Results 51 to 60 of about 104,668 (160)

Use and misuse of trait imputation in ecology: the problem of using out‐of‐context imputed values

open access: yesEcography, Volume 2025, Issue 6, June 2025.
Despite the progress in the measurement and accessibility of plant trait information, acquiring sufficiently complete data from enough species to answer broad‐scale questions in plant functional ecology and biogeography remains challenging. A common way to overcome this challenge is by imputation, or ‘gap‐filling' of trait values.
Lucas Damián Gorné   +28 more
wiley   +1 more source

Introducción a los Modelos Jerárquicos [PDF]

open access: yes, 2015
Curso sobre modelos lineales jerárquicosLa realidad educativa es: Compleja Multivariada Se desarrolla y cambia en el tiempo. Multinivel. “A mi parecer, nuestra investigación es la más difícil de todas... Hacemos ciencia bajo unas condiciones
Lizasoain, Luis
core  

Restricted Dispersal in the Late Successional Forest Tree Species Nothofagus Pumilio: Consequences Under Global Change

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
We aim to uncover the current and historic effective dispersal distances and characterize fine‐scale genetic structure in the forest tree species Nothofagus pumilio. Short seed dispersal distances mean N. pumilio distribution expansion capacity may be limited, especially in the context of global change.
C. Soliani   +8 more
wiley   +1 more source

Reglas que describen la deserción y permanencia en los estudiantes de la UAP Tianguistenco de la UAEM [PDF]

open access: yes, 2014
Se pretende encontrar cuál es el conjunto de reglas de conocimiento que pueden extraerse de aquellos estudiantes que han desertado o que permanecen en sus estudios universitarios tres años después de su ingreso.
GARCIA HERNANDEZ, RENE ARNULFO   +5 more
core  

When do citizen scientists record biodiversity? Non‐random temporal patterns of recording effort and associated factors

open access: yesPeople and Nature, Volume 7, Issue 4, Page 860-870, April 2025.
Abstract Citizen science data are increasingly used for ecological research, biodiversity conservation and monitoring. However, these data often present significant analytical challenges due to uneven recording efforts by citizen scientists. Biases caused by intra‐annual differences in levels of recording activity can be particularly severe, hindering ...
Inês T. Rosário   +3 more
wiley   +1 more source

Análisis comparativo de algoritmos de aprendizaje para predecir la evolución de pacientes con Daño Cerebral Adquirido [PDF]

open access: yes, 2011
ste trabajo presenta un análisis comparativo entre tres algoritmos de aprendizaje diferentes basados en Árboles de Decisión (C4.5) y Redes Neuronales Artificiales (Perceptrón Multicapa MLP y Red Neuronal de Regresión General GRNN) que han sido ...
Chausa Fernández, Paloma   +6 more
core  

Long‐term interventions by conservation and development projects support successful recovery of tropical peatlands in Amazonia

open access: yesPeople and Nature, Volume 7, Issue 4, Page 871-886, April 2025.
Abstract Rural communities in Amazonia rely on harvesting Mauritia flexuosa fruit, a dominant peatland palm, for their subsistence and income. However, these palms are felled to harvest the fruits, which has led to reduced resource availability due to the pressure exerted by the increasing fruit demand.
Eurídice N. Honorio Coronado   +24 more
wiley   +1 more source

Redes bayesianas para identificar perfiles de estudiante. Aplicación al estudio del abandono de las titulaciones de Informática en la Universidad de Castilla-La Mancha [PDF]

open access: yes, 2016
El abandono de los estudiantes es un problema que afecta a todas las universidades siendo más acusado en las titulaciones de las ramas de Ingeniería y Arquitectura. Como docentes del Grado de Ingeniería Informática de la Universidad de Castilla-La Mancha
Lacave, Carmen   +3 more
core  

Early detection strategies for invading tree pests: Targeted surveillance and stakeholder perspectives

open access: yesJournal of Applied Ecology, Volume 62, Issue 4, Page 857-871, April 2025.
We provide the first surveillance map for emerald ash borer incursions in GB with potential for deployment by government agencies and stakeholders concerned with biosecurity. Our framework establishes optimal surveillance locations depending on factors, including detection within different timeframes, knowledge certainty of entry pathways and ...
Vasthi Alonso Chávez   +11 more
wiley   +1 more source

Análisis de la eficacia de los modelos de árboles de decisión para la gestión de políticas promocionales centradas en la segmentación de clientes [PDF]

open access: yes, 2005
La segmentación de clientes resulta necesaria para la adecuada gestión de las políticas promocionales que, como el mailing, tienen como objetivo la captación de clientes ante el lanzamiento de un nuevo producto o servicio.
Brândao, Elísio (Coordinador)   +2 more
core  

Home - About - Disclaimer - Privacy