purpose: the qualitative evaluation of iranian children and young adults' websites. methodology/approach: it is a survey study using a checklist based on iso 9126-1 and web-qem model. data gathered from 33 websites. results: iranian children and young adults' websites are not in a desirable status considering usability (average=0.39) and functionality (average=0.44). also, they are st...

Formal models of indoor space for reasoning about navigation tasks should capture key static and dynamic properties and relationships between agents and indoor spaces. This paper presents a method for formally representing indoor environments, key indoor events that occur in them, and their effects on the topological properties and relationships between indoor spaces and mobile entities. Based ...

In this paper we describe a framework for model-based diagnosis of dynamic systems, which extends previous work in this eld by using and expressing temporal uncertainty in the form of qualitative interval relations a la Allen. Based on a logical framework extended by qualitative and quantitative temporal constraints we show how to describe behavioral models (both consistency-and abductive-based...

This paper discusses a qualitative simulator QRiOM that uses Qualitative Reasoning (QR) technique, and a process-based ontology to model, simulate and explain the behaviour of selected organic reactions. Learning organic reactions requires the application of domain knowledge at intuitive level, which is difficult to be programmed using traditional approach. The main objective of QRiOM is to hel...

Modeling is quite critical and remains a bottleneck for modelbased diagnosis in many application domains. Quantitative models that are developed during the design stage are not applicable as so to model-based diagnosis engines. This paper proposes to take advantage of discretization algorithms used by the machine learning community to discretize the domain value of continuous variables and gene...

In this paper we describe a. framework for model-based diagnosis of dynamic systems, which extends previous work in this field by using and expressing temporal uncertainty in the form of qualitative interval relations a la Allen. Based on a logical framework ex­ tended by qualitative and quantitative tem­ poral constraints we show how to describe behavioral models (both consistencyand abductive...

A qualitative model of the spatio-temporal behaviour of distributed parameter systems based on physical fields is presented . Field-based models differ from the object-based models normally used in qualitative physics by treating parameters as continuous entities instead of as attributes of discrete objects . This is especially suitable for natural physical systems, e.g . in ecology . The model...