Search results for "edge"
showing 10 items of 3866 documents
Semantics knowledge management for the 3D architectural reconstruction of building objects
2010
International audience; This paper presents the framework of an ongoing semantics knowledge management practice. The practice combines geometrical analysis of point cloud and semantic rules to detect 3D building objects for the purpose of achieving computational correctness and efficiency. We assume that improvement in the form of well organized classification (CLA) and order (ORD) is a solution. Statically related knowledge is classified as definition, partial knowledge and ambiguous knowledge and formally revealed with transitions between CWA (closed world assumption) and OWA (open world assumption). To achieve the correctness, formalization is proposed for the validation of the rules thr…
Managing semantics knowledge for 3D architectural reconstruction
2010
International audience; this work aims at bound geometrical detection of 3D objects from a point cloud using semantic descriptors to improve reusability of architectural building reconstruction and aid automatic reasoning in building information modeling (BIM). Based on exploring cognitive origins of spatial semantics representations, semantics conceptualization and classification is proposed for formal management of 3D architectural objects. The knowledge classification composes definition, partial knowledge and ambiguous knowledge, and is formalized with transformations among closed world assumption (CWA) and open world assumption (OWA). Systemic case study is conducted on a simplified bu…
Real-time implementation of counting people in a crowd on the embedded reconfigurable architecture on the unmanned aerial vehicle
2020
The crowd counting task is an important research problem. Now more and more people are concerned about safety issues. Considering the scenario of a crowded scene: a population density system analyzes the crowds and triggers a warning to divert the crowds when their population density exceeds a normal range. With such a system, the incident of the Shanghai New Year's stampede will not happen again. The most difficult problem of population counting at present: On the one hand, in the densely populated area, how to make the model distinguish human head features more finely, such as head overlap. The second aspect is to find a small-scale local head feature in an image with a wide range of popu…
Formalizing Semantic of Natural Language through Conceptualization from Existence
2011
International audience; We propose an outline of an approach to formalize semantic from conceptualization for both natural language (NL) and logic expression mechanisms. This goes beyond the level of discussions at conceptual level which has to either end in conscious/unconscious relativity of understanding or subjective enforcement in the form of definitions instead of expected objective semantic. This approach supports to view from a pure mathematical perspective, and explore and locate the fundamental problems. The semantic formalization mechanism realizes the integration of problem description and the solution expression at absolute semantic level. So a problem describing process is equ…
OntoVersionGraph : a change management methodology dedicated to formal ontologies and their user views in a collaborative context
2014
The world changes over time, impacting the knowledge of every subdomain it contains. Therefore systems describing the knowledge of a certain domain should be able to consider changes occurred to keep its knowledge representation up-to-date. Formal ontologies are one of them: they explicitly and formally represent the knowledge of a domain in all its forms and modes of existence. Collaboratively developed, a formal ontology allows the domain users to understand each other by sharing the same terminology despite the different assumptions they have on the domain conceptualization. However, due to its completeness, the complexity of its conceptualization can sometimes make the domain knowledge …
Dynamics of copper and zinc sedimentation in a lagooning system receiving landfill leachate.
2013
9 pages; International audience; This study characterises the sediment dredged from a lagooning system composed of a settling pond and three lagoons that receive leachates from a municipal solid waste (MSW) landfill in France. Organic carbon, carbonate, iron oxyhydroxides, copper (Cu) and zinc (Zn) concentrations were measured in the sediment collected from upstream to downstream in the lagooning system. In order to complete our investigation of sedimentation mechanisms, leachates were sampled in both dry (spring) and wet (winter) seasonal conditions. Precipitation of calcite and amorphous Fe-oxyhydroxides and sedimentation of organic matter occurred in the settling pond. Since different di…
Savoirs, représentations et comportements des réunionnais en matière de santé et d'environnement 18 mois après l'épidémie de chikungunya
2009
The outbreak of Chikungunya in Reunion in 2005/2006 surprised by its intensity and by the appearance of serious forms. It has left health professionals and relatively poor populations facing the lack of appropriate treatment. From the example of Chikungunya, the general objective of our multidisciplinary research was to study how two types of factors interact in the management of a vector-based disease: those related to representations and knowledge of the disease, and those related to to the perception of the environment. In this poster, we present the results of a questionnaire survey conducted in November 2007 among the inhabitants of a district of Ravine des Cabris (Commune of St Pierre…
DRADEM campaign - 2016 July - Scientific report
2016
The DRADEM campaign was performed from July 9th to 21th 2016 on board the Pourquoi Pas?, in the Exclusive Economic Zones of Suriname and French Guyana. This campaign belongs to a program dedicated to geological investigations of the Demerara plateau, following the GUYAPLAC (2003) and IGUANES (2013) campaigns, and before the MARGATS campaign (2016). The aims of the DRADEM campaign were to map the continental slope of the transform margin north of the Demerara plateau, and to dredge the rocks outcropping in the slope.We completed the bathymetric mapping of the continental slope, including part of the edged of the Demerara plateau. These new bathymetric data confirm the segmentation of the tra…
Towards the improvement of food flavour analysis: Modelling chemical and sensory data and expert knowledge integration
2019
International audience
Intérêt d'aménagements paysagers pour la biodiversité : exemple d'ingénierie agroécologique sur le domaine expérimental d'Epoisses (Inra Dijon)
2013
The biodiversity conservation is one of the major agricultural issues of the XXIst century. The intensification of agriculture and the redesign of the agricultural landscape (grouping of fields, …) lead to huge decreases or damages of semi-naturals habitats, known to promote biodiversity at the farm and the landscape scale, and now recognised as “topographic surface equivalence” in France.In the experimental site of Epoisses (INRA of Dijon), a study to design the landscape elements in favour of the biodiversity has been initiated. Improving the management of existing habitats (woods, hedges, ditches, sown grass margin strips), establishing hedges, flower strips, redesigning the field organi…