Cloud Security is one amongst most significant problems that have attracted plenty of analysis and development effort in past few years. Notably, attackers will explore vulnerabilities of a cloud system and compromise virtual machines to deploy additional large-scale Distributed Denial-of-Service (DDoS). DDoS attacks sometimes involve early stage actions like multi-step exploitation, low freque...

Computing clusters have been one of the most popular platforms for solving Many Task Computing(MTC) problems, especially in the case of loosely coupled tasks. However, building and managing physical clusters exhibits several drawbacks:1)Major investments in hardware, specialized installations, and qualified personal; 2) Long periods of cluster under-utilization; 3)Cluster overloading and insuff...

Cloud Computing is a business model revolution more than a technological one. It capitalized on various technologies that have proved themselves and reshaped the use of computers by replacing their local use by a centralized one where shared resources are stored and managed by a third-party in a way transparent to end-users. With this new use came new needs and one of them is the need to search...

Cloud Computing is a business model revolution more than a technological one. It capitalized on various technologies that have proved themselves and reshaped the use of computers by replacing their local use by a centralized one where shared resources are stored and managed by a third-party in a way transparent to end-users. With this new use came new needs and one of them is the need to search...

Cloud computing is an Internet-based computing model. This model enables access to resources and services on demand. Cloud computing users have applications with different Quality of Service requirements. On the other hand, there are different cloud service providers offering services with different qualitative characteristics. Determining the best cloud computing service for a specific applica...

Cloud computing requires scalable and cooperative sharing the resources in various organizations by dynamic configuring a virtual organization according to user’s requirements. Ontology-based representation of Cloud computing environment would be able to conceptualize common attributes among Cloud resources and to describe relations among them semantically. However, mutual compatibility among o...

The need for calculating actions has been emerged everywhere and in any time, by advancing of information technology. Cloud computing is the latest response to such needs. Prominent popularity has recently been created for Cloud computing systems. Increasing cloud efficiency is an important subject of consideration. Heterogeneity and diversity among different resources and requests of users in ...

The cloud computing paradigm provides a shared pool of resources and services with different models delivered to the customers through the Internet via an on-demand dynamically-scalable form charged using a pay-per-use model. The main problem we tackle in this paper is to optimize the resource provisioning task by shortening the completion time for the customers’ tasks while minimizing the asso...

Cloud computing is a paradigm in high performance computing, focuses on provisioning ubiquitous computing with the help of Software and/or Hardware Virtualization. In Mobile Cloud Computing (MCC), mobile/portable devices access cloud resources through wireless communication(GPRS/3G/WiFi etc). MCC enhances the mobility of the cloud user which solves cloud computing issues such as Unreliability, ...