The object-oriented design process is investigated within the classic software development classii-cation of Analysis, Design, and Implementation. When all development is performed using object oriented methods, OOD is best characterized as a transformational process, mapping declarative descriptions of objects and classes to implementation plans. Subphases of class design, system design, and p...

Requirements engineering and architectural design are key activities for successful development of software systems. Specifically in the service-oriented development systems there is a gap between the requirements description and architecture design and assessment. This article presents a systematic process for systematically deriving service-oriented architecture from goal-oriented models. Thi...

Commercial object-oriented design methods are often complicated and hard to learn and use. This paper presents a software design method that is a pragmatic and simple approach to designing object-oriented applications. It is based on the fundamental principles of object-oriented design: objects and their cooperation. Design process descriptions are described, considering modeling notations, as ...

methyl tertiary butyl ether (mtbe) is known as a promising substitute for tetra ethyl lead (tel) in order to increase the octane number of gasoline. mtbe process, as many other processes, has two distinguished section, namely reaction section and separation section. in this paper we focus only on synthesis and optimization of separation section of this process. in order to achieve this objectiv...