Numerical study of blow-up and stability of line solitons for the Novikov-Veselov equation

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 $|E| \to \infty$, 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

The implicit deposit rate concept : issues and applications

An abstract for this article is not availableBanks and banking

The Politics of Environmental Activism: a Case Study of the Cruise Industry and the Environmental Movement

Based on a case study of environmental organizations\' confrontation of the cruise industry over environmental practices, this article critically assesses several campaigns and actions by the environmental movement as represented by several key organizations that focus specifically on the cruise industry, and at the social and political processes used by the cruise industry to deal with these organizations. Five environmental groups are included in the case study; the cruise industry is represented by the three major cruise corporations (comprising more than 90% of the North American and European market), their marketing agents and lobbyists. Strategies used by environmental organizations and by the cruise industry are identified and analysis seeks to explain factors associated with the effectiveness or non-effectiveness of these strategies.Community Action, Environment, Social Movements, Political Sociology, Social Change, Social Capital, Cruise Industry, Cruise Ship, Social Activism