Results 31 to 40 of about 59,035,836 (154)

Surveillance of ash trees under multiple threats: Integrating emerald ash borer and ash dieback dynamics with stakeholder behaviour

open access: yesJournal of Applied Ecology, Volume 63, Issue 3, March 2026.
Tree‐health policies must balance identifying likely entry points and deployment of traps, targeted information campaigns and surveillance subsidies for land managers. Our unique, cross‐disciplinary approach can be applied to other pest/pathogen systems to inform tree‐health plans and how to balance resources.
Vasthi Alonso Chávez   +11 more
wiley   +1 more source

Equilibrios de respuesta cuántica para mercados de ofertas públicas

open access: yesEstudios Económicos, 1997
Existe una creciente literatura experimental sobre teoría de juegos y organización industrial que revela desviaciones sistemáticas del equilibrio de Nash.
Gladys López Acevedo
doaj   +1 more source

Integrating data to assess occupancy patterns of an endangered bumble bee

open access: yesConservation Biology, Volume 39, Issue 4, August 2025.
Abstract There is growing interest in integrating community science data with structured monitoring data to estimate changes in distribution patterns of imperiled species, including pollinators. However, significant challenges remain in determining how unstructured community science data should be incorporated into formal analyses of species ...
Kristen S. Ellis   +5 more
wiley   +1 more source

SAVE YOUR INTERNET! The persuasion work of YouTube in the controversy over EU's digital market directive

open access: yesPolicy &Internet, Volume 17, Issue 2, June 2025.
Abstract The introduction of EU's Digital Market Directive, especially the so‐called Article 13, caused a lot of controversy. A varied assembly of actors protested, including Internet activists, academics, NGO's such as Wikipedia, and owners of platforms for user generated content. They feared regulations would stifle the distribution of user generated
Madelen Riise   +2 more
wiley   +1 more source

Valoración de derivados europeos con mixtura de distribuciones Weibull [PDF]

open access: yes, 2014
El modelo Black-Scholes para valoración de opciones europeas se usa bastante en el mercado por su fácil ejecución. Sin embargo, empieza a ser poco preciso en diferentes activos cuya dinámica no es de una distribución lognormal, por lo que se necesita ...
Molina, Andrés Mauricio   +4 more
core   +1 more source

Operadores pseudodiferenciales definidos en medidas de Borel

open access: yesRevista Integración, 2013
En este trabajo se introduce un tipo de operadores pseudodiferenciales definidos en medidas de Borel. Clásicamente la definición de operadores pseudodiferenciales se extiende al espacio de las distribuciones temperadas; sin embargo, en su representación ...
Duván Cardona
doaj   +4 more sources

La recepción de la obra de Jean-Baptiste Say en España: la teoría económica del empresario [PDF]

open access: yes, 2005
Este trabajo analiza la difusión de la teoría del empresario de Jean-Baptiste Say en España, como último eslabón de una línea de pensamiento que tiene su origen en Richard Cantillon. Se prueba que la particularidad de este autor es su gran difusión en
Menudo, José Manuel   +1 more
core   +2 more sources

Simplification of woody plant trait networks among communities along a climatic aridity gradient

open access: yesJournal of Ecology, Volume 113, Issue 4, Page 896-912, April 2025.
Hypothesized associations of plant trait network parameters with climatic aridity and ecosystem structure and with trait coefficients of variation across six plant communities of the California Floristic Province. (a) Across this gradient, the climatic aridity increased from the mixed conifer‐broadleaf forest site to the desert site.
Camila D. Medeiros   +7 more
wiley   +1 more source

Efecto de la especificación incorrecta en el modelo de regresión beta con intercepto aleatorio

open access: yesRevista de la Facultad de Ciencias, 2018
La estimación en el modelo de regresión beta mixto esta usualmente La estimación en el modelo de regresión beta mixto esta usualmente basada en la teoría de máxima verosimilitud, asumiendo que el modelo esta correctamente especificado.
Olga Cecilia Usuga Manco
doaj   +1 more source

A practical approach to meeting national obligations for sustainable trade under CITES

open access: yesConservation Biology, Volume 38, Issue 5, October 2024.
Abstract Reconciling conservation goals with sustainable resource use requires adaptive management strategies. The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) regulates global trade for species listed on Appendix II, partly by requiring member countries (parties) to ensure exports do not damage wild ...
Tanvi Vaidyanathan   +3 more
wiley   +1 more source

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