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Journal of Marine Science and Engineering, Volume 10, Issue 6

June 2022 - 128 articles

Cover Story: The automatic classification of fish images captured under water is a challenging task with a broad potential impact for environmental conservation. Convolutional neural network models employed for image recognition typically require very large datasets to train millions of model parameters. However, underwater fish image and video datasets are scarce and unbalanced, so neural models may be inadequately trained. We engineer convolutional neural networks with up to ~50,000 parameters, which require much smaller datasets for training and run in much more constrained embedded platforms. By augmenting neural models with a tracking algorithm that recognizes fish specimens across video frames, we obtain a classifier of very limited overall complexity. Experiments in the Mediterranean Sea confirm a good level of accuracy for fish recognition in the wild. View this paper
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Articles (128)

  • Article
  • Open Access
2,289 Views
21 Pages

This paper presents calibration and verification of the laterally averaged model for estuaries (LAMFE) for the Chassahowitzka River, a spring-fed estuary located on the Gulf coast of central Florida, USA. The river is a narrow and complex riverine sy...

  • Review
  • Open Access
16 Citations
4,001 Views
17 Pages

The present study reviews the recent advances in modelling and analyses the strength of corroded ship structures. Firstly, the time-variant methodologies that consider only the mean structural element thickness loss due to corrosion degradation are i...

  • Article
  • Open Access
3 Citations
2,341 Views
17 Pages

Experimental Study on Unsteady Cavitating Flow and Its Instability in Liquid Rocket Engine Inducer

  • Hao Wang,
  • Jian Feng,
  • Keyang Liu,
  • Xi Shen,
  • Bin Xu,
  • Desheng Zhang and
  • Weibin Zhang

To study instability in the unsteady cavitating flow in a liquid rocket engine inducer, visualization experiments of non-cavitating and cavitating flows inside a model inducer were carried out at different flow conditions. Visual experiments were car...

  • Article
  • Open Access
8 Citations
3,986 Views
18 Pages

The automatic identification system (AIS), despite its importance in worldwide navigation at sea, does not provide any defence mechanisms against deliberate misuse, e.g., by sea pirates, terrorists, business adversaries, or smugglers. Previous work h...

  • Article
  • Open Access
74 Citations
6,248 Views
18 Pages

An Improved Ship Trajectory Prediction Based on AIS Data Using MHA-BiGRU

  • Kexin Bao,
  • Jinqiang Bi,
  • Miao Gao,
  • Yue Sun,
  • Xuefeng Zhang and
  • Wenjia Zhang

According to the statistics of water transportation accidents, collision accidents are on the rise as the shipping industry has expanded by leaps and bounds, and the water transportation environment has become more complex, which can result in grave...

  • Article
  • Open Access
2 Citations
2,526 Views
9 Pages

Numerous explicit approximations of the Colebrook equation have been developed and evaluated based on two criteria: prediction accuracy and computational efficiency. This paper introduces a new evaluation criterion based on the reliability of each eq...

  • Article
  • Open Access
1 Citations
2,287 Views
7 Pages

Usually, the need for research arises when there is a discrepancy between the theoretical and practical data. For example, the RINA (Registro Italiano Navale) Rules describe two navigation areas for yachts: unrestricted navigation and a navigation ar...

  • Article
  • Open Access
16 Citations
5,138 Views
23 Pages

Geochemical Analysis of Cretaceous Shales from the Hazara Basin, Pakistan: Provenance Signatures and Paleo-Weathering Conditions

  • Abdul Ghaffar Fazal,
  • Muhammad Umar,
  • Faisal Shah,
  • Muhammad Armaghan Faisal Miraj,
  • Hammad Tariq Janjuhah,
  • George Kontakiotis and
  • Abdul Khaliq Jan

The geochemical investigation of shales from the Early to Middle Cretaceous Chichali Formation in the Hazara Basin was conducted to determine the origin, tectonic setting and evolution, paleo-weathering conditions, and paleo-oceanographic reconstruct...

  • Article
  • Open Access
13 Citations
3,073 Views
17 Pages

Natural gas hydrate (NGH) dissociation is a heat-absorbing process, and the cooling around the wellhead is more pronounced during depressurization production. Low temperature will cause NGH regeneration or ice formation, blocking gas flow paths and r...

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J. Mar. Sci. Eng. - ISSN 2077-1312