Results 41 to 50 of about 492,160 (173)

El cambio tecnológico en la historia agraria de la España contemporánea [PDF]

open access: yes, 2001
En este estudio se revisan las investigaciones recientes sobre la innovación y el cambio tecnológico en las agriculturas españolas contemporáneas en los siglos XIX y XX, destacando sus marcos teóricos, sus principales conclusiones y sus límites, En este ...
Fernández Prieto, Lourenzo   +1 more
core   +2 more sources

Comprehensive tree assessments for prioritising conservation action in Mesoamerica

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 6, Page 1813-1823, November 2025.
Tree species are of ecological and social importance globally. Mesoamerica has a diverse tree flora, and the region has experienced major changes in natural habitats due to human activities. In this study, for the first time, we assessed the conservation status of the region's tree species and found that 46% of trees in the region are at risk of ...
Emily Beech   +12 more
wiley   +1 more source

La Cartografía Aeronáutica ante un nuevo cambio tecnológico [PDF]

open access: yes, 2010
El Grupo de Investigación Mercator de la Universidad Politécnica de Madrid, junto con AENA, está poniendo en marcha diversos proyectos de investigación y desarrollo en el campo de las tecnologías de la Información Geográfica aplicadas a la aeronáutica ...
Moya Honduvilla, Javier
core   +1 more source

Bat Distribution and Habitat Protection Degree Along an Elevational Gradient in the Brazilian Atlantic Forest

open access: yesJournal of Biogeography, Volume 52, Issue 10, October 2025.
ABSTRACT Aim We aim to identify areas with greater favourability for bat occurrence in the Serra da Mantiqueira, southeastern Brazil, analyse gaps in bat distribution and evaluate the level of protection of areas with the greatest bat diversity. Location Serra da Mantiqueira, Atlantic Forest, Brazil. Taxon Bats.
William D. Carvalho   +13 more
wiley   +1 more source

Cambio tecnológico y cualificaciones en la industria española : una aproximación estructural / [PDF]

open access: yes, 2001
Consultable des del TDXTítol obtingut de la portada digitalitzadaEn esta tesis doctoral se propone profundizar en la relación entre cambio tecnológico y cualificaciones en el entorno específico de la industria manufacturera española. La tesis se organiza
Mañé Vernet, Ferran
core   +3 more sources

Concept ‘Stretching’ or Concept Innovation? A Review of the Usages of Sovereignty in the Digital Sovereignty Literature

open access: yesPolicy &Internet, Volume 17, Issue 3, September 2025.
ABSTRACT Digital sovereignty and its cognate concepts have become staples of the digital governance debate; however, in the search for a shared understanding of the concept, the proliferation of claims to digital sovereignty by multiple different actors remains a contested issue.
Eric Repetto
wiley   +1 more source

Eficiencia del transporte de carga internacional mexicano: análisis por entidad federativa a través del Índice Malmquist, 2010-2014

open access: yesEconomía Teoría y Práctica, 2019
Un eslabón crucial en el comercio exterior de México, es el transporte de carga internacional carretero, el cual se presupone eficiente per se, lo que no siempre sucede en la realidad.
América Ivonne Zamora Torres   +1 more
doaj   +1 more source

Territorio y cambio tecnológico [PDF]

open access: yes
The use that man has reached in knowledge has allowed him to convert the natural medium. In this process incorporating the techniques in an unequal manner is like adding an extra data to the territory, have participated in the definition of the various ...
Trinca Fighera, Delfina
core   +1 more source

Innovación tecnológica y supervivencia en el sector de prensa diaria en España [PDF]

open access: yes, 1998
Este artículo explora las causas y las consecuencias del cambio tecnológico y cómo estas se reflejan en la supervivencia de las empresas de un determinado sector ...
Gutiérrez, Isabel   +1 more
core   +1 more source

Nerd Harder: A Typology of Techno‐Legal Solutionist Logics in Child Online Safety Laws

open access: yesPolicy &Internet, Volume 17, Issue 3, September 2025.
ABSTRACT As jurisdictions worldwide grapple with regulating social media's effects on youth, US state legislatures have emerged as important laboratories for “techno‐legal solutionism”—the belief that complex social problems can be solved through legally mandated technical fixes.
Amanda Reid, Lorcan Neill, Evan Ringel
wiley   +1 more source

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