Methods for incorporating imprecision in engineering design decision-making are briefly reviewed and compared. A tutorial is presented on the Method of Imprecision (MoI), a formal method, based on the mathematics of fuzzy sets, for representing and manipulating imprecision in engineering design. The results of a design cost estimation example, utilizing a new informal cost specification, are pr...

A system of softwares was developed in order to aid chemical reactor operation and design, as a tool to define operational policies and support process engineers. A C++ software, using artificial intelligence techniques, acts as an Expert System, guiding the user throughout reactor simulation and providing results in an easily comprehensible form. A Fortran software was used to simulate a react...

There are three evolving facets to design: 1) the artifact to be designed, 2) the design process, and 3) the tools available to aid the design process. They are evolving because first, the design process is becoming more complex due to the need to consider the entire product life-cycle—from conception to manufacturing to sales to maintenance. Second, the artifacts of design are changing in that...

Design is the creative process by which our understanding of logic and science is joined with our understanding of human needs and wants to conceive and refine artifacts that serve specific human purposes. Design is central to the practice of systems engineering and systems engineers understand that design is a creative, iterative, decision-making process. In this paper, we provide an overview ...

performing a probabilistic study rather than a determinist one is a relatively easy way to quantify the uncertainty in an engineering design. due to the complexity and poor accuracy of the statistical moment methods, the monte carlo simulation (mcs) method is wildly used in an engineering design. in this work, an mcs-based reliability analysis was carried out for the stability of the chain pill...

The design and implementation of privacy requirements in systems is a difficult problem and requires the translation of complex social, legal and ethical concerns into systems requirements. The concept of “privacy by design” has been proposed to serve as a guideline on how to address these concerns. “Privacy by design” consists of a number of principles that can be applied from the onset of sys...

Subject review Combining Industrial and Functional Design methodologies for the development of new products and systems requires a broad understanding of human behaviour and industrial activities. The requirements of international standards, protection of the environment and the ability to make a profit on sales requires a sound attitude and approach to succeed, especially in current economic c...

Many engineering design problems involve a combination of both continuous anddiscrete variables. However, the number of studies scarcely exceeds a few on mixed-variableproblems. In this research Particle Swarm Optimization (PSO) algorithm is employed to solve mixedvariablenonlinear problems. PSO is an efficient method of dealing with nonlinear and non-convexoptimization problems. In this paper,...

Software engineering researchers and practitioners have long had an uncertain and uneasy relationship with design. It is acknowledged that software design is critical and major strides have been made in advancing the discipline, but we all are keenly aware that something “is just not quite right” and that design remains one of the least-understood aspects of software engineering. In this paper,...