Results 81 to 90 of about 803,000 (313)

Ciudades fronterizas México-Estados Unidos

open access: yesEstudios Fronterizos, 1994
La extensa frontera México-Estados Unidos posee una especificidad que la diferencia de otras regiones, la organización del espacio urbano a lo largo de la franja fronteriza compuesto por ciudades "gemelas" ubicadas a ambos lados. Desde un enfoque geográfico, en este artículo se analizan diversos elementos económicos, demográficos y sociales que ...
Jean Revel-Mouroz, Alain Vanneph
openaire   +4 more sources

Oportunidades para hacer más ágil el comercio agropecuario México-Estados Unidos

open access: yes, 2017
Este articulo explora algunas maneras de facilitar el comercio agropecuarioMexico-Estados Unidos, enfocandose en los procesos y procedimientosen la frontera que rigen este comercio. Se llevaron a cabo 80entrevistas en ambos paises con expertos del sector
Steven Zahniser   +2 more
semanticscholar   +1 more source

Assessing the Corn Belt as an anthropogenic barrier to migrating landbirds in the United States

open access: yesConservation Biology, EarlyView.
Abstract Migrating landbirds adjust their flight and stopover behaviors to efficiently cross inhospitable geographies, such as the Gulf of Mexico and the Sahara Desert. In addition to these natural barriers, birds may increasingly encounter anthropogenic barriers created by large‐scale changes in land use. One such barrier could be the Corn Belt in the
Fengyi Guo   +7 more
wiley   +1 more source

Visual Essay: Confined Bodies, Resilient Souls

open access: yesÍconos, 2017
Visual essay "Confined Bodies, Resilient Souls"
Ulla Berg, Jennifer Castro
doaj   +1 more source

Estados Unidos

open access: yesMeridiano 47, 2017
O artigo trata do recrudescimento do conservadorismo político nos Estados Unidos. Nesse sentido, destaca a formação em torno do movimento conhecido como o Partido do Chá, alusão a um evento de 1773.
openaire   +2 more sources

estados unidos a armadilha do unipolarismo [PDF]

open access: yesMeridiano 47 - Journal of Global Studies, 2002
O presente artigo tem como foco os novos desafios a serem enfrentados pelos Estados Unidos na nova ordem mundial.
openaire   +3 more sources

Exploring gaps, biases, and research priorities in the evidence for reptile conservation actions

open access: yesConservation Biology, EarlyView.
Abstract With over 21% of reptile species threatened with extinction, there is an urgent need to ensure conservation actions to protect and restore populations are informed by relevant, reliable evidence. We examined the geographic and taxonomic distribution of 707 studies that tested the effects of actions to conserve reptiles synthesized in ...
Oliver Speight   +9 more
wiley   +1 more source

Escaping the large lecture hall: how to turn a large enrollment third-year Spanish grammar class into a hybrid / online class [PDF]

open access: yesmarcoELE. Revista de Didáctica Español Lengua Extranjera, 2014
The purpose of this paper is to show that a hybrid and/or a fully online course can be an effective alternative for large enrollment classes, summer courses, and/or for non-traditional students.
Ausín, Adolfo, Ruiz-Sánchez, Carmen
doaj  

Uso de Twitter en Educación Superior en España y Estados Unidos

open access: yes, 2017
El presente articulo examina los usos y las percepciones de estudiantes y profesores en relacion a Twitter a partir de una investigacion comparada con metodologias mixtas.
G. Tur   +2 more
semanticscholar   +1 more source

Mismanagement amid resource abundance: Sovereign risk, private sector credit rationing, and economic stagnation in Colombia, 1861‒98

open access: yesThe Economic History Review, EarlyView.
Abstract This article examines the relationship between national politics, sovereign default, credit rationing, and their effects on fiscal revenues and exports in nineteenth‐century Colombia. Using quantitative and qualitative analysis, it challenges existing narratives on Colombia's lack of sustained nineteenth‐century export‐led development, showing
Andrew Primmer
wiley   +1 more source

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