Search results for "RCA"
showing 10 items of 3171 documents
Robust consensus in social networks and coalitional games
2014
We study an n-player averaging process with dynamics subject to controls and adversarial disturbances. The model arises in two distinct application domains: i) coalitional games with transferable utilities (TU) and ii) opinion propagation. We study conditions under which the average allocations achieve robust consensus to some predefined target set.
Los 'think-tanks' y los 'neocons' / 1
2008
Developmental Changes and Daily Rhythm in Melatonin-Induced Inhibition of 3′,5′-Cyclic AMP Accumulation in the Rat Pituitary
1990
Melatonin's transduction mechanisms were investigated using in vitro cultured anterior hemipituitaries. Melatonin inhibited cAMP and 3',5'-cyclic GMP accumulation in neonatal rat anterior pituitary stimulated with LHRH. Maximal inhibitory effect was reached within 25 min and persisted for at least 20 min. Inhibition of cAMP accumulation is specific for melatonin because its analogs N-acetylserotonin and 5-methoxytryptamine are 1000 times less potent. Melatonin effect is age- and time-dependent. Marked inhibition was observed in 5-, 10-, and 14-day-old rats but not in 29-day-old ones. Melatonin was significantly more potent when applied at the end of the light period as compared with the fir…
Alesa Arconidea (Tusa): proposta ricostruttiva dell’agora tardo ellenistica
2022
In the second half of the second century BC, in the wake of the building renovation that affected the most important urban centers of northern Sicily, even the ancient city of Alesa Arconidea remodeled its monumental structure. The agora/forum, in particular, was restructured in a scenographic system, acquiring the architectural characteristics of a typical Hellenistic monumental complex, similar to those of Greece and Asia Minor, by which it was influenced. In planimetric terms, to date up to the present time, the agora represents a unicum in Sicily because of its Π shape with deep double columns of the arcade, which enclose a large square excluded to vehicular traffic. Recent researches a…
Bifurcations of Links of Periodic Orbits in Non-Singular Systems with Two Rotational Symmetries on S3
1997
A topological characterization of all possible links composed of the periodic orbits of a Non Singular Morse-Smale flow on S3 has been made by M. Wada. The presence of symmetry forces the appearance of given types of links. In this paper we introduce a geometrical tool to represent these type of links when a symmetry around two axes is considered on NMS systems: mosaics. On the other hand, we use mosaics to study what kind of bifurcation can occur in this type of system maintaining the symmetry.
Arcadio Blasco: : Cinco esculturas urbanas (1986-1991)
2013
Con las primeras elecciones municipales democráticas en España después del franquismo, los nuevos ayuntamientos establecieron programas para reconstruir las ciudades españolas. Un aspecto de estos proyectos fue la creación de espacios públicos donde la gente pudiera encontrarse en un ambiente agradable. Estas áreas se cerraron al tránsito y se amueblaron con árboles, bancos y un nuevo tipo de esculturas artísticas. En la zona de Alicante, el ceramista Arcadio Blasco, ya conocido en Madrid y en Roma, creó cinco monumentos urbanos de gran escala. Después de veinte años, el destino de cada escultura ha sido diferente: alguna permanece en buenas condiciones, pero otras han sido tratadas de tal …
EAACI Position paper on the standardization of nasal allergen challenges.
2018
DR. FARID, S.H. M.H. M. Kn. - FR FARID/0000-0003-0372-4963; Gevaert, Philippe/0000-0002-1629-8468; Hox, Valerie/0000-0003-2390-294X; Wagenman, Martin/0000-0002-9734-0241; Vent, Julia/0000-0001-5071-9580 WOS: 000438710600002 PubMed: 29377177 Nasal allergen challenge (NAC) is an important tool to diagnose allergic rhinitis. In daily clinical routine, experimentally, or when measuring therapeutic success clinically, nasal allergen challenge is fundamental. It is further one of the key diagnostic tools when initiating specific allergen immunotherapy. So far, national recommendations offered guidance on its execution; however, international divergence left many questions unanswered. These differ…
El capitalismo, contra el planeta / 2
2007
Antecedentes y consecuencias del Amor a la marca deportiva 2.0
2018
En esta Tesis Doctoral se indagará el comportamiento de los fanáticos de un equipo de fútbol, con la finalidad de avanzar en la investigación científica sobre el estudio de las acciones que los individuos manifiestan no sólo en la vida cotidiana y tangible, sino también en el espacio paralelo de internet, mediante el efecto boca-oído electrónico. Para ello se realizó un estudio que tiene como propósito identificar los antecedentes del amor a la marca y comprobar si existe una influencia positiva significativa en el comportamiento de los consumidores en entornos offline y online. Esta tesis plantea tres objetivos: identificar el rol de las asociaciones de marca en el amor de marca, analizar …
Alternative respiratory pathways of Escherichia coli: energetics and transcriptional regulation in response to electron acceptors
1997
AbstractThe electron-transport chains of Escherichia coli are composed of many different dehydrogenases and terminal reductases (or oxidases) which are linked by quinones (ubiquinone, menaquinone and demethylmenaquinone). Quinol:cytochrome c oxido-reductase (`bc1 complex') is not present. For various electron acceptors (O2, nitrate) and donors (formate, H2, NADH, glycerol-3-P) isoenzymes are present. The enzymes show great variability in membrane topology and energy conservation. Energy is conserved by conformational proton pumps, or by arrangement of substrate sites on opposite sides of the membrane resulting in charge separation. Depending on the enzymes and isoenzymes used, the H+/e− rat…