Results 51 to 60 of about 2,722 (251)
Behavioral Mimicry Covert Communication [PDF]
, 2012 In this paper, the use of structural behavior of communication protocols (e.g., CSMA) in designing new covert channels is investigated. In this way, the covert transmitter adopts the communication protocol architecture to control its overt traffic flow yet with different parameters that give it enough freedom to embed the covert message in its overt ...
Seyed Ali Ahmadzadeh, Gordon B. Agnew
openaire +1 more source
Advanced Manufacturing of Composite‐Based Systems for Energy Applications
Advanced Materials Technologies, EarlyView.Advanced manufacturing enables the integration of polymers, ceramics, metal oxides, and composites into architected microstructures with tailored transport pathways. By coupling material selection, manufacturing strategy, and structural design, multifunctional energy systems can simultaneously improve electrochemical performance, thermal management ...
Sri Vaishnavi Thummalapalli +13 more
wiley +1 more source
USBcat - Towards an Intrusion Surveillance Toolset [PDF]
Electronic Proceedings in Theoretical Computer Science, 2014 This paper identifies an intrusion surveillance framework which provides an analyst with the ability to investigate and monitor cyber-attacks in a covert manner.
Chris Chapman, Scott Knight, Tom Dean
doaj +1 more source
Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications
Advanced Materials Technologies, EarlyView.Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja +9 more
wiley +1 more source
Flexible Tactile Actuator Arrays With Integrated Electroosmotic Pumps for Wearable Haptic Systems
Advanced Materials Technologies, EarlyView.1 ×$\times$ 9 and 4 ×$\times$ 4 flexible tactile actuator arrays integrating electroosmotic pumps are developed to deliver pressure and vibration feedback on wearable platforms. Their thin, compliant structure conforms seamlessly to curved body surfaces, providing intimate contact and enhanced haptic sensations.
Heejin Yu, Joonbum Bae
wiley +1 more source
Covert Multi-Access Communication with a Non-Covert User
ICC 2024 - IEEE International Conference on CommunicationsIn this paper, we characterize the fundamental limits of a communication system with three users (i.e., three transmitters) and a single receiver where communication from two covert users must remain undetectable to an external warden. Our results show a tradeoff between the highest rates that are simultaneously achievable for the three users.
Abdelaziz Bounhar +2 more
openaire +2 more sources
WS2 Micro‐Dome Single Photon Source in a Tunable Open Cavity
Advanced Optical Materials, EarlyView.In this work, a single‐photon source based on WS2 micro‐domes is realized and integrated into an open, tunable optical microcavity. Single‐photon emission from the coupled emitter–cavity system is observed. Detailed analysis shows that a pronounced acoustic phonon emission sideband contributes specifically to the non‐resonant emitter–cavity coupling in
Jens‐Christian Drawer +15 more
wiley +1 more source
Covert communications in a downlink time division multiple access system
Scientific ReportsIn this paper, we investigate covert communications in a downlink time division multiple access system. While transmitting public messages sequentially to multiple users, the source node concurrently embeds covert messages intended for a covert receiver.
Jihwan Moon, Taehoon Kim, Inkyu Bang
doaj +1 more source
Two‐Dimensional Isotropic Spatial Differentiation Through Complete Polarization Control
Advanced Optical Materials, EarlyView.This work enables two‐dimensional isotropic spatial differentiation at planar interfaces over a wide range of incident angles by extending the output polarization from linear to elliptical. The choice of incident angle can be used to balance broader spectral response at low angles and higher edge‐detection efficiency at larger angles.
Doyoon Lee, Minkyung Kim
wiley +1 more source
Deterministic Transferable Planar Dielectric Mirrors for Investigating Strong Light–Matter Coupling
Advanced Optical Materials, EarlyView.Transferable dielectric distributed Bragg reflectors enable the deterministic assembly of high‐quality planar microcavities while maintaining the intrinsic properties of quantum materials during fabrication. The resulting structures exhibit robust exciton‐photon coupling in monolayer WS2${\rm WS}_{2}$ from cryogenic to room temperature, establishing a ...
Atanu Patra +4 more
wiley +1 more source