Shuqing Ma
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View article: Inversion of Seawater Sound Speed Profile Based on Hamiltonian Monte Carlo Algorithm
Inversion of Seawater Sound Speed Profile Based on Hamiltonian Monte Carlo Algorithm Open
Inverting seawater sound speed profiles (SSPs) using Bayesian methods enables optimal parameter estimation and provides a quantitative assessment of uncertainty by analyzing the posterior distribution of target parameters. However, in nonl…
View article: Inversion of Munk Sound Speed Profile Based on Hamiltonian Monte Carlo Algorithm
Inversion of Munk Sound Speed Profile Based on Hamiltonian Monte Carlo Algorithm Open
The velocity profile is a crucial parameter that describes the characteristics of sound waves in the ocean, playing a significant role in underwater communication and detection. Traditional methods for acquiring velocity profiles in the co…
View article: Artificial Intelligence-Based Underwater Acoustic Target Recognition: A Survey
Artificial Intelligence-Based Underwater Acoustic Target Recognition: A Survey Open
Underwater acoustic target recognition has always played a pivotal role in ocean remote sensing. By analyzing and processing ship-radiated signals, it is possible to determine the type and nature of a target. Historically, traditional sign…
View article: Application of a spectral scheme to simulate horizontally slowly varying three-dimensional ocean acoustic propagation
Application of a spectral scheme to simulate horizontally slowly varying three-dimensional ocean acoustic propagation Open
Three-dimensional numerical models for underwater sound propagation are popular in computational ocean acoustics. For horizontally slowly varying waveguide environments, an adiabatic mode-parabolic equation hybrid theory can be used for si…
View article: Application of Monte Carlo simulation to optimise the dosage regimen of meropenem in patients with augmented renal clearance for Pseudomonas aeruginosa infection
Application of Monte Carlo simulation to optimise the dosage regimen of meropenem in patients with augmented renal clearance for Pseudomonas aeruginosa infection Open
Tailored dosing based on bacterial MIC values is crucial for patients with ARC. Prolonged infusion time alone does not enhance efficacy. Empirical treatment in patients with ARC should consider MIC distribution; a dosage of 2 g q 6 h achie…
View article: Efficiency of radiotherapy plus Anlotinib in alleviating edema and increasing radiosensitivity in symptomatic brain metastasis patients: A retrospective study
Efficiency of radiotherapy plus Anlotinib in alleviating edema and increasing radiosensitivity in symptomatic brain metastasis patients: A retrospective study Open
Background:Patients with brain metastases (BM) often suffer from peritumoral edema. The purpose of study was to assess the effect of anlotinib in alleviating peritumoral edema and increasing tumour regression in symptomatic BM patients dur…
View article: Sound intensity fluctuations caused by internal solitary wave train in the South China Sea
Sound intensity fluctuations caused by internal solitary wave train in the South China Sea Open
Dynamic internal solitary wave (ISW) can cause significant underwater sound fluctuations. In this paper, the periodic characteristics of sound intensity fluctuations and related physical mechanisms are investigated in the scenario that an …
View article: Three-dimensional modeling of Marine Controlled Source Electromagnetic field using a space-wavenumber domain method
Three-dimensional modeling of Marine Controlled Source Electromagnetic field using a space-wavenumber domain method Open
Under complex conditions, the three-dimensional modeling of Marine Controlled Source Electromagnetic field requires a significant amount of computation, resulting in slow calculation speed and high storage requirements. To solve these prob…
View article: A study on the driving path of farmers' participation in physical activity and its impact on happiness
A study on the driving path of farmers' participation in physical activity and its impact on happiness Open
Based on the theoretical framework of socioecology, this study systematically examines the antecedent grouping patterns of farmers' participation in physical activity and their effects on well-being in 19 provinces of China using fuzzy set…
View article: Adversarial Attacks in Underwater Acoustic Target Recognition with Deep Learning Models
Adversarial Attacks in Underwater Acoustic Target Recognition with Deep Learning Models Open
Deep learning models can produce unstable results by introducing imperceptible perturbations that are difficult for humans to recognize. This can have a significant impact on the accuracy and security of deep learning applications due to t…
View article: GIT: A Transformer-Based Deep Learning Model for Geoacoustic Inversion
GIT: A Transformer-Based Deep Learning Model for Geoacoustic Inversion Open
Geoacoustic inversion is a challenging task in marine research due to the complex environment and acoustic propagation mechanisms. With the rapid development of deep learning, various designs of neural networks have been proposed to solve …
View article: Research on the broadband source localization of a vector hydrophone vertical line array in the deep sea
Research on the broadband source localization of a vector hydrophone vertical line array in the deep sea Open
This paper develops an approach that estimates the range and depth of a broadband source by adopting the vector hydrophone vertical array (VHVA) in the deep ocean. The sound field in the direct wave zone is mainly composed of direct (D) an…
View article: A spectral method for the depth-separated solution of a wavenumber integration model for horizontally stratified fluid acoustic waveguides
A spectral method for the depth-separated solution of a wavenumber integration model for horizontally stratified fluid acoustic waveguides Open
The wavenumber integration model is the most precise approach for assessing arbitrary horizontally stratified media within the sphere of computational ocean acoustics. Unlike the normal-mode approach, it considers not only discrete spectra…
View article: Riemannian geometric modeling of underwater acoustic ray propagation—Basic theory
Riemannian geometric modeling of underwater acoustic ray propagation—Basic theory Open
Underwater sound propagation models are generally established from the extrinsic perspective, that is, embedding acoustic channels in Euclidean space with a fixed coordinate system. Riemannian geometry is intrinsic for curved space, which …
View article: Riemannian geometric modeling of underwater acoustic ray propagation ·application——Riemannian geometric model of convergence zone in deep ocean remote sound propagation
Riemannian geometric modeling of underwater acoustic ray propagation ·application——Riemannian geometric model of convergence zone in deep ocean remote sound propagation Open
Convergence-zone (CZ) sound propagation is one of the most important hydro-acoustic phenomena in the deep ocean, which allows the acoustic signals with high intensity and low distortion to realize the long-range transmission. Accurate pred…
View article: A novel algorithm to solve for an underwater line source sound field based on coupled modes and a spectral method
A novel algorithm to solve for an underwater line source sound field based on coupled modes and a spectral method Open
View article: Structural design and performance study of primitive triply periodic minimal surfaces Ti6Al4V biomimetic scaffold
Structural design and performance study of primitive triply periodic minimal surfaces Ti6Al4V biomimetic scaffold Open
This paper comprehensively evaluated the static mechanical compressive properties, permeability, and cell adhesion effect on the inner wall of the Primitive triply periodic minimal surface Ti6Al4V bionic scaffolds with different axial diam…
View article: Parallel optimization of underwater acoustic models: A survey
Parallel optimization of underwater acoustic models: A survey Open
Underwater acoustic models are effective tools for simulating underwater sound propagation. More than 50 years of research have been conducted on the theory and computational models of sound propagation in the ocean. Unfortunately, underwa…
View article: A Spectral Method for Depth-Separated Solution of a Wavenumber Integration Model in Horizontally Stratified Fluid Acoustic Waveguides
A Spectral Method for Depth-Separated Solution of a Wavenumber Integration Model in Horizontally Stratified Fluid Acoustic Waveguides Open
The wavenumber integration model is considered to be the most accurate algorithm for arbitrary horizontally stratified media in computational ocean acoustics. In contrast to the normal mode approach, it considers not only the discrete wave…
View article: Application of a Spectral Method to Simulate Quasi-Three-Dimensional Underwater Acoustic Fields
Application of a Spectral Method to Simulate Quasi-Three-Dimensional Underwater Acoustic Fields Open
The calculation of a three-dimensional underwater acoustic field has always been a key problem in computational ocean acoustics. Traditionally, this solution is usually obtained by directly solving the acoustic Helmholtz equation using a f…
View article: A three-dimensional finite difference model for ocean acoustic propagation and benchmarking for topographic effects
A three-dimensional finite difference model for ocean acoustic propagation and benchmarking for topographic effects Open
A three-dimensional (3D) finite difference (FD) model with formal fourth-order accuracy has been developed for the ocean acoustic Helmholtz equation (HE), which can be used to address arbitrary bathymetry and provide more accurate benchmar…
View article: Applying a Legendre collocation method based on domain decomposition to calculate underwater sound propagation in a horizontally stratified environment
Applying a Legendre collocation method based on domain decomposition to calculate underwater sound propagation in a horizontally stratified environment Open
View article: Corrigendum to ‘A Chebyshev-Tau spectral method for normal modes of underwater sound propagation with a layered marine environment’: [Journal of Sound and Vibration 492 (2021) 115784]
Corrigendum to ‘A Chebyshev-Tau spectral method for normal modes of underwater sound propagation with a layered marine environment’: [Journal of Sound and Vibration 492 (2021) 115784] Open
View article: A Chebyshev-Tau spectral method for normal modes of underwater sound propagation with a layered marine environment
A Chebyshev-Tau spectral method for normal modes of underwater sound propagation with a layered marine environment Open
The normal mode model is one of the most popular approaches for solving underwater sound propagation problems. Among other methods, the finite difference method is widely used in classic normal mode programs. In many recent studies, the sp…
View article: Reliable Acoustic Path and Direct-Arrival Zone Spatial Gain Analysis for a Vertical Line Array
Reliable Acoustic Path and Direct-Arrival Zone Spatial Gain Analysis for a Vertical Line Array Open
A method is developed in this paper to calculate the spatial gain of a vertical line array when the plane-wave assumption is not applicable and when the oceanic ambient noise is correlated. The proposed optimal array gain (OAG), which can …
View article: Research of MCU ultrasonic range finder
Research of MCU ultrasonic range finder Open
ultrasonic ranging system USES AT89C51 as the main controller, the dynamic scanning method is used to implement LED digital tube digital display, complete the ultrasonic driving signal with single-chip microcomputer timer.Ultrasonic direct…