Artificial Intelligence (AI) incorporates the decision-making engine that is responsible for automating vehicle driving without human intervention. However, reliable and accurate decisions can only be concluded when a history of events has been accumulated by AI an extended set operations over prolonged periods. The are associated with status transitions while traveling between different geoloc...

Using a simple model we investigate how the flow field in a contact binary can alter its topology under the influence of Coriolis forces. In the case studied, closed streamlines form over a relatively large area. This result causes us to review critically the argument that all surface streamlines can meet in a stagnation point, leading to a constant Jacobi energy over the whole surface. A gener...

The homogenization of a passive ‘tracer ’ in a flow with closed mean streamlines occurs in two stages: first, a rapid phase dominated by shear-augmented diffusion over a time z @ ( L / U ) , where the €’Met number P = LU/K (L, U and K are lengthscale, velocity scale and diffusivity), in which initial values of the tracer are replaced by their (generalized) average about a streamline ; second, a...

The interaction between flows and orography is a fundamental aspect of theoretical fluid dynamics for its direct applications (e.g., in dynamical meteorology); a comprehensive description is nowadays still lacking in some aspects. In this work, in particular, the authors would like to face the problem of flow-blocking and of the streamlines pattern formation, examining the role of stratificatio...

We consider a passive scalar that is advected by a prescribed mean zero divergence-free velocity eld, diiuses, and reacts according to a KPP-type nonlinear reaction. We introduce a quantity, the bulk burning rate, that makes both mathematical and physical sense in general situations and extends the often ill-deened notion of front speed. We establish rigorous lower bounds for the bulk burning r...

In this paper trapped modes are shown to exist for a pair of bodies which are submerged in deep water. An inverse procedure is used whereby a flow which represents a local oscillation is constructed and closed streamlines which surround the singularities of the flow are interpreted as body boundaries. The velocity potential for the flow is constructed from a symmetric combination of horizontal ...

Tortuosity (T) is a parameter describing an average elongation of fluid streamlines in a porous medium as compared to free flow. In this paper several methods of calculating this quantity from lengths of individual streamlines are compared and their weak and strong features are discussed. An alternative method is proposed, which enables one to calculate T directly from the fluid velocity field,...

Introduction Diffusion tractography has become an important method for assessing white matter (WM) structure. Depending on the application, the large number of streamlines typically produced by the tracking algorithm may make the dataset difficult to handle. As there will be many streamlines corresponding to each anatomical WM tract, it is often advantageous to group them into clusters in which...

Hatching lines are often used in line illustrations to convey tone and texture of a surface. In this paper we present methods to generate hatching lines from polygonal meshes and render them in high quality either at interactive rates for on-screen display or for reproduction in print. Our approach is based on local curvature information that is integrated to form streamlines on the surface of ...