This paper presents an architectural framework, which identiies the core services necessary for a secure Internet-based communication and information infrastructure. We show how these services can be realized using existing software packages and new technologies. Then, we turn to the development of security infrastructures using the rapid prototyping environment \Wafe" and the extensible Web br...

We describe our experience in designing object-oriented software for a sparse direct solver. We discuss , a library of sparse matrix ordering codes and Oblio, a code implementing the remaining steps in a direct solver. EEciencies comparable to procedural codes are obtained by careful implementations of eecient algorithms. We discuss the other goals of our design: managing complexity, simplicity...

performances of electronic and mechanical draft control systems on a mf399 tractor were the objectives of the study to be evaluated and compared under field conditions. hence, the effects of two draft control systems (mechanical and electronic) under four ground speed levels and three set values of draft levels on rear wheel slippage, fuel consumption, compressive force within the top link and ...

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in this research, a cold model of internally circulating fluidized bed is investigated. the aim is to find the effects of some of the operating parameters on the performance of the reactor. experiments were carried out in a glass column (30 mm i.d. and 25 cm height) with a centrally located draft tube (11 mm i.d. and 5 or 7 cm height). the bed was loaded with white silica particles (dp = 0.15 -...

1 Abstract Today most VLSI circuits are built in silicon using CMOS transistors. Developments in design automation and process fabrication have resulted in the progressive increase of the number of transistors per chip and decrease in the size of the transistors. But transistor designers are fast approaching fundamental physical barriers to further size reduction. Thus engineers are looking at ...