cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multicast Multigroup Precoding and User Scheduling for Frame-Based Satellite Communications
Creators: name: Christopoulos, Dimitrios
name: Chatzinotas, Symeon
name: Ottersten, Bjorn
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The present work focuses on the forward link of a broadband multibeam satellite system that aggressively reuses the user link frequency resources. Two fundamental practical challenges, namely the need to frame multiple users per transmission and the per-antenna transmit power limitations, are addressed. To this end, the so-called frame-based precoding problem is optimally solved using the principles of physical layer multicasting to multiple co-channel groups under per-antenna constraints. In this context, a novel optimization problem that aims at maximizing the system sum rate under individual power constraints is proposed. Added to that, the formulation is further extended to include availability constraints. As a result, the high gains of the sum rate optimal design are traded off to satisfy the stringent availability requirements of satellite systems. Moreover, the throughput maximization with a granular spectral efficiency versus SINR function, is formulated and solved. Finally, a multicast-aware user scheduling policy, based on the channel state information, is developed. Thus, substantial multiuser diversity gains are gleaned. Numerical results over a realistic simulation environment exhibit as much as 30% gains over conventional systems, even for 7 users per frame, without modifying the framing structure of legacy communication standards.
description: Accepted for publication to the IEEE Transactions on Wireless Communications, 2015
Testing for intrinsic multifractality in the global grain spot market indices: A multifractal detrended fluctuation analysis
Creators: name: Wang, Li
name: Gao, Xing-Lu
name: Zhou, Wei-Xing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: Grains account for more than 50% of the calories consumed by people worldwide, and military conflicts, pandemics, climate change, and soaring grain prices all have vital impacts on food security. However, the complex price behavior of the global grain spot markets has not been well understood. A recent study performed multifractal moving average analysis (MF-DMA) of the Grains & Oilseeds Index (GOI) and its sub-indices of wheat, maize, soyabeans, rice, and barley and found that only the maize and barley sub-indices exhibit an intrinsic multifractal nature with convincing evidence. Here, we utilize multifractal fluctuation analysis (MF-DFA) to investigate the same problem. Extensive statistical tests confirm the presence of intrinsic multifractality in the maize and barley sub-indices and the absence of intrinsic multifractality in the wheat and rice sub-indices. Different from the MF-DMA results, the MF-DFA results suggest that there is also intrinsic multifractality in the GOI and soyabeans sub-indices. Our comparative analysis does not provide conclusive information about the GOI and soyabeans and highlights the high complexity of the global grain spot markets.
description: 23 pages including 14 figures
Toward polarized antiprotons: Machine development for spin-filtering experiments
Creators: name: Weidemann, C.
name: Rathmann, F.
name: Stein, H. J.
name: Lorentz, B.
name: Bagdasarian, Z.
name: Barion, L.
name: Barsov, S.
name: Bechstedt, U.
name: Bertelli, S.
name: Chiladze, D.
name: Ciullo, G.
name: Contalbrigo, M.
name: Dymov, S.
name: Engels, R.
name: Gaisser, M.
name: Gebel, R.
name: Goslawski, P.
name: Grigoriev, K.
name: Guidoboni, G.
name: Kacharava, A.
name: Kamerdzhiev, V.
name: Khoukaz, A.
name: Kulikov, A.
name: Lehrach, A.
name: Lenisa, P.
name: Lomidze, N.
name: Macharashvili, G.
name: Maier, R.
name: Martin, S.
name: Mchedlishvili, D.
name: Meyer, H. O.
name: Merzliakov, S.
name: Mielke, M.
name: Mikirtychiants, M.
name: Mikirtychiants, S.
name: Nass, A.
name: Nikolaev, N. N.
name: Oellers, D.
name: Papenbrock, M.
name: Pesce, A.
name: Prasuhn, D.
name: Retzlaff, M.
name: Schleichert, R.
name: Schröer, D.
name: Seyfarth, H.
name: Soltner, H.
name: Statera, M.
name: Steffens, E.
name: Stockhorst, H.
name: Ströher, H.
name: Tabidze, M.
name: Tagliente, G.
name: Engblom, P. Thörngren
name: Trusov, S.
name: Valdau, Yu.
name: Vasiliev, A.
name: Wüstner, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The paper describes the commissioning of the experimental equipment and the machine studies required for the first spin-filtering experiment with protons at a beam kinetic energy of $49.3\,$MeV in COSY. The implementation of a low-$β$ insertion made it possible to achieve beam lifetimes of $τ_{\rm{b}}=8000\,$s in the presence of a dense polarized hydrogen storage-cell target of areal density $d_{\rm t}=(5.5\pm 0.2)\times 10^{13}\,\mathrm{atoms/cm^{2}}$. The developed techniques can be directly applied to antiproton machines and allow for the determination of the spin-dependent $\bar{p}p$ cross sections via spin filtering.
Virtual Poincaré polynomial of the space of stable pairs supported on quintic curves
Creators: name: Chung, Kiryong
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let $\mathbf{M}^α(d,χ)$ be the moduli space of $α$-stable pairs $(s,F)$ on the projective plane $\mathbb{P}^2$ with Hilbert polynomial $χ(F(m))=dm+χ$. For sufficiently large $α$ (denoted by $\infty$), it is well known that the moduli space is isomorphic to the relative Hilbert scheme of points over the universal degree $d$ plane curves. For the general $(d,χ)$, the relative Hilbert scheme does not have a bundle structure over the Hilbert scheme of points. In this paper, as the first non trivial such a case, we study the wall crossing of the $α$-stable pairs space when $(d,χ)=(5,2)$. As a direct corollary, by combining with Bridgeland wall crossing of the moduli space of stable sheaves, we compute the virtual Poincaré polynomial of $\mathbf{M}^{\infty}(5,2)$.
description: To appear in Journal of Geometry and Physics
Self-assembly of colloid-cholesteric composites provides a possible route to switchable optical materials
Creators: name: Stratford, K.
name: Henrich, O.
name: Lintuvuori, J. S.
name: Cates, M. E.
name: Marenduzzo, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Colloidal particles dispersed in liquid crystals can form new materials with tunable elastic and electro-optic properties. In a periodic `blue phase' host, particles should template into colloidal crystals with potential uses in photonics, metamaterials, and transformational optics. Here we show by computer simulation that colloid/cholesteric mixtures can give rise to regular crystals, glasses, percolating gels, isolated clusters, twisted rings and undulating colloidal ropes. This structure can be tuned via particle concentration, and by varying the surface interactions of the cholesteric host with both the particles and confining walls. Many of these new materials are metastable: two or more structures can arise under identical thermodynamic conditions. The observed structure depends not only on the formulation protocol, but also on the history of an applied electric field. This new class of soft materials should thus be relevant to design of switchable, multistable devices for optical technologies such as smart glass and e-paper.
description: Manuscript with 3 figures plus supporting text and figures
Las funciones del lenguaje en el proceso de comunciación verbal
Creators: name: Montaña, Luis Eduardo
Publisher: name: Universidad del Rosario
Year: 2022

description: Recurso interactivo perteneciente al mooc Comunicación oral en entornos jurídicos en el cual se presentan los aspectos a tener en cuenta sobre las funciones del  lenguaje en el proceso de comunicación verbal.
Design of LDPC Code Ensembles with Fast Convergence Properties
Creators: name: Mulholland, Ian P.
name: Paolini, Enrico
name: Flanagan, Mark F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The design of low-density parity-check (LDPC) code ensembles optimized for a finite number of decoder iterations is investigated. Our approach employs EXIT chart analysis and differential evolution to design such ensembles for the binary erasure channel and additive white Gaussian noise channel. The error rates of codes optimized for various numbers of decoder iterations are compared and it is seen that in the cases considered, the best performance for a given number of decoder iterations is achieved by codes which are optimized for this particular number. The design of generalized LDPC (GLDPC) codes is also considered, showing that these structures can offer better performance than LDPC codes for low-iteration-number designs. Finally, it is illustrated that LDPC codes which are optimized for a small number of iterations exhibit significant deviations in terms of degree distribution and weight enumerators with respect to LDPC codes returned by more conventional design tools.
description: 6 pages, 5 figures, Submitted to the 3rd International Black Sea Conference on Communications and Networking (IEEE BlackSeaCom 2015)
Arquitectura socioeconómica recursiva
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se expone la tendencia de la arquitectura socioeconómicamente recursiva, se especifican sus caracterísitcas y obras representativas en Latinoamérica.
Single-file transport of binary hard-sphere mixtures through periodic potentials
Creators: name: Voráč, David
name: Maass, Philipp
name: Ryabov, Artem
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Single-file transport occurs in various scientific fields, including diffusion through nanopores, nanofluidic devices, and cellular processes. We here investigate the impact of polydispersity on particle currents for single-file Brownian motion of hard spheres, when they are driven through periodic potentials by a constant drag force. Through theoretical analysis and extensive Brownian dynamics simulations, we unveil the behavior of particle currents for random binary mixtures. The particle currents show a recurring pattern in dependence of the hard-sphere diameters and mixing ratio. We explain this recurrent behavior by showing that a basic unit cell exists in the space of the two hard-sphere diameters. Once the behavior of an observable inside the unit cell is determined, it can be inferred for any diameter. The overall variation of particle currents with the mixing ratio and hard-sphere diameters is reflected by their variation in the limit where the system is fully covered by hard spheres. In this limit, the currents can be predicted analytically. Our analysis explains the occurrence of pronounced maxima and minima of the currents by changes of an effective potential barrier for the center-of-mass motion.
description: 10 pages, 7 figures
Arquitectura objetual
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se expone la tendencia de la arquitectura objetual, se exploran sus características técnicas y artísticas, y se exponen algunos ejemplos de edificaciones que se orientan hacia exploraciones formales, estéticas y plásticas.
Switching of Perpendicularly Polarized Nanomagnets with Spin Orbit Torque without an External Magnetic Field by Engineering a Tilted Anisotropy
Creators: name: You, Long
name: Lee, OukJae
name: Bhowmik, Debanjan
name: Labanowski, Dominic
name: Hong, Jeongmin
name: Bokor, Jeffrey
name: Salahuddin, Sayeef
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin orbit torque (SOT) provides an efficient way of generating spin current that promises to significantly reduce the current required for switching nanomagnets. However, an in-plane current generated SOT cannot deterministically switch a perpendicularly polarized magnet due to symmetry reasons. On the other hand, perpendicularly polarized magnets are preferred over in-plane magnets for high-density data storage applications due to their significantly larger thermal stability in ultra-scaled dimensions. Here we show that it is possible switch a perpendicularly polarized magnet by SOT without needing an external magnetic field. This is accomplished by engineering an anisotropy in the magnets such that the magnetic easy axis slightly tilts away from the film-normal. Such a tilted anisotropy breaks the symmetry of the problem and makes it possible to switch the magnet deterministically. Using a simple Ta/CoFeB/MgO/Ta heterostructure, we demonstrate reversible switching of the magnetization by reversing the polarity of the applied current. This demonstration presents a new approach for controlling nanomagnets with spin orbit torque.
Strong-Field Double Ionization in a Three-Electron Atom: Momentum Distribution Analysis
Creators: name: Efimov, Dmitry K.
name: Maksymov, Artur
name: Zakrzewski, Jakub
name: Prauzner-Bechcicki, Jakub S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study strong-field double ionization in a three-electron atom by applying a simplified, reduced-dimensionality model with three active electrons. The influence of the spin-induced symmetry of the spatial part of the wavefunction on the final two-photoectron momentum distribution is discussed. We identify partial momentum distributions originating from different sets of spins of outgoing electrons providing in this way a quantum support connection between V-structure and direct ionization typically explained classically. Changes in the momentum distribution with increasing field amplitude obtained in our simplified model are shown to be well-correlated with experimental data known from the literature. The possible relation between the observed dependencies and different ionization mechanisms is discussed.
description: 9 pages, 4 figures
Mean-square symplectic methods for Hamiltonian systems with multiplicative noise
Creators: name: Milstein, Grigori N.
name: Repin, Yuri M.
name: Tretyakov, Michael V.
Publisher: name: Weierstrass Institute
Year: 2001
Subjects: subject: Stochastic Hamiltonian systems
subject: symplectic integration
subject: implicit methods
subject: mean-square convergence
subject: 60H10
subject: 65U05

description: Stochastic systems with multiplicative noise, phase flows of which have integral invariants, are considered. For such systems, numerical methods preserving the integral invariants are constructed using full implicit schemes of a new type for stochastic differential equations. In these full implicit schemes increments of Wiener processes are substituted by some truncated random variables. They are important for both theory and practice of numerical integration of stochastic differential equations. A special attention is paid to systems with separable Hamiltonians and to Hamiltonian systems with small noise. Liouvillian methods for stochastic systems preserving phase volume are also proposed. Some results of numerical experiments are presented.
Arquitectura racionalmente rigorista
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se explica la tendencia de la arquitectura racionalmente rigorista, se exponen algunos ejemplos destacados de firmas y edificaciones que privilegian premisas técnicas, programáticas y constructivas siguiendo procedimientos racionales.
title: Scaffolding und Lesen im Deutschunterricht in der Sekundarstufe I
Creators: name: Weghofer, Denise
Year: 2022

description: Die vorliegende Arbeit widmet sich der Frage, inwiefern Tools im Sinne des Scaffoldings nach Pauline Gibbons im Deutschunterricht in der Sekundarstufe I dafür eingesetzt werden können, Zweitsprachenlernende darin zu unterstützen, sich zu erfolgreichen Leser*innen in der Zweitsprache zu entwickeln. Unter Zuhilfenahme einschlägiger Fachliteratur begibt sich diese Arbeit zuerst auf die Spuren des Scaffoldings nach Pauline Gibbons und stellt sowohl die linguistischen als auch die pädagogischen Theorien dar, welche Einfluss auf dessen Entwicklung hatten. Anschließend wird dargestellt, welche Voraussetzungen gegeben sein müssen, um Zweitsprachenlernenden erfolgreiches Lesen in der Zweitsprache zu ermöglichen. Zudem werden Verfahren der Leseanimation im Sinne des Scaffoldings näher beleuchtet. Im Rahmen dieser Arbeit wurde auch ein Leseprojekt, im Zuge dessen verschiedene Scaffolding-Tools zum Einsatz kamen, mit vorwiegend zweitsprachenlernenden Schüler*innen geplant, durchgeführt und im Sinne der Aktionsforschung untersucht.
Electrical conductivity of crack-template-based transparent conductive films: A computational point of view
Creators: name: Tarasevich, Yuri Yu.
name: Eserkepov, Andrei V.
name: Vodolazskaya, Irina V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Crack-template-based transparent conductive films (TCFs) are promising kinds of junction-free, metallic network electrodes that can be used, e.g., for transparent electromagnetic interference (EMI) shielding. Using image processing of published photos of TCFs, we have analyzed the topological and geometrical properties of such crack templates. Additionally, we analyzed the topological and geometrical properties of some computer-generated networks. We computed the electrical conductance of such networks against the number density of their cracks. Comparison of these computations with predictions of the two analytical approaches revealed the proportionality of the electrical conductance to the square root of the number density of the cracks was found, this being consistent with the theoretical predictions.
description: 13 pages, 11 figures, 3 tables, 52 references
Regulation of Vascular Inflammation by Selectin Antagonists and Transcription Factor GATA5
Creators: name: Joyal, Mathieu
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: Vascular inflammation
endothelial cells
Selectin antagonists

description: Chronic inflammation is a complex immune response linked to several diseases. The first step in the inflammatory response is the recruitment of immune cells to the endothelium of the vascular wall. This process is mediated by E/P-Selectin, for which no antagonist efficiently interacts to limit the inflammatory response. Previous work identified transcription factor GATA5 as a key regulator of endothelial homeostasis and revealed an altered expression of inflammatory genes in human endothelial cells with loss of GATA5. The objective of my project is to understand the role of GATA5 in selectin-dependent vascular inflammation and to develop selectin inhibitors. I used biochemical, cellular and in vivo approaches to evaluate a series of novel small molecules for their ability to interfere with selectin binding to their ligand, PSGL-1. The work identified a new lead candidate, LCB 2248, for the development of new E/P-Selectin antagonists and contributed to the understanding of the role of GATA5 in cell recruitment and adhesion. The mechanistic insight gathered and the identification of an E/P-Selectin antagonist will hopefully pave the way for the development of effective treatments for patients with chronic inflammation.
Phenomenology of Dark Matter via a Bimetric Extension of General Relativity
Creators: name: Bernard, Laura
name: Blanchet, Luc
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a relativistic model of dark matter reproducing at once the concordance cosmological model $Λ$-Cold-Dark-Matter ($Λ$-CDM) at cosmological scales, and the phenomenology of the modified Newtonian dynamics (MOND) at galactic scales. To achieve this we postulate a non-standard form of dark matter, consisting of two different species of particles coupled to gravity via a bimetric extension of general relativity, and linked together through an internal vector field (a "graviphoton") generated by the mass of these particles. We prove that this dark matter behaves like ordinary cold dark matter at the level of first order cosmological perturbation, while a pure cosmological constant plays the role of dark energy. The MOND equation emerges in the non-relativistic limit through a mechanism of gravitational polarization of the dark matter medium in the gravitational field of ordinary matter. Finally we show that the model is viable in the solar system as it predicts the same parametrized post-Newtonian parameters as general relativity.
description: 34 pages, matches published version
Arquitectura fenomenológica expresiva
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se expone la tendencia de la arquitectura fenomenológica expresiva, especificando sus características y algunos ejemplos donde se distingue el enfoque sensorial hacia el espacio, su atmósfera, la materialidad y el lugar.
title: Was bedingt die FoMO? - eine Analyse demographischer und kontextueller, sozialer, psychischer und emotionaler, Verhaltens- und Persönlichkeitsfaktoren zur Erklärung eines neuen Phänomens
Creators: name: Klettenhofer, Lisa
Year: 2022

description: Die Fear of Missing Out (FoMO) beschreibt die Angst, sozial lohnende Erfahrungen zu verpassen, und führt zu negativen Folgen auf psychischer, physischer und der Verhaltensebene. Um das Verständnis für die Logik des Phänomens zu erhöhen und mögliche Prädiktoren zu identifizieren, untersuchte die vorliegende Masterarbeit mithilfe eines explorativen Vorgehens den Zusammenhang der FoMO mit demographischen und kontextuellen, sozialen, psychischen und emotionalen, Verhaltens- und Persönlichkeitsfaktoren. Dazu wurde im Rahmen einer Online-Befragung die Ausprägung der FoMO sowie 27 weiterer Faktoren erhoben. Das österreichische Sample bestand aus 544 Social-Media-Nutzer*innen zwischen 14 und 75 Jahren. Mittels einer multiplen linearen Regression wurden neun potenzielle Prädiktoren der FoMO identifiziert: Neid und das Bedürfnis nach Zugehörigkeit wiesen einen positiven kausalen Zusammenhang mittlerer Stärke (β > .20) mit der FoMO auf. Kleine positive Effekte (β > .10) zeigten sich für die Attachment Anxiety, die Intensität der Social-Media-Nutzung sowie das Nutzungsmotiv „Soziale Anerkennung“ und sehr kleine Effekte (β > .05) für den beruflichen Status „In Ausbildung“, die Lebenszufriedenheit, die Attachment Avoidance und den sozialen Vergleich. Die Ergebnisse werden im Kontext des aktuellen Forschungsstandes sowie in Hinblick auf ihren Beitrag zu einem besseren Verständnis bedingender Faktoren der FoMO diskutiert.
description: Fear of Missing Out (FoMO) describes the anxiety of missing out on socially rewarding experiences and leads to negative consequences at psychological, physical and behavioural levels. To increase the understanding of the logic of the phenomenon and to identify possible predictors, this master's thesis used an exploratory approach to investigate the relationship of FoMO with demographic and contextual, social, psychological and emotional, behavioural and personality factors. For this purpose, an online survey was conducted to measure FoMO and 27 other factors. The Austrian sample consisted of 544 social media users aged 14 to 75. Using multiple linear regression, nine potential predictors of FoMO were identified: Envy and the need to belong showed a positive causal relationship of medium strength (β > .20) with FoMO. Small positive effects (β > .10) were found for attachment anxiety, the intensity of social media use and the usage motive "Social recognition", and very small effects (β > .05) for the occupational status "In education", life satisfaction, attachment avoidance and social comparison. The results are discussed in the context of the current state of research and regarding their contribution to a better understanding of the determinants of FoMO.
Controlling electric and magnetic Purcell effects in phosphorene via strain engineering
Creators: name: Abrantes, P. P.
name: Kort-Kamp, W. J. M.
name: Rosa, F. S. S.
name: Farina, C.
name: Pinheiro, F. A.
name: Cysne, Tarik P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the spontaneous emission lifetime of a quantum emitter near a substrate coated with phosphorene under the influence of uniaxial strain. We consider both electric dipole and magnetic dipole-mediated spontaneous transitions from the excited to the ground state. The modeling of phosphorene is performed by employing a tight-binding model that goes beyond the usual low-energy description. We demonstrate that both electric and magnetic decay rates can be strongly tuned by the application of uniform strain, ranging from a near-total suppression of the Purcell effect to a remarkable enhancement of more than 1300% due to the high flexibility associated with the puckered lattice structure of phosphorene. We also unveil the use of strain as a mechanism to tailor the most probable decay pathways of the emitted quanta. Our results show that uniaxially strained phosphorene is an efficient and versatile material platform for the active control of light-matter interactions thanks to its extraordinary optomechanical properties.
Arquitectura inmobiliaria
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se explica la tendencia de la arquitectura inmobiliaria, sus caracterísitcas y se presentan algunos referentes de firmas y edificaciones que privilegian premisas comerciales, económicas y normativas.
Arquitectura Regionalmente Caracterizada
Creators: name: Aschner, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2022

description: Video presentación perteneciente al curso Arquitectura latinoamericana contemporánea en la cual se exponen las principales características de la arquitectura regionalmente caracterizada, la cual se enfoca principalmente en las tradiciones constructivas vernáculas y la sostenibilidad ambiental, así mismo, se presentan algunas obras representativas en Latinoamérica.
title: Dialogisches Lesen als Mittel zur Sprachförderung
Creators: name: Savel, Christina
Year: 2022

description: Sprachförderung soll Kinder, deren sprachliche Fähigkeiten noch weniger entwickelt sind, unterstützen. Da vor allem Eltern viel Zeit mit ihren Kindern verbringen und am besten über ihre Kinder Bescheid wissen, ist es sinnvoll, sie in die Sprachförderung einzubinden. Dazu eignet sich das dialogische Lesen, eine Methode bei der Kinder angeregt werden das Ansehen eines Bilderbuches aktiv mitzugestalten. Dafür wird wenig Vorwissen benötigt und es kann auch bei eingeschränkten zeitlichen und finanziellen Ressourcen durchgeführt werden. Um die Eltern bei der Durchführung unterstützen zu können, wurde folgende Forschungsfrage formuliert: Welche Unterstützung brauchen Eltern von Kindern mit Deutsch als Zweitsprache im Vorschulalter, um dialogisches Lesen zuhause umsetzen zu können? Mithilfe von halbstrukturierten Interviews und einer Auswertung nach Mayring (2015) konnten vier Probandinnen mit jeweils einem Kind im Vorschulalter, das mehrsprachig aufwächst, befragt werden. Es wurde den Eltern eine Informationsbroschüre zum dialogischen Lesen mitgegeben und sie wurden vor und nach dem Durchführen des dialogischen Lesens interviewt. Dabei stellte sich heraus, dass die befragten Eltern bereits vor dem Erhalten der Informationen Aspekte des dialogischen Lesens intuitiv umgesetzt haben. Sie berichten aber davon, dass sie sich schon früher mehr Informationen zum Vorlesen gewünscht hätten. Damit jede Altersgruppe von Kindern abgedeckt werden kann, könnten in Zukunft noch verschiedene Informationsbroschüren erstellt werden, die die Kinder individuell berücksichtigen.
Finite-size scaling of the random-field Ising model above the upper critical dimension
Creators: name: Fytas, Nikolaos G.
name: Martin-Mayor, Victor
name: Parisi, Giorgio
name: Picco, Marco
name: Sourlas, Nicolas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Finite-size scaling above the upper critical dimension is a long-standing puzzle in the field of Statistical Physics. Even for pure systems various scaling theories have been suggested, partially corroborated by numerical simulations. In the present manuscript we address this problem in the even more complicated case of disordered systems. In particular, we investigate the scaling behavior of the random-field Ising model at dimension $D = 7$, i.e., above its upper critical dimension $D_{\rm u} = 6$, by employing extensive ground-state numerical simulations. Our results confirm the hypothesis that at dimensions $D > D_{\rm u}$, linear length scale $L$ should be replaced in finite-size scaling expressions by the effective scale $L_{\rm eff} = L^{D / D_{\rm u}}$. Via a fitted version of the quotients method that takes this modification, but also subleading scaling corrections into account, we compute the critical point of the transition for Gaussian random fields and provide estimates for the full set of critical exponents. Thus, our analysis indicates that this modified version of finite-size scaling is successful also in the context of the random-field problem.
description: 10 pages, 5 figures, Appendix included, version published in Phys. Rev. E
Deep Contract Design via Discontinuous Networks
Creators: name: Wang, Tonghan
name: Dütting, Paul
name: Ivanov, Dmitry
name: Talgam-Cohen, Inbal
name: Parkes, David C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Contract design involves a principal who establishes contractual agreements about payments for outcomes that arise from the actions of an agent. In this paper, we initiate the study of deep learning for the automated design of optimal contracts. We introduce a novel representation: the Discontinuous ReLU (DeLU) network, which models the principal's utility as a discontinuous piecewise affine function of the design of a contract where each piece corresponds to the agent taking a particular action. DeLU networks implicitly learn closed-form expressions for the incentive compatibility constraints of the agent and the utility maximization objective of the principal, and support parallel inference on each piece through linear programming or interior-point methods that solve for optimal contracts. We provide empirical results that demonstrate success in approximating the principal's utility function with a small number of training samples and scaling to find approximately optimal contracts on problems with a large number of actions and outcomes.
Higher derivatives and power spectrum in effective single field inflation
Creators: name: Gong, Jinn-Ouk
name: Seo, Min-Seok
name: Sypsas, Spyros
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study next-to-leading corrections to the effective action of the curvature perturbation obtained by integrating out the coupled heavy isocurvature perturbation. These corrections result from including higher order derivative operators, weighted by the mass scale of the heavy physics, in the effective theory expansion. We find that the correction terms are suppressed by the ratio of the Hubble parameter to the heavy mass scale. The corresponding corrections to the power spectrum of the curvature perturbation are presented for a simple illustrative example.
description: (v1) 11 pages, 1 figure; (v2) discussions improved and typos corrected, to appear in Journal of Cosmology and Astroparticle Physics
title:  Jhering y su “espíritu del derecho romano”: lectura de un joven estudioso
Creators: name: Cinotti, Leonardo
Publisher: name: Roma TrE-Press
Year: 2022

description: This article aims to offer scholars and those interested in the History of Roman Law, as well as in the History of Law in general, an interpretation and a renewed reading of one of the most important ‘classic’ works on this subject, that is «The spirit of Roman Law at the various stages of its development» by Rudolf Von Jhering. This work – which is enormous because it consists of four volumes and almost two thousand pages – marks, without any doubt, an unprecedented turning point in the approach to Roman Law and in the elaboration of a new method of studying the history of legal phenomena. Indeed, through an immersion in all areas of the history of the Roman people, from the religious, to the economic, social, cultural, anthropological and philological, Jhering tried to discover the soul and the true essence of the origin of Roman Law and the development of one of the most successful legal systems in history.
description: Roma Tre Law Review – 01/2022
أثر برنامج تدريبي مقترح بطريقة التدريب الفتري لتحسين الأداء المهاري لدى لاعبي كرة القدم - أكابر عين أزال لكرة القدم نموذجا- The effect of a proposed training program using the interval training method to improve the skillful performance of soccer players. - Akbar Ain Azal for football as a model
Creators: name: ﻨوﻓﻞ, سباع
name: سديرة, ساعد
Publisher: name: Zenodo
Year: 2023
Subjects: Impact, plan, skills, skill performance, Football Players

description: The Object of the study aims to identify a suggested plan on developing skill performance of football players, for this purpose, we used the method Empirical On a sample composed of 16 player (64%) Ain Zale, Chosen as procedure., and for data collection, we used a scales the skill and scales conditioning in 8 weeks for 4for training sessions a week After collecting the results and having treated them statistically, we conclude: the plan under a suggested as the long impact for skill performance on the football, On this basis, the study recommended Used a plan of skills training when participants undergo the main skills, owing to the substantial role of such a plan in developing performance in of football players.
Decomposing the Origin of TeV-PeV Emission from the Galactic Plane: Implications of Multi-messenger Observations
Creators: name: Fang, Ke
name: Murase, Kohta
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: High-energy neutrino and $γ$-ray emission has been observed from the Galactic plane, which may come from individual sources and/or diffuse cosmic rays. We evaluate the contribution of these two components through the multimessenger connection between neutrinos and $γ$ rays in hadronic interactions. We derive maximum fluxes of neutrino emission from the Galactic plane using $γ$-ray catalogs, including 4FGL, HGPS, 3HWC, and 1LHAASO, and measurements of the Galactic diffuse emission by Tibet AS$γ$ and LHAASO. We find that the IceCube Galactic neutrino flux is larger than the contribution from all resolved sources when excluding promising leptonic sources such as pulsars, pulsar wind nebulae, and TeV halos. Our result indicates that the Galactic neutrino emission is likely dominated by the diffuse emission by the cosmic-ray sea and unresolved hadronic $γ$-ray sources. In addition, the IceCube flux is comparable to the sum of the flux of non-pulsar sources and the LHAASO diffuse emission especially above 30 TeV. This implies that the LHAASO diffuse emission may dominantly originate from hadronic interactions, either as the truly diffuse emission or unresolved hadronic emitters. Future observations of neutrino telescopes and air-shower $γ$-ray experiments in the Southern hemisphere are needed to accurately disentangle the source and diffuse emission of the Milky Way.
description: 9+3 pages, 4+2 figures, 0+2 tables, accepted for publication in ApJL
Mars Express measurements of surface albedo changes over 2004 - 2010
Creators: name: Vincendon, Mathieu
name: Audouard, Joachim
name: Altieri, Francesca
name: Ody, Anouck
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The pervasive Mars dust is continually transported between the surface and the atmosphere. When on the surface, dust increases the albedo of darker underlying rocks and regolith, which modifies climate energy balance and must be quantified. Remote observation of surface albedo absolute value and albedo change is however complicated by dust itself when lifted in the atmosphere. Here we present a method to calculate and map the bolometric solar hemispherical albedo of the Martian surface using the 2004 - 2010 OMEGA imaging spectrometer dataset. This method takes into account aerosols radiative transfer, surface photometry, and instrumental issues such as registration differences between visible and near-IR detectors. Resulting albedos are on average 17% higher than previous estimates for bright surfaces while similar for dark surfaces. We observed that surface albedo changes occur mostly during the storm season due to isolated events. The main variations are observed during the 2007 global dust storm and during the following year. A wide variety of change timings are detected such as dust deposited and then cleaned over a Martian year, areas modified only during successive global dust storms, and perennial changes over decades. Both similarities and differences with previous global dust storms are observed. While an optically thin layer of bright dust is involved in most changes, this coating turns out to be sufficient to mask underlying mineralogical near-IR spectral signatures. Overall, changes result from apparently erratic events; however, a cyclic evolution emerges for some (but not all) areas over long timescales.
title: Lesen ist ein großes Wunder
Creators: name: Überacker, Julia Erika
Year: 2022

description: Diese Arbeit beschäftigt sich mit kontrastiver Alphabetisierung im Situationsansatz. Der Fokus liegt hierbei auf dem Projekt KASA der GIZ Berlin. Das Projekt KASA bietet niederschwellige Alphabetisierungskurse für Migrant*innen mit den Erstsprachen Arabisch, Persisch und Türkisch, wobei mit einem kontrastiven Ansatz gearbeitet wird. Es werden in Deutschland 42 Kurse in acht Bundesländern angeboten. Die Projektziele sind die Weiterentwicklung des Ansatzes der kontrastiven Alphabetisierung im Situationsansatz wie auch die weitere Übernahme dieses Ansatzes und die Entwicklung eines Kursleiterhandbuches zur kontrastiven Alphabetisierung. Im Rahmen des KASA-Projekts nahmen die Deutschlerner*innen an der lea-Testung teil, die im Rahmen dieser Arbeit ausgewertet wurde. Für die Beantwortung der Forschungsfragen wurden fünf Kriterien für die Auswertung der lea-Testung herangezogen: (1) korrekte Groß- und Kleinschreibung, (2) Vokale, (3) Konsonanten, (4) die richtige Schreibung des Wortes daher und (5) allgemeine Fehler. Diese Auswertungspunkte basieren auf den Hypothesen, die im Laufe der Arbeit aufgestellt und anhand der Auswertung verifiziert beziehungsweise falsifiziert wurden. Die Arbeit zeigt, dass Deutschlerner*innen mit Türkisch als Erstsprache bei der Großschreibung besser abschneiden als Proband*innen mit Arabisch oder Persisch als Erstsprache. Ferner stellen ausgewählte Konsonanten(verbindungen) für Lerner*innen mit Arabisch oder Persisch als Erstsprache Hindernisse dar. Ebenso treten bei komplexen Wörtern Schwierigkeiten auf. Deutschlerner*innen mit Türkisch als Erstsprache schneiden bezüglich der korrekten Schreibung von ausgewählten Vokalen wie auch Konsonanten nicht besser ab als jene mit Arabisch oder Persisch als Erstsprache. Weiterführend fiel auf, dass Lerner*innen mit Türkisch als Erstsprache verschiedene Aufgaben vermehrt unbeantwortet gelassen haben. Grundsätzlich liegen die Ergebnisse der Proband*innen mit den Erstsprachen Arabisch und Persisch nahe beieinander.
title:  The Evolving (?) Notion of ‘Agreement’ in the Age of Algorithms. Interactions Between Antitrust and Contract Law
Creators: name: Mezzanotte, Francesco
name: Colangelo, Giuseppe
Publisher: name: Roma TrE-Press
Year: 2022

description: By affecting business strategies and consumers’ behavior, the wide-scale use of algorithms, prediction machines and blockchain technology is currently challenging the suitability of several legal rules and notions which have been designed to deal with human intervention. In the specific sector of antitrust law, the question is arising on the adequacy of the traditional doctrines sanctioning anticompetitive cartels to tackle coordinated practices which, in the absence of an explicit “meeting of the minds” of their participants, may be facilitated by algorithmic processes adopted, and eventually shared, by market actors. The main concern in these cases, discussed both at regulatory and academic level, derives from the general observation that while the traditional concept of collusive agreement requires some form of mutual understanding among parties, nowadays decision-making of firms is increasingly transferred to digitalized tools. Moving on from these premises, the paper investigates the impact that the rules applicable to the conclusion of (smart) contracts may have, from an antitrust law perspective, in the detection and regulation of anticompetitive practices.
description: Roma Tre Law Review – 01/2022
The Dirac point electron in zero-gravity Kerr--Newman spacetime
Creators: name: Kiessling, M. K. -H.
name: Tahvildar-Zadeh, A. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81, 83, 35

description: Dirac's wave equation for a point electron in the topologically nontrivial maximal analytically extended electromagnetic Kerr--Newman spacetime is studied in a zero-gravity limit; here, "zero-gravity" means $G\to 0$, where $G$ is Newton's constant of universal gravitation. The following results are obtained: the formal Dirac Hamiltonian on the static spacelike slices is essentially self-adjoint; the spectrum of the self-adjoint extension is symmetric about zero, featuring a continuum with a gap about zero that, under two smallness conditions, contains a point spectrum. Some of our results extend to a generalization of the zero-$G$ Kerr--Newman spacetime with different electric-monopole-to-magnetic-dipole-moment ratio.
description: 49 pages, 17 figures; referee's comments implemented; the endnotes in the published version appear as footnotes in this preprint
Observational Constraints on generalized dark matter properties in the presence of neutrinos with the final Planck release
Creators: name: Yadav, Vikrant
name: Yadav, Santosh Kumar
name: Yadav, Anil Kumar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we investigate an extension of the standard $Λ$CDM model by allowing: a temporal evolution in the equation of state (EoS) of DM via Chevallier-Polarski-Linder parametrization, and the constant non-null sound speed. We also consider the properties of neutrinos, such as the effective neutrino mass and the effective number of neutrino species as free parameters. We derive the constraints on this scenario by using the data from the Planck-2018 cosmic microwave background (CMB), baryonic acoustic oscillation (BAO) measurements, Pantheon+ compilation of Type Ia supernovae (SNe Ia), and some large scale structure (LSS) information from the cosmic shear surveys: Kilo Degree Survey (KiDS)-1000 and Dark Energy Survey (DES). We find constraints on the EoS and sound speed of DM very close to the null value in all the analyses, and thus no significant evidence is found beyond the standard CDM paradigm. In all the analyses, we find the significantly tight upper bounds on the sum of neutrino masses, and significantly lower mean values of $S_8$, which are in agreement with the LSS measurements. Thus, the well-known $S_8$ tension is reconciled in the considered model.
description: 10 pages, 3 Figure panels
Observation and control of hybrid spin-wave-Meissner-current transport modes
Creators: name: Borst, M.
name: Vree, P. H.
name: Lowther, A.
name: Teepe, A.
name: Kurdi, S.
name: Bertelli, I.
name: Simon, B. G.
name: Blanter, Y. M.
name: van der Sar, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Superconductors are materials with zero electrical resistivity and the ability to expel magnetic fields known as the Meissner effect. Their dissipationless diamagnetic response is central to magnetic levitation and circuits such as quantum interference devices. Here, we use superconducting diamagnetism to shape the magnetic environment governing the transport of spin waves - collective spin excitations in magnets that are promising on-chip signal carriers - in a thin-film magnet. Using diamond-based magnetic imaging, we observe hybridized spin-wave-Meissner-current transport modes with strongly altered, temperature-tunable wavelengths. We extract the temperature-dependent London penetration depth from the wavelength shifts and realize local control of spin-wave refraction using a focused laser. Our results demonstrate the versatility of superconductor-manipulated spin-wave transport and have potential applications in spin-wave gratings, filters, crystals and cavities.
description: main: 8 pages, 5 figures, supp: 15 pages, 6 figures