cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Individual differences in processes and strategies in analogical reasoning
Creators: name: Wilson, Nancy Louise
Publisher: name: University of British Columbia
Year: 2010

description: The need was presented for further research of the quantitative and qualitative nature of individual differences in achievement ability. The componential theory of analogical reasoning was used to identify differences in processes and strategies used to solve pictorial analogies by students of low, average, and high achievement ability. Subjects were 60 boys and girls from nine grade four classes in four schools in the Lower Mainland. One third of the group were high in achievement ability, one third were average, and one third were low. The criterion used to determine achievement ability was the Canadian Test of Basic Skills. The average age in the low group was 9 years, 9 months, in the average group 9 years, 8 months, and in the high group 9 years, 8 months. These subjects performed a series of forced-choice pictorial analogy tasks of the standard form A is to B as C is to D1 or D2. The analogies were presented in booklets. Each booklet contained 16 analogies, four per page. Subjects were given 64 seconds to work on each booklet. The booklets were administered over two sessions. Total time spent on an analogy booklet was decomposed into estimates of the time spent on each component (process) used in solution. Response times for number of items correct and number of items completed for each booklet were predicted from independent variables representing variations in the complexity of analogy items over the 24 booklets. Seven models were fitted to the 24 booklet scores at each ability level. The models differed in the components hypothesized to be used in solution and in the mode of component execution, exhaustive, or self-terminating. The model which best accounted for the variance in the data was designated as the preferred model. Multiple regression results suggested that there were qualitative differences in analogy solution for the three groups. The same model was preferred by the high and average groups, but a more exhaustive mode of execution was preferred in the low group. Significant quantitative group differences were found in a univariate analysis of variance which indicated that the high ability group had significantly shorter latencies correct than did the average and low groups. The average group had lower latencies correct than did the low group, but this difference was not significant. These results were subject to certain limitations in that there was evidence, especially in the low group, that the preferred models were not necessarily the complete models, and that additional factors such as nonlinear processing, speed, floor, and ceiling effects may have affected the results. Findings were discussed in terms of the above limitations and Sternberg's theory of analogical reasoning. Implications of these results for future research in individual differences were drawn.
An Adjoint Trajectory Model of the Perturbed Carbon Cycle
Creators: name: Gaeta, Dylan C.
Publisher: name: University of Chicago
Year: 2018
Subjects: subject: carbon cycle
subject: carbonate chemistry
subject: inverse modeling
subject: carbon dioxide

description: Here we present a new model framework for an adjoint trajectory model of the carbon cycle, which can be used to constrain carbon dioxide emission rates over a specific time interval given only a path constraint on the fraction of carbon dioxide that remains airborne over that interval. Earth’s ocean and terrestrial biosphere act to quickly remove a large and variable portion of carbon dioxide emissions from the atmosphere, and thus measuring the atmospheric carbon dioxide concentra- tion at any given time provides limited insight into the global emission flux that is responsible for driving the time-dependent behavior of the atmospheric con- centration. Using the adjoint trajectory model presented here, we can, without having any information about the emission schedule, invoke the use of mathe- matical inverse methods to computationally search for an emission scenario that best reproduces a time series constraint of observed (or desired) atmospheric CO2 concentrations. This adjoint trajectory model utilizes a simple yet powerful 3-box transfer model to partition CO2 emissions between the atmosphere and ocean over time. The transfer functions that govern this 3-box model are also utilized to pro- vide a physical constraint on the acceptable set of emission scenario solutions. This thesis describes the governing mathematical framework of the adjoint trajectory model and provides a general algorithm for determining the unknown emission scenario that optimally reproduces the observed (or desired) atmospheric carbon dioxide trend. We show an example of the model performance in its current stage of development, and discuss its limitations and key areas for future development.
Editorial 03/2012: Medienbildung im Kontext der "PädagogInnenbildung NEU"
Creators: name: Barberi, Alessandro
name: Berger, Christian
Publisher: name: Medienimpulse
Year: 2012

description: Der Einsatz von Medien als Lehrmittel – aber vor allem als Informations- und Kommunikationsinstrument – erfordert, so wie das suchende Lernen in vernetzten auf Hypertext basierenden virtuellen Räumen, eine multimediale Schreib- und Lesekompetenz, die nicht auf lineare Schrifttexte begrenzt ist. Die Förderung der Medienkompetenz der Lehrenden sowohl in der Hochschule als auch in der Schule ist daher eine der wichtigen Aufgaben des Bildungssystems in unserer heutigen Wissens-, Informations- und Mediengesellschaft. Diese Konstellation wirkt sich direkt auf die Frage nach der Zukunft von Medienbildung und Medienpädagogik aus, weshalb sich die Redaktion der MEDIENIMPULSE entschlossen hat, dem Thema PädagogInnenbildung NEU ihre Schwerpunktausgabe 3/2012 zu widmen.
description: Medienimpulse, Bd. 50 Nr. 3 (2012): 3/2012 - PädagogInnenbildung Neu
Two-photon interferences of weak coherent lights
Creators: name: Kim, Heonoh
name: Kwon, Osung
name: Moon, Han Seb
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Multiphoton interference is an important phenomenon in modern quantum mechanics and experimental quantum optics, and it is fundamental for the development of quantum information science and technologies. Over the last three decades, several theoretical and experimental studies have been performed to understand the essential principles underlying such interference and to explore potential applications. Recently, the two-photon interference (TPI) of phase-randomized weak coherent states has played a key role in the realization of long-distance quantum communication based on the use of classical light sources. In this context, we investigated TPI experiments with weak coherent pulses at the single-photon level and quantitatively analyzed the results in terms of the single- and coincidence-counting rates and one- and two-photon interference-fringe shapes. We experimentally examined the Hong-Ou-Mandel-type TPI of phase-randomized weak coherent pulses to compare the TPI effect with that of correlated photons. Further experiments were also performed with two temporally- and spatially separated weak coherent pulses. Although the observed interference results, including the results of visibility and fringe shape, can be suitably explained by classical intensity correlation, the physics underlying the TPI effect needs to be interpreted as the interference between the two-photon states at the single-photon level within the utilized interferometer. The results of this study can provide a more comprehensive understanding of the TPI of coherent light at the single-photon level.
description: 18 pages, 10 figures
低氧与脑发育
Creators: name: 李晓玉(Xiaoyu Li)
Publisher: name: CNGB
Year: 2022
Subjects: Raw sequence reads
Epigenomics
Transcriptome or Gene expression
Other
Danio Rerio
Model organism

description: 本研究通过模式动物斑马鱼，描述低氧状态下斑马鱼脑组织转录组表观修饰(m1A, m6A, m5C和m7G)的分布和变化情况
Improving Point and Interval Estimates of Monotone Functions by Rearrangement
Creators: name: Chernozhukov, Victor
name: Fernandez-Val, Ivan
name: Galichon, Alfred
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: Econometrics (econ.EM)
subject: Functional Analysis (math.FA)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Suppose that a target function is monotonic, namely, weakly increasing, and an available original estimate of this target function is not weakly increasing. Rearrangements, univariate and multivariate, transform the original estimate to a monotonic estimate that always lies closer in common metrics to the target function. Furthermore, suppose an original simultaneous confidence interval, which covers the target function with probability at least $1-α$, is defined by an upper and lower end-point functions that are not weakly increasing. Then the rearranged confidence interval, defined by the rearranged upper and lower end-point functions, is shorter in length in common norms than the original interval and also covers the target function with probability at least $1-α$. We demonstrate the utility of the improved point and interval estimates with an age-height growth chart example.
description: 24 pages, 4 figures, 3 tables
"De soin afoch Deitsch lerna" - zur DaZ-Alphabetisierung von Zugewanderten in Österreich
Creators: name: Bartsch, Tamara
Year: 2019

description: Die vorliegende Diplomarbeit beschäftigt sich mit der Alphabetisierung in der Zweitsprache Deutsch von Migrantinnen und Migranten in Österreich. Ziel der Arbeit ist es einerseits einen Überblick über die bisherigen (politischen) Initiativen und Bemühungen zu geben, die die aktuelle Alphabetisierungsarbeit ermöglichen. Andererseits liegt der Fokus auf der heterogenen Zielgruppe von Alphabetisierungsangeboten für Migrantinnen und Migranten in Österreich. Diese wurde mittels verschiedener Ansätze zur Binnendifferenzierung durch Kategorien wie beispielsweise Alter, Herkunft, Bildungshintergrund, Lernerfahrung und Erstsprache unterschieden. Hauptaugenmerk liegt jedoch auf der Alphabetisierung in der Erstsprache bzw. dessen Schriftsystem. Anhand einer Vorstellung der verschiedenen Schriftsysteme der Zugewanderten mit DaZ-Alphabetisierungsbedarf in Österreich und einer kontrastiven Darstellung dieser zum deutschen Schriftsystem werden für die jeweiligen Zielgruppen spezielle Bedarfe, Vorteile und Schwierigkeiten in der DaZ-Alphabetisierung erörtert. Die durch die Literaturrecherche erhobenen Erkenntnisse können als Grundlage weiterer, empirischer Forschung in quantitativen oder qualitativen Rahmen dienen.
Contribution of stripped nuclei to the ultracompact dwarf galaxy population in the Virgo Cluster
Creators: name: Mayes, Rebecca J.
name: Drinkwater, Michael. J.
name: Pfeffer, Joel
name: Baumgardt, Holger
name: Liu, Chengze
name: Ferrarese, Laura
name: Côté, Patrick
name: Peng, Eric W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the hydrodynamical EAGLE simulation to predict the numbers, masses and radial distributions of tidally stripped galaxy nuclei in massive galaxy clusters, and compare these results to observations of ultra-compact dwarf galaxies (UCDs) in the Virgo cluster. We trace the merger trees of galaxies in massive galaxy clusters back in time and determine the numbers and masses of stripped nuclei from galaxies disrupted in mergers. The spatial distribution of stripped nuclei in the simulations is consistent with those of UCDs surrounding massive galaxies in the Virgo cluster. Additionally, the numbers of stripped nuclei are consistent with the numbers of M > $10^{7}~M_{\odot}$ UCDs around individual galaxies and in the Virgo cluster as a whole. The mass distributions in this mass range are also consistent. We find that the numbers of stripped nuclei surrounding individual galaxies correlates better with the stellar or halo mass of individual galaxies than the total cluster mass. We conclude that most high mass (M > $10^{7}~M_{\odot}$ UCDs are likely stripped nuclei. It is difficult to draw reliable conclusions about low mass (M < $10^{7}~M_{\odot}$ UCDs because of observational selection effects. We additionally predict that a few hundred stripped nuclei below a mass of $2~\times~10^{6}~M_{\odot}$ should exist in massive galaxies that will overlap in mass with the globular cluster population. Approximately 1-3 stripped nuclei in the process of forming also exist per massive galaxy.
description: 17 pages, 16 figures, Published in MNRAS
Die visuelle Repräsentation des Konzentrationslagers Mauthausen im österreichischen Schulbuch
Creators: name: Blaschitz, Edith
Publisher: name: Medienimpulse
Year: 2014

description: Die Frage nach der Repräsentation von KZ-Fotos in Schulbüchern stößt in ein sehr komplexes Geflecht von Ansprüchen und Bedeutungen, die ihrerseits einem bemerkenswerten geschichtspolitischen Wandel unterliegen. Edith Blaschitz analysiert in ihrem Beitrag die Funktion von visuellen Quellen in den Repräsentation(en) des Konzentrationslager Mauthausen indem sie u. a. den Problemkreis der „Vergegenwärtigung“ und Repräsentation der Shoah umkreist und dabei ein Authentizitätsdilemma ausmacht. Auch betont sie, dass die Bilder zur Shoah im österreichischen Schulbuch einer Verknappung unterliegen und sich die Bilderwelt zur Shoah mehr und mehr zurückzieht. Menschen verschwinden und werden durch Erinnerungsobjekte ersetzt.
description: Medienimpulse, Bd. 50 Nr. 1 (2012): 1/2012 - Repräsentation(en) der Shoah
Migrationsgesellschaftliche Geschichtsbeziehungen zum Nationalsozialismus
Creators: name: Messerschmidt, Astrid
Publisher: name: Medienimpulse
Year: 2014

description: This contribution sketches societal conditions for an up-to-date work of remembrance in the context of our current experience in migration societies, and analyses self-images of migration society in the sense of a construction of an ‘us’ as well as phenomena of secondary antisemitism. Also, the memorial practices within a European remembrance of the history of National Socialism are examined within this context. Memorial practices in migration societies are understood as multi-perspective constructs of relational history. The author argues from her own West German context; similarities and differences to the Austrian situation remain to be discussed.
description: Medienimpulse, Bd. 50 Nr. 1 (2012): 1/2012 - Repräsentation(en) der Shoah
Towards a Theory of Entropy Production in the Little and Big Bang
Creators: name: Kunihiro, Teiji
name: Muller, Berndt
name: Ohnishi, Akira
name: Schafer, Andreas
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a broadly applicable formalism for the description of coarse grained entropy production in quantum mechanical processes. Our formalism is based on the Husimi transform of the quantum state, which encodes the notion that information about any quantum state is limited by the experimental resolution. We show in two analytically tractable cases (the decay of an unstable vacuum state and reheating after cosmic inflation) that the growth rate of the Wehrl entropy associated with the Husimi function approaches the classical Kolmogorov-Sinai entropy. We also discuss various possible applications of our formalism, including the production of entropy in the early stages of a relativistic heavy ion collision.
description: 21 pages, 6 figures. One section is added in v2
Current Correlators for General Gauge Mediation
Creators: name: Ooguri, Hirosi
name: Ookouchi, Yutaka
name: Park, Chang-Soon
name: Song, Jaewon
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the gauge mediation mechanism, the effects of the hidden sector are characterized by a set of correlation functions of the global symmetry current of the hidden sector. We present methods to compute these correlators in cases with strongly coupled hidden sectors. Several examples are presented to demonstrate the technique explicitly.
description: 20 pages, 1 figure
Community Medien: Orte der Partizipation, politischen Bildung und Medienkompetenzförderung
Creators: name: Trültzsch-Wijnen, Christine
Publisher: name: Medienimpulse
Year: 2012

description: Medienimpulse, Bd. 50 Nr. 1 (2012): 1/2012 - Repräsentation(en) der Shoah
Splitting the Wino Multiplet by Higher-Dimensional Operators in Anomaly Mediation
Creators: name: Berkooz, Micha
name: Hochberg, Yonit
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a class of AMSB models, the splitting in the Wino multiplet turns out to be very small, such as the often-quoted 170 MeV in minimal AMSB, which originates from MSSM loops. Such a small mass gap is potentially a window into higher scale physics, as it may be sensitive to higher-dimensional operators. We show that still within AMSB one can get a much larger splitting in the Wino multiplet--a few GeV--if the scale of the new physics is comparable to the gravitino mass (which is indeed often the scale of new physics in anomaly mediation).
description: 18 pages; v2: references added, matching journal version
title: Καταλυτική αεριοποίηση αγροτικών και δασικών αποβλήτων για παραγωγή αερίου καυσίμου εμπλουτισμένου σε υδρογόνο. Ελαχιστοποίηση εκπομπών διοξειδίου του άνθρακα μέσω ρόφησης από δομικά υλικά κατεδάφισης
title: Catalytic gasification of agricultural and forest wastes for production of fuel gas enriched in hydrogen. Minimization of carbon dioxide emissions via absorption by building demolition waste materials.
Creators: name: Ορφανουδακη Αγαπη
Publisher: name: Technical University of Crete
Year: 2023

description: Στην παρούσα εργασία, εξετάζεται η δυνατότητα παραγωγής αερίου καυσίμου εμπλουτισμένου σε υδρογόνο από αγροτικά και δασικά απόβλητα, με την ταυτόχρονη ελαχιστοποίηση των εκπομπών του διοξειδίου του άνθρακα, μέσω της χρήσης προσροφητικών υλικών και πιο συγκεκριμένα δομικών υλικών κατεδάφισης. Πιο αναλυτικά, πραγματοποιήθηκε η διεργασία της αεριοποίησης με ατμό έως τους 750°C σε δείγματα ηλίανθου και ακακίας, έτσι ώστε να αξιολογηθούν οι αποδόσεις τους, καθώς και η σύσταση του παραγόμενου αερίου, παρουσία συγκεκριμένων καταλυτών. Οι καταλύτες που χρησιμοποιήθηκαν ήταν η ερυθρά ιλύς και το οξείδιο του δημητρίου (CeO2). Επιπρόσθετα, μελετήθηκε η επίδραση των δομικών υλικών κατεδάφισης για διαφορετικούς λόγους Ca/C (1 και 2), αλλά και των καταλυτών σε διαφορετικά ποσοστά (10, 20 και 30% του CaO). Τα πειράματα αεριοποίησης διεξήχθησαν μέσω του συστήματος αντιδραστήρα σταθερής κλίνης καθώς και μέσω του συστήματος θερμοζυγού-φασματογράφου μάζας (TG-MS). Από την πειραματική διαδικασία προέκυψε ότι για λόγο Ca/C=1 και θερμοκρασία αεριοποίησης 750°C, η χρήση των δομικών υλικών κατεδάφισης και για τα δύο δείγματα, αύξησε το ποσοστό του υδρογόνου κατά 38%. Το ποσοστό του υδρογόνου στο αέριο προϊον σε αυτήν την περίπτωση έφτασε έως 54.9% για τον ηλίανθο και έως 59.3% για την ακακία, με ποσοστά προσρόφησης διοξειδίου 87.3% και 76.1%, αντίστοιχα. Καταλληλότερος καταλύτης για τον ηλίανθο θεωρήθηκε η ερυθρά ιλύς σε ποσοστό 20% κ.β. του CaO με μέγιστο ποσοστό σε υδρογόνο στο αέριο μείγμα 77.1%, απόδοση σε H2 6.3 m³/kg, ανώτερη θερμογόνο δύναμη αερίου 12.4 kg/m³ και ποσοστό προσρόφησης του διοξειδίου του άνθρακα 81.8%. Για την ακακία καταλληλότερος καταλύτης θεωρήθηκε το CeO2 σε ποσοστό 20% κ.β. του CaO, με μέγιστο ποσοστό σε υδρογόνο στο αέριο μείγμα 73.0%, απόδοση σε H2 5.5 m³/kg, ανώτερη θερμογόνο δύναμη αερίου 11.4 Kg/m³ και ποσοστό προσρόφησης του διοξειδίου του άνθρακα 77.4%.
Survivors Of Nipah Virus Attack In Kerala: An Interpretative Phenomenological Analysis
Creators: name: Prabhakar, Akhila
name: , G.Ragesh
name: K.P, Abdul Salam
name: Chandni.R
Publisher: name: Zenodo
Year: 2022
Subjects: phenomenology, Nipah virus, trauma, pandemic

description: Introduction: The first Nipah outbreak was reported in the Kozhikode district of
 Kerala, India in 2018 May. Twenty-one deaths were recorded among a total of 23
 cases. Those who have died were mainly from the districts of Kozhikode and
 Malappuram districts. Two of the infected were survived. By the end of May 2019
 a young student was confirmed with Nipah in Ernakulam district of Kerala and
 recovered after 2 months of treatment. No significant casualties related to Nipah
 have been in the second outbreak till now and the infection seems contained due
 to the early identification and caution by the health department of the Kerala Government.
 Methods: The present study focuses on first-hand experiences of survivors of
 Nipah virus attack happened in 2018 and 2019, in state of Kerala. The qualitative
 study uses the method of Interpretative Phenomenological Analysis (IPA). Sample
 of three subjects (All Nipah survivors) was collected using Purposive Sampling
 Method. Data collected by semi structured interviews through phone calls.
 Result: The major themes that emerged from the study were; The dimension of distance,
 Minimization and denial, Being a patient, Fantasies and emotional reasoning,
 Search for a secure base and the Profound nature of the experience.
 Conclusion: This present study focuses on the experiences of Survivors of Kerala
 Nipah virus attack identified six superordinate themes; The dimension of distance,
 Minimization and denial, Fantasies and emotional reasoning, Search for a secure
 base, Being a patient and Profound nature of the experience. This study indicates
 Psychosocial interventions for patients and their family members for during and
 after the hospitalization.
Bregman Proximal Linearized ADMM for Minimizing Separable Sums Coupled by a Difference of Functions
Creators: name: Pham, Tan Nhat
name: Dao, Minh N.
name: Eberhard, Andrew
name: Sultanova, Nargiz
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C26, 49M27, 65K05

description: In this paper, we develop a splitting algorithm incorporating Bregman distances to solve a broad class of linearly constrained composite optimization problems, whose objective function is the separable sum of possibly nonconvex nonsmooth functions and a smooth function, coupled by a difference of functions. This structure encapsulates numerous significant nonconvex and nonsmooth optimization problems in the current literature including the linearly constrained difference-of-convex problems. Relying on the successive linearization and alternating direction method of multipliers (ADMM), the proposed algorithm exhibits the global subsequential convergence to a stationary point of the underlying problem. We also establish the convergence of the full sequence generated by our algorithm under the Kurdyka--Lojasiewicz property and some mild assumptions. The efficiency of the proposed algorithm is tested on a robust principal component analysis problem and a nonconvex optimal power flow problem.
Non-Hermitian Dirac theory from Lindbladian dynamics
Creators: name: Gomes, Y. M. P.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This study investigates the intricate relationship between dissipative processes of open quantum systems and the non-Hermitian quantum field theory of relativistic fermionic systems. By examining the influence of dissipative effects on Dirac fermions via Lindblad formalism, we elucidate the effects of coupling relativistic Dirac particles with the environment and show the lack of manifest Lorentz invariance. Employing rigorous theoretical analysis, we generalize the collisionless Boltzmann equations for the relativistic dissipation-driven fermionic system and find the Lyapunov equation, which governs the stationary solutions. Using our formalism, one presents a simple non-Hermitian model that the relativistic fermionic particles and anti-particles are stable. Going further, using the solution to the Lyapunov equations, one analyses the effect of dissipation on the stationary charge imbalance of this non-Hermitian model and finds that the dissipation can induce a new kind of charge imbalance compared with the collisionless equilibrium case.
description: Replaced with version matching the published one in the EPJC
Skew-adjoint maps and quadratic Lie algebras
Creators: name: Benito, Pilar
name: Rández-Ibáñez, Javier
name: Roldán-López, Jorge
Publisher: name: arXiv
Year: 2024
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17A45, 17B05, 17B40, 15A21

description: The procedure of double extension of vector spaces endowed with non-degenerate bilinear forms allows us to introduce the class of generalized $\mbK$-oscillator algebras over any arbitrary field $\mbK$. Starting from basic structural properties of such algebras and the canonical forms of skew-adjoint endomorphisms, we will proceed to classify the subclass of quadratic nilpotent algebras and characterize those algebras in the class with quadratic dimension 2. This will enable us to recover the well-known classification of real oscillator algebras, also known as Lorentzian algebras, given by Alberto Medina in 1985.
description: 24 pages
Many-Body Non-Hermitian Skin Effect for Multipoles
Creators: name: Gliozzi, Jacopo
name: De Tomasi, Giuseppe
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we investigate the fate of the non-Hermitian skin effect in one-dimensional systems that conserve the dipole moment and higher moments of an associated global $\text{U}(1)$ charge. Motivated by field theoretical arguments and lattice model calculations, we demonstrate that the key feature of the non-Hermitian skin effect for $m$-pole conserving systems is the generation of an $(m+1)$th multipole moment. For example, in contrast to the conventional skin effect where charges are anomalously localized at one boundary, the dipole-conserving skin effect results in charges localized at both boundaries, in a configuration that generates an extremal quadrupole moment. In addition, we explore the dynamical consequences of the $m$-pole skin effect, focusing on charge and entanglement propagation. Both numerically and analytically, we provide evidence that long-time steady-states have Fock-space localization and an area-law scaling of entanglement entropy, which serve as quantum indicators of the skin effect.
description: 5+2 pages, 3+4 figures
Cortazar, Derrida and Rayuela as a parable-parody of writing
Creators: name: Jaeck, Lois Marie
Publisher: name: University of British Columbia
Year: 2010

description: "Cortazar, Derrida and Rayuela as a Parable-Parody of Writing" interprets the novel "Rayuela" as a metaphorical representation of the forces which engender the movement of signification in writing. As Julio Cortazar is not a philosopher hut a novelist, I have utilized some of Jacques Derrida's theories concerning the origin, force and movement of signification of writing (as outlined in "De la Grammatologie", "L'Ecriture et la Differance" and "La Differance") in order to clarify the thesis that "Rayuela" is a metaphorical delineation of a philosophy of writing. The Introduction to the thesis explains how the hopscotch chart, whose graphic design serves as a pattern for "Rayuela's" structure, movement and plot, embraces the same counterpository tension between the outside and the inside, the physical and the metaphysical which writing entails. Chapter one analyzes changes in "Rayuela's" structure, character relationships and milieus as parallelisms of the changing perception of the sign of writing, as writing progressed from being understood within the logocentricism of the metaphysics of presence, to being comprehended as a non-centered totality whose movement of signification is one of infinite reflection on itself. Chapter two interprets "Rayuela" as a parable-parody of the rupture of writing with the concept of a center and the consequent opening of the freeplay of the text, which assumes the form of a movement of supplementarity as a result of the need to supplant the lack of a center. Chapter three examines the possibility of the exit of sense from writing, comparing Derrida's postulates on the above subject with those of Cortazar expressed directly through Moreilli, or inferred by the ultimate outcome of Oliveira's futile attempt to reach a metaphysical center beyond language. The Conclusion of the thesis synthesizes the concepts explained in chapters one, two and three by interpreting the string labyrinth which Oliveira constructs in the mental asylum as a symbolic model of the accomplistic-antagonistic relationship of writing to speech or a full presence, which is responsible for engendering the labyrinth of significations which the book or writing sketches as the novel unfolds itself. The Conclusion posits Rayuela as the incarnation of differences within which sense realizes itself as an inexpressible differing from itself.
re3dragon: A REsearch REgistry REsource for Data Dragons
Creators: name: Thiery, Florian
name: Mees, Allard
Publisher: name: Zenodo
Year: 2021
Subjects: Linked Open Data
Wikidata
Authority Files
Thesauri

description: The re3dragon (REsearch REsource REgistry for DataDragons) FLOSS tool envisages two aims: 1st: publication of an archaeology related open extendable LOD resource catalogue including authority data, thesauri, gazetteers, (space-) time gazetteers as well as typologies and domain specific resources. 2nd: re3dragon offers an API for requesting distributed LOD resources, returning resources in a standardised JSON format based on JSKOS. The re3dragon is coded in JAVA and Open Source published on GitHub.
Defects and D-Brane Monodromies
Creators: name: Brunner, Ilka
name: Jockers, Hans
name: Roggenkamp, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper D-brane monodromies are studied from a world-sheet point of view. More precisely, defect lines are used to describe the parallel transport of D-branes along deformations of the underlying bulk conformal field theories. This method is used to derive B-brane monodromies in Kahler moduli spaces of non-linear sigma models on projective hypersurfaces. The corresponding defects are constructed at Landau-Ginzburg points in these moduli spaces where matrix factorisation techniques can be used. Transporting them to the large volume phase by means of the gauged linear sigma model we find that their action on B-branes at large volume can be described by certain Fourier-Mukai transformations which are known from target space geometric considerations to represent the corresponding monodromies.
description: 49 pages, 5 figures
Information propagation through quantum chains with fluctuating disorder
Creators: name: Burrell, Christian K.
name: Eisert, Jens
name: Osborne, Tobias J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the propagation of information through one-dimensional quantum chains in fluctuating external fields. We find that information propagation is suppressed, but in a quite different way compared to the situation with static disorder. We study two settings: (i) a general model where an unobservable fluctuating field acts as a source of decoherence; (ii) the XX model with both observable and unobservable fluctuating fields. In the first setting we establish a noise threshold below which information can propagate ballistically and above which information is localised. In the second setting we find localisation for all levels of unobservable noise, whilst an observable field can yield diffusive propagation of information.
description: 5 pages, 2 figures
Linear Time Algorithms for Finding a Dominating Set of Fixed Size in Degenerated Graphs
Creators: name: Alon, Noga
name: Gutner, Shai
Publisher: name: arXiv
Year: 2008
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: There is substantial literature dealing with fixed parameter algorithms for the dominating set problem on various families of graphs. In this paper, we give a $k^{O(dk)} n$ time algorithm for finding a dominating set of size at most $k$ in a $d$-degenerated graph with $n$ vertices. This proves that the dominating set problem is fixed-parameter tractable for degenerated graphs. For graphs that do not contain $K_h$ as a topological minor, we give an improved algorithm for the problem with running time $(O(h))^{hk} n$. For graphs which are $K_h$-minor-free, the running time is further reduced to $(O(\log h))^{hk/2} n$. Fixed-parameter tractable algorithms that are linear in the number of vertices of the graph were previously known only for planar graphs. For the families of graphs discussed above, the problem of finding an induced cycle of a given length is also addressed. For every fixed $H$ and $k$, we show that if an $H$-minor-free graph $G$ with $n$ vertices contains an induced cycle of size $k$, then such a cycle can be found in O(n) expected time as well as in $O(n \log n)$ worst-case time. Some results are stated concerning the (im)possibility of establishing linear time algorithms for the more general family of degenerated graphs.
Multispectral Stereo-Image Fusion for 3D Hyperspectral Scene Reconstruction
Creators: name: Wisotzky, Eric L.
name: Triller, Jost
name: Hilsmann, Anna
name: Eisert, Peter
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Spectral imaging enables the analysis of optical material properties that are invisible to the human eye. Different spectral capturing setups, e.g., based on filter-wheel, push-broom, line-scanning, or mosaic cameras, have been introduced in the last years to support a wide range of applications in agriculture, medicine, and industrial surveillance. However, these systems often suffer from different disadvantages, such as lack of real-time capability, limited spectral coverage or low spatial resolution. To address these drawbacks, we present a novel approach combining two calibrated multispectral real-time capable snapshot cameras, covering different spectral ranges, into a stereo-system. Therefore, a hyperspectral data-cube can be continuously captured. The combined use of different multispectral snapshot cameras enables both 3D reconstruction and spectral analysis. Both captured images are demosaicked avoiding spatial resolution loss. We fuse the spectral data from one camera into the other to receive a spatially and spectrally high resolution video stream. Experiments demonstrate the feasibility of this approach and the system is investigated with regard to its applicability for surgical assistance monitoring.
description: VISAPP 2024 - 19th International Conference on Computer Vision Theory and Applications
Universal doping dependence of the ground state staggered magnetization in cuprates
Creators: name: Ofer, Rinat
name: Keren, Amit
name: Chmaissem, Omar
name: Amato, Alex
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using muon spin rotation we determine the zero temperature staggered antiferromagnetic order parameter M0 versus hole doping measured from optimum Dp_m, in the (Ca_{x}La_{1-x})(Ba_{1.75-x}La_{0.25+x})Cu_{3}O_{y} system. In this system the maximum Tc and the superexchange J vary by 30% between families (x). M0(x,Dp_m) is found to be x-independent. Using neutron diffraction we also determine the lattice parameters variations for all x and doping. The oxygen buckling angle is found to change with x, implying a change in the holes kinetic energy. We discuss the surprising insensitivity of M0(x,Dp_m) to the kinetic energy variations in the framework of the t-J model.
description: corrected version, published in Phys. Rev. B 78, 140508(R)
Reifegradmodell für die Verwaltung des Datenzugriffs
Creators: name: Wawer, Max Leo
name: Lachmayer, Roland
Publisher: name: Heidelberg : heiBOOKS
Year: 2023
Subjects: subject: Reifegradmodell
subject: Datenzugriff
subject: Forschungsdatenmanagement
subject: FDM
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Durch die Anforderung Forschungsergebnisse langfristig verfügbar und nachnutzbar zu machen, werden Forschende in der datenintensiver werdenden ingenieurwissenschaftlichen Forschung mit einer Vielzahl an Leitlinien und Richtlinien für den Umgang mit Forschungsdaten konfrontiert, welche es seitens der Forschenden umzusetzen gilt. Der Umgang mit forschungsbezogenen Daten erstreckt sich entlang des Datenlebenszyklus, von der Datenmanagementplanung bis zur Datennachnutzung. Als Forschungsdatenmanagement (FDM) werden dabei alle Maßnahmen entlang des Datenlebenszyklus verstanden, um Daten nachnutzbar, nachvollziehbar und nachprüfbar zu machen. Die zusätzlichen Anforderungen durch die Umsetzung des FDMs stellt die Forschenden vor die Herausforderung Kenntnisse in allen Bereichen des FDMs für eine adäquate Umsetzung zu besitzen. Dies betrifft viele neue Prozesse und Aktivitäten, um den Umgang mit Forschungsdaten effektiv zu gestalten. Ein wichtiger Aspekt ist es dabei Daten zugänglich zu machen. Zugänglich gemachte Daten haben den Vorteil die Effizienz der Forschung durch eine Nachnutzbarkeit zu erhöhen und Forschungsergebnisse nachvollziehbarer zu gestalten. Hier gilt es in den Forschungsprojekten und auf Organisationsebene Prozesse zu definieren, die den Anforderungen der ingenieurwissenschaftlichen Forschung entsprechen. Eine Betrachtung definierter Ziele und Praktiken für die Verwaltung des Datenzugriffs kann die Prozessgestaltung auf Projekt- oder Organisationsebene unterstützen und den genannten Mehrwert zugänglich gemachter Daten durch definierte Prozesse bestärken. Durch die Entwicklung und den Einsatz von Reifegradmodellen können bestehende Prozesse auf Projekt- oder Organisationsebene bewertet werden. Zudem lassen sich Ziele zur Verbesserung der Prozesse aufzeigen, mit denen sich neue Handlungsoptionen abhängig einer Reifestufe ableiten lassen. Reifegradmodelle sind dabei ein für das Prozessmanagement und die Qualitätsverbesserung einsetzbares Werkzeug und dienen als Lösungsansatz für die Verbesserung und Umsetzung definierter Prozesse. In diesem Beitrag wird ein entwickeltes Reifegradmodell für die Verwaltung des Datenzugriffs in Forschungsprojekten dargestellt. Jede Reifestufe enthält eine Anzahl definierter Ziele und Praktiken entsprechend einer gegebenen Reifegradcharakteristik. Dieses Modell dient der Bewertung und der Verbesserung von Prozessen, um Daten zugänglich zu machen.
"By nature’s law designed" : the definition of womanhood in mid-nineteenth century America
Creators: name: Green, Anna E.
Publisher: name: University of British Columbia
Year: 2010

description: This thesis explores how 'womanhood' was defined by a group of sixteen women publicists in mid-nineteenth century America, through their books, newspapers and journals published over a twenty-five year span leading up to the Civil War. Of the publicists, nine attended woman's rights conventions and were active in the movement, seven were adamantly opposed to the call for woman's rights. The sixteen publicists fall into three categories, conservative, liberal and radical; however, these do not correspond with membership, or non-membership, of the woman's rights movement. The conservative publicists believed that woman's nature rested upon the natural laws of her anatomy and physiology, which had been designed at the Creation to fulfil a specific function in God's ordered universe. Drawing upon the Bible, and popular scientific methods and concepts, the conservatives emphasised the structure and function of woman's body, and drew by analogy conclusions about the structure and function of her mind. The liberal publicists shared the belief in a fundamental sexual dualism permeating the natural world, and employed the same matter-mind analogies. However, pre-occupied with the cause of the exceptional woman, the liberals argued that the sexual dualism was not rigid, that women were born with exceptional creative talents that should be accepted as part of their womanhood and not repressed. The radical publicists denied the application of any such physiological determinism to the definition of womanhood, and argued that nurture, not nature, moulded women to fulfil cultural expectations.. Womanhood, they declared, was subject to the same natural laws as manhood, with the same needs, abilities, and capacities. Upon these three definitions the publicists rested various injunctions and prescriptions that were intended to show American women what their true function was, and how best to fulfil it. However, these prescriptions do not correspond with the public/private sphere dichotomy that historians have identified as the fundamental difference between members and non-members of the woman's rights movement. Rather the distinction to be made between the publicists is one of 'moral influence' versus 'self-realisation'. The conservative publicists argued that woman's function was to exercise her 'moral influence', and this could be extended into clearly defined public activity, including that of suffrage. The liberals fluctuated between this approach and that of the radicals, who argued that woman needed to achieve 'self-realisation' through the medium of labour and participation in public affairs.
Datenqualitätssicherung im Forschungsprozess am Beispiel von Zugversuchen
Creators: name: Müller, Laura
name: Wawer, Max Leo
name: Heimes, Norman
name: Uhe, Johanna
name: Koepler, Oliver
name: Auer, Sören
name: Lachmayer, Roland
name: Mozgova, Iryna
Publisher: name: Erlangen : Ehemaligennetzwerk des Lehrstuhls für Konstruktionstechnik (KTmfk) Erlangen e.V.
Year: 2023
Subjects: subject: data quality assurance
subject: quality dimension
subject: research data management
subject: research data life cycle
subject: Datenqualitätssicherung
subject: Qualitätsdimensionen
subject: Forschungsdatenmanagement
subject: Forschungsdatenlebenszyklus
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Progressive digitization throughout the entire product data life cycle requires a more sensitive handling and understanding of data within engineering processes. Regarding engineering research data, the aim is to implement the FAIR data principles (Findable, Accessible, Interoperable, Reusable) to guarantee the post-usability of research data. To ensure the quality of data throughout the entire research process a methodical approach had been developed. Based on the quality categories Intrinsic, Representative, Contextual and Available, the related quality dimensions are considered differentiated along the research data life cycle and presented in a concept. As a use case, this concept is carried out on a tensile test with documentation of results in a research data management system.
Uniform $L^p$ estimates for solutions to the inhomogeneous 2D Navier-Stokes equations and application to a chemotaxis-fluid system with local sensing
Creators: name: Fuest, Mario
name: Winkler, Michael
Publisher: name: arXiv
Year: 2024
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K65 (primary), 35Q55, 35Q92, 92C17 (secondary)

description: The chemotaxis-Navier-Stokes system \begin{equation*}\label{1} \left\{ \begin{array}{rcl} n_t+u\cdot\nabla n &=& Δ\big(n c^{-α} \big), \\[1mm] c_t+ u\cdot\nabla c &=& Δc -nc,\\[1mm] u_t + (u\cdot\nabla) u &=&Δu+\nabla P + n\nablaΦ, \qquad \nabla\cdot u=0, \end{array} \right. \end{equation*} modelling the behavior of aerobic bacteria in a fluid drop, is considered in a smoothly bounded domain $Ω\subset \mathbb R^2$. For all $α> 0$ and all sufficiently regular $Φ$, we construct global classical solutions and thereby extend recent results for the fluid-free analogue to the system coupled to a Navier-Stokes system.
 As a crucial new challenge, our analysis requires a priori estimates for $u$ at a point in the proof when knowledge about $n$ is essentially limited to the observation that the mass is conserved. To overcome this problem, we also prove new uniform-in-time $L^p$ estimates for solutions to the inhomogeneous Navier-Stokes equations merely depending on the space-time $L^2$ norm of the force term raised to an arbitrary small power.
description: 17 pages
Non-Standard Interaction Effects at Reactor Neutrino Experiments
Creators: name: Ohlsson, Tommy
name: Zhang, He
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study non-standard interactions (NSIs) at reactor neutrino experiments, and in particular, the mimicking effects on θ_13. We present generic formulas for oscillation probabilities including NSIs from sources and detectors. Instructive mappings between the fundamental leptonic mixing parameters and the effective leptonic mixing parameters are established. In addition, NSI corrections to the mixing angles θ_13 and θ_12 are discussed in detailed. Finally, we show that, even for a vanishing θ_13, an oscillation phenomenon may still be observed in future short baseline reactor neutrino experiments, such as Double Chooz and Daya Bay, due to the existences of NSIs.
description: 17 pages, 5 figures, version to appear in PLB
A Cellular Automaton Model of Pulsar Glitches
Creators: name: Warszawski, L.
name: Melatos, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A cellular automaton model of pulsar glitches is described, based on the superfluid vortex unpinning paradigm. Recent analyses of pulsar glitch data suggest that glitches result from scale-invariant avalanches \citep{Melatos07a}, which are consistent with a self-organized critical system (SOCS). A cellular automaton provides a computationally efficient means of modelling the collective behaviour of up to $10^{16}$ vortices in the pulsar interior, whilst ensuring that the dominant aspects of the microphysics are not lost. The automaton generates avalanche distributions that are qualitatively consistent with a SOCS and with glitch data. The probability density functions of glitch sizes and durations are power laws, and the probability density function of waiting times between successive glitches is Poissonian, consistent with statistically independent events. The output of the model depends on the physical and computational paramters used. The fitted power law exponents for the glitch sizes ($a$) and durations ($b$) decreases as the strength of the vortex pinning increases. Similarly the exponents increase as the fraction of vortices that are pinned decreases. For the physical and computational parameters considered, one finds $-4.3\leq a \leq -2.0$ and $-5.5\leq b\leq -2.2$, and mean glitching rates in the range $0.0023\leqλ\leq0.13\$ in units of inverse time.
description: 18 pages, 13 figures, accepted for publication in MNRAS