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Due to the abstraction of physical resources and heavy use of virtualization in the context of Service Function Chaining (SFC), verification of the processing and that forwarding of traffic is handled correctly is very challenging. Such verification requires explicit support from the physical cloud infrastructure and — more important — relies on correct configuration and operation of the Cloud Management...
Cloud services are gaining popularity with times. Service level agreement (SLA) serves a basic understanding between the clients and cloud service providers (CSP). Ensuring secured and adequate service is a basic need of the customers. In this work a set of compliance parameters for cloud service level agreement is identified. A generic rule base is designed to empower the process with an automated...
This research aims at validating the vital factors that affecting the continuous use of cloud computing services through literature review and experts' evaluation. These factors are factors that have an effect on the decision makers to forge ahead in the use of cloud computing services in their various organizations. Semi-structured interviews using email were carried out with twenty-three experts...
By investigating the current situation of university library's digital and informational development, this paper analyzes the opportunities and challenges brought by cloud computing technology to the development of libraries. Two strategies of renting cloud services and building cloud platform are put forward to realize the cloud computing service of Digital Library in big data environment.
The elastic provisioning of Virtual Infrastructures (VIs) enables a dynamic management of cloud resources (computing and communication) in order to meet the hosted application's requirements. Thus, to perform elasticity requests, providers usually rely on reallocation mechanisms and policies. The concerns regarding the environment and the operational costs indicate energy consumption of the data centers...
Through analyzing the characteristics of the data processing in the environment of cloud computing, the author puts forward the distributed optimization storage model based on hash distribution. Based on massive amounts of data distribution, this model completed the data backup protocol based on master copy of distributed design and the Paxos distributed system protocol design on the basis of the...
Computer science solutions for molecular biology problems are often presented in the form of workflows. There is a set of activities performed by different processing entities through managed tasks. Knowledge about the data trajectory throughout a given workflow enables reproducibility by data provenance. In order to reproduce an in silico bioinformatics experiment one must consider other aspects...
We consider an infrastructure of networked systems with discrete components that can be reinforced at certain costs to guard against attacks. The communications network plays a critical, asymmetric role of providing the vital connectivity between the systems. We characterize the correlations within this infrastructure at two levels using (a) aggregate failure correlation function that specifies the...
Although federated cloud computing has emerged as a promising paradigm, autonomous orchestration of resource utilization within the federation is still required to be balanced on the basis of workload assignment at a given time. Such potential imbalance of workload allocation as well as resource utilization may lead to a negative cloudburst within the federation. The analytical models found in the...
A cloud platform records a wealth of information regarding program execution. Most cloud service providers offer dashboard monitoring tools that visualize resource usage and billing information, and support debugging. In this paper, we present a tool that visualizes cloud execution logs for a different goal — to facilitate program understanding and generate documentations for an application using...
With the rapid growth of Cloud Computing technologies, enterprises are increasingly deploying their services in the Cloud. Dynamically priced cloud resources such as the Amazon EC2 Spot Instance provides an efficient mechanism for cloud service providers to trade resources with potential buyers using an auction mechanism. With the dynamically priced cloud resource markets, cloud consumers can buy...
Cloud computing technology is causing a shift in Information Communication Technology usage by transforming the approaches businesses employ information technology services. This benefits computing usage by allowing users to share hardware resources via multiplexing of virtual machines which are the basic units of cloud computing. Small and new businesses which often lack good financial standing but...
We propose a framework to create Learning Object based on the knowledge management model known as Community of Practice CoP, the framework's elements are: technology, people and process, the technology is a Cloud Computing, people are the user or learning object creators, and the process is a knowledge management model that makes a better interaction between those elements. The principle of the framework...
The panic among medical control, information, and device administrators is due to surmounting number of high-profile attacks on healthcare facilities. This hostile situation is going to lead the health informatics industry to cloud-hoarding of medical data, control flows, and site governance. While different healthcare enterprises opt for cloud-based solutions, it is a matter of time when fog computing...
The advent of Cloud has aided mobile devices in performing computation intensive tasks with the virtue of offloading. However, this leads to communication with the Cloud, which results in high energy consumption. Moreover, communication over wireless medium has the risk of intermittent connectivity with Cloud. Hence, there is an urgent need for providing a trade-off between energy consumption and...
All over the world, the crowd management is a big challenge facing the organizations of any event with large number of people. It is clear that this task is becoming more difficult and complicated when the event is larger. In the recent few years, the there are many new technologies developed that can be utilized in crowed management. Among these new technologies is wireless communications, cloud...
The distinguishing feature of the Fog Computing (FC) paradigm is that FC spreads communication and computing resources over the wireless access network, so as to provide resource augmentation to resource and energy-limited wireless (possibly mobile) devices. Since FC would lead to substantial reductions in energy consumption and access latency, it will play a key role in the realization of the Fog...
Security is a major challenge in Cloud Computing. Attacks exploiting resource virtualization vulnerabilities such as cross-VM side-channel, VM escape, and VM hopping constitute significant threats. Hosted VMs may act as a potential attack-source against neighboring VMs or cloud infrastructure. Inspired by the sea-chameleons camouflaging process to evade predators, in this paper we propose an Online...
Modeling and simulation have shown essential for forecasting load and resource availability in large-scale complex scenarios. The growth of urban environments, as well as the use of ICT in enabling applications and services, has encouraged several works on the modeling of transportation. High mobility of vehicles in such a context consists of a significant challenge in modeling traffic. Several microscopic...
Cloud computing is attracting an increased number of researches in delivering modeling and simulation abilities as a service. Among which, simulation execution as a service (EaaS) is a hot spot. It aims at releasing users from complex running configurations and meanwhile guaranteeing the QoS requirements. Under the motivation, focusing on EaaS for parallel and distributed simulation (PADS) application,...
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