Task scheduling problem is one of the most important steps in using cloud computing environment capabilities. Different experiments show that although having an optimum solution is almost impossible but having a sub-optimal solution using heuristic algorithms seems possible. In this paper three heuristic approaches for task scheduling on cloud environment have been compared with each other. The...

Along with the increasing use of cloud services, security threats are also increasing and attack methods are becoming more diverse. However, there are still few measures and policies to deal with security incidents in the cloud environment. Although many solutions have been proposed through research on digital forensics for responding to security incidents, but it is still difficult to prove th...

Cloud computing is a novel technology which aims to handles and provides online services to the consumers. In order to have an efficient cloud environment and to use resources properly,task scheduling is the one of the issues which researchers attempt to propose applicable scheduling algorithms in this environment. Scheduling in distributed systems such as cloud computing and grid computing are...

Mobile Cloud Computing has become as a new IT paradigm because of the growth of mobile device like smartphone and appearance of Cloud Computing environment. This mobile cloud environment provides various services and IT resources according to users‘ requests, so an effective management of service and IT resources is required. Hence, this paper designs a context model based on ontology in mobile...

This paper describes the architecture for transparently using several di erent Cloud Resources from with the graphical Kepler Worklfow environment. This architecture was proven to work by implementing and using it in practice within the FP7 project EUFORIA. The clouds supported are the Open Source cloud environment OpenNEbula (ONE) and the commercial Amazon Elastic Compute Cloud (EC2). Subseque...

In this paper we present “Touching the Cloud”, a bi-manual user interface for the interaction, selection and annotation of immersive point cloud data. With minimal instrumentation, the setup allows a user in an immersive head-mounted display (HMD) environment to naturally interact with point clouds. By tracking the user’s hands using an OpenNI sensor and displaying them in the virtual environme...

A cloud system environment is considered as the framework to provide resource and service distribution to the users. These different environment forms are accessed by different users under the service specification. The constraints at different levels are negotiated between the providers and the users. The paper has defined the different cloud services relative to the SLA behavior. The paper al...

In this paper we present the utilization of cloud computing environment for fast network simulation of wireless ad hoc networks in 3D terrains. Considering 3D terrains involves larger amounts of data, thus the network simulation requires more compute intensive calculations. In this paper we evaluate the usage of cloud computing environment for network terrain aware simulation in order to optima...

The Infrastructure as a Service (IaaS) cloud computing model is widely used in current IT industry, providing the cloud users virtual machines as the executing environment. However, current executing environment the cloud provided is not trustworthy. For a user’s executing environment faces threats from malicious cloud users who aim at attacking the underlying virtualization software (virtual m...

There is vast demand of cloud computing are increases in the today’s era because of the on demand service of cloud computing. Our paper main direction is to make data communication better in the cloud environment. It means secure communication will be provided for preventing unauthorized access. We proposed an efficient approach by using RC4 mechanism to support encrypted data transmission in c...