Designs evolve from a preliminary concept by a process of iterative evaluation and refinement. Every cycle of this process necessarily consists of assessing the extent to which functional specifications have been satisfied. It is hypothesized that providing a tool for automatically modeling and analyzing devices and relating individual component characteristics to device behavior would aid the ...

Many learning tasks, including computer supported modeling, require students to learn and use some kind of structured representational system. In order to use any such system, students must make a match between the perceived world and the representational elements given. There is interplay between student conceptions and the representational ontology, with the ontology guiding student conceptua...

Multi-level modeling tools provide inherent support for modeling domain scenarios with multiple classification levels. However, as the success of domain-specific modeling tools illustrates users increasingly expect to be able to visualize models using domain-specific languages. It is relatively straightforward to support this using traditional “two-level” modeling technologies, but many of the ...

background: in this study, the chemical quality of water in some sub-basins of gamasiab river has been investigated for a long term planning of water consuming in the region . methods: the area is about 11 x10 3 km 2 , located in ramadan and kermanshah, the two western regions of iran. in this regard the results of the water samples, which were collected on the outlet of the 13 hydrometrical st...

A novel higher order large-domain hierarchical finite-element technique using curl-conforming vector basis functions constructed from standard Legendre polynomials on generalized curvilinear hexahedral elements is proposed for electromagnetic modeling. The technique combines the inherent modeling flexibility of hierarchical elements with excellent orthogonality and conditioning properties of Le...

The software architecture is the structure or the set of structures of the system, which comprise software elements, externally visible properties of those elements and the relationship amongst them. Very important role in developing of software architecture has its modeling. Based on the model, the properties of modeled system can be analyzed, to obtain required behavior. The essence of our id...

The paper presents a new way of accounting for the meaning of verbs in natural languages, using a diagrammatic notation based on the Unified Modeling Language (UML). We will introduce the new framework by outlining some modeling elements and indicating major differences to the UML. An extended example will be discussed in more detail. We will then focus on the cognitive background of the framew...

This paper suggests an approach of delivering a new generation of modeling tools with improved user interface without giving up the mathematical engines of currently available tools. The approach is presented through the description of an integrated environment for modeling computer systems and communication networks named IDEAS, which is currently under development at Duke University. The key ...

We present a walk-through tutorial on the modeling of a complex robotic system, like the newly developed desktop mobile manipulator youBot developed by KUKA[5, 4]. The tutorial shows the design of models for typical robotic elements, done in a reusable object-oriented style. We employ an energy-based approach for modeling and its bondgraph notation to ensure encapsulation of functionality, exte...

Objective of Research: : This research program has four major modeling elements: climate change and variability, electrical energy demand and production, regional air pollution, and human health effects associated with air pollution exposure. Our overall objective is to develop a scientifically credible modeling facility that will help policy makers and analysts understand the effects of human ...