Supporting conceptual knowledge capture through automatic modelling

Abstract Building qualitative models is still a difficult and lengthy endeavour for domain experts. This paper discusses progress towards an automated modelling algorithm that learns Garp3 models based on a full qualitative description of the system's behaviour. In contrast with other approache

Semantic enrichment of models in DynaLearn learning enviroment

In this work we present our contribution to the DynaLearn learning environment. DynaLearn is an interactive modeling tool for education based on the "learning by modeling" approach. DynaLearn allows students to build Qualitative Reasoning (QR) models to formally represent a domain of their interest. This process helps the students to get a better understanding of the domain and to predict the behavior of the modeled system in view of the possible changes

Acquiring Conceptual Knowledge about How Systems Behave

There is a need for software that supports learners in actively dealing with theoretical concepts by having them create models and perform concept prediction and explanation (e.g. [3,4,5]). DynaLearn seeks to address this by developing a domain independent Interactive Learning Environment (ILE) based on Qualitative Reasoning (QR) [1]. The QR vocabulary fits the nature of conceptual knowledge, and the explicit representation of these notions in the software provides the handles to support an automated communicative interaction that actually discusses and provides feedback at the conceptual level

DynaLearn: Architecture and Approach for Investigating Conceptual System Knowledge Acquisition

DynaLearn is an Interactive Learning Environment that facilitates a constructive approach to developing a conceptual understanding of how systems work. The software can be put in different interactive modes facilitating alternative learning experiences, and as such provides a toolkit for educational research

Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures

Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo

Dissemination Level

D4.2.2 User Manual for Collaborative QR model building and simulation workbench 1 Due date of deliverable: 01/09/2006 Actual submission date: 12/09/2006 Start date of project: 1 st March 2005 Duration: 30 months Organisation name of lead contractor for this deliverable