Miracle-dz/UniFAR-FTUs huggingface dataset:
Comportamento de risco para bulimia nervosa, hábitos alimentares e de higiene bucal como fatores associados ao desgaste dentário erosivo e cárie dentária em adolescentes

Os disturbios alimentares possuem uma etiologia multifatorial, composta de predisposicoes socioculturais, geneticas e vulnerabilidades biologicas e psicologicas. Entre os fatores predisponentes, destacam-se os padroes de interacao presentes no ambiente familiar e o contexto sociocultural, caracterizado pela extrema valorizacao do corpo. A presenca de algumas condicoes bucais, como o desgaste dentario erosivo e a carie dentaria, pode estar relacionada a ocorrencia de disturbios alimentares, como a bulimia nervosa (BN). Pesquisas sobre fatores de risco favorecem a analise oportuna de possiveis sinais e sintomas e, consequentemente, o estabelecimento de condutas preventivas. Este trabalho objetivou comparar a ocorrencia do desgaste dentario erosivo e da carie dentaria em adolescentes com e sem comportamento de risco para BN, e investigar a influencia de habitos alimentares e de higiene bucal na ocorrencia de desgaste dentario erosivo e da carie dentaria. Aprovacao etica e termos de consentimento foram obtidos. A amostra foi composta por 225 escolares do sexo feminino, na faixa etaria de 15 a 18 anos, oriundas de escolas das redes publica e particular de ensino de Belo Horizonte, no sudeste do Brasil. O comportamento de risco para BN foi avaliado segundo as subescalas de sintomas e gravidade dos sintomas da versao brasileira do Teste de Investigacao Bulimica de Edinburgh (BITE) sendo categorizado em: habito alimentar normal, comportamento de risco clinicamente significante e grave comportamento de risco. Os habitos alimentares e de higiene bucal foram avaliados atraves de questionarios autoaplicaveis. O desgaste dentario erosivo e a carie dentaria foram avaliados atraves dos indices de OSullivan e ICDAS II, respectivamente, por uma examinadora previamente calibrada (Kappa intra-examinador: 0,90 e 0,81; Kappa inter-examinadores: 0,88 e 0,83, referentes a erosao e a carie dentaria). Os dados foram analisados de forma descritiva e inferencial, atraves do software SPSS 18.0 (p 0,05). Com relacao aos habitos alimentares, o desgaste dentario erosivo foi associado ao consumo diario de frutas citricas (p<0,009) e refrigerantes com acucar (p<0,046), enquanto a carie dentaria foi associada ao consumo diario de biscoitos recheados (p<0,049). O habito de escovar os dentes imediatamente apos as refeicoes foi estatisticamente associado a ocorrencia de desgaste dentario erosivo no grupo com grave comportamento de risco para BN (p=0,047). O comportamento de risco para BN, caracterizado como clinicamente significante, nao foi associado com implicacoes dentarias, mas o grave comportamento de risco para BN foi associado com a ocorrencia de desgaste dentario erosivo. Habitos alimentares e de higiene bucal foram associados a presenca de desgaste dentario erosivo e carie dentaria.
Estimating radar precipitation in cold climates: the role of air temperature within a non-parametric framework

Abstract. The use of ground-based precipitation measurements in radar precipitation estimation is well known in radar hydrology. However, the approach of using gauged precipitation and near-surface air temperature observations to improve radar precipitation estimates in cold climates is much less common. In cold climates, precipitation is in the form of snow, rain or a mixture of the two phases. Air temperature is intrinsic to the phase of the precipitation and could therefore be a possible covariate in the models used to ascertain radar precipitation estimates. In the present study, we investigate the use of air temperature within a non-parametric predictive framework to improve radar precipitation estimation for cold climates. A non-parametric predictive model is constructed with radar precipitation rate and air temperature as predictor variables and gauge precipitation as an observed response using a k nearest neighbour (k-nn) regression estimator. The relative importance of the two predictors is ascertained using an information theory-based weighting. Four years (2011–2015) of hourly radar precipitation rates from the Norwegian national radar network over the Oslo region, hourly gauged precipitation from 68 gauges and gridded observational air temperatures were used to formulate the predictive model, hence making our investigation possible. Gauged precipitation data were corrected for wind-induced under-catch before using them as true observed response. The predictive model with air temperature as an added covariate reduces root-mean-square error (RMSE) by up to 15 % compared to the model that uses radar precipitation rate as the sole predictor. More than 80 % of gauge locations in the study area showed improvement with the new method. Further, the associated impact of air temperature became insignificant at more than 85 % of gauge locations when the near-surface air temperature was warmer than 10 ∘C, which indicates that the partial dependence of precipitation on air temperature is most useful for colder temperatures.
The Negation Bias in Stereotype Maintenance: A Replication in Five Languages

Research on linguistic biases shows that stereotypic expectancies are implicitly reflected in language and thereby subtly communicated to message recipients. Research on the Negation Bias shows that the use of negations (e.g., not stupid vs. smart) is more pronounced in descriptions of stereotype-inconsistent compared with stereotype-consistent behaviors. This article reports a replication study of the original research conducted in Dutch, using newly developed materials, and in five different languages: English, Dutch, Hungarian, Finnish, and Serbian. The results validate the existence of the Negation Bias in all five languages. This suggests that negation use serves a similar stereotype-maintaining function across language families.
A Novel Method of Adaptive Kalman Filter for Heading Estimation Based on an Autoregressive Model

With the popularity of smartphones and the development of microelectromechanical system (MEMS), the pedestrian dead reckoning (PDR) algorithm based on the built-in sensors of a smartphone has attracted much research. Heading estimation is the key to obtaining reliable position information. Hence, an adaptive Kalman filter (AKF) based on an autoregressive model (AR) is proposed to improve the accuracy of heading for pedestrian dead reckoning in a complex indoor environment. Our approach uses an autoregressive model to build a Kalman filter (KF), and the heading is calculated by the gyroscope, obtained by the magnetometer, and stored by previous estimates, then are fused to determine the measurement heading. An AKF based on the innovation sequence is used to adaptively adjust the state variance matrix to enhance the accuracy of the heading estimation. In order to suppress the drift of the gyroscope, the heading calculated by the AKF is used to correct the heading calculated by the outputs of the gyroscope if a quasi-static magnetic field is detected. Data were collected using two smartphones. These experiments showed that the average error of two-dimensional (2D) position estimation obtained by the proposed algorithm is reduced by 40.00% and 66.39%, and the root mean square (RMS) is improved by 43.87% and 66.79%, respectively, for these two smartphones.
Slot loading effect on impedance and radiation performance of high‐gain patch antenna under TM03‐mode operation

Based on antenna's impedance and radiation performance, the slot loading effect on the TM03‐mode high‐gain square patch antenna is investigated in this paper. Three different slot configurations are loaded to the patch along the central line, which can reduce the sidelobe in the E‐plane. However, it is found that the H‐plane beamwidth, impedance bandwidth and radiation Q factor become significantly different in these cases. At first, broader H‐plane beamwidth, lower Q factor and wider impedance bandwidth can be obtained when only single slot is loaded in the center of the patch. In contrast, when two open slots are etched at two nonradiative edges of the patch, it will result in narrower H‐plane beamwidth, higher Q factor and narrower impedance bandwidth. Moreover, better balanced performance can be achieved by simultaneously loading the central and sided slots. For validation, three kinds of antenna prototypes are designed, fabricated, and measured. The measured and simulated results agree well with each other, which demonstrate that different impedance and radiation performance can be freely adjusted and achieved by using different slot configurations.
About the helix plasma antenna: effective factors on characteristics of radiation

ABSTRACT In this paper, a plasma waveguide including a dielectric cover surrounded by metallic helical sheath is investigated as a helix plasma antenna. By solving the wave equation, the components of electric and magnetic fields of hybrid modes for each region is calculated. The collisional approximation for background plasma is used at first and in the second stage a magnetized plasma will be considered as the electromagnetic media in the helical sheath. Applying suitable boundary conditions, the dispersion relation of slow waves in terahertz frequency region is investigated for two configurations mentioned above. Effect of several parameters such as the helix angle, the geometry dimensions, the dielectric constant of dielectric layer, the cyclotron frequency and the plasma frequency on the population of dispersion branches of lower hybrid modes, is investigated. Also, the graphs of normalized radiation power in plasma region to the radiation power in vacuum region are presented.
Theorizing literacy from the ground up in French immersion: challenging contemporary perspectives through cross-disciplinary connections

Contemporary literacy pedagogy is rife with theories and practices that attempt to foster development for all children. The plethora of options available to classroom teachers can feel convoluted and difficult to navigate even though they all have roots in one of three paradigmatic orientations towards language and literacy pedagogy: skills orientation, meaning orientation, and balanced orientation. The current paradigm is nevertheless becoming insufficient in responding to the needs of increasingly diverse classrooms. This is especially true within French Immersion education which is commonly marginalized as elitist, teacher-centric, conservative, and exclusive. This study engages in an autobiographical narrative inquiry of the researcher’s 10 year career as an Early Years (K–4) French Immersion teacher. Specific events throughout the autobiographical narrative that challenged the researcher’s sense of identity as a French Immersion educator or his theorizing of language and literacy development were labelled as “Critical Moments” and were explored through themes of tension, key questions, and resolution. Primary source texts that played a role in those “Critical Moments” were critically analyzed and connected in an ongoing theorizing of language and literacy that ran in parallel with an ongoing critical reframing of the researcher’s identity as a French Immersion teacher. This study demonstrates that a cross-disciplinary perspective of language and literacy allows for pedagogical approaches that are not constrained by skills, meaning, and balance orientations. It also serves as an example of teacher identity construction within French Immersion teaching contexts and raises important questions about, and suggests future directions for, French Immersion education.
A numerical study of the bistability of a mathematical model of leech oscillator interneurons: the transient current pulse condition for inducing the switch from a periodic spiking state to a chaotic spiking state

This article reports the results of a numerical simulation of the bistability of a mathematical model of leech oscillator interneurons that is described by a system of nonlinear ordinary differential equations. The study examines the bistability of a periodic spiking state and a chaotic spiking state that was reported previously under certain parameter conditions of this model, and it conducts a numerical simulation to clarify the transient current pulse condition for inducing the switch from a periodic spiking state to a chaotic spiking state. The transient current pulse is injected at different phases of a periodic spiking oscillation. The results of numerical simulation suggest that a depolarizing current pulse can induce the switch. The maximum value (Iapp, max) and minimum value (Iapp, min) of the current pulse amplitude that induces the switch are revealed at each phase of a periodic spiking oscillation. In addition, the range of amplitude that can induce the switch (defined as Iapp, max Iapp, min + 1) is revealed at each phase of a periodic spiking oscillation. Correlations between Iapp, min and Iapp, max, between Iapp, min and Iapp, max Iapp, min + 1, and between Iapp, max and Iapp, max Iapp, min + 1 are revealed. 320 Takaaki Shirahata Mathematics Subject Classification: 37N25, 92C20 PACS: 05.45. -a, 87.19. ll
Optimal Petri-Net Controller for Avoiding Collisions in a Class of Automated Guided Vehicle Systems

Automated guided vehicles (AGVs) are being extensively used for transportation and distribution of materials due to their high-efficiency. However, the vehicle-collision free problem is challenging since, when modeling these systems, there are indistinguishable and uncontrollable events due to the limited sensors and actuators. This paper proposes an approach to the design of a maximally permissive (optimal) controller to prevent vehicles from any collision based on Petri nets (PNs). For a typical class of AGV systems, a system modeling algorithm is presented using labeled PN, where indistinguishable events are represented by a set of transitions carrying the same label, and an uncontrollable event by an uncontrollable transition. By virtue of the PN model, the collision-free problem is formalized as a conjunction of linear constraints that are converted into admissible ones by an algorithm such that the computational overhead due to uncontrollable events is significantly reduced. In turn, a method is developed to compute the set of consistent markings for an observed sequence of labels that represent signals generated by sensors. Finally, given an observed sequence, a maximally permissive control action is computed to enforce a conjunction of admissible linear constraints based on the set of consistent markings. The approach well addresses the challenging issues caused by indistinguishable and uncontrollable events. A typical AGV system is utilized to illustrate and verify the theoretical results throughout the work.
Radiative Effect of Mineral Dust on East Asian Summer Monsoon During the Last Glacial Maximum: Role of Snow‐Albedo Feedback

Mineral dust exerts great influence on modern climate. Eolian deposits reveal that atmospheric dust concentration is larger during the Last Glacial Maximum, especially over Asia. However, the larger forcing of dust on Asian climate is still not fully explored. In this study, climate model experiments are conducted to evaluate the direct radiative effect on East Asian monsoon. The results show that the radiative forcing of dust, amplified by snow albedo feedback over high‐latitude Eurasia, produces a wave‐like pattern in westerlies and weakens the monsoon southerly winds over northern China. Dust over expanded Last Glacial Maximum sources (northern Central Asia and northeastern Russia) is responsible for this perturbation of the westerlies; the absence of these dust sources at present explains why such impacts on circulations are not simulated for modern conditions. The dust‐induced anomalies in southerly wind speed and precipitation over northern China reach 29% and 41% of the glacial‐induced changes, respectively.
Bibliometric Analysis of Ethical Leadership Research in Social Sciences

This study aims to retrieve and analyze the publications on ethical leadership in social sciences. SSCI database of WoS was searched between 1987-2017 for this purpose through bibliometric analysis approach. VOS Viewer software was used to analyze and visualize various features of publications; thereby, co-occurrences of author keywords, bibliographic coupling of the journals, bibliographic coupling of the countries, bibliographic coupling of the authors, bibliographic coupling of the publications, and bibliographic coupling of the institutions were analyzed. The most important country in this field was the USA, the second and the third ones were China and the Netherlands. The most important author in this field was Trevino, L.K. and the most important research team was Trevino, L.K. and Brown, M. The most important publication in this field, Brown & Trevino (2006), was authored by this team. The most important institution was Penn State University in the USA, having been employed the most important research team therein. The strongest journal in this field was Journal of Business Ethics and the second one was Leadership Quarterly. The most studied concepts in their relations with ethical leadership were; transformational leadership, performance, organizational citizenship behavior, perceptions of followers, ethics, decision-making, authentic leadership, leader-member exchange, values, job satisfaction, business ethics, trust, personality, commitment, and charismatic leadership.
Student-driven learning in integrated lecture-lab classroom environments: the role of mobile computing

This paper presents a critical overview of our experiences in using mobile computing for supporting both faculty and students in integrated lecture±lab classroom environments. Three case studies describe how handhelds, laptop carts, tablet PCs, and student-owned laptops/tablets can enable adaptive, active, applied learning. We identify the remaining challenges to be overcome before the potential of mobile computing can be fully realized. Some of those challenges are specific to mobile computing; however, many others are broader problems in engineering education, such as the need for involvement beyond the primary instructors (e.g., technical staff) and modern classroom facilities.
Avaliação longitudinal de parâmetros clínicos, hematológicos, bioquímicos e eletroforese de proteínas de cães com sarna demodécica tratados com Amitraz

A sarna demodecica canina (SDC) e uma enfermidade cutânea, de carater inflamatorio, difundida por todo o mundo. Esta relacionada a proliferacao de acaros do genero Demodex, adquiridos durante asprimeiras semanas de vida por contato direto dos filhotes com a mae. Seu diagnostico e realizado atraves de exames parasitologicos a partir de raspados cutâneos profundos que, apesar de sua alta sensibilidade, e uma tecnica que provoca lesoes na pele, gerando dor e estresse nos animais, o que pode ser desagradavel aos proprietarios. Foram comparados o teste de avulsao de pelos e o teste de aderencia a fita adesiva, que apresentaram mesma sensibilidade entre si na realizacao do diagnostico, sensibilidade esta, inferior ao raspado cutâneo. O amitraz constitui o acaricida de escolha para o tratamento da SDC devido a sua seguridade e eficacia como parasiticida. No entanto, avaliacoes de seus efeitos hematologicos e bioquimicos somente foram realizadas ao final do tratamento ou a partir de testes de toxicidade por aplicacao enteral ou parenteral. Foi realizado estudo longitudinal de animais tratados com amitraz por via topica sem contudo a observacao de efeitos colaterais. O prognostico da SDC localizada e bom. Mas, nos casos generalizados, apesar de todas as pesquisas que buscam tratamentos mais efetivos, o prognostico ainda e reservado e dependente dos fatores predisponentes envolvidos em cada caso.
Statistical Sparse Channel Modelling for Measured and Simulated Wireless Temporal Channels

—Time-domain wireless channels are generally modelled by Tapped Delay Line (TDL) model and its variants. These models are not effective for channel representation and estimation when the number of multipath taps is large. Compressive sensing (CS) provides a powerful tool for sparse channel modelling and estimation. Most of research has been focusing on sparse channel estimation, while sparse channel modelling (SCM) is rarely considered for centimeter-wave channels. In this paper, we investigate statistical sparse channel modelling, using both measured and simulated channels over a frequency range of 6 to 8.5 GHz, . We ﬁrst introduce the triple equilibrium principle to explore the trade-off between sparsity, modelling accuracy, and algorithm complexity in SCM, and provide a methodology for characterizing the sparsity of time-domain channels using single-measurement-vector compressive sensing algorithms. Mainly using mainly the selected wavelet dictionary and various CS reconstruction (aka recovery) algorithms, we then present comprehensive statistical sparse channel models, including channel sparsity, magnitude decaying proﬁle, sparse co-efﬁcient distribution and atomic index distribution. Connections between the parameters of sparse and conventional TDL channel models are mathematically established. We also propose three methods for generating simulated channels from the developed sparse channel models, which validates their effectiveness.
The role of the Atlantic Multidecadal Oscillation precondition in the teleconnection of different El Niño‐Southern Oscillation types and impacts on the 15°N–15°S South American sector precipitation

The Eastern Pacific (EP) and Central Pacific (CP) El Niño‐Southern Oscillation (ENSO) types and their impacts on the tropical North Atlantic (TNA) SST variability and 15°N–15°S South American precipitation during the warm and cold phases of the Atlantic Multidecadal Oscillation (WAMO and CAMO) were evaluated during the 1901–2012 period. The results show more frequent ENSO events during the CAMO. The El Niño (EN) (La Niña [LN]) events, regardless of type (EP or CP), during the WAMO (CAMO) were accompanied by a warming (cooling) in the TNA after its mature phases. In these cases, extratropical teleconnection patterns are established through variations in the Pacific/North America (PNA) teleconnection pattern and are accompanied by variations in the Walker circulation. For the EN (LN) in the CAMO (WAMO), the tropical teleconnections occur predominant, through the Walker cell and the zonal inter‐basin gradient, which is intensified due to the SST gradient between the eastern equatorial Pacific (non‐neutral anomalies) and the equatorial Atlantic (neutral anomalies). These circulation pattern changes affect the precipitation patterns in the 15°N–15°S South American sector during December–January–February (D(0)JF(+1)) and March–April–May (MAM(+1)). The EP EN (EPEN) events are associated with the intensification of the negative precipitation anomalies in northeastern Brazil (NEB) during the WAMO and in the central part of the Amazon during the CAMO. In the case of CP EN (CPEN) events, the greatest differences between the AMO phases occur during MAM(+1), with reverse sign anomalies over northwestern South America. In the case of LN events, the largest differences occur in NEB, with reduced rainfall in the WAMO, regardless of type EP or CP. The results presented here highlight the role of low frequency oscillations in defining the teleconnection patterns between tropical Pacific and Atlantic Oceans, not discussed previously.