A Laboratory Approach Considering Salinity to Investigate Archie’s Parameters in Deep Shale: A Case Study in Longmaxi Formation, Southern Sichuan by Yanran Li, Xiangui Liu, Changhong Cai, Zhiming Hu, Bo Wu, Ying Mu, Xianggang Duan, Qingxiu Zhang, Shuti Zeng, Jingshu Guo, Zhijin Pu

“…It was concluded that the complicated pore structure and high porosity mainly associated with clay mineral may trigger the increased cementation factor. Further mathematical derivations confirmed that the rock resistivity is inextricable from pore system and establish a physical model. …”
Get full text

Problematic Issues of Calculating the Size of Damage from the Use of Land Plots for Other Purposes within the Practice of Law Enforcement Agencies by I. V. Bryhadyr, I. V. Panova

“…The foundations of the research methodology constitute: comparative and legal method, which assisted to study the requirements of EU and Ukrainian legislative acts; the method of systematic analysis, which allowed to reveal the legal mechanisms for calculating the amount of damage caused to the state and territorial communities from the use of land plots for other purposes; method of mathematical modeling, which allowed to form propositions for improving the formula of calculating the damage caused by the misuse of land plots. …”
Get full text

An Algorithm for Optimal Allocation of Water Resources in Receiving Areas Based on Adaptive Decreasing Inertia Weights by Fei Li, Guang Zhang, Shaohua Hu

“…This paper firstly selects the minimum loss of water resources allocation as the objective function for mathematical modelling, chooses the particle swarm algorithm as the objective algorithm, and proposes a particle swarm algorithm based on the standard particle swarm algorithm with improved adaptive decreasing inertia weights. …”
Get full text

A New Method for Research on Unsteady Pressure Dynamics and Productivity of Ultralow-Permeability Reservoirs by Kun Wang, Li Li, Xiao Chen, Wei Liang, Yong Yang, Zhenghe Yan, Jianwen Dai, Wei Li, Yahui Wang, Weifang Wang, Min Li, Danling Wang

“…On that basis, instead of a constant skin factor, a well-test interpretation mathematical model is established by defining and using a time-varying skin factor. …”
Get full text

Power flow and power quality improvement of a residential-industrial microgrid using 72-pulse inverter-based UIPC by Mahyar Abasi, Ali Nahavandi, Javad Ebrahimi, Gevork B. Gharehpetian

“…The second contribution is related to presenting a switching pattern to produce the 72-pulse voltage signals, represented in this article with an explicit mathematical function. The control design is capable of controlling the active and reactive power of the microgrid in various conditions of normal and critical performance. …”
Get full text

Improvement of the Method of Calculation of Steady-State Modes of Urban Electric Networks Taking into Account Consumer Energy Sources by M. I. Fursanov, A. A. Zalotoy

“…Active elements of networks are power sources (transformer inputs of low voltage of feeding substations and distributed small generation sources) and loads, mathematical models of which can be various. Power sources in urban distribution networks of 10 kV and below are classified by type and power and can be of two kinds, viz. power feeding centers of the network and small generation sources. …”
Get full text

Design of Hydraulic Bulging Die for Automobile Torsion Beam and Optimization of Forming Process Parameters by Kefan Yang, Youmin Wang, Kexun Fu

“…AMESim software is employed to design hydraulic synchronous control system for cylinders on both sides of the hydraulic bulging die. Mathematical control model is established and verified in Simulink software. …”
Get full text

Wpływ nowożytnego antropocentryzmu na relację człowieka do przyrody. Część pierwsza by Anita Ganowicz-Bączyk

“…The man was obliged even to dominate nature which was viewed as a complex of mathematical laws, a value-free mechanism determined by laws of nature. …”
Get full text

DC/DC converter to power spectral lamps by M. Yu. Nikolshin, A. V. Frunze, V. K. Bityukov

“…The set task is solved by methods of mathematical calculations, circuit simulation in LTSpice XVII сomputer-aided design system, and experimental verification.Results. …”
Get full text

Analysis of International Competitiveness of Multinational Corporations Based on Rough Sets by Jing Zhao, Ning Qi

“…Rough set theory is a new mathematical tool to deal with uncertain knowledge. Therefore, the theory of rough set is helpful for decision-makers to solve the decision problems of complex systems. …”
Get full text

Oral English Development of EFL Learners from the Perspective of Complexity Dynamic Theory by Qiang Dou, Guohua Li, Yuan Tang

“…After that, this paper sets up a controlled test of oral English learning through the learning method formulated by the complex dynamic system theory and verifies the learning effect of the oral English learning method proposed in this paper according to the mathematical theory research method of the complex dynamic system. …”
Get full text

Integrating Model‐Informed Drug Development With AI: A Synergistic Approach to Accelerating Pharmaceutical Innovation by Karthik Raman, Rukmini Kumar, Cynthia J. Musante, Subha Madhavan

“…Model‐Informed Drug Development (MIDD) uses mathematical models to simulate intricate processes involved in drug absorption, distribution, metabolism, and excretion, as well as pharmacokinetics and pharmacodynamics. …”
Get full text

Cognitive Aspects of Modern Philosophy of Historical Knowledge by Spartak Sh. Aytov

“…The influence of research on various historical and historical anthropological problems such concepts implanted in the methodology of modern philosophy of history scientific disciplines as chaos theory, synergetics, mathematical biology, ethnology, social psychology, etc. …”
Get full text

Biomechanics of Heading a Soccer Ball: Implications for Player Safety by Charles F. Babbs

“…To better understand the risk and safety of heading a soccer ball, the author created a set of simple mathematical models based upon Newton�s second law of motion to describe the physics of heading. …”
Get full text

Microcrack feature extraction method for chaotic optical surface of silicon nitride ceramic bearing roller based on multi-scale wavelet transform enhancement and optimized PSO-FCM... by Yi Jiang, Mengtao Tang, Wenjie Dong, Guoxing Tang, Weiwen Hu, Jiao Li

“…The particle swarm optimization mathematical equation with a decay function is built to optimize the FCM chaotic clustering model. …”
Get full text

Prediction of Bench Blasting Vibration on Slope and Safety Threshold of Blasting Vibration Velocity to Undercrossing Tunnel by Li He, Dongwang Zhong, Yihe Liu, Kun Song

“…The vibration response characteristics of the rock surrounding the slope and tunnel are analyzed, and a mathematical prediction model for the peak particle velocity (PPV) with consideration of the influence of the relative slope gradient (H/D) is established based on dimension analysis theory, which improves the prediction accuracy of PPV at the slope surface. …”
Get full text

Selection of strawberry cultivars according to their productivity and berry quality using normalized indices by V. I. Lapshin, V. V. Yakovenko

“…The analysis was carried out for productivity (the number of berries, the weight of berries of the 1st order, and the average berry weight), marketable quality of berries (berry pulp density, berry height, and berry diameter), and total weight of berries per plant. Mathematical data processing employed a two-factor analysis of variance, the principal component method, cluster analysis by Ward’s algorithm, and Wilcoxon test.Results. …”
Get full text

Optimal Sizing and Techno-economic Analysis of Combined Solar Wind Power System, Fuel Cell and Tidal Turbines Using Meta-heuristic Algorithms: A Case Study of Lavan Island by Hessameddin Talebi, Javad Nikoukar, Majid Gandomkar

“…This study introduces a novel mathematical approach to optimize the sizing of photovoltaic (PV), wind, hydrogen, battery, and fuel cell systems with electrolyzers, specifically tailored for the remote area of Lavan Island. …”
Get full text

Estimation of Blood Pressure by Image-Free, Wearable Ultrasound by Ana Belen Amado Rey

“…., from the aorta to the radial artery), we applied mathematical models and algorithms, specific to the site of measurement, to accurately extract BP. …”
Get full text

Mine Geological Environment Monitoring and Risk Assessment in Arid and Semiarid Areas by Jiaqi Jin, Chicheng Yan, Yixuan Tang, Yilong Yin

“…Based on the above background, this thesis takes the coal mining area in the arid and semiarid regions as an example; applies the theories of ecology, coal mining subsidence, geodesy, and ecological restoration; uses remote sensing in synthetic aperture radar (SAR), geographic information system (GIS), and mathematical modelling to reveal the ecological evolution law of the mining area; measures the ecological damage of the mining area; and then proposes a reasonable ecological restoration strategy. …”
Get full text