Results 51 to 60 of about 141,923 (177)

When and why to give shorebirds a head start

Conservation Biology, EarlyView.
Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson, Alex Nicol‐Harper, Rebecca Lee, Nigel S. Jarrett, Geoff M. Hilton   +4 more
wiley   +1 more source

Ramon Turró. L'opció pel mètode científic en l'estudi del comportament humà (Segona part)

Quaderns de Psicología, 2009
En este artículo se pretende explicar la preocupación de un científico catalán -Ramón Turró (1854-1926)- por las cuestiones filosóficas, especialmente las epistemológicas, y su incidencia en la definición del objeto de estudio de la psicologia y en la ...
Josep Roca i Balasch
doaj   +1 more source

An integrated approach to balance freshwater connectivity restoration and invasion risk

Conservation Biology, EarlyView.
Abstract Habitat fragmentation negatively affects many native migratory fish populations. However, this fragmentation can also prevent the spread and establishment of invasive species. We modified the dendritic connectivity index (DCI), a commonly used freshwater connectivity metric, to account for multiple invasive dispersal pathways in estimates of ...
Alex Arkilanian, David Coté, Yolanda F. Wiersma, Richard Pither   +3 more
wiley   +1 more source

An experimental approach to assess the combined effects of multiple stressors on a large vertebrate species

Conservation Biology, EarlyView.
Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta, Catriona M. Harris, Lori H. Schwacke, Len Thomas, Jason B. Allen, Aaron A. Barleycorn, Marco Casoli, Jonathan Crossman, Laura Aichinger Dias, Laura Engleby, Erin LaBrecque, Jenny A. Litz, Katherine A. McHugh, Patrick J. O. Miller, Michael J. Moore, Theoni Photopoulou, Brian M. Quigley, Cynthia R. Smith, Brandon L. Southall, Todd R. Speakman, Ryan Takeshita, Christina N. Toms, Randall S. Wells, Eric S. Zolman, Peter L. Tyack   +24 more
wiley   +1 more source

El mètode Urban i la seva difusió com a valor afegit principal de la iniciativa comunitària

Documents d'Anàlisi Geogràfica, 2009
La iniciativa comunitària Urban ha estat el principal instrument operatiu per a la regeneració urbana en el marc de la política regional de la Unió Europea durant els períodes 1994-1999 i 2000-2006. Un dels valors afegits principals de la iniciativa rau
Aaron Gutiérrez Palomero
doaj   +1 more source

Constraint Programming based Local Search for the Vehicle Routing Problem with Time Windows [PDF]

, 2012
El projecte es centra en el "Vehicle Routing Problem with Time Windows". Explora i testeja un mètode basat en una formulació del problema en termes de programació de restriccions.
Sala Reixach, Joan
core  

Constructed value of information with iterative scoring and parametric uncertainty to identify management‐relevant research priorities for a declining raptor species

Conservation Biology, EarlyView.
Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis, Mitchell J. Eaton, Emily R. Bjerre, Hillary M. White, Clint W. Boal, Jennifer H. Herner‐Thogmartin, Orin J. Robinson, Abigail J. Lawson   +7 more
wiley   +1 more source

El mètode de quadratures de Fermat [PDF]

, 2011
El Tractat de quadratures de Fermat (c. 1659) és conegut perquè conté la primera demostració de la qual hom té constància del còmput de l'àrea sota una paràbola superior, $\int x^{+m/n} dx$, o una hipèrbola superior, $\int x^{-m/n} dx$ —amb els límits d ...
Paradís, Jaume, Pla i Carrera, Josep, Viader i Canals, Pelegrí   +2 more
core  

Defining and identifying relevant stakeholders to advance effective conservation

Conservation Biology, EarlyView.
The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher, Felix Przesdzink, Christian Wilhelmy, Laura Herzog, Johannes Halbe, Florian Fiebelkorn   +5 more
wiley   +1 more source

Sostenibilitat en el transport: optimització del consum de combustible [PDF]

, 2007
La reducció del dispendi d’energia d’un vehicle es pot minimitzar mitjançant un ús adequat del sistema propulsor. El mètode desenvolupat implica l’elaboració d’un model numèric del vehicle i una descripció matemàtica de la via (perfil altimètric i traçat)
Llumà Fuentes, Jordi, Manzanares Brotons, Manuel   +1 more
core