Object orientation in modeling, i.e. the possibility to structure a model according to the objects present in the system under consideration, promotes reuse and simplifies maintenance. This paper is mainly devoted to composite language constructs, like matrix notation, multiple inheritance and generic class parameters, that are introduced in order to further facilitate reuse and maintenance of ...

The MC (Maintenance Consultant) system helps users to maintain large software systems by providing access to a set of graphical models representing different aspects of the target software system. Users can combine natural language requests with pointing and MC responds either graphically, textually (tables and natural language), or in combination. Users can also ask about how to use various ma...

Maintenance of proprietary languages and corresponding tooling is expensive. Postponing maintenance to reduce these costs is an often applied, short-term solution which eventually may lead to an unoperational toolset. This paper describes a case study carried out in cooperation with Lucent Technologies where maintenance cost is decreased by simplifying the development process of languages and t...

Abstract Maintenance policy selection for vessel equipment is a multiple criteria decision making. To ensure security, reliability and efficiency of vessel equipment, a maintenance decision model based on risk, availability and cost was proposed according to the characteristics of vessel equipment maintenance. For modeling, analytic network process (ANP) has been employed. And the maintenance p...

With a focus on an under-studied group of immigrants in the UK, this paper examines Iranian families’ language ideologies and practices at home relation to Persian acquisition maintenance fo...

Software development methods and techniques have evolved greatly over the past few decades in terms of new programming paradigms, languages and support tools. This evolution enables the specification, design, implementation, and testing of large complex software systems. However, the existence of such large systems introduces the need for continuous software maintenance. This is an issue of par...

Verbal working memory (VWM), the ability to maintain and manipulate representations of speech sounds over short periods, is held by some influential models to be independent from the systems responsible for language production and comprehension [e.g., Baddeley, A. D. Working memory, thought, and action. New York, NY: Oxford University Press, 2007]. We explore the alternative hypothesis that mai...

We present DO-Casl, a new member of the CASL family of specification languages. It is an extension of Casl-Ltl and it supports a methodology for conveniently writing loose specifications of observers on dynamic sorts. The need for such constructs arose during the development of a CASL library for distributed systems. Indeed, we have frequently used the same pattern of specification, in order to...

A discontinuity exists between modeling and objectoriented programming languages. This discontinuity is a consequence of ambiguous notions in modeling languages and lack of corresponding notions in objectoriented programming languages. It hinders the transition between software implementation and design and hampers software maintenance. This discontinuity is particularly acute for binary class ...