Multi-agent systems (MAS) are now being considered a promising architectural approach for designing collaborative information systems. In such a perspective, the concept of delegation has often been considered as a key concept for modeling cooperative behavior in MAS. However, despite considerable work on delegation mechanisms in MAS, few research efforts have aimed at truly defining a delegati...

this research presents a dynamic mathematical system for modeling and simulating the quality management process in construction projects. through sets of cause and effect feedback loops, all factors that internally and externally affect the quality management process are addressed. the proposed system integrates fuzzy logic with system dynamics simulation scheme to consider the uncertainties as...

In model-driven engineering (MDE), software is developed based on models which hence constitute the central artifacts in the software development process. Consequently, tools supporting MDE, such as model editors, interpreters, and debuggers are crucial in MDE. For developing such tools efficiently, modeling languages have to be defined formally. While for formally defining a modeling language’...

Background and Purpose—Vasospasm is an important complication of subarachnoid hemorrhage, but is variably defined in the literature. Methods—We studied 580 patients with subarachnoid hemorrhage and identified those with: (1) symptomatic vasospasm, defined as clinical deterioration deemed secondary to vasospasm after other causes were eliminated; (2) delayed cerebral ischemia (DCI), defined as s...

We propose a software development approach that combines the use of the structuring concepts provided by problem frames, the use of the UML notation, together with our methodological approach for well-founded methods. Problem frames are used to provide a first idea of the main elements of the problem under study. Then we provide ad hoc UML based development methods for some of the most relevant...

One possible final goal of defining a set of criteria to define modeling approaches [1] is to help people, especially from industry, picking up the good approaches or artifacts according to their own purpose. The authors of the comparison criteria have managed to get several different assessments made by defenders of particular modeling approaches. From our point of view the experiment is matur...

Recently, an overall trend towards increasing complexity of ontologies could be observed, not only in terms of domain modeling, where the complexity should correspond to the information to be modeled, but also as regards the addition of further information, which could be modeled as external resources to the domain model and linked to its relevant elements. This concerns the addition of termino...

Problem frames are patterns for analyzing, structuring, and characterizing software development problems. This paper presents a formal metamodel for problem frames expressed in UML class diagrams and using the formal specification notation OCL. That metamodel clarifies the nature of the different syntactical elements of problem frames, as well as the relations between them. It provides a framew...