cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The kinematic signature of damped Lyman alpha systems: Using the D-index to screen for high column density HI absorbers
Creators: name: Ellison, Sara L.
name: Murphy, Michael T.
name: Dessauges-Zavadsky, Miroslava
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a sample of 21 damped Lyman alpha systems (DLAs) and 35 sub-DLAs, we evaluate the D-index = EW / Delta v x 1000 from high resolution spectra of the MgII lambda 2796 profile. This sample represents an increase in sub-DLA D-index statistics by a factor of four over the sample used by Ellison (2006). We investigate various techniques to define the velocity spread (Delta v) of the MgII line to determine an optimal D-index for the identification of DLAs. The success rate of DLA identification is 50 -- 55%, depending on the velocity limits used, improving by a few percent when the column density of FeII is included in the D-index calculation. We recommend the set of parameters that is judged to be most robust, have a combination of high DLA identification rate (57%) and low DLA miss rate (6%) and most cleanly separate the DLAs and sub-DLAs (Kolmogorov-Smirnov probability 0.5%). These statistics demonstrate that the D-index is the most efficient technique for selecting low redshift DLA candidates: 65% more efficient than selecting DLAs based on the equivalent widths of MgII and FeII alone. We also investigate the effect of resolution on determining the N(HI) of sub-DLAs. We convolve echelle spectra of sub-DLA Lya profiles with Gaussians typical of the spectral resolution of instruments on the Hubble Space Telescope and compare the best fit N(HI) values at both resolutions. We find that the fitted HI column density is systematically over-estimated by ~ 0.1 dex in the moderate resolution spectra compared to the best fits to the original echelle spectra. This offset is due to blending of nearby Lya clouds that are included in the damping wing fit at low resolution.
description: Accepted by MNRAS
Maximum likelihood estimation for a group of physical transformations
Creators: name: Chiribella, G.
name: D'Ariano, G. M.
name: Perinotti, P.
name: Sacchi, M. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The maximum likelihood strategy to the estimation of group parameters allows to derive in a general fashion optimal measurements, optimal signal states, and their relations with other information theoretical quantities. These results provide a deep insight into the general structure underlying optimal quantum estimation strategies. The entanglement between representation spaces and multiplicity spaces of the group action appear to be the unique kind of entanglement which is really useful for the optimal estimation of group parameters.
description: 20 pages, no figures. World Scientific class style. Contribution for the Proceedings of the Workshop on "Quantum entanglement in physical and information sciences", held in Pisa, December 14-18, 2004
Empirical evaluation of shallow and deep learning classifiers for Arabic sentiment analysis
Creators: name: Nassif, Ali Bou
name: Darya, Abdollah Masoud
name: Elnagar, Ashraf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2.7; I.5

description: This work presents a detailed comparison of the performance of deep learning models such as convolutional neural networks (CNN), long short-term memory (LSTM), gated recurrent units (GRU), their hybrids, and a selection of shallow learning classifiers for sentiment analysis of Arabic reviews. Additionally, the comparison includes state-of-the-art models such as the transformer architecture and the araBERT pre-trained model. The datasets used in this study are multi-dialect Arabic hotel and book review datasets, which are some of the largest publicly available datasets for Arabic reviews. Results showed deep learning outperforming shallow learning for binary and multi-label classification, in contrast with the results of similar work reported in the literature. This discrepancy in outcome was caused by dataset size as we found it to be proportional to the performance of deep learning models. The performance of deep and shallow learning techniques was analyzed in terms of accuracy and F1 score. The best performing shallow learning technique was Random Forest followed by Decision Tree, and AdaBoost. The deep learning models performed similarly using a default embedding layer, while the transformer model performed best when augmented with araBERT.
Beam-Recoil Polarization Transfer in the Nucleon Resonance Region in the Exclusive $\vec{e}p \to e'K^+\vecΛ$ and $\vec{e}p \to e'K^+\vecΣ^0$ Reactions at CLAS
Creators: name: Carman, D. S.
name: Raue, B. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Beam-recoil transferred polarizations for the exclusive $\vec{e}p \to e'K^+ \vecΛ,\vecΣ^0$ reactions have been measured using the CLAS spectrometer at Jefferson Laboratory. New measurements have been completed at beam energies of 4.261 and 5.754 GeV that span a range of momentum transfer $Q^2$ from 0.7 to 5.4 GeV$^2$, invariant energy $W$ from 1.6 to 2.6 GeV, and the full center-of-mass angular range of the $K^+$ meson. These new data add to the existing CLAS $K^+Λ$ measurements at 2.567 GeV, and provide the first-ever data for the $K^+Σ^0$ channel in electroproduction. Comparisons of the data with several theoretical models are used to study the sensitivity to s-channel resonance contributions and the underlying reaction mechanism. Interpretations within two semi-classical partonic models are made to probe the underlying reaction mechanism and the $s\bar{s}$ quark-pair creation dynamics.
description: 48 pages, 22 figures
Polymer translocation out of confined environments
Creators: name: Luo, Kaifu
name: Metzler, Ralf
name: Ala-Nissila, Tapio
name: Ying, See-Chen
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the dynamics of polymer translocation out of confined environments. Analytic scaling arguments lead to the prediction that the translocation time scales like $τ\sim N^{β+ν_{2D}}R^{1+(1-ν_{2D})/ν}$ for translocation out of a planar confinement between two walls with separation $R$ into a 3D environment, and $τ\sim N^{β+1}R$ for translocation out of two strips with separation $R$ into a 2D environment. Here, $N$ is the chain length, $ν$ and $ν_{2D}$ are the Flory exponents in 3D and 2D, and $β$ is the scaling exponent of translocation velocity with $N$, whose value for the present choice of parameters is $β\approx 0.8$ based on Langevin dynamics simulations. These scaling exponents improve on earlier predictions.
description: 5 pages, 5 figures. To appear in Phys. Rev. E
Homodyne tomography and the reconstruction of quantum states of light
Creators: name: D'Ariano, G. M.
name: Maccone, L.
name: Sacchi, M. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum tomography is a procedure to determine the quantum state of a physical system, or equivalently, to estimate the expectation value of any operator. It consists in appropriately averaging the outcomes of the measurement results of different observables, obtained on identical copies of the same system. Alternatively, it consists in maximizing an appropriate likelihood function defined on the same data. The procedure can be also used to completely characterize an unknown apparatus. Here we focus on the electromagnetic field, where the tomographic observables are obtained from homodyne detection.
description: 18 pages, 4 figures. World Scientific style. Contribution for the book "Quantum Information with continous variables of atoms and light" Ed. by Cerf, Leuchs, and Polzik
Extrapolating Zernike Moments to Predict Future Optical Wave-fronts in Adaptive Optics Using Real Time Data Mining
Creators: name: Vyas, Akondi
name: Roopashree, M. B.
name: Prasad, B. Raghavendra
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the details of predicting atmospheric turbulence by mining Zernike moment data obtained from simulations as well as experiments. Temporally correlated optical wave-fronts were simulated such that they followed Kolmogorov phase statistics. The wave-fronts reconstructed either by modal or zonal methods can be represented in terms of Zernike moments. The servo lag error in adaptive optics is minimized by predicting Zernike moments in the near future by using the data from the immediate past. It is shown statistically that the prediction accuracy depends on the number of past phase screens used for prediction and servo lag time scales. The algorithm is optimized in terms of these parameters for real time and efficient operation of the adaptive optics system. On an average, we report more than 3% improvement in the wave-front compensation after prediction. This analysis helps in optimizing the design parameters for sensing and correction in closed loop adaptive optics systems.
description: 5 pages, 10 figures, International Conference on Information Systems and Software Engineering, ICISSE-2009
'Entanglement' -- A new dynamic metric to measure team flow
Creators: name: Gloor, P. A.
name: Zylka, M. P.
name: Colladon, A. Fronzetti
name: Makai, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: H.0; J.4; H.4.0

description: We introduce "entanglement", a novel metric to measure how synchronized communication between team members is. This measure calculates the Euclidean distance among team members' social network metrics timeseries. We validate the metric with four case studies. The first case study uses entanglement of 11 medical innovation teams to predict team performance and learning behavior. The second case looks at the e-mail communication of 113 senior executives of an international services firm, predicting employee turnover through lack of entanglement of an employee. The third case analyzes the individual employee performance of 81 managers. The fourth case study predicts performance of 13 customer-dedicated teams at a big international company by comparing entanglement in the e-mail interactions with satisfaction of their customers measured through Net Promoter Score (NPS). While we can only speculate about what is causing the entanglement effect, we find that it is a new and versatile indicator for the analysis of employees' communication, analyzing the hitherto underused temporal dimension of online social networks which could be used as a powerful predictor of employee and team performance, employee turnover, and customer satisfaction.
Oswaldo Estrada (editor), “Rosa Beltrán: afectos literarios y el arte de narrar”, Ciudad de México, Bonilla Artigas Editores, 2023, pp. 362
Creators: name: Loría Araujo, David
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Geometry of complex Monge-Ampere equations
Creators: name: Fu, Xin
Publisher: name: No Publisher Supplied
Year: 2020

description: In this thesis, we study three problems related to Complex Monge-Amp`ere equations. After the introduction and preliminary, In chapter 3, we study K ̈ahler Ricci flow on Fano bundle, with finite time singularity. we show that under the suitable assumption on the initial and ending K ̈ahler class, the evolving K ̈ahler metrics along K ̈ahler Ricci flow have uniform diameter bound and moreover, if we assume the fiber of Fano bundle is Pn or Mm,k, the evolving metric will converge to a K ̈ahler metric on the base of the Fano bundle in Gromov-Hausdorff sense, which generalizes the result of Song-Szekelyhidi- Weinkove [103] who study the K ̈ahler Ricci flow on projective bundle.In chapter 4, based on Kolodziej’s fundamental result on C0 estimate of complex Monge-Amp`ere equation, we study the geometric property of complex manifolds cou- pled with a family of K ̈ahler metrics which come from solutions of a family of complex Monge-Amp`ere equations. As a application, on a minimal K ̈ahler manifold with inter- mediate Kodaira dimension, we obtain uniform diameter bound of a family of collapsing K ̈ahler metrics whose K ̈ahler class is small perturbation of the canonical class. This is our first attempt to understand canonical metric on complex manifold with nef canon- ical class.In chapter 5, we further study degeneration of K ̈ahler-Einstein metrics with negative curvature on canonical polarized complex manifold. For this purpose, we construct complete K ̈ahler-Einstein metric near isolated log canonical singularity through two different methods and for those log canonical singularity coupled with a model metric satisfying bounded geometry property roughly, we prove a rigidity result concerning complete K ̈ahler-Einsteins near the singularity.
“Vivir la violencia en el Perú del nuevo milenio”, Oswaldo Estrada y Carlos Villacorta (eds.), Lima: Ediciones MYL, pp. 335
Creators: name: Alicino, Laura
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Laura Alicino, “El guiño de lo real. Intertextualidad y poéticas de resistencia en Cristina Rivera Garza”, Valencia: Albatros Ediciones, 2022, pp. 224
Creators: name: Moscatelli, Federica
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Statistical Performance Analysis of MDL Source Enumeration in Array Processing
Creators: name: Haddadi, Farzan
name: Malekmohammadi, Mohammadreza
name: Nayebi, Mohammad Mahdi
name: Aref, Mohammad Reza
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this correspondence, we focus on the performance analysis of the widely-used minimum description length (MDL) source enumeration technique in array processing. Unfortunately, available theoretical analysis exhibit deviation from the simulation results. We present an accurate and insightful performance analysis for the probability of missed detection. We also show that the statistical performance of the MDL is approximately the same under both deterministic and stochastic signal models. Simulation results show the superiority of the proposed analysis over available results.
description: Accepted for publication in IEEE Transactions on Signal Processing, April 2009
Estado y leyes de excepción: Uruguay, Chile y Argentina entre democracia y dictadura (1967-1976)
Creators: name: Thomas, Jean Baptiste
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: Este artículo se propone indagar la forma en que, en los primeros años 1970, los gobiernos constitucionales del Cono Sur van adoptando una serie de leyes de excepción antes de los golpes de Estado en Uruguay, Chile y Argentina, abriendo el camino al autoritarismo. Estudia, por una parte, las raíces profundas de este autoritarismo. Interroga, por la otra, la forma en que se estructura este autoritarismo en tiempos de gobiernos constitucionales. A la vez, plantea una serie de hipótesis sobre el blanco social y política de estas medidas en vísperas de los golpes.

 
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Spatially-Coupled QLDPC Codes
Creators: name: Yang, Siyi
name: Calderbank, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Spatially-coupled (SC) codes is a class of convolutional LDPC codes that has been well investigated in classical coding theory thanks to their high performance and compatibility with low-latency decoders. We describe toric codes as quantum counterparts of classical two-dimensional spatially-coupled (2D-SC) codes, and introduce spatially-coupled quantum LDPC (SC-QLDPC) codes as a generalization. We use the convolutional structure to represent the parity check matrix of a 2D-SC code as a polynomial in two indeterminates, and derive an algebraic condition that is both necessary and sufficient for a 2D-SC code to be a stabilizer code. This algebraic framework facilitates the construction of new code families. While not the focus of this paper, we note that small memory facilitates physical connectivity of qubits, and it enables local encoding and low-latency windowed decoding. In this paper, we use the algebraic framework to optimize short cycles in the Tanner graph of 2D-SC hypergraph product (HGP) codes that arise from short cycles in either component code. While prior work focuses on QLDPC codes with rate less than 1/10, we construct 2D-SC HGP codes with small memories, higher rates (about 1/3), and superior thresholds.
description: 36 pages, 10 figures. Accepted for publication at Quantum Journal
Maximum latent heat of neutron star matter without GR
Creators: name: Lope-Oter, Eva
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show how the specific latent heat is relevant to characterize the first-order phase transitions in neutron stars. Our current knowledge of this dynamical quantity strongly depends on the uncertainty bands of Chiral Perturbation Theory and of pQCD calculations and can be used to diagnose progress on the equation of state. We state what is known to be hadron-model independent and without feedback from neutron star observations and, therefore, they can be used to test General Relativity as well as theories beyond GR, such as modified gravity.
description: 8 pages, 9 plots, Proceedings contribution for the conference "A virtual tribute to Quark Confinement", held on July 2021, https://www.ux.uis.no/vconf21/ with primary work in arXiv:2103.10799
Critical Analysis of Middleware Architectures for Large Scale Distributed Systems
Creators: name: Pop, Florin
name: Dobre, Ciprian Mihai
name: Costan, Alexandru
name: Andreica, Mugurel Ionut
name: Tirsa, Eliana-Dina
name: Stratan, Corina
name: Cristea, Valentin
Publisher: name: arXiv
Year: 2009
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.4; D.4

description: Distributed computing is increasingly being viewed as the next phase of Large Scale Distributed Systems (LSDSs). However, the vision of large scale resource sharing is not yet a reality in many areas - Grid computing is an evolving area of computing, where standards and technology are still being developed to enable this new paradigm. Hence, in this paper we analyze the current development of middleware tools for LSDS, from multiple perspectives: architecture, applications and market research. For each perspective we are interested in relevant technologies used in undergoing projects, existing products or services and useful design issues. In the end, based on this approach, we draw some conclusions regarding the future research directions in this area.
Oil Spill Segmentation using Deep Encoder-Decoder models
Creators: name: Satyanarayana, Abhishek Ramanathapura
name: Dhali, Maruf A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Crude oil is an integral component of the world economy and transportation sectors. With the growing demand for crude oil due to its widespread applications, accidental oil spills are unfortunate yet unavoidable. Even though oil spills are difficult to clean up, the first and foremost challenge is to detect them. In this research, the authors test the feasibility of deep encoder-decoder models that can be trained effectively to detect oil spills remotely. The work examines and compares the results from several segmentation models on high dimensional satellite Synthetic Aperture Radar (SAR) image data to pave the way for further in-depth research. Multiple combinations of models are used to run the experiments. The best-performing model is the one with the ResNet-50 encoder and DeepLabV3+ decoder. It achieves a mean Intersection over Union (IoU) of 64.868% and an improved class IoU of 61.549% for the ``oil spill" class when compared with the previous benchmark model, which achieved a mean IoU of 65.05% and a class IoU of 53.38% for the ``oil spill" class.
description: 8 pages, 6 figures, 4 tables
Aleuropteridis eastopi Mound 1961
Creators: name: Martin, Jon H.
name: Camus, Josephine M.
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Aleuropteridis
Aleuropteridis eastopi

description: Aleuropteridis eastopi Mound, 1961 DISTRIBUTION. Cameroun, Ghana, Ivory Coast. HOST PLANTS. Nephrolepidaceae: Nephrolepis biserrata; undetermined fern. COMMENTS. Only known from type material, one published record by Cohic (1969), and a single puparium collected by V. F. Eastop in Cameroun (BMNH).
description: Published as part of Martin, Jon H. & Camus, Josephine M., 2001, Whiteflies (Sternorrhyncha, Aleyrodidae) colonising ferns (Pteridophyta: Filicopsida), with descriptions of two new Trialeurodes and one new Metabemisia species from south­east Asia, pp. 1-19 in Zootaxa 2 on pages 12-13, DOI: 10.5281/zenodo.4618039
description: {"references": ["Mound, L. A. (1961) A new genus and four new species of whitefly from ferns (Homoptera, Aleyrodidae). Revue de Zoologie et de Botanique Africaine, 64, 127 - 132.", "Cohic, F. (1969) Contribution a l'etude des aleurodes africains (5 e Note). Annals of the University of Abidjan (E), 2, 1 - 156."]}
Do ut des. Reti anticomuniste e circolazione periferica nel Cono Sud (1975-1981)
Creators: name: Ruggiero, Vito
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: L’articolo si propone studiare i meccanismi di circolazione militante nello spazio della DSN, ricostruendo il percorso di gruppi anticomunisti europei attraverso Cile, Argentina e Bolivia. Si evidenzia come la permanenza dei militanti sul territorio sia stata subordinata alla protezione di un regime ogni volta ben definito. Emerge inoltre come le dinamiche politiche continentali abbiano fortemente influenzato la traiettoria seguita dai militanti e la libertà di circolazione nel continente, condizionata dalle relazioni internazionali dei regimi che, di volta in volta, costituivano il loro punto di riferimento sul territorio.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Dust in the inner regions of debris disks around A stars
Creators: name: Akeson, R. L.
name: Ciardi, D. R.
name: Millan-Gabet, R.
name: Merand, A.
name: Di Folco, E.
name: Monnier, J. D.
name: Beichman, C. A.
name: Absil, O.
name: Aufdenberg, J.
name: McAlister, H.
name: Brummelaar, T. ten
name: Sturmann, J.
name: Sturmann, L.
name: Turner, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present infrared interferometric observations of the inner regions of two A-star debris disks, beta Leo and zeta Lep, using the FLUOR instrument at the CHARA interferometer on both short (30 m) and long (>200 m) baselines. For the target stars, the short baseline visibilities are lower than expected for the stellar photosphere alone, while those of a check star, delta Leo, are not. We interpret this visibility offset of a few percent as a near-infrared excess arising from dust grains which, due to the instrumental field of view, must be located within several AU of the central star. For beta Leo, the near-infrared excess producing grains are spatially distinct from the dust which produces the previously known mid-infrared excess. For zeta Lep, the near-infrared excess may be spatially associated with the mid-infrared excess producing material. We present simple geometric models which are consistent with the near and mid-infrared excess and show that for both objects, the near-infrared producing material is most consistent with a thin ring of dust near the sublimation radius with typical grain sizes smaller than the nominal radiation pressure blowout radius. Finally, we discuss possible origins of the near-infrared emitting dust in the context of debris disk evolution models.
description: 20 pages, 2 figures, to appear in the Astrophysical Journal
Aproximación al debate histórico Postdictadura en Chile: la Unidad Popular a 50 años del Golpe de Estado del 11 de septiembre de 1973
Creators: name: Sánchez González, Elias Gabriel
name: González Rodríguez, Miguel
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: Este trabajo busca aproximarse al relato que responsabiliza a la izquierda chilena del quiebre institucional que terminó en la dictadura cívico militar que lidero Augusto Pinochet. Si tomamos como referencia el caso uruguayo, en lo relativo a la discusión sobre “quien tiro la primera piedra” (la izquierda o la derecha), lo hacemos para cuestionar y profundizar el caso propio, al analizar los argumentos que justifican representaciones del pasado que criminalizan, avergüenzan y deshumanizan los pilares identitarios de la izquierda chilena. Así, incursionaremos en las responsabilidades que a la derecha le competen no sólo en los quiebres institucionales, sino también en la difusión y representación de sentidos comunes que apuntan a ver las acciones de la izquierda como “causa” y la irrupción militar como “consecuencia”.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Mikhail Zoshchenko and the Serapion brothers
Creators: name: Bezeredi, Judith L
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to explore the period of relative economic and artistic freedom that occurred during the time of the New Economic Policy (1921-1924). The general failure in agriculture and in industrial productivity forced the Soviet regime to allow diversions from the orthodox Marxist view of state ownership of the tools of production. Because of the need to start the wheels of production turning, the minor landowners, small manufacturers and petty profiteers took to the task in hope of financial gains. This economic environment, uncontrolled by the Communist Party, reflected itself in the relatively chaotic "artistic scene". Amongst the many literary groups that appeared during the early 1920's, I dwell mostly upon the Serapion Brothers and the members of that group, singling out for more intense study Mikhail Zoshchenko: his artistry and his struggle for artistic freedom.
Aleuropteridis hargreavesi Mound 1961
Creators: name: Martin, Jon H.
name: Camus, Josephine M.
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Aleuropteridis
Aleuropteridis hargreavesi

description: Aleuropteridis hargreavesi Mound, 1961 DISTRIBUTION. Sierra Leone. HOST PLANTS. undetermined fern. COMMENTS. Only known from type material.
description: Published as part of Martin, Jon H. & Camus, Josephine M., 2001, Whiteflies (Sternorrhyncha, Aleyrodidae) colonising ferns (Pteridophyta: Filicopsida), with descriptions of two new Trialeurodes and one new Metabemisia species from south­east Asia, pp. 1-19 in Zootaxa 2 on page 13, DOI: 10.5281/zenodo.4618039
description: {"references": ["Mound, L. A. (1961) A new genus and four new species of whitefly from ferns (Homoptera, Aleyrodidae). Revue de Zoologie et de Botanique Africaine, 64, 127 - 132."]}
Episodic accretion at early stages of evolution of low mass stars and brown dwarfs: a solution for the observed luminosity spread in HR diagrams?
Creators: name: Baraffe, I.
name: Chabrier, G.
name: Gallardo, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present evolutionary models for young low mass stars and brown dwarfs taking into account episodic phases of accretion at early stages of the evolution, a scenario supported by recent large surveys of embedded protostars. An evolution including short episodes of vigorous accretion ($\mdot \ge 10^{-4} \msolyr$) followed by longer quiescent phases ($\mdot < 10^{-6} \msolyr$) can explain the observed luminosity spread in HR diagrams of star forming regions at ages of a few Myr, for objects ranging from a few Jupiter masses to a few tenths of a solar mass. The gravitational contraction of these accreting objects strongly departs from the standard Hayashi track at constant $\te$. The best agreement with the observed luminosity scatter is obtained if most of the accretion shock energy is radiated away. The obtained luminosity spread at 1 Myr in the HR diagram is equivalent to what can be misinterpreted as a $\sim$ 10 Myr age spread for non-accreting objects. We also predict a significant spread in radius at a given $\te$, as suggested by recent observations. These calculations bear important consequences on our understanding of star formation and early stages of evolution and on the determination of the IMF for young ($\le$ a few Myr) clusters. Our results also show that the concept of a stellar birthline for low-mass objects has no valid support.
description: 8 pages, 5 figures, accepted for publication in APJ Letter
Revisitando, a Contrapelo, a herança autoritária brasileira: a questão agrária no teatro de Oduvaldo Vianna Filho
Creators: name: Patriota Ramos, Rosangela
name: Freire Ramos, Alcides
Publisher: name: Confluenze.  Rivista di Studi Iberoamericani
Year: 2023

description: Vivemos tempos sombrios no Brasil. Tempos marcados pela reverberação das ideias e palavras de ordem do autoritarismo, especialmente aquelas que se apoiam no legado da Ditadura Militar (1964-1985). Neste artigo, discutir-se-á a forma como a dramaturgia de Oduvaldo Vianna Filho (conhecido como Vianinha) tratou a luta pela terra, de modo a jogar luz sobre propostas que se contrapuseram ao autoritarismo militar brasileiro.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Brain activity during viewing and describing of emotional and neutral pictures
Creators: name: Schumacher, Sarah
name: Sörös, Peter
Publisher: name: F1000 Research Limited
Year: 2019

description: Emotions, such as anger, fear or disgust, are central aspects of human life. What happens in the brain if someone views an emotional scene expressing e.g. fear or disgust compared to a neutral one? And what happens in the brain if someone describes an emotional scene?
We used functional magnetic resonance imaging (fMRI) to study brain activity during picture viewing and describing in 12 young healthy participants. fMRI records changes of blood oxygenation inside the brain during different experimental conditions to localize areas of increased brain activation associated with task performance. fMRI was performed on a Siemens Prisma MR scanner at 3 Tesla field strength. Our experimental conditions were: NV (viewing a neutral scene), ND (describing a neutral scene), EV (viewing an emotional scene) and ED (describing an emotional scene). Neutral and emotional pictures were taken from the Nencki Affective Picture System. fMRI data were analyzed using standard statistical methods based on the general linear model as implemented in the software package FSL.
During viewing (NV, EV) we found strong and widespread activation of the occipital cortex. During describing (ND, ED) we found bilateral activation in the supplementary motor area, pre- and postcentral cortex, basal ganglia, cerebellum, and superior temporal cortex, in addition to occipital activation. Viewing an emotional scene is associated with increased activation in parts of the bilateral occipital cortex and the right postcentral gyrus compared to viewing a neutral scene (EV-NV). Describing a neutral scene is associated with stronger activity in the bilateral parietal cortex as well as the right frontal and temporal cortex compared to describing an emotional scene (ND-ED).
These results suggest that the emotional valence of visual stimuli modulates not only the activity of the visual cortex during viewing, but also of parietal, temporal, and frontal areas during speaking.
“Ospitalità” e traduzione di scrittori africani “in rivolta”. Le poesie anticoloniali in lingua portoghese nell’Italia degli anni Sessanta
Creators: name: Di Eugenio, Alessia
name: De Rosa, Francesca
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: L’articolo ricostruisce le condizioni di ospitalità di opere poetiche africane in lingua portoghese nell’Italia degli anni Sessanta. Sono particolarmente indagati il ruolo di figure-cerniera e/o traduttori, quali Joyce Lussu, Giuseppe Tavani e Pier Paolo Pasolini e gli elementi paratestuali e contestuali delle opere ospitate. L’intermediazione intellettuale dell’angolano Mário Pinto de Andrade ha inoltre contribuito in modo significativo alla pubblicazione di queste antologie poetiche anticoloniali.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Narrativizar Ausencias. El trauma y su (des)escritura en “El material humano” de Rodrigo Rey Rosa
Creators: name: Alicino, Laura
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: En el marco de la reelaboración de la herencia autoritaria en América Latina, este ensayo estudia la representación del trauma de la guerra civil y dictadura guatemalteca en El material humano de Rodrigo Rey Rosa, donde se rescatan los datos monumentales sobre las violencias del Archivo Histórico de la Policía Nacional. Nos centramos en las estrategias estéticas a través de las cuales se discute el intento por encontrar una síntesis entre el persistente deber de la memoria y la ausencia de las huellas de los cuerpos que el archivo (no) devuelve. No mostrando la violencia y forzando al lector a ver hasta qué punto puede llegar su imaginación, el autor crea un corto circuito ético que nos enseña a leer el trauma a través de su (des)escritura.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
A Low Density Lattice Decoder via Non-Parametric Belief Propagation
Creators: name: Bickson, Danny
name: Ihler, Alexander T.
name: Dolev, Danny
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The recent work of Sommer, Feder and Shalvi presented a new family of codes called low density lattice codes (LDLC) that can be decoded efficiently and approach the capacity of the AWGN channel. A linear time iterative decoding scheme which is based on a message-passing formulation on a factor graph is given. In the current work we report our theoretical findings regarding the relation between the LDLC decoder and belief propagation. We show that the LDLC decoder is an instance of non-parametric belief propagation and further connect it to the Gaussian belief propagation algorithm. Our new results enable borrowing knowledge from the non-parametric and Gaussian belief propagation domains into the LDLC domain. Specifically, we give more general convergence conditions for convergence of the LDLC decoder (under the same assumptions of the original LDLC convergence analysis). We discuss how to extend the LDLC decoder from Latin square to full rank, non-square matrices. We propose an efficient construction of sparse generator matrix and its matching decoder. We report preliminary experimental results which show our decoder has comparable symbol to error rate compared to the original LDLC decoder.%
description: Submitted for publication
Aleuropteridis jamesi Mound 1961
Creators: name: Martin, Jon H.
name: Camus, Josephine M.
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Aleuropteridis
Aleuropteridis jamesi

description: Aleuropteridis jamesi Mound, 1961 DISTRIBUTION. Nigeria. HOST PLANTS. Pteridaceae: Pteris togoensis. COMMENTS. Only known from type material.
description: Published as part of Martin, Jon H. & Camus, Josephine M., 2001, Whiteflies (Sternorrhyncha, Aleyrodidae) colonising ferns (Pteridophyta: Filicopsida), with descriptions of two new Trialeurodes and one new Metabemisia species from south­east Asia, pp. 1-19 in Zootaxa 2 on page 13, DOI: 10.5281/zenodo.4618039
description: {"references": ["Mound, L. A. (1961) A new genus and four new species of whitefly from ferns (Homoptera, Aleyrodidae). Revue de Zoologie et de Botanique Africaine, 64, 127 - 132."]}
Estimating the thermal photon production rate using lattice QCD
Creators: name: Török, Csaba
name: Cè, Marco
name: Harris, Tim
name: Krasniqi, Ardit
name: Meyer, Harvey B.
name: Toniato, Arianna
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results for the photon emission rate determined from the transverse channel vector correlator at fixed spatial momentum using two flavors of dynamical Wilson fermions at $T\sim$250 MeV. We estimate the transverse channel spectral function using the continuum extrapolated correlator by applying various fit ansätze with a smooth matching to the NLO perturbative result. We confront our estimate based on this channel with the latest results of our collaboration based on the difference of the transverse and longitudinal channels.
description: Proceedings of the 38th International Symposium on Lattice Field Theory, LATTICE2021 26th-30th July, 2021, Zoom/Gather@MIT
Coherent Thermoelectric Effects in Mesoscopic Andreev Interferometers
Creators: name: Jacquod, Ph.
name: Whitney, R. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate thermoelectric transport through Andreev interferometers. We show that the ratio of the thermal and the charge conductance exhibits large oscillations with the phase difference $ϕ$ between the two superconducting contacts, and that the Wiedemann-Franz law holds only when $ϕ=π$. A large average thermopower furthermore emerges whenever there is an asymmetry in the dwell times to reach the superconducting contacts. When this is the case, the thermopower is odd in $ϕ$. In contrast, when the average times to reach either superconducting contact are the same, the average thermopower is zero, however mesoscopic effects (analogous to universal conductance fluctuations) lead to a sample-dependent thermopower which is systematically even in $ϕ$.
Aleurotulus pteridophytae Martin 1994
Creators: name: Martin, Jon H.
name: Camus, Josephine M.
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Aleurotulus
Aleurotulus pteridophytae

description: Aleurotulus pteridophytae Martin (in Mound et al., 1994) DISTRIBUTION. Colombia, Costa Rica, Ecuador, El Salvador, Venezuela. HOST PLANTS. Lycopsida ­ Selaginellaceae: Selaginella eurynota. Filicopsida ­ Pteridaceae: Adiantum platyphyllum ­group; Schizaeaceae: Anemia phyllitidis; unidentified ferns intercepted at US quarantine stations. COMMENTS. This is the only whitefly species known to colonise Selaginella. It is occasionally intercepted by US quarantine stations, on ferns from Central and northern South America.
description: Published as part of Martin, Jon H. & Camus, Josephine M., 2001, Whiteflies (Sternorrhyncha, Aleyrodidae) colonising ferns (Pteridophyta: Filicopsida), with descriptions of two new Trialeurodes and one new Metabemisia species from south­east Asia, pp. 1-19 in Zootaxa 2 on pages 13-14, DOI: 10.5281/zenodo.4618039
description: {"references": ["Mound, L. A., Martin, J. H. & Polaszek, A. (1994) The insect fauna of Selaginella (Pteridophyta: Lycopsida), with descriptions of three new species. Journal of Natural History, 28, 1403 - 1415."]}
Compensating for Beamsplitter Asymmetries in Quantum Interference Experiments
Creators: name: Liang, J. L.
name: Pittman, T. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The visibility of the quantum interference "dip" seen in the Hong-Ou-Mandel experiment is optimized when a symmetric 50/50 beamsplitter is used in the interferometer. Here we show that the reduction in visibility caused by an asymmetric beamsplitter can be compensated by manipulating the polarization states of the two input photons. We experimentally demonstrate this by using a highly asymmetric 10/90 beamsplitter, and converting an initial dip visibility of 22% to a compensated value of 99%.
description: 3 pages, 4 figures
Lembrança, esquecimento e reparação histórica: o bolsonarismo e a memória da Guerrilha do Araguaiao
Creators: name: Souza, Francisco Das Chagas Silva
name: Santos, Diana Rodrigues Dos
Publisher: name: Confluenze.  Rivista di Studi Iberoamericani
Year: 2023

description: Neste artigo, analisa-se o uso e as disputas da memória acerca da Guerrilha do Araguaia a partir da homenagem feita pelo ex-presidente Jair Bolsonaro ao Major Curió, acusado de atrocidades durante esse conflito. A metodologia constou de revisão bibliográfica e de consulta à imprensa e registros documentais. Constata-se que a referida Guerrilha foi motivo de esquecimento voluntário durante a Ditadura Civil-Militar, e que, ainda hoje, há uma luta entre os defensores da memória oficial e os grupos que buscam a reconstituição da memória das vítimas da repressão e uma reparação histórica.
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
Universal Aspects of High-Temperature Relaxation Dynamics in Random Spin Models
Creators: name: Zhou, Tian-Gang
name: Zheng, Wei
name: Zhang, Pengfei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Universality is a crucial concept in modern physics, allowing us to capture the essential features of a system's behavior using a small set of parameters. In this work, we unveil universal spin relaxation dynamics in anisotropic random Heisenberg models with infinite-range interactions at high temperatures. Starting from a polarized state, the total magnetization can relax monotonically or decay with long-lived oscillations, determined by the sign of a universal single function $A=-ξ_1^2+ξ_2^2-4ξ_2ξ_3+ξ_3^2$. Here $(ξ_1,ξ_3,ξ_3)$ characterizes the anisotropy of the Heisenberg interaction. Furthermore, the oscillation shows up only for $A>0$, with frequency $Ω\propto \sqrt{A}$. To validate our theory, we compare it to numerical simulations by solving the Kadanoff-Baym (KB) equation with a melon diagram approximation and the exact diagonalization (ED). The results show our theoretical prediction works in both cases, regardless of a small system size $N=8$ in ED simulations. Our study sheds light on the universal aspect of quantum many-body dynamics beyond low energy limit.
description: 20 pages, 5 figures
Vehiculating resistance: narrative and visuality in Voz Operária, a case of antagonist journalism
Creators: name: Zega, Fulvia
name: Martinelli, Stefano
Publisher: name: Confluenze. Rivista di Studi Iberoamericani
Year: 2023

description: This article examines the role and the function performed by Voz Operária during the Brazilian military dictatorship. Despite not abandoning its ideological principles, the monthly emerged in this period as a catalyst for a culture of resistance and democracy, appealing to a composite readership. By highlighting the rhetorical and visual stratagems employed by its editors, this article reveals how the interaction of narrative, caricatures, and woodcuts generated a common emotional realm, unifying the different souls of the opposition front
description: Confluenze. Rivista di Studi Iberoamericani, Vol. 15 No. 2 (2023): Between past and present. A reflection on the authoritarian legacy
The clustering of galaxy clusters in cosmological models with non-Gaussian initial conditions: Predictions for future surveys
Creators: name: Fedeli, C.
name: Moscardini, L.
name: Matarrese, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We predict the biasing and clustering properties of galaxy clusters that are expected to be observed in the catalogues produced by two forthcoming X-ray and Sunyaev-Zel'dovich effect surveys. We study a set of flat cosmological models where the primordial density probability distribution shows deviations from Gaussianity in agreement with current observational bounds form the background radiation. We consider both local and equilateral shapes for the primordial bispectrum in non-Gaussian models. The two catalogues investigated are those produced by the \emph{e}ROSITA wide survey and from a survey based on South Pole Telescope observations. It turns out that both the bias and observed power spectrum of galaxy clusters are severely affected in non-Gaussian models with local shape of the primordial bispectrum, especially at large scales. On the other hand, models with equilateral shape of the primordial bispectrum show only a mild effect at all scales, that is difficult to be detected with clustering observations. Between the two catalogues, the one performing better is the \emph{e}ROSITA one, since it contains only the largest masses, that are more sensitive to primordial non-Gaussianity.
description: 13 pages, 8 figures. MNRAS in press