Conceptual modelling in software engineering is dominated by the implicit semantics of UML, some other OMG products, and a bunch of related modelling tools. Although other alternatives to modelling are seen in academic circles, industry is dominated by this single approach. With no room to improve and no freedom to experiment, stagnation is guaranteed. The paper claims that a technology-free, p...

From the set of all pairwise homologies, weighted by sequence similarities, among a set of genomes, we seek disjoint orthology sets of genes, in which each element is orthogonal to all other genes (on a different genome) in the same set. In a graph-theoretical formulation, where genes are vertices and weighted edges represent homologies, we suggest three criteria, with three different biologica...

Developing multimedia applications, such as video and audio applications, is a diicult task because of the stringent requirement on system resources and the great diversity of multimedia standards and devices. Many existing multimedia systems are monolithic and extremely complex. It is hard to extend and reconngure those systems. Easy exten-sibility and reconngurability is desirable since multi...

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INTRODUCTION Delayed gastric emptying occurs frequently in critically ill patients and has the potential to adversely affect both the rate, and extent, of nutrient absorption. However, there is limited information about nutrient absorption in the critically ill, and the relationship between gastric emptying (GE) and absorption has hitherto not been evaluated. The aim of this study was to quanti...

In this column, we’ll start presenting issues surrounding CORBA Object Adapters (OAs). We’ll focus on what Object Adapters are and describe their roles within a CORBAbased system. In addition, we’ll begin an in-depth discussion of the new Portable Object Adapter (POA) specification that was recently adopted by the OMG. Our subsequent columns will continue this discussion and show some examples ...

In this column, we’ll start presenting issues surrounding CORBA Object Adapters (OAs). We’ll focus on what Object Adapters are and describe their roles within a CORBAbased system. In addition, we’ll begin an in-depth discussion of the new Portable Object Adapter (POA) specification that was recently adopted by the OMG. Our subsequent columns will continue this discussion and show some examples ...

Model-driven Architecture (MDA) is a software architecture framework proposed by the Object Management Group OMG. MDA emphasises the importance of modelling in the architectural design of software systems. Ontologies are can enhance the modelling aspects here. We present a layered MDA-based modelling approach. We focus on servicebased software and the Web Services platform.