Search results for "APR"

showing 10 items of 2648 documents

Problemas históricos y dificultades de los estudiantes en la conceptualización de sustancia y compuesto químico.

2007

Este trabajo ofrece un análisis histórico sobre los problemas que tuvo que resolver la ciencia hasta llegar a la construcción de los conceptos macroscópicos de sustancia y compuesto químico en el contexto de la teoría daltoniana. Por otra parte, en él se muestran algunas de las dificultades de comprensión que estos conceptos ofrecen a los estudiantes. Para determinarlas, se realiza un estudio transversal con alumnos de 15 a 18 años, lo que permite evaluar el signifi cado que otorgan a la idea de sustancia, al tiempo que se constata la necesidad de su comprensión para poder entender los cambios químicos. Por último, se plantea la existencia de ciertas semejanzas entre las ideas sobre la comp…

AprenentatgeQuímicaEducació InvestigacióCiència Ensenyament
researchProduct

Modelling in Physics: A matter of experience?

2012

This study is focused on analyzing experimental results obtained due the use of different types of problem statements. It analyzes characteristics of problem-solving processes in subjects who have different levels of experience in solving physics problems. The problem-solving process is assumed as a process of modeling where different levels of representations are built. It is proposed a comprehension model for Physics problem-solving that assumes the existence of three levels of representation with different ontological elements and different levels of abstraction: A Situation Model (referential, non-abstract world representation of objects and events), a Conceptual-Physics Model (abstract…

AprenentatgeSolució de problemesCiència Ensenyament
researchProduct

Ingredientes metodológicos para construir agencia en la formación de los futuros profesionales de la intervención social

2022

Formar a los/as profesionales en la intervención social exige un plus en la atención a las competencias transversales que son sustantivas para la condición de “arte” que exigen las profesionales de lo social. En definitiva, poner la mirada en “ser” desde el “hacer”, en la medida que la experiencia educativa se convierte en sí misma en el escenario para construirnos como sujetos-agencia, adquirir el poder desde el espacio relacional y, construir ciudadanía. El presente artículo se centra en experiencias educativas orientadas desde los Ciclos Formativos de Integración Social, y en concreto el trabajo por proyectos, con el ánimo de sistematizar y visibilizar aquellos ingredientes metodológicos…

AprenentatgeTreball social amb els jovesPedagogíaIntegració social
researchProduct

Conviviencia i aprenentatge

2008

Aprenentatge[SHS.EDU] Humanities and Social Sciences/EducationConviviencia
researchProduct

Dificultades algebraicas en la resolución de problemas por transferencia

2007

La enseñanza de resolución de problemas en ciencias y matemáticas se realiza en general mediante estrategias de transferencia (transfer): se resuelve y explica un conjunto de problemas y después se pide a los estudiantes que resuelvan otros problemas análogos a los ejemplos trabajados. Los profesores de Secundaria con frecuencia asumen que las relaciones analógicas entre los problemas resueltos y los problemas propuestos son sencillas de comprender y establecer, y atribuyen el fracaso a la falta de dominio de los procedimientos matemáticos de resolución. En este trabajo se realiza un experimento para probar si esta atribución causal es adecuada o no. Los resultados demuestran que la causa p…

AprenentatgeÀlgebraSolució de problemes
researchProduct

First stages of microsporere programming to embryogenesis through anther culture in Prunus armeniaca L.

2011

6 páginas, 3 figuras, 2 tablas -- PAGS nros. 152-157

ApricotMicrospore embryogenesisfungiStamenfood and beveragesEmbryoPlant ScienceBiologymedicine.disease_causebiology.organism_classificationPrunus armeniacaSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeTissue cultureMicrosporePollenBotanymedicineDoubled haploidyCytochemistryCell structurePloidyAgronomy and Crop ScienceEcology Evolution Behavior and SystematicsApricot Cell structure Cytochemistry Microspore embryogenesis
researchProduct

Induction of pollen embryogenesis in seven cultivars of Prunus armeniaca l.

2010

6 páginas -- PAGS nros. 273-278

ApricotfungiStamenEmbryoHorticultureBiologybiology.organism_classificationmedicine.disease_causeGenetic analysisPrunus armeniacaHorticultureTissue culturemedicine.anatomical_structureMicrosporePollenBotanymedicinemicrospore embryogenesisCytochemistryGameteCell structuremicrospore embryogenesis apricot cell structure cytochemistry.
researchProduct

Sequential Mining Classification

2017

Sequential pattern mining is a data mining technique that aims to extract and analyze frequent subsequences from sequences of events or items with time constraint. Sequence data mining was introduced in 1995 with the well-known Apriori algorithm. The algorithm studied the transactions through time, in order to extract frequent patterns from the sequences of products related to a customer. Later, this technique became useful in many applications: DNA researches, medical diagnosis and prevention, telecommunications, etc. GSP, SPAM, SPADE, PrefixSPan and other advanced algorithms followed. View the evolution of data mining techniques based on sequential data, this paper discusses the multiple …

Apriori algorithmComputer sciencebusiness.industryData stream miningConcept mining02 engineering and technologycomputer.software_genreMachine learningGSP AlgorithmTree (data structure)Statistical classificationComputingMethodologies_PATTERNRECOGNITION020204 information systems0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processingData miningArtificial intelligencebusinessK-optimal pattern discoverycomputerFSA-Red Algorithm2017 International Conference on Computer and Applications (ICCA)
researchProduct

Medical Data Mining for Heart Diseases and the Future of Sequential Mining in Medical Field

2018

Data Mining in general is the act of extracting interesting patterns and discovering non-trivial knowledge from a large amount of data. Medical data mining can be used to understand the events happened in the past, i.e. studying a patients vital signs to understand his complications and discover why he has died, or to predict the future by analyzing the events that had happened. In this chapter we are presenting an overview on studies that use data mining to predict heart failure and heart diseases classes. We will also focus on one of the trendiest data-mining field, namely the Sequential Mining, which is a very promising paradigm. Due to its important results in many fields, this chapter …

Apriori algorithmFocus (computing)SequenceComputer science02 engineering and technology030204 cardiovascular system & hematologycomputer.software_genreField (computer science)Domain (software engineering)03 medical and health sciences0302 clinical medicineMultiple time dimensions0202 electrical engineering electronic engineering information engineeringTime constraintA priori and a posteriori020201 artificial intelligence & image processingData miningcomputer
researchProduct

Overview on Sequential Mining Algorithms and Their Extensions

2018

The main purpose of data mining is to extract hidden, important and nontrivial information from a database. Sequential Pattern Mining is a data mining technique that aims to obtain and analyze frequent subsequences from sequences of events or items with or without time constraint. The importance of a sequence can be measured based on different factors such as the frequency of their occurrence, their length and also their profit. The pattern mining or the discovery of important and unexpected patterns and information was first introduced in 1990 with the well-known Apriori algorithm. Then, and after many studies on frequent pattern mining, a new approach appeared: Sequential Pattern Mining. …

Apriori algorithmSequenceSequence databaseProcess (engineering)Computer science02 engineering and technologySequential mining020204 information systems0202 electrical engineering electronic engineering information engineeringTime constraint020201 artificial intelligence & image processingSequential Pattern MiningAlgorithmSequential rule mining
researchProduct