Results 71 to 80 of about 16,108 (315)

Field Measurements of Motions of Small Ship in Ship Waves

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN, 1997
When we evaluate the safety of activity on a floating pier or a small ship, it is important to know the characteristics of motions in ship waves. Because when ship waves come to a floating body, the motions become large unexpectedly. The main purpose of this study is to investigate the characteristics of ship motions in waves generated by a high-speed ...
SAITO, Katsuhiko, SHIOTANI, Shigeaki, FUJITOMI, Nobuyuki   +2 more
openaire   +2 more sources

Automatic Determination of Quasicrystalline Patterns from Microscopy Images

Advanced Intelligent Discovery, EarlyView.
This work introduces a user‐friendly machine learning tool to automatically extract and visualize quasicrystalline tiling patterns from atomically resolved microscopy images. It uses feature clustering, nearest‐neighbor analysis, and support vector machines. The method is broadly applicable to various quasicrystalline systems and is released as part of
Tano Kim Kender, Marco Corrias, Cesare Franchini   +2 more
wiley   +1 more source

Study on high performance of a ship propulsion device by using the Weis-Fogh mechanism

Journal of Fluid Science and Technology, 2018
The purpose of this study is to develop a high performance propulsive mechanism with high efficiency at high sailing speed by using a mechanism of rotary reciprocating wing motion based on the two-dimensional Weis-Fogh model.
Masahiko SAKAMOTO, Michihisa TSUTAHARA
doaj   +1 more source

Study of motion sickness incidence in ship motion

Science and Technology Development Journal, 2015
Motion sickness incidence index (MSI) is one of essential issues in ship motion research to access the comfort of passenger on board cruises and yachts. In the paper, wave energy spectrum and MSI will be analyzed. Evaluation will not only provide an initial feedback of passenger’s comfort in ship design stage but also estimate the suitable speed to ...
Tat - Hien Le, Tuan Anh Nguyen
openaire   +2 more sources

Optimizing 3D Bin Packing of Heterogeneous Objects Using Continuous Transformations in SE(3)

Advanced Intelligent Systems, EarlyView.
This article presents a method for solving the three‐dimensional bin packing problem for heterogeneous objects using continuous rigid‐body transformations in SE(3). A heuristic optimization framework combines signed‐distance functions, neural network approximations, point‐cloud bin modeling, and physics simulation to ensure feasibility and stability ...
Michele Angelini, Marco Carricato
wiley   +1 more source

A Two‐Stage Characterization Pipeline and Open‐Source Framework for Reproducible Tactile Sensing

Advanced Intelligent Systems, EarlyView.
The same soft tactile sensor returns different numbers when embodied in different robots. This is an Embodiment Gap that no shared framework currently captures transparently. A two‐stage characterization pipeline, paired with a FAIR open‐source digital datasheet, decouples intrinsic sensor behavior from embodiment effects and condenses cross‐laboratory
Matteo Lo Preti, Weng Buxiu, Petr Trunin, Muhammad Sunny Nazeer, Lucia Beccai, Perla Maiolino, Cecilia Laschi   +6 more
wiley   +1 more source

PPO‐Based Reinforcement Learning for the Semi‐Active Vibration Control of MDOF Platform

AI &Innovation, EarlyView.
ABSTRACT Aiming at the coupled vibration problem of a multi‐degree‐of‐freedom (MDOF) vibration isolation platform under eccentric excitation, this paper proposes a semi‐active vibration control strategy based on Proximal Policy Optimization (PPO) ‐based reinforcement learning (PPO RL).
Wei Huang, Jian Xu
wiley   +1 more source

PENAMBAHAN HAMBATAN DALAM PERHITUNGAN TAHANAN KAPAL AKIBAT GERAK KAPAL PADA GELOMBANG

Teknik, 2012
Addition of resistance in calculation of ship resistance effect of ship motion at wave. Six natural degree offreedom by a ship thai is surging, swaying, heaving, rolling, pitching and yawing.In general movement bounce up ship have very complex geometry ...
Zulfaidah Ariany
doaj  

Ship-Borne Phased Array Radar Using GA Based Adaptive α-β-γ Filter for Beamforming Compensation and Air Target Tracking

International Journal of Antennas and Propagation, 2015
Beam pointing error caused by ship motion over the ocean affects the tracking performance of the ship-borne phased array radar. Due to the dynamic nature of the sea environments, the ship-borne phased array radar must be able to compensate for the ship’s
J. Mar, Chen-Chih Liu, M. B. Basnet
doaj   +1 more source

Examining pathways by which socioeconomic instability in adolescence influence sexual health during emerging adulthood in an agricultural setting in California

American Journal of Community Psychology, EarlyView.
Abstract This study investigates the longitudinal impact of socioeconomic instability on teen pregnancy and sexually transmitted infection (STI) diagnosis among adolescents and young adults (AYA) living in an agricultural region and examines pathways including supportive family and social structures, decision making autonomy in romantic relationships ...
Marie C. D. Stoner, Erica N. Browne, Marissa Raymond‐Flesch, Mary Kate Shapley‐ Quinn, Nivedita L. Bhushan, Alondra Jaime‐Aguilar, Carmen Ramirez, Jessica Huante, Daisy Gallardo, Sue Napierala, Megan Comfort, Alexandra M. Minnis   +11 more
wiley   +1 more source