Search results for "Dyad"
showing 10 items of 70 documents
On decoupling in Banach spaces
2021
AbstractWe consider decoupling inequalities for random variables taking values in a Banach space X. We restrict the class of distributions that appear as conditional distributions while decoupling and show that each adapted process can be approximated by a Haar-type expansion in which only the pre-specified conditional distributions appear. Moreover, we show that in our framework a progressive enlargement of the underlying filtration does not affect the decoupling properties (in particular, it does not affect the constants involved). As a special case, we deal with one-sided moment inequalities for decoupled dyadic (i.e., Paley–Walsh) martingales and show that Burkholder–Davis–Gundy-type in…
Joint Alignment and Modeling of Correlated Behavior Streams
2013
The Variable Time-Shift Hidden Markov Model (VTS- HMM) is proposed for learning and modeling pairs of cor- related streams. Unlike previous coupled models for time series, the VTS-HMM accounts for varying time shifts be- tween correlated events in pairs of streams having different properties. The VTS-HMM is learned on a set of pairs of unaligned streams and, thus, learning entails simultaneous estimation of the varying time shifts and of the parameters of the model. The formulation is demonstrated in the analysis of videos of dyadic social interactions between children and adults in the Multimodal Dyadic Behavior Dataset (MMDB). In dyadic social interactions, an agent starts an interaction …
SNOM signal near plasmonic nanostructures: an analogy with fluorescence decays channels
2008
International audience; Scanning Near-field Optical Microscope (SNOM) is based on local excitations of nanostructures deposited on a substrate (illumination mode). Ideally, the local source behaves like a dipolar emitter so that the SNOM signal is strongly similar to the fluorescence decay rates of an excited molecule that would be located at the SNOM tip position. We present here how the SNOM signal near plasmonic nanostructures can be used to analyze radiative and non-radiative contribution to the fluorescence decay rate.
Electrochemistry of Bis(pyridine)cobalt (Nitrophenyl)corroles in Nonaqueous Media
2018
International audience; A series of bis(pyridine)cobalt corroles with one or three nitrophenyl groups on the meso positions of the corrole macrocycle were synthesized and characterized as to their electrochemical and spectroscopic properties in dichloromethane, benzonitrile, and pyridine. The potentials for each electrode reaction were measured by cyclic voltammetry and the electron-transfer mechanisms evaluated by analysis of the electrochemical data combined with UV-visible spectra of the neutral, electroreduced, and electroxidized forms of the corroles. The proposed electronic configurations of the initial compounds and the prevailing redox reactions involving the electroactive central c…
Metal Dependence on the Bidirectionality and Reversibility of the Singlet Energy Transfer in Artificial Special Pair-Containing Dyads
2017
International audience; The demetalation of a precursor dyad, 3, built upon a zinc(II)-containing artificial special pair and free-base antenna, leads to a new dyad, 4, for singlet energy transfer composed of cofacial free-base porphyrins (acceptor), [Fb](2) bridged by a 1,4-C6H4 group to a free-base antenna (donor), [Fb]. This dyad exhibits the general structure [M](2)-C6H4-[Fb], where [M](2) = [Fh](2), and completes a series reported earlier, where [M](2) = [Mg](2) (2) and [Zn](2) (3). The latter dyads exhibit a bidirectional energy-transfer process at 298 K for 2 and at 77 K for 3. Interestingly, a very scarce case of cycling process is observed for the zinc-containing dyad at 298 K. The…
Efficient photoinduced electron transfer in a porphyrin tripod-fullerene supramolecular complex via pi-pi interactions in nonpolar media.
2010
A novel porphyrin tripod (TPZn(3)) was synthesized via "click chemistry". Three porphyrin moieties of TPZn(3) are geometrically close and linked by a flexible linker. The electron-transfer oxidation of TPZn(3) results in intramolecular pi-dimer formation between porphyrin moieties as indicated by electrochemical, vis-NIR, and ESR measurements. The cyclic voltammogram of TPZn(3) exhibited stepwise one-electron oxidation processes of three porphyrin moieties in the range from 0.58 to 0.73 V (vs SCE in CH(2)Cl(2)). When TPZn(3) was oxidized by tris(2,2'-bipyridyl)-ruthenium(III) ([Ru(bpy)(3)](3+)), the oxidized species (TPZn(3))(n+) (0n/= 3) exhibited a charge resonance band in the NIR region …
Effect of tempo and vision on interpersonal coordination of timing in dyadic performance
2015
Interpersonal coordination within a dyadic musical performance requires that the two musicians share a similar mental model of the music’s timing structure. In addition to non-fluctuating inter-onset-interval, matched mental models can be observed through corporeal articulations and apparent embodiment of musical features (i.e. synchronous body sway, mimicked or complementary gestures). Our aim was to examine the effect of tempo on interpersonal coordination within a musical dyad. Violin dyads performed three unfamiliar collaborative musical sequences in facing vs. non-facing conditions. Our hypotheses were that interpersonal coordination would be weakened in the non-facing conditions, and …
Exploring the perception of expressivity and interaction within musical dyads
2016
Bodily gestures in music performance play an important role in the perception and appreciation of music by the audience. Performance variations can be identified by observers even when no auditory cues are available; visual kinematic information has been demonstrated to be crucial in identifying expressive intentions. The current thesis explores violin dyads performing an unfamiliar song. High quality optical motion capture was employed to record full body movement. We applied the standard paradigm to study the perception of expressive performance. Our aim was to predict perceptual ratings of expressivity from movement computations. That is, to deduce secondary aspects of musical gestures, …
ARMONÍA DE PAREJA EN POBLACIÓN DE PERSONAS MAYORES: DIFERENCIAS ENTRE SEXOS
2016
El ajuste diádico no solamente es un factor esencial en la perdurabilidad y calidad de toda relación de pareja, sino que además, puede afectar a la vida personal y a la salud de sus miembros. El presente estudio explora el ajuste percibido por las personas mayores en España en su relación de pareja presente o pasada, analizando las posibles diferencias entre hombres y mujeres. Se administró la Escala de Ajuste Diádico a 80 personas entre los 51 y los 81 años. El 55% eran mujeres. El 66,3% estaban casados, el 21,3% separados o divorciados y un 12,5% había enviudado. Se tomó el valor 107 propuesto en la literatura como punto de corte para establecer un ajuste diádico positivo. La puntuación g…
Emigracja a proces uczenia się małżonków
2022
Wstąpienie Polski do struktur Unii Europejskiej zapoczątkowało emigrację poakcesyjną Polaków, dla której charakterystyczne było pojawienie się nowych kierunków wyjazdów emigracyjnych. Jednym z najbardziej popularnych stała się Wielka Brytania. Wyjazd emigracyjny jest wydarzeniem znaczącym w biografii człowieka i całej jego rodziny. W świetle koncepcji Agnieszki Bron (2000, 2006), wiąże się on z licznymi napięciami, ambiwalencją, poczuciem bezradności i zawieszenia (tzw. floating), a jednocześnie jest wydarzeniem o potencjale edukacyjnym. Celem badań uczyniono wyjaśnienie procesu uczenia się małżonków doświadczających emigracji. Przeprowadzono badania biograficzne z wykorzystaniem autobiogra…