Production Analysis for Fractured Vertical Well in Coal Seam Reservoirs with Stimulated Reservoir Volume by Chen Li

“…Based on the dual-porosity flowing mechanism, combined with the Langmuir adsorb equation, Fick diffusion law, and Darcy law, a mathematical model considering diffusion in matrix and transport in natural fracture system is established, using spherical matrix to describe the transient steady-state sorption, and using cubic matrix to describe the pseudosteady-state sorption. …”
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Modeling the dynamics of two-factor socio-economic states through mappings close to extension by V. V. Egorov

“…A feature of the proposed approach is the use of a matrix of marginal values included in the study that make up the Jacobi matrix of noted factors. …”
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Achieving Synchronization in Arrays of Coupled Differential Systems with Time-Varying Couplings by Xinlei Yi, Wenlian Lu, Tianping Chen

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The Cardinal Spline Methods for the Numerical Solution of Nonlinear Integral Equations by Xiaoyan Liu, Jin Xie, Zhi Liu, Jiahuan Huang

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Comparative Simulation Study on Synchronous Generators Sudden Short Circuits by Lucian Lupşa-Tătaru

“…The time consuming matrix numerical inversion at each step of integration, usually performed when selecting currents as state variables, is eliminated by advancing the process models in a convenient split matrix form that allows the symbolic processing. …”
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Peculiarities of Charge Transfer in SiO2(Ni)/Si Nanosystems by Egor Yu. Kaniukov, Dzmitry V. Yakimchuk, Victoria D. Bundyukova, Alena E. Shumskaya, Abdulkarim A. Amirov, Sergey E. Demyanov

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An Integrated Use of Topography with RSI in Gully Mapping, Shandong Peninsula, China by Fuhong He, Tao Wang, Lijuan Gu, Tao Li, Weiguo Jiang, Hongbo Shao

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The Exact Distribution of the Condition Number of Complex Random Matrices by Lin Shi, Taibin Gan, Hong Zhu, Xianming Gu

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Prediksi Kelulusan Tepat Waktu Berdasarkan Riwayat Akademik Menggunakan Metode K-Nearest Neighbor by Imam Riadi, Rusydi Umar, Rio Anggara

“…Hasil pengujian akurasi prediksi penelitian menggunakan confusion matrix menghasilkan akurasi paling besar sesuai target yaitu mencapai 78% menggunakan objek penelitian sebanyak 93 data mahasiswa terdiri dari 78 training dan 12 data testing. …”
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Coastal Sceneries of Albania, An Emerging 3S Destination: Analysis of Physical Characteristics and Human Activity Impacts by Alfredo Fernández Enríquez, Alexis Mooser, Giorgio Anfuso, Javier García-Onetti

“…Based on the evaluation of 26 physical/human parameters and using weighting matrix parameters and fuzzy logic mathematics, the technique enables one to obtain an Evaluation Index (D) that allows one to classify each investigated site into five scenic classes, from Class I (extremely attractive natural sites; D ≥ 0.85) to Class V (very unattractive developed urban/industrial sites; D < 0.00). …”
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Investigation of the matematical model of the multimensional automatic control system with delays by Jonas Rimas

“…The precise analytical expressions of the elements of the step responses matrix of the system are obtained. …”
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Percentage of consanguinity in Murrah buffalos in the Zulia state of Venezuela by José Raúl Pérez-González, Néstor Simón Montiel-Urdaneta

“…F coefficients were estimated by the tabular method, whichuses the parentage matrix (Matrix A) coefficients to calculate consanguinity. …”
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Joint approximate diagonalization technique for modal identification of the Donghai Bridge by Ben Li, Lin Chen, Satish Nagarajaiah, Limin Sun

“…At the core of these methods is the matrix joint approximate diagonalization (JAD) technique, while their efficiency and accuracy are largely determined by how the target-matrices for JAD are constructed from multi-channel structural responses. …”
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Trends and opportunities in renewable energy investment in Saudi Arabia: Insights for achieving vision 2030 and enhancing environmental sustainability by Mahmoud Mohamed Selim, Nasser Alshareef

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Triangular Function Method is Adopted to Solve Nonlinear Stochastic It o^–Volterra Integral Equations by Guo Jiang, Dan Chen, Fugang Liu

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On the solvability of a system of wave and beam equations by Juha Berkovits

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Modeling and Vibration Analysis of a 3-UPU Parallel Vibration Isolation Platform with Linear Motors Based on MS-DT-TMM by Wei Chen, Jiaqi Tong, Hehe Yang, Fulong Liu, Zhen Qin, Zhiyong Ren

“…Firstly, the dynamical mathematical model of this vibration isolator is innovatively established and solved by using the discrete-time transfer matrix method of the multibody system (MS-DT-TMM). …”
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On the Total Electronic Density of States of Disordered Solids by M. A. Grado-Caffaro, M. Grado-Caffaro

“…The concept of total electronic density of states calculated for small clusters in amorphous solids is presented in a new way by using a mathematical formulation based upon matrix calculus. …”
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Noise Source Identification Method for a Carpet Tufting Machine Based on CEEMDAN-AIC by Wang Haohui, Sheng Xiaowei, Xu Yang

“…Then, singular value decomposition (SVD) is performed on the covariance matrix of the IMF matrix to obtain the eigenvalue. …”
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Multiobjective Optimization Design and Performance Prediction of Centrifugal Pump Based on Orthogonal Test by Yuqin Wang, Xinwang Huo

“…The weight of each test factor on the optimization index was calculated by weight matrix, and a set of optimal schemes was obtained. …”
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