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By applying and increasing the number of physical separate host's requirements, for each operating system, the overall cost of data centers and clusters increase. For this reason, the owners of the physical host use virtualization technologies. Among the main motivations for using virtualization technologies these examples could be mentioned: Reducing arise the overall cost in the software and hardware...
Improving energy efficiency is a multidimensional challenge regarding cloud computing environments management, which can directly reduce the operating costs and carbon dioxide emissions, while increasing the system reliability. An energy-efficient resource allocation approach for real-time cloud services is proposed in this paper. Several policies for provisioning of virtual machines (VMs) and hosts...
Virtualization enables data centers to share physical resources between virtual private servers (VPS) cost-effectively. Live migration of virtual machines (VM) is one of the most important capabilities that have been provided by the virtualization. It enables the data center's administrators to apply the load balancing properly. Sending large number of VM's memory pages wastes the data center's bandwidth...
Infrastructure-as-a-service cloud provides a suitable environment where cloud users can run data-intensive applications and store their required data files. The performance of data-intensive applications strongly depends on data transmission delay. This delay is a function of the size of data files, the location of virtual machines that run the applications as well as the allocation of data rates...
The density estimation of diverse sensor types in a heterogeneous sensor network is a useful and challenging service that can be applied in clustering schemes, node redeployment, and sleep mode scheduling. Energy efficiency is one of the main requirements for any wireless sensor network service. Besides, the service has to provide a fresh version of the estimation to each node. Network dynamics, especially...
Ontology modularization is an important part of ontology engineering for which the reduction of complexity and size of ontology, either breaks an ontology down to all the constituent parts(ontology partitioning) or extracts only a small part of the ontology(module extraction). The presented approach in this essay is concentrated on ontology partitioning. To have complete segments, we initially do...
Need for computational power grows faster and faster so that we have “Cloud Computing” concept emerged from this need. In the other hand with growing popularity of computing and communication, request for more energy power increases and area of Green Computing try to moderate this procedure with revising old computing method or inventing new method to have more efficient computing material that would...
In this work, we show how to discover a semantic web service among a repository of web services. A new approach for web service discovering based on calculating the functions similarity. We define the Web service functions with Ontology Web Language (OWL). We wrote some rules for comparing two web services parameters. Our algorithm compares the parameters of two web services inputs/outputs by making...
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