Results 51 to 60 of about 769,052 (322)

The Use of Multi-beam Sonars to Image Bubbly Ship Wakes [PDF]

, 2005
During the past five years, researchers at Penn State University (PSU) have used upward-looking multi-beam (MB) sonar to image the bubbly wakes of surface ships.
Bradley, David L, Culver, R Lee, Weber, Thomas C.   +2 more
core   +1 more source

Ferroelectric Tunnel Junction Memristor Crossbar Array with Annealing Optimization for In‐Memory Computing

Advanced Intelligent Systems, EarlyView.
A 48 × 48 ferroelectric tunnel junction (FTJ) crossbar array is fabricated and optimized through postmetallization annealing, enabling stable polarization switching and reliable multilevel conductance programming. Half‐bias operation, accurate vector–matrix multiplication with less than 1% error, and CIFAR‐10 image classification with near‐software ...
Sangwook Youn, Hwiho Hwang, Hyungjin Kim
wiley   +1 more source

A PREALIMINARY STUDY OF SHIP DETECTION FROM UAV IMAGES BASED ON COLOR SPACE CONVERSION AND IMAGE SEGMENTATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Ship detection is an inherent process supporting tasks such as fishery management, ship search, marine traffic monitoring and control, and helps in the prevention of illegal activities.
A. M. Klimkowska, I. Lee
doaj   +1 more source

Tenecteplase Versus Alteplase for First‐Pass Reperfusion in Basilar Artery Occlusion Stroke Thrombectomy

Annals of Neurology, EarlyView.
Objective The first‐pass effect (FPE), defined as excellent reperfusion after a single attempt, is associated with improved outcomes in large vessel occlusion stroke. We evaluated whether intravenous tenecteplase (TNK) compared with alteplase (TPA) increases the likelihood of FPE in basilar artery occlusion (BAO).
Dylan N. Wolman, Rahul R. Karamchandani, Sina Hemmer, Tyler M. Bielinski, Nitin Goyal, Jeremy B. Rhoten, Mahesh V. Jayaraman, Christian T. Sidebottom, Bradley A. Gross, Alhamza R. Al‐Bayati, Mohamed F. Doheim, Matthew K. Tobin, Anoop Chinthala, Avi Gajjar, Justin Mascitelli, Matthew R. Webb, Jan‐Karl Burkhardt, Kyle W. Scott, Visish Srinivasan, Daniel Tonetti, Manisha Koneru, David J. Altschul, Dhrumhil Vaishnav, Sumeet Multani, Thana Theofanis, William J. Ares, Je Yeong Sone, Ramin Zand, Sasan Bahrami, Jiang Li, Gary Defilipp, Dale Strong, Radmehr Torabi, Krisztina Moldovan, Clemens M. Schirmer, Alexandra R. Paul, Bradley N. Bohnstedt, Raul G. Nogueira, Philipp Hendrix   +38 more
wiley   +1 more source

Ship Wake Detection in a Single SAR Image via a Modified Low-Rank Constraint

Remote Sensing
Ship wake detection stands as a pivotal task in marine environment monitoring. The main challenge in ship wake detection is to improve detection accuracy and mitigate false alarms. To address this challenge, a novel procedure for ship wake detection in a
Yanan Guan, Huaping Xu, Wei Li, Chunsheng Li   +3 more
doaj   +1 more source

Observation of surface wave patterns modified by sub-surface shear currents [PDF]

, 2019
We report experimental observations of two canonical surface wave patterns --- ship waves and ring waves --- skewed by sub-surface shear, thus confirming effects predicted by recent theory.
Ellingsen, Simen Å., Smeltzer, Benjamin K., Æsøy, Eirik   +2 more
core   +2 more sources

Ship Velocity Estimation From Ship Wakes Detected Using Convolutional Neural Networks [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
Accurately tracking marine traffic considering security and commercial activities is still challenging despite its increasing global importance. Recently, space-borne synthetic aperture radar (SAR) is being considered to accurately monitor maritime traffic, and techniques to detect the position of ships and estimate their velocity have become essential.
Ki-mook Kang, Duk-jin Kim
openaire   +2 more sources

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

Investigation of the rotor–obstacle aerodynamic interaction in hovering flight [PDF]

, 2018
In this paper, a comprehensive experimental survey of the aerodynamic interaction of a hovering rotor in the proximity of a ground obstacle is described, taking advantage of multiple experimental techniques.
Giuni, Michea, Green, Richard B., Zagaglia, Daniele   +2 more
core   +2 more sources

Toward Carbon Accounting and Circular Harmony in Shipping Corporations: A Systematic Bibliometric Review

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines how carbon accounting can be used to govern, not merely report, circular economy principles in shipping corporations. Grounded in institutional theory and aligned with the UN 2030 Agenda, this study introduces circular harmony as an accounting design principle: Circular interventions are embedded in a single well‐to‐wake ...
Assunta Di Vaio, Anum Zaffar, Marco Ferretti   +2 more
wiley   +1 more source