With the popularity of cloud computing, it becomes crucial to provide on-demand services dynamically according to the user’s requirements. Reliability and energy efficiency are two big challenges in cloud computing systems that need careful attention and investigation. This paper first presents a review of existing techniques for reliability and energy efficiency and then identifies the researc...

151 out of the 154 negative cloud to ground flashes and 449 out of 540 strokes were detected by the lightning location system (LLS). This results in a flash detection efficiency of 98% and a stroke detection efficiency of 83%. Only two additional cloud to ground strokes (0.4%) were detected but misclassified as cloud discharges. The analysis of 37 flashes which exhibit at least two strokes with...

We present PRISM, a privacy-preserving scheme for word search in cloud computing. Assuming a curious cloud provider, privacy of data stored in the cloud becomes an issue. The main challenge in the context of cloud computing is to design a scheme that achieves privacy while preserving the efficiency of cloud computing. Main approaches like simple encryption, Private Information Retrieval (PIR) a...

Elasticity is a key feature of cloud computing in which the resources can be dynamically changed on-the-fly. In the HPC scenario, a user may want to adjust the resources availability to increase performance. A way to measure performance and efficiency of parallel applications with fixed number of resources is the speedup metric. However this metric does not apply to elastic cloud infrastructure...

Cloud computing has been popular as the IT architecture. Cloud service providers offer many services based on cloud computing. Cloud storage service is the cloud services which can provide a huge storage space to solve the bottleneck of the storage space of local end users. However, cloud storage service may have data security because the users’ data is not stored in their own storage. In this ...

Due to the advancement in mobile devices and wireless networks mobile cloud computing, which combines mobile computing and cloud computing has gained momentum since 2009. The characteristics of mobile devices and wireless network makes the implementation of mobile cloud computing more complicated than for fixed clouds. This section lists some of the major issues in Mobile Cloud Computing. One o...

This study uses measurements of radiation and cloud properties taken between January and August 1998 by three Tropical Rainfall Measuring Mission (TRMM) instruments, the Clouds and the Earth’s Radiant Energy System (CERES) scanner, the TRMM Microwave Imager (TMI), and the Visible and InfraRed Scanner (VIRS), to evaluate the variations of tropical deep convective systems (DCS) with sea surface t...

Migration of Virtual Machine (VM) is a critical challenge in cloud computing. The process to move VMs or applications from one Physical Machine (PM) to another is known as VM migration. In VM migration several issues should be considered. One of the major issues in VM migration problem is selecting an appropriate PM as a destination for a migrating VM. To face this issue, several approaches are...

*Correspondence: [email protected] †Equal contributors Department of Applied Mechanics, Chalmers University of Technology, Hörsalsvägen 7, 41258 Göteborg, Sweden Abstract Background: Computational homogenization is a well-established approach in material modeling with the purpose to account for strong micro-heterogeneity in an approximate fashion without excessive computational cost. How...

migration of virtual machine (vm) is a critical challenge in cloud computing. the process to move vms or applications from one physical machine (pm) to another is known as vm migration. in vm migration several issues should be considered. one of the major issues in vm migration problem is selecting an appropriate pm as a destination for a migrating vm. to face this issue, several approaches are...