the advantages and special characteristics of service oriented architecture and expansion of employing such architecture have brought security topics which are different in some cases from the security principles of traditional information systems. in this article our aim is the examination of various indices of security and the presentation of strategies for security in information systems by ...

Coherent design is a design method for objectoriented software development. It reconciles the requirements of extensibility, comprehensibility, and efficiency for designing reusable libraries. It does so by applying the following principles: separation of behaviour and implementation, compatibility relationships between classes, and conceptual abstraction. This paper explains the objectives and...

The essence of component-based software engineering is embodied in component models. Component models specify the properties of components and mechanism of component compositions. In a rapid growth, a plethora of different component models has been developed, using different technologies, having different aims, and using different principles. This has resulted in a number of models and technolo...

Two important principles that drive the agile MDA processes are immediate execution and test first development. This paper presents a component model, called iComponent, that allows the development of executable models based on agile principles and service orientation. In order to ensure simple and fast definition of component operations, we use a concrete syntax for UML structured activities a...

This paper presents a case-study where a new programming technique is applied to an established branch of software development. The purpose of the study was to test whether or not aspect-oriented programming (AOP) could be used in operating systems development. Instead of any real world operating system an educational OS with the name Nachos was used. This was because Nachos is written in Java ...

There is a consensus that the construction and maintenance of large software systems would greatly benefit from the existence of explicitly stated architectural principles. Such principles should specify the global rules that are to govern the structure and dynamic behavior of a system, providing a framework in which the system can be reasoned about and maintained. However, such a framework is ...

This chapter provides a context and motivation for a language to describe transformations of models within an object-oriented framework. The requirements for such a language are given, and then an object-oriented model of the language’s abstract syntax is provided that meets these requirements. A concrete syntax is introduced along with some example transformations. Finally we discuss the tools...