Showing 9,781 - 9,800 results of 12,472 for search '"theories"', query time: 0.11s Refine Results
  1. 9781

    Research of changes in electromagnetic parameters in controlled asynchronous special electric drives by V. Yu. Karandey, O. B. Popova, B. K. Popov, V. L. Afanasiev

    Published 2023-02-01
    “…The study of the dynamics of parameter changes is carried out on the basis of the method of electromagnetic energy conversion and the theory of electromagnetic circuits. As a result, for new mathematical models of the electromagnetic system of the studied asynchronous electric drives, the parameters of the electromagnetic field of a closed coil of one coil of an electric winding with electric current in a homogeneous medium are determined. …”
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  2. 9782

    Reference Ecosystem Condition-Based Syntaxonomic Study for Ecological Restoration and Protection of Temperate Forests in South Korea by Minsu Kim, Namin Koo, A Reum Kim, Kiwoong Lee, Soon Jin Yun

    Published 2025-01-01
    “…To facilitate this choice, we sought to provide a framework based on ecological theory, specifically on the relationship between vegetation and environmental properties. …”
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  3. 9783
  4. 9784

    Seismic Fragility Analysis of Self-Anchored Suspension Bridge Considering Damping Effect by Xiangong Zhou, Lei Cao, Heng Han, Xiaobo Zheng, Hanhao Zhang, Zhiqing Zhang

    Published 2022-01-01
    “…The fragility curves of the bridge system were established by first-order reliability theory. In this study, the damage probability of bridge components under a seismic wave is studied. …”
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  5. 9785

    Calibration Method for Confocal X-Ray Microanalysis with Polychromatic Excitation by C. Sosa, V. Stoytschew, J. Leani, H. J. Sánchez, C. A. Pérez, R. D. Perez

    Published 2015-01-01
    “…For the particular case of polychromatic excitation, the theory shows that the focalization properties of the excitation lens for all incident energies affect the X-ray fluorescence intensity. …”
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  6. 9786

    Model for Vaccine Design by Prediction of B-Epitopes of IEDB Given Perturbations in Peptide Sequence, In Vivo Process, Experimental Techniques, and Source or Host Organisms by Humberto González-Díaz, Lázaro G. Pérez-Montoto, Florencio M. Ubeira

    Published 2014-01-01
    “…In a recent work, we introduced a new quantitative structure-property relationship theory for the study of perturbations in complex biomolecular systems. …”
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  7. 9787

    Link Quality Prediction via a Neighborhood-Based Nonnegative Matrix Factorization Model for Wireless Sensor Networks by Yuxin Zhao, Shenghong Li, Jia Hou

    Published 2015-10-01
    “…By introducing complex network theory and machine learning techniques, we propose a neighborhood-based nonnegative matrix factorization model to predict link quality in wireless sensor networks. …”
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  8. 9788

    One-Dimensional Large-Strain Nonlinear Consolidation of Overconsolidated Clays with a Threshold Hydraulic Gradient by Chuanxun Li, Jinyang Xiao, Yang Yang, Wenbing Wu

    Published 2018-01-01
    “…However, the consolidation theory of overconsolidated clays with the threshold hydraulic gradient has been rarely reported in the literature. …”
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  9. 9789

    Quantifying Fractal Dimension in Integrated Experimental Data of Tight Sandstones by Dazhong Ren, Rongxi Li, Dengke Liu, Yuhong Li, Na Liu, Fu Yang

    Published 2019-01-01
    “…In this research, we report a new criterion for pore structure typing based on the fractal geometry theory. The fractal dimension values were first accurately calculated through intrusion and nonintrusion methods. …”
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  10. 9790

    Molecular modelling of betalactamic antibiotic by Elso Manuel Cruz Cruz, Grettel Díaz Ramón

    Published 2010-02-01
    “…The molecular properties were calculated according to the Density Functional Theory at a B3LYP/6-31G(d) level. The density of the atomic charges and the frontier orbitals were analyzed. …”
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  11. 9791

    De-extinction beyond species: Restoring ecosystem functionality through large herbivore rewilding by Paul R Jepson

    Published 2025-01-01
    “…These processes open new avenues in both extinction discourse and ecological theory and encourage us to explore how de-extinct species can drive the recovery of European ecosystems.…”
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  12. 9792

    Photocatalytical Properties and Theoretical Analysis of N, Cd-Codoped TiO2 Synthesized by Thermal Decomposition Method by Hongtao Gao, Bing Lu, Fangfang Liu, Yuanyuan Liu, Xian Zhao

    Published 2012-01-01
    “…The effect of the incorporation of N and Cd on electronic structure and optical properties of TiO2 was studied by first-principle calculations on the basis of density functional theory (DFT). The impurity states, introduced by N 2p or Cd 5d, lied between the valence band and the conduction band. …”
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  13. 9793

    Effect of Cement Asphalt Mortar Debonding on Dynamic Properties of CRTS II Slab Ballastless Track by Ping Wang, Hao Xu, Rong Chen

    Published 2014-01-01
    “…In order to analyze the influence of mortar debonding on the dynamic properties of CRTS II slab ballastless track, a vertical coupling vibration model for a vehicle-track-subgrade system was established on the base of wheel/rail coupling dynamics theory. The effects of different debonding lengths on dynamic response of vehicle and track system were analyzed by using the finite element software. …”
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  14. 9794

    A study on UAV target detection and 3D positioning methods based on the improved deformable DETR model and multi-view geometry by Xuebin Liu, Hanshan Li

    Published 2025-01-01
    “…The objective of this research is to improve UAV detection and positioning accuracy by proposing an enhanced Deformable DETR (Detection Transformer) model integrated with multi-view geometry theory. To achieve this, the study first preprocesses UAV-collected data, then optimizes the convolutional layers of the original DETR model to better handle object occlusion and scale variations. …”
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  15. 9795

    One-dimensional QCD at finite density and its ’t Hooft-Veneziano limit by O. Borisenko, V. Chelnokov, S. Voloshyn, P. Yefanov

    Published 2025-01-01
    “…Abstract An exact solution of one-dimensional lattice gauge theory at finite temperature and non-zero chemical potential is reviewed for the gauge groups G = Z(N), U(N), SU(N) for all values of N and the number of fermion flavors N f . …”
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  16. 9796

    Symbiosis Evolution of Science Communication Ecosystem Based on Social Media: A Lotka–Volterra Model-Based Simulation by Ming Xia, Xiangwu He, Yubin Zhou

    Published 2021-01-01
    “…The main contribution of this study is to construct a symbiosis evolution model of science communication ecosystem (SCE) between scientists and social media platforms based on the symbiosis theory and the Lotka–Volterra model to discuss the evolution of their symbiotic patterns and population size under different symbiosis coefficients. …”
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  17. 9797

    Artificial neural networks for stability analysis and simulation of delayed rabies spread models by Ramsha Shafqat, Ateq Alsaadi

    Published 2024-11-01
    “…The existence and uniqueness of solutions was demonstrated using fixed-point theory within the context of piecewise derivatives and integrals. …”
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  18. 9798

    Through restful waters and deep commotion: A study on burnout and health impairment of Italian seafarers from the JD-R model perspective. [version 1; peer review: 1 approved, 2 app... by Lara Colombo, Lara Bertola, Margherita Zito, Clarissa Cricenti, Lorenzo Cena, Francesco Buscema

    Published 2025-01-01
    “…This study seeks to examine the impact of burnout and health impairment in the maritime industry, using the Job Demand-Resources theory as a framework. Methods To investigate these phenomena, an online questionnaire was sent to 239 Italian seafarers (94.6% men, Mage = 39.44, SD = 12.8). …”
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  19. 9799

    Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining by Yang Yingming, Li Quansheng, Liu Shiliang, Zhang Kai, Zhao Yongqiang, Zhang Guojun, Zhang Weilong, Liu Gang

    Published 2022-01-01
    “…In view of the problem of taking the loose layer as the uniform cloth load while ignoring thickly sticky loose layered arch (TSLLA) of the traditional mining rock overburden structure analysis, combined with the geological conditions of shallow buried thickly sticky loose layer in Shendong mining area, the mechanical model of the mining TSLLA bearing structure is established, the variation law of arch height under different loose layers is analyzed, and the formation conditions of TSLLA are given. The first theory deduced the dynamic evolution mechanism of TSLLA structure advancing. …”
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  20. 9800

    Modeling Friction Performance of Drill String Torsional Oscillation Using Dynamic Friction Model by Xingming Wang, Ping Chen, Zhenhua Rui, Fanyao Jin

    Published 2017-01-01
    “…An improved theoretical model for the analysis of the frictional force was proposed based on microscopic contact deformation theory and a bristle model. The established model, an improved dynamic friction model established for drill strings in a wellbore, was used to determine the relationship of friction force changes and the drill string torsional vibration. …”
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