Critical software systems face stringent requirements in safety, security and reliability due to the circumstances surrounding their operation. Safety and security have progressively gained importance over the years due to the integration of hardware with software-intensive deployments that introduce additional sources of errors. It is, then, necessary to follow high-quality exhaustive software development processes that ...

The advent of the digital age has led to a rise in different types of data with every passing day. In fact, it is expected that half of the total data will be on the cloud by 2016. This data is complex and needs to be stored, processed and analyzed for information that can be ...

Cloud computing is revolutionizing the way software services are procured and used by government organizations and SMEs. Quantitative risk assessment of cloud services is complex and undermined by specific security concerns regarding data confidentiality, integrity and availability. This paper explores how the gap between the quantitative risk assessment and the perception of the risk can ...

As network size continues to grow exponentially, there has been a proportionate increase in the number of nodes in the corresponding network. With the advent of Internet of Things (IOTs), it is assumed that many more devices will be connected to the existing network infrastructure. As a result, monitoring is expected to get more complex ...

The raise of mobility has make more needs for wireless connectivity and bandwidth. As years passes wireless networks were rapidly improved, introducing new applications and services, as well as important challenges for mobility support. This research field is new with many researchers and scientists making their proposals to optimize the provision of multiple services to ...

In two-tiered Wireless Sensor Networks (WSNs) relay node placement is one of the key factors impacting the network energy consumption and the system overhead. In this paper, a novel connectivity-aware approximation algorithm for relay node placement in WSNs is proposed to offer a major step forward in saving system overhead. Specifically, a unique Local Search ...

Due to the current trend towards smaller cells, an increasing number of users of cellular networks reside at the edge between two cells; these users typically receive poor service as a result of the relatively weak signal and strong interference. Coordinated Multi-Point (CoMP) with Joint Transmission (JT) is a cellular networking technique allowing multiple Base ...

Today’s cellular telecommunications markets require continuous monitoring and intervention by regulators in order to balance the interests of various stakeholders. In order to reduce the extent of regulatory involvements in the day-to-day business of cellular operators, the present paper proposes a “Self-regulating” spectrum market regime named “Society spectrum”. This regime provides a market-inherent and automatic ...

Mobile phones and smartphones have evolved to be very powerful devices that have the potential to be utilized in many application areas apart from generic communication. With each passing year, users see increasingly powerful smartphones being manufactured, which have a plethora of powerful embedded sensors like microphone, camera, digital compass, GPS (Global Positioning System), accelerometer, ...

The increasing demand of data, along with the spectrum scarcity, is motivating a urgent shift towards exploiting new bands. This is the main reason behind identifying mmWaves as the key disruptive enabling technology for 5G cellular networks. Indeed, utilizing new bands means facing new challenges; in this context, they are mainly related to the radio ...