Results 41 to 50 of about 9,718,972 (114)

Transformación Afín Bidimensional (AT2D) para Interpolación de Velocidades Geodésicas utilizando Soluciones Semanales SIRGAS-CON

open access: yesRevista Tecnica De La Facultad De Ingenieria Universidad Del Zulia
Los modelos de velocidades geodésicas son cruciales para la transformación de coordenadas de una época de referencia a una época de observación. Su desarrollo suele requerir mucho tiempo y actualizaciones frecuentes para mantener su validez. Para abordar el problema de su validez, este estudio examina el uso de la Transformación Afín Bidimensional ...
Hermógenes David Suárez Acosta   +4 more
openaire   +1 more source

Social roles and resource competition mediate intraspecific interactions of Chilean Flamingo (Phoenicopterus chilensis) in southern Brazil

open access: yesJournal of Zoology, Volume 329, Issue 3, Page 257-270, July 2026.
In social birds such as flamingos, intraspecific interactions are frequent and play a key role in flock cohesion, communication, and the establishment of social networks. Understanding the patterns and drivers of these interactions can provide valuable ecological insights and inform management, husbandry, and conservation practices.
H. C. Delfino, P. Rose, C. J. Carlos
wiley   +1 more source

Simultaneous Generation of Topographic Models and Manning Roughness Coefficient Maps From Tri‐Stereoscopic Satellite Images: Application to the Huarmey River, Peru

open access: yesThe Photogrammetric Record, Volume 41, Issue 195, July‐September 2026.
Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita   +3 more
wiley   +1 more source

Estimated tropospheric delay in the SIRGAS GNSS stations and their validation with IGS estimations and radiosondes [PDF]

open access: yes, 2019
En América Latina, la red SIRGAS, dispone de más de 400 estaciones GNSS de operación continua, distribui-das en más de 15 países, sobre regiones climáticas diferentes.
Mackern, María Virginia   +7 more
core   +1 more source

Cálculo, mediante la aplicación del algoritmo de ajuste por mínimos cuadrados, de los componentes de velocidad para estaciones GNSS continuas

open access: yesUniciencia, 2014
El cálculo de la velocidad de una estación de observación continua GNSS representa un insumo fundamental en la geodesia moderna. El hecho de determinar la posición de las estaciones GNSS de forma diaria implica que se puedan establecer las series ...
Jorge Moya Zamora   +2 more
doaj   +2 more sources

Diet composition of the Red‐billed curassow (Crax blumenbachii) and its role as seed disperser in the Atlantic Forest: conservation insights

open access: yesRestoration Ecology, Volume 34, Issue 5, July 2026.
Abstract Introduction Forest fragmentation and defaunation are major drivers of biodiversity loss in the Atlantic Forest of Brazil, where 70–90% of tree species depend on animal‐mediated seed dispersal. Reintroduction of large frugivores, such as cracids, is being used to restore species populations and lost ecological functions.
Maria P. M. X. Rufino   +9 more
wiley   +1 more source

Multifactorial Screening for Fine‐Scale Selection of CCS Industrial Clusters and Hubs in Brazil

open access: yesGreenhouse Gases: Science and Technology, Volume 16, Issue 3, Page 364-395, June 2026.
ABSTRACT As Brazil moves toward implementing its decarbonization commitments, carbon capture and storage (CCS) hubs are emerging as a key pathway for large‐scale CO2 abatement in hard‐to‐abate sectors. This paper presents a multifactorial, data‐driven framework to screen and prioritize potential CCS industrial clusters and hubs across Brazilian regions,
Gustavo P. Oliveira   +5 more
wiley   +1 more source

Desplazamientos en la red SIRGAS-CON debidos a cargas atmosféricas, hidrológicas y oceánicas no mareales [PDF]

open access: yes, 2022
Objetivos: - Comparación y análisis de distintos modelos que cuantifican los fenómenos de carga sobre la región de América del Sur - Determinar su influencia en la variación de la coordenada vertical para estaciones de la red SIRGAS-CONFacultad de ...
Brunini, Claudio Antonio   +3 more
core  

Implementación del servicio de datos GPS de la Escuela de Topografía, Catastro y Geodesia

open access: yesUniciencia, 2010
En la Escuela de Topografía, Catastro y Geodesia (ETCG) se ha implementado el Servicio de Datos GPS (SDG), el cual es un dominio en Internet que ofrece a los diferentes usuarios el acceso a información técnica y la posibilidad de descargar los archivos ...
Jorge Moya Zamora
doaj   +2 more sources

Apparent Forest‐Cover Stability Conceals Structural and Functional Landscape Reorganization in a Human‐Modified Atlantic Forest–Cerrado Ecotone

open access: yesJournal of Biogeography, Volume 53, Issue 6, June 2026.
ABSTRACT Aim To evaluate how long‐term forest turnover reshapes habitat structure and functional connectivity in a human‐modified Atlantic Forest–Cerrado ecotone landscape. Location Sarapuí River Basin, southeastern Brazil. Taxon Native forest vegetation and forest‐dependent taxa of the Atlantic Forest–Cerrado ecotone.
Milton Vinícius Morales   +1 more
wiley   +1 more source

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