This paper presents a 5-axis side milling scheme for freeform surfaces based on automatic piecewise ruled surface approximation. With this scheme, resulting surface nish is accurate and pleasing, and has a smaller scallop height compared to ball-end milling. The ruled surface approximation can be made arbitrarily precise resulting in an overall fast milling operation that satis es tight toleran...

We describe a detailed depth-and time-dependent model of the molecular cloud associated with the ultracompact H ii region G34.3+0.15. Previous work on observations of NH 3 and CS indicates that the molecular cloud has three distinct physical components:-an ul-tracompact hot core, a compact hot core and an extended halo. We have used the physical parameters derived from these observations as inp...

This paper explains how goal-oriented requirements engineering can be transposed into regulation modelling. It motivates also why this way of modelling regulations is worthwhile for people responsible for preparing regulations. In addition, the paper recounts how the approach has been applied to model ICAO Security Regulation for Civil Aviation in the context of the

This paper deals with the occupational absorption of female immigrants from the former Soviet Union (now the CIS) into Israel’s labor market, and their participation in subsidized vocational training courses. About 43 percent of these immigrants had participated in such a course during their first five years in Israel. A calibration of a dynamic choice model in which immigrants’ decision regard...

We propose a principled approach to video summarization using optimal reconstruction as a metric to guide the creation of the summary output. The spatio-temporal video patches included in the summary are viewed as observations about the local motion of the original input video and are chosen to minimize the reconstruction error of the missing observations under a set of learned predictive model...

Although dogs are used by subsistence hunters in many locations throughout the world, hunters with dogs have not been studied from an optimal foraging perspective. A study of indigenous Mayangna and Miskito hunters in Nicaragua indicates that the use of dogs affects both the encounter rates and the pursuit times of several prey types. Before hunters can identify the prey type and initiate a pur...

Four studies out of a series of 6 previous studies have found that predictive models are more accurate at predicting actual match outcomes when the modelling assumptions are violated than when data are transformed to satisfy the assumptions. The current investigation produced two sets of two predictive models of the 2011 Rugby World Cup; one set of models used raw independent variables that vio...

........................................................................................................................................... ii Acknowledgments........................................................................................................................... iv Table of

OF THE DISSERTATION Stochastic Modeling of Advection-Diffusion-Reaction Processes in Biological Systems

We introduce and analyze an inter-temporal choice model where customer valuations are uncertain and evolve over time. The model leads directly to the study of call options on capacity that are similar to partially refundable fares. We show that the capacity provider earns significantly higher revenues by selling real options on capacity than low-to-high pricing. We also investigate the social i...