CRPC-DB – A Discourse Bank for Portuguese

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LDM-PT - A Portuguese Lexicon of Discourse Markers

The Lexicon of Discourse Markers (LDM-PT) provides a set of lexical items in Portuguese that have the function of structuring discourse and ensuring textual cohesion and coherence at intrasentential and inter-sentential levels. Each connective is associated to the set of its rhetorical senses, following the PDTB typology.info:eu-repo/semantics/publishedVersio

Some considerations on the use of main verbs to express rhetorical relations

Rhetorical relations are typically expressed by discourse structuring devices that ensure textual cohesion and coherence. Resources such as the PDTB target specifically the annotation of these devices, while describing alternative lexicalizations of such relations (AltLex). Our preparatory work to develop a discourse treebank for Portuguese in the PDTB framework has provided ground for some considerations regarding the status, in intra-sentential coherence, of main verbs that internally carry a causative meaning. We have first focused on the annotation of the rhetorical senses Reason, Result, Pragmatic_justification as expressed explicitly by discourse structuring devices (conjunctions, adverbs, phrases and prepositions), taken as elements that express a two-place semantic relation filled by propositional arguments. However, these relations are also frequently marked by other devices (AltLex).info:eu-repo/semantics/publishedVersio

From mechanical to chemical impact of anchoring in seagrasses: the premises of anthropogenic patch generation in Posidonia oceanica meadows

Intensive anchoring of leisure boats in seagrass meadows leads to mechanical damages. This anthropogenic impact creates bare mat patches that are not easily recolonized by the plant. Several tools are used to study human impacts on the structure of seagrass meadows but they are not able to assess the indirect and long term implication of mechanical destruction. We chose to investigate the possible changes in the substrate chemistry given contrasted boat impacts. Our observations show that hydrogen sulfide concentrations remain high at 15 and 20 m depth (42.6 µM and 18.8 µM) several months after the highest period of anchoring during the summer. Moreover, our multidisciplinary study reveals that anchoring impacts of large boats at 15 and 20 m depth can potentially change the seascape structure. By taking into account both structural and chemical assessments, different managing strategies must be applied for coastal areas under anthropogenic pressures.STARE-CAPME

Sound production by dusky grouper Epinephelus marginatus at spawning aggregation sites

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Modélisation de scénarios pédagogiques collaboratifs

Cet article part du besoin d'exprimer des scénarios d'apprentissage collaboratif par les enseignants animant des classes virtuelles afin de favoriser la réutilisation et le partage des pratiques pédagogiques. Il propose une démarche conduite par les modèles conformément aux préconisations du Model Driven Architecture de l'OMG. Il présente un méta-modèle basé sur IMS-LD mais enrichi pas les concepts du modèle de participation afin de capturer la richesse des interactions inhérentes aux activités collaboratives. Un modèle de scénario est exprimé à l'aide de ce méta-modèle hybride. Ce modèle sera instancié et pourra être à terme opérationnalisé sur un Espace Numérique de Travail en ligne

Evaluación de capturas de Homarus gammarus (Crustacea: Decapoda: Nephropidae) y potencial en pesquerías mediterráneas artesanales

The aim of this study was to obtain a better understanding of the exploitation pattern of the European lobster population in a fully representative small-scale fishery of the Mediterranean (Corsica, France) and to collect initial biological information on this species. Data were collected by scientific observers on board net fishing vessels for eight consecutive years from 2006 until 2013. Average annual catches were estimated at 6.7 t. Length frequencies indicated that exploitation focused on large individuals. Catch per unit of effort varied significantly as a function of month, fishing area and depth. Our approach to catch distribution revealed spatial heterogeneity with large catches in the south area. A fishery-independent survey was performed in 2013 and 2014 in west Cap Corse using 540 lobster traps; it showed an extremely low catch rate, confirming the low abundance for this area. This study provided new biological knowledge of a little-studied species in the Mediterranean.El objetivo de este estudio fue el de obtener una mejor comprensión del patrón de explotación y colectar datos iniciales de las poblaciones de bogavante europeo en una pesquera artesanal representativa del Mediterráneo (Córcega, Francia). Los datos fueron colectados por observadores científicos a bordo de embarcaciones de pesca durante 8 años consecutivos, de 2006 a 2013. Las capturas anuales fueron estimadas a 6,7 toneladas. La frecuencia de las tallas indica que la explotación se concentra en los individuos de gran tamaño. La CPUE varía de manera significativa en función del mes, la zona de pesca y la profundidad. La distribución de las capturas revela que hay una heterogeneidad espacial, con capturas de gran tamaño en la zona sur. Un monitoreo pesquero independiente fue llevado a cabo durante 2013 y 2014 en Cap Corse occidental empleando 540 trampas; éste mostró una tasa de captura extremadamente baja, lo que confirma la escasez de bogavante europeo en esta área. Este estudio aportó nuevos conocimientos a la biología de esta especie poco estudiada en el Mediterráneo

Optimized approach to retrieve information on the tropospheric and stratospheric carbonyl sulfide (OCS) vertical distributions above Jungfraujoch from high-resolution FTIR solar spectra

Carbonyl sulfide (OCS), which is produced in the troposphere from both biogenic and anthropogenic sources, is the most abundant gaseous sulfur species in the unpolluted atmosphere. Due to its low chemical reactivity and water solubility, a significant fraction of OCS is able to reach the stratosphere where it is converted to SO2 and ultimately to H2SO4 aerosols (Junge layer). These aerosols have the potential to amplify stratospheric ozone destruction on a global scale and may influence Earth’s radiation budget and climate through increasing solar scattering. The transport of OCS from troposphere to stratosphere is thought to be the primary mechanism by which the Junge layer is sustained during nonvolcanic periods. Because of this, long-term trends in atmospheric OCS concentration, not only in the troposphere but also in the stratosphere, are of great interest. A new approach has been developed and optimized to retrieve atmospheric abundance of OCS from high-resolution ground-based infrared solar spectra by using the SFIT-2 (v3.91) algorithm, including a new model for solar lines simulation (solar lines often produce significant interferences in the OCS microwindows). The strongest lines of the nu3 fundamental band of OCS at 2062 cm-1 have been systematically evaluated with objective criteria to select a new set of microwindows, assuming the HITRAN 2004 spectroscopic parameters with an increase in the OCS line intensities of the nu3band main isotopologue 16O12C32S by 15.79% as compared to HITRAN 2000 (Rothman et al., 2008, and references therein). Two regularization schemes have further been compared (deducted from ATMOS and ACE-FTS measurements or based on a Tikhonov approach), in order to select the one which optimizes the information content while minimizing the error budget. The selected approach has allowed us to determine updated OCS long-term trend from 1988 to 2009 in both the troposphere and the stratosphere, using spectra recorded on a regular basis with Fourier Transform Infrared spectrometers (FTIRs), under clear-sky conditions, at the NDACC site (Network for the Detection of Atmospheric Composition Change, visit http://www.ndacc.org) of the International Scientific Station of the Jungfraujoch (Swiss Alps, 46.5°N, 8.0°E, 3580m asl). Trends and seasonal cycles deduced from our results will be compared to values published in the literature and critically discussed. In particular, we will confirm the recent change in the OCS total column trend, which has become positive since 2002 before undergoing a slowing down over the last years