Results 41 to 50 of about 2,470,005 (193)
ANÁLISIS DEL PRECIO DEL CARBÓN MEDIANTE REDES NEURONALES ARTIFICIALES (RNA)
Boletín de Ciencias de la Tierra, 2014 En el presente artículo se desarrolla el análisis aproximado para el precio FOB (Free on Board) del carbón térmico de Colombia para el periodo 2012-2020.
Giovanni Franco Sepúlveda +2 more
doaj +1 more source
La Programacion Espacio/Temporal Del Relato. [PDF]
, 1989 La programacion espacio/temporal es el conjunto de dos elementos: el elemento espacial, que implica la organizacion del proceso por el cual se enlazan los espacios discretos mediante la sintagmatica; y el elemento temporal, que implica la representacion ...
Blossman, M. Ellen
core +1 more source
Methods in Ecology and Evolution, Volume 17, Issue 8, Page 2379-2394, August 2026.Abstract Automatic re‐identification of animals has significant potential to address pressing ecological and conservation challenges through improved population monitoring, individual health assessment and detailed behavioural analyses. Although numerous computer‐vision‐based solutions have been proposed and many achieve high accuracy, most remain ...
András Zábó +5 more
wiley +1 more source
Determinación numérica del exponente de Lyapunov de una serie temporal caótica
Programación Matemática y SoftwareLa determinación del exponente de Lyapunov de una serie temporal a través de procesos numéricos tiene diversas implicaciones. Dependiendo de si el exponente de Lyapunov dominante es positivo o negativo, podemos determinar si la serie temporal es caótica
Gennadiy Burlak +2 more
doaj +1 more source
Political Trust and Aspirations to Influence Social Media During a Crisis: A Longitudinal Study
Policy &Internet, Volume 18, Issue 1, March 2026.ABSTRACT This study investigated how political trust shaped citizens' aspirations to influence others on social media during a COVID‐19 pandemic. Using four‐wave longitudinal survey data (2017–2021; N = 2172) collected from 543 citizens in Finland, we first analysed how political trust moderated the temporal development of individuals' aspirations to ...
Aki Koivula +2 more
wiley +1 more source
Biotropica, Volume 58, Issue 1, January 2026.Nectar is a highly variable, mostly unpredictable resource in tropical mountains. How do nectarivorous birds such as this male Great Sapphirewing cope? Fine‐scaled tracking of hummingbirds and flowerpiercers shows flexibility in daily movement strategies in the high Andes, possibly in response to fluctuating local conditions such as weather and ...
Cristina Rueda‐Uribe +9 more
wiley +1 more source
Immersion patterns alone can predict vessel following by albatrosses
Journal of Applied Ecology, Volume 62, Issue 8, Page 1831-1843, August 2025.We demonstrate that seabird immersion patterns alone can detect high‐risk seabird‐vessel interactions, even in the absence of locational data for both seabirds and vessels. Our approach could allow for more comprehensive seabird bycatch risk assessments that quantify previously hidden seabird‐vessel interactions, such as those involving migratory life ...
Jonathan D. Rutter +6 more
wiley +1 more source
Materiales compuestos de matriz acero inoxidable austenítico reforzado con intermetálicos : comportamiento mecánico, a corrosión y desgaste [PDF]
, 1999 La investigación que se presenta en esta Tesis Doctoral, surge como respuesta a la necesidad de resolver una serie de problemas que están relacionados entre sí, como son el encontrar condiciones de producción industrial de bajo costo para los aceros ...
Moreira Lima, Walter
core +1 more source
Journal of Animal Ecology, Volume 93, Issue 9, Page 1176-1191, September 2024.During fall migration, avivorous raptors and avian prey co‐occur across space and time. We used a novel approach—combining eDNA metabarcoding and eBird data—to investigate predator–prey interactions between an avivorous raptor and co‐occurring avian prey species. This approach revealed prey availability and traits influence raptor‐songbird interactions
Ryan P. Bourbour +9 more
wiley +1 more source