Search Results - computational complexity theory

Hydrostatic-Pressure Modulation of Band Structure and Elastic Anisotropy in Wurtzite BN, AlN, GaN and InN: A First-Principles DFT Study by Ilyass Ez-zejjari, Haddou El Ghazi, Walid Belaid, Redouane En-nadir, Hassan Abboudi, Ahmed Sali

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Intratentacular budding and zooid-dynamics in two coral genera by Matan Yuval, Amit Peleg, Elvan Ceyhan, Dan Tchernov, Yossi Loya, Avi Bar-Massada, Tali Treibitz

“…Moreover, our dataset has broad interdisciplinary value, with potential applications ranging from computer graphics and geometric modeling to studies of natural tiling patterns and spatial organization in biological systems.…”
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Reaction-diffusion model for brain spacetime dynamics by Qiang Li, Vince D. Calhoun

“…The human brain exhibits intricate spatiotemporal dynamics, which can be described and understood through the framework of complex dynamic systems theory. In this study, we leverage functional magnetic resonance imaging (fMRI) data to investigate reaction-diffusion processes in the brain. …”
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New operational relations for mathematical models of local nonequilibrium heat transfer by E. M. Kartashov

“…Methods and theorems of operational calculus, methods of contour integration of complex transforms, and the theory of special functions were used.Results. …”
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Optimization of Finite-Alphabet Signaling for Two-User Multiaccess VLC Systems by Zhen-Yu Wang, Hong-Yi Yu, Yan-Yu Zhang, Da-Ming Wang

“…By applying the properties of Farey sequence in number theory to solve the finite-alphabet optimization, it is proved that the optimal received signal constitutes an equally spaced pulse amplitude modulation constellation, which admits a low-complexity maximum likelihood detection. …”
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A Modified Symmetric Key Fully Homomorphic Encryption Scheme Based on Read-Muller Code by RatnaKumari Challa, VijayaKumari Gunta

“…Homomorphic encryption became popular and powerful cryptographic primitive for various cloud computing applications. In the recent decades several developments has been made. …”
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Universal machine learning interatomic potentials poised to supplant DFT in modeling general defects in metals and random alloys by Fei Shuang, Zixiong Wei, Kai Liu, Wei Gao, Poulumi Dey

“…These models offer broad applicability across the periodic table, achieving first-principles accuracy at a fraction of the computational cost of traditional DFT calculations. In this study, we demonstrate that state-of-the-art pretrained uMLIPs can effectively replace DFT for accurately modeling complex defects in a wide range of metals and alloys. …”
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A procedure of automatic evaluation of residual statistic adjustments for increasing information value of exploration seismology data by О.О. Верпаховська, Г.Д. Лісний, О.І. Полунін

“…A procedure of automatic finding of residual statistic corrections based on usage of seismograms of equal distances and first wave arrivals without conducting their correlations that gives a possibility to exclude the effect of operator mistakes to the result has been considered. A theory has been proposed with algorithm consisting of putting in the observed wave fields, assortment of paths, finding temporal shifts by equidistant paths and computation of correcting adjustments for all the sources and receivers and the programming realization of finding the residual statistic corrections as a new interactive program corst3D, aimed at increasing the level of studies of structure of geological medium of different complexity by the data of both 2D and 3D seismic exploration. …”
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Prediction Method and Characteristics of Static Acoustic Scattering for Marine Composite Propellers by Suchen XU, Zilong PENG, Fulin ZHOU, Xuhong MIU, Huicheng KE

“…This study introduces a hybrid approach to predict the acoustic scattering characteristics of composite propellers featuring variable thickness and complex curvature. The approach combines the Kirchhoff approximation (KA), which employs an intersection algorithm (IA) for determining the thickness of discrete surface elements, with the theory of orthotropic laminate transfer matrix (OLTM). …”
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UAM Vertiport Network Design Considering Connectivity by Wentao Zhang, Taesung Hwang

“…The results show that the proposed hybrid methodology not only yields high-quality solutions but also significantly reduces computational time, enabling faster convergence. Overall, this study provides practical insights for UAM infrastructure planning by emphasizing demand-oriented vertiport siting and inter-vertiport connectivity, thereby contributing to both theoretical development and large-scale implementation in complex urban environments.…”
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Analysis of plant metabolomics data using identification‐free approaches by Xinyu Yuan, Nathaniel S. S. Smith, Gaurav D. Moghe

“…These methods include molecular networking, distance‐based approaches, information theory–based metrics, and discriminant analysis. Additionally, we explore their practical applications in plant science and highlight a set of useful tools to support researchers in analyzing complex plant metabolomics data. …”
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Zero-Sum Game-Based Tracking Control for Fully-Coupled Nonaffine AUV With Unknown Affine Disturbance Using Critic Network by Gaofeng Che, Xiaoqiang Hu

“…In the process of water quality monitoring, autonomous underwater vehicle (AUV) is required to track desired trajectory. And AUV is a very complex nonlinear systems and exhibits fully-coupled and nonaffine properties. …”
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Prediction and Parameter Optimization of Surface Settlement Induced by Shield Tunneling Using Improved Informer Algorithm by Shisen Zhao, Xianda Feng, Kefeng Peng

“…Given the complex mechanism of surface settlement induced by shield tunneling, accurate prediction of surface settlement and rational design of tunneling parameters are critical for ensuring safe and efficient tunneling operations. …”
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MATHEMATICAL MODELS OF DECISION SUPPORT IN THE PROBLEMS OF LOGISTICS NETWORKS OPTIMIZATION by Володимир Валентинович Безкоровайний, Оксана Михайлівна Драз

“…The following methods are used: systems theory, utility theory, optimization and operations research. …”
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Configuring adaptive PID-controllers of the automatic speed control system of the GTE by K. E. Chertilin, V. D. Ivchenko

“…The problem of designing adaptive systems is one of the most important in control theory and related fields. This is conditioned by two factors: the complexity of solving the problem as a whole and the presence of a large number of technically diverse situations that need to be adapted and optimized. …”
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STRUCTURAL SYNTHESIS OF NAVIGATION SUPPORT OF TRIAD INTEGRATED NAVIGATION SYSTEM ON THE BASIS OF INERTIAL AND SATELLITE TECHNOLOGIES by V. S. Maryukhnenko, V. V. Erokhin

“…Based on optimal filtering theory methods the integrated navigation data processing algorithm, which is an extended Kalman filter, is synthesized. …”
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Gaussian approximation of dynamic cavity equations for linearly-coupled stochastic dynamics by Mattia Tarabolo, Luca Dall'Asta

“…Stochastic dynamics on sparse graphs and disordered systems often lead to complex behaviors characterized by heterogeneity in time and spatial scales, slow relaxation, localization, and aging phenomena. …”
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The Image of Russia in South Africa Media Discourse: Frames and Metaphors by Olga A. Solopova, Natalia N. Koshkarova

“…The findings have important implications for clarifying the criteria of frame identification, relying on corpus-based and computational tools, developing discourse theory by introducing the data of South African media discourse.…”
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Robust multisynchrosqueezing transform time frequency technologies with application to fault diagnosis by Haibin Wang, Junbo Long, Changshou Deng, Youxue Zhou

“…To address this limitation, several robust post-processing TFA technologies based on the fractional lower-order statistics theory have been proposed. These include the fractional lower-order local maximum multisynchrosqueezing transform (FLOLMSST), fractional lower-order improved multisynchrosqueezing transform (FLOIMSST), and fractional lower-order time-reassigned multisynchrosqueezing transform (FLOTMSST), with their computational processes detailedly derived. …”
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Applications of the Shapley Value to Financial Problems by Olamide Ayodele, Sunday Timileyin Ayodeji, Kayode Oshinubi

“…Our theoretical insights with computational techniques highlights the Shapley value’s effectiveness in addressing complex allocation challenges across financial management domains.…”
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