16 research outputs found
The effects of an experimental programme to support students’ autonomy on the overt behaviours of physical education teachers
Although the benefits of autonomy supportive behaviours are now well established in the literature, very few studies have attempted to train teachers to offer a greater autonomy support to their students. In fact, none of these studies has been carried out in physical education (PE). The purpose of this study is to test the effects of an autonomy-supportive training on overt behaviours of teaching among PE teachers. The experimental group included two PE teachers who were first educated on the benefits of an autonomy supportive style and then followed an individualised guidance programme during the 8 lessons of a teaching cycle. Their behaviours were observed and rated along 3 categories (i.e., autonomy supportive, neutral and controlling) and were subsequently compared to those of three teachers who formed the control condition. The results showed that teachers in the experimental group used more autonomy supportive and neutral behaviours than those in the control group, but no difference emerged in relation to controlling behaviours. We discuss the implications for schools of our findings
cis-bond-producing hydrogenation of polyunsaturates catalyzed by polymer-complexed Cr(CO)3 catalysts
Efficient Identification of Objects Carrying Elements of High-Order Symmetry By Using Correlated Orbital Angular Momentum (OAM) States
A major contributions of Wigner’s work was the introduction of group theory to study both the dynamics and the classification of states in quantum mechanics. The use of rotational symmetry to study the properties of angular momentum eigenstates is particularly associated with him. Following along a similar path, it is shown here that advances in the study of entangled and correlated two-photon states allow the rapid detection of rotational symmetries in complex macroscopic objects, and that knowledge of this symmetry structure can allow identification, and in some circumstances reconstruction, of the object.
The potential for efficient identification of objects carrying elements of high-order symmetry using correlated orbital angular momentum (OAM) states is demonstrated. The enhanced information capacity of this approach allows the recognition of specific spatial symmetry signatures present in objects with the use of fewer resources than in a conventional pixel-by-pixel imaging, representing the first demonstration of compressive sensing using OAM states. This approach demonstrates the capability to quickly evaluate multiple Fourier coefficients directly linked with the symmetry features of the object. The results suggest further application in small-scale biological contexts where symmetry and small numbers of noninvasive measurements are important
The Effect of Option Choice Framing on Short-Term Regret from Actions/Inactions: Implications for Marketing Strategies
Interaction between two types of information on reactions to delays
This study examines the effects of the interaction of two types of information about delays—information about the duration of a delay (delay duration information) and information about the reason for a delay (delay reason information)—on people’s reactions to delays. In this paper, we argue and demonstrate that the two types of delay information interact to affect attribution for the delay and perceived delay duration. The results obtained from an experimental study indicated that there was a stronger effect of delay reason information on attribution for the delay when delay duration information was absent than when the information was present. When no reason was given for the delay, the subjects attributed greater control to the service provider and perceived the delay to be longer when delay duration information was absent than when the information was present. Copyright Springer Science + Business Media, Inc. 2006Delay, Information, Attribution, Control deprivation,
Electrochemical determination of nitroaromatic explosives at boron-doped diamond/graphene nanowall electrodes: 2,4,6-trinitrotoluene and 2,4,6-trinitroanisole in liquid effluents
Identidad, etnicidad y bienestar social en un contexto socialmente excluyente
El estudio analiza los estereotipos que una muestra de adultos de clase media de Lima (n=130) posee sobre distintos grupos étnicos en el Perú. Asimismo, se analizan las relaciones entre las identificaciones con los grupos étnicos referidos y el bienestar social. Las representaciones estereotípicas muestran la presencia de grupos percibidos como de alto y de bajo estatus, los cuales son diferenciados por sus posibilidades de acceso al poder. El alto estatus es atribuido a los peruanos blancos, quienes son percibidos como exitosos y no patriotas. Con este grupo hay una mayor identificación en la muestra y se observa un mayor nivel de bienestar social asociado a dicha identificación. Los afroperuanos, andinos y amazónicos son percibidos como grupos de bajo estatus, observándose además estereotipos de poca competencia y de alta expresividad asociados a los mismos. La identificación con estos grupos es menor y no se asocia al bienestar social