Results 1 to 10 of about 2,725,559 (208)

First scenic assessment of the Coiba National Park’s beaches (Panama)

open access: yesMarine and Fishery Sciences, 2023
Coiba National Park (PNC) is one of the most important marine protected areas in the Americas, as an essential part of the Eastern Tropical Pacific Marine Corridor.
Camilo M. Botero   +3 more
doaj   +1 more source

THE IMPACT OF SCHEMA THEORY ON IMPROVING UNIVERSITY STUDENTS' WRITING PERFORMANCE

open access: yesمجلة الدراسات الاجتماعية, 2023
This study aimed to investigate the impact of applying schema theory in teaching and improving the English writing skills. It adopted a quasi-experimental-control group design.
Abdulmalik Mohammad Alawdi
doaj   +1 more source

DE VUELTA A TRANSFORMACIONES DE LA TIERRA. LEYENDO A DONALD WORSTER DESDE AMÉRICA LATINA.

open access: yesDiálogos, 2012
En este artículo se presenta una relectura del ensayo “Nuestra tierra” de Donald Worster, la misma se desarrolla desde la visión que maneja América Latina con respecto a la historia ambiental.
Guillermo Castro Herrera
doaj   +3 more sources

Islamic Manuscripts of Meranaw Muslims In Mindanao: An Inquiry of The Richness of The Intellectual Heritage

open access: yesAl-Albab, 2021
This inquiry on the Islamic manuscripts intends to illuminate the rich artistic and intellectual writing traditions of the Meranaw Muslims in the Philippines.
Labi Hadji Sarip Riwarung
doaj   +1 more source

Enhancing Si Solar Cells Efficiency by Using by adding SiO2 / TiO2 Thin Films using Transfer Matrix Method

open access: yesEast European Journal of Physics, 2021
Thin film silicon solar cells are nowadays the best choice to get electricity due to their low cost compared to the crystalline solar cells. However, thin film silicon solar cells have weak absorption of incident light.
Wedad Ahmed Abdullah Garhoom   +1 more
doaj   +1 more source

Exponential ε-tracking and ε-stabilization of second-order nonholonomic SE(2) vehicles using dynamic state feedback [PDF]

open access: yes, 2002
In this paper, we address the problem of ε-tracking and ε-stabilization for a class of SE(2) vehicles with second-order nonholonomic constraints. We introduce a class of transformations called near-identity diffeomorphism that allow dynamic partial ...
Olfati-Saber, Reza
core   +1 more source

SABER [PDF]

open access: yesProceedings of the 54th Annual Design Automation Conference 2017, 2017
A wide variety of error tolerant applications supports the use of approximate circuits that achieve power savings by introducing small errors. This paper proposes a fast and novel algorithm for the design of such circuits with the goal of maximizing power savings, constrained by a fixed error budget, through an analytical expression to optimally select
Deepashree Sengupta   +3 more
openaire   +2 more sources

Sociedades, ambiente y ambientalismos en nuestra América

open access: yesHistoria Ambiental Latinoamericana y Caribeña, 2019
El ambiente es entendido aquí como el producto de las intervenciones humanas en el entorno natural mediante procesos de trabajo socialmente organizados.
Guillermo Castro Herrera
doaj   +1 more source

Basal complex: a smart wing component for automatic shape morphing

open access: yesCommunications Biology, 2023
Insect wings are adaptive structures that automatically respond to flight forces, surpassing even cutting-edge engineering shape-morphing systems. A widely accepted but not yet explicitly tested hypothesis is that a 3D component in the wing’s proximal ...
Sepehr H. Eraghi   +8 more
doaj   +1 more source

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