The fractal kinetics curve derived by Savageau is analysed to show that its parameters are not uniquely determined given four appropriately situated data points. Comparison is made with an alternate fractal Michaelis-Menten equation derived by Lopez-Quintela and Casado.

Preston, Glei, and Wilmoth (2010) recently proposed an innovative regression-based method for estimating smoking-attributable mortality in developed countries based on observed lung cancer death rates. Their estimates for females, however, differ appreciably from some published estimates. This article presents a modified version of the Preston, Glei, and Wilmoth method that includes an age-peri...

In this paper, we introduce an electronic collaborative learning environment based on Interactive Instructors of Recreational Mathematics (IIRM), establishing an alternative approach for motivating students towards mathematics. The IIRM are educational software components, specializing in mathematical concepts, presented through recreational mathematics, conceived as interactive, recreationorie...

1 Stroke is an enormous and serious public health problem. It is the third most common cause of death in the world, after ischaemic heart disease and all types of cancer combined. Stroke caused 4.4 million deaths in 1990, and two thirds of these occurred in less developed countries (Murray and Lopez, 1996, 1997). Stroke is also the most important cause of disability among adults. The estimated ...

Introduction Unprecedented population growth accompanied equally unprecedented land use and land cover changes in Latin America during the second half of the twentieth century, affecting the food security of thousands of agriculturally based communities. The more than doubling of the population of Latin America was accompanied by rural migration to urban areas and extensification, or expansion,...

Program Manager Brad Baranowski and Associate Dean Pilar Lopez of the Occupational & Life Skills program at Bellevue College explained how achieves its goal helping students develop self-awareness, self-advocacy, self-determination.

Julien CEGARRA * Bernat GACIAS Pierre LOPEZ CLLE, Université de Toulouse Centre Universitaire, Place de Verdun 81012 Albi cedex 9, FRANCE [email protected] LAAS-CNRS, Université de Toulouse 7 Avenue du Colonel Roche 31077 Toulouse cedex 4, FRANCE [email protected] [email protected] Abstract This study sought to assess the consequences of technological changes in vehicle routing interfaces fo...

ference (IAAI) is the premier venue for documenting the transition of AI technology into applications. In this and the next issue of AI Magazine, we will present extended versions of papers presented at IAAI-12 (held in Toronto, Ontario, Canada) that were selected for their description of AI technologies that are either in practical use or close to it. We also present an article by Ramon Lopez ...

Social network analysis (SNA) has much to offer sociology. However, there is little consideration of SNA in contemporary sociological theory (CST) although SNA developed in parallel with the consolidation of CST in the 1960s and 1970s. SNA championed its distinctiveness as ‘structural analysis’. Nearly all current CST presents ‘structure versus agency’ as the crucial binary to differentiate mai...