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Journal articles on the topic 'Generalized Eigen Value Beamforming'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Raj, Kumar Verma* Mrs. Akanksha Awasthi. "EFFICIENCY IMPROVEMENT OF SD PROCESSOR BASED ON CRDC ALGORITHM." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 4 (2017): 368–73. https://doi.org/10.5281/zenodo.556252.

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One such complex algorithm is Singular-value Decomposition (SD) which is an important algorithm with applications in varied domains of signal processing such as direction estimation, spectrum analysis and systems identification. It is a generalized extension to the eigen-decomposition for non-square matrices and is hence of great importance, particularly for subspace based algorithms in signal processing. But SD is known to be a very complicated algorithm with computational complexity ~O (N3) (for a N x N square matrix). For real-time computation of such a complex algorithm the use of a parall

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Bishop, Jordan W., Philip S. Blom, and Jeremy Webster. "Generalized least squares beamforming of infrasound data." Journal of the Acoustical Society of America 155, no. 3_Supplement (2024): A70. http://dx.doi.org/10.1121/10.0026835.

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Generalized least squares (GLS) beamforming is a method for determining the direction of arrival and trace velocity of transient infrasound signals that may be otherwise obscured by persistent, correlated background noise, such as microbaroms. This method complements the adaptive F-detector by using an estimate of the noise background to form a generalized power ratio, which is used to estimate plane wave parameters (trace velocity and back-azimuth). Using a suite of fully synthetic signals, we first investigate the resolving power of the GLS estimator as a function of signal to noise ratio co

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Lee, Jeunghoon, Yongsung Park, and Peter Gerstoft. "Generalized frequency-sum beamforming for low frequencies." Journal of the Acoustical Society of America 156, no. 6 (2024): 4037–47. https://doi.org/10.1121/10.0034621.

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For direction-of-arrival (DOA) estimation in the low-frequency range, we improve spatial resolution using generalized frequency-sum (gFS) beamforming with the Qth order frequency-sum autoproduct. The order Q does not exceed the maximum value, determined by the criteria that the sum of frequencies used to create the autoproduct must be less than the array's spatial Nyquist frequency. Unlike other high-resolution beamformers, gFS maintains stable performance even with a single snapshot and is unaffected by the coherence of steering vectors. Rigorous analysis using the multinomial expansion has s

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Om, Chol Nam, Hyok Kwak, Chong Il Kwak, Song Gum Ho, and Hyon Gyong Jang. "Multichannel Speech Enhancement of Target Speaker Based on Wakeup Word Mask Estimation with Deep Neural Network." International Journal of Advanced Networking and Applications 15, no. 01 (2023): 5754–59. http://dx.doi.org/10.35444/ijana.2023.15101.

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In this paper, we address a multichannel speech enhancement method based on wakeup word mask estimation using Deep Neural Network (DNN). It is thought that the wakeup word is an important clue for target speaker. We use a DNN to estimate the wakeup word mask and noise mask and apply them to separate the mixed wakeup word signal into target speaker’s speech and background noise. Convolutional Recurrent Neural Network (CRNN) is used to exploit both short and long term time-frequency dependencies of sequences such as speech signals. Generalized Eigen Vector (GEV) beamforming estimates the spatial

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Feng, Shuai, Yadan Wang, Chichao Zheng, Zhihui Han, and Hu Peng. "Neighborhood Singular Value Decomposition Filter and Application in Adaptive Beamforming for Coherent Plane-Wave Compounding." Applied Sciences 10, no. 16 (2020): 5595. http://dx.doi.org/10.3390/app10165595.

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Coherent plane-wave compounding (CPWC) is widely used in medical ultrasound imaging, in which plane-waves tilted at multiple angles are used to reconstruct ultrasound images. CPWC helps to achieve a balance between frame rate and image quality. However, the image quality of CPWC is limited due to sidelobes and noise interferences. Filtering techniques and adaptive beamforming methods are commonly used to suppress noise and sidelobes. Here, we propose a neighborhood singular value decomposition (NSVD) filter to obtain high-quality images in CPWC. The NSVD filter is applied to adaptive beamformi

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Wang, Zheng, Yan Jun Li, and Xiao Wei Sun. "Satellite Fault Detection and Isolation through Decoupling Parity Space." Applied Mechanics and Materials 110-116 (October 2011): 4406–14. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4406.

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In order to detect and isolate orbiting satellite actuator faults, a decoupling parity space method was extended. The decoupling parity vector was obtained using this method by singular value decomposition. Sometimes this vector may not exist, then by singular value substitution or generalized Eigen value method was used for solving the optimal approximation. The vector can easily make satellite actuator fault detected and isolated. The simulation results showed the effectiveness of the proposed algorithm.

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7

Kumar, V., and R. Singh. "Response Due To Impulsive Force In Generalized Thermomicrostretch Elastic Solid." International Journal of Applied Mechanics and Engineering 20, no. 3 (2015): 487–502. http://dx.doi.org/10.1515/ijame-2015-0033.

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Abstract A two dimensional Cartesian model of a generalized thermo-microstretch elastic solid subjected to impulsive force has been studied. The eigen value approach is employed after applying the Laplace and Fourier transforms on the field equations for L-S and G-L model of the plain strain problem. The integral transforms have been inverted into physical domain numerically and components of normal displacement, normal force stress, couple stress and microstress have been illustrated graphically.

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Roy, Sourov, and Abhijit Lahiri. "A Study on Fractional Order Thermoelastic Half Space." International Journal of Applied Mechanics and Engineering 25, no. 4 (2020): 191–202. http://dx.doi.org/10.2478/ijame-2020-0058.

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AbstractIn this paper, we consider a one dimensional problem on a fractional order generalized thermoelasticity in half space subjected to an instantaneous heat source. The Laplace transform as well as eigen value approach techniques are applied to solve the governing equations of motion and heat conduction. Closed form solutions for displacement, temperature and stress are obtained and presented graphically.

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9

Ganaie, M. A., Yogesh Kumar, Anshika Bhatia, and Chavda Jayrajsinh. "Ensemble deep generalized eigen-value random vector functional link network for classification problems." Computers and Electrical Engineering 123 (April 2025): 110040. https://doi.org/10.1016/j.compeleceng.2024.110040.

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10

Singh, R., and V. Kumar. "Interaction Due to Mechanical Source in Generalized Thermo Microstretch Elastic Medium." International Journal of Applied Mechanics and Engineering 19, no. 2 (2014): 347–63. http://dx.doi.org/10.2478/ijame-2014-0023.

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Abstract The eigen value approach, following the Laplace and Hankel transformation has been employed to find a general solution of the field equations in a generalized thermo microstretch elastic medium for an axisymmetric problem. An infinite space with the mechanical source has been applied to illustrate the utility of the approach. The integral transformations have been inverted by using a numerical inversion technique to obtain normal displacement, normal force stress, couple stress and microstress in the physical domain. Numerical results are shown graphically

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Wang, Yan, and Zhong Min Wang. "Stability of a Cracked Viscoelastic Plate of Varying Thickness Subjected to Follower Force." Advanced Materials Research 243-249 (May 2011): 298–303. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.298.

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The stability of the cracked visoelastic rectangular plate of varying thickness subjected to uniformly distributed tangential follower force is investigated. Two models describing thickness variation are parabolic and linear variations along one edge of the plate. This is done in order to show how critical loads for cracked visoelastic thin plate subjected to follower force can be obtained using the two-dimensional viscoelastic differential constitutive relation and the thin-plate theory. The differential equations in the Laplace domain are established. The complex eigen-value equations are de

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12

Luo, Han-Wu, Fang Li, Guang Sun, Shi-Gang Cui, and Nan Lin. "Singular Value Decomposition-Based Generalized Side Lobe Canceller Beamforming Method for Ultrasound Imaging." International Journal of Pattern Recognition and Artificial Intelligence 32, no. 07 (2018): 1854017. http://dx.doi.org/10.1142/s0218001418540174.

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In the previous studies, eigenspace-based minimum variance (ESBMV) algorithms were proposed, however, the quality of the algorithm will degrade in low signal to noise occasions. In this study, a singular value decomposition generalized side lobe canceller (SVD-GSC) beamforming method based on the GSC is proposed. The sample covariance matrix is eigendecomposed, and a kind of further SVD is introduced to establish the noise space and the signal space, respectively. After that, the weighting vectors acquired by GSC are projected into the left singular space of the desired signal space. The perfo

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Singh, R., and V. Kumar. "Eigen value approach to two dimensional problem in generalized magneto micropolar thermoelastic medium with rotation effect." International Journal of Applied Mechanics and Engineering 21, no. 1 (2016): 205–19. http://dx.doi.org/10.1515/ijame-2016-0013.

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Abstract In this study an eigen value approach has been employed to examine the mechanical force applied along with a transverse magnetic field in a two dimensional generalized magneto micropolar thermoelastic infinite space. Results have been obtained by treating rotational velocity to be invariant. Integral transforms have been applied to solve the system of partial differential equations. Components of displacement, normal stress, tangential couple stress, temperature distribution, electric field and magnetic field have been obtained in the transformed domain. Finally numerical inversion te

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14

Chakraborty, S. "Eigen Value Approach to Generalized Thermoelastic Interactions in an Unbounded Body with Circular Cylindrical Cavity without Energy Dissipation." International Journal of Applied Mechanics and Engineering 22, no. 4 (2017): 811–25. http://dx.doi.org/10.1515/ijame-2017-0053.

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Abstract The theory of generalized thermoelasticity in the context of the Green-Naghdi model -II (thermoelasticity without energy dissipation) is studied for an infinite circular cylindrical cavity subjected to two different cases of thermoelastic interactions when the radial stress is zero for (a) maintaining constant temperature and (b) temperature is varying exponentially with time. The Laplace transform from time variable is used to the governing equations to formulate a vector matrix differential equation which is then solved by the eigen value approach. Numerical computations for the dis

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15

Li, You Tang, and Huai Qing Li. "Analysis of Stress Singularity near the Tip of Artificial Crack." Key Engineering Materials 525-526 (November 2012): 445–48. http://dx.doi.org/10.4028/www.scientific.net/kem.525-526.445.

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A generalized expression of the stress-singularity function at the tip of artificial crack is proposed, and a formula to calculate the stress intensity factor of artificial crack is obtained in the paper. The solutions of stress singularity of a cracked bi-materials beam under uniform tension and bending were computed. The results show that the degree of stress-singularity is determined by the exponent λ at the tip of artificial crack, and the exponent λ is, not only determined by materials parameter of artificial crack but also by angle. Key words: artificial crack; bi-material; stress singul

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16

EDİZ, Süleyman. "On Vertex-Edge Degree Based Properties of Sierpinski Graphs." Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi 6, no. 1 (2023): 151–60. http://dx.doi.org/10.47495/okufbed.1099362.

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Network science and graph theory are two important branches of mathematics and computer science. Many problems in engineering and physics are modeled with networks and graphs. Topological analysis of networks enable researchers to analyse networks in relation some physical and engineering properties without conducting expensive experimental studies. Topological indices are numerical descriptors which defined by using degree, distance and eigen-value notions in any graph. Most of the topological indices are defined as by using classical degree concept in graph theory, network and computer scien

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17

Hobiny, Aatef, Faris S. Alzahrani, and Ibrahim Abbas. "Three-phase lag model of thermo-elastic interaction in a 2D porous material due to pulse heat flux." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 12 (2020): 5191–207. http://dx.doi.org/10.1108/hff-03-2020-0122.

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Purpose The purposes of this study, a generalized model for thermoelastic wave under three-phase lag (TPL) model is used to compute the increment of temperature, the components of displacement, the changes in volume fraction field and the stress components in a two-dimension porous medium. Design/methodology/approach By using Laplace-Fourier transformations with the eigen values methodologies, the analytical solutions of all physical variables are obtained. Findings The derived methods are estimated with numerical outcomes which are applied to the porous media in simplified geometry. Originali

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18

Baksi, Arup, Rasajit Kumar Bera, and L. Debnath. "Eigen value approach to study the effect of rotation and relaxation time in two dimensional problems of generalized thermoelasticity." International Journal of Engineering Science 42, no. 15-16 (2004): 1573–85. http://dx.doi.org/10.1016/j.ijengsci.2004.03.003.

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19

Zhao, Tieyu, and Yingying Chi. "Key Validity Using the Multiple-Parameter Fractional Fourier Transform for Image Encryption." Symmetry 13, no. 10 (2021): 1803. http://dx.doi.org/10.3390/sym13101803.

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As a symmetric encryption algorithm, multiple-parameter fractional Fourier transform (MPFRFT) is proposed and applied to image encryption. The MPFRFT with two vector parameters has better security, which becomes the main technical means to protect information security. However, our study found that many keys of the MPFRFT are invalid, which greatly reduces its security. In this paper, we propose a new reformulation of MPFRFT and analyze it using eigen-decomposition-type fractional Fourier transform (FRFT) and weighted-type FRFT as basis functions, respectively. The results show that the effect

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20

Khulief, Yehia A., Mohamed A. El-Gebeily, Wasiu A. Oke, and Wael H. Ahmed. "Modal frequencies of fiber-reinforced polymer pipes with wall-thinning using a wavelet-based finite element model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 13 (2014): 2377–86. http://dx.doi.org/10.1177/0954406214559592.

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Wall-thinning due to chemical reactions, heat, erosion, or a combination of such influences is the most dominant type of internal surface damage in piping systems. In order to examine the effect of wall-thinning on the natural frequencies, the elastodynamic model of the fiber-reinforced polymer pipe is formulated using a wavelet-based finite element method. In this context, a new set of Hermite shape functions is developed. The generalized eigen value problem is solved and the natural frequencies are obtained for an fiber-reinforced polymer pipe with different depths and locations of the wall-

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21

Pauly, Dirk. "On polynomial and exponential decay of eigen-solutions to exterior boundary value problems for the generalized time-harmonic Maxwell system." Asymptotic Analysis 79, no. 1-2 (2012): 133–60. http://dx.doi.org/10.3233/asy-2012-1100.

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22

Rani, Leena, and Sushant Shekhar. "Response of ramp-type heating in a monoclinic generalized thermoelastic material." Multidiscipline Modeling in Materials and Structures 16, no. 6 (2020): 1373–84. http://dx.doi.org/10.1108/mmms-12-2019-0214.

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PurposeThe two-dimensional deformation of a homogeneous, thermally conducting, monoclinic material has been studied by using Laplace and Fourier transforms technique. A linear temperature ramping function is used to more realistically model: thermal loading of the half-space surface. The general solution obtained is applied to a specific problem of a half-space subjected to ramp-type heating and loading. The displacements, stresses and temperature distribution so obtained in the physical domain are computed numerically and illustrated graphically. The comparison for Lord-Shulman (L-S), Green a

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Zheng, Mei-yan, Ke-song Chen, Hong-gang Wu, and Xian-pan Liu. "Sparse Planar Array Synthesis Using Matrix Enhancement and Matrix Pencil." International Journal of Antennas and Propagation 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/147097.

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The matrix enhancement and matrix pencil (MEMP) plays important roles in modern signal processing applications. In this paper, MEMP is applied to attack the problem of two-dimensional sparse array synthesis. Firstly, the desired array radiation pattern, as the original pattern for approximating, is sampled to form an enhanced matrix. After performing the singular value decomposition (SVD) and discarding the insignificant singular values according to the prior approximate error, the minimum number of elements can be obtained. Secondly, in order to obtain the eigenvalues, the generalized eigen-d

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Rohmah, Iftitahur, Mohammad Nafie Jauhari, and Erna Herawati. "Energi Detour pada Graf Invers dari Grup Quaternion Diperumum." Jurnal Riset Mahasiswa Matematika 4, no. 3 (2025): 110–17. https://doi.org/10.18860/jrmm.v4i2.30060.

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A generalized quaternion group is a non-abelian group with a order constructed from the two elements that is denoted by defined as where the is the identity, . The inverse graph of a group is a graph which the vertices set are all elements of a finite group and two distinct vertices and are adjacent if and only if either or . Graph energy, especially detour energy, is an important aspect in graph theory that describes network stability and resistance. The method used in this research is a qualitative method. This study aims to determine the formula of the detour energy in the inverse graph of

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Ovchinnikov, V. F., D. V. Kapitanov, and E. G. Glazova. "INFLUENCE OF EXTERNAL CUBIC VISCOSITY ON THE DYNAMICS OF A CANTILEVER ROD LOADED WITH A TRACKING FORCE." Problems of Strength and Plasticity 86, no. 1 (2024): 83–93. http://dx.doi.org/10.32326/1814-9146-2024-86-1-83-93.

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The analysis of the influence of external nonlinear cubic viscosity on the behavior of a cantilever rod loaded with a compressive tracking force is performed. The Bernoulli – Euler beam model is used for the describing of the rod bending deformations. After the transition to dimensionless variables, we obtained the form of notation in which the coefficients of the equation do not depend on the coefficient of cubic viscous friction. This indicates the independence of the critical load and system frequency characteristics from the level of nonlinear attenuation. Using the standard procedure of t

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Gordin, V. A. "COMPACT FINITE-DIFFERENCE SCHEMES FOR WEAKLY NON-LINEAR PROBLEMS AND BOUNDARY CONDITIONS IMITATING CAUCHY PROBLEM." XXII workshop of the Council of nonlinear dynamics of the Russian Academy of Sciences 47, no. 1 (2019): 32–37. http://dx.doi.org/10.29006/1564-2291.jor-2019.47(1).9.

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Compact finite-difference schemes are well known and provide high accuracy order for differential equation with constant coefficients. Algorithms for constructing compact schemes of the 4-th order for boundary value problems with variable (smooth or jump) coefficient are developed. For the diffusion equations with a smooth variable coefficient and the Levin – Leontovich equation, compact finite-difference schemes are also constructed and their 4-th order is experimentally confirmed. The method of constructing compact schemes of the 4-th order can be generalized to partial differential equation

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Al-Masri, Rund, and Hayder A. Rasheed. "Analytical and Finite Element Buckling Solutions of Fixed–Fixed Anisotropic Laminated Composite Columns Under Axial Compression." International Journal of Structural Stability and Dynamics 17, no. 09 (2017): 1750103. http://dx.doi.org/10.1142/s0219455417501036.

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A generalized analytical formula is developed to predict buckling of anisotropic laminated composite fixed–fixed thin columns by using the Rayleigh–Ritz displacement field approximation. Based on the generalized constitutive relationship, the effective extensional, coupling and flexural stiffness coefficients of the anisotropic layup are determined using dimensional reduction by static condensation of the 6[Formula: see text][Formula: see text][Formula: see text]6 composite stiffness matrix. The resulting explicit formula is expressed in terms of the flexural stiffness since the coupling and e

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Dey, Sudip, and Amit Karmakar. "Effect of Location of Delamination on Free Vibration of Cross-Ply Conical Shells." Shock and Vibration 19, no. 4 (2012): 679–92. http://dx.doi.org/10.1155/2012/726986.

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Location of delamination is a triggering parameter for structural instability of laminated composites. In this paper, a finite element method is employed to determine the effects of location of delamination on free vibration characteristics of graphite-epoxy cross-ply composite pre-twisted shallow conical shells. The generalized dynamic equilibrium equation is derived from Lagrange's equation of motion neglecting Coriolis effect for moderate rotational speeds. The formulation is exercised by using an eight noded isoparametric plate bending element based on Mindlin's theory. Multi-point constra

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Bijarania, Subhash, Anil Pandey, Mainak Barman, Monika Shahani, and Gharsi Ram. "Assesment of divergence among soybean [Glycine max (L.) Merrill] genotypes based on phenological and physiological traits." Environment Conservation Journal 23, no. 1&2 (2022): 72–82. http://dx.doi.org/10.36953/ecj.021808-2117.

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A study was conducted to understand genetic divergence in Randomized complete block design accommodating 30 soybean [Glycine max (L.) Merrill] genotypes randomly in three replications. These genotypes were evaluated for twenty-seven traits: five phenological, nine agro-morphological, eight physiological traits (from field-trial) and five physiological traits (from laboratory experiment) recorded and subjected to PCA (Principal Component Analysis) and cluster analysis. Among all the studied cultivars, significant diversity, as well as analysis of dispersion, was recorded for different agro-morp

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Zhu, Qixuan, Chao Sun, and Mingyang Li. "Multifrequency matched-field source localization based on Wasserstein metric for probability measures." Journal of the Acoustical Society of America 154, no. 5 (2023): 3062–77. http://dx.doi.org/10.1121/10.0022374.

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Matched-field processing (MFP) for underwater source localization serves as a generalized beamforming approach that assesses the correlation between the received array data and a dictionary of replica vectors. In this study, the processing scheme of MFP is reformulated by computing a statistical metric between two Gaussian probability measures with the cross-spectral density matrices (CSDMs). To achieve this, the Wasserstein metric, a widely used notion of metric in the space of probability measures, is employed for developing the processor to attach the intrinsic properties of CSDMs, expressi

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Hanchate, Seema M., and Shikha Nema. "ISSOR Signal Detection for Energy Efficient and Low Complexity Large Scale MIMO System." International Journal of Engineering and Advanced Technology 9, no. 1s5 (2019): 327–34. http://dx.doi.org/10.35940/ijeat.a1381.1291s519.

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Scalable version of multiuser MIMO called Large-scale MIMO is a one of the powerful technology in future wireless communication systems in which huge amount of BS (base station) antennas utilized to process multiple user equipment. Energy consumed is high with more antennas and also it leads to increase the signal detection complexity and overall circuit power consumption. Designing energy efficient and low complexity MIMO system is considered as a challenging issue. This paper presents the ISSOR signal detection for energy efficient and low complexity large scale MIMO system. VA-GSM (Variable

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Wung, Ernest Alang, Joslanie Douanla Tameko, and Muhamadu Awal Kindzeka Wirajing. "The curse of dependency: Examining structural change in African economies." Forum for Economic and Financial Studies 3, no. 1 (2025): 2269. https://doi.org/10.59400/fefs2269.

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This study investigates the effect of external dependency on structural change in 54 African countries between 1990 and 2021. The Two-Step System Generalized Method of Moments strategy is adopted to control for potential endogeneity problems. Findings reveal that structural change in Africa is strongly impaired by the level of external dependency. This is since all proxies of external dependency are negatively and statistically significant with all structural change proxies. For instance, under agricultural productivity, external debts stocks (EDS) give an eigen value (β) of 0.879, standard co

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Li, Yousheng, and Guitao Xia. "Multioperator Algorithm-Based Ultrasound Imaging Combined with Hysteroscopy for the Diagnosis of Endometrial Polyps." Scientific Programming 2021 (August 4, 2021): 1–9. http://dx.doi.org/10.1155/2021/1808665.

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This study aimed to explore the diagnosis of endometrial polyps (EMP) by ultrasound imaging based on multi-operator algorithms combined with hysteroscopy. This study is the first to investigate the resolution of the ultrasound adaptive beamforming algorithm (MOAD), after which the proposed algorithm was applied to ultrasound diagnosis of 102 patients with EMP and pathologically diagnosed with vaginal irregular bleeding, and the evaluation efficacy of the MOAD algorithm based on EMP was compared. The resolution of the MOAD-based imaging algorithm (0.0645) was significantly lower than that of th

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Mampi Saha. "On Fractional Epidemic Model Order Shigella." Communications on Applied Nonlinear Analysis 32, no. 9s (2025): 2478–86. https://doi.org/10.52783/cana.v32.4541.

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Introduction: We have adapted the continuous mathematical framework developed to examine the dynamics of a Shigella epidemic at a constant recruitment rate. They divided the population into seven groups in their model: susceptible (S), vaccination(V), exposé(E), infected (I), isolated (G), hospitalized(H) and recovered (R), each with its own set of parameters. We examined a mathematical model of a Shigella outbreak in a community with a constant population using the SVEIGHR compartmental nonlinear deterministic approach. The model was subjected to analytical investigations utilizing the linear

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Shlyakhin, D. A., and M. A. Kalmova. "The nonstationary thermoelectric elasticity problem for a long piezoceramic cylinder." PNRPU Mechanics Bulletin, no. 2 (December 15, 2021): 181–90. http://dx.doi.org/10.15593/perm.mech/2021.2.16.

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А new closed-loop solution for the coupled nonstationary problem of thermoelectric elasticity is designed for a long piezoceramic radially polarized cylinder. The case of the nonstationary load acting on its inner cylindrical surface is considered as a function of temperature change at a given law of the convection heat exchange on the outer face wall (boundary conditions of heat conductivity of the 1st and 3rd types). Electrodynamic cylinder surfaces are connected to a measuring device with a high input resistance (electric idling). We investigate the problem where the rate of the temperature

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Antonovskaya, Galina, Yana Konechnaya, Natalya Vaganova, and Alexey Morozov. "ARKHANGELSK REGION." Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia], no. 22 (November 12, 2019): 247–55. http://dx.doi.org/10.35540/1818-6254.2019.22.22.

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An overview of regional seismicity registered by the Arkhangelsk seismic network is presented. In 2013 the Arkhangelsk seismic network included 9 digital seismic stations (ARH, KRR, PRG, TMC, PRO, LASH, SLV, AMD, and ZFI/ZFI2). A large number of technogenic events were recorded by the Arkhangelsk network in the north of the East European Platform (Arkhangelsk Region). Only 2 earthquakes were registered during the entire observation period: on October 22, 2005, at 17h46m with ML=2.9, and on March 28, 2013, at 07h02m with ML=3.4. The parameters of the hypocenter of the March 28, 2013 earthquake

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-, Sri Naren Chandra Boro. "Linear Algebra :Eigen Value and Eigen Vectors and Their Applications." International Journal For Multidisciplinary Research 6, no. 5 (2024). http://dx.doi.org/10.36948/ijfmr.2024.v06i05.27697.

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Abstract: Linear algebra is the branch of mathematics that concerned with the study of vectors,vector spaces(linear spaces), linear maps(linear transformations') and system of linear equations. Linear space is the central theme in modern mathematics that is widely used in both abstract algebra and functional analysis.Linear algebra also has a concrete representation in analytical geometry and in generalized operator theory. It has extensive applications in natural sciences as well as social sciences. Here in this paper we are presenting a study on linear algebra and associated linear equations

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Ituen., B. Okon, and Popoola Oyebola. "Bound- State Solution of Schrodinger Equation with Hulthen Plus Generalized Exponential Coulomb Potential Using NIKIFOROV-UVAROV Method." August 31, 2015. https://doi.org/10.14810/ijrap.2015.4301.

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We apply an approximation to centrifugal term to find bound state solutions to Schrodinger equation with Hulthen Plus generalized exponential Coulomb potential Using Nikiforov-Uvarov Method. Using this method, we obtained the energy-eigen value and the total wave function. We implement C++ algorithm, to obtained the numerical values of the energy for different quantum state starting from the first excited state for different values of the screening parameter.

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Xu, Yang, and Y. Jay Guo. "Compact generalized joined coupler matrix with orthogonal beams." Electronics Letters 61, no. 1 (2025). https://doi.org/10.1049/ell2.70157.

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AbstractAn analogue beamforming network, such as the Butler matrix can produce orthogonal beams, the peak of each beam being aligned with the nulls of all other beams. This is particularly important in scenarios requiring interference resilience in systems like base stations and user equipment. This paper presents a 3 × 5 Nolen‐like generalized joined coupler (GJC) matrix to produce orthogonal beams with both compact size and flexibility. The phase shifters are integrated into couplers while the coupling value range of couplers are extended to achieve the required performance of the GJC matrix

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Wu, Wei-Chiang. "Prefiltering-based reduced rank multiuser detection in uplink generalized spatial modulation massive MIMO system." EURASIP Journal on Advances in Signal Processing 2023, no. 1 (2023). http://dx.doi.org/10.1186/s13634-023-01048-5.

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AbstractExploiting generalized spatial modulation in massive MIMO system, we develop an efficient uplink multiuser detection scheme. Different from the maximum likelihood detection algorithm, the spatial and temporal data in the proposed detection scheme are decoded in a sequential manner: At the front end of base station receiver, a bank of spatial filters is first employed to mitigate the multiuser interference using the benefits of large-scale antenna array. There then, a reduced rank generalized Eigen-value decomposition-based algorithm is proposed to identify the antennas activated at eac

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Yang, Zeqi, Fuyong Wang, Wanting Peng, et al. "Adaptive complementary neighboring sub‐aperture beamforming for thermoacoustic imaging." Medical Physics, August 2024. http://dx.doi.org/10.1002/mp.17339.

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AbstractBackgroundWhen applied to thermoacoustic imaging (TAI), the delay‐and‐sum (DAS) algorithm produces strong sidelobes due to its disadvantages of uniform aperture weighting. As a result, the quality of TAI images recovered by DAS is often severely degraded by strong non‐coherent clutter, which restricts the development and application of TAI.PurposeTo address this issue, we propose an adaptive complementary neighboring sub‐aperture (NSA) beamforming algorithm for TAI.MethodsIn NSA, we introduce a coordinate system transformation when calculating the normalized cross‐correlation (NCC) mat

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"GEVD Based on Multichannel Wiener Filter for Removal of EEG Artifacts." VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE 8, no. 10 (2019): 2417–21. http://dx.doi.org/10.35940/ijitee.h6755.0881019.

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The electroencephalography (EEG) signals are contaminated by ocular artifacts usually called as ElectroOculoGraphy(EOG) artifacts. This occurs due to an eye movement and repeatedly blinking eyes, it is a major barrier to overcome when analyzing ElectroEncephaloGram (EEG) data. In this paper, Generalized Eigen Value Decomposition (GEVD) algorithm based on Multichannel Wiener filter (MWF) was proposed. In the GEVD algorithm, the covariance matrix of the artifact is identified and substituted by low rank approximation. For both real and hybrid EEG data is demonstrated using this algorithm and als

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Chakraborty, S., A. Lahiri, and B. Das. "Eigen value approach with memory dependant derivative on homogeneous isotropic infinitely extended rotating plate of a finite thickness in absence of heat source." Journal of Engineering and Thermal Sciences, November 3, 2022. http://dx.doi.org/10.21595/jets.2022.22733.

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Our present manuscript is an attempt to derive a model of generalized thermoelasticity with dual phase lag heat conduction by using the methodology of memory dependent derivative for a isotropic rotating plate subject to the prescribed boundary conditions with constant magnetic and electric intensities. Two integral transform such as Laplace transform for time variable and Fourier transform for space variable are employed to the governing equations to formulate vector-matrix differential equation which is then solved by eigenvalue approach methodology. The inversion of two integral transformat

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Wang, Jinlong, Gang Wang, Guanyi Chen, Bo Li, Ruofei Zhou, and Ruoyu Zhang. "Design and optimization for UAV-enabled two-way relaying system with SWIPT." EURASIP Journal on Wireless Communications and Networking 2020, no. 1 (2020). http://dx.doi.org/10.1186/s13638-020-01813-2.

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Abstract In this paper, we investigate the resource allocation scheme for an unmanned-aerial-vehicle-enable (UAV-enabled) two-way relaying system with simultaneous wireless information and power transfer (SWIPT), where two user equipment exchange information with the help of UAV relay and harvest energy through power splitting (PS) scheme. Under the transmission power constraints at UEs and UAV relay, a non-convex intractable optimization problem is formulated which maximizes the sum retained energy of two UEs while satisfying the minimum signal-to-noise ratio requirement. We decouple the comp

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Park, Hong Soo, and Sun K. Hong. "A performance predictor of beamforming versus time-reversal based far-field wireless power transfer from linear array." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-02244-9.

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AbstractFor far-field wireless power transfer (WPT) in a complex propagation environment, a time-reversal (TR) based WPT that can overcome the drawbacks of conventional beamforming (BF) by taking advantage of multipath has been recently proposed. However, due to the WPT performance of BF and TR depending on the complexity of the propagation environment, the performance prediction between BF versus TR would be required. We present a detailed and generalized analysis of the recently proposed performance metric referred to as the peak received power ratio (PRPR) for linear array-based WPT. Here,

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Wang, Yue, Timothy W. Randolph, Ali Shojaie, and Jing Ma. "The Generalized Matrix Decomposition Biplot and Its Application to Microbiome Data." mSystems 4, no. 6 (2019). http://dx.doi.org/10.1128/msystems.00504-19.

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ABSTRACT Exploratory analysis of human microbiome data is often based on dimension-reduced graphical displays derived from similarities based on non-Euclidean distances, such as UniFrac or Bray-Curtis. However, a display of this type, often referred to as the principal-coordinate analysis (PCoA) plot, does not reveal which taxa are related to the observed clustering because the configuration of samples is not based on a coordinate system in which both the samples and variables can be represented. The reason is that the PCoA plot is based on the eigen-decomposition of a similarity matrix and no

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Guo, Zengwei, Haobo Shi, Huafeng Gong, Tao Ma, and Xiaoming Huang. "Statistical characteristics of modal damping of long-span suspension bridge at different wind speeds." Journal of Vibration and Control, January 2, 2023, 107754632211490. http://dx.doi.org/10.1177/10775463221149071.

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The present paper combined the natural environment excitation technology (NExT) with the eigen system realization algorithm (ERA) to identify the modal parameters of a suspension bridge. Firstly, the critical parameters in NExt–ERA, such as record length, window length, and ranks of the Hankel matrix, and their influence on identification accuracy have been discussed. Subsequently, based on the acceleration series obtained from the Xihoumen Bridge Health Monitoring System, 3015 sets of modal frequencies and modal damping ratios of the Xihoumen Bridge were identified under 7 sets of wind speeds

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PATIL, PRAMOD, ALKA LONDHE, and PARAG KULKARNI. "LEARNING HYPERPLANES THAT CAPTURES THE GEOMETRIC STRUCTURE OF CLASS REGIONS." Graduate Research in Engineering and Technology, July 2013, 7–12. http://dx.doi.org/10.47893/gret.2013.1003.

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Most of the decision tree algorithms rely on impurity measures to evaluate the goodness of hyperplanes at each node while learning a decision tree in a top-down fashion. These impurity measures are not differentiable with relation to the hyperplane parameters. Therefore the algorithms for decision tree learning using impurity measures need to use some search techniques for finding the best hyperplane at every node. These impurity measures don’t properly capture the geometric structures of the data. In this paper a Two-Class algorithm for learning oblique decision trees is proposed. Aggravated

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PATIL, PRAMOD, ALKA LONDHE, and PARAG KULKARNI. "LEARNING HYPERPLANES THAT CAPTURES THE GEOMETRIC STRUCTURE OF CLASS REGIONS." Graduate Research in Engineering and Technology, July 2013, 7–12. http://dx.doi.org/10.47893/gret.2013.1003.

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Most of the decision tree algorithms rely on impurity measures to evaluate the goodness of hyperplanes at each node while learning a decision tree in a top-down fashion. These impurity measures are not differentiable with relation to the hyperplane parameters. Therefore the algorithms for decision tree learning using impurity measures need to use some search techniques for finding the best hyperplane at every node. These impurity measures don’t properly capture the geometric structures of the data. In this paper a Two-Class algorithm for learning oblique decision trees is proposed. Aggravated

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"ISSOR Signal Detection for Energy Efficient and Low Complexity Large Scale MIMO System." International Journal of Engineering and Advanced Technology 9, no. 1S5 (2019): 327–34. http://dx.doi.org/10.35940/ijeat.a1381.1291s52019.

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Scalable version of multiuser MIMO called Large-scale MIMO is a one of the powerful technology in future wireless communication systems in which huge amount of BS (base station) antennas utilized to process multiple user equipment. Energy consumed is high with more antennas and also it leads to increase the signal detection complexity and overall circuit power consumption. Designing energy efficient and low complexity MIMO system is considered as a challenging issue. This paper presents the ISSOR signal detection for energy efficient and low complexity large scale MIMO system. VA-GSM (Variable

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