cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmological Phase Transitions and their Properties in the NMSSM
Creators: name: Kozaczuk, Jonathan
name: Profumo, Stefano
name: Haskins, Laurel Stephenson
name: Wainwright, Carroll L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study cosmological phase transitions in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) in light of the Higgs discovery. We use an effective field theory approach to calculate the finite temperature effective potential, focusing on regions with significant tree-level contributions to the Higgs mass, a viable neutralino dark matter candidate, 1-2 TeV stops, and with the remaining particle spectrum compatible with current LHC searches and results. The phase transition structure in viable regions of parameter space exhibits a rich phenomenology, potentially giving rise to one- or two-step first-order phase transitions in the singlet and/or $SU(2)$ directions. We compute several parameters pertaining to the bubble wall profile, including the bubble wall width and $Δβ$ (the variation of the ratio in Higgs vacuum expectation values across the wall). These quantities can vary significantly across small regions of parameter space and can be promising for successful electroweak baryogenesis. We estimate the wall velocity microphysically, taking into account the various sources of friction acting on the expanding bubble wall. Ultra-relativistic solutions to the bubble wall equations of motion typically exist when the electroweak phase transition features substantial supercooling. For somewhat weaker transitions, the bubble wall instead tends to be sub-luminal and, in fact, likely sub-sonic, suggesting that successful electroweak baryogenesis may indeed occur in regions of the NMSSM compatible with the Higgs discovery.
description: 49 pages + 2 appendices, 6 figures. v2: Minor corrections; matches version published in JHEP
Chemistry in astrophysics : Atoms and Molecules
Creators: name: Dubernet, Marie-Lise
Publisher: name: Zenodo
Year: 2022

description: The presentation corresponds to a IUPAC WorldFair Chemistry Webinar. The presentation aims at presenting in 5mn the type of chemistry data that are used in astrophysics, how we annotate those data, how we manipulate those data, what are the challenges and the issues linked to FAIR implementation, and what could be the collaboration with IUPAC. The video is at DOI 10.5281/zenodo.7101347. IUPAC : https://iupac.org/worldfair-global-cooperation-on-fair-data-policy-and-practice/ and https://iupac.org/project/2022-012-1-024/ VAMDC: https://vamdc.org
Maximal existence domains of positive solutions for two-parametric systems of elliptic equations
Creators: name: Bobkov, Vladimir
name: Il'yasov, Yavdat
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: G.1.8
subject: 35J60, 35J20, 35J57

description: The paper is devoted to the study of two-parametric families of Dirichlet problems for systems of equations with $p, q$-Laplacians and indefinite nonlinearities. Continuous and monotone curves $Γ_f$ and $Γ_e$ on the parametric plane $λ\times μ$, which are the lower and upper bounds for a maximal domain of existence of weak positive solutions are introduced. The curve $Γ_f$ is obtained by developing our previous work \cite{BobkovIlyasov} and it determines a maximal domain of the applicability of the Nehari manifold and fibering methods. The curve $Γ_e$ is derived explicitly via minimax variational principle of the extended functional method.
description: The proof of statement (3) of Theorem 2.3 in the previous version of the article was not correct. The accents of the article have been changed. Exposition have been improved for easier reading. 15 pages, 2 figures
Kolmogorov complexity in the Milky Way and its reduction with warm dark matter
Creators: name: Neyrinck, Mark C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We discuss the Kolmogorov complexity of primordial patches that collapse to form galaxies like the Milky Way; this complexity quantifies the amount of initial data available to form the structure. We also speculate on how the quantity changes with time. Because of dark-matter and baryonic collapse processes, it likely decreases with time, i.e.\ information sinks dominate sources. But sources of new random information do exist; e.g., a central black hole with an accretion disk and jets could in principle broadcast small-scale quantum fluctuations over a substantial portion of a galaxy. A speculative example of how this concept might be useful is in differentiating between warm (WDM) and cold (CDM) dark matter. With WDM, the initial patch that formed the Milky Way would have had few features, making the present high degree of structure a curiosity. The primordial patch would have had only several billion independent information-carrying `pixels' if the WDM particle had a mass of 1 keV. This number of `pixels' is much less than even the number of stars in the Milky Way. If the dark matter is proven to be warm, the high degree of structure in the Milky Way could have arisen in two ways: (1) from a high sensitivity to initial conditions, like an intricate fractal arising from a relatively simple computer code; or (2) from random information generated after the galaxy formed, i.e.\ not entirely deterministically from the initial conditions.
description: Now matches version accepted to MNRAS Letters. 6 pages, 1 figure. Comments welcome
Four years of multi-modal odometry and mapping on the rail vehicles
Creators: name: Wang, Yusheng
name: Song, Weiwei
name: Zhang, Yi
name: Huang, Fei
name: Tu, Zhiyong
name: Li, Ruoying
name: Zhang, Shimin
name: Lou, Yidong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Precise, seamless, and efficient train localization as well as long-term railway environment monitoring is the essential property towards reliability, availability, maintainability, and safety (RAMS) engineering for railroad systems. Simultaneous localization and mapping (SLAM) is right at the core of solving the two problems concurrently. In this end, we propose a high-performance and versatile multi-modal framework in this paper, targeted for the odometry and mapping task for various rail vehicles. Our system is built atop an inertial-centric state estimator that tightly couples light detection and ranging (LiDAR), visual, optionally satellite navigation and map-based localization information with the convenience and extendibility of loosely coupled methods. The inertial sensors IMU and wheel encoder are treated as the primary sensor, which achieves the observations from subsystems to constrain the accelerometer and gyroscope biases. Compared to point-only LiDAR-inertial methods, our approach leverages more geometry information by introducing both track plane and electric power pillars into state estimation. The Visual-inertial subsystem also utilizes the environmental structure information by employing both lines and points. Besides, the method is capable of handling sensor failures by automatic reconfiguration bypassing failure modules. Our proposed method has been extensively tested in the long-during railway environments over four years, including general-speed, high-speed and metro, both passenger and freight traffic are investigated. Further, we aim to share, in an open way, the experience, problems, and successes of our group with the robotics community so that those that work in such environments can avoid these errors. In this view, we open source some of the datasets to benefit the research community.
A challenge to the $a$-theorem in six dimensions
Creators: name: Grinstein, Benjamin
name: Stergiou, Andreas
name: Stone, David
name: Zhong, Ming
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The possibility of a strong $a$-theorem in six dimensions is examined in multi-flavor $ϕ^3$ theory. Contrary to the case in two and four dimensions, we find that in perturbation theory the relevant quantity $\tilde{a}$ increases monotonically along flows away from the trivial fixed point. $\tilde{a}$ is a natural extension of the coefficient $a$ of the Euler term in the trace anomaly, and it arises in any even spacetime dimension from an analysis based on Weyl consistency conditions. We also obtain the anomalous dimensions and beta functions of multi-flavor $ϕ^3$ theory to two loops. Our results suggest that some new intuition about the $a$-theorem is in order.
description: 4 pages. v2: Fixed typos, added references
On linear preservers of permanental rank
Creators: name: Guterman, Alexander
name: Spiridonov, Igor
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 15A86 (Primary) 05C50, 15A15, 47L05 (Secondary)

description: Let ${\rm Mat}_n(\mathbb{F})$ denote the set of square $n\times n$ matrices over a field $\mathbb{F}$ of characteristic different from two. The permanental rank ${\rm prk}\,(A)$ of a matrix $A \in{\rm Mat}_{n}(\mathbb{F})$ is the size of the maximal square submatrix in $A$ with nonzero permanent. By $Λ^{k}$ and $Λ^{\leq k}$ we denote the subsets of matrices $A \in {\rm Mat}_{n}(\mathbb{F})$ with ${\rm prk}\,(A) = k$ and ${\rm prk}\,(A) \leq k$, respectively. In this paper for each $1 \leq k \leq n-1$ we obtain a complete characterization of linear maps $T: {\rm Mat}_{n}(\mathbb{F}) \to {\rm Mat}_{n}(\mathbb{F})$ satisfying $T(Λ^{\leq k}) = Λ^{\leq k}$ or bijective linear maps satisfying $T(Λ^{\leq k}) \subseteq Λ^{\leq k}$. Moreover, we show that if $\mathbb{F}$ is an infinite field, then $Λ^{k}$ is Zariski dense in $Λ^{\leq k}$ and apply this to describe such bijective linear maps satisfying $T(Λ^{k}) \subseteq Λ^{k}$.
description: 15 pages, minor corrections
Scanning Gate Microscopy of Quantum Contacts Under Parallel Magnetic Field: Beating Patterns Between Spin-Split Transmission Peaks or Channel Openings
Creators: name: Kleshchonok, Andrii
name: Fleury, Geneviève
name: Pichard, Jean-Louis
name: Lemarié, Gabriel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the conductance $g$ of an electron interferometer created in a two dimensional electron gas between a nanostructured contact and the depletion region induced by the charged tip of a scanning gate microscope. Using non-interacting models, we study the beating pattern of interference fringes exhibited by the images giving $g$ as a function of the tip position when a parallel magnetic field is applied. The analytical solution of a simplified model allows us to distinguish between two cases: (i) If the field is applied everywhere, the beating of Fabry-Pérot oscillations of opposite spins gives rise to interference rings which can be observed at low temperatures when the contact is open between spin-split transmission resonances. (ii) If the field acts only upon the contact, the interference rings cannot be observed at low temperatures, but only at temperatures of the order of the Zeeman energy. For a contact made of two sites in series, a model often used for describing an inversion-symmetric double-dot setup, a pseudo-spin degeneracy is broken by the inter-dot coupling and a similar beating effect can be observed without magnetic field at temperatures of the order of the interdot coupling. Eventually, numerical studies of a quantum point contact with quantized conductance plateaus confirm that a parallel magnetic field applied everywhere or only upon the contact gives rises to similar beating effects between spin-split channel openings.
description: 11 pages, 17 figures
title:  Reversal of Acquittal on Appeal: Fact Finding and the Right To Be Heard
Creators: name: Marafioti, Luca
Publisher: name: Roma TrE-Press
Year: 2022

description: The recent pronouncement of the European Court of Human Rights in the case Maestri v. Italy elevated the examination of the defendant on appeal to an indispensable step before overturning an acquittal into a conviction. It was ruled, in fact, that a mere chance to be heard is not enough, but a specific summons to appear before the Court of Appeal to make the examination is necessary; otherwise, the decision is unjust. One must ask oneself, then, what significance this rule assumes in the perspective of a legal conception of evidence of European matrix. If, that is, the defendant’s right to be heard takes on the value of a procedural defence guarantee as enshrined in Article 6 ECHR, or if, rather, it becomes something more: an epistemological rule addressed to the judge to ensure the reliability of the judgement. When reconstructed as an epistemological rule, the right of the accused to be heard by the appellate Court escapes the balancing game with the other guarantees, also established by the European Court in its holistic view of a fair criminal trial. However, due account must be taken of the risk that such a cognitive function of this right may lead to negative inferences being drawn from the silence of any defendant who does not wish to undergo the examination. This feeling of unease, which is confirmed by the jurisprudence of the European Court, should, however, be allayed by the recent directive on the presumption of innocence, which expressly prohibits drawing evidential indications from the silence of the defendant.
description: Roma Tre Law Review – 01/2022
Factoring and learning algorithms for low-depth algebraic circuits
Creators: name: Bhargava, Vishwas
Publisher: name: No Publisher Supplied
Year: 2022

description: Polynomial factoring and learning arithmetic circuits (a.k.a. circuit-reconstruction) are two fundamental problems in algebraic complexity. They are deeply connected to the questions of circuit lower bounds and polynomial identity testing (PIT). In this dissertation, we present various new results on learning and factoring of low-depth circuits, while emphasizing these connections.
On the fundamental group scheme of rationally chain connected varieties
Creators: name: Antei, Marco
name: Biswas, Indranil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M22, 14H30

description: Let $k$ be an algebraically closed field. Chambert-Loir proved that the étale fundamental group of a normal rationally chain connected variety over $k$ is finite. We prove that the fundamental group scheme of a normal rationally chain connected variety over $k$ is finite and étale. In particular, the fundamental group scheme of a Fano variety is finite and étale.
description: Final version in International Mathematics Research Notices, 2015
Monitoring and Responding to Signals of Suicidal Ideation in Pragmatic Clinical Trials: Lessons from the GRACE Trial for Chronic Sickle Cell Disease Pain
Creators: name: Swirsky, Eric
name: Boyd, Andrew
name: Gu, Carol
name: Burke, L
name: Doorenbos, Ardith
name: Ezenwa, M
name: Knisely, M
name: Leigh, Jonathan
name: Li, Hongjin
name: Mandernach, M
name: Molokie, Robert
name: Patil, Crystal
name: Steffen, Alana
name: Shah, N
name: deMartelly, V
name: Staman, Karen
name: Schlaeger, Judith
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences

description: Sickle cell disease (SCD) is a hemoglobin disorder and the most common genetic disorder that affects 100,000 Americans and millions worldwide. Adults living with SCD have pain so severe that it often requires opioids to keep it in control. Depression is a major global public health concern associated with an increased risk in chronic medical disorders, including in adults living with sickle cell disease (SCD). A strong relationship exists between suicidal ideation, suicide attempts, and depression. Researchers enrolling adults living with SCD in pragmatic clinical trials are obligated to design their methods to deliberately monitor and respond to symptoms related to depression and suicidal ideation. This will offer increased protection for their participants and help clinical in-vestigators meet their fiduciary duties. This article presents a review of this sociotechnical milieu that highlights, analyzes, and offers recommendations to address ethical considerations in the development of protocols, procedures, and monitoring activities related to suicidality in depressed patients in a pragmatic clinical trial.supplied
title:  Quelques remarques sur le droit au logement en tant qu’objet d’obligations faites aux Etats dans le système de la Charte sociale européenne
Creators: name: Palmisano, Giuseppe
Publisher: name: Roma TrE-Press
Year: 2022

description: [title: Some remarks on the right to housing as an object of State international obligations, under the legal system of the European Social Charter] At the European regional level, the right to housing, intended as a human right, is recognised and guaranteed by the Revised European Social Charter (RESC, 1996). Art. 31 of the RESC places a number of positive obligations on European States having accepted it, concerning the adoption of measures aimed at promoting access to housing of an adequate standard, preventing and reducing homelessness, and making the price of housing accessible to those without adequate resources. The present article draws the attention to the implementing practice of the RESC as an instrument for the protection and realization of the right to housing in Europe, particularly focusing on the case law of the European Committee of Social Rights (ECSR, the Charter supervisory body), as it emerges from the so-called collective complaints procedure, which enables social partners and nongovernmental organisations to apply to the ECSR directly for it to rule on possible violations of the Charter in the country concerned.
description: Roma Tre Law Review – 01/2022
Escape from bounded domains driven by multi-variate $α$-stable noises
Creators: name: Szczepaniec, Krzysztof
name: Dybiec, Bartlomiej
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we provide an analysis of a mean first passage time problem of a random walker subject to a bi-variate $α$-stable Lévy type noise from a 2-dimensional disk. For an appropriate choice of parameters the mean first passage time reveals non-trivial, non-monotonous dependence on the stability index $α$ describing jumps' length asymptotics both for spherical and Cartesian Lévy flights. Finally, we study escape from $d$-dimensional hyper-sphere showing that $d$-dimensional escape process can be used to discriminate between various types of multi-variate $α$-stable noises, especially spherical and Cartesian Lévy flights.
description: 8 pages, 5 figures
Power Estimation in LTE systems with the General Framework of Standard Interference Mappings
Creators: name: Cavalcante, Renato L. G.
name: Pollakis, Emmanuel
name: Stanczak, Slawomir
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: We devise novel techniques to obtain the downlink power inducing a given load in long-term evolution (LTE) systems, where we define load as the fraction of resource blocks in the time-frequency grid being requested by users from a given base station. These techniques are particularly important because previous studies have proved that the data rate requirement of users can be satisfied with lower transmit energy if we allow the load to increase. Those studies have also shown that obtaining the power assignment from a desired load profile can be posed as a fixed point problem involving standard interference mappings, but so far the mappings have not been obtained explicitly. One of our main contributions in this study is to close this gap. We derive an interference mapping having as its fixed point the power assignment inducing a desired load, assuming that such an assignment exists. Having this mapping in closed form, we simplify the proof of the aforementioned known results, and we also devise novel iterative algorithms for power computation that have many numerical advantages over previous methods.
description: IEEE Global SIP 2014
Reporte de los procedimientos de ratificación de tratados internacionales y control de constitucionalidad en las constituciones Latinoamericanas 2023
Creators: name: Polo Polo, María Camila
name: Polo Restrepo, Sebastián Emilio
name: Rocha Ayala, Angela Daniela
name: Abello Galvis, Ricardo
name: Álvarez Feria, Juliana
name: Casas Perea, Ángela María
name: Cortés Ballén, Diego Rodrigo
name: Freydell Mesa, Federico
name: Gutiérrez Pérez, Alejandro
name: Mejía Pinillos, Juan Camilo
name: Mora Ramírez, Danna Carolina
name: Nieto López, Laura Ximena
name: Ortiz Pinzón, Maria Alejandra
name: Sosa Bautista, Diana Sofía
name: Zapata Isaza, Valeria
name: Arévalo Ramírez, Walter Orlando
Publisher: name: Universidad del Rosario
Year: 2023

description: El presente documento despliega un examen detallado de los mecanismos de firma y ratificación de tratados internacionales, así como de los consecuentes mecanismos de control constitucional al procedimiento de ratificación de veintiséis Estados de América Latina. Consolidándose así, como una guía práctica y precisa para todo aquel interesado en conocer las disposiciones procedimentales para la adopción de un tratado internacional en Latinoamérica. Este análisis fue realizado en 2023 por los estudiantes de la Maestría en Derecho Internacional de la Facultad de Jurisprudencia de la Universidad del Rosario, en el marco del curso “América Latina y el Derecho Internacional”, quienes para su elaboración efectuaron una revisión profunda de las constituciones nacionales y de la jurisprudencia de los Estados objeto de estudio. Se espera que esta guía sea el punto de partida para una discusión más profunda en la materia.
title:  A New Chapter in the Never-Ending Rule of Law Saga in the EU: the Judgment on the Annulment of the Conditionality Mechanism
Creators: name: Sachetti, Viviana
Publisher: name: Roma TrE-Press
Year: 2022

description: The present contribution intends to provide a brief analysis of the recent judgments in the annulment proceedings brought before the European Court of Justice by Poland and Hungary concerning the alleged non-compliance with the Treaties of the conditionality mechanism (Regulation (EU) 2020/2092). The judgments may be deemed as a further step in defining the rule of law within the European Union legal order, as it sheds new light on this instrument, adopted in order to tackle violations of that Union’s fundamental value that bear negative consequences for the EU’s budget.
description: Roma Tre Law Review – 01/2022
title:  Sanctioning Russia: Questions on the Legality and the Legitimacy of the Measures Imposed Against the Invasion of Ukraine
Creators: name: Sossai, Mirko
Publisher: name: Roma TrE-Press
Year: 2022

description: Since the invasion of Ukraine in February 2022, an unprecedented level of cooperation has been achieved among a group of like-minded States – encompassing G7 members as well as Australia, Switzerland, and South Korea – in imposing sanctions against the Russian Federation. In
particular, the European Union has taken various rounds of restrictive measures against Russia: a combination of targeted sanctions against government élites and a more comprehensive package of measures of commercial and financial character. A key issue is that of their legality under international law. In the view of the EU, its restrictive measures are fully compliant with international obligations. They are in any event justified as a response to the Russia’s aggression, one of the most serious breaches of the fundamental rules of the international community. But other States disagree: they claim that the only legitimate sanctions are those adopted by the UN Security Council and unilateral measures
are always an unlawful intervention in the internal affairs of the targeted State.
description: Roma Tre Law Review – 01/2022
Reporte de las cláusulas de derecho internacional y política exterior de las constituciones Latinoamericanas 2021: Guía didáctica sobre la implementación, incorporación, eficacia y desarrollo del derecho internacional en las constituciones de América Latina
Creators: name: Aldana Borda, Natalia
name: Márquez Medina, Mariana Sofia
name: Álvarez Martínez, Abraham
name: Araujo Mejía, Sofia
name: Barragán Suárez, Brenda Lorena
name: Ortiz Fandiño, Héctor Ángel
name: Benítez Guerrero, Daniela
name: Penilla Olarte, Sarah María
name: Bohórquez Emel, Edwin
name: Quiñones Gámez, Gabriela Natalia
name: Burgos Velasco, Juan José
name: Quiroga Valero, Ana María
name: Camargo Villegas, Paola Andrea
name: Ramírez Barrera, Valentina
name: Cañón Páez, Ana María
name: Ramírez Ozuna, Sarah
name: Cheves Espinosa, María Camila
name: Rivera Rodríguez, Laura Sofia
name: Cifuentes Bojacá, Sara María
name: Rodríguez Rueda, Julián Andres
name: Concha Botero, Gabriel Andres
name: Rodríguez Vizcaino, Mariana
name: Díaz Trujillo, Laura Daniela
name: Rojas, Carolina
name: Espitia Pardo, Santiago
name: Rovira, Wilmer Duván
name: Gutiérrez Meza, Erick
name: Soto Vélez, Miguel
name: Hernández Tuirán, Héctor Felipe
name: Tapias Acevedo, Zamira Stefania
name: Jacquin Janica, Michelle-Sophie
name: Vela Lancheros, Camila
name: Leal Giraldo, Juliana
name: Márquez Peccart, Brander
name: Arévalo Ramírez, Walter Orlando
Publisher: name: Universidad del Rosario
Year: 2023

description: El reporte 2021 realizado por los estudiantes del curso “constitución, convencionalidad y derecho internacional” del pregrado en Derecho de la Facultad de Jurisprudencia de la Universidad del Rosario, presenta el estudio de la relación entre la constitución y el derecho internacional, a través de las cláusulas constitucionales de veintiséis (26) países de América Latina, especialmente en lo que respecta a su cláusula de supremacía constitucional; seguido de un ejemplo analizado de una cláusula en su correspondiente constitución que desarrolle la noción de “constitución internacional” y “constitución exterior”. Igualmente, el reporte presenta dos listados que enumeran el total de los artículos de la constitución que hacen referencia expresa al derecho internacional, y todas aquellas clausulas relevantes para las relaciones internacionales que desarrollen conceptos de política exterior en la constitución de cada Estado.
Inventaire de la biodiversité de Saint-Martin
Creators: name: Alice, Armand
name: Andreis Darlionei
name: Dubreuil Thomas
name: Benjamin, Ferlay
name: Christophe, Girod
name: Lecompte Camille
name: Pinelli Daniel
name: Servientis Nils
Publisher: name: Zenodo
Year: 2022
Subjects: Saint-Martin
Bivouac Naturaliste
Flore
Faune
Flora
Fauna
Biodiversité
Biodiversity
Islands

description: En 2021, une partie de l'équipe de l'association Bivouac Naturaliste a mené une importante campagne d'inventaire multi-taxonomique, sur la partie française de Saint-Martin (Antilles). Ce rapport et compte-rendu de mission expose les méthodes d’inventaires développées pendant la campagne de terrain et les résultats obtenus.
Tracing Magnetic Fields by Atomic Alignment in Extended Radiation Fields
Creators: name: Zhang, Heshou
name: Yan, Huirong
name: Dong, Le
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Tracing magnetic fields is crucial as magnetic fields play an important role in many astrophysical processes. Earlier studies have demonstrated that Ground State Alignment (GSA) is a unique way to detect weak magnetic fields (1G> B> 1exp(-15)G) in diffuse media, they consider the situation when the pumping source is a point source, which applies when the star is very far away from the diffuse media. In this paper, we explore the GSA in the presence of extended radiation fields. For the radiation fields with a clear geometric structure, we consider the alignment in circumstellar medium, binary systems, disc, and Local Interstellar Medium (LISM). For the radiation fields with unidentified pumping sources, we apply the method of multipole expansion and discuss the GSA induced by each component. We demonstrate that for general radiation fields, it is adequate to consider the contribution from dipole and quadrupole radiation components. We find that in general polarization of absorption arizing from GSA coincides with the projection of magnetic field in the 2D sky with 90 degree degeneracy. We conclude that the GSA is a unique tool to detect the direction of weak magnetic field, and it can be applied to diffuse media in any radiation field.
description: 17pages, 17 Figures, ApJ published
The spin measurement of MAXI J1348-630 using the Insight-HXMT data
Creators: name: Song, Yujia
name: Jia, Nan
name: Yang, Jun
name: Feng, Ye
name: Gou, Lijun
name: Lu, Tianhua
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the results of fitting Insight-HXMT data to the black hole X-ray binary MAXI J1348-430, which was discovered on January 26th, 2019, with the Gas Slit Camera (GSC) on-board MAXI. Several observations at the beginning of the first burst were selected, with a total of 10 spectra. From the residuals of fits using disk plus power law models, X-ray reflection signatures were clearly visible in some of these observations. We use the state-of the-art relxill series reflection model to fit six spectra with distinct reflection signatures and a joint fit to these spectra. In particular, we focus on the results for the black hole spin values. Assuming Rin = RISCO, the spin parameter is constrained to be 0.82+0.04-0.03 with 90% confidence level (statistical only).
description: Accepted for publication in MNRAS
title: Elternlos in der Fremde
Creators: name: Häusle, Sarah
Year: 2022

description: Auch heute noch flüchten zahlreiche Menschen vor Krieg und Verfolgung aus ihren Heimatländern, daher befasst sich die vorliegende Masterarbeit eingehend mit dem Thema Kindertransporte. Zu Beginn der Arbeit werden vor allem die historischen Entwicklungen der Zwischenkriegszeit dargelegt, um die Kindertransport-Aktion zu kontextualisieren. Anschließend widmet sich die Arbeit dem Thema Kindertransporte in Wien und nimmt unter anderem in den Blick, wie und unter welchen Umständen die Kindertransporte organisiert wurden, welche Kinder für einen Kindertransport in Frage kamen und wie die Kindertransporte selbst abgelaufen sind. Dabei konzentriert sich diese Masterarbeit vor allem auf die Situation in Wien sowie auf die Abreise aus Wien und die Ankunft im Zielland. Im zweiten großen Teil dieser Masterarbeit beschäftigt sich die Arbeit eingehend mit vier ausgewählten Zeitzeug*inneninterviews. Alle interviewten Zeitzeug*innen haben selbst einen Kindertransport miterlebt und schildern in ihren Interviews ihre Erinnerungen an diesen Kindertransport. Im dritten Teil dieser Arbeit wird ein Unterrichtskonzept vorgestellt, mit welchem Schüler*innen über die Kindertransporte informiert werden und mit Zeitzeug*inneninterviews arbeiten sollen. Im Unterrichtskonzept soll ebenso ein Gegenwartsbezug eingebaut werden.
title: Paleoseismology of the Seyring Fault in the Vienna Basin
Creators: name: Oppenauer, Lisa
Year: 2022

description: Das Wiener Becken ist charakterisiert durch seine historische sowie instrumentelle moderat seismische Aktivität. Absenkung Quartärer Becken und aktive Störungen im österreichischen Teil des Wiener Beckens sind durch, unter anderem, geomorphologische Merkmale wie Geländestufen (Geländekanten) und den Versatz von Quartären Terrassen der Donau, bewiesen. Diese Studie liefert Daten von einer abzweigenden Störung, des Seyringer Störungs-Systems (SFS), welche eine der Störungen ist, die die Extension der Wiener Becken Transfer Störung (VBTF) kompensieren. Das SFS ist eine SW – NO streichende Störung, welche die Gänserndorfer Terrasse im Westen von der Terrasse westlich von Seyring abgrenzt. Die Pleistozäne Gänserndorfer Terrasse im zentralen Wiener Becken, welche durch die Flussebene der Donau geformt wurde, ist durch die Aderklaa-Bockfließ Störung und die Markgrafneusiedl Störung in mehrere Abschnitte geteilt. Die Terrassen-Sedimente repräsentieren die glazialen- und interglazialen Abschnitte. Seismische Profile, Geoelektrik (ERT) Daten und Bohrloch Daten wurden zur Lokalisierung des Abschnitts des SFS, 3,4 km NNE der Stadtgrenze von Wien, eingesetzt.
description: The Vienna Basin is characterized by moderate historical and instrumental seismicity. Quaternary basin subsidence and active faulting in the Austrian part of the Vienna Basin is indicated by geomorphological features like fault scarps and the offset of Quaternary terraces of the Danube. This study adds data from a splay fault of the Seyring Fault System (SFS) which is one of the normal faults compensating extension at releasing fault bends of the Vienna Basin Transfer Fault (VBTF). The SFS is an approximately SW-NE striking normal fault, delimiting the Gänserndorf Terrace in the west, from the Terrace west of Seyring. The Pleistocene Gänserndorf Terrace in the central Vienna Basin, formed by the fluvial plain of the Danube, is dissected into several parts by the Aderklaa Bockfließ Fault and the Markgrafneusiedl Fault. The Terrace deposits represent glacial- and interglacial periods. Seismic profiles, electrical resistivity tomography (ERT) data and borehole data were used to locate a segment of the SFS 3.4 km NNE of the city limits of Vienna. Six events could be observed in the trench which took place in a time period between 31.96 kyr and 14.88 kyr cal BP producing several displacements of the sand and loess layers and three colluvial wedges with a maximum offset by a single event of about 0.4 m which is indicative of an earthquake with a magnitude of M=6.4. The smaller colluvial wedges and offsets are estimated to be produced by earthquakes with magnitudes between M=4 and M=5.5.
A novel approach to identify blazar emission states using clustering algorithms
Creators: name: Heckmann, L.
name: Paneque, D.
name: Reimer, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Even after decades of multi-wavelength (MWL) observations, blazars still remain mysterious objects. Their extreme variability and variety of emission characteristics observed during different time periods make it hard to understand the fundamental processes behind their emission. Thus, a robust identification and characterization of the different emission states among blazars is vital to investigate the underlying processes causing the observed emission. In this contribution, we present a novel technique to determine emission states across MWL lightcurves (LCs) of blazars using a clustering algorithm. Using the Extreme Deconvolution algorithm, we apply a Gaussian Mixture model to the 12-year long-term LC of one of our archetypal blazars, Mrk 501. The two main advantages of the method are that, compared to more conventional methods, such as the Bayesian block algorithm, it considers multiple wavebands simultaneously and it is not dependent on the order in time of the data points. This allows to assign data points to the same emission state even though they are separated by other states in time. The well sampled gamma-ray, X-ray and radio LCs used as input allow to identify six clusters. The clustering is mainly driven by the X-ray flux, showing different levels of quiescent, intermediate and high flux states. However, the radio flux reveals a more complicated pattern, dividing some of the X-ray flux levels in low and high-radio flux states. This suggests that multiple emission regions maybe responsible for the radio to gamma-ray flux.
description: 8 pages, 1 figure, Presented at the 38th International Cosmic Ray Conference (ICRC 2023), 2023
Multiple Single-Centered Attractors
Creators: name: Dominic, Pramod
name: Mandal, Taniya
name: Tripathy, Prasanta K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study spherically symmetric single-centered attractors in N=2 supergravity in four dimensions. The attractor points are obtained by extremising the effective black hole potential in the moduli space. Using the 4D-5D correspondence of critical points of the effective black hole potential we argue the existence of multiple attractors in four dimensions and explicitly construct a pair of multiple solutions in a simple two parameter model. We further obtain explicit examples of two distinct non-supersymmetric attractors in type IIA string theory compactified on K3 X T2 carrying D0-D4-D6 charges. We compute the entropy of these attractors and analyse their stability in detail.
description: Modifications in Section 3. Some incorrect results are removed and the section is rewritten
Light Deflection in Plasma in the Hartle-Thorne Metric and in Other Axisymmetric Spacetimes with a Quadrupole Moment
Creators: name: Bezdekova, Barbora
name: Bicak, Jiri
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The light propagation in plasma medium around stationary gravitating objects is studied in the geometrical optics limit. Static metrics with quadrupole moments are considered, however, the main attention is paid to the stationary Hartle-Thorne metric and Kerr metric. Their different effects on the light deflection are compared. The deflection angle is given in a general analytic form, the detailed calculations are performed in the weak field limits and illustrated graphically. The trajectories of the light rays are constructed and compared, emphasizing the role of the quadrupole moment.
description: accepted in Phys Rev D
Superconducting Sn_{1-x}In_{x}Te Nanoplates
Creators: name: Sasaki, Satoshi
name: Ando, Yoichi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, the search for Majorana fermions has become one of the most prominent subjects in condensed matter physics. This search involves explorations of new materials and hence offers interesting opportunities for chemistry. Theoretically, Majorana fermions may reside in various types of topological superconductor materials, and superconducting Sn_{1-x}In_{x}Te, which is a doped topological crystalline insulator, is one of the promising candidates to harbor Majorana fermions. Here, we report the first successful growth of superconducting Sn_{1-x}In_{x}Te nanoplates on Si substrates by a simple vapor transport method without employing any catalyst. We observed robust superconducting transitions in those nanoplates after device fabrication and found that the relation between the critical temperature and the carrier density is consistent with that of bulk single crystals, suggesting that the superconducting properties of the nanoplate devices are essentially the same as those of bulk crystals. With the help of nanofabrication, those nanoplates would prove useful for elucidating the potentially topological nature of superconductivity in Sn_{1-x}In_{x}Te to harbor Majorana fermions and thereby contribute to the future quantum technologies.
description: 16 page, 4 figures (paper proper) + 2 pages, 2 figures (supporting information); final version accepted for publication in Crystal Growth & Design
Data from study of Enhanced Efficacy of Direct Immunochemotherapy for Hepatic Cancer with Image-Guided Intratumoral Radiofrequen Hyperthermia
Creators: name: uwpaper, data
Publisher: name: figshare
Year: 2022
Subjects: subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: FOS: Clinical medicine

description: Data from study of Enhanced Efficacy of Direct Immunochemotherapy for Hepatic Cancer with Image-Guided Intratumoral Radiofrequen Hyperthermia
Zero temperature phase transitions and their anomalous influence on thermodynamic behavior in the q-state Potts model on a diamond chain
Creators: name: Panov, Yury
name: Rojas, Onofre
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The q-state Potts model on a diamond chain has mathematical significance in analyzing phase transitions and critical behaviors in diverse fields, including statistical physics, condensed matter physics, and materials science. By focusing on the 3-state Potts model on a diamond chain, we reveal rich and analytically solvable behaviors without phase transitions at finite temperatures. Upon investigating thermodynamic properties such as internal energy, entropy, specific heat, and correlation length, we observe sharp changes near zero temperature. Magnetic properties, including magnetization and magnetic susceptibility, display distinct behaviors that provide insights into spin configurations in different phases. However, the Potts model lacks genuine phase transitions at finite temperatures, in line with the Peierls argument for one-dimensional systems. Nonetheless, in the general case of an arbitrary $q$-state, magnetic properties such as correlation length, magnetization, and magnetic susceptibility exhibit intriguing remnants of a zero-temperature phase transition at finite temperatures. Furthermore, residual entropy uncovers unusual frustrated regions at zero-temperature phase transitions. This feature leads to the peculiar thermodynamic properties of phase boundaries, including a sharp entropy change resembling a first-order discontinuity without an entropy jump, and pronounced peaks in second-order derivatives of free energy, suggestive of a second-order phase transition divergence, but without singularities. This unusual behavior is also observed in the correlation length at the pseudo-critical temperature, which could potentially be misleading as a divergence.
description: 17 pages, 12 figures
Data from study of Enhanced Efficacy of Direct Immunochemotherapy for Hepatic Cancerwith Image-Guided Intratumoral Radiofrequen Hyperthermia
Creators: name: uwpaper, data
Publisher: name: figshare
Year: 2022
Subjects: subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)
subject: FOS: Clinical medicine

description: Data from study of Enhanced Efficacy of Direct Immunochemotherapy for Hepatic Cancerwith Image-Guided Intratumoral Radiofrequen Hyperthermia
Equivalence of two different approaches to global $δf$ gyrokinetic simulations
Creators: name: Parra, Felix I.
name: Barnes, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A set of flux tube gyrokinetic equations that includes the effect of the spatial variation of the density, temperature and rotation gradients on the turbulence is derived. This new set of equations uses periodic boundary conditions. In the limit $l_\bot/L \ll 1$, where $l_\bot$ is the characteristic perpendicular length of turbulent structures and $L$ is the characteristic size of the device, this new set of flux tube gyrokinetic equations is shown to be equivalent to the traditional global $δf$ gyrokinetic equations to an order higher in $l_\bot/L$ than the usual flux tube formulations.
description: 21 pages
title: Der Einfluss von Perfektionismus auf das Essverhalten
Creators: name: Körzö, Daniel
Year: 2022

description: Die vorliegende Masterarbeit gibt einen Überblick über die Bedingungen und Auswirkungen von Perfektionismus am Beispiel diverser Ernährungsmuster und den damit verbundenen Lebensmittelgruppen. Dabei wurden die Zusammenhänge von perfektionistischen Ausprägungen mit Ernährungsmustern bzw. dem Ernährungsverhalten von Österreicher*innen untersucht. Dazu wurden die Daten von n = 125 Befragten, die im Rahmen einer Querschnittsstudie in einem einmonatigen Zeitraum mittels Fragebogen untersucht wurden, ausgewertet. Die Basis der Masterarbeit bilden Onlinefragebögen aus den Bereichen Perfektionismus und Ernährung sowie die Studien von Terry-Short et al. (1995), Frost et al. (1990) und Wang-Li (2017), die wichtige Vorkenntnisse lieferten. Die ermittelten Ergebnisse können die von Wang-Li (2017) beschriebenen Feststellungen, dass negativer Perfektionismus mit stressinduziertem Ernährungsverhalten positiv zusammenhängt, nicht stützen. Allerdings wurde eine Verbindung zwischen positivem Perfektionismus und gesundheitsförderlichen Lebensmitteln sowie dem zugehörigen Health-Eating-Index durch die Korrelationsmethode nach Pearson gezeigt, was wiederum der gängigen Literatur entspricht. Diesbezüglich zeigt sich ebenfalls ein signifikant negativer Zusammenhang zwischen dem Gesamtperfektionismus und stressinduziertem Ernährungsverhalten. Trotz der durchwachsenen Ergebnisse dieser Studie, bekräftigen sie dennoch die ernstzunehmende Rolle von Perfektionismus beim Ernährungsverhalten. Die Kenntnis über derartige Beziehungen bietet einen Ansatz für Maßnahmen zur Bewahrung der Gesundheit.
Resisting or Embracing? Silicon Valley Stakeholders’ Perceptions of Artificial Intelligence in Education
Creators: name: Altenburg, Anabel
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: subject: Artificial Intelligence in Education
subject: Investors
subject: Founders
subject: Teachers
subject: Stanford Graduate School of Education International Education Policy Analysis

description: This research study establishes a foundational understanding of how the perceived goals of Artificial Intelligence in Education (AIEd) compare between three groups of Silicon Valley stakeholders: investors, founders and teachers. Drawing on Glenn Kleiman’s conceptual framework, which offers a five-point continuum to contextualize a range of stakeholder responses to AIEd, the study explores the interplay between public and private interests and the competing visions of education within the context of AIEd. Findings revealed a significant emphasis on skill shift among investors and founders, highlighting the importance of developing uniquely human skills to remain valuable in the workforce. In contrast, teachers maintained a more traditional approach, emphasizing academic prestige and test scores. Moreover, the changing role of the teacher evoked differing perspectives, with investors envisioning AIEd as a tool to free up teachers’ time, while teachers expressed concerns about the reduction of their role to mere overseers. All stakeholders expressed shared concerns about the impact of AIEd on critical thinking and independent thought, emphasizing the need for intentional design to ensure the enhancement, rather than replacement, of higher-order thinking skills. Lastly, the study highlights a misalignment of goals and perspectives among stakeholders, emphasizing the importance of teacher collaboration and involvement in the design and implementation of AIEd. These findings contribute to the ongoing discussions surrounding AIEd and provide insights for policymakers and stakeholders seeking to leverage the potential of AI, with policy recommendations that advocate for teacher collaboration, a balanced approach to skill development, and the establishment of ethical frameworks for AIEd.