Search results for "America"
showing 10 items of 1230 documents
La Ilustración en la Universidad de Córdoba y el Colegio de San Carlos de Buenos Aires (1767-1810)
1991
La Ilustración fue una corriente ideológico-intelectual antidogmática, crítica, racionalista, partidaria de los saberes útiles y reformista. Los philosophos retaron las respuestas teológicas, metafísicas y jurídico-políticas, y se lanzaron a revisar críticamente, más o menos intensamente, las nociones fundamentales heredadas. La Ilustración respondía a las mutaciones sociales y económicas que se operaban a lo largo de la centuria (ascenso de capas burguesas, desarrollo del capital comercial), cambios éstos que provocaron una honda crisis de conciencia (subrayada por Paul Hazard) y determinaron la búsqueda de nuevos sistemas de representaciones capaces de dar respuesta a las demandas acucian…
Meta-Analysis of Mitochondrial DNA Reveals Several Population Bottlenecks during Worldwide Migrations of Cattle
2014
Several studies have investigated the differentiation of mitochondrial DNA in Eurasian, African and American cattle as well as archaeological bovine material. A global survey of these studies shows that haplogroup distributions are more stable in time than in space. All major migrations of cattle have shifted the haplogroup distributions considerably with a reduction of the number of haplogroups and/or an expansion of haplotypes that are rare or absent in the ancestral populations. The most extreme case is the almost exclusive colonization of Africa by the T1 haplogroup, which is rare in Southwest Asian cattle. In contrast, ancient samples invariably show continuity with present-day cattle …
¿Fin del Imperio americano?
2002
Data from: Phylogenomics of Lophotrochozoa with consideration of systematic error
2021
Phylogenomic studies have improved understanding of deep metazoan phylogeny and show promise for resolving incongruences among analyses based on limited numbers of loci. One region of the animal tree that has been especially difficult to resolve, even with phylogenomic approaches, is relationships within Lophotrochozoa (the animal clade that includes molluscs, annelids, and flatworms among others). Lack of resolution in phylogenomic analyses could be due to insufficient phylogenetic signal, limitations in taxon and/or gene sampling, or systematic error. Here, we investigated why lophotrochozoan phylogeny has been such a difficult question to answer by identifying and reducing sources of sys…
Data from: Phylogenomics of Lophotrochozoa with consideration of systematic error
2016
Phylogenomic studies have improved understanding of deep metazoan phylogeny and show promise for resolving incongruences among analyses based on limited numbers of loci. One region of the animal tree that has been especially difficult to resolve, even with phylogenomic approaches, is relationships within Lophotrochozoa (the animal clade that includes molluscs, annelids, and flatworms among others). Lack of resolution in phylogenomic analyses could be due to insufficient phylogenetic signal, limitations in taxon and/or gene sampling, or systematic error. Here, we investigated why lophotrochozoan phylogeny has been such a difficult question to answer by identifying and reducing sources of sys…
Ethnicity and hepatitis C virus infection.
2004
Irak: una lectura dialógica
2006
Spatial Structures of the Philippines: Urbanization and Regional Inequalities
2017
This chapter examines the fundamental spatial structures of the Philippines. It defines the role and organization of the different levels of the administrative hierarchy (provinces, regions, cities and municipalities) down to the barangay and sitio/purok levels. This leads to the definition of the “urban” in the Philippines and the rise of urbanization in recent decades, from the original urban settlements of the Spanish era, with their patterns following the same rules as in Latin America (fort, church and plaza), to today’s cities. Forms of housing have evolved over time, from the archetypal bamboo/nipa hut (bahay kubo) and the urban stone and wood house of the elites (bahay na bato), now…
El acceso de los hijos de inmigrantes a la Educación Superior en España ¿una cuestión de origen étnico o de origen social?
2021
El presente trabajo se enmarca dentro de los estudios sobre la Dimensión Social de la Educación Superior (DOES). En él se estudia el peso que la posición socioeconómica tiene en el acceso a la Educación Superior de las segundas generaciones en España. Para ello analizamos la probabilidad de que los estudiantes con antecedentes migratorios y diferentes orígenes socioeconómicos realizaran estudios terciarios durante la segunda década del siglo XXI en contraste con la población autóctona de nuevo ingreso. En nuestros resultados encontramos diferencias significativas en el acceso a la universidad entre los jóvenes con edades comprendidas entre los 18 y 21 años, pertenecientes a las segundas gen…
Trending topics in orthodontics research during the last three decades: A longitudinal bibliometric study on the top‐cited articles
2020
Objective: To perform a bibliometric analysis on the top-cited articles over the last three decades from 1989 to 2018, using a longitudinal set-up, in order to analyse how articles' features have evolved over time. Setting and sample population: A sample of 312 articles divided into three subgroups of 104 top-cited articles for each decade were included. The h-index value was used to determine the sample size. Materials and methods: The articles were identified through a search in the category "dentistry oral surgery and medicine" of the Web of Science database. The information relative to the articles was collected. Descriptive statistics was used to describe the articles and the journals;…