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To improve the local accessibility performance, some important services are usually replicated and maintained in multiple datacenters. A user can request any datacenter which hosts the required service. The traditional end-to-end path is gradually replaced by the end-to-service path. To resist the frequently occurred natural disasters or human-made faults, survivability technologies need to be deployed...
We study the problem of joint spectrum and storage resource backup (JSSRB) to improve the survivability of elastic optical datacenter networks (EODNs) for cloud services. An ILP model and heuristic algorithms are developed. Simulation results show that JSSRB can effectively improve the survivability and spectrum efficiency of EODNs.
Thin-film transistors (TFT) in hydrogenated amorphoussilicon, amorphousmetal oxide, andsmallmolecule and polymer organic semiconductors would all hold promise as potential device candidates to large area flexible electronics applications. A universal compact dc model was developed with a proper balance between the physical and mathematical approaches for these thin-film transistors (TFTs). It can...
In order to evaluate listed companies' comprehensive performance and formulate investment strategy, this paper establishes evaluation index system of listed companies' comprehensive performance according to the combining principle of scientific characteristic and rational characteristic, objective characteristic and advisable characteristic. Meanwhile by using factor analysis method the paper establishes...
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