On the Connectivity of Wireless Network Systems and an Application in Teacher-Student Interactive Platforms by Xun Ge

“…To investigate the connectivity of wireless network systems, this paper takes covering approximation spaces as mathematical models of wireless network systems. With the help of covering approximation operators, this paper characterizes the connectivity of covering approximation spaces by their definable subsets. …”
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Investigation of applicability of Peng–Robinson and GERG-2008 equations of state of real gas for calculating properties of Freons for refrigeration machines and compressors by M. I. Sokolov, Yu. V. Kozhukhov

“…As a result of this work, data have been obtained to evaluate the accuracy of the Peng–Robinson and GERG-2008 equations of state for each of the three CFCs, to evaluate the effectiveness of these equations, and to provide recommendations for the calculation and application of these equations in the design and mathematical modelling of refrigeration machines…”
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Pinched hysteresis loops in non‐linear resonators by Ahmed S. Elwakil, Mohammed E. Fouda, Sohaib Majzoub, Ahmed G. Radwan

“…Abstract This study shows that pinched hysteresis can be observed in simple non‐linear resonance circuits containing a single diode that behaves as a voltage‐controlled switch. Mathematical models are derived and numerically validated for both series and parallel resonator circuits. …”
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Modeling the Effects of Nonpharmaceutical Interventions on COVID-19 Spread in Kenya by Duncan K. Gathungu, Viona N. Ojiambo, Mark E. M. Kimathi, Samuel M. Mwalili

“…Mathematical modeling of nonpharmaceutical interventions (NPIs) of coronavirus disease (COVID-19) in Kenya is presented. …”
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Performance analysis and power optimization for FH secure communication under frequency and phase mismatch by Changqing SONG, Hongzhi ZHAO, Lizhi QIN, Shihai SHAO

“…The artificial noise (AN) shielded frequency hopping (FH) secure communication can counteract electromagnetic interference and wiretapping, but its carrier frequencies change rapidly within a wide bandwidth which will raise the level of carrier frequency offset and phase noise, yielding AN cancellation performance degradation.To tackle this, the signal distortion caused by frequency and phase mismatch (FPM) was mathematically modeled, the AN cancellation performance was evaluated via signal-to-noise ratio, and the system secrecy was scaled via secrecy capacity.On basis of this, the optimal power allocation scheme for AN and confidential signal was designed, and the scheme was expanded according to the FPM level and the propagation channel quality.Numerical simulations verify that FPM can significantly degrade the noise cancellation performance and system secrecy, and to counteract this, the power ratio of AN to confidential signals should decrease with an increasing FPM.…”
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INFLUENCE OF LINING THERMAL PERFORMANCE IN ELECTRIC-ARC FURNACES ON POWER CONSUMPTION by S.. V. Korneev

“…It has been  shown that on the basis of mathematical modeling methods for thermal processes it is possible to predict power consumption of furnaces at the operational split schedule with due account of such furnace characteristics as capacity, lining materials, furnace idle times under closed and open conditions etc. …”
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Water Quality Analysis for the Depletion of Dissolved Oxygen due to Exponentially Increasing Form of Pollution Sources by N. Manitcharoen, B. Pimpunchat, P. Sattayatham

“…Analyzing and improving mathematical models for water quality investigation are imperative for water quality issues around the world. …”
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Functionally Graded Materials: An Overview of Stability, Buckling, and Free Vibration Analysis by Ning Zhang, Tahir Khan, Haomin Guo, Shaoshuai Shi, Wei Zhong, Weiwei Zhang

“…Moreover, the analyses of mathematical models adopted for the aforementioned analyses are not the core purpose of this paper. …”
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A New Approach for Solving Weight Functions of Electromagnetic Flowmeters Using Resistive Network Modeling by Shiyi Yin, Bin Li

“…This paper treats the problem within the intuitive physical perspective, and the approach, in which the proportion of the current is considered as the substitute for the weight function with the hypothetic current excitation source, is presented. A simple mathematical modeling of the current is built by means of the resistive network without the redundant assumption, and the strict mathematical derivation for the conventional asymmetric flow in the circular flowmeter is made to verify the feasibility and the correctness of the approach. …”
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Design Analysis and Implementation of a Passive Expansion Spherical Robot by Shao Pai, Qin Jianjun, Cao Yu, Liu Xingjie, Chen Haonan

“…A linear expanded rack-and-pinion mechanism is introduced to design a spherical robot with compact structure and multiple motion modes. Mathematical models are established to perform kinematic and dynamic analysis of spherical robot mechanisms, the simulation results of rolling and obstacle crossing are compared with the theoretical values to verify the correctness of kinematics and dynamics. …”
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Energy Loss Analysis of Dual Power Supply-Powered Motor Drive During Supercapacitor Energy Storage Discharge by Ģirts Staņa, Kaspars Kroičs

“…For each case, simulation and mathematical models are developed and the simulation results are verified. …”
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Ooi K. T., Shakya P. A Simulation studies of a coupled vane compressor / trans. from Engl. M. A. Fedorova by M. A. Fedorova

“…In this paper, the mathematical models of the novel Coupled Vane compressor (CVC) is formulated to study its operational characteristics and to assess its performance. …”
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Influence of Concrete Creep on the Bending of a Prestressed Bridge Beam by Petr P. Gaidzhurov, Elvira R. Iskhakova, Nina A. Saveleva

“…Moreover, there are no mechanic-mathematical models of hereditary type oriented to the finite-element method.The concept of modelling of long-term deformation of reinforced concrete structures in a three-dimensional statement, based on the use of the integral deformation modulus of concrete, does not allow one to carry out designing considering the technological prehistory. …”
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Protocols for translocation processes of flexible polymers through a pore using LAMMPS by Vrinda Garg, Rejoy Mathew, Arindam Chatterjee, Surya K. Ghosh

“…This protocol has potential applications in developing mathematical models for DNA sequencing, controlled drug delivery, and cellular transport processes.For complete details on the use and execution of this protocol, please refer to Garg et al.1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.…”
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Design of a Leg Lift Aid Device Used in Bed for the Elderly by Jiachao Luo, Qunbiao Wu, Baole Zhao, Qinhu Sun, Haina Yang, Yuyan Zhang

“…The track of the elderly's leg going to bed is analyzed. Based on mathematical modeling，the leg lift trajectory is simulated by intersection curves between spherical surface and conical surface，a spatial linkage is designed to help leg lift and its specific structure design and motion simulation are analyzed. …”
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Analysis of Naturally Occurring Radioactive Material (NORM) in shifting earth layers in Piyungan, Bantul by Iqbal Nurrahim, Andang Widi Harto, Yohannes Sardjono, Isman Mulyadi Triatmoko, Zuhdi Ismail, Gede Sutresna Wijaya

“…This study advances current methodologies by refining radon data analysis and employing mathematical models to further elucidate this relationship. …”
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Nonlinear Dynamics and Chaos in Systems with Discontinuous Support by Sandor Divenyi, Marcelo Amorim Savi, Luiz Fernando Penna Franca, Hans Ingo Weber

“…Since the time scale of this transition is much smaller than the scale of the individual modes dynamics, its mathematical modeling can be lead as non-smooth. This contribution uses a smoothened switch model to analyze non-smooth systems. …”
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A Survey of Transportation Problems by Ocotlán Díaz-Parra, Jorge A. Ruiz-Vanoye, Beatriz Bernábe Loranca, Alejandro Fuentes-Penna, Ricardo A. Barrera-Cámara

“…This paper aims at being a guide to understand the different types of transportation problems by presenting a survey of mathematical models and algorithms used to solve different types of transportation modes (ship, plane, train, bus, truck, Motorcycle, Cars, and others) by air, water, space, cables, tubes, and road. …”
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Complexity: Frontiers in Data-Driven Methods for Understanding, Prediction, and Control of Complex Systems 2022 on the Development of Information Theoretic Model Selection Criteria... by Andrea Murari, Michele Lungaroni, Riccardo Rossi, Luca Spolladore, Michela Gelfusa

“…It can be argued that the identification of sound mathematical models is the ultimate goal of any scientific endeavour. …”
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Effect of Couple-Stress on Peristaltic Transport of Sutterby Fluid in an Asymmetric Channel by Asmaa Mohammed, Liqaa Zeki Hummady

“…In the presence of rotation and couple–stress, mathematical modeling is developed using constitutive equations based on the model of Sutterby fluid. …”
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