Search results for "Phenomenon"
showing 10 items of 464 documents
Safety Concerns on Ground Fault Application Transfer Phenomenon in HV Installations
2007
When a fault to ground occurs in HV/MV substations supplied by a combined overhead-cable line, most of the fault current can be transferred and injected into the soil several kilometers far away from the fault location. This phenomenon is called "fault application transfer" and mostly concerns transition stations, where cables are connected to the overhead line. If the transition station is a dead-end steel pole structure, usually accessible to the general public, the local ground electrode could be inadequate to maintain ground potential rise within safety limits. Hence, dangerous touch and step voltages may appear at exposed locations. In the paper results of various computer simulations …
Il tarantismo in Sicilia
2017
Il testo prende in esame il complesso di materiali editi e inediti (fonti storiche e archivistiche, documenti musicali, testimonianze etnografiche) che attestano la presenza del tarantismo in Sicilia dalla metà del Seicento alla fine dell’Ottocento. Il caso siciliano viene quindi inquadrato nell’ambito dell’ampia letteratura che ruota intorno al fenomeno, a partire dal classico studio di Ernesto De Martino fino al dibattito sull’interpretazione del fenomeno fra i poli dell’esorcismo e della possessione, dovuto soprattutto all’etnomusicologo francese Gilber Rouget. L’analisi viene quindi estesa alla tradizione dei guaritori dei morsi di serpenti (i ciaràuli), che con il tarantismo condividon…
«Roumain italiens»: pastoralisme et dynamiques migratoires dans le troisième millénaire
2011
This paper considers the phenomenon of migration, by proposing a case study upon the migration of Romanians in Italy. As a consequence of the access of Romania in the UE in January 2007, Romanians became citizens of UE, but, nevertheless, they are not aware of their rights and juridical statute and continue to live in a state of subordination and humility in their interaction with their employers. They do not rebel, since they are afraid of losing their working place. This is a step backwards as to the process of integration, which, as Buttitta noticed, should not lead to a "standardization of the immigrants to the culture of the host country, but to an acceptance of immigrants, as part of …
Is more choice always worse? Age differences in the overchoice effect
2015
ABSTRACTCurrent research on the overchoice effect has been mainly conducted from an adult point of view and with adult subjects. This study investigates whether children, adolescents, and seniors suffer the same negative consequences as adults when facing an overabundance of choice. Findings showed that the overchoice effect did not equally extend to all age groups. While adolescents were affected by the phenomenon in a very similar way as adults, children and seniors suffered fewer negative consequences of an overabundance of choice. Theoretical and practical implications are discussed.
Polynomial mapped bases: theory and applications
2022
Abstract In this paper, we collect the basic theory and the most important applications of a novel technique that has shown to be suitable for scattered data interpolation, quadrature, bio-imaging reconstruction. The method relies on polynomial mapped bases allowing, for instance, to incorporate data or function discontinuities in a suitable mapping function. The new technique substantially mitigates the Runge’s and Gibbs effects.
Observation of Optical Undular Bores in Multiple Four-Wave Mixing
2014
International audience; We demonstrate that wave-breaking dramatically affects the dynamics of nonlinear frequency conversion processes that operate in the regime of high efficiency (strong multiple four-wave mixing). In particular, by exploiting an all-optical-fiber platform, we show that input modulations propagating in standard telecom fibers in the regime of weak normal dispersion lead to the formation of undular bores (dispersive shock waves) that mimic the typical behavior of dispersive hydrodynamics exhibited, e.g., by gravity waves and tidal bores. Thanks to the nonpulsed nature of the beat signal employed in our experiment, we are able to clearly observe how the periodic nature of …
The reliability and validity of the sport engagement instrument in the Finnish dual career context
2021
Although engagement is key to predicting burnout and dropout, few existing instruments measure this phenomenon in the sports context. As part of a larger three-year Lower Secondary Sports Schools Pilot Project (LSSSPP) in Finland, we conducted two studies as part of the present research with the major aims of (a) constructing the Sport Engagement Instrument (SpEI) and (b) validating the new instrument in the Finnish dual career context. In the preparatory study, an expert panel constructed the SpEI, a questionnaire comprising 37 items intended to measure cognitive and affective sports engagement. The main study utilised questionnaire data collected from two independent samples (n1 = 992 and…
The Conceptual Levels and Theory Languages of Interaction Design
2009
In a way, concepts are like friends. Tell me what your concepts are and I can tell what you are. Modifying freely the way Wittgenstein (1921) expressed this important Kantian (1781) point on the limiting power of concepts on one’s thinking, the concepts that human– technology interaction designers of different scientific backgrounds use differ from each other and, consequently, they are apt to solve the same tasks in different ways. Theoretical concepts constrain the kinds of questions specialists can ask and what kinds of things they are interested in. Thus programmers have a different view of users than do psychologists or sociologists. Just as a lay person can understand little about ven…
A study of minorities as victims
2006
This article presents the idea that during the 1990s an important change took place in relation between minorities and majorities: the emergence of minorities as victims alongside the formerly predominant active, militant minorities. A hypothesis is raised that these two types of minorities differ in their agenda as well as in the nature of the influence they exert. Active minorities trigger an external conflict with majority and induce conversion (latent rather than overt influence); minorities as victims create an internal conflict, a sense of guilt, within the majority, while they exert an exclusively overt influence. We report two experiments confirming our hypothesis. We discuss the no…