cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8
Creators: name: McGreer, Ian D.
name: Hall, Patrick B.
name: Fan, Xiaohui
name: Bian, Fuyan
name: Inada, Naohisa
name: Oguri, Masamune
name: Strauss, Michael A.
name: Schneider, Donald P.
name: Farnsworth, Kara
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the discovery of a gravitationally lensed quasar identified serendipitously in the Sloan Digital Sky Survey (SDSS). The object, SDSS J094604.90+183541.8, was initially targeted for spectroscopy as a luminous red galaxy, but the SDSS spectrum has the features of both a z=0.388 galaxy and a z=4.8 quasar. We have obtained additional imaging that resolves the system into two quasar images separated by 3.06 arcsec and a bright galaxy that is strongly blended with one of the quasar images. We confirm spectroscopically that the two quasar images represent a single lensed source at z=4.8 with a total magnification of 3.2, and we derive a model for the lensing galaxy. This is the highest redshift lensed quasar currently known. We examine the issues surrounding the selection of such an unusual object from existing data and briefly discuss implications for lensed quasar surveys.
description: AJ accepted, 9 pages, 6 figures, referee suggestions included
Accidentally tourism: Symmetry and object lessons from an urban design laboratory
Creators: name: Picken, FE
Publisher: name: University Of Tasmania
Year: 2023

description: Tourism, like most social phenomena has tended to be studied and measured in terms of the intentions, meanings and actions of people. 'Humanist tourism theory' (Franklin 2003) is the norm and not until recently has there been any inclination to question this. This research begins by asking what tourism is when it is not assumed to be 'a purely human accomplishment' (after Haldrup and Larsen 2006) but when emphasis is given instead to the hybrid nature of social phenomena that is 'teeming with things' (Franklin 2003: 98). Using a 'symmetrical' (Serres 1991/1997) approach, it is claimed that tourism is a performance that includes humans and non-humans and this means some of the actors, according to human design, intention or understanding, are variously 'indifferent' to what they are supposed or meant to be (after Latour 1997a). This indifference retains a potential to 'misbehave' and then profoundly challenge humanist tourism theory so that when they intervene there is no longer 'reliable tourism theory'. Instead with a more inclusive list of actors 'tourism as an ordering' (Franklin 2004) begins to emerge and this research presents an ethnographic study of how this happens in a well-visited place called Sullivans Cove in Hobart, Australia. The Urban Design Framework is one of the most intentional statements about the rebuilding and design of Sullivans Cove and in consolidating things like people, buildings, mountains and law it acts as an 'urban design laboratory'. A series of 'object-laden' lessons are taken from this laboratory by following two successive developments or 'experiments'. First, hotel accommodation Zero Davey carried tourism through the design laboratory where it was enrolled with various orderings only some of which 'care' about tourism. Here the laboratory acted as a largely indifferent 'means' to a tourismrelated 'end'. However, in next staging an International Design Competition these 'means' and 'ends' became transferable when to achieve a 'winning design entry' and 'designer label' for Sullivans Cove the laboratory adopted many of established 'means' of the tourism industry. These experiments show Sullivans Cove is 'accidentally tourism' and that as an ordering tourism behaves in complex and sometimes opposing ways. When tourism research includes 'things' as conspirators, assumptions like 'tourism places are planned that way' are found inadequate for recognising or explaining the more transformative abilities of tourism because these are a virtue of heterogeneous compositions and the multiple competencies they allow. By viewing tourism as an ordering it is possible to see how developments such as those in Sullivans Cove result not from within a separable and coherent realm of tourism on the social margin, but from more distributed and post humanist agency.
Effects of cold atmospheric pressure plasma and disinfecting agents on Candida albicans in root canals of extracted human teeth
Creators: name: Kerlikowski, Anne
name: Matthes, Rutger
name: Pink, Christiane
name: Steffen, Heike
name: Schlüter, Rabea
name: Holtfreter, Birte
name: Weltmann, Klaus-Dieter
name: Von Woedtke, Thomas
name: Kocher, Thomas
name: Jablonowski, Lukasz
Publisher: name: Weinheim : Wiley-VCH-Verl.
Year: 2020
Subjects: subject: Candida albicans
subject: cold atmospheric pressure plasma
subject: human teeth
subject: medical plasma
subject: root canal
subject: 570
subject: 610

description: Reinfection in endodontically treated teeth is linked to the complexity of the root canal system, which is problematic to reach with conventional disinfection methods. As plasma is expected to have the ability to sanitize narrow areas, the aim of this study was to analyze the effect of cold atmospheric pressure plasma (CAP) on Candida albicans in root canals of extracted human teeth. CAP was applied as mono treatment and in combination with standard endodontic disinfectants (sodium hypochlorite, chlorhexidine and octenidine). Disinfection efficiency was evaluated as reduction of the logarithm of colony forming units per milliliter (log10 CFU/mL) supported by scanning electron microscopy as imaging technique. Plasma alone showed the highest reduction of log10 CFU, suggesting the best disinfection properties of all tested agents. © 2020 The Authors. Journal of Biophotonics published by Wiley-VCH GmbH.
Self-gravitating astrophysical mass with singular central density vibrating in fundamental mode
Creators: name: Bastrukov, S. I.
name: Chang, H. -K.
name: Wu, E. -H.
name: Molodtsova, I. V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The fluid-dynamical model of a self-gravitating mass of viscous liquid with singular density at the center vibrating in fundamental mode is considered in juxtaposition with that for Kelvin fundamental mode in a homogeneous heavy mass of incompressible inviscid liquid. Particular attention is given to the difference between spectral formulae for the frequency and lifetime of $f$-mode in the singular and homogeneous models. The newly obtained results are discussed in the context of theoretical asteroseismology of pre-white dwarf stage of red giants and stellar cocoons -- spherical gas-dust clouds with dense star-forming core at the center.
description: Mod. Phys. Lett. A, Vol. 24, No. 40 (2009) pp. 3257-3274
Exceptional points in the spectra of atoms in external fields
Creators: name: Cartarius, Holger
name: Main, Jörg
name: Wunner, Günter
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate exceptional points, which are branch point singularities of two resonance eigenstates, in spectra of the hydrogen atom in crossed external electric and magnetic fields. A procedure to systematically search for exceptional points is presented, and their existence is proven. The properties of the branch point singularities are discussed with effective low-dimensional matrix models, their relation with avoided level crossings is analyzed, and their influence on dipole matrix elements and the photoionization cross section is investigated. Furthermore, the rare case of a connection between three resonances almost forming a triple-degeneracy in the form of a cubic root branch point is discussed.
description: 12 pages, 9 figures, 1 table
Historical perspective for a literature curriculum
Creators: name: Coburn, Marnie Alice
Publisher: name: University of British Columbia
Year: 2011

description: This study investigates the relationship between history and literature in the English curriculum of the school. The investigation moves in two directions, one leading to an examination of the boundary between English and history to see if the barrier between these two humanistic studies can be lowered. The other leads to an analysis of the prescribed texts to determine the times in literary history from which the selections in these texts were taken and the effects the times are likely to have on students’ understanding of their own culture. The teaching of historical literature contributes to students’ enjoyment of literature. For the purpose of this study this hypothesis limits the definition of "historical" literature to imaginative writing describing historical events, attitudes, and characters; expository accounts of exploration; and to literature written before this century. "Enjoyment" refers to immediate pleasure and also to enduring insights; that is, to a sense of heritage, understanding of desirable and possible values, and recognizing the attitudes to recurring themes expressed at different points in time. In this thesis I have examined the purpose of general education and then the contributions of English literature to the curriculum of general education. When I realized the effects of fragmentation of learning on general education and on English teaching, I began to consider how this trend toward subdividing knowledge could be reversed. The common interest of English and history in human beings suggested that their contiguity could be exploited and I have therefore written at length on the relationships between them. The correlation of these subjects in the classroom has rewards as well as perils, as I have pointed out, but by relating my personal experience I have shown that it can be done by one teacher in normal teaching conditions. The concluding parts of the thesis deal with the extension of selections into the past and offer annotated bibliographies. Rather than a "proof" or a "disproof," this thesis is designed to give a new and interesting approach to old ideas.
Chirality Induced Tilted-Hill Giant Nernst Signal
Creators: name: Kotetes, Panagiotis
name: Varelogiannis, Georgios
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We reveal a novel source of giant Nernst response exhibiting strong non-linear temperature and magnetic field dependence including the mysterious tilted-hill temperature profile observed in a pleiad of materials. The phenomenon results directly from the formation of a chiral ground state, e.g. a chiral d-density wave, which is compatible with the eventual observation of diamagnetism and is distinctly different from the usual quasiparticle and vortex Nernst mechanisms. Our picture provides a unified understanding of the anomalous thermoelectricity observed in materials as diverse as hole doped cuprates and heavy-fermion compounds like URu2Si2.
description: 5 pages and 4 figures, Final version accepted by Phys. Rev. Lett
The short and longer term implications of beta-blocker use in cardiology patients with airways disease
Creators: name: Cochrane, B
Publisher: name: University Of Tasmania
Year: 2023

description: Coronary atherosclerosis and chronic obstructive pulmonary disease (COPD) are highly prevalent, and two of the commonest causes of morbidity and mortality in the Australian population. They share cigarette smoking as an important risk factor, and frequently coexist. Drugs which act on the beta-adrenergic receptor are important therapeutic tools in both diseases. However, beta-receptor antagonists, which are commonly used to treat cardiac disease, theoretically may cause adverse respiratory effects and are traditionally avoided in patients with obstructive airways disease. This work seeks to explore the short and longer term effects of beta-blocker medications, when used for treatment of cardiac disease in patients with coexisting obstructive airways disease. Specifically, the aims of this research are: 1. To estimate the prevalence of coexisting obstructive airways disease amongst patients with cardiac disease 2. To investigate current beta-blocker prescribing practice in patients with obstructive airways disease 3. To document adverse respiratory effects of beta-blocker medications, in terms of symptoms, lung function and other longer term health outcomes. Within 24 hours of hospital admission for suspected cardiac disease, patients were screened for airways obstruction, using spirometry. Spirometry results demonstrated a high level of coexistence of cardiac disease and obstructive airways disease, about twice that cited in previously published estimates. Documentation of beta-blocker prescribing practices within the Royal Prince Alfred Hospital's Cardiology Unit revealed minimal prescription of these medications to patients with previously diagnosed chronic obstructive airways disease and asthma, despite limited evidence of adverse effects of beta-blocker use in such patients. This notably occurred even when guidelines recommended beta-blockade as first line therapy, and where survival benefit was established. However, many patients with obstructive spirometry, but no formal diagnosis of obstructive airways disease, did receive betablockers. Longitudinal analysis of symptom assessment, lung function and health outcomes was performed. Lung function and respiratory symptoms data were collected over a twelve month period and data pertaining to beta-blocker discontinuation, respiratory exacerbations, acute cardiac events and survival were collected over almost six years. There was no indication of a statistically significant adverse beta-blocker effect on lung function, respiratory symptoms or survival but beta-blocker medications did appear to increase respiratory exacerbation rates. This work confirms the very high frequency of obstructive airways disease existing in combination with cardiac disease in an Australian urban population, which had been suspected but not previously documented. However, its major contribution is to provide prospective long term respiratory health outcome data for the use of betablocker medications in this group.
title: Bioarchéologie : synthèse et perspectives
Creators: name: Séara, Frédéric
Publisher: name: Inrap
Year: 2021

description: Les 31 communications et 11 posters proposés durant les deux journées du séminaire Bioarchéologie : minimums méthodologiques, référentiels communs et nouvelles approches ont permis de préciser les apports des différentes disciplines à l’analyse et à la caractérisation des sites archéologiques, tout en soulevant la question centrale de la place actuellement réservée à la bioarchéologie. C’est sous le signe de la richesse, de la variété et de la complémentarité que ce sujet de l’inscription de la bioarchéologie dans la démarche archéologique a été débattu, au travers d’échanges passionnants et presque toujours passionnés. Assez logiquement, les discussions ont principalement porté sur les problématiques liées au domaine de l’archéologie préventive, sans que soit totalement occulté celui de l’archéologie programmée. Cette dernière, caractérisée par le ciblage de sites non menacés retenus pour leurs forts enjeux scientifiques, par une segmentation opérationnelle forte et des dotations budgétaires souvent modestes, aurait justifié une évaluation plus poussée de la place qu’elle consacre à la bioarchéologie. Si, par conséquent, on peut regretter que le format de ce séminaire n’ait pas permis de dresser un panorama plus complet, de nombreux constats posés pour l’archéologie préventive semblent toutefois pouvoir être généralisés.
description: 31 papers and 11 posters presented during the two days of the seminar « Bioarchaeology: Methodological Minimums, Common Frame of Reference, and New Approaches » clarified the contributions of different disciplines to the analysis and characterization of archaeological sites, while raising the central question of the place currently reserved for bioarchaeology. It is under the sign of richness, variety and complementarity that this subject of the inscription of bioarchaeology in the archaeological approach was debated, through passionate and almost always heated exchanges. Logically enough, the discussions focused mainly on the problems linked to the field of preventive archaeology, without totally overshadowing that of programmed archaeology. The latter, characterized by the targeting of non-threatened sites selected for their high scientific stakes, by a strong operational segmentation and by often modest budgetary allocations, would have justified a more thorough evaluation of the place it devotes to bioarchaeology. If, therefore, it is regrettable that the format of this seminar did not allow for a more complete panorama, many of the observations made for preventive archaeology seem to be generalizable
Automated and rapid identification of multidrug resistant Escherichia coli against the lead drugs of acylureidopenicillins, cephalosporins, and fluoroquinolones using specific Raman marker bands
Creators: name: Götz, Theresa
name: Dahms, Marcel
name: Kirchhoff, Johanna
name: Beleites, Claudia
name: Glaser, Uwe
name: Bohnert, Jürgen A.
name: Pletz, Mathias W.
name: Popp, Jürgen
name: Schlattmann, Peter
name: Neugebauer, Ute
Publisher: name: Weinheim : Wiley-VCH-Verl.
Year: 2020
Subjects: subject: antibiotic susceptibility testing
subject: Escherichia coli
subject: multidrug-resistant Gram-negative bacteria
subject: Raman spectroscopy
subject: weighted sum score
subject: 570
subject: 610

description: A Raman-based, strain-independent, semi-automated method is presented that allows the rapid (<3 hours) determination of antibiotic susceptibility of bacterial pathogens isolated from clinical samples. Applying a priori knowledge about the mode of action of the respective antibiotic, we identified characteristic Raman marker bands in the spectrum and calculated batch-wise weighted sum scores from standardized Raman intensity differences between spectra of antibiotic exposed and nonexposed samples of the same strains. The lead substances for three relevant antibiotic classes (fluoroquinolone ciprofloxacin, third-generation cephalosporin cefotaxime, ureidopenicillin piperacillin) against multidrug-resistant Gram-negative bacteria (MRGN) revealed a high sensitivity and specificity for the susceptibility testing of two Escherichia coli laboratory strains and 12 clinical isolates. The method benefits from the parallel incubation of control and treated samples, which reduces the variance due to alterations in cultivation conditions and the standardization of differences between batches leading to long-term comparability of Raman measurements. © 2020 The Authors. Journal of Biophotonics published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Entanglement in Valence-Bond-Solid States
Creators: name: Korepin, Vladimir E.
name: Xu, Ying
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This article reviews the quantum entanglement in Valence-Bond-Solid (VBS) states defined on a lattice or a graph. The subject is presented in a self-contained and pedagogical way. The VBS state was first introduced in the celebrated paper by I. Affleck, T. Kennedy, E. H. Lieb and H. Tasaki (abbreviation AKLT is widely used). It became essential in condensed matter physics and quantum information (measurement-based quantum computation). Many publications have been devoted to the subject. Recently entanglement was studied in the VBS state. In this review we start with the definition of a general AKLT spin chain and the construction of VBS ground state. In order to study entanglement, a block subsystem is introduced and described by the density matrix. Density matrices of 1-dimensional models are diagonalized and the entanglement entropies (the von Neumann entropy and Renyi entropy) are calculated. In the large block limit, the entropies also approach finite limits. Study of the spectrum of the density matrix led to the discovery that the density matrix is proportional to a projector.
description: Published version, 80 pages, 8 figures; references updated
Looking outside the Galaxy: the discovery of chemical anomalies in 3 old Large Magellanic Cloud clusters
Creators: name: Mucciarelli, A.
name: Origlia, L.
name: Ferraro, F. R.
name: Pancino, E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: By using the multifiber spectrograph FLAMES mounted at the ESO-VLT, we have obtained high-resolution spectra for 18 giant stars, belonging to 3 old globular clusters of the Large Magellanic Cloud (namely NGC 1786, 2210 and 2257). While stars in each cluster showed quite homogeneous iron content, within a few cents of dex (the mean values being Fe/H]= -1.75+-0.01 dex, -1.65+-0.02 dex and -1.95+-0.02 dex for NGC 1786, 2210 and 2257, respectively), we have detected significant inhomogeneities for the [Na/Fe], [Al/Fe], [O/Fe] and [Mg/Fe] abundance ratios, with evidence of [O/Fe] vs [Na/Fe] and [Mg/Fe] vs [Al/Fe] anticorrelations. The trends detected nicely agree with those observed in Galactic Globular Clusters, suggesting that such abundance anomalies are ubiquitous features of old stellar systems and they do not depend on the parent galaxy environment. In NGC 1786 we also detected two extreme O-poor, Na-rich stars. This is the first time that a firm signature of extreme chemical abundance anomalies has been found in an extragalactic stellar cluster.
description: Accepted for publication in ApJL
Nonequilibrium stationary state of a truncated stochastic NLSE: I. Formulation and mean field approximation
Creators: name: Mounaix, Philippe
name: Collet, Pierre
name: Lebowitz, Joel L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82C31; 82D10

description: We investigate the stationary state of a model system evolving according to a modified focusing truncated nonlinear Schrödinger equation (NLSE) used to describe the envelope of Langmuir waves in a plasma. We restrict the system to have a finite number of normal modes each of which is in contact with a Langevin heat bath at temperature $T$. Arbitrarily large realizations of the field are prevented by restricting each mode to a maximum amplitude. We consider a simple modeling of wave-breaking in which each mode is set equal to zero when it reaches its maximum amplitude. Without wave-breaking the stationary state is given by a Gibbs measure. With wave-breaking the system attains a nonequilibrium stationary state which is the unique invariant measure of the time evolution. A mean field analysis shows that the system exhibits a transition from a regime of low field values at small $|λ|$, to a regime of higher field values at large $|λ|$, where $λ<0$ specifies the strength of the nonlinearity in the focusing case. Field values at large $|λ|$ are significantly smaller with wave-breaking than without wave-breaking.
description: REVTeX file, 17 pages, 4 figures, 2 figures added, references added, submitted to Phys. Rev. E
Additional file 1 of Comparative analysis of gut microbiota in healthy and diarrheic yaks
Creators: name: Liu, JunJun
name: Wang, Xin
name: Zhang, Wenqian
name: Kulyar, Muhammad Fakhar-e-Alam
name: Ullah, Kalim
name: Han, Zhaoqing
name: Qin, Jianhua
name: Bi, Chongliang
name: Wang, Yaping
name: Li, Kun
Publisher: name: figshare
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 1: Fig. S1. Clustered heatmap of yaks in different health status at the bacterial genus level. The color values of the heatmap indicate the normalized relative richness of each species. Fig. S2. Clustered heatmap of yaks in different health status at the fungal genus level. The color values of the heatmap indicate the normalized relative richness of each species. Fig. S3. The gut bacterial comparisons between healthy and diarrheic yaks in phylum and genus levels. Metastats analysis was applied to identify the significantly differentially abundant bacterial genera between both groups and all of the data represent means ± SD. * p < 0.05, ** p < 0.01. Fig. S4. The gut fungal comparisons between healthy and diarrheic yaks in phylum and genus levels. Metastats analysis was applied to identify the significantly differentially abundant fungal genera between both groups and all of the data represent means ± SD. * p < 0.05, ** p < 0.01.
On the non-ergodicity of the Swendsen-Wang-Kotecky algorithm on the kagome lattice
Creators: name: Mohar, Bojan
name: Salas, Jesús
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the properties of the Wang-Swendsen-Kotecky cluster Monte Carlo algorithm for simulating the 3-state kagome-lattice Potts antiferromagnet at zero temperature. We prove that this algorithm is not ergodic for symmetric subsets of the kagome lattice with fully periodic boundary conditions: given an initial configuration, not all configurations are accessible via Monte Carlo steps. The same conclusion holds for single-site dynamics.
description: Latex2e. 22 pages. Contains 11 figures using pstricks package. Uses iopart.sty. Final version accepted in journal
Globally $F$-regular and log Fano varieties
Creators: name: Schwede, Karl E.
name: Smith, Karen E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14J45, 13A35, 14B05

description: We prove that every globally $F$-regular variety is log Fano. In other words, if a prime characteristic variety $X$ is globally $F$-regular, then it admits an effective $\bQ$-divisor $Δ$ such that $-K_X - Δ$ is ample and $(X, Δ)$ has controlled (Kawamata log terminal, in fact globally $F$-regular) singularities. A weak form of this result can be viewed as a prime characteristic analog of de Fernex and Hacon's new point of view on Kawamata log terminal singularities in the non-$\bQ$-Gorenstein case. We also prove a converse statement in characteristic zero: every log Fano variety has globally $F$-regular type. Our techniques apply also to $F$-split varieties, which we show to satisfy a "log Calabi-Yau" condition. We also prove a Kawamata-Viehweg vanishing theorem for globally $F$-regular pairs.
description: 31 pages, minor changes throughout. The presentation of section 5 improved. To appear in Advances in Mathematics
Notas de Trabajo en campo Workshop: Sociedad Datificada y Educación. Más allá de la abundancia de datos, hacia una perspectiva crítica y constructiva
Creators: name: Raffaghelli, Juliana Elisa
Publisher: name: Zenodo
Year: 2019
Subjects: data literacy, alfabetización en datos, educadores, sociedad datificada

description: Notas de Trabajo en campo – WORKSHOPS Sociedad Datificada y Educación: Más allá de la abundancia de datos, hacia una perspectiva crítica y constructiva Para la Universitat de Barcelona, Máster d’Entorns D’Ensenyament i Aprenentatge amb Tecnologies Digitals (Máster de Entornos de Enseñanza y Aprendizaje con Tecnologías Digitales) Barcelona, 4-6 de Febrero de 2019 ===================== Este récord de Zenodo ofrece acceso a los recursos y notas de trabajo en campo del workshop desarrollado en tres días sobre el tema "Sociedad datificada y educación". Para el acceso a los materiales (diapositivas, cuestionarios, recursos para el diseño educativo) ver la publicación en el blog de la autora. Las notas de trabajo en campo se adjuntan en este récord.
description: Se agradece al docente Jordi Quintana Albalat, de la Universitat de Barcelona, por la gentil invitación a desarrollar esta actividad.
Simulation and Performance Analysis of MP-OLSR for Mobile Ad hoc Networks
Creators: name: Yi, Jiazi
name: Cizeron, Eddy
name: Hamma, Salima
name: Parrein, Benoît
Publisher: name: arXiv
Year: 2009
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Mobile ad hoc networks (MANETs) consist of a collection of wireless mobile nodes which dynamically exchange data without reliance on a fixed base station or a wired backbone network, which makes routing a crucial issue for the design of a ad hoc networks. In this paper we discussed a hybrid multipath routing protocol named MP-OLSR. It is based on the link state algorithm and employs periodic exchange of messages to maintain topology information of the networks. In the mean time, it updates the routing table in an on-demand scheme and forwards the packets in multiple paths which have been determined at the source. If a link failure is detected, the algorithm recovers the route automatically. Concerning the instability of the wireless networks, the redundancy coding is used to improve the delivery ratio. The simulation in NS2 shows that the new protocol can effectively improve the performance of the networks.
Report on the established interoperable gateway between IS-ENES VRE and the central IRISCC VRE platform
Creators: name: Khan, Ifran
name: Kindermann, Stephan
name: Spinuso, Alessandro
Publisher: name: Zenodo
Year: 2025
Subjects: Interoperability
Gateway
VRE
Provenance
WPS

description: This report (IRISCC Deliverable D6.7) details the creation and operational deployment of an interoperable Gateway between the IS-ENES Virtual Research Environment (VRE) and the central IRISCC VRE platform. This Gateway is a crucial link between two infrastructures, designed to streamline the access and processing of large climate model datasets in support of the IRISCC demonstrators that will be developed and deployed on the IRISCC VRE, powered by D4Science.

The IS-ENES VRE offers access to petabytes of climate model data from the WCRP Coupled Model Intercomparison Project (CMIP). It also provides specialized processing tools tailored for in-depth climate data analysis. The IRISCC VRE, powered by D4Science, enhances this by providing collaborative tools, computational resources, and interoperability features that benefit the entire IRISCC ecosystem. By connecting these infrastructures, the Gateway merges their strengths, creating a unified environment that enhances the capabilities of both platforms.

Key features of this Gateway include:

●    Federated Authentication: A unified system that integrates the Earth System Grid Federation (ESGF) Authentication and Authorisation Infrastructure (AAI) used by IS-ENES with the European Open Science Cloud (EOSC) Federated AAI supported by D4Science. This enables a seamless Single Sign-On (SSO) experience across both environments.●    Efficient Data Transfer: Robust mechanisms for transferring pre-processed climate data from IS-ENES to the IRISCC VRE, designed to handle large datasets while ensuring data integrity.●    Unified Provenance Management: Integrated provenance tracking to create detailed metadata records, documenting the complete data journey and processing history.●    Seamless Service Integration: Direct access to IS-ENES services within the IRISCC VRE, including CMIP data access and interactive data processing via JupyterHub.

This Gateway directly supports the IRISCC demonstrators (Project's Work Package 4) by giving them easy access to important climate model data and processing tools.
Gelingensbedingungen eines digitalen Sportangebots
Projektvorstellung
Creators: name: Limmeroth, Julia
name: Hagemann, Norbert
name: Heussner, Florian
name: Scheid, Volker
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: 370
subject: 796
subject: Sportangebot
subject: Neue Medien
subject: Digitalisierung
subject: Grundschulunterricht
subject: COVID-19

description: Gefördert im Rahmen des Projekts DEAL
Nonlinear viscoelastic wave propagation: an extension of Nearly Constant Attenuation (NCQ) models
Creators: name: Delépine, Nicolas
name: Lenti, Luca
name: Bonnet, Guy
name: Semblat, Jean-François
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Hysteretic damping is often modeled by means of linear viscoelastic approaches such as "nearly constant Attenuation (NCQ)" models. These models do not take into account nonlinear effects either on the stiffness or on the damping, which are well known features of soil dynamic behavior. The aim of this paper is to propose a mechanical model involving nonlinear viscoelastic behavior for isotropic materials. This model simultaneously takes into account nonlinear elasticity and nonlinear damping. On the one hand, the shear modulus is a function of the excitation level; on the other, the description of viscosity is based on a generalized Maxwell body involving non-linearity. This formulation is implemented into a 1D finite element approach for a dry soil. The validation of the model shows its ability to retrieve low amplitude ground motion response. For larger excitation levels, the analysis of seismic wave propagation in a nonlinear soil layer over an elastic bedrock leads to results which are physically satisfactory (lower amplitudes, larger time delays, higher frequency content).
The Automated Coal Feeder: Improving Reliability by Preventing Clogging of 15% Moisture Coal
Creators: name: Colborn, Mariam
name: Gross, Garin
name: Iqbal, Hamad
name: Simón-Trench, Sofia
Publisher: name: Stanford Digital Repository
Year: 2025
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Public health
subject: Sustainable development--Environmental aspects

description: The Automatic Coal Feeder (ACF) mitigates black carbon pollution from brick kiln production in Bangladesh by delivering a controlled amount of coal into the kiln fire. Currently, unregulated dumping of wet coal (up to 15% moisture content) releases air pollutants and particulate matter harmful to both the environment and human health. While previous ME170 projects developed an affordable ACF effective with dry coal, its performance suffered when using wet coal due to clogging. This fifth iteration aims to enhance ACF reliability with wet coal by addressing two primary clogging points: the hopper and the sandwich mechanism. The agitator blade was redesigned to aerate coal in the hopper while directing it into the sandwich mechanism’s inlet holes. Additionally, increasing hole size and incorporating 58° brass-drafted inserts improved coal flow through the sandwich plates by reducing adhesion. While some coal accumulation still occurred, clogging was eliminated during testing—an unprecedented outcome for the ACF. It successfully dispensed coal with 15% moisture content at a rate of 0.33–0.61 grams per second. Future improvements include mitigating coal buildup in the sandwich mechanism and increasing the feed rate to meet optimal kiln requirements.
Effect of disorder and electron-phonon interaction on interlayer tunnelling current in quantum Hall bilayer
Creators: name: Ros, O. G. C.
name: Lee, D. K. K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the transport properties of the quantum Hall bilayers systems looking closely at the effect that disorder and electron-phonon interaction have on the interlayer tunnelling current in the presence of an in-plane magnetic field $B_\parallel$. We find that it is important to take into account the effect of disorder and electron-phonon interactions in order to predict a finite current at a finite voltage when an in-plane magnetic field is present. We find a broadened resonant feature in the tunnelling current as a function of bias voltage, in qualitative agreement with experiments. We also find the broadening of this resonant feature due to electron-phonon coupling has a non-monotonic dependence on $B_\parallel$, related to the geometry of the double quantum well. We also compare this with the broadening effect due to spatial fluctuations of the tunnelling amplitude. We conclude that such static disorder provides only very weak broadening of the resonant feature in the experimental range.
description: 7 pages, 5 figures
Top Tips for succeeding in your online viva voce
Creators: name: Ahmad, Umar
Publisher: name: Zenodo
Year: 2020
Subjects: Online viva, thesis, oral examination, video conferencing, examiners

description: A webinar title: Top Tips For Succeeding In Your Online Viva. The goal of this webinar is to introduce how online VIVA works. In this pandemic era, most of the activities are being conducted virtually. Hence, people might be wondering "How does Online VIVA works?" as it is something new to many of us. Umar Ahmad shared his experience with Graduate Students of the Faculty of Medicine and Health Sciences about an online viva and how to answer examiner's questions and many more.
Nanoscale Imaging of High-Field Magnetic Hysteresis in Meteoritic Metal Using X-Ray Holography
Creators: name: Blukis, R.
name: Pfau, B.
name: Günther, C.M.
name: Hessing, P.
name: Eisebitt, S.
name: Einsle, J.
name: Harrison, R.J.
Publisher: name: Hoboken, NJ [u.a.] : Wiley
Year: 2020
Subjects: subject: cloudy zone
subject: Tazewell meteorite
subject: X-ray holography
subject: 550

description: Stable paleomagnetic information in meteoritic metal is carried by the “cloudy zone”: ~1–10 μm-wide regions containing islands of ferromagnetic tetrataenite embedded in a paramagnetic antitaenite matrix. Due to their small size and high coercivity (theoretically up to ~2.2 T), the tetrataenite islands carry very stable magnetic remanence. However, these characteristics also make it difficult to image their magnetic state with the necessary spatial resolution and applied magnetic field. Here, we describe the first application of X-ray holography to image the magnetic structure of the cloudy zone of the Tazewell IIICD meteorite with spatial resolution down to ~40 nm and in applied magnetic fields up to ±1.1 T, sufficient to extract high-field hysteresis data from individual islands. Images were acquired as a function of magnetic field applied both parallel and perpendicular to the surface of a ~100 nm-thick slice of the cloudy zone. Broad distributions of coercivity are observed, including values that likely exceed the maximum applied field. Horizontal offsets in the hysteresis loops indicate an interaction field distribution with half width of ~100 mT between the islands in their room temperature single-domain state, providing a good match to first-order reversal curve diagrams. The results suggest that future models of remanence acquisition in the cloudy zone should take account of strong interactions in order to extract quantitative estimates of the paleofield. © 2020. The Authors.
Safe sisters : limitations of sister city relationships for international peace building
Creators: name: Lloyd, BT
Publisher: name: University Of Tasmania
Year: 2023

description: The focus of this study is the capacity of sister city relationships to build international peace under conditions of ongoing geopolitical conflict. Although credited with high potential in popular, political and academic discourses, peace focused sister city relationships have been the subject of minimal empirical research. As socially constructed realities, these relationships offer an opportunity to uncover processes through which personal and collective meanings are translated into structures of social inclusion and exclusion at the local/international interface. As a concrete point of reference, I identify the ideal function of sister city relationships as the boundary object, an abstract or material intermediary through which actors from diverse social worlds work productively together on shared projects. Employing a symbolic interactionist theoretical framework and the research methods of observation, semi-structured interviews and discourse analysis, I examine sister city peace proposals and relationships between American/Australian cities and cities in Palestine and Iraq. I address deficiencies in the existing literature by formulating an empirically and theoretically supported and testable analytical model, comprising two components: the 'concept' (a blend of 'human family' and 'citizen diplomat' tropes) and the 'structure' (the local authority/citizen group dyad). The sister cities peace model is seen to break down under the pressure of competing imperatives to manage risk, preventing the creation of boundary objects. Instead, dissonance within the 'concept' component produces 'consensus objects' (U.S.-Iraqi relationships), which mimic boundary objects by creating a misleading impression that communication across significant difference is being achieved in the interests of positive social change. Incompatible meanings within the 'structure' component result in 'risk objects' (U.S./Australian- Palestinian proposals), which are deemed by local authorities to be sources of danger and consequently ejected from council agendas. The model is concluded to be highly flexible, but insufficiently robust to meet the high expectations placed upon it. For citizen peace actors, its semantic plasticity results either in engulfment of their universal sympathies by nationalist agendas, or disappointment and resentment when their initiatives are rejected at the local scale. For local authorities, it engenders acrimonious divisions within their municipalities and ambiguities in their obligations to citizens. The single successful Western-Palestinian proposal examined is judged to have succeeded due to an atypical absence of local opposition, but is considered significant in other dimensions. The thesis concludes with a discussion of alternative directions in sister city relationships and implications of the study as a whole for local government policy and practice.
Correlated electrons in optically-tunable quantum dots: Building an electron dimer molecule
Creators: name: Singha, Achintya
name: Pellegrini, Vittorio
name: Pinczuk, Aron
name: Pfeiffer, Loren N.
name: West, Ken W.
name: Rontani, Massimo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We observe the low-lying excitations of a molecular dimer formed by two electrons in a GaAs semiconductor quantum dot in which the number of confined electrons is tuned by optical illumination. By employing inelastic light scattering we identify the inter-shell excitations in the one-electron regime and the distinct spin and charge modes in the interacting few-body configuration. In the case of two electrons a comparison with configuration-interaction calculations allows us to link the observed excitations with the breathing mode of the molecular dimer and to determine the singlet-triplet energy splitting.
description: RevTeX 4.0, 6 pages, 6 color PDF figures. Revised version including Supplementary Discussion of Wigner localisation (2 new figures + new version of Fig. 2). To appear in Physical Review Letters
Joint Trends in Flood Magnitudes and Spatial Extents Across Europe
Creators: name: Kemter, Matthias
name: Merz, Bruno
name: Marwan, Norbert
name: Vorogushyn, Sergiy
name: Blöschl, Günter
Publisher: name: Hoboken, NJ [u.a.] : Wiley
Year: 2020
Subjects: subject: classification
subject: climate change
subject: flood
subject: magnitude
subject: spatial statistics
subject: synchrony
subject: 550

description: The magnitudes of river floods in Europe have been observed to change, but their alignment with changes in the spatial coverage or extent of individual floods has not been clear. We analyze flood magnitudes and extents for 3,872 hydrometric stations across Europe over the past five decades and classify each flood based on antecedent weather conditions. We find positive correlations between flood magnitudes and extents for 95% of the stations. In central Europe and the British Isles, the association of increasing trends in magnitudes and extents is due to a magnitude-extent correlation of precipitation and soil moisture along with a shift in the flood generating processes. The alignment of trends in flood magnitudes and extents highlights the increasing importance of transnational flood risk management. ©2020. The Authors.
Transport in strongly correlated two dimensional electron fluids
Creators: name: Spivak, B.
name: Kravchenko, S. V.
name: Kivelson, S. A.
name: Gao, X. P. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present an overview of the measured transport properties of the two dimensional electron fluids in high mobility semiconductor devices with low electron densities, and of some of the theories that have been proposed to account for them. Many features of the observations are not easily reconciled with a description based on the well understood physics of weakly interacting quasiparticles in a disordered medium. Rather, they reflect new physics associated with strong correlation effects, which warrant further study.
description: Final version
Degenerate diffusions arising from gene duplication models
Creators: name: Durrett, Rick
name: Popovic, Lea
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J60, 60J70, 92D15, 92D20 (Primary)

description: We consider two processes that have been used to study gene duplication, Watterson's [Genetics 105 (1983) 745--766] double recessive null model and Lynch and Force's [Genetics 154 (2000) 459--473] subfunctionalization model. Though the state spaces of these diffusions are two and six-dimensional, respectively, we show in each case that the diffusion stays close to a curve. Using ideas of Katzenberger [Ann. Probab. 19 (1991) 1587--1628] we show that one-dimensional projections converge to diffusion processes, and we obtain asymptotics for the time to loss of one gene copy. As a corollary we find that the probability of subfunctionalization decreases exponentially fast as the population size increases. This rigorously confirms a result Ward and Durrett [Theor. Pop. Biol. 66 (2004) 93--100] found by simulation that the likelihood of subfunctionalization for gene duplicates decays exponentially fast as the population size increases.
description: Published in at http://dx.doi.org/10.1214/08-AAP530 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Asymptotic stability and blow up for a semilinear damped wave equation with dynamic boundary conditions
Creators: name: Gerbi, Stéphane
name: Said-Houari, Belkacem
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we consider a multi-dimensional wave equation with dynamic boundary conditions, related to the Kelvin-Voigt damping. Global existence and asymptotic stability of solutions starting in a stable set are proved. Blow up for solutions of the problem with linear dynamic boundary conditions with initial data in the unstable set is also obtained.