cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Time-resolved measurement of photon states using two-photon interference with photons from short-time reference pulses
Creators: name: Ren, Changliang
name: Hofmann, Holger F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: To fully utilize the energy-time degree of freedom of photons for optical quantum information processes, it is necessary to control and characterize the quantum states of the photons at extremely short time scales. For measurements beyond the time resolution of available detectors, two-photon interference with a photon in a short time reference pulse may be a viable alternative. In this paper, we derive the temporal measurement operators for the bunching statistics of a single photon input state with a reference photon. It is shown that the effects of the pulse shape of the reference pulse can be expressed in terms of a spectral filter selecting the bandwidth within which the measurement can be treated as an ideal projection on eigenstates of time. For full quantum tomography, temporal coherence can be determined by using superpositions of reference pulses at two different times. Moreover, energy-time entanglement can be evaluated based on the two-by-two entanglement observed in the coherences between pairs of detection times.
description: 6 pages, including 3 figures
A Search for Additional Planets in Five of the Exoplanetary Systems Studied by the NASA EPOXI Mission
Creators: name: Ballard, Sarah
name: Christiansen, Jessie L.
name: Charbonneau, David
name: Deming, Drake
name: Holman, Matthew J.
name: A'Hearn, Michael F.
name: Wellnitz, Dennis D.
name: Barry, Richard K.
name: Kuchner, Marc J.
name: Livengood, Timothy A.
name: Hewagama, Tilak
name: Sunshine, Jessica M.
name: Hampton, Don L.
name: Lisse, Carey M.
name: Seager, Sara
name: Veverka, Joseph F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present time series photometry and constraints on additional planets in five of the exoplanetary systems studied by the EPOCh (Extrasolar Planet Observation and Characterization) component of the NASA EPOXI mission: HAT-P-4, TrES-3, TrES-2, WASP-3, and HAT-P-7. We conduct a search of the high-precision time series for photometric transits of additional planets. We find no candidate transits with significance higher than our detection limit. From Monte Carlo tests of the time series using putative periods from 0.5 days to 7 days, we demonstrate the sensitivity to detect Neptune-sized companions around TrES-2, sub-Saturn-sized companions in the HAT-P-4, TrES-3, and WASP-3 systems, and Saturn-sized companions around HAT-P-7. We investigate in particular our sensitivity to additional transits in the dynamically favorable 3:2 and 2:1 exterior resonances with the known exoplanets: if we assume coplanar orbits with the known planets, then companions in these resonances with HAT-P-4b, WASP-3b, and HAT-P-7b would be expected to transit, and we can set lower limits on the radii of companions in these systems. In the nearly grazing exoplanetary systems TrES-3 and TrES-2, additional coplanar planets in these resonances are not expected to transit. However, we place lower limits on the radii of companions that would transit if the orbits were misaligned by 2.0 degrees and 1.4 degrees for TrES-3 and TrES-2, respectively.
description: 20 pages, 5 figures, accepted for publication in ApJ
The Wiedemann-Franz law in doped Mott insulators without quasiparticles
Creators: name: Wang, Wen O.
name: Ding, Jixun K.
name: Schattner, Yoni
name: Huang, Edwin W.
name: Moritz, Brian
name: Devereaux, Thomas P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Many metallic quantum materials display anomalous transport phenomena that defy a Fermi liquid description. Here, we use numerical methods to calculate thermal and charge transport in the doped Hubbard model and observe a cross-over separating high- and low-temperature behaviors. Distinct from the behavior at high temperatures, the Lorenz number $L$ becomes weakly doping dependent and less sensitive to parameters at low temperatures. At the lowest numerically accessible temperatures, $L$ roughly approaches the Wiedemann-Franz constant $L_0$, even in a doped Mott insulator that lacks well-defined quasiparticles. Decomposing the energy current operator indicates a compensation between kinetic and potential contributions, which may help to clarify the interpretation of transport experiments beyond Boltzmann theory in strongly correlated metals.
description: 15 pages, 4 figures. Supplementary Materials: 23 pages, 15 figures
Geschichte als Schulbuchtext. Eine narrativitätstheoretische vergleichende Analyse englisch- und deutschsprachiger Schulbücher. Band 1 / Volume 1
Creators: name: Sonnemann, Jan Willem
Publisher: name: Chair of Public History at University of Vienna
Year: 2023
Subjects: subject: History teachers
subject: Public history
subject: Imperialism
subject: Textbooks

description: In this thesis, the presentation of history in history textbooks for secondary schools was examined. The focus was on on the depiction of imperialism in German, US and English textbooks, published between 2008 to 2011.
The research design is based on the assumption that all representations of the past are constructed, intentional narratives. What is the didactic intention of the story. Taking into account the production, the analysis concentrated on the narrative order, on the references to history, and on the media used in the textbooks. The development of basic concepts was of central importance for the combination of these three focal points. They also made it possible to distinguish between design differences 'on the surface' and 'deeper' structural differences in a national and international comparison. What all the textbooks have in common, however, is the perspective of the colonial powers and the rudimentary formal classification of the materials. Likewise, the disclosure of the intentional, constructive character of the textbook narratives is largely missing.
Anachronicity and Transgression of Law between the Millennia – Summum Ius, Summa Iniuria
Creators: name: Wolski, Alina J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2021
Subjects: IUS/20 Filosofia del diritto

description: This article aims to identify the new tendencies in the German law and literature movement of the 21st century. For this purpose, the novel Spieltrieb by the German judge and author Juli Zeh serves as an example. It is going to be analysed about the question of the literary expression of criticism of the German legal system. The aim is to combine three aspects: homelessness as a consequence of age, a world that follows new mechanisms and the role of law in these circumstances. Finally, it will be addressed to what extent the law and literature movement of the 21st century programmatically stands for the disintegration of society and law. Thereby, classical philosophical ideas are used, which can be found in the novel.
Delphi as a space for elite interactions
Creators: name: Côté-Landry, Maude
Publisher: name: University of British Columbia
Year: 2014

description: The sanctuary of Apollo at Delphi has long been a popular subject for research among scholars, but the vast majority of studies have focused almost exclusively on the Delphic oracle. This thesis instead aims to explore in detail the use of the sanctuary as a space for elite interactions during the Archaic Period, an aspect of Delphi which has only briefly been mentioned by David Small (1994). More specifically, I analyse the nature of the Greek elite in order to determine how the characteristics of this social group led to their use of panhellenic sanctuaries such as Delphi as spaces of interaction and how those interactions were affected by the setting of the sanctuary. The first chapter focuses on establishing the nature of the Greek elite during the Archaic Period, focusing on the effects of the economic, military, and religious changes which took place during the 8th century BCE as well as on elements of the elite lifestyle such as guest friendships, marriages, and competition which encouraged interpolital interactions. I then examine Delphi’s status as an interstate sanctuary and the advantages provided by such sanctuaries which led to their being used as spaces for elite interactions. The second chapter examines a variety of different elite interactions which took place within the sanctuary at Delphi and explores how each interaction was shaped by the elite characteristics detailed in the first chapter. I show how the regular gatherings of a large number of elites made Delphi an advantageous site for interpolital interactions such as the making of guest friendships and marriage alliances as well as for competitive interactions such as displays of wealth through dedications and athletic competitions. This study demonstrates that the developments of the 8th century BCE affected the nature of the Greek elite in such a way that it pushed their interactions and private affairs outside the territory of the polis and into interstate sanctuaries such as Delphi. The opportunity for regular gatherings at Delphi coupled with the elite inclination towards interpolital interactions and agonistic displays also encouraged a variety of Greek elite interactions within the Delphi sanctuary.
On graphs related to co-maximal ideals of a commutative ring
Creators: name: Wu, Tongsuo
name: Ye, Meng
name: Lu, Dancheng
name: Yu, Houyi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: This paper studies the co-maximal graph $\Om(R)$, the induced subgraph $\G(R)$ of $\Om(R)$ whose vertex set is $R\setminus (U(R)\cup J(R))$ and a retract $\G_r(R)$ of $\G(R)$, where $R$ is a commutative ring. We show that the core of $\G(R)$ is a union of triangles and rectangles, while a vertex in $\G(R)$ is either an end vertex or a vertex in the core. For a non-local ring $R$, we prove that both the chromatic number and clique number of $\G(R)$ are identical with the number of maximal ideals of $R$. A graph $\G_r(R)$ is also introduced on the vertex set $\{Rx|\,x\in R\setminus (U(R)\cup J(R))\}$, and graph properties of $\G_r(R)$ are studied.
description: 14pages, 4 figures
Corporate Governance of the Japanese Enterprise
Creators: name: Dissabandara, Hareedra
name: Nakagaki, Noboru
Publisher: name: figshare
Year: 2021
Subjects: subject: 150303 Corporate Governance and Stakeholder Engagement
subject: FOS: Economics and business
subject: 150201 Finance

description: While globalization and IT developments are accelerated, the' management of the enterprise got a different path and required a proper governance for Japanese corporation. Today’s enterprise adapts itself to the change in the socio-economic system that changes rapidly, suitably, and it is developing management activities in this era of mega competition when only the enterprise which always creates value to the enterprise can survive. Moreover, it is the fulfillment of social responsibility of the corporate ethics which reach even the objectives of environmental management. The most recent research findings categorically evidence that a speedy diversification is taking place among Japanese corporations in terms of corporate governance. Amongst many voluntary and legislative reforms, introduction of executive officer system and outside director system are attractive. The executive officer system is flattering more popular at an increasing rate. Meanwhile, the latest corporate governance reforms were able to contribute for the enhancement of the corporate performance of the Japanese enterprises. The latest studies confirm, in statistical terms, the relationship between governance reforms and corporate performance is positively significant.
Mass-loss rates for transiting exoplanets
Creators: name: Ehrenreich, David
name: Désert, Jean-Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Exoplanets at small orbital distances from their host stars are submitted to intense levels of energetic radiations, X-rays and extreme ultraviolet (EUV). Depending on the masses and densities of the planets and on the atmospheric heating efficiencies, the stellar energetic inputs can lead to atmospheric mass loss. These evaporation processes are observable in the ultraviolet during planetary transits. The aim of the present work is to quantify the mass-loss rates (dm/dt), heating efficiencies (eta), and lifetimes for the whole sample of transiting exoplanets, now including hot jupiters, hot neptunes, and hot super-earths. The mass-loss rates and lifetimes are estimated from an "energy diagram" for exoplanets, which compares the planet gravitational potential energy to the stellar X/EUV energy deposited in the atmosphere. We estimate the mass-loss rates of all detected transiting planets to be within 10^6 to 10^13 g/s for various conservative assumptions. High heating efficiencies would imply that hot exoplanets such the gas giants WASP-12b and WASP-17b could be completely evaporated within 1 Gyr. We further show that the heating efficiency can be constrained when dm/dt is inferred from observations and the stellar X/EUV luminosity is known. This leads us to suggest that eta ~ 100% in the atmosphere of the hot jupiter HD209458b, while it could be lower for HD189733b. Simultaneous observations of transits in the ultraviolet and X-rays are necessary to further constrain the exospheric properties of exoplanets.
description: 10 pages, 5 figures, 2 tables. Accepted for publication in Astronomy & Astrophysics
Noise, sign problems, and statistics
Creators: name: Endres, Michael G.
name: Kaplan, David B.
name: Lee, Jong-Wan
name: Nicholson, Amy N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show how sign problems in simulations of many-body systems can manifest themselves in the form of heavy-tailed correlator distributions, similar to what is seen in electron propagation through disordered media. We propose an alternative statistical approach for extracting ground state energies in such systems, illustrating the method with a toy model and with lattice data for unitary fermions.
description: 4 pages, 4 figures
Vanguardia Obrera, 295, Nueva Época año XV
Creators: name: PCE(ML)
Publisher: name: Zenodo
Year: 2019

description: Órgano de expresión del Partido Comunista de España (M-L). Artículos principales que contiene: El program económico del Gobierno: Una declaración de guerra contra la clase obrera y el pueblo. Euskadi. Rechazo total del Estatuto. El III Encuentro Internacional de la Juventud: Un completo éxito para la causa del internacionalismo revolucionario. El programa económico y la colaboración de clases. Regulación de empleo y cierre de empresas: una práctica que prospera en todo el país.
Polarization compensation methods for quantum communication networks
Creators: name: Peranic, Matej
name: Clark, Marcus
name: Wang, Rui
name: Bahrani, Sima
name: Alia, Obada
name: Wengerowsky, Soren
name: Radman, Anton
name: Loncaric, Martin
name: Stipcevic, Mario
name: Rarity, John
name: Nejabati, Reza
name: Joshi, Siddarth K
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The information-theoretic unconditional security offered by quantum key distribution has spurred the development of larger quantum communication networks. However, as these networks grow so does the strong need to reduce complexity and overheads. Polarization based entanglement distribution networks are a promising approach due to their scalability and lack of trusted nodes. Nevertheless, they are only viable if the birefringence of all optical distribution fibres in the network is compensated to preserve the polarization based quantum state. The brute force approach would require a few hundred fibre polarization controllers for even a moderately sized network. Instead, we propose and investigate four different methods of polarization compensation. We compare them based on complexity, effort, level of disruption to network operations and performance.
Deep Wide-Field Imaging down to the oldest Main Sequence Turnoffs in the Sculptor dwarf spheroidal galaxy
Creators: name: de Boer, T. J. L.
name: Tolstoy, E.
name: Saha, A.
name: Olsen, K.
name: Irwin, M. J.
name: Battaglia, G.
name: Hill, V.
name: Shetrone, M. D.
name: Fiorentino, G.
name: Cole, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present wide-field photometry of resolved stars in the nearby Sculptor dwarf spheroidal galaxy using CTIO/MOSAIC, going down to the oldest Main Sequence Turn-Off. The accurately flux calibrated wide field Colour-Magnitude Diagrams can be used to constrain the ages of different stellar populations, and also their spatial distribution. The Sculptor dSph contains a predominantly ancient stellar population (>10 Gyr old) which can be easily resolved into individual stars. A galaxy dominated by an old population provides a clear view of ancient processes of galaxy formation unimpeded by overlying younger populations. By using spectroscopic metallicities of RGB stars in combination with our deep Main Sequence Turn-Off photometry we can constrain the ages of different stellar populations with particular accuracy. We find that the known metallicity gradient in Sculptor is well matched to an age gradient. This is the first time that this link with age has been directly quantified. This gradient has been previously observed as a variation in Horizontal Branch properties and is now confirmed to exist for Main Sequence Turn-Offs as well. It is likely the Sculptor dSph first formed an extended metal-poor population at the oldest times, and subsequent more metal-rich, younger stars were formed more towards the centre until the gas was depleted or lost roughly 7 Gyr ago. The fact that these clear radial gradients have been preserved up to the present day is consistent with the apparent lack of signs of recent tidal interactions.
description: 28 pages, 22 figures
The general approach to the critical phase with coupled quasiperiodic chains
Creators: name: Lin, Xiaoshui
name: Chen, Xiaoman
name: Guo, Guang-Can
name: Gong, Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In disordered systems, wave functions in the Schrödinger equation may exhibit a transition from the extended phase to the localized phase, in which the states at the boundaries or mobility edges may exhibit multifractality. Meanwhile, the Critical Phase (CP), where all states exhibit multifractal structures, has also attracted much attention in the past decades. However, a generic way to construct the CP on demand still remains elusive. Here, a general approach for this phase is presented using two coupled quasiperiodic chains, where the chains are chosen so that before coupling one of them has extended states while the other one has localized states. We demonstrate the existence of CP in the overlapped spectra in the presence of inter-chain coupling using fractal dimension and minimal scaling index based on multifractal analysis. Then we examine the generality of this physics by changing the forms of inter-chain coupling and quasiperiodic potential, where the CP also emerges in the overlapped spectra. We account for the emergence of this phase as a result of effective unbounded potential, which yields singular continuous spectra and excludes the extended states in the overlapped regimes. Finally, the realization of this CP in the continuous model using ultracold atoms with bichromatic incommensurate optical lattice is also discussed. Due to the tunability of the two chains, this work provides a general approach to realizing the CP in a tunable way. This approach may have wide applications in the experimental detection of CP and can be generalized to much more intriguing physics in the presence of interaction for the many-body CP.
description: 23 pages, 17 figures
Dynamical mean-field theory for bosons
Creators: name: Anders, Peter
name: Gull, Emanuel
name: Pollet, Lode
name: Troyer, Matthias
name: Werner, Philipp
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the recently developed bosonic dynamical mean-field (B-DMFT) framework, which maps a bosonic lattice model onto the selfconsistent solution of a bosonic impurity model with coupling to a reservoir of normal and condensed bosons. The effective impurity action is derived in several ways: (i) as an approximation to the kinetic energy functional of the lattice problem, (ii) using a cavity approach, and (iii) by using an effective medium approach based on adding a one-loop correction to the selfconsistently defined condensate. To solve the impurity problem, we use a continuous-time Monte Carlo algorithm based on a sampling of a perturbation expansion in the hybridization functions and the condensate wave function. As applications of the formalism we present finite temperature B-DMFT phase diagrams for the bosonic Hubbard model on a 3d cubic and 2d square lattice, the condensate order parameter as a function of chemical potential, critical exponents for the condensate, the approach to the weakly interacting Bose gas regime for weak repulsions, and the kinetic energy as a function of temperature.
description: 26 pages, 19 figures
Convergence Rates in L^2 for Elliptic Homogenization Problems
Creators: name: Kenig, Carlos E.
name: Lin, Fanghua
name: Shen, Zhongwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study rates of convergence of solutions in L^2 and H^{1/2} for a family of elliptic systems {L_ε} with rapidly oscillating oscillating coefficients in Lipschitz domains with Dirichlet or Neumann boundary conditions. As a consequence, we obtain convergence rates for Dirichlet, Neumann, and Steklov eigenvalues of {L_ε}. Most of our results, which rely on the recently established uniform estimates for the L^2 Dirichlet and Neumann problems in \cite{12,13}, are new even for smooth domains.
description: 25 pages
Automatic vertebrae localization, identification, and segmentation using deep learning and statistical models
Creators: name: Suzani, Amin
Publisher: name: University of British Columbia
Year: 2014

description: Automatic localization and identification of vertebrae in medical images of the spine are core requirements for building computer-aided systems for spine diagnosis. Automated algorithms for segmentation of vertebral structures can also benefit these systems for diagnosis of a range of spine pathologies. The fundamental challenges associated with the above-stated tasks arise from the repetitive nature of vertebral structures, restrictions in field of view, presence of spine pathologies or surgical implants, and poor contrast of the target structures in some imaging modalities. This thesis presents an automatic method for localization, identification, and segmentation of vertebrae in volumetric computed tomography (CT) scans and magnetic resonance (MR) images of the spine. The method makes no assumptions about which section of the vertebral column is visible in the image. An efficient deep learning approach is used to predict the location of each vertebra based on its contextual information in the image. Then, a statistical multi-vertebrae model is initialized by the localized vertebrae from the previous step. An iterative expectation maximization technique is used to register the statistical multi-vertebrae model to the edge points of the image in order to achieve a fast and reliable segmentation of vertebral bodies. State-of-the-art results are obtained for vertebrae localization in a public dataset of 224 arbitrary-field-of-view CT scans of pathological cases. Promising results are also obtained from quantitative evaluation of the automated segmentation method on volumetric MR images of the spine.
MPEC 2023-X121 : 2023 XY2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XY2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Redução nas concentrações de poluentes durante o surto de COVID-19 na Cidade de São Paulo
Creators: name: Freitas, Edmilson
name: Andrade, Maria de Fatima
name: Ibarra-Espinosa, Sergio
name: Calderon, Mario Eduardo Gavidia
Publisher: name: figshare
Year: 2021
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences
subject: 50205 Environmental Management

description: Este artigo descreve as reduções observadas na concentrações de alguns poluentes atmosféricos durante as primeiras semanas da pandemia do novo coronavirus em São Paulo.
Fitness in time-dependent environments includes a geometric contribution
Creators: name: Tanase-Nicola, Sorin
name: Nemenman, Ilya
Publisher: name: arXiv
Year: 2011
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Phenotypic evolution implies sequential fixations of new genomic sequences. The speed at which these mutations fixate depends, in part, on the relative fitness (selection coefficient) of the mutant vs. the ancestor. Using a simple population dynamics model we show that the relative fitness in dynamical environments is not equal to the fitness averaged over individual environments. Instead it includes a term that explicitly depends on the sequence of the environments. This term is geometric in nature and depends only on the oriented area enclosed by the trajectory taken by the system in the environment state space. It is related to the well-studied geometric phases in classical and quantum physical systems. We discuss possible biological implications of these observations, focusing on evolution of novel metabolic or stress-resistant functions.
La generalizzazione della privazione di libertà dei richiedenti protezione internazionale nello spazio giuridico europeo
Creators: name: Pomares Cintas, Esther
Publisher: name: Altre Modernità
Year: 2019

description: Traduzione dallo spagnolo di Paolo La Valle
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Vision-Based Uncertainty-Aware Motion Planning based on Probabilistic Semantic Segmentation
Creators: name: Römer, Ralf
name: Lederer, Armin
name: Tesfazgi, Samuel
name: Hirche, Sandra
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: For safe operation, a robot must be able to avoid collisions in uncertain environments. Existing approaches for motion planning under uncertainties often assume parametric obstacle representations and Gaussian uncertainty, which can be inaccurate. While visual perception can deliver a more accurate representation of the environment, its use for safe motion planning is limited by the inherent miscalibration of neural networks and the challenge of obtaining adequate datasets. To address these limitations, we propose to employ ensembles of deep semantic segmentation networks trained with massively augmented datasets to ensure reliable probabilistic occupancy information. To avoid conservatism during motion planning, we directly employ the probabilistic perception in a scenario-based path planning approach. A velocity scheduling scheme is applied to the path to ensure a safe motion despite tracking inaccuracies. We demonstrate the effectiveness of the massive data augmentation in combination with deep ensembles and the proposed scenario-based planning approach in comparisons to state-of-the-art methods and validate our framework in an experiment with a human hand as an obstacle.
Old slavery seen through modern eyes:  Octavia E. Butler’s Kindred and Haile Gerima’s Sankofa
Creators: name: Elia, Adriano
Publisher: name: Altre Modernità
Year: 2019
Subjects: Kindred; Sankofa; Slavery; Afrofuturism; Critical Race Theory; Time travel

description: Time travel has been at times employed by writers and filmmakers alike as a means for addressing sociopolitical discourses. This is the case of the novel Kindred (1979) by Octavia E. Butler, and the film Sankofa (1993) by Haile Gerima. In both works, the topic of spatio-temporal migration is dealt with in such a way as to make a political statement in order to elicit a response on the part of the reader/viewer. Tightroping between fantasy and slave narrative, Butler and Gerima use time travel as a device investigating the amplified effect of old slavery on contemporary people. This essay approaches the idea of seeing old slavery through modern eyes. Experiencing the senselessness of old slavery from the apparently unreal perspective of a contemporary outsider may inspire the reader/viewer to minimize the typical desensitization with which contemporary slavery - still a very tangible phenomenon - more often than not is met today
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Search for a W' boson decaying to a muon and a neutrino in pp collisions at sqrt(s) = 7 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new heavy gauge boson, W', decaying to a muon and a neutrino, is searched for in pp collisions at a centre-of-mass of 7 TeV. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 36 inverse picobarns. No significant excess of events above the standard model expectation is found in the transverse mass distribution of the muon-neutrino system. Masses below 1.40 TeV are excluded at the 95% confidence level for a sequential standard-model-like W'. The W' mass lower limit increases to 1.58 TeV when the present analysis is combined with the CMS result for the electron channel.
A possible sequential star formation in the giant molecular cloud G174+2.5
Creators: name: Camargo, D.
name: Bonatto, C.
name: Bica, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the nature of 14 embedded clusters (ECs) related to a group of four H II regions Sh2-235, Sh2-233, Sh2-232, and Sh2-231 in the giant molecular cloud G174 + 2.5. Projected towards the Galactic anticentre, these objects are a possible example of the collect and collapse scenario. We derive astrophysical parameters (age, reddening, distance, core and cluster radii) for the ECs and investigate the relationship among their parameters. Parameters are derived with field decontaminated 2MASS colour-magnitude diagrams (CMDs) and stellar radial density profiles (RDPs). The CMDs of these young clusters are characterised by a poorly-populated main sequence and a significant number of pre-main sequence stars, affected by differential reddening. The ECs are KKC 11, FSR 784, Sh2-235 E2, Sh2-235 Cluster, Sh2-233SE Cluster, BDSB 73, Sh2-235B Cluster, BDSB 72, BDSB 71, Sh2-232 IR, PCS 2, and the newly found clusters CBB 1 and CBB 2. We were able to derive fundamental parameters for all ECs in the sample. Structural parameters are derived for FSR 784, Sh2-235 Cluster and Sh2-235E2.
description: 14 pages and 15 figures; MNRAS 2011
“Mediating” modern-day slavery across the Mediterranean: A linguistic investigation of news discourse
Creators: name: Nisco, Maria Cristina
Publisher: name: Altre Modernità
Year: 2019
Subjects: slavery; migration; Mediterranean; news discourse

description: Ever since the regime of Gaddafi collapsed in 2011, Libya has become the main gateway for people attempting to reach Europe by sea and the focal point of smuggling networks. While such humanitarian crisis is well-documented, the International Organization for Migration reported the existence of slave markets in Tripoli where Africans were sold in the open. This trade was largely still undocumented, until the CNN released a video showing migrants being sold by an auctioneer for the equivalent of $400. International news agencies and networks gave extensive coverage to the event, depicting Tripoli as the city of modern-day slave markets. This paper analyses the reporting following the release of the CNN footage, comparing and contrasting the media construal of the phenomenon from a ‘Southern’ and ‘Northern’ perspective metaphorically standing for the two shores of the Mediterranean Sea. It, therefore, takes into account a corpus of news reports published by Al-Jazeera, Al-Araby, Middle East Eye, on the one hand, and BBC, Reuters and EuroNews, on the other, over a time-span ranging from November (when the video was released) to December 2017. Such news networks were chosen since the former are the main English-language, independent sources of news concerning the Arab world, while the latter are the principal English-language media outlets in Europe. Examination of the texts comprised in the corpus is meant to uncover not only the differences and similarities in the linguistic construal of the event, but is also deemed to offer a lens to frame the power-relations embedded in the spatial and symbolic opposition between Libya and the European countries, thus highlighting how different geo-political actors are discursively portrayed.
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Predicting the Future of AI with AI: High-quality link prediction in an exponentially growing knowledge network
Creators: name: Krenn, Mario
name: Buffoni, Lorenzo
name: Coutinho, Bruno
name: Eppel, Sagi
name: Foster, Jacob Gates
name: Gritsevskiy, Andrew
name: Lee, Harlin
name: Lu, Yichao
name: Moutinho, Joao P.
name: Sanjabi, Nima
name: Sonthalia, Rishi
name: Tran, Ngoc Mai
name: Valente, Francisco
name: Xie, Yangxinyu
name: Yu, Rose
name: Kopp, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A tool that could suggest new personalized research directions and ideas by taking insights from the scientific literature could significantly accelerate the progress of science. A field that might benefit from such an approach is artificial intelligence (AI) research, where the number of scientific publications has been growing exponentially over the last years, making it challenging for human researchers to keep track of the progress. Here, we use AI techniques to predict the future research directions of AI itself. We develop a new graph-based benchmark based on real-world data -- the Science4Cast benchmark, which aims to predict the future state of an evolving semantic network of AI. For that, we use more than 100,000 research papers and build up a knowledge network with more than 64,000 concept nodes. We then present ten diverse methods to tackle this task, ranging from pure statistical to pure learning methods. Surprisingly, the most powerful methods use a carefully curated set of network features, rather than an end-to-end AI approach. It indicates a great potential that can be unleashed for purely ML approaches without human knowledge. Ultimately, better predictions of new future research directions will be a crucial component of more advanced research suggestion tools.
description: 13 pages, 7 figures. Comments welcome!
Ultrahigh Energy Cosmic Rays
Creators: name: Letessier-Selvon, Antoine
name: Stanev, Todor
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This is a review of the most resent results from the investigation of the Ultrahigh Energy Cosmic Rays, particles of energy exceeding 10$^{18}$ eV. After a general introduction to the topic and a brief review of the lower energy cosmic rays and the detection methods, the two most recent experiments, the High Resolution Fly's Eye (HiRes) and the Southern Auger Observatory are described. We then concentrate on the results from these two experiments on the cosmic ray energy spectrum, the chemical composition of these cosmic rays and on the searches for their sources. We conclude with a brief analysis of the controversies in these results and the projects in development and construction that can help solve the remaining problems with these particles.
description: 40 pages, 27 figures
Lo schiavo al museo. Spunti di riflessione sul trattamento dei temi di schiavitù e tratta atlantica nei musei della Francia metropolitana
Creators: name: Landi, Veronica
Publisher: name: Altre Modernità
Year: 2019
Subjects: Schiavitù; tratta degli schiavi; museo; rappresentazione; memoria; commemorazione

description: The theme of contemporary slavery is necessarily linked to the history of slavery, especially as a part of former colonialist countries’ past (and identity). It is therefore particularly relevant to consider how public memory represents "historical" slavery through moments of commemoration, speeches, books, monuments and museums. This article proposes a brief analysis of how the museums dedicated to the themes of slavery and slave trade in metropolitan France treat the subjects of slavery and slave trade as a part of the nation’s past.
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
The GROUSE project II: Detection of the Ks-band secondary eclipse of exoplanet HAT-P-1b
Creators: name: de Mooij, E. J. W.
name: de Kok, R. J.
name: Nefs, S. V.
name: Snellen, I. A. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: Only recently it has become possible to measure the thermal emission from hot-Jupiters at near-Infrared wavelengths using ground-based telescopes, by secondary eclipse observations. This allows the planet flux to be probed around the peak of its spectral energy distribution, which is vital for the understanding of its energy budget. Aims: The aim of the reported work is to measure the eclipse depth of the planet HAT-P-1b at 2.2micron. This planet is an interesting case, since the amount of stellar irradiation it receives falls in between that of the two best studied systems (HD209458 and HD189733), and it has been suggested to have a weak thermal inversion layer. Methods: We have used the LIRIS instrument on the William Herschel Telescope (WHT) to observe the secondary eclipse of HATP-1b in the Ks-band, as part of our Ground-based secondary eclipse (GROUSE) project. The observations were done in staring mode, while significantly defocusing the telescope to avoid saturation on the K=8.4 star. With an average cadence of 2.5 seconds, we collected 6520 frames during one night. Results: The eclipse is detected at the 4sigma level, the measured depth being 0.109+/-0.025%. The uncertainties are dominated by residual systematic effects, as estimated from different reduction/analysis procedures. The measured depth corresponds to a brightness temperature of 2136+150-170K. This brightness temperature is significantly higher than those derived from longer wavelengths, making it difficult to fit all available data points with a plausible atmospheric model. However, it may be that we underestimate the true uncertainties of our measurements, since it is notoriously difficult to assign precise statistical significance to a result when systematic effects are important.
description: 7 pages, 10 figures, Accepted for publication in A&A
Mixed moments and the joint distribution of random groups
Creators: name: Lee, Jungin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: Group Theory (math.GR)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the joint distribution of random abelian and non-abelian groups. In the abelian case, we prove several universality results for the joint distribution of the multiple cokernels for random $p$-adic matrices. In the non-abelian case, we compute the joint distribution of random groups given by the quotients of the free profinite group by random relations. In both cases, we generalize the known results on the distribution of the cokernels of random $p$-adic matrices and random groups. Our proofs are based on the observation that mixed moments determine the joint distribution of random groups, which extends the works of Wood for abelian groups and Sawin for non-abelian groups.
description: 29 pages, to appear in J. Algebra
Lo status dello schiavo per l’islam:  cenni storici,  questioni terminologiche e legali
Creators: name: Lombezzi, Letizia
Publisher: name: Altre Modernità
Year: 2019
Subjects: Slaves and Islam; slave soldiers; slavery Arab countries

description: Arabic terms and translations for “slaves” – either male or female − clearly sum up the functions assigned to them: male slaves are mostly servants, military personnel or guardians, whereas the females areusually maids or musicians-prostitutes. Historically, slavery has been allowed and practiced since the beginning of the Islamic era. In fact, the Koran regulates some aspects of it, especially related to moral issues or relationships between men and women. The Islamic Law too, and the Maliki school in particular, mentions legal cases concerning the sale of slaves (hence, it must have been aquite common business). Additionally, the events that took place in Iraq and Egypt between the 9th and 13th century prove that the power in charge made use of slaves, especially for filling specific offices in the military field. It is exactly from this sector that a new caste first emerged, and then became gradually stronger. It initially defended and later inherited the management of the Arab-Islamic empire
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà
Loss and decoherence at the quantum Hall - superconductor interface
Creators: name: Zhao, Lingfei
name: Iftikhar, Zubair
name: Larson, Trevyn F. Q.
name: Arnault, Ethan G.
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Amet, Francois
name: Finkelstein, Gleb
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We perform a systematic study of Andreev conversion at the interface between a superconductor and graphene in the quantum Hall (QH) regime. We find that the probability of Andreev conversion from electrons to holes follows an unexpected but clear trend: the dependencies on temperature and magnetic field are nearly decoupled. We discuss these trends and the role of the superconducting vortices, whose normal cores could both absorb and dephase the individual electrons in a QH edge. Our study may pave the road to engineering future generation of hybrid devices for exploiting superconductivity proximity in chiral channels.
Enhanced Secrecy in Optical Communication using Speckle from Multiple Scattering Layers
Creators: name: Rates, Alfredo
name: Vrehen, Joris
name: Mulder, Bert
name: IJzerman, Wilbert L.
name: Vos, Willem L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We study the secrecy of an optical communication system with two scattering layers, to hide both the sender and receiver, by measuring the correlation of the intermediate speckle generated between the two layers. The binary message is modulated as spatially shaped wavefronts, and the high number of transmission modes of the scattering layers allows for many uncorrelated incident wavefronts to send the same message, making it difficult for an attacker to intercept or decode the message and thus increasing secrecy. We collect 50,000 intermediate speckle patterns and analyze their correlation distribution using Kolmogorov-Smirnov (K-S) test. We search for further correlations using the K-Means and Hierarchical unsupervised classification algorithms. We find no correlation between the intermediate speckle and the message, suggesting a person-in-the-middle attack is not possible. This method is compatible with any digital encryption method and is applicable for codifications in optical wireless communication (OWC).
La narrazione dei corpi nell’edificazione “eurocentrica-androcentrica” coloniale: terra femminilizzata, reificazione e subalternità
Creators: name: Sugamele, Laura
Publisher: name: Altre Modernità
Year: 2019
Subjects: Colonialism; phallocentrism; racism; feminization of the territory; sexualization; feminist theory

description: In this essay the aim will be to reflect on the connection between colonization and feminization of the conquered territory, considering that in the asymmetric scheme of patriarchal domination, the territory or nation includes and incorporates gender, and gender is the sexual center of recognition in the construction of territorial and colonial identities. The analysis will refer to the intersections between sex and race, fundamental elements in the dichotomous domination-oppression mechanism, which is very strong in the colonial conquest phase. Colonialism emerges, therefore, as a masculine and phallocentric dimension, in which the female body becomes the center of production of the sexualization of the body inscribed within a social and public racial reproductive process. Feminism, especially the postcolonial theoretical horizon, has reflected on the connection of colonialism with racism and sexism, as elements aimed at a process of othering the 'other world' with a connotation of permanence. In this perspective, the categorization of the "Third World" woman – as a sexually oppressed woman – is interpreted in a post-modern key of colonizing misogyny that has influences in today's society, and this conceptualization is linked to the opposition between "western" feminism and "non-western" feminism.
description: Altre Modernità, 2019: NUMERO SPECIALE: Di nuove e vecchie schiavitù: storie di dominio, lotte per la libertà