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ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57

Control of Ship Radiated Underwater Noise

As human activity in the oceans has grown and scientific understanding of underwater noise has increased, it has been generally accepted that the growth of anthropogenic noise in the ocean has acute, chronic, and cumulative impacts on marine species, most notably marine mammals who depend on sound for ...

Diver Gesture Recognition using Deep Learning for Underwater Human-Robot Interaction

This paper presents a diver gesture recognition method for autonomous underwater vehicles (AUVs) to facilitate human-robot collaborative tasks. While previous methods of underwater human-robot communication required the use of expensive and bulky keyboard or joystick controls, hand gestures are becoming ...

Detection of Fishing Boats in SAR Image using Linear Moments and Machine Learning

Synthetic Aperture Radar is a popular instrument used in maritime surveillance due to its all weather imaging capabilities and ability to discriminate objects from its backscatter. One of the important concern in maritime safety is detection of fishing boats for rescue and other strategic operations. ...

Assessing Dungeness River Functionality and Effectiveness of Best Management Practices (BMPs) Using an Ecological Functional Approach

Effective stream and wetland Best Management Practices (BMPs) restore the physical processes associated with ecological functions to their Proper Functioning Condition (PFC, i.e., the highest attainable ecological status of a riparian area without consideration of economic, administrative, or social ...

Shaping EU Plastic Policies: The Role of Public Health vs. Environmental Arguments

Few other environmental problems have received as much public attention and criticism in recent years as plastic pollution. Accordingly, in recent years, a number of plastic policies have been adopted at the national and supranational level in the EU and worldwide. In the U.S., health risks were repeatedly ...

Electrochemical Study of a Hybrid Polymethyl Methacrylate Coating using SiO2 Nanoparticles toward the Mitigation of the Corrosion in Marine Environments

The demand for hydrophobic polymer-based protective coatings to impart high corrosion resistance has increased recently. The increase of the hydrophobicity in a hybrid coating is a new challenge, for that reason and in order to protect a metallic surface of oxidant agents, a poly (methyl methacrylate) ...

Thermal biology and swimming performance of Atlantic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)

Atlantic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) are two commercially important marine fishes impacted by both overfishing and climate change. Increasing ocean temperatures are affecting the physiology of these species and causing changes in distribution, growth, and maturity. While ...

An Analysis of Resistance and Stability of Double Step Hull with Fast Craft

This research is to analyze the resistance and stability of double step hull with fast craft. Fast boats have a design to reach the desired speed. In the manufacture of a ship, the manufacturers always pay attention to the economic and technological side, which is in addition to the planned design parameters, ...

Deep Nets Spotlight Illegal, Unreported, Unregulated (IUU) Fishing

The need for increased global surveillance and enforcement efforts to combat Illegal, Unreported, Unregulated (IUU) fishing is well known. This paper describes the current research status in developing a novel technique of associating Automated Identification System (AIS) anti-collision messages to ...

Hydroxyapatite Synthesis from Clam Shell Using Hydrothermal Method : A Review

The synthesis of hydroxyapatite biomaterial has been growing in interest due hydroxyapatite (HAp) is an essential ingredient for recovering of bone and teeth problems. As low-cost production is currently being sought out for, the high content of calcium carbonate in clamshell waste can be used as an ...

Combining a Deep Convolutional Neural Network with Transfer Learning for Ship Classification

The classification of ship targets is essential for maritime search and rescue, fishing vessel monitoring, and other maritime supervision. Aiming at the problems of low recognition accuracy due to insufficient image resolution of the ship, a high-resolution remote sensing image ship target recognition ...

Satellite-derived bathymetry using a radiative transfer-based method: A comparison of different atmospheric correction methods

Accurate bathymetry information, in form of maps of water depth, is essential for a wide variety of purposes including offshore activities (e.g., pipeline laying), resource management (e.g., fishery), and defense (e.g., navigation). In this study, we compared three atmospheric correction algorithms ...

Transboundary Pollution in the New Legally Binding Instrument under the U.N. Convention on the Law of the Sea: The case for anthropogenic underwater noise

The United Nations General Assembly has initiated a process to negotiate a new legally binding instrument to establish a framework for the conservation and sustainable use of biological diversity beyond national jurisdiction (BBNJ). These negotiations are taking place pursuant to the United Nations ...

Integrated Monitoring Systems for Coastal Communities

With approximately 40 percent of the world's population living within 100 km of the coast, it is critical that the ocean environment upon which these people depend be persistently monitored. Fortunately, coastal communities are ideally situated to take the leading role in this effort by leveraging their ...

The greatest challenge for URN reduction in the oceans by means of engineering

The Underwater Radiated Noise (URN) of the oceans due to shipping activity has increased during the last decades. This significant increment of URN can be explained by the remarkable growth of maritime traffic in recent years and the greater number of seismic explorations in the oceans. In relation ...

Zero-fuel open ocean-going tugs, and applications for the large scale collection of ocean plastics

This paper presents analysis of an innovative new zero fuel propulsion technology developed for open ocean transportation, and discusses near term applications in the mitigation of ocean plastic pollution. The Wave Tug is an innovation in propulsion technology evolved from decades of research and testing ...

Frequency Invariant Beamformers for Underwater Sound

The increasingly widespread use of broadband acoustic signals for underwater communications, sonars for survey work and fisheries research incentivises the design of beamformers with frequency-invariant beampatterns to minimise angular variations of the signal spectral content and angular width of the ...

The Worlds Most Efficient and Environmentaly Friendly Coastal Shipping

Norway has committed itself to reducing greenhouse gas emissions by 40 percent by 2030 - a massive challenge. The Green Shipping Program aims to find scalable solutions for efficient and environmentally friendly shipping. The results will be cost-effective emission cuts, economic growth, increased competitiveness, ...

Development and evaluation of a passive acoustic localization method to monitor fish spawning aggregations and measure source levels

More than 800 species of fish produce sound including red hind (Epinephelus guttatus), Nassau (E. striatus), black (Mycteroperca bonaci), and yellowfin grouper (M. venenosa). Their sounds can be used to monitor these fish and may be a means to estimate abundance if parameters such as source levels, ...

Photo-Model-Based Stereo-Vision 3D Perception for Marine Creatures Catching by ROV

By incorporating visual information obtained from the installed vision sensor into the feedback loop, visual servoing enables the robot to be able to operate in a changing environment or an unknown environment. In the past, the authors have proposed a real-time monocular fish-catching robot. However, ...

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