cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Forschendes Lernen in digitalen Teams
Creators: name: Schmohl
name: Iseke
name: Mücke
name: Dreyer
Publisher: name: Zenodo
Year: 2019
Subjects: Wissenschaftliches Arbeiten

description: Ziel des hier in Posterform skizzierten Vorhabens ist es, das Konzept des Forschenden Lernens in digitalen Teams anhand eines peer-review-basierten didaktischen Online-Tools umzusetzen. Wir greifen dabei auf eine Software zurück, die im Rahmen eines hochschuldidaktischen Verbundprojekts entwickelt wurde und die wir erstmalig in einem Studienkontext implementieren. Wir arbeiten dabei eng mit den Entwicklern der Software zusammen (BMBF-gefördertes Projekt FideS – Forschungsorientierung in der Studieneingangsphase) und schließen konzeptionell an den aktuellen wissenschaftlichen Diskurs an. Unser Anwendungskontext ist zunächst ein neues Modul zum wissenschaftlichen Arbeiten (BA-Studiengang „Wirtschaftswissen-schaften“, 4. Semester ~70 Studierende, 6 ECTS, erstmals angeboten im Sommersemester 2019). Darüber hinaus sind konkrete Übertragungen der Technologie auf andere Fachbereiche vorgesehen. Die weiterentwickelte Software stellen wir zusammen mit dem didaktischen Konzept und einer ausführlichen Dokumentation zum Einsatz in anderen Kontexten im Open-Access-Format bereit.
Investigation on low-temperature plasma nitriding under industry-related treatment conditions for rolling bearing components
Creators: name: Brückner, Tristan
name: Paschke, Hanno
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2022
Subjects: plasma
plasma nitriding

description: Agenda 1. Background 2. Thoughts on adequate investigations 3. Experimental methods 4. Results
title: ZAGHOUANE
title: ZAGHOUANE
title: Atlas archéologique de la Tunisie
Creators: name: Babelon, Ernest Charles François
name: Babelon, Ernest Charles François > Auteur
name: Cagnat, René Louis Victor > Auteur
name: Reinach, Salomon > Auteur
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Archéologie
subject: Antiquité
subject: Recherche archéologique
subject: Savoirs (Les)
subject: Cartographie
subject: Atlas
subject: Atlas archéologique

description: [Atlas archéologique de la Tunisie ; Edition spéciale des cartes topographiques publiées par la ministère de la Guerre, accompagnée d’un texte explicatif rédigé par E. Babelon, R. Cagnat et S. Reinach, membres de la Commission de l’Afrique du Nord (1ère série, 60 feuilles au 1/50 000 et notices)]
description: Atlas
description: Atlas-Archeo-Tunisie_038
description: 1/50 000
description: La Méditerranée à la carte
description: Paris
description: Source: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
description: Source: La Méditerranée à la carte
description: Source: La Méditerranée à la carte > Atlas archéologique de la Tunisie
description: Relation: https://cinumed.mmsh.univ-aix.fr/idurl/1/96209
description: Coverage: Tunisie
description: Coverage: Zaghouane
description: Coverage: XIXe siècle;XXe siècle
description: Temporal: XIXe siècle;XXe siècle
description: Provenance: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
A unified framework for heat and mass transport at the atomic scale
Creators: name: Ponga, M.
name: Sun, D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a unified framework to simulate heat and mass transport in systems of particles. The proposed framework is based on kinematic mean field theory and uses a phenomenological master equation to compute effective transport rates between particles without the need to evaluate operators. We exploit this advantage and apply the model to simulate transport phenomena at the nanoscale. We demonstrate that, when calibrated to experimentally-measured transport coefficients, the model can accurately predict transient and steady state temperature and concentration profiles even in scenarios where the length of the device is comparable to the mean free path of the carriers. Through several example applications, we demonstrate the validity of our model for all classes of materials, including ones that, until now, would have been outside the domain of computational feasibility.
Sustainable Blue Economy - Transformation, Wert und Potential der marinen Wirtschafts- und Ökosysteme
Creators: name: Biber, Antje
name: Knodt, Steffen
name: Visbeck, Martin
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2021

description: "Wir müssen sicherstellen, dass das Wachstum der Blue Economy auf eine regenerative Weise beschleunigt wird. Der Übergang zu einer Sustainable Blue Economy würde der Ernährungssicherheit, der menschlichen Gesundheit, unter entwickelten Gemeinschaften - und natürlich der Umwelt - zugutekommen." Alexandra Cousteau, Präsidentin und Mitbegründerin von Oceans 2050
La protección jurídica de niños y niñas reclutadas en Colombia desde el Derecho Internacional Humanitario
Creators: name: Rodríguez Martínez, Angie
Publisher: name: Universidad Externado de Colombia.
Year: 2022
Subjects: subject: Reclutamiento - Colombia
subject: Niños (Derecho internacional)
subject: Conflicto armado - Colombia
subject: Reclutamiento
subject: Derecho Internacional Humanitario
subject: Niños
subject: Conflicto armado

description: Durante décadas, el uso y reclutamiento de niños, niñas y adolescentes por las partes a conflictos armados ha sido una preocupación de múltiples actores del ámbito internacional y, por tanto, objeto de prolíferos desarrollos normativos en el derecho internacional público. Pese a ello, actualmente el uso y reclutamiento sigue afectando a miles de niñas y niños en todo el mundo, por distintas causas. Tanto el Derecho Internacional Humanitario como los Derechos Humanos se han ocupado del asunto a través de diversos instrumentos convencionales y de soft law que promueven el respeto y la protección de la niñez durante los conflictos armados. En Colombia, dicha problemática también ha sido objeto de estudio por parte de legisladores y Cortes, que han adaptado la normatividad internacional al contexto local. Este artículo, luego de revisar el estado normativo del uso y reclutamiento de niños y niñas en el derecho internacional público, analizará la implementación dichos estándares en el ordenamiento jurídico colombiano y hará un breve análisis del problema hacia la integración de estándares adicionales a nivel de la ley y política internas.
description: For decades, the use and recruitment of children by parties to armed conflicts, has been a topic of concern for multiple actors in international law. Therefore, it has been the object of prolific normative developments in public international law. Despite that, nowadays, child recruitment continues to affect thousands of girls and boys around the world. Both International Humanitarian Law and International Human Rights Law have dealt with the subject through various instruments that promote the respect and protection of children during armed conflicts. In Colombia, this issue has been studied by legislators and Courts which have adapted international regulations to the local context. This article, after reviewing the normative status of the use and recruitment of children in public international law, will analyze the implementation of these standards in the Colombian domestic legal system and will make a brief problem-analysis towards the integration of additional standards into domestic law and policy.
Breitband-Monitoring für die Schadensidentifikation von Axialkolbenpumpen
Creators: name: Gnepper, Oliver
name: Enge-Rosenblatt, Olaf
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2023

description: In dieser Arbeit wird ein Verfahren zur Identifikation von Schäden an Axialkolbenpumpen mit-tels breitbandiger Schadensindikatoren vorgestellt. Die Leistungsfähigkeit dieses Ansatzes wird anhand eines Datensatzes mit drei unterschiedlichen Schadenstypen mit bis zu vier Schadensstufen sowie 96 Betriebszuständen nachgewiesen. Zudem wird durch die Verwendung von zwei Sensortypen an jeweils drei Positionen die Übertragbarkeit des Ansatzes de-monstriert. Anhand von Daten aus einem vorab separierten Betriebsbereich der Pumpe wird gezeigt, dass die Rate der Fehlklassifikationen mit diesem Verfahren bei passender Wahl der Sensorposition, des Sensortyps und ausreichend hoher Abtastrate ca. 0,1 % beträgt.
A Heuristic Proof Procedure for First-Order Logic
Creators: name: Kwon, Keehang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Inspired by the efficient proof procedures discussed in {\em Computability logic} \cite{Jap03,Japic,Japfin}, we describe a heuristic proof procedure for first-order logic. This is a variant of Gentzen sequent system and has the following features: (a)~ it views sequents as games between the machine and the environment, and (b)~ it views proofs as a winning strategy of the machine. From this game-based viewpoint, a poweful heuristic can be extracted and a fair degree of determinism in proof search can be obtained. This article proposes a new deductive system LKg with respect to first-order logic and proves its soundness and completeness. We also discuss LKg', a variant of LKg with some optimizations added.
description: 6 pages. Some optimizations are added
Institutions and Female Empowerment: The Impact of Village Governance Reforms in Rural India
Creators: name: Di Franco, Michele
Publisher: name: My University
Year: 2019

description: In 1993, the 73rd amendment to the Indian constitution was passed, which entrenched the Panchayati Raj system into the constitution. The Panchayati Raj system is a government structure whereby villages are governed by small village councils rather than a centralized, national government. The 73rd amendment included a set of quotas, one of which required that one-third of members elected to these village councils must be women. Starting in 2005, some Indian states began passing legislation that raised the quota of elected women to one-half. I exploit variation in the implementation of the one-half gender quota to see if there are any effects on female development outcomes. Using a difference-in-differences framework, I provide evidence that raising the quota from one-third to one-half increases female empowerment, as measured by the number of management decisions women are responsible for making on farms. However, household consumption of “male” and “female” goods does not change in response to raising the quota.
What makes residents of Canada happy? Determinants of life satisfaction in Canada
Creators: name: Wang, Ruochen
Publisher: name: My University
Year: 2020

description: This study investigates the determinants of happiness in Canada in the years 2006, 2010, and 2016 by relying on the 2006 General Social Survey (GSS) Cycle 20, the 2011 General Social Survey (GSS) Cycle 25 and the 2016 General Social Survey (GSS) Cycle 30. It contributes to the literature by employing ordered probit models consisting of a set of individual characteristics and socioeconomic characteristics. This paper suggests that good health, marriage, participation in religion, and household income have a significantly positive effect on human beings’ happiness. Some other interesting findings are that the relationship between age and happiness behaves like a “U” shape, that females in Canada are happier than males, and residents of Ontario are the least satisfied with life in general compared with residents living in other provinces.
Restricciones en el acceso y goce efectivo del derecho a la propiedad colectiva de las comunidades negras del Departamento del Chocó
Creators: name: Robledo Rentería, Andy
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Zonas rurales
subject: Derechos humanos
subject: Composición étnica
subject: Comunidad negra
subject: Pueblo tribal
subject: Propiedad colectiva
subject: Posesión ancestral
subject: Territorio ancestral
subject: Adjudicación Estatal

description: El Estado Colombiano en el reconocimiento de los derechos de las comunidades negras, parte de la designación de sus territorios como “tierras baldías”, autoproclamándose como su propietario y desconociendo de esta forma los siglos de ocupación ancestral. De conformidad con lo anterior el derecho a la propiedad colectiva se fundamentaría en una dádiva o adjudicación estatal y no en los siglos de posesión ancestral. Es por ello, que aquí se tratará de establecer como se fue abandonando paulatinamente esta visión constitucional limitada, dando paso al reconocimiento del negro como miembro de un grupo diferenciado (Pueblo Tribal)3 y sujeto de medidas especiales de protección; siendo esta es una óptica más amplia y garantista de la cosmovisión del negro, permitiendo de este modo el reconocimiento constitucional a las comunidades asentadas en centros urbanos.
description: The Colombian State, in the recognition of the rights of black communities, starts from the designation of their territories as "wastelands", proclaiming itself as their owner and thus ignoring the centuries of ancestral occupation. In accordance with the above, the right to collective property would be based on a gift or state award and not on centuries of ancestral possession. That is why, here we will try to establish how this limited constitutional vision was gradually abandoned, giving way to the recognition of the black as a member of a differentiated group (Tribal People) and subject to special protection measures; this being a broader and guarantor optic of the black worldview, thus allowing constitutional recognition to communities settled in urban centers.
Safe and recyclable lightweight battery solutions
Creators: name: Löffler, David
name: Schmerler, Rico
name: Fritsch, Christian
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2022
Subjects: Electric mobility
SMC
aluminum foam
automotive lightweight
thermal management
integral production

description: In the presentation, solutions for lightweight battery housing designs that include active cooling concepts, self-supporting actively and passively cooled battery modules, and approaches for sustainable module design will be presented. These solutions are realized using a combination of aluminum foam, phase-change-material and fiber reinforced plastics, among others. An insight into the results of various research projects will be provided.
Effect of graphene grating coating on near-field radiative heat transfer
Creators: name: Luo, Minggang
name: Jeyar, Youssef
name: Guizal, Brahim
name: Zhao, Junming
name: Antezza, Mauro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work we analyze the near-field radiative heat transfer (NFRHT) between finite-thickness planar fused silica slabs coated with graphene gratings. We go beyond the effective medium approximation by using an exact Fourier Modal Method (FMM) equipped with specific Local Basis Functions (LBF), and this is needed for realistic experimental analysis. In general, coating a substrate with a full graphene sheet has been shown to decrease the NFRHT at short separations (typically for d<100 nm) compared to the bare substrates, where the effective medium approximation consistently overestimates the radiative heat flux, with relative errors exceeding 50%. We show that, by patterning the graphene sheet into a grating, the topology of the plasmonic graphene mode changes from circular to hyperbolic, allowing to open more channels for the energy transfer between the substrates. We show that, at short separations, the NFRHT between slabs coated with graphene gratings is higher than that between full-graphene-sheet coated slabs and also than that between uncoated ones. We show a significant dependence of the radiative heat transfer on the chemical potential, which can be applied to modulate in situ the scattering properties of the graphene grating without any geometric alterations. We also compare the exact calculation with an approximate additive one and show that this approximation performs quite well for low chemical potentials. This work has the potential to unveil new avenues for harnessing non-additive heat transfer effects in graphene-based nanodevices.
description: 6 pages, 5 figures
Non-commutative massive unquenched ABJM
Creators: name: Bea, Yago
name: Jokela, Niko
name: Pönni, Arttu
name: Ramallo, Alfonso V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study non-commutative massive unquenched Chern-Simons matter theory using its gravity dual. We construct this novel background by applying a TsT-transformation on the known parent commutative solution. We discuss several aspects of this solution to the Type IIA supergravity equations of motion and, amongst others, check that it preserves ${\cal N}=1$ supersymmetry. We then turn our attention to applications and investigate how dynamical flavor degrees of freedom affect numerous observables of interest. Our framework can be regarded as a key step towards the construction of holographic quantum Hall states on a non-commutative plane.
description: 41 pages, 14 figures; v2: ref. added, typos corrected
A Time Efficient Delaunay Refinement Algorithm
Creators: name: Miller, Gary L.
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: In this paper we present a Delaunay refinement algorithm for generating good aspect ratio and optimal size triangulations. This is the first algorithm known to have sub-quadratic running time. The algorithm is based on the extremely popular Delaunay refinement algorithm of Ruppert. We know of no prior refinement algorithm with an analyzed subquadratic time bound. For many natural classes of meshing problems, our time bounds are comparable to know bounds for quadtree methods.
Odd-frequency pairing and Kerr effect in the heavy-fermion superconductor UPt$_3$
Creators: name: Triola, Christopher
name: Black-Schaffer, Annica M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the emergence of odd-frequency superconducting pairing in UPt$_3$. Starting from a tight-binding model accounting for the nonsymmorphic crystal symmetry of UPt$_3$ and assuming an order parameter in the $E_{2u}$ representation, we demonstrate that odd-frequency pairing arises very generally, as soon as inter-sublattice hopping or spin-orbit coupling is present. We also show that in the low temperature superconducting $B$ phase, the presence of a chiral order parameter together with spin-orbit coupling, leads to additional odd-frequency pair amplitudes not present in the $A$ or $C$ phases. Furthermore, we show that a finite Kerr rotation in the $B$ phase is only present if odd-$ω$ pairing also exists.
description: 8 pages, 2 figures
Higher-order asymptotic normality of approximations to the modified signed likelihood ratio statistic for regular models
Creators: name: He, Heping
name: Severini, Thomas A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F05 (Primary) 62F03 (Secondary)

description: Approximations to the modified signed likelihood ratio statistic are asymptotically standard normal with error of order $n^{-1}$, where $n$ is the sample size. Proofs of this fact generally require that the sufficient statistic of the model be written as $(\hatθ,a)$, where $\hatθ$ is the maximum likelihood estimator of the parameter $θ$ of the model and $a$ is an ancillary statistic. This condition is very difficult or impossible to verify for many models. However, calculation of the statistics themselves does not require this condition. The goal of this paper is to provide conditions under which these statistics are asymptotically normally distributed to order $n^{-1}$ without making any assumption about the sufficient statistic of the model.
description: Published in at http://dx.doi.org/10.1214/009053607000000307 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Estado empresario y su efecto amplificador en la organización administrativa: las filiales de empresas estatales o mixtas como entidades descentralizadas indirectas
Creators: name: Santaella Cuberos, María Juliana
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Empresas estatales
subject: Derecho administrativo - Colombia
subject: Descentralización administrativa - Colombia
subject: Conceptualización de las entidades descentralizadas indirectas y características
subject: Aspectos relevantes de la creación y control de las filiales de empresas estatales o mixtas y su desarrollo jurisprudencial
subject: Grupos empresariales y globalización: el modelo adoptado por Ecopetrol y la idea-realidad de “entidades descentralizadas de tercer grado

description: El texto realiza un análisis del modelo actual de las entidades descentralizadas indirectas, su creación y control. Además plantea una idea de nuevas entidades descentralizadas y su pertinencia o no para el derecho administrativo colombiano.
Coherent dynamics in cavity femtochemistry: application of the multi-configuration time-dependent Hartree method
Creators: name: Vendrell, Oriol
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The photochemistry of a molecular ensemble coupled to a resonance cavity and triggered by a femtosecond laser pulse is investigated from a real-time, quantum dynamics perspective with the multi-configuration time-dependent Hartree method. Coherent excitation of a superposition of electronic states in the ensemble leads to superradiant energy transfer to the cavity characterized by quadratic scaling with the number of molecules. Electronic decoherence associated with loss of nuclear wave packet overlap among those states destroys superradiant energy transfer, returning to a linear regime. For equal pump laser conditions, the photoexcitation probability per molecule decreases with increase of the number of molecules inside the cavity. This is caused by a loss of resonance condition of the laser with the bright electronic-photonic states of the coupled cavity-ensemble system. Increase of the laser bandwidth restores the energy transferred per molecule and the trigger probability remains independent of the number of molecules in the cavity.
description: 13 pages, 9 figures; own accepted version
Den digitalen Wandel gestalten
Creators: name: Hieber, Nina
name: Kutz, Janika
name: Martinetz, Simone
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2024
Subjects: Digitalisierung
Agile Projektlandschaft
Change Management
Innovation
Automobilbranche
Leitfaden

description: Die zunehmende Digitalisierung hat eine agile und dynamische Projektlandschaft geschaffen, die herkömmliche Change Managementansätze vor neue Herausforderungen stellt. In Zeiten des raschen Wandels und der kontinuierlichen Innovation erweisen sich traditionelle Konzepte und Methoden als weniger effektiv. Der Leitfaden integrierte theoretische Konzepte mit praktischem Erfahrungswissen aus einem Digitalisierungsprojekt in der Automobilbranche und stellt konkrete Maßnahmen und Empfehlungen für eine erfolgreiche Umsetzung vor.
A Theory of Learning with Similarity Functions
Creators: name: Maria-Florina  Balcan
name: Avrim  Blum
name: Srebro, Nathan
Publisher: name: Carnegie Mellon University
Year: 1973
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Kernel functions have become an extremely popular tool in machine learning, with an attractive theory as well. This theory views a kernel as implicitly mapping data points into a possibly very high dimensional space, and describes a kernel function as being good for a given learning problem if data is separable by a large margin in that implicit space. However, while quite elegant, this theory does not necessarily correspond to the intuition of a good kernel as a good measure of similarity, and the underlying margin in the implicit space usually is not apparent in “natural” representations of the data. Therefore, it may be difficult for a domain expert to use the theory to help design an appropriate kernel for the learning task at hand. Moreover, the requirement of positive semi-definiteness may rule out the most natural pairwise similarity functions for the given problem domain. In this work we develop an alternative, more general theory of learning with similarity functions (i.e., sufficient conditions for a similarity function to allow one to learn well) that does not require reference to implicit spaces, and does not require the function to be positive semi-definite (or even symmetric). Instead, our theory talks in terms of more direct properties of how the function behaves as a similarity measure. Our results also generalize the standard theory in the sense that any good kernel function under the usual definition can be shown to also be a good similarity function under our definition (though with some loss in the parameters). In this way, we provide the first steps towards a theory of kernels and more general similarity functions that describes the effectiveness of a given function in terms of natural similarity-based properties.
Supplementary information
Creators: name: Li, Jiasui
name: Majzoub, Marwan E
name: Marzinelli, Ezequiel M
name: Dai, Zhicong
name: Thomas, Torsten
name: Egan, Suhelen
Publisher: name: figshare
Year: 2021
Subjects: subject: 60504 Microbial Ecology
subject: FOS: Biological sciences

description: Supplementary information
Adding attention to the neural ordinary differential equation for spatio-temporal prediction
Creators: name: Wang, Peixiao
name: Zhang, Tong
name: Zhang, Hengcai
name: Cheng, Shifen
name: Wang, Wangshu
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Explainable spatio-temporal prediction gains attraction in the development of geospatial artificial intelligence. The neural ordinal differential equation (NODE) emerges as a new solution for explainable spatio-temporal prediction. However, challenges still need to be solved in most existing NODE-based prediction models, such as difficulty modeling spatial data and mining long-term temporal dependencies in data. In this study, we propose a spatio-temporal attentional NODE (STA-ODE) to address the two challenges above. First, we define a spatio-temporal ordinary differential equation to predict a value at each time iteratively by a novel spatio-temporal derivative network. Second, we develop an attention mechanism to fuse multiple prediction values for capturing long-term temporal dependencies in data. To train the STA-ODE model, we design a loss function that aligns the prediction results in spatial dimension with prediction results in temporal dimension to calibrate the parameters of the model. The proposed model was validated with three real-world spatio-temporal datasets (traffic flow dataset, PM2.5 monitoring dataset, and temperature monitoring dataset). Experimental results showed that STA-ODE outperformed seven existing baselines regarding prediction accuracy. In addition, we used visualization to demonstrate the sound interpretability and prediction accuracy of the STA-ODE model.
Particle detector models from path integrals of localized quantum fields
Creators: name: Torres, Bruno de S. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the Schwinger-Keldysh path integral, we draw a connection between localized quantum field theories and more commonly used models of local probes in Relativistic Quantum Information (RQI). By integrating over and then tracing out the inaccessible modes of the localized field being used as a probe, we show that, at leading order in perturbation theory, the dynamics of any finite number of modes of the probe field is exactly that of a finite number of harmonic-oscillator Unruh-DeWitt (UDW) detectors. The equivalence is valid for a rather general class of input states of the probe-target field system, as well as for any arbitrary number of modes included as detectors. The path integral also provides a closed-form expression which gives us a systematic way of obtaining the corrections to the UDW model at higher orders in perturbation theory due to the existence of the additional modes that have been traced out. This approach vindicates and extends a recently proposed bridge between detector-based and field-theory-based measurement frameworks for quantum field theory [T. R. Perche et al., Particle detectors from localized quantum field theories, Phys. Rev. D 109, 045013 (2024)], and also points to potential connections between particle detector models in RQI and other areas of physics where path integral methods are more commonplace -- in particular, the Wilsonian approach to the renormalization group and effective field theories.
description: 18 + 3 pages, 2 appendices. RevTeX 4.2. V4 updated to match published version
Students’ experiences in EFL remote classes during the covid pandemic
Creators: name: Quiñones Ardila, Andrea Carolina
Publisher: name: Universidad Externado de Colombia
Year: 2023
Subjects: subject: Investigación cualitativa
subject: Aprendizaje - Educación
subject: Personal docente - Enseñanza
subject: Narrative
subject: Student’s perceptions
subject: Remote synchronous EFL classes
subject: Covid-19 lockdown

description: Ésta es una investigación narrativa, cualitativa, alineada con el paradigma sociocrítico, trabajando con las narrativas de los estudiantes, relacionadas con sus percepciones en clases de inglés como lengua extranjera en presencialidad remota durante la cuarentena por Covid-19. Se llevó a cabo con 10 estudiantes adolescentes de una clase conversacional en el Instituto de Lenguas de la Universidad Industrial de Santander. Los instrumentos empleados para recolectar los datos fueron un cuestionario, una reflexión escrita, y una entrevista a profundidad. Los hallazgos sugieren que los estudiantes están satisfechos con la manera en la que se llevaron a cabo las clases de inglés en presencialidad remota, como plan de contingencia para dar continuidad al proceso de aprendizaje del inglés como lengua extranjera, aunque prefieren clases presenciales en el campus. Ellos enlistaron los retos y dificultades que experimentaron, siendo los inconvenientes técnicos los más comunes. Además, mencionaron las maneras en las cuales estos desafíos se solventaron. Desde este estudio, se recomienda que los estudiantes obtengan las herramientas necesarias para estar más conscientes de su proceso de aprendizaje del inglés como lengua extranjera, y así puedan reflexionar sobre este, más allá de estar satisfechos con obtener buenas notas, o ser promovidos al siguiente nivel.
description: This qualitative narrative research, aligned with the socio-critical paradigm, in which students’ narratives regarding their perceptions on synchronous Remote EFL classes during the Covid-19 pandemic and lockdown are reviewed and analyzed. It was conducted with 10 teenager students from a conversational class at the Languages institute at Universidad Industrial de Santander. Questionnaire, written reflections, and an in-depth interview were the data collection instruments used. Findings suggest that students are satisfied with the way in which remote synchronous EFL classes were conducted as a contingency plan to provide continuity to the EFL learning process, although they prefer face-to-face classes at the campus. They listed the challenges they faced, being technical issues the most common ones, Besides, they mentioned the ways in which those issues were overcome. From this study it is recommendable that students get the needed tools to become more aware of their EFL learning process, so they can reflect on it beyond being satisfied with getting good scores and being promoted to the next level.
Greybody Factors for Rotating Black Holes on Codimension-2 Branes
Creators: name: Chen, Songbai
name: Wang, Bin
name: Su, Ru-Keng
name: Hwang, W. -Y Pauchy
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the absorption probability and Hawking radiation of the scalar field in the rotating black holes on codimension-2 branes. We find that finite brane tension modifies the standard results in Hawking radiation if compared with the case when brane tension is completely negligible. We observe that the rotation of the black hole brings richer physics. Nonzero angular momentum triggers the super-radiance which becomes stronger when the angular momentum increases. We also find that rotations along different angles influence the result in absorption probability and Hawking radiation. Compared with the black hole rotating orthogonal to the brane, in the background that black hole spins on the brane, its angular momentum brings less super-radiance effect and the brane tension increases the range of frequency to accommodate super-radiance. These information can help us know more about the rotating codimension-2 black holes.
description: 16 pages, 7 figures, minor modification, accepted for publication in JHEP
A note on the Near Flat Limit for strings in the Maldacena-Nunez background
Creators: name: Kreuzer, M.
name: Mayrhofer, C.
name: Rashkov, R. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently Maldacena and Swanson suggested a new limit of string theory on the $AdS_5\times S^5$ background, the so called near flat space limit. The resulting reduced theory interpolates between the pp-wave limit and giant magnon type string solutions. It was shown that the reduced model possess many features of the original theory. On the other hand, theories with less supersymmetry are of great importance for the string/gauge theory correspondence. In this paper we study the near flat limit reduction of string theory on the Maldacena-Nunez background, which is dual to $\N=1$ Yang-Mills theory. The reduced model interpolates between the pp-wave limit and a certain magnon type subsector of the theory. The similarity of the structures of the reduced model obtained here and that by Maldacena and Swanson indicates the possibility of existence of integrable subsectors of strings on the Maldacena-Nunez background.
description: 1+23 pages, introduction improved and clarifying comments added, references added, results remain unchanged
Characterising Open Clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution
Creators: name: Cantat-Gaudin, T.
name: Vallenari, A.
name: Sordo, R.
name: Pensabene, F.
name: Krone-Martins, A.
name: Moitinho, A.
name: Jordi, C.
name: Casamiquela, L.
name: Balaguer-Núnez, L.
name: Soubiran, C.
name: Brouillet, N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Tycho-Gaia Astrometric Solution (TGAS) subset of the first Gaia catalogue contains an unprecedented sample of proper motions and parallaxes for two million stars brighter than G~12 mag. We take advantage of the full astrometric solution available for those stars to identify the members of known open clusters and compute mean cluster parameters using either TGAS or UCAC4 proper motions, and TGAS parallaxes. We apply an unsupervised membership assignment procedure to select high probability cluster members, we use a Bayesian/MCMC technique to fit stellar isochrones to the observed 2MASS JHK$_s$ magnitudes of the member stars and derive cluster parameters (age, metallicity, extinction, distance modulus), and we combine TGAS data with spectroscopic radial velocities to compute full Galactic orbits. We obtain mean astrometric parameters (proper motions and parallaxes) for 128 clusters closer than about 2 kpc, and cluster parameters from isochrone fitting for 26 of them located inside 1 kpc from the Sun. We show the orbital parameters obtained from integrating 36 orbits in a Galactic potential.
Maßnahmen für energiesparendes Verhalten im Wohnsektor
Creators: name: Khanna, Tarun
name: Miersch, Klaas
name: Creutzig, Felix
name: Meyer, Robert
name: Karras, Jana
name: Reeh, Greta
name: Minx, Jan
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2021
Subjects: Energieeffizienz
Occupant behavior
Residential buildings
User Behaviour
Wärmewende

description: Wasserstoff rückt in der Diskussion um die Transformation des Energiesystems immer stärker in den Vordergrund. Doch welche Rolle kann Wasserstoff im Gebäudesektor tatsächlich spielen? Die vorliegende Analyse soll einen Beitrag zur Versachlichung des Diskurses über den perspektivischen Einsatz von Wasserstoff zur Defossilisierung des Gebäudesektors liefern, denn verschiedene Institutionen und Verbände bewerten diesen teilweise sehr unterschiedlich. In dieser Analyse geben wir Überblick über verschiedene Herstellungsverfahren von Wasserstoff, mögliche Einsatzbereiche im Gebäudesektor und den jeweiligen technischer Entwicklungsstand. Anhand von Fallbeispielen für Alt- und Neubau nehmen wir zudem einen Kostenvergleich vor. Das Fazit: Im Vergleich lassen sich keine wirtschaftlichen Vorteile für den Einsatz von Wasserstoff gegenüber einer Luft-Wasser-Wärmepumpe nachweisen. Auch Szenarienanalysen zeigen, dass Wasserstoff lediglich einen untergeordneten Beitrag zum Erreichen der Klimaneutralität im Gebäudebereich leisten kann. Der Einsatz ist dabei eher im Bereich der Fernwärmeerzeugung zu erwarten und mit einem netz- bzw. systemdienlichen Einsatz zur Entlastung und Stabilisierung der Stromnetze, wie er besonders durch Kraft-Wärme-Koppelung (KWK) bzw. Brennstoffzellen ermöglicht wird, statt durch ökonomische Vorteile für Haushalte zu begründen.
Machine learning in APOGEE: Unsupervised spectral classification with $K$-means
Creators: name: Garcia-Dias, Rafael
name: Prieto, Carlos Allende
name: Almeida, Jorge Sánchez
name: Ordovás-Pascual, Ignacio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The data volume generated by astronomical surveys is growing rapidly. Traditional analysis techniques in spectroscopy either demand intensive human interaction or are computationally expensive. In this scenario, machine learning, and unsupervised clustering algorithms in particular offer interesting alternatives. The Apache Point Observatory Galactic Evolution Experiment (APOGEE) offers a vast data set of near-infrared stellar spectra which is perfect for testing such alternatives. Apply an unsupervised classification scheme based on $K$-means to the massive APOGEE data set. Explore whether the data are amenable to classification into discrete classes. We apply the $K$-means algorithm to 153,847 high resolution spectra ($R\approx22,500$). We discuss the main virtues and weaknesses of the algorithm, as well as our choice of parameters. We show that a classification based on normalised spectra captures the variations in stellar atmospheric parameters, chemical abundances, and rotational velocity, among other factors. The algorithm is able to separate the bulge and halo populations, and distinguish dwarfs, sub-giants, RC and RGB stars. However, a discrete classification in flux space does not result in a neat organisation in the parameters space. Furthermore, the lack of obvious groups in flux space causes the results to be fairly sensitive to the initialisation, and disrupts the efficiency of commonly-used methods to select the optimal number of clusters. Our classification is publicly available, including extensive online material associated with the APOGEE Data Release 12 (DR12). Our description of the APOGEE database can enormously help with the identification of specific types of targets for various applications. We find a lack of obvious groups in flux space, and identify limitations of the $K$-means algorithm in dealing with this kind of data.
description: 23 pages, 24 images and online material
Neighbors' Income, Public Goods and Well-Being
Creators: name: Brodeur, Abel
name: Flèche, Sarah
Publisher: name: My University
Year: 2017
Subjects: neighbors' income
public goods
amenities
relative deprivation
well-being

description: How does neighbors' income affect individual well-being? Our analysis is based on rich US local data from the Behavioral Risk Factor Surveillance System, which contains information on where respondents live and their self-reported well-being. We find that the effect of neighbors' income on individuals' self-reported well-being varies with the size of the neighborhood included. In smaller areas such as ZIP codes, we find a positive relationship between median income and individuals' life satisfaction, whereas it is the opposite at the county, MSA and state levels. We provide evidence that local public goods and local area characteristics such as unemployment, criminality and poverty rates drive the association between satisfaction and neighbors' income at the ZIP code level. The neighbors' income effects are mainly concentrated among poorer individuals and are as large as one-quarter the effect of own income on self-reported well-being.
Determinant Monte Carlo algorithms for dynamical quantities in fermionic systems
Creators: name: Moutenet, Alice
name: Wu, Wei
name: Ferrero, Michel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce and compare three different Monte Carlo determinantal algorithms that allow one to compute dynamical quantities, such as the self-energy, of fermionic systems in their thermodynamic limit. We show that the most efficient approach expresses the sum of a factorial number of one-particle-irreducible diagrams as a recursive sum of determinants with exponential complexity. By comparing results for the two-dimensional Hubbard model with those obtained from state-of-the-art diagrammatic Monte Carlo, we show that we can reach higher perturbation orders and greater accuracy for the same computational effort.
Sustainable Blue Economy - Transformation, Value and the Potential of Marine Ecosystems
Creators: name: Biber, Antje
name: Knodt, Steffen
name: Visbeck, Martin
name: :Unav
Publisher: name: Fraunhofer-Gesellschaft
Year: 2021

description: "We have to make sure that as we grow the blue economy, it accelerates in a regenerative way. Moving to a sustainable blue economy would benefit food security, human health, underdeveloped communities - and of course, the environment." Alexandra Cousteau, President and Co-Founder Oceans 2050
Making Russia Great Again: The Importance of National Identity and Policy Elites in Russian Foreign Policy
Creators: name: Abbakumov, Kirill
Publisher: name: My University
Year: 2018

description: This paper examines the aspirations of Russian policy elites in defining post-Soviet Russia’s foreign policy objectives by attempting to restore a great power status in accordance to its historic national self-images and interests. Promoting Russia’s resurgence as a great power within the existing international order has become the primary domestic strategy during the 1990s as Russia attempted to recover from internal collapse, and has served as the foundation of modern Russian foreign policy under the auspices of President Vladimir Putin since the early 2000s. Russian resurgence is defined by the policy elite’s rejection of rapid and total Westernization in the foreign policy realm as unbefitting Russia’s greatness. This work seeks to untangle some of the historical factors intertwined with policy elite expectations which underlie the contemporary foundations of Russian foreign policy. A constructivist analysis can help expose these deep interconnections between Russian national identities and the psyche of the Russian foreign policy elite, which is helpful in tracing the direction of foreign policy formation. The expectation is that this analysis will provide a more in-depth understanding of the significance of history, national identity, and individual actors within the Russian foreign policy realm. The influence and authority of Russian foreign policy is readily felt on the global stage today. It is also present in many spheres of contemporary engagement between Russia and the West. Understanding the mindset of Russian policy elites therefore remains significant in formulating a wholesome and successful policy response to Russian actions.
Exploring the extent of digital food and beverage related content associated with a family-friendly event: a case study
Creators: name: Amson, Ashley
name: Remedios, Lauren
name: Pinto, Adena
name: Potvin Kent, Monique
Publisher: name: My University
Year: 2021
Subjects: Beverages
Case study
Digital marketing
Family-friendly event
Food
Social media
Social norms
Youth

description: Background: Exposure to unhealthy food and beverage content is a contributing factor to the obesity epidemic. Youth are susceptible to unhealthy digital food marketing including content shared by their peers, which can be as influential as commercial marketing. Current Canadian regulations do not consider the threat digital food marketing poses to health. No research to date has examined the prevalence of food related posts on social media surrounding family-friendly events. The aim of this study was to explore the frequency of food related content (including food marketing) and the marketing techniques employed in social media posts related to a family-friendly event in Canada. Methods: In this case study, a content analysis of social media posts related to a family-friendly event on Facebook, Twitter, and Instagram was conducted between January to February 2019. Each post containing food related content was identified and categorized by source and food category using a coding manual. Marketing techniques found in each food related post were also assessed. Results: A total of 732 food and beverage related posts were assessed. These posts were most commonly promoted through Instagram (n = 561, 76.6%) with significantly more individual users (61.5%; p < 0.05) generating food and beverage related content (n = 198, 27%) than other post sources. The top most featured food category was fast food (n = 328, 44.8%) followed by dine-in restaurants (n = 126, 17.2%). The most frequently observed marketing techniques included predominantly featuring a child in the post (n = 124, 16.9%; p < 0.0001), followed by products intended for children (n = 118, 16.1%; p < 0.05), and the presence of family (n = 57, 7.8%; p < 0.0001). Conclusions: The present study highlights the proliferation of unhealthy food and beverage content by individuals at a family-friendly event as well as the presence of food marketing. Due to the unfettered advertising found in digital spaces, and that they are largely unregulated, it is important for future policies looking to combat childhood obesity to consider incorporating social media into their regulations to safeguard family-friendly events. General awareness on the implications of peer to peer sharing of unhealthy food and beverage posts should also be considered.