bluuebunny/crossref_metadata_2025 huggingface dataset:
A 1500-year multiproxy record of coastal hypoxia from the northern Baltic Sea indicates unprecedented deoxygenation over the 20th century
Authors: Jokinen Sami A. , Virtasalo Joonas J. , Jilbert Tom , Kaiser Jérôme , Dellwig Olaf , Arz Helge W. , Hänninen Jari , Arppe Laura , Collander Miia , Saarinen Timo
Published: July 2018

Abstract. The anthropogenically forced expansion of coastal hypoxia is a
major environmental problem affecting coastal ecosystems and biogeochemical
cycles throughout the world. The Baltic Sea is a semi-enclosed shelf sea
whose central deep basins have been highly prone to deoxygenation during its
Holocene history, as shown previously by numerous paleoenvironmental studies.
However, long-term data on past fluctuations in the intensity of hypoxia in
the coastal zone of the Baltic Sea are largely lacking, despite the
significant role of these areas in retaining nutrients derived from the
catchment. Here we present a 1500-year multiproxy record of near-bottom water
redox changes from the coastal zone of the northern Baltic Sea, encompassing
the climatic phases of the Medieval Climate Anomaly (MCA), the Little Ice Age
(LIA), and the Modern Warm Period (MoWP). Our reconstruction shows that
although multicentennial climate variability has modulated the depositional
conditions and delivery of organic matter (OM) to the basin the modern
aggravation of coastal hypoxia is unprecedented and, in addition to gradual changes
in the basin configuration, it must have been forced by excess human-induced
nutrient loading. Alongside the anthropogenic nutrient input, the progressive
deoxygenation since the beginning of the 1900s was fueled by the combined
effects of gradual shoaling of the basin and warming climate, which amplified
sediment focusing and increased the vulnerability to hypoxia. Importantly,
the eutrophication of coastal waters in our study area began decades earlier
than previously thought, leading to a marked aggravation of hypoxia in the
1950s. We find no evidence of similar anthropogenic forcing during the MCA.
These results have implications for the assessment of reference conditions
for coastal water quality. Furthermore, this study highlights the need for
combined use of sedimentological, ichnological, and geochemical proxies in
order to robustly reconstruct subtle redox shifts especially in dynamic,
non-euxinic coastal settings with strong seasonal contrasts in the bottom
water quality.
Spring phenology and phenology-climate links inferred from two remotely sensed vegetation indices across regions and biomes
Authors: Xu Xiyan , Riley William J. , Koven Charles D. , Jia Gensuo
Published: July 2018

Abstract. The timing of spring greenup (SG) as inferred by remotely sensed vegetation indices have showed contrasting dynamics across the same region and periods. Assessing the uncertainty in SG associated with different Normalized Difference Vegetation Index (NDVI) products is essential for robustly interpreting the links between climate and phenological dynamics. We compare SG inferred from two NDVI products over the period 2001–2013: (1) Terra Moderate Resolution Imaging Spectroradiometer (MODIS) and (2) National Oceanic and Atmospheric Administration's (NOAA's) Advanced Very High Resolution Radiometer (AVHRR) instruments processed by the Global Inventory Monitoring and Modeling Studies (GIMMS) to explore confidence and uncertainty in the NDVI-inferred SG trend and its links to climate variability. Both MODIS and GIMMS agreed in showing an advancement of SG in northern Canada, the eastern United States, and Russia, as well as a delay in SG in western North America, parts of Baltic Europe and East Asia. In the regions with advanced SG, GIMMS inferred much weaker advancement whereas in the regions with delayed SG, GIMMS inferred much stronger delay than MODIS. This resulted in a GIMMS SG delay in both North America and Eurasia. MODIS data show no significant SG shift in North American for spatial heterogeneity in SG shift, but dominant SG advancement in Eurasia. The SG advancement inferred from MODIS is associated with a stronger coupling between SG and temperature and a stronger sensitivity across biomes as compared to GIMMS. The main uncertainty in the SG trend and SG-temperature sensitivity are in northern high latitudes (>50° N) where GIMMS and MODIS show different magnitude and sign of the annual SG anomalies. Compared to 1988–2000, inter-biome GIMMS SG-temperature sensitivity is stable and the SG-temperature sensitivity increased in the boreal and Arctic biomes despite a slight reduction in the SG-temperature coupling over the period 2001–2013. The explanation for the increased SG-temperature sensitivity remains unclear and requires further investigation. We suggest broader evaluation of the NDVI products against field measurements and inter-validation for robust assessment of vegetation dynamics.
Synchrony in catchment stream colour levels is driven by both local and regional climate
Authors: Doyle Brian C. , de Eyto Elvira , Dillane Mary , Poole Russell , McCarthy Valerie , Ryder Elizabeth , Jennings Eleanor
Published: July 2018

Abstract. Streams draining upland catchments mobilise significant loads of carbon from terrestrial reservoirs to downstream freshwater and marine aquatic ecosystems and ultimately, via a range of biotic and abiotic processes, to the atmosphere. There are increasing concerns over the long-term stability of terrestrial carbon stores in blanket peatland catchments as a result of anthropogenic pressures and climate change. We analysed sub-annual and inter-annual changes in river water colour (a reliable proxy measurement of dissolved organic carbon (DOC)) using six years of weekly data (2011 to 2016) from three contiguous river sub-catchments (Black, Glenamong and Srahrevagh) in a blanket peatland catchment system in western Ireland, assessing differences in catchment characteristics and in the drivers of temporal change. General additive mixed modelling was used to identify the principle environmental drivers controlling changes in colour concentration in the rivers, while wavelet cross correlation analysis was used to identify common frequencies. Although at 130 mg PtCo L−1, the colour levels in the Srahrevagh (the subcatchment with lower rainfall and higher forest cover) were almost 50 % higher than those from the Black and Glenamong, 95 and 84 mg PtCo L−1 respectively. The decomposition of the colour datasets revealed similar multi-annual, annual, and event-based (random component) trends, illustrating that environmental drivers operated synchronously at each of these temporal scales, and also spatially within the same catchment. For the Black and its nested Srahrevagh catchment, soil temperature, soil moisture deficit and the weekly North Atlantic Oscillation (NAO) explained 54 % and 58 % of the deviance in colour respectively. In the Glenamong, which had steeper topography and a higher percentage of peat intersected by streams, soil temperature, log of discharge and the NAO explained 66 % of the colour concentrations. Cross-wavelet time-series analysis between river colour and each environmental driver revealed a significant high common power relationship at an annual time step. Each each relationship however, varied in phase, further highlighting the complexity of the mechanisms driving river colour in the sub-catchments. The estimated mean annual DOC loads for the Black and Glenamong rivers to Lough Feeagh were 15 t C km2 yr−1 and 14.7 t C km2 yr−1 respectively, although the export values displayed significant inter-annual variation. The results of the study highlight the interaction of catchment conditions and regional meteorological drivers of aquatic carbon export and, therefore the vulnerability of blanket peatland carbon stores to changes in temperature and precipitation. These changes are presently being observed and are predicted to become increasingly extreme and variable.
A mechanistic model for electrical conduction in soil–root continuum: a virtual rhizotron study
Authors: Rao Sathyanarayan , Meunier Félicien , Ehosioke Solomon , Lesparre Nolwenn , Kemna Andreas , Nguyen Frédéric , Garré Sarah , Javaux Mathieu
Published: July 2018

Abstract. Electrical Resistivity Tomography (ERT) has become an important tool to study soil water fluxes in cropped field. ERT results translates to water content via empirical pedophysical relations that take soil physical properties into account, usually ignoring the impact of roots. Studies shows high root dense soils behaves quite differently than less root dense soils in terms of bulk electrical conductivity. Yet, we do not completely understand the impact of root segments on the ERT measurements. In this numerical study, we coupled an electrical model with a plant-soil water flow model to investigate the impact of plant root growth and water uptake on the ERT virtual experiment. The electrical properties of roots were explicitly accounted in the finite element mesh and we obtained the electrical conductivities of root segments by conducting specific experiments on real maize plants. The contrast between electrical conductivity of roots and soil depends on factors such as root density, irrigation, root age, and root water uptake pattern. Root growth and water uptake processes thus affect this contrast together with the soil electrical properties. Model results indicate a non-negligible anisotropy in bulk electrical conductivity induced by root processes. We see a greater anisotropy in a sandy medium when compared to a loamy medium. We find that the water uptake process dominates the bulk electrical properties. The Gauss-Newton type ERT inversion of virtual rhizotron data demonstrate that, when root-soil electrical conductivity contrasts are high, it can lead to error in water content estimates since the electrical conductivity is partly due to root. Thus, incorporating the impact of root in the pedophysical relations is very important to interpret ERT results directly as water content.
Global radiation, photosynthetically active radiation, and the diffuse component dataset of China, 1981–2010
Authors: Ren Xiaoli , He Honglin , Zhang Li , Yu Guirui
Published: July 2018

Abstract. Solar radiation, especially photosynthetically active radiation (PAR), is the main energy source of plant photosynthesis, and the diffuse component can enhance canopy light use efficiency, thus increasing ecosystem productivity. In order to predict the terrestrial ecosystem productivity precisely, we not only need global radiation and PAR as driving variables, but also need to treat diffuse radiation and diffuse PAR explicitly in ecosystem models. Therefore, we generated a series of radiation datasets, including global radiation, diffuse radiation, PAR, and diffuse PAR of China from 1981 to 2010, based on the observations of the China Meteorology Administration (CMA) and the Chinese Ecosystem Research Network (CERN). The dataset should be useful for the analysis of the spatiotemporal variations of solar radiation in China and the impact of diffuse radiation on terrestrial ecosystem productivity based on ecosystem models. The dataset is freely available from Zenodo on the following website: https://zenodo.org/record/1198894#.Wx6–C_MwWo (https://doi.org/10.11922/sciencedb.555, Ren et al., 2018).
Near real time environmental monitoring and large volume data
collection over slow communication links
Authors: Krassovski Misha B. , Lyon Glen E. , Riggs Jeffery S. , Hanson Paul J.
Published: July 2018

Abstract. Climate change studies are one of the most important aspects of modern science and related experiments are getting bigger and more complex. One such experiment is the Spruce and Peatland Responses Under Climatic and Environmental Change experiment (SPRUCE, http://mnspruce.ornl.gov) conducted in in northern Minnesota. The SPRUCE experimental mission is to assess ecosystem-level biological responses of vulnerable, high carbon terrestrial ecosystems to a range of climate warming manipulations and an elevated CO2 atmosphere. This manipulation experiment generates a lot of observational data and requires a reliable onsite data collection system, dependable methods to transfer data to a robust scientific facility, and real-time monitoring capabilities. This publication shares our experience of establishing near real time data collection and monitoring system via a satellite link using not very well-known possibilities of PakBus protocol.
OMEN-SED 1.0: a novel, numerically efficient organic matter sediment diagenesis module for coupling to Earth system models
Authors: Hülse Dominik , Arndt Sandra , Daines Stuart , Regnier Pierre , Ridgwell Andy
Published: July 2018

Abstract. We present the first version of
OMEN-SED (Organic Matter ENabled SEDiment model), a new, one-dimensional
analytical early diagenetic model resolving organic matter cycling and
the associated biogeochemical dynamics in marine sediments designed to be coupled
to Earth system models. OMEN-SED explicitly describes organic matter
(OM) cycling and the associated dynamics of the most important
terminal electron acceptors (i.e. O2 , NO3, SO4) and
methane (CH4), related reduced substances (NH4, H2S),
macronutrients (PO4) and associated pore water quantities
(ALK, DIC). Its reaction network accounts for the most
important primary and secondary redox reactions, equilibrium reactions,
mineral dissolution and precipitation, as well as adsorption and desorption
processes associated with OM dynamics that affect the dissolved and solid
species explicitly resolved in the model. To represent a redox-dependent
sedimentary P cycle we also include a representation of the formation and
burial of Fe-bound P and authigenic Ca–P minerals. Thus, OMEN-SED is able to
capture the main features of diagenetic dynamics in marine sediments and
therefore offers similar predictive abilities as a complex, numerical
diagenetic model. Yet, its computational efficiency allows for its coupling to
global Earth system models and therefore the investigation of coupled global
biogeochemical dynamics over a wide range of climate-relevant timescales.
This paper provides a detailed description of the new sediment model, an
extensive sensitivity analysis and an evaluation of OMEN-SED's
performance through comprehensive comparisons with observations and results
from a more complex numerical model. We find that solid-phase and dissolved pore
water profiles for different ocean depths are reproduced with good accuracy
and simulated terminal electron acceptor fluxes fall well within the range of
globally observed fluxes. Finally, we illustrate its application in an Earth
system model framework by coupling OMEN-SED to the Earth system model cGENIE
and tune the OM degradation rate constants to optimise the fit of simulated
benthic OM contents to global observations. We find that the simulated sediment
characteristics of the coupled model framework, such as OM degradation rates,
oxygen penetration depths and sediment–water interface fluxes, are generally
in good agreement with observations and in line with what one would expect on
a global scale. Coupled to an Earth system model, OMEN-SED is thus a powerful
tool that will not only help elucidate the role of benthic–pelagic exchange
processes in the evolution and the termination of a wide
range of climate events, but will also allow for a direct comparison of model
output with the sedimentary record – the most important climate archive on
Earth.
Redressing the balance: quantifying net intercatchment groundwater flows
Authors: Bouaziz Laurène , Weerts Albrecht , Schellekens Jaap , Sprokkereef Eric , Stam Jasper , Savenije Hubert , Hrachowitz Markus
Published: July 2018

Abstract. Intercatchment groundwater flows (IGF), defined as groundwater flows across topographic divides, can occur as regional groundwater flows that bypass headwater streams and only drain into the channel further downstream or directly to the sea. However, groundwater flows can also be diverted to adjacent river basins due to geological features (e.g., faults, dipping beds and highly permeable conduits). Even though intercatchment groundwater flows can be a significant part of the water balance, they are often not considered in hydrological studies. Yet, assuming this process to be negligible may introduce misrepresentation of the natural system in hydrological models, for example in regions with complex geological features. The presence of limestone formations in France and Belgium potentially further exacerbates the importance of intercatchment groundwater flows, and thus motivates to question the validity of neglecting intercatchment groundwater flows in the Meuse basin. To isolate and quantify the potential relevance of net intercatchment groundwater flows in this study, we propose a three step approach that relies on the comparison and analysis of (1) observed water balance data within the Budyko framework, (2) results from a suite of different conceptual hydrological models and (3) remote sensing based estimates of actual evaporation. The data of 58 catchments in the Meuse basin provides evidence of the likely presence of significant net intercatchment groundwater flows occurring mainly in small headwater catchments underlain by fractured aquifers. The data suggests that the relative importance of net intercatchment groundwater flows reduces at the scale of the Meuse basin, as regional groundwater flows are mostly expected to be self-contained in large basins. The analysis further suggests that net intercatchment groundwater flow processes vary over the year and that at the scale of the headwaters, net intercatchment groundwater flows can make up a relatively large proportion of the water balance (on average 10 % of mean yearly precipitation) and should be accounted for to prevent overestimating actual evaporation rates.
Density structure and isostasy of the lithosphere in Egypt and their relation to seismicity
Authors: Kaban Mikhail K. , El Khrepy Sami , Al-Arifi Nassir
Published: July 2018

Abstract. A joint analysis of the new satellite–terrestrial gravity field model with recent data on the crustal structure and seismic tomography was conducted to create an integrative model of the crust and upper mantle and to investigate the relation of the density structure and the isostatic state of the lithosphere to the seismicity of Egypt. We identified the distinct fragmentation of the lithosphere of Egypt in several blocks. This division is closely related to the seismicity patterns in this region. The relatively dense and strong lithosphere in the Nile Delta limits the seismic activity within this area, while earthquakes are mainly associated with the boundaries of this block. In the same way, the relatively strong lithosphere in the Isthmus of Suez and northern Mediterranean prevents the Gulf of Suez from opening further. The central part of Egypt is generally characterized by an increased density of the mantle, which extends to the Mediterranean at a depth of 100 km. This anomaly deepens southward to Gilf Kebir and eastward to the Eastern Desert. The average density of the crystalline crust is generally reduced in this zone, indicating the increased thickness of the upper crust. The low-density anomaly under the northern Red Sea is limited to 100–125 km, confirming the passive origin of the extension. Most of the earthquakes occur in the crust and uppermost mantle in this structure due to the hot and weak upper mantle underneath. Furthermore, an asymmetric lithosphere structure is observed across the northern Red Sea. The isostatic anomalies show the fragmentation of the crust of Sinai with the high-density central block. Strong variations in the isostatic anomalies are correlated with the high level of seismicity around Sinai. This tendency is also evident in the northern Red Sea, east of the Nile Valley, and in parts of the Western Desert.
Willingness to change car use under a tradable driving credits scheme: A comparison between Beijing and the Netherlands
Authors: Dogterom Nico , Bao Yue , Xu Meng , Ettema Dick
Published: July 2018

Recent years have seen a surge of interest in the concept of tradable driving credits (TDC) as an alternative to road pricing and driving restriction measures. However, empirical research into drivers’ responses to a TDC measure is limited and even lacking for the Chinese context where the concept of TDC has attracted considerable attention. This paper reports the results of a survey that was the first to investigate drivers’ willingness to change car use under a hypothetical distance-based TDC measure in China (Beijing) and aimed to compare these results with the results of a comparative Dutch survey. We observed that willingness to change was considerably higher in Beijing than in the Netherlands and that a substantial share of Beijing car owners indicated an increase in car use. In both contexts, higher education and higher car use intensity had a positive effect on the willingness to change, whereas higher income had a negative effect. We found mixed results for household size, respondents’ car attitudes, and TDC scenario characteristics.
O que há de especificamente comunicacional na religião?
Authors: Regiani Herivelton , Borelli Viviane
Published: July 2018

A partir de distintas abordagens do fenômeno religioso pelas ciências sociais e humanas, indaga-se sobre a contribuição específica do olhar comunicacional sobre o campo religioso. Em função do papel preponderante que a mídia exerce recentemente, considera-se que o conceito de midiatização possibilita uma aproximação teórica e metodológica entre esses campos. Para problematizar a religião como objeto de estudo específico para o campo científico da comunicação, faz-se uma revisão bibliográfica para discutir alguns conceitos centrais para o estudo: objeto da comunicação, campos e midiatização. A reflexão aponta que o olhar comunicacional sobre o objeto religioso incide especificamente sobre os aspectos que evidenciam o processo de midiatização da religião.
Comunicação Comunitária na igreja: um debate por dentro da catequese
Authors: Ávila Otávio Cezarini , Deliberador Luzia M. Yamashita
Published: July 2018

O artigo é fruto de uma pesquisa realizada no trabalho catequético de uma paróquia na cidade de Londrina/PR, que contém em sua metodologia a observação das “aulas”, entrevistas com catequistas e um grupo focal com catequizandos do último período catequético. A construção teórica está baseada na comunicação comunitária e suas influências através dos estudos latino-americanos em comunicação, ressaltando, contudo, valores de pertencimento, cidadania e engajamento social. A pesquisa busca responder se a catequese prepara o adolescente para ser cidadão na sociedade contemporânea a partir da experiência vivenciada e busca trazer algumas pistas para a formulação de uma catequese comunicativa e comunitária.
O mercado de bens simbólicos: a viabilidade política e midiática do Templo de Salomão junto aos stakeholders
Authors: Bazanini Roberto , Miklos Jorge , Bazanini Homero Leoni , Giradelli Gracy
Published: July 2018

No mercado de bens simbólicos, os diferentes grupos de stakeholders constituem elementos representativos na comercialização de produtos e serviços religiosos, ambiente no qual, em termos mercadológicos, contemporaneamente, os megatemplos representam a praça por excelência desse empreendimento. Por intermédio de pesquisa exploratória, de natureza qualitativa, o objetivo da pesquisa está em analisar a importância do Templo de Salomão, megatemplo da Igreja Universal do Reino de Deus (IURD), inaugurado em 31 de julho de 2014, como empresa inserida no concorrencial de bens e serviços religiosos para o alcance de vantagem competitiva. Os resultados da pesquisa apontam que a criação de megatemplos pode ser concebida uma situação real de mercado competitivo capaz de influenciar as estruturas das organizações religiosas pela visibilidade política e midiática que proporciona. A contribuição da pesquisa está em discutir a pertinência da aplicabilidade da teoria dos stakeholders no mercado de bens simbólicos da religião por permitir estudar a criação dos megatemplos como estratégia de marketing a partir da perspectiva dos relacionamentos com outros atores situados no mesmo campo social e estabelecer relações entre a lógica capitalista e a doutrina religiosa.
A EDUCAÇÃO GEOGRÁFICA À MARGEM DA CIÊNCIA GOETHEANA: a prática do diário da natureza
Authors: Dias Juliana Maddalena Trifilio , Dal Gallo Priscila Marchiori
Published: July 2018

No presente texto buscamos realizar uma discussão a respeito da educação geográfica para além dos saberes escolares e pensando o geográfico em uma dimensão constitutiva do ser-humano. Buscamos pensar uma educação geográfica que se ocupe em adensar a subjetividade a partir de práticas que priorizem a sensibilização e a frutificação de uma nova racionalidade. Para tanto, buscamos aportes que discutam a epistemologia, entendendo esta como a forma do conhecer que se valha do ato criativo como sua fundação e que coloca o entendimento de uma base ontológica para propormos uma educação geográfica que trate de subjetividade. Nossa proposta culmina na prática do Diário da Natureza, uma prática que vale-se da arte como motor criativo e sensível diante da leitura geográfica de mundo que cada um constrói ao longo da vida, algo que nos constitui, atravessa nossa experiência e ultrapassa qualquer restrição a um saber escolarizado.
A GEOGRAFIA ESCOLAR E AS TEMÁTICAS FÍSICO-NATURAIS NA BNCC: desafios à prática docente e à formação de professores
Authors: Cunha Leonardo Ferreira Farias da
Published: July 2018

A Base Nacional Comum Curricular (BNCC) fixa conteúdos mínimos para a educação básica brasileira e tem como objetivo ser a referência tanto para a construção de currículos como para a prática docente. Neste sentido, o presente texto tem por objetivo discutir a BNCC no Brasil, bem como analisar como os conteúdos de Geografia relacionados às temáticas físico-naturais aparecem neste documento. Para isso realizou-se uma análise documental focada nos objetivos deste marco legal e especialmente nas habilidades e competências esperadas para os anos finais do ensino fundamental, na disciplina de Geografia segundo tais temáticas. Foi possível concluir que os conteúdos relativos às temáticas físico-naturais no recorte analisado, não são claramente mencionados, nem podem ser facilmente deduzíveis a partir da BNCC, o que cria um desafio para professores e instituições formadoras.
O ENSINO DE GEOGRAFIA NO CONTEXTO DA EDUCAÇÃO DO CAMPO: um relato sobre a escola família agrícola de Natalândia - Minas Gerais
Authors: Morais Eduardo Henrique Modesto de , Morais Juliana Juliana Lopes Lelis de
Published: July 2018

O presente artigo busca compreender se o Ensino de Geografia influencia na efetivação de uma Educação do Campo no território da Escola Família Agrícola de Natalândia - MG. É possível afirmar que a Geografia pode contribuir com a Educação do Campo, pois busca refletir acerca do campo como um território de disputas e contribuir para a compreensão do campo e de seus sujeitos, além de auxiliar na recuperação e potencialização do vínculo entre a formação humana e produção material da existência dessa população, fortalecendo a identidade individual dos sujeitos e coletiva dos grupos. O presente artigo é um produto da tese de doutorado, ainda em andamento, intitulada “O Ensino de Geografia no contexto da Educação do Campo na Escola Família Agrícola de Natalândia – EFAN, Minas Gerais”.
A EDUCAÇÃO NA CONSTITUIÇÃO DO SUJEITO: reflexões numa perspectiva cidadã
Authors: Oliveira Tarcisio Dorn de , Copatti Carina , Callai Helena Copetti
Published: July 2018

As transformações contemporâneas que envolvem a sociedade nos instigam a novos debates no sentido de propor algumas reflexões sobre a educação como processo importante na constituição dos sujeitos e para a sua formação cidadã. A educação pode ser o caminho para desenvolver ações que propiciem aos estudantes uma formação que os tornem mais reflexivos e conscientes, para pensar sobre como ocorrem as dinâmicas no espaço que os rodeia, compreendendo sua responsabilidade pelo mundo e pelas mudanças que se fazem necessárias. A presente investigação teórica intenta abordar questões relacionadas à educação como parte do processo de constituição dos seres humanos e, nesse sentido, essencial para que se construam as bases para atuar socialmente, de modo cidadão.
Traduzindo o dialeto do personagem chico bento do Português para libras por meio da Elis
Authors: Spicacci Aline Alkmin Camargo , Barros Mariângela Estelita
Published: July 2018

Este artigo descreve o trabalho de tradução de duas tirinhas do personagem Chico Bento, de Maurício de Sousa, do português para a Libras, por meio da escrita ELiS, sistema criado por Barros. A partir de reflexões de teóricos da tradução e um diagnóstico de Senghas, Kita e Özyurek sobre a Língua de Sinais Nicaraguense emergente, que serviu de referência para as nossas soluções tradutórias, traçamos um paralelo entre o dialeto do personagem Chico Bento e o dialeto dos surdos da Nicarágua, pois tanto um como outros se encontram em situação de isolamento em relação à cultura dominante. Na Nicarágua os surdos produzem sinais mais icônicos, com uso recorrente de classificadores, que foram igualmente utilizados pelo personagem Chico Bento em nossas traduções.
Contextos ortográficos do sistema ELis – sinais com mão de apoio
Authors: Camargo Vinícius Afonso de , Barros Mariângela Estelita
Published: July 2018

O presente artigo, de cunho teórico-analítico, tem o objetivo de perceber e compreender como são estabelecidos certos contextos ortográficos do sistema brasileiro de escrita das línguas de sinais (ELiS), e especificamente fazer o levantamento de todos os sinais com mão de apoio que apresentam dois pontos de articulação (PA), a partir do corpus criado em projeto realizado em 2014 pelo Laboratório de Leitura e Escrita das Línguas de Sinais (LALELIS), da Faculdade de Letras, da Universidade Federal de Goiás. Para que a análise linguística deste sistema seja estabelecida, este estudo se debruçará teoricamente no livro ELiS: Sistema brasileiro de escrita das línguas de sinais, Barros (2015) e no Novo Dicionário Enciclopédico Ilustrado Trilíngue da Língua Brasileira de Sinais, de Capovilla, Raphael e Mauricio (2013).
Dietary habits, obesity and university life for nurse undergraduates
Authors: Theofanidis Dimitrios , Fountouki Antigoni
Published: July 2018

Health behavior of nursing students is often inadequate in terms of dietary, physical activity, smoking and alcohol drinking habits. The main aim of this position paper is to explore dietary habits, obesity and university life on nurse undergraduates. This critical review covers three distinct dimensions of student life as related to nursing studies, i.e. the eating and lifestyle behaviors of nursing students; the transitional period and risk of gain weight; students’ national origin and eating behaviors.Obesity is increasing not only in the western world but in developing countries as well. University life is a transitional period where risk of weight gain is increased. Often, stress may lead students to ‘binge’ eating and weight problems. In terms of students’ national origin and eating behavior, dietary choices for nurse students are multifaceted, as their cultural backgrounds may be. Nurses, amongst other healthcare professionals, encounter barriers to positive lifestyles and healthy eating just as many of their patients do. Moreover, as healthcare professionals are regarded as potential health promoters, their own health behavior represents an important key clinical and educational function.Yet, nutritional knowledge is not easy to apply as there is so much misinformation readily available both online and elsewhere.Given the highly stressful conditions associated with their profession, nurses also need to care for their own health. Thus there is a need for designing educational programs for current nursing curricula to encourage healthy lifestyles which include coping with stress, increased physical activity, healthy food and drink choices.
Análise evolutiva e caracterização dos depósitos tecnogênicos associados ao bairro Coroa do Meio, Aracaju/SE
Authors: Mota Luana Santos Oliveira , Souza Rosemeri Melo e
Published: July 2018

O presente trabalho tem por escopo a identificação e classificação de depósitos tecnogênicos presentes no bairro Coroa do Meio, Aracaju/SE, na margem direita da desembocadura do rio Sergipe. A pesquisa foi conduzida em três etapas: análise da evolução da desembocadura fluvial em longo e médio prazos e identificação dos depósitos tecnogênicos a partir de execução de sondagens simples e reconhecimento de solo a trado em quatro pontos (T2 e T4 – primeiro aterro e T1 e T3 – segundo aterro). A análise da evolução da desembocadura apontou que o surgimento do bairro esteve associado à migração e à anexação de bancos arenosos à costa entre os anos de 1823 e 1914. Na década de 1980 deu-se início ao aterramento da área, ocorrido em duas fases. Nos testemunhos 1 (125 cm de profundidade) e 2 (100 cm de profundidade) identificou-se a presença de areia fina siltosa e pouco siltosa alternando entre as camadas, sem a presença de artefatos de origem humana. Estes depósitos, que compõem a primeira fase do aterro, foram derivados do processo de remobilização de sedimentos da planície de maré e mesmo não apresentando artefatos antrópicos, foram classificados como depósitos tecnogênicos em função da sua gênese ser resultante da influência humana direta. Já nos testemunhos 1 e 3 (135 cm de profundidade) identificou-se que a primeira camada é formada basicamente por argila siltosa e pedregulhos, enquanto as restantes apresentam alternância entre camadas de areia fina e areia fina pouco siltosa. Na última camada foram identificados detritos de procedência humana originários de restos de construção. Conclui-se, a partir das características observadas, que o setor associado ao primeiro aterro é composto por materiais dragados, enquanto o segundo aterro é composto por materiais úrbicos.
Disappointment
Authors: Zigon Jarrett
Published: July 2018

For many today politics is characterized above all else by disappointment. Inspired by years of ethnographic research with the global anti-drug war movement, Disappointment addresses this disappointment by offering a framework for a politics that rises to the demand of our radical finitude. A politics that rises to the demand of radical finitude is a politics that finds its problems, antagonists, motivations, strategies, tactics, in a word, its call to action, in a world grounded in nothing other than the situations and existents that constitute it. This book takes up the challenge of offering such a framework by showing how ontological starting points have real political implications. A central argument of World-Building is that what is normally called ontology, politics, and ethics are actually three aspects or modalities of the same tradition, and therefore a critical engagement with one necessitates a critical engagement with the other two; that is, with the ontological tradition as a whole. This realization allows us to see how an alternative ontological starting point may lead to alternative political and ethical possibilities. With this as its task, Disappointment offers a critical hermeneutics of the dominant ontological tradition of our time and does so by means of both deconstruction and conceptual creativity. The politics of world-building that results seeks to move beyond metaphysical humanism and its exhausted concepts such as rights, responsibility and dignity, and begin to enact an ontology of worlds by means of such concepts as situation, dwelling, and attunement.
Modeling surface fire rate of spread within a thinned Anatolian black pine stand in Turkey
Authors: Kucuk Omer , Bilgili Ertugrul , Uzumcu Rifat
Published: July 2018

Aim of the study: To develop regression models for estimating the rate of surface fire spread in a thinned even-aged black pine stand (Pinus nigra J.F. Arnold subsp. nigra var. caramanica (Loudon) Rehder).Area of the study: The study was carried out within a thinned black pine forest located in the Kastamonu Forest District, northwestern Turkey. The study area is located at 546819, 4577880 UTM.Material and methods: A total of 33 small scale surface fires were ignited under varying weather and fuel conditions. Line ignition was used during the burnings. Surface fuels consisted generally of thinned material (needle+branches).Main results: Within the stand, surface fuel loading ranged from 3.0 to 10.2 kg/m2. Wind speed ranged from 0.3 to 8.4 km/h. Needle moisture content ranged from 8 to 15%. The rate of fire spread ranged from 0.47 to 6.92 m/min. Relationships between the rate of fire spread and fuel and weather conditions were determined through regression analyses.Research highlights: Wind speed was the most important factor on the rate of fire spread and explained 85% of the observed variation in the surface fire rate of spread within a stand.
The Reasons and Evaluations of Mergers and Acquisitions
Authors: Almazur Bader , Arize Augustine C. , Andreopoulos Giuliana Campanelli , Malindretos John , Panayides Alex
Published: July 2018

This paper looks at mergers and acquisitions of companies. Specifically, the paper reviews the backdrop of mergers and takeovers, their history, types and reasons, prospects of productivity, synergy, growth, reduction of risk, and associated challenges. The analysis is conducted in the light of mergers and acquisitions in Europe and the United States, which are hotbeds of M&A activities. Through the selected cases, different pre- and post-merger situations are carefully analyzed. The findings are presented in both quantitative and qualitative forms, and the discussion elucidates the findings in light of existing literature on mergers and acquisitions. The paper concludes with solutions to some of the key challenges that mergers and acquisitions face. This exposition contains both text and graphical information and representation of information regarding mergers and acquisition and it provides succinct but relevant analysis of mergers in the 21st century.
Intra-articular Gentamicin-loaded PLA Microparticle Injection for the Treatment of Septic Arthritis in Rabbits
Authors: Marcheix Pierre-Sylvain , Martin Christian , Fiorenza Fabrice , Leclercq Xiaoling , Sturtz Franck
Published: July 2018

Background:

Because local delivery of drugs induces high concentrations, it could be helpful to apply these delivery systems to the treatment of septic arthritis by antibiotics. Thus, a gentamicin-loaded polymer was tested in a rabbit model of Staphylococcus aureus septic arthritis.

Methods:

Thirty New Zealand rabbits were split into five groups: A: infection only; B: infection and systemic gentamicin treatment; C: infection and unloaded polymer and systemic gentamicin treatment; D: infection and gentamicin-loaded polymer only; and E: no infection and unloaded polymer. After inducing nonlethal septic arthritis in the knee joint by injecting 103 colony-forming units (CFUs) of a strain of methicillin-sensitive S aureus in groups A, B, C, and D, rabbits were housed for 15 days, and then the joint capsules were removed and the remaining bacteria were counted. Bacterial load was expressed in CFUs per gram of synovial tissue. In group E, capsules were removed, and a pathologic examination was done.

Results:

At day 15, the bacterial load was 6 × 108, 2 × 109, 1.8 × 107, and 7 × 103 CFU/g of tissue for groups A, B, C, and D, respectively. Compared with the mean of groups A, B, and C, the bacterial load of group D was 4.94 units of log10 CFU/g lower than that of these groups. The bacterial load of group D was statistically significantly lower than that of the other three groups. Noticeably, two animals of group D had a nil bacterial count. In group E animals, a minimal foreign body reaction was observed around the polymer.

Discussion:

Gentamicin-containing microparticles were more efficient in reducing bacterial load than systemic injections of gentamicin and thus have an interesting role to play in the treatment of human arthritis. However, inserting microparticles in joints is not easy, and hydrogels might be a good alternative approach.
Uitwinning van pandrecht op aandelen – hoe staat het ermee?
Authors: Mwangi B.N. , Verhelst S.C.P.
Published: July 2018

Uitwinning van pandrecht op aandelen – hoe staat het ermee?

Pandrechten op aandelen zijn veelvuldig onderdeel van het zekerhedenpakket dat aan financiers wordt verstrekt. De uitwinning van deze pandrechten lijkt relatief weinig voor te komen. De wettelijke regels daaromtrent zijn summier en de beschikbare jurisprudentie over dit onderwerp is beperkt. Recentelijk zijn echter de Solutus-zaak (Rb. Amsterdam 19 juni 2016, JOR 2017/301 m.nt. P.H.N. Quist) en de Sawgrass-zaak (Rb. Amsterdam 10 oktober 2017, JOR 2018/75 m.nt. T. Hutten) gepubliceerd. Mede aan de hand van deze uitspraken zetten de auteurs uiteen wat de stand van zaken is met betrekking tot de uitwinning van een pandrecht op aandelen en hoe hieraan in de praktijk invulling wordt gegeven.
De rol van de OR bij (aandelen)overnames: lessons learned uit de recente jurisprudentie
Authors: Zaal I.
Published: July 2018

De rol van de OR bij (aandelen)overnames: lessons learned uit de recente jurisprudentie

De afgelopen jaren heeft de Ondernemingskamer een aantal belangwekkende beschikkingen voor de overnamepraktijk gewezen. In deze bijdrage geeft de auteur een overzicht van de medezeggenschapsrechtelijke aspecten van een (aandelen)overname. Zij gaat onder meer in op: het tijdstip van advisering, de informatie die aan de OR moet worden verstrekt, en het begrip medeondernemerschap.
Verbetering van de positie van werknemers in faillissement
Authors: Ecker L.
Published: July 2018

Verbetering van de positie van werknemers in faillissement

De positie van werknemers in faillissement is recentelijk verbeterd. Dit blijkt onder andere uit de zaken van DA Retailgroep en Smallsteps. In de eerste zaak kende de Hoge Raad een adviesrecht toe aan de ondernemingsraad in faillissement. In de tweede zaak nam het Europees Hof van Justitie aan dat de regels voor overgang van onderneming van toepassing zijn bij een overname na faillissement in een prepacksituatie. In dit artikel worden onder meer beide zaken besproken en ook de mogelijke impact die zij zullen hebben op de positie van werknemers in faillissement.
Evaluar para aprender : hacia una dimensión comunicativa, formativa y motivadora de la evaluación
Authors: Abenza Hernández Luis
Published: July 2018

Pretendemos configurar un marco para la evaluación delimitado en base a aspectos claves como la comunicación, la motivación y la formación, para lo cual partimos de las ideas, experiencias y expectativas que sobre evaluación tiene el profesorado en formación de tal forma que se puedan establecer conexiones significativas y operativas entre sus concepciones y el sentido de la evaluación de nuestra propuesta.
Aprender competencias en una propuesta para la enseñanza de los circuitos eléctricos en Educación Primaria
Authors: De Pro Antonio , Rodríguez Moreno Javier
Published: July 2018

Resumen El objetivo central del trabajo es el diseño de una unidad didáctica sobre el Estudio de los Circuitos Eléctricos en la Educación Primaria, su puesta en práctica, y la valoración de algunos de los efectos producidos al aprendizaje del alumnado. Tras revisar algunas propuestas y aportaciones en la relación con esta temática, decidimos adaptar la planteada por [...] (2008) para esta etapa educativa. Una vez elaborados los materiales, pretendimos dar respuesta a tres cuestiones: a)¿Cuáles eran los conocimientos y experiencias iniciales que tenían mis alumnos sobre los circuitos eléctricos? ¿Cómo considerarlos de cara a la puesta en práctica de la propuesta? b)¿Cómo se desarrollaron las actividades experimentales previstas? ¿Qué logros se obtuvieron, que dificultades se encontraron… en el desarrollo de las mismas? c)¿Qué efectos produce dicha propuesta en el alumnado en relación con el aprendizaje? ¿Y en relación con otros aspectos (valoración de lo realizado, participación…)? Los resultados ponen de manifiesto los logros de la propuesta utilizada y la persistencia de algunas dificultades derivadas del modelo de corriente eléctrica.
Un módulo instruccional para un aprendizaje significativo de la energía
Authors: Guruceaga Arantzazu , González Fermín
Published: July 2018

Se describe en este artículo una experiencia sobre el aprendizaje significativo del concepto energía a través de la aplicación de un módulo instruccional conceptualmente transparente, fundamentado en el marco teórico de Ausubel y Novak que enfatiza la herramienta del mapa conceptual como instrumento facilitador de un aprendizaje significativo. La implementación del módulo se realizó con alumnos/as de 2º de la ESO de un centro concertado de la comarca de Pamplona. El trabajo realizado muestra que como resultado de la instrucción realizada el alumnado presenta una evolución positiva en los indicadores del aprendizaje significativo en relación con el concepto  energía. Además, este estudio pone de manifiesto dificultades en algunos alumnos  para superar algunas concepciones erróneas sobre dicho concepto.
Enseñanza y aprendizaje de astronomía diurna en primaria mediante «secuencias problematizadas» basadas en «mapas evolutivos»
Authors: Navarro Pastor Manuel
Published: July 2018

Existe la imperiosa necesidad de mejorar la enseñanza de la ciencia en todas las etapas educativas, siendo el desarrollo de material curricular probado experimentalmente una de las estrategias ineludibles. Este escrito pretende mostrar, mediante el caso concreto de la astronomía diurna, como la metodología de “secuencias problematizadas” de carácter descriptivo y basadas en los “mapas evolutivos” del tema constituye una herramienta eficaz para acercar los niños a su entorno, desarrollar formas de pensar científicas, mejorar su actitud hacia la ciencia y sentar las estructuras cognitivas de carácter descriptivo necesarias para el aprendizaje de teorías explicativas en etapas posteriores.
Análisis de los niveles de comprensión de los objetos f’(a) y f’(x) de profesores de matemáticas.
Authors: Badillo Edelmira , Azcárate Carmen , Font Vicenç
Published: July 2018

En este artículo describimos los niveles de comprensión de la relación entre f’(a) y f’(x) de cinco profesores de matemáticas que desarrollaban la asignatura de matemáticas con alumnos de 16-18 años en diferentes centros educativos de Colombia. La teoría APOE, ampliada con aportaciones semióticas, se utiliza como marco teórico fundamental. Los cinco profesores contestaron a un cuestionario indirecto sobre la comprensión de f’(a) y f’(x) y, posteriormente, fueron entrevistados con viñetas. Los resultados muestran que la comprensión de estos dos macro objetos,  f’(a) y f’(x), puede estar relacionada con la estructura de los esquemas gráfico y algebraico de los mismos, y con los conflictos semióticos asociados.
Interactividad y atención a la diversidad en el aprendizaje de la estadística
Authors: Murillo Jesús
Published: July 2018

El objetivo de nuestra investigación es construir, ejemplificar y analizar los beneficios de una herramienta metodológica pensada para mejorar el éxito escolar en el aprendizaje de la Estadística en la educación secundaria obligatoria, trabajando con alumnos de diversificación curricular. En estos momentos hemos construido el sistema tutorial y hemos realizado una evaluación a través del test de BADYG renovado y una estadística de rendimientos mediante pruebas de control inicial y final. Con la información que estamos recogiendo  de los procesos y resolución de las actividades desarrolladas en el sistema tutorial diseñado, pretendemos construir los instrumentos de análisis correspondientes y proceder al estudio de casos y análisis correspondiente.