Search results for "ANSM"
showing 10 items of 3078 documents
Counting the minimum node weight spanning trees for broadcast transmission in wireless sensor networks
2017
Artykuł przedstawia algorytm optymalizacji zużycia energii dla broadcastu w sieciach sensorowych. Transmisja broadcastu pozwala na wysłanie danych do wszystkich portów składających się na sieć. Bezprzewodowe sieci sensorowe zbudowane są z rozproszonych urządzeń pomiarowych. Mają one ograniczone zasoby energii. W tym artykule stworzymy model sieci sensorowej z jednym sensorem broadcastującym. Do tej sieci użyjemy algorytmu znajdującego minimalne spinające drzewo wag, pozwalające na oszczędne wykorzystanie energii sensorów.
Asymmetric effects of monetary policy shocks across US states
2019
This paper provides new empirical evidence of the asymmetric effects of monetary policy shocks across regions. Using a measure of unanticipated changes in the Fed's policy rates over the period 1969Q3–2008Q4 and a local projection method extended to account for spatial effects, we find that monetary policy tightening leads to a long-lasting decrease in states' real personal income, with asymmetric effects across states that are amplified by spatial spillovers. The paper then investigates the role played by several transmission channels finding larger contractionary effects of monetary policy tightening in states with higher manufacturing share, smaller firms, smaller banks and higher house …
Le médicament homéopathique dans l'histoire du médicament, Co construction, confrontation, coopération. Histoire, Transmission, Représentation
2007
The dynamics of this thesis resides in the search for the breach between the historical positioning (in relation to scientific fact itself) of homeopathic medication in the history of medical sciences, and the representation made of it in the past and present. By distinguishing what may be at stake, we are led to identify the positioning and impact of the mode of transmitting scientific fact as lacking a historical link to the history of medical sciences, notably medication. Our research hypothesis thus postulates that the transmission mode is at the source of discrepancies in representation. The links between context breakthroughs, such as the role of influences, are just parameters that, …
La transmissió cultural a l’educació primària a través del currículum de música. Una anàlisi dels llibres de text
2016
El treball d’investigació que ací es presenta mostra una mirada des de les pedagogies crítiques i postcrítiques, entorn de la transmissió cultural que esdevé al currículum de Música d’Educació Primària del País Valencià, sent aquesta reconeguda a partir del buidatge i l’anàlisi dels llibres de text d’aquest àmbit de coneixement. Es tracta d’una investigació de caire qualitatiu, que empra l’anàlisi del contingut i del discurs com a eines metodològiques. La intenció d’aquest estudi és mostrar que a les escoles amb l'us dels llibres de text de Música, es transmete una cultura plena de presències i també absències, i aquestes han de ser reconegudes, pensades i reflexionades pel conjunt de la co…
On the effects of transmit power control on the energy consumption of WiFi network cards
2009
Transmit power control has been largely proposed as a solution to improve the performance of packet radio systems in terms of increased throughput, spatial reuse and battery lifetime for mobile terminals. However, the benefits of transmit power control schemes on these different performance figures may strongly depend on the employed PHY technology and channel access mechanism. In this paper, we focus on the effects of power control on the energy consumption of WiFi network cards. By means of several experimental tests carried out under different operation conditions and modulation schemes, we try to justify why the reduction of the transmission power has a marginal effect on the overall en…
Fomento de la interacción social (conducta prosocial): correlatos neurobiológicos en el Transtorno de Espectro Autista
2015
Recientemente se ha observado un enorme incremento en la prevalencia del Trastorno de Espectro Autista (TEA) cuyos síntomas nucleares están relacionados con el déficit marcado en la comunicación e interacción social. El objetivo del trabajo fue realizar una revisión de la literatura sobre los factores neurobiológicos implicados en el fomento de la conducta social (conducta prosocial) en el TEA, en la última década. Las hormonas y neurotransmisores más relevantes serían la oxitocina, la vasopresina, la serotonina, andrógenos y estrógenos. En cuanto a neuroanatomía y sistema neuronales destacan la ínsula anterior, la amígdala, la zona fronto-parietal, el giro fusiforme y el sistema de neurona…
Prevalencia de la enfermedad de Chagas en donantes y en mujeres embarazadas procedentes de Latinoamérica: estudio epidemiológico
2021
El objetivo de la tesis fue conocer la prevalencia de la enfe5rmedad de Chagas en población de riesgo de ambos sexos procedentes de Latinoamérica y la incidencia de la transmisión vertical (Chagas congénito en los bebés nacidos de mujeres diagnosticadas durante el periodo de estudio. Se diseñó un estudio epidemiológico transversal, descriptivo, con dos cohortes poblacionales (donantes de sangre y mujeres embarazadas) y dos fases temporales, una prospectiva (2006-2010) y otra retrospectiva (2011-2015. Los datos demográficos básicos y los resultados sobre el diagnóstico de la enfermedad de Chagas fueron facilitados por los laboratorios de los centros participantes en el estudio (Centro de tra…
Experimental Evolution Reveals a Genetic Basis for Membrane-Associated Virus Release
2021
Many animal viruses replicate and are released from cells in close association to membranes. However, whether this is a passive process or is controlled by the virus remains poorly understood. Importantly, the genetic basis and evolvability of membrane-associated viral shedding have not been investigated. To address this, we performed a directed evolution experiment using coxsackievirus B3, a model enterovirus, in which we repeatedly selected the free-virion or the fast-sedimenting membrane-associated viral subpopulations. The virus responded to this selection regime by reproducibly fixing a series of mutations that altered the extent of membrane-associated viral shedding, as revealed by fu…
Properties of transmembrane helix TM1 of the DcuS sensor kinase of Escherichia coli, the stator for TM2 piston signaling
2021
Abstract The sensor kinase DcuS of Escherichia coli perceives extracellular fumarate by a periplasmic PASP sensor domain. Transmembrane (TM) helix TM2, present as TM2-TM2′ homo-dimer, transmits fumarate activation in a piston-slide across the membrane. The second TM helix of DcuS, TM1, is known to lack piston movement. Structural and functional properties of TM1 were analyzed. Oxidative Cys-crosslinking (CL) revealed homo-dimerization of TM1 over the complete membrane, but only the central part showed α-helical +3/+4 spacing of the CL maxima. The GALLEX bacterial two-hybrid system indicates TM1/TM1′ interaction, and the presence of a TM1-TM1′ homo-dimer is suggested. The peripheral TM1 regi…
Le transport narratif au coeur de l'expérience d'un dispositif transmédia
2017
The aim of this paper is to describe how consumers experience transmedia devices. Thanks to transmedia major components (narrative universe; platforms and rabbit holes; interactivity; and temporality), once it adheres to it, the user of a transmedia devices lives an experience characterized by participation, immersion and commitment, and, at the end, it leads him to be attached to the object of narration. These results guide to propose a model which emphasizes the central place of narrative transportation in the context of fictional universes presented via transmedia strategy.