MODELS FOR DETERMINING MAXIMUM DEGREE FILLING CHANNELS OF CIRCULAR SECTION SHAPE by A. K. Alibekov, G. A. Аlibekov

“…Objectives The task was to obtain a model for determining the maximum possible degree of filling the circular section channels in the earthen channel based on the condition of ensuring the stability of slopes and the minimum volume of excavation during their construction, as well as finding the optimum degree of filling fortified channels of a closed profile corresponding to maximum throughput.Method In work analytical methods of differential calculus and the solution of implicit equations are used.Result The experience of domestic and foreign researchers was taken into account to solve the set tasks, select research methods and criteria for optimizing channel parameters. …”
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A Sensitivity Analysis of the Modeling of Polycyclic Aromatic Hydrocarbon Emission in Galaxies by A. Maragkoudakis, C. Boersma, P. Temi, J. D. Bregman, L. J. Allamandola, V. J. Esposito, A. Ricca, E. Peeters

“…We have conducted a sensitivity analysis on the mid-infrared spectral decomposition of galaxies and the modeling of the polycyclic aromatic hydrocarbon (PAH) emission spectrum with the NASA Ames PAH Infrared Spectroscopic Database (PAHdb) to assess the variance on the average galaxy PAH population properties under a grid of different modeling parameters. We find that the short-low and short-low+long-low Spitzer-IRS decomposition with PAHFIT provides consistent modeling and recovery of the 5–15 μ m PAH emission spectrum. …”
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Improving quantum metrology protocols with programmable photonic circuits by de las Heras Alberto Muñoz, Porras Diego, González-Tudela Alejandro

“…Photonic quantum metrology enables the measurement of physical parameters with precision surpassing classical limits by using quantum states of light. …”
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Supermassive Black Hole Spin Constraints from Polarimetry in an Equatorial Disk Model by Daniel C. M. Palumbo

“…Using a grid search over model parameters, we find a strong dependence of the resulting spin constraint on plasma properties near the horizon. …”
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DIGITAL FILTERS IMPLEMENTATION IN MICROPROCESSOR-BASED RELAY PROTECTION by Yu. V. Rumiantsev, F. A. Romaniuk, V. Yu. Rumiantsev, I. V. Novash

“…The increasing of the signal magnitude settling time in this case can be reduced by choosing the most optimal parameters of the all components of the current measuring element.…”
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Communication Link Analysis of a Low-Earth Orbit Satellites Considering Interference Sources Moving Along Various Parabola-Curved Paths by Hyunmu Kang, Eunjung Kang, Hosung Choo

“…To investigate critical interference situations where the <i>J</i>/<i>S</i> ratio is maintained above −20 dB with a small deviation during the communication time, we investigate interference situations by changing the parameters of the interference source path. The genetic algorithm (GA) is used to easily find an airborne interference source path that maintains the <i>J</i>/<i>S</i> ratio above −20 dB with a small deviation. …”
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The structural properties of a compound formed by pyrocatechines and iron by i. KARA, R. MAMMADOV, Y. KARA, A. ÖZTÜRK KİRAZ, M. TURAN

“…In this study, the structural properties of a compound formed by pyrocatechines and iron is investigated theoretically.The optimized geometric parameters (bond lengths, bond and dihedral angles), conformational analysis, normal mode frequencies and corresponding vibrational assignments of the compound are theoretically examined by means of B3LYP hybrid density functional theory (DFT) method together with 6-31+g(d,p) and Cep-121g basis sets. …”
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The structural properties of a compound formed by pyrocatechines and iron by İ. KARA, R. MAMMADOV, Y. KARA, A. ÖZTÜRK KİRAZ, M. TURAN

“…In this study, the structural properties of a compound formed by pyrocatechines and iron is investigated theoretically.The optimized geometric parameters (bond lengths, bond and dihedral angles), conformational analysis, normal mode frequencies and corresponding vibrational assignments of the compound are theoretically examined by means of B3LYP hybrid density functional theory (DFT) method together with 6-31+g(d,p) and Cep-121g basis sets. …”
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A Maximum Likelihood Calibration of the Tip of the Red Giant Branch Luminosity from High Latitude Field Giants Using Gaia Early Data Release 3 Parallaxes by Siyang Li, Stefano Casertano, Adam G. Riess

“…We adopt simple parameterizations for the Milky Way stellar luminosity function and density law and optimize the likelihood of the observed sample as a function of those parameters. …”
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Generalized Heptagonal Membership Function for Fully Fuzzy Linear Fractional Programming Problems by Israa Hadi, Iden H. Al Kanani

“…On the other hand, we develop the algorithm of the simplex method to find the optimal fuzzy solution for (FFFLP). …”
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Developing a numerical framework to study the cavitation and non-cavitation behaviour of a centrifugal pump inducer by Seyed Ehsan Hosseini, Amin Deyranlou, Pouyan Talebizadehsardari, Hayder I. Mohammed, Amir Keshmiri

“…The present work explores the impact of tip clearance on the mean blade height ratio, inlet tip blade angle, and surface roughness of the inducer. The objective is to find an optimized inducer to limit the secondary flow over the blades, which in turn improves the pump efficiency and reduces the life cycle costs. …”
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Particle Directional Conveyance under Longitudinal Vibration by considering the Trough Surface Texture: Numerical Simulation Based on the Discrete Element Method by Huazhi Chen, Shengyuan Jiang, Rongkai Liu, Weiwei Zhang

“…An undersized or oversized distance reduces the steady conveyance velocity. We find the optimal distance to be between one and two particle diameters.…”
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Performance of UF-5000 in rapidly screening out urinary tract infection, predicting Gram-negative bacteria infection by Wei Lu, Zhaoxing Li, Tong Zhang, Yan Li, Huange Zhu, Ya Zhao, Ke Lei, Zhi Guo, Jing Zhang, Juan Guo, Lei Zhang

“…Bacteria forward scatter (B_FSC), and bacteria fluorescent light intensity (B_FLH) parameters were assessed to determine the optimal angle for discriminating bacterial growth patterns, which was verified in the validation cohort. …”
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Implementation of Method of Minimizing the Side Lobe Level of Autocorrelation Functions of Signals With Nonlinear Frequency Modulation by O. O. Kostyria, A. A. Hryzo, I. A. Khizhnyak, A. V. Fedorov, A. A. Lukianchykov

“…In further research, it is planned to develop an algorithm for optimizing the time-frequency parameters of signals with nonlinear frequency modulation based on mathematical models of current and shifted time. …”
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A Mathematical Model of Transmission Dynamics of SARS-CoV-2 (COVID-19) with an Underlying Condition of Diabetes by Samuel Okyere, Joseph Ackora-Prah

“…World Health Organization (WHO) finds that 18.3% of COVID-19 deaths in Africa are among people with diabetes. …”
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Energy Efficient Multipath Routing Protocol for Mobile Ad-Hoc Network Using the Fitness Function by Aqeel Taha, Raed Alsaqour, Mueen Uddin, Maha Abdelhaq, Tanzila Saba

“…The fitness function is used to find the optimal path from source node to destination node to reduce the energy consumption in multipath routing. …”
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Guiding a supersonic controlled object in a multi-position air basing radar by V. E. Markevich, V. V. Legkostup

“…A distinctive feature of the synthesized algorithms is the natural accounting for the nonlinear, multidimensional, and multiply connected structure of the control object, as well as the parameters of unsteady perturbations (acceleration of gravity, projections of the longitudinal acceleration of the object and acceleration of the target’s maneuver) that act in the guidance process.The unified kinematic differential equations that describe the dynamics of the control object, are obtained, and they can be used to synthesize a controller that operates according to switched or smoothly matched non-stationary optimality criteria (target functions, target integral manifolds). …”
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Endodontic treatment of teeth with a wide apical opening – a clinical case by V. A. Popov, E. S. Pestova, S. A. Anisimova

“…Therefore, there is a need to find and apply the most optimal dental materials for the treatment of dental periodontitis in adolescents. …”
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Trajectory Tracking Control of Robot based on Improved Genetic Algorithm by Liu Yiyang, Liu Mingming

“…Through genetic evolution way to find the target point and move,and in order to make the robot trajectory control of genetic algorithm that satisfy matching conditions and parameters perturbation error,a integral term of robot trajectory tracking error in the synovial surface is designed,and the algorithm is improved. …”
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Customer Behavior Analysis in Ticket Windows at Scenic Spots from Game-Theoretic Perspective by Peng Li, Tao Jiang, Lu Liu, Sherif I. Ammar

“…Finally, to demonstrate how various parameters affect the joining strategies, some numerical examples are provided.…”
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