Skeletonization on quadtree represented images

The most frequent method to represent a digital image is the pixel-pixel type representation. Because of this, most image processing algorithms operate on pixel-pixel type images. Accordingly few years, claim arised to develop image processing algorithms, which operate on some special representation known from the literature. In this paper, we describe the theoretical background, which is required to apply a special image processing procedure - the skeletonization - to the quadtree representation

Nonlinear model-building of a low-power gas turbine

The development of a nonlinear gas turbine model is presented in this paper for loop-shaping control purposes. The nonlinear dynamic equations of the gas turbine are based on the first engineering principles. In order to complete the model, constitutive algebraic equations are also needed. These equations describe the static behavior of the gas turbine at various operating points. The complete, substituted nonlinear model is presented along with its model verification results based on a simulator and measured data

An assessment of convention tourism's potential contribution to environmentally sustainable growth

The tourism literature contains substantial discussions on how increasing numbers of attendees and conventions at a destination contributes to the local economy, but there is limited research on the environmental impact of the concomitant increases in air and other travel, and other activity increases in energy and other resource use. This research assesses the current environmental position of the convention industry in the United States and formulates suggestions for future direction in regard to “green” concepts by examining and comparing the perceptions, attitudes, and behavioral intentions of three groups of convention stakeholders: convention attendees, meeting planners, and convention suppliers. This empirical study recognizes the critical problem of inadequate understanding of the environmental impact of convention activities and the lack of knowledge regarding ecological convention practices. It shows that the perception of environmental impact among the three groups varies depending on which environmentally friendly practices are available to each group. It discusses the background to – and the implications of – the emotional formation of decisions and self-motivation based on positive attitudes and the strong intention to adopt green management practices agreed to by convention stakeholders