Results 81 to 90 of about 15,242 (220)

Modelling of a captive unmanned aerial system teledetecting oil pollution on sea surface

, 2012
Recent major oil-spills were tracked using observations with sufficient altitudes over the sea surface, to detect oil slick locations. For oil-spill responders, we propose a captive Unmanned Aerial System, UAS acting like a periscope over a ship or ...
Muttin, Frédéric
core   +1 more source

Tokyo Axion Helioscope

, 2008
A new search result of the Tokyo axion helioscope is presented. The axion helioscope consists of a dedicated cryogen-free 4T superconducting magnet with an effective length of 2.3 m and PIN photodiodes as x-ray detectors. Solar axions, if exist, would be
Akimoto, Y., Inoue, Y., Minowa, M., Mizumoto, T., Ohta, R., Yamamoto, A.   +5 more
core   +1 more source

Adaptive Sliding Mode Path Tracking Control for an Underactuated Unmanned Surface Vehicle Based on a Disturbance Observer

IET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This paper proposes a composite control strategy combining a disturbance observer (DOB) and an adaptive sliding‐mode controller (ASMC) to enhance the path‐tracking performance of underactuated unmanned surface vehicles. The DOB actively compensates for environmental disturbances while the ASMC handles model uncertainties, with simulations demonstrating
Li Yang, Bao Changchun
wiley   +1 more source

Multi-vessel target tracking with camera fusion for unmanned surface vehicles

International Journal of Naval Architecture and Ocean Engineering
With the decreasing availability of sailors, there has been an increasing focus on the development of autonomous ships. Among the various components of autonomous ships, automatic recognition systems that can replace human vision are a crucial area of ...
Jeong-Ho Park, Myung-Il Roh, Hye-Won Lee, Yeong-Min Jo, Jisang Ha, Nam-Sun Son   +5 more
doaj   +1 more source

Disturbance-Observer-Based Sliding Mode Control Design for Nonlinear Unmanned Surface Vessel With Uncertainties

IEEE Access, 2019
Unmanned surface vessel (USV) has been widely applied due to its advantages in the maritime security inspection and resources exploration. Good trajectory tracking performance is a critical issue in the control design of USV.
Zheng Chen, Yougong Zhang, Youming Zhang, Yong Nie, Jianzhong Tang, Shiqiang Zhu   +5 more
doaj   +1 more source

Evaluation of Fungal Metabolic Compounds Released to the Air in a Restricted Environment [PDF]

, 1991
The metabolic action of selected fungi species on common components of the interior of Space Station Freedom (SSF) will be tested. When present, volatile organic chemicals will be collected on porous polymer adsorbent columns.
Ferebee, Robert N.
core   +1 more source

Underwater Wireless Power Transfer for Unmanned Systems: State‐of‐the‐Art Review

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This comprehensive review presents the state‐of‐the‐art in underwater wireless power transfer (UWPT) systems, focusing on magnetic field‐coupled or inductive power transfer (IPT) technologies for underwater unmanned equipment. ABSTRACT Underwater wireless power transfer (UWPT) systems are finding increasing use in underwater unmanned equipment, among ...
Shiqi Li, Shaochun Hou, Huan Wu, Bo Luo
wiley   +1 more source

Mobile Microgrids: Concepts, Key Technologies, Business Models, Applications and Prospects

IET Smart Grid, Volume 9, Issue 1, January/December 2026.
Our study explores MMG concepts, key technologies, business models and applications, illustrating their impact on improving the flexible ADN operation. This study emphasises not only the practical importance of MMGs but also their pivotal role in reshaping the future landscape of energy delivery, offering valuable insights for researchers, policymakers
Tao Ding, Chenggang Mu, Yujie Ding, Shunqi Wang, Rui Song, Mohammad Shahidehpour   +5 more
wiley   +1 more source

How Robust is Eschrichtius robustus? A Novel Photographic Index of Body Condition From Boat‐Based Photographs of Gray Whales

Marine Mammal Science, Volume 42, Issue 1, January 2026.
ABSTRACT Although the eastern North Pacific gray whale (Eschrichtius robustus) population has recovered from population declines associated with whaling, they are closely monitored, especially in association with Unusual Mortality Events. Metrics to improve assessment of the health of individual animals, when averaged, are valuable to inform monitoring
Kira A. Telford, John Calambokidis, Kiirsten R. Flynn, Jasmine Witt, Alie Perez, John W. Durban, Holly Fearnbach, Erin L. Meyer‐Gutbrod   +7 more
wiley   +1 more source

Tokyo Axion Helioscope

, 2010
The idea of a magnetic axion helioscope was first proposed by Pierre Sikivie in 1983. Tokyo axion helioscope was built exploiting its detection principle with a dedicated cryogen-free superconducting magnet and PIN photodiodes for x-ray detectors.
Minowa, Makoto
core   +1 more source