cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Complementarity of Multifunctional Agriculture and Rural Development with Rural Tourism and Possibilities for their Implementation in the Republic of Serbia
Creators: name: Vukovic, Predrag
name: Simonovic, Zoran
name: Kljajic, Natasa
name: Vukovic, Predrag
name: Simonovic, Zoran
name: Kljajic, Natasa
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: multifunctionality
subject: agriculture
subject: rural development
subject: model
subject: rural area
subject: economic
subject: activities

description: Rural economy is not strictly related to agriculture, but also includes the so-called non-agricultural income genereting activities in rural areas.. Rural areas in Serbia are characterised by spatial-geographic diversification, socio-economic devastation and relatively good ecological, cultural and historical preservation. Thus, the concept of sustainable development imposes itself as an imperative in strategic planning and is in line with the increasing demands for the development of rural tourism, because it is rural tourism provides opportunities and has the capability to connect a larger number of economic activities in rural areas. The concept of rural tourism cover two complex because it touches upon two important economic sectors: agriculture and tourism. The key question for the Republic of Serbia is determining the “gap” between the current situation and the desired objective. To this end, the paper approaches the complex problem through phases. The first step shows theoretical and methodological approach to the concept of multifunctional agriculture. Later on, the concept of rural tourism is explained with a review of the current situation, and in the end complementarity within the development of rural tourism (between agriculture and tourism) is indicated as well as the significance it would have on initiating the overall economic activities in rural areas. Expectations, based on particular countries’ experiences in the European Union, are that the application of the model of multifunctional agriculture and within it the implementation of rural tourism in areas that possess the necessary conditions, could reinforce the overall economic activities and contribute to ending the current negative trends. The state with its institutional mechanisms and development policy should play an important role in this process.
Estimating N-Point Correlation Functions from Pixelized Sky Maps
Creators: name: Eriksen, H. K.
name: Lilje, P. B.
name: Banday, A. J.
name: Gorski, K. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop, implement and test a set of algorithms for estimating N-point correlation functions from pixelized sky maps. These algorithms are slow, in the sense that they do not break the O(N_pix^N) barrier, and yet, they are fast enough for efficient analysis of data sets up to several hundred thousand pixels. The typical application of these methods is Monte Carlo analysis using several thousand realizations, and therefore we organize our programs so that the initialization cost is paid only once. The effective cost is then reduced to a few additions per pixel multiplet (pair, triplet etc.). Further, the algorithms waste no CPU time on computing undesired geometric configurations, and, finally, the computations are naturally divided into independent parts, allowing for trivial (i.e., optimal) parallelization.
description: 11 pages, 8 figures, accepted for publication in ApJS; textual improvements, references updated
The role of diffusion in branching and annihilation random walk models
Creators: name: Odor, Geza
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Different branching and annihilating random walk models are investigated by cluster mean-field method and simulations in one and two dimensions. In case of the A -> 2A, 2A -> 0 model the cluster mean-field approximations show diffusion dependence in the phase diagram as was found recently by non-perturbative renormalization group method (L. Canet et al., cond-mat/0403423). The same type of survey for the A -> 2A, 4A -> 0 model results in a reentrant phase diagram, similar to that of 2A -> 3A, 4A -> 0 model (G. Ódor, PRE {\bf 69}, 036112 (2004)). Simulations of the A -> 2A, 4A -> 0 model in one and two dimensions confirm the presence of both the directed percolation transitions at finite branching rates and the mean-field transition at zero branching rate. In two dimensions the directed percolation transition disappears for strong diffusion rates. These results disagree with the predictions of the perturbative renormalization group method.
description: 4 pages, 4 figures, 1 table included
First upper limits from LIGO on gravitational wave bursts
Creators: name: LIGO Scientific Collaboration
name: Abbott, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We report on a search for gravitational wave bursts using data from the first science run of the LIGO detectors. Our search focuses on bursts with durations ranging from 4 ms to 100 ms, and with significant power in the LIGO sensitivity band of 150 to 3000 Hz. We bound the rate for such detected bursts at less than 1.6 events per day at 90% confidence level. This result is interpreted in terms of the detection efficiency for ad hoc waveforms (Gaussians and sine-Gaussians) as a function of their root-sum-square strain h_{rss}; typical sensitivities lie in the range h_{rss} ~ 10^{-19} - 10^{-17} strain/rtHz, depending on waveform. We discuss improvements in the search method that will be applied to future science data from LIGO and other gravitational wave detectors.
description: 21 pages, 15 figures, accepted by Phys Rev D. Fixed a few small typos and updated a few references
On the Hardness of Almost All Subset Sum Problems by Ordinary Branch-and-Bound
Creators: name: Tural, Mustafa Kemal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: G.2.1; F.2.0
subject: G.2.1, F.2.0

description: Given $n$ positive integers $a_1,a_2,\dots,a_n$, and a positive integer right hand side $β$, we consider the feasibility version of the subset sum problem which is the problem of determining whether a subset of $a_1,a_2,\dots,a_n$ adds up to $β$. We show that if the right hand side $β$ is chosen as $\lfloor r\sum_{j=1}^n a_j \rfloor$ for a constant $0 < r < 1$ and if the $a_j$'s are independentand identically distributed from a discrete uniform distribution taking values ${1,2,\dots,\lfloor 10^{n/2} \rfloor }$, then the probability that the instance of the subset sum problem generated requires the creation of an exponential number of branch-and-bound nodes when one branches on the individual variables in any order goes to $1$ as $n$ goes to infinity.
description: 5 pages
Photometric Limits on the High Resolution Imaging of Exoplanets Using the Solar Gravity Lens
Creators: name: Willems, Phil A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an analysis of high-resolution imaging of an exoplanet by a meter-class telescope positioned at a real image of the exoplanet created by the solar gravity lens. We assume an exoplanet viewed in full phase and a simple deconvolution method to correct for the intrinsic blur caused by aberrations in the solar gravity lens, and account for the foreground light of the solar corona. We derive equations for the measurement times required for the telescope to produce such a high-resolution image, and find that due to shot noise considerations these times are large compared to human lifespans. We also discuss how measurement times could potentially be significantly shorter for exoplanets with special orbital and rotational parameters.
Tables S1 and S2 from Genotype-environment interaction and the maintenance of genetic variation: an empirical study of Lobelia inflata (Campanulaceae)
Creators: name: Côté, Kristen
name: Simons, Andrew M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Table S1: The number of replicates of the sixteen, four-locus microsatellite genotypes present in each of the four environments used in the study. Genotypes without sufficient replication in a particular environment (–) were not used in analyses that included that environment. A shared letter within each of the four loci (but not among loci) indicates a shared microsatellite allele. The four loci used correspond with Linflata8, Linflata14, Linflata15 and Linflata21 from [1, 2].; Table S2: Allele frequencies at each of the four microsatellite loci at the time of field collection for the 16 unique genotypes used in the study. The use of the same letter names across the four loci is for convenience and does not imply the same allele.
title: Forging diplomacy abroad and at home : French festival culture in a European context, 1572-1615
Creators: name: Van Leuveren, Bram
Publisher: name: University of St Andrews
Year: 2019

description: This doctoral thesis is the first to examine the attempts of the late Valois and early Bourbon rulers of France to make strategic use of festival culture for maintaining national and international relations. It focuses on the period between the Anglo-French Treaty of Blois in 1572 and the Habsburg-Bourbon double marriage in 1615. This research starts from the premise that previous scholarship has given too much credence to royal accounts of festive and ceremonial events, as printed in official commemorative books, and has tended to ignore the conflicting responses of various other players (ambassadors, nobles, generals, scholars, students, and, occasionally, commoners) who attended these events and often advanced very different ambitions, goals, and interests. It seeks in particular to gain a fuller grasp of the reception of festival culture by comparing the intended effects of the ideas, tools, and strategies that French rulers employed with the actual effects they had on stakeholders. Its main concerns are thus twofold: first, the relationship, and frequent tension, between the theories and practices of using festivals and individual festivities for alleged diplomatic purposes, and second, the way in which both formal festivals and ad-hoc festivities functioned as sites where multiple domestic and foreign concerns intersected with or, more often, diverged from, as well as among, each other. The thesis adopts a comparative approach to the topic, analysing pairs of festivals alongside one another and comparing different accounts of those festivals. It draws extensively on a wide range of contemporary sources, many of them previously overlooked, including formal and informal eyewitness accounts, theoretical treatises, and memoirs written in French, English, Dutch, Italian, German, and Latin. What the thesis demonstrates is how both non-French and unofficial sources can help develop a more nuanced view of French festival culture and its diplomatic functioning in a wider European context.
Comparison of Structures, Development and Influence of Basic Conditions of Agriculture and Rural Development on Selected Alpine Regions
Creators: name: Wagner, Klaus
name: Niedemayr, Julia
name: Wagner, Klaus
name: Niedemayr, Julia
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: International Development
subject: agricultural policy
subject: rural development
subject: mountain farming

description: The specific conditions of mountain and especially Alpine farming require experienced and qualified farmers to guarantee sustainable agriculture in a sound ecological and economic environment. Beside natural-resource endowment, cultural, social and political conditions are important influencing factors. Based on a comprehensive study conducted by the authors in 2015, this paper compares the current structures, the development and basic conditions of selected Alpine NUTS III regions in Austria, Germany, Switzerland, France, Italy and Slovenia. Despite the common location in the Alpine space and – with the exception of Switzerland – the EU Common Agricultural Policy (CAP), the regions analysed show considerable variations in altitudes and climatic zones, regional demographic and economic contexts, different approaches in shaping the CAP as well as other basic socio-political conditions, for example taxation and rules of inheritance. Altogether these differences have led to very heterogeneous regional development paths and diverse effects on rural development in the area of conflicts between sustainability, resilience, competitiveness, preservation or innovation of structures, balancing or increasing regional disparities. Comparing these findings with the respective overall national characteristics may be decisive in understanding the necessities of mountain farming.
title: „Man weiß, dass man es tun sollte…“ - Eine theoriegeleitete Untersuchung der Readiness für Vorausschauende Behandlungsplanung
Creators: name: Riedemann, Sarah
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: readiness
Medical sciences Medicine
Medizin
theory of planned behavior
end-of-life
advance care planning

description: In dieser Arbeit wird die Bereitschaft zur Teilnahme an advance care planning (ACP) mithilfe der theory of planned behavior (TPB) untersucht. Die Auswertung erfolgt mittels qualitativer Inhaltsanalyse nach Mayring. Dabei zeigt sich die Bereitschaft als Prozess, welcher verschiedene Stadien und Arten der Bereitschaft beinhaltet (erste Auseinandersetzung, Handlungsbereitschaft, inhaltliche Bereitschaft). Die TPB kann gut hemmenden sowie fördernde Faktoren für die Bereitschaft zur Teilnahme an ACP abbilden. Sie muss jedoch um einige Faktoren wie Voraussetzung für Zugang zu ACP und die wahrgenommene Verhaltenskontrolle im Gesprächsprozess erweitert werden, um das Inanspruchnahmeverhalten von ACP vollständig zu beschreiben. Es folgt eine Handlungsempfehlung zur Förderung der Bereitschaft zur Teilnahme an ACP.
Res3ATN -- Deep 3D Residual Attention Network for Hand Gesture Recognition in Videos
Creators: name: Dhingra, Naina
name: Kunz, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Hand gesture recognition is a strenuous task to solve in videos. In this paper, we use a 3D residual attention network which is trained end to end for hand gesture recognition. Based on the stacked multiple attention blocks, we build a 3D network which generates different features at each attention block. Our 3D attention based residual network (Res3ATN) can be built and extended to very deep layers. Using this network, an extensive analysis is performed on other 3D networks based on three publicly available datasets. The Res3ATN network performance is compared to C3D, ResNet-10, and ResNext-101 networks. We also study and evaluate our baseline network with different number of attention blocks. The comparison shows that the 3D residual attention network with 3 attention blocks is robust in attention learning and is able to classify the gestures with better accuracy, thus outperforming existing networks.
description: 10 pages, 4 figures, International Conference on 3D Vision (3DV 2019), Quebec City, Canada, September 16-19, 2019
Nuclear mass systematics using neural networks
Creators: name: Athanassopoulos, S.
name: Mavrommatis, E.
name: Gernoth, K. A.
name: Clark, J. W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: New global statistical models of nuclidic (atomic) masses based on multilayered feedforward networks are developed. One goal of such studies is to determine how well the existing data, and only the data, determines the mapping from the proton and neutron numbers to the mass of the nuclear ground state. Another is to provide reliable predictive models that can be used to forecast mass values away from the valley of stability. Our study focuses mainly on the former goal and achieves substantial improvement over previous neural-network models of the mass table by using improved schemes for coding and training. The results suggest that with further development this approach may provide a valuable complement to conventional global models.
description: 17 pages, 4 figures, revised version, accepted for publication at Nuclear Physics A
Identifying Cancer Patients at Risk for Heart Failure Using Machine Learning Methods
Creators: name: Yang, Xi
name: Gong, Yan
name: Waheed, Nida
name: March, Keith
name: Bian, Jiang
name: Hogan, William R.
name: Wu, Yonghui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Cardiotoxicity related to cancer therapies has become a serious issue, diminishing cancer treatment outcomes and quality of life. Early detection of cancer patients at risk for cardiotoxicity before cardiotoxic treatments and providing preventive measures are potential solutions to improve cancer patients's quality of life. This study focuses on predicting the development of heart failure in cancer patients after cancer diagnoses using historical electronic health record (EHR) data. We examined four machine learning algorithms using 143,199 cancer patients from the University of Florida Health (UF Health) Integrated Data Repository (IDR). We identified a total number of 1,958 qualified cases and matched them to 15,488 controls by gender, age, race, and major cancer type. Two feature encoding strategies were compared to encode variables as machine learning features. The gradient boosting (GB) based model achieved the best AUC score of 0.9077 (with a sensitivity of 0.8520 and a specificity of 0.8138), outperforming other machine learning methods. We also looked into the subgroup of cancer patients with exposure to chemotherapy drugs and observed a lower specificity score (0.7089). The experimental results show that machine learning methods are able to capture clinical factors that are known to be associated with heart failure and that it is feasible to use machine learning methods to identify cancer patients at risk for cancer therapy-related heart failure.
description: 6 pages, 1 figure, 3 tables, accepted by AMIA 2019
title: Using Measurements of PM2.5 to Assess the Applicability of Low-Cost Sensor Networks for Understanding the Impact of Wildfire Smoke
Creators: name: Abdel-Massih, Michelle
Publisher: name: University Corporation for Atmospheric Research
publisherIdentifier: https://ror.org/04zhhyn23
publisherIdentifierScheme: ROR
Year: 2022

description: Wildland fires emit large quantities of gasses and particulate matter that can be transported downwind, impacting the air quality of communities in the path of the smoke. In 2020, as wildfires spread through the Front Range of Colorado, particulate matter smaller than 2.5 ?m (PM2.5) in the smoke impacted not only the health, but the visibility of those in its path. The Environmental Protection Agency (EPA) manages a sparse network of well-calibrated, research grade PM2.5 measurement instrumentation and has also made recommendations to correct PurpleAir (PA) PM2.5 measurements to better agree with the EPA observations. Previous research has shown that PA monitors have been shown to overestimate PM2.5 in wildfire smoke. Using the PA network of low-cost sensors (LCS) positioned within a 4.5 km radius of EPA-managed research-grade sensors, we explore the ability of the LCS network to quantify wildfire PM2.5. We use data impacted by the 2020 East Troublesome and Cameron Peak Fires in Colorado and assess the EPA recommended PA correction for wildfire smoke. For PA sensors with sufficient data, the EPA correction brought the hourly averaged PA PM2.5 data much closer to the official EPA PM2.5 observations. These results suggest that PA monitors can be reliably used with the EPA correction applied to understand air quality in regions impacted by wildfire smoke, enabling the community-level LCS measurements to increase the spatial resolution of atmospheric measurements available for public health and welfare assessments.
title: How Will Antarctic Precipitation Change in a Warming Future Climate?
Creators: name: Cast, Zaria
Publisher: name: University Corporation for Atmospheric Research
publisherIdentifier: https://ror.org/04zhhyn23
publisherIdentifierScheme: ROR
Year: 2022

description: Due to increased human emissions of greenhouse gasses, temperatures are increasing globally, including in the high-latitude Southern Hemisphere. The Antarctic Ice Sheet (AIS), the largest body of freshwater on Earth, is losing ice in response to global warming. It is expected that the AIS will continue to lose mass and contribute to rising sea levels throughout the remainder of the 21st century. AIS mass balance, and its contribution to sea levels, constitutes the difference between incoming mass at the ice sheet surface (snowfall), and the discharge of ice to the ice shelves and ocean (ice flow). As current and future AIS mass loss will be primarily driven by increased ice flow, it is unclear how much snowfall on the ice sheet will be required to keep the mass balanced. In this research, we analyze historical and future simulations of the Community Earth System Model version 2 (CESM2) produced by the National Center for Atmospheric Research (NCAR). We are comparing the future and historical AIS snowfall to better understand how AIS snowfall will change throughout the 21st century and how much it could potentially offset enhanced AIS mass loss driven by increased ice flow. We found that throughout the future period, snowfall is projected to increase, especially around the coastal regions of the continent.
On the logarithmic coefficient of the entanglement entropy of a Maxwell field
Creators: name: Casini, Horacio
name: Huerta, Marina
name: Magan, Javier M.
name: Pontello, Diego
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We elucidate the mismatch between the $A$-anomaly coefficient and the coefficient of the logarithmic term in the entanglement entropy of a Maxwell field. In contrast to the usual assumptions about the protection of renormalization group charges at the infrared, the logarithmic term is different for a free Maxwell field and a Maxwell field interacting with heavy charges. This is possible because of the presence of superselection sectors in the IR theory. However, the correction due to the coupling with charged vacuum fluctuations, that restores the anomaly coefficient, is independent of the precise UV dynamics. The problem is invariant under electromagnetic duality, and the solution requires both the existence of electric charges and magnetic monopoles. We use a real-time operator approach but we also show how the results for the free and interacting fields are translated into an effective correction to the four-sphere partition function.
description: 25 pages, 2 figures
Zhang_and_Yang_2025_Synoptic_origins_implicate_the_geography_of_exceptional_floods
Creators: name: Zhang, Jinghan
name: Yang, Long
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 370704
subject: Surface water hydrology

description: Python scripts and research data associated with the paper are provided in "Script" and "data" file. The "Script" file includes scripts for synoptic clustering (see Spectral_clustering.ipynb) and figure plotting (see FigureX.ipynb). The "Data" file includes record flood catalog (see Flood_catalog.xlsx) and clustering results for flood days (see Clustering_results_for_flood_days.xlsx).
Nanofiber-based high-Q microresonator for cryogenic applications
Creators: name: Hütner, Johanna
name: Hoinkes, Thomas
name: Becker, Martin
name: Rothhardt, Manfred
name: Rauschenbeutel, Arno
name: Skoff, Sarah M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a cryo-compatible, fully fiber-integrated, alignment-free optical microresonator. The compatibility with low temperatures expands its possible applications to the wide field of solid-state quantum optics, where a cryogenic environment is often a requirement. At a temperature of 4.6 K we obtain a quality factor of $\mathbf{(9.9 \pm 0.7) \times 10^6}$. In conjunction with the small mode volume provided by the nanofiber, this cavity can be either used in the coherent dynamics or the fast cavity regime, where it can provide a Purcell factor of up to 15. Our resonator is therefore suitable for significantly enhancing the coupling between light and a large variety of different quantum emitters and due to its proven performance over a wide temperature range, also lends itself for the implementation of quantum hybrid systems.
description: 9 pages, 3 figures
Additional file 1 of Prenatal exposure to organophosphate pesticides and risk-taking behaviors in early adulthood
Creators: name: Sagiv, Sharon K.
name: Rauch, Stephen
name: Kogut, Katherine R.
name: Hyland, Carly
name: Gunier, Robert B.
name: Mora, Ana M.
name: Bradman, Asa
name: Deardorff, Julianna
name: Eskenazi, Brenda
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
The bimodal galaxy color distribution: dependence on luminosity and environment
Creators: name: Balogh, Michael L.
name: Baldry, Ivan K.
name: Nichol, Robert
name: Miller, Chris
name: Bower, Richard
name: Glazebrook, Karl
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the u-r color distribution of 24346 galaxies with Mr<=-18 and z<0.08, drawn from the Sloan Digital Sky Survey first data release, as a function of luminosity and environment. The color distribution is well fit with two Gaussian distributions, which we use to divide the sample into a blue and red population. At fixed luminosity, the mean color of the blue (red) distribution is nearly independent of environment, with a weakly significant (~3sigma) detection of a trend for colors to become redder by 0.1-0.14 (0.03-0.06) mag with a factor ~100 increase in local density, as characterised by the surface density of galaxies within a +/-1000 km/s redshift slice. In contrast, at fixed luminosity the fraction of galaxies in the red distribution is a strong function of local density, increasing from ~10-30 per cent of the population in the lowest density environments, to ~70 per cent at the highest densities. The strength of this trend is similar for both the brightest (-23
description: ApJ Letters, in press. 5 pages and 3 inline figures,using emulateapj style. Fig 1 larger than in published version. Fit parameters available at http://star-www.dur.ac.uk/~balogh/SDSS/colourfits.html
A Convective Dredge-Up Model as the Origin of Hydrogen in DBA White Dwarfs
Creators: name: Rolland, B.
name: Bergeron, P.
name: Fontaine, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We revisit the problem of the formation of DB white dwarfs, as well as the origin of hydrogen in DBA stars, using a new set of envelope model calculations with stratified and mixed hydrogen/helium compositions. We first describe an approximate model to simulate the so-called convective dilution process, where a thin, superficial hydrogen radiative layer is gradually eroded by the underlying and more massive convective helium envelope, thus transforming a DA white dwarf into a DB star. We show that this convective dilution process is able to account for the large increase in the number of DB white dwarfs below Teff ~ 20,000 K, but that the residual hydrogen abundances expected from this process are still orders of magnitude lower than those observed in DBA white dwarfs. Scenarios involving the accretion of hydrogen from the interstellar medium or other external bodies have often been invoked to explain these overabundances of hydrogen. In this paper, we describe a new paradigm where hydrogen, initially diluted within the thick stellar envelope, is still present and slowly diffusing upward in the deeper layers of a Teff ~ 20,000 K white dwarf. When the convective dilution process occurs, the bottom of the mixed H/He convection zone sinks deep into the star, resulting in large amounts of hydrogen being dredged-up to the stellar surface, a phenomenon similar to that invoked in the context of DQ white dwarfs.
description: Accepted for publication in The Astrophysical Journal (34 pages, 11 figures, 1 table)
Evolución Histórica del Preboste General
Creators: name: Bernabeu, ANTONIO José Leal
Publisher: name: Zenodo
Year: 2021
Subjects: Provost Marshal
Prévôté
Preboste General
Guardia Civil
Policía Militar
Military Police
Carabinieri
Gendarmerie
Barichel
Preboste Marcial

description: In this academic work about the History of Law and Institutions, we will deal with the evolution of the figure of the "Preboste General" (known nowadays as Provost Marshall) from first references about the institution, as representative of the authority of the King in the towns of France and northern Spain, in the High Middle Ages, until its incorporation into the campaign in the sixteenth century. Subsequently, an analysis of their authority and functions in the modern age, since the nineteenth century to nowadays, will be incorporated, as a member of the Guardia Civil in their rol as the current Spanish Military Police. En el presente trabajo de final de grado, sobre la línea de la Historia del Derecho y de las Instituciones, se tratará la evolución de la figura del Preboste General (actualmente denominado Provost Marshall) desde las primeras referencias a la institución, como representativa de la autoridad del Rey en las Villas del norte de España y Francia, en la Alta Edad Media, hasta su incorporación a la campaña ya en el siglo XVI. Posteriormente, se incorporará un análisis de sus competencias y funciones en la edad moderna, a partir del siglo XIX, de la mano del Cuerpo de la Guardia Civil, como Policía Militar actual española.
description: {"references": ["Leal-Bernabeu, A.J. (2019). Evoluci\u00f3n Hist\u00f3rica del Preboste General"]}
System Macromodel of Agricultural Building with Aim to Energy Consumption Minimization
Creators: name: Malinovský, V.
name: Malinovský, V.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Economy of agricultural engineering
subject: heating energy economy
subject: system analysis
subject: temperature time characteristics
subject: expenses optimizing
subject: ambient temperature well-being

description: Economizing on energy intended for heating of agricultural buildings is correlative with their convenient construction from the viewpoint of both thermal and mechanical properties. Therefore, knowledge of temperature time characteristics enables building construction optimizing. This paper deals with process of recognizing elements and parameters of some particular building object, assembling its system macromodel, and analysing temperature time characteristics on its base using appropriate mathematic tools (Laplace and Fourier transformation, matrix characterizing of model parameters) and special software (ANATH). Finally, the resulting temperature time characteristics can be used for an optimal design of some planned agricultural object or for reconstruction of some existing one.
Zhang_and_Yang_2025_Synoptic_origins_implicate_the_geography_of_exceptional_floods
Creators: name: Jinghan, Zhang
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 370704
subject: Surface water hydrology

description: Python scripts and research data associated with the paper are provided in "Script" and "data" file. The "Script" file includes scripts for synoptic clustering (see Spectral_clustering.ipynb) and figure plotting (see FigureX.ipynb). The "Data" file includes record flood catalog (see Flood_catalog.xlsx) and clustering results for flood days (see Clustering_results_for_flood_days.xlsx).
Lineal Trails of D2-D2bar Superstrings
Creators: name: Cho, Jin-Ho
name: Oh, Phillial
name: Park, Cheonsoo
name: Shin, Jonghyeon
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the superstrings suspended between a D2- and an anti-D2-brane. We quantize the string in the presence of some general configuration of gauge fields over the (anti-)D-brane world volumes. The interstring can move only in a specific direction that is normal to the difference of the electric fields of each (anti-)D-branes. Especially when the electric fields are the same, the interstring cannot move. We obtain the condition for the tachyons to disappear from the spectrum.
description: 15 pages with 4 figures, referenced added, Sec. 5 on the spectrum made clearer
Radio-relic and the diffuse emission trail discovered in a low mass galaxy cluster Abell 1697
Creators: name: Paul, Surajit
name: Salunkhe, Sameer
name: Sonkamble, Satish
name: Gupta, Prateek
name: Mroczkowski, Tony
name: Raychaudhury, Somak
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of a putative radio relic, 830 kpc in length and found toward the outskirts of galaxy cluster Abell 1697 ($z=0.181$), using the LOFAR Two Meter Sky Survey (LoTSS) at 144 MHz. With an X-ray-inferred mass of $M_{500}^{X-ray}=2.9^{+0.8}_{-0.7}\times10^{14}~\rm{M_{\odot}}$, this places Abell 1697 among the least massive relic hosts. The relic is also detected at 325 MHz in the Westerbork Northern Sky Survey (WENSS) and at 1.4 GHz in the NRAO VLA Sky Survey (NVSS) with an average spectral index of $α(144,325,1400~\rm{MHz})=-0.98\pm0.01$ and magnetic field of $B_{eq}\sim0.6~μ$G. This relic, located in the northeast periphery of the cluster, is 300 kpc wide, exhibits a gradual spectral steepening across the width ($α_{144 \rm{MHz}}^{1.4\rm{GHz}}(inj)=-0.70\pm0.11$ to $α_{144 \rm{MHz}}^{1.4\rm{GHz}}(edge)=-1.19\pm0.15$), as well as indications of a co-spatial X-ray (ROSAT) shock and the radio relic emission. The radio power of the relic is $P_{1.4GHz}=8.5\pm1.1\times10^{23}~\rm{W\;Hz^{-1}}$, which is found to be in good agreement with the expected empirical correlation between the radio power and Largest Linear Size (LLS) of relics. The relic is trailed by extended ($790\times550$ kpc) diffuse radio emission towards the cluster center, that is likely an ultra-steep spectrum ($α_{144 \rm{MHz}}^{1.4\rm{GHz}}
description: 9 pages, 8 figures, Accepted for publication in A&A
Non-algorithmic theory of randomness
Creators: name: Vovk, Vladimir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62G10, 62F03, 03D32, 68Q30, 62B05

description: This paper proposes an alternative language for expressing results of the algorithmic theory of randomness. The language is more precise in that it does not involve unspecified additive or multiplicative constants, making mathematical results, in principle, applicable in practice. Our main testing ground for the proposed language is the problem of defining Bernoulli sequences, which was of great interest to Andrei Kolmogorov and his students.
description: 15 pages
Effects of Natural Disaster on Rice Production at Farm Level: New Evidence from Vietnam
Creators: name: Nguyen, H.-R.
name: Ngo, Q.-T.
name: Nguyen, N.-D.
name: Nguyen, H.-R.
name: Ngo, Q.-T.
name: Nguyen, N.-D.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research Methods/ Statistical Methods
subject: Current and inter-temporal occurrence effects
subject: current and inter-temporal severity effects
subject: current and intertemporal coping-occurrence effects
subject: current and inter-temporal coping-severity effects
subject: natural disaster
subject: rice production
subject: Vietnam

description: The current study uses a unique balanced panel of 3,922 households between 2008 and 2010 to examine the extent to which rice production in Vietnam is affected by natural disasters and how coping strategies lessen the negative effects of natural disaster, using a fixed effects model that controls for time invariant farm heterogeneity. With regard to natural disaster, we find evidence of the negative inter-temporal occurrence and negative inter-temporal severity effects, and the negative current occurrence one as well. With regard to coping strategies, we find various evidence of current, inter-temporal coping-occurrence and coping-severity effects, depending on kinds of coping strategies.
Heat capacity estimators for random series path-integral methods by finite-difference schemes
Creators: name: Predescu, Cristian
name: Sabo, Dubravko
name: Doll, J. D.
name: Freeman, David L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Previous heat capacity estimators used in path integral simulations either have large variances that grow to infinity with the number of path variables or require the evaluation of first and second order derivatives of the potential. In the present paper, we show that the evaluation of the total energy by the T-method estimator and of the heat capacity by the TT-method estimator can be implemented by a finite difference scheme in a stable fashion. As such, the variances of the resulting estimators are finite and the evaluation of the estimators requires the potential function only. By comparison with the task of computing the partition function, the evaluation of the estimators requires k + 1 times more calls to the potential, where k is the order of the difference scheme employed. Quantum Monte Carlo simulations for the Ne_13 cluster demonstrate that a second order central-difference scheme should suffice for most applications.
description: 11 pages, 4 figures
Geometric Phases for Mixed States during Cyclic Evolutions
Creators: name: Fu, Li-Bin
name: Chen, Jing-Ling
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The geometric phases of cyclic evolutions for mixed states are discussed in the framework of unitary evolution. A canonical one-form is defined whose line integral gives the geometric phase which is gauge invariant. It reduces to the Aharonov and Anandan phase in the pure state case. Our definition is consistent with the phase shift in the proposed experiment [Phys. Rev. Lett. \textbf{85}, 2845 (2000)] for a cyclic evolution if the unitary transformation satisfies the parallel transport condition. A comprehensive geometric interpretation is also given. It shows that the geometric phases for mixed states share the same geometric sense with the pure states.
description: 9 pages, 1 figure
Consensus on communication curriculum content in Danish undergraduate medical education: A Delphi study
Creators: name: Engel, Kirsten Greineder
name: Pedersen, Kamilla
name: Johansen, Mette Dencker
name: Schoennemann, Katrine Rahbek
name: Kjaer, Louise Binow
name: Nayahangan, Leizl Joy
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: The acquisition of skills in patient-centered communication is a critical aspect of medical education which demands both resource-intensive instruction and longitudinal opportunities for learning. Significant variation currently exists in the content and timing of communication education. The aim of this study was to establish consensus regarding communication curriculum content for undergraduate medical education (UME) within the country of Denmark. This study employed a Delphi process which is a widely accepted method for establishing consensus among experts and can be utilized to guide planning and decision-making in education. For this study, consensus was based on greater than 60% agreement between participants. Diverse stakeholders, representing all four universities with medical schools in Denmark, participated in an iterative three-round Delphi process which involved: (1) identifying key curricular elements for medical student education, (2) rating the importance of each item, and (3) prioritizing items relative to one another and rating each item based on the level of mastery that was expected for each skill (i.e. knowledge, performance with supervision, or performance independently). A national sample of 149 stakeholders participated with a 70% response rate for round 1, 81% for round 2, and 86% for round 3. The completed Delphi process yielded 56 content items which were prioritized in rank order lists within five categories: (1) establishing rapport, engaging patient perspectives and responding to needs; (2) basic communication skills and techniques; (3) phases and structure of the encounter; (4) personal characteristics and skills of the student; (5) specific challenging patient groups and context-dependent situations. Using a Delphi process, it was possible to achieve consensus regarding communication curriculum content for UME. These findings provide an important foundation for ensuring greater uniformity in UME, as well as supporting the important longitudinal goals of communication skill development across medical training.
Differential Equations for the 2-Loop Equal Mass Sunrise
Creators: name: Remiddi, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The differential equations for the 2-loop sunrise graph, at equal masses but arbitrary momentum transfer, are used for the analytic evaluation of the coefficients of its Laurent-expansion in the continuous dimension $d$.
description: appolb.cls, 10 pages, 1 figure
Using item response theory to appraise key feature examinations for clinical reasoning
Creators: name: Zegota, Simon
name: Becker, Tim
name: Hagmayer, York
name: Raupach, Tobias
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology

description: Validation of examinations is usually based on classical test theory. In this study, we analysed a key feature examination according to item response theory and compared the results with those of a classical test theory approach. Over the course of five years, 805 fourth-year undergraduate students took a key feature examination on general medicine consisting of 30 items. Analyses were run according to a classical test theory approach as well as using item response theory. Classical test theory analyses are reported as item difficulty, discriminatory power, and Cronbach’s alpha while item response theory analyses are presented as item characteristics curves, item information curves and a test information function. According to classical test theory findings, the examination was labelled as easy. Analyses according to item response theory more specifically indicated that the examination was most suited to identify struggling students. Furthermore, the analysis allowed for adapting the examination to specific ability ranges by removing items, as well as comparing multiple samples with varying ability ranges. Item response theory analyses revealed results not yielded by classical test theory. Thus, both approaches should be routinely combined to increase the information yield of examination data.
A second addition formula for continuous q-ultraspherical polynomials
Creators: name: Koornwinder, Tom H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33D45 (primary); 33D80 (secondary)

description: This paper provides the details of Remark 5.4 in the author's paper "Askey-Wilson polynomials as zonal spherical functions on the SU(2) quantum group", SIAM J. Math. Anal. 24 (1993), 795-813. In formula (5.9) of the 1993 paper a two-parameter class of Askey-Wilson polynomials was expanded as a finite Fourier series with a product of two 3phi2's as Fourier coefficients. The proof given there used the quantum group interpretation. Here this identity will be generalized to a 3-parameter class of Askey-Wilson polynomials being expanded in terms of continuous q-ultraspherical polynomials with a product of two 2phi2's as coefficients, and an analytic proof will be given for it. Then Gegenbauer's addition formula for ultraspherical polynomials and Rahman's addition formula for q-Bessel functions will be obtained as limit cases. This q-analogue of Gegenbauer's addition formula is quite different from the addition formula for continuous q-ultraspherical polynomials obtained by Rahman and Verma in 1986. Furthermore, the functions occurring as factors in the expansion coefficents will be interpreted as a special case of a system of biorthogonal rational functions with respect to the Askey-Roy q-beta measure. A degenerate case of this biorthogonality are Pastro's biorthogonal polynomials associated with the Stieltjes-Wigert polynomials.
description: 17 pages; remarks added; to appear in "Theory and Applications of Special Functions. A Volume Dedicated to Mizan Rahman", M. E. H. Ismail and E. Koelink (eds.), Developments in Mathematics, Kluwer
Axion-photon-dark photon oscillation and its implication for 21 cm observation
Creators: name: Choi, Kiwoon
name: Seong, Hyeonseok
name: Yun, Seokhoon
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the resonant conversion of axion-like particle (ALP) or dark photon to the electromagnetic photon in the early Universe, which takes place due to the ALP-photon-dark photon oscillations in background dark photon gauge fields. It is noted that the corresponding conversion probability can have an unusual spectral feature which allows strong conversion at low frequency domain, but has negligible conversion at high frequencies above certain critical frequency which is determined by the ALP coupling to dark photon and the strength of background dark photon gauge field. We apply this scheme to heat up the 21 cm photons without affecting the Cosmic Microwave Background, which can explain the tentative absorption signal of 21 cm photons detected recently by the EDGES experiment.
description: 1+21 pages, 5 figures