Results 291 to 300 of about 439,852 (337)
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Arthropod Structure & Development, 2004
Lobsters are generalist decapods that evolved in a broad variety of niches in the Northwestern Atlantic. Due to their inherent buoyancy they have acquired adaptations to reduced traction and surge. We have developed a biomimetic robot based on the lobster that features artificial muscle actuators and sensors employing labeled-line codes.
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Lobsters are generalist decapods that evolved in a broad variety of niches in the Northwestern Atlantic. Due to their inherent buoyancy they have acquired adaptations to reduced traction and surge. We have developed a biomimetic robot based on the lobster that features artificial muscle actuators and sensors employing labeled-line codes.
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2023
Abstract Snorkeling and SCUBA diving have become very popular but require a good understanding of the physics and physiology of the environment as well as the equipment used. Breathing nitrogen at excessive depths can lead to serious dysphoria, high pressure oxygen can cause convulsions, while CO2 retention is a potential problem when ...
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Abstract Snorkeling and SCUBA diving have become very popular but require a good understanding of the physics and physiology of the environment as well as the equipment used. Breathing nitrogen at excessive depths can lead to serious dysphoria, high pressure oxygen can cause convulsions, while CO2 retention is a potential problem when ...
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Ergonomics, 1988
A mathematical model is developed for ballistic arm movements in an underwater environment. Characteristics of the arm moving in water, the ‘induced’ moment of inertia and drag coefficient, are found from experiments on an artificial arm. These data, along with the mathematical model, are used to predict underwater movement times from experimental data
E R, Hoffmann, K C, Gan
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A mathematical model is developed for ballistic arm movements in an underwater environment. Characteristics of the arm moving in water, the ‘induced’ moment of inertia and drag coefficient, are found from experiments on an artificial arm. These data, along with the mathematical model, are used to predict underwater movement times from experimental data
E R, Hoffmann, K C, Gan
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Human Factors: The Journal of the Human Factors and Ergonomics Society, 1972
Twelve SCUBA divers were assigned in groups of four to depths of 30, 60, and 90 ft. in the ocean to examine 13 plates of a standard diagnostic color perception test. In clear water, under conditions of low illumination, colors in the full range of the visible spectrum were detectable at 90 ft.
F L, Behan, R A, Behan, H W, Wendhausen
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Twelve SCUBA divers were assigned in groups of four to depths of 30, 60, and 90 ft. in the ocean to examine 13 plates of a standard diagnostic color perception test. In clear water, under conditions of low illumination, colors in the full range of the visible spectrum were detectable at 90 ft.
F L, Behan, R A, Behan, H W, Wendhausen
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Theoretical and Computational Fluid Dynamics, 1998
We investigate the effect of the interior mechanical structure of the streamers on the flow noise. Simple algebraic forms are derived for the comparative performance of liquid and viscoelastic-filled streamers. The introduction of porous foam into liquid streamers is found to be a particularly effective way of attenuating low wave-number disturbances ...
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We investigate the effect of the interior mechanical structure of the streamers on the flow noise. Simple algebraic forms are derived for the comparative performance of liquid and viscoelastic-filled streamers. The introduction of porous foam into liquid streamers is found to be a particularly effective way of attenuating low wave-number disturbances ...
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Avoidance of underwater cliffs for autonomous underwater vehicles
IEEE/RSJ International Conference on Intelligent Robots and System, 2003This paper introduces a method aiming to allow underactuated autonomous underwater vehicles navigating in an unknown environment to avoid underwater cliffs. Three electro-acoustic transducers situated in the front part of the vehicle provide bathymetric data.
Creuze, Vincent, Jouvencel, Bruno
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Internet of Underwater Things and Big Marine Data Analytics—A Comprehensive Survey
IEEE Communications Surveys and Tutorials, 2021Mohammad Jahanbakht +2 more
exaly
A Survey of Routing Protocols for Underwater Wireless Sensor Networks
IEEE Communications Surveys and Tutorials, 2021Junhai Luo
exaly