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The inaccuracy of cost estimation in feasibility study and design stage is one of main reasons that make investment of railway construction projects out of control in China. In those two stages cost estimations are affected by many uncertain factors, and the relationship among them is nonlinear and traditional model is hard to solve them. This paper applies Cost-Significant (CS) theorem to simplify...
The inaccuracy of cost estimation in feasibility study and design stage is one of main reasons that make investment of railway construction projects out of control in China. In those two stages cost estimations are affected by many uncertain factors, and the relationship among them is nonlinear and traditional model is hard to solve them. This paper applies Cost-Significant (CS) theorem to simplify...
Supply chain management is increasingly important in modern enterprises. Various information systems have been developed in the domain of services-oriented supply chain management. But as the complexity of supply chain, there are still two big problems. On the one hand, most of the traditional supply chain management systems can not really achieve integration among different organizations. On the...
The container loading problem (CLP) is notoriously known to be NP-hard, an intrinsically difficult problem that is too complex to be solved in polynomial time on a system of serial computers. Heuristic algorithms are often the only viable option to tackle this type of combinatorial optimization problems. This article puts forward a heuristic algorithm based on a tertiary tree model to handle the CLP...
A carbon nanotube field emission display (CNT-FED) composed of a cathode, a gate electrode and an anode is fabricated. The device is analyzed by IR spectra. The gate electrode was fabricated using corrosion reaction. The luminance of the triode structure FED is measured
Supply chain management is increasingly important in modern enterprises. Various information systems have been developed in the domain of services-oriented supply chain management. But as the complexity of supply chain, there are still two big problems. On the one hand, most of the traditional supply chain management systems can not really achieve integration among different organizations. On the...
The rapid growth of user traffic in the Internet is driving routers to run at increasing bit-rates and have a very large number of ports. However, it is becoming more difficult to just increase the speed of ports. In a router, the centralized switching fabric is the single point of failure (SPF). As the number of line cards increases, the centralized switching fabrics become the bottleneck of the...
Today most routers consist of line cards and centralized switching fabrics. It is now more and more difficult to increase the speed of line cards. Each generation of routers consume more power, and it gets more difficult to package a router in one rack of equipment. The research on routers shifts from single-rack systems to multi-rack ones. Most switches in routers today reside out of line cards....
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