Results 61 to 70 of about 487,817 (212)

La reinvención del Opanal para el nuevo orden mundial

open access: yesEstado & Comunes, 2019
Tras la Crisis de los Misiles, en 1962, la región latinoamericana y caribeña vivió un proceso integrador impulsado por la amenaza a la seguridad del continente, producto de la instalación de los misiles soviéticos en Cuba.
Diana Velalcázar Rea
doaj  

Assessment of Hydraulic Oil Properties during Operation of a Mini Loader

open access: yesLubricants
This study employs a rigorous methodology to assess the condition of the hydraulic oil in a recently introduced mini skid-steer loader. The assessment is conducted through laboratory analysis, which adheres to a range of international standards.
Diego Andrés Duque-Sarmiento   +1 more
doaj   +1 more source

Efecto fitotóxico del material particulado PM10 recolectado en el área urbana de la ciudad de Cuenca, Ecuador

open access: yesIteckne, 2019
Los contaminantes atmosféricos causan efectos adversos sobre los vegetales, no obstante, a ciencia cierta, se desconoce el efecto del PM10 sobre estos, la presente investigación tiene por objeto determinar el efecto fitotóxico de extractos acuosos de ...
Diana Lucía Moscoso-Vanegas   +4 more
doaj   +1 more source

¿Son útiles las “métricas espaciales fragstats” para caracterizar entornos de movilidad urbanos? [PDF]

open access: yes, 2014
El objetivo de alcanzar una mayor sostenibilidad ambiental en la planificación del transporte urbano ha sido una de las principales razones del desarrollo de conceptos, métodos y herramientas orientadas a vincular de manera efectiva la estructura urbana ...
Aguilera Benavente, Francisco   +2 more
core  

Thermal noise lowers the accuracy of rotationally invariant harmonics of diffusion MRI data and their robustness to experimental variations

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 1, Page 204-219, January 2026.
Abstract Purpose Rotational invariants (RIs) are at the root of many dMRI applications. Among others, they are presented as a sensible way of reducing the dimensionality of biophysical models. While thermal noise impact on diffusion metrics has been well studied, little is known on its effect on spherical harmonics‐based RI (RISH) features and derived ...
Guillem París   +5 more
wiley   +1 more source

Deep Learning Approaches for Effective Fog Detection

open access: yesIET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This paper presents an innovative system for detecting foggy road scenarios and classifying visibility levels to provide timely alerts to drivers, thereby enhancing road safety. The authors introduce two new image datasets, Foggy‐Ceit 2023 and an extended Foggy CityScapes – DBF, and evaluate the performance of classical vision techniques and deep ...
Olatz Iparraguirre   +3 more
wiley   +1 more source

TOWARDS A DEGROWTH CRITIQUE OF AEROMOBILITIES: An Urban Political Ecology Perspective on the Airport Expansion Resistance in Barcelona

open access: yesInternational Journal of Urban and Regional Research, Volume 49, Issue 6, Page 1399-1416, November 2025.
Abstract Aeromobilities—socio‐technical systems that lock in dependence on fossil fuel‐based mobilities—contribute substantially to climate change and uneven geographies. They represent paradigmatic capitalism‐driven forms of metabolism, permeated by logics of efficiency and growth. While existing literature has examined resistance to airport expansion,
Ersilia Verlinghieri   +3 more
wiley   +1 more source

Movilidad de la enseñanza intergeneracional y condiciones macro y políticas de enseñanza en América Latina [PDF]

open access: yes
(Disponible en idioma inglés únicamente) Los efectos de las reformas de mercado y de políticas sobre la pobreza y la desigualdad en América Latina han sido motivo de considerable preocupación.
Jere R. Behrman   +2 more
core  

Diagnóstico de la gestión de Relaciones Públicas en la movilidad estudiantil en 2014. Caso: Facultad de Ciencias de la Comunicación UANL [PDF]

open access: yes, 2015
El estudio que se presenta tiene como planteamiento que en la Coordinación de Movilidad Estudiantil de la Facultad de Ciencias de la Comunicación-UANL se realiza un estudio cuyo objetivo general es determinar los procesos de relaciones públicas en la ...
Díaz Montalvo, José   +1 more
core  

Three-dimensional microstructuring of yttrium aluminum garnet crystals for laser active optofluidic applications [PDF]

open access: yes, 2013
The following article appeared in Applied Physics Letters 103.4 (2013): 041101 and may be found at http://scitation.aip.org/content/aip/journal/apl/103/4/10.1063/1.4816338We demonstrate three-dimensional microstructuring in a neodymium doped yttrium ...
Choudhury, Debaditya   +5 more
core   +2 more sources

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