cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pole Inflation - Shift Symmetry and Universal Corrections
Creators: name: Broy, Benedict J.
name: Galante, Mario
name: Roest, Diederik
name: Westphal, Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An appealing explanation for the Planck data is provided by inflationary models with a singular non-canonical kinetic term: a Laurent expansion of the kinetic function translates into a potential with a nearly shift-symmetric plateau in canonical fields. The shift symmetry can be broken at large field values by including higher-order poles, which need to be hierarchically suppressed in order not to spoil the inflationary plateau. The herefrom resulting corrections to the inflationary dynamics and predictions are shown to be universal at lowest order and possibly to induce power loss at large angular scales. At lowest order there are no corrections from a pole of just one order higher and we argue that this phenomenon is related to the well-known extended no-scale structure arising in string theory scenarios. Finally, we outline which other corrections may arise from string loop effects.
description: twocolumn, 9 pages, 1 figure; v2: clarifications and refs added, JHEP layout, 19 pages
06 March 1856: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Assessment of Sexual Coercion Among Addis Ababa University Female Students
Creators: name: Seblework Tadesse
Publisher: name: Zenodo
Year: 2004

description: Cross-sectional institution based survey using self-administered anonymous questionnaire and Focus group discussion, was conducted among female students of Addis Ababa University to determine the magnitude, immediate consequences and socio demographic correlates of sexual coercions. A total of 612 female students were involved in the study. The quantitative study revealed that the prevalence of lifetime completed and attempted rape was 12.7 %( 95%CI, 10.06, 15.33) and 27.5% (95%CI, 3.96, 31.3) respectively. Sexual harassment in lifetime and 12 month period was reported in 58% and 41.8% of students, respectively. Rape was significantly associated for those students, who have boyfriends, and from divorced family as a risk factor, and for those living with both parents before joining university and money sent as needed with near by living families as a protective factor. Promise by friends, physical force and alcohol use were also contributing to the offence. Unwanted pregnancy, abortion and psychological disturbances were the immediate reported consequences of rape victims, which signify the role of rape in these health problems. After their victimization 93.6% of the victims didn't share the event with anybody. Victims reported about the perpetuator that 93.6% was a person known by them.
Constraining the Lorentz invariance violation from the continuous spectra of short gamma-ray bursts
Creators: name: Chang, Zhe
name: Li, Xin
name: Lin, Hai-Nan
name: Sang, Yu
name: Wang, Ping
name: Wang, Sai
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In quantum gravity, a foamy structure of space-time leads to Lorentz invariance violation (LIV). As the most energetic astrophysical processes in the Universe, gamma-ray bursts (GRBs) provide an effective way to probe quantum gravity effects. We use continuous spectra of 20 short GRBs detected by the Swift satellite to give a conservative lower limit of quantum gravity energy scale $M_\textrm{QG} $. Due to the LIV effect, photons with different energy have different velocities. This will lead to the delayed arrival of high energy photons relative to the low energy ones. Based on the fact that the LIV-induced time delay can't be longer than the duration of a GRB, we present the most conservative estimation of the quantum gravity energy scales from 20 short GRBs. The most strict constraint, $M_\textrm{QG}>5.05\times10^{14}$ GeV, is from GRB 140622A.
description: 10 pages, 1 figure, 1 table; Submitted to Chinese Physics C
Teaching Climate Change: Knowledge, Beliefs and Challenges of Primary-School Student Teachers
Creators: name: Breitenmoser, Petra
name: Keller-Schneider, Manuela
Publisher: name: Zenodo
Year: 2021
Subjects: Climate change
Teaching
Primary-school student teachers
Klimawandel
Unterricht
Primarlehrpersonen

description: Teaching climate change is not yet an integral part of primary school curriculum, despite the social relevance of the topic and the interests of the students. Dealing with the complexity of the topic within a controversially discussed political and cultural context is a major challenge for (prospective) teachers. How requirements are perceived influenced by various factors is important for the process of professionalization of (future) teachers. To what extent this also applies to the willingness to teach climate change is examined in this study. Based on the perception-based professionalization approach of Keller-Schneider (2020), which is based on stress and resource theory, it is multi-methodically examined to what extent specific components of the individual and contextual resources are important for the intention of prospective primary school teachers to teach the subject of climate change. The following questions are examined: 1) What previous knowledge and what attitudes (individual resources) do the students have at the beginning of the course and what types can be worked out? (data base: questionnaire, pre-survey) 2) Which requirements do the students perceive as a challenge, to what extent are context factors and social resources important when dealing with the topic? (Data basis: interview). The poster gives an insight into the research project and outlines the theoretical foundations, the design of the study, the instruments used and the analysis steps.
description: +repphzhbib2021A
title: Die standardmäßige Verwendung eines intraop. Schnellschnitts führt zu einer Verringerung der positiven chirurgischen Absetzungsränder und zu einer Erhöhung der Häufigkeit des Erhalts des Gefäß-Nervenbündels bei radikaler Prostatektomie
Creators: name: Preißer, F.
name: Theißen, L.
name: Barthelt, K.
name: Wild, P.
name: Köllermann, J.
name: Graefen, M.
name: Steuber, T.
name: Huland, H.
name: Tilki, D.
name: Kluth, L.
name: Roos, F.
name: Becker, A.
name: Chun, F.
name: Mandel, P.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Der Erhalt des Gefäß-Nervenbündels (NVB) und ein negativer chirurgisches Absetzungsrand (R0) sind die wichtigsten intraoperativen Faktoren, die das funktionelle und onkologische Ergebnis bei Patienten mit radikaler Prostatektomie (RP) beeinflussen. In der vorliegenden Studie[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
MCNP6 simulation of light and medium nuclei fragmentation at intermediate energies
Creators: name: Mashnik, Stepan G.
name: Kerby, Leslie M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fragmentation reactions induced on light and medium nuclei by protons and light nuclei of energies around 1 GeV/nucleon and below are studied with the Los Alamos transport code MCNP6 and with its CEM03.03 and LAQGSM03.03 event generators. CEM and LAQGSM assume that intermediate-energy fragmentation reactions on light nuclei occur generally in two stages. The first stage is the intranuclear cascade (INC), followed by the second, Fermi breakup disintegration of light excited residual nuclei produced after the INC. CEM and LAQGSM account also for coalescence of light fragments (complex particles) up to 4He from energetic nucleons emitted during INC. We investigate the validity and performance of MCNP6, CEM, and LAQGSM in simulating fragmentation reactions at intermediate energies and discuss possible ways of further improving these codes
description: 6 pages, 6 figures, proc. 12th Int. Conf. on Nucleus-Nucleus Collisions (NN2015), June 21-26, 2015, Catania, Italy
22 September 1847: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
title: Führt die Laparoskopie beim Prostatakarzinom zu neuen Metastasierungsmustern?
Creators: name: Bodenbach, M.
name: Bader, P.
name: Frohneberg, D.
name: Teber, D.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Peritoneale Metastasen eines Prostatakarzinoms nach radikaler Prostatektomie sind eine Rarität. Der erste Fallbericht nach laparoskopischer Prostatektomie datiert aus dem Jahr 2011, die erste Veröffentlichung nach roboter-assistierter Operation aus dem Jahr 2012. Seither sind vereinzelte Veröffentlichungen[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
Minimal reduction type and the Kazhdan-Lusztig map
Creators: name: Yun, Zhiwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20G99

description: We introduce the notion of minimal reduction type of an affine Springer fiber, and use it to define a map from the set of conjugacy classes in the Weyl group to the set of nilpotent orbits. We show that this map is the same as the one defined by Lusztig, and that the Kazhdan-Lusztig map is a section of our map. This settles several conjectures in the literature. For classical groups, we prove more refined results by introducing and studying the "skeleta" of affine Springer fibers.
description: minor changes from the published version; fixed a gap in the proof of Theorem 6.1
title: Stellt der Fragebogen zur Erfassung der Belastung Krebskranker (FBK-R10) ein valides Screeninginstrument zur Identifizierung belasteter Patienten nach radikaler Prostatektomie (RPE) dar und beeinflusst es das Outcome?
Creators: name: Butea-Bocu, M. C.
name: Brock, O.
name: Otto, U.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Korreliert die Inanspruchnahme eines psychologischen Gespräches (PSY) während der AHB Maßnahme mit dem Score des FBK-R10 zur Aufnahme und weisen Patienten nach Inanspruchnahme eines Gespräches ein besseres funktionelles Ergebnis auf, verglichen mit im FBK-R10 zwar [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
Control of multiple excited image states around segmented carbon nanotubes
Creators: name: Knörzer, J.
name: Fey, C.
name: Sadeghpour, H. R.
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Electronic image states around segmented carbon nanotubes can be confined and shaped along the nanotube axis by engineering the image potential. We show how several such image states can be prepared simultaneously along the same nanotube. The inter-electronic distance can be controlled a priori by engineering tubes of specific geometries. High sensitivity to external electric and magnetic fields can be exploited to manipulate these states and their mutual long-range interactions. These building blocks provide access to a new kind of tailored interacting quantum systems.
description: 8 pages, 4 figures
title: Robotische Salvage-Lymphadenektomien beim Prostatakarzinom: Ergebnisse und Erfahrungen von 50 Fällen
Creators: name: Linxweiler, J.
name: Al-Kailani, Z.
name: Ezziddin, S.
name: Siemer, S.
name: Ohlmann, C.-H.
name: Stöckle, M.
name: Saar, M.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Bis zu 50% der Patienten entwickeln nach radikaler Prostatektomie (RP) bei organbegrenztem Prostatakarzinom (PCa) ein PSA-Rezidiv. Mit der breiteren Verfügbarkeit des PSMA-PET/CTs hat sich die Salvage-Lymphadenektomie (sLND) bei in der Bildgebung nachgewiesenem Lymphknotenrezidiv[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
title: Immuntherapie im neuroendokrinen Prostatakarzinom? Erste Analyse des potenziell prediktiven Biomarkers PD-L1 im neuroendokrinen Prostatakarzinom
Creators: name: von Hardenberg, J.
name: Hartmann, S.
name: Nitschke, K.
name: Worst, T. S.
name: Ting, S.
name: Reis, H.
name: Nuhn, P.
name: Weis, C.-A.
name: Erben, P.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Das kleinzellige Bronchialkarzinom (SCLC) und das neuroendokrine Prostatakarzinom (NEPCA) teilen eine ähnliche Tumorbiologie. Obwohl Immuntherapien mit PD-L1 als potenziellem prediktiven Biomarker erfolgreich im SCLC getestet wurden, ist bisher wenig über den Immunstatus im NEPCA bekannt. [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
DETERMINANTS OF GROSS DOMESTIC SAVING: AN EMPIRICAL EVIDENCE FROM EAST AFRICA
Creators: name: Woldemariam G/Michael
Publisher: name: Zenodo
Year: 2016

description: The objective of this paper was to investigate the determinants of gross domestic saving in the Ethiopia, Kenya, Mozambique, Rwanda, Tanzania, and Uganda using annual panel datasets form 1991-2012.In this study, effort has been made to identify the fundamental determinants of domestic saving in the region of East Africa using the Fixed Effects (FE) model. Estimated results revealed that GDP per capita growth (gdpp) and degree of urbanization (urb) are the only significant determinants of gross domestic saving in the region. However, inflation rate, working age group as a percentage of total population (py), age dependency ratio to working age (agedp), money and quasi money as a percentage of GDP (m2), and government expenditure as a percentage of GDP (ggov) are found to be not statistically significant at the conventional levels. It seems fairly imperative to suggest that governments should give amplified concern for GDP per capita growth and degree of urbanization more than other candidates if they are in a position to design policies for the sake of boosting up domestic savings. On the other hand, this in turn, may be boosting up sustainable economic growth through encouraging investment over the region of interest.
Long-Range Plasmon Assisted Energy Transfer Between Fluorescent Emitters
Creators: name: Bouchet, D.
name: Cao, D.
name: Carminati, R.
name: De Wilde, Y.
name: Krachmalnicoff, V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate plasmon assisted energy transfer between fluorophores located at distances up to $7 \, μ$m on the top of a thin silver film. Thanks to the strong confinement and large propagation length of surface plasmon polaritons, the range of the energy transfer is almost two orders of magnitude larger than the values reported in the literature so far. The parameters driving the energy transfer range are thoroughly characterized and are in very good agreement with theoretically expected values.
description: 5 pages, 4 figures, accepted for publication in Physical Review Letters
09 March 1856: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Underlying conservation and stability laws in nonlinear propagation of axicon-generated Bessel beams
Creators: name: Porras, Miguel A.
name: Ruiz-Jimenez, Carlos
name: Losada, Juan Carlos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In light filamentation induced by axicon-generated, powerful Bessel beams, the spatial propagation dynamics in the nonlinear medium determines the geometry of the filament channel and hence its potential applications. We show that the observed steady and unsteady Bessel beam propagation regimes can be understood in a unified way from the existence of an attractor and its stability properties. The attractor is identified as the nonlinear unbalanced Bessel beam (NL-UBB) whose inward Hänkel beam amplitude equals the amplitude of the linear Bessel beam that the axicon would generate in linear propagation. A simple analytical formula that determines de NL-UBB attractor is given. Steady or unsteady propagation depends on whether the attracting NL-UBB has a small, exponentially growing, unstable mode. In case of unsteady propagation, periodic, quasi-periodic or chaotic dynamics after the axicon reproduces similar dynamics after the development of the small unstable mode into the large perturbation regime.
description: 9 pages, 7 figures
Thermal conductivity of quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O7
Creators: name: Tokiwa, Y.
name: Yamashita, T.
name: Udagawa, M.
name: Kittaka, S.
name: Sakakibara, T.
name: Terazawa, D.
name: Shimoyama, Y.
name: Terashima, T.
name: Yasui, Y.
name: Shibauchi, T.
name: Matsuda, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report low-temperature thermal conductivity $κ$ of pyrochlore Yb$_2$Ti$_2$O$_7$, which contains frustrated spin-ice correlations with significant quantum fluctuations. In the disordered spin-liquid regime, $κ(H)$ exhibits a nonmonotonic magnetic field dependence, which is well explained by the strong spin-phonon scattering and quantum monopole excitations. We show that the excitation energy of quantum monopoles is strongly suppressed from that of dispersionless classical monopoles. Moreover, in stark contrast to the diffusive classical monopoles, the quantum monopoles have a very long mean free path. We infer that the quantum monopole is a novel heavy particle, presumably boson, which is highly mobile in a three-dimensional spin liquid.
description: 8 pages, 9 figures
01 January 1849: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Employer Power and Employment in Developing Countries
Creators: name: Chau, Nancy H.
name: Kanbur, Ravi
name: Soundararajan, Vidhya
name: Chau, Nancy H.
name: Kanbur, Ravi
name: Soundararajan, Vidhya
Publisher: name: Unknown
Year: 2022
Subjects: subject: Teaching/Communication/Extension/Profession
subject: employer power
subject: employment
subject: developing countries

description: The issue of employer power is underemphasized in the development literature. Thedefault model is usually one of competitive labor markets. This assumption matters for analysis and policy prescription. There is growing evidence that the competitive labor markets assumption is not valid for developing countries. Our objective in this paper is to review this evidence, to present theoretical and policy perspectives which follow from it, and to highlight areas for further research.
F(R) gravity and inflation
Creators: name: Sebastiani, Lorenzo
name: Myrzakulov, Ratbay
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this short review, we revisit inflation in F(R)-gravity. We find several F(R)-models for viable inflation by applying some reconstruction techniques. A special attention is payed in the reproduction of the last Planck satellite data. The possible generalizations of Starobinsky- like inflation are found and discussed. The early-time acceleration is analyzed in a higher- derivative quantum gravitational model which mainly reduces to F(R)-gravity.
description: 19 pages, minor correction
Propeller effect in action in the ultraluminous accreting magnetar M82 X-2
Creators: name: Tsygankov, Sergey S.
name: Mushtukov, Alexander A.
name: Suleimanov, Valery F.
name: Poutanen, Juri
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present here the first convincing observational manifestation of a magnetar-like magnetic field in an accreting neutron star in binary system - the first pulsating ultra-luminous X-ray source X-2 in the galaxy M82. Using the Chandra X-ray observatory data we show that the source exhibit the bimodal distribution of the luminosity with two well-defined peaks separated by a factor of 40. This behaviour can be interpreted as the action of the "propeller regime" of accretion. The onset of the propeller in a 1.37 s pulsar at luminosity of ~$10^{40}$ erg/s implies the dipole component of the neutron star magnetic field of ~$10^{14}$ G.
description: 6 pages, 3 figures, 1 table, accepted by MNRAS
Analysis of Off-farm Engagements and Implications for Economic Transformation: Empirical Evidence from Libo Kemkem Woreda
Creators: name: Workineh Asmare
Publisher: name: Zenodo
Year: 2013

description: Off-farm engagements and earnings from such employment opportunities have become increasingly important in rural Ethiopia as the nation is striving to end poverty through a steadily growing rural income. There is an expressed policy effort to materialize a more stable and growing farm income. However, there is a paucity of policy attention to the off-farm economy notwithstanding its huge potential in diversifying rural income, reducing unemployment and transforming the rural economy. This study analyses offfarm engagements by farm households to drive important implications for policy as farm households’ behavioural choice matters for the desired/undergoing economic transformation. Specifically, we estimate farm households’ propensity to and the intensity of off-farm engagements using binary choice and censored regression models, respectively. We use a survey data of 200 farm households in Libo Kemkem Woreda, Amhara Region. Farm households’ socio-political capital, risk behaviour, financial conditions, characteristics of their farm and local labour market conditions are found to be significant predictors of the choice to off-farm engagements
25 September 1848: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Directional out-coupling of light from a plasmonic nanowire-nanoparticle junction
Creators: name: Singh, Danveer
name: Dasgupta, Arindam
name: G., Aswathy V.
name: Tripathi, Ravi
name: Kumar, G. V. Pavan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally show how a single Ag nanoparticle (NP) coupled to an Ag nanowire (NW) can convert propagating surface plasmon polaritons to directional photons. By employing dual-excitation Fourier microscopy with spatially filtered collection-optics, we show single- and dual-directional out-coupling of light from NW-NP junction for plasmons excited through glass-substrate and air-superstrate. Furthermore, we show NW-NP junction can influence the directionality of molecular-fluorescence emission, thus functioning as an optical antenna. The results discussed herein may have implications in realizing directional single-photon sources and quantum plasmon circuitry.
Aftershocks and Omori's law in a modified Carlson-Langer model with nonlinear visco-elasticity
Creators: name: Sakaguchi, Hidetsugu
name: Okamura, Kazuki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geophysics (physics.geo-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A modified Carlson-Langer model for earthquakes is proposed, which includes nonlinear visco-elasticity. Several aftershocks are generated after the main shock owing to the damping of the additional visco-elastic force. Both the Gutenberg-Richter law and Omori's law are reproduced in a numerical simulation of the modified Carlson-Langer model on a critical percolation cluster of a square lattice.
description: 8 pages, 7 figures
Optical images-based edge detection in Synthetic Aperture Radar images
Creators: name: Junior, Gilberto P. Silva
name: Frery, Alejandro C.
name: Sandri, Sandra
name: Bustince, Humberto
name: Barrenechea, Edurne
name: Marco-Detchart, Cédric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We address the issue of adapting optical images-based edge detection techniques for use in Polarimetric Synthetic Aperture Radar (PolSAR) imagery. We modify the gravitational edge detection technique (inspired by the Law of Universal Gravity) proposed by Lopez-Molina et al, using the non-standard neighbourhood configuration proposed by Fu et al, to reduce the speckle noise in polarimetric SAR imagery. We compare the modified and unmodified versions of the gravitational edge detection technique with the well-established one proposed by Canny, as well as with a recent multiscale fuzzy-based technique proposed by Lopez-Molina et Alejandro We also address the issues of aggregation of gray level images before and after edge detection and of filtering. All techniques addressed here are applied to a mosaic built using class distributions obtained from a real scene, as well as to the true PolSAR image; the mosaic results are assessed using Baddeley's Delta Metric. Our experiments show that modifying the gravitational edge detection technique with a non-standard neighbourhood configuration produces better results than the original technique, as well as the other techniques used for comparison. The experiments show that adapting edge detection methods from Computational Intelligence for use in PolSAR imagery is a new field worthy of exploration.
description: Accepted for publication in Knowledge-Based Systems
Fermionic current and Schwinger effect in de Sitter spacetime
Creators: name: Stahl, Clément
name: Strobel, Eckhard
name: Xue, She-Sheng
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the fermionic Schwinger effect in two dimensional de Sitter spacetime. To do so we first present a method to semiclassically compute the number of pairs created per momentum mode for general time dependent fields. In addition the constant electric field is studied in depth. In this case solutions for the Dirac equation can be found and the number of pairs can be computed using the standard Bogoliubov method. This result is shown to agree with the semiclassical one in the appropriate limit. The solutions are also used to compute the expectation value of the induced current. Comparing these results to similar studies for bosons we find that while the results agree in the semiclassical limit they do not generally. Especially there is no occurrence of a strong current for small electric fields.
description: 19 pages, 1 figure, V2:small changes and some references added, version accepted for publication in Phys. Rev. D
Investigating the Effectiveness of Head Start: Evidence From a Meta-Analysis and The Family Life Project
Creators: name: Carr, Robert C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Two empirical studies were undertaken to examine the effectiveness of the federal Head Start preschool program. The first study examined the effect of Head Start participation compared to public pre-kindergarten (pre-K) participation on children’s school readiness skills. A systematic review of the literature and meta-analysis were undertaken to consider this issue. A total of six studies met the inclusion criteria for the meta-analysis, and effects were considered across the school readiness domains of language, emergent literacy, mathematics, and social-behavioral skills. The meta-analysis found a negative effect of Head Start participation on children’s emergent literacy skills, which indicated a modest benefit of public pre-K participation compared to Head Start participation. Additionally, the meta-analysis found no reliable effect of Head Start participation compared to public pre-K participation on children’s language, mathematics, and social-behavioral skills.      The second study examined the effect of Head Start participation on children’s language, literacy, and mathematics skills in the spring of preschool and in the spring of kindergarten. This study also examined if kindergarten classroom quality sustained the effect of Head Start into the spring of kindergarten. To consider these issues, data were drawn from the Family Life Project (Vernon-Feagans, Cox, & The FLP Key Investigators, 2013), a population-based sample of children born in two historically low-wealth, rural regions of the US located east of the Mississippi: the region labeled as the “Black South” by demographers (Dill, 1999) and the Appalachian mountain region. Propensity score weighting was used to establish baseline comparability between the Head Start and comparison groups. Three domains of kindergarten classroom quality were assessed with the Classroom Assessment Scoring System (Pianta, La Paro, & Hamre, 2008), including Instructional Support, Emotional Support, and Classroom Organization. Head Start participants were found to outperform the comparison group in literacy in the spring of preschool by a small margin, but no reliable Head Start effect was found on language or mathematics skills. Evidence of moderation was found for children’s spring-of-kindergarten literacy skills such that Head Start participants continued to outperform the comparison group if they experienced higher-quality Emotional Support in kindergarten, but not average-quality or lower-quality Emotional Support.
A decomposition for Borel measures $μ\le \mathcal{H}^{s}$
Creators: name: Detaille, Antoine
name: Ponce, Augusto C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary: 28A78, Secondary: 28A12

description: We prove that every finite Borel measure $μ$ in $\mathbb{R}^N$ that is bounded from above by the Hausdorff measure $\mathcal{H}^s$ can be split in countable many parts $μ\lfloor_{E_k}$ that are bounded from above by the Hausdorff content $\mathcal{H}_\infty^s$. Such a result generalises a theorem due to R. Delaware that says that any Borel set with finite Hausdorff measure can be decomposed as a countable disjoint union of straight sets. We apply this decomposition to show the existence of solutions of a Dirichlet problem involving an exponential nonlinearity.
description: Added application to solution of semilinear PDE involving exponential
28 October 1855: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity
Creators: name: Haro, J.
name: Makarenko, A. N.
name: Myagky, A. N.
name: Odintsov, S. D.
name: Oikonomou, V. K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing holonomy corrections in modified $F(\mathcal{G})$ theories of gravity. Within the context of our formalism, we provide a perturbative expansion in the critical density, a parameter characteristic of Loop Quantum Gravity theories, and we result in having leading order corrections to the classical $F(\mathcal{G})$ theories of gravity. After extensively discussing the formalism, we present a reconstruction method that makes possible to find the Loop Quantum Cosmology corrected $F(\mathcal{G})$ theory that can realize various cosmological scenarios. Specifically, we studied exponential and power-law bouncing cosmologies, emphasizing on the behavior near the bouncing point and in some cases, the behavior for all the values of the cosmic time is obtained. We exemplify our theoretical constructions by using bouncing cosmologies, and we investigate which Loop Quantum Cosmology corrected Gauss-Bonnet modified gravities can successfully realize such cosmologies.
description: Revised version, to appear in PRD
title: Analyse und Einflussfaktoren der unmittelbaren Frühkontinenz nach Blasenkatheterentfernung bei Patienten nach radikaler Prostatektomie mit maximalem Erhalt der Harnröhrenlänge
Creators: name: Theissen, L.
name: Chun, F.
name: Roos, F.
name: Becker, A.
name: Preisser, F.
name: Wenzel, M.
name: Kluth, L.
name: Mandel, P.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Der Erhalt der maximalen Harnröhrenlänge (full functional length of the urethral sphincter (FFLU) sowie eine nerverhaltende Operation haben einen positiven Einfluss auf die mittel- und langfristige postoperativen Kontinenz nach radikaler Prostatektomie (RP). Informationen über[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
31 October 1849: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Efficient impurity-bath trial states from superposed Slater determinants
Creators: name: Snyman, Izak
name: Florens, Serge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The representation of ground states of fermionic quantum impurity problems as superpositions of Gaussian states has recently been given a rigorous mathematical foundation. [S. Bravyi and D. Gosset, Comm. Math. Phys. 356, 451 (2017)]. It is natural to ask how many parameters are required for an efficient variational scheme based on this representation. An upper bound is $\mathcal O(N^2)$, where $N$ is the system size, which corresponds to the number parameters needed to specify an arbitrary Gaussian state. We provide an alternative representation, with more favorable scaling, only requiring $\mathcal O(N)$ parameters, that we illustrate for the interacting resonant level model. We achieve the reduction by associating mean-field-like parent Hamiltonians with the individual terms in the superposition, using physical insight to retain only the most relevant channels in each parent Hamiltonian. We benchmark our variational ansatz against the Numerical Renormalization Group, and compare our results to existing variational schemes of a similar nature to ours. Apart from the ground state energy, we also study the spectrum of the correlation matrix -- a very stringent measure of accuracy. Our approach outperforms some existing schemes and remains quantitatively accurate in the numerically challenging near-critical regime.
description: Main text, 9 pages. Total length including appendices, 13 pages
Thermodynamic Relations for Kiselev and Dilaton Black Hole
Creators: name: Majeed, Bushra
name: Jamil, Mubasher
name: Pradhan, Parthapratim
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the thermodynamics and phase transition for Kiselev black hole and dilaton black hole. Specifically we consider Reissner Nordstrom black hole surrounded by radiation and dust, and Schwarzschild black hole surrounded by quintessence, as special cases of Kiselev solution. We have calculated the products relating the surface gravities, surface temperatures, Komar energies, areas, entropies, horizon radii and the irreducible masses at the Cauchy and the event horizons. It is observed that the product of surface gravities, surface temperature product and product of Komar energies at the horizons are not universal quantities for the Kiselev solutions while products of areas and entropies at both the horizons are independent of mass of the above mentioned black holes (except for Schwarzschild black hole surrounded by quintessence). For charged dilaton black hole, all the products vanish. First law of thermodynamics is also verified for Kiselev solutions. Heat capacities are calculated and phase transitions are observed, under certain conditions.
description: 21 pages, 4 figures. accepted for publication in Advances in High Energy Physics
06 August 1853: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.
Economic impact assessment of public incentives to support farm-to-school food purchases
Creators: name: Krasnoff, Shayna
name: Schmit, Todd M.
name: Bilinski, Cheryl B.
name: Krasnoff, Shayna
name: Schmit, Todd M.
name: Bilinski, Cheryl B.
Publisher: name: Unknown
Year: 2022
Subjects: subject: Teaching/Communication/Extension/Profession
subject: farm-to-school
subject: local foods
subject: economic impact
subject: food policy

description: Farm-to-school projects have been widely supported by policy makers with funding provided at both the federal and state levels. Still, many of the outcomes of this inflow of policy and funding remain unclear. In 2018, New York State (USA) announced the 30% NY Initiative that increases school lunch reimbursements by $0.191 per meal if districts purchase at least 30% of their ingredients from New York farms. With detailed school food purchasing data from the Buffalo City School District for both before and after the Initiative started, we analyze the gross and net economic impacts of the increased local spending on the state economy through a customized input-output model. Results show net positive economic impacts of the policy, even when a negative household impact is applied to account for the cost of the initiative to taxpayers. For every dollar in additional reimbursement offered through the Initiative, economic impacts to the state increase by $1.54. However, at least 65% of the increase in local spending must represent new sales to final demand to ensure a benefit cost ratio above unity.
title: Testosteronentzug im Stadium des hormonresistenten PCA vorgesetzt?
Creators: name: Pathak, G. R.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Das aktuelle Problem in der urologischen Praxis ist die weitere Therapie des PSA Rezidivs nach Testosteronentzugstherapie unter Erhaltung einer guten Lebensqualität. Es bestehen keine Langzeitstudien über eine sich bewährte Therapie dabei. Laut der Leitlinie bestehen die Möglichkeiten[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 60. Jahrestagung der Südwestdeutschen Gesellschaft für Urologie e.V.
The point-charge self-energy in Lee-Wick Theories
Creators: name: Barone, F. A.
name: Flores-Hidalgo, G.
name: Nogueira, A. A
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we study the ultraviolet and infrared behaviour of the self energy of a point-like charge in the vector and scalar Lee-Wick electrodynamics in a $d+1$ dimensional space time. It is shown that in the vector case, the self energy is strictly ultraviolet finite up to $d=3$ spatial dimensions, finite in the renormalized sense for any $d$ odd, infrared divergent for $d=2$ and ultraviolet divergent for $d>2$ even. On the other hand, in the scalar case, the self energy is striclty finite for $d\leq 3$, and finite, in the renormalized sense, for any $d$ odd.
description: 5 latex pages
Impacts of ISO14001 certification on profitability and society benefits (case study of ELICO, Addis Ababa, Ethiopia)
Creators: name: Mekides Shewangizaw
Publisher: name: Zenodo
Year: 2015

description: Many companies around the world are trying to maximize their benefit taking their surrounding environment in consideration. From different types of environmental management methods, ISO14001 certification is one of them. ISO14001 certification has not only environmental benefit, but it has also indirect financial benefit since it believed that environmental concerned companies have better market share than others. Considering this, the main focus of this research is investigating whether ISO14001 certification has impact on profitability or not taking ELICO as case study. To investigate this, both primary and secondary data were used. The source of primary data was self- administered questioner and secondary data was collected from ELICO, NBE and Addis Ababa tannery data records. In this research both econometrics OLS multiple regression analysis by applying DID impact assessment method using ELICO as treatment and Addis Ababa tannery as control group and descriptive statistics was used. The result of the investigation shows that ISO14001 EMS has positive impact on profitability and it is recommended to the certified companies to apply it in more effective way to have better environmental and financial benefits.
Large time zero temperature dynamics of the spherical p=2-spin glass model of finite size
Creators: name: Fyodorov, Yan V.
name: Perret, Anthony
name: Schehr, Gregory
Publisher: name: arXiv
Year: 2015
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We revisit the long time dynamics of the spherical fully connected $p = 2$-spin glass model when the number of spins $N$ is large but {\it finite}. At $T=0$ where the system is in a (trivial) spin-glass phase, and on long time scale $t \gtrsim {\cal O}{(N^{2/3})}$ we show that the behavior of physical observables, like the energy, correlation and response functions, is controlled by the density of near-extreme eigenvalues at the edge of the spectrum of the coupling matrix $J$, and are thus non self-averaging. We show that the late time decay of these observables, once averaged over the disorder, is controlled by new universal exponents which we compute exactly.
description: 18 pages, 3 figures. Published version
OAWeek2022: The OpenAIRE Research Graph Supporting Evidence-Based R&I indicators
Creators: name: Atzori, Claudio
name: Grypari, Ioanna
Publisher: name: Zenodo
Year: 2022
Subjects: Open science
Climate Justice
RDM
Open R&I Infrastructures

description: As per tradition, OpenAIRE will actively contribute to the International Open Access Week 2022 initiatives with interactive sessions and thought-provoking panel discussions connected to the theme of this year “Open for Climate Justice”. OpenAIRE have prepared two series of webinars that will showcase the different ways in which we can all work together and make Open Science a means to tackle the challenges ahead of us. This session is dedicated to - The OpenAIRE Research Graph: Supporting Evidence-Based R&I indicators, with a use case presentation from the project Intelcomp
 Speakers:
 - Claudio Atzori, CNR-IT
 - Ioanna Grypari, ARC Recordings also in Youtube - https://youtu.be/lZWkYBfpacM
17 December 1847: Villiers, Katharine (-1874) to Lewis, Theresa (1803-1865)
Creators: name: Orchard, Jack
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430201
subject: Archival, repository and related studies

description: A manuscript letter from the Bodleian Special Collections which has been transcribed, edited, and annotated by students participating in the Bodleian Student Editions workshop series, organised by Mike Webb, curator of Early Modern Manuscripts, and Miranda Lewis, Digital Editor of Early Modern Letters Online.