cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pinpointing fast radio bursts in space and time
Creators: name: Hessels, Jason
Publisher: name: Zenodo
Year: 2023

description: In the past decade we have started to explore extragalactic and intergalactic space using millisecond-duration radio flashes called `fast radio bursts' (FRBs). These cosmological signals are surprisingly abundant: there is likely an FRB occurring somewhere on the sky at least once every minute. They are also unique probes of the otherwise invisible material between stars and galaxies. But what is producing them? Thanks to a new generation of wide-field radio telescopes, several FRBs per day are now being discovered. Novel high-time-resolution observations using radio interferometers are also pinpointing FRB locations and providing host galaxy associations. More than a decade since the discovery of the famous `Lorimer burst', we are making rapid progress in our understanding of the enigmatic FRB phenomenon. In this talk, I will briefly review the status of the field, highlighting some of the latest discoveries and what they have taught us. At the same time, recent discoveries are showing us that we have still only scratched the surface in terms of the vast parameter space we can potentially explore. Expanding our exploration for FRB-like signals to an even wider range of timescales, luminosities and event-rates will allow us to discover new types of extreme astrophysical phenomena - some of which are likely to have high-energy counterparts.
AdS black brane coupled to non-abelian logarithmic gauge theory and color DC conductivity
Creators: name: Sadeghi, Mehdi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we consider Einstein-Hilbert gravity in the presence of cosmological constant and non-abelian nonlinear electromagnetic field of logarithmic type which is minimally coupled to gravity. First, black brane solution of this model is introduced and then color non-abelian DC conductivity is calculated for this solution by using AdS/CFT duality. Our result recovers the Yang-Mills model in $λ\to 0$ limit.
description: 10 pages, no figure, typo corrected, references added, minor modifications, accepted for publication in CJP
Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications
Creators: name: Li, Xue
name: Simon, Ulla
name: Bekheet, Maged F.
name: Gurlo, Aleksander
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: photocatalysis
subject: natural mineral support
subject: synergistic effect
subject: dye-sensitization

description: Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. This review article discusses the current progress regarding the use of various mineral classes in photocatalytic applications. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. This work aims to provide a complete research overview of the mineral-supported photocatalysts and summarizes the common synergistic effects between different mineral substrates and photocatalysts as well as to inspire more possibilities for natural mineral application in photocatalysis.
Thirty Years of Turnstiles and Transport
Creators: name: Meiss, J. D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: To characterize transport in a deterministic dynamical system is to compute exit time distributions from regions or transition time distributions between regions in phase space. This paper surveys the considerable progress on this problem over the past thirty years. Primary measures of transport for volume-preserving maps include the exiting and incoming fluxes to a region. For area-preserving maps, transport is impeded by curves formed from invariant manifolds that form partial barriers, e.g., stable and unstable manifolds bounding a resonance zone or cantori, the remnants of destroyed invariant tori. When the map is exact volume preserving, a Lagrangian differential form can be used to reduce the computation of fluxes to finding a difference between the action of certain key orbits, such as homoclinic orbits to a saddle or to a cantorus. Given a partition of phase space into regions bounded by partial barriers, a Markov tree model of transport explains key observations, such as the algebraic decay of exit and recurrence distributions.
description: Updated and corrected version
A Framework and Benchmark for Deep Batch Active Learning for Regression
Creators: name: Holzmüller, David
name: Zaverkin, Viktor
name: Kästner, Johannes
name: Steinwart, Ingo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: The acquisition of labels for supervised learning can be expensive. To improve the sample efficiency of neural network regression, we study active learning methods that adaptively select batches of unlabeled data for labeling. We present a framework for constructing such methods out of (network-dependent) base kernels, kernel transformations, and selection methods. Our framework encompasses many existing Bayesian methods based on Gaussian process approximations of neural networks as well as non-Bayesian methods. Additionally, we propose to replace the commonly used last-layer features with sketched finite-width neural tangent kernels and to combine them with a novel clustering method. To evaluate different methods, we introduce an open-source benchmark consisting of 15 large tabular regression data sets. Our proposed method outperforms the state-of-the-art on our benchmark, scales to large data sets, and works out-of-the-box without adjusting the network architecture or training code. We provide open-source code that includes efficient implementations of all kernels, kernel transformations, and selection methods, and can be used for reproducing our results.
description: Published at the Journal of Machine Learning Research (JMLR). Changes in v4: Improvements in writing and other minor changes. Accompanying code can be found at https://github.com/dholzmueller/bmdal_reg
Maximal stimulation of meiotic recombination by a yeast transcription factor requires the transcription activation domain and a DNA-binding domain.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: The DNA sequences located upstream of the yeast HIS4 represent a very strong meiotic recombination hotspot. Although the activity of this hotspot requires the transcription activator Rap1p, the level of HIS4 transcription is not directly related to the level of recombination. We find that the recombination-stimulating activity of Rap1p requires the transcription activation domain of the protein. We show that a hybrid protein with the Gal4p DNA-binding domain and the Rap1p activation domain can stimulate recombination in a strain in which Gal4p-binding sites are inserted upstream of HIS4. In addition, we find recombination hotspot activity associated with the Gal4p DNA-binding sites that is independent of known transcription factors. We suggest that yeast cells have two types of recombination hotspots, alpha (transcription factor dependent) and beta (transcription factor independent).
Der Papst über die wahren Aufgaben der Kunst, zumal der Schauspielkunst
Creators: name: Pius XII., Papst
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 1 Nr. 11/12 (1946): Herder Korrespondenz, Band 1, Heft 11/12
Constraining the distribution of dark matter in dwarf spheroidal galaxies with stellar tidal streams
Creators: name: Errani, Raphaël
name: Peñarrubia, Jorge
name: Tormen, Giuseppe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use high-resolution N-body simulations to follow the formation and evolution of tidal streams associated to dwarf spheroidal galaxies (dSphs). The dSph models are embedded in dark matter (DM) haloes with either a centrally-divergent 'cusp', or an homogeneous-density 'core'. In agreement with previous studies, we find that as tides strip the galaxy the evolution of the half-light radius and the averaged velocity dispersion follows well-defined tracks that are mainly controlled by the amount of mass lost. Crucially, the evolutionary tracks behave differently depending on the shape of the DM profile: at a fixed remnant mass, dSphs embedded in cored haloes have larger sizes and higher velocity dispersions than their cuspy counterparts. The divergent evolution is particularly pronounced in galaxies whose stellar component is strongly segregated within their DM halo and becomes more disparate as the remnant mass decreases. Our analysis indicates that the DM profile plays an important role in defining the internal dynamics of tidal streams. We find that stellar streams associated to cored DM models have velocity dispersions that lie systematically above their cuspy counterparts. Our results suggest that the dynamics of streams with known dSph progenitors may provide strong constraints on the distribution of DM on the smallest galactic scales.
description: 5 pages, 4 figures
CSC Vitae
Creators: Ikast-Brande Kommune
Botilbud Bellisbo
Bofællesskaberne Grundtvigsvej
Bostøtte VUH-SHS
Brande Åcenter
Bøgehusene
Værkstedet Lundgården
Botilbud Marienlund
Dagcentret Regnbuen
Skovbjergparken
Den Blå Cafe - Socialpsykatrisk Center Nord
Socialpsykiatrisk Center Syd
Startboligerne
Publisher: name: Rigsarkivet
Year: 2023

description: Formålet med IT-systemet er at samle dokumentation vedr. sagsbehandling, ydelser, intern kommunikation m.v. i forhold til borgere der modtager ydelser inden for Serviceloven, og Sundhedsloven. Derudover kunne kommunikere elektronisk med sygehuse, læger, apoteker, andre kommuner i forhold til de gældende sundhedsaftaler. Kunne levere elektronisk data til Danmarks Statistik om borgernes ydelser m.m. samt danne grundlag for styring af økonomi og ressourcer. Kunne opfylde den Nationale IT-strategi om digitalisering.
Strain Driven Anomalous Anisotropic Enhancement in the Thermoelectric Performance of monolayer MoS$_{2}$
Creators: name: Chaudhuri, Saumen
name: Bhattacharya, Amrita
name: Das, A. K.
name: Das, G. P.
name: Dev, B. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First principles density functional theory based calculations have been performed to investigate the strain and temperature induced tunability of the thermoelectric properties of monolayer (ML) MoS$_2$. Modifications in the electronic and phononic transport properties, under two anisotropic uniaxial strains along the armchair (AC) and zigzag (ZZ) directions, have been explored in detail. Considering the intrinsic carrier-phonon scattering, we found that the charge carrier mobility ($μ$) and relaxation time ($τ$) increase remarkably for strains along the ZZ direction. Concomitantly, strain along the ZZ direction significantly reduces the lattice thermal conductivity ($κ_\text{L}$) of ML-MoS$_2$. The combined effect of shortened phonon relaxation time and group velocity, and the reduced Debye temperature is found to be the driving force behind the lowering of $κ_\text{L}$. The large reduction in $κ_\text{L}$ and increase in $τ$, associated with the strains along the ZZ direction, act in unison to result in enhanced efficiency and hence, improved thermoelectric performance. Nearly $150\%$ enhancement in the thermoelectric efficiency can be achieved with the optimal doping concentration. We, therefore, highlight the significance of in-plane tensile strains, in general, and strains along the ZZ direction, in particular, in improving the thermoelectric performance of ML-MoS$_2$.
description: 12 pages, 6 captioned figures
Der Papst über die Heiligen Johannes de Britto, Bernardino Realino und Joseph Cafasso
Creators: name: Pius XII., Papst
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 1 Nr. 11/12 (1946): Herder Korrespondenz, Band 1, Heft 11/12
ESDH-system (2017 - 2022)
Creators: Havarikommissionen for civil luftfart og jernbane
Publisher: name: Rigsarkivet
Year: 2023

description: F2 anvendes af alle medarbejdere i Havarikommissionen. Systemet benyttes som journaliseringssystem, men også som arkiv og mailsystem.
Systemet har til formål at opbevare alle former for relevant materiale ifm. undersøgelsessager, personalesager og andet generelt materiale.
Systemet kan anvendes som mailsystem, og er koblet op til den enkelte medarbejders Outlook.
Roles of the C terminus of Armadillo in Wingless signaling in Drosophila.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Drosophila melanogaster Armadillo and its vertebrate homolog beta-catenin play multiple roles during development. Both are components of cell-cell adherens junctions and both transduce Wingless (Wg)/Wnt intercellular signals. The current model for Wingless signaling proposes that Armadillo binds the DNA-binding protein dTCF, forming a bipartite transcription factor that activates Wingless-responsive genes. In this model, Armadillo's C-terminal domain is proposed to serve an essential role as a transcriptional activation domain. In Xenopus, however, overexpression of C-terminally truncated beta-catenin activates Wnt signaling, suggesting that the C-terminal domain might not be essential. We reexamined the function of Armadillo's C terminus in Wingless signaling. We found that C-terminally truncated mutant Armadillo has a deficit in Wg-signaling activity, even when corrected for reduced protein levels. However, we also found that Armadillo proteins lacking all or part of the C terminus retain some signaling ability if overexpressed, and that mutants lacking different portions of the C-terminal domain differ in their level of signaling ability. Finally, we found that the C terminus plays a role in Armadillo protein stability in response to Wingless signal and that the C-terminal domain can physically interact with the Arm repeat region. These data suggest that the C-terminal domain plays a complex role in Wingless signaling and that Armadillo recruits the transcriptional machinery via multiple contact sites, which act in an additive fashion.
On entanglement entropy in 't Hooft model
Creators: name: Goykhman, Mikhail
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the replica trick approach to calculate, in the large-N limit, the entanglement c-function in two-dimensional quantum chromodynamics with the gauge group U(N) and quark in the fundamental representation ('t Hooft model). We show explicitly that the result is equal to a sum (with certain numerical coefficients) of entanglement c-functions of free massive scalars, which represent mesons in spectrum of the 't Hooft model. Interestingly, each meson contributes as a point-like particle. We provide an explanation for why this is the case.
description: v2: discussion and references added
Suppressors of the arabidopsis lsd5 cell death mutation identify genes involved in regulating disease resistance responses.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Cell death is associated with the development of the plant disease resistance hypersensitive reaction (HR). Arabidopsis lsd mutants that spontaneously exhibit cell death reminiscent of the HR were identified previously. To study further the regulatory context in which cell death acts during disease resistance, one of these mutants, lsd5, was used to isolate new mutations that suppress its cell death phenotype. Using a simple lethal screen, nine lsd5 cell death suppressors, designated phx (for the mythological bird Phoenix that rises from its ashes), were isolated. These mutants were characterized with respect to their response to a bacterial pathogen and oomycete parasite. The strongest suppressors-phx2, 3, 6, and 11-1-showed complex, differential patterns of disease resistance modifications. These suppressors attenuated disease resistance to avirulent isolates of the biotrophic Peronospora parasitica pathogen, but only phx2 and phx3 altered disease resistance to avirulent strains of Pseudomonas syringae pv tomato. Therefore, some of these phx mutants define common regulators of cell death and disease resistance. In addition, phx2 and phx3 exhibited enhanced disease susceptibility to different virulent pathogens, confirming probable links between the disease resistance and susceptibility pathways.
Domain Adversarial Graph Convolutional Network Based on RSSI and Crowdsensing for Indoor Localization
Creators: name: Zhang, Mingxin
name: Fan, Zipei
name: Shibasaki, Ryosuke
name: Song, Xuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent years, the use of WiFi fingerprints for indoor positioning has grown in popularity, largely due to the widespread availability of WiFi and the proliferation of mobile communication devices. However, many existing methods for constructing fingerprint datasets rely on labor-intensive and time-consuming processes of collecting large amounts of data. Additionally, these methods often focus on ideal laboratory environments, rather than considering the practical challenges of large multi-floor buildings. To address these issues, we present a novel WiDAGCN model that can be trained using a small number of labeled site survey data and large amounts of unlabeled crowdsensed WiFi fingerprints. By constructing heterogeneous graphs based on received signal strength indicators (RSSIs) between waypoints and WiFi access points (APs), our model is able to effectively capture the topological structure of the data. We also incorporate graph convolutional networks (GCNs) to extract graph-level embeddings, a feature that has been largely overlooked in previous WiFi indoor localization studies. To deal with the challenges of large amounts of unlabeled data and multiple data domains, we employ a semi-supervised domain adversarial training scheme to effectively utilize unlabeled data and align the data distributions across domains. Our system is evaluated using a public indoor localization dataset that includes multiple buildings, and the results show that it performs competitively in terms of localization accuracy in large buildings.
description: IEEE Internet of Things Journal
Sundhedsplejesystem
Creators: Ærø Kommune
Publisher: name: Rigsarkivet
Year: 2023

description: Systemet anvendes af sundhedsplejersker, ergo- og fysioterapeuter i sundhedstjenesten til børn 0-16 år. Informationer om børn og unges helbredsoplysninger angivet af sundhedsplejersker, børneergo- og fysioterapeuter.
Numerical determination of OPE coefficients in the 3D Ising model from off-critical correlators
Creators: name: Caselle, M.
name: Costagliola, G.
name: Magnoli, N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose a general method for the numerical evaluation of OPE coefficients in three dimensional Conformal Field Theories based on the study of the conformal perturbation of two point functions in the vicinity of the critical point. We test our proposal in the three dimensional Ising Model, looking at the magnetic perturbation of the $$, $$ and $$ correlators from which we extract the values of $C^σ_{σε}=1.07(3)$ and $C^ε_{εε}=1.45(30)$. Our estimate for $C^σ_{σε}$ agrees with those recently obtained using conformal bootstrap methods, while $C^ε_{εε}$, as far as we know, is new and could be used to further constrain conformal bootstrap analyses of the 3d Ising universality class.
description: 4 pages, typos corrected, a few references added
SepFree NMF: A Toolbox for Analyzing the Kinetics of Sequential Spectroscopic Data
Creators: name: Sechi, Renata
name: Fackeldey, Konstantin
name: Chewle, Surahit
name: Weber, Marcus
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 150 Psychologie
subject: kinetics from experiments
subject: separability assumption
subject: sequential spectroscopic data

description: This work addresses the problem of determining the number of components from sequential spectroscopic data analyzed by non-negative matrix factorization without separability assumption (SepFree NMF). These data are stored in a matrix M of dimension “measured times” versus “measured wavenumbers” and can be decomposed to obtain the spectral fingerprints of the states and their evolution over time. SepFree NMF assumes a memoryless (Markovian) process to underline the dynamics and decomposes M so that M=WH, with W representing the components’ fingerprints and H their kinetics. However, the rank of this decomposition (i.e., the number of physical states in the process) has to be guessed from pre-existing knowledge on the observed process. We propose a measure for determining the number of components with the computation of the minimal memory effect resulting from the decomposition; by quantifying how much the obtained factorization is deviating from the Markovian property, we are able to score factorizations of a different number of components. In this way, we estimate the number of different entities which contribute to the observed system, and we can extract kinetic information without knowing the characteristic spectra of the single components. This manuscript provides the mathematical background as well as an analysis of computer generated and experimental sequentially measured Raman spectra.
PAL10 - Pensionsafkastbeskatningsloven
Creators: Skatteforvaltningen
Publisher: name: Rigsarkivet
Year: 2023

description:
Formålet med PAL10 systemet for de pågældende årgange, er at administrerer indberetning af PAL-oplysninger for et specifikt indkomstår.
Dette sker på baggrund af indberetninger af angivelser og korrektioner , som foretages af penge- og pensionsinstitutterne.
Indberetning af de pågældende blanketter, kan ligeledes foretages af Skatteforvaltningen. Det er dog alene Skatteforvaltningen der kan indberette kendelser og skønsmæssige ansættelser.
Indberetningerne sker via grænseflade i NTSE og opdateres via web-service i PAL-backend.
Der kan i et kalenderår indberettes til et indkomstår, som svarer til forrige kalenderår.
Indberetningsblanketternes indhold varierer i forhold til virksomhedens forretningsområde i Erhvervssystemet. Der kan indberettes flere blankettyper pr. indkomstår til én virksomhed.
title: Rapports différentiels dans la référentialisation de l’évaluation : des expériences démocratiques ? Essai théorique
Creators: name: Mottier Lopez, Lucie
Publisher: name: La Revue LEeE
Year: 2023
Subjects: différentiel
évaluation
expérience démocratique
référentialisation
référentiel d'évaluation

description: Ce texte présente une réflexion théorique à propos du caractère dynamique des référentiels d’évaluation dans une perspective située de l’activité humaine et de l’apprentissage. Il rompt avec une conception méthodique de la référentialisation en faveur d’une approche compréhensive de l’activité évaluative dans des pratiques socio-institutionnelles données. La notion de différentiel est introduite pour interroger l’expérience potentiellement démocratique, individuelle et collective, produite par des référentialisations en acte et les co-constructions et régulation de sens qui en résultent. À des fins illustratives, le texte expose différentes situations qui montrent la légitimité des différentiels à s’exprimer dans des évaluations formative et certificative à l’école primaire et dans un contexte de développement professionnel. Il interroge l’expérience potentiellement démocratique de cette prise en compte des différentiels dans la référentialisation lorsqu’elle permet notamment de construire des nouvelles significations faisant écho à des situations indéterminées à résoudre.
A screen for mutations that suppress the phenotype of Drosophila armadillo, the beta-catenin homolog.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: During development signaling pathways coordinate cell fates and regulate the choice between cell survival or programmed cell death. The well-conserved Wingless/Wnt pathway is required for many developmental decisions in all animals. One transducer of the Wingless/Wnt signal is Armadillo/beta-catenin. Drosophila Armadillo not only transduces Wingless signal, but also acts in cell-cell adhesion via its role in the epithelial adherens junction. While many components of both the Wingless/Wnt signaling pathway and adherens junctions are known, both processes are complex, suggesting that unknown components influence signaling and junctions. We carried out a genetic modifier screen to identify some of these components by screening for mutations that can suppress the armadillo mutant phenotype. We identified 12 regions of the genome that have this property. From these regions and from additional candidate genes tested we identified four genes that suppress arm: dTCF, puckered, head involution defective (hid), and Dpresenilin. We further investigated the interaction with hid, a known regulator of programmed cell death. Our data suggest that Wg signaling modulates Hid activity and that Hid regulates programmed cell death in a dose-sensitive fashion.
The Mre11p/Rad50p/Xrs2p complex and the Tel1p function in a single pathway for telomere maintenance in yeast.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2000

description: The Mre11p/Rad50p/Xrs2p complex is involved in the repair of double-strand DNA breaks, nonhomologous end joining, and telomere length regulation. TEL1 is primarily involved in telomere length regulation. By an epistasis analysis, we conclude that Tel1p and the Mre11p/Rad50p/Xrs2p complex function in a single pathway of telomere length regulation.
Importancia y uso de las TIC para la investigación científica. Revista Científica ConCiencia Jurídica 1(1): 1-14.
Creators: name: Alvarado-Vélez, Julio A.
name: Villacrés-Malla, María B.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 440710
subject: Research, science and technology policy
classificationCode: 441006
subject: Sociological methodology and research methods
classificationCode: 390301
subject: Continuing and community education
classificationCode: 460101
subject: Applications in arts and humanities
classificationCode: 370301
subject: Exploration geochemistry
classificationCode: 370302
subject: Inorganic geochemistry
classificationCode: 370303
subject: Isotope geochemistry

description: El objetivo de esta investigación es examinar la relevancia del uso de las Tecnologías de la Información y Comunicación (TIC) en el ámbito académico, centrándose en herramientas específicas ampliamente utilizadas por investigadores en todo el mundo. La herramienta analizada en este estudio es academia.edu. Las TIC han revolucionado la forma en que se lleva a cabo la investigación académica, y estas plataformas digitales han desempeñado un papel fundamental en la divulgación y colaboración científica. Academia.edu es una red social académica que permite a los investigadores compartir y acceder a artículos científicos, establecer contactos profesionales y recibir retroalimentación sobre sus investigaciones. La investigación examina la importancia de esta herramienta en términos de acceso a la información científica, colaboración académica y visibilidad de la investigación. Además, se evalúa cómo esta herramienta ha democratizado el acceso a la literatura científica, permitiendo que investigadores de todo el mundo puedan acceder a conocimientos que antes estaban restringidos a instituciones de élite o con recursos limitadis.
Nonlinear closures for scale separation in supersonic magnetohydrodynamic turbulence
Creators: name: Grete, Philipp
name: Vlaykov, Dimitar G
name: Schmidt, Wolfram
name: Schleicher, Dominik R G
name: Federrath, Christoph
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Turbulence in compressible plasma plays a key role in many areas of astrophysics and engineering. The extreme plasma parameters in these environments, e.g. high Reynolds numbers, supersonic and super-Alfvenic flows, however, make direct numerical simulations computationally intractable even for the simplest treatment -- magnetohydrodynamics (MHD). To overcome this problem one can use subgrid-scale (SGS) closures -- models for the influence of unresolved, subgrid-scales on the resolved ones. In this work we propose and validate a set of constant coefficient closures for the resolved, compressible, ideal MHD equations. The subgrid-scale energies are modeled by Smagorinsky-like equilibrium closures. The turbulent stresses and the electromotive force (EMF) are described by expressions that are nonlinear in terms of large scale velocity and magnetic field gradients. To verify the closures we conduct a priori tests over 137 simulation snapshots from two different codes with varying ratios of thermal to magnetic pressure ($β_\mathrm{p} = 0.25, 1, 2.5, 5, 25$) and sonic Mach numbers ($M_s = 2, 2.5, 4$). Furthermore, we make a comparison to traditional, phenomenological eddy-viscosity and $α-β-γ$ closures. We find only mediocre performance of the kinetic eddy-viscosity and $α-β-γ$ closures, and that the magnetic eddy-viscosity closure is poorly correlated with the simulation data. Moreover, three of five coefficients of the traditional closures exhibit a significant spread in values. In contrast, our new closures demonstrate consistently high correlation and constant coefficient values over time and and over the wide range of parameters tested. Important aspects in compressible MHD turbulence such as the bi-directional energy cascade, turbulent magnetic pressure and proper alignment of the EMF are well described by our new closures.
description: 15 pages, 6 figures; to be published in New Journal of Physics
Sparse grid time-discontinuous Galerkin method with streamline diffusion for transport equations
Creators: name: Zeiser, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M60, 65M12

description: High-dimensional transport equations frequently occur in science and engineering. Computing their numerical solution, however, is challenging due to its high dimensionality. In this work we develop an algorithm to efficiently solve the transport equation in moderately complex geometrical domains using a Galerkin method stabilized by streamline diffusion. The ansatz spaces are a tensor product of a sparse grid in space and discontinuous piecewise polynomials in time. Here, the sparse grid is constructed upon nested multilevel finite element spaces to provide geometric flexibility. This results in an implicit time-stepping scheme which we prove to be stable and convergent. If the solution has additional mixed regularity, the convergence of a $2d$-dimensional problem equals that of a $d$-dimensional one up to logarithmic factors. For the implementation, we rely on the representation of sparse grids as a sum of anisotropic full grid spaces. This enables us to store the functions and to carry out the computations on a sequence regular full grids exploiting the tensor product structure of the ansatz spaces. In this way existing finite element libraries and GPU acceleration can be used. The combination technique is used as a preconditioner for an iterative scheme to solve the transport equation on the sequence of time strips. Numerical tests show that the method works well for problems in up to six dimensions. Finally, the method is also used as a building block to solve nonlinear Vlasov-Poisson equations.
Study of Dynamics in Metallic MEMS Cantilevers - Pull-In Voltage and Actuation Speed
Creators: name: Yang, Xiaohui
name: Kästner, Philipp
name: Käkel, Eireen
name: Smolarczyk, Marek
name: Liu, Shujie
name: Li, Qingdang
name: Hillmer, Hartmut
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: MEMS cantilever
subject: pull-in voltage
subject: actuation speed
subject: non-linearity
subject: dynamics
subject: metallic material systems
subject: 620
subject: 660
subject: MEMS
subject: Elektrische Spannung
subject: Geschwindigkeit
subject: Nichtlineares Phänomen
subject: Dynamik
subject: Metallischer Werkstoff

description: Gefördert durch den Publikationsfonds der Universität Kassel
description: This research was funded by Deutscher Akademischer Austauschdienst (DAAD): DAAD STIBET Degree Completion Support 2022 (using corresponding author’s name but no number); Deutsche Forschungsgemeinschaft (DFG):(grant number: Nos Hi 763/21-1 and Hi 763/19-1); Deutsche Bundesstiftung Umwelt (DBU):(grant number: Nos. AZ23717, AZ20012/189, and AZ35501); and Bundesministerium für Bildung und Forschung (BMBF):(grant number: Nos. 13N14517 and 13N15740).
MASTRA
Creators: Vejdirektoratet
Albertslund
Allerød
Assens
Ballerup
Billund
Bornholm
Brøndby
Dragør
Egedal
Esbjerg
Favrskov
Faxe
Fredensborg
Fredericia
Frederiksberg
Frederikshavn
Frederikssund
Furesø
Faaborg-Midtfyn
Gentofte
Glostrup
Greve
Gribskov
Guldborgsund
Haderslev
Halsnæs
Hedensted
Helsingør
Herlev
Herning
Hillerød
Hjørring
Holbæk
Holstebro
Horsens
Hvidovre
Høje-Taastrup
Hørsholm
Ikast-Brande
Ishøj
Jammerbugt
Kalundborg
Kerteminde
Kolding
København
Køge
Lejre
Lemvig
Lolland
Lyngby-Taarbæk
Middelfart
Nordfyns
Nyborg
Næstved
Odder
Odense
Odsherred
Randers
Rebild
Ringkøbing-Skjern
Ringsted
Roskilde
Rudersdal
Rødovre
Silkeborg
Skanderborg
Skive
Slagelse
Solrød
Sorø
Stevns
Svendborg
Syddjurs
Sønderborg
Thisted
Tønder
Tårnby
Vallensbæk
Varde
Vejen
Vejle
Vesthimmerlands
Viborg
Vordingborg
Aabenraa
Aalborg
Århus
Gladsaxe
Morsø
Norddjurs
Sund og Bælt
Øresundskonsortiet
Publisher: name: Rigsarkivet
Year: 2023

description: Efterbehandling af trafiktællinger og hastighedsmålinger. Data i systemet skabes overvejende ved at nedfræsede spoler i vejene, der er opsat i par, foretager registreringer. Derved kan der tælles antal overkørsler af spolerne og måles hastighed og længde på de passerende køretøjer.
What Causes Cancer in Women with a gBRCA Pathogenic Variant? Counselees’ Causal Attributions and Associations with Perceived Control
Creators: name: Kendel, Friederike
name: Klein, Katharina
name: Schüürhuis, Stephen
name: Besch, Laura
name: Feufel, Markus A.
name: Speiser, Dorothee
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 570 Biowissenschaften; Biologie
subject: hereditary breast and ovarian cancer
subject: gBRCA1/2-PV
subject: causal attributions
subject: personal control
subject: genetic counseling

description: Laypersons have a strong need to explain critical life events, such as the development of an illness. Expert explanations do not always match the beliefs of patients. We therefore assessed causal attributions made by women with a pathogenic germline variant in BRCA1/2 (gBRCA1/2-PV), both with and without a cancer diagnosis. We assumed that attributions would be associated with the control experience. We conducted a cross-sectional study of N = 101 women with a gBRCA1/2-PV (mean age 43.3 ± 10.9). Women answered self-report questionnaires on perceived causes and control. Most women (97%) named genes as a causal factor for the development of cancer. Surprisingly, the majority of women also named stress and health behavior (both 81%), environment (80%), and personality (61%). Women with a cancer diagnosis tended to endorse more causes. The attributions to personality (ρ = 0.39, p < 0.01) health behavior (ρ = 0.44, p < 0.01), and environment (ρ = 0.22, p < 0.05) were significantly associated with personal control, whereas attribution to genes showed a small, albeit significant association with treatment control (ρ = 0.20, p < 0.05). Discussing causal beliefs in clinical counseling may provide a “window of opportunity” in which risk factors and health behaviors could be better addressed and individually targeted.
Precision bound and optimal control in periodically modulated continuous quantum thermal machines
Creators: name: Das, Arpan
name: Mahunta, Shishira
name: Agarwalla, Bijay Kumar
name: Mukherjee, Victor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use Floquet formalism to study fluctuations in periodically modulated continuous quantum thermal machines. We present a generic theory for such machines, followed by specific examples of sinusoidal, optimal, and circular modulations respectively. The thermodynamic uncertainty relations (TUR) hold for all modulations considered. Interestingly, in the case of sinusoidal modulation, the TUR ratio assumes a minimum at the heat engine to refrigerator transition point, while the Chopped Random Basis (CRAB) optimization protocol allows us to keep the ratio small for a wide range of modulation frequencies. Furthermore, our numerical analysis suggests that TUR can show signatures of heat engine to refrigerator transition, for more generic modulation schemes. We also study bounds in fluctuations in the efficiencies of such machines; our results indicate that fluctuations in efficiencies are bounded from above for a refrigerator, and from below for an engine. Overall, this study emphasizes the crucial role played by different modulation schemes in designing practical quantum thermal machines.
description: 17 pages, 6 figures. Close to published version
Singlet and triplet Cooper pair splitting in hybrid superconducting nanowires
Creators: name: Wang, Guanzhong
name: Dvir, Tom
name: Mazur, Grzegorz P.
name: Liu, Chun-Xiao
name: van Loo, Nick
name: Haaf, Sebastiaan L. D. ten
name: Bordin, Alberto
name: Gazibegovic, Sasa
name: Badawy, Ghada
name: Bakkers, Erik P. A. M.
name: Wimmer, Michael
name: Kouwenhoven, Leo P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In most naturally occurring superconductors, electrons with opposite spins are paired up to form Cooper pairs. This includes both conventional $s$-wave superconductors such as aluminum as well as high-$T_\text{c}$, $d$-wave superconductors. Materials with intrinsic $p$-wave superconductivity, hosting Cooper pairs made of equal-spin electrons, have not been conclusively identified, nor synthesized, despite promising progress. Instead, engineered platforms where $s$-wave superconductors are brought into contact with magnetic materials have shown convincing signatures of equal-spin pairing. Here, we directly measure equal-spin pairing between spin-polarized quantum dots. This pairing is proximity-induced from an $s$-wave superconductor into a semiconducting nanowire with strong spin-orbit interaction. We demonstrate such pairing by showing that breaking a Cooper pair can result in two electrons with equal spin polarization. Our results demonstrate controllable detection of singlet and triplet pairing between the quantum dots. Achieving such triplet pairing in a sequence of quantum dots will be required for realizing an artificial Kitaev chain.
description: Authors' version of the accepted manuscript
Female meiosis drives karyotypic evolution in mammals.
Creators: name: The University of North Carolina at Chapel Hill University Libraries
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: Speciation is often accompanied by changes in chromosomal number or form even though such changes significantly reduce the fertility of hybrid intermediates. We have addressed this evolutionary paradox by expanding the principle that nonrandom segregation of chromosomes takes place whenever human or mouse females are heterozygous carriers of Robertsonian translocations, a common form of chromosome rearrangement in mammals. Our analysis of 1170 mammalian karyotypes provides strong evidence that karyotypic evolution is driven by nonrandom segregation during female meiosis. The pertinent variable in this form of meiotic drive is the presence of differing numbers of centromeres on paired homologous chromosomes. This situation is encountered in all heterozygous carriers of Robertsonian translocations. Whenever paired chromosomes have different numbers of centromeres, the inherent asymmetry of female meiosis and the polarity of the meiotic spindle dictate that the partner with the greater number of centromeres will attach preferentially to the pole that is most efficient at capturing centromeres. This mechanism explains how chromosomal variants become fixed in populations, as well as why closely related species often appear to have evolved by directional adjustment of the karyotype toward or away from a particular chromosome form. If differences in the ability of particular DNA sequences or chromosomal regions to function as centromeres are also considered, nonrandom segregation is likely to affect karyotype evolution across a very broad phylogenetic range.
SDSS J1138+3517: A quasar showing remarkably variable broad absorption lines
Creators: name: Wildy, Conor
name: Goad, Michael R.
name: Allen, James T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on the highly variable SiIV and CIV broad absorption lines in SDSS J113831.4+351725.2 across four observational epochs. Using the SiIV doublet components, we find that the blue component is usually saturated and non-black, with the ratio of optical depths between the two components rarely being 2:1. This indicates that these absorbers do not fully cover the line-of-sight and thus a simple apparent optical depth model is insufficient when measuring the true opacity of the absorbers. Tests with inhomogeneous (power-law) and pure-partial coverage (step-function) models of the absorbing SiIV optical depth predict the most un-blended doublet's component profiles equally well. However, when testing with Gaussian-fitted doublet components to all SiIV absorbers and averaging the total absorption predicted in each doublet, the upper limit of the power law index is mostly unconstrained. This leads us to favour pure partial coverage as a more accurate measure of the true optical depth than the inhomogeneous power law model. The pure-partial coverage model indicates no significant change in covering fraction across the epochs, with changes in the incident ionizing flux on the absorbing gas instead being favoured as the variability mechanism. This is supported by (a) the coordinated behaviour of the absorption troughs, (b) the behaviour of the continuum at the blue end of the spectrum and (c) the consistency of photoionization simulations of ionic column density dependencies on ionization parameter with the observed variations. Evidence from the simulations together with the CIV absorption profile indicates that the absorber lies outside the broad line region, though the precise distance and kinetic luminosity are not well constrained.
description: Accepted for publication in MNRAS. 17 pages, 12 figures. Replacement 02/03/02015: proof corrections complete, author added
Non-conformal evolution of magnetic fields during reheating
Creators: name: Calzetta, Esteban
name: Kandus, Alejandra
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the evolution of electromagnetic fields coupled to conduction currents during the reheating era after inflation, and prior to the establishing of the proton-electron plasma. We assume that the currents may be described by second order causal hydrodynamics. The resulting theory is not conformally invariant. The expansion of the Universe produces temperature gradients which couple to the current and generally oppose Ohmic dissipation. Although the effect is not strong, it suggests that the unfolding of hydrodynamic instabilities in these models may follow a different pattern than in first order theories, and even than in second order theories on non expanding backgrounds.
description: 33 pages, no figures. Improvements in the text. Some calculations sent to appendices. Accepted for publication in JCAP