A simulation model, ORWARE (ORganic WAste REsearch) is described. The model is used for environmental systems analysis of waste management. It is a computer-based model for calculation of substance flows, environmental impacts, and costs of waste management. The model covers, despite the name, both organic and inorganic fractions in municipal waste. The model consists of a number of separate su...

Humans are remarkably flexible tool users. We not only recognize a wide range of existing tools, but also produce new tools by seeing objects in new ways, or by making or repurposing objects to solve a problem confronting us. Here we study the cognitive processes supporting flexible tool use, including deciding what makes a good tool, and how it should be used. Participants played a video game ...

A frequency-domain numerical model of brass instrument sound production is proposed as a tool to predict their brassiness, defined as the rate of spectral enrichment with increasing dynamic level. It is based on generalized Burger's equations dedicated to weakly nonlinear wave propagation in nonuniform ducts, and is an extension of previous work by Menguy and Gilbert [Acta Acustica 86, 798-810 ...

The paper describes the use of the particular transformations between Petri nets, called reductions, in the analysis process for Petri nets. Reduction methods reduce the graph of the net by agglomeration of place nodes and transition nodes. The reductions transform one net into another, preserving some dynamical properties of Petri nets such as liveness, boundedness or invariants. Then the stan...

A new tool for complex dynamic system simulation is presented. The system complexity is related to the diversity in the submodel types rather than to the number of components and the model size. The presented software supports model coupling as defined in the DEVS (Discrete Event Specification) formalism. Though the DEVS formalism is used, the model components can be of any type, supporting dis...

This paper presents EarthMover, a discrete-event special-purpose simulation modeling tool for earthwork planning geared towards practitioners. The paper explores the capabilities of the system by modeling an earth moving operation of moderate complexity. The operation is initially modeled with default parameters and is sucessively improved based on insights obtained from the static and dynamic ...

This paper presents the simulation tool TETRIS, which provides a complete simulation environment for both protocol stacks, Voice + Data and Packet Data Optimised, of the TransEuropean Trunked RAdio (TETRA) system.

This paper presents a Web-based graphical tool that makes it possible to view and simulate a working circuit at the layout level. This tool allows one to observe changes in logical levels with a dynamic alteration of the color properties of the graphical elements that characterize the circuit at layout level. The layout view changes colors in function of logic level changes. Two aspects of the ...

This paper presents an interactive and user-friendly computer package, ‘‘8085SimuKit,’’ which can be used to simulate the operation of an 8085 microprocessor. The package is a practical tool in teaching microprocessor or related courses. The simulator enables the user to verify his/her program in assembly language or directly in machine language. Two built-in editors, one for assembly language ...

Effective collaboration in simulation modelling is possibly one of the key factors in the success of a simulation project. Computer Supported Cooperative Work is a research field that has investigated this in other domains. This field has led to the technological development of software, or groupware, to facilitate group working. This paper investigates the appropriateness of groupware in simul...