Results 31 to 40 of about 44,252 (234)
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo +37 more
wiley +1 more source
Declaración de Mar del Plata. Mar del Plata, Provincia de Buenos Aires, 4 de diciembre de 2010. Declaración especial sobre la Defensa de la democracia y el orden constitucional en Iberoamérica.
Cumbre Iberoamericana
doaj
Análisis de la incertidumbre en la medición del nivel cognitivo usando Lógica Difusa
El objetivo del presente artículo es formular un enfoque del tratamiento de la incertidumbre en la medición del estado cognitivo. Esta incertidumbre se origina en la apreciación subjetiva del evaluador de las acciones del estudiante, sujeta a su ...
Constanza Raquel Huapaya +3 more
doaj +1 more source
From armed roots to airline routes in South America: A dual imprinting perspective
Abstract Reserch Summary We propose that founding partner relationships can leave distinct imprints on organizations that differ in durability and in how they respond to subsequent changes involving the founding partner. Examining South American airlines founded between 1919 and 1984, we argue and find that such relationships simultaneously create an ...
Kunyuan Qiao +2 more
wiley +1 more source
This paper proposes the design and implementation of a vector network analyzer for frequencies up to 300 MHz. The device has the ability to measure the amplitude ratio and phase difference of the reflected and transmitted signal of a system under test ...
Brian Maximiliano Gluzman +5 more
doaj +1 more source
PLL-less Robust DeadBeat-response Direct Power Control of Grid-Tie Three-Phase Inverters
A new type of PLL-less Direct Power Control with robust implementation and deadbeat response is presented for grid-tie inverters. In this work a novel positive sequence detector is also implemented which ensures the elimination of perturbation at the ...
J.R. Fischer +4 more
doaj +1 more source
Evaluación de Desempeño en la Universidad Nacional de Mar del Plata. [PDF]
La Universidad Nacional de Mar del Plata , fue fundada en el año 1961 y hoy es una entidad educativa que alberga a nueve facultades con una matricula de 24.170 estudiantes.
Maestromey, Marcelina
core
A Very Social History: South American Cricketing Tourists in Britain in 1932
Abstract Drawing on both the rich Anglophone cricket historiography and the new Latin American sports scholarship, this article maps out the entangled global networks that shaped the tour of Britain made in 1932 by a team of South American cricketers.
Matthew Brown
wiley +1 more source
El proceso de escolarización de la población infantil con diagnóstico de Trastorno por Déficit de Atención con Hiperactividad (TDAH) plantea desafíos en el ámbito educativo, ya que sus síntomas pueden afectar el rendimiento académico. Es fundamental que
Josefina Rubiales +2 more
doaj +1 more source
Diferentes investigaciones han advertido sobre el impacto, comparativamente bajo, que presenta la formación inicial en el ejercicio profesional respecto de otras instancias formativas propias del desarrollo profesional docente. En este
Guillermo Cutrera +1 more
doaj +1 more source

