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Hot tears are unacceptable defects, which can be found in final steel casting products. It is believed that a hot tear forms at the mushy zone with a high fraction of solid due to an applied tensile strain. In this work the simulation of the solidification and deformation processes are carried out using commercial software combined with a user-defined constitutive model. The shrinkage porosity information...
Location information is an important enabler for context aware applications required by next generation networks to provide personalized services. On the other side location knowledge is essential for some of the network main functions such as geographical routing, coverage management and power saving. Mobile devices containing a number of communication standards are able to exploit a heterogeneous...
This paper deals with the comparison in terms of goodput and fairness of different scheduling options for fixed WiMAX networks. An analytical approach has been adopted to determine the average system capacity for different scheduling options, thus highlighting that scheduling schemes have an important impact in WiMAX network planning. We have then compared via simulations different uplink scheduling...
The IEEE 802.16 standard defines MAC and physical layers for WiMAX networks, but it does not provide any recommendation for the scheduling algorithm that regulates resource assignment for both uplink and downlink. Focusing on the point-to-multipoint mode, where the base station decides about resource allocations in both uplink and downlink, this paper proposes a scheduling algorithm to support UGS...
This paper focuses on WiMAX since this wireless technology allows broadband communications. In particular, we provide here a preliminary study on MAC layer performance as well as a sensitivity study to its parameters. A simulation approach has been adopted, based on the ns-2 environment to investigate the impact that real-time traffic has on non-real-time traffic and vice versa. The study presented...
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