cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Noun modifier production in a comparison of graphic and non-graphic computer-assisted instruction
Creators: name: Long, Gayle E.
Publisher: name: University of British Columbia
Year: 2010

description: The problem under investigation in this study was to determine if identifying the components of effective CAI and augmenting them with appropriate graphics in order to produce a sentence writing program which provided students with semi-concrete experiences would result in improved student writing. Three versions of the Sentence Elaboration Programme (Pencil/Paper, Text/Computer, Graphics/Computer), were designed and produced by the experimenter for this study. The program focussed on increasing student use of noun modifiers in sentences. All three versions contained tutorial, drill and practice, and production (writing) sections. It was hypothesized that no differences would occur between the three treatment groups for the number of correct responses in the drill and practice or production sections of the program, or for the total lapsed time required by students to complete the various levels. It was also hypothesized that no significant differences would occur among the three treatment groups and the control group for use of noun modifiers in post-test sentence writing and compositions. The study was conducted with a sample of 56 grade 6 students from the same school. Students were randomly assigned within class to the four groups. In the pre-and post- testing procedures, all students wrote 10 sentences using words from their Spelling list, and two compositions. The control group received no additional instruction. The text of the instruction was the same for the three treatment groups. The Pencil/Paper group received the instruction in an oral presentation to the whole group, while both computer groups received the instruction individually on microcomputers. The Graphics/Computer group instruction included the addition of graphics. Analysis of covariance, using CTBS and pre-test scores as covariates, revealed significant differences among the groups for use of noun modifiers in post-test Spelling sentences, and examination of the group means indicated the Text/Computer group achieved the highest mean score. The analysis of covariance, using CTBS* scores as a covariate, also found significant differences among .the treatment groups for the number of correct responses in the drill and practice section of the program and for total lapsed time. The Pencil/Paper group had the highest mean score for drill and practice, and the Graphics/Computer group required the most time to complete the program. Although the program was effective in increasing the use of noun modifiers in Spelling sentences, the addition of graphics to the program did not increase its effectiveness. The use of the program did not result in an increase in noun modifiers in student compositions.
Additional file 6 of An innovative pharmacology curriculum for medical students: promoting higher order cognition, learner-centered coaching, and constructive feedback through a social pedagogy framework
Creators: name: McHugh, Douglas
name: Yanik, Andrew J.
name: Mancini, Michael R.
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 6. Percentage of students who failed formative small group wiki assignments and the percentage of failures due to timeliness, quality or authorship/citations/respect for M1 students 2014–2018.
La donna e il cavallo: persistenza di un paragone
Creators: name: Franzoni, Claudio
Publisher: name: La Rivista di Engramma
Year: 2021
Subjects: Female body
horse
filly
McLuhan
Aristotle
Phyllis
Balzac
topos

description: The comparison between woman and mare has a long and continuous history, from ancient Greece onwards. This essay tries to reconstruct this centuries-old history, exploring literature, the figurative arts, and popular culture, contending that at the root of this comparison stands the desire to describe metaphorically the seductive and disturbing force of the female body.
Optimized stray-field-induced enhancement of the electron spin precession by buried Fe gates
Creators: name: Meier, L.
name: Salis, G.
name: Moll, N.
name: Ellenberger, C.
name: Shorubalko, I.
name: Wahlen, U.
name: Ensslin, K.
name: Gini, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetic stray field from Fe gates is used to modify the spin precession frequency of InGaAs/GaAs quantum-well electrons in an external magnetic field. By using an etching process to position the gates directly in the plane of the quantum well, the stray-field influence on the spin precession increases significantly compared with results from previous studies with top-gated structures. In line with numerical simulations, the stray-field-induced precession frequency increases as the gap between the ferromagnetic gates is reduced. The inhomogeneous stray field leads to additional spin dephasing.
description: 4 pages, 2 figures
Finite-temperature phases of trapped bosons in a two-dimensional quasiperiodic potential
Creators: name: Ciardi, Matteo
name: Macrì, Tommaso
name: Cinti, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study a system of 2D trapped bosons in a quasiperiodic potential via ab initio Path Integral Monte Carlo simulations, focusing on its finite temperature properties, which have not yet been explored. Alongside the superfluid, normal fluid and insulating phases, we demonstrate the existence of a Bose glass phase, which is found to be robust to thermal fluctuations, up to about half of the critical temperature of the non-interacting system. Local quantities in the trap are characterized by employing zonal estimators, allowing us to trace a phase diagram; we do so for a set of parameters within reach of current experiments with quasi-2D optical confinement.
description: 9 pages, 7 figures
Additional file 1 of Melatonin activates ABCA1 via the BiP/NRF1 pathway to suppress high-cholesterol-induced apoptosis of mesenchymal stem cells
Creators: name: Kim, Jun Sung
name: Jung, Young Hyun
name: Lee, Hyun Jik
name: Chae, Chang Woo
name: Choi, Gee Euhn
name: Lim, Jae Ryong
name: Kim, Seo Yihl
name: Lee, Joo Eun
name: Han, Ho Jae
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Supplementary Table 1. Primer sequences for siRNA and micro RNA mimic. Supplementary Table 2. Primer sequences for mRNA and miRNA.
Pion freeze-out as seen through HBT correlations in heavy ion collisions from FAIR/AGS to RHIC energies
Creators: name: Li, Qingfeng
name: Bleicher, Marcus
name: Stoecker, Horst
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a systematic analysis of several HBT parameters in heavy ion collisions from $E_{\rm beam}=2$ AGeV to $\sqrt {s_{\rm NN}}=200$ GeV within the UrQMD transport approach and compare the results to experimental data where available. We find that the 'lifetime' of the emission source as calculated from $τ\sim \sqrt{R_O^{2}-R_S^{2}}$, is larger than the experimentally observed values at all investigated energies. The calculated volume of the pion source ($V_f$) is found to increase monotonously with increasing beam energy and the experimentally observed decrease of the measured $V_f$ at AGS is not seen. Finally, we calculate the mean free path $λ_f=0.5-1$ fm of pions at freeze-out and find a good description of the experimental data above the AGS energy region, supporting the suggestion of a universal kinetic decoupling criterion up to the highest RHIC energies.
description: 11 pages, 2 figs
Electrically probing photonic bandgap phenomena in contacted defect nanocavities
Creators: name: Hofbauer, F.
name: Grimminger, S.
name: Angele, J.
name: Böhm, G.
name: Meyer, R.
name: Amann, M. C.
name: Finley, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We demonstrate an electrically tunable two dimensional photonic crystal nanocavity containing InAs self assembled quantum dots. Photoluminescence and electroluminescence measurements are combined to probe the cavity mode structure and demonstrate a local electrical contact to the quantum dots. Measurements performed as a function of the electric field enable us to probe the capture, relaxation and recombination dynamics of photogenerated carriers inside the quantum dots emitting into a modified photonic environment. Furthermore, the two dimensional photonic crystal is probed by spatially dependent photocurrent spectroscopy indicating a 3.5x enhancement of the local radiative lifetime of the QDs inside the photonic crystal environment.
Critical metrics on $4$-manifolds with harmonic anti-self dual Weyl tensor
Creators: name: Viana, Emanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove that a $4$-dimensional simply connected, compact critical metric of the volume functional with harmonic anti-self dual Weyl tensor and boundary isometric to a standard sphere $\mathbb{S}^{3}$ is isometric to a geodesic ball in a simply connected space form $\mathbb{R}^{4}$, $\mathbb{H}^{4}$ or $\mathbb{S}^{4}.$
description: Fixed typos
Intrinsic and non-local Gilbert damping in polycrystalline nickel studied by Ti:Sapphire laser fs spectroscopy
Creators: name: Walowski, J.
name: Kaufmann, M. Djordjevic
name: Lenk, B.
name: Hamann, C.
name: McCord, J.
name: Münzenberg, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The use of femtosecond laser pulses generated by a Ti:Sapphire laser system allows us to gain an insight into the magnetization dynamics on time scales from sub-picosecond up to 1 ns directly in the time domain. This experimental technique is used to excite a polycrystalline nickel (Ni) film optically and probe the dynamics afterwards. Different spin wave modes (the Kittel mode, perpendicular standing spin-wave modes (PSSW) and dipolar spin-wave modes (Damon-Eshbach modes)) are identified as the Ni thickness is increased. The Kittel mode allows determination of the Gilbert damping parameter alpha extracted from the magnetization relaxation time tau_alpha. The non-local damping by spin currents emitted into a non-magnetic metallic layer of vanadium (V), palladium (Pd) and the rare earth dysprosium (Dy) are studied for wedge-shaped Ni films 1 nm-30 nm. The damping parameter increases from alpha=0.045 intrinsic for nickel to alpha>0.10 for the heavy materials, such as Pd and Dy, for the thinnest Ni films below 10 nm thickness. Also, for the thinnest reference Ni film thickness, an increased magnetic damping below 4 nm is observed. The origin of this increase is discussed within the framework of line broadening by locally different precessional frequencies within the laser spot region.
The Monte Carlo and fractional kinetics approaches to the underground anomalous subdiffusion of contaminants
Creators: name: Marseguerra, M.
name: Zoia, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This paper deals with a comparison of Fractional Derivative and Monte carlo approaches to the modelling of anomalous diffusion in the field of particle transport. The goal of this research is to provide a better insight on the behavior of (radioactive) contaminant tracers when flowing through heterogeneous media.
description: 17 pages, 18 figures
Additional file 1 of Predictive value of plasma proenkephalin and neutrophil gelatinase-associated lipocalin in acute kidney injury and mortality in cardiogenic shock
Creators: name: Jäntti, Toni
name: Tarvasmäki, Tuukka
name: Veli-Pekka Harjola
name: Pulkki, Kari
name: Turkia, Heidi
name: Sabell, Tuija
name: Tolppanen, Heli
name: Jurkko, Raija
name: Hongisto, Mari
name: Kataja, Anu
name: Sionis, Alessandro
name: Silva-Cardoso, Jose
name: Banaszewski, Marek
name: DiSomma, Salvatore
name: Mebazaa, Alexandre
name: Haapio, Mikko
name: Lassus, Johan
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 1 : Table S1. Areas under the receiver-operating characteristic curve for acute kidney injury occurring within 48 hours and 90-day all-cause mortality for P-PENK and P-NGAL at different time points. Table S2. Spearman correlations between P-PENK and P-NGAL and other variables at baseline. Table S3. Cross tabulation of index test results. Figure S1. Diagram of study sampling times. Figure S2. STARD flow diagram of study participants. A: AKI B: 90-day mortality. Figure S3. Kaplan–Meier survival curves stratified by a) P-PENK >105.7 pmol/mL at 24 hours and b) P-NGAL >151 ng/mL at 24 hours.
Research involvement among undergraduate students of a medical college in Kathmandu, Nepal: A descriptive cross-sectional study
Creators: name: Khadka, Manoj
name: Pant, Sakar
name: Budhathoki, Lee
Publisher: name: Zenodo
Year: 2023

description: This research proposal was awarded the Nepal Health Research Council (NHRC) Undergraduate Health Research Grant for the fiscal year 2079/2080 (2023).
A generalized Hirzebruch Riemann-Roch theorem
Creators: name: Ramadoss, Ajay C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14F99

description: This short note proves a generalization of the Hirzebruch Riemann-Roch theorem equivalent to the Cardy condition described in [1]. This is done using an earlier result [4] that explicitly describes what the Mukai pairing in [1] descends to in Hodge cohomology via the Hochschild-Kostant-Rosenberg map twisted by the root Todd genus.
description: 5 pages
Optimal quantum state reconstruction for cold trapped ions
Creators: name: Klimov, A. B.
name: Fernández, A.
name: Muñoz, C.
name: Saavedra, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the physical implementation of an optimal tomographic reconstruction scheme for the case of determining the state of a multi-qubit system, where trapped ions are used for defining qubits. The protocol is based on the use of mutually unbiased measurements and on the physical information described in H. Häffner \emph{et. al} [Nature \textbf{438}, 643-646 (2005)]. We introduce the concept of physical complexity for different types of unbiased measurements and analyze their generation in terms of one and two qubit gates for trapped ions.
description: Accepted for publication in Phys. Rev. A as Rap. Comm
The implementation of an art curriculum material : relationship between beliefs and practices
Creators: name: Hutson, Sonia
Publisher: name: University of British Columbia
Year: 2010

description: This study addresses the need for research pertaining to the influence of teacher conception and situational factors in the implementation of art curriculum materials. The study yields insights about how three teachers beliefs shaped their opinions of the merits and shortcomings of the teacher's guide, Surface Probe, and how specific situational factors influenced their use of the material. Data collection methodology included questionnaires, interviews, teacher logs and on-site observations in an attempt to make explicit the perceptions of the participants and the situational setting of an art program as it was implemented over an eight week period. Data was documented in three teacher profiles which were organized around the following considerations: teacher conception of art, use of the material, factors that influenced use, and interpretation of the results. Findings were discussed as strengths and concerns of the material and factors that influenced implementation. This information was interpreted into guidelines for the development of art curriculum materials. It was found that the material could be adapted by teachers of varying levels of art background and teaching experience. The material offered sufficient student experiences in the productive domain, but suggestions for imagery development to enhance the production activities became an emerging issue with two of the teachers. In the synopsis of factors that influenced implementation it was concluded that teacher conception and background experience in art were primary points that needed to be considered in curriculum development. Points to consider in the development of art curriculum materials are outlined. I am indebted to Kathy, Liz, and John for the time they devoted to the implementation of Surface Probe. I also express my gratitude to Dr. Graeme Chalmers, Dr. Walter Werner, and Dr. Donald Wilson for their support and criticism.
Additional file 1 of Development and validation of a prognostic COVID-19 severity assessment (COSA) score and machine learning models for patient triage at a tertiary hospital
Creators: name: Schöning, Verena
name: Liakoni, Evangelia
name: Baumgartner, Christine
name: Exadaktylos, Aristomenis K.
name: Hautz, Wolf E.
name: Atkinson, Andrew
name: Hammann, Felix
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 60506 Virology
subject: Computational Biology

description: Additional file 1. Common laboratory parameters and their correlation to the outcome (severe or non-severe COVID-19).
Singular p-homogenization for highly conductive fractal layers
Creators: name: Creo, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary: 35J62, 35B27. Secondary: 35B40, 74K15, 28A80

description: We consider a quasi-linear homogenization problem in a two-dimensional pre-fractal domain $Ω_n$, for $n\in\mathbb{N}$, surrounded by thick fibers of amplitude $\varepsilon$. We introduce a sequence of "pre-homogenized" energy functionals and we prove that this sequence converges in a suitable sense to a quasi-linear fractal energy functional involving a $p$-energy on the fractal boundary. We prove existence and uniqueness results for (quasi-linear) pre-homogenized and homogenized fractal problems. The convergence of the solutions is also investigated.
description: 29 pages, 2 figures
Impact of community structure on information transfer
Creators: name: Danon, Leon
name: Arenas, Alex
name: Diaz-Guilera, Albert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The observation that real complex networks have internal structure has important implication for dynamic processes occurring on such topologies. Here we investigate the impact of community structure on a model of information transfer able to deal with both search and congestion simultaneously. We show that networks with fuzzy community structure are more efficient in terms of packet delivery that those with pronounced community structure. We also propose an alternative packet routing algorithm which takes advantage of the knowledge of communities to improve information transfer and show that in the context of the model an intermediate level of community structure is optimal. Finally, we show that in a hierarchical network setting, providing knowledge of communities at the level of highest modularity will improve network capacity by the largest amount.
description: 6 pages, 5 figures, 1 table, figures, text and references updated
Some Insights in Superdiffusive Transport
Creators: name: Marseguerra, M.
name: Zoia, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we deal with high-order corrections for the Fractional Derivative approach to anomalous diffusion, in super-diffusive regime, which become relevand whenever one attempts to describe the behavior of particles close to normal diffusion.
description: 14 pages, 7 figures
Frustration, Area Law, and Interference in Quantum Spin Models
Creators: name: De, Aditi Sen
name: Sen, Ujjwal
name: Dziarmaga, Jacek
name: Sanpera, Anna
name: Lewenstein, Maciej
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study frustrated quantum systems from a quantum information perspective. Within this approach, we find that highly frustrated systems do not follow any general ''area law'' of block entanglement, while weakly frustrated ones have area laws similar to those of nonfrustrated systems away from criticality. To calculate the block entanglement in systems with degenerate ground states, typical in frustrated systems, we define a ''cooling'' procedure of the ground state manifold, and propose a frustration degree and a method to quantify constructive and destructive interference effects of entanglement.
description: 4 (+ epsilon) pages, 1 eps figure, RevTeX4; v1: 4 pages, 2 eps figures; v2: presentation improved, further models analyzed, published version
Dark Confinement and Chiral Phase Transitions: Gravitational Waves vs Matter Representations
Creators: name: Reichert, Manuel
name: Sannino, Francesco
name: Wang, Zhi-Wei
name: Zhang, Chen
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the gravitational-wave signal stemming from strongly coupled models featuring both, dark chiral and confinement phase transitions. We therefore identify strongly coupled theories that can feature a first-order phase transition. Employing the Polyakov-Nambu-Jona-Lasinio model, we focus our attention on SU(3) Yang-Mills theories featuring fermions in fundamental, adjoint, and two-index symmetric representations. We discover that for the gravitational-wave signals analysis, there are significant differences between the various representations. Interestingly we also observe that the two-index symmetric representation leads to the strongest first-order phase transition and therefore to a higher chance of being detected by the Big Bang Observer experiment. Our study of the confinement and chiral phase transitions is further applicable to extensions of the Standard Model featuring composite dynamics.
description: 29 pages, 12 figures, 4 tables; v2 matches journal published version
Additional file 2 of Development and validation of a prognostic COVID-19 severity assessment (COSA) score and machine learning models for patient triage at a tertiary hospital
Creators: name: Schöning, Verena
name: Liakoni, Evangelia
name: Baumgartner, Christine
name: Exadaktylos, Aristomenis K.
name: Hautz, Wolf E.
name: Atkinson, Andrew
name: Hammann, Felix
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 60506 Virology
subject: Computational Biology

description: Additional file 2. Score points in study and validation cohort.
Mechanical losses in low loss materials studied by Cryogenic Resonant Acoustic spectroscopy of bulk materials (CRA spectroscopy)
Creators: name: Zimmer, Anja
name: Nawrodt, Ronny
name: Heinert, Daniel
name: Schwarz, Christian
name: Hudl, Matthias
name: Koettig, Torsten
name: Vodel, Wolfgang
name: Tünnermann, Andreas
name: Seidel, Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mechanical losses of crystalline silicon and calcium fluoride have been analyzed in the temperature range from 5 to 300 K by our novel mechanical spectroscopy method, cryogenic resonant acoustic spectroscopy of bulk materials (CRA spectrocopy). The focus lies on the interpretation of the measured data according to phonon-phonon interactions and defect induced losses in consideration of the excited mode shape.
description: 4 pages, 4 figures, proceedings of the PHONONS 2007, submitted to Journal of Physics: Conference Series
Additional file 3 of Development and validation of a prognostic COVID-19 severity assessment (COSA) score and machine learning models for patient triage at a tertiary hospital
Creators: name: Schöning, Verena
name: Liakoni, Evangelia
name: Baumgartner, Christine
name: Exadaktylos, Aristomenis K.
name: Hautz, Wolf E.
name: Atkinson, Andrew
name: Hammann, Felix
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 60506 Virology
subject: Computational Biology

description: Additional file 3. External validation metrics.
High-redshift quasars and their host galaxies II: multiphase gas and stellar kinematics
Creators: name: Lupi, Alessandro
name: Volonteri, Marta
name: Decarli, Roberto
name: Bovino, Stefano
name: Silk, Joseph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Observations of $z \gtrsim 6$ quasars provide information on the early phases of the most massive black holes (MBHs) and galaxies. Current observations at sub-mm wavelengths trace cold and warm gas, and future observations will extend information to other gas phases and the stellar properties. The goal of this study is to examine the gas life cycle in a $z \gtrsim 6$ quasar: from accretion from the halo to the galaxy and all the way into the MBH, to how star formation and the MBH itself affect the gas properties. Using a very-high resolution cosmological zoom-in simulation of a $z=7$ quasar including state-of-the-art non-equilibrium chemistry, MBH formation, growth and feedback, we investigate the distribution of the different gas phases in the interstellar medium across cosmic time. We assess the morphological evolution of the quasar host using different tracers (star- or gas-based) and the thermodynamic distribution of the MBH accretion-driven outflows, finding that obscuration in the disc is mainly due to molecular gas, with the atomic component contributing at larger scales and/or above/below the disc plane. Moreover, our results also show that molecular outflows, if present, are more likely the result of gas being lifted near the MBH than production within the wind because of thermal instabilities. Finally, we also discuss how different gas phases can be employed to dynamically constrain the MBH mass, and argue that resolutions below $\sim 100$ pc yield unreliable estimates because of the strong contribution of the nuclear stellar component to the potential at larger scales.
description: 21 pages, 16 figures, 1 table, matches the accepted version
Two-stage evolution of magnetic correlations in spiral spin liquid material, Ca$_{10}$Cr$_{7}$O$_{28}$
Creators: name: Koo, Changhyun
name: Park, Jaena
name: Werner, Johannes
name: Lee, Suheon
name: Balz, Christian
name: Islam, A. T. M. Nazmul
name: Oshima, Yugo
name: Lake, Bella
name: Choi, Kwang-Yong
name: Klingeler, Rüdiger
Publisher: name: arXiv
Year: 2025
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an X-band and tunable high-frequency/high-field electron spin resonance (HF-ESR) study of single-crystalline Ca$_{10}$Cr$_{7}$O$_{28}$, which constitutes alternating antiferromagnetic and ferromagnetic kagome bilayers. At high temperatures, a phonon-assisted relaxation process is evoked to account for the pronounced increase of the linewidth in an exchange-narrowing regime ($k_{\rm B}T\gg J$). In contrast, at low temperatures ($k_{\rm B}T\lesssim J$), a power-law behavior in line narrowing is observed. Our data reveal two distinct power-law regimes for the linewidth which crossover at $T^*\approx 7.5$~K. Notably, the intriguing evolution of the ESR linewidth in this alternating kagome bilayer system with opposite sign of exchange interactions highlights distinct spin dynamics compared to those in a uniform kagome antiferromagnet.
description: 7 pages, 6 figures
Imaging mechanical vibrations in suspended graphene sheets
Creators: name: Garcia-Sanchez, D.
name: van der Zande, A. M.
name: Paulo, A. San
name: Lassagne, B.
name: McEuen, P. L.
name: Bachtold, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We carried out measurements on nanoelectromechanical systems based on multilayer graphene sheets suspended over trenches in silicon oxide. The motion of the suspended sheets was electrostatically driven at resonance using applied radio-frequency voltages. The mechanical vibrations were detected using a novel form of scanning probe microscopy, which allowed identification and spatial imaging of the shape of the mechanical eigenmodes. In as many as half the resonators measured, we observed a new class of exotic nanoscale vibration eigenmodes not predicted by the elastic beam theory, where the amplitude of vibration is maximum at the free edges. By modeling the suspended sheets with the finite element method, these edge eigenmodes are shown to be the result of non-uniform stress with remarkably large magnitudes (up to 1.5 GPa). This non-uniform stress, which arises from the way graphene is prepared by pressing or rubbing bulk graphite against another surface, should be taken into account in future studies on electronic and mechanical properties of graphene.
Erfolgsfaktoren und Misserfolgsfaktoren im Low Budget Guerilla Marketing
Creators: name: Nufer, Gerd
name: Kurzke, Sophie Marie
Publisher: name: Universität Tübingen
Year: 2019
Subjects: subject: Marketing , Management
subject: 330
subject: Guerilla Marketing
subject: Guerrilla Marketing

description: Eine hohe Werbewirkung erreichen, die sich durch Kreativität von Wettbewerbern absetzt und das mit geringen finanziellen Mitteln – das ist eine Wunschvorstellung für viele Start-Ups. Doch offen bleibt die Frage nach dem Wie. Eine Möglichkeit, dieses Ziel zu erreichen, bildet das Low Budget Guerilla Marketing. Die vorliegende Arbeit beschäftigt sich damit, wie Guerilla Marketing mit einem über-schaubaren Budget erfolgreich umgesetzt werden kann. Den Rahmen für die Analyse bildet die Erfolgsfaktorenforschung. Erarbeitet werden entscheidende Erfolgs- und Misserfolgsfak-toren des Low Budget Guerilla Marketing.
Bubble Correlation in First-Order Phase Transitions
Creators: name: De Luca, V.
name: Franciolini, G.
name: Riotto, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Making use of both the stochastic approach to the tunneling phenomenon and the threshold statistics, we offer a simple argument to show that critical bubbles may be correlated in first-order phase transitions and biased compared to the underlying scalar field spatial distribution. This happens though only if the typical energy scale of the phase transition is sufficiently high. We briefly discuss possible implications of this result, e.g. the formation of primordial black holes through bubble collisions.
description: 6 pages, 1 figure. v2: matching published version
Normal and Anomalous Transport across an Interface: Monte Carlo and Analytical Approach
Creators: name: Marseguerra, M.
name: Zoia, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we investigate the behavior of particles crossing a neat interface between two media. A Monte Carlo and analytical model, based on fractional derivatives, are presented and discussed in detail, together with a comparison. Anomalous and normal diffusion are consdered.
description: 19 pages, 6 figures
Wave-driven mass loss of stripped envelope massive stars: progenitor-dependence, mass ejection, and supernovae
Creators: name: Leung, Shing-Chi
name: Wu, Samantha
name: Fuller, Jim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The discovery of rapidly rising and fading supernovae powered by circumstellar interaction has suggested the pre-supernova mass eruption phase as a critical phenomenon in massive star evolution. It is important to understand the mass and radial extent of the circumstellar medium (CSM) from theoretically predicted mass ejection mechanisms. In this work, we study the wave heating process in massive hydrogen-poor stars, running a suite of stellar models in order to predict the wave energy and pre-explosion time scale of surface energy deposition. We survey stellar models with main sequence progenitor masses from 20--70 $M_{\odot}$ and metallicity from 0.002 to 0.02. Most of these models predict that less than $\sim \! 10^{47} \, {\rm erg}$ is deposited in the envelope, with the majority of the energy deposited in the last week of stellar evolution. This translates to CSM masses less than $\sim \! 10^{-2} \, M_\odot$ that extend to less than $\sim \! 10^{14} \, {\rm cm}$, too small to greatly impact the light curves or spectra of the subsequent supernovae, except perhaps during the shock breakout phase. However, a few models predict somewhat higher wave energy fluxes, for which we perform hydrodynamical simulations of the mass ejection process. Radiative transfer simulations of the subsequent supernovae predict a bright but brief shock-cooling phase that could be detected in some type Ib/c supernovae if they are discovered within a couple days of explosion.
description: 19 pages, 36 figures. Accepted for publication in Astrophysical Journal, submitted at 21 September 2021, accepted at 1 October 2021, published at 9 December 2021
Dynamic scaling approach to study time series fluctuations
Creators: name: Balankin, Alexander S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We propose a new approach for properly analyzing stochastic time series by mapping the dynamics of time series fluctuations onto a suitable nonequilibrium surface-growth problem. In this framework, the fluctuation sampling time interval plays the role of time variable, whereas the physical time is treated as the analog of spatial variable. In this way we found that the fluctuations of many real-world time series satisfy the analog of the Family-Viscek dynamic scaling ansatz. This finding permits to use the powerful tools of kinetic roughening theory to classify, model, and forecast the fluctuations of real-world time series.
description: 25 pages, 7 figures, 1 table
Outflow and Infall in a Sample of Massive Star Forming Regions II: Large Scale Kinematics
Creators: name: Klaassen, P. D
name: Wilson, C. D
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present maps of seven sources selected from Klaassen & Wilson (2007a) in SiO (J=8-7) and HCO$^+$ and H$^{13}$CO$^+$ (J=4-3) which were obtained using HARP-B on the James Clerk Maxwell Telescope. We find that four out of our seven sources have infall signatures based on their HCO$^+$ emission profiles. From our maps, we have determined the extent of both the outflowing and infalling regions towards these sources, and constrained the amount of infalling and outflowing mass as well as the mass infall rate for each massive star forming region. From our SiO observations, we estimate the source luminosity required to shock the surroundings of these massive star forming regions and find luminosities similar to those of the HII regions themselves. We find that the ratio between our infall and outflow masses is less than one, suggesting high mass entrainment rates in the molecular outflows. We also find that the large scale molecular infall rate towards G10.6-0.4 is comparable to the small scale molecular infall rate found in previous studies.
description: 24 pages, 9 figures, Accepted to ApJ
Additional file 1 of Changing professional behaviours: mixed methods study utilising psychological theories to evaluate an educational programme for UK medical doctors
Creators: name: Medisauskaite, Asta
name: Griffin, Ann
name: Viney, Rowena
name: Rashid, Ahmed
name: Rich, Antonia
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Science Policy

description: Additional file 1.
Old open clusters in the outer Galactic disk
Creators: name: Carraro, Giovanni
name: Geisler, Douglas
name: Villanova, Sandro
name: Frinchaboy, Peter
name: Majewski, Steve
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The outer parts of the Milky Way disk are believed to be one of the main arenas where the accretion of external material in the form of dwarf galaxies and subsequent formation of streams is taking place. The Monoceros stream and the Canis Major and Argo over-densities are notorious examples. VLT high resolution spectra have been acquired for five distant open clusters. We derive accurate radial velocities to distinguish field interlopers and cluster members. For the latter we perform a detailed abundance analysis and derive the iron abundance [Fe/H] and the abundance ratios of several $α$ elements. Our analysis confirms previous indications that the radial abundance gradient in the outer Galactic disk does not follow the expectations extrapolated from the solar vicinity, but exhibits a shallower slope. By combining the metallicity of the five program clusters with eight more clusters for which high resolution spectroscopy is available, we find that the mean metallicity in the outer disk between 12 and 21 kpc from the Galactic center is [Fe/H] $\approx -0.35$, with only marginal indications for a radial variation. In addition, all the program clusters exhibit solar scaled or slightly enhanced $α$ elements, similar to open clusters in the solar vicinity and thin disk stars. We investigate whether this outer disk cluster sample might belong to an extra-galactic population, like the Monoceros ring. However, close scrutiny of their properties - location, kinematics and chemistry - does not convincingly favor this hypothesis. On the contrary, they appear more likely genuine Galactic disk clusters. We finally stress the importance to obtain proper motion measurements for these clusters to constrain their orbits.
description: 19 pages, 9 eps figure, in press in A&A, abstract rephrased to fit in
Additional file 2 of Changing professional behaviours: mixed methods study utilising psychological theories to evaluate an educational programme for UK medical doctors
Creators: name: Medisauskaite, Asta
name: Griffin, Ann
name: Viney, Rowena
name: Rashid, Ahmed
name: Rich, Antonia
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Science Policy

description: Additional file 2.
Noncommutative Quantum Field Theory: A Confrontation of Symmetries
Creators: name: Chaichian, M.
name: Nishijima, K.
name: Salminen, T.
name: Tureanu, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The concept of a noncommutative field is formulated based on the interplay between twisted Poincaré symmetry and residual symmetry of the Lorentz group. Various general dynamical results supporting this construction, such as the light-wedge causality condition and the integrability condition for Tomonaga-Schwinger equation, are presented. Based on this analysis, the claim of the identity between commutative QFT and noncommutative QFT with twisted Poincaré symmetry is refuted.
description: 20 pages
title: China’s increased presence in Latin America
title: Win-win relations or a new dependency? A state of the art
titleType: Subtitle
Creators: name: Agramont Lechín, Daniel
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: China
subject: Latin America
subject: South-South Cooperation
subject: Dependency
subject: International Relations
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::327 Internationale Beziehungen

description: The rise of the Popular Republic of China (PRC) is one of the most significant events in contemporary international relations. However, at the global level, the “re-emergence of China as a major global power has led to a considerable debate over the likely consequences for the rest of the world” (Jenkins, 2010: 810). China’s growing power raises questions as to the meaning of its superpower status as a nation, and the impact of its newfound influence in not only the Asia-Pacific region, but also the Global South (Dessein, 2015). In the specific case of Latin America and the Caribbean (LAC), the debate centers on the potential disadvantages that China’s vast supply of financial resources might bring for the region. Accordingly, the current paper is intended to examine the debate that has arisen in recent literature around the impact of China’s increased economic presence on Latin America –with win-win relations on the one hand and new dependency on the other.
Optimization for maximum modulation of a double-pass twisted nematic liquid crystal display
Creators: name: Bordakevich, Sebastián
name: Rebón, Lorena
name: Ledesma, Silvia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Spatial light modulators are widely used to perform modulations of different properties of the electromagnetic field. In this work, a simple optimization method for general double-pass setups was developed. It takes into account the involved polarizing elements and displays, and a numerical simulation based on an exhaustive search routine finds the optimal optical axes orientation of the polarizing elements for the desired modulation. By simultaneously considering both impingements, we are able to take full advantage of the modulation capabilities of the chosen spatial light modulators. In particular, different polarization modulations and complex amplitude modulations were studied for twisted nematic liquid crystal displays and passive linear optical elements. Examples for different optimization criteria are shown and compared with experimental results, supporting the feasibility of this approach. This method offers the possibility of independent modulation of two properties of the input light state, outperforming the use of a single screen.
description: 17 pages, 12 figures
Additional file 3 of Changing professional behaviours: mixed methods study utilising psychological theories to evaluate an educational programme for UK medical doctors
Creators: name: Medisauskaite, Asta
name: Griffin, Ann
name: Viney, Rowena
name: Rashid, Ahmed
name: Rich, Antonia
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Science Policy

description: Additional file 3.
Relativistic positioning: including the influence of the gravitational action of the Sun and the Moon and the Earth's oblateness on Galileo satellites
Creators: name: Colmenero, Neus Puchades
name: Córdoba, José Vicente Arnau
name: Alfonso, Màrius Josep Fullana i
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Uncertainties in the satellite world lines lead to dominant positioning errors. In the present work, using the approach presented in \cite{neu14}, a new analysis of these errors is developed inside a great region surrounding Earth. This analysis is performed in the framework of the so-called Relativistic Positioning Systems (RPS). Schwarzschild metric is used to describe the satellite orbits corresponding to the Galileo Satellites Constellation. Those orbits are circular with the Earth as their centre. They are defined as the nominal orbits. The satellite orbits are not circular due to the perturbations they have and to achieve a more realistic description such perturbations need to be taken into account. In \cite{neu14} perturbations of the nominal orbits were statistically simulated. Using the formula from \cite{col10a} a user location is determined with the four satellites proper times that the user receives and with the satellite world lines. This formula can be used with any satellite description, although photons need to travel in a Minkowskian space-time. For our purposes, the computation of the photon geodesics in Minkowski space-time is sufficient as demonstrated in \cite{neu16}. The difference of the user position determined with the nominal and the perturbed satellite orbits is computed. This difference is defined as the U-error. Now we compute the perturbed orbits of the satellites considering a metric that takes into account the gravitational effects of the Earth, the Moon and the Sun and also the Earth oblateness...
description: 24 pages, 10 figures, original research paper
Integrability of anisotropic and homogeneous Universes in scalar-tensor theory of gravitation
Creators: name: Larena, Julien
name: Perez, ; Jerome
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we develop a method based on the analysis of the Kovalewski exponents to study the integrability of anisotropic and homogeneous Universes. The formalism is developed in scalar-tensor gravity, the general relativistic case appearing as a special case of this larger framework. Then, depending on the rationality of the Kovalewski exponents, the different models, both in the vacuum and in presence of a barotropic matter fluid, are classified, and their integrability is discussed.
description: 16 pages, no figure, accepted in CQG