Search results for " pattern"

showing 10 items of 2245 documents

Automated Checking of Flexible Mathematical Reasoning in the Case of Systems of (In)Equations and the Absolute Value Operator

2021

We present an approach and a tool for automatically providing feedback on solutions that involve complicated reasoning patterns. Currently the tool supports linear systems of equations and inequations that may also contain the absolute value operator and a restricted form of rational functions. This suffices for designing problems that are laborious to solve with standard mechanical procedures, but much easier using short-cuts that students may find by creative thinking. Earlier research has found that struggling with important mathematics promotes conceptual development. Our goal is to encourage students to such struggling. A crucial feature is to give them great freedom to choose the path…

päättelymatematiikkaComputer sciencepalauteElementary University MathematicsAbsolute value (algebra)matemaattinen ajatteluMathematical reasoningAutomatic FeedbackHigher Order Thinking SkillsAlgebraOperator (computer programming)High School Mathematicsopetusohjelmat (tietokoneohjelmat)tietokoneavusteinen oppiminenjärkeilyeLearning SoftwareNon-trivial Reasoning Patterns
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Subtropical streams harbour higher genus richness and lower abundance of insects compared to boreal streams, but scale matters

2018

Aim: Biological diversity typically varies between climatically different regions, and regions closer to the equator often support higher numbers of taxa than those closer to the poles. However, these trends have been assessed for a few organism groups, and the existing studies have rarely been based on extensive identical surveys in different climatic regions. Location: We conducted standardized surveys of wadeable streams in a boreal (western Finland) and a subtropical (south-eastern Brazil) region, sampling insects identically from 100 streams in each region and measuring the same environmental variables in both regions. Taxon: Aquatic insects. Methods: Comparisons were made at the scale…

regional diversity0106 biological sciencespurotBiodiversitySTREAMSSubtropics010603 evolutionary biology01 natural sciencesMACROINVERTEBRATE COMMUNITIESlow-high latitude comparisonnutrientsAbundance (ecology)stream insectsrank abundance1172 Environmental sciencesEcology Evolution Behavior and SystematicsGLOBAL PATTERNSEcologyEcologySPECIES RICHNESSBEETLES COLEOPTERA010604 marine biology & hydrobiologysubtrooppinen vyöhykealpha diversity15. Life on landBETA DIVERSITYlow–high latitude comparisonEVOLUTIONbiodiversiteettiLATITUDINAL DIVERSITY GRADIENTENVIRONMENTAL-CONDITIONSboreaalinen vyöhykeGeographyBoreal13. Climate action1181 Ecology evolutionary biologyhyönteisetta1181BIODIVERSITYAlpha diversityRank abundance curveSpecies richnessORGANISMSJournal of Biogeography
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Biało-czarny świat Ervina Goja

2011

The author takes up the language Ervin Goj’s poetry, a regional lachian poet who has written his poems between the years 1931-1977 under the pen name Óndra Łyhorsky. She analyses the meaning of two colours, namely white and black, which in the European culture symbolize the opposition light – dark, good – bad: white symbolizes innocence, truth, purity, simplicity, honesty, while black symbolizes evil, falsehood, nothingness, mourning, atonement. It is associated with everyday human experience which is reflected in the language and is connected with the following patternsprototypes: white – day (bílý den), black – night (černá noc), for example: bílá holubice, bílé světlo, bílá vrána, černé …

regional lachian poetrythe symbolism of coloursprototypical patterns of black and whiteUsta ad Albim Bohemica
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ITKA111 Oliosuuntautunut analyysi ja suunnittelu

2009

requirements analysisinformation systems designuse casesohjelmistovaatimuksetohjelmistoarkkitehtuurioliokeskeisyyskäyttötapauksetsoftware requirementsobject orientationvaatimusanalyysitietojärjestelmien suunnittelusuunnittelumallitdesign patterns
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Understanding the health care pattern of homeless children through their residential journey

2021

En Île-de-France, l’hôtel social est souvent mobilisé par les associations pour héberger des familles, principalement migrantes et accompagnées d’enfants de moins de 6 ans. À cet âge, l’enfant nécessite un suivi de soins régulier auprès des professionnels pédiatriques. Nous supposons que ce suivi est dépendant de la mobilité résidentielle inhérente au système d’hébergement hôtelier. Cet article a pour objectif de reconstituer le parcours résidentiel des familles et le parcours de soins de leurs enfants et de saisir comment ces derniers s’influencent. La démonstration repose sur 18 entretiens biographiques spatialisés réalisés entre 2013 et 2016 auprès des familles sans logement hébergées en…

residential instability[SHS.SOCIO]Humanities and Social Sciences/Sociologyimmigrants[SHS.SOCIO] Humanities and Social Sciences/Sociologyhealthcare patternfamilles sans logementmigrantssanté infantileÎle-de-FranceParis Regionhomeless familiesinstabilité résidentielleparcours de soinschild healthComputingMilieux_MISCELLANEOUSPopulations vulnérables
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Optimal Resource Allocation in Multi-Hop Networks: Contention vs. Scheduling

2014

CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is actually the most used method in ad-hoc networks for transmitting on a contending medium, even if it shows poor performance in presence of hidden nodes. To increase performance, we propose an algorithm that combines CSMA and TDMA (Time Division Multiple Access) approaches. The adopted solution consists of grouping contending nodes in non-interfering subsets and granting a different numbers of time slots to different groups, while using the CSMA to manage medium access among nodes belonging to the same subset. An optimization procedure to assign the time slots to each subset of nodes and to find an equilibrium between contention …

resource allocation; multi hop neworksSettore ING-INF/03 - TelecomunicazioniComputer sciencebusiness.industryDistributed computingMulti-frequency time division multiple accessComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSTime division multiple accessresource allocationComputer Science Applications1707 Computer Vision and Pattern Recognitionmulti hop neworksHop (networking)Carrier-sense multiple accessScheduling (computing)resource allocation multi hop neworksComputer Networks and CommunicationSettore ING-INF/04 - AutomaticaControl and Systems EngineeringChannel access methodbusinessInformation SystemsComputer network
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Investigation of a Gravel-Bed River’s Pattern Changes: Insights from Satellite Images

2021

Changes in river pattern have been documented in the literature. The recognition of islands and vegetated patches, which is indicative of the evolution processes, requires simultaneous information at different points and at different times and field studies are still difficult and scarce. The present work, focusing the attention on a gravel-bed river, explores the possibility to conduct a first-step pattern changes analysis by identifying the evolution of the morphological features and taking information of islands and vegetated patches from satellite images easily available from Google Earth. The study is conducted by combining the information taken from both the satellite images and the f…

river pattern010504 meteorology & atmospheric sciencesriverFlow (psychology)Flux010502 geochemistry & geophysicslcsh:Technology01 natural sciencesDeposition (geology)Settore ICAR/01 - Idraulicalcsh:ChemistryGeneral Materials Sciencelcsh:QH301-705.5Instrumentation0105 earth and related environmental sciencesFluid Flow and Transfer Processeslcsh:TProcess Chemistry and TechnologyGeneral EngineeringSedimentvegetated patcheVegetationpredictionlcsh:QC1-999Field (geography)Computer Science Applicationsimagesmonitoringlcsh:Biology (General)lcsh:QD1-999lcsh:TA1-2040morphological evolutionSatellitePhysical geographylcsh:Engineering (General). Civil engineering (General)Sediment transportlcsh:PhysicsGeologyApplied Sciences
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Contributions à l’imagerie polarimétrique et à ses applications en vision pour la robotique

2019

Ce mémoire présente le bilan de l'ensemble de mes travaux de recherche effectués de septembre 2006 à juin 2019 au sein de l'équipe Creusotine du laboratoire Le2i devenue équipe Vibot ERL CNRS 6000 depuis janvier 2018. Les principales activités de recherche que j'ai menées au cours de ces 10 dernières années autour de l'imagerie polarimétrique, de la vision omnidirectionnelle et de leurs applications en vision pour la robotique seront particulièrement détaillées dans ce document. Elles seront présentées selon deux grandes parties : la première concernera plutôt l'aspect mise en œuvre et calibrage des caméras et la seconde se concentrera sur les applications potentielles en vision pour la rob…

robotics[INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV][INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing[INFO.INFO-TI] Computer Science [cs]/Image Processing [eess.IV][INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing[INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV][INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Polarimetric imaging systemcomputer visionImagerie polarimétriquevision pour la robotique
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La formation du comportement de plainte chez le consommateur: recherche exploratoire chez des usagers de restaurants

2008

La investigación que se presenta aborda el proceso de formación del comportamiento de queja del consumidor. El objetivo general es profundizar en la naturaleza de este tipo de respuesta a la insatisfacción, describiendo su formación a partir de la contribución de un conjunto de variables investigadas en la literatura. Partiendo de que el comportamiento de queja agrupa tres tipos de respuestas (de queja, a terceras partes y privadas), analizamos el efecto que tiene el nivel de insatisfacción, la probabilidad de éxito de la queja, la importancia de la situación y las actitudes hacia la queja. Las relaciones causales estudiadas entre estos determinantes y los comportamientos de queja han permi…

réponses à l´insatisfactionrespostas à insatisfaçãoSatisfaction/insatisfactionSatisfacción/insatisfaccióncomportamiento de quejarestaurantscomportamento de queixaresponses to being unsatisfiedSatisfaction/being unsatisfiedrestaurantesrestaurantcomplaint patternSatisfação/insatisfaçãorespuestas a la insatisfaccióncomportement de plainte
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Contributions à l'analyse et à l'interprétation des images : Extraction et représentation de caractéristiques

2016

Ce mémoire, rédigé en vue de l'obtention de l'Habilitation à Diriger des Recherches (HDR), offre un aperçu des travaux de recherche et d’encadrement que j’ai pu mener depuis l'obtention de mon doctorat. Il montre la diversité des champs d’application et de recherche (en vision et en imagerie médicale) que j’ai pu couvrir , ainsi que mon implication dans l’encadrement doctoral.Mes activités de recherche se divisent en deux grandes parties. D'une part, l'analyse de scènes dynamiques, à savoir la détection de regions d'intérêt dans des séquences d'images, pour réduire la taile des données à traiter, et la détection et le suivi d'objets mobiles à l'aide de caméras de diverses natures (perspecti…

rétinopathie diabétique[INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV][INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]imagerie OCTObject tracking[ INFO.INFO-CV ] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]Visual saliency detectionAttention visuellesuivi d'objetsDiabetic retinopathy screeningOCT retinal imaging
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