Showing 1,221 - 1,240 results of 1,844 for search '"exponentiation"', query time: 0.05s Refine Results
  1. 1221

    Kinetic Model for pH Variation Resulted from Interaction of Aqueous Solution Contaminated with Nickel Ions and Cement Kiln Dust by Dooraid N. Ahmed, Ayad A. H. Faisal, Salim H. Jassam, Laith A. Naji, Mu. Naushad

    Published 2020-01-01
    “…The results proved that the kinetic model based on the numerical approximation (using exponential functions for adsorption capacity and reaction constant) symbolled as model 2 was more representative from other models applied for the description of interaction of nickel ions (with initial concentration of 400 mg/L) and cement kiln dust with sum of squared error ≤1.54913 and determination coefficient ≥0.889. …”
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  2. 1222

    Secure Communication Scheme Based on a New 5D Multistable Four-Wing Memristive Hyperchaotic System with Disturbance Inputs by Fei Yu, Zinan Zhang, Li Liu, Hui Shen, Yuanyuan Huang, Changqiong Shi, Shuo Cai, Yun Song, Sichun Du, Quan Xu

    Published 2020-01-01
    “…The dynamic characteristics of the system are studied in terms of equilibrium point, perpetual point, bifurcation diagram, Lyapunov exponential spectrum, phase portraits, and spectral entropy. …”
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  3. 1223

    Effect of the Lifting Velocity and Container Shape on Angle of Repose of Iron Ore Particles by Tongqing Li, Yuxing Peng, Zhencai Zhu, Zhangfa Yu, Zixin Yin

    Published 2017-01-01
    “…Results show angle of repose decreased exponentially with the lifting velocity, while it appeared approximately to be invariant to particle shape, for all size fractions. …”
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  4. 1224

    Deterioration of Li-doped phenanthroline-based charge generation layer for tandem organic light-emitting diodes by Ki Ju Kim, Sunwoo Kang, Taekyung Kim

    Published 2025-01-01
    “…Through current density–voltage and capacitance-frequency measurements, it was revealed that electrical stress and thermal stress affect CGL’s electrical properties differently. Moreover, the exponential trap distribution model analysis informed that the Li diffusion is expedited toward narrowing depletion width in the CGL. …”
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  5. 1225

    Synthesis and Properties of Bionanocomposites of Polyhydroxybutyrate-Polylactic Acid Doped with Copper and Silver Nanoparticles by Galo Cárdenas-Triviño, Nelson Linares-Bermúdez, Mario Núñez-Decap

    Published 2019-01-01
    “…Regarding tensile tests, PLA/PHB/nanoparticle (NP) blends showed higher Young modulus value action improving exponentially some properties and they can act as a powerful complementary component even in small amounts. …”
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  6. 1226

    EE-SAMS: An adaptive, SNN based energy-efficient data aggregation framework for agrovoltaic monitoring systems by Blessina Preethi R, Berin Shalu S, Saranya Nair M, Vergin Raja Sarobin M

    Published 2025-03-01
    “…At the aggregator level, feature extraction and data classification are conducted through Conv1D and MaxPooling layers, with classification powered by a modified Spiking Neural Network (SNN) using the Adaptive Exponential Integrate-and-Fire (AdEx) model, achieving a high classification accuracy of 99.27%. …”
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  7. 1227

    100 Years of palaeo-research and its relevance for transformation and social cohesion in South Africa by Dipuo Kgotleng, Stella Basinyi, Wendy Black, Precious Chiwara-Maenzanise

    Published 2025-02-01
    “…After this discovery, and its announcement in 1925, the discipline of palaeoanthropology grew exponentially on the continent. This centennial milestone necessitates reflection on the role of science in society, with a critical look at the relationship between palaeosciences, the theories of human evolution, and the researcher’s interaction with southern African Indigenous peoples. …”
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  8. 1228

    Characterization of the dynamic behavior of nonlinear biosystems in the presence of model uncertainty using singular invariance PDEs: Application to immobilized enzyme and... by Nikolaos Kazantzis, Vasiliki Kazantzi

    Published 2010-03-01
    “…Within the class of analytic solutions, this set of conditions guarantees the existence and uniqueness of a locally analyticsolution which represents the system's slow invariant manifold exponentially attracting all dynamic trajectories in the absence of model uncertainty. …”
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  9. 1229

    The effect of a hypocycloid irregularity on torsional surface waves in a multilayer system by Saha Anup, Das Sandip Kumar

    Published 2024-01-01
    “…It is assumed that the directional rigidities, density and initial stress vary in the upper and lower semi-infinite spaces in an exponential and hyperbolic manner, respectively. A closed form for the torsional wave dispersion equation is presented. …”
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  10. 1230

    Research on smoke diffusion and evacuation routes of mine fires with complex roadway networks by Menghui Xiao, Cuifeng Du, Yuan Wang, Jiuzhu Wang, Baomeng Chang

    Published 2025-02-01
    “…The fire-induced pressure is exponentially related to temperature rise, with a fitted equation for a 10° ramp expressed as Pfire = 150.58ΔT0.18. …”
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  11. 1231

    Hamilton-Jacobi Reachability in Reinforcement Learning: A Survey by Milan Ganai, Sicun Gao, Sylvia L. Herbert

    Published 2024-01-01
    “…Previously, HJ reachability was restricted to verifying low-dimensional dynamical systems primarily because the computational complexity of the dynamic programming approach it relied on grows exponentially with the number of system states. In recent years, a litany of proposed methods addresses this limitation by computing the reachability value function simultaneously with learning control policies to scale HJ reachability analysis while still maintaining a reliable estimate of the true reachable set. …”
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  12. 1232

    Effect of Stress and Moisture Content on Permeability of Gas-Saturated Raw Coal by Junhui Wang, Zhijun Wan, Yi Wang, Zhixiang Liu, Sifei Liu, Hongwei Zhang, Qiuyan Pei

    Published 2020-01-01
    “…., confining pressure or volumetric stress) in a negative exponential manner. (3) The curves of permeability variations with moisture content are not always linear, and the permeability is more sensitive to the moisture content than the volumetric stress in the test range. …”
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  13. 1233

    Stochastic Risk Assessment with a Lagrangian Solution for the Optimal Cost Allocation in High-Speed Rail Networks by Jing Zuo, Jianwu Dang, Min Lyu

    Published 2020-01-01
    “…By introducing the component failure occurrence probability, which is considered to be an exponential function changing with the component maintenance costs, a feasible stochastic risk assessment model of the HSRNs together with the component impact assessment is proposed that can better unify the impact assessment of both the high-speed rail stations and railways. …”
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  14. 1234

    Numerical Simulation of the Collision Breakage Process between the Agglomerate and Hammer in a Hammer Crusher Using DEM by Sokgun Hong, Un Chol Han, Gum Chol Kim, Kwang Myong Ri, Song Ri

    Published 2023-01-01
    “…The collision force is represented as Gaussian function, the collision impulse is represented by the function of the mass ratio of agglomerate to hammer and the product of agglomerate mass and collision velocity, and the relationship between the specific breakage energy and agglomerate damage ratio is represented by exponential function. Finally, it can be seen from this study that, when crushing the agglomerate by hammer impact, it is necessary to increase the specific breakage energy by 1.75 times in order to increase the agglomerate damage ratio from 85% to 90% but 2.13 times in order to increase 95%. …”
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  15. 1235

    An Empirical Relationship Between Coronal Density and Solar Wind Velocity in the Middle Corona With Applications to Space Weather by Kaine A. Bunting, Huw Morgan

    Published 2023-03-01
    “…Based on comparison of the distribution of in situ measurements of density and velocities, this work finds a scaled exponential equation relating the density and outflow velocity at 8 R⊙, with three key parameters found as a function of time between years 2007–2021. …”
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  16. 1236

    Time Series Forecasting for Regional Development Composite Index Using Real-Time Floating Population Data by Jungyeol Hong, Jieun Na, Youjeong Kang, Dongho Kim

    Published 2023-01-01
    “…Composite development indices show an exponential movement of major economic indicators to identify and predict the overall trend of the national economy. …”
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  17. 1237

    Microbial molecules, metabolites, and malignancy by Ryan M. Thomas

    Published 2025-02-01
    “…Research elucidating the role of the microbiome in carcinogenesis has grown exponentially over the past decade. Initially isolated to associative studies on colon cancer development, the field has expanded to encompass nearly every solid and liquid malignancy that may afflict the human body. …”
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  18. 1238

    Joint Identification and Sensing for Discrete Memoryless Channels by Wafa Labidi, Yaning Zhao, Christian Deppe, Holger Boche

    Published 2024-12-01
    “…Unlike Shannon’s transmission codes, which aim for message decoding, ID codes for a discrete memoryless channel (DMC) are far more efficient; their size grows doubly exponentially with the blocklength when randomized encoding is used. …”
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  19. 1239

    Nonlinear dynamic wave properties of travelling wave solutions in in (3+1)-dimensional mKdV-ZK model. by S M Yiasir Arafat, M Asif, M M Rahman

    Published 2025-01-01
    “…These solutions exhibit a combination of rational, trigonometric, hyperbolic, and exponential solutions that are concurrently generated by the new auxiliary equation and the unified techniques. …”
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  20. 1240

    Research on Orbital Angular Momentum Mode Detection in an Atmospheric Environment with Fusion Transfer Learning by Chenghu Ke, Youmei Chen, Xizheng Ke

    Published 2024-12-01
    “…Due to the large amount of data required for training each OAM mode, the increase in channel capacity leads to an exponential growth in the required data volume. At the same time, the phase wavefront distortion caused by atmospheric turbulence (AT) further increases the difficulty of OAM pattern recognition. …”
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