Cloud computing and big data: Technologies and applications

Abstract

to cloud computing and big data technologies, applications, and services.Authors of the selected papers were invited to submit an expanded version to this special issue. These papers were reviewed in the same manner as regular submissions to this edition. After rigorous reviews, 7 papers were accepted for publication and are briefly described in the rest of this section. and the results show that the proposed algorithm outperforms 2 other task-scheduling algorithms in cost and throughput. | Mobile and cloud computing technologiesPrivacy and security in cloud computing is one of the most important issues, which still need to be tackled. As a contribution in this field, Souza et al, in their paper 9 Privacy-ensuring electronic health records on the cloud, present a solid access control framework in the context of Electronic Health Records (EHRs). This framework encompasses hybrid cryptography at the client side and an authentication technique to guarantee a secure key management protocol. They use the homomorphic and order-preserving encryption as a viable solution for the computation of regular searches over EHRs in the cloud, while preserving data confidentiality and patients' privacy. Furthermore, they introduce a trusted element, in the form of a browser extension that can prevent attacks from malicious providers. An HER-based prototype was developed to show the usefulness of the proposed framework. | Cloud computing applications and big dataThe | CONCLUSIONSThe papers presented in this special issue provide research works related to recent advances in cloud computing and big data. In particular, these research works focus on different topics including resources optimization, privacy and security, mobile cloud, cloud computing, and big data applications and services. We hope that the readers of this special issue will benefit from the research ideas and concepts presented in these research works.

Performance evaluation of linked stream data processing engines for situational awareness applications

“…Furthermore, recent studies put more emphasis on the role of remote data storage and processing in the Cloud infrastructures. They showed that, as also stated by Digital Communications Inc (DCI), techniques for remotely processing data are required as data have started to be migrated and managed in the cloud, or even will pass, at some point, through the cloud …”

A new fuzzy‐based method for load balancing in the cloud‐based Internet of things using a grey wolf optimization algorithm

“…Cloud computing uses virtualization to prepare services for users that different operating systems can be run on one computer based on the virtualization to increase resource efficiency . In cloud computing, we can alter a physical host to multiple virtual hosts using virtualization technology, and this host can be used as a primary computing unit …”

“…10,11 In cloud computing, we can alter a physical host to multiple virtual hosts using virtualization technology, and this host can be used as a primary computing unit. 12 On the other hand, the concept of Internet of things (IoT) is connecting various devices through the Internet. 13,14 IoT offers many types of application services in different domains, such as smart substructure, health care facilities, intelligent transportation system, etc.…”

Cloud computing and big data: Technologies and applications

“…In cloud computing environments, users can use anytime a variety of devices like PCs, laptops, smart phones, and PDAs to access programs, storage, and application‐development platforms using services offered by cloud computing providers. In fact, users can benefit from the high availability, easy scalability, and low costs in using cloud computing resources (ie, software, infrastructure, and platform) . For instance, cloud computing offers a collection of IT services referred to as Software‐as‐a‐Service to allow users remotely performing their applications.…”

“…Furthermore, various efforts have been recently dedicated to improve the performances of all services offered by cloud computing environments. However, there are still many issues that need to be tackled, mainly, scalability, availability, security, and privacy . Despite these issues, cloud computing will remain an environment that continues to play a considerable role in many existing and emerging application domains …”