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Resultados globales: 15 registros encontrados en 0.02 segundos.
Artículos, Encontrados 14 registros
Documentos de investigación, Encontrados 1 registros
Artículos Encontrados 14 registros  1 - 10siguiente  ir al registro:
1.
13 p, 2.4 MB Does collaborative and experiential work influence the solution of real-context estimation problems? A study with prospective teachers / Segura, Carlos (Universitat de València) ; Ferrando, Irene (Universitat de València) ; Albarracín Gordo, Lluís (Universitat Autònoma de Barcelona)
Although it is a challenge for primary school teachers, real-context estimation problems can be used as an introduction to mathematical modeling. With this aim, we designed a two-phase activity: in the first phase, 224 prospective teachers developed individual action plans to solve asequence of real-context estimation problems in the classroom; in the second phase, they completed the solution of the same problems working in groups in the real location where the four problems were contextualized. [...]
2023 - 10.1016/j.jmathb.2023.101040
Journal of Mathematical Behavior, Vol. 70 (2023) , article number 101040  
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2.
21 p, 623.4 KB Esquemas de resolución de problemas de Fermi como herramienta de diseño y gestión para el profesor / Albarracín Gordo, Lluís (Universitat Autònoma de Barcelona. Departament de Didàctica de la Matemàtica i de les Ciències Experimentals) ; Ärlebäck, Jonas Bergman (Universitat Autònoma de Barcelona. Departament de Didàctica de la Matemàtica i de les Ciències Experimentals)
Se presenta una caracterización de las resoluciones posibles a un problema de Fermi a partir de los Esquemas de Resolución de Problemas de Fermi (ERPF). El artículo presenta la fundamentación teórica basada en investigaciones previas sobre problemas de Fermi en Educación Matemática y otros campos de investigación que permite identificar las cuatro actividades principales que pueden utilizarse al resolverlos. [...]
This article presents a characterization of the possible resolutions to a Fermi problem from the Fermi problem Activity Templates (FpAT). The article presents the theoretical foundation based on previous research on Fermi problems in Mathematics Education and other fields of research that allows the identification of the four main activities that can be used when solving them. [...]
2022 - 10.24844/EM3402.11
Educacion matematica, Vol. 34 Núm. 2 (2022) , p. 289-309  
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3.
16 p, 856.7 KB Modelización matemática en actividades estadísticas: Episodios clave para la generación de modelos / Aymerich, Àngels (Universitat Autònoma de Barcelona) ; Albarracín Gordo, Lluís (Universitat Autònoma de Barcelona)
En nuestro trabajo estamos interesados en promover el aprendizaje de conocimientos estadísticos por parte de alumnos de educación secundaria a partir de la modelización matemática. En concreto, usamos problemas estadísticos abiertos donde se estudian fenómenos sociales reales a partir de grandes cantidades de datos que cumplen con los principios de diseño de las model-eliciting activities con alumnos del último curso de educación obligatoria en España (15 años). [...]
This work is intended to assist 15-year-old secondary school students to learn about statistics using mathematical modeling. Specifically, open statistical problems are presented in which real social phenomena are studied by students using large data sets that comply with the design principles of model-eliciting activities. [...]
2022 - 10.15359/ru.36-1.16
Uniciencia, Vol. 36 Núm. 1 (2022) , pp. 1-16  
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4.
22 p, 2.2 MB Una actividad de modelización matemática en primaria con datos auténticos de la COVID-19 / Trelles, César (Universidad de Cuenca) ; Toalongo, Ximena (Universitat de Girona) ; Alsina i Pastells, Ángel (Universitat de Girona)
El objetivo de este estudio es analizar una tarea de modelización matemática desarrollada por alumnos de sexto curso de educación primaria (11-12 años) a partir de una actividad reveladora del pensamiento con datos estadísticos reales de la COVID-19, implementada en línea durante el período de confinamiento en España. [...]
The aim of this study is to analyze a mathematical modeling task developed by students in the sixth grade of primary education (11-12 years old) based on a model-eliciting activity with real statistical data about COVID-19, which was implemented online during the period of confinement in Spain. [...]
2022 - 10.5565/rev/ensciencias.3472
Enseñanza de las ciencias, Vol. 40 Núm. 2 (2022) , p. 193-213 (Innovaciones Didácticas)  
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5.
14 p, 1.6 MB A Diffusion Model to Quantify Membrane Repair Process in Listeria monocytogenes Exposed to High Pressure Processing Based on Fluorescence Microscopy Data / Nikparvar, Bahareh (Norwegian University of Science and Technology. Department of Chemical Engineering) ; Subires Orenes, Alicia (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments) ; Capellas Puig, Marta (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments) ; Hernandez-Herrero, Manuela (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments) ; Crauwels, Peter (Ulm University. Institute of Microbiology and Biotechnology) ; Riedel, Christian U. (Ulm University. Institute of Microbiology and Biotechnology) ; Bar, Nadav (Norwegian University of Science and Technology. Department of Chemical Engineering)
The effects of environmental stresses on microorganisms have been well-studied, and cellular responses to stresses such as heat, cold, acids, and salts have been extensively discussed. Although high pressure processing (HPP) is becoming more popular as a preservation method in the food industry, the characteristics of the cellular damage caused by high pressure are unclear, and the microbial response to this stress has not yet been well-explored. [...]
2021 - 10.3389/fmicb.2021.598739
Frontiers in microbiology, Vol. 12 (may 2021)  
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6.
19 p, 995.7 KB Dynamics of Phenotypic Heterogeneity Associated with EMT and Stemness during Cancer Progression / Jolly, Mohit Kumar (Indian Institute of Science) ; Celià-Terrassa, Toni (Institut Hospital del Mar d'Investigacions Mèdiques)
Genetic and phenotypic heterogeneity contribute to the generation of diverse tumor cell populations, thus enhancing cancer aggressiveness and therapy resistance. Compared to genetic heterogeneity, a consequence of mutational events, phenotypic heterogeneity arises from dynamic, reversible cell state transitions in response to varying intracellular/extracellular signals. [...]
2019 - 10.3390/jcm8101542
Journal of clinical medicine, Vol. 8 (september 2019)  
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7.
17 p, 5.0 MB Noncoding SNPs influence a distinct phase of Polycomb silencing to destabilize long-term epigenetic memory at Arabidopsis FLC / Qüesta, Julia I. (Norwich Research Park. John Innes Centre (UK)) ; Antoniou-Kourounioti, Rea Laila (Norwich Research Park. John Innes Centre (UK)) ; Rosa, Stefanie (Norwich Research Park. John Innes Centre (UK)) ; Li, Peijin (Norwich Research Park. John Innes Centre (UK)) ; Duncan, Susan (Norwich Research Park. John Innes Centre (UK)) ; Whittaker, Charles (Norwich Research Park. John Innes Centre (UK)) ; Howard, Martin (Norwich Research Park. John Innes Centre (UK)) ; Dean, Caroline (Norwich Research Park. John Innes Centre (UK))
In Arabidopsis thaliana, the cold-induced epigenetic regulation of FLOWERING LOCUS C (FLC) involves distinct phases of Polycomb repressive complex 2 (PRC2) silencing. During cold, a PHD-PRC2 complex metastably and digitally nucleates H3K27me3 within FLC. [...]
2020 - 10.1101/gad.333245.119
Genes & Development, Vol. 34, Issue 5-6 (March 2020) , p. 446-461  
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8.
20 p, 10.5 MB Mathematical modeling projects oriented towards social impact as generators of learning opportunities : a case study / Albarracín Gordo, Lluís (Universitat Autònoma de Barcelona. Departament de Didàctica de la Matemàtica i de les Ciències Experimentals) ; Gorgorió Solà, Núria (Universitat Autònoma de Barcelona. Departament de Didàctica de la Matemàtica i de les Ciències Experimentals)
This paper presents a case study carried out at an elementary school that led to a characterization of mathematical modeling projects aimed at generating social impact. It shows their potential as generators of mathematical learning opportunities. [...]
2020 - 10.3390/math8112034
Mathematics, Vol. 8, núm. 11 (2020) , p. e2034  
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9.
12 p, 645.8 KB The use and potential of Fermi problems in the STEM disciplines to support the development of twenty-first century competencies / Ärlebäck, Jonas Bergman (Linköping Univeristy. Department of Mathematics) ; Albarracín Gordo, Lluís (Universitat Autònoma de Barcelona)
This paper presents the results of a literature review focusing on the use and potential of Fermi problems (FPs) in the STEM disciplines. We identify different usages and roles given to FPs in each of the STEM disciplines and highlight their potential to promote modeling of real phenomena and situations as well as learning about the estimation of quantities. [...]
2019 - 10.1007/s11858-019-01075-3
ZDM - Mathematics Education, Vol. 51 Núm. 6 (january 2019) , p. 979-990  
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10.
48 p, 431.5 KB Measuring poverty in multidimensional contexts / Permanyer, Iñaki (Centre d'Estudis Demogràfics)
When measuring multidimensional poverty it is reasonable to expect that the trade-offs between variable pairs can differ depending on whether the concerned pairs are complements or substitutes. Yet, currently existing approaches based on deprivation count distributions unrealistically assume that all pairs of variables are related in the same way-an unfortunate circumstance that undermines the possibilities of identifying the poor, aggregating their poverty levels and modeling non-trivial interactions between variables in highly flexible ways. [...]
2019 - 10.1007/s00355-019-01207-4
Social choice and welfare, Vol. 53 Núm. 4 (2019) , p. 677-708  
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Artículos : Encontrados 14 registros   1 - 10siguiente  ir al registro:
Documentos de investigación Encontrados 1 registros  
1.
164 p, 3.0 MB Towards granular biomass implementation for urban wastewater treatment / Isanta Monclús, Eduardo ; Carrera, Julian, dir. (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental) ; Pérez Cañestro, Julio, dir. (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental) ; Universitat Autònoma de Barcelona. Departament d'Enginyeria Química
Una alternativa al tratamiento de aguas residuales urbanas mediante lodos activos son los sistemas de biomasa granular. Las características morfológicas de la biomasa granular le confieren, principalmente, dos ventajas sobre la biomasa floculenta: (i) la habilidad de sedimentar más rápido, y (ii) la posibilidad de realizar simultáneamente procesos aerobios, anóxicos y anaerobios dentro. [...]
Granular biomass has been proposed as an alternative to activated sludge for the sewage treatment. The morphological characteristics of granular biomass, provides granules two main advantages over flocular biomass: (i) the ability of settling faster, and (ii) the possibility of performing aerobic, anoxic and anaerobic processes simultaneously. [...]
[Barcelona] : Universitat Autònoma de Barcelona, 2014  
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