This paper focuses on minimizing the capacity of DiffServ/MPLS networks taking into account two widely deployed bandwidth constraint models: the maximum allocation model (MAM) and the Russion doll model (RDM). With the given physical network and traffic demands, by optimizing Label Switched Paths (LSPs) resource allocation, route distribution, our designs aim at minimizing the link capacity of the total network. The optimization problems are formulated as integer linear programming (ILP) models first, and then, since the ILP formulation is not adapted for large-scale network, two novel fast algorithms are proposed. Numerous simulation results for a variety of networks indicate that the performances of our proposed algorithms are close to the optimal results.
The a-C:H/SiOx:H multilayers were prepared by rf magnetron sputtering. Small angle x- ray diffraction, Auger depth profile shows periodicity of the films very well. The interfacial roughness parameters (xi) determined by the x-ray diffraction is 0.49 nm, the interface width di obtained from Auger depth profile ranges from 0.78 nm to 1.1 nm. The infrared spectroscopy shows Si-C bond vibration absorption at interface.
We have measured the optical emission spectra of glow discharge plasma of methane in the diamond-like carbon film deposition and analyzed the relationship between the optical emission spectra and deposition parameters, such as rf power and gas pressure. The infrared absorption of films has also been measured and compared with the results of optical emission spectra measurements.
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