35 research outputs found

    Preventing school underachievement through ability grouping practices in schools: perspectives from programme local coordinators, teachers and social workers

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    Social inclusion of children and young people and the reduction of early school leaving (ESL) to less than 10% by 2020 is a central concern of the European educational policy, being seen as a way to prevent unemployment, poverty and social exclusion (EC, 2010). The processes that lead to ESL are complex and involve institutional as social, family and individual factors. After being identified as one of the European member-states with higher rates of ESL, Portugal, in the last decade, is clearly coming closer to the desired figures. As in other European countries, several programmes have been designed and developed in order to overcome the issue (Magalhães et al, 2015; RESL.EU, 2014). External assessment of one of those programs indicates a decreasing of ESL and retention rates in the schools involved. Notwithstanding, these results have been questioned on the grounds of the quality of the learning they provide (Dias, 2013; Antunes & Barros, 2014; Sá & Antunes, 2012). This paper is part of a research project founded by the Portuguese Foundation for Science and Technology, “EDUPLACES - Educating places: practices, voices and pathways of inclusive education”, focused on socio-educational inclusion practices. The project research questions are: which processes and factors, subjects, action rationales and (institutional, local, community) partnerships contribute to building local inclusive education practices, in the views of actors involved? which (social, institutional, biographical) processes and factors stop the negative spiral of school underachievement, school dropout and ESL and favour the youngsters’ remobilization to learn and build successful academic pathways? The research design consists of a multiple-case study of eleven observation units in four Portuguese countries, in the context of two national Programs targeted to overcome school underachievement and ESL and promote social inclusion. Based on a triangulation of sources and a set of criteria derived from literature review, a portfolio of eleven inclusive socio-educational practices was characterized. Analysis of the practices allowed a typology of inclusive practices: Ability Grouping; Study Support; Mediation and Pedagogical Differentiation. This presentation is centred in the ability grouping. There are many different definitions, nuances and empirical approaches of ability grouping (Loveless, 2013. Ability grouping, or homogeneous grouping, is defined as the separation of same-grade school children into groups or classes based on school aptitude. This separation may occur in all subjects or only in particular subjects (e.g. reading and mathematics) and grouping may occur based on test scores or school records of grades (Kulik, 1992). In the 1970s and 1980s, a barrage of studies criticized ability grouping, stressing issues like its impact on self-esteem, effectiveness of instruction and equity among minority groups (Braddock & Slavin, 1992). In the last years, we witness a resurgence of ability grouping and the term “differential instruction” is been used to define grouping students by prior achievement or skills level (Loveless, 2013). However, despite the extensive research on this topic, it’s hard to find clear cut conclusions about the advantages and disadvantages of ability grouping. As pointed out by Ireson & Hallam (1999:343), “Those favouring structured grouping tend to stress its effectiveness in terms of pupil achievement, whereas those against stress the inequity of the system and its social consequences.” In addition, the evidence suggests that “different grouping programs produce different effects” (Kulick, 1992:ix) and that “There appear to be complex interactions between grouping, teaching methods, teacher attitudes, the pacing of lessons and the ethos of the school” (Ireson & Hallam, 1999:343). In this presentation we share some results about the perspectives of program local coordinators, teachers and social work professionals about ability grouping practices.info:eu-repo/semantics/publishedVersio

    Online holistic program to foster health amongst students: a pilot study in a Portuguese university during COVID-19 pandemic

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    During the COVID-19 pandemic, several preventive mental health interventions took place to increase the psychological well-being of university students due to the high levels of stress, anxiety and negative emotions experienced in that period. This context reinforced the role of universities in supporting students and preventing the mental health risk factors they faced. In this context a multidisciplinary team of professionals (psychologists, nurses, nutritionists, and artists) in the Portuguese Catholic University, gathered efforts and developed an holistic intervention program for university students based on a mind and body integrated approach. This program of 8 online sessions aims to improve students’ resilience to the psychosocial consequences of COVID-19 pandemic and promote their wellbeing. The twenty university students that participated in this pilot study reported that this intervention improved their emotional self-awareness, their ability to apply self-care strategies, as well as they believed it promoted healthier lifestyle changes. These findings suggest that this program consists in an innovative approach with the potential to promote the psychological health and well-being of university students in adverse circumstances.info:eu-repo/semantics/publishedVersio

    Comparação dos Fluxos Noturnos de Co2 e Calor Sensível em Manaus e São Gabriel da Cachoeira

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    Comparação dos fluxos noturnos de CO2 e calor sensívelem Manaus e São Gabriel da Cachoeir

    Nighttime wind and scalar variability within and above an Amazonian canopy

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    Nocturnal turbulent kinetic energy (TKE) and fluxes of energy, CO2 and O3 between the Amazon forest and the atmosphere are evaluated for a 20-day campaign at the Amazon Tall Tower Observatory (ATTO) site. The distinction of these quantities between fully turbulent (weakly stable) and intermittent (very stable) nights is discussed. Spectral analysis indicates that low-frequency, nonturbulent fluctuations are responsible for a large portion of the variability observed on intermittent nights. In these conditions, the lowfrequency exchange may dominate over the turbulent transfer. In particular, we show that within the canopy most of the exchange of CO2 and H2O happens on temporal scales longer than 100 s. At 80 m, on the other hand, the turbulent fluxes are almost absent in such very stable conditions, suggesting a boundary layer shallower than 80 m. The relationship between TKE and mean winds shows that the stable boundary layer switches from the very stable to the weakly stable regime during intermittent bursts of turbulence. In general, fluxes estimated with long temporal windows that account for low-frequency effects are more dependent on the stability over a deeper layer above the forest than they are on the stability between the top of the canopy and its interior, suggesting that low-frequency processes are controlled over a deeper layer above the forest. © Author(s) 2018

    The CO2 record at the Amazon Tall Tower Observatory : A new opportunity to study processes on seasonal and inter-annual scales

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    High-quality atmospheric CO2 measurements are sparse in Amazonia, but can provide critical insights into the spatial and temporal variability of sources and sinks of CO2. In this study, we present the first 6 years (2014-2019) of continuous, high-precision measurements of atmospheric CO2 at the Amazon Tall Tower Observatory (ATTO, 2.1 degrees S, 58.9 degrees W). After subtracting the simulated background concentrations from our observational record, we define a CO2 regional signal (Delta CO2obs) that has a marked seasonal cycle with an amplitude of about 4 ppm. At both seasonal and inter-annual scales, we find differences in phase between Delta CO2obs and the local eddy covariance net ecosystem exchange (EC-NEE), which is interpreted as an indicator of a decoupling between local and non-local drivers of Delta CO2obs. In addition, we present how the 2015-2016 El Nino-induced drought was captured by our atmospheric record as a positive 2 sigma anomaly in both the wet and dry season of 2016. Furthermore, we analyzed the observed seasonal cycle and inter-annual variability of Delta CO2obs together with net ecosystem exchange (NEE) using a suite of modeled flux products representing biospheric and aquatic CO2 exchange. We use both non-optimized and optimized (i.e., resulting from atmospheric inverse modeling) NEE fluxes as input in an atmospheric transport model (STILT). The observed shape and amplitude of the seasonal cycle was captured neither by the simulations using the optimized fluxes nor by those using the diagnostic Vegetation and Photosynthesis Respiration Model (VPRM). We show that including the contribution of CO2 from river evasion improves the simulated shape (not the magnitude) of the seasonal cycle when using a data-driven non-optimized NEE product (FLUXCOM). The simulated contribution from river evasion was found to be 25% of the seasonal cycle amplitude. Our study demonstrates the importance of the ATTO record to better understand the Amazon carbon cycle at various spatial and temporal scales.Peer reviewe

    The CO2 record at the Amazon Tall Tower Observatory: A new opportunity to study processes on seasonal and inter-annual scales

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    Abstract High-quality atmospheric CO2 measurements are sparse in Amazonia, but can provide critical insights into the spatial and temporal variability of sources and sinks of CO2. In this study, we present the first 6 years (2014?2019) of continuous, high-precision measurements of atmospheric CO2 at the Amazon Tall Tower Observatory (ATTO, 2.1°S, 58.9°W). After subtracting the simulated background concentrations from our observational record, we define a CO2 regional signal () that has a marked seasonal cycle with an amplitude of about 4 ppm. At both seasonal and inter-annual scales, we find differences in phase between and the local eddy covariance net ecosystem exchange (EC-NEE), which is interpreted as an indicator of a decoupling between local and non-local drivers of . In addition, we present how the 2015?2016 El Niño-induced drought was captured by our atmospheric record as a positive 2σ anomaly in both the wet and dry season of 2016. Furthermore, we analyzed the observed seasonal cycle and inter-annual variability of together with net ecosystem exchange (NEE) using a suite of modeled flux products representing biospheric and aquatic CO2 exchange. We use both non-optimized and optimized (i.e., resulting from atmospheric inverse modeling) NEE fluxes as input in an atmospheric transport model (STILT). The observed shape and amplitude of the seasonal cycle was captured neither by the simulations using the optimized fluxes nor by those using the diagnostic Vegetation and Photosynthesis Respiration Model (VPRM). We show that including the contribution of CO2 from river evasion improves the simulated shape (not the magnitude) of the seasonal cycle when using a data-driven non-optimized NEE product (FLUXCOM). The simulated contribution from river evasion was found to be 25% of the seasonal cycle amplitude. Our study demonstrates the importance of the ATTO record to better understand the Amazon carbon cycle at various spatial and temporal scales

    Soluble iron nutrients in Saharan dust over the central Amazon rainforest

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    The intercontinental transport of aerosols from the Sahara desert plays a significant role in nutrient cycles in the Amazon rainforest, since it carries many types of minerals to these otherwise low-fertility lands. Iron is one of the micronutrients essential for plant growth, and its long-range transport might be an important source for the iron-limited Amazon rainforest. This study assesses the bioavailability of iron Fe(II) and Fe(III) in the particulate matter over the Amazon forest, which was transported from the Sahara desert (for the sake of our discussion, this term also includes the Sahel region). The sampling campaign was carried out above and below the forest canopy at the ATTO site (Amazon Tall Tower Observatory), a near-pristine area in the central Amazon Basin, from March to April 2015. Measurements reached peak concentrations for soluble Fe(III) (48 ng m−3), Fe(II) (16 ng m−3), Na (470 ng m−3), Ca (194 ng m−3), K (65 ng m−3), and Mg (89 ng m−3) during a time period of dust transport from the Sahara, as confirmed by ground-based and satellite remote sensing data and air mass backward trajectories. Dust sampled above the Amazon canopy included primary biological aerosols and other coarse particles up to 12 µm in diameter. Atmospheric transport of weathered Saharan dust, followed by surface deposition, resulted in substantial iron bioavailability across the rainforest canopy. The seasonal deposition of dust, rich in soluble iron, and other minerals is likely to assist both bacteria and fungi within the topsoil and on canopy surfaces, and especially benefit highly bioabsorbent species. In this scenario, Saharan dust can provide essential macronutrients and micronutrients to plant roots, and also directly to plant leaves. The influence of this input on the ecology of the forest canopy and topsoil is discussed, and we argue that this influence would likely be different from that of nutrients from the weathered Amazon bedrock, which otherwise provides the main source of soluble mineral nutrients

    The Amazon Tall Tower Observatory (ATTO): Overview of pilot measurements on ecosystem ecology, meteorology, trace gases, and aerosols

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    The Amazon Basin plays key roles in the carbon and water cycles, climate change, atmospheric chemistry, and biodiversity. It has already been changed significantly by human activities, and more pervasive change is expected to occur in the coming decades. It is therefore essential to establish long-term measurement sites that provide a baseline record of present-day climatic, biogeochemical, and atmospheric conditions and that will be operated over coming decades to monitor change in the Amazon region, as human perturbations increase in the future. The Amazon Tall Tower Observatory (ATTO) has been set up in a pristine rain forest region in the central Amazon Basin, about 150 km northeast of the city of Manaus. Two 80 m towers have been operated at the site since 2012, and a 325 m tower is nearing completion in mid-2015. An ecological survey including a biodiversity assessment has been conducted in the forest region surrounding the site. Measurements of micrometeorological and atmospheric chemical variables were initiated in 2012, and their range has continued to broaden over the last few years. The meteorological and micrometeorological measurements include temperature and wind profiles, precipitation, water and energy fluxes, turbulence components, soil temperature profiles and soil heat fluxes, radiation fluxes, and visibility. A tree has been instrumented to measure stem profiles of temperature, light intensity, and water content in cryptogamic covers. The trace gas measurements comprise continuous monitoring of carbon dioxide, carbon monoxide, methane, and ozone at five to eight different heights, complemented by a variety of additional species measured during intensive campaigns (e.g., VOC, NO, NO2, and OH reactivity). Aerosol optical, microphysical, and chemical measurements are being made above the canopy as well as in the canopy space. They include aerosol light scattering and absorption, fluorescence, number and volume size distributions, chemical composition, cloud condensation nuclei (CCN) concentrations, and hygroscopicity. In this paper, we discuss the scientific context of the ATTO observatory and present an overview of results from ecological, meteorological, and chemical pilot studies at the ATTO site. © Author(s) 2015

    Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

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    Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries
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