Search results for "TSE"
showing 10 items of 1193 documents
A NOTE ON THE CATEGORICAL NOTIONS OF NORMAL SUBOBJECT AND OF EQUIVALENCE CLASS
2021
In a non-pointed category E, a subobject which is normal to an equivalence relation is not necessarily an equivalence class. We elaborate this categorical distinction, with a special attention to the Mal'tsev context. Moreover, we introduce the notion of fibrant equipment, and we use it to establish some conditions ensuring the uniqueness of an equivalence relation to which a given subobject is normal, and to give a description of such a relation.
Shock formation in the dispersionless Kadomtsev-Petviashvili equation
2016
The dispersionless Kadomtsev-Petviashvili (dKP) equation $(u_t+uu_x)_x=u_{yy}$ is one of the simplest nonlinear wave equations describing two-dimensional shocks. To solve the dKP equation we use a coordinate transformation inspired by the method of characteristics for the one-dimensional Hopf equation $u_t+uu_x=0$. We show numerically that the solutions to the transformed equation do not develop shocks. This permits us to extend the dKP solution as the graph of a multivalued function beyond the critical time when the gradients blow up. This overturned solution is multivalued in a lip shape region in the $(x,y)$ plane, where the solution of the dKP equation exists in a weak sense only, and a…
Numerical study of the Kadomtsev–Petviashvili equation and dispersive shock waves
2018
A detailed numerical study of the long time behaviour of dispersive shock waves in solutions to the Kadomtsev-Petviashvili (KP) I equation is presented. It is shown that modulated lump solutions emerge from the dispersive shock waves. For the description of dispersive shock waves, Whitham modulation equations for KP are obtained. It is shown that the modulation equations near the soliton line are hyperbolic for the KPII equation while they are elliptic for the KPI equation leading to a focusing effect and the formation of lumps. Such a behaviour is similar to the appearance of breathers for the focusing nonlinear Schrodinger equation in the semiclassical limit.
Konfutse historian lopussa? : konfutselainen retoriikka Singaporen poliittisella areenalla 20. vuosisadan lopulla
2004
The generalized Kadomtsev-Petviashvili equation I
1997
Predicting school students’ physical activity intentions in leisure-time and school recess contexts: Testing an integrated model based on self-determ…
2021
BackgroundIdentifying psychological correlates of children's physical activity intentions may signpost potentially modifiable targets for interventions aimed at promoting physical activity participation. School recess and leisure-time outside of school are appropriate contexts in which such interventions may be delivered. However, few studies have identified correlates of physical activity intentions in these environments. Examining correlates in these contexts may provide formative evidence on which to base interventions to promote physical activity.PurposeThe current study adopted an integrated theoretical model to test relations between motivational constructs from self-determination the…
“Some Women Are Born Fighters”: Discursive Constructions of a Fighter’s Identity by Female Finnish Judo Athletes
2017
Martial arts and combat sports have been traditionally associated with masculinity, and a range of contradictory meanings have been attached to women’s engagement and experiences. The present study draws on cultural praxis and feminist poststructuralist frameworks to explore how female martial artists are subjectified to dominant cultural discourses surrounding fighting and competition. Interviews with nine female judoka (judo athletes) were gathered in Finland and analyzed using Foucauldian Discourse Analysis (FDA). The FDA revealed that in female judoka talk, judo was constructed as a sport for all, but also as a male domain and a manly sport with fighting and competition as innate mascul…
Una revolución científica a la que Educación Química quiere contribuir
2014
AbstractSustainability Science aims to integrate the study of social development and natural processes to fa a new paradigm thatvour both of them and make possible the transition to Sustainability. This deep scientific revolution cannot be the result of just a new knowledge discipline: it must become a new paradigm that impregnates the ensemble of scientific disciplines and social activities.ResumenLa Ciencia de la Sostenibilidad tiene como objetivo integrar el estudio del desarrollo social y los procesos naturales para favorecer a ambos y posibilitar la transición hacia la sostenibilidad. Esta profunda revolución científica no puede ser el resultado de solo una nueva disciplina del conocim…
Numerical study of blow-up and stability of line solitons for the Novikov-Veselov equation
2017
International audience; We study numerically the evolution of perturbed Korteweg-de Vries solitons and of well localized initial data by the Novikov-Veselov (NV) equation at different levels of the 'energy' parameter E. We show that as |E| -> infinity, NV behaves, as expected, similarly to its formal limit, the Kadomtsev-Petviashvili equation. However at intermediate regimes, i.e. when |E| is not very large, more varied scenarios are possible, in particular, blow-ups are observed. The mechanism of the blow-up is studied.