Three-dimensional computer-aided modeling of dynamic processes supported by virtual reality techniques such as 3D-stereo viewing and nD manipulation devices does not reach the usability (ease, concreteness, intuitiveness, directness) that we experience in modeling with real physical objects. Pure virtual prototyping may reduce cognition and communication. To solve this problem we introduce the ...

The overall intent of this research is to develop numerical models of erosion of levees, dams and embankments, validated by physical models. The physical models are performed at 1-g and at high g’s using a geotechnical centrifuge. The erosion is modeled in detail, from beginning to end, that is from the time the levee is overtopped until the levee is breached. Typical quantities measured as a f...

Computer-based system design inextricably combines system and software development. An embedded software component, whose logical behavior is defined in some computer language, is “instantiated into” a physical behavior on a computing platform. The instantiation of logical behavior into physical behavior is complicated by the following factors: 1. Physical behavior is directly influenced by the...

This paper studies rill and gully initiation and propagation on levees, dams, and general earth embankments. It specifically studies where these erosion features occur, and how long a particular embankment can sustain overtopping before breaching and catastrophic failure. This contrasts to previous levee erosion analysis, which has primarily concerned the final effects of erosion, such as soil ...

High activation energy, chemically amplified resist systems exhibit a 4% to 15% volume shrinkage during the post-exposure bake process. Current lithography process simulators do not take this volume shrinkage into account, thus violating the continuity equations used to model the process. This work aims at describing the kinetics of the post-exposure bake process by tracking the volume shrinkag...

The singing voice is one of the most versatile musical instruments. In spite of the fact that singing can be learned by almost everybody, the physics of the singing voice are quite complex. This work presents a time-domain model for synthesis of sung vowels. The symmetric vocal fold model is based upon Titze’s 16-mass model [1] but takes into account jet generation and vortex shedding. Two voca...

musical timbre and physical modeling Giovanni De Poli and Davide Rocchesso

The history of the computing sciences shows a shift in attention from the syntactic properties of computation to the semantics of computing in the real world. A large part of this shift has been brought about by the introduction of conceptual modeling languages. In this paper I review this history from the early 1970s and identify the elements of real-world semantics that these notations have b...

An increasing number of publications include modeling. Often, such studies help us to gain a deeper insight into the phenomena studied and break down barriers between experimental and theoretical communities. However, combining experimental and theoretical work is challenging for authors, reviewers, and readers. To help maximize the usefulness and impact of combined theoretical and experimental...