cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
AT 2019avd: A novel addition to the diverse population of nuclear transients
Creators: name: Malyali, A.
name: Rau, A.
name: Merloni, A.
name: Nandra, K.
name: Buchner, J.
name: Liu, Z.
name: Gezari, S.
name: Sollerman, J.
name: Shappee, B.
name: Trakhtenbrot, B.
name: Arcavi, I.
name: Ricci, C.
name: van Velzen, S.
name: Goobar, A.
name: Frederick, S.
name: Kawka, A.
name: Tartaglia, L.
name: Burke, J.
name: Hiramatsu, D.
name: Schramm, M.
name: van der Boom, D.
name: Anderson, G.
name: Miller-Jones, J. C. A.
name: Bellm, E.
name: Drake, A.
name: Duev, D.
name: Fremling, C.
name: Graham, M.
name: Masci, F.
name: Rusholme, B.
name: Soumagnac, M.
name: Walters, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on SRG/eROSITA, ZTF, ASAS-SN, Las Cumbres, NEOWISE-R, and Swift XRT/UVOT observations of the unique ongoing event AT 2019avd, located in the nucleus of a previously inactive galaxy at $z=0.029$. eROSITA first observed AT 2019avd on 2020-04-28 during its first all sky survey, when it was detected as an ultra-soft X-ray source ($kT\sim 85$ eV) that was $\gtrsim 90$ times brighter in the $0.2-2$ keV band than a previous 3$σ$ upper flux detection limit (with no archival X-ray detection at this position). The ZTF optical light curve in the $\sim 450$ days preceding the eROSITA detection is double peaked, and the eROSITA detection coincides with the rise of the second peak. Follow-up optical spectroscopy shows the emergence of a Bowen fluorescence feature and high-ionisation coronal lines ([\ion{Fe}{X}] 6375 Å, [\ion{Fe}{XIV}] 5303 Å), along with persistent broad Balmer emission lines (FWHM$\sim 1400$ km s$^{-1}$). Whilst the X-ray properties make AT 2019avd a promising tidal disruption event (TDE) candidate, the optical properties are atypical for optically selected TDEs. We discuss potential alternative origins that could explain the observed properties of AT 2019avd, such as a stellar binary TDE candidate, or a TDE involving a super massive black hole binary.
description: A&A accepted 18/12/2020. 19 pages, 14 figures, 8 tables. Forthcoming article in A&A special issue: 'First science highlights from SRG/eROSITA'
Luther aus orthodoxer Sicht unter besonderer Berücksichtigung seiner 95 Thesen
Creators: name: Lambriniadis, Elpidophoros
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 65 Nr. 1 (2016): Ökumenische Rundschau, Band 65, Heft 1
La ciencia ficción como herramienta pedagógica en un curso de Estudios en Ciencia, Tecnología y Sociedad: descripción de una experiencia docente
Creators: name: Información, conocimiento y sociedad, Grupo de investigación
Publisher: name: figshare
Year: 2020
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Science fiction can be used as a pedagogical aid for the teaching, popularizing, critical reflection and promotion of science and technology. A teaching experience is described in which science fiction stories (novels, short stories, movies and short films) were used exclusively to impart a Science, Technology and Society Studies Course for undergraduate students of the Library Science program, in the Interamerican School of Library Science, Antioquia University, during the first semester of 2014. The course was structured as a reading and writing workshop, supplemented with thematical discussions and exercises. The results were satisfactory, showcasing the students creativity and critical thinking. Several recommendations and resources are presented for other teachers who wish to emulate or adapt the experience.
reflexión crítica y el fomento de la ciencia y la tecnología. Describimos una experiencia docente en la cual se utilizaron exclusivamente historias de ciencia ficción (novelas, cuentos, películas y cortometrajes) para dictar un curso de Estudios en Ciencia, Tecnología y Sociedad para estudiantes del pregrado en bibliotecología, en la Escuela Interamericana de Bibliotecología de la Universidad de Antioquia, durante el primer semestre de 2014. El curso toma la forma de un taller de lectura y escritura creativa, suplementado con talleres y discusiones temáticas. Los resultados fueron satisfactorios, demostrando la creatividad y reflexividad de los estudiantes. Presentamos varias recomendaciones y recursos para otros docentes que deseen replicar o adaptar la experiencia.
Geodesic Flow on Global Holomorphic Sections of TS^2
Creators: name: Guilfoyle, Brendan
name: Klingenberg, Wilhelm
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B30, 53A25

description: We study the geodesic flow on the global holomorphic sections of the bundle $π:{TS}^2\to {S}^2$ induced by the neutral Kähler metric on the space of oriented lines of ${\Bbb{R}}^3$, which we identify with ${TS}^2$. This flow is shown to be completely integrable when the sections are symplectic and the behaviour of the geodesics is described.
description: AMS-LATEX 7 pages, 2 figures
List-encoding CCDM: A Nonlinearity-tolerant Shaper Aided by Energy Dispersion Index
Creators: name: Wu, Kaiquan
name: Liga, Gabriele
name: Sheikh, Alireza
name: Gültekin, Yunus Can
name: Willems, Frans M. J.
name: Alvarado, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recently, a metric called energy dispersion index (EDI) was proposed to indicate the nonlinear interference (NLI) induced by correlated symbols during optical transmission. In this paper, we propose a new shaper architecture to decrease the EDI of transmitted symbols and thus, increase the signal-to-noise ratio (SNR). We call this shaper the list-encoding constant-composition distribution matcher (L-CCDM). L-CCDM consists of an additional EDI selecting module, which is compatible with standard probabilistic amplitude shaping (PAS) architecture. Numerical results obtained from a multi-span multi-channel system show that when compared to standard CCDM with 256-ary quadrature amplitude modulation (256QAM), the proposed architecture offers an effective SNR gain of 0.35 dB, an achievable information rate gain of 0.22 bit/4D-symbol, or equivalently an 8% reach extension.
Content Marketing and Growth Hacking Playbook 2
Creators: name: Almeida, Samuel
Publisher: name: Zenodo
Year: 2021

description: The iPRODUCE Content Marketing and Growth Hacking Playbook 2 is the second version of a living document that details the strategy for promotion and outreach through the marketing of project content, growth of the project and its target groups through development and absorption of knowledge, and the dissemination of results. This second version revisits and analyses the project’s main target groups; channels, tools and activities for implementing the strategy; role of partners; timeline; and how the consortium will monitor and assess the impact of its efforts. It also details additional activities to be implemented in the second half of the project to further build the cMDF ecosystem. The deliverable concludes with an overview of the main updates to the strategy.
A Block-Permutation-Based Encryption Scheme with Independent Processing of RGB Components
Creators: name: Imaizumi, Shoko
name: Kiya, Hitoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: This paper proposes a block-permutation-based encryption (BPBE) scheme for the encryption-then-compression (ETC) system that enhances the color scrambling. A BPBE image can be obtained through four processes, positional scrambling, block rotation/flip, negative-positive transformation, and color component shuffling, after dividing the original image into multiple blocks. The proposed scheme scrambles the R, G, and B components independently in positional scrambling, block rotation/flip, and negative-positive transformation, by assigning different keys to each color component. The conventional scheme considers the compression efficiency using JPEG and JPEG 2000, which need a color conversion before the compression process by default. Therefore, the conventional scheme scrambles the color components identically in each process. In contrast, the proposed scheme takes into account the RGB-based compression, such as JPEG-LS, and thus can increase the extent of the scrambling. The resilience against jigsaw puzzle solver (JPS) can consequently be increased owing to the wider color distribution of the BPBE image. Additionally, the key space for resilience against brute-force attacks has also been expanded exponentially. Furthermore, the proposed scheme can maintain the JPEG-LS compression efficiency compared to the conventional scheme. We confirm the effectiveness of the proposed scheme by experiments and analyses.
description: 8 pages
Introduction to The Turing Way for the Zero to Binder Workshop
Creators: name: Karoune, Emma
Publisher: name: Zenodo
Year: 2021
Subjects: Open source
Open Science
Collaboration
Science Communication
Reproducible research

description: This is an introduction to The Turing Way for the Zero to Binder workshop as part of the Software Sustainability Institute Research Software Camp 2021 concerning Research Accessibility. It explores the project as a whole: the book, the community, the fact that it is an open-source project and it's collaborative nature. The talk explains how the book started as a guide to reproducible research but has now expanded to include guides on project management, communication, collaboration and ethical research. It also describes the activities of the community and how this enables the expansion of the book contents through the collaborative open-source nature of the project.
Size effects and dislocation patterning in two-dimensional bending
Creators: name: Weingarten, N. Scott
name: Selinger, Robin L. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform atomistic Monte Carlo simulations of bending a Lennard-Jones single crystal in two dimensions. Dislocations nucleate only at the free surface as there are no sources in the interior of the sample. When dislocations reach sufficient density, they spontaneously coalesce to nucleate grain boundaries, and the resulting microstructure depends strongly on the initial crystal orientation of the sample. In initial yield, we find a reverse size effect, in which larger samples show a higher scaled bending moment than smaller samples for a given strain and strain rate. This effect is associated with source-limited plasticity and high strain rate relative to dislocation mobility, and the size effect in initial yield disappears when we scale the data to account for strain rate effects. Once dislocations coalesce to form grain boundaries, the size effect reverses and we find that smaller crystals support a higher scaled bending moment than larger crystals. This finding is in qualitative agreement with experimental results. Finally, we observe an instability at the compressed crystal surface that suggests a novel mechanism for the formation of a hillock structure. The hillock is formed when a high angle grain boundary, after absorbing additional dislocations, becomes unstable and folds to form a new crystal grain that protrudes from the free surface.
description: 15 pages, 8 figures
Search for sub-solar mass binaries with Einstein Telescope and Cosmic Explorer
Creators: name: Nunes, Rafael C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A possible detection of sub-solar mass ultra-compact objects would lead to new perspectives on the existence of black holes that are not of astrophysical origin and/or pertain to formation scenarios of exotic ultra-compact objects. Both possibilities open new perspectives for better understanding of our universe. In this work, we investigate the significance of detection of sub-solar mass binaries with components mass in the range: $10^{-2} M_\odot$ up to 1$M_\odot$, within the expected sensitivity of the ground-based gravitational waves detectors of third-generation, viz., the Einstein Telescope (ET) and the Cosmic Explorer (CE). Assuming a minimum of amplitude signal-to-noise ratio for detection, viz., $ρ= 8$, we find that the maximum horizon distances for an ultra-compact binary system with components mass $10^{-2} \, M_\odot$ and 1$M_\odot$ are 40 Mpc and 1.89 Gpc, respectively, for ET, and 125 Mpc and 5.8 Gpc, respectively, for CE. Other cases are also presented in the text. We derive the merger rate, and discuss consequences on the abundances of primordial black hole (PBH), $f_{\rm PBH}$. Considering the entire mass range [$10^{-2}$ - 1]$M_\odot$, we find $f_{\rm PBH} < 0.70$ ($
description: 7 Pages, 4 Figures, 1 Table
New design for pressure washer drums
Creators: name: Fok, Sunny Chi Man
Publisher: name: University of British Columbia
Year: 2009

description: In the kraft pulp and paper industry, pressure washer drums are used to separate bleaching liquor and chemicals from pulp. These drums have experienced serious structural damage in terms of cracks in critical areas that have led to excessive production down time of the washers. In this thesis, a new mechanical design for these washers that eliminates problems in the original design and greatly extends the life of the equipment is presented. The first part of this thesis discusses finite element simulation and experimental testing of the current and the proposed new design whereas the second part of the thesis discusses the design optimization and fatigue life prediction of the new design using finite element sub-modeling technique. The final part of the thesis investigates special start-up procedures that minimize the thermal shock effect on the new design. The development of the new design starts by numerically simulating the existing washer drum design in an attempt to predict real life observations for such drums. This process involves experimental testing of a full scale drum in order to assess the load carrying capacity of various parts of the drum and to identify key boundary conditions for use in the finite element computer model. Various design modifications are then studied and numerically assessed. Shape optimization is then carried out for a specific area in the final design. A prototype was built based on the final model and experimental testing was performed in actual operating conditions. In order to numerically assess the fatigue life of the new design, the growth rate of a fatigue crack located at the critical area is investigated and presented in the second part of the thesis. The procedure involves putting a crack in the finite element model of the new design rather than using a standard or 'can-model'. The stress intensity factors are then calculated for the crack under actual loading conditions and with the actual geometry of the structure. Various crack lengths are considered and a plot of the variation of the stress intensity factor (SIF) with the crack length is obtained. Displacement extrapolation method is used to calculate the SIF at the crack tip. The fatigue life cycle of the structure is then estimated based on the calculated SIF and Paris law. Comparison of this detailed and more accurate procedure with the standard 'can model' procedure is given. In the final part of the thesis, a detailed transient heat transfer analysis is performed to predict the temperature distribution in the structure during start-up and shut-down stages. Based on the predicted temperature distribution and the corresponding thermal stresses, a start up procedure is proposed with the objective of minimizing both the impact of thermal shock as well as the time required for start up.
The Excess Costs of Depression and the Influence of Sociodemographic and Socioeconomic Factors: Results from the German Health Interview and Examination Survey for Adults (DEGS)
Creators: name: König, Hannah
name: Rommel, Alexander
name: Thom, Julia
name: Schmidt, Christian
name: König, Hans-Helmut
name: Brettschneider, Christian
name: Konnopka, Alexander
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: 610 Medizin und Gesundheit

description: Introduction The aim of this study was to estimate excess costs of depression in Germany and to examine the influence of sociodemographic and socioeconomic determinants. Methods Annual excess costs of depression per patient were estimated for the year 2019 by comparing survey data of individuals with and without self-reported medically diagnosed depression, representative for the German population aged 18–79 years. Differences between individuals with depression (n = 223) and without depression (n = 4540) were adjusted using entropy balancing. Excess costs were estimated using generalized linear model regression with a gamma distribution and log-link function. We estimated direct (inpatient, outpatient, medication) and indirect (sick leave, early retirement) excess costs. Subgroup analyses by social determinants were conducted for sex, age, socioeconomic status, first-generation or second-generation migrants, partnership, and social support. Results Total annual excess costs of depression amounted to €5047 (95% confidence interval [CI] 3214–6880) per patient. Indirect excess costs amounted to €2835 (1566–4103) and were higher than direct excess costs (€2212 [1083–3341]). Outpatient (€498), inpatient (€1345), early retirement (€1686), and sick leave (€1149) excess costs were statistically significant, while medication (€370) excess costs were not. Regarding social determinants, total excess costs were highest in the younger age groups (€7955 for 18–29-year-olds, €9560 for 30–44-year-olds), whereas total excess costs were lowest for the oldest age group (€2168 for 65+) and first-generation or second-generation migrants (€1820). Conclusions Depression was associated with high excess costs that varied by social determinants. Considerable differences between the socioeconomic and sociodemographic subgroups need further clarification as they point to specific treatment barriers as well as varying treatment needs.
Quantum nature of a strongly-coupled single quantum dot-cavity system
Creators: name: Hennessy, K.
name: Badolato, A.
name: Winger, M.
name: Gerace, D.
name: Atature, M.
name: Gulde, S.
name: Falt, S.
name: Hu, E. L.
name: Imamoglu, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cavity quantum electrodynamics (QED) studies the interaction between a quantum emitter and a single radiation-field mode. When an atom is in strong coupling with a cavity mode1,2, it is possible to realize key quantum information processing (QIP) tasks, such as controlled coherent coupling and entanglement of distinguishable quantum systems. Realizing these tasks in the solid state is clearly desirable, and coupling semiconductor self-assembled quantum dots (QDs) to monolithic optical cavities is a promising route to this end. However, validating the efficacy of QDs in QIP applications requires confirmation of the quantum nature of the QD-cavity system in the strong coupling regime. Here we find a confirmation by observing quantum correlations in photoluminescence (PL) from a photonic crystal (PC) nanocavity3-5 interacting with one, and only one, QD located precisely at the cavity electric field maximum. When off-resonance, photon emission from the cavity mode and QD excitons is anti-correlated at the level of single quanta, proving that the mode is driven solely by the QD despite an energy mis-match between cavity and excitons. When tuned into resonance, the exciton and photon enter the strong-coupling regime of cavity-QED and the QD lifetime reduces by a factor of 120. The photon stream from the cavity becomes anti-bunched, proving that the coupled exciton/photon system is in the quantum anharmonic regime. Our observations unequivocally show that QIP tasks requiring the quantum nonlinear regime are achievable in the solid state.
description: 14 pages 4 figures
Numerical Investigation of Coaxial GCH4/LOx Combustion at Supercritical Pressures
Creators: name: Priyadarshini, Sindhuja
name: Das, Malay K
name: De, Ashoke
name: Sinha, Rupesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This article aims to numerically investigate the combustion phenomenon of coaxial gaseous CH4 LOx at supercritical pressures. The choice of turbulence model, real gas model, and chemical kinetics model are the critical parameters in numerical simulations of cryogenic combustion at high pressure. At this supercritical operating pressure, the ideal gas law does not remain valid for such cases. Therefore, we have systematically carried out a comparative study to analyze the importance of real gas models, turbulence parameters, and chemical kinetics at such conditions. The comparison of real gas models with the NIST database reveals better conformity of SRK (Soave Redlich Kwong Equation of State (EoS)) model predictions with the database. Further, the computed results indicate that the Standard k-e turbulence model with modified constant captures the better flame shape and temperature peak position compared to other RANS based turbulence models while invoking the non-premixed steady b-PDF flamelet model for simulating the combustion process. Furthermore, a comparative study comparing two different chemical kinetics models indicates that the reduced Jones Lindstedt mechanism can accurately predict the flame characteristics with the least computational cost. Finally, we have studied the effect of chamber pressure and LOx inlet temperature on the flame characteristics. The flame characteristics exhibit a strong sensitivity towards the chamber pressure due to the weakening of the pseudo-boiling effect with an increase in pressure. As a consequence of lower turbulent rates of energy and mass transfer through the transcritical mixing layer, the flame spreading becomes narrower at elevated pressure and temperature, thereby yielding an increased flame length at transcritical conditions.
Absence of the London limit for the first-order phase transition to a color superconductor
Creators: name: Noronha, Jorge L.
name: Ren, Hai-cang
name: Giannakis, Ioannis
name: Hou, Defu
name: Rischke, Dirk H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the effects of gauge-field fluctuations on the free energy of a homogeneous color superconductor in the color-flavor-locked (CFL) phase. Gluonic fluctuations induce a strong first-order phase transition, in contrast to electronic superconductors where this transition is weakly first order. The critical temperature for this transition is larger than the one corresponding to the diquark pairing instability. The physical reason is that the gluonic Meissner masses suppress long-wavelength fluctuations as compared to the normal conducting phase where gluons are massless, which stabilizes the superconducting phase. In weak coupling, we analytically compute the temperatures associated with the limits of metastability of the normal and superconducting phases, as well as the latent heat associated with the first-order phase transition. We then extrapolate our results to intermediate densities and numerically evaluate the temperature of the fluctuation-induced first-order phase transition, as well as the discontinuity of the diquark condensate at the critical point. We find that the London limit of magnetic interactions is absent in color superconductivity.
description: 14 pages, 5 figures
Action Plan for Diamond Open Access (Indonesian)
Creators: name: Ancion, Zoe
name: Borrell-Damián, Lidia
name: Mounier, Pierre
name: Rooryck, Johan
name: Saenen, Bregt
Publisher: name: Zenodo
Year: 2024
Subjects: Open Access
Diamond Open Access

description: Science Europe, cOAlition S, OPERAS, and the French National Research Agency (ANR) present an Action Plan for Diamond Open Access to further develop and expand a sustainable, community-driven Diamond OA scholarly communication ecosystem. It focuses on efficiency, quality standards, capacity building, and sustainability, and it addresses the alignment and development of common resources for the whole Diamond OA ecosystem, including journals and platforms, while respecting the cultural, multilingual, and disciplinary diversity that constitutes the strength of the sector. The Action Plan intends to create an inclusive worldwide community that has the tools to strengthen existing Diamond OA journals and platforms and increase their visibility.
Visibilidad e impacto altmétrico de los investigadores de la Universidad de Antioquia: metodología aplicable a universidades
Creators: name: Información, conocimiento y sociedad, Grupo de investigación
name: Uribe Tirado, Alejandro
name: RUIZ-NUÑEZ, Kelis
name: Ochoa Gutiérrez, Jaider,
name: FAJARDO-BERMÚDEZ, Marcela
Publisher: name: figshare
Year: 2021
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: RESUMEN:Este trabajo es resultado de uno de los componentes de una investigación macro que busca crear un Modelo para identificar el grado de vinculación de una universidad con su entorno, en este caso, aplicado a la Universidad de Antioquia (Medellín-Colombia). Este componente se refi ere a la visibilidad e impacto de los investigadores desde la perspectiva y datos que ofrecen las altmetrics. Para ello, se analizan los datos altmétricos de 1.032 investigadores de seis áreas del conocimiento, considerando diferentesplataformas académicas, profesionales y sociales, además de una plataforma integradora de indicadores altmétricos. Aunque se realiza esta medición para investigadores de la Universidad de Antioquia, la metodología general para la captura e interpretación de datos puede llevar a cabo otras universidades que comparten características de investigación y de comunicación científica y que, a partir de las altmetrics, desean identifi car la visibilidad e impacto de sus investigadores y la vinculación misma de la institución con su entorno, para complementariedad, de esta manera, las mediciones bibliométricas tradicionales u otras mediciones del entorno de la universidad, como lo considera, por ejemplo, el Manual de Valencia.
ABSTRACTO:This work is the result of one of the components of a macro investigation, which seeks to develop a Model to identify the degree of linkage of a university with its environment; in this case, it is applied to the University of Antioquia (Medellín-Colombia). This component refers to the visibility and impact of investigators from the perspective and data off ered by altmetrics. To that eff ect, the altmetrics data of 1,032 investigators from six areas of knowledge are reviewed, taking into account diff erent academic, professional and social platforms, as well as an integrating platform of altmetrics indicators. Although this measurement refers to University of Antioquia investigators, the general methodology for data capture and interpretation may be extended to other universities that share the same investigation and scientific communication, and that from the altmetrics wish to identify the visibility and impact of their investigators and the linking of the institution with its environment, and complement in this way, the traditional bibliometric measurements or other measurements of the university environment, such as the Manual of Valencia.
Edge modes as reference frames and boundary actions from post-selection
Creators: name: Carrozza, Sylvain
name: Hoehn, Philipp A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a general framework realizing edge modes in (classical) gauge field theory as dynamical reference frames, an often suggested interpretation that we make entirely explicit. We focus on a bounded region $M$ with a co-dimension one time-like boundary $Γ$, which we embed in a global spacetime. Taking as input a variational principle at the global level, we develop a systematic formalism inducing consistent variational principles (and in particular, boundary actions) for the subregion $M$. This relies on a post-selection procedure on $Γ$, which isolates the subsector of the global theory compatible with a general choice of gauge-invariant boundary conditions for the dynamics in $M$. Crucially, the latter relate the configuration fields on $Γ$ to a dynamical frame field carrying information about the spacetime complement of $M$; as such, they may be equivalently interpreted as frame-dressed or relational observables. Generically, the external frame field keeps an imprint on the ensuing dynamics for subregion $M$, where it materializes itself as a local field on the time-like boundary $Γ$; in other words, an edge mode. We identify boundary symmetries as frame reorientations and show that they divide into three types, depending on the boundary conditions, that affect the physical status of the edge modes. Our construction relies on the covariant phase space formalism, and is in principle applicable to any gauge (field) theory. We illustrate it on three standard examples: Maxwell, Abelian Chern-Simons and non-Abelian Yang-Mills theories. In complement, we also analyze a mechanical toy-model to connect our work with recent efforts on (quantum) reference frames.
description: 76 pages, comments welcome; v4: journal version, accepted in JHEP
Nonlinear magneto-optical rotation with modulated light in tilted magnetic fields
Creators: name: Pustelny, S.
name: Rochester, S. M.
name: Kimball, D. F. Jackson
name: Yashchuk, V. V.
name: Budker, D.
name: Gawlik, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Larmor precession of laser-polarized atoms contained in anti-relaxation-coated cells, detected via nonlinear magneto-optical rotation (NMOR) is a promising technique for a new generation of ultra-sensitive atomic magnetometers. For magnetic fields directed along the light propagation direction, resonances in NMOR appear when linearly polarized light is frequency- or amplitude-modulated at twice the Larmor frequency. Because the frequency of these resonances depends on the magnitude but not the direction of the field, they are useful for scalar magnetometry. New NMOR resonances at the Larmor frequency appear when the magnetic field is tilted away from the light propagation direction in the plane defined by the light propagation and polarization vectors. These new resonances, studied both experimentally and with a density matrix calculation in the present work, offer a convenient method for NMOR-based vector magnetometry.
description: Submitted to Phys. Rev. A, 6 pages, 9 figures
Constraints on compact dark matter from gravitational wave microlensing
Creators: name: Basak, S.
name: Ganguly, A.
name: Haris, K.
name: Kapadia, S.
name: Mehta, A. K.
name: Ajith, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: If a significant fraction of dark matter is in the form of compact objects, they will cause microlensing effects in the gravitational wave (GW) signals observable by LIGO and Virgo. From the non-observation of microlensing signatures in the binary black hole events from the first two observing runs and the first half of the third observing run, we constrain the fraction of compact dark matter in the mass range $10^2-10^5~{M_\odot}$ to be less than $\simeq 50-80\%$ (details depend on the assumed source population properties and the Bayesian priors). These modest constraints will be significantly improved in the next few years with the expected detection of thousands of binary black hole events, providing a new avenue to probe the nature of dark matter.
description: 9 pages, 12 figures, published version
Sudden Death of Entanglement: Classical Noise Effects
Creators: name: Yu, Ting
name: Eberly, J. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When a composite quantum state interacts with its surroundings, both quantum coherence of individual particles and quantum entanglement will decay. We have shown that under vacuum noise, i.e., during spontaneous emission, two-qubit entanglement may terminate abruptly in a finite time [T. Yu and J. H. Eberly, \prl {93}, 140404 (2004)], a phenomenon termed entanglement sudden death (ESD). An open issue is the behavior of mixed-state entanglement under the influence of classical noise. In this paper we investigate entanglement sudden death as it arises from the influence of classical phase noise on two qubits that are initially entangled but have no further mutual interaction.
description: 5 pages, 1 figure
Measurement of Inclusive Production of eta, eta' and phi Mesons in D0, D+ and Ds+ Decays
Creators: name: Huang, G. S.
name: Collaboration, CLEO
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We measure the inclusive branching fractions of charm mesons into three mesons with large s-anti-s content, namely the eta, eta' and phi. Data were accumulated with the CLEO-c detector. For D0 and D+ rates, we use 281/pb taken on the psi(3770) resonance, and for Ds+ rates, we use 195/pb taken at 4170 MeV. We find that the production rates of these particles are larger in Ds+ decays than in D0 and D+ decays. The phi rate, in particular, is 15 times greater. These branching fractions can be used to measure Bs yields either at the Upsilon(5S) resonance or at hadron colliders.
description: 26 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2006/, Submitted to PRD
Neutrino Spectra from Low and High Luminosity Populations of Gamma Ray Bursts
Creators: name: Gupta, Nayantara
name: Zhang, Bing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The detection of GRB 060218 at z=0.033 by {\em Swift} within 1.5 years of operation, together with the detection of GRB 980425 at $z=0.0085$ by BeppoSAX, suggest that these low-luminosity (LL) GRBs have a much higher event rate than the canonical high-luminosity (HL) GRBs, and they form a distinct new component in the GRB luminosity function. We explore the contribution of this previously neglected GRB population to the diffuse neutrino background within the internal shock model and compare it with that of the canonical HL population. By considering a wide range of distributions of various parameters (e.g. luminosity, spectral break energy, duration, variability time, Lorentz factor, redshift) for both populations, we find that although it is difficult to detect neutrinos from the individual LL GRBs, the contribution of the LL population to the diffuse neutrino background is more than the HL population above about $10^{8}$ GeV.
description: 11 pages, 1 figure expanded version accepted for publication in Astroparticle Physics, conclusion unchanged
Dolichogenidea dilecta
Creators: name: Fernandez-Triana, Jose
name: Sakagami, Kota
name: Shimizu, So
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea dilecta

description: D. dilecta (Haliday, 1834): Propodeum mostly polished and without areola (only small rugae above nucha); T1 strongly narrowing towards posterior margin; T1 (basal half) and T2 (centrally) smooth; mesofemur mostly yellow.
description: Published as part of Fernandez-Triana, Jose, Sakagami, Kota & Shimizu, So, 2018, Dolichogenidea maetoi sp. nov. (Hymenoptera: Braconidae) from Japan, the first parasitoid wasp recorded from Hyblaea fortissima (Lepidoptera), pp. 167-175 in Acta Entomologica Musei Nationalis Pragae 58 (1) on page 172, DOI: 10.2478/aemnp-2018-0014, http://zenodo.org/record/3699178
Deep Fabry-Perot Halpha Observations of NGC 7793: a Very Extended Halpha Disk and a Truly Declining Rotation Curve
Creators: name: Dicaire, I.
name: Carignan, C.
name: Amram, P.
name: Marcelin, M.
name: Hlavacek-Larrondo, J.
name: de Denus-Baillargeon, M. -M.
name: Daigle, O.
name: Hernandez, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Deep Halpha observations of the Sculptor Group galaxy NGC 7793 were obtained on the ESO 3.60m and the Marseille 36cm telescopes at La Silla, Chile. Halpha emission is detected all the way to the edge of the HI disk, making of the HII disk of NGC 7793 one of the largest ever observed in a quiet non-AGN late-type system. Even in the very outer parts, the HII ionizing sources are probably mainly internal (massive stars in the disk) with an unlikely contribution from the extragalactic ionizing background. The Halpha kinematics confirms what had already been seen with the HI observations: NGC 7793 has a truly declining rotation curve. However, the decline is not Keplerian and a dark halo is still needed to explain the rotation velocities in the outer parts.
description: 28 pages, 8 figures. Accepted for publication in AJ
Noise-Induced Coherence in Molecular Processes
Creators: name: Dodin, Amro
name: Brumer, Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Excitation of molecules by incident incoherent electromagnetic radiation, such as sunlight, is described in detail and contrasted with the effect of coherent (e.g. laser) light. The nature of the quantum coherences induced by the former, relevant to transport processes in nature and in technology, is emphasized. Both equilibrium and steady state scenarios are discussed, Three examples: simple models, calcium excitation in polarized light, and the isomerization of retinal in rhodopsin are used to expose the underlying qualitative nature of the established coherences.
Room sound field prediction for auralization
Creators: name: Ressl, Waqar-Un-Nissa (Vicky)
Publisher: name: University of British Columbia
Year: 2009

description: Sound fields in rooms, including the complex interactions between propagating sound waves and the room surfaces, are predicted using various approaches. These approaches are validated either physically - by comparing the measured and predicted sound fields - or subjectively. Subjective evaluation of the predictions can be performed using auralization, which consists of simulating an acoustical environment for binaural presentation to a listener. Inaccuracies that result from the different sound-field prediction methods result in imperfect auralization. It is of interest to understand the perceptual consequences of these inaccuracies and compensate for them with accurate sound-field prediction models. The aim of this research project was to develop accurate sound-field prediction models for use in auralization systems. To achieve this objective, two phases of work were undertaken: (1) acoustical signals were created, using simplified sound-field techniques, and presented to listeners using a commercial auralization system in order to test sound-localization ability; (2) a soundprediction algorithm was derived and used in the development of an improved roomprediction model. With respect to the work using the commercial auralization system, modifications were made to the system to mimic higher-order reflections in the room, as well as to account for varying surface absorption in each octave band. Subjects' localization abilities were evaluated using the sound-field simulations and in a real room to validate the sound-field simulations. Inconclusive results from the localization tests led to the development of an improved sound-field prediction model based on acoustical radiosity. The radiosity model was validated experimentally in full-scale and scale-model rooms with the help of other prediction models. A combined model - based on the method of images and radiosity - was developed and validated in several rooms. An inherent attribute of the radiosity approach which makes it unsuitable for auralization was identified.
Order form of Layritz Nurseries from [George] Goulding, December 5, 1910
Creators: name: Layritz Nurseries
name: Goulding, George
Publisher: name: The University of British Columbia
Year: 2017

description: Order sheet from [George] Goulding for Layritz Nurseries, dated December 5, 1910; associated with correspondence of the same date.
Non-equilibrium molecular dynamics and continuum modelling of transient freezing of atomistic solids
Creators: name: Font, Francesc
name: Micou, William
name: Bresme, Fernando
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this work we investigate the transient solidification of a Lennard-Jones liquid using non-equilibrium molecular dynamics simulations and continuum heat transfer theory. The simulations are performed in slab-shaped boxes, where a cold thermostat placed at the centre of the box drives the solidification of the liquid. Two well-defined solid fronts propagate outwards from the centre towards the ends of the box until solidification is completed. A continuum phase change model that accounts for the difference between the solid and the liquid densities is formulated to describe the evolution of the temperature and the position of the solidification front. Simulation results for a small and a large nanoscale system, of sizes $30.27$\,nm and $60.54$\,nm, are compared with the predictions of the theoretical model. Following a transient period of $\sim$20-40 ps and a displacement of the solidification front of 1-2.5 nm we find that the simulations and the continuum theory show good agreement. We use this fact to combine the simulation and theoretical approaches to design a simple procedure to calculate the latent heat of the material. We also perform simulations of the homogeneous freezing process, i.e. in the absence of a temperature gradient and at constant temperature, by quenching the liquid at supercooled temperatures. We demonstrate that the solidification rate of homogenous freezing is much faster than the one obtained under a thermal gradient for systems of the same size subject to the same thermostat temperature. Our study and conclusions should be of general interest to a wide range of atomistic solids.
Exact solution of a one-dimensional Boltzmann equation for a granular tracer particle
Creators: name: Piasecki, J.
name: Talbot, J.
name: Viot, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a one-dimensional system consisting of a granular tracer particle of mass $M$ in a bath of thermalized particles each of mass $m$. When the mass ratio, $M/m$, is equal to the coefficient of restitution, $α$, the system maps to a a one-dimensional elastic gas. In this case, Boltzmann equation can be solved exactly. We also obtain expressions for the velocity autocorrelation function and the diffusion coefficient. Numerical simulations of the Boltzmann equation are performed for $M/m\neq α$ where no analytical solution is available. It appears that the dynamical features remain qualitatively similar to those found in the exactly solvable case.
description: 17 pages, 3 figures, Accepted in Physica A
Diffusion plays an unusual role in ecological quasi-neutral competition in metapopulations
Creators: name: Pires, Marcelo A.
name: Crokidakis, Nuno
name: Queirós, Silvio M. Duarte
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We investigate the phenomenology emerging from a 2-species dynamics under the scenario of a quasi-neutral competition within a metapopulation framework. We employ stochastic and deterministic approaches, namely spatially-constrained individual-based Monte Carlo simulations and coupled mean-field ODEs. Our results show the multifold interplay between competition, birth-death dynamics and spatial constraints induces a nonmonotonic relation between the ecological majority-minority switching and the diffusion between patches. This means that diffusion can set off birth-death ratios and enhance the preservation of a species.
description: 6 figures, 10 pages, to appear in Nonlinear Dynamics
German Psychological Society (DGPs) CoARA Action Plan 2024
Creators: name: Schönbrodt, Felix D.
name: Schubert, Anna-Lena
name: Gollwitzer, Mario
name: Fink-Lamotte, Jakob
Publisher: name: Zenodo
Year: 2024
Subjects: CoARA
Research Assessment

description: The DGPs already signed the San Francisco Declaration on Research Assessment (DORA) in 2021 and was the first German scientific society to join the Coalition for Advancing Research Assessment (CoARA) at the beginning of 2023. CoARA aims to ensure that various practices and activities that promote the intrinsic quality of research are recognized in the assessment of research. Not only publications should count, but also, for example, large published data sets or the development of research software; transparency and reproducibility are explicitly named as relevant quality criteria. A qualitative evaluation process should be supported by the responsible use of valid quantitative indicators. This Action Plan describes how the DGPs pursues the process of implementing the Core Commitments according to an Action Plan with defined milestones.

The Action Plan has been approved on 2024-06-29 by the Executive Committee of the DGPs.
Innvoate4Cities Conference 2021: Student-Led Final Report
Creators: name: Dickey, Ariana
name: OKE, CATHY
name: Aggarwal, Anupriya
name: Vega, Luis Felipe Álvarez
name: Binuyo, Olutomiwa
name: Calara, Joseph
name: Das, Ishita
name: Emmanouel, Taylah
name: Fenwick, Joseph
name: Field, Kate
name: Jeon, Heesu
name: Kiprono, Abel
name: Li, Skye
name: Liu, Boyu
name: McGee, Hope
name: Meng, Yuan
name: Muralidharan, Padmapriya
name: Nafees, Ilma
name: Njenga, Zipporah
name: Polwatta, Samara
name: Quail, Harry
name: Razzaboni, Martina
name: Safwat, Asala
name: Senkondo, Edward
name: Serre, Bryant M.
name: Sharpe, Ellen
name: Su, Emma
name: Taimur, Sadaf
name: Trevisi, Enrico
name: Williams, Rachel
name: Woldeamanuel, Alemayehu Agizew
name: Yang, Xueting
name: Young, Amber
name: Youngrod, Rachaya
Publisher: name: University of Melbourne
Year: 2021
Subjects: subject: 120504 Land Use and Environmental Planning
subject: FOS: Social and economic geography
subject: 120508 Urban Design
subject: 120507 Urban Analysis and Development

description: The Innovate4Cities Conference 2021 brought together a global collection of scientists, policymakers, academics and citizen voices. The conference sought to address gaps in global knowledge and innovation, how and why to take action on climate change, and enable partnership building and collaboration while setting the stage for COP26. This report summarises the Innovate4Cities Conference 2021 and outlines key messages, whilst identifying knowledge gaps and offering areas for further research. Subsequent recommendations integrate general observations and context-specific case studies with the intention of mobilising multi-tiered climate action. The report was produced by a team of 32 students who attended the conference, rapporteured, and synthesised key messages.