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Cloud computing has emerged as the primary and popular computing paradigm recently. Since cloud users move continuously, sustaining the required quality of service (QoS) in a cost effective manner is very challenging. For maintaining the required QoS for a moving user, the current cloud systems use some of the existing service replication or/and migration strategies. However, those policies become...
Cloud federation is a group of aggregated providers, who are mutually cooperating and collaborating to share their resources in order to improve each other services. It has lured the attention of commercial industries towards itself for its effective utilization of cloud resources. Effective management of the resource is very much required in order to increase the profits of an individual service...
With the increase in number of mobile devices deployed in cloud computing, the demand of context-aware services to assign increases. Indeed, Information about the user's environment exposes new challenges to cloud computing in terms of location-aware, time-aware, device-aware and personalized applications to cope with the constraints of mobile devices in matters of interaction abilities and communication...
The advancement of mobile cloud computing (MCC) has the potential to improve communication and information during disaster emergency operation. Many studies from different countries have addressed different approaches to implement mobile cloud technologies during disaster operation. However, there has been a lack of any consolidated evidence-based study to evaluate the MCC from the dual perspectives...
Cloud service certifications attempt to assure a high level of security and compliance. However, considering that cloud services are part of an ever-changing environment, multi-year validity periods may put in doubt the reliability of such certifications. We argue that continuous auditing of selected certification criteria is required to assure continuously reliable and secure cloud services and thereby...
With rapid technological advancements, cloud marketplace witnessed frequent emergence of new service providers with similar offerings. However, service level agreements (SLAs), which document guaranteed quality of service levels, have not been found to be consistent among providers, even though they offer services with similar functionality. In service outsourcing environments, like cloud, the quality...
We consider robust resource allocation of services in Clouds. More specifically, we consider the case of a large public or private Cloud platform such that a relatively small set of large and independent services accounts for most of the overall CPU usage of the platform. We will show, using a recent trace from Google, that this assumption is very reasonable in practice. The objective is to provide...
Cloud computing is one of the most prominent technological trends as it allows modernization of healthcare organization. The purpose of this study is to explore the factors that affect adoption of integrated cloud-based e-health record EHR system in healthcare organizations in Jordan based on TOE framework. The study is done by conducting interviews with IT experts in healthcare organization in Jordan...
In software and requirements engineering, requirements elicitation is considered an essential step towards building successful systems. Despite extensive existing research in the field of distributed requirements engineering, the topic of requirements elicitation for cloud systems remains still uncovered. Cloud challenges (e.g., heterogeneous and globally distributed users, volatile requirements,...
With the fast adoption of Services Computing, even more driven by the emergence of the Cloud, the need to ensure accountability for quality of service (QoS) for servicebased systems/services has reached a critical level. This need has triggered numerous researches in the fields of trust, reputation and provenance. Most of the researches on trust and reputation have focused on their evaluation or computation...
The problem of device independent data access has been answered by the cloud computing technology. The flexibility of device independence has driven many users, and the no maintenance strategy has driven many organizations towards this technology and the number is increasing by the day. Therefore energy efficient computing on the cloud processors has become inevitable. In this paper, we present a...
Software as a Service (SaaS) is a software delivery paradigm in which the product is not installed on-premise, but it is available on Internet and Web. The customers do not pay to possess the software itself but rather to use it. Hence, we see increasing number of organizations adopting SaaS. However, each customer is unique, which leads to a very large variation in the requirements off the software...
While provenance research is common in distributed systems, many proposed solutions do not address the security of systems and accountability of data stored in those systems. In this paper, we survey provenance solutions which were proposed to address the problems of system security and data accountability in distributed systems. From our survey, we derive a set of minimum requirements that are necessary...
This paper presents a method of developing an instrument for Cloud Computing (CC) adoption by Small and Medium-sized Enterprises (SMEs). To achieve this outcome, this paper firstly evaluates the suitability of Technology-Organization-Environment Framework and Actor Network Theory for CC adoption by SMEs. It then explains how to discover the constructs and their relationships, and subsequently, how...
We consider several reliability problems that arise when allocating applications to processing resources in a Cloud computing platform. More specifically, we assume on the one hand that each computing resource is associated to a capacity constraint and to a probability of failure. On the other hand, we assume that each service runs as a set of independent instances of identical Virtual Machines, and...
This paper presents an experience report documenting the design and development of an agent-based distributed software system called the “Feed Analyzer” a system deployed to Microsoft's Windows Azure Cloud Service. Cloud services are emerging as an increasingly attractive deployment option given that system developers can leverage the power of a scalable infrastructure without the need to purchase...
Cloud Computing, as one of the most promising computing paradigms, has become increasingly accepted in industry. Numerous commercial providers have started to supply public Cloud services, and corresponding performance evaluation is then inevitably required for Cloud provider selection or cost-benefit analysis. Unfortunately, inaccurate and confusing evaluation implementations can be often seen in...
Context information is traditionally collected from distributed digital artifacts and services and made available to similarly distributed, and often mobile, context consuming applications via context brokers or servers. Contextual data has a strong temporal element i.e. it remains valid for a period of time, and hence is an ideal candidate for caching strategies that aim to exploit such locality...
Cloud Computing is evolving as a key technology for sharing resources. Grid Computing, distributed computing, parallel computing and virtualization technologies define the shape of a new era. Traditional distance learning systems lack reusability, portability and interoperability. This paper sees cloud computing ecosystem as a new opportunity in designing cloud computing educational platforms where...
Cloud computing is an emerging paradigm able of flexibly offering IT resources and services over the Internet. Cloud computing's high flexibility needs novel software engineering approaches, and technologies to deliver agile, flexible, scalable yet secure software solutions with full technical (e.g. QoS, service continuity etc.) and business gain (e.g. profit, corporate value, utility etc.). Agile...
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