Search results for "Spatial"

showing 10 items of 2121 documents

The synergy of water quality and sea surface currents data in determining the spatio-temporal evolution of large-scale circulation features

2014

Chlorophyll-a (CHL-a) and Sea Surface Temperature (SST), amongst others, are proxies or indicators for water quality and can be easily retrieved synoptically and almost in near-real time through satellite remote-sensing. However, as they evolve in space and time in response to winds and currents, a full resolution of the temporal and spatial scales of these latters is required and their influence in shaping the distribution of water quality parameters needs to be assessed. While providing synoptic views and revealing mesoscale features, satellites suffer, indeed, from inadequate representation of sub-grid physical processes and lack of temporal resolution. Conventional point-wise measuremen…

Ocean dynamicsSea surface temperatureGeographyTemporal resolutionClimatologySea surface currents HF radars SST CHL-a MODISSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaOcean currentMesoscale meteorologySpatial variabilitySatellitePhysical oceanographyRemote sensingSPIE Proceedings
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Within-lake variability in carbon and nitrogen stable isotope signatures

2006

SUMMARY 1. We assessed spatial and temporal variation in carbon and nitrogen isotopic signatures in different compartments of a single lake ecosystem. Stable isotope analyses were made on samples of particulate organic matter (POM), zooplankton, periphyton, macrophytes, macroinvertebrates and fish collected from several locations throughout the ice-free period. 2. No spatial variation in d 13 Co rd 15 N values was found for pelagic samples of POM and zooplankton. However, pelagic d 15 N signatures increased steadily through the summer resulting in an almost 6& average increase in POM and zooplankton. A concurrent decrease in epilimnetic nitrate concentrations suggested that the increase in …

OceanographyEcologyStable isotope ratioLake ecosystemProfundal zoneSpatial variabilityPelagic zoneAquatic SciencePeriphytonBiologyZooplanktonMacrophyteFreshwater Biology
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Sistemi di orientamento nel latino di Plauto

2021

This paper investigates the spatial Frames of Reference (FoRs) in Old Latin within the framework of cognitive linguistics. Differently from modern romance languages, which are heavily based on the so-called relative FoR, ancient Indo-European languages such as Vedic and Homeric Greek did not make use of such an egocentric orientation system at their earliest stage, since the relation between FIGURE and GROUND was not specified by imposing an external deictic observer’s viewpoint. the aim of this study is to add the perspective of Old Latin, by focusing on the contexts of use of spatial terms of FRONT, BEHIND, LEFT, RIGHT in the comedies of Plautus. The results of this analysis are consisten…

Old Latin spatial FoRs Plautus comedies Indo-European perspectiveSettore L-LIN/01 - Glottologia E Linguistica
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Spatial patterns of disparity and diversity of the Recent cuttlefishes (Cephalopoda) across the Old World

2003

Aim Diversity and disparity metrics of all Recent cuttlefishes are studied at the macroevolutionary scale (1) to establish the geographical biodiversity patterns of these cephalopods at the species level and (2) to explore the relationships between these two metrics. Location Sampling uses what is known about these tropical, subtropical and warm temperate cephalopods of the Old World based on a literature review and on measurements of museum specimens. Some 111 species spread across seventeen biogeographical areas serve as basic units for exploring diversity and disparity metrics in space. Methods Landmarks describe the shape of the cuttlebone (the inner shell of the sepiids) and difference…

Old WorldEcologyRange (biology)Ecologyparasitic diseasesSpatial ecologyBiodiversitySpecies diversitySpecies richnessMacroevolutionBiologyEcology Evolution Behavior and SystematicsGlobal biodiversityJournal of Biogeography
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Cultural institutions as agents of urban and community regeneration in the (post-)pandemic city. The case of the «Laboratorio Zen Insieme» in Palermo

2022

Although all cities in the world have been affected by the COVID-19 pandemic, its impacts on the territories, yet to be understood, are unevenly distributed, revealing extremely varied imbalances depending on the places. However, it is clear that the virus and its variants have aggravated pre-existing socio-spatial inequalities, creating new ones and bringing attention back to those implications between space, planning, public health and citizenship that are at the origins of contemporary urbanism. In a reference framework in which the crisis is globalized but unequal and in the absence of a welfare system capable of responding to the urgencies of the most marginalized social contexts and g…

Olsen 2018Settore ICAR/21 - UrbanisticaSettore M-GGR/01 - GeografiaSacco and Blessi 2009). In the current (post-) pandemic context and through the lens of a southern European perspective the purpose of this article is to critically reflect about the role of culture as possible vehicle of urban and community regeneration. In particular we will focus on the activities of the no profit organization «Laboratorio Zen Insieme» in ZEN2 one of the last large popular and peripheral neighborhoods built in Palermo at the end of 80s in order to explore and understand how cultural practices work as agent of urban and social transformation capable of addressing emerging issues especially in the pandemic scenario we are experiencing. Thecasestudy has been conducted through analysis of documents participative observations (Honer and Hitzler 2015) and qualitative in-depth interviews with key actors involved in the conception organization and management of the activities carried out by Laboratorio Zen Insieme with representatives of local institutions and non-formal conversations with participants of the workshops heldin the neighborhood. The experience we narrate finds that cultural practices have re-conceptualized their design and functions as strategies of urban and community regeneration and at the same time have contributed to answer to emergent issues in developing proximity and local based strategies facing up to problems inherent civil rights educationalpoverty socio-spatial justice and have changed the image and identity of urban places they inhabit.In this sense the research provides a framework for development of strategies and legitimization for cultural practices and a point of discussionabouttheirrolein urban development.Although all cities in the world have been affected by the COVID-19 pandemic its impacts on the territories yet to be understood are unevenly distributed revealing extremely varied imbalances depending on the places. However it is clear that the virus and its variants have aggravated pre-existing socio-spatial inequalities creating new ones and bringing attention back to those implications between space planning public health and citizenship that are at the origins of contemporary urbanism. In a reference framework in which the crisis is globalized but unequal and in the absence of a welfare system capable of responding to the urgencies of the most marginalized social contexts and groups a response to the new social and individual needs has been offered by cultural institutions that play a role of territorial agency often independently or in the absence of political institutions. Far from the idea of entertainment and divertissement it is in fact increasingly clear how the practices of cultural innovation experimenting with various forms of action and participation can in some cases play a fundamental role in the processes of social cohesion and community building representing an antidote to the worsening of the phenomena of marginalization and socio-spatial inequalities within cities and territories (Colantonio and Dixon 2011
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Integration, Bewertung und Nutzung heterogener Datenquellen mittels semantischer Werkzeuge

2017

In diesem Artikel stellen wir unsere Forschung in der Integration von Geodaten in einen Semantic Web Kontext in unserem Projekt Semantic GIS vor. Zunächst möchten wir den Zweck und die Vorteile einer Integration und Interpretation von Daten in das Semantic Web beleuchten und anschließend unseren Integrationprozess bestehend aus Datengewin-nung, automatischer Interpretation, Qualitätssicherung und Provenance sowie den Datenzugriff erklären. Um die Anwendung unserer Forschung zu demonstrieren gehen wir auf zwei Anwendungsfälle in unserem Projekt ein: Die Bewertung von OpenStreetMap Daten und die Verbesserung des Katastrophenschutzes mittels semantischem Reasoning. Wir schließen den Artikel mi…

On- tologyR2RMLProvenance Keywords: GeodatenDatenqualitätLinked dataSemantificationOntologieNatural Language processingSDI[INFO] Computer Science [cs]Geospatial dataSemantifikationSemantisches WebProvenance[INFO]Computer Science [cs]Sprachverarbeitung natürlicher SprachenData QualitySemantic web
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The prevalence of onchocerciasis in Africa and Yemen, 2000-2018: a geospatial analysis.

2022

Abstract Background Onchocerciasis is a disease caused by infection with Onchocerca volvulus, which is transmitted to humans via the bite of several species of black fly, and is responsible for permanent blindness or vision loss, as well as severe skin disease. Predominantly endemic in parts of Africa and Yemen, preventive chemotherapy with mass drug administration of ivermectin is the primary intervention recommended for the elimination of its transmission. Methods A dataset of 18,116 geo-referenced prevalence survey datapoints was used to model annual 2000–2018 infection prevalence in Africa and Yemen. Using Bayesian model-based geostatistics, we generated spatially continuous estimates o…

Onchocerciasis; Geospatial model; Neglected tropical diseases;IvermectinYemenSettore MED/06 - Oncologia MedicaSettore MED/42 - Igiene Generale e ApplicataNigeriaBayes TheoremGeneral MedicineOnchocerciasisGhanaSettore MED/01 - Statistica MedicaGeneral & Internal MedicinePrevalenceHumansGeospatial model11 Medical and Health SciencesNeglected tropical diseasesBMC medicine
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Predicting the environmental suitability for onchocerciasis in Africa as an aid to elimination planning

2021

Recent evidence suggests that, in some foci, elimination of onchocerciasis from Africa may be feasible with mass drug administration (MDA) of ivermectin. To achieve continental elimination of transmission, mapping surveys will need to be conducted across all implementation units (IUs) for which endemicity status is currently unknown. Using boosted regression tree models with optimised hyperparameter selection, we estimated environmental suitability for onchocerciasis at the 5 × 5-km resolution across Africa. In order to classify IUs that include locations that are environmentally suitable, we used receiver operating characteristic (ROC) analysis to identify an optimal threshold for suitabil…

OncocercosisDecision AnalysisRC955-962Onchocerciasislaw.inventionGeographical LocationsMedical Conditions0302 clinical medicinelawArctic medicine. Tropical medicineMedicine and Health Sciences030212 general & internal medicineOnchocerca11 Medical and Health SciencesData ManagementbiologyPharmaceuticswc_695Enfermedades ParasitariasOnchocerciasi3. Good healthInfectious DiseasesGeographyTransmission (mechanics)Helminth InfectionsEngineering and TechnologyMass Drug AdministrationOnchocercaPublic aspects of medicineRA1-1270Management EngineeringCartographyHumanResearch ArticleNeglected Tropical DiseasesComputer and Information SciencesDrug Administration030231 tropical medicineDecision treewa_395Dermatologywc_765Environmentwc_885Research and Analysis MethodsSkin Diseases03 medical and health sciencesDrug TherapySDG 3 - Good Health and Well-beingDiagnostic MedicineTropical MedicineParasitic DiseasesmedicineHumansDisease EradicationSpatial analysisIvermectinData collectionReceiver operating characteristicData VisualizationDecision TreesPublic Health Environmental and Occupational Health06 Biological SciencesOnchocerciasis ; Elimination planning ; Africa ; Implementation units ; Public healthTropical Diseasesmedicine.diseasebiology.organism_classificationHealth CareROC CurvePeople and PlacesAfricaHealth StatisticsMorbidityOnchocerciasisScale (map)ForecastingPLOS Neglected Tropical Diseases
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215P Analysis of spatial heterogeneity of responses in metastatic sites with nivolumab in renal cell carcinoma

2020

Oncologybusiness.industryRenal cell carcinomaCancer researchMedicineHematologyNivolumabbusinessmedicine.diseaseSpatial heterogeneityAnnals of Oncology
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Spatial risks and complex systems: methodological perspectives

2007

Research on risk and industrial catastrophes question the complexity theories. Besides the concepts of complexity which lead us to reconsider concepts of risk, hazard and vulnerability, we propose to think about more practical aspects, for example the modelling of human behaviour in crisis situations. The link between concepts as critical self-organization, emergence, bifurcation, and the methods in the Distributed Artificial Intelligence (DAI) used to model them is however difficult. In this paper, we present ongoing analysis on the key concepts of risk science, such as hazards and catastrophes. We propose to enrich them with complex systems theories. First, we present methodological persp…

Operations researchComputer science[SHS.GEO] Humanities and Social Sciences/Geographymedia_common.quotation_subject0211 other engineering and technologies0507 social and economic geographyComplex systemVulnerabilitypanicContext (language use)02 engineering and technologyIndustrial Accident[ SHS.GEO ] Humanities and Social Sciences/Geographycomplex systemsresilienceComputingMilieux_MISCELLANEOUSmedia_commonriskcomplexity theoriesStructure (mathematical logic)human behaviour05 social sciencesSpatial risks021107 urban & regional planning[SHS.GEO]Humanities and Social Sciences/GeographyHazardRisk perceptionRisk analysis (engineering)Psychological resilience050703 geography
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