This paper introduces parity versions of familiar graph theoretic results, in particular results related to 2-connectedness. The even and odd circuit connected graphs are characterized. The realizable, even-realizable, alternating-realizable, dual realizable and dual even-realizable graphs are classified.

This paper addresses the problem of version management for cooperative systems. We first describe a basic version model – a domain model capturing the idea of a version and the relationships between versions, whether electronic or physical, implicitly or explicitly stored. This is a ‘modal’ model in that it takes into account the context of use of these versions. The model is then extended to m...

This paper is concerned with the problem of version management for cooperative systems. We present a model of versions which is a ‘modal’ model in that it takes into account the context of use of these versions. We describe the basic version model, the modelling of relationships and the modelling of version management.

Geographic information systems gis have become important tools in public planning activities (e.g, in environmental or utility management). This type of activity requires the creation and management of alternative scenarios, as well as analysis of temporal data evolution. Existing systems provide limited support for these operations, and appropriate tools are yet to be developed. This paper pre...

Layers is a nascent text editing concept that combines text versioning into the editing process. Its versioning model is always-merged, conflict-free, and fully visible and manipulable within the editing interface. This report describes the underlying model and some of its properties, the implementation, the user interface, and applications to software engineering.

All of the semantic minimalists come together in seeking to reduce contextual inputs in semantics to a minimum, but they disagree over what this quantity may be, and more specifically, the extent to which something can still be classed as “minimal”. With this issue increasingly addressed, three versions of semantic minimalism can be identified: weak, strong, and radical. They are still gathered...

Individual organisations as well as industry consortia are currently defining application and domain-specific languages using the eXtended Markup Language (XML) standard of the World Wide Web Consortium (W3C). This trend introduces new challenges for version and configuration management. We show that configuration management for XML languages is considerably more complicated for an XML Schema o...

The concept of strangeness emerged from the low energy phenomenology before the entry of quarks in particle physics. The connection between strangeness and isospin is rather accidental and loose and we recognize later that the definition of strangeness is model-dependent. Indeed, in Gell-Mann's triplet quark model we realize that there is a simple alternative representation of strangeness. When...

In the setting known as DLOGTIME-uniformity, the fundamental complexity classes AC ⊂ ACC ⊆ TC ⊆ NC have several robust characterizations. In this paper we refine uniformity further and examine the impact of these refinements on NC and its subclasses. When applied to the logarithmic circuit depth characterization of NC, some refinements leave NC unchanged while others collapse NC to NC. Thus we ...

A general spectrum synthesis CCP7 program SYNSPEC was modiied for the purposes to analyse the atmospheres of CP stars as well as very late type stars. Modiications result into two versions of the code: for PC's and computers basically with UNIX-based operating systems.