This report discusses design optimizationmethods, many of which are equivalent to classical optimal control methods [1, 2] in the sense that Newton's method is applied to the necessary conditions for optimality. In this context, many design methods are minor variants of the classical Lagrange-Newton method and can be understood by using the theory for Newton's method. In many application areas,...

In this paper is presented the design structure matrix method for project management relations. This method differs from traditional methods of project management because it focuses on the presentation of information flow, and the effects that these flows have on the flow performance of the overall project. This method is used for solving problem in wind tunnel "Armfield C15-10", where is prese...

In this paper we introduce a quality-driven architecture design (QAD) method with three phases: system analysis, conceptual architecture design and design of a concrete architecture. Architecture design phases produce an aspect of software architecture at two different levels of abstraction. System analysis provides a bigger picture of the software system and its properties. Conceptual architec...

components Software templates Constraints Requirements Concrete component design

this paper gives an overview of the difficulties associated with the design of hard rock pillars in south african mines. recent examples of large scale pillar collapses in south africa suggest that these were caused by weak partings which traversed the pillars. currently two different methods are used to determine the strength of pillars, namely, empirical equations derived from back analyses o...

carbon nanotube, a new structure of carbon element, is composed of graphene sheets rolled into closed concentric cylinders with diameter of the order of nanometers and length of micrometers. liquid arc discharge was used for fabrication of carbon nanotubes, and subsequently a modified acid treatment method applied for purification stage. a statistical design of experimental (doe) (taguchi metho...