In this paper, we develop a unified model of a hierarchical Video-on-Demand(VoD) system by integrating the storage and the network subsystems. Rather than restricting the analysis to an isolated subsystem the performance of the VoD system is analyzed as an end-to-end system. On a system-wide basis, request handling and admission control policies are designed to minimize global performance metri...

Flash memory is a storage class memory widely used in mobile computing systems due to its small size, low power consumption, fast access time, and high shock and vibration resistance. Flash memory based storage systems exploit chip-level parallelism and hide the latency of flash memory operations through request scheduling. However, conventional scheduling techniques are inadequate for handling...

pistachio nut is one of the most important export crops in iran. for prevention of rancidity and to ensure good quality, pistachio must be harvested in a short time and be prepared for drying in 24h.the ohadi variety of iranian raw dry pistachio nuts was selected for the experiments. instrumental hardness and sensory characteristics of pistachio nuts such as: flavor , texture and total acceptan...

Background: Female infertility varies widely by geographic location around the world. In 2010, there was an estimated 48.5 million infertile couples worldwide, and from 1990 to 2010 there was slight change in levels of infertility in most of the world. In 2010, the countries with the lowest rates of female infertility included the South American countries of Peru, Bolivia, Ecuador and Bolivia, ...

The future of data management for LHC at CERN brings new requirements for scalability and a change of scheduling and data handling compared to the HSM mass storage system in use today. A forecast for disk based storage volume at CERN in 2015 is on the Exabyte scale with hundreds of millions of files. A new CERN storage architecture is represented as a storage cluster with an analysis, archive a...