Results 71 to 80 of about 1,820,656 (215)

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, Volume 5, Issue 7, July 2026.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Assessment of the Potential for Territorial Development in the Coastal Regions of Qeshm Island, Iran

Engineering Reports, Volume 8, Issue 7, July 2026.
This graphical abstract illustrates coastal land use changes and development potential on Qeshm Island, Iran, highlighting erosion trends, declining natural habitats, and areas most suitable for sustainable coastal development, with Suza, Laft, and Shib‐e‐Deraz prioritized as optimal zones.
Majid Kia, Mohsen Dadras, Zeinab Aliyas
wiley   +1 more source

Modelling, Measurement and Correction of Underwater Turbulence Effects on Optical Communications

, 2021
4 S.We report on progress made in the last few years at Fraunhofer IOSB with regards to understanding the effects that underwater turbulence poses for laser-based communications and also with regards to design and implementation of efficient wavefront ...
Szymon Gladysz, Gladysz, Szymon, Montoya, Jose P., Osvaldo Javier Galicia Gasperin, Segel, Max, Jose Montoya, Toselli, Italo, Karin Stein, Stein, Karin, Gasperin, Osvaldo Javier Galicia, Max Segel, Italo Toselli   +11 more
core   +1 more source

Next-generation underwater localization: Artificial Intelligence-based and energy-aware approaches

Applied Ocean Research
Designing accurate, reliable, and energy-efficient localization techniques for underwater acoustic networks is highly challenging due to factors such as large propagation delays, the absence of Global Positioning System (GPS), node mobility, and limited ...
Mainul Islam Chowdhury, Quoc Viet Phung, Iftekhar Ahmed, Walid K. Hasan, Daryoush Habibi   +4 more
doaj   +1 more source

Shallow Water Experiment of OFDM Underwater Acoustic Communications

Archives of Acoustics, 2020
The large variability of communication properties of underwater acoustic channels, and especially the strongly varying instantaneous conditions in shallow waters, is a challenge for the designers of underwater acoustic communication (UAC) systems.
Iwona KOCHAŃSKA, Jan H. SCHMIDT, Jacek MARSZAL   +2 more
doaj   +1 more source

Tributary‐scale oyster reef restoration in Harris Creek, Maryland: lessons from a decade of planning, implementing, and monitoring

Restoration Ecology, Volume 34, Issue 5, July 2026.
Abstract Introduction In response to the decline of eastern oyster (Crassostrea virginica) populations in Chesapeake Bay, a large‐scale restoration initiative was launched in Harris Creek, Maryland, in 2011. This effort marked a shift from fragmented projects toward a coordinated, sanctuary‐based approach to oyster restoration.
Stephanie R. Westby, Steve Allen, Jodi Dew‐Baxter, David Bruce, Olivia N. Caretti, Jay Lazar, Jennica Moffat, Laurinda Serafin, Ward Slacum, Angela Sowers, Eric Weissberger   +10 more
wiley   +1 more source

A multipath fading channel model for underwater shallow acoustic communications

, 2012
In these last years, many studies have focalized on the design of reliable under water acoustic communication systems. However, the ocean acoustic communication channel exhibits strong amplitude and phase fluctuations and the phenomena of diffraction ...
F. Veltri, Fazio P., P. Fazio, De Rango F., Veltri F., F. De Rango   +5 more
core   +1 more source

Modified Green's Functions for Shallow Water Acoustic Wave Propagation [PDF]

, 2004
This article presents an assessment of alternative forms of the Green’s function for boundary element simulations of acoustic wave propagation in shallow water. It is assumed that the problem is two-dimensional, the source of acoustic disturbance is time-
Santiago, J A F S, Wrobel, L C
core   +1 more source

Integrating Acoustic Communications with Underwater Autonomy

, 2022
Electronic Thesis or DissertationDue to the properties of the underwater environment, the most reliable form of long-distance communication utilized by autonomous underwater vehicles is acoustic communications.
Webb, Connor L
core   +1 more source

Environmental Model-Based Time-Reversal Underwater Communications

IEEE Access, 2018
This paper addresses channel compensation in underwater acoustic communications by proposing a method for inserting physical propagation modeling into a passive time-reversal (PTR) receiver.
Lussac P. Maia, Antonio Silva, Sergio M. Jesus   +2 more
doaj   +1 more source