Results 41 to 50 of about 99,552 (308)
Mutilating predation in the Cheirodontinae Odontostilbe pequira (Characiformes: Characidae)
Neotropical IchthyologyWe observed individuals of Odontostilbe pequira, a small characid, approaching and biting individuals of larger-bodied fishes of other species. This observation was made in two clear water headwater streams of the Cuiabá basin, Paraguay River system ...
Monise R. L. Lima +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 The detection and localization of acoustic sources remain technological challenges in bioacoustics, in particular, the tracking of moving underwater sound sources with a portable waterproof tool.
Yann Doh +8 more
doaj +1 more source
Curiosity Based Exploration for Learning Terrain Models
, 2013 We present a robotic exploration technique in which the goal is to learn to a visual model and be able to distinguish between different terrains and other visual components in an unknown environment.
Dudek, Gregory +2 more
core +1 more source
Optimal path shape for range-only underwater target localization using a Wave Glider [PDF]
, 2018 Underwater localization using acoustic signals is one of the main components in a navigation system for an autonomous underwater vehicle (AUV) as a more accurate alternative to dead-reckoning techniques.
Aguzzi, Jacopo +6 more
core +2 more sources
Advanced Engineering Materials, EarlyView.Cladding is a proven method that boosts the surface qualities of mechanical parts by applying a layer of more durable material over a base substrate. This work responds to the needs of offshore and pressure vessels sectors by focusing on cladding a super austenitic steel onto low‐carbon steel through gas tungsten arc welding.
E. J. da Cruz Junior +6 more
wiley +1 more source
Известия ТИНРО, 2016 Underwater observations were conducted to assess the impact of the research Danish seine elements on behavior of walleye pollock Theragra chalcogramma in its active zone.
Ivan V. Roy
doaj +1 more source
Journal of Marine Science and Engineering, 2021 Visual observations of the marine biodiversity can be difficult in specific areas for different reasons, including weather conditions or a lack of observers. In such conditions, passive acoustics represents a potential alternative approach. The objective
Paul Nguyen Hong Duc +6 more
doaj +1 more source
A Study of the Freezing Cycle in an Alaskan Stream : A Completion Report [PDF]
, 1973 The work upon which this report is based was supported in part by funds (Proj. A-012-ALAS) provided by the United States Department of the Interior, Office of Water Resources Research, as authorized under the Water Resources Act of 1964, as ...
Benson, Carl S.
core
Robust Singular Smoothers For Tracking Using Low-Fidelity Data
, 2019 Tracking underwater autonomous platforms is often difficult because of noisy, biased, and discretized input data. Classic filters and smoothers based on standard assumptions of Gaussian white noise break down when presented with any of these challenges ...
Aravkin, Aleksandr +4 more
core +1 more source
Advanced Engineering Materials, EarlyView.Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies +2 more
wiley +1 more source