Search results for "DISTANCE"
showing 10 items of 1009 documents
Spēlēs balstītas mācību platformas skolēnu angļu valodas vārdu krājuma bagātināšanai attālinātās mācībās 5. klasē
2020
Mūsdienās tehnoloģiju attīstības un distonciētās apmācības dēļ, strauji pieauga tiešsaišu komunikāciju un mācību platformu izmantošana cilvēku ikdienā. It īpaši, šī situācija skāra izglītības iestādes: skolas skolotājus, skolēnus un vecākus. Diplomdarba autors ir izpētījis vairākas spēļu balstītas mācību platformas, lai bagātinātu angļu valodas vārdu krājumu attālinātās mācībās 5. klasē. Autors ir analizējis literatūru par vārdu krājuma mācīšanos un platformu izmantošanu. Kā pētījuma metode tika izvēlēta gadījuma izpēte. Savukārt, kā datu iegūšanas metodes tika izmantotas angļu valodas skolotāju anketas, skolēnu (vecumā no 11 līdz 12 gadiem) pirms un pēc pētījuma anketas. Skolēniem bija ies…
Euclid preparation. XII. Optimizing the photometric sample of the Euclid survey for galaxy clustering and galaxy-galaxy lensing analyses
2021
Pocino, A., et al. (Euclid Collaboration)
Toolbox for Distance Estimation and Cluster Validation on Data With Missing Values
2022
Missing data are unavoidable in the real-world application of unsupervised machine learning, and their nonoptimal processing may decrease the quality of data-driven models. Imputation is a common remedy for missing values, but directly estimating expected distances have also emerged. Because treatment of missing values is rarely considered in clustering related tasks and distance metrics have a central role both in clustering and cluster validation, we developed a new toolbox that provides a wide range of algorithms for data preprocessing, distance estimation, clustering, and cluster validation in the presence of missing values. All these are core elements in any comprehensive cluster analy…
Market Potential and Regional Economic Growth in Spain, 1860-1930
2015
espanolEn este articulo se utilizan tecnicas parametricas y no parametricas para el analisis del impacto de los cambios registrados en el potencial de mercado de las regiones espanolas sobre su dinamica de crecimiento en el periodo 1860‐1930. El estudio del caso espanol permite analizar si la construccion de nuevas infraestructuras de transporte, asi como los cambios en la politica comercial, al afectar al potencial de mercado relativo de las regiones espanolas, acabaron por moldear sus trayectorias de crecimiento. Para la realizacion del analisis se utilizan nuevas estimaciones retrospectivas de PIB per capita de las NUTS III espanolas (provincias) y una estimacion a la Harris del potencia…
The implementation of massive open online courses for training future engineers in higher education
2019
This paper investigates the features of the implementation, conduct, analysis and prospects for the use of massive, open online courses. The article deals with the main advantages and disadvantages of massive open online courses, presents a comparative analysis of research into implementation of massive, open online courses. The article outlines the basic course requirements. It contains an analysis of the current state of such courses in higher educational institutions. The article presents a number of recommendations for the development of the education system towards democratization of higher education
La educación en tiempos virales: el caso de Portugal
2021
Este artículo presenta una contribución para comprender los efectos de la pandemia de COVID-19 en la educación (básica y secundaria). Se centra en el proceso de confinamiento y la consiguiente transición hacia un modelo de enseñanza a distancia vivido en Portugal entre marzo y junio de 2020. Para ello, se empieza por buscar un marco teórico adecuado que permita comprender un fenómeno novedoso, imprevisible y que cuenta con un trasfondo biológico, pero que ha accionado un conjunto complejo de dinámicas políticas, económicas, sociales y culturales. A continuación, se discuten algunos informes internacionales relevantes. En la segunda parte, tras algunas notas metodológicas, se analizan los pr…
The ALHAMBRA survey: Bayesian photometric redshifts with 23 bands for 3 deg2
2014
A. Molino et al.
Data from: Forest snail faunas from Transylvania (Romania), and their relationship to the faunas of Central and Northern Europe
2011
Forty-three forest sites in seven sampling areas in mountainous parts of Transylvania were sampled to obtain inventories of their snail faunas, and to make comparisons between these and the faunas of similar sites further north along the Carpathian chain. Sampling areas ran from close to the Ukrainian border in the north to Retezat in the south-west. Altogether, 83 species were found, and between 19 and 40 species at individual sites. Sites within the same sampling area had more species in common than in among-area comparisons, but differences between areas did not relate to distance between them. Such differences appeared to relate more to ecological factors than to geography. Faunas of al…
Data from: Propagule pressure increase and phylogenetic diversity decrease community’s susceptibility to invasion
2017
Invasions pose a large threat to native species, but the question of why some species are more invasive, and some communities more prone to invasions than others, is far from solved. Using ten different three-species bacterial communities, we tested experimentally if the phylogenetic relationships between an invader and a resident community and propagule pressure affect invasion probability. We found that greater diversity in phylogenetic distances between the resident community members and the invader lowered invasion success, and higher propagule pressure increased invasion success whereas phylogenetic distance had no clear effect. In the later stages of invasion phylogenetic diversity ha…
Data from: Gauging scale effects and biogeographical signals in similarity distance decay analyses: an Early Jurassic ammonite case study
2017
In biogeography, the similarity distance decay (SDD) relationship refers to the decrease in compositional similarity between communities with geographical distance. Although representing one of the most widely used relationships in biogeography, a review of the literature reveals that: (1) SDD is influenced by both spatial extent and sample size; (2) the potential effect of the phylogenetic level has yet to be tested; (3) the effect of a marked biogeographical structuring upon SDD patterns is largely unknown; and (4) the SDD relationship is usually explored with modern, mainly terrestrial organisms, whereas fossil taxa are seldom used in that perspective. Using this relationship, we explore…