Visual Interactive Simulation (VIS) has dominated discrete-event simulation in the United
Kingdom throughout the eighties. Con ceived and initially implemented by Hurrion (1976) …

Contemporary information networks are developing to meet social demands, and as a result
new technologies and systems are being introduced. The fundamental problem in this …

A method for programming a computer to execute a procedure is based on a graphical
interface which utilizes data flow diagrams to represent the procedure. The method stores a …

Validation is the process of determining if a model adequately represents the system under
study for the model's intended purpose. Validation is a critical component in building the …

A graphical system for executing a process or for pro gramming a computer to execute the
process is based on graphical programming techniques. Techniques include composing a …

The paper presents the rationale for a functional simulation tool, called DEPEND, which
provides an integrated design and fault injection environment for system level dependability …

This paper considers a single server queue that operates in a random environment defined
by an alternating renewal process with states 1 and 2. When the random environment is in …

A new method is presented for visualizing data as they are generated from real-time
applications. These techniques allow viewers to perform simple data analysis tasks such as …

The classical Erlang blocking model has been generalized by many workers to permit
multiple customer types, each with is own resource and mean residency requirements, and …

An object-oriented system for building graphical interfaces to programs is discussed. The
system, called GROW, facilitates the process of creating interfaces that are highly interactive …