Coronaviruses are a famous family of viruses that cause illness in both humans and animals. The new type of coronavirus COVID-19 was firstly discovered in Wuhan, China. However, recently, the virus has widely spread in most of the world and causing a pandemic according to the World Health Organization (WHO). Further, nowadays, all the world countries are striving to control the COVID-19. There are many mechanisms to detect coronavirus including clinical analysis of chest CT scan images and blood test results. The confirmed COVID-19 patient manifests as fever, tiredness, and dry cough. Particularly, several techniques can be used to detect the initial results of the virus such as medical detection Kits. However, such devices are incurring huge cost, taking time to install them and use. Therefore, in this paper, a new framework is proposed to detect COVID-19 using built-in smartphone sensors. The proposal provides a low-cost solution, since most of radiologists have already held smartphones for different dailypurposes. Not only that but also ordinary people can use the framework on their smartphones for the virus detection purposes. Today's smartphones are powerful with existing computationrich processors, memory space, and large number of sensors including cameras, microphone, temperature sensor, inertial sensors, proximity, colour-sensor, humidity-sensor, and wireless chipsets/sensors. The designed Artificial Intelligence (AI) enabled framework reads the smartphone sensors' signal measurements to predict the grade of severity of the pneumonia as well as predicting the result of the disease.

The rapid growth of Internet-of-Things (IoT) in the current decade has led to the development of a multitude of new access technologies targeted at low-power, wide area networks (LP-WANs). However, this has also created another challenge pertaining to technology selection. This paper reviews the performance of LP-WAN technologies for IoT, including design choices and their implications. We consider Sigfox, LoRaWAN, WavIoT, random phase multiple access (RPMA), narrow band IoT (NB-IoT) as well as LTE-M and assess their performance in terms of signal propagation, coverage and energy conservation. The comparative analyses presented in this paper are based on available data sheets and simulation results. A sensitivity analysis is also conducted to evaluate network performance in response to variations in system design parameters. Results show that each of RPMA, NB-IoT and LTE-M incurs at least 9 dB additional path loss relative to Sigfox and LoRaWAN. This study further reveals that with a 10% improvement in receiver sensitivity, NB-IoT 882 MHz and LoRaWAN can increase coverage by up to 398% and 142% respectively, without adverse effects on the energy requirements. Finally, extreme weather conditions can significantly reduce the active network life of LP-WANs. In particular, the results indicate that operating an IoT device in a temperature of-20 • C can shorten its life by about half; 53% (WavIoT, LoRaWAN, Sigfox, NB-IoT, RPMA) and 48% in LTE-M compared with environmental temperature of 40 • C.

Item Type Article Authors Ghafir, Ibrahim; Hammoudeh, M.; Prenosil, V.; Han, L.; Hegarty, R.; Rabie, K.; Aparicio-Navarro, F.J. Citation Ghafir I, Hammoudeh M, Prenosil V (et al) Detection of advanced persistent threat using machine-learning correlation analysis. Future Generation Computer Systems. 89: 349-359. Rights Citation: Ghafir I, Hammoudeh M, Prenosil V (et al) Detection of advanced persistent threat using machine-learning correlation analysis. Future Generation Computer Systems. 89: 349-359. AbstractAs one of the most serious types of cyber attack, Advanced Persistent Threats (APT) have caused major concerns on a global scale. APT refers to a persistent, multi-stage attack with the intention to compromise the system and gain information from the targeted system, which has the potential to cause significant damage and substantial financial loss. The accurate detection and prediction of APT is an ongoing challenge. This work proposes a novel machine learning-based system entitled MLAPT, which can accurately and rapidly detect and predict APT attacks in a systematic way. The MLAPT runs through three main phases: (1) Threat detection, in which eight methods have been developed to detect different techniques used during the various APT steps. The implementation and validation of these methods with real traffic is a significant contribution to the current body of research; (2) Alert correlation, in which a correlation framework is designed to link the outputs of the detection methods, aims to identify alerts that could be related and belong to a single APT scenario; and (3) Attack prediction, in which a machine learning-based prediction module is proposed based on the correlation framework output, to be used by the network security team to determine the probability of the early alerts to develop a complete APT attack. MLAPT is experimentally evaluated and the presented system is able to predict APT in its early steps with a prediction accuracy of 84.8%.to a technical report by Trend Micro [11], this assumption is no longer valid with the rise of targeted attacks, Advanced Persistent Threats (APTs), in which both cyber-criminals and hackers are targeting selected organizations and persisting until they achieve their goals.The APT attack is a persistent, targeted attack on a specific organisation 20 and is performed through several steps [12]. The main aim of APT is espionage and then data exfiltration. Therefore, APT is considered as a new and more complex version of multi-step attack. These APTs present a challenge for current detection methods as they use advanced techniques and make use of unknown vulnerabilities. Moreover, the economic damage due to a successful 25 APT attack significant. The potential cost of attacks is the major motivation for the investments in intrusion detection and prevention systems [13]. APTs are currently one of the most serious threats to companies and governments [14].Most of the research in the area of APT detection, has focused on analysing already identified APTs [15][16][17][...

In this paper we analyze the secrecy capacity of a halfduplex energy harvesting (EH)-based multi-antenna amplify-andforward (AF) relay network in the presence of a passive eavesdropper. During the first phase, while the source is in transmission mode, the legitimate destination transmits an auxiliary artificial noise (AN) signal which has here two distinct purposes, a) to transfer power to the relay b) to improve system security. Since the AN is known at the legitimate destination, it is easily canceled at the intended destination which is not the case at the eavesdropper. In this respect, we derive new exact analytical expressions for the ergodic secrecy capacity for various well-known EH relaying protocols, namely, time switching relaying (TSR), power splitting relaying (PSR) and ideal relaying receiver (IRR). Monte Carlo simulations are also provided throughout our investigations to validate the analysis. The impacts of some important system parameters such as EH time, power splitting ratio, relay location, AN power, EH efficiency and the number of relay antennas, on the system performance are investigated. The results reveal that the PSR protocol generally outperforms the TSR approach in terms of the secrecy capacity.Index Terms-Amplify-and-forward relays, cooperative communications, energy harvesting, secrecy capacity, wireless power transfer. Abdelhamid Salem (S'12), received the B.Sc. degree in Electrical and Electronic Engineering from the University of Benghazi, Benghazi, Libya, in 2002 and the M.Sc. degree (with distinction) in Communication Engineering from the University of Benghazi, Benghazi, Libya, in 2009, he is currently working toward the Ph.D. degree in wireless communications with The University of Manchester, United Kingdom . His current research interests include Physical Layer Security, signal processing for interference mitigation, energy harvesting, wireless power transfer, MIMO systems, wireless optical communication systems and power line communications. Khairi Ashour Hamdi (M'99-SM'02) received the B.Sc. degree in electrical engineering from the Alfateh University, Tripoli, Libya, in 1981, the M.Sc. degree (with distinction) from the Technical University of Budapest, Budapest, Hungary, in 1988, and the Ph.D. degree in telecommunication engineering in 1993, awarded by the Hungarian Academy of Sciences. His current research interests include modelling and performance analysis of wireless communication systems and networks.

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