cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multipartite entanglement and few-body Hamiltonians
Creators: name: Pepe, Francesco V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the possibility to obtain higly multipartite-entangled states as nondegenerate eigenstates of Hamiltonians that involve only short-range and few-body interactions. We study small-size systems (with a number of qubits ranging from three to five) and search for Hamiltonians with a Maximally Multipartite Entangled State (MMES) as a nondegenerate eigenstate. We then find conditions, including bounds on the number of coupled qubits, to build a Hamiltonian with a Greenberger-Horne-Zeilinger (GHZ) state as a nondegenerate eigenstate. We finally comment on possible applications.
description: 15 pages, 3 figures. Proceedings of IQIS 2013 to appear on IJQI
Measuring Brand Equity in the petroleum Industry: the Case of Total Ethiopia
Creators: name: Mekte Negeso
Publisher: name: Zenodo
Year: 2018

description: Brands have become a major player in modern society. In fact they are everywhere. They penetrate all spheres of our life: economic, social, cultural, sporting, even religion. Brands have financial value because they have created assets in the minds and hearts of customers, distributors, prescribers, opinion leaders. Although current research focuses on building and concept of brand equity, so far it does not create the general consensus on the degree of influence that the different brand equity elements have on brand preference. The objective of the study is to examine the determinants of brand equity on the petroleum industry in Ethiopia. A conceptual framework was use to see the relationship between determinants of brand equity (Perceived quality, Brand association, brand loyalty, brand awareness) and brand equity. A quantitative approach is chosen in this research. In order to collect primary data, a structured questionnaire was adopted and was given to the Total Ethiopia S.C customers who are taken as a sample. The SPSS version 20.00 for windows was used to process the primary data which was collected through questionnaire. The findings show that all the research variables fall in the category of range between 3.52 and 3.71 which means respondents have a good opinion (agree) on that independent variables have an effect on overall brand equity. Likewise, all variables scored relatively low scales of standard deviation which tells us that the data are narrowly spread.
Dataset Bias Mitigation in Multiple-Choice Visual Question Answering and Beyond
Creators: name: Wang, Zhecan
name: Chen, Long
name: You, Haoxuan
name: Xu, Keyang
name: He, Yicheng
name: Li, Wenhao
name: Codella, Noel
name: Chang, Kai-Wei
name: Chang, Shih-Fu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Vision-language (VL) understanding tasks evaluate models' comprehension of complex visual scenes through multiple-choice questions. However, we have identified two dataset biases that models can exploit as shortcuts to resolve various VL tasks correctly without proper understanding. The first type of dataset bias is \emph{Unbalanced Matching} bias, where the correct answer overlaps the question and image more than the incorrect answers. The second type of dataset bias is \emph{Distractor Similarity} bias, where incorrect answers are overly dissimilar to the correct answer but significantly similar to other incorrect answers within the same sample. To address these dataset biases, we first propose Adversarial Data Synthesis (ADS) to generate synthetic training and debiased evaluation data. We then introduce Intra-sample Counterfactual Training (ICT) to assist models in utilizing the synthesized training data, particularly the counterfactual data, via focusing on intra-sample differentiation. Extensive experiments demonstrate the effectiveness of ADS and ICT in consistently improving model performance across different benchmarks, even in domain-shifted scenarios.
description: EMNLP 2023
Performance Estimation of 2*3 MIMO-MC-CDMA in Rayleigh Fading Channel
Creators: name: Kushwah, Mr. Atul Singh
name: Manglasheril, Mr. Sachin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper we analyze the performance of 2by3 MIMOMCCDMA system in MATLAB which greatly reduces BER by increasing the efficiency of system. MIMO and MCCDMA system arrangement is used to decrease bit error rate and also figure a new system called MCCDMA which is multiple user and multiple access system used to enhance the performance of the system. MCCDMA is a narrowband flat fading in character which changes frequency selective to several narrowband flat fading multiple parallel subcarriers to enhance the effectiveness of the system. Now this MCCDMA further improved by grouping by 2by3 MIMO system which make use of ZF decoder at the receiver to reduce BER in which half rate convolutional encoded Alamouti STBC block code is intended for channel encoding as transmit diversity for MIMO with multiple transmit and receive antennas. Main improvement of using MIMOMCCDMA is for reducing complication of system and also for dropping BER and finally increasing gain of the system. Then we estimate the system in different modulation techniques like, 64QAM, 8PSK, 16QAM, QPSK, 32QAM and 8QAM using MATLAB in Rayleigh fading channel.
description: 4 pages, 3 figures and 2 tables
Principles ofbreeding, maintaining and working with diabetic and non-diabetic BB/Wor-rats
Creators: name: Hansen, Axel Komerup
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: The background for the development of the BB/Wor-rat as a model to be used in the diabetes research is described. The most essential pathological and clinical aspects are also described. Experiences from the breeding and therapy are refered and results on lowering the incidence by treatment with cyclosporine-A and injections of immunocompetent spleen cells are given.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 16 No. 1 (1989)
Segue 1: An Unevolved Fossil Galaxy from the Early Universe
Creators: name: Frebel, Anna
name: Simon, Joshua D.
name: Kirby, Evan N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Magellan/MIKE and Keck/HIRES high-resolution spectra of six red giant stars in the dwarf galaxy Segue 1. Including one additional Segue 1 star observed by Norris et al. (2010), high-resolution spectra have now been obtained for every red giant in Segue 1. Remarkably, three of these seven stars have metallicities below [Fe/H] = -3.5, suggesting that Segue 1 is the least chemically evolved galaxy known. We confirm previous medium-resolution analyses demonstrating that Segue 1 stars span a metallicity range of more than 2 dex, from [Fe/H] = -1.4 to [Fe/H] = -3.8. All of the Segue 1 stars are alpha-enhanced, with [alpha/Fe] ~ 0.5. High alpha-element abundances are typical for metal-poor stars, but in every previously studied galaxy [alpha/Fe] declines for more metal-rich stars, which is typically interpreted as iron enrichment from supernova Ia. The absence of this signature in Segue 1 indicates that it was enriched exclusively by massive stars. Other light element abundance ratios in Segue 1, including carbon-enhancement in the three most metal-poor stars, closely resemble those of metal-poor halo stars. Finally, we classify the most metal-rich star as a CH star given its large overabundances of carbon and s-process elements. The other six stars show remarkably low neutron-capture element abundances of [Sr/H] < -4.9 and [Ba/H] < -4.2, which are comparable to the lowest levels ever detected in halo stars. This suggests minimal neutron-capture enrichment, perhaps limited to a single r-process or weak s-process synthesizing event. Altogether, the chemical abundances of Segue 1 indicate no substantial chemical evolution, supporting the idea that it may be a surviving first galaxy that experienced only one burst of star formation.
description: ApJ, accepted, 20 pages (emulateapj), 9 figures
A study of lung lesions in asymptomatic rabbits naturally infected with B. bronchiseptica
Creators: name: Uzal, Francisco A.
name: Feinstein, Ricardo E.
name: Persson, Lena
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: A histological study of lungs performed in 40 rabbits carrying a naturally acquired subclinical B. bronchiseptica infection revealed chronic inﬂammatory pulmonary lesions in 38 rabbits, B. bronchiseptica was the only agent consistently isolated from lungs. Pasteurella spp. was not isolated from any animal. B. bronchiseptica infected rabbits frequently displayed changes characterized by a simultaneous occurrence of focal chronic interstitial pneumonia, vascular and perivascular inﬁltration of monocytes and lymphoid cells, and inﬂammation ofbronchi and bronchioli.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 16 No. 1 (1989)
Structural failure of two-density-layer cohesionless biaxial ellipsoids
Creators: name: Hirabayashi, Masatoshi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: This paper quantitatively evaluates structural failure of biaxial cohesionless ellipsoids that have a two-density-layer distribution. The internal density layer is modeled as a sphere, while the external density layer is the rest of the part. The density is supposed to be constant in each layer. The present study derives averaged stresses over the whole volume of these bodies and uses limit analysis to determine their global failure. The upper bound condition of global failure is considered in terms of the size of the internal layer and the aspect ratio of the shape. The result shows that the two-density-layer causes the body to have different strength against structural failure.
description: 9 pages, 3 figures, Icarus, Accpected
A method for intramedullary fixation offractures and segmental grafts in the rat tibia
Creators: name: Nordsletten, Lars
name: Skjedal, Sigmund
name: Kirkeby, Ole J
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: A new technique for intramedullary nailing ot the tibia in rats is described. The results of fracture and segmental graft fixations with the nail are presented. The modular nail consists of three parts that are threaded into and past each other, giving it a conical outer diameter which fits the tibial inedullary canal. The biomechanieal properties of this nail are similar to those ofintact tibias of 230 g male rats. which makes it suitable for experiments with rats weighing more than 200 g.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 19 No. 2 (1992)
Stable Lithium Electrodeposition in Liquid and Nanoporous Solid Electrolytes
Creators: name: Lu, Yingying
name: Tu, Zhengyuan
name: Archer, Lynden
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Rechargeable lithium, sodium, and aluminum metal-based batteries are among the most versatile platform for high-energy, cost effective electrochemical energy storage. Non-uniform metal deposition and dendrite formation on the negative electrode during repeated cycles of charge and discharge are major hurdles to commercialization of energy storage devices based on each of these chemistries. A long held view is that unstable electrodeposition is a consequence of inherent characteristics of these metals and their inability to form uniform electrodeposits on surfaces with inevitable defects. We report on electrodeposition of lithium in simple liquid electrolytes and in nanoporous solids infused with liquid electrolytes. We find that simple liquid electrolytes reinforced with halogenated salt blends exhibit stable long-term cycling at room temperature, often with no signs of deposition instabilities over hundreds of cycles of charge and discharge and thousands of operating hours. We rationalize these observations with the help of surface energy data for the electrolyte/lithium interface and impedance analysis of the interface during different stages of cell operation. Our findings provide support for an important recent theoretical prediction that the surface mobility of lithium is significantly enhanced in the presence of lithium halide salts.
The aerobic bacterial flora of laboratory rats from a danish breeding centre
Creators: name: Hansen, Axel Kornerup
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: The aerobic bacterial flora of barrier-maintained laboratory rats from 12 ditferent units was examined by the use of non-seleetive bacteriological cultivation. All rats were randomly sampled healthy rats. The number of infected clonies out of the total number of examined colonies is given with the mean prevalence observed within the colonies for each of the bacterial species identified. The minimal sample size for detection of the organisms in routine microbiological] monitoring is estimated on basis 01' the prevalences observed. Bacterial species from the groups Micrococcaceae, Streptococcaceae, Lactobacillus spp, Bacillus spp, Corynebacterium spp. Enterobacteriaceae, Neisseriaceae, Pasteurellaceae and Pseudomanadaceae were found. The most frequently isolated species was Staphylococcus aureus in the respiratory organs and Escericia coli in the intestines. The prevalence of the different bacterial species within the colonies varied from 3.1 to 69.3. The minimal sample size for each bacterial species varies from 3 to 95.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 19 No. 2 (1992)
Performance Estimation of 2*3 MIMO-MC-CDMA using Convolution Code
Creators: name: Kushwah, Atul Singh
name: Manglasheril, Sachin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper we estimate the performance of 2by3 MIMOMCCDMA system using convolution code in MATLAB which highly reduces BER by increasing the efficiency of system. MIMO and MCCDMA system combination is used to reduce bit error rate and also for forming a new system called MCCDMA which is multi user and multiple access schemes used to increase the performance of the system. MCCDMA system is a narrowband flat fading in nature which converts frequency selective to numerous narrowband flat fading multiple parallel sub-carriers to increase the efficiency of the system. Now this MCCDMA system can also be enhanced by grouping with 2by3 MIMO system which utilizes ZF decoder at the receiver to decrease BER in which half rate convolutionally encoded Alamouti STBC block code is used for channel encoding scheme as transmit diversity of MIMO with multiple transmit antenna. And convolution encoder is also used as source encoder or FEC encoder in MIMOMCCDMA. Advantage of using MIMO-MC-CDMA using convolution code is due to reduce complexity of system and also for reducing BER and finally to increase gain of system. Now after this we examine system in various modulation techniques like, 8PSK, 16QAM, QPSK, 32QAM, 8QAM and 64QAM using MATLAB in Rayleigh fading channel.
description: 5 pages, 5 figures and 2 tables
title: Essays on the Predictive Content of Option Prices and Tail Uncertainty of Asset Returns
Creators: name: Apergis, Iraklis
Publisher: name: University of Kent
Year: 2022

description: This thesis explores two key elements that have been the subject of academic and practical review for many years. First is the identification of predictors of the equity premium, and second is the construction of a profitable portfolio. The first two empirical studies employ established techniques that can categorise predictors as either strong, relatively strong, or weak, based on their predictive performance across different parts of their distribution (quantiles), alongside other techniques that combine forecasts from different univariate, or multivariate models. The academic literature for the last years has conformed around the validity of certain economic indicators, which this thesis aims to expand by employing information from the option markets. In the first exercise, the information from the CBOE indices is targeted, with a somewhat weak performance in generating out-of-sample point forecasts. The VIX index was the dominantly selected variable out of all the CBOE indices. While there were no significant values across allquantiles consistently, all in all, there is evidence that some of the indices have predictive information on a few selected quantile levels. The second exercise further expands from the indices and employs directly option-implied information from the market. These,now daily frequented, variables were consistently selected by the penalising out-of-sample algorithm, and proved to be selected over any of the other economic variables that the literature had already established. Density forecasts were as well created. However, there was some evidence to suggest that only a minority of the option-implied information could provide significant density forecasts. The final exercise inspired by the density forecasts employs a Bayesian approach in order to estimate future values and risk of the asset's distributional parameters. This application allowed for creating a constantly short-long position that proved to yield a positive cumulative return by the end of the trading positions.
Tuning the topological character of half-Heusler systems: A comparative study on Y$T$Bi ($T$ = Pd, Pt)
Creators: name: Souza, J. C.
name: Crivillero, M. V. Ale
name: Dawczak-Dębicki, H.
name: Ptok, Andrzej
name: Pagliuso, P. G.
name: Wirth, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Half-Heusler systems host a plethora of different ground states, especially with non-trivial topology. However, there is still a lack of spectroscopic insight into the corresponding band inversion in this family. In this work, we locally explore the half-Heuslers Y$T$Bi ($T =$ Pt and Pd) by means of scanning tunneling microscopy/spectroscopy. From our analysis of the (120) surface plane, we infer that the increase of the spin--orbit coupling upon going from Pd to Pt is the main player in tuning the surface states from trivial to topologically non-trivial. Our measurements unveil a ($2 \times 1$) reconstruction of the (120) surface of both systems. Using density functional theory calculations, we show that the observed different behavior of the local density of states near the Fermi level in these two materials is directly related to the presence of metallic surface states. Our work sheds new light on a well known tunable family of materials and opens new routes to explore the presence of topological states of matter in half-Heusler systems and its microscopic observation.
description: 16 pages, 12 figures. To appear in Phys. Rev. B
Failure to induce proliferative ileitis in golden hamsters (Mesocricetus auratus) by simultaneous infection with Campulobaclerjejuni and Escherichia coli
Creators: name: Faroug, M
name: Wullenweber, M
name: Kunstyr, I
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: Conventionally bred golden hamsters (CH) and selectively decontaminated golden hamsters (DH) of a strain Han: AURA were experimentally infected with Campylobacter jejuni (C. jejuni) strain isolated from a case of proliferative ileitis and one of four Escherichia C011 (E. 6011) strains of either porcine or human origin (serovars 0124 0138 and 0143) Experimental infection was monitored 32 days post infectionem by watching the c1inica1 signs of diarrhoea by cultivation of the infective agents and by detection of specific IgG antibodies (indirect immunofluorescence technique). All animals infected with C. jejuni alone remained healthy. No combination of C. jejuni and E. coli led to enteritis and diarrhoea. The enteritis induced by mono-infeetion with l? 6011' 0138 1t+ showed histologic signs of an acute process unlike changes characteristic for proliferative ileitis. Surprisingly, the addition of C. jejuni to this disease provoking E. coli strain prevented the disease. The results suggest that simultaneous infection withC. jejuni and E. coli is not the cause of pro: literative ileitis in hamsters. These findings support the results Stiils (1991) describing a new intracellular bacterium as a real etiologic agent of the disease.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 19 No. 2 (1992)
An Algorithm for Radiation Magnetohydrodynamics Based on Solving the Time-dependent Transfer Equation
Creators: name: Jiang, Yan-Fei
name: Stone, James M.
name: Davis, Shane W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: (Abridged) We describe a new algorithm for solving the coupled frequency-integrated transfer equation and the equations of magnetohydrodynamics when the light-crossing time is only marginally shorter than dynamical timescales. The transfer equation is solved in the mixed frame, including velocity dependent source terms accurate to O(v/c). An operator split approach is used to compute the specific intensity along discrete rays, with upwind monotonic interpolation used along each ray to update the transport terms, and implicit methods used to compute the scattering and absorption source terms. Conservative differencing is used for the transport terms, which ensures the specific intensity (as well as energy and momentum) are conserved along each ray to round-off error. The use of implicit methods for the source terms ensures the method is stable even if the source terms are very stiff. To couple the solution of the transfer equation to the MHD algorithms in the Athena code, we perform direct quadrature of the specific intensity over angles to compute the energy and momentum source terms. We present the results of a variety of tests of the method, such as calculating the structure of a non-LTE atmosphere, an advective diffusion test, linear wave convergence tests, and the well-known shadow test. We use new semi-analytic solutions for radiation modified shocks to demonstrate the ability of our algorithm to capture the effects of an anisotropic radiation field accurately. Since the method uses explicit differencing of the spatial operators, it shows excellent weak scaling on parallel computers. The method is ideally suited for problems in which characteristic velocities are non-relativistic, but still within a few percent or more of the speed of light. The method is an intermediate step towards algorithms for fully relativistic flows.
description: 15 pages, 16 figures, submitted to ApJS
A Framework for Self-Tuning Optimization Algorithm
Creators: name: Yang, Xin-She
name: Deb, Suash
name: Loomes, M.
name: Karamanoglu, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: Data Structures and Algorithms (cs.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 80M50

description: The performance of any algorithm will largely depend on the setting of its algorithm-dependent parameters. The optimal setting should allow the algorithm to achieve the best performance for solving a range of optimization problems. However, such parameter-tuning itself is a tough optimization problem. In this paper, we present a framework for self-tuning algorithms so that an algorithm to be tuned can be used to tune the algorithm itself. Using the firefly algorithm as an example, we show that this framework works well. It is also found that different parameters may have different sensitivities, and thus require different degrees of tuning. Parameters with high sensitivities require fine-tuning to achieve optimality.
description: 12 pages
Manuais para constituição de comunidades de energia renovável em Portugal.
Creators: name: Dias, Miguel
Publisher: name: Zenodo
Year: 2020
Subjects: Comunidades de Energia Renovável;

description: Manuais do processo de constituição de comunidades de energia renovável e autoconsumos coletivos segundo o despacho nº46/2019 da DGEG auxiliados por uma ferramenta para simular os benefícios económicos e energéticos da partilha de energia gerada por um sistema fotovoltaico.
Reproductive hormone patterns in the female guinea-pig serum during the estrous cycle
Creators: name: Hammarström, Margareta
name: Ricksten, Anne-Marie
name: Eneroth, Peter
Publisher: name: Scandinavian Journal of Laboratory Animal Sciences
Year: 2019

description: A study on hormone levels in daily consecutive serum samples during the guinea-pig estrous cycle was performed. Radioimmunoassay (RIA) of immunoreactive LH, FSH and prolactin (IR—LH IR-FSH and lR-prolaetin) developed for determination of rat pituitary hormone was used as well as RIA systems for estradiol-17β and progesterone. In oophorectomized animals estradiol, progesterone and IR-prolactin were undetectable while mean IR- LH and IR-FSH levels were 1.23 ug/l and 1.47 ug/l respectively as expressed in terms of rat hormone references. Prolactin could not be detected in serum during the reproductive cycle. During estrous cycles progesterone showed a biphasic pattern with undetectable levels (< 0.6 nmol/l) around ovulation. Increased levels were observed at the time of implantation. Estradiol-17β concentrations at non-surge time ranged between 0 and 116 pmol/l and a preovulatory peak (mean peak value 142.2 pmol) was noted. Serum IR-LH levels were between 0.2 and 0.8 pg/l and a prcovulatory peak was noted. Furthermore, a preovulatory lR—FSH peak was found (mean peak value 72.7 pg/l). The results indicate a close resemblance to the human reproductive cycle and the guinea-pig is suggested to be the laboratory animal ofchoice for studies on reproduction.
description: Scandinavian Journal of Laboratory Animal Sciences, Vol. 19 No. 1 (1992)
Sentido literário e função social do Realismo em dois romances latino- americanos da década de 1910: Triste fim de Policarpo Quaresma, de Lima Barreto, e En este país...!, de Urbaneja Achelpohl / Literary Sense and Social Function of Realism in Two Latin American Novels of the 1910s: Triste Fim de Policarpo Quaresma, by Lima Barreto, and En este país...!, by Urbaneja Achelpohl
Creators: name: Marquez Arreaza, Dionisio
Publisher: name: Zenodo
Year: 2016
Subjects: Lima Barreto; Urbaneja Achelpohl; romance; naturalismo literário; Novel; Literary Naturalism

description: POR: Na representação do cotidiano e do sistema de organização social, a ficção no início do século XX apresenta a descrição tipicamente naturalista do indivíduo no meio, mas colocado num lugar próprio, no caso, uma sociedade latino-americana específica. Nesse trabalho, observo a recepção crítica de Triste fim de Policarpo Quaresma (1915), do escritor brasileiro Affonso Henriques de Lima Barreto (1881-1922), e En este país...! (1920), do venezuelano Luis Manuel Urbaneja Achelpohl (1873-1937), em seus respectivos países, para estudar o sentido e função dessa obras dentro do estilo realista, em certa medida, de corte naturalista.

EN: In regards to the representation of the everyday and the system of social organization, fiction in the early Twentieth Century presents the typically naturalistic description of the individual in the milieu, but placed in a proper place, in this case, a specific Latin American society. In this work, I observe the critical reception of Triste fim de Policarpo Quaresma (1915), by the Brazilian writer Affonso Henriques de Lima Barreto (1881-1922), and En este país...! (1920), by the Venezuelan Luis Manuel Urbaneja Achelpohl (1873-1937), in their respective countries, to study the meaning and function of these works within the realistic, to a certain extent, naturalist style.
Ponderomotive forces on waves in modulated media
Creators: name: Dodin, I. Y.
name: Fisch, N. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nonlinear interactions of waves via instantaneous cross-phase modulation can be cast in the same way as ponderomotive wave-particle interactions in high-frequency electromagnetic field. The ponderomotive effect arises when rays of a probe wave scatter off perturbations of the underlying medium produced by a second, modulation wave, much like charged particles scatter off a quasiperiodic field. Parallels with the point-particle dynamics, which itself is generalized by this theory, lead to new methods of wave manipulation, including asymmetric barriers for light.
Mathoid: Robust, Scalable, Fast and Accessible Math Rendering for Wikipedia
Creators: name: Schubotz, Moritz
name: Wicke, Gabriel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Wikipedia is the first address for scientists who want to recap basic mathematical and physical laws and concepts. Today, formulae in those pages are displayed as Portable Network Graphics images. Those images do not integrate well into the text, can not be edited after copying, are inaccessible to screen readers for people with special needs, do not support line breaks for small screens and do not scale for high resolution devices. Mathoid improves this situation and converts formulae specified by Wikipedia editors in a TeX-like input format to MathML, with Scalable Vector Graphics images as a fallback solution.
description: 12 pages, accepted at Conferences on Intelligent Computer Mathematics CICM2014
On the fine structure of the Cepheid metallicity gradient in the Galactic thin disk
Creators: name: Genovali, K.
name: Lemasle, B.
name: Bono, G.
name: Romaniello, M.
name: Fabrizio, M.
name: Ferraro, I.
name: Iannicola, G.
name: Laney, C. D.
name: Nonino, M.
name: Bergemann, M.
name: Buonanno, R.
name: Francois, P.
name: Inno, L.
name: Kudritzki, R. -P.
name: Matsunaga, N.
name: Pedicelli, S.
name: Primas, F.
name: Thevenin, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present homogeneous and accurate iron abundances for 42 Galactic Cepheids based on high-spectral resolution (R~38,000) high signal-to-noise ratio (SNR>100) optical spectra collected with UVES at VLT (128 spectra). The above abundances were complemented with high-quality iron abundances provided either by our group (86) or available in the literature. We paid attention in deriving a common metallicity scale and ended up with a sample of 450 Cepheids. We also estimated for the entire sample accurate individual distances by using homogeneous near-infrared photometry and the reddening free Period-Wesenheit relations. The new metallicity gradient is linear over a broad range of Galactocentric distances (Rg~5-19 kpc) and agrees quite well with similar estimates available in the literature (-0.060+/-0.002 dex/kpc). We also uncover evidence which suggests that the residuals of the metallicity gradient are tightly correlated with candidate Cepheid Groups (CGs). The candidate CGs have been identified as spatial overdensities of Cepheids located across the thin disk. They account for a significant fraction of the residual fluctuations, and in turn for the large intrinsic dispersion of the metallicity gradient. We performed a detailed comparison with metallicity gradients based on different tracers: OB stars and open clusters. We found very similar metallicity gradients for ages younger than 3 Gyrs, while for older ages we found a shallower slope and an increase in the intrinsic spread. The above findings rely on homogeneous age, metallicity and distance scales. Finally we found, by using a large sample of Galactic and Magellanic Cepheids for which are available accurate iron abundances, that the dependence of the luminosity amplitude on metallicity is vanishing.
description: Accepted in A&A, 11 figures, 7 tables
The influence of globular cluster evolution on the specific frequency in dwarf galaxies
Creators: name: Moreno-Hilario, Elizabeth
name: Martinez-Medina, Luis A.
name: Li, Hui
name: Souza, Stefano O.
name: Pérez-Villegas, Angeles
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dwarf galaxies are known to exhibit an unusual richness in numbers of globular clusters (GCs), property quantified by the specific frequency ($S_N$), which is high for dwarf and giant elliptical galaxies, but with a minimum for intermediate-mass galaxies. In this work we study the role that GC evolution has in setting this trend, for which we use ${\it N}$-body simulations to evolve GCs in dwarf galaxies and quantify their disruption efficiency. We selected five individual dwarf galaxies from a high-resolution cosmological simulation, which includes GC formation and follow-up of their paths inside the host galaxy. Then, the tidal history of each GC is coupled to NBODY6++GPU to produce ${\it N}$-body models that account for both, the interaction of GCs with their galactic environment and their internal dynamics. This results in a GC mass loss parameterization to estimate dissolution times and mass loss rates after a Hubble time. GC evolution is sensitive to the particular orbital histories within each galaxy, but the overall result is that the amount of mass that GC systems lose scales with the mass (and density) of the host galaxy, i.e., the GC mass loss efficiency is lowest in low-mass dwarfs. After a 12 Gyr evolution all simulated GC systems retain an important fraction of their initial mass (up to 25%), in agreement with the high GC to field star ratios observed in some dwarfs, and supports the scenario in which GC disruption mechanisms play an important role in shaping the GC specific frequency in dwarf galaxies.
description: 16 pages, 11 figures, 4 tables. Accepted for publication in MNRAS
Reporting quality and data sharing for acupuncture randomized controlled trials
Creators: name: Yu, Lin
name: Duan, Yuting
name: Xu, Zhirui
name: Li, Xinyu
name: Zhao, Pinge
name: Wu, Shengwei
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences
subject: acupuncture
subject: data sharing
subject: open science practices
subject: reporting quality

description: Randomized Controlled Trials (RCTs) play an important role in evidence-based medicine. Acupuncture RCTs have been increasing rapidly these years, but the reporting quality and data sharing level of acupuncture RCTs are not clear.
A self-referenced single-electron quantized-current source
Creators: name: Fricke, Lukas
name: Wulf, Michael
name: Kaestner, Bernd
name: Hohls, Frank
name: Mirovsky, Philipp
name: Mackrodt, Brigitte
name: Dolata, Ralf
name: Weimann, Thomas
name: Pierz, Klaus
name: Siegner, Uwe
name: Schumacher, Hans W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: With the anticipated redefinition of the international system of units (SI) the base units will be linked to fundamental constants of nature [1]. As for the electrical base unit "Ampere", it will be linked to the elementary charge e, requiring a corresponding quantum standard [2, 3]. Many concepts for such a standard have been investigated [4-14] relying on controlling the time-dependent tunnelling of electrons. However, the stochastic nature of quantum mechanical tunnelling intrinsically evokes uncontrolled deviations from the nominally quantized current. Alternatively, the counting of electrons [15, 16] has been explored but is severely limited in current amplitude and uncertainty by the low detector bandwidth. The late M. Wulf proposed [17] that this fundamental problem of electrical quantum metrology could be overcome by combining serial single-electron pumps with charge detectors allowing the generation of a quantized current and the in-situ detection of its stochastic deviations. Here, we experimentally demonstrate such quantized-current generation with in-situ detection of tunnelling errors at low frequencies and a reduction of the total current uncertainty by more than one order of magnitude. After frequency scaling this should enable a validated primary standard for the redefined SI base unit Ampere.
High-order harmonic generation at high laser intensities beyond the tunnel regime
Creators: name: Pérez-Hernández, J. A.
name: Ciappina, M. F.
name: Lewenstein, M.
name: Zaïr, A.
name: Roso, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present studies of high-order harmonic generation (HHG) at laser intensities well above saturation. We use driving laser pulses which present a particular electron dynamics in the turn-on stage. Our results predict an increasing on the harmonic yield, after an initial dropping, when the laser intensity is increased. This fact contradicts the general belief of a progressive degradation of the harmonic emission at ultrahigh intensities. We have identified a particular set of trajectories which emerges in the turn-on stage of these singular laser pulses, responsible of the unexpected growth on the harmonic efficiency at this high intensity regime. Our study combines two complementary approaches: classical analysis and full quantum mechanical calculations resulting from the numerical integration of the 3-dimensional time-dependent Schrödinger equation complemented with the time-frequency analysis.
Signatures of metal-insulator and topological phase transitions in the entanglement of one-dimensional disordered fermions
Creators: name: Mondragon-Shem, Ian
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study one-dimensional disordered fermions that either undergo metal-insulator transitions or topological phase transitions to become trivial Anderson insulators. We focus on using entanglement to elucidate how the spatial, momentum, and internal degrees of freedom of fermions are affected by the presence of disorder in such cases. We develop entanglement tools that reveal the existence of metallic states in the presence of disorder and further show clear signatures of the corresponding localization transition even in the presence of interactions. In systems where the internal degrees of freedom are coupled with the motion of the electrons, topological phases develop. We subject a topological insulator model to different types of disorder and discuss how the topological aspects of the system can be captured through entanglement, even at strong disorder.
description: 20 pages, 12 figures
The Revised IRAS-FSC Redshift Catalogue (RIFSCz)
Creators: name: Wang, Lingyu
name: Rowan-Robinson, Michael
name: Norberg, Peder
name: Heinis, Sebastien
name: Han, Jiaxin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a Revised IRAS-FSC Redshift Catalogue (RIFSCz) of 60,303 galaxies selected at 60 microns from the IRAS Faint Source Catalogue (FSC). This revision merges in data from the WISE All-Sky Data Release, the Tenth SDSS Data Release (DR10), the GALEX All-Sky Survey Source Catalog (GASC), the 2MASS Redshift Survey (2MRS) and the Planck Catalogue of Compact Sources (PCCS). The RIFSCz consists of accurate position, ultra-violet (UV), optical, near-, mid- and far-infrared, sub-millimetre (sub-mm) and/or radio identifications, spectroscopic redshift (if available) or photometric redshift (if possible), predicted far-infrared and sub-mm fluxes ranging from 12 to 1380 microns based upon the best-fit infrared template. We also provide stellar masses, star-formation rates and dust masses derived from the optical and infrared template fits, where possible. 56 of the galaxies in the RIFSCz have spectroscopic redshifts and a further 26 have photometric redshifts obtained through the template-fitting method. At S60 > 0.36 Jy, the 90% completeness limit of the FSC, 93 of the sources in the RIFSCz have either spectroscopic or photometric redshifts. An interesting subset of the catalogue is the sources detected by Planck at sub-mm wavelengths. 1200 sources have a detection at better than 5 sigma in at least one Planck band and a further 1186 sources have detections at 3-5 sigma in at least one Planck band.
description: 17 pages, 19 figures, 2 tables, submitted to MNRAS
Automated Fabric Defect Inspection: A Survey of Classifiers
Creators: name: Habib, Md. Tarek
name: Faisal, Rahat Hossain
name: Rokonuzzaman, M.
name: Ahmed, Farruk
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Quality control at each stage of production in textile industry has become a key factor to retaining the existence in the highly competitive global market. Problems of manual fabric defect inspection are lack of accuracy and high time consumption, where early and accurate fabric defect detection is a significant phase of quality control. Computer vision based, i.e. automated fabric defect inspection systems are thought by many researchers of different countries to be very useful to resolve these problems. There are two major challenges to be resolved to attain a successful automated fabric defect inspection system. They are defect detection and defect classification. In this work, we discuss different techniques used for automated fabric defect classification, then show a survey of classifiers used in automated fabric defect inspection systems, and finally, compare these classifiers by using performance metrics. This work is expected to be very useful for the researchers in the area of automated fabric defect inspection to understand and evaluate the many potential options in this field.
description: 9 pages, 4 figures, 2 tables
The availability of research data declines rapidly with article age
Creators: name: Vines, Timothy
name: Albert, Arianne
name: Andrew, Rose
name: Debarré, Florence
name: Bock, Dan
name: Franklin, Michelle
name: Gilbert, Kimberley
name: Moore, Jean-Sébastien
name: Renaut, Sébastien
name: Rennison, Diana J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Digital Libraries (cs.DL)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Policies ensuring that research data are available on public archives are increasingly being implemented at the government [1], funding agency [2-4], and journal [5,6] level. These policies are predicated on the idea that authors are poor stewards of their data, particularly over the long term [7], and indeed many studies have found that authors are often unable or unwilling to share their data [8-11]. However, there are no systematic estimates of how the availability of research data changes with time since publication. We therefore requested datasets from a relatively homogenous set of 516 articles published between 2 and 22 years ago, and found that availability of the data was strongly affected by article age. For papers where the authors gave the status of their data, the odds of a dataset being extant fell by 17% per year. In addition, the odds that we could find a working email address for the first, last or corresponding author fell by 7% per year. Our results reinforce the notion that, in the long term, research data cannot be reliably preserved by individual researchers, and further demonstrate the urgent need for policies mandating data sharing via public archives.
description: 14 pages, 2 figures
Measurement of the Kr XVIII 3d $^2D_{5/2}$ lifetime at low energy in a unitary Penning trap
Creators: name: Guise, Nicholas D.
name: Tan, Joseph N.
name: Brewer, Samuel M.
name: Fischer, Charlotte F.
name: Jönsson, Per
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A different technique is used to study the radiative decay of a metastable state in multiply ionized atoms. With use of a unitary Penning trap to selectively capture Kr$^{17+}$ ions from an ion source at NIST, the decay of the 3d $^2D_{5/2}$ metastable state is measured in isolation at low energy, without any active cooling. The highly ionized atoms are trapped in the fine structure of the electronic ground configuration with an energy spread of 4(1) eV, which is narrower than within the ion source by a factor of about 100. By observing the visible 637 nm photon emission of the forbidden transition from the 3d $^2D_{5/2}$ level to the ground state, we measured its radiative lifetime to be $τ=$ 24.48 ms +/- 0.28(stat.) ms +/- 0.14(syst.) ms. Remarkably, various theoretical predictions for this relativistic Rydberg atom are in agreement with our measurement at the 1% level.
description: 5 pages, 3 figures
A Novel Self-Recognition Method for Autonomic Grid Networks Case Study: Advisor Labor Law Software Application
Creators: name: Bahrami, Mehdi
name: arebi, Peyman
name: Bakhshizadeh, Hosseyn
name: Barangi, Hamed
Publisher: name: arXiv
Year: 2014
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Recently, Grid Computing Systems have provided wide integrated use of resources. Grid computing systems provide the ability to share, select and aggregate distributed resources as computers, storage systems or other devices in an integrated way. Grid computing systems have solved many problems in science, engineering and commerce fields. In this paper we introduce a self-recognition algorithm for grid network and introduced this algorithm to have exclusive management control on the autonomic grid networks. This algorithm is base on binomial heap to allocate and recognition any node in the grid. We try to using this algorithm in advisor labor law software application as case study and shown in this application how to use this method for any advisor application on the network. By this implementation model shown this method can get better answer to any question as a best labor law advisor.