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Extensive Study of Cloud Computing Technologies, Threats and Solutions Prospective

Computer Systems Science & Engineering 2022年第4期41卷 225-240页

作者： mwaffaq abu-alhaija Nidal M.Turab AbdelRahman Hamza Department of Networks and Information Security Faculty of Information TechnologyAl-Ahliyya Amman UniversityAmman19328Jordan Department of Computer Science Information TechnologyAl-Ahliyya Amman UniversityAmman19328Jordan

Infrastructure as a Service(IaaS)provides logical separation between data,network,applications and machines from the physical constrains of real *** is one of the basis of cloud ***,security issues are also gradually emerging with virtualization of cloud *** security aspects of cloud virtualization will be explored in this research paper,security recognizing potential threats or attacks that exploit these vulnerabilities,and what security measures are used to alleviate such *** addition,a dis-cussion of general security requirements and the existing security schemes is also *** shown in this paper,different components of virtualization environ-ment are targets to various attacks that in turn leads to security issues compromis-ing the whole cloud *** this paper an overview of various cloud security aspects is also *** attack scenarios of virtualization envir-onments and security solutions to cater these attacks have been discussed in the *** then proceed to discuss API security concerns,data security,hijacking of user account and other security *** aforementioned discussions can be used in the future to propose assessment criteria,which could be useful in ana-lyzing the efﬁciency of security solutions of virtualization environment in the face of various virtual environment attacks.

关键词： Cloud computing environment paravirtualization full virtualization cloud virtualization security hypervisor virtual machines

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Recent Techniques for Harvesting Energy from the Human Body

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Computer Systems Science & Engineering 2022年第1期40卷 167-177页

作者： Nidal M.Turab Hamza abu Owida Jamal I.Al-Nabulsi mwaffaq abu-alhaija Department of Networks and Information Security Faculty of Information TechnologyAl-Ahliyya Amman UniversityAmman19328Jordan Medical Engineering Department Faculty of EngineeringAl-Ahliyya Amman UniversityAmman19328Jordan

The human body contains a near-infinite supply of energy in chemical,thermal,and mechanical ***,the majority of implantable and wear-able devices are still operated by batteries,whose insufficient capacity and large size limit their lifespan and increase the risk of hazardous material *** energy can be used to exceed the battery power limits of implantable and wear-able ***,novel materials and fabrication methods can be used to create various medical therapies and life-enhancing *** review paper focuses on energy-harvesting technologies used in medical and health applications,primarily power collectors from the human *** approaches to energy harvesting from the bodies of living subjects for self-powered electronics are *** the human body as an energy source encompasses numer-ous topics:thermoelectric generators,power harvesting by kinetic energy,cardi-ovascular energy harvesting,and blood *** review considers various perspectives on future research,which can provide a new forum for advancing new technologies for the diagnosis,treatment,and prevention of diseases by integrating different energy harvesters with advanced electronics.

关键词： Harvesters implantable medical devices thermoelectric generators cardiovascular systems human motion harvesters

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Survey and Analysis of VoIP Frame Aggregation Methods over A-MSDU IEEE 802.11n Wireless Networks

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Computers, Materials & Continua 2021年第2期66卷 1283-1300页

作者： Mosleh M.abualhaj Abdelrahman H.Hussein Manjur Kolhar mwaffaq abu AlHija Al-Ahliyya Amman University AmmanJordan Prince Sattam Bin Abdulaziz University Al-KharjSaudi Arabi

The IEEE 802.11n standard has provided prominent features that greatly contribute to ubiquitous wireless *** the last ten years,voice over IP(VoIP)has become widespread around the globe owing to its low-cost or even free call *** combination of these technologies(VoIP and wireless)has become desirable and inevitable for ***,VoIP faces a bandwidth utilization issue when working with 802.11 wireless *** bandwidth utilization is inefficient on the grounds that(i)80 bytes of 802.11/RTP/UDP/IP header is appended to 10–730 bytes of VoIP payload and(ii)765μs waiting intervals follow each 802.11 VoIP *** considering the quality requirements of a VoIP call,be including frame aggregation in the IEEE 802.11n standard has been suggested as a solution for the bandwidth utilization ***,several aggregation methods have been proposed to handle the quality requirements of VoIP calls when carried over an IEEE 802.11n wireless *** this survey,we analyze the existing aggregation methods of VoIP over the A-MSDU IEEE 802.11n wireless *** survey provides researchers with a detailed analysis of the bandwidth utilization issue concerning the A-MSDU 802.11n standard,discussion of the main approaches of frame aggregation methods and existing aggregation methods,elaboration of the impact of frame aggregation methods on network performance and VoIP call quality,and suggestion of new areas to be investigated in conjunction with frame *** survey contributes by offering guidelines to design an appropriate,reliable,and robust aggregation method of VoIP over 802.11n standard.

关键词： VoIP VoIP frame aggregation IEEE 802.11n bandwidth utilization A-MSDU A-MPDU

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