Information Technology

  2009 OCT 6 - (VerticalNews.com) -- "Nowadays, more and more companies are going to adapt themselves to restriction on the use of certain hazardous substances (RoHS) compliance and enforcement by leveraging product lifecycle management (PLM) technology," scientists in Shanghai, People's Republic of China report.

  "The paper presents a general framework that integrates the bill of material extensible markup language (XML) files from heterogeneous PLM systems to RoHS compliance management system. This framework is based on the use of Smart Client technology to obtain flexibility required for complex and distributed environments," wrote C.H. Zhou and colleagues ...read more

  2009 OCT 6 - (VerticalNews.com) -- "This paper presents the methods to move assembly variation analysis into early stages of aircraft development where critical partitioning, sourcing, and production decisions are often made for component parts that have not yet been designed. Our goal is to identify and develop variation prediction methods that can precede detailed geometric design and make estimates accurate enough to uncover major assembly risks," scientists writing in the Journal of Computing and Information Science in Engineering report ...read more

  2009 OCT 6 - (VerticalNews.com) -- According to a study from Xian, People's Republic of China, "Faithfully obtaining design specifications from customer requirements is essential for successful designs. The natural lingual, inexact, incomplete, and vague attributes of customer requirements make it very difficult to map customer requirements to design specifications."

  "In general design process, the design specifications are determined by designers based on their experience and intuition, and often a certain target value is set for a specification. However, it is on one hand very difficult, on the other hand unreasonable, so a suitable limit range rather than a certain value is preferred at the beginning of design, especially at the concept design process. In this paper, a simplified systematic approach of transforming customer requirements to design specifications is proposed. First, a two-stepped clustering approach for grouping customer requirements and design specifications based on the house of quality matrix is presented, by which the mapping is limited to within each group. To further simplify the inference mapping rules of customer requirements and design specifications, the minimal condition inference mapping rules for each design specification are extracted based on rough set theory," wrote N.G. Sun and colleagues ...read more