Results 81 to 90 of about 769,052 (322)

Synthetic aperture radar images of ocean waves, theories of imaging physics and experimental tests [PDF]

open access: yes, 1984
The physical mechanism for the synthetic Aperture Radar (SAR) imaging of ocean waves is investigated through the use of analytical models. The models are tested by comparison with data sets from the SEASAT mission and airborne SAR's.
Durden, S. L.   +3 more
core   +1 more source

Haunting the Historiography of Slaves in South Asia from the nineteenth century to the present

open access: yesGender &History, EarlyView.
ABSTRACT Using both English and Urdu‐language records, this article traces the career of a few African and Afro‐Asian women slaves in the household‐state of Awadh during the first half of the nineteenth century. Focusing on the same records, this article compares a master‐poet's recognition of the motherhood of the African and Afro‐Asian slaves to the ...
Indrani Chatterjee
wiley   +1 more source

Automatic Ship Recognition Chain on Satellite Multispectral Imagery

open access: yesIEEE Access, 2020
This article elaborates a processing chain devised to recognize the ships existing on medium resolution multispectral imageries (MSI). The chain consists of the following three steps. Firstly, an adaptive local saliency mapping technique is instigated on
Kamirul Kamirul   +3 more
doaj   +1 more source

Wake Distribution of Ship and Model on Full Ship Form

open access: yesJournal of the Society of Naval Architects of Japan, 1973
In order to investigate the wake distribution of full ships, the measurements of the flow around the sterns of a ship and its model were carried out with five-hole pitot tubes. On the ship, a 200, 000 D. W. T. tanker, the measured section was situated at about 4. 5% of Lpp forward from A.
Masaaki Namimatsu   +3 more
openaire   +2 more sources

A ‘Wholly Unjustifiable Treatment of British Subject’? The Detention of W. T. Goode in the Baltic, 1919

open access: yesHistory, EarlyView.
Abstract In the summer of 1919, W. T. Goode, the Manchester Guardian’s special correspondent in Russia and the Baltic, was arrested in the Estonian capital Tallinn and briefly detained aboard a British warship. Goode's detention caused a furore, leading to accusations of kidnap, heated commentary in the press and questions in parliament.
Colin Storer
wiley   +1 more source

Winston Churchill and France: A Certain Ideal

open access: yesHistory, EarlyView.
Abstract This article examines relations between Winston Churchill and France. It argues that Churchill was sympathetic to France and, in particular, unusual among Englishmen of his generation in being sympathetic to its political system, but also that this sympathy did not make Churchill consistent in his relations with France.
Richard Vinen
wiley   +1 more source

Churchill and Germany: A ‘Special’ Relationship

open access: yesHistory, EarlyView.
Abstract No other country defined the trajectory of Churchill's political career more than Germany, a country of which he had little direct knowledge but which he either sought to emulate, accommodate or oppose throughout his time in politics. This article traces Churchill's relationship with Germany from his entry into politics at the beginning of the
T. G. Otte
wiley   +1 more source

Wake Homing Torpedo Guidance Using a Hierarchical Deep Reinforcement Learning Framework

open access: yesIEEE Access
This paper proposes a novel Hierarchical Deep Reinforcement Learning (HRL) framework for wake homing torpedo guidance, applying the Discrete Event System Specification (DEVS) formalism to design high-level policies and reward shaping functions.
Kunchul Hwang, Jinwhan Kim
doaj   +1 more source

Bubble density gradient with laser detection: A wake-homing scheme for supercavitating vehicles

open access: yesAdvances in Mechanical Engineering, 2018
The poor mobility and complex target motion estimation are the two main challenges in the anti-ship attack missions of high-speed guided missiles. In this study, a new wake-homing scheme of supercavitating vehicles is proposed using the gradient wake ...
Jia Song   +3 more
doaj   +1 more source

Modelling and Simulation at The University of Liverpool in Support of UK Naval Aviation [PDF]

open access: yes, 2016
Along with the restricted landing area and the rolling, pitching and heaving of the ship's deck, the pilot also needs to contend with the turbulent wake produced by the air flow over the ship's superstructure.
Kelly, M   +4 more
core  

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