Results 91 to 100 of about 568,315 (281)

Resource windfalls and political sabotage: Evidence from 5.2 million political ads

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract We study the role of incentives in inducing sabotage in political contents, vis‐à‐vis natural resource windfalls. The latter induce plausibly exogenous increases in contests' stakes by extending opportunities for policy implementation or private gain upon winning and enhancing incumbent advantage.
David Lagziel, Ehud Lehrer, Ohad Raveh
wiley   +1 more source

Seguridad en bases de datos

open access: yesRevista Cubana de Ciencias Informáticas, 2011
Los sistemas de base de datos son de gran uso, el cual va desde el uso de bases de datos ligeras, bases de datos en tiempo real (en algunas ocasiones obtenida a partir de la optimización de bases de datos relacionales) y bases de datos relacionales con ...
Heidy Alina Nuevo León   +1 more
doaj  

Bases de datos

open access: yes, 2011
Este texto se ha elaborado para dar soporte a un curso sobre Bases de Datos orientado a las Ingenierías Informáticas. Los cuatro primeros capítulos realizan un estudio del modelo relacional: la estructura de datos, las reglas para mantener la integridad de la base de datos y los lenguajes relacionales, que se utilizan para manipular las bases de datos.
openaire   +2 more sources

Representativeness of the Natura 2000 network for preserving plant biodiversity in the European Union

open access: yesConservation Biology, EarlyView.
Abstract The Natura 2000 (N2K) network of protected areas is one of the main tools for area‐based conservation in the European Union (EU), yet its role in preserving plant biodiversity requires better understanding. We examined data kept in the European Vegetation Archive from over 1.2 million vegetation plots and obtained over 14.2 million plant ...
Michele Di Musciano   +41 more
wiley   +1 more source

Strengthening community‐based fisheries monitoring programs with Indigenous perspectives

open access: yesConservation Biology, EarlyView.
Abstract Community‐based monitoring (CBM) programs are increasingly recognized as essential for adaptive environmental stewardship. Yet, the CBM literature often highlights successful cases and privileges evaluations by external experts over those of community members themselves.
Kanwaljeet Dewan   +2 more
wiley   +1 more source

Prioritizing bat roosts for conservation with a global multicriteria bat roost priority index based on community science

open access: yesConservation Biology, EarlyView.
Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch   +6 more
wiley   +1 more source

A link between increased temperature and avian body condition in a logged tropical forest

open access: yesConservation Biology, EarlyView.
Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi   +7 more
wiley   +1 more source

Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves

open access: yesConservation Biology, EarlyView.
Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey   +39 more
wiley   +1 more source

Presencia de las bases de datos del CSIC en las bibliotecas universitarias y científicas españolas: descripciones y materiales didácticos para la formación de usuarios

open access: yesRevista Española de Documentación Científica, 2009
Luis Rodríguez-Yunta   +2 more
doaj   +1 more source

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