Improved Continuous Models for Discrete Media

Improved Continuous Models for Discrete Media

Continuous Media in Discrete Objects: Support for Collaborative Multimedia Continuous Media in Discrete Objects: Support for Collaborative Multimedia

Multimedia has the same potential to revolutionize human-computer interfaces that bitmapped workstations have realized over the last decade. Achieving this potential requires the development of programming environments with integrated support for multimedia. SuiteSound is one such environment. SuiteSound is built in the Suite object-based system on a conventional UNIX operating system. SuiteSou...

Surrogate Models for Mixed Discrete-Continuous Variables

Large-scale computational models have become common tools for analyzing complex manmade systems. However, when coupled with optimization or uncertainty quantification methods in order to conduct extensive model exploration and analysis, the computational expense quickly becomes intractable. Furthermore, these models may have both continuous and discrete parameters. One common approach to mitiga...

DISCRETE SIZE AND DISCRETE-CONTINUOUS CONFIGURATION OPTIMIZATION METHODS FOR TRUSS STRUCTURES USING THE HARMONY SEARCH ALGORITHM

Many methods have been developed for structural size and configuration optimization in which cross-sectional areas are usually assumed to be continuous. In most practical structural engineering design problems, however, the design variables are discrete. This paper proposes two efficient structural optimization methods based on the harmony search (HS) heuristic algorithm that treat both discret...

Combining Discrete and Continuous Process Models

Two notions of process have been used in programs that reason about change* discrete models, which represent changes as instantaneous, and continuous models, which represent changes as processes that act gradually over time. We describe a technique called aggregation which unifies the two types of models and allows both to be used when performing qualitative simulation. Aggregation is a techniq...