Collaborative mobile applications support users on the move in order to perform a collaborative task. One of the challenges when designing such applications is to consider the context where they will execute. Contextualized applications are easy to adopt by the users; unfortunately the design of contextualized tools is not evident. This paper presents a framework of contextual elements to be co...

Contextualization of Geospatial Database Semantics Written by Administrator Thursday, 19 May 2011 07:40 Last Updated Friday, 04 October 2013 17:19 Human interactions with geographical information are contextualized by problem-solving activities which endow meaning to geospatial data and processing. However, existing spatial data models have not taken this aspect of semantics into account. This ...

Cosmological N-body simulations on parallel computers produce large datasets | gigabytes at each instant of simulated cosmological time, and hundreds of gigabytes over the course of a simulation. These large datasets require further analysis before they can be compared to astronomical observations. The \Halo World" tools include two methods for performing halo nding: identifying all of the grav...

Interaction between agents representing real world actors in computational models must be informed by knowledge about interaction processes occurring amongst real world actors. We propose the use of endorsements to implement the cognitive processes underlying the decisions that lead to interactions among agents. The main advantage in applying the idea of endorsements lies in the fact that they ...

Within a virtual organization, more than one institution might be involved in the regulation of actors’ behavior. Each institution specifies a set of norms covering a specific aspect of the problem domain with a governance scope defining its remit. Together, they govern the participants and reflect the objectives of the organization. With actors’ behavior being simultaneously regulated by more ...

Contextualization of Geospatial Database Semantics Written by Administrator Thursday, 19 May 2011 07:40 Last Updated Friday, 04 October 2013 17:19 Human interactions with geographical information are contextualized by problem-solving activities which endow meaning to geospatial data and processing. However, existing spatial data models have not taken this aspect of semantics into account. This ...

Human interactions with geographical information are contextualized by problem-solving activities which endow meaning to geospatial data and processing. However, existing spatial data models have not taken this aspect of semantics into account. This paper extends spatial data semantics to include not only the contents and schemas, but also the contexts of their use. I specify such a semantic mo...