cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving Fine-tuning in Composite Higgs Models
Creators: name: Banerjee, Avik
name: Bhattacharyya, Gautam
name: Ray, Tirtha Sankar
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we investigate the next-to-minimal composite Higgs model with a SO(6)/SO(5) coset, whose pNGB sector includes a Standard Model singlet in addition to the usual Higgs doublet. The fermions are embedded in the representation 6 of SO(6). We study the region of parameter space of the model where the radiatively generated potential has global minima with both the doublet and the singlet fields developing vacuum expectation values. We investigate the consequences of kinetic and mass mixing between the Higgs and the singlet scalar that arise in this framework. We demonstrate that the ensuing doublet-singlet mixing can provide a handle to accommodate heavier resonances (top-partners) for a given compositeness scale as compared to the minimal composite Higgs model, thus relaxing the tension with the direct LHC bounds. The main phenomenological consequence of this is a sizable deviation of the Higgs couplings from the Standard Model predictions. While the present experimental precision in the measurement of the Higgs couplings still allows for considerable release of this tension, future measurements of the Higgs branching ratios with increased precision would lead to stringent constraints on this setup.
description: 23 pages, 12 figures (pdf), Further clarifications added in text, references updated, matches published version
Quantum Dynamics of Skyrmions in Chiral Magnets
Creators: name: Psaroudaki, Christina
name: Hoffman, Silas
name: Klinovaja, Jelena
name: Loss, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the quantum propagation of a Skyrmion in chiral magnetic insulators by generalizing the micromagnetic equations of motion to a finite-temperature path integral formalism, using field theoretic tools. Promoting the center of the Skyrmion to a dynamic quantity, the fluctuations around the Skyrmionic configuration give rise to a time-dependent damping of the Skyrmion motion. From the frequency dependence of the damping kernel, we are able to identify the Skyrmion mass, thus providing a microscopic description of the kinematic properties of Skyrmions. When defects are present or a magnetic trap is applied, the Skyrmion mass acquires a finite value proportional to the effective spin, even at vanishingly small temperature. We demonstrate that a Skyrmion in a confined geometry provided by a magnetic trap behaves as a massive particle owing to its quasi-one-dimensional confinement. An additional quantum mass term is predicted, independent of the effective spin, with an explicit temperature dependence which remains finite even at zero temperature.
description: 14 pages, 10 figures
The Illusion of Personalization: Quantifying Linguistic Diversity in Online Tutoring
Creators: name: Dieber, Jürgen
Publisher: name: Stanford Digital Repository
Year: 2024
Subjects: subject: Computational linguistics
subject: Online tutoring
subject: Linguistic behavior

description: Online tutoring, a practice integral to educational adaptability during the post-pandemic era, hinges on effective tutor-student interactions. This study investigates how tutors in virtual settings develop and diversify their language over time, contributing to a growing body of research on interpersonal communication within educational environments. By applying computational language measures to a dataset of online elementary literacy tutoring sessions, we quantify the evolution of linguistic diversity among tutors as they gain experience. Our research examines the development of tutors' linguistic diversity both across and within sessions, and how this diversity relates to the content of their discourse. Analysis of over 2,700 tutoring sessions reveals that tutors exhibit a variety of within-tutor linguistic diversity, with an overall decline over time, suggesting a trend towards more standardized language use. This reduction is more pronounced in off-task interactions compared to on-task instructional content. Furthermore, while between-tutor linguistic diversity remains consistently low, indicating similar communication styles across different tutors, high linguistic diversity within sessions is characterized by longer sentences and more personalized interactions. These findings shine light on incomplete understanding of tutor-student dynamics and of the role personalized communication plays on tutoring success.
Stability of receding traveling waves for a fourth order degenerate parabolic free boundary problem
Creators: name: Gnann, Manuel V.
name: Ibrahim, Slim
name: Masmoudi, Nader
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35K65, 35R35, 35K25, 35A09, 35B35, 76A20

description: Consider the thin-film equation $h_t + \left(h h_{yyy}\right)_y = 0$ with a zero contact angle at the free boundary, that is, at the triple junction where liquid, gas, and solid meet. Previous results on stability and well-posedness of this equation have focused on perturbations of equilibrium-stationary or self-similar profiles, the latter eventually wetting the whole surface. These solutions have their counterparts for the second-order porous-medium equation $h_t - (h^m)_{yy} = 0$, where $m > 1$ is a free parameter. Both porous-medium and thin-film equation degenerate as $h \searrow 0$, but the porous-medium equation additionally fulfills a comparison principle while the thin-film equation does not. In this note, we consider traveling waves $h = \frac V 6 x^3 + νx^2$ for $x \ge 0$, where $x = y-V t$ and $V, ν\ge 0$ are free parameters. These traveling waves are receding and therefore describe de-wetting, a phenomenon genuinely linked to the fourth-order nature of the thin-film equation and not encountered in the porous-medium case as it violates the comparison principle. The linear stability analysis leads to a linear fourth-order degenerate-parabolic operator for which we prove maximal-regularity estimates to arbitrary orders of the expansion in $x$ in a right-neighborhood of the contact line $x = 0$. This leads to a well-posedness and stability result for the corresponding nonlinear equation. As the linearized evolution has different scaling as $x \searrow 0$ and $x \to \infty$, the analysis is more intricate than in related previous works. We anticipate that our approach is a natural step towards investigating other situations in which the comparison principle is violated, such as droplet rupture.
description: 54 pages, revised version, minor changes and corrections, changed citation style to numbers
Ground states of Bose-Einstein condensates with higher order interaction
Creators: name: Bao, Weizhu
name: Cai, Yongyong
name: Ruan, Xinran
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q55, 35A01, 81Q99

description: We analyze the ground state of a Bose-Einstein condensate in the presence of higher-order interaction (HOI), modeled by a modified Gross-Pitaevskii equation (MGPE). In fact, due to the appearance of HOI, the ground state structures become very rich and complicated. We establish the existence and non-existence results under different parameter regimes, and obtain their limiting behaviors and/or structures with different combinations of HOI and contact interactions. Both the whole space case and the bounded domain case are considered, where different structures of ground states are identified.
description: 28 pages
Globalisierung und die Transformation des Parteienwettbewerbs in Österreich. Eine Analyse der Angebotsseite
Creators: name: Dolezal, Martin
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der vorliegende Beitrag beruht auf der These, dass die Globalisierung zu einer Rekonfiguration nationaler gesellschaftlicher Konfliktlagen führt. Untersucht wird dies anhand von Veränderungen des Parteienwettbewerbs in Österreich von 1975 bis 2002. Die thematischen Positionierungen der Parteien wurden durch eine quantitative Inhaltsanalyse der Wahlkampfberichterstattung in Printmedien gewonnen und mittels einer multidimensionalen Skalierung in einem politischen Raum dargestellt. Die Analyse zeigt den Wandel des Parteienwettbewerbs und die inhaltlichen Angebote der Parteien für GewinnerInnen und VerliererInnen der Globalisierung.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 34 Nr. 2 (2005): powi04 – Neue Impulse in der Politikwissenschaft
A model of neutrino mass and dark matter with large neutrinoless double beta decay
Creators: name: Alcaide, Julien
name: Das, Dipankar
name: Santamaria, Arcadi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a model where neutrino masses are generated at three loop order but neutrinoless double beta decay occurs at one loop. Thus we can have large neutrinoless double beta decay observable in the future experiments even when the neutrino masses are very small. The model receives strong constraints from the neutrino data and lepton flavor violating decays, which substantially reduces the number of free parameters. Our model also opens up the possibility of having several new scalars below the TeV regime, which can be explored at the collider experiments. Additionally, our model also has an unbroken $Z_2$ symmetry which allows us to identify a viable Dark Matter candidate.
description: Figure 4 updated with new NuFIT 3.2 (2018) data. Added references
Long-time coherence in fourth-order spin correlation functions
Creators: name: Fröhling, Nina
name: Anders, Frithjof B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the long-time decay of fourth-order electron spin correlation functions for an isolated singly charged semi-conductor quantum dot. The electron spin dynamics is governed by the applied external magnetic field as well as the hyperfine interaction. While the long-time coherent oscillations in the correlation functions can be understood within an semi-classical approach treating the Overhauser field as frozen, the field dependent decay of its amplitude reported in different experiments cannot be explained by the central-spin model indicating the insufficiency of such a description. By incorporating the nuclear Zeeman splitting and the strain induced nuclear-electric quadrupolar interaction, we find the correct crossover from a fast decay in small magnetic fields to a slow exponential asymptotic in large magnetic fields. It originates from a competition between the quadrupolar interaction inducing an enhanced spin decay and the nuclear Zeeman term that suppressed the spin-flip processes. We are able to explain the magnetic field dependency of the characteristic long-time decay time $T_2$ depending on the experimental setups. The calculated asymptotic values of $T_2 = 3 -4\,μ$s agree qualitatively well with the experimental data.
description: 13 pages, 9 figures
Transnational audiences and the reception of television news: a study of Mexicans in Los Angeles
Creators: name: Moreno-Esparza, Gabriel
Publisher: name: University of Westminster
Year: 2009

description: This doctoral contribution borrows from the discursive practices of transnationalism and diaspora in order to articulate the concept of "transnational audiences" in the United States. The project identifies transnational audiences as formed by individuals and families whose lives straddle two national territories. It draws on the traditions of cultural studies and reception analysis as a strategy to explore the relation between media use and novel experiences of migration in a context of contemporary globalization. This conceptual background is the result of empirical research conducted in Los Angeles which investigated the television news reception of 67 informants of Mexican origin during three months in 2006. Relying on a range of qualitative research methods based in the domestic settings of the participants, the project found high levels of interests across a variety of news occurring in Los Angeles, the US, Mexico and further afield. During interviews, television news-viewing sessions and in daily written accounts, respondents constantly conveyed the idea of being directly impacted by a wide variety of events and developments in the news, regardless of geographic proximity. Heightened sensitivity to realities unfolding in nearby and distant places, it will be argued, would be a result of transnational communities’ connections with different social, cultural, economic and political contexts. These links emerged in a variety of ways throughout the research activities. Notably, the interactions in which members of families engaged when discussing the news, revealed the re-articulation – and possible subversion – of patriarchal structures regulating relationships between males and females. At the same time, the research provides hints of a possible intertwining between the mediated and unmediated experiences of contributors to the study, who constantly informed their understanding of the news on the basis of interpersonal and mediated communication, knowledge of places and locations, and circumstances attached to opportunities and constraints related to aspects such as migration and citizen status. While in need of further systematization, this thesis’ findings are relevant for they highlight the need to operationalize the transnational audience in ways which differentiate it from those media publics who are based in their countries of origin. At the same time, this intervention highlights the need to question or move forward from established forms of thinking about the media use of non-native peoples in the developed world. The project as a whole opens a window to explore an alternative academic vocabulary to the notions of "ethnic" and "minority" audiences, privileged in US scholarly endeavour.
title: The Athenian Expedition to Sicily - The Reasons for its Failure
Creators: name: Randles, Steven
Publisher: name: University of Liverpool Repository
Year: 2024

description: This study considers anew the reasons for the failure of the Athenian Expedition to Sicily in 415. 
It begins with the premise that the venture could and should have been a success and examines 
why this did not turn out to be the case.
The study is effectively split into two halves. The first half examines aspects within Athenian 
society and democracy which impacted adversely upon the Expedition. An examination is made 
of groupings within society, based on age, class and wealth. A study of tensions between these 
groups is undertaken and an assessment is made as to whether these tensions formed fault lines with Athenian society which contributed to the failure of the Expedition. The Athenian 
democratic institutions are also examined and an assessment made on whether the day-to-day 
functioning of the democracy hindered the Expedition. Underpinning the first half of the study is 
a detailed examination of temporal measurement in Attica and how the Athenian calendar 
functioned. This study enables a more exact assessment of the time-line of the build-up to the 
expedition to be made, thus facilitating an examination of which groups within Athens held
positions of power and influence at key moments just prior to the Expedition.
A case study of the Mutilations of the Herms and the Profanations of the Mysteries then serves to 
highlight the tensions in Athenian society just prior to the Expedition.
The second half of the study examines the military and tactical failures during the Expedition 
itself. Nicias’ failure as a strategos is examined in detail, as is the impact of cavalry warfare on 
the Expedition.
My study reinforces the point that the Athenian Expedition to Sicily should have been a success. 
Athens’ catastrophic defeat was due to a series of serious tactical errors on the ground, 
compounded both by unreasonable interference from the democratic Assembly and by the 
impact of factions within Athens working to bring about the downfall of the Expedition to serve 
their own ends.
Dissipative Quantum Electromagnetics
Creators: name: Sha, Wei E. I.
name: Liu, Aiyin Y.
name: Chew, Weng Cho
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The dissipative quantum electromagnetics is introduced in a comprehensive manner as a field-matter-bath coupling problem. First, the matter is described by a cluster of Lorentz oscillators. Then the Maxwellian free field is coupled to the Lorentz oscillators to describe a frequency dispersive medium. The classical Hamiltonian is derived for such a coupled system, using Lorenz gauge and decoupled scalar and vector potential formulations. The classical equations of motion are derivable from the Hamiltonian using Hamilton equations. Then the Hamiltonian is quantized with all the pertinent variables with the introduction of commutators between the variables and their conjugate pairs. The quantum equations of motion can be derived using the quantum Hamilton equations. It can be shown that such a quantization scheme preserves the quantum commutators introduced. Then a noise bath consisting of simple harmonic oscillators is introduced and coupled to the matter consisting of Lorentz oscillators to induce quantum loss. Langevin source emerges naturally in such a procedure, and it can be shown that the results are consistent with the fluctuation dissipation theorem, and the quantization procedure of Welsch's group. The advantage of the present procedure is that no diagonalization of the Hamiltonian is necessary to arrive at the quantum equations of motion. Finally, we apply the quantization scheme to model spontaneous emission of a two-level polarized atom placed above a dielectric cylinder that supports a bound state in the continuum.
description: 16 page, 3 figure
The new modes of EU governance: Combining rationalism and constructivism in explaining voluntarist policy coordination in the EU
Creators: name: Paster, Thomas
Publisher: name: Austrian Journal of Political Science
Year: 2015

description: Die freiwillige Koordinierung nationaler Politikbereiche und der Vergleich von „Best Practice“ Modellen durch die „Offene Methode der Koordinierung“ (OMK) haben in den letzten Jahren eine intensive Debatte in der Politikwissenschaft ausgelöst. Kann die OMK innerstaatlichen Politikwandel fördern? Wenn ja, unter welchen Bedingungen? Dieser Artikel analysiert diese Frage aus theoretischer Perspektive, in dem eine rationalistische und eine konstruktivistische Perspektive verglichen und kombiniert werden. Aus rationalistischer Sicht werden konvergierende Akteurspräferenzen, der „Schatten der Hierarchie“, sowie „unterschiedliche Ermächtigung“ als zentrale Erklärungsfaktoren für paradigmatischen Politikwandel identifiziert. Aus konstruktivistischer Sicht wird die Bedeutung von kommunikativen und koordinativen Diskurs als Mechanismen der Überzeugung und der Wissensproduktion betont. Der Artikel schlägt eine komplementäre Kombination dieser beiden gegensätzlichen, jedoch nicht inkompatiblen, Ansätze vor und kommt, auf Basis der analysierten Faktoren, zu dem Schluss, dass die Wirkungseffizienz der OMK in der Praxis gering sein wird.
description: Austrian Journal of Political Science, Bd. 34 Nr. 2 (2005): powi04 – Neue Impulse in der Politikwissenschaft
MPEC 2024-Q74 : 2018 PE21
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Macroscopic non-classical state preparation via post-selection
Creators: name: Montenegro, Víctor
name: Coto, Raúl
name: Eremeev, Vitalie
name: Orszag, Miguel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Macroscopic mechanical qubits are fundamental both to test the classical-quantum boundary and present suitable candidates for quantum information processing. Motivated by these, we propose a feasible probabilistic scheme to generate an on-demand mechanical qubit, as well as Schrödinger's cat and Fock number states. In order to accomplish this proposal, we study an open dispersive spin-mechanical system in the absence of any external driving. The procedure is solely based on spin post-selection in the weak coupling regime. Through this scheme we demonstrate that the achieved superposition is closely related to the amplification of the mean values of the mechanical quadratures as they are associated to the maximum quantum coherence.
description: 7 pages (+ 2 pages in Appendix), 7 figures
Technologie als Quelle systemischer Transformationsprozesse: Implikationen für die Theoriediskussion im Fach Internationale Beziehungen
Creators: name: Fritsch, Stefan
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Obwohl Technologie viele Bereiche der internationalen Beziehungen/internationalen politischen Ökonomie entscheidend mitbeeinflusst, wird ihrer Rolle in den theoretischen Diskussionen nur wenig Aufmerksamkeit zuteil. Trotzdem sie für zahlreiche systemtransformierende Prozesse (Globalisierung/Transnationalisierung) mitverantwortlich zu machen ist, wird Technologie in der Regel als passives, exogenes und apolitisches Artefakt, das quasi von außen in das internationale System hineinwirkt, konzipiert. Stattdessen plädiert der Beitrag dafür, Technologie in ihren mannigfaltigen Erscheinungsformen und Auswirkungen als einen endogenen, sprich, systemimmanenten und politisch relevanten Faktor zu begreifen, der auch fest im internationalen System verhaftet ist und dort wirkt, parallel dazu und in zunehmendem Maße aber erst auf globaler Ebene hinsichtlich seiner systemischen Auswirkungen effizienter beeinflusst und (re)reguliert werden kann. Im Vordergrund des Beitrags steht der Versuch aufzuzeigen, inwiefern Ergebnisse sozialwissenschaftlicher Technikforschung (Technikphilosophie, Techniksoziologie, Technikgeschichte) Theoriediskussionen der Internationalen Beziehungen substantiell bereichern könnten.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 34 Nr. 2 (2005): powi04 – Neue Impulse in der Politikwissenschaft
Deep Learning for Tumor Classification in Imaging Mass Spectrometry
Creators: name: Behrmann, Jens
name: Etmann, Christian
name: Boskamp, Tobias
name: Casadonte, Rita
name: Kriegsmann, Jörg
name: Maass, Peter
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Motivation: Tumor classification using Imaging Mass Spectrometry (IMS) data has a high potential for future applications in pathology. Due to the complexity and size of the data, automated feature extraction and classification steps are required to fully process the data. Deep learning offers an approach to learn feature extraction and classification combined in a single model. Commonly these steps are handled separately in IMS data analysis, hence deep learning offers an alternative strategy worthwhile to explore. Results: Methodologically, we propose an adapted architecture based on deep convolutional networks to handle the characteristics of mass spectrometry data, as well as a strategy to interpret the learned model in the spectral domain based on a sensitivity analysis. The proposed methods are evaluated on two challenging tumor classification tasks and compared to a baseline approach. Competitiveness of the proposed methods are shown on both tasks by studying the performance via cross-validation. Moreover, the learned models are analyzed by the proposed sensitivity analysis revealing biologically plausible effects as well as confounding factors of the considered task. Thus, this study may serve as a starting point for further development of deep learning approaches in IMS classification tasks.
description: 10 pages, 5 figures
Benavides-Cabra et al - SD3 - Detailed stratigraphic column of Arrayán Alto section
Creators: name: Benavides Cabra, Cristian David
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370506
subject: Palaeontology (incl. palynology)
classificationCode: 370510
subject: Stratigraphy (incl. biostratigraphy, sequence stratigraphy and basin analysis)

description: Stratigraphic distribution of marine vertebrates of the Arcillolitas abigarradas Member (Paja Formation) from the Villa de Leiva – Sáchica - Sutamarchán region, Boyacá, Colombia
Cristian D. Benavides-Cabra ; María E. Páramo-Fonseca ; Héctor D. Palma-Castro ; José A. Narváez-Rincón ; Maria Paula Ramos-Clavijo

In this supplemental document we present the stratigraphic section of the Arrayán Alto locality, of
Sáchica, at a 1:200 scale divided into three segments, each presented individually and followed by
the conventions used. We also include a list of the samples referred to in the columns
Staatlichkeit als Konzept Innovationspotentiale feministischer Staatstheorie
Creators: name: Löffler, Marion
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Staatlichkeit ist ein sich selbst erklärender Ausdruck und wird gemeinhin auch verstanden. Bei genauerem Hinsehen zeigt sich aber, dass Staatlichkeit unterschiedliche Bedeutungen haben kann. Staatlichkeit steht häufig im Zusammenhang mit der Thematisierung von Transformationen, wobei gleichzeitig ein institutionell eng gefassten Staatsverständnisses zum Einsatz kommt. Am Beispiel des Netzwerkparadigmas wird erläutert, warum kritische Staatsbetrachtung in einem solchen begrifflichen Rahmenwerk unmöglich ist. Der Staat wird herrschaftstheoretisch neutralisiert. Um die herrschaftlichen Dimensionen des Staates zu benennen, ist es notwendig Staatlichkeit als Konzept kritisch aufzurüsten. Im zweiten Teil des Artikels werden einige Ansätze feministischer Staatsbetrachtung im Hinblick auf eine kritische Verwendung von Staatlichkeit vorgestellt. Mit der Integration der Kategorie Geschlecht in geschlechtsblinde Konzepte der Politikwissenschaft werden diese grundlegend verändert. Daher hält feministische Staatstheorie ein Innovationspotential bereit. Eine geschlechterkritische, konzeptionelle Fassung von Staatlichkeit überbrückt die Trennung von Staat und Gesellschaft, ohne die Herrschaftsdimensionen aus dem Blick zu verlieren.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 34 Nr. 2 (2005): powi04 – Neue Impulse in der Politikwissenschaft
Examining school improvement through the lenses of change and organizational learning: a multi-site case study
Creators: name: Severs, John R.
Publisher: name: No Publisher Supplied
Year: 2024

description: Public schools have experienced an endless cycle of reform aiming to improve student achievement. Despite the time, funding, and resources that have been expended, most school reforms have not been successful at manifesting and sustaining meaningful change. New Jersey’s latest attempt at school reform involved Regional Achievement Centers (RACs) that implemented supports and monitored progress of failing schools through teams working with designated schools. The purpose of this study was to examine how change manifested in schools that had exited RAC intervention, and whether those changes were sustained based on the tenets of change and organizational learning theories. Two main research questions guided the study: (1) How are RAC/CSN interventions manifested and sustained following a school’s exit from status after demonstrating improvement and implementing required changes? and (2) To what extent has organizational learning played a role in manifesting and sustaining changes initiated through State intervention? This multi-site case study involved two New Jersey public middle schools that had been designated as Focus Schools. Data were collected through participant interviews, State and school-generated documents. Participants included teachers and the principal from each school. Analysis was approached deductively. Findings from this study indicated that the reform focused on first-order changes that ignored school context, the school’s own capacity for learning, and school culture. This has resulted in change that is successfully initiated but is superficial and unsustainable. Changes that have been sustained were the result of school and district accountability or modified to fit school or classroom context. The role of organizational learning was minimal due to the schools’ current culture of accountability and theState’s proclivity for quick fixes and results over efforts to make these schools learning organizations. These findings can contribute to knowledge of school reform initiatives taken by the state or by schools. The ability for a school to learn can determine its fate as an effective organization; understanding that change is a process, not an event. Future reforms efforts by schools or the State should focus on nurturing a learning culture that can assist schools in becoming adaptable learning organizations capable of self-renewal.
Predicting Pairwise Relations with Neural Similarity Encoders
Creators: name: Horn, Franziska
name: Müller, Klaus-Robert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Matrix factorization is at the heart of many machine learning algorithms, for example, dimensionality reduction (e.g. kernel PCA) or recommender systems relying on collaborative filtering. Understanding a singular value decomposition (SVD) of a matrix as a neural network optimization problem enables us to decompose large matrices efficiently while dealing naturally with missing values in the given matrix. But most importantly, it allows us to learn the connection between data points' feature vectors and the matrix containing information about their pairwise relations. In this paper we introduce a novel neural network architecture termed Similarity Encoder (SimEc), which is designed to simultaneously factorize a given target matrix while also learning the mapping to project the data points' feature vectors into a similarity preserving embedding space. This makes it possible to, for example, easily compute out-of-sample solutions for new data points. Additionally, we demonstrate that SimEc can preserve non-metric similarities and even predict multiple pairwise relations between data points at once.
description: find code here: https://github.com/cod3licious/simec
Family policies in Western Europe. Fertility policies at the intersection of gender, employment and care policies
Creators: name: Neyer, Gerda
Publisher: name: Austrian Journal of Political Science
Year: 2015

description: Der Beitrag beschäftigt sich mit dem Zusammenhang zwischen Familienpolitik, Fertilität, Erwerbstätigkeit und Kinderbetreuung. Er demonstriert, dass ähnliche familienpolitische Maßnahmen unterschiedliche Wirkungen entfalten können und familienpolitische Maßnahmen nur im Kontext des Geschlechterverhältnisses, der jeweiligen Konfiguration des Wohlfahrtsstaates und der Beschäftigungsentwicklung analysiert werden können.
description: Austrian Journal of Political Science, Bd. 34 Nr. 1 (2005): Wahlrechtsentwicklung im internationalen Vergleich
Linear Response Theory and Optical Conductivity of Floquet Topological Insulators
Creators: name: Kumar, Abhishek
name: Rodriguez-Vega, Martin
name: Pereg-Barnea, Tamar
name: Seradjeh, Babak
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Floquet

description: Motivated by the quest for experimentally accessible dynamical probes of Floquet topological insulators, we formulate the linear response theory of a periodically driven system. We illustrate the applications of this formalism by giving general expressions for optical conductivity of Floquet systems, including its homodyne and heterodyne components and beyond. We obtain the Floquet optical conductivity of speciﬁc driven models, including two-dimensional Dirac material such as the surface of a topological insulator, graphene, and the Haldane model irradiated with circularly or linearly polarized laser, as well as semiconductor quantum well driven by an ac potential. We obtain approximateanalyticalexpressionsandperformnumericallyexactcalculationsoftheFloquetoptical conductivity in diﬀerent scenarios of the occupation of the Floquet bands, in particular the diagonal Floquet distribution and the distribution obtained after a quench. We comment on experimental signatures and detection of Floquet topological phases using optical probes.
Poisson geometry of PI 3-dimensional Sklyanin algebras
Creators: name: Walton, Chelsea
name: Wang, Xingting
name: Yakimov, Milen
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14A22, 16G30, 17B63, 81S10

description: We give the 3-dimensional Sklyanin algebras $S$ that are module-finite over their center $Z$ the structure of a Poisson $Z$-order (in the sense of Brown-Gordon). We show that the induced Poisson bracket on $Z$ is non-vanishing and is induced by an explicit potential. The ${\mathbb Z}_3 \times \Bbbk^\times$-orbits of symplectic cores of the Poisson structure are determined (where the group acts on $S$ by algebra automorphisms). In turn, this is used to analyze the finite-dimensional quotients of $S$ by central annihilators: there are 3 distinct isomorphism classes of such quotients in the case $(n,3) \neq 1$ and 2 in the case $(n,3)=1$, where $n$ is the order of the elliptic curve automorphism associated to $S$. The Azumaya locus of $S$ is determined, extending results of Walton for the case $(n,3)=1$.
description: v3: 29 pages + references. Includes changes per the referee's suggestions and other minor changes. To appear in the Proceedings of the London Mathematical Society
CoFFEE: Corrections For Formation Energy and Eigenvalues for charged defect simulations
Creators: name: Naik, Mit H.
name: Jain, Manish
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Charged point defects in materials are widely studied using Density Functional Theory (DFT) packages with periodic boundary conditions. The formation energy and defect level computed from these simulations need to be corrected to remove the contributions from the spurious long-range interaction between the defect and its periodic images. To this effect, the CoFFEE code implements the Freysoldt-Neugebauer-Van de Walle (FNV) correction scheme. The corrections can be applied to charged defects in a complete range of material shapes and size: bulk, slab (or two-dimensional), wires and nanoribbons. The code is written in Python and features MPI parallelization and optimizations using the Cython package for slow steps.
Öffentlichkeitsmobilisierung und partizipative Demokratie. Der österreichische (grüne) Gentechnikkonflikt
Creators: name: Götz, Rudolf
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der vorliegende Artikel strebt einen Diskursbeitrag zum Thema partizipative Demokratie – Öffentlichkeit und politische Partizipation an. Hinterfragt wird, ob auf Öffentlichkeitsmobilisierung basierende politische Partizipation durch zivilgesellschaftliche Akteure prinzipiell als Stärkung partizipativer Demokratie gewertet werden kann. Zur Adressierung dieser Fragestellung wird der öffentliche Konflikt um gentechnisch veränderte Organismen (GVOs) in Österreich analysiert. Die Analyse zeigt, dass öffentliche Mobilisierungen dieses Typus zur Öffnung des politischen Systems gegenüber Akteuren und Themen von „außerhalb“ beitragen können, jedoch auch die Gefahr in sich tragen, dass diese Öffnung einen exklusiven Charakter aufweist – einigen wenigen Akteuren vorbehalten bleibt.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 34 Nr. 1 (2005): Wahlrechtsentwicklung im internationalen Vergleich
Robust Weak Chimeras in Oscillator Networks with Delayed Linear and Quadratic Interactions
Creators: name: Bick, Christian
name: Sebek, Michael
name: Kiss, István Z.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present an approach to generate chimera dynamics (localized frequency synchrony) in oscillator networks with two populations of (at least) two elements using a general method based on delayed interactions with linear and quadratic terms. The coupling design yields robust chimeras through a phase-model-based design of the delay and the ratio of linear and quadratic components of the interactions. We demonstrate the method in the Brusselator model and experiments with electrochemical oscillators. The technique opens the way to directly bridge chimera dynamics in phase models and real-world oscillator networks.
Asymmetric broadcasting of quantum correlations
Creators: name: Jain, Aditya
name: Chakrabarty, Indranil
name: Chatterjee, Sourav
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work, we exhaustively investigate $1 \rightarrow 2$ local and nonlocal broadcasting of entanglement as well as correlations beyond entanglement (geometric discord) using asymmetric Pauli cloners with most general two qubit state as the resource. We exemplify asymmetric broadcasting of entanglement using Maximally Entangled Mixed States. We demonstrate the variation of broadcasting range with the amount of entanglement present in the resource state as well as with the asymmetry in the cloner. We show that it is impossible to optimally broadcast geometric discord with the help of these asymmetric Pauli cloning machines. We also study the problem of $1 \rightarrow 3$ broadcasting of entanglement using non-maximally entangled state (NME) as the resource. For this task, we introduce a method we call successive broadcasting which involves application of $1 \rightarrow 2$ optimal cloning machines multiple times. We compare and contrast the performance of this method with the application of direct $1 \rightarrow 3$ optimal cloning machines. We show that $1 \rightarrow 3$ optimal cloner does a better job at broadcasting than the successive application of $1 \rightarrow 2$ cloners and the successive method can be beneficial in the absence of $1 \rightarrow 3$ cloners. We also bring out the fundamental difference between the tasks of cloning and broadcasting in the final part of the manuscript. We create examples to show that there exist local unitaries which can be employed to give a better range for broadcasting. Such unitary operations are not only economical, but also surpass the best possible range obtained using existing cloning machines enabling broadcasting of lesser entangled states. This result opens up a new direction in exploration of methods to facilitate broadcasting which may outperform the standard strategies implemented through cloning transformations.
description: Edited sections, changed figures, to be published in Physical Review A
Mapping degrees between spherical $3$-manifolds
Creators: name: Gonçalves, Daciberg
name: Wong, Peter
name: Zhao, Xuezhi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55M20 (Primary), 20E45 (Secondary)

description: Let $D(M,N)$ be the set of integers that can be realized as the degree of a map between two closed connected orientable manifolds $M$ and $N$ of the same dimension. For closed $3$-manifolds with $S^3$-geometry $M$ and $N$, every such degree $deg f\equiv \overline{deg}ψ$ $(|π_1(N)|)$ where $0\le \overline{deg}ψ
description: 24 pages
Logarithmic coherence: Operational interpretation of $\ell_1$-norm coherence
Creators: name: Rana, Swapan
name: Parashar, Preeti
name: Winter, Andreas
name: Lewenstein, Maciej
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We show that the distillable coherence---which is equal to the relative entropy of coherence---is, up to a constant factor, always bounded by the $\ell_1$-norm measure of coherence (defined as the sum of absolute values of off diagonals). Thus the latter plays a similar role as logarithmic negativity plays in entanglement theory and this is the best operational interpretation from a resource-theoretic viewpoint. Consequently the two measures are intimately connected to another operational measure, the robustness of coherence. We find also relationships between these measures, which are tight for general states, and the tightest possible for pure and qubit states. For a given robustness, we construct a state having minimum distillable coherence.
description: V3: 6+5 pages, 2 figures. Published version
Overview of current electoral law developments in the United States
Creators: name: Hulsey, John
Publisher: name: Austrian Journal of Political Science
Year: 2015

description: Vier Jahre nach einer der knappsten und umstrittensten Wahlen in der Geschichte der USA waren die Wahlen zum Präsidenten, zum Senat und zum Repräsentantenhaus im November 2004 zwar ebenfalls von starken Auseinandersetzungen bestimmt, aber weit weniger dramatisch als 2000. Das knappe Wahlergebnis wie auch der Streit um die Stimmenzettel in Florida bei den Wahlen 2000 lösten eine Diskussion über das amerikanische Wahlrecht und Wahlverfahren aus. In der Folge kam es zu Änderungen des Wahlverfahrens und zu Debatten über eine Wahlreform in verschiedenen Bereichen. Dieser Artikel untersucht die umstrittensten Aspekte des amerikanischen Wahlrechts, beschreibt die Reformen der letzten Jahre und diskutiert weitere Änderungen. Der Schwerpunkt liegt auf Reformen im Bereich des Wahlverfahrens, des Wahlmännergremiums, der Wahlkampffinanzierung, der Wahlkreiseinteilung und von zeitlichen Beschränkungen der Amtszeiten. Ich komme zum Schluss, dass es in Zukunft nur zu kleineren Änderungen des Wahlsystems kommen wird, weil die politischen Eliten zurückhaltend sind und die Kompetenzen für derartige Änderungen vor allem in den Händen der Einzelstaaten liegen.
description: Austrian Journal of Political Science, Bd. 34 Nr. 1 (2005): Wahlrechtsentwicklung im internationalen Vergleich
Torsion contact forms in three dimensions have two or infinitely many Reeb orbits
Creators: name: Cristofaro-Gardiner, Dan
name: Hutchings, Michael
name: Pomerleano, Dan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53D10, 37C27

description: We prove that every nondegenerate contact form on a closed connected three-manifold, such that the associated contact structure has torsion first Chern class, has either two or infinitely many simple Reeb orbits. By previous results it follows that under the above assumptions, there are infinitely many simple Reeb orbits if the three-manifold is not the three-sphere or a lens space. We also show that for non-torsion contact structures, every nondegenerate contact form has at least four simple Reeb orbits.
description: 42 pages, minor corrections and expository improvements
Control of effective free energy landscape in a frustrated magnet by a field pulse
Creators: name: Wan, Yuan
name: Moessner, Roderich
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Thermal fluctuations can lift the degeneracy of a ground state manifold, producing a free energy landscape without accidentally degenerate minima. In a process known as order by disorder, a subset of states incorporating symmetry-breaking may be selected. Here, we show that such a free energy landscape can be controlled in a non-equilibrium setting as the slow motion within the ground state manifold is governed by the fast modes out of it. For the paradigmatic case of the classical pyrochlore XY antiferromagnet, we show that a uniform magnetic field pulse can excite these fast modes to generate a tunable effective free energy landscape with minima at thermodynamically unstable portions of the ground state manifold.
description: 10 pages, 6 figures; minor revisions
Developing young professionals after school: considering the social contexts of marginalized youth in an urban afterschool program
Creators: name: Blackwell, Jazzme Anin
Publisher: name: No Publisher Supplied
Year: 2024

description: The purpose of this study is to examine how and to what extent an afterschool program for marginalized youth assists in developing workforce readiness skills through a critical positive youth development (CPYD) framework that considers the social contexts of youth. There is little research on afterschool programs that prepare youth for the workforce, even less on such programs serving marginalized youth and the role that their social contexts play in programming. Because of this, we are limited in our understanding of whether and how these programs work to prepare this population for the workforce while also providing them with the support they need to navigate the obstacles they will face as a result of their socio-economic status. A qualitative case study design that employed CPYD, a twenty-first century skills learning framework, and performance pedagogy was used to explore the Winners Initiative of New Jersey, Young Professionals Academy (YPA), an afterschool program that serves primarily marginalized youth. The study sought to understand how this program operates from the perspective of program participants, past and present, and stakeholders via the collection of program artifacts, interviews, focus groups, and in “real-time” through observations. The sample included a total of twelve student participants and three adult staff and volunteers. The following research questions guided this study: 1. What is the pedagogy and curriculum of the program?1a. Does the program pedagogy and curriculum promote workforce skill development in its participants? If so, how?2. Does the program pedagogy and curriculum align with CPYD? If so, how?2a. In what ways does this alignment with CPYD help develop students while considering their social contexts? The findings from this study suggests that (1) workforce skills were developed through the program’s performance-based pedagogy and curriculum, namely, improvisation activities, (2) the core elements of the CPYD framework, such as supportive relationships and empowering roles, were intrinsic to the program’s pedagogy and curriculum, and (3) the program used elements of CPYD to address issues related to segregation, resource disparities, and stereotypes.