Search results for "face to face"
showing 5 items of 5 documents
Selective Stepwise Suzuki Cross-Coupling Reaction for the Modelling of Photosynthetic Donor−Acceptor Systems
2009
A Suzuki reaction performed as a selective stepwise substitution of two boryl groups on a diarylporphyrin precursor is reported for straightforward construction of a porphyrin trimer, modeling photosynthetic donor-acceptor systems.
Through space singlet-singlet and triplet-triplet energy transfers in cofacial bisporphyrins held by the carbazoyl spacer
2007
The through space singlet-singlet and triplet-triplet energy transfers in cofacial bis(etio-porphyrins) rigidly held by the carbazoyl spacer were investigated. The studies on singlet-singlet transfer, which operates via a Förster mechanism, were performed using the zinc porphyrin and free base chromophores as energy donor and acceptor, respectively, while the investigation on triplet-triplet processes was performed using the palladium porphyrin, and the zinc porphyrin and free base chromophores as donor and acceptors, respectively. The rate for singlet-singlet transfer ( k ET ( singlet )) is unexpectedly slower than that reported for other similar, rigidly held bisporphyrins such as H 2( D…
Interaction between bottlenose dolphins (Tursiops truncatus) and artisanal fisheries in the Valencia region (Spanish Mediterranean Sea)
2018
Abstract Coastal waters of the Valencia region are important habitats for bottlenose dolphins, but also important fishing grounds for artisanal fisheries. No studies have been carried out here to investigate the overlap and interactions between the fishing grounds and dolphin habitat. The present study aims to assess the potential occurrence of interactions between artisanal fisheries and bottlenose dolphins in these waters. Face to face interviews were conducted to investigate for the first time artisanal fishermen's perceptions of their interactions with bottlenose dolphins. A total of 131 fishermen (40.1% of the artisanal fleet for the Valencia region) participated of research. Among the…
Let’s Ask About Sex : Methodological Merits of the Sealed Envelope Technique in Face-to-Face Interviews
2020
When it comes to deviant behavior and other sensitive topics, respondents in surveys tend either to refuse answering such sensitive questions or to tailor their answers in a socially desirable direction. This occurs by underreporting on negatively connoted behaviors or attitudes and by overreporting on positively connoted ones (be it deliberately or undeliberate). Thus, prevalence estimates of deviant traits are biased. Moreover, if the tendency to misreport is related to influencing factors of the deviant behavior or attitude under investigation, the correlations are biased as well.
Structure and performance assessment in traditional face-to-face and blended learning statistics courses
2014
Abstract In recent years the number of higher education institutions offering blended learning courses has increased notably. Blended learning is understood as the combination of traditional face-to-face teaching with online and distance learning. During the 2012- 13 academic year, for the first time, the Information and Documentation degree course at the University of Barcelona included a blended learning format in its course in statistics. The blended learning course combined biweekly face-to-face classes and online work between sessions. This study describes the organization of the blended course in comparison with the traditional face-to- face course and presents preliminary data on stu…