Results 11 to 20 of about 665 (146)

Normal y lognormal: dos distribuciones de frecuencias y una Teoría Neutral Unificada para estudiar los bosques tropicales [PDF]

open access: yesRevista Peruana de Biología, 2018
Los inventarios de biodiversidad en sitios contrastantes obtienen datos con distribuciones normales y lognormales, útiles para cuantificar cómo el cambio climático afecta a los bosques del mundo.
Edgardo I. Garrido-Pérez   +5 more
doaj   +3 more sources

Predicción y selección de variables con bosques aleatorios en presencia de variables correlacionadas [PDF]

open access: yes, 2019
This thesis addresses the problem of variable selection using the random forest method when the underlying model for the response variable is linear. To this end, simulated data sets with di_erent characteristics are con_gured and then, the methodology applied, and the prediction error measured each time a variable is eliminated.
Cardona Alzate, Néstor Iván
openaire   +3 more sources

Patrones de distribución de especies arbóreas de dosel y sotobosque a escala local en bosques de tierra firme, Amazonia colombiana

open access: yesRevista de Biología Tropical, 2014
El efecto de la variación ambiental en la estructura de las comunidades arbóreas en bosques tropicales, aún se debate. En paisajes como los bosques de tierra firme, donde el gradiente ambiental disminuye, el efecto de los suelos sobre los patrones de ...
Juan Sebastian Barreto-Silva   +2 more
doaj   +2 more sources

Aprovechamiento de productos forestales no maderables en los bosques de montaña alta, centro de México

open access: yesRevista Mexicana de Ciencias Forestales, 2017
Se describe la forma de aprovechamiento de tres Productos Forestales No Maderables (PFNM) en los bosques de montaña alta del centro de México: vara de perlilla (Symphoricarpos microphyllus), musgo (Thuidium delicatulum var.
Nancy Diana Anastacio-Martínez   +3 more
doaj   +3 more sources

Mapeo de la susceptibilidad a deslizamientos de tierra usando Redes Neuronales Artificiales y Bosques Aleatorios

open access: yesRevista UIS Ingenierías
A nivel mundial, los deslizamientos de tierra causan miles de muertes cada año, según la Organización de Naciones Unidas (ONU) este fenómeno asociado al Cambio Climático ha mostrado un aumento del 50% en la última década, presentándose a un ritmo de ...
Janer Rafael Cantillo- Romero   +2 more
doaj   +2 more sources

Clasificación digital de masas nubosas a partir de imágenes meteorológicas usando algoritmos de aprendizaje de máquina

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
La identificación exacta de nubes precipitantes es una tarea difícil. En el presente trabajo se aplicaron los algoritmos Máquinas de Soporte Vectorial, Árboles de Decisión y Bosques Aleatorios para discriminar entre nubes precipitantes y nubes no ...
Salomón Einstein Ramírez-Fernández   +1 more
doaj   +1 more source

Using comparative extinction risk analysis to prioritize the IUCN Red List reassessments of amphibians. [PDF]

open access: yesConserv Biol
Abstract Assessing the extinction risk of species based on the International Union for Conservation of Nature (IUCN) Red List (RL) is key to guiding conservation policies and reducing biodiversity loss. This process is resource demanding, however, and requires continuous updating, which becomes increasingly difficult as new species are added to the RL.
Lucas PM   +8 more
europepmc   +2 more sources

Quality of government and women's political empowerment: Evidence from European regions

open access: yesPapers in Regional Science, Volume 102, Issue 6, Page 1067-1096, December 2023., 2023
Abstract This study examines the relationship between women's political empowerment (WPE) and the quality of government (QoG) in European regions. The analysis considers both the endogeneity of the QoG and female empowerment, and their spatial interdependence.
Vicente Rios   +4 more
wiley   +1 more source

Identifying socioeconomic and biophysical factors driving forest loss in protected areas

open access: yesConservation Biology, Volume 37, Issue 4, August 2023., 2023
Abstract Protected areas (PAs) are a commonly used strategy to confront forest conversion and biodiversity loss. Although determining drivers of forest loss is central to conservation success, understanding of them is limited by conventional modeling assumptions.
Kathryn A. Powlen   +3 more
wiley   +1 more source

Evaluating the determinants of support for police militarization among officers

open access: yesPolitics &Policy, Volume 51, Issue 4, Page 636-660, August 2023., 2023
Abstract We evaluate the determinants of officer support for their agency participating in the 1033 Program: a program that facilitates the flow of military hardware to local law enforcement agencies. In doing so, we provide insight into why officers demand such equipment, which, in turn, may partially explain patterns of program participation and ...
Ryan M. Welch   +3 more
wiley   +1 more source

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