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Does a multimodal educational intervention involving pre-intern 'hand hygiene covert observers' improve hand hygiene compliance among medical interns? [PDF]
Antimicrob Resist Infect ControlWong SC +8 more
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Jamming-Based Covert Communication for Rate-Splitting Multiple Access
IEEE Transactions on Vehicular Technology, 2023National Research Foundation (NRF)
Trung Thanh Nguyen 0004 +4 more
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Covert Rate Optimization of Millimeter Wave Full-Duplex Communications
IEEE Transactions on Wireless Communications, 2022In this paper, we consider the problem of full-duplex covert millimeter wave (mmWave) communications, where a mmWave transmitter (Alice) sends information signals to its intended receiver (Bob) covertly in the presence of a watchful warden (Willie). For covering the presence of Alice, Bob operates in the full-duplex mode and generates jamming signals ...
Chao Wang 0028 +2 more
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Evaluating the transmission rate of covert timing channels in a network
Computer Networks, 2011Network covert channel is an illegal communication mechanism, which can be used by attackers to steal information from compromised systems. The channel brings serious security threat, which is usually measured by the information transmission rate achieved in the channel.
Xiaochao Zi +4 more
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Modeling packet rate covert timing channels
2013 9th International Conference on Innovations in Information Technology (IIT), 2013Covert channels provide a medium for secret communication by exploiting caveats in common networking protocols to hide information exchanges within benign activities, without being detected by unsuspecting hosts and network firewalls. This makes covert channels a significant security concern.
P. L. Shrestha +3 more
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Heart-Rate Changes during Covert Rehearsal and Response Execution
Perceptual and Motor Skills, 1980The phasic cardiac responses and reaction times (RT) of 27 normal adult males were examined during a fixed-foreperiod RT task involving three levels of difficulty of rehearsal, with subject instructed to respond to the reaction signal following one of three delay periods.
S S, Dennis, R F, Mulcahy
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Covert Rate Maximization in Wireless Full-Duplex Relaying Systems With Power Control
IEEE Transactions on Communications, 2021This paper investigates the fundamental covert rate performance in a wireless relaying system consisting of a source-destination pair, a full-duplex (FD) relay and a warden, where the relay can work at either the FD mode or the half-duplex (HD) mode. We first provide theoretical modeling for the instantaneous/average covert rate when the system works ...
Sun, Ranran +5 more
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Rate vs. Covertness for the Packet Insertion Problem
2018 IEEE International Conference on the Science of Electrical Engineering in Israel (ICSEE), 2018The goal of covert communication is to establish a communication link between two parties (Alice and Bob) while assuring that a warden (Willie) will not be able to detect the very presence of communication. In this work, we address the covert communication problem over a packet insertion channel.
Tsvi G. Dvorkind, Asaf Cohen
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Covert communication with the help of an uninformed jammer achieves positive rate
2015 49th Asilomar Conference on Signals, Systems and Computers, 2015Recent work has established that when transmitter Alice wishes to communicate reliably to recipient Bob without detection by warden Willie, with additive white Gaussian noise (AWGN) channels between all parties, communication is limited to O(√n) bits in n channel uses.
Tamara V. Sobers +4 more
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