Jiming Song
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View article: ReVeal-MT: A Physics-Informed Neural Network for Multi-Transmitter Radio Environment Mapping
ReVeal-MT: A Physics-Informed Neural Network for Multi-Transmitter Radio Environment Mapping Open
Accurately mapping the radio environment (e.g., identifying wireless signal strength at specific frequency bands and geographic locations) is crucial for efficient spectrum sharing, enabling Secondary Users~(SUs) to access underutilized sp…
View article: Numerical Simulation of Heat Transfer in Layered-Plate Heat Exchangers for High-Temperature Cement Cooling
Numerical Simulation of Heat Transfer in Layered-Plate Heat Exchangers for High-Temperature Cement Cooling Open
Cement is a widely used construction material, but its high temperature after milling can lead to issues such as gypsum dehydration, cement agglomeration, and increased slump, all of which negatively affect concrete performance. Existing c…
View article: On singular vectors of simply-laced universal affine vertex operator algebras
On singular vectors of simply-laced universal affine vertex operator algebras Open
Given a finite-dimensional complex simple Lie algebra $\mathfrak{g}$ and a complex number $κ$, let $V^κ(\mathfrak{g})$ be the associated universal affine vertex algebra. In [GK07], the authors gave a sufficient and necessary condition for …
View article: Comparative Assessment of Two Numerical Methods for Eddy Current Nondestructive Evaluation: Insights from Benchmark Studies
Comparative Assessment of Two Numerical Methods for Eddy Current Nondestructive Evaluation: Insights from Benchmark Studies Open
View article: Study on Application of Encryption Mask in Butterfly Algorithm of fast Fourier Transform
Study on Application of Encryption Mask in Butterfly Algorithm of fast Fourier Transform Open
View article: Optimization and Experimental Study of Iron Ore Grinding Medium Parameters Using EDEM Discrete Element Software
Optimization and Experimental Study of Iron Ore Grinding Medium Parameters Using EDEM Discrete Element Software Open
Energy savings and consumption reduction of ball mills are crucial for industrial production. The grinding medium is an important component of a ball mill. In theory, using higher-density grinding media can yield better grinding results. H…
View article: Associated varieties of simple affine VOAs $L_k(sl_3)$ and $W$-algebras $W_k(sl_3,f)$
Associated varieties of simple affine VOAs $L_k(sl_3)$ and $W$-algebras $W_k(sl_3,f)$ Open
In this paper we first prove that the maximal ideal of the universal affine vertex operator algebra $V^k(sl_n)$ for $k=-n+\frac{n-1}{q}$ is generated by two singular vectors of conformal weight $3q$ if $n=3$, and by one singular vector of …
View article: Electromagnetic Scattering Properties of Metal Powder Cloud for Laser Powder Bed Fusion (LPBF) Additive Manufacturing (AM)
Electromagnetic Scattering Properties of Metal Powder Cloud for Laser Powder Bed Fusion (LPBF) Additive Manufacturing (AM) Open
Laser powder bed fusion (LPBF) is a cost-effective and relatively fast additive manufacturing (AM) technique, utilizing a laser source to selectively melt metallic powder and produce objects with intricate geometries. Nevertheless, establi…
View article: Efficient MAPoD via Least Angle Regression based Polynomial Chaos Expansion Metamodel for Eddy Current NDT
Efficient MAPoD via Least Angle Regression based Polynomial Chaos Expansion Metamodel for Eddy Current NDT Open
In this article, a metamodeling approach based on non-intrusive polynomial chaos expansion (PCE) with least angle regression (LAR) method is used in boundary element analysis for a model-assisted probability of detection (MAPoD) study of e…
View article: Using generative model for intelligent design of dielectric resonator antennas
Using generative model for intelligent design of dielectric resonator antennas Open
In the advancing field of 5G technologies, particularly at the 60 GHz band, dielectric resonator antennas (DRAs) stand out for their low conduction loss and high radiation efficiency. However, the traditional design process for DRAs, predo…
View article: Copper/Cobalt Based Metal Phosphide Composites as Positive Material for High-Performance Supercapacitors
Copper/Cobalt Based Metal Phosphide Composites as Positive Material for High-Performance Supercapacitors Open
View article: Baihetan - Jiangsu engineering soil and water conservation online monitoring data system
Baihetan - Jiangsu engineering soil and water conservation online monitoring data system Open
Baihetan - Jiangsu ± 800kV UHVDC project can improve the power supply stability of the hydropower station, which has very important economic significance. The construction of power transmission projects will affect the water and soil conse…
View article: Dispersion Characteristics and Applications of Higher Order Isosceles Triangular Meshes in the Finite Element Method
Dispersion Characteristics and Applications of Higher Order Isosceles Triangular Meshes in the Finite Element Method Open
Mesh division plays an important role in applications of the finite element method (FEM). The proposed research shows that under the same order, the equilateral triangular meshes have the most uniform dispersion distribution. The isosceles…
View article: Realizing Plain Optimization of the Thermoelectric Properties in BiCuSeO Oxide via Self-Substitution-Induced Lattice Dislocations
Realizing Plain Optimization of the Thermoelectric Properties in BiCuSeO Oxide via Self-Substitution-Induced Lattice Dislocations Open
Seeking new strategies to tune the intrinsic defect and optimize the thermoelectric performance via no or less use of external doped elements (i.e., plain optimization) is an important method to realize the sustainable development of therm…
View article: Efficient Model Assisted Probability of Detection Estimations in Eddy Current NDT with ACA-SVD Based Forward Solver
Efficient Model Assisted Probability of Detection Estimations in Eddy Current NDT with ACA-SVD Based Forward Solver Open
Model assisted probability of detection (MAPoD) is crucial for quantifying the inspection capability of a nondestructive testing (NDT) system which uses the coil or probe to sense the size and location of the cracks. Unfortunately, it may …
View article: Rapid Electromagnetic Modeling and Simulation of Eddy Current NDE by MLKD-ACA Algorithm with Integral Kernel Truncations
Rapid Electromagnetic Modeling and Simulation of Eddy Current NDE by MLKD-ACA Algorithm with Integral Kernel Truncations Open
In this article, a novel hybrid method of multilevel kernel degeneration and adaptive cross approximation (MLKD-ACA) algorithm with integral kernel truncations is proposed to accelerate solving integral equations using method of moments (M…
View article: Rational Design and Porosity of Porous Alumina Ceramic Membrane for Air Bearing
Rational Design and Porosity of Porous Alumina Ceramic Membrane for Air Bearing Open
Air bearing has been widely applied in ultra-precision machine tools, aerospace and other fields. The restrictor of the porous material is the key component in air bearings, but its performance is limited by the machining accuracy. A combi…
View article: Ultrawideband and high-efficient polarization conversion metasurface based on multi-resonant element and interference theory
Ultrawideband and high-efficient polarization conversion metasurface based on multi-resonant element and interference theory Open
In this work, an ultrawideband and high-efficient polarization conversion metasurface (PCM) is proposed, which can efficiently convert linearly polarized waves into cross-polarized waves in an ultra-wide frequency range. The unit cell of t…
View article: Modeling the Microwave Transmissivity of Row Crops
Modeling the Microwave Transmissivity of Row Crops Open
We develop a method to model the microwave transmissivity of row crops that explicitly accounts for their periodic nature as well as multiple scattering. We hypothesize that this method could eventually be used to improve satellite retriev…
View article: A well‐conditioned integral equation for electromagnetic scattering from composite inhomogeneous bi‐anisotropic material and closed perfect electric conductor objects
A well‐conditioned integral equation for electromagnetic scattering from composite inhomogeneous bi‐anisotropic material and closed perfect electric conductor objects Open
A well‐conditioned volume‐surface integral equation, called the volume integral equation‐combined field integral equation, is applied to analyse electromagnetic (EM) scattering from arbitrarily shaped three‐dimensional composite objects co…
View article: A Novel Design of Aperiodic Arrays for Ultrawideband Beam Scanning and Full Polarization Reconfiguration
A Novel Design of Aperiodic Arrays for Ultrawideband Beam Scanning and Full Polarization Reconfiguration Open
In this letter, a multifunction aperture array is proposed for ultrawideband (UWB) scanning and polarization reconfiguration. The UWB array consisted of linearly polarized elements is capable of operating in four polarization modes (+45° l…
View article: Analysis of electromagnetic non-destructive evaluation modelling using Stratton-Chu formulation-based fast algorithm
Analysis of electromagnetic non-destructive evaluation modelling using Stratton-Chu formulation-based fast algorithm Open
The eddy current non-destructive evaluation (NDE) modelling using Stratton-Chu formulation-based fast algorithm is analysed. Stratton-Chu formulations, which have no low frequency breakdown issue, are selected for modelling electromagnetic…
View article: Error Analysis of Higher Order Bivariate Lagrange and Triangular Interpolations in Electromagnetics
Error Analysis of Higher Order Bivariate Lagrange and Triangular Interpolations in Electromagnetics Open
The interpolation errors of the higher order bivariate Lagrange polynomial interpolation based on the rectangular, right and equilateral triangular interpolations are measured by using the maximum and root-mean-square (RMS) errors. The err…
View article: Active Frequency Selective Surface With Wide Reconfigurable Passband
Active Frequency Selective Surface With Wide Reconfigurable Passband Open
This paper presents an active frequency selective surface (AFSS) with a wide reconfigurable passband. The tuning mechanism was investigated with an equivalent circuit which consists of a parallel L-C resonant circuit and a series L-C reson…
View article: An Efficient Multilevel Fast Multipole Algorithm to Solve Volume Integral Equation for Arbitrary Inhomogeneous Bi-Anisotropic Objects
An Efficient Multilevel Fast Multipole Algorithm to Solve Volume Integral Equation for Arbitrary Inhomogeneous Bi-Anisotropic Objects Open
A volume integral equation (VIE) based on the mixed-potential representation is presented to analyze the electromagnetic scattering from objects involving inhomogeneous bi-anisotropic materials. By discretizing the objects using tetrahedro…
View article: On the Volume-Surface Integral Equation for Scattering From Arbitrary Shaped Composite PEC and Inhomogeneous Bi-Isotropic Objects
On the Volume-Surface Integral Equation for Scattering From Arbitrary Shaped Composite PEC and Inhomogeneous Bi-Isotropic Objects Open
A new generalized volume-surface integral equation, volume integral equation-combined field integral equation (VIE-CFIE), is proposed to analyze the electromagnetic (EM) scattering from composite objects comprised of both perfect electric …
View article: Model-assisted probability of detection of flaws in aluminum blocks using polynomial chaos expansions
Model-assisted probability of detection of flaws in aluminum blocks using polynomial chaos expansions Open
Probability of detection (POD) is widely used for measuring reliability of nondestructive testing (NDT) systems. Typically, POD is determined experimentally, while it can be enhanced by utilizing physics-based computational models in combi…
View article: MLFMA-accelerated Nyström method for ultrasonic scattering - Numerical results and experimental validation
MLFMA-accelerated Nyström method for ultrasonic scattering - Numerical results and experimental validation Open
Full wave scattering models for ultrasonic waves are necessary for the accurate prediction of voltage signals received from complex defects/flaws in practical nondestructive evaluation (NDE) measurements. We propose the high-order Nyström …
View article: Modeling of layered anisotropic composite material based on effective medium theory
Modeling of layered anisotropic composite material based on effective medium theory Open
In this paper, we present an efficient method to simulate multilayered anisotropic composite material with effective medium theory. Effective permittivity, permeability and orientation angle for a layered anisotropic composite medium are e…
View article: Full wave modeling of ultrasonic NDE benchmark problems using Nyström method
Full wave modeling of ultrasonic NDE benchmark problems using Nyström method Open
In this paper, we simulate some of the benchmark problems proposed by the World Federation of Nondestructive Evaluation Centers (WFNDEC) using a full wave simulation model based on accurate solutions to the boundary integral equations for …