Search results for "Statistic"
showing 10 items of 12520 documents
TISSBERT: A benchmark for the validation and comparison of NDVI time series reconstruction methods
2018
[EN] This paper introduces the Time Series Simulation for Benchmarking of Reconstruction Techniques (TISSBERT) dataset, intended to provide a benchmark for the validation and comparison of time series reconstruction methods. Such methods are routinely used to estimate vegetation characteristics from optical remotely sensed data, where the presence of clouds decreases the usefulness of the data. As for their validation, these methods have been compared with previously published ones, although with different approaches, which sometimes lead to contradictory results. We designed the TISSBERT dataset to be generic so that it could simulate realistic reference and cloud-contaminated time series …
Computational aspects in checking of coherence and propagation of conditional probability bounds
2000
In this paper we consider the problem of reducing the computational difficulties in g-coherence checking and propagation of imprecise conditional probability assessments. We review some theoretical results related with the linear structure of the random gain in the betting criterion. Then, we propose a modi ed version of two existing algorithms, used for g-coherence checking and propagation, which are based on linear systems with a reduced number of unknowns. The reduction in the number of unknowns is obtained by an iterative algorithm. Finally, to illustrate our procedure we give some applications.
Algorithms for coherence checking and propagation of conditional probability bounds
2001
In this paper, we propose some algorithms for the checking of generalized coherence (g-coherence) and for the extension of imprecise conditional probability assessments. Our concept of g-coherence is a generalization of de Finetti’s coherence principle and is equivalent to the ”avoiding uniform loss” property for lower and upper probabilities (a la Walley). By our algorithms we can check the g-coherence of a given imprecise assessment and we can correct it in order to obtain the associated coherent assessment (in the sense of Walley and Williams). Exploiting some properties of the random gain we show how, in the linear systems involved in our algorithms, we can work with a reduced set of va…
La mobilità dei turisti in Sicilia: aspetti motivazionali e comportamentali.
2013
Darbaspēka migrācijas process: Ukrainas un Latvijas situācijas analīze
2019
Diplomdarba nosaukums: „ Darbaspēka migrācijas process: Ukrainas un Latvijas situācijas analīze”. Par minētā darba mērķi kalpo noteikta darba migrācijas iemesli uz populārākajām darba nozarēm priekš migrācijas no Ukrainas un Latviju. Pirmā darba daļa saistīta ar teoriju, noteiktu un klasificētu darbaspēka vērtības migrāciju, kā arī par migrācijas galveno iemeslu un valdības lomu migrācijā, kā arī par galveno iedzīvotāju kritēriju valsts izvēlē priekš darba migrācijas. Otrajā daļā tiek aprakstīta migrācijas un migrantu statistika Latvijā un Ukrainā, kā arī migrācijas politika ES trešajām valstīm. Un beidzot trešajā daļā analizējas ekspertu viedokļi un ukraiņu aptauja. Secinājumi un ieteikumi…
Bifactor analysis and construct validity of the five facet mindfulness questionnaire (FFMQ) in non-clinical Spanish samples
2015
The objective of the present study was to examine the dimensionality, reliability, and construct validity of the Five Facet Mindfulness Questionnaire (FFMQ) in three Spanish samples using structural equation modeling (SEM). Pooling the FFMQ data from 3 Spanish samples (n = 1191), we estimated the fit of two competing models (correlated five-factor vs. bifactor) via confirmatory factor analysis. The factorial invariance of the best fitting model across meditative practice was also addressed. The pattern of relationships between the FFMQ latent dimensions and anxiety, depression, and distress was analyzed using SEM. FFMQ reliability was examined by computing the omega and omega hierarchical c…
The role of EHP-30 as specific instrument to assess the quality of life of Italian women with endometriosis
2012
Proposing a Novel Predictive Technique for Gully Erosion Susceptibility Mapping in Arid and Semi-arid Regions (Iran)
2019
© 2019 by the authors. Gully erosion is considered to be one of the main causes of land degradation in arid and semi-arid territories around the world. In this research, gully erosion susceptibility mapping was carried out in Semnan province (Iran) as a case study in which we tested the efficiency of the index of entropy (IoE), the Vlse Kriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method, and their combination. Remote sensing and geographic information system (GIS) were used to reduce the time and costs needed for rapid assessment of gully erosion. Firstly, a gully erosion inventory map (GEIM) with 206 gully locations was obtained from various sources and randomly divided into t…
Nueva evidencia sobre la Statistical Anxiety Scale (SAS)
2014
Title: New evidence on the Statistical Anxiety Scale (SAS). Abstract: As anxiety is negatively related to academic performance, and it is broadly known the existence of both anxiety towards statistics and nega- tive statistics results, statistical anxiety may play a role of mediating negative outcomes in this subject. In this context, the Statistical Anxiety Scale (Vigil- Colet, Lorenzo-Seva, & Condon, 2008) aims to be a useful tool in the comparison of the predictive power of specific and general measures of statistics performance. In order to achieve this goal, the scale is based on three dimensions of anxiety, referred to three specific issues: regarding the exam, when asking for help or…
New evidence on the Statistical Anxiety Scale (SAS)
2014
Las asignaturas relacionadas con la estadística suelen tener problemas de rendimiento académico. La ansiedad se relaciona de forma negativa con el rendimiento y en particular, la ansiedad estadística puede ser un constructo clave en la mejora de la enseñanza de esta materia y afines. La Statistical Anxiety Scale (Vigil-Colet, Lorenzo-Seva y Condon, 2008) se creó con la pretensión de ser útil para predecir el rendimiento académico en estadística. Se fundamenta en tres dimensiones de ansiedad referidas a tres aspectos específicos: respecto al examen, cuando se pide ayuda en la comprensión de estadística y en el proceso de interpretación de resultados. Esta estructura de tres factores fue hall…