear incompressibility in infinite matter are characterized by introducing new empirical parameters, and two new constraints for the value of $K_{sym}$ are suggested. For finite nuclei, we employ a Bayesian approach coupled to a Markov-Chain Monte-Carlo (MCMC) exploration of the parameter space to confront the model predictions of $K_A$ in Zr, Sn and Pb isotopes to the experimental data. We show that $Q_{sat}\approx -950\pm 200$~MeV describes the experimental measurements of $K_A$ in these isotopes. This value is different from the ones deduced from phenomenological nuclear energy density functionals, suggesting a possible explanation of their difficulty to accurately describe Zr, Sn and Pb data all together. In addition we explore the impact of a fictitious measurement of the Giant Monopole Resonance energy in $^{132}$Sn. We show that this measurement, provided it is accurate enough, will allow to better determine $K_{sym}$ and $K_τ$. Finally we explore the properties of the sound speed around saturation density and show the important role of finite size terms in finite nuclei since they reduce the sound speed to approximately half compared to nuclear matter.
description: 21 pages, 12 figures
Disentangling sources of anomalous diffusion
Creators: name: Thiel, Felix
name: Flegel, Franziska
name: Sokolov, Igor M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Mathematical Physics (math-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We show that some important properties of subbdiffusion of unknown origin (including those of mixed origin) can be easily assessed when findeng the "fundamental moment" of the corresponding process, i.e., the one which is additive in time. In subordinated processes, the index of the fundamental moment is inherited from the parent process and its time-dependence from the leading one. In models of particle's motion in disordered potentials, the index is governed by the structural part of the disorder while the time dependence is given by its energetic part.
description: 4 pages, 3 figures, submitted to Phys. Rev. Lett
Two-stage superconductivity in the Hatsugai-Kohmoto-BCS model
Creators: name: Li, Yu
name: Mishra, Vivek
name: Zhou, Yi
name: Zhang, Fu-Chun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Superconductivity in strongly correlated electrons can emerge out from a normal state that is beyond the Landau's Fermi liquid paradigm, often dubbed as "non-Fermi liquid". While the theory for non-Fermi liquid is still not yet conclusive, a recent study on the exactly-solvable Hatsugai-Kohmoto (HK) model has suggested a non-Fermi liquid ground state whose Green's function resembles the Yang-Rice-Zhang ansatz for cuprates [P. W. Phillips, L. Yeo and E. W. Huang, Nat. Phys. $\bf{16}$, 1175 (2020)]. Similar to the effect of on-site Coulomb repulsion in the Hubbard model, the repulsive interaction in the HK model divides the momentum space into three parts: empty, single-occupied and double-occupied regions, that are separated from each other by two distinct Fermi surfaces. In the presence of an additional Bardeen-Cooper-Schrieffer (BCS)-type pairing interaction of a moderate strength, we show that the system exhibits a "two-stage superconductivity" feature as temperature decreases: a first-order superconducting transition occurs at a temperature $T_{\rm c}$ that is followed by a sudden increase of the superconducting order parameter at a lower temperature $T_{\rm c}^{\prime}
description: 10 pages, 8 figures
GPGPU-beschleunigte Reduktion bathymetrischer Geländemodelle mit T-Spline-Flächen
Creators: name: Asche, Christian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: T-spline surfaces
subject: surface reconstruction
subject: T-Spline-Flächen
subject: Flächenrückführung
subject: GPGPU
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: [no abstract]
Der Mittellandkanal : Landschaft - kultivierte Landschaft - Kulturlandschaft : eine Untersuchung zur materiellen Landumnutzung in der industriellen Moderne
Creators: name: Al-Mazraawi, Nadja
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Mittelland Canal
subject: northern German landscape
subject: (cultural) landscape
subject: agriculture and industry
subject: waterway project
subject: industrial heritage
subject: Mittellandkanal
subject: norddeutsche Landschaft
subject: Kulturlandschaft
subject: Landwirtschaft und Industrie
subject: Verkehrsprojekt
subject: Industriekultur
subject: Dewey Decimal Classification::900 | Geschichte und Geografie

description: [no abstract]
Digitale Bildgebung und Rekonstruktion von lichtbrechenden Proben in den Lebenswissenschaften
Creators: name: Antonopoulos, Georgios Christian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Optical computed tomography
subject: digital holography
subject: inverse problems
subject: Optische Computertomographie
subject: digitale Holographie
subject: inverse Probleme
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Enhanced Super-Radiance in Epsilon-Near-Zero Plasmonic Channels
Creators: name: Fleury, Romain
name: Alu, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe the possibility of drastically boosting the spontaneous emission of a collection of two-level quantum emitters by embedding them in an epsilon-near-zero (ENZ) environment, consisting of a plasmonic waveguide operated at cut-off. This phenomenon relies on the combination of Purcell enhancement and Dicke superradiance effects, exploiting the large and uniform local density of states in ENZ channels, which is shown to significantly extend the spatial extent of these quantum effects. We envision exciting applications in optical sensing, molecular detection and low-threshold lasing.
description: 17 pages, 4 figures
ACT-Net: Asymmetric Co-Teacher Network for Semi-supervised Memory-efficient Medical Image Segmentation
Creators: name: Zhao, Ziyuan
name: Zhu, Andong
name: Zeng, Zeng
name: Veeravalli, Bharadwaj
name: Guan, Cuntai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: While deep models have shown promising performance in medical image segmentation, they heavily rely on a large amount of well-annotated data, which is difficult to access, especially in clinical practice. On the other hand, high-accuracy deep models usually come in large model sizes, limiting their employment in real scenarios. In this work, we propose a novel asymmetric co-teacher framework, ACT-Net, to alleviate the burden on both expensive annotations and computational costs for semi-supervised knowledge distillation. We advance teacher-student learning with a co-teacher network to facilitate asymmetric knowledge distillation from large models to small ones by alternating student and teacher roles, obtaining tiny but accurate models for clinical employment. To verify the effectiveness of our ACT-Net, we employ the ACDC dataset for cardiac substructure segmentation in our experiments. Extensive experimental results demonstrate that ACT-Net outperforms other knowledge distillation methods and achieves lossless segmentation performance with 250x fewer parameters.
Prunus armeniaca
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. Armeniaca L. (Armeniaca vulgaris Lam.) Cat. 84. Kultiviert; bis Zen Stadien (Zeneggen), 1347 m (Stehler u. a.; alljährlich fruchttragend) und Montana, 1680 m (Wille; selten fruktifizierend). Selten verwildert (z. B. Saillon).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A strontium lattice clock with reduced blackbody radiation shift
Creators: name: Al-Masoudi, Ali Khalas Anfoos
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Frequency standards
subject: blackbody radiation shift
subject: absolute frequency
subject: Frequenzstandards
subject: Schwarzkörperverschiebung
subject: Absolutfrequenz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
‘An urgent thing to do right now’: everyday learning and environmental remittances among Vietnamese university students in Australia
Creators: name: Dao, Hop
Publisher: name: University of Wollongong
Year: 2025
Subjects: classificationCode: 470107
subject: Media studies

description: Australia has a flourishing international education business to support its growth, but air travel associated with international student movement generates a significant amount of carbon emissions. These environmental impacts are often neglected in universities’ sustainability reports and plans as this perspective might negatively impact their reputation as advocates for a sustainable future for all. Acknowledging this impact, this research focuses on the potential for international education to transfer innovative mindset and behaviours about environmental protection from the host country back home as the international students move across borders and argues that this can be conceptualised as a form of social remittance. I conducted a photovoice research with twenty-four Vietnamese students, including international students or international alumni in Australia and three studying in Vietnam. Findings from this small-scale participatory research suggest that even when Australian universities do not focus in their curriculum on environmental knowledge or encouraging environmentally aware behaviours, they do so indirectly by bringing the students here and exposing them to new kinds of everyday knowledge and behaviours. Furthermore, having learned new behaviours, students then find ways to talk about them to family and friends at home.
Quenching of Single-Particle Strength in A=15 Nuclei
Creators: name: Kay, B. P.
name: Tang, T. L.
name: Tolstukhin, I. A.
name: Roderick, G. B.
name: Mitchell, A. J.
name: Ayyad, Y.
name: Bennett, S. A.
name: Chen, J.
name: Chipps, K. A.
name: Crawford, H. L.
name: Freeman, S. J.
name: Garrett, K.
name: Gott, M. D.
name: Hall, M. R.
name: Hoffman, C. R.
name: Jayatissa, H.
name: Macchiavelli, A. O.
name: MacGregor, P. T.
name: Sharp, D. K.
name: Wilson, G. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Absolute cross sections for the addition of $s$- and $d$-wave neutrons to $^{14}$C and $^{14}$N have been determined simultaneously via the ($d$,$p$) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, $ΔS$, is around $-20$ MeV for the $^{14}$C$+$$n$ system and $+8$ MeV for $^{14}$N$+$$n$. The population of the $1s_{1/2}$ and $0d_{5/2}$ orbitals for both systems is reduced by a factor of approximately 0.5 compared to the independent single-particle model, or about 0.6 when compared to the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of $^{9}$Be and $^{12}$C. The simultaneous technique used removes many systematic uncertainties.
description: 6 pages, 4 figures