Results 41 to 50 of about 14,151 (151)

Joint source-channel coding with feedback [PDF]

, 2017
This paper quantifies the fundamental limits of variable-length transmission of a general (possibly analog) source over a memoryless channel with noiseless feedback, under a distortion constraint.
Kostina, Victoria, Polyanskiy, Yury, Verdú, Sergio   +2 more
core   +2 more sources

Subglacial Conditions From Converted‐Wave Seismic Reflection Amplitudes: Synthetic Experiments and Case Study Reveal a Frozen Bed at an Antarctic Ice Rise

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 12, December 2025.
Abstract Estimating the seismic reflectivity of the glacial ice‐bed interface is a powerful means to quantify subglacial properties, which is important for parameterizing sliding laws in ice sheet models and understanding ice sheet history. Amplitude‐versus‐angle (AVA) analysis measures reflectivity with incidence angle and is sensitive to the ...
Ronan S. Agnew, Adam D. Booth, Alex M. Brisbourne, Roger A. Clark, Philip W. Livermore, Andrew M. Smith   +5 more
wiley   +1 more source

Rendering Fine Tactile Feedback With a Novel Hydraulic Actuation Method for Wearable Haptic Devices

IEEE Access
Tiny contact transients prove very informative for dexterous, fine manipulation, both in virtual environments and teleoperation. Yet, it is challenging to obtain such quality of the rendering in compact and highly wearable haptic devices.
Daniele Leonardis, Domenico Chiaradia, Giancarlo Santamato, Cristian Camardella, Antonio Frisoli   +4 more
doaj   +1 more source

Spherical Path Regression Through Universal Differential Equations With Applications to Paleomagnetism

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Directional data analysis plays a central role in paleomagnetism, where observations lie on a spherical surface. Existing methods for analyzing directional data often fail to incorporate prior physical knowledge about plate geodynamics, significantly constraining their potential.
F. Sapienza, L. C. Gallo, J. Bolibar, F. Pérez, J. Taylor   +4 more
wiley   +1 more source

Affective Stroking: Design Thermal Mid-Air Tactile for Assisting People in Stress Regulation

Applied Sciences
Haptics for stress regulation is well developed these years. Using vibrotactile to present biofeedback, guiding breathing or heartbeat regulation is a dominant technical approach. However, designing computer-mediated affective touch for stress regulation
Sheng He, Hao Zeng, Mengru Xue, Guanghui Huang, Cheng Yao, Fangtian Ying   +5 more
doaj   +1 more source

An Achievable Rate Region for the Broadcast Channel with Feedback

, 2013
A single-letter achievable rate region is proposed for the two-receiver discrete memoryless broadcast channel with generalized feedback. The coding strategy involves block-Markov superposition coding, using Marton's coding scheme for the broadcast ...
Pradhan, S. Sandeep, Venkataramanan, Ramji   +1 more
core   +1 more source

Key agreement over an interference channel with noiseless feedback: Achievable region & distributed allocation [PDF]

2015 IEEE Conference on Communications and Network Security (CNS), 2015
Secret key establishment leveraging the physical layer as a source of common randomness has been investigated in a range of settings. We investigate the problem of establishing, in an information-theoretic sense, a secret key between a user and a base-station (BS) (more generally, part of a wireless infrastructure), but for two such user-BS pairs ...
Salimi, Somayeh, Jorswieck, Eduard A., Skoglund, Mikael, Papadimitratos, Panos   +3 more
openaire   +2 more sources

Chirality‐driven all‐optical image differentiation

Nanophotonics, Volume 14, Issue 27, Page 5449-5464, December 2025.
Abstract Optical analog computing enables powerful functionalities, including spatial differentiation, image processing, and ultrafast linear operations. Yet, most existing approaches rely on resonant or periodic structures, whose performance is strongly wavelength‐dependent, imposing bandwidth limitations and demanding stringent fabrication tolerances.
Stefanos Fr. Koufidis, Zeki Hayran, Francesco Monticone, John B. Pendry, Martin W. McCall   +4 more
wiley   +1 more source

Extracting gradients from community data with multiple stressors and empty plots: A case study and simulations

Ecosphere, Volume 16, Issue 10, October 2025.
Abstract Ecological community data are used to infer levels of environmental stressors; for example, epiphytic lichen communities can be used to estimate levels of air pollutants. If stressors are so severe that the community of interest disappears altogether, then “empty” plots are recorded.
Adrienne Kovasi, Bruce McCune, Sarah Jovan   +2 more
wiley   +1 more source

Stabilization of Linear Systems Over Gaussian Networks [PDF]

, 2013
The problem of remotely stabilizing a noisy linear time invariant plant over a Gaussian relay network is addressed. The network is comprised of a sensor node, a group of relay nodes and a remote controller.
Ali A. Zaidi, Mikael Skoglund, Senior Member, Serdar Yüksel, Tobias J. Oechtering   +4 more
core   +1 more source