Search results for "801"

Introduction to Analyzing Digital Discourse: New Insights and Future Directions

2018

In the introduction, we have embedded our overview of the contributions to this volume within a narrative that reviews past and extant research on language and digital communication. We have taken special care to highlight the ways in which each chapter advances the field. In order to do so, we have carefully identified new methodological and empirical insights put forth by the different authors. Specifically, we have highlighted the steps contributors to this volume have taken to help establish the so-called third wave of research, and these steps point to future directions in which to expand the field of language and digital communication.

(Im)politeness in Service Encounters

2017

This chapter examines sociopragmatic research on commercial service encounters. It offers a precis of the studies that have utilised service encounters as a vehicle to examine (Im)politeness manifestations. It addresses the methodological advantages of the service encounter as a relatively formalised interactional site in which sociability and efficiency are managed, hence as a locus for the emergence of (Im)politeness orientations. The chapter traces the evolution of (Im)politeness research and discusses the complexities of capturing (Im)politeness practices in transformation: from face-to-face and telephone-mediated encounters to newer communicative arenas resulting from technological adv…

Semi-automated annotation of page-based documents within the Genre and Multimodality framework

2016

This paper describes ongoing work on a tool developed for annotating document images for their multimodal features and compiling this information into a corpus. The tool leverages open source computer vision and natural language processing libraries to describe the content and structure of multimodal documents and to generate multiple layers of XML annotation. The paper introduces the annotation schema, describes the document processing pipeline and concludes with a brief description of future work.

Dealing with Culture in Schools: A Small-Step Approach Towards Anti-racism in Finland

2017

This chapter discusses anti-racism education by focusing on how culture is used in educational discourses in Finland. More and more studies highlight the pervasive use of culture as a substitute for race, urging scholars to explore how and why cultural claims are made relevant (Breidenbach and Nyiri 2009; Piller 2011). Culture is present in numerous subjects (e.g. religion, literature, history, languages) and anti-racism education should therefore be understood from a holistic perspective. This chapter focuses on the Finnish context which is relevant to examine for two main reasons. First, Finnish school system is globally represented as high quality. Second, the new national curriculum, wh…

Prácticas culturales y espacios públicos como lugares de interacción social y política. Un análisis de activismo y de crítica festiva en Barcelona y …

2021

espanolEl desarrollo de las grandes ciudades se ha constituido como un fenomeno global, reduciendo las posibilidades de generar convivencia en el espacio social. La busqueda actual por conectar la escala micropolitica de estos espacios con sus habitantes reconfigura el sentido de pertenencia a la ciudad. Esta aspiracion, muchas veces, desemboca en formas activas de desobediencia social en el espacio publico o, por contraposicion, de acciones que perpetuan la reproduccion de practicas culturales conservadoras. Desde esta mirada el presente trabajo se propone analizar algunas practicas culturales que ubican la participacion en el espacio publico como protagonista. Por un lado, acciones artivi…

La cuestión del reconocimiento en América Latina. Perspectivas y problemas de la teoría político-social de Axel Honneth

2018

Prototyping Sentinel-2 green LAI and brown LAI products for cropland monitoring.

2022

Abstract For agricultural applications, identification of non-photosynthetic above-ground vegetation is of great interest as it contributes to assess harvest practices, detecting crop residues or drought events, as well as to better predict the carbon, water and nutrients uptake. While the mapping of green Leaf Area Index (LAI) is well established, current operational retrieval models are not calibrated for LAI estimation over senescent, brown vegetation. This not only leads to an underestimation of LAI when crops are ripening, but is also a missed monitoring opportunity. The high spatial and temporal resolution of Sentinel-2 (S2) satellites constellation offers the possibility to estimate …

Crop nitrogen monitoring: Recent progress and principal developments in the context of imaging spectroscopy missions

2020

Abstract Nitrogen (N) is considered as one of the most important plant macronutrients and proper management of N therefore is a pre-requisite for modern agriculture. Continuous satellite-based monitoring of this key plant trait would help to understand individual crop N use efficiency and thus would enable site-specific N management. Since hyperspectral imaging sensors could provide detailed measurements of spectral signatures corresponding to the optical activity of chemical constituents, they have a theoretical advantage over multi-spectral sensing for the detection of crop N. The current study aims to provide a state-of-the-art overview of crop N retrieval methods from hyperspectral data…

2017

AbstractFuture changes in the structure of daily rainfall, especially the number of rainy days and the intensity of extreme events, are likely to induce major impacts on rain-fed agriculture in the tropics. In Africa this issue is of primary importance, but the agreement between climate models to simulate such descriptors of rainfall is generally poor. Here, we show that the climate models used for the fifth assessment report of IPCC simulate a marked decrease in the number of rainy days, together with a strong increase in the rainfall amounts during the 1% wettest days, by the end of the 21st century over Southern Africa. These combined changes lead to an apparent stability of seasonal tot…

The impact of urban development on aquifers in large coastal cities of West Africa: Present status and future challenges

2018

Abstract This paper investigates the coastal cities of Abidjan, Cotonou, Lagos and Douala in West Africa. Published data on these areas were aggregated in order to compare the urban development of some African huge cities and assess their impacts on groundwater. Those urban centers have experienced an exponential demographic expansion since the 1950s, with increased population densities and a geographical coverage expansion as well. The Continental Terminal aquifer, major groundwater resource taped in this region by the national water companies and local populations, shows a continuous downward trend in piezometric levels. Concerning water quality, the evolution up to the current state (sal…