Miracle-dz/UniFAR-FTUs huggingface dataset:
Star–Disk Interactions in Multiband Photometric Monitoring of the Classical T Tauri Star GI Tau

The variability of young stellar objects is mostly driven by star–disk interactions. In long-term photometric monitoring of the accreting T Tauri star GI Tau, we detect extinction events with typical depths of mag that last for days to months and often appear to occur stochastically. In 2014–2015, extinctions that repeated with a quasi-period of 21 days over several months are the first empirical evidence of slow warps predicted by magnetohydrodynamic simulations to form at a few stellar radii away from the central star. The reddening is consistent with and, along with an absence of diffuse interstellar bands, indicates that some dust processing has occurred in the disk. The 2015–2016 multiband light curve includes variations in spot coverage, extinction, and accretion, each of which results in different traces in color–magnitude diagrams. This light curve is initially dominated by a month-long extinction event and a return to the unocculted brightness. The subsequent light curve then features spot modulation with a 7.03 day period, punctuated by brief, randomly spaced extinction events. The accretion rate measured from U-band photometry ranges from to M⊙ yr−1 (excluding the highest and lowest 5% of high- and low- accretion rate outliers), with an average of M⊙ yr−1. A total of 50% of the mass is accreted during bursts of M⊙ yr , which indicates limitations on analyses of disk evolution using single-epoch accretion rates.
Developing student character of preservice mathematics teachers through blended learning

This study aims to develop communicative, creative, curiosity, and hard work to students through learning mathematics using blended learning method. The method in this research is qualitative research with analytical descriptive study approach. The subject of this research is a level 3 student of preservice mathematics teachers in one of private universities in Bandung. The instrument used in this research is the observation sheet of student character in each learning activity. Based on the research, it can be concluded that learning with effective blended learning method can develop communicative character, creative, curiosity, and hard work. Overall, it can be concluded that learning using blended learning method can develop the character of the students of preservice mathematics teachers.
Emotion Regulation Difficulties as a Moderator of the Relationship between Perfectionism and Depression in College Students

The present study aimed to better define the effect of emotion regulation on the relationship between perfectionism (standards) and depression. It was hypothesized that perfectionism predicts depression, and high emotion regulation difficulties would strengthen the relationship. 330 students from the Oakland University Psychology subject pool participated in a variety of questionnaires including those assessing perfectionism, emotion regulation, and depression. Results indicated a significant two-way interaction where those with low difficulties in emotion regulation experienced no difference in symptoms of depression across perfectionism but those with high difficulties in emotion regulation reported higher symptoms of depression for low perfectionism (standards) compared to high. The hypotheses were not supported, but research was extended as the study identifies emotion regulation as a moderator in the relationship between perfectionism and depression, such that improvements in emotion regulation may buffer against perfectionism standards.
Biology in Context: Social and Cultural Perspectives on ADHD. Research Review.

Dans cet article, l'A se penche sur la validite de l'ADHD, desordre de l'hyperactivite, deficit de l'attention. L'A revient sur la definition de ce syndome infantile et explique ici l'importance des facteurs socio-culturels et biomedicaux dans la recherche et le traitement medicamenteux de cette maladie aus Etats-Unis et en Grande Bretagne
Direct measurement of the vortex migration caused by traveling magnetic wave

We studied the magnetisation of a 2 in. diameter YBCO thin film in the presence of traveling magnetic waves with six hall sensors. Simulation based on finite element method was conducted to reproduce the process of magnetisation. We discovered that the magnetisation of YBCO thin film based on traveling waves does not follow the constant current density assumption as used in the standing wave condition. We have shown that the traveling wave is more efficient in transporting the flux into the YBCO thin film, which suggests the potential of a flux injection device for high temperature superconducting coils.
Study of multi-drug resistant microorganisms isolated from blood cultures of hospitalized newborns in Rio de Janeiro city, Brazil

The aims of this study were to determine the frequency and antimicrobial resistance patterns of microorganisms associated with sepsis cases in a public maternity hospital, and to analyze the main demographic data relating to these infected neonates over a two year period. We analyzed 255 positive blood cultures and the medical records of newborns admitted to the neonatal intensive care unit of the Hospital Maternidade Alexander Fleming II, Rio de Janeiro city, Brazil, from July 1997 to July 1999. Identification and antibiograms of the isolated strains were performed according to routine laboratory procedures. Demographics and microbiological data were analyzed using the Epi-Info program. The mean age of the newborns was 13.1 days, with an average of 1.2 strains isolated per patient. Antibiotics were administered to 207 (83.1%) patients before positive blood culture presentation. A total of 90.8% patients were premature; 83.9% had a gestational age of less than 36 weeks; 52.6% presented very low birth weight; 39.8% had asphyxia and 33.3% presented hyaline membrane disease. A total of 301 microorganisms were isolated with a predominance of Klebsiella pneumoniae (22.9%), coagulase-negative Staphylococci (17.3%), Serratia marcescens (15.9%) and Pseudomonas aeruginosa (10.6%). Gram-negative strains showed high resistance levels to cephalosporins and aminoglycosides. A total of 93.3% Staphylococcus aureus strains were methicillin-resistant. The newborns examined in this study presented several risk factors for acquiring hospital infection and the isolated microorganisms showed high levels of resistance to the majority of the antibiotics routinely used in the hospital.
New determinants and the Cayley-Hamilton Theorem for matrices over Lie nilpotent rings

We construct the so-called right adjoint sequence of an n × n matrix over an arbitrary ring. For an integer m ≥ 1 the right m -adjoint and the right m -determinant of a matrix is deﬁned by the use of this sequence. Over m -Lie nilpotent rings a considerable part of the classical determinant theory, including the Cayley-Hamilton theorem, can be reformulated for our right adjoints and determinants. The new theory is then applied to derive the PI of algebraicity for matrices over the Grassmann algebra.
Measuring public-health outcomes of release of transgenic mosquitoes

The transgenic RIDL method could ensure that male mosquitos can be released without biting females and that the males would have no female progeny after mating to wild females. Urban Anopheles or Aedes vector populations, surrounded by different species in rural areas, would seem to be the most appropriate targets for such releases, aiming at eradication. In urban areas intensity of transmission is generally not very high and the public-health outcomes of such urban programmes could be monitored by passive surveillance through health facilities or by active surveillance for infections with or without associated symptoms. The alternative use of transgenic mosquitos would be to produce strains refractory to infection by pathogens such as Plasmodium and to drive such genes into wild populations. In theory, in contrast to sterile-male eradication, such a procedure could "resist" a limited level of immigration and could open up the possibility of using the method against African rural malaria. However, in practice it would seem extremely difficult or impossible to ensure the necessary complete linkage of the refractoriness genes to the driving system. If this problem could be overcome one could monitor the impact of the spreading of the refractoriness genes by its impact on (i) the sporozoite rate in the wild population; (ii) the incidence of re-infection after clearing existing infections with an appropriate drug treatment; (iii) active surveillance for prevalence of malaria fever and anaemia in children; (iv) attacks of severe malaria and deaths monitored though hospitals and village reporters
Perceived Job Aspects and Outcomes Related to Eustress in the Working Population

In the last decades, the negative response to stress, so-called distress, became a well-known topic in clinical research, but less often deliberated is the positive response to stress, named eustress. As positive psychology focuses on enhancing positive work qualities, eustress and related job aspects are of special interest. While theory and quantitative research already suggested promising effects on health and well-being, the subjective experience of eustress is relatively unexplored. Therefore, the validation of theoretical knowledge and a more complex understanding of the phenomena of eustress, its emergence and outcomes perceived by employees is needed. Grounded in the Job-Demands-Resources Model, this study intended gaining more insight in job demands and job resources employees perceive in relation to eustress as well as perceived outcomes. A qualitative exploratory research with diverse employees in the form of interviews was conducted, which were inductively and deductively analyzed, combing a conventional and directed content analysis. Results yielded job resources as appreciation of client, accomplishment and having influence or responsibility and job demands as a high workload and a rigorous planning associated with eustress. Job resources seemed to be more often related to eustress and its positive outcomes than job demands. Employees associated eustress with positive emotional, mental, physical and behavioral outcomes, which are expected to have positive long-term effects on health and well-being and probably functioning as indicators to measure eustress. These findings provide a good starting point for further research and practical interventions to improve job qualities, but also developing an instrument making eustress measurable. Keywords: eustress; work stress; outcomes and effects
Structure and sustainability :An analysis of the organisation of educational technology leadership and support at Australian universities

The paper presents an analysis, with reference to sustainability, of the way in which educational technology leadership and support are structured, or organised, at the 39 Australian universities. This analysis is contextualised and anchored within literature relating to the structures and organisation of educational technology and universities. The analysis covers single mode universities focusing on on-campus or distance delivery as well as dual mode universities and deals with organisational positioning of educational technology leadership and support; standing of educational technology leadership and support; staffing type and nature of support; focus of educational technology leadership and support. Sustainability of educational technology leadership and support at universities requires, and needs to be balanced with, effective organisation and structure. The structure needs to be responsive to both internal and external developments.
HOW DO U.S. AND U.K. SALESPEOPLE COMPARE ON THE DIMENSIONS OF EMOTIONAL INTELLIGENCE, POSITIVE AND NEGATIVE AFFECT, AND CUSTOMER ORIENTATION LEVELS?

Identification of the variables that affect the performance of sales professionals has been an endeavor that has lasted for decades. Specification of individual variables that not only influence performance, but are amenable to both measurement and change has proven to be elusive. The purpose of this research is to assess two aspects of individual behavior which are measurable and may have profound impacts on training and development programs and selection considerations. The constructs of emotional intelligence and dispositional affect were hypothesized as being positively related to sales force performance. This study provides the empirical results of analyses designed to evaluate whether salesperson performance is significantly and positively related to the salesperson’s level of emotional intelligence and his/her dispositional affect. Based on these findings, implications, conclusions and suggestions for future research are provided.
Identifying native and exotic predators of ground-nesting songbirds in subantartic forests in southern Chile

Las aves Passeriformes constituyen el grupo mas diverso y abundante de vertebrados en el archipielago austral de Sudamerica. Sin embargo, se desconocen varios aspectos claves de su ecologia, tales como el exito de nidificacion y sus depredadores. El vison americano ( Neovison vison ) fue introducido a Tierra del Fuego en la decada de 1940 e invadio la Reserva de la Biosfera Cabo de Hornos, al sur del Canal Beagle en 2001. Como nuevo depredador tope, el vison invasor puede tener impactos significativos sobre las especies de aves nativas, incluyendo algunos Passeriformes del bosque que nidifican al nivel del suelo. Para determinar la identidad y el efecto de los depredadores de nidos en el suelo, condujimos un experimento con nidos artificiales y determinamos el impacto de los depredadores en las tasas de supervivencia diarias de nidos en tres tipos de habitats diferentes (matorrales antropogenicos, pastizales de castoreras y bosques). El 65% de los nidos fueron depredados (40% debido al chercan nativo [ Troglodytes musculus ] y 25% debido al vison exotico). Sin embargo, se encontro que el vison fue la causa del 53% del fracaso de los nidos en el matorral antropogenico. Estos resultados demuestran que tanto los depredadores nativos como los exoticos afectan el exito de nidificacion de la avifauna del bosque subantartico, pero el efecto de un depredador tope invasor, como el vison, constituye una nueva amenaza que podria afectar el exito de nidificacion y la sobrevivencia de los adultos.
Evaluating the capabilities of the CASI hyperspectral imaging system and Aquarius bathymetric LiDAR for measuring channel morphology in two distinct river environments

Remote sensing is a powerful tool for examining river morphology. This study used detailed field surveys to assess the capability of the CASI hyperspectral imaging system and Aquarius bathymetric LiDAR to measure bed elevations in rivers with disparate optical characteristics. Field measurements of water column optical properties in the clear Snake River, the more complex Blue and Colorado, and highly turbid Muddy Creek were used to calculate depth retrieval precision and dynamic range. Differences in depth of a few centimeters were detectable via passive optical techniques in the clearest stream, but precision was greatly reduced under turbid conditions. The bathymetric LiDAR evaluated in this study could not detect shallow depths or differences in depth smaller than 11 cm owing to the difficulty of distinguishing water surface and bottom returns in laser waveforms. In clear water and with high radiometric resolution, hyperspectral systems such as CASI could detect depths approaching 10 m, but semi‐empirical analysis of the Aquarius LiDAR indicated that maximum detectable depths were of the order of 2–3 m in the clear‐flowing Snake River, and closer to 1 m in the more turbid streams. Turbidity also constrained spectrally based depth retrieval, and depth estimates from the Blue/Colorado were far less reliable than on the Snake. Both sensors yielded positively biased (0.03 m for CASI, 0.08 m for Aquarius) bed elevations on the Snake, with precisions of 0.16–0.17 m. For the Blue/Colorado, mean errors were of the order of 0.2 m, biased shallow for optical data and biased deep for LiDAR, although no Aquarius laser returns were recorded from the deepest parts of these channels; precisions were reduced to 0.29–0.32 m. Both approaches have advantages and limitations, and prospective users must understand the capabilities and constraints associated with various types of remote sensing to ensure efficient use of these evolving technologies. Copyright © 2015 John Wiley & Sons, Ltd.
Automated Recognition of Sleep Arousal Using Multimodal and Personalized Deep Ensembles of Neural Networks

Background and Aim: Monitoring physiological signals during sleep can have substantial impact on detecting temporary intrusion of wakefulness, referred to as sleep arousals. To overcome the problems associated with the cubersome visual inspection of these events by experts, sleep arousal recognition algorithms have been proposed. Method: As part of the Physionet/Computing in Cardiology Challenge 2018, this study proposes a deep ensemble neural network architecture for automatic arousal recognition from multi-modal sensor signals. Separate branches of the neural network extract features from electro-encephalography, electrooculography, electromyogram, breathing patterns and oxygen saturation level; and a final fully-connected neural network combines features computed from the signal sources to estimate the probability of arousal in each region of interest. We investigate the use of shared-parameter Siamese architectures for effective feature calibration. Namely, at each forward and backward pass through the network we concatenate to the input a user-specific template signal that is processed by an identical copy of the network. Result: The proposed architecture obtains an AUPR score of 0.40 on the test set of the official phase of Physionet/CbiC Challenge 2018. A score of 0.45 is obtained by means of 10 -fold cross-validation on the training set.
A Markov Switching Model of the Merit Order to Compare British and German Price Formation

The objective of this paper is to develop a model to determine the price formation of wholesale electricity markets. For that purpose, we model wholesale electricity prices depending on the prices of fuels (coal and natural gas) and of CO2 emission allowances using a Markov Switching Regression. We apply the model to wholesale electricity prices in the UK and in Germany. While British electricity prices are quite well explained by short-run cost factors, we find a decoupling between electricity prices and fuel costs in Germany. This may be evidence that the German electricity generation sector does not work competitively.
Baileychlore, the Zn end member of the trioctahedral chlorite series

Baileychlore occurs as dark green rims on colloform calcite veins within a strongly oxidized collapse karst-breccia containing altered andesite and garnet-vesuvianite skarn clasts at the Red Dome deposit near Chillagoe, Queensland, Australia. Baileychlore is a new Zn-rich chlorite. The ZnO contents are fairly uniform from 28.2 to 30.5 wt% at a depth of 89.6 m in the deposit, with a structural formula of (Zn2.soFei1oAIl.17Mgo.76Mnij.b.Do.36)(Si3.ssAlo.4s)OlO(OH)g for the most Zn-rich analysis. The name is for Professor Sturges W. Bailey of the University of Wisconsin and is to be used for any trioctahedral chlorite in which Zn is the dominant divalent octahedral cation. Baileychlore occurs as fine-grained transverse fibers exhibiting zoned pleochroic colors (green to yellow-green) along their length. Refractive indices are ex= 1.582 and l' = 1.614. The measured and calculated densities are 3.18(2) and 3.195 g/cm3, respectively. Combined DTA-TGA curves show a major endotherm at 550°C, a small, double-bottomed endotherm in the range 680-750 °C, and an exotherm at 850°C. The X-ray powder pattern is that of the Ib ({3= 97°) polytype. The strongest lines (24 given) are [dobs(Iobs)(hkl)] 7.14(100)(002), 4.600(30)(02; 11), 3.573(40)(004), 2.660(50)(201,130), 2.450(35)(20j,132), and 1.542(60)(060,331). Unit-cell dimensions are a = 5.346(3), b = 9.257(4), c = 14.401(7) A, and (3 = 97.12(5)°. The symmetry is probably triclinic cI or CI because of semi-random stacking. A one-dimension electron-density projection and an asymmetry value of + 1.29 suggest a composition (Zn2.soAlo.14Do.36)o.s8~ for the octahedral sheet within the 2: 1 layer and (FeT.1oAIl.o3Mgo.76Mn6.bl)1.03+ for the interlayer sheet.
On the Stability of Incompressible MHD Modes in Magnetic Cylinder with Twisted Magnetic Field and Flow

In this work, we studied MHD modes in a magnetically twisted flux tube with a twisted flow that is embedded in the uniform magnetic field. We consider when the azimuthal magnetic field and velocity are linear functions of radius (case i) and also more generally when they are arbitrary functions of radius (case ii). Under these assumptions, we obtain the dispersion equation in the incompressible limit. This solution can also be used to describe the MHD perturbations in plasma pinches and vortices. The dispersion equation is simplified by implementing the thin flux tube approximation. It is shown that sausage modes (m = 0) become unstable for large enough azimuthal flow speeds. Also, we obtained the unstable modes for m > 0. It is shown that the stability criterion of the m = 1 mode (for case i) is independent of the background azimuthal components of the plasma velocity and magnetic field. These criteria fully coincide with the result that was previously obtained by Syrovatskiy for a plane interface. Moreover, this result even remains valid when the azimuthal magnetic field and velocity have an arbitrary dependence on radius (case ii). A criterion for the stability of the m ≥ 2 modes is also obtained. It was found that instability of these modes is determined by both longitudinal and azimuthal flows. It is shown that if there is sufficient azimuthal background flow, then all modes with m ≥ 2 will become unstable.
Verification of velocity‐resistivity relationships derived from structural joint inversion with borehole data

We present results of three‐dimensional joint inversion of seismic, magnetotelluric, and gravity data over a marine salt dome. Such structures are difficult to image with a single method, and our results demonstrate how combining different techniques can yield improved results. More importantly, we examine the reliability of velocity‐conductivity relationships derived from structure‐coupled joint inversion approaches. Comparison with a seismic reflection section shows that our models match the upper limit of the salt. Furthermore, velocity and resistivity logs from a borehole drilled into the salt dome's flank match, within error, those recovered by the inversion. The good match suggests that the difference in length scale does not have a significant effect in this case. This provides a strong incentive to incorporate borehole data into the joint inversion in the future and substantiates approaches that use the relationships derived from joint inversion models for lithological classification.