cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bose condensates at high angular momenta
Creators: name: Viefers, S.
name: Hansson, T. H.
name: Reimann, S. M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We exploit the analogy with the Quantum Hall (QH) system to study weakly interacting bosons in a harmonic trap. For a $δ$-function interaction potential the ``yrast'' states with $L\ge N(N-1)$ are degenerate, and we show how this can be understood in terms of Haldane exclusion statistics. We present spectra for 4 and 8 particles obtained by numerical and algebraic methods, and demonstrate how a more general hard-core potential lifts the degeneracies on the yrast line. The exact wavefunctions for N=4 are compared with trial states constructed from composite fermions (CF), and the possibility of using CF-states to study the low L region at high N is discussed.
description: 6 pages, including 4 figures and 3 tables
Zignoichthyidae Winterbottom 1974
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Zignoichthyidae

description: Family † Zignoichthyidae Winterbottom 1974
 † Zignoichthyidae Winterbottom 1974: 99 (family) † Zignoichthys Tyler 1973
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 83, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
An investigation of the quantum $J_1-J_2-J_3$ model on the honeycomb lattice
Creators: name: Fouet, J. B.
name: Sindzingre, P.
name: Lhuillier, C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated the quantum $J_1-J_2-J_3$ model on the honeycomb lattice with exact diagonalizations and linear spin-wave calculations for selected values of $J_{2}/J_{1}$, $J_{3}/J_{1}$ and antiferromagnetic ($J_{1}>0$) or ferromagnetic ($J_{1}<0$) nearest neighbor interactions. We found a variety of quantum effects: "order by disorder" selection of a N{é}el ordered ground-state, good candidates for non-classical ground-states with dimer long range order or spin-liquid like. The purely antiferromagnetic Heisenberg model is confirmed to be N{é}el ordered. Comparing these results with those observed on the square and triangular lattices, we enumerate some conjectures on the nature of the quantum phases in the isotropic models.
description: 14 pages, 22 Postscript figures, uses svjour.cls and svepj.clo, submitted to European Physical Journal B: condensed matter physic
A Lab-scale Investigation of the Mars Kieffer Model
Creators: name: Mc Keown, Lauren E.
name: Poston, Michael J.
name: Diniega, Serina
name: Portyankina, Ganna
name: Hansen, Candice J.
name: Aye, Klaus-Michael
name: Carey, Elizabeth M.
name: Scully, Jennifer E. C.
name: Piqueux, Sylvain
name: Shiraishi, Lori R.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Experimental techniques
subject: Planetary science
subject: Mars
subject: 500 Naturwissenschaften und Mathematik::520 Astronomie::520 Astronomie und zugeordnete Wissenschaften

description: The Kieffer model is a widely accepted explanation for seasonal modification of the Martian surface by CO2 ice sublimation and the formation of a "zoo" of intriguing surface features. However, the lack of in situ observations and empirical laboratory measurements of Martian winter conditions hampers model validation and refinement. We present the first experiments to investigate all three main stages of the Kieffer model within a single experiment: (i) CO2 condensation on a thick layer of Mars regolith simulant; (ii) sublimation of CO2 ice and plume, spot, and halo formation; and (iii) the resultant formation of surface features. We find that the full Kieffer model is supported on the laboratory scale as (i) CO2 diffuses into the regolith pore spaces and forms a thin overlying conformal layer of translucent ice. When a buried heater is activated, (ii) a plume and dark spot develop as dust is ejected with pressurized gas, and the falling dust creates a bright halo. During plume activity, (iii) thermal stress cracks form in a network similar in morphology to certain types of spiders, dendritic troughs, furrows, and patterned ground in the Martian high south polar latitudes. These cracks appear to form owing to sublimation of CO2within the substrate, instead of surface scouring. We discuss the potential for this process to be an alternative formation mechanism for "cracked" spider-like morphologies on Mars. Leveraging our laboratory observations, we also provide guidance for future laboratory or in situ investigations of the three stages of the Kieffer model.
Conformal equations that are not Virasoro or Weyl invariant
Creators: name: Nakayama, Yu
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While the argument by Zamolodchikov and Polchinski suggests global conformal invariance implies Virasoro invariance in two-dimensional unitary conformal field theories with discrete dilatation spectrum, it is not the case in more general situations without these assumptions. We indeed show that almost all the globally conformal invariant differential equations in two dimensions are neither Virasoro invariant nor Weyl invariant. The only exceptions are the higher spin conservation laws, conformal Killing tensor equations and the Laplace equation of a conformal scalar.
description: 18 pages, v2: appendix added
Integrative Förderung: Ein Handlungsfeld für die Sozialpädagogik?
Creators: name: Wehrli, Manuela
name: Faes, Rebecca
Publisher: name: Zenodo
Year: 2019

description: Die vorliegende Arbeit befasst sich mit der Thematik der Integrativen Förderung (IF) im Schweizer Regelschulsystem, am Beispiel der Kantone Aargau und Luzern. Die Autorinnen gehen der Frage nach, ob die IF ein Handlungsfeld für die Sozialpädagogik darstellt und inwiefern sie einen Beitrag zu einer gelingenden Umsetzung leisten könnte. Die IF in der Schweiz ist bereits Gegenstand der Forschung. Zum Einbezug der Sozialpädagogik existieren jedoch keine Studien. Aus diesem Grund entschieden sich die Autorinnen, eine qualitative Forschung mittels Experteninterviews durchzuführen. Die Arbeit zeigt am Beispiel ausgewählter Schulen die Schwierigkeiten und Chancen in der Umsetzung der IF, den bisherigen Einbezug und mögliche Handlungsfelder der Sozialpädagogik in der Schule. Laut dem vorliegenden Forschungsteil ist diese nur gering in die Schule eigebunden. Die Schulsozialarbeit zeigt sich als die am meisten etablierte Form, sie ist jedoch nur mit geringen Pensen vertreten. Durch die Einführung der IF werden die Schulen mit einer grösseren Heterogenität konfrontiert. Dies bietet Lernfelder für alle Beteiligten, Lernende müssen flexibler und toleranter werden, ihre Sozialkompetenzen steigen. Gleichzeitig ist die Integration von Lernenden mit besonderen Bedürfnissen für alle Beteiligten eine Herausforderung. Dem sozialen Lernen muss mehr Platz eingeräumt werden. Diese non-formalen Bildungsprozesse stellen ein Handlungsfeld der Sozialpädagogik dar. Besonders im Umgang mit herausforderndem Verhalten könnte letztere eine Stütze für Lehrpersonen sein, Konflikte aufklären und durch präventives Arbeiten, wie der Vermittlung von sozialen Kompetenzen, zu einem gelingenden Umgang mit Heterogenität beitragen.
description: + Code Diss LU: hslusa basp 2019 + Fussnote: Bachelorarbeit, Hochschule Luzern - Soziale Arbeit, Ausbildungsgang Sozialpädagogik, 2019 + NL-Code: NLLUHSA201909
Reactivity of graphene-supported Co clusters
Creators: name: Waleska-Wellnhofer, Natalie J.
name: Arzig, Sophie
name: Düll, Fabian
name: Bauer, Udo
name: Bachmann, Phiona
name: Steinhauer, Johann
name: Papp, Christian
name: Risse, Thomas
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Supported nanocluster
subject: Cluster chemistry
subject: CO adsorption
subject: Graphene
subject: Cobalt
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Graphene-supported Co clusters were investigated by high-resolution XPS, TPD and IRRAS using CO as a probe molecule. CO adsorption was observed at edge, on-top and bridge/hollow sites on the as-prepared clusters. Temperature-programmed XPS showed CO dissociation at T > 300 K. The CO desorption temperatures were determined by TPD measurements to be 260, 320 and 400 K for CObridge/hollow, COedge and COtop, respectively. The CO dissociation products were used to investigate the adsorption of CO on carbon and oxygen precovered Co clusters. Site blocking by these adatoms was found resulting in the absence of COedge (XPS and TPD) and a decrease of the CO adsorption capacity (XPS, TPD and IRRAS). Additionally, no CO dissociation was found on the precovered clusters concluding a blocking of the catalytically active sites which are the edge sites of the clusters.
Coupled quantum dots as quantum gates
Creators: name: Burkard, Guido
name: Loss, Daniel
name: DiVincenzo, David P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a new quantum gate mechanism based on electron spins in coupled semiconductor quantum dots. Such gates provide a general source of spin entanglement and can be used for quantum computers. We determine the exchange coupling J in the effective Heisenberg model as a function of magnetic (B) and electric fields, and of the inter-dot distance (a) within the Heitler-London approximation of molecular physics. This result is refined by using sp-hybridization, and by the Hund-Mulliken molecular-orbit approach which leads to an extended Hubbard description for the two-dot system that shows a remarkable dependence on B and a due to the long-range Coulomb interaction. We find that the exchange J changes sign at a finite field (leading to a pronounced jump in the magnetization) and then decays exponentially. The magnetization and the spin susceptibilities of the coupled dots are calculated. We show that the dephasing due to nuclear spins in GaAs can be strongly suppressed by dynamical nuclear spin polarization and/or by magnetic fields.
description: 10 pages, 4 figures. v2: minor corrections, appendix added. to be published in Phys.Rev.B
Super-Weyl Anomaly from Holography and Rigid Supersymmetry Algebra on Two-Sphere
Creators: name: An, Ok Song
name: Ko, Yong Hae
name: Won, Sok-Hyon
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Operators transform anomalously under the symmetry in the presence of quantum anomalies. We study this aspect of the super-Weyl anomaly in $\mathcal N=(1,1)$ superconformal field theories (SCFTs), in the context of AdS/CFT. In particular, we carry out holographic renormalization for $(1,1)$ pure AdS$_3$ supergravity that is supposed to be a gravity dual of the $\mathcal N=(1,1)$ SCFT, and derive holographic superconformal Ward identities with corresponding anomalies. We show that the obtained super-Weyl anomaly of the $\mathcal N=(1,1)$ SCFT induces a quantum correction term in the transformation law of the supercurrent under the rigid supersymmetry. We demonstrate that the correction term does not affect the $\mathcal N=(1,1)$ rigid supersymmetry algebra on two-sphere.
description: 17 pages
Jet production from the perturbative QCD pomeron with a running coupling constant
Creators: name: Braun, Mikhail
name: Vacca, Gian Paolo
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An analysis of minijet production from the hard pomeron with a running coupling constant is performed. Two supercritical pomerons found in the numerical study are taken into account. The calculated inclusive jet production rate is finite at small $k_{\bot}$ and behaves like $1/k^{-4}_{\bot}$ at high $k_{\bot}$ modulo factors coming from logarithmic terms. The average $k_{\bot}$ is found to be very large ($\sim 10-13 GeV/c$) and practically independent of energy. This is interpreted as an indication that at present energies we are still far from the asymptotics and that, apart from supercritical pomerons, other states contribute significantly.
Field and intensity correlations in random media
Creators: name: Sebbah, P.
name: Pnini, R.
name: Genack, A. Z.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Measurements of the microwave field transmitted through a random medium allows direct access to the field correlation function, whose complex square is the short range or C1 contribution to the intensity correlation function C. The frequency and spatial correlation function are compared to their Fourier pairs, the time of flight distribution and the specific intensity, respectively. The longer range contribution to intensity correlation is obtained directly by subtracting C1 from C and is in good agreement with theory.
description: 9 pages, 5 figures, submitted to Phys.Rev.E
NMR Relaxation Rate for 1D Multicomponent Spin-Orbital Systems
Creators: name: Kawaguchi, Akira
name: Fujii, Tatsuya
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The NMR relaxation rate $1/T_{1}$ is studied for one-dimensional multicomponent spin-orbital systems. By combining the bosonization techniques and the exact solution of the SU($n$) model, we evaluate the power-law exponent and the enhancement factor for $1/T_1$ at low temperatures. We discuss how the band splitting affects the relaxation rate, and find that $1/T_{1}$ may be enhanced around the critical value of the band splitting. The crossover behavior in $1/T_1$ around the critical point is discussed in terms of the low-frequency dynamical spin susceptibility. The effect of the hole-doping is also addressed.
description: 8 pages, 6 eps figures
Thermodynamics of Random Ferromagnetic Antiferromagnetic Spin-1/2 Chains
Creators: name: Frischmuth, Beat
name: Sigrist, Manfred
name: Ammon, Beat
name: Troyer, Matthias
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Using the quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, the specific heat, the correlation length, the generalized staggered susceptibility and magnetization of a spin-1/2 chain with random antiferromagnetic and ferromagnetic couplings, down to very low temperatures. Our data show a consistent scaling behavior in all the quantities and support strongly the conjecture drawn from the approximate real-space renormalization group treatment.A statistical analysis scheme is developed which will be useful for the search of scaling behavior in numerical and experimental data of random spin chains.
description: 13 pages, 13 figures, RevTeX
Time delay measurement of Mg II line in CTS C30.10 with SALT
Creators: name: Czerny, Bozena
name: Olejak, Aleksandra
name: Ralowski, Mateusz
name: Kozlowski, Szymon
name: Aldama, Mary Loli Martinez
name: Zajacek, Michal
name: Pych, Wojtek
name: Hryniewicz, Krzysztof
name: Pietrzynski, Grzegorz
name: Figaredo, C. Sobrino
name: Haas, Martin
name: Sredzinska, Justyna
name: Krupa, Magdalena
name: Kurcz, Agnieszka
name: Udalski, Andrzej
name: Gorski, Marek
name: Karas, Vladimir
name: Panda, Swayamtrupta
name: Sniegowska, Marzena
name: Naddaf, Mohammad-Hassan
name: Sarna, Marek
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report 6 yr monitoring of a distant bright quasar CTS C30.10 (z = 0.90052) with the Southern African Large Telescope (SALT). We measured the rest-frame time-lag of $562\pm 2$ days between the continuum variations and the response of the Mg II emission line, using the Javelin approach. More conservative approach, based on five different methods, imply the time delay of $564^{+109}_{-71}$ days. This time delay, combined with other available measurements of Mg II line delay, mostly for lower redshift sources, shows that the Mg II line reverberation implies a radius-luminosity relation very similar to the one based on a more frequently studied H$β$ line.
description: submitted to ApJ; comments welcome
Overview presentations "Towards a community-endorsed data steward profession description for Life Science research" (period January - September 2019)
Creators: name: Gelder, Celia W.G. Van
name: Jetten, Mijke
name: Scholtens, Salome
Publisher: name: Zenodo
Year: 2019
Subjects: Training
Data stewardship
Competences
Data Management
Learning objectives
Skills

description: This collection gives all the presentations (pptx) we have given in the period January - Septemer 2019: Open Science Fair, Porto, Portugal (September 2019) Education Session at ISMB2019, Basel, Switzerland (July 2019) RD-NL Essentials for Data Support Course, the Netherlands (June 2019) Liber Conference, Dublin, Ireland (June 2019) Liber RDM workshop, Dublin, Ireland (June 2019) DTL board meeting, Utrecht, the Netherlands (June 2019) ZonMw congres Personalised Medicine, Utrecht, the Netherlands (June 2019) DTL Partner Advisory Meeting, Utrecht, the Netherlands (May 2019) LCRDM networking day, Utrecht, the Netherlands (April 2019) Health-RI conference, Utrecht, the Netherlands (January 2019)
Gate-tunable superconductivity at SrTiO3 surface realized by Al layer evaporation
Creators: name: Sengupta, Shamashis
name: Tisserond, Emilie
name: Linez, Florence
name: Monteverde, Miguel
name: Murani, Anil
name: Rödel, Tobias
name: Lecoeur, Philippe
name: Maroutian, Thomas
name: Marrache-Kikuchi, Claire
name: Santander-Syro, Andrés F.
name: Fortuna, Franck
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electronic properties of low dimensional superconductors are determined by many-body-effects. This physics has been studied traditionally with superconducting thin films, and in recent times with two-dimensional electron gases (2DEGs) at oxide interfaces. In this work, we show that a superconducting 2DEG can be generated by simply evaporating a thin layer of metallic Al under ultra-high vacuum on a SrTiO3 crystal, whereby Al oxidizes into amorphous insulating alumina, doping the SrTiO3 surface with oxygen vacancies. The superconducting critical temperature of the resulting 2DEG is found to be tunable with a gate voltage with a maximum value of 360 mK. A gate-induced switching between superconducting and resistive states is demonstrated. Compared to conventionally-used pulsed-laser deposition (PLD), our work simplifies to a large extent the process of fabricating oxide-based superconducting 2DEGs. It will make such systems accessible to a broad range of experimental techniques useful to understand low-dimensional phase transitions and complex many-body-phenomena in electronic systems.
description: 15 pages, 5 figures
Additional file 1: of Emergency department non-invasive cardiac output study (EDNICO): a feasibility and repeatability study
Creators: name: D. McGregor
name: S. Sharma
name: S. Gupta
name: S. Ahmad
name: T. Godec
name: Harris, Tim
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Physiology
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Figure S4. Percentage feasibility for non-invasive cardiac output monitoring methods by participant (nÂ =â 68). Figure illustrating the percentage feasibility for non-invasive cardiac output monitoring methods by participant. (DOCX 132 kb)
Deeper Connections between Neural Networks and Gaussian Processes Speed-up Active Learning
Creators: name: Tsymbalov, Evgenii
name: Makarychev, Sergei
name: Shapeev, Alexander
name: Panov, Maxim
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Active learning methods for neural networks are usually based on greedy criteria which ultimately give a single new design point for the evaluation. Such an approach requires either some heuristics to sample a batch of design points at one active learning iteration, or retraining the neural network after adding each data point, which is computationally inefficient. Moreover, uncertainty estimates for neural networks sometimes are overconfident for the points lying far from the training sample. In this work we propose to approximate Bayesian neural networks (BNN) by Gaussian processes, which allows us to update the uncertainty estimates of predictions efficiently without retraining the neural network, while avoiding overconfident uncertainty prediction for out-of-sample points. In a series of experiments on real-world data including large-scale problems of chemical and physical modeling, we show superiority of the proposed approach over the state-of-the-art methods.
Spin-valve Effect in Nanoscale Si-based Devices
Creators: name: Hiep, Duong Dinh
name: Tanaka, Masaaki
name: Hai, Pham Nam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The silicon (Si) based spin-MOSFET (metal-oxide semiconductor field-effect transistor) is considered to be the building block of low-power-consumption electronics, utilizing spin-degrees of freedom in semiconductor devices. In this paper, we review the latest results on the spin transport in nanoscale Si-based spin-valve devices, which is important to realize the nanoscale spin-MOSFET. Our results demonstrate the importance of ballistic transport in obtaining high spin-dependent output voltage in nanoscale Si spin-valve devices.
Moment free energies for polydisperse systems
Creators: name: Sollich, Peter
name: Warren, Patrick B
name: Cates, Michael E
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A polydisperse system contains particles with at least one attribute $σ$ (such as particle size in colloids or chain length in polymers) which takes values in a continuous range. It therefore has an infinite number of conserved densities, described by a density {\em distribution} $ρ(σ)$. The free energy depends on all details of $ρ(σ)$, making the analysis of phase equilibria in such systems intractable. However, in many (especially mean-field) models the {\em excess} free energy only depends on a finite number of (generalized) moments of $ρ(σ)$; we call these models truncatable. We show, for these models, how to derive approximate expressions for the {\em total} free energy which only depend on such moment densities. Our treatment unifies and explores in detail two recent separate proposals by the authors for the construction of such moment free energies. We show that even though the moment free energy only depends on a finite number of density variables, it gives the same spinodals and critical points as the original free energy and also correctly locates the onset of phase coexistence. Results from the moment free energy for the coexistence of two or more phases occupying comparable volumes are only approximate, but can be refined arbitrarily by retaining additional moment densities. Applications to Flory-Huggins theory for length-polydisperse homopolymers, and for chemically polydisperse copolymers, show that the moment free energy approach is computationally robust and gives new geometrical insights into the thermodynamics of polydispersity.
description: RevTeX, 43 pages including figures
Balkariidae Bannikov, Tyler, Arcila & Carnevale 2016
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Balkariidae

description: Family † Balkariidae Bannikov, Tyler, Arcila & Carnevale 2016
 † Balkariidae Bannikov, Tyler, Arcila & Carnevale 2016: [5] (family) † Balkaria Bannikov, Tyler, Arcila & Carnevale 2016
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 83, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Magnetic Marbles' Mantras: Dipole Clusters, Catastrophe Machines, and Irrational Gears
Creators: name: Rehberg, Ingo
Publisher: name: Zenodo
Year: 2024

description: Talk to be presented in the "Physics Colloquium Mainz", May 28, 2024 at 16 c.t., Lecture room KPH, Johann-Joachim.Becher-Weg 45, Johannes Gutenberg-Universität Mainz. 
description: Spherical magnets are an invaluable but affordable physics toy! While vividly demonstrating chemical, physical and mathematical problems, they can also greatly inspire creativity: Questions concerning the favoured state of dipole cluster configurations lead – via an encounter with tipping points – to the invention of magnetic gears based on degenerate continua. Open source animations and patent-free hardware to play with shall garnish this triptychon.
Gender Disparities and Ultrasonographic Evaluation of Anatomic Features of Anterolateral Thigh Flap (ALT) in Individuals with Diverse BMI: A Retrospective Clinical Study
Creators: name: Yin, Jianxin
name: Wang, Lei
name: Wang, Zhouyang
name: Shi, Yanni
name: Xiong, Ping
name: He, Yue
name: Qin, Xingjun
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Ultrasonography
subject: Anterolateral thigh flap
subject: Body mass index
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Background The anterolateral thigh (ALT) flap plays a crucial role in reconstructive surgeries, providing versatile and reliable soft-tissue coverage. Flap thickness is a critical determinant of tissue volume and quality. Vascular factors, including the vascular diameter of the perforators and the length of the vascular pedicle, significantly influence flap viability and postrepair outcomes. To enhance preoperative assessment, this study integrated gender and body mass index (BMI) to analyze the anatomical characteristics of ALT flaps. Methods This study used somatic penetrating ultrasonography to examine bilateral ALT flaps in patients. This study analyzed the relationship between gender and ALT flap thickness, vascular diameter of the perforators, and vascular pedicle length. Chi-square test was used to assess variations in age and gender. Multiple t-tests compared flap thickness, vascular diameter, and pedicle length between men and women in different BMI groups. Results A total of 158 patients were included in this study from January 2018 to December 2022. In BMI < 24 and BMI ≥ 24.0 groups, males had lower ALT flap thickness than females (p < 0.0001 in each subgroup). Similarly, the vascular diameter of the perforators followed the same trend, with females having larger vascular diameters than males in BMI < 24 and BMI ≥ 24.0 groups. In terms of vascular pedicle length, males had longer pedicle length than females in both BMI < 24 and BMI ≥ 24.0 groups (p < 0.05 in each subgroup). Conclusions Females demonstrate greater ALT flap thickness and larger vascular diameter of the perforators than males, whereas males have a longer length of the vascular pedicle.
Additional file 1 of 3DFAACTS-SNP: using regulatory T cell-specific epigenomics data to uncover candidate mechanisms of type 1 diabetes (T1D) risk
Creators: name: Liu, Ning
name: Sadlon, Timothy
name: Wong, Ying Y.
name: Pederson, Stephen
name: Breen, James
name: Barry, Simon C.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1. Figures. S1–S14, and Tables S1, S2.
Magnetic Properties for the One-Dimensional Multicomponent Spin-Gap System
Creators: name: Kawaguchi, Akira
name: Fujii, Tatsuya
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic properties for the one-dimensional multicomponent quantum spin system with the excitation gap are studied based on the integrable spin model introduced by Bariev {\it et al}. By exactly computing the magnetization, we show how the characteristic structure with plateaus and cusps appears in the magnetization process. To study low-energy dynamics of the system, we apply the finite-size scaling analysis to the excitation spectrum, and thereby evaluate the power-law exponent as well as the enhancement factor for the low-temperature NMR relaxation rate $1/T_1$. We discuss the critical properties of $1/T_1$ around plateaus and cusps in the magnetization curve.
description: 7 pages, 8 eps figures, to appear in PRB
Two-level Hamiltonian of a superconducting quantum point contact
Creators: name: Ivanov, D. A.
name: Feigel'man, M. V.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: In a superconducting quantum point contact, dynamics of the superconducting phase is coupled to the transitions between the subgap states. We compute this coupling and derive the two-level Hamiltonian of the contact.
description: REVTeX, 5 pages, reference added
(De)hydration Front Propagation Into Zero-Permeability Rock
Creators: name: Schmalholz, Stefan M.
name: Khakimova, Lyudmila
name: Podladchikov, Yury
name: Bras, Erwan
name: Yamato, Philippe
name: John, Timm
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: dehydration
subject: hydration
subject: numerical modeling
subject: hydro-mechanical-chemical model
subject: permeability
subject: reaction front
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: Hydration and dehydration reactions play pivotal roles in plate tectonics and the deep water cycle, yet many facets of (de)hydration reactions remain unclear. Here, we study (de)hydration reactions where associated solid density changes are predominantly balanced by porosity changes, with solid rock deformation playing a minor role. We propose a hypothesis for three scenarios of (de)hydration front propagation and test it using one-dimensional hydro-mechanical-chemical models. Our models couple porous fluid flow, solid rock volumetric deformation, and (de)hydration reactions described by equilibrium thermodynamics. We couple our transport model with reactions through fluid pressure: the fluid pressure gradient governs porous flow and the fluid pressure magnitude controls the reaction boundary. Our model validates the hypothesized scenarios and shows that the change in solid density across the reaction boundary, from lower to higher pressure, dictates whether hydration or dehydration fronts propagate: decreasing solid density causes dehydration front propagation in the direction opposite to fluid flow while increasing solid density enables both hydration and dehydration front propagation in the same direction as fluid flow. Our models demonstrate that reactions can drive the propagation of (de)hydration fronts, characterized by sharp porosity fronts, into a viscous medium with zero porosity and permeability; such propagation is impossible without reactions, as porosity fronts become trapped. We apply our model to serpentinite dehydration reactions with positive and negative Clapeyron slopes and granulite hydration (eclogitization). We use the results of systematic numerical simulations to derive a new equation that allows estimating the transient, reaction-induced permeability of natural (de)hydration zones.
Diodontidae Billberg 1833
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Tetraodontiformes
Diodontidae

description: Family Diodontidae Billberg 1833 [correction of Van der Laan et al. 2014]
 Diodontiides Billberg 1833: 52 (Natio ≈ family) Diodon Linnaeus 1758 [Recent, omitted in Van der Laan et al. 2014]
 †Eodiodontidae Tavani 1955: 178 (family) † Eodiodon Casier 1952
 †Progymnodontinae Tavani 1955: 178 (subfamily) † Progymnodon Dames 1883
 †Pshekhadiodontinae Bannikov & Tyler in Tyler & Bannikov 2009: 703 (subfamily) † Pshekhadiodon Bannikov & Tyler 1997
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on pages 83-84, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
Tau lepton distributions in semileptonic B decays
Creators: name: Jezabek, Marek
name: Motyka, Leszek
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analytic formulae are given for order alpha_s perturbative QCD corrections to the double differential distribution of the tau lepton energy and the invariant mass of the tau + antineutrino system in semileptonic decays of the bottom quark. The corresponding distribution for B meson decays are obtained by combining these results and the nonperturbative QCD corrections calculated by Falk et al. The moments of the energy distribution of the tau lepton are calculated.
description: 20 pages, LaTeX (uses epsf.sty, fleqn macro), submitted to Nuclear Physics B. A Fortran version of the formulae given in this paper is available upon request from jezabek@hpjmiady.ifj.edu.pl or leszekm@thp1.if.uj.edu.pl
Additional file 1: of One-year costs of medical admissions with and without a 30-day readmission and enhanced risk adjustment
Creators: name: Zheng, Sarah
name: Amresh Hanchate
name: Shwartz, Michael
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1. Comparison of sample characteristics before vs. after propensity score matching. Table S2. Models of Medicare spending 1-year following index discharge (N = 4684). Table S3. Sensitivity of estimates to model functional form: Overall Medicare spending 1-year following index discharge (N = 4684). Table S4. Sensitivity of estimates to exclusions: Overall Medicare spending 1-year following index discharge. Exclusions B1. Keeping Eligible Admissions in the Second Year. Exclusions B2. Other Exclusions. (DOCX 36 kb)
Eocottidae Bannikov 2004
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Eocottidae

description: Family † Eocottidae Bannikov 2004
 † Eocottidae Bannikov 2004: 18 (family) † Eocottus Woodward 1901 [also as new subfamily] †Bassaniinae Bannikov 2004: 25 (subfamily) † Bassania Bannikov 2004 [type genus preoccupied by Bassania Walker 1860 in Lepidoptera; invalid, Art. 39]
 †Bassanichthyinae Bannikov 2006: 340 (subfamily) † Bassanichthys Bannikov 2006
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 85, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557
‘It just seems that they don’t act like men’: The influence of gender role stereotypes on women’s entrepreneurial innovation activities
Creators: name: Sundermeier, Janina
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Inclusive Innovation
subject: Women’s Entrepreneurship
subject: Symbolic Interactionism
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: The purpose of this study is to explore how gender role stereotypes influence women entrepreneurs in their innovation activities. To examine how women perceive and respond to stereotypes that deem them less capable of initiating innovation processes of creative destruction in Schumpeterian terms, I draw on symbolic interactionism. The ethnographic field study I conducted in an entrepreneurial ecosystem reveals that relevant actors and institutions still attribute women as exploring innovation potentials of limited scope, having higher risk awareness, and exploiting identified innovation potentials in niche rather than mainstream markets, while they are more often driven by emotions. To challenge these stereotypes and thrive in exploring and exploiting innovation potential, they need to invest considerable resources in legitimation efforts, building strategic alliances, and managing expectations. These findings contribute to the development of theory on the impact of gender on the performance of innovation activities.
Non-Fermi Liquid Behavior in U and Ce Alloys: Criticality, Disorder, Dissipation, and Griffiths-McCoy singularities
Creators: name: Neto, Antonio H. Castro
name: Jones, Barbara A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper we provide the theoretical basis for the problem of Griffiths-McCoy singularities close to the quantum critical point for magnetic ordering in U and Ce intermetallics. We show that the competition between Kondo effect and RKKY interaction can be expressed in Hamiltonian form and the dilution effect due to alloying leads to a quantum percolation problem driven by the number of magnetically compensated moments. We argue that the exhaustion paradox proposed by Nozières is explained when the RKKY interaction is taken into account. We revisited the one impurity and two impurity Kondo problem and showed that in the presence of particle-hole symmetry breaking operators the system flows to a line of fixed points characterized by coherent motion of the spins. This leads to a {\it cluster Kondo effect}. We calculate explicitly from the microscopic Hamiltonian the parameters which appear in all the response functions. We show that there is a maximum number $N_c$ of spins in the clusters such that above this number tunneling ceases to occur. These effects lead to a distribution of cluster Kondo temperatures which vanishes for finite clusters and therefore leads to strong magnetic response. From these results we propose a {\it dissipative quantum droplet model} which describes the critical behavior of metallic magnetic systems. This model predicts that in the paramagnetic phase there is a crossover temperature $T^*$ above which Griffiths-McCoy like singularities with power law behavior. Below $T^*$, however, a new regime dominated by dissipation occurs with stronger divergences. We estimate that $T^*$ is exponentially small with $N_c$.
description: 97 pages, 8 postscript figues
Effect of giant resonances on fluctuations of electromagnetic fields in heavy ion collisions
Creators: name: Zakharov, B. G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform quantum calculations of fluctuations of the electromagnetic fields in $AA$ collisions at RHIC and LHC energies. Calculations are performed with the help of the fluctuation-dissipation theorem accounting for the giant dipole and quadrupole resonances. We find that in the quantum picture the field fluctuations are much smaller than that predicted by the classical Monte-Carlo simulation with the Woods-Saxon nuclear density used in previous analyses.
description: 6 pages, 3 figures
Corundum-quartz metastability: the role of silicon diffusion in corundum
Creators: name: Schultze, Dina S.
name: Wirth, Richard
name: Wunder, Bernd
name: Wilke, Max
name: Loges, Anselm
name: Franz, Gerhard
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Metastability
subject: Corundum
subject: Quartz
subject: Diffusion
subject: Nanolayers
subject: Aluminium-silicates
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: The synthesis of the Al2SiO5 polymorphs kyanite, sillimanite and andalusite in a pure Al2O3–SiO2–H2O (ASH) system has long been known to be impeded. In order to decipher individual aspects of the reaction: corundum + SiO2aq, which repeatedly fails to produce thermodynamically stable Al2SiO5, we conducted experiments within the stability fields of kyanite and sillimanite (500–800 ℃; 0.2–1 GPa) with the aim of forming reaction coronas on corundum. Results showed that metastable corundum + quartz assemblages form persistently in pure ASH, even in Al2SiO5 seeded experiments, despite the presence of catalyzing fluid and evidence of fast reaction kinetics. Coronas on corundum spontaneously formed when additional components (Na, K, N, and Mg) were added to the experiment. In a similar experiment with baddeleyite (ZrO2) instead of corundum in silica saturated water, a zircon corona formed readily. This implies that nucleation and growth of Al2SiO5 is obstructed under conditions of Al and Si saturation in aqueous fluid, while both corundum and quartz saturated aqueous fluid are willing participants in other reactions towards stable corona formation. Instead of Al2SiO5 precipitation, an unexpected fluid-aided silica diffusion process into corundum was documented. The latter included the formation of nanometer wide hydrous silicate layers along the basal plane of the corundum host, which enhanced the silica diffusion rate drastically, leading to silica supersaturation in the host mineral, and ultimately to precipitation of quartz inside corundum. We conclude that the natural metastable assemblage of quartz and corundum is not necessarily the result of dry or fluid absent conditions, given that the aqueous fluid in experiments does not promote Al2SiO5 formation, but rather seems to support the formation and preservation of a metastable assemblage.
Constructing Arbitrarily Large Graphs with a Specified Number of Hamiltonian Cycles
Creators: name: Haythorpe, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A constructive method is provided that outputs a directed graph which is named a broken crown graph, containing $5n-9$ vertices and $k$ Hamiltonian cycles for any choice of integers $n \geq k \geq 4$. The construction is not designed to be minimal in any sense, but rather to ensure that the graphs produced remain non-trivial instances of the Hamiltonian cycle problem even when $k$ is chosen to be much smaller than $n$.
A longitudinal perspective to migrant health: Unpacking the immigrant health paradox in Germany
Creators: name: Ferrara, Alessandro
name: Grindel, Carla
name: Brunori, Claudia
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Healthy immigrant effect
subject: Unhealthy assimilation
subject: Immigrant health paradox
subject: Longitudinal data
subject: Fixed effects
subject: Germany
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: Previous research finds that recent immigrants are healthier than the native-born, while more established immigrants exhibit worse health, suggesting a process of unhealthy assimilation. However, previous literature is mostly based on cross-sectional data or on longitudinal analyses similarly failing to disentangle individual-level variation from between-individual confounding. Moreover, previous longitudinal studies are often limited in their study of different health outcomes (few and mostly subjective health), populations (sometimes only elderly individuals), time periods (short panels) and geographical contexts (mostly Australia, Canada and USA). We address these limitations by comparing the health trajectories of adult immigrants and natives in Germany over extended periods, using data from years 2002–2021 of the German Socio-Economic Panel (SOEP), and investigating a wide range of health outcomes, including self-assessed physical and mental health measures, diagnosed illnesses, and health behaviors. We employ a longitudinal approach that stratifies immigrants by age at arrival, and compares them to natives of the same age. This allows us to estimate both Hierarchical Linear Models and more rigorous Fixed Effects models to further address confounding. Cross-sectionally, we confirm previous literature's findings: recent immigrants are healthier than natives and established immigrants. Longitudinally, we find support for the unhealthy assimilation hypothesis concerning subjective health and mental health, but not for the others health indicators or behaviors. We interpret these findings as possible evidence of immigrants' reduced access to timely health care and emphasize the need for greater longitudinal research investigating migrant gaps in various health outcomes.
Virtual world16: Virtual design collaboration for the intersection of academia and industry
Creators: name: Schnabel, Marc Aurel
name: Kobayashi, Y
name: Pencreach, Y
name: Bennadji, A
name: Choi, D
name: Fiamma, P
name: Fukuda, T
name: Lo, TT
name: Narahara, T
name: Novak, M
name: Ron, R
name: Swarts, M
name: Terzidis, K
name: Tucker, T
name: Vital, R
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: Overthe past 13 years, the 'Worldl6'-group has collaborated face-to-face on various challenges that architectural design faces within VR, architecture, urban design, and its delivery to the professional industries. The focus of the collaboration is to foster pathways of academic research and developments to industries and professions. In 2020, due to the restrictions of the pandemic, the group had to rethink and redevelop how to collaborate meaningfully and become resilient: the Worldl6 collaborated akin to the Virtual Design Studios (VDS) of the Nineties for the first time exclusively virtually becoming the 'Virtual Worldl6'. The paper presents the group's various projects that are transformative to the praxis in VR architecture, design and urban design, and critically reflects on the lessons learned from VDS-paradigm.
Callipterygidae Jordan 1905
Creators: name: Laan, Richard Van Der
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Callipterygidae

description: Family † Callipterygidae Jordan 1905
 † Callipterygidae Jordan 1905: 501 (family) † Callipteryx Agassiz 1838
description: Published as part of Laan, Richard Van Der, 2018, Family-group names of fossil fishes, pp. 1-167 in European Journal of Taxonomy 466 on page 85, DOI: 10.5852/ejt.2018.466, http://zenodo.org/record/5557557