Results 41 to 50 of about 113,933,830 (108)

Shaping the extinction burst: Increasing its probability and preventing its emergence across topographies

open access: yesJournal of the Experimental Analysis of Behavior, Volume 126, Issue 1, July 2026.
Abstract Extinction bursts are traditionally described as transient increases in response rate following the discontinuation of reinforcement. However, their underlying mechanisms remain under debate. This study examined whether extinction bursts are modulated by the contingencies across multiple extinction exposures.
Marlon Palomino   +4 more
wiley   +1 more source

NEXO, Revista del Profesorado de Cantabria

open access: yesCabás, 2013
Los cambios vertiginosos que se producen en la sociedad actual y, como consecuencia de ello, en la educación, hacen que una revista profesional como NEXO, realizada desde la Dirección Provincial del Ministerio de Educación y Ciencia de ...
Miguel Ángel García de la Santa y de la Torre
doaj  

The Paleoenvironment of the Ndutu Bed at Olduvai Gorge in the Context of Middle Stone Age Expansion in Eastern Africa: A Multiproxy Approach to Ungulate Analyses From the Victoria Cabrera Site and Dorothy Garrod Site (MIS 5)

open access: yesInternational Journal of Osteoarchaeology, Volume 36, Issue 4, Page 1100-1113, July/August 2026.
ABSTRACT The study of the Eastern African archaeological record is essential for understanding the origin and evolution of the Middle Stone Age (MSA). However, Olduvai Gorge, one of the primary regions in human evolution studies, has few sites associated with the MSA.
Juan Marín   +8 more
wiley   +1 more source

A distancia UNED. 3/1987

open access: yes, 1987
Revista A distancia UNED. 3/1987.
Universidad Nacional de Educación a Distancia (España)
core  

Laboratorios virtuales para el aprendizaje en ingeniería civil a distancia

open access: yesAcademia y Virtualidad, 2008
Una vez creado el Grupo de investigación ICDIST, perteneciente al Programa de Ingeniería Civil del Instituto de Educación a Distancia de la UMNG, se identificó la necesidad de establecer una línea de investigación en creación de modelos de ...
Carol E. Arévalo Daza   +1 more
doaj  

“Cold Tropics”: Permafrost Existence and Thickness on Eastern Nevado Coropuna (Southern Peruvian Andes) Revealed by Ground‐Penetrating Radar and Geoelectrical Soundings

open access: yesPermafrost and Periglacial Processes, Volume 37, Issue 3, Page 517-534, July/September 2026.
ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca   +6 more
wiley   +1 more source

A distancia UNED. 4/1987

open access: yes, 1987
Revista A distancia UNED. 4/1987.
Universidad Nacional de Educación a Distancia (España)
core  

A distancia UNED. Otoño 1996

open access: yes, 1996
Revista A distancia UNED.
Universidad Nacional de Educación a Distancia (España)
core  

A distancia UNED. Otoño 1993

open access: yes, 1993
Revista A distancia UNED. Otoño 1993.
Universidad Nacional de Educación a Distancia (España)
core  

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