Sharif Digital Repository

Stricter environmental regulations posed on chemical process industries (CPI), and the ever-increasing costs of end-of-pipe treatment, explain why chemical process industries have adopted new 'cleaner production' approaches in new designs and in retrofits. Finding environmentally clean alternatives for retrofitting existing processes has been addressed with various approaches. In this paper, a previous approach by the same authors is extended to include EHS criteria for targeting waste reduction in chemical processes, The method is applied to an existing local production facility as a case study and risk-based pollution prevention (P2) targets, and the appropriate direction and magnitude of... 

We provide a detailed review of existing object-oriented software development methodologies, focusing on their development processes. The review aims at laying bare their core philosophies, processes, and internal activities. This is done by using a process-centered template for summarizing the methodologies, highlighting the activities prescribed in the methodology while describing the modeling languages used (mainly diagrams and tables) as secondary to the activities. The descriptions produced using this template aim not to offer a critique on the methodologies and processes, but instead provide an abstract and structured description in a way that facilitates their elaborate analysis for... 

The need for constructing software development methods that have been tailored to fit specific situations and requirements has given rise to the generation of general method fragments, or process patterns. Process patterns can be seen in some third-generation integrated methodologies (such as OPEN) and in Method Engineering approaches where they are used as process components. They have also been presented as components in generic software development lifecycles where they represent classes of common practices in a specific domain or paradigm; object-oriented process patterns are well-known examples. Agile methodologies, however, are yet to be thoroughly explored in this regard. We provide a...