cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interaction of Werner and Bloom syndrome genes with p53 in familial breast cancer
Creators: name: Wirtenberger, Michael
name: Frank, Bernd
name: Hemminki, Kari
name: Klaes, Rüdiger
name: Schmutzler, Rita K.
name: Wappenschmidt, Barbara
name: Meindl, Alfons
name: Kiechle, Marion
name: Arnold, Norbert
name: Weber, Bernhard H. F.
name: Niederacher, Dieter
name: Bartram, Claus R.
name: Burwinkel, Barbara
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 570 Biowissenschaften, Biologie
subject: 610 Medizin

description: Mutations of the human RecQ helicase genes WRN and BLM lead to rare autosomal recessive disorders, Werner and Bloom syndromes, which are associated with premature ageing and cancer predisposition. We tested the hypothesis whether three polymorphic, non-conservative amino acid exchanges in WRN and BLM act as low-penetrance familial breast cancer risk factors. Moreover, we examined the putative impact of p53 MspI 1798G>A, which is completely linked to p53PIN3, a 16 bp insertion/duplication that has been associated with reduced p53 expression, on familial breast cancer risk. Genotyping analyses, performed on 816 BRCA1/2 mutation-negative German familial breast cancer patients and 1012 German controls, revealed a significant association of the WRN Cys1367Arg polymorphism with familial breast cancer (OR = 1.28, 95% CI 1.06-1.54) and high-risk familial breast cancer (OR = 1.32, 95% CI 1.06-1.65). The analysis of p53 MspI 1798G>A, which is completely linked to p53PIN3, showed a significantly increased familial breast cancer risk for carriers of the 16 bp insertion/duplication, following a recessive mode (OR = 2.15, 95% CI = 1.12-4.11). WRN Cys1367Arg, located in the C-terminus, the binding site of p53, is predicted to be damaging. The joint effect of WRN Cys1367Arg and p53 MspI resulted in an increased breast cancer risk compared to the single polymorphisms (OR = 3.39, 95% CI 1.19-9.71). In conclusion, our study indicates the importance of inherited variants in the WRN and p53 genes for familial breast cancer susceptibility.
Nonisothermal evaporation
Creators: name: Benilov, E. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Evaporation of a liquid layer on a substrate is examined without the often-used isothermality assumption -- i.e., temperature variations are accounted for. Qualitative estimates show that nonisothermality makes the evaporation rate depend on the conditions the substrate is maintained at. If it is thermally insulated, evaporative cooling dramatically slows evaporation down; the evaporation rate tends to zero with time and cannot be determined by measuring the external parameters only. If, however, the substrate is maintained at a fixed temperature, the heat flux coming from below sustains evaporation at a finite rate -- deducible from the fluid's characteristics, relative humidity, and the layer's depth (whose importance has not been recognized before). The qualitative predictions are quantified using the diffuse-interface model applied to a liquid evaporating into its own vapor.
The Infrared Spin-Galvanic Effect in Semiconductor Quantum Wells
Creators: name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: Spin-galvanic effect; Quantum well; Infrared; Spin orientation
subject: 530 Physik

description: The spin-galvanic effect generated by homogeneous optical excitation with infrared circularly polarized radiation in quantum wells (QWs) is reviewed. The spin-galvanic current flow is driven by an asymmetric distribution of spin-polarized carriers in k-space of systems with lifted spin degeneracy due to k-linear terms in the Hamiltonian. Spin photocurrents provide methods to investigate the spin-splitting of the bandstructure and to make conclusion on the in-plane symmetry of QWs.
Experimental Separation of Rashba and Dresselhaus spin-splittings in Semiconductor Quantum Wells
Creators: name: Ganichev, Sergey
name: Belkov, Vassilij
name: Golub, Leonid
name: Ivchenko, Eougenious
name: Schneider, Petra
name: Giglberger, Stephan
name: Eroms, Jonathan
name: DeBoeck, J.
name: Borghs, G.
name: Wegscheider, Werner
name: Weiss, Dieter
name: Prettl, Wilhelm
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: 530 Physik

description: The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements on n-type InAs QWs containing a two-dimensional electron gas (2DEG). This novel technique makes use of the angular distribution of the spin-galvanic effect at certain directions of spin orientation in the plane of a QW. The ratio of the relevant Rashba and Dresselhaus coefficients can be deduced directly from experiment and does not relay on theoretically obtained quantities. Thus our experiments open a new way to determine the different contributions to spin-orbit coupling.
The solar magnetic field since 1700: II. Physical reconstruction of total, polar and open flux
Creators: name: Jiang, Jie
name: Cameron, Robert H.
name: Schmitt, Dieter
name: Schuessler, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have used semi-synthetic records of emerging sunspot groups based on sunspot number data as input for a surface flux transport model to reconstruct the evolution of the large-scale solar magnetic field and the open heliospheric flux from the year 1700 onward. The statistical properties of the semi-synthetic sunspot group records reflect those of the observed the Royal Greenwich Observatory photoheliographic results. These include correlations between the sunspot numbers and sunspot group latitudes, longitudes, areas and tilt angles. The reconstruction results for the total surface flux, the polar field, and the heliospheric open flux (determined by a current sheet source surface extrapolation) agree well with the available observational or empirically derived data and reconstructions. We confirm a significant positive correlation between the polar field during activity minimum periods and the strength of the subsequent sunspot cycle, which has implications for flux transport dynamo models for the solar cycle. Just prior to the Dalton minimum, at the end of the 18th century, a long cycle was followed by a weak cycle. We find that introducing a possibly `lost' cycle between 1793 and 1800 leads to a shift of the minimum of the open flux by 15 years which is inconsistent with the cosmogenic isotope record.
description: A&A, accepted
Поселення Х-ХІІІ ст біля с.Автуничі
Creators: name: Моця, Олександр
name: Орлов, Руслан
name: Коваленко В.П.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Моця О.П., Орлов Р.С., Коваленко В.П. та ін. Поселення Х-ХІІІ ст біля с.Автуничі — Південноруське село ІХ-ХІІІст (Нові пам’ятки матеріальної культури). - Київ, 1997. - с.34-68.
The unboundedness of the maximal directional Hilbert transform
Creators: name: Marinelli, Alessandro
Publisher: name: University of British Columbia
Year: 2018

description: In this dissertation we study the maximal directional Hilbert transform operator associated with a set U of directions in the n-dimensional Euclidean space. This operator shall be denoted by ℋU. We discuss in detail the proof of the (p; p)-weak unboundedness of ℋU in all dimensions n ≥ 2 and all Lebesgue exponents 1 < p < +∞ if U contains infinitely many directions in Rn. This unboundedness result for ℋU is an immediate consequence of a lower estimate for ||ℋU||_Lp(ℝn) → Lp(ℝn) that we prove if the cardinality of U is finite. In this case, we show that ||ℋU||_Lp(ℝn) → Lp(ℝn) is bounded from below by the square root of √log(#U) up to a positive constant depending only on p and n, for any exponent p in the range 1 < p < +∞ and any n ≥ 2. These results were first proved by G. A. Karagulyan ([17]) in the case n = p = 2.
Topological edge states in equidistant arrays of Lithium Niobate nano-waveguides
Creators: name: Gorbach, Andrey V.
name: Beer, Jesper
name: Souslov, Anton
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report that equidistant 1D arrays of thin-film Lithium Niobate nano-waveguides generically support topological edge states. Unlike conventional coupled-waveguide topological systems, the topological properties of these arrays are dictated by the interplay between intra- and inter-modal couplings of two families of guided modes with different parities. Exploiting two modes within the same waveguide to design a topological invariant allows us to decrease the system size by a factor of two and substantially simplify the structure. We present two example geometries where topological edge states of different types (based on either quasi-TE or quasi-TM modes) can be observed within a wide range of wavelengths and array spacings.
Radio frequency readout of electrically detected magnetic resonance in phosphorus-doped silicon MOSFETs
Creators: name: van Beveren, Laurens H. Willems
name: Huebl, Hans
name: Morello, Andrea
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate radio frequency (RF) readout of electrically detected magnetic resonance in phosphorus-doped silicon metal-oxide field-effecttransistors (MOSFETs), operated at liquid helium temperatures. For the first time, the Si:P hyperfine lines have been observed using radio frequency reflectometry, which is promising for high-bandwidth operation and possibly time-resolved detection of spin resonance in donor-based semiconductor devices. Here we present the effect of microwave (MW) power and MOSFET biasing conditions on the EDMR signals.
description: 2 pages, 3 figures
Magnetic field effect on tunnel ionization of deep impurities by terahertz radiation
Creators: name: Ganichev, Sergey
name: Danilov, Sergey
name: Sollinger, M.
name: Zimmermann, J.
name: Moskalenko, A.
name: Perel, V.
name: Yassievich, I.
name: Back, Christian
name: Prettl, Wilhelm
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Tunnel ionization; Terahertz radiation; Deep centers; Magnetic field
subject: 530 Physik

description: A suppression of tunnelling ionization of deep impurities in terahertz frequency electric fields by a magnetic field is observed. It is shown that the ionization probability at external magnetic field, B; oriented perpendicular to the electric field of terahertz radiation, E; is substantially smaller than that at B jj E: The effect occurs at low temperatures and high magnetic fields.
Revealing the hidden dynamics of confined water in acrylate polymers: Insights from hydrogen-bond lifetime analysis
Creators: name: Shikata, Kokoro
name: Kikutsuji, Takuma
name: Yasoshima, Nobuhiro
name: Kim, Kang
name: Matubayasi, Nobuyuki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Polymers contain functional groups that participate in hydrogen bond (H-bond) with water molecules, establishing a robust H-bond network that influences bulk properties. This study utilized molecular dynamics (MD) simulations to examine the H-bonding dynamics of water molecules confined within three poly(meth)acrylates: poly(2-methoxyethyl acrylate) (PMEA), poly(2-hydroxyethyl methacrylate) (PHEMA), and poly(1-methoxymethyl acrylate) (PMC1A). Results showed that H-bonding dynamics significantly slowed as the water content decreased. Additionally, the diffusion of water molecules and its correlation with H-bond breakage were analyzed. Our findings suggest that when the H-bonds between water molecules and the methoxy oxygen of PMEA are disrupted, those water molecules persist in close proximity and do not diffuse on a picosecond timescale. In contrast, the water molecules H-bonded with the hydroxy oxygen of PHEMA and the methoxy oxygen of PMC1A diffuse concomitantly with the breakage of H-bonds. These results provide an in-depth understanding of the impact of polymer functional groups on H-bonding dynamics.
description: 11 pages, 8 figures for main text, 10 pages for supplementary material, to appear in J. Chem. Phys
The man in the chair : the plot twist as literary fetish in early Edogawa Ranpo
Creators: name: Klafka, Katarina Lacy
Publisher: name: University of British Columbia
Year: 2018

description: In the history of crime-and-mystery fiction in Japan, few are as influential as Edogawa Ranpo (1894-1965). Despite this, Ranpo is often left out of discussions on crime-and-mystery fiction as a global genre; further, when he is discussed, his more orthodox detective fiction tends to be the focus of study. By examining four of Ranpo’s non/pseudo-detective early narratives, this thesis seeks to expand and nuance academic understanding of his significance in both the broader context of crime-and-mystery fiction and that of late Taishō (1912-1926) and early Shōwa (1926-1989) Japan. In critiquing tendencies to sum up Ranpo as an Edgar Allan Poe (1809-1849) facsimile, I propose innovation as a mediating factor between the analytic categories of “imitation” and “inspiration.” Exploring Ranpo’s sociohistorical background and positioning him within the nascence of ero-guro nansensu (“erotic-grotesque nonsense”), I elucidate how Ranpo at once influenced and was influenced by ero-guro sensibilities. Most crucially, I consolidate the concept of the literary fetish. Drawing on previous academic theorizations of the fetish, which position its critical aspect as an implicit, paradoxical, and inherently epistemological duality—the simultaneous recognition and disavowal of knowledge—I reformulate the fetish as a narrative device, arguing that, in these four stories, Ranpo elevates the plot twist to a literary fetish. Sensational and often sensual, the plot twists of these narratives occupy the climactic position in their narratives, and the climax they express cannot be satisfactorily resolved. Instead, the plot twist foregrounds questions of subjectivity, reality, and Truth, speaking to ero-guro sensibilities and to Ranpo’s contemporary sociopolitical flux. It is through intertextual analysis of Ranpo and Poe’s respective plot twists that I address their complicated history of identification, ultimately locating in those twists the strongest case for Ranpo’s distinction from Poe. And it is through intertextual analysis of Ranpo’s own works, and close examination of his plot twists, that I suggest narratives like these—which I term “mystery-plays” for the way that they play with mystery—most seductively encourage his readers to think critically of what they have read, of their world, and of themselves.
3/2 Firefighters are not enough
Creators: name: Feldheim, Ohad N.
name: Hod, Rani
Publisher: name: arXiv
Year: 2010
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: G.2.2
subject: 05C57, 05C63, 90B10, 91A43, 91A50

description: The firefighter problem is a monotone dynamic process in graphs that can be viewed as modeling the use of a limited supply of vaccinations to stop the spread of an epidemic. In more detail, a fire spreads through a graph, from burning vertices to their unprotected neighbors. In every round, a small amount of unburnt vertices can be protected by firefighters. How many firefighters per turn, on average, are needed to stop the fire from advancing? We prove tight lower and upper bounds on the amount of firefighters needed to control a fire in the Cartesian planar grid and in the strong planar grid, resolving two conjectures of Ng and Raff.
description: 8 pages
Political Changes in Turkey and the Future of Turkey-EU Relations: From Convergence to Conflict?
Creators: name: Eralp, Atila
name: Göksel, Asuman
name: Lindgaard, Jakob
Publisher: name: Zenodo
Year: 2017
Subjects: European Union; Turkey; EU-Turkey Relations; Democratization; Civil-military Relations; Kurdish Question; Foreign Policy, Process-Tracing, Political History

description: FEUTURE Online Paper No. 12

This paper presents an analysis of the political changes in Turkey since 1999, through a process-tracing exercise for four political drivers – namely democratisation, civil-military relations, the Kurdish question and foreign policy orientation- that unfold these changes under three periods of Turkey’s political history (1999-2002; 2007-2013; 2013-present); and secondly presenting an assessment of which of the three FEUTURE scenarios for Turkey-EU relations—convergence, cooperation or conflict —is the most likely to obtain in the near future on the basis of these drivers. With the ever rising degrees of unpredictability in international relations to the side, the paper argues that the political changes in Turkey during the AKP reign are likely to escalate the already conflict-ridden relationship between Turkey and European Union, but also lays bare the perhaps more important questions of how and why this is likely to be the case.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 692976. This publication reflects the views only of the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
Demonstration of Rashba spin splitting in GaN-based heterostructures
Creators: name: Weber, Wolfgang
name: Ganichev, Sergey
name: Kvon, Z. D.
name: Belkov, Vassilij
name: Golub, Leonid
name: Danilov, Sergey
name: Weiss, Dieter
name: Prettl, Wilhelm
name: Cho, Hyun-Ick
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: The circular photogalvanic effect, induced by infrared radiation, has been observed in (0001)-oriented n-GaN low dimensional structures. The photocurrent changes sign upon reversing the radiation helicity demonstrating the existence of spin splitting of the conduction band in k space in this type of materials. The observation suggests the presence of a sizeable Rashba type of spin splitting, caused by the built-in asymmetry at the AlGaN/GaN interface.
Discretization of inherent ODEs and the geometric integration of DAEs with symmetries
Creators: name: Kunkel, Peter
name: Mehrmann, Volker
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: differential-algebraic equation
subject: inherent ordinary differential equation
subject: geometric integration
subject: symplectic flow
subject: orthogonal flow

description: Discretization methods for differential-algebraic equations (DAEs) are considered that are based on the integration of an associated inherent ordinary differential equation (ODE). This allows to make use of any discretization scheme suitable for the numerical integration of ODEs. For DAEs with symmetries it is shown that the inherent ODE can be constructed in such a way that it inherits the symmetry properties of the given DAE and geometric properties of its flow. This in particular allows the use of geometric integration schemes with a numerical flow that has analogous geometric properties.
Chern Simons condensate from misaligned axions
Creators: name: Cao, Shuyang
name: Boyanovsky, Daniel
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain the non-equilibrium condensate of the Chern Simons density induced by a misaligned homogeneous coherent axion field in linear response. The Chern-Simons dynamical susceptibility is simply related to the axion self-energy, a result that is valid to leading order in the axion coupling but to all orders in the couplings of the gauge fields to other fields within or beyond the standard model except the axion. The induced Chern-Simons density requires renormalization which is achieved by vacuum subtraction. For ultralight axions of mass $m_a$ coupled to electromagnetic fields with coupling $g$, the renormalized high temperature contribution post-recombination is $\langle \vec{E}\cdot\vec{B}\rangle(t) = -\frac{g\,π^2\,T^4}{15} \,\overline{a}(t)+ \frac{g \,m^2_a\,T}{16\,π}\,\dot{\overline{a}}(t) $ with $\overline{a}(t)$ the dynamical homogeneous axion condensate. We conjecture that emergent axion-like quasiparticle excitations in condensed matter systems may be harnessed to probe cosmological axions and the Chern-Simons condensate. Furthermore, it is argued that a misaligned axion can also induce a non-abelian Chern-Simons condensate of similar qualitative form, and can also ``seed'' chiral symmetry breaking and induce a neutral pion condensate after the QCD phase transition.
description: more comments, published version
MS6 SSHOC web platform continuous marketplace integration with SSHOC service offer 2/3
Creators: name: Willems, Marieke
name: Parker, Stephanie
Publisher: name: Zenodo
Year: 2022

description: As defined in the SSHOC workplan, task 2.3 SSHOC web presence covers all activities related to the design, development, roll-out and continuous update of the SSHOC web platform. Evolving the SSHOC web platform ensures a service-oriented approach to the SSHOC marketplace developed in WP7, acting as the main project entry point with a multi-view of the SSH landscape, according to the main research lines of the ERICs involved, namely Art and Humanities, Social Science, Linguistics. The SSHOC web platform is conceived and structured to ensure visibility and easy access to the technologies and services resulting from WP3, as well as innovations mechanisms in data production (WP4), use cases (WP5) and training materials (WP6), targeting data producers and data re-users in the SSH disciplines, as well as industry players. The web platform will also serve as the main repository for all published content and allow access to project deliverables and external resources. In terms of features, its design allows specific sections dedicated to events and workshops; sections to collect user feedbacks and online surveys, and optionally host any software repository developed within SSHOC, with direct access points to the ERICs websites and other relevant websites, existing catalogues and virtual labs. This task also provides branding for the Marketplace (WP7) and support to improve its Graphical User Interface (GUI) and end-user friendliness. Specific branding of the new services can also be provided, making their look & feel homogeneous under the SSHOC umbrella. In M28, April 2021, the fourth iteration of the SSHOC web platform was achieved (Milestone 6), this document outlines the milestone, its role and the means of verification to its achievement.
Phase diagram of weak-magnetic-field quantum Hall transition quantified from classical percolation
Creators: name: Ortuño, M.
name: Somoza, A. M.
name: Mkhitaryan, V. V.
name: Raikh, M. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider magnetotransport in high-mobility 2D electron gas in a non-quantizing magnetic field. We employ a weakly chiral network model to test numerically the prediction of the scaling theory that the transition from an Anderson to a quantum Hall insulator takes place when the Drude value of the non-diagonal conductivity is equal to 1/2. The weaker is the magnetic field the harder it is to locate a delocalization transition using quantum simulations. The main idea of the present study is that the position of the transition does not change when a strong local inhomogeneity is introduced. Since the strong inhomogeneity suppresses interference, transport reduces to classical percolation. We show that the corresponding percolation problem is bond percolation over two sublattices coupled to each other by random bonds. Simulation of this percolation allows to access the domain of very weak magnetic fields. Simulation results confirm the criterion σ_{xy}=1/2 for values σ_{xx}\sim 10, where they agree with earlier quantum simulation results. However for larger σ_{xx} we find that the transition boundary is described by σ_{xy} σ_{xx}^k with k= 0.5, i.e., the transition takes place at higher magnetic fields. The strong inhomogeneity limit of magnetotransport in the presence of a random magnetic field, pertinent to composite fermions, corresponds to a different percolation problem. In this limit we find for the delocalization transition boundary σ_{xy} σ_{xx}^{0.6}.
description: 12 pages, 13 figures
HOOV: Hand Out-Of-View Tracking for Proprioceptive Interaction using Inertial Sensing
Creators: name: Streli, Paul
name: Armani, Rayan
name: Cheng, Yi Fei
name: Holz, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.2; I.5; H.5

description: Current Virtual Reality systems are designed for interaction under visual control. Using built-in cameras, headsets track the user's hands or hand-held controllers while they are inside the field of view. Current systems thus ignore the user's interaction with off-screen content -- virtual objects that the user could quickly access through proprioception without requiring laborious head motions to bring them into focus. In this paper, we present HOOV, a wrist-worn sensing method that allows VR users to interact with objects outside their field of view. Based on the signals of a single wrist-worn inertial sensor, HOOV continuously estimates the user's hand position in 3-space to complement the headset's tracking as the hands leave the tracking range. Our novel data-driven method predicts hand positions and trajectories from just the continuous estimation of hand orientation, which by itself is stable based solely on inertial observations. Our inertial sensing simultaneously detects finger pinching to register off-screen selection events, confirms them using a haptic actuator inside our wrist device, and thus allows users to select, grab, and drop virtual content. We compared HOOV's performance with a camera-based optical motion capture system in two folds. In the first evaluation, participants interacted based on tracking information from the motion capture system to assess the accuracy of their proprioceptive input, whereas in the second, they interacted based on HOOV's real-time estimations. We found that HOOV's target-agnostic estimations had a mean tracking error of 7.7 cm, which allowed participants to reliably access virtual objects around their body without first bringing them into focus. We demonstrate several applications that leverage the larger input space HOOV opens up for quick proprioceptive interaction, and conclude by discussing the potential of our technique.
description: Accepted at 2023 CHI Conference on Human Factors in Computing Systems
Resonant inversion of circular photogalvanic effect in n-doped quantum wells,
Creators: name: Ganichev, Sergey
name: Belkov, Vassilij
name: Schneider, Petra
name: Ivchenko, Eougenious
name: Tarasenko, Sergey
name: Schuh, Dieter
name: Wegscheider, Werner
name: Weiss, Dieter
name: Prettl, Wilhelm
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik

description: We show that the sign of the circular photogalvanic effect can be changed by tuning the radiation frequency of circularly polarized light. Here resonant inversion of the photogalvanic effect has been observed for direct intersubband transition in n-type GaAs quantum well structures. This inversion of the photon helicity driven current is a direct consequence of the lifting of the spin degeneracy due to k-linear terms in the Hamiltonian in combination with energy and momentum conservation and optical selection rules.
Population-level studies of the incremental economic burden of systemic autoimmune rheumatic diseases
Creators: name: McCormick, Natalie
Publisher: name: University of British Columbia
Year: 2020

description: In systemic autoimmune rheumatic diseases (SARDs), immune dysregulation leads to systemic inflammation, organ damage, complications, and disability. I examined the longitudinal, incremental direct medical costs of newly-diagnosed SARDs, incremental productivity costs, and impact of socioeconomic status (SES) on costs, at the general population level. Methods: Nine population-based cohorts, one for each SARD, were identified from the administrative health databases of the province of British Columbia (BC), Canada. Nine non-SARD comparison cohorts were selected from the general population of BC, and matched to each SARD cohort on age, sex, and index-year. Direct Medical Costs: Administrative data captured provincially-funded outpatient encounters and hospitalisations, and all dispensed medications. From these data, I estimated direct medical costs of each SARD and non-SARD cohort for up to five years after diagnosis/index date. I used generalised linear models to determine incremental costs of each SARD overall, and by SES group, controlling for covariates, and incremental costs of systemic lupus erythematosus (SLE, the most common SARD) before diagnosis. Productivity Costs: Random sample of the population-based cohorts completed a survey on absenteeism and presenteeism (working at reduced levels/efficiency) from paid and unpaid work. Survey data were used to determine adjusted, incremental lost productivity costs of three SARDs: SLE, systemic sclerosis (SSc), and Sjogren’s (SjS). Results: Direct Medical Costs: I identified 8,858 incident adult SARD cases for the years 1996-2010 (79.8% female) and 32,727 non-SARDs (79.0% female). Adjusted mean per-person-year incremental costs (over-and-above non-SARDs’) ranged from $7,851 to $54,061 2013 CDN, mainly from hospitalisations. For nearly every SARD, incremental costs of the low-SES exceeded the high-SES, by ~$2,000-$3,000 per-person-year. In each of the five pre-index years, adjusted costs for SLE were significantly greater than non-SLE; male sex and low SES were associated with greater costs among SLE. Productivity Costs: 671 surveys were completed: SLE=167, SSc=42, SjS=90, and non-SARDs=375. Adjusted incremental productivity costs averaged $4,494, $3,582, and $4,357 annually for SLE, SSc, and SjS, respectively. Major contributors were unemployment, presenteeism from paid work, and impairments with unpaid work. Conclusion: These novel findings should inform health resource allocation, and ongoing research to improve outcomes and reduce costs in these chronic diseases.
Standardization of test particles by trial-based approximation of the damaging potential of manufacturing swarfs
Creators: name: Piotter, V.
name: Plewa, K.
name: Klein, A.
name: Brag, P.
name: Herzfeldt, M.
name: Umbach, S.
Publisher: name: VDE Verlag
Year: 2021

description: Particulate residues originating from manufacturing and assembly processes can cause severe incidents in automobile powertrains or safety-relevant modules. Robustness validation and tribological studies require synthetic test contamination to imitate the particulate residues. A collaborative research project was started to evaluate whether such particles could be produced with high reproducibility and if they would reveal sufficient damage potential. To enable future mass production micro powder injection molding (MicroPIM) was chosen as manufacturing process with the lowest tolerances and best reproducibility. For this purpose micro suitable feedstocks containing 42CrMo4 steel powders had to be developed. Additionally, micro mold inserts incorporating free-formed surfaces had been used for the first time. The damage potential of the test particles was evaluated based on trials using journal bearing and shift valve test rigs. Furthermore, test particles and particulate debris from assembly processes were analyzed by light microscopy and micro computer tomography in order to check the fit of characteristics.
Spin galvanic effect due to optical spin orientation in n-type GaAs quantum well structures
Creators: name: Ganichev, Sergey
name: Schneider, Petra
name: Belkov, Vassilij
name: Ivchenko, Eougenious
name: Tarasenko, Sergey
name: Wegscheider, Werner
name: Weiss, Dieter
name: Schuh, Dieter
name: Clarke, D.
name: Merrick, M.
name: Murdin, B.
name: Murzyn, P.
name: Phillips, P.
name: Pidgeon, C.
name: Beregulin, Eugene
name: Prettl, Wilhelm
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik

description: Under oblique incidence of circularly polarized infrared radiation the spin-galvanic effect ~SGE! has been unambiguously observed in ~001!-grown n-type GaAs quantum well structures in the absence of any external magnetic field. Resonant intersubband transitions have been obtained making use of the tunability of the free-electron laser FELIX. A microscopic theory of the SGE for intersubband transitions has been developed, which is in good agreement with experimental findings.
On the road towards multidimensional tori
Creators: name: Kuznetsov, A. P.
name: Sataev, I. R.
name: Turukina, L. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The problem of persistence of four-frequency tori is considered in models represented by the coupled periodically driven self-oscillators. We show that the adding the third oscillator gives rise to destruction of the three-frequency tori, with appearance of regions of either chaotic attractors or four-frequency tori. As the coupling strength decreases, the four-frequency tori dominate, and the amplitude threshold of their occurrence vanishes. Also, for three oscillators, a domain of complete synchronization of the system by the external driving can disappear.
title: Crise na Venezuela: imigração e xenofobia – um olhar documental sobre o acolhimento (ou não) no Brasil
title: Crisis in Venezuela: immigration and xenophobia – a documentary analysis of the Brazilian reception myth
titleType: AlternativeTitle
Creators: name: Pires da Silva Luz, Leandro
Publisher: name: Zenodo
Year: 2019
Subjects: Venezuela
imigração
Brasil
Xenofobia
Jornalismo
journalism
Brazil
Documentário
Documentary
refugees
migração forçada
refugiados

description: Resumo:

Este relatório metodológico apresenta a fundamentação teórica, os objetivos e o processo de desenvolvimento do documentário “Brasil, um país de todos: do mito do acolhimento ao monstro da xenofobia”, produzido como Trabalho de Conclusão de Curso em Jornalismo na Universidade Cruzeiro do Sul (São Paulo, Brasil).

A obra investiga os impactos da crise político-econômica na Venezuela, com ênfase na migração forçada de seus cidadãos para o Brasil e nas diversas formas de preconceito, discriminação e xenofobia enfrentadas por essa população em território nacional. Por meio de entrevistas com famílias venezuelanas, assistentes sociais e psicólogos, o documentário busca compreender as contradições entre o discurso de hospitalidade brasileiro e a realidade excludente vivida pelos imigrantes.

A pesquisa adotou uma abordagem qualitativa, exploratória e bibliográfica, ancorada em teorias da comunicação, sociologia e direitos humanos. O material final — um documentário de 28 minutos — funciona como ferramenta de reflexão, promoção de empatia e combate à xenofobia.

---

Abstract:

This methodological report presents the theoretical foundation, objectives, and development process of the documentary “Brazil, a country for all: from the myth of hospitality to the monster of xenophobia”, developed as a Journalism graduation thesis at Universidade Cruzeiro do Sul (São Paulo, Brazil).

The project investigates the consequences of the Venezuelan crisis and the forced migration of its citizens to Brazil, with emphasis on the challenges faced by these migrants, such as prejudice, discrimination, and xenophobia. It combines bibliographic research and qualitative fieldwork through interviews with Venezuelan families, social workers, and psychologists.

The final product—a 28-minute documentary—serves as a tool for reflection, empathy, and awareness-raising, aiming to deconstruct stereotypes and foster a more humane reception of refugees in Brazilian society.
Asymptotically flat, stable black hole solutions in Einstein--Yang-Mills--Chern-Simons theory
Creators: name: Brihaye, Yves
name: Radu, Eugen
name: Tchrakian, D. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct finite mass, asymptotically flat black hole solutions in d=5 Einstein--Yang-Mills--Chern-Simons theory. Our results indicate the existence of a second order phase transition between Reissner-Nordstrom solutions and the non-Abelian black holes which generically are thermodynamically preferred. Some of the non-Abelian configurations are also stable under linear, spherically symmetric perturbations. In addition a solution in closed form describing an extremal black hole with non-Abelian hair is found for a special value of the Chern-Simons coupling constant.
description: 9 pages, 3 figures
The EOD Sound Response in Weakly Electric Fish
Creators: name: Kramer, Bernd
name: Tautz, Jürgen
name: Markl, Hubert
Publisher: name: Universität Regensburg
Year: 1981
Subjects: subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: 1. A spontaneous EOD response to sound is described in two gymnotoids of the pulse Electric Organ Discharge (EOD) type, Hypopomus and Gymnotus, and in one mormyrid, Brienomyrus (Figs. 2-4). 2. In all three species, the EOD response to the sound onset was a transient EOD rate increase. In the low EOD rate Hypopomus (3-6 EODs/s at rest) the first, second, or third EOD interval following sound onset was significantly shorter than the average EOD interval before stimulation. The shortest latency found was 100 ms, the longest ca. 1.2 s. Gymnotus (around 50 EODs/s at rest) responded similarly, but the third interval after sound onset was the first to be affected even at highest intensities (shortest latencies approx. 60 ms; latencies >0.5 s at low sound intensities). In Brienomyrus (4-8 EODs/s at rest) the response occurred already at the first EOD interval after sound onset. 3. An EOD sound response was recorded in Hypoporous and in Gymnotus up to 5,000 Hz sound frequency (in one Gymnotus individual: up to 7,000 Hz). Due to technical limitations the low frequency limit of the response could not be exactly determined: the fishes responded well even below 100 Hz. Hypopomus had its maximum sensitivity around 500 Hz (Fig. 5), Gymnotus around 1,000 Hz (Fig. 6). 4. In all three species the EOD sound response was graded with sound intensity (Hypopomus: Fig. 7). 5. No EOD response to sound was found in two gymnotoids of the wave type, Eigenmannia and Apteronotus, and in the gymnotoid pulse fish Rhamphichthys. A criterion is proposed by which it should be possible to predict whether or not a weakly electric fish species will show the EOD sound response. 6. It is concluded that the EOD response to sound is similar to EOD responses to other kinds of stimulation (light, touch, vibration, food, and even electrical). The possible biological function is discussed.
Thermal quantum gravity in a general background gauge
Creators: name: Brandt, F. T.
name: Frenkel, J.
name: McKeon, D. G. C.
name: Sakoda, G. S. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate in a general background gauge, to one-loop order, the leading logarithmic contribution from the graviton self-energy at finite temperature $T$, extending a previous analysis done at $T=0$. The result, which has a transverse structure, is applied to evaluate the leading quantum correction of the gravitational vacuum polarization to the Newtonian potential. An analytic expression valid at all temperatures is obtained, which generalizes the result obtained earlier at $T=0$. One finds that the magnitude of this quantum correction decreases as the temperature rises.
description: Added references
Bosonic gas as a Galactic Dark Matter Halo
Creators: name: Ureña-López, L. Arturo
name: Bernal, Argelia
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study in detail the properties of gravitationally-bounded multi-state configurations, made of spin-zero bosons, in the Newtonian regime. We show that the properties of such configurations, in particular their stability, depend upon how the particles are distributed in the different states they are composed of. Numerical techniques are used to distinguish between stable and unstable solutions, and to determine the final configurations they evolve towards to. Multi-state equilibrium configurations can be used as models of galactic halos made of scalar field dark matter, whose rotation curves appear more realistic than in the case of single-state configurations.
description: 14 pages, 22 figures
Automatic evaluation of FAIR metrics
Creators: name: Gaignard, Alban
name: Rosnet, Thomas
name: de Lamotte, Frédéric
name: Devignes, Marie-Dominique
Publisher: name: Zenodo
Year: 2021
Subjects: FAIR
Open Sciences

description: Short talk presenting the FAIR-Checker tool at the Elixir All-Hands 2021 event.
36M Progress report for the project "Environmental effects on physical properties of smart composites and FRP modified by carbonaceous nanofillers for structural applications"
Creators: name: Glaskova-Kuzmina, Tatjana
Publisher: name: Zenodo
Year: 2020
Subjects: 36M progress report

description: 36M Progress report for the project “Environmental effects on physical properties of smart composites and FRP modified by carbonaceous nanofillers for structural applications” (Project No. 1.1.1.2/VIAA/1/16/066). Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment”.
Revisiting the Red-giant Branch Hosts KOI-3886 and $ι$ Draconis. Detailed Asteroseismic Modeling and Consolidated Stellar Parameters
Creators: name: Campante, Tiago L.
name: Li, Tanda
name: Ong, J. M. Joel
name: Corsaro, Enrico
name: Cunha, Margarida S.
name: Bedding, Timothy R.
name: Bossini, Diego
name: Breton, Sylvain N.
name: Buzasi, Derek L.
name: Chaplin, William J.
name: Deal, Morgan
name: García, Rafael A.
name: Hill, Michelle L.
name: Hon, Marc
name: Huber, Daniel
name: Jiang, Chen
name: Kane, Stephen R.
name: Kayhan, Cenk
name: Kuszlewicz, James S.
name: Lillo-Box, Jorge
name: Mathur, Savita
name: Monteiro, Mário J. P. F. G.
name: Pereira, Filipe
name: Santos, Nuno C.
name: Serenelli, Aldo
name: Stello, Dennis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Asteroseismology is playing an increasingly important role in the characterization of red-giant host stars and their planetary systems. Here, we conduct detailed asteroseismic modeling of the evolved red-giant branch (RGB) hosts KOI-3886 and $ι$ Draconis, making use of end-of-mission Kepler (KOI-3886) and multi-sector TESS ($ι$ Draconis) time-series photometry. We also model the benchmark star KIC 8410637, a member of an eclipsing binary, thus providing a direct test to the seismic determination. We test the impact of adopting different sets of observed modes as seismic constraints. Inclusion of $\ell=1$ and 2 modes improves the precision on the stellar parameters, albeit marginally, compared to adopting radial modes alone, with $1.9$-$3.0\%$ (radius), $5$-$9\%$ (mass), and $19$-$25\%$ (age) reached when using all p-dominated modes as constraints. Given the very small spacing of adjacent dipole mixed modes in evolved RGB stars, the sparse set of observed g-dominated modes is not able to provide extra constraints, further leading to highly multimodal posteriors. Access to multi-year time-series photometry does not improve matters, with detailed modeling of evolved RGB stars based on (lower-resolution) TESS data sets attaining a precision commensurate with that based on end-of-mission Kepler data. Furthermore, we test the impact of varying the atmospheric boundary condition in our stellar models. We find mass and radius estimates to be insensitive to the description of the near-surface layers, at the expense of substantially changing both the near-surface structure of the best-fitting models and the values of associated parameters like the initial helium abundance, $Y_{\rm i}$. Attempts to measure $Y_{\rm i}$ from seismic modeling of red giants may thus be systematically dependent on the choice of atmospheric physics.
description: Accepted for publication in The Astronomical Journal (AJ)
E-books in practice: the librarian's perspective
Creators: name: Ball, Rafael
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: It has become unimaginable to provide information – particularly scientific information – without e-books. They have become part of today’s combination of media, which includes printed books and journals, e-journals, e-books, and databases. When e-books first appeared on the market, librarians very quickly formulated their key requirements. The most important requirement is functionality: it must be possible to look through a book chapter by chapter, and also to get a quick overview of a comprehensive monograph. Usage arrangements, including concurrent usage and use for interlibrary loans, are also important. The use of uniform technical standards increases the acceptance of e-books.
Activity-induced instabilities of brain organoids.
Creators: name: Thijssen, Kristian
name: Kusters, Guido L A
name: Doostmohammadi, Amin
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Funder: http://dx.doi.org/10.13039/501100007601; Grant(s): 722497
description: We present an analytical and numerical investigation of the activity-induced hydrodynamic instabilities in model brain organoids. While several mechanisms have been introduced to explain the experimental observation of surface instabilities in brain organoids, the role of activity has been largely overlooked. Our results show that the active stress generated by the cells can be a, previously overlooked, contributor to the emergence of surface deformations in brain organoids.