Miracle-dz/UniFAR-FTUs huggingface dataset:
P o S ( N I C X I ) 0 7 4 r-Process Enhanced Metal-Poor Stars

In this review we summarize the current state of some aspects of observational studies of low metallicity stars that have been enriched with products of r apid-neutron-capture ( r-process) nucleosynthesis events. Attention will be drawn to the elemen t domains where there is little star-tostar variation in relative abundances (such as the rare eart hs), and those with substantial variations (the lightest neutron-capture elements and the very heavy r adioactive elements Th and U). We highlight some new work bearing on our understanding of the l imits of abundance distributions that can be produced in the r-process. Finally, comments will be made on the metallicity at which significant contributions from the s-process can be seen in Galactic halo stars.
Economic and environmental assessment of high‐strength steel grades

Environmental impact awareness in civil engineering is nowadays an important concern. The last message from the IPCC (Intergovernmental Panel on Climate Change) was clear: significant actions are mandatory and urgent to achieve the objective to limit global warming to 1.5°C. The building sector is one of the most polluting industrial sectors for which economically viable solutions must be found to cut the emissions. The development of new production technologies can contribute to this aim by creating innovative and more sustainable materials. Amongst the new materials that appear on the steel market, high strength steels are a nice example as they offer higher strength to weight ratio of structural steel elements, resulting in material savings, lighter foundations, easier transportation, and erection. These multiple advantages explain why the use of high strength steels could lead to both significant carbon emission and cost savings. However, the production of such steels uses more alloying elements and sometimes they require more production energy than for regular grades. The aim of this paper is to estimate the relative prices and relative carbon emissions of high strength steels to evaluate whether they constitute sustainable materials. This paper demonstrates that, in many cases, the increase of relative prices and carbon emissions as function of yield strength can be negligible by contrast to the weight savings induced by using high strength steels.
DIVERSITY OF COMPLEX CELL RESPONSES IN V 1 OF ALERT MONKEYS

We have previously shown that most cells in the alert monkey V1 are complex cells with overlapping increment and decrement activating regions and nonlinear response properties. Diverse responses of these cells to drifting gratings differ from the unmodulated firing usually ascribed to complex cells, and cannot be predicted from receptive field spatial maps. We recorded extracellular responses in V1 of macaques performing a fixation task, while systematically varying spatial and temporal frequency and width of the grating patch. The distribution of relative modulation (F1/F0) was not bimodal. Some cells responded with pseudolinear (F1) modulation to mid-to-high temporal frequency gratings, but showed frequency doubled (F2) or mixed (F1, F2, F3 harmonics) responses at low temporal frequencies. Grating spatial frequency and width profoundly influenced the modulation in most cells. The main patterns were: F2 responses to gratings of very low spatial frequency and/or small width; decrease of F2 and increase of F1 with increase of spatial frequency and/or width; decrease of F1 and appearance of "subharmonic" modulation around 3 Hz with further increase of spatial frequency; increase of relative F1 component with grating width. Finally, the responses of many cells to stationary gratings of mid-to-high spatial frequency unexpectedly exhibited robust low frequency modulation in the range similar to the "subharmonic" modulation elicited by drifting gratings. Thus, the form of the response, not only the amplitude, depended on stimulus parameters. The existing models of cortical cells do not account for the response diversity exhibited by complex cells. These results suggest an alternative complex cell model based on dynamic interactions between increment and decrement ARs and surround.
AGGREGATHOR: Byzantine Machine Learning via Robust Gradient Aggregation

We present A GGREGA T HOR , a framework that implements state-of-the-art robust ( Byzantine-resilient ) distributed stochastic gradient descent. Following the standard parameter server model, we assume that a minority of worker machines can be controlled by an adversary and behave arbitrarily. Such a setting has been theoretically studied with several of the existing approaches using a robust aggregation of the workers’ gradient estimations. Yet, the question is whether a Byzantine-resilient aggregation can leverage more workers to speed-up learning. We answer this theoretical question, and implement these state-of-the-art theoretical approaches on A GGREGA T HOR , to assess their practical costs. We built A GGREGA T HOR around TensorFlow and introduce modiﬁcations for vanilla TensorFlow towards making it usable in an actual Byzantine setting. A GGREGA T HOR also permits the use of unreliable gradient transfer over UDP to provide further speed-up (without losing the accuracy) over the native communication protocols (TCP-based) of TensorFlow in saturated networks. We quantify the overhead of Byzantine resilience of A GGREGA T HOR to 19% and 43% (to ensure weak and strong Byzantine resilience respectively) compared to vanilla TensorFlow.
Robotics to develop computational thinking in early Childhood Education

The development of programming skills is currently promoting from an early school age, trying to get children to take an active and creative role in the use of technologies. The objective of this article is to verify the repercussion of educational robotics activities on kindergarten students in the acquisition of computational thinking and programming skills. The research design is quasi-experimental, with pre-test and post-test measures, using experimental and control groups. The sample consists of 131 students from the second cycle of early education (between 3 and 6 years old), all from the same Spanish school. Computational thinking is measured through three dimensions: sequences (algorithms), action-instruction correspondence and debugging. The intervention sessions, as well as the structure of the challenges that were used in the pre- and post-test evaluations, were designed based on the reference program of robotics studies called “TangibleK”. The intervention, carried out doing learning activities using educational robotics resources, presents positive results in relation to the computational thinking skills achieved. The differences between the pre-test and the post-test in the experimental and control groups are statistically significant, in that children engaged in robotics program achieves a greater advance in the three dimensions of computational competence through this method. Actualmente se promueve el desarrollo de habilidades de programación desde una edad escolar temprana, tratando de que los niños adquieran un rol activo y creativo en el uso de las tecnologías. El objetivo de este trabajo es comprobar la repercusión del desarrollo de actividades de robótica educativa en la adquisición de habilidades de pensamiento computacional y programación en escolares de educación infantil. El diseño de la investigación es de tipo cuasi-experimental, con medidas pretest y postest, utilizando grupo experimental y control. La muestra la conforman 131 estudiantes del segundo ciclo de educación infantil (entre 3 y 6 años de edad) de un centro educativo español. El pensamiento computacional se mide a través de tres dimensiones: secuencias (algoritmos), correspondencia acción-instrucción y depuración. Las sesiones de intervención, así como la estructura de los retos que se utilizaron en las evaluaciones pre y postest fueron diseñadas tomando como base el programa de estudios en robótica denominado «TangibleK». La intervención, centrada en actividades de aprendizaje mediante recursos de robótica educativa, presenta resultados positivos en relación a las habilidades de pensamiento computacional logradas. Las diferencias encontradas entre el pre y postest en el grupo experimental son estadísticamente significativas y superiores a las presentadas en el grupo control, de modo que se concluye que los niños que realizan el programa de robótica consiguen un mayor avance en las tres dimensiones de la competencia computacional.
Brain Stimulation Editor: Professor Vincent Walsh The involvement of Posterior Parietal Cortex and Frontal Eye Fields in Spatially Primed Visual Search

Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Brain stimulation. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Brain stimulation, 5/1, January 2012, 10.1016/j.brs. 2011.01. 005.
Frustrated Magnetism in Mott Insulating ð V

ðV1−xCrxÞ2O3 J. C. Leiner, H. O. Jeschke, R. Valentí, S. Zhang, A. T. Savici, J. Y. Y. Lin, M. B. Stone, M. D. Lumsden, Jiawang Hong, O. Delaire, Wei Bao, and C. L. Broholm Center for Correlated Electron Systems, Institute for Basic Science (IBS), Seoul 08826, Korea and Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany Institute for Quantum Matter and Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218, USA School of Aerospace Engineering, and Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA Department of Mechanical Engineering and Materials Science and Department of Physics, Duke University, Durham, North Carolina 27708, USA Department of Physics, Renmin University of China, Beijing 100872, China
Unit Root Tests Using the ADF-Sieve Bootstrap and the Rank Based DF Test Statistic : Empirical Evidence

In this paper we consider unit root tests under general time series models, including long-memory processes. The first test is a modified version of the ADF (Augmented Dickey-Fuller) sieve bootstrap test given in Chang and Park (2003) to test unit root process. The test is based on an approximation of the ARFIMA (fractionally differenced autoregressive moving average) model, where the fractional parameter is estimated by semi-parametric approaches.The second test under study is a rank based Dickey-Fuller test (RDF). The empirical power of the tests are investigated through Monte Carlo simulations under general time series models, including long-memory processes. The slight modification of the unit root sieve bootstrap test proposed here gives, in general, higher power than the ADF test. The rank based DF test for a unit root when the data generation process is a long memory process presents, in general, higher power than the usual ADF and sieve bootstrap unit root tests.
Solution of the ECE Vacuum Equations

The vacuum of Einstein Cartan Evans (ECE) theory is a curved and twisted space-time lled by electromagnetic potentials. The vacuum potential can be computed by the condition that electromagnetic force elds vanish. In classical electrodynamics, this condition is not su cient to compute a distribution of potential from given boundary conditions. ECE theory has a richer structure with spin connections of Cartan geometry and additional constraints due to the antisymmetry of the connections in general relativity. Expressions for describing the energy and momentum density are given. It can be shown for the rst time that the high vacuum potentials known from quantum e ects are consequences of the structure of space-time itself.
Shocked by Therapy? Unemployment in the First Years of the Socio‐Economic Transition in Poland and its Long‐Term Consequences

We examine long-term implications of unemployment for material conditions and well-being using the Polish sample from the Survey of Health, Ageing and Retirement in Europe (SHARE). Retrospective data from the SHARELIFE survey are used to reconstruct labour market experiences across the threshold of the socio-economic transformation from a centrally planned to a free market economy in Poland. These individual experiences are matched with outcomes observed in the survey about 20 years later to examine their correlation with unemployment at the time of the transition. We find that becoming unemployed in the early 1990s correlates significantly with income, assets and a number of measures of well-being recorded in 2007 and 2012. Using plant closures to reflect exogenous changes to labour market status at the time of the transition, we are able to confirm the causal effect of unemployment on income and house ownership 20 years later, but find no evidence for a long-term causal relationship between unemployment and such measures of well-being as life satisfaction, depression and subjective assessment of material conditions.
Cognitive Behavior Group Therapy in Mathematics Anxiety

The present study investigated whether the CBGT has any impact on mathematics anxiety of high school students. The sample consisted of 16 subjects in the experimental group and 17 subjects in the control group who had high level of Mathematics anxiety on Mathematics anxiety rating scale (MARS). After the pre test of two groups, the intervention by CBGT was given to the experimental group in (15 sessions) for 1.5 hours – two time in a week and at the end of intervention, again the Mathematics anxiety evaluated. Analyses of data of pre and post test by repeated measures ANOVA has shown that CBGT was highly effective in reducing Mathematics anxiety and two subscales of this scale ( test anxiety and numerical anxiety). More over with respect to gender, there is a significant difference between boys and girls in mathematics anxiety in post test of experimental group.
Methylenetetrahydrofolate Reductase C677T Gene Polymorphism and Homocysteine Levels are Risk Factors for Myocardial Infarction.

Increased plasma total homocysteine (tHcy) levels shown to be a risk factor for coronary artery disease (CAD). The common methylenetetrahydrofolate reductase C677T (MTHFR C677T) polymorphism has been reported to be a strong predictor of mild hyperhomocysteinaemia (HHcy). We assessed whether this mutation was associated with increased risk of myocardial infarction (MI) and plasma levels of tHcy. The study group consisted of 210 angiographically proven MI patients, and 202 age and sex matched healthy individuals as controls. MTHFR (C677T) gene polymorphism was detected based on the polymerase chain reaction and restriction digestion with HinfI. Total homocysteine plasma concentration was measured using immunoassay. T allele frequency was not found to be significantly higher in patients than in the control group: T vs. C was χ2=0.19, OR 1.0, CI 95% 0.8–1.4, p=0.6; and TT vs. CC was χ2=0.24, OR 1.2, CI 95% 0.6–2.3, p=0.6. We found significantly elevated levels of mean homocysteine in the patient group when compared to the control group (p =0.00). Our findings showed that MTHFR C677T polymorphism is not a risk factor for myocardial infarction in South Indian population and higher levels of homocysteine in patients indicated that the severity of the disease is independent of homocystein levels.
Teaching english applying emotional intelligence

The following classroom project intends to demonstrate the usefulness to apply Emotional Intelligence into English classes with the only aim of impact students in their academic and personal development. First, we worked on the concepts that are necessary for the understanding of the project. Second, we compare and contrast two research projects in which emotional intelligence was applied and tested in business and pedagogical contexts showing different results that were analyzed by experts. Third, the methodology shows the way in which the project was conducted, exposing the steps and procedures that were followed and the material that was used during the process. Finally, the results obtained from this project are described and exposed in order to demonstrate the effectiveness and weaknesses that the implementation of emotional intelligence has in English lessons.
Frequency of Equine Monocytic Ehrlichiosis ( EME ) in Brazil 1

Moreira L.M. C. , Cardoso K.M. , Aboud-Dutra A.E. , Ferrão C.M. & Gazêta G.S. 2013. Frequency of Equine Monocytic Ehrlichiosis (EME) in Brazil. Pesquisa Veterinária Brasileira 33(6):697-699. Laboratório Referência Nacional em Vetores das Riquetsioses, Instituto Oswaldo Cruz, Avenida Brasil 4365, Rio de Janeiro, RJ 21040360, Brazil. E-mail: leonardo.moerbeck@ioc.fiocruz. br From a cross-sectional observational study with convenience samples, 347 blood samples from horses were collected from different physiographic regions, as follows: Santa Catarina Plateau (Santa Catarina State SC), Médio Paraíba do Sul (São Paulo State SP and Rio de Janeiro State RJ), Mountainous and Metropolitan regions (Rio de Janeiro State RJ). Samples were tested for the presence of antibodies (IgG) anti Neorickettsia risticii by indirect immunofluorescence assay (IFA). The frequency obtained in this study corroborates with the ones obtained in the U.S.A. , which refers to endemic regions. Fisher’s exact test showed significant differences in the number of positive animals between regions, indicating that the probability of an animal becoming infected varies depending on the area. The CI 95% revealed no association between infection and geopolitical space. Moreover, Odds ratio test showed differences of an animal getting infected in different regions. This event could be influenced by the type of treatment used in each area, as the seasonal frequency of injury or even potential vectors. Therefore, there are seropositive animals for N. risticii in the studied areas, suggesting that this agent may be circulating in those regions. Future studies mainly based on molecular analyzes are needed to confirm these serological findings.
Cultivating a Community of Practice to Enable Coach Development in Alpine Ski Coaches

Given the enduring focus of coach education on the development of professional knowledge (e.g., technique, strategy, and tactics), the current study aimed to explore how a Community of Practice (CoP) impacted coach development of interpersonal and intrapersonal knowledge. Cote and Gilbert’s (2009) definition of coaching expertise was used as a model to observe learning in a community of practice (CoP; Wenger, McDermott & Snyder, 2002). A total of eight internationally qualified ski coaches (aged 27–44 years) took part in weekly meetings over a period of six weeks, with the lead researcher cultivating a CoP and ensuring coaching issues were the focus of discussion. Meetings were audio-recorded and the data transcribed and analysed thematically. Results revealed that coaches developed both interpersonal and intrapersonal knowledge through enhanced emotional intelligence, gaining an athlete-centred approach, storytelling, group reflection and changing role frames. The findings are positioned within the extan.
A SPECIES LEVEL ANALYSIS OF THE EFFECT OF HERBIVORES AND MAN ON THE SAND FOREST VEGETATION OF MAPUTALAND, NORTHERN KWAZULU- NATAL, SOUTH AFRICA

Sand Forest in the northern Maputaland region of KwaZulu-Natal in South Africa is deemed the most valuable, but also probably the most complex vegetation type of this part of the Maputaland – Pondoland – Albany hotspot of biodiversity. Its structure and dynamics have been provisionally described but the descriptions remain mostly speculative. The current human population growth in that region called for an indepth investigation of the forest structure and dynamics in order to evaluate the most successful conservation options available. It appears that Sand Forest is a complex assemblage of at least three tree communities defined by different canopy and subcanopy levels. It is dominated by fine-grained species with an ideal population structure (inverse J-shaped) and therefore can be considered a fine-grained forest. The three communities appear to define a gradient in grain and may represent successional stages of the Sand Forest sub-association as a whole. The forest regeneration appears dependent on the creation of small canopy gaps either by natural processes or elephants, while the creation of large gaps seems to lead to a successional change to woodland. Management of conservation areas where Sand Forest occurs should therefore concentrate efforts on regulating animal populations to levels that provide gap properties that favour forest regeneration.
P o S ( N I C X I ) 0 3 2 Compact binary mergers : an astrophysical perspective

This paper reviews the current understanding of double neutron star and neutron star black hole binaries. It addresses mainly (nuclear) astrophysics aspects of compact binary mergers and thus complements recent reviews that have emphasized the numerical relativity viewpoint. In particular, the paper discusses different channels to release neutron-rich matter into the host galaxy, connections between compact binary mergers and short Gamma-ray bursts and accompanying electromagnetic signals.
PREVALENCE , CLINICAL CHARACTERISTICS AND PROGNOSIS OF GATA 2-RELATED MYELODYSPLASTIC SYNDROMES ( MDS ) IN CHILDREN AND ADOLESCENTS

Marcin W. Wlodarski, Shinsuke Hirabayashi, Victor Pastor, Jan Starý, Henrik Hasle, Riccardo Masetti, Michael Dworzak, Markus Schmugge, Marry van den Heuvel-Eibrink, Marek Ussowicz, Barbara De Moerloose, Albert Catala, Owen P Smith, Petr Sedlacek, Arjan C. Lankester, Marco Zecca, Victoria Bordon, Susanne Matthes-Martin, Jonas Abrahamsson, Jörn Sven Kühl, Karl-Walter Sykora, Michael H. Albert, Bartlomiej Przychodzien, Jaroslaw Maciejewski, Stephan Schwarz, Gudrun Göhring, Brigitte Schlegelberger, Annámaria Cseh, Peter Noellke, Ayami Yoshimi, Franco Locatelli, Irith Baumann, Brigitte Strahm, and Charlotte M. Niemeyer. For the European Working Group of MDS in Childhood (EWOG-MDS).
Preconditioning of the spectral Fourier method for homogenization of periodic media

Homogenization problems represent one important part of large scale modeling. Reducing the data describing material properties via one or a few constants may reduce memory and computational demands of the computational process of many real life problems. We consider the elliptic partial differential equation with a oscillating anizotropic material data. Using the classical homogenization theory [1, 4], we aim to find the effective related parameter. For numerical solution, instead of finite element basis, we use Fourier spectral basis. The resulting matrix-vector form of the problem is described. It was already shown that this system of equations can be solved using the conjugate gradient method [10]. In this paper, we introduce a certain class of preconditioning of this problem. Our approach is based on exact incorporating of one or more frequencies of the data into the preconditioner in such manner that the preconditioning matrix remains easy to invert.