Cloud computing is a new paradigm that offers several advantages in terms of scalability, maintainability, high availability, efficiency and data processing. Infrastructure and applications are moved to the cloud and provided as a pay-for-use service. When designing a cloud infrastructure, it is critical to assure beforehand that the system will be able to offer the desired level of QoS (Qualit...

Cloud-TM is a highly innovative data-centric middleware platform, aimed at facilitating development and abating operational and administration costs of cloud applications. The Cloud-TM platform is designed from the grounds up to meet the scalability and dynamicity requirements of cloud infrastructures, and is the result of a 3 years long collaboration between 2 academic and 2 industrial partner...

Recently IT infrastructures change to cloud computing, the demand of cloud data center increased. Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared computing resources that can be rapidly provisioned and released with minimal management effort, the interest on data centers to provide the cloud computing services is increasing economically and v...

-The digital creation of cloud is important for many applications in computer graphics, including outdoor simulations and the digital rendering of atmospheric effects. Unfortunately, it is still difficult to simulate realistic cloud with interactive frame rates due to its peculiar microstructures and complex physical process of formation. Realistic simulation of cloud turns to be one of the mos...

Cloud Computing is an alluring technology which provides elasticity, scalability and cost-efficiency over a network. In recent years, Data security is considered as the measure issue leading towards a hitch in the adoption of cloud computing. Data privacy, Integrity and trust issues are few severe security concerns leading to wide adoption of cloud computing. The proposed model has sufficient f...

This paper represents an economic cost model for cloud computing aiming at comprising all kinds of cost of a commercial environment. To extend conventional state-of-the-art models considering only fixed cost, we developed a concise but comprehensive analytical model, which includes also variable cost allowing for the development and evaluation of business strategies for cloud environments. Thes...

Cloud computing services have grown rapidly over the years. Government agencies are also interested in cloud-based provision for their E-government processes. Despite the advantages of cloud-related technologies, there are many security issues as well that fall into several categories of breaches with serious impacts. All these breaches have serious legal and reputational implications. Therefor...

Cloud brokers have been recently introduced as an additional computational layer to facilitate cloud selection and service management tasks for cloud consumers. However, existing brokerage schemes on cloud service selection typically assume that brokers are completely trusted, and do not provide any guarantee over the correctness of the service recommendations. It is then possible for a comprom...

An increasing number of cloud services has been emerging in the recent years. Amazon, gogrid, rackspace, to name a few, are several most popular cloud service providers. Users need a tool to discover the available options and to suggest the most appropriate alternatives. CB-Cloudle, as a cloud service search engine, could satisfy such users’ need. In this work, a centroid-based search engine wi...