cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quotients of unstable subvarieties and moduli spaces of sheaves of fixed Harder-Narasimhan type
Creators: name: Hoskins, Victoria
name: Kirwan, Frances
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: When a reductive group $G$ acts linearly on a complex projective scheme $X$ there is a stratification of $X$ into $G$-invariant locally closed subschemes, with an open stratum $X^{ss}$ formed by the semistable points in the sense of Mumford's geometric invariant theory which has a categorical quotient $X^{ss} \to X//G$. In this article we describe a method for constructing quotients of the unstable strata. As an application, we construct moduli spaces of sheaves of fixed Harder-Narasimhan type with some extra data (an '$n$-rigidification') on a projective base.
description: 33 pages, minor revision. To appear in the Proceedings of the London Mathematical Society
Peristaltic Transport of a Couple Stress Fluid: Some Applications to Hemodynamics
Creators: name: Maiti, S.
name: Misra, J. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The present paper deals with a theoretical investigation of the peristaltic transport of a couple stress fluid in a porous channel. The study is motivated towards the physiological flow of blood in the micro-circulatory system, by taking account of the particle size effect. The velocity, pressure gradient, stream function and frictional force of blood are investigated, when the Reynolds number is small and the wavelength is large, by using appropriate analytical and numerical methods. Effects of different physical parameters reflecting porosity, Darcy number, couple stress parameter as well as amplitude ratio on velocity profiles, pumping action and frictional force, streamlines pattern and trapping of blood are studied with particular emphasis. The computational results are presented in graphical form. The results are found to be in good agreement with those of Shapiro et. al \cite{r25} that was carried out for a non-porous channel in the absence of couple stress effect. The present study puts forward an important observation that for peristaltic transport of a couple stress fluid during free pumping when the couple stress effect of the fluid/Darcy permeability of the medium, flow reversal can be controlled to a considerable extent. Also by reducing the permeability it is possible to avoid the occurrence of trapping phenomenon.
Single-cell RNA Sequencing of anaplastic thyroid carcinoma samples
Creators: name: 王玉龙(Yu-Long Wang)
Publisher: name: CNGB
Year: 2023
Subjects: Transcriptome or Gene expression
Monoisolate
Medical

description: Anaplastic thyroid cancer (ATC) is a leading lethal tumor, and it is resistant to most conventional therapy. However, recent clinical trials indicated that immunotherapy performed better in ATC than in the late stage of papillary thyroid cancer (PTC). To explore the tumor microenvironment (TME), we conducted single-cell RNA sequencing (scRNA-seq) to profile the cellular landscape of ATC.
Does inclusive education change teachers' educational goals? A comparative analysis of two cross-sectional surveys in Austria
Creators: name: Schwab, Susanne
name: Gebhardt, Markus
name: Hessels, M. G. P.
name: Ellmeier, B.
name: Gmeiner, S.
name: Rossmann, P.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Special educational needs, inclusive education, teachers, educational goals, attitudes
subject: 370 Erziehung, Schul- und Bildungswesen

description: This study analyses whether an increasing inclusion rate in Austria was accompanied by a change in teachers’ educational goals and whether these goals were different for teachers in inclusive or non-inclusive settings. Educational goals were rated by 359 teachers in 1998 and 219 teachers in 2009. General pedagogical goals, as well as orientation on authority and discipline are considered less important by primary school teachers in inclusive classes than by those in schools without inclusion. The attitudes of teachers towards inclusion and teachers’ estimates of the impact of inclusion of students with different types of disabilities were not correlated in 1998, but positively correlated in 2009 with the emphasis on the individuality of the students in the class, and not correlated in 1998, but negatively correlated in 2009 with the orientation on authority and discipline. It is concluded that a positive change can be observed.
Achievement and Integration of Students with Special Needs (SEN) in the Fifth Grade
Creators: name: Gebhardt, Markus
name: Schwab, Susanne
name: Krammer, M.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: Special Needs, School Performance, Integration
subject: 370 Erziehung, Schul- und Bildungswesen

description: In Styria 77.3% of all students with special needs are educated in integrated classrooms. Currently, it is not known much either about the school performance nor the active class participation of these students. This study examined 230 fifth grade students – 43 with and 187 students without special educational needs (SEN). Moreover, it is important to acknowledge that the available data for this study represents the first wave of larger longitudinal study. The school performance of the students with SEN ranged one standard deviation below the level of the students without SEN. All students felt emotionally well integrated in the school settings, but the differences in the degree of social integration were evident. In fact, the students with SEN mentioned that they got along well with their classmates less frequently than the students without SEN.
An Examination of Public Opinion in Austria Towards Inclusion. Development of the “Attidutes Towards Inclusion Scale”- ATIS
Creators: name: Schwab, S.
name: Gebhardt, Markus
name: Ederer-Fick, E.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: attitudes towards integration, inclusive education, special educational needs, disabilities
subject: 370 Erziehung, Schul- und Bildungswesen

description: The ‘Attitudes Towards Integration Scale’ (ATIS) assesses the attitude of the general public towards the school integration of children with disabilities. The scale was empirically created in a pilot study (n=351) and later used to survey 2158 people. The data from both surveys are analysed in the present paper; the results show that the scale exhibits acceptable internal consistency (Cronbach’s α=.83) and that the factorial structure of the scale can be considered as largely confirmed. Overall, the surveyed persons reported a positive attitude towards the school integration of children with disabilities. However, the form of the disability of the integrated child and the level of education as well as the participants’ familiarity with the topic of integration of persons with disabilities, age and gender played a role in their assessment. In addition, the results show that pupils in general have a more negative attitude than students and employed persons. Sequence effects could also be shown. Inclusive education is seen as more positive when respondents are first asked to evaluate how a child with a disability gets on in an integrated class and have to evaluate later how a child with the same disability gets on in a special school setting of an integrated class.
About Thinning Invariant Partition Structures
Creators: name: Starr, Shannon
name: Vermesi, Brigitta
name: Wei, Ang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G55, 60K35

description: Bernoulli-$p$ thinning has been well-studied for point processes. Here we consider three other cases: (1) sequences $(X_1,X_2,...)$; (2) gaps of such sequences $(X_{n+1}-X_1)_{n\in\mathbb{N}}$; (3) partition structures. For the first case we characterize the distributions which are simultaneously invariant under Bernoulli-$p$ thinning for all $p \in (0,1]$. Based on this, we make conjectures for the latter two cases, and provide a potential approach for proof. We explain the relation to spin glasses, which is complementary to important previous work of Aizenman and Ruzmaikina, Arguin, and Shkolnikov.
description: 22 pages, revised to improve results
Ultracold molecular plasma
Creators: name: Schulz-Weiling, Markus
Publisher: name: University of British Columbia
Year: 2017

description: The conditions aforded by a skimmed free-jet expansion intersected by two laser pulses, driving resonant transitions in nitric oxide, determine the phase-space volume of a dense molecular Rydberg ensemble. Spontaneous avalanche to plasma within this system leads to the development of two macroscopic domains. These domains are clearly distinguished by their polarizability as well as their locality within the plasma. The first domain appears at the system core, is polarized by fields exceeding 500 mV/cm and displays an ambipolar expansion character suggestive of initial electron temperatures exceeding 150 Kelvin. The second domain travels with the velocity of the supersonic beam and is robust to the application of several hundred V/cm pulses. It is further distinguished through the apparent arrest of relaxation channels, annealing the domain over a millisecond or more in a state far from thermal equilibrium. Both domains are linked via the spontaneous breaking of ellipsoidal symmetry to form bifurcating arrested volumes.
The Relationsship between Social and Emotional Integration and Reading Ability in Students with and without Special Educational Needs in Inclusive Classes
Creators: name: Schwab, Susanne
name: Hessels, M. G. P.
name: Gebhardt, Markus
name: Krammer, M.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 370 Erziehung, Schul- und Bildungswesen

description: This longitudinal study focuses on the development of reading abilities and its relationship with social and emotional integration in students with and without special educational needs (SEN). The first measurements (Time 1 [T1]) took place at the end of 5th grade; the second series (Time 2 [T2]) were 1 year later. Participants were 18 students with SEN, 18 students without SEN matched on intelligence with the SEN group, and 18 students without SEN with average IQs, all from integration classes in regular secondary education in Austria. The students with SEN consistently showed the lowest reading abilities in reading fluency of words and nonwords, sentence comprehension, and text comprehension, followed by the low-IQ students. The average-IQ students always showed the highest reading abilities. Students with SEN reported being less socially integrated than low-IQ students without SEN. Average-IQ students show the highest social integration. However, students with SEN showed a similar level of emotional integration as their peers. Regression analyses showed, as expected, that T1 measures of reading fluency of words and nonwords as well as sentence comprehension and text comprehension all predicted T2 measures of these variables. Intelligence was an additional predictor for word reading fluency in the average-IQ group only. Social and emotional integration appeared to be additional predictors for text comprehension at T2 for students with SEN but not for the other groups. The results of this study suggest that students will learn better when they feel socially and emotionally integrated.
Observer invariance of the collapse postulate of quantum mechanics
Creators: name: Silva, Milton A. da
name: Serra, Roberto M.
name: Celeri, Lucas C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyse the wave function collapse as seem by two distinct observers (with identical detectors) in relative motion. Imposing that the measurement process demands information transfer from the system to the detectors, we note that although different observers will acquire different amount of information from their measurements due to correlations between spin and momentum variables, all of them will agree about the orthogonality of the outcomes, as defined by their own reference frame. So, in this sense, such a quantum mechanical postulate is observer invariant, however the effective efficiency of the measurement process differs for each observer.
description: Accepted for publication in Int. J. Mod. Phys. B, special issue "Classical Vs Quantum correlations in composite systems" edited by L. Amico, S. Bose, V. Korepin and V. Vedral
Self-consistent-field ensembles of disordered Hamiltonians: Efficient solver and application to superconducting films
Creators: name: Stosiek, Matthias
name: Lang, Bruno
name: Evers, Ferdinand
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 500 Naturwissenschaften
subject: 530 Physik

description: Our general interest is in self-consistent-field (scf) theories of disordered fermions. They generate physically relevant subensembles (“scf ensembles”) within a given Altland-Zirnbauer class. We are motivated to investigate such ensembles (i) by the possibility to discover new fixed points due to (long-range) interactions; (ii) by analytical scf theories that rely on partial self-consistency approximations awaiting a numerical validation; and (iii) by the overall importance of scf theories for the understanding of complex interaction-mediated phenomena in terms of effective single-particle pictures. In this paper we present an efficient, parallelized implementation solving scf problems with spatially local fields by applying a kernel-polynomial approach. Our first application is the Boguliubov-deGennes theory of the attractive-U Hubbard model in the presence of on-site disorder; the sc fields are the particle density n(r) and the gap function Δ(r). For this case, we reach system sizes unprecedented in earlier work. They allow us to study phenomena emerging at scales substantially larger than the lattice constant, such as the interplay of multifractality and interactions or the formation of superconducting islands. For example, we observe that the coherence length exhibits a nonmonotonic behavior with increasing disorder strength already at moderate U. With respect to methodology our results are important because we establish that partial self-consistency (“energy-only”) schemes as typically employed in analytical approaches tend to miss qualitative physics such as island formation.
Landau-Ginzburg Chern-Simons model with Ue(1)xUg(1) Gauge Symmetry and Internal Pseudo-Photons
Creators: name: Ferreira, P. Castelo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this article it is studied, at variational level, a mathematical setup given by the Landau-Ginzburg Chern-Simons model for anyons in 2+1-dimensions within the framework of dimensional reduced Ue(1)xUg(1) extended electromagnetism with both vector gauge fields (photons) and pseudo-vector gauge fields (pseudo-photons) such that both magnetic and electric vortexes coexist in the planar system. This model exhibits explicit planar P and T discrete symmetries being the Hall conductivity consistently a tensor and the Dirac quantization on the electric and magnetic coupling constants is equivalent to the quantization of magnetic flux. It is also discussed a thickening to 4-dimensions of the model with explicit 4-dimensional P violation which allows either for electric and magnetic charge separation, either for the Meissner effect. Although mathematically consistent, the electromagnetic field content for this model does not coincide with the standard Hall effect being present an extra orthogonal electric and longitudinal magnetic fields.
description: 39 pages; 2 figures; based in hep-th/0703194 with corrections and 4D embedding; v2: title change and rewritten to clarify that this model does not directly correspond to the standard FQHE; v3: final version
Lehrkraftfeedback oder Spaß beim Spiel? Eine Experimentalstudie zum Einfluss von Lehrkraftfeedback auf die soziale Akzeptanz bei Grundschulkindern
Creators: name: Huber, C.
name: Gebhardt, Markus
name: Schwab, Susanne
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 370 Erziehung, Schul- und Bildungswesen

description: Im Mittelpunkt der vorliegenden Studie steht die Förderung der sozialen Akzeptanz von Schülerinnen und Schülern in der Grundschule. Es wird von der Hypothese ausgegangen, dass öffentliches Lehrkraftfeedback in der Grundschule die soziale Akzeptanz des Feedbackadressaten beeinflussen kann. Theoretische Grundlage ist die Theorie sozialer Referenzierungsprozesse (social referencing). Die Studie untersucht in einem PC-gestützten Experiment, inwieweit gezielt variiertes Lehrkraftfeedback die soziale Akzeptanz von vier fiktiven Kindern stärker beeinflussen kann als eine parallel variierte Vergleichsvariable (Spaß beim UNO-Spiel). Mittels einer Varianzanalyse wurden große Effekte für das Lehrkraftfeedback h p2 = 0.60 und UNO-Feedback h p2 = 0.35 gemessen. Lehrkraftfeedback hatte jedoch einen signifikant größeren Einfluss als die Vergleichsvariable. Zudem zeigte sich, dass das negative Feedback einen größeren Einfluss auf die Veränderung der sozialen Akzeptanz hatte als positives Feedback.
AN EMPIRICAL RESEARCH ON THE RELATIONSHIP OF EMOTIONAL INTELLIGENCE AND TRANSFORMATIONAL LEADERSHIP: A CASE STUDY OF TELECOM SECTOR OF PAKISTAN
Creators: name: Munir, Saqib
Publisher: name: Zenodo
Year: 2021
Subjects: Transformational leadership, Emotional Intelligence, Telecom Sector, Pakistan

description: Highly emotionally intelligent individuals play a major part in guiding and managing a firm into a seamless, happy, and healthy environment. World has grown itself to a global village because of fast, convenient, and open communication. The telecommunication sector changed everywhere around the world. In Pakistan, it has emerged as one of the fastest-growing industry.
 This study investigates the relationship amongst “Transformational leadership (TFL)”, “Emotional Intelligence (EI)” by using trait model and the outcomes as a result of leadership behaviour. Empirical research to validate the results in Pakistani settings was done. “Positivism” research paradigm was used for the research. Scale development and validation was done for data screening, confirmatory factor analysis, and data refinement. PLS-SEM was used to validate the relationship between the constructs followed by mediation and moderation analysis, and Hypothesis testing. The study is cross sectional and quantitative in nature with sample size 440. Stratified sampling method was employed, and the data was gathered from the managers of telecom companies of Pakistan via two standardised instruments “TEIQue-SF” and “MLQ-5X”. The data analysis was done by using SmartPLS3 and SPSS software.
 The results as consistent with early research and found an association among emotional intelligence, transformational leadership, and outcomes. The analysis shows the importance of self-control, sociability, emotionality and wellbeing and their link to transformational leadership style. Respondents were found with higher than mean level scores for both EI and TFL. The association among Trait EI and transformational leadership is significantly moderated by Age, Marital status, Qualification, and the telecom organisation in which a person is working. Moreover, TFL mediated the association between Trait EI and Outcomes. The limitations of the study included time horizon, use of trait model for EI, self-reporting versions of instruments and selection of instruments for data collection.
Efficient Sampling of Band-limited Signals from Sine Wave Crossings
Creators: name: Selva, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: Complex Variables (math.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This correspondence presents an efficient method for reconstructing a band-limited signal in the discrete domain from its crossings with a sine wave. The method makes it possible to design A/D converters that only deliver the crossing timings, which are then used to interpolate the input signal at arbitrary instants. Potentially, it may allow for reductions in power consumption and complexity in these converters. The reconstruction in the discrete domain is based on a recently-proposed modification of the Lagrange interpolator, which is readily implementable with linear complexity and efficiently, given that it re-uses known schemes for variable fractional-delay (VFD) filters. As a spin-off, the method allows one to perform spectral analysis from sine wave crossings with the complexity of the FFT. Finally, the results in the correspondence are validated in several numerical examples.
description: To appear in the IEEE Transactions on Signal Processing
title: Das globalisierte Spiel
title: Fußball und Identitäten in Brasilien aus transnationaler Perspektive, 1894–1930
titleType: Subtitle
Creators: name: Peters, Christina
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: wbg Academic
subject: Historamericana
subject: Brasilien
subject: Fußball
subject: Identität
subject: Sport
subject: Nationalität
subject: Rio de Janeiro
subject: Diplomatie
subject: 900 Geschichte und Geografie::980 Geschichte Südamerikas::980 Geschichte Südamerikas

description: Fußball ist heute selbstverständlicher Teil brasilianischer Identitätsentwürfe. Diese identitätsstiftende Funktion erhielt Fußball sofort nach seiner Verbreitung nach Brasilien Ende des 19. Jahrhunderts. Zur Zeit der Ersten Republik verhandelten Menschen unterschiedlicher sozialer Herkunft über diesen Sport nationale, regionale und »rassische« Kategorien; zugleich wurde er Teil der diplomatischen Außendarstellung des Landes. Wie die Autorin Christina Peters argumentiert, entstanden diese Identitätskonstruktionen in den Städten Rio de Janeiro und São Paulo erst unter transnationalen Bezugnahmen und Interaktionen. Sie zeigt damit, wie Brasilien zu Beginn des 20. Jahrhunderts über den Fußball in globale kulturelle Zusammenhänge eingebunden wird.
The Transition from School to the Workplace for Students with Learning Disabilities: Status Quo and the Efficiency of Pre-Vocational and Vocational Training Schemes
Creators: name: Gebhardt, Markus
name: Tretter, T.
name: Schwab, S.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: transition from school to workplace in Germany, pre-vocational training, vocational training, supported employment, special needs, learning disability
subject: 370 Erziehung, Schul- und Bildungswesen

description: This article is concerned with the transition from school to the workplace for pupils with special educational needs in Germany. First, an outline of the standard system of professional training in Germany shall be given. Then, the initial conditions that adolescents are confronted with at the end of their time in school shall be examined. This review will then focus on studies and surveys of students with special educational needs who have graduated from school in Germany. It quickly becomes apparent that, after school, adolescents with special educational needs (SEN) most times visited a one-year school-based pre-vocational programme, and afterwards a state-funded school-based vocational programme; therefore the standard German dual-educational apprenticeship system generally doesn’t apply. Looking at segregated school-based vocational training for students with SEN, it can be observed that the placement rate into the general labour market is not sufficient. Inclusive models play a minor role here, even if the analyses at hand suggest promising perspectives.
Commensurate to Incommensurate Transition of Three Dimensional Charge Density Waves
Creators: name: Wang, Hao
name: Luo, Qiang
name: Chen, Ji
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Charge density wave (CDW) is a widely concerned emergent phenomenon in condensed matter physics. To establish a systematic understanding of CDW, we develop a diagrammatic self-consistent-field approach for cubic Holstein model employing fluctuation exchange approximation, and explore the emergence and transition of three-dimensional CDWs. Commensurate CDW (c-CDW) locked at $(π,π,π)$ is favored near half-filling, and the transition temperature is predicted around half of the nearest-neighbor hopping. Large hole doping leads to a suppression of CDW transition temperature and the emergence of incommensurate CDW (i-CDW), which is evidenced by a drifting of the ordering vector away from $(π,π,π)$ towards $(π,π,0)$. Phonon frequency significantly impacts the transition temperature and the phase boundary between c-CDW and i-CDW, and the optimal frequency for enlarging the CDW regime is also predicted near half of the nearest-neighbor hopping. These new theoretical results provide a systematic understanding of CDW and a fresh perspective on emergent phenomena dominated by electron-phonon interaction.
Die Behandlung neurochirurgischer Komplikationen und Spätfolgen bei Patienten*innen mit einer angeborenen Wirbelsäulenfehlbildung
Creators: name: Finger, Tobias Florian
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2022
Subjects: subject: adult tethered cord
subject: apina bifida
subject: myelomeningocele
subject: filum terminale
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Die Zielsetzung dieser Arbeit war es, mögliche Komplikationen von Patienten*innen mit einer Spina bifida mit besonderem Fokus auf Patient*innen mit einer MMC zu quantifizieren und Einflussfaktoren auf das klinische Resultat zu identifizieren und Möglichkeiten aufzuzeigen, um die Prognoseabschätzung und auch das therapeutische Vorgehen zu optimieren. Im Fokus stehen zum einen Spätfolgen und Komplikationen im Bereich der Wirbelsäule sowie Shunt-assoziierte Komplikationen mit einem Schwerpunkt auf Shuntinfektionen.
Stereolithography vs. Direct Light Processing for Rapid Manufacturing of Complete Denture Bases: An In Vitro Accuracy Analysis
Creators: name: Unkovskiy, Alexey
name: Schmidt, Franziska
name: Beuer, Florian
name: Li, Ping
name: Spintzyk, Sebastian
name: Kraemer Fernandez, Pablo
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: stereolithography
subject: direct light processing
subject: complete denture
subject: edentulism
subject: rapid prototyping
subject: 3D printing
subject: additive manufacturing
subject: rapid manufacturing
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: The topical literature lacks any comparison between stereolithography (SLA) and direct light processing (DLP) printing methods with regard to the accuracy of complete denture base fabrication, thereby utilizing materials certified for this purpose. In order to investigate this aspect, 15 denture bases were printed with SLA and DLP methods using three build angles: 0°, 45° and 90°. The dentures were digitalized using a laboratory scanner (D2000, 3Shape) and analyzed in analyzing software (Geomagic Control X, 3D systems). Differences between 3D datasets were measured using the root mean square (RMS) value for trueness and precision and mean and maximum deviations were obtained for each denture base. The data were statistically analyzed using two-way ANOVA and Tukey's multiple comparison test. A heat map was generated to display the locations of the deviations within the intaglio surface. The overall tendency indicated that SLA denture bases had significantly higher trueness for most build angles compared to DLP (p < 0.001). The 90° build angle may provide the best trueness for both SLA and DLP. With regard to precision, statistically significant differences were found in the build angles only. Higher precision was revealed in the DLP angle of 0° in comparison to the 45° and 90° angles.
Ultrafast terahertz saturable absorbers using tailored intersubband polaritons
Creators: name: Raab, Jürgen
name: Mezzapesa, Francesco P.
name: Viti, L.
name: Dessmann, Nils
name: Diebel, Laura K.
name: Li, Lianhe
name: Davies, A. Giles
name: Linfield, Edmund H.
name: Lange, Christoph
name: Huber, Rupert
name: Vitiello, Miriam S.
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 530 Physik

description: Atomically strong light pulses can drive sub-optical-cycle dynamics. When the Rabi frequency—the rate of energy exchange between light and matter—exceeds the optical carrier frequency, fascinating non-perturbative strong-field phenomena emerge, such as high-harmonic generation and lightwave transport. Here, we explore a related novel subcycle regime of ultimately strong light–matter interaction without a coherent driving field. We use the vacuum fluctuations of nanoantennas to drive cyclotron resonances of two-dimensional electron gases to vacuum Rabi frequencies exceeding the carrier frequency. Femtosecond photoactivation of a switch element inside the cavity disrupts this ‘deep-strong coupling’ more than an order of magnitude faster than the oscillation cycle of light. The abrupt modification of the vacuum ground state causes spectrally broadband polarization oscillations confirmed by our quantum model. In the future, this subcycle shaping of hybrid quantum states may trigger cavity-induced quantum chemistry, vacuum-modified transport or cavity-controlled superconductivity, opening new scenarios for non-adiabatic quantum optics.
Generalized Local Fractional Taylor's Formula with Local Fractional Derivative
Creators: name: Yang, Xiao-Jun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 26A24, 26A27

description: In the present paper, a generalized local Taylor formula with the local fractional derivatives (LFDs) is proposed based on the local fractional calculus (LFC). From the fractal geometry point of view, the theory of local fractional integrals and derivatives has been dealt with fractal and continuously non-differentiable functions, and has been successfully applied in engineering problems. It points out the proof of the generalized local fractional Taylor formula, and is devoted to the applications of the generalized local fractional Taylor formula to the generalized local fractional series and the approximation of functions. Finally, it is shown that local fractional Taylor series of the Mittag-Leffler type function is discussed.
description: 5 pages
MODEL-BASED IMAGE CHARACTERIZATION AND EMPIRICAL MODELING OF HIGH BURNUP MONOLITHIC U-MO FUEL
Creators: name: Figueroa, Alejandro Luis
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Materials engineering not elsewhere classified

description: Monolithic uranium molybdenum alloys (U-Mo) are considered a candidate for converting high-performance research and test reactors from high-enriched uranium to low enrichment alternatives. The metallic fuel is capable of conversion due to the high U loading and favorable radiation performance. During irradiation, the fuel undergoes a three-part swelling behavior, with an initial linear swelling rate followed by an increase in the swelling rate represented by an increase in the nucleation of fission-gas bubbles, and ending with stabilization at the highest fission densities. Understanding the high burnup regime is critical to extending the life of the reactor and creating accurate fuel performance models. To accurately inform swelling models, it is necessary to experimentally characterize the pore evolution as a function of burnup and the influence of diffusion barrier-fuel interaction on the morphology. Therefore, a systematic approach was conducted to experimentally characterize the influence of irradiation and fuel-diffusion barrier interaction on the pore morphology and then empirically model the porosity evolution. Initially, three separate locations in a monolithic U-Mo fuel plate with burnups ranging from 8.9-9.4x1021 fissions/cm3 were investigated using scanning electron micrography (SEM) to characterize the morphological porosity dependence on fission density. To investigate the impact of the Zr-fuel interface on the pore morphology, two specimens were imaged using synchrotron microcomputed tomography (Sr-µCT) from a U-Mo monolithic miniplate irradiated to 9.8x1021 fissions/cm3, one at the diffusion barrier and one in the bulk fuel. Synchrotron microcomputed tomography allows for the characterization of the influence of fuel-Zr diffusion barrier interaction on the pore morphology in three dimensions; however, due to the novelty of this technique applied to nuclear fuels the results were verified with SEM serial sectioning. The multimodal comparison between the Sr-µCT and SEM serial sectioning allows for a direct assessment of the capabilities of each technique for nuclear fuel applications. Due to the complex microstructure and imaging challenges in analyzing these samples, several model-based image processing and characterization tools were developed to aid in the analysis. An empirical model for porosity evolution in high-burnup U-Mo was developed and accurately modeled the porosity behavior. The experimental results from the current work and the empirical model developed can be used to inform mechanistic modeling efforts in the community.
Chiral hypervalent iodine mediated enantioselective oxidative dearomatization of naphthols
Creators: name: Jain, Nikita
Publisher: name: University of British Columbia
Year: 2017

description: This dissertation investigates and describes the hypervalent iodine mediated dearomatization of naphthols, thereby yielding diversity of spiro-heterocyclic compounds in both racemic and chiral form. The first part of this thesis discloses the synthesis of racemic spiropyrrolidines and spirolactams via oxidative amidation of corresponding naphtholic sulfonamides, employing DIB as the oxidant. Enantioselective variant of the same have been demonstrated by using in situ generated chiral hypervalent iodine to provide chiral spiropyrrolidines. A noteworthy side reaction discovered in the course of these studies is the asymmetric oxidative addition of meta-chlorobenzoic acid to the naphtholic sulfonamides. The resulting acyloxylated adducts were formed with a greater degree of asymmetric induction compared to spiropyrrolidines in the same reaction mixture. Based on the results obtained from optimization study and substrate scope, plausible mechanistic insights of both cyclization and acyloxylation reactions have been provided. The second part of this thesis unravels the spiroetherification of naphtholic alcohols, thereby yielding spiroethers both in racemic and chiral form. Chiral hypervalent iodine reagents generated in situ provided a range of spiroethers with excellent ee’s and high yields. These chiral oxidants have been evaluated for kinetic resolution of naphtholic primary alcohols bearing stereogenic center at β-position in the side chain.
Effects of Cooperative Learning Methods in German Language Arts on Reading Ability and Social Behavior of High School Students
Creators: name: Krammer, M.
name: Gebhardt, Markus
name: Gastager, A.
name: Paleczek, L.
name: Rossmann, P.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: cooperative learning, implementation, reading comprehension, prosocial behavior
subject: 370 Erziehung, Schul- und Bildungswesen

description: This study examined the implementation and outcomes of cooperative learning methods in daily school life. In the context of an intervention wait-list control group research design lasting over two years, a group of Austrian students was taught using mainly cooperative learning methods in German language arts. In addition to standardized tests, self and peer report questionnaires assessed reading ability and aspects of social behavior before and after the intervention. Focus group interviews of teachers were used to investigate the implementation of cooperative learning methods in daily class life. The participants were nineteen teachers and 294 fifth and sixth graders from eight different schools at the secondary level. The results show that teachers prefer relatively specific cooperative learning methods. The results also illustrate that students who used cooperative learning methods in German language classes developed significantly better in reading comprehension than the students in the wait-list control group. However, concerning the reports of social behavior, most differences between the two groups failed to reach statistical significance.
On the Diagnosis of Learning Disabilities in the Austrian School System. Official Directions and the Diagnostic Process in Practice in Styria/Austria
Creators: name: Krammer, M.
name: Gebhardt, Markus
name: Rossmann, P.
name: Paleczek, L.
name: Gasteiger-Klicpera, B.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: Learning disability, Diagnostic identification, IQ tests, Special educational needs
subject: 370 Erziehung, Schul- und Bildungswesen

description: There is no international consensus concerning the diagnostic criteria used to diagnose a learning disability (LD). In fact, various diagnostic criteria are used and interpreted differently in different countries. A common denominator can only be found in the fact that intelligence quotient (IQ) is often seen as important in order to identify LD, either in the framework of discrepancy models between cognitive ability and achievement or in the context of models relating LD to below-average IQ (Grünke, 2004). The present paper examines the criteria that are used for the diagnosis of LD in Styria, a federal state of Austria. For this purpose, 25 special educational needs (SEN) reports of children identified as having learning disabilities were examined. In addition, three expert interviews with school administration authorities were conducted. The results provide a first indication that IQ scores are not important for the diagnosis of LD in Styria. In fact, the diagnostic procedure seems to be quite unregulated and standardized tests are hardly ever used in this context. Moreover, the results show that a diagnosis of LD in Styria is usually based on poor reading skills, poor basic arithmetic skills, deficits in German language, and/or behavioral problems.
Solitonics with Polyacetylenes
Creators: name: Hernangómez-Pérez, Daniel
name: Gunasekaran, Suman
name: Venkataraman, Latha
name: Evers, Ferdinand
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: polyacetylene, solitons, density functional theory, topology
subject: 500 Naturwissenschaften
subject: 530 Physik

description: Polyacetylene molecular wires have attracted a long-standing interest for the past 40 years. From a fundamental perspective, there are two main reasons for the interest. First, polyacetylenes are a prime realization of a one-dimensional topological insulator. Second, long molecules support freely propagating topological domain-wall states, so-called “solitons,” which provide an early paradigm for spin-charge separation. Because of recent experimental developments, individual polyacetylene chains can now be synthesized on substrates. Motivated by this breakthrough, we here propose a novel way for chemically supported soliton design in these systems. We demonstrate how to control the soliton position and how to read it out via external means. Also, we show how extra soliton–antisoliton pairs arise when applying a moderate static electric field. We thus make a step toward functionality of electronic devices based on soliton manipulation, that is, “solitonics”.
Formative Diagnostik durch die Onlineplattform Levumi
Creators: name: Mühling, A.
name: Gebhardt, Markus
name: Diehl, K.
Publisher: name: Universität Regensburg
Year: 2017
Subjects: subject: 370 Erziehung, Schul- und Bildungswesen

description: Das rechtzeitig Erkennen von Lernschwierigkeiten stellt eine große Herausforderung im Schulunterricht dar. Insbesondere im inklusiven Unterricht mit Menschen mit Behinderung ist dies der Fall. Hier muss der Unterricht individuell angepasst werden. Durch eine Lernverlaufsmessung können individuelle Förderungen geplant und ihr Erfolg überwacht werden. Dieser Artikel stellt eine Onlineplattform vor, die ein solches Konzept im Unterricht für Lehrkräfte umsetzbar macht und dabei auch einen Austausch zwischen der empirischen Bildungsforschung und dem Alltag der Schulpraxis ermöglicht.
High-Energy String Scattering Amplitudes and Signless Stirling Number Identity
Creators: name: Lee, Jen-Chi
name: Yan, Catherine H.
name: Yang, Yi
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a complete proof of a set of identities (7) proposed recently from calculation of high-energy string scattering amplitudes. These identities allow one to extract ratios among high-energy string scattering amplitudes in the fixed angle regime from high-energy amplitudes in the Regge regime. The proof is based on a signless Stirling number identity in combinatorial theory. The results are valid for arbitrary real values $L$ rather than only for $L=0,1$ proved previously. The identities for non-integer real value $L$ were recently shown to be realized in high-energy compactified string scattering amplitudes [He S., Lee J.C., Yang Y., arXiv:1012.3158]. The parameter $L$ is related to the mass level of an excited string state and can take non-integer values for Kaluza-Klein modes.
Non-adiabatic stripping of a cavity field from electrons in the deep-strong coupling regime
Creators: name: Halbhuber, Maike
name: Mornhinweg, Joshua
name: Zeller, Viola
name: Ciuti, C.
name: Bougeard, Dominique
name: Huber, Rupert
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 530 Physik

description: Atomically strong light pulses can drive sub-optical-cycle dynamics. When the Rabi frequency—the rate of energy exchange between light and matter—exceeds the optical carrier frequency, fascinating non-perturbative strong-field phenomena emerge, such as high-harmonic generation and lightwave transport. Here, we explore a related novel subcycle regime of ultimately strong light–matter interaction without a coherent driving field. We use the vacuum fluctuations of nanoantennas to drive cyclotron resonances of two-dimensional electron gases to vacuum Rabi frequencies exceeding the carrier frequency. Femtosecond photoactivation of a switch element inside the cavity disrupts this ‘deep-strong coupling’ more than an order of magnitude faster than the oscillation cycle of light. The abrupt modification of the vacuum ground state causes spectrally broadband polarization oscillations confirmed by our quantum model. In the future, this subcycle shaping of hybrid quantum states may trigger cavity-induced quantum chemistry, vacuum-modified transport or cavity-controlled superconductivity, opening new scenarios for non-adiabatic quantum optics.
SYM anomalous dimension from open string engineered curvature
Creators: name: Park, I. Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the full type IIB open superstring setup, we show that there exists a vertex operator, denoted by $V_L$, whose renormalization reproduces the same anomalous dimension matrix that was obtained by Minahan and Zarembo (MZ) in {\em JHEP} {\bf 0303}, 013 (2003). The vertex operator is a gauge singlet, and has the same SO(6) index structure as the operator used by MZ. To obtain the SYM anomalous dimensions, one of the key ingredients is the non-abelianization of the non-linear sigma model action in a D-brane background. In {\em Phys.\ Lett.} {\bf B 660}, 583 (2008), it was conjectured that quantum effects of open strings on a stack of D-branes should generate the curvature. Even though the conjecture had passed a few consistency checks, the role of the higher order curvature terms has remain mostly unobserved until now. By choosing a special form of the non-abelianized counter vertex, $V_G$, we show that the SYM result is reproduced. We comment on fermionic completion of $V_L$ and on how the special form of the non-abelian vertex $V_G$ may arise.
description: 27 pages, 4 figures, refs and clarifications added, to appear in IJMPA
title: "Ara consacrata alla Fortuna Salutare", arte romana, inv. CLXVIII (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Erfassung von individualisiertem Unterricht in der Sekundarstufe I. Eine Quantitative Überprüfung der Skala "Individualisierter Unterricht" in zwei Schuluntersuchungen in der Steiermark
Creators: name: Gebhardt, Markus
name: Schwab, Susanne
name: Krammer, M.
name: Gasteiger-Klicpera, B.
name: Sälzer, C.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: Individualized teaching, Integration classes, Special educational needs
subject: 370 Erziehung, Schul- und Bildungswesen

description: Feyerer (1998) zeigte in den österreichischen Schulversuchen, dass integrative Schulkassen einen höheren Grad an individualisiertem Schulunterricht umsetzen als Klassen in der allgemeinen Schule ohne Schülerinnen und Schüler mit sonderpädagogischem Förderbedarf. Diese Aussage möchte die vorliegende Studie mehr als 10 Jahre später im integrativen Schulsystem der Steiermark mit der Skala zur Erfassung des individualisierten Unterrichts im integrativen Unterricht (Feyerer 1998) replizieren. In zwei Untersuchungen wurde die Skala erneut verwendet und empirisch überprüft. Dazu werden die Daten aus beiden Untersuchungen (N = 439 Schülerinnen und Schüler der fünften und sechsten Schulstufe) analysiert. Die Ergebnisse einer Faktorenanalyse zeigten eine dreifaktorielle Faktorenlösung, welche den Ergebnissen von Feyerer (Behindern Behinderte? Integrativer Unterricht auf der Sekundarstufe I, 1998) nur in Teilen entspricht. Für eine neu konstruierte Kurzskala kann jedoch eine akzeptable interne Konsistenz (Cronbachs Alpha von 0,73) nachgewiesen werden. Ein Vergleich zwischen Integrations- und Regelschulklassen zeigte, dass Schülerinnen und Schüler aus Integrationsklassen den Unterricht als integrativer wahrnahmen, als Schülerinnen und Schüler aus Regelschulklassen. Besonders die Antworten zur inneren Differenzierung wurden in Integrationsklassen häufiger positiv angegeben als in Regelschulklassen.