Results 11 to 20 of about 3,632 (220)

Experimental investigation of the dynamics of entanglement: Sudden death, complementarity, and continuous monitoring of the environment [PDF]

open access: yes, 2008
We report on an experimental investigation of the dynamics of entanglement between a single qubit and its environment, as well as for pairs of qubits interacting independently with individual environments, using photons obtained from parametric down ...
A. Salles   +17 more
core   +2 more sources

Production efficiency of nodal and zonal pricing in imperfectly competitive electricity markets

open access: yesEnergy Strategy Reviews, 2019
Electricity markets employ different congestion management methods to handle the limited transmission capacity of the power system. This paper compares production efficiency and other aspects of nodal and zonal pricing.
Mahir Sarfati   +2 more
doaj   +1 more source

Multiple characterization study on porosity and pore structure of calcium phosphate cements [PDF]

open access: yes, 2015
Characterization of the intricate pore structure of calcium phosphate cements is a key step to successfully link the structural properties of these synthetic bone grafts with their most relevant properties, such as in vitro or in vivo behaviour, drug ...
Canal Barnils, Cristina   +2 more
core   +2 more sources

Segurança real e virtual: os novos desafios das teorias de segurança

open access: yesMalala, 2016
O artigo objetiva, de forma sumária, discorrer sobre os desafios contemporâneos das teorias de segurança, sob a visão europeia, apresentando diversos teóricos com uma visão desde o surgimento da Política Europeia de Segurança e Defesa (PESD), passando ...
André E. R. S. Aprigio   +1 more
doaj   +1 more source

The Relative Contribution of Amyloid, Tau, Neurodegeneration, and Vascular Disease to Cognition and Cognitive Decline: A Cross‐National Study

open access: yesAlzheimer's &Dementia, Volume 21, Issue S2, December 2025.
Abstract Background Recent in vivo biomarker advancements have led to biological diagnostic and staging criteria for AD based on amyloid(“A”), tau(“T”), and neurodegeneration(“N”). However, the contribution of comorbid vascular(“V”) pathology and the relative influence of ATNV on cognitive performance and decline remains unclear, though is necessary to
Jeremy A. Tanner   +21 more
wiley   +2 more sources

Política europea de Seguridad y Defensa: una aproximación militar

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2008
El cambio de siglo ha confirmado la existencia de nuevos peligros: terrorismo transnacional, armas de destrucción masiva y la debilidad de algunos estados en práctica descomposición.
Félix Sanz Roldán
doaj   +1 more source

A Technique for Estimating the Absolute Gain of a Photomultiplier Tube

open access: yes, 2018
Detection of low-intensity light relies on the conversion of photons to photoelectrons, which are then multiplied and detected as an electrical signal.
Bamba, A.   +28 more
core   +1 more source

La crise européenne de l’internationalisme libéral : (Prix Marcel-Cadieux de l’International Journal) [PDF]

open access: yes, 2010
Le programme libéral international promu par l’Union européenne est en crise. En dépit d’un progrès partiel, la jeune politique de défense et de sécurité commune n’a pas atteint ses objectifs.
Haine, Jean-Yves
core   +1 more source

Teste de vocabulário auditivo por figuras: normatização e validação preliminares [PDF]

open access: yesAvaliação Psicológica, 2006
No teste de vocabulário auditivo TVF-Usp1, o examinador pronuncia 139 palavras; para cada uma, o examinando escolhe a figura correspondente dentre quatro. Para normatização e validação preliminares, 808 alunos (1a.-4a.
Fernando C. Capovilla   +1 more
doaj  

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