In this paper, a new tuning procedure for PI controllers in Two-Degree-of-Freedom (2DOF) structure is proposed. In design procedure, First Order plus Dead Time (FOPDT) model is used. The aim is to have good set point tracking and disturbance rejection and also maximum robustness to model uncertainties. The tuning strategy is based on using analytical rules and some conceptual rules about closed...

Software Conceptual Integrity has been considered a cardinal concern for design and development of software systems. But, except for verbal descriptions of desiderata, there were no formal tools to guarantee that conceptual integrity is attained. This paper proposes an axiomatic algebraic approach, based upon the assumption that the software system in each level of the system hierarchy is repre...

Improved support for modeling information systems involving time-varying, georeferenced information, termed spatio-temporal information, has been a longterm user requirement in a variety of areas, such as cadastral systems that capture the histories of landparcels, routing systems computing possible routes of vehicles, and weather forecasting systems. This chapter concerns the conceptual databa...

A disciplined design process does not guarantee a complete and flawless model of a planning problem, even with the existing methods and tools available in the AI community. A post-design project phase can identify essential hidden knowledge and directly impact the final planning system. The central theme of this paper is the design of a domain-independent framework to structure the post-design ...

Iran’s vast common natural gas resources and the necessity to extract and export it as Liquefied Natural Gas (LNG) to distances more than 3000Km opens a lucrative field for researchers to optimize LNG cycles. In this article heat integration in cryogenic cycles by determining interacycle partition temperature and optimizing refrigeration features like Subcooler, Presaturator, aftercooler, reboi...

Ontologies have recently become popular in the context of the Semantic Web as an appropriate tool for developing a common reference terminology and language in specific application domains. However, the design and specification of an ontology still does not follow a generally accepted methodology, but is considered to be a task based on perception and intuition. This talk tries to remedy this s...

this study assessed domestic customers' attitude for website usability and attractiveness in iran petrochemical commercial company (ipcc) in business to business (b2b) market space . a three-phase conceptual scheme for website evaluation is examined based on constructs such as attractiveness, navigation and transaction. a website with aesthetics appeal can help initial attraction, communic...

This paper explores the impact creative engineering design methodologies will have on the development of conceptual system designs for technically complex systems. To meet the requirements of the many innovations of products and their technology, these technically complex systems must be innovative to make effective use of them. This report generates a value-chain that shows the link between cr...

Interface definitions are important in complex system design because they contribute to the definition and satisfaction of functional flows. Design structure matrix approaches have only recently focused on supporting the challenge of integrating possible interface types in conceptual design. We propose a physical interface data model to define the interface design space and thus support interfa...