Results 51 to 60 of about 2,225,711 (233)

LOS COMIENZOS DEL TRANSPORTE MECANIZADO TERRESTRE EN MAGALLANES (1900-1930) THE BEGINNINGS OF MECHANIZED TERRESTRIAL TRANSPORT IN MAGELLAN (1900-1930)

open access: yesMagallania, 2009
Se da cuenta de las formas y circunstancias que determinaron la evolución del sistema de transporte en Magallanes, desde los carruajes de tiro animal propios de la época de la colonización inicial, hasta los vehículos automotores, fenómeno entendido como
Mateo Martinic B
doaj  

A CADEIA PRODUTIVA DO TABACO NA ECONOMIA BRASILEIRA: UMA ANÁLISE MULTISSETORIAL/ The tobacco production chain in the Brazilian economy: a multisectoral analysis

open access: yesInforme Gepec
Este estudo investigou a interrupção parcial ou total do setor/atividade de fabricação de produtos de fumo, com o objetivo de quantificar a perda percentual na produção nacional em caso de uma interrupção hipotética deste setor, parte da cadeia ...
Wagner dos Santos Nunes   +3 more
doaj   +1 more source

Transporte nacional terrestre de perros y gatos

open access: yes, 2021
Treball presentat a la Facultat de Veterinària de la Universitat Autònoma de Barcelona. Treball presentat a l'assignatura de Deontologia i Veterinària Legal (21223)
Clarà Wuest, Silvia.   +2 more
openaire   +1 more source

Kuwae, Epi and Tongoa Islands: Transformations of a volcanic landscape in central Vanuatu

open access: yesArchaeology in Oceania, Volume 60, Issue 1, Page 42-62, April 2025.
ABSTRACT This paper presents a detailed overview of archaeological research undertaken on Epi and Tongoa, in central Vanuatu. These islands were previously connected to one another and respectively formed the western and eastern portions of Kuwae, one of the largest islands in the Vanuatu archipelago, until the catastrophic Tombuk volcanic eruption ...
ROBERT HENDERSON   +7 more
wiley   +1 more source

Toward reinforcing the link between Gaia and ICRF frames [PDF]

open access: yesIn: Proc. Journees 2017 "Systemes de Reference et de la Rotation Terrestre", Alicante, Spain, 25-27 Sep 2017, Eds. J.M. Ferrandiz, C. Bizouard, M.C. Martinez-Belda, J.F. Navarro, ISBN 978-84-1302-092-1, 117-123, 2018
The link problem between radio (VLBI/ICRF) and optical (Gaia/GCRF) celestial reference frames is analyzed. Both systems should be a realization of the ICRS (International Celestial Reference System) at microarcsecond level of accuracy. Therefore, the link between the ICRF and GCRF should be obtained with similar accuracy, which is not a trivial task ...
arxiv  

Regularised optimal self-transport is approximate Gaussian mixture maximum likelihood [PDF]

open access: yesarXiv, 2023
We investigate the link between regularised self-transport problems and maximum likelihood estimation in Gaussian mixture models (GMM). This link suggests that self-transport followed by a clustering technique leads to principled estimators at a reasonable computational cost.
arxiv  

Seguridad del Transporte Terrestre: Retos y Perspectivas

open access: yesCiencia Sociales y Económicas, 2018
El transporte terrestre es aquel traslado que se realiza sobre la superficie de la tierra, la gran mayoría se realizan sobre ruedas, tiene su origen en el traslado del ser humano, quien por la necesidad de moverse o de trasladar sus cargas atendiendo al peso o la distancia se vio en la necesidad de perfeccionar este mecanismo, desde el empleo de los ...
openaire   +3 more sources

The Role of Nurse Trees in the Plant Community of Park Grassland: A Case Study in Southern Brazil

open access: yesApplied Vegetation Science, Volume 28, Issue 2, April/June 2025.
Tree species facilitate the assembly of park grassland plant communities by altering environmental conditions and promoting woody and herbaceous species under their canopies. They support biodiversity and have potential for ecological restoration but may contribute to woody nucleation.
Guilherme Diego Fockink   +6 more
wiley   +1 more source

Conservation priorities for functionally unique and specialized terrestrial vertebrates threatened by biological invasions

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
Abstract Invasive non‐native species (INS) continue to pose a significant threat to biodiversity, including native population declines, which can ultimately disrupt ecosystem processes. Although there is growing evidence of the impacts of INS on functional diversity, most of the existing approaches to prioritization of species for conservation still ...
Clara Marino   +2 more
wiley   +1 more source

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