Results 51 to 60 of about 2,250,364 (348)

Control of Ship Roll Motion [PDF]

open access: yes, 2014
The undesirable effects of roll motion of ships (rocking about the longitudinal axis) became noticeable in the mid-nineteenth century when significant changes were introduced to the design of ships as a result of sails being replaced by steam engines and the arrangement being changed from broad to narrow hulls.
Perez, Tristan, Blanke, Mogens
openaire   +2 more sources

The influence of ship motion of manual control skills [PDF]

open access: yes, 1981
The effects of ship motion on a range of typical manual control skills were examined on the Warren Spring ship motion simulator driven in heave, pitch, and roll by signals taken from the frigate HMS Avenger at 13 m/s (25 knots) into a force 4 wind.
Duross, H.   +3 more
core   +1 more source

Stability and Tracking Control of Nonlinear Rigid-Body Ship Motions

open access: yesJournal of Marine Science and Engineering, 2022
The stability and tracking controls of a dynamic ship system are studied in this paper, in order to stabilize and track the desired path of a catamaran ship system.
Chatchawan Aumtab, Thanapat Wanichanon
doaj   +1 more source

Using piloted simulation to measure pilot workload of landing a helicopter on a small ship [PDF]

open access: yes, 2017
When conducting landings to a ship's deck in strong winds, helicopter pilot workload is often dominated by the turbulence within the ship's airwake. Previous studies have shown that larger ships create more aggressive airwakes and simulated flight trials
Kelly, MF, Owen, L, Scott, P, White, MD
core  

Ecosystem‐Centered Robot Design: Toward Ecoresorbable Sustainability Robots (ESRs)

open access: yesAdvanced Science, EarlyView.
Robots exploring natural ecosystems can support monitoring and conservation, but must adopt ecosystem‐centered design to avoid pollution, waste, and damage. This review proposes guidelines for co‐designing ecoresorbable sustainability robots (ESRs), uniting materials, robotics, and ecological contexts in a single framework.
Tülin Yılmaz Nayır   +4 more
wiley   +1 more source

Feasibility of Wave Measurement by Using a Sailing Buoy and the Artificial Neural Network Technique

open access: yesShanghai Jiaotong Daxue xuebao, 2022
Ocean waves have adverse effects on the operation and safety of ships. Real-time and accurate onboard wave monitoring is essential for green smart ships and navigational safety.
QIN Yichao, HUANG Limin, WANG Xiao, MA Xuewen, DUAN Wenyang, HAO Wei
doaj   +1 more source

A Fully Nonlinear, Dynamically Consistent Numerical Model for Solid-Body Ship Motion. I. Ship Motion with Fixed Heading [PDF]

open access: yes, 2011
In this paper, we describe the details of our numerical model for simulating ship solidbody motion in a given environment. In this model, the fully nonlinear dynamical equations governing the time-varying solid-body ship motion under the forces arising ...
Kuang, Weijia, Lin, Ray-Quing
core   +1 more source

Intertidal Warfare: Synergistic Allelopathy Mediates Spatial Competition between Two Marine Calcareous‐Shelled Sessile Organisms

open access: yesAdvanced Science, EarlyView.
This study reveals a hidden chemical weapon among calcareous‐shelled sessile organisms in the intertidal zone: the barnacle Balanus albicostatus releases a synergistic blend of palmitic acid and 1‐palmitoyl‐sn‐glycero‐3‐phosphocholine as the allelochemical with the inhibitory activity against attachment of the mussel Vignadula atrata, which may mediate
Zhuo Li   +9 more
wiley   +1 more source

PERANCANGAN KAPAL UNTUK MENUNJANG KEGIATAN PARIWISATA DI WADUK JATILUHUR, PURWAKARTA

open access: yesKapal, 2012
Jatiluhur had the very big tourism potency so that it was required the supporting mean such as the tour ship which was better than the wooden ship. The research about the tour ship design having a catamaran hull form was expected to help the development ...
Parlindungan Manik, Ahmad Didi Ahmadi
doaj   +1 more source

Ship roll motion prediction based on ℓ1 regularized extreme learning machine. [PDF]

open access: yesPLoS ONE, 2018
In this paper, a new method is proposed for prediction of ship roll motion based on extreme learning machine (ELM). To improve the prediction accuracy and avoid over or under fitting, two techniques are adopted to select the appropriate structure of ELM.
Binglei Guan   +3 more
doaj   +1 more source

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