Results 41 to 50 of about 923,357 (226)

“Does a Respiratory Virus Have an Ecological Niche, and If So, Can It Be Mapped?” Yes and Yes

open access: yesTropical Medicine and Infectious Disease, 2023
Although the utility of Ecological Niche Models (ENM) and Species Distribution Models (SDM) has been demonstrated in many ecological applications, their suitability for modelling epidemics or pandemics, such as SARS-Cov-2, has been questioned.
Christopher R. Stephens   +2 more
doaj   +1 more source

The role of Central American Trade in developing El Salvador’s high-value exports [PDF]

open access: yes, 2020
This paper describes the development and evolution of El Salvador’s industrial exports. This paper found that El Salvador’s exports to other Central American countries enhance business opportunities observed in an increase in the number of new products ...
Castro, Eleno
core  

Criminología & complejidad humana

open access: yesJusticia, 2013
El presente artículo de refl exión registra cómo históricamente el ser humano ha tratado de explicar usando disímiles medios provenientes de las diferentes ciencias humanas y naturales, el origen y causa del delito en la sociedad, diversifi cando las múltiples explicaciones sobre el móvil de las conductas delictivas que emanan del ser humano.
openaire   +2 more sources

A Multilevel Perspective on Governance and System Integration in Large‐Scale Civil Infrastructure Systems: The Cases of Crossrail and HS2

open access: yesJournal of Critical Infrastructure Policy, Volume 7, Issue 2, Fall/Winter 2026.
ABSTRACT This study explores governance and systems integration challenges in complex infrastructure megaprojects through a comparative qualitative analysis of the UK's Crossrail and High Speed 2 programs. Drawing on project documentation and interview evidence, it examines how strategic pressures, institutional governance arrangements, and project ...
Seraj Kindakji, Mikela Chatzimichailidou
wiley   +1 more source

High-dose vitamin D versus placebo to prevent complications in COVID-19 patients: A structured summary of a study protocol for a randomised controlled trial (CARED-TRIAL)

open access: yesTrials, 2021
Objectives To evaluate whether a single high dose of oral cholecalciferol improves the respiratory outcomes as compared with placebo among adults COVID-19 patients at moderate risk of clinical complications.
Javier Mariani   +5 more
doaj   +1 more source

Fístula colecistocolónica como complicación de cáncer de vesícula avanzado

open access: yesRevista de la Facultad de Ciencias Médicas de Córdoba, 2022
La fístula colecistocolónica (FCC) es la segunda fístula colecistoentérica más común, asociada en la mayoría de los casos a enfermedad litiásica. Los síntomas suelen ser mínimos o inespecíficos, siendo infrecuente su diagnóstico preoperatorio.
Rodrigo Antonio Gasque   +5 more
doaj   +1 more source

Complejidad y ciencias sociales [PDF]

open access: yes, 2007
En l’article l’autor argumenta per la necessària ampliació del que es ve coneixent de forma majoritària per Teoria de la Complexitat (anomenada per Morin la ‘complexitat restringida’) a partir de les contribucions de les ciències socials i de la ...
Stahel, Andri Werner
core  

Complejidad: una introducción

open access: yesCiência & Saúde Coletiva, 2011
Las ciencias de la complejidad aparecen en el siglo XX como una forma de entender muchos fenómenos que se perciben caóticos, predecibles y complejos desde la forma del pensamiento clásico y que todavía perduran en nuestra forma de explicar el mundo. Su objeto es estudiar los sistemas adaptativos complejos que son sensibles a las condiciones iniciales e
Gómez, Carlos Alberto Palacio   +1 more
openaire   +3 more sources

Assessing contributions of deterministic versus stochastic processes to local species assembly: A field experiment with annual plant‐dominated communities in gypsum systems

open access: yesJournal of Ecology, Volume 114, Issue 3, March 2026.
In this study, we experimentally show that stochasticity can play prominent roles in driving local species assembly in annual plant‐dominated communities of semiarid gypsum ecosystems. Drylands are traditionally viewed as restrictive environments that impose strong deterministic filtering effects, but neutral events can also contribute decisively to ...
Laura Ortiz   +3 more
wiley   +1 more source

Evolucionismos y teoría de la Complejidad [PDF]

open access: yes, 2006
En el libro Complejidad: ciencia, pensamiento y aplicación Maldonado (2007), sostiene que existen dos grandes comprensiones de complejidad ''indiferentes entre sí, distantes incluso".
Cruz, Mariana, Estrabou, Cecilia
core  

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