Object-oriented analysis and design methodologies are considered as the most popular software development methods for the 1990s. A common drawback, however, is that they have been developed informally. There is no theoretical framework enabling us to define precisely the object-oriented concepts involved, to solve concurrency problems, and to verify the correctness of the implementation. We pro...

A major obstacle to sharing computable clinical knowledge is the lack of a common language for specifying expressions and criteria. Such a language could be used to specify decision criteria, formulae, and constraints on data and action. Al-though the Arden Syntax addresses this problem for clinical rules, its generalization to HL7's object-oriented data model is limited. The GELLO Expression l...

FACE is an object–oriented, self-descripting data model with first-class types. FACE can be used to model software, e.g. object–oriented frameworks. We explore techniques and mechanisms to implement the reflective FACE data model in the statically typed, object–oriented language C++. Some comparison of FACE with other meta level approaches like MetaObject Protocols or Open Implementations is do...

This paper develops a mathematical characterisation of object-oriented concepts by defining an observation-oriented semantics for an object-oriented language (OOL) with a rich variety of features including subtypes, visibility, inheritance, dynamic binding and polymorphism. The language is expressive enough for the specification of object-oriented designs and programs. We also propose a calculu...

Modeling and simulation of processing plants are widely used in industry. Construction of a mathematical model for a plant is a time-consuming and error-prone task. In light of extensive advancements in computer science (both hardware and software), computers are becoming a necessary instrument in industrial activities. Many software tools for modeling, simulation and optimization of proces...

There is always has been a demand to provide efficient and effective high quality software. There are various maintainability objects to provide better maintainability. The quality of good software design heavily effective the quality of software. One of the claimed advantages of object-oriented paradigm is ease of maintenance. This paper provides the review on the papers studied on the softwar...

It is often claimed that strengths of object-oriented approaches include the integration of data and process perspectives, opportunities for reuse, and high comprehensibility. In this paper focus is on object-oriented analysis, and the core models of an object oriented analysis method are examined, formalized, and enhanced to deene a general framework. Jacobson's Objectory method is used as a s...