cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dispersion of Slow Magnetoacoustic Waves in the Active Region Fan Loops Introduced by Thermal Misbalance
Creators: name: Belov, Sergey
name: Molevich, Nonna
name: Zavershinskii, Dmitrii
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Slow magnetoacoustic waves observed in the solar corona are used as seismological probes of plasma parameters. It has been shown that dispersion properties of such waves can vary significantly under the influence of the wave-induced thermal misbalance. In the current research, we study the effect of misbalance on waves inside the magnetic-flux tube under the second-order thin-flux-tube approximation. Using the parameters of active region fan coronal loops, we calculated wave properties such as the phase speed and decrement. It is shown that neglecting thermal misbalance may be the reason for the substantial divergence between seismological and spectrometric estimations of plasma parameters. We also show that the frequency dependence of phase speed is affected by two features, namely the geometric dispersion and the dispersion caused by the thermal misbalance. In contrast to the phase speed, the wave decrement primarily is affected by the thermal misbalance only. The dependencies of the phase speed and decrement of the slow wave on magnetic field and tube cross-section are also analyzed.
VATANPARVARLIK KO'NIKMALARINI SHAKLLANTIRISHDA RIVOJLANGAN MAMLAKATLAR TAJRIBASINING O'ZIGA XOS XUSUSIYATLARI
Creators: name: Saparov, Bobir
name: Ablakulov, Salaxiddin
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada vatanparvarlikni amalga oshirishda yagona yondashuvni ishlab chiqishda siyosiy institutlar va fuqarolik jamiyati sa’y-harakatlarini birlashtirish zarurligi asoslab berilgan. Bundan tashqari, AQSH va Xitoy kabi rivojlangan mamlakatlarda vatanparvarlikni shakllantirishning asosiy jihatlari ochib berilgan. Xorijiy mamlakatlarda vatanparvarlikni shakllantirish tarixiy, madaniy, axloqiy, mafkuraviy va hayotiy qadriyatlarning rivojlanishiga muvofiq amalga oshiriladi: AQShda - "Novus Ordo Seclorum" ("Yangi dunyo tartibi" yoki " Yangi davr ordeni") va Xitoyda - "Xalqga xizmat qiling!
A GIS Data Realistic Road Generation Approach for Traffic Simulation
Creators: name: Amara, Yacine
name: Amamra, Abdenour
name: Daheur, Yasmine
name: Saichi, Lamia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computational Geometry (cs.CG)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Road networks exist in the form of polylines with attributes within the GIS databases. Such a representation renders the geographic data impracticable for 3D road traffic simulation. In this work, we propose a method to transform raw GIS data into a realistic, operational model for real-time road traffic simulation. For instance, the proposed raw to simulation ready data transformation is achieved through several curvature estimation, interpolation/approximation, and clustering schemes. The obtained results show the performance of our approach and prove its adequacy to real traffic simulation scenario as can be seen in this video 1 .
description: Accepted in Federated Conference on Computer Science and Information Systems (FedCSIS)
Dynamic correlations in an ordered c(2$\times$2) lattice gas
Creators: name: Argyrakis, P.
name: Maragakis, M.
name: Chumak, O.
name: Zhugayevych, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We obtain the dynamic correlation function of two-dimensional lattice gas with nearest-neighbor repulsion in ordered c(2$\times$2) phase (antiferromagnetic ordering) under the condition of low concentration of structural defects. It is shown that displacements of defects of the ordered state are responsible for the particle number fluctuations in the probe area. The corresponding set of kinetic equations is derived and solved in linear approximation on the defect concentration. Three types of strongly correlated complex jumps are considered and their contribution to fluctuations is analysed. These are jumps of excess particles, vacancies and flip-flop jumps. The kinetic approach is more general than the one based on diffusion-like equations used in our previous papers. Thus, it becomes possible to adequately describe correlations of fluctuations at small times, where our previous theory fails to give correct results. Our new analytical results for fluctuations of particle number in the probe area agree well with those obtained by Monte Carlo simulations.
description: 10 pages, 7 figures
Real-time multiview data fusion for object tracking with RGBD sensors
Creators: name: Amamra, Abdenour
name: Aouf, Nabil
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a new approach to accurately track a moving vehicle with a multiview setup of red-green-blue depth (RGBD) cameras. We first propose a correction method to eliminate a shift, which occurs in depth sensors when they become worn. This issue could not be otherwise corrected with the ordinary calibration procedure. Next, we present a sensor-wise filtering system to correct for an unknown vehicle motion. A data fusion algorithm is then used to optimally merge the sensor-wise estimated trajectories. We implement most parts of our solution in the graphic processor. Hence, the whole system is able to operate at up to 25 frames per second with a configuration of five cameras. Test results show the accuracy we achieved and the robustness of our solution to overcome uncertainties in the measurements and the modelling.
description: Accepted in Robotica
Towards real time EMG analysis
Creators: name: Kenward, Gary Wayne
Publisher: name: University of British Columbia
Year: 2010

description: Techniques for automatic recording and analyzing single motor unit action potentials in real time have been studied. A model of the human motor unit has been derived. The muscle fibers were modelled with current dipoles and randomly distributed within the motor unit cross section according to a bivariate Gaussian, or binormal, probability density function. Computer simulations were performed with the model using parameters measured for the human biceps brachii. The single fiber action potentials generated by the current dipoles were summed at a recording site to produce a simulated single motor unit action potential. Analysis of the motor unit model and the potentials generated showed that the single motor unit action potentials of interest were recorded from well within the motor unit territory, and that the potentials formed were influenced mainly by the nearby fibers. The single motor unit action potential amplitude and duration were found to have a non-linear dependence upon the radius of the recording site from the motor unit center. The relationship between amplitude and duration was found to be linear but subject to random variations due to the influence of nearby fibers. The behaviour of the simulated single motor unit action potentials agreed with clinical observations. A three stage real time processing system was designed. The signal characteristics of clinically recorded electromyographic activity at low contraction levels were analyzed, and the first stage of pre-filtering designed to reduce the required sampling rate, and increase the signal to noise ratio without distorting the single motor unit action potentials. The second stage of processing was based on an adaptive matched filter with dual detection thresholds. The final stage used feature classification of the detected single motor unit action potentials to remove potentials not from the selected motor unit. A non-real time software implementation of the processing system demonstrated that large ensembles of single motor unit action potentials could be acquired from relatively short recordings of electromyographic activity, with few detection errors.
Quasiparticle Energies and Band Gaps of Graphene Nanoribbons
Creators: name: Yang, Li
name: Park, Cheol-Hwan
name: Son, Young-Woo
name: Cohen, Marvin L.
name: Louie, Steven G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present calculations of the quasiparticle energies and band gaps of graphene nanoribbons (GNRs) carried out using a first-principles many-electron Green's function approach within the GW approximation. Because of the quasi-one-dimension nature of a GNR, electron-electron interaction effects due to the enhanced screened Coulomb interaction and confinement geometry greatly influence the quasiparticle band gap. Compared with previous tight-binding and density functional theory studies, our calculated quasiparticle band gaps show significant self-energy corrections for both armchair and zigzag GNRs, in the range of 0.5-3.0 eV for ribbons of width 2.4-0.4 nm. The quasiparticle band gaps found here suggest that use of GNRs for electronic device components in ambient conditions may be viable.
description: 5 pages and 4 figures
SPICE Modeling of Si, GaN and SiC Power FET Devices
Creators: name: Tudor, Bogdan
Publisher: name: Zenodo
Year: 2023

description: Contents

• Introduction• SPICE Models for GaN and SiC FET• Modeling Power FET-specific Capacitances• General Power FET Model Extraction Methodology• Advantages of TCAD-based SPICE Modeling• SPICE Modeling Examples of Si, GaN and SiC Devices• Conclusions
Sigma-model analysis of $SU(3)$ antiferromagnetic spins on the triangular lattice
Creators: name: Takahashi, Itsuki
name: Tanizaki, Yuya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using field-theoretic techniques, we study the $SU(3)$ analogue of anti-ferromagnetic Heisenberg spin model on the triangular lattice putting the $p$-box symmetric representation on each site. Taking the large-$p$ limit, we show that the low-energy effective theory is described by a $(2+1)$-dimensional relativistic $SU(3)/U(1)^2$ nonlinear sigma model. Since the target space has a nontrivial homotopy $π_2(SU(3)/U(1)^2)\simeq \mathbb{Z}^2$, this model has two kinds of magnetic skyrmions, which can be created and annihilated by monopole instantons. By careful analysis of the Wess-Zumino term in the spin coherent path integral, we compute the Berry phase for these monopoles and it produces the destructive interference. This restricts possible perturbations of the effective Lagrangian by monopole operators, and we see that the valence-bond-solid (VBS) phase should have degenerate ground states when $p\not\in 3\mathbb{Z}$. We also compute 't Hooft anomalies to constrain possible phases of this system, and a direct phase transition between Néel and VBS phases is supported from the anomaly matching.
description: 32 pages, 8 figures, minor edits, refs added
Camara ready copy_Abstract new (1).pdf
Creators: name: Sellapperuma, Sathuta
Publisher: name: figshare
Year: 2022
Subjects: subject: 10303 Optimisation
subject: FOS: Mathematics

description: Garbage collecting and management is one of the crucial problems in many urban areas. This study has conducted to the Chilaw city in Sri Lanka due to it is a crowded city. Garbage collection is a burning matter for urban council, because routes allocation for waste collection vehicles is a complicated process. Hence, it is necessary to provide massive solution with optimal routes to collect garbage. Then, urban council would able to provide the service efficiently and effectively. Data about manual system includes number of buildings, places and routes that need to collect garbage were collected via interviews, observation, and survey. While consider about the proposed system (Green Chilaw), city members should register with their collection bins and registrations are placed with GPS coordinates. Members should make request (few clicks) to collect their bins to the system each day before vehicles are allocated to the routes. As the method for routes simulation, this proposed system has tested using the modern optimization algorithm called Simulated Annealing (p=exp−ΔE/kBT) according to the request of daily bin collection. Moreover, estimated time schedule for the garbage collection can be provided through the system to the city members. Furthermore, people can inform any unclean places in the city or missed bins over system and then, routes are generated compiling all these coordinates also. Server-side language PHP, MySQL database management system, GIS maps, email and SMS gateway facility have been used to build this proposed system. Considering results of the proposed system, algorithm nurture with GPS coordinates and convert in to X, Y axis of the Cartesian with existing road junctions’ coordinates. Then, algorithm would decide most optimum and efficient routes to each vehicle relay on the bin collection request, coordinates and number of vehicles. Optimal path could save time, fuel and missing any bin request. In conclusion, it is needed to address the garbage collection process with providing optimal path of routes to allocate vehicles with minimizing the wastages. Using a modern optimization algorithm, it would be provided best routes to collect the garbage of the city.
Black Hole Thermodynamics and the Factor of 2 Problem
Creators: name: Pilling, Terry
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the recent tunneling formulas for black hole radiation in static, spherically symmetric spacetimes follow as a consequence of the first law of black hole thermodynamics and the area-entropy relation based on the radiation temperature. A tunneling formula results even if the radiation temperature is different from the one originally derived by Hawking and this is discussed in the context of the recent factor of 2 problem. In particular, it is shown that if the radiation temperature is higher than the Hawking temperature by a factor of two, thermodynamics then leads to a tunneling formula which is exactly the one recently found to be canonically invariant.
description: 4 pages
Augmenting semantic lexicons using word embeddings and transfer learning
Creators: name: Alshaabi, Thayer
name: Van Oort, Colin M.
name: Fudolig, Mikaela Irene
name: Arnold, Michael V.
name: Danforth, Christopher M.
name: Dodds, Peter Sheridan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Sentiment-aware intelligent systems are essential to a wide array of applications. These systems are driven by language models which broadly fall into two paradigms: Lexicon-based and contextual. Although recent contextual models are increasingly dominant, we still see demand for lexicon-based models because of their interpretability and ease of use. For example, lexicon-based models allow researchers to readily determine which words and phrases contribute most to a change in measured sentiment. A challenge for any lexicon-based approach is that the lexicon needs to be routinely expanded with new words and expressions. Here, we propose two models for automatic lexicon expansion. Our first model establishes a baseline employing a simple and shallow neural network initialized with pre-trained word embeddings using a non-contextual approach. Our second model improves upon our baseline, featuring a deep Transformer-based network that brings to bear word definitions to estimate their lexical polarity. Our evaluation shows that both models are able to score new words with a similar accuracy to reviewers from Amazon Mechanical Turk, but at a fraction of the cost.
description: 17 pages, 8 figures
Engytatus Reuter 1875
Creators: name: Ferreira, Paulo Sérgio Fiuza
name: Martins, David Dos Santos
name: Ferreira, Luciano Santana Fiuza
name: Fornazier, Maurício José
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Engytatus

description: Genus Engytatus Reuter
Type species: Engytatus modestus Reuter 1876:82. Monotypic. Neoproba Distant 1884:270 (new genus, synonymy by Carvalho 1955:222); Cyrtopeltis Carvalho 1958:185 (catalog).
Diagnosis. Eyes located at median of head; calli inconspicuous or slightly delimited; pygophore with a bifurcate process (Ferreira & Henry 2011).
Identification of the species of genus Engytatus of Espírito Santo.
Due to the problem of recognizing species of Engytatus based solely on external morphology, the identification was made by the diagnostic characters of male genitalia including differences in the pygophore projection and left paramere (Fig. 5).
description: Published as part of Ferreira, Paulo Sérgio Fiuza, Martins, David Dos Santos, Ferreira, Luciano Santana Fiuza & Fornazier, Maurício José, 2024, Synopsis of Miridae (Hemiptera: Heteroptera) in Atlantic Forest Dominion, Espírito Santo State, Brazil: keys, diagnoses, new species, plant associations, and geographic distribution. Part I: Bryocorinae, Cylapinae and Deraeocorinae., pp. 201-254 in Zootaxa 5468 (2) on page 210, DOI: 10.11646/zootaxa.5468.2.1, http://zenodo.org/record/11615431
Synchronization in complex networks
Creators: name: Arenas, Alex
name: Diaz-Guilera, Albert
name: Kurths, Jurgen
name: Moreno, Yamir
name: Zhou, Changsong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Synchronization processes in populations of locally interacting elements are in the focus of intense research in physical, biological, chemical, technological and social systems. The many efforts devoted to understand synchronization phenomena in natural systems take now advantage of the recent theory of complex networks. In this review, we report the advances in the comprehension of synchronization phenomena when oscillating elements are constrained to interact in a complex network topology. We also overview the new emergent features coming out from the interplay between the structure and the function of the underlying pattern of connections. Extensive numerical work as well as analytical approaches to the problem are presented. Finally, we review several applications of synchronization in complex networks to different disciplines: biological systems and neuroscience, engineering and computer science, and economy and social sciences.
description: Final version published in Physics Reports. More information available at http://synchronets.googlepages.com/
cCorrGAN: Conditional Correlation GAN for Learning Empirical Conditional Distributions in the Elliptope
Creators: name: Marti, Gautier
name: Goubet, Victor
name: Nielsen, Frank
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Machine Learning (cs.LG)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: We propose a methodology to approximate conditional distributions in the elliptope of correlation matrices based on conditional generative adversarial networks. We illustrate the methodology with an application from quantitative finance: Monte Carlo simulations of correlated returns to compare risk-based portfolio construction methods. Finally, we discuss about current limitations and advocate for further exploration of the elliptope geometry to improve results.
description: International Conference on Geometric Science of Information
Two orbits: When is one in the closure of the other?
Creators: name: Popov, Vladimir L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 14L30; 14Q99

description: Let $G$ be a connected linear algebraic group, let $V$ be a finite dimensional algebraic $G$-module, and let $\mathcal O_1$, $\mathcal O_2$ be two $G$-orbits in $V$. We describe a constructive way to find out whether $\mathcal O_1$ lies in the closure of $\mathcal O_2$ or not.
description: 15 pages. Example 1.15 and Remark 1.16 are added. Several minor typos are fixed
On the possibility of Dark Energy from corrections to the Wheeler-De Witt equation
Creators: name: Nelson, William
name: Sakellariadou, Mairi
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a method for approximating the effective consequence of generic quantum gravity corrections to the Wheeler-DeWitt equation. We show that in many cases these corrections can produce departures from classical physics at large scales and that this behaviour can be interpreted as additional matter components. This opens up the possibility that dark energy (and possible dark matter) could be large scale manifestations of quantum gravity corrections to classical general relativity. As a specific example we examine the first order corrections to the Wheeler-De Witt equation arising from loop quantum cosmology in the absence of lattice refinement and show how the ultimate breakdown in large scale physics occurs.
description: 4 pages, 1 figure. Minor modifications to match version to appear in Phys. Let. B
‘Luoghi del tempo’, ricordi ed emozioni nelle interviste del corpus Emigrantendeutsch in Israel
Creators: name: Flinz, Carolina
name: Leonardi, Simona
Publisher: name: ECHO
Year: 2023
Subjects: linguistic analysis of emotions; biographical-narrative interviews; Israelcorpus; corpus linguistics; places

description: The aim of this contribution is the examination of the role of places as an anchorage of memories in the so-called Israelkorpus, a corpus of narrative interviews in German, investigating places also in the light of their function within the mnestic and narrative elaboration, thus also linked to the emotional dimension (Leonardi et al. 2023). The spatial dimension plays a fundamental role in the corpus; the people interviewed, in fact, guided by the interviewers, narrate their own life stories, marked by anti-Semitic policies, and deeply linked to places. Common stages are in fact the emigration from Germany or Austria (the old Heimat) and the new beginning in another country (the new Heimat). Our approach is part of the renewed interest in the spatial dimension, already present in the tradition of the loci memoriae and only revived in recent decades as a consequence of the so-called spatial turn, although still underestimated compared to the temporal dimension (Leonardi et al. 2023). We also consider that places are constituted by the people who inhabit them and through their dynamic networks of social relations (Massey 1995) and that places favour association with other memories. The aim of our contribution is on the one hand to focus on the correlation between memory, memories and places (Leonardi et al. 2023), and on the other hand to highlight, thanks to a quantitative-qualitative approach, its close relationship with emotions, since during the re-emergence of memories the people interviewed thematise and express their emotions often anchored to places. Starting from a categorisation of the places in the corpus (Brambilla/Flinz 2019, p. 178; Flinz/Ruppenhofer 2021, p. 47), carried out for the purpose of mapping the places in the Israelkorpus in the light of their various functions in the corpus (mnestic, narrative, emotional processing, etc.) we intend to analyse the 'places linked to the cultural-historical period' (Brambilla/Flinz/Luppi 2023) in the IS corpus. The analysis will be carried out with the tools of corpus analysis, narratology and conversation analysis, integrating quantitative and qualitative methods (mixed methods).
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
Tripartite entanglement transformations and tensor rank
Creators: name: Chitambar, Eric
name: Duan, Runyao
name: Shi, Yaoyun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Understanding the nature of multipartite entanglement is a central mission of quantum information theory. To this end, we investigate the question of tripartite entanglement convertibility. We find that there exists no easy criterion to determine whether a general tripartite transformation can be performed with a nonzero success probability and in fact, the problem is NP-hard. Our results are based on the connections between multipartite entanglement and tensor rank (also called Schmidt rank), a key concept in algebraic complexity theory. Not only does this relationship allow us to characterize the general difficulty in determining possible entanglement transformations, but it also enables us to observe the previously overlooked fact that {\em the Schmidt rank is not an additive entanglement measure}. As a result, we improve some best known transformation rates between specific tripartite entangled states. In addition, we find obtaining the most efficient algorithm for matrix multiplication to be precisely equivalent to determining the optimal rate of conversion between the Greenberger-Horne-Zeilinger state and a triangular distribution of three Einstein-Podolsky-Rosen states.
description: 5 pages
Time-reversal asymmetries and angular distributions in $Λ_b \to ΛV$
Creators: name: Geng, Chao-Qiang
name: Liu, Chia-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the spin correlations to probe time-reversal~(T) asymmetries in the decays of $Λ_b \to ΛV ~(V=ϕ, ρ^0, ω, K^{*0})$. The eigenstates of the T-odd operators are obtained along with definite angular momenta. We obtain the T-odd spin correlations from the complex phases among the helicity amplitudes. We give the angular distributions of $Λ_b \to Λ(\to p π^-)V(\to PP')$ and show the corresponding spin correlations, where $P^{(\prime)}$ are the pseudoscalar mesons. Due to the helicity conservation of the $s$ quark in $Λ$, we deduce that the polarization asymmetries of $Λ$ are close to $-1$. Since the decay of $Λ_b \to Λϕ$ in the standard model~(SM) is dictated by the single weak phase from the product of CKM elements, $V_{tb}V_{ts}^*$, the true T and CP asymmetries are suppressed, providing a clean background to test the SM and search for new physics. In the factorization approach, as the helicity amplitudes in the SM share the same complex phase, T-violating effects are absent. Nonetheless, the experimental branching ratio of $Br(Λ_b \to Λϕ) = (5.18\pm 1.29 )\times 10^{-6}$ suggests that the nonfactorizable effects or some new physics play an important role. By parametrizing the nonfactorizable contributions with the effective color number, we calculate the branching ratios and direct CP asymmetries. We also explore the possible T-violating effects from new physics.
description: 26 pages, 1 figure, revised version accepted by JHEP
Non-Universality of the Specific Heat in Glass Forming Systems
Creators: name: Hentschel, H. G. E.
name: Ilyin, Valery
name: Procaccia, Itamar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present new simulation results for the specific heat in a classical model of a binary mixture glass-former in two dimensions. We show that in addition to the formerly observed specific heat peak there is a second peak at lower temperatures which was not observable in earlier simulations. This is a surprise, as most texts on the glass transition expect a single specific heat peak. We explain the physics of the two specific heat peaks by the micro-melting of two types of clusters. While this physics is easily accessible, the consequences are that one should not expect any universality in the temperature dependence of the specific heat in glass formers.
Risemantizzare il concetto di degrado ambientale: la ‘Terra dei Fuochi’ da Gomorra a oggi
Creators: name: Altamura, Gianpaolo
Publisher: name: ECHO
Year: 2023
Subjects: Land of fires; waste; disaster brand

description: The expression “Land of fires” has appeared since 2003 in a Legambiente report on eco-mafias (Legambiente, 2003), but in Gomorra it is reused by Saviano for a connotative purpose to allegorize the situation of profound degradation affecting a part of the territory between Naples and Caserta, where the clans burn buried waste, producing highly toxic fires. Afterwards, the phrase had immediate resonance thanks to the global success achieved by the best seller, becoming common knowledge due to its great communicative effectiveness and its media-journalistic pervasiveness (there are many blogs, websites, youtube channels, newspaper pages and social platforms that have been dedicated over the years to the criminal and cultural phenomenon connected to it). However, this good fortune has contributed to re-semantising the term "Land of fires", which over time has seen its referent change, becoming a dynamic and ever-changing rhetorical-discursive construction, a metaphorical and allusive condition with labile and sometimes ambiguous boundaries that some have defined as a “porous symbol” (Alliegro, 2017).
In fact, the expression today no longer designates a physical space or a defined geographical-territorial perimeter, but rather a mental area, a shared psychological horizon, a conventionally "peripheral" dimension of identity in which some communities or local groups reflect themselves. The formation of this (self-)representation device (which has been compared to a real "disaster brand") (Alliegro, 2017) is however fueled by the profound "coalescence", typical of the Italian scenario, between the mechanisms of “mediacracy” and the cultural production ones (see Bodrunova, 2010): Saviano himself is aware of this compromise as in a recent interview with the "Corriere della Sera" has said: "So much attention and an incredible emotional investment they didn't change things much [...] At a certain point people confused the land of fires with the emergency of rubbish in Naples. But it was a virtuous short circuit because the Neapolitan emergency drew attention to the land of fires” (Saviano, Sforzini 2022).
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
adabmDCA: Adaptive Boltzmann machine learning for biological sequences
Creators: name: Muntoni, Anna Paola
name: Pagnani, Andrea
name: Weigt, Martin
name: Zamponi, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Boltzmann machines are energy-based models that have been shown to provide an accurate statistical description of domains of evolutionary-related protein and RNA families. They are parametrized in terms of local biases accounting for residue conservation, and pairwise terms to model epistatic coevolution between residues. From the model parameters, it is possible to extract an accurate prediction of the three-dimensional contact map of the target domain. More recently, the accuracy of these models has been also assessed in terms of their ability in predicting mutational effects and generating in silico functional sequences. Our adaptive implementation of Boltzmann machine learning, adabmDCA, can be generally applied to both protein and RNA families and accomplishes several learning set-ups, depending on the complexity of the input data and on the user requirements. The code is fully available at https://github.com/anna-pa-m/adabmDCA. As an example, we have performed the learning of three Boltzmann machines modeling the Kunitz and Beta-lactamase2 protein domains and TPP-riboswitch RNA domain. The models learned by adabmDCA are comparable to those obtained by state-of-the-art techniques for this task, in terms of the quality of the inferred contact map as well as of the synthetically generated sequences. In addition, the code implements both equilibrium and out-of-equilibrium learning, which allows for an accurate and lossless training when the equilibrium one is prohibitive in terms of computational time, and allows for pruning irrelevant parameters using an information-based criterion.
Derek Mahon, A Disused Shed in Co. Wexford: memoria e paesologia
Creators: name: Ciompi, Fausto
Publisher: name: ECHO
Year: 2023
Subjects: Derek Mahon; Irlanda; paesaggio; memoria; poesia contemporanea

description: This essay focuses on A Disused Shed in Co. Wexford, the most celebrated poem by Northern Ireland poet Derek Mahon, which appeared in his 1975 collection The Snow Party. The disused shed of the poem, a relic of the vanished golden age of British colonization, is a syncretic place that brings together memories of Peruvian mines, Indian compounds and elements of the Irish landscape. The hotel in the poem has been abandoned "since civil war days", that is, since the conflict that took place in Ireland between June 1922 and May 1923. But the text has as its historical backdrop the late-nineteenth-century troubles: the brutal conflict that between the 1960s and 1998 involved the British army and Irish paramilitary groups, Catholic Republicans and Protestant loyalists. The mushrooms covering what remains of a shed close to the burnt-out hotel are equated with the victims of Treblinka and Pompeii and recall the forgotten victims of other historical catastrophes. The poet rescues these wretched forms of life from oblivion by becoming the "individual who remembers" (Halbawchs) and reconstructing the collective memory of humanity through intertextual and syncretic memory.

Through a close reading of the text and a comparison of the hotel metaphor as it appears in Mahon’s poem and J.G. Farrell's novel Troubles, the essay sheds light on the "regime of historicity" (Hartog) of contemporary Ireland, that is, the way a society treats its past and speaks of it. Mahon acts in the awareness that we must re-familiarize with all the words of memory and suffering that have been captured and are "waiting to be liberated" (Ricoeur).
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
Memory and identity in the landscape of Kate Grenville’s The Secret River
Creators: name: Pes, Annalisa
Publisher: name: ECHO
Year: 2023
Subjects: Memory; forgetting; belonging; Australian landscape; colonial space; Grenville

description: The article analyses the spatial dimension and the relationship between landscape, memory and identity in Kate Grenville’s colonial novel The Secret River where the landscape is a space inscribed with signs of violence that are covered by silence and secrets. It will be argued that the space of colonial encounters, the contact zone where Grenville’s Indigenous and European protagonists meet and clash, is not only a place from which memory is intentionally removed in a process of national dis-remembering, but it is also a place in which scars are left on the ground as well as on the minds, in such a way that memory, both individual and historical, cannot be completely suppressed. It will be pointed out how the discriminating treatment and dispossession of Indigenous people by white settlers, the occupation of a territory that is deliriously claimed to belong to nobody (through the legal fiction of terra nullius) and the rise of violent attacks are articulated through the lure of colonial ownership in terms of a space that is occupied and appropriated in an attempt to claim social ransom and racial superiority. In this sense, the colonial space is a place scattered with historical memories that shape a new geography of the landscape. But at the same time, it is also a space in which the memory of places is suppressed into what W.H. Stanner defined “a secret river of blood”, that runs hidden in the womb of history, surrounded by “The Great Australian Silence”. However, in this mutual relationship between places and memory, the topography of violence draws a landscape on which the spatial inscription of the past cannot be completely erased: its signs are indelible and are overwritten like in a palimpsest.
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
Un giardino fra le rovine delle Torri: The Submission (2011) di Amy Waldman e la memoria divisa negli Stati Uniti dopo l’Undici settembre
Creators: name: Schiavini, Cinzia
Publisher: name: ECHO
Year: 2023
Subjects: Memoria; Undici settembre; Ground Zero; Amy Waldman; The Submission

description: Il saggio esplora la trasformazione dei luoghi della memoria nell’America post Undici settembre attraverso il romanzo di Amy Waldman The Submission (2011), in cui si immagina che il progetto scelto da una giuria selezionata per il memoriale per le vittime di Ground Zero sia opera di un architetto americano di origine indiana e musulmana. Attraverso il dibattito e gli scontro che ne seguono, dentro la giuria ma soprattutto fuori, fra i gruppi di pressione, media, interessi economici e politici, Waldman si interroga su questioni cruciali relative ai processi di memorializzazione: la dicotomia fra ricordo privato e memoria pubblica; la funzione emotiva e ideologica dei luoghi di memoria; le politiche di inclusione ed esclusione che li plasmano, e di conseguenza il rapporto fra luoghi di memoria, identità nazionale e l’”Otherness”, etnica e sociale
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
Improvement of the Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Inversion Code
Creators: name: Griñón-Marín, Ana Belén
name: Yabar, Adur Pastor
name: Liu, Yang
name: Hoeksema, J. Todd
name: Norton, Aimee
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A spectral line inversion code, Very Fast Inversion of the Stokes Vector (VFISV), has been used since May 2010 to infer the solar atmospheric parameters from the spectropolarimetric observations taken by the Helioseismic and Magnetic Imager (HMI) aboard the Solar Dynamics Observatory (SDO). The magnetic filling factor, the fraction of the surface with a resolution element occupied by magnetic field, is set to have a constant value of one in the current version of VFISV. This report describes an improved inversion strategy for the spectropolarimetric data observed with HMI for magnetic field strengths of intermediate values in areas spatially not fully resolved. The VFISV inversion code has been modified to enable inversion of the Stokes profiles with two different components: one magnetic and one non-magnetic. In this scheme, both components share the atmospheric components except for the magnetic field strength, inclination, and azimuth. In order to determine whether the new strategy is useful, we evaluate the inferred parameters inverted with one magnetic component (the original version of the HMI inversion) and with two components (the improved version) using a Bayesian analysis. In pixels with intermediate magnetic field strengths (e.g. plages), the new version provides statistically significant values of filling fraction and magnetic field vector. Not only does the fitting of the Stokes profile improve, but the inference of the magnetic parameters and line-of-sight velocity are obtained uniquely. The new strategy is also proven to be effective for mitigating the anomalous hemispheric bias in the east-west magnetic field component in moderate field regions.
Iconoclasia política: patrimonio, estética y memoria en la era de las protestas
Creators: name: Pedraza Bucio, Claudia Yvette
name: Rebolledo Gonzáles, César
Publisher: name: ECHO
Year: 2023
Subjects: Politic iconoclasm; historical heritage; social memory; social Protests; palimpsest

description: In the context of global protest actions on monuments and heritage buildings (graffiti, graffiti, alterations or demolitions), and under the dynamics of representations that this generates, the intention of this paper is to build a frame of reference that allows a sociological analysis of the struggle for the symbolic and factual order that heritage holds. This paper presents a literature review on the aesthetic dimension of the protests and the heritage expressions installed in it, in order to draw a line of study that enables to treat it as a phenomenon of political communication and memorial dispute. Specifically, our work proposes to analyze the interventions in two dimensions: a) as effective forms of communicative subversion that make visible the demands for social justice by historically marginalized groups; and b) as struggles for the production of memory in which the redefinition of historical truth and the struggles for the legitimacy of political power come into play. The idea of political iconoclasm from which this article is based is located within the so-called "era of protests", and focuses on the cycles of scratching and erasure on heritage, which from our perspective constitutes a palimpsest on which memory is socially drawn and blurred.
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
La foresta nella fiaba romantica tedesca. Una lettura storico-culturale ed estetica
Creators: name: Ruggero, Maria
Publisher: name: ECHO
Year: 2023
Subjects: Spatial identity; memory sites; German romanticism; natural space; landscape and collective memory

description: This paper aims at investigating how places play a vital role in the process of formation of German cultural identity. In particular, I propose to read the representation of the forest in romantic fairy tales, Ludwig Tieck’s Der blonde Eckbert and Sehr Wunderbare Historie von Melusine, in relation to the historic and aesthetic contextualization. After considering Herder’s cultural historicism and his influence over the first romantic generation by means of his German Volkslieder, I show how the Wald in the fairy tales works as a specific literary tool. On the one hand, it evokes the collective unconscious as it becomes the centre of ancestral communitary values, such as respect, trust and sharing which contribute to offer organicity to that space. On the other hand, it implies a semantic inversion, as it reflects negative attitudes, such as betrayal and punishment. I show how these processes of organicity and separation are shaped on the basis of the romantic aesthetic, the author’s thought, connected to a semantic duality, and the historical context, which reveals the primordial association of this place and Germany but also the divisory present, which problematizes and does not enable a total reintegration. I conclude with a comparison between Herder’s Volkslieder and Tieck’s fairy tales in terms of representation of the forest and its function in the process of cultural agnition
description: ECHO, N. 5 (2023): Paesaggi, memoria, palinsesti
A study of domestic service in Canada
Creators: name: Pedlar, David John
Publisher: name: University of British Columbia
Year: 2010

description: This paper is a study of domestic service in Canada. It accomplishes several objectives: (1) connects domestic service with the literature on housework; (2) presents a numerical profile describing the decline of domestic service as a component of the Canadian labour force 1891-1971; (3) explains the decline of domestic service relative to immigration and the growth of other feminized segments of the labour force; (4) identifies the work context of domestic service; (5) describes and explains the treatment of domestic servants in British Columbia labour statutes 1900-1981.
Astrometry of Water Maser Sources in Nearby Molecular Clouds with VERA - II. SVS 13 in NGC 1333
Creators: name: Hirota, Tomoya
name: Bushimata, Takeshi
name: Choi, Yoon Kyung
name: Honma, Mareki
name: Imai, Hiroshi
name: Iwadate, Kenzaburo
name: Jike, Takaaki
name: Kameya, Osamu
name: Kamohara, Ryuichi
name: Kan-ya, Yukitoshi
name: Kawaguchi, Noriyuki
name: Kijima, Masachika
name: Kobayashi, Hideyuki
name: Kuji, Seisuke
name: Kurayama, Tomoharu
name: Manabe, Seiji
name: Miyaji, Takeshi
name: Nagayama, Takumi
name: Nakagawa, Akiharu
name: Oh, Chung Sik
name: Omodaka, Toshihiro
name: Oyama, Tomoaki
name: Sakai, Satoshi
name: Sasao, Tetsuo
name: Sato, Katsuhisa
name: Shibata, Katsunori M.
name: Tamura, Yoshiaki
name: Yamashita, Kazuyoshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the results of multi-epoch VLBI observations with VERA (VLBI Exploration of Radio Astrometry) of the 22 GHz H2O masers associated with the young stellar object SVS 13 in the NGC 1333 region. We have carried out phase-referencing VLBI astrometry and measured an annual parallax of the maser features in SVS 13 of 4.25+/-0.32 mas, corresponding to the distance of 235+/-18 pc from the Sun. Our result is consistent with a photometric distance of 220 pc previously reported. Even though the maser features were detectable only for 6 months, the present results provide the distance to NGC 1333 with much higher accuracy than photometric methods. The absolute positions and proper motions have been derived, revealing that the H2O masers with the LSR (local standard of rest) velocities of 7-8 km s-1 are most likely associated with VLA4A, which is a radio counterpart of SVS 13. The origin of the observed proper motions of the maser features are currently difficult to attribute to either the jet or the rotating circumstellar disk associated with VLA4A, which should be investigated through future high-resolution astrometric observations of VLA4A and other radio sources in NGC 1333.
description: 9 pages, 5 figures. PASJ, in press (2008, Vol. 60, No. 1)
title: Review: "Radical Right Parties in Central and Eastern Europe. Mainstream Party Competition and Electoral Fortune" / Bartek Pytlas. London, New York: Routledge, 2016. ISBN: 978-1-13-888966-8
Creators: name: Tereszkiewicz, Filip
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Bartek Pytlas' book is a revised version of his dissertation, which he defended at the European University Viadrina in 2014. His PhD supervisor was Michael Minkenberg, who is one of the most well respected researchers of radical right parties in Europe and the United States. [1] The book is also part of the Routledge Studies in Extremism and Democracy series. [2] Pytlas' work gives us a broad view of radical right parties in Central and Eastern Europe (CEE) with respect to two areas. The first is an analysis of in-party competition narratives between the radical right and their mainstream competitors, which helps explain why mainstream political parties of that region adopt radical right ideologies much more easily than in Western Europe (pp. 3, 73). This analysis adds a lot of new information about the radicalisation of political discourse in CEE countries. The second area focuses on an analytical method that is popular among social scientists, a framing approach using computer-assisted qualitative data analysis software (CAQDAS) (p. 71). [3] However, this method is rarely applied in common studies on radical right parties, especially within CEE countries, thus distinguishing Pytlas' research efforts.