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The cloud computing system (CCS) is with large scale and complex structure. Benefited from its enabling technology, virtualization, the CCS has the characteristics of elastic, providing on-demand service according to resource scheduling strategy. Different resource scheduling strategies lead to different operation hours, which have different effects on the reliability of cloud computing infrastructure...
Green IT is a concept about wisely, efficiently, and environmentally technology (IT) usage or adoption that exists due to the negative impacts of technology (IT) growth. There are some examples about Green IT applications that are used by the organization (firm) as the support tools of its business processes such as Paperless Office (PLO), E-Meeting, Remote System, and Cloud Computing. Although Green...
In the past few years, datacenter (DC) energy consumption has become an important issue in technology world. Server consolidation using virtualization and virtual machine (VM) live migration allows cloud DCs to improve resource utilization and hence energy efficiency. In order to save energy, consolidation techniques try to turn off the idle servers, while because of workload fluctuations, these offline...
Context: Software has become more complicated, dynamic, and asynchronous than ever, making testing more challenging. With the increasing interest in the development of cloud computing, and increasing demand for cloud-based services, it has become essential to systematically review the research in the area of software testing in the context of cloud environments. Objective: The purpose of this systematic...
Security and privacy challenges are the most important obstacles for the advancement of IT-based on-demand services and cloud computing as an emerging technology. To ensure data confidentiality and fine-grained access control in cloud-based environments, stored data and resources needs to be re-encrypted periodically or based on special mechanisms such as revoked user-based or manual re-encryption...
In this paper, we present an experimental set-up reproducing a convergent 5G service scenario spanning over SDN-based Edge network, Cloud and IoT domains. To address reliability and robustness requirements of future 5G networks, the set-up also includes an SDN orchestrator able to adaptively provision data delivery paths connecting service components running in those different domains. In particular,...
In public sectors, the trend of using electronic information sharing has transformed the traditional ways of information sharing either vertically or horizontally. The horizontal functioning of information sharing means sharing information within same level of organization such as sharing information between local governments. The vertical functioning of information sharing means sharing information...
The impact of cloud computing and sharing physical resources simultaneously between several virtual instances can be crucial for the designing real-time and time-critical applications. This especially applicable to cases when the target is to deliver reliable network services. In this paper, we primarily aim at investigating the timing behavior in the cloud environments where the resources are shared...
The existing network platform can not meet the new launch vehicle launch costs, and there is the need for high reliability storage and application of massive data. A scheme of measuring and controlling network system based on cloud platform is put forward. The centralized management of system resources is realized. Enhanced resource utilization and system scalability, and reduced the development cost...
Smart buildings are run by Building Management Systems (BMS)that are cyber-physical systems that control and monitor a numberof buildings’ subsystems. BMS have not been sufficiently prioritizedon their reliability measures. Reliability, however, along withsecurity, safety, energy performance and occupant comfort, are veryimportant for certain classes of BMS [1]. This is especially true forBMS of critical...
Secure deduplication using convergent encryption eliminates duplicate data and stores only one copy to save storage costs while preserving the security of the outsourced data. However, convergent encryption produces a number of encryption keys, of which size is linear to the number of different data. Although a deduplication scheme has been proposed for efficient convergent key management recently,...
Cloud service monitoring is a critical need for both providers and customers to assess the state of resources and the level of delivery of services. However, existing Cloud service monitoring methods are typically inapplicable in case the targeted service parameters are inaccessible, e.g., Cloud Service Providers do not allow external access to some service parameters for varied reasons (proprietary...
As cloud computing becomes increasingly popular, cloud providers compete to offer the same or similar services over the Internet. Quality of Service (QoS), which describes how well a service is performed, is an important differentiator among functionally equivalent services. As a result, how to help users to find cloud services that meet their QoS requirements becomes an important problem. In this...
The commonly existing employed centralized algorithms fail to be adaptive to the new storage pattern on mobile edge cloud. To address this issue, we propose an alternating-direction-method-of-multipliers-based collaborative storage algorithm called MECCAS (Mobile Edge Cloud Collaborative Storage). The proposed MECCAS is able to minimize the delay of task execution and total costs for the overall operation,...
It is a challenge to ensure data integrity for cloud-based Internet of Things (IoT) applications because of the inherently dynamic nature of IoT data. The available frameworks of data integrity verification with public auditability cannot avoid the Third Party Auditors (TPAs). However, in a dynamic environment, such as the IoT, the reliability of the TPA-based frameworks is far from being satisfactory...
Despite employing the architectures designed for high service reliability and availability, cloud computing systems do experience service outages and performance slowdown. In addition to these, large-scale cloud systems experience failures in their hardware and software components which often result in node and application (e.g., jobs and tasks) failures. Therefore, to build a reliable cloud system,...
With the development of the cloud classroom and its learning environment, improving students' attitudes using the cloud classroom is very significant. This study invests the attitudes towards the cloud classroom with 281 students in high school via a questionnaire survey. We use the structural equation model to test the relationship between students' attitudes and learning resources, perceived responsiveness...
Immediately after a disaster, the normal telecommunication infrastructure, including wired and wireless networks, is often seriously compromised and cannot guarantee regular coverage and reliable communications services. These temporarily-missing communications capabilities are crucial to rescuers and affected citizens as the responders need to effectively coordinate and communicate to minimize the...
Many Cyber-Physical Systems (CPS) at different scales are being developed for a variety of applications that provide valuable interactions between the cyber world and the physical systems and environments. However, the development of these systems face many challenges due to the complexity of the applications. An appropriate middleware is needed to provide infrastructural support and assist the development...
Cloud computing platforms provide easy and transparent access to a company's storage infrastructure through services. Commonly known as Storage as a Service (STaaS), it allows users to store their data at remote disks and access them anytime from any place. On the other hand, with the deployment of Electronic Document Management (EDM) to manage the insertion, sharing, and retrieval of information...
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