Similar product designs resemble each other and have similar attributes and characteristics. When examining a product design to create its process plan, design its ® xture, or estimate its manufacturing cost, manufacturing engineers often identify one or more similar products that the factory has manufactured in the past. They may do this from memory, from a ® le cabinet, or from a database (in...

Solid Models are the critical data elements in modern Computer-Aided Design (CAD) environments, describing the shape and form of manufactured artifacts. Their growing ubiquity has created new problems in how to effectively manage the many models that are now stored in the digital libraries for large design and manufacturing enterprises. Existing techniques from engineering literature and indust...

Today's manufacturing enterprises are facing increasing pressure due to globalization, uncertainties, and strict regulations, among others. To cope with aforesaid challenges, manufacturing enterprises need to enhance their monitoring and control of enterprise processes (i.e., business processes and associated manufacturing processes) within and across different enterprise levels. This results i...

Recent theory and experimental work in metapopulations and metacommunities demonstrates that long-term persistence is maximized when the rate at which individuals disperse among patches within the system is intermediate; if too low, local extinctions are more frequent than recolonizations, increasing the chance of regional-scale extinctions, and if too high, dynamics exhibit region-wide synchro...

The purpose of this study is to examine the relationship between local government services and the overall satisfaction of users with the e–recruitment website (e–job website) in Taiwan. A two–dimensional mean value matrix (TDMVM) technique was used to explore the identification, classification, and application of website service quality. The results show that the asymmetrical relationship betw...

this paper addresses the concept of co 2 laser beam machining (lbm) and development of intelligent knowledge base system (ikbs) for co 2 lbm. feature based design is used for acquiring design specification. for optimization of laser beam machining computer based concurrent engineering environment is used. the ikbs is linked to feature base cad system. the ikbs is also linked to material databas...

Chemical and physical quality attributes of herbal extract powders play an important role in the research and development of Chinese medicine preparations. The active pharmaceutical ingredients have a direct impact on the herbal extract's efficacy, while the physical properties of raw material affect the pharmaceutical manufacturing process and the final products' quality. In this study, tanshi...

Job shop scheduling (JSS) problems are optimisation problems that have been studied extensively due to their computational complexity and application in manufacturing systems. This paper focuses on a dynamic JSS problem to minimise the total weighted tardiness. In dynamic JSS, jobs’ attributes are only revealed after they arrive at the shop floor. Dispatching rule heuristics are prominent appro...

This paper proposes a product variety optimization method for both module combination and module attributes of multiple products. As manufacturing competition has become restricted with high profitability and external constraints, simultaneous design of multiple products, called product variety design etc., becomes an important strategy. The systems-based optimal design paradigm is essential fo...

Although the rough set and intuitionistic fuzzy set both capture the same notion, imprecision, studies on the combination of these two theories are rare. Rule extraction is an important task in a type of decision systems where condition attributes are taken as intuitionistic fuzzy values and those of decision attribute are crisp ones. To address this issue, this paper makes a contribution of th...