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Artykuły w czasopismach na temat „Time Phased Order Point”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Yao, Ce, and Chun Bo Xiu. "Target Recognition Based on Polar Coordinate Template Matching." Advanced Materials Research 712-715 (June 2013): 2368–71. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.2368.

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In order to improve the rotation invariant property of the conventional template matching method, a novel template matching based on the polar coordinate was proposed. The origin of the polar coordinate was at the center of the template. And the matching result was central symmetry, which made the method have the translation and rotation invariant properties simultaneously. The recognition process was divided into two phased. In the first phase, gray information was used to complete matching calculation, and some candidate points were selected according to the matching result. In the second ph

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2

WEMMERLÖV, URBAN. "A time-phased order-point system in environments with and without demand uncertainty: a comparative analysis of non-monetary performance variables." International Journal of Production Research 24, no. 2 (1986): 343–58. http://dx.doi.org/10.1080/00207548608919733.

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Wang, Yaoyu, Ling Liu, Xinshan Cai, Chongxin Liu, Yan Wang, and Guangchao Zheng. "Fractional-Order Hidden Attractor Based on the Extended Liu System." Mathematical Problems in Engineering 2020 (August 4, 2020): 1–22. http://dx.doi.org/10.1155/2020/1418272.

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In this paper, a new commensurate fractional-order chaotic oscillator is presented. The mathematical model with a weak feedback term, which is named hypogenetic flow, is proposed based on the Liu system. And with changing the parameters of the system, the hidden attractor can have no equilibrium points or line equilibrium. What is more interesting is that under the occasion that no equilibrium point can be obtained, the phase trajectory can converge to a minimal field under the lead of some initial conditions, similar to the fixed point. We call it the virtual equilibrium point. On the other h

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4

Panigoro, Hasan S., and Emli Rahmi. "Global stability of a fractional-order logistic growth model with infectious disease." Jambura Journal of Biomathematics (JJBM) 1, no. 2 (2020): 49–56. http://dx.doi.org/10.34312/jjbm.v1i2.8135.

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Infectious disease has an influence on the density of a population. In this paper, a fractional-order logistic growth model with infectious disease is formulated. The population grows logistically and divided into two compartments i.e. susceptible and infected populations. We start by investigating the existence, uniqueness, non-negativity, and boundedness of solutions. Furthermore, we show that the model has three equilibrium points namely the population extinction point, the disease-free point, and the endemic point. The population extinction point is always a saddle point while others are c

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5

Şenol, Bilal, Emre Avuçlu, Uğur Demiroğlu, and Radek Matušů. "Non-Integer Order Proportional Integral Control for Time Delay Plant with Single Fractional Order." International Conference on Applied Engineering and Natural Sciences 1, no. 1 (2023): 347–51. http://dx.doi.org/10.59287/icaens.1020.

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This paper studies the tuning of non-integer order proportional integral controller for time delay plants having one fractional order in its denominator polynomial. The well-known first order plus time delay plant is reorganized to have the order of the operator s to be an arbitrary real number. The main aim is to tune the parameters of the fractional order proportional integral controller to make the mentioned plant behavior to be stable and robust against unexpected changes in the gain of the system. The approach here is a graphical point of view on the Bode diagram. The two crossover points

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6

Yoneta, Yasushi. "Stationarity of quantum statistical ensembles at first-order phase transition points." Journal of Statistical Mechanics: Theory and Experiment 2023, no. 9 (2023): 093104. http://dx.doi.org/10.1088/1742-5468/acf7bd.

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Abstract We study the dynamics of quantum statistical ensembles at first-order phase transition points of finite macroscopic systems. First, we show that at the first-order phase transition point of the system, with an order parameter that does not commute with the Hamiltonian, any quantum state with an order parameter that has a nonzero value always evolves towards a macroscopically distinct state after a sufficiently long time. From this result, we argue that the stationarity required for statistical ensembles should be interpreted as stationarity on a sufficiently long but finite timescale.

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7

Kırak, Muharrem, Osman Canko, and Mustafa Keskin. "Dynamic Dipole and Quadrupole Phase Transitions in the Kinetic Metamagnetic Spin –3 / 2 Blume-Emery-Griffiths Model." Zeitschrift für Naturforschung A 64, no. 3-4 (2009): 185–99. http://dx.doi.org/10.1515/zna-2009-3-405.

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Abstract We study, within a mean-field approach, the stationary states of the kinetic metamagnetic spin −3/2 Blume-Emery-Griffiths model under the presence of a time-varying (sinusoidal) magnetic field.We use the Glauber-type stochastic dynamics to describe the time evolution of the system. The behaviour of the time dependence of the average order parameters in a period, which are also called the dynamic order parameters, as functions of the reduced temperature are investigated. The natures (continuous or discontinuous) of the transitions are characterized by investigating the behaviours of th

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8

Md., Jasim Uddin, Sohel Rana S.M., and Motaleb Hossain Md. "COMPLEXITY ANALYSIS TO FRACTIONAL ORDER ENZYME MODEL." INTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH 11, no. 01 (2023): 3178–85. https://doi.org/10.5281/zenodo.7556759.

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This study examines a discrete-time enzyme model with Caputo fractional order. We look into the existence and uniqueness of fixed points in the discrete dynamic model and discover parametric criteria for their local asymptotic stability. Additionally, it is demonstrated using bifurcation theory that the system experiences Period-Doubling and Neimark-Sacker bifurcation in a constrained area around the singular positive fixed point and that an invariant circle would result. It has been determined that the parameter values and the initial conditions have a significant impact on the dynamical beha

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9

George Maria Selvam, A., and D. Abraham Vianny. "Behavior of a Discrete Fractional Order SIR Epidemic Model." International Journal of Engineering & Technology 7, no. 4.10 (2018): 675. http://dx.doi.org/10.14419/ijet.v7i4.10.21310.

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In this paper we investigate the dynamical behavior of a SIR epidemic model of fractional order. Disease Free Equilibrium point, Endemic Equilibrium point and basic reproductive number are obtained. Time series plots, phase portraits and bifurcation diagrams are presented for suitable parameter values. Also some numerical examples are provided to illustrate the dynamics of the system.

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10

Mielczarek, Jakub. "Big Bang as a Critical Point." Advances in High Energy Physics 2017 (2017): 1–5. http://dx.doi.org/10.1155/2017/4015145.

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This article addresses the issue of possible gravitational phase transitions in the early universe. We suggest that a second-order phase transition observed in the Causal Dynamical Triangulations approach to quantum gravity may have a cosmological relevance. The phase transition interpolates between a nongeometric crumpled phase of gravity and an extended phase with classical properties. Transition of this kind has been postulated earlier in the context of geometrogenesis in the Quantum Graphity approach to quantum gravity. We show that critical behavior may also be associated with a signature

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11

SIMIONATO, M. "RELAXING NEAR THE CRITICAL POINT." International Journal of Modern Physics A 16, supp01c (2001): 1274–76. http://dx.doi.org/10.1142/s0217751x0100951x.

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I present an analysis of the relaxation rate for long-wavelength fluctuations of the order parameter in an O(N) scalar theory near the critical point. Our motivation is to model the non-equilibrium dynamics of critical fluctuations near the chiral phase transition in QCD. In the next-to-leading order in the large N expansion we find a critical slowing down regime, i.e. an increasing of the relaxation time of long wavelengths fluctuations. This result suggests, for near critical systems, relevant deviations from thermal equilibrium for the distribution functions of low-energy particles and coul

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12

Song, Yubo, and Haibo Mu. "Integrated Optimization of Input/Output Point Assignment and Twin Stackers Scheduling in Multi-Input/Output Points Automated Storage and Retrieval System by Ant Colony Algorithm." Mathematical Problems in Engineering 2022 (May 21, 2022): 1–18. http://dx.doi.org/10.1155/2022/5997095.

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This paper researches the problem of operational optimization in the multiple-input/output (multi-I/O) points automated storage and retrieval system (AS/RS), where the destination addresses of the retrieval requests are unknown, twin stackers work simultaneously in the same aisle and cannot cross each other, and each stacker can carry two cargo units at the same time. The problem is formalized as an integrated optimization problem with noncrossing constraint for the I/O point assignment and the storage/retrieval (S/R) requests grouping and scheduling. The complexity of the problem is analyzed

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13

SHI, Ting-Ting, Lu-Dan ZHANG, Shuai-Ning ZHANG, and Wei ZHANG. "High-order exceptional point in a quantum system of two qubits with interaction." Acta Physica Sinica 71, no. 13 (2022): 130303. http://dx.doi.org/10.7498/aps.70.20220716.

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<sec>As one of the essential features in non-Hermitian systems coupled with environment, the exceptional point has attracted much attention in many physical fields. The phenomena that eigenvalues and eigenvectors of the system simultaneously coalesce at the exceptional point are also one of the important properties to distinguish from Hermitian systems. In non-Hermitian systems with parity-time reversal symmetry, the eigenvalues can be continuously adjusted in parameter space from all real spectra to pairs of complex-conjugate values by crossing the phase transition from the parity-time

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14

Singh, Ompal, Saurabh Panwar, and P. K. Kapur. "Determining Software Time-to-Market and Testing Stop Time when Release Time is a Change-Point." International Journal of Mathematical, Engineering and Management Sciences 5, no. 2 (2020): 208–24. http://dx.doi.org/10.33889/ijmems.2020.5.2.017.

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In software engineering literature, numerous software reliability growth models have been designed to evaluate and predict the reliability of the software products and to measure the optimal time-to-market of the software systems. Most existing studies on software release time assessment assumes that when software is released, its testing process is terminated. In practice, however, the testing team releases the software product first and continues the testing process for an added period in the operational phase. Therefore, in this study, a coherent reliability growth model is developed to pre

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15

Ali, Ajmal, Tayyaba Akram, Azhar Iqbal, Poom Kumam, and Thana Sutthibutpong. "A numerical approach for 2D time-fractional diffusion damped wave model." AIMS Mathematics 8, no. 4 (2023): 8249–73. http://dx.doi.org/10.3934/math.2023416.

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<abstract><p>In this article, we introduce an approximation of the rotated five-point difference Crank-Nicolson R(FPCN) approach for treating the second-order two-dimensional (2D) time-fractional diffusion-wave equation (TFDWE) with damping, which is constructed from two separate sets of equations, namely transverse electric and transverse magnetic phases. Such a category of equations can be achieved by altering second-order time derivative in the ordinary diffusion damped wave model by fractional Caputo derivative of order $ \alpha $ while $ 1 &lt; \alpha &lt; 2 $. The sug

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16

Imbert, Mariano, and Xiao Xing Li. "Automatic Global Registration of 3D Point Clouds for Reverse Engineering and Inspection Processes." Applied Mechanics and Materials 110-116 (October 2011): 4907–13. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4907.

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Registration of 3D point clouds is one of the most fundamental phases during the process of reverse engineering and most challenging at the same time. This phase consists on matching two or more different point clouds into one data set in order to have them share the same global coordinate system. In this paper we present a new approach for automatic registration of 3D point clouds that uses the genetic algorithm (GA) as a global optimization method. We introduce a trips extraction technique for rough registration, which extracts important geometric information from a point cloud. Another cont

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17

Xin, Rui Hao, Chun Yang Wang, Xue Lian Liu, Ming Qiu Li, and Duan Yuan Bai. "Robust Fractional Order Proportional Integral Control for Large Time-Delay System." Applied Mechanics and Materials 716-717 (December 2014): 1614–19. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1614.

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In this paper, a new control method for large time delay system is proposed. Firstly, the decreasing time delay controller is used to remodel large delay time plant into small delay time plant. Then, a fractional robust proportional-integral controller (FOPI) is designed, using the phase margin and cut-off frequency at a specified point in the Bode plot of flat robust conditions, to guarantee the desired control performance and the robustness of the high order system to the gain order system. For comparison between the fractional order proportional integral controller and the traditional integ

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18

Cui, Zhoujin, Zisen Mao, and Xiaorong Zhang. "Resonances of a fractional-order biomedical model with time delay state feedback." ITM Web of Conferences 45 (2022): 01024. http://dx.doi.org/10.1051/itmconf/20224501024.

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In the present paper, the primary resonance of a fractional-order Willis aneurysm system with time-delay state feedback control is studied. Using the multiple scale method, the amplitude and phase equations are obtained. The first order approximate solution is derived and the influence of time delay on resonance is studied. The concept of equivalent damping related to time-delay feedback is proposed, and the reasonable selection of feedback gain and time delay is discussed from the point of view of vibration control. The frequency response and external excitation response curves of the system

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19

Shetty, P. B., K. I. Maddani, K. S. Mahalaxmi, and Ch S. Lakshmi. "On the dielectric properties of nano-phased lanthanum doped nickel ferrites." Digest Journal of Nanomaterials and Biostructures 19, no. 2 (2024): 559–70. http://dx.doi.org/10.15251/djnb.2024.192.559.

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La-doped Ni-based ferrites (NiFe2O4) exhibit a single-phased cubic spinel structure. ε′ exhibits a quick decline in the low-frequency regime (upto 100 KHz) and a sluggish reduction in the high-frequency range (> 100 KHZ). Tanẟ values are found to be of the order of 10-2 . Variation in Tanẟ and ac values in D relates to conductivity. Cole-Cole plots portray a single semicircle. This points towards the contribution of resistance induced by grain boundaries. The variations in resistance, capacitance, and relaxation time obtained from Z′ vs. Z″ (Cole Cole graph) plots are due to the hopping mec

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20

Khan, Zareen A., Javed Khan, Sayed Saifullah, and Amir Ali. "Dynamics of Hidden Attractors in Four-Dimensional Dynamical Systems with Power Law." Journal of Function Spaces 2022 (March 27, 2022): 1–22. http://dx.doi.org/10.1155/2022/3675076.

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Four-dimensional continuous chaotic models with Caputo fractional derivative are presented. Fixed point theory is used to investigate the existence and uniqueness of complex systems. The dynamical properties are studied, including the Lyapunov exponent, phase portrait, and time series analysis. The hyperchaotic nature of each system is revealed by the positive exponents. The numerical method is introduced to describe the influence of the order of the Caputo fractional derivative. The phase portraits are presented to investigate the behavior and effect of some key parameters and fractional orde

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21

Sacramento, Pedro D. "Entanglement and Fidelity: Statics and Dynamics." Symmetry 15, no. 5 (2023): 1055. http://dx.doi.org/10.3390/sym15051055.

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Herein, aspects of entanglement and fidelity and their use in condensed matter systems are briefly reviewed. Both static and time-dependent situations are considered. Different signatures of phases and phase transitions are discussed, including the dynamic aspects of the evolution across a critical point. Some emphasis is placed on the use of entanglement in phase transitions with no clear order parameters and no symmetry breaking.

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22

Yang, Haiyan, Xuhai Yang, Zhe Zhang, Baoqi Sun, and Weijin Qin. "Evaluation of the Effect of Higher-Order Ionospheric Delay on GPS Precise Point Positioning Time Transfer." Remote Sensing 12, no. 13 (2020): 2129. http://dx.doi.org/10.3390/rs12132129.

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In high-precision GPS precise point positioning (PPP) time transfer, errors caused by the effect of ionosphere delay have to be corrected. Usually the ionosphere-free combinations of the pseudo code and the carrier phase is used in GPS PPP data processing, and it effectively eliminates the effect of the first-order ionospheric delay. This study quantitatively analyzes the errors caused by higher-order ionospheric (Ion2+) delays in precise PPP time transfer. Data of two 7-day test periods, including low and moderate ionospheric conditions, from 20 stations located in middle- and low-latitude, w

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23

Yasuda, Hidenori. "Modified Verlet Method Involving Second-Order Mid-Point Rule Applied to Balls Falling in One-Dimensional Potentials." East Asian Journal on Applied Mathematics 1, no. 1 (2011): 1–19. http://dx.doi.org/10.4208/eajam.160909.310310a.

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AbstractA modified Verlet method which involves a kind of mid-point rule is constructed and applied to the one-dimensional motion of elastic balls of finite size, falling under constant gravity in space and then under the chemical potential in the interface region of phase separation within a two-liquid film. When applied to the simulation of two balls falling under constant gravity in space, the new method is found to be computationally superior to the usual Verlet method and to Runge–Kutta methods, as it allows a larger time step for comparable accuracy. The main purpose of this paper is to

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24

Huang, Sunhua, and Jie Wang. "Fixed-time fractional-order sliding mode control for nonlinear power systems." Journal of Vibration and Control 26, no. 17-18 (2020): 1425–34. http://dx.doi.org/10.1177/1077546319898311.

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In this study, a fractional-order sliding mode controller is effectively proposed to stabilize a nonlinear power system in a fixed time. State trajectories of a nonlinear power system show nonlinear behaviors on the angle and frequency of the generator, phase angle, and magnitude of the load voltage, which would seriously affect the safe and stable operation of the power grid. Therefore, fractional calculus is applied to design a fractional-order sliding mode controller which can effectively suppress the inherent chattering phenomenon in sliding mode control to make the nonlinear power system

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25

Tang, He, Jie Dong, Lan Zhang, and Wenke Sun. "Deformation of a spherical, viscoelastic, and incompressible Earth for a point load with periodic time change." Geophysical Journal International 222, no. 3 (2020): 1909–22. http://dx.doi.org/10.1093/gji/ggaa268.

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SUMMARY Planetary-scale mass redistributions occur on Earth for certain spatiotemporal periods, and these surface mass changes excite the global periodic loading deformations of a viscoelastic Earth. However, the characteristics of periodic viscoelastic deformations have not been well investigated even in a simple earth model. In this study, we derive the semi-analytical Green's functions (fully analytical Love numbers) for long-standing point sources with given periods using a modified asymptotic scheme in a homogeneous Maxwell spherical earth model. Here, the asymptotic scheme is needed in o

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26

Elsobeiey, Mohamed, and Ahmed El-Rabbany. "On Modelling of Second-Order Ionospheric Delay for GPS Precise Point Positioning." Journal of Navigation 65, no. 1 (2011): 59–72. http://dx.doi.org/10.1017/s0373463311000531.

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Recent developments in GPS positioning show that a user with a standalone GPS receiver can obtain positioning accuracy comparable to that of carrier-phase-based differential positioning. Such technique is commonly known as Precise Point Positioning (PPP). A significant challenge of PPP, however, is that about 30 minutes or more is required to achieve centimetre to decimetre-level accuracy. This relatively long convergence time is a result of the un-modelled GPS residual errors. A major residual error component, which affects the convergence of PPP solution, is higher-order Ionospheric Delay (I

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27

Xu, Qian, and Haitao Wang. "Sound Field Modeling Method and Key Imaging Technology of an Ultrasonic Phased Array: A Review." Applied Sciences 12, no. 16 (2022): 7962. http://dx.doi.org/10.3390/app12167962.

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An ultrasonic phased array consists of multiple ultrasonic probes arranged in a certain regular order, and the delay time of the excitation signal sent to each array element is controlled electronically. The testing system model based on ultrasonic propagation theory is established to obtain a controllable and focused sound field, which has theoretical and engineering guiding significance for the calculation and analysis of ultrasonic array sound fields. Perfecting array theory and exploring array imaging methods can obtain rich acoustic information, provide more intuitive and reliable researc

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28

Ojedo-Martín, Cristina, Elena Sonsoles Rodríguez-López, María Barbaño Acevedo-Gómez, Edurne Úbeda-D’Ocasar, María Victoria de-Diego, and Beatriz Lara. "At What Point in the Menstrual Cycle Are the Pelvic Floor Muscles at Their Weakest?" Journal of Functional Morphology and Kinesiology 9, no. 3 (2024): 135. http://dx.doi.org/10.3390/jfmk9030135.

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Pelvic floor muscle (PFM) strength is a critical factor for optimal pelvic floor function. Fluctuations in strength values based on different phases of the menstrual cycle (MC) could signify a need for a paradigm shift in evaluating, approaching, and planning training. This research aims to examine and contrast the pelvic floor muscle strength during different phases of the menstrual cycle. A prospective observational study employing digital assessment with the modified Oxford scale and vaginal dynamometry measurements was performed, in order to assess the baseline strength and the contraction

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29

Saikhum, Poramin, Christoph Herold, and Mohamad Lukman Aidid Mohd Yusoff. "Cumulants of the chiral order parameter in a nonequilibrium Bjorken expansion with a QCD critical point." Journal of Physics: Conference Series 2145, no. 1 (2021): 012016. http://dx.doi.org/10.1088/1742-6596/2145/1/012016.

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Abstract To understand experimentally obtained net-proton number cumulants in the search for the QCD critical point, we study a dynamical model based on an effective quark-meson Lagrangian with chiral symmetry. We investigate the evolution of the expanding medium created in a heavy-ion collision using a spatially homogeneous fluid and a time-dependent order parameter, the sigma field evolved by a Langevin equation. We extract cumulants of the sigma field along a parametrized freeze-out curve and match the obtained freeze-out points to corresponding beam energies. These cumulants can be related

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CICUTA, G. M., L. MOLINARI, and E. MONTALDI. "LARGE N PHASE TRANSITIONS IN LOW DIMENSIONS." Modern Physics Letters A 01, no. 02 (1986): 125–29. http://dx.doi.org/10.1142/s021773238600018x.

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Quantum models with fields in matrix representations of classical groups exhibit a high order phase transition in the limit of large order of the group. In zero dimension of space-time the Green functions of the newly found branch are those of a Gaussian model; in one dimension, the physical mass vanishes at the critical point.

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31

Penn, Chad J., Mark R. Williams, James Camberato, Nicholas Wenos, and Hope Wason. "Desorption Kinetics of Legacy Soil Phosphorus: Implications for Non-Point Transport and Plant Uptake." Soil Systems 6, no. 1 (2022): 6. http://dx.doi.org/10.3390/soilsystems6010006.

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Soil phosphorus (P) solubility and kinetics partly control dissolved P losses to surface water and uptake by plants. While previous studies have focused on batch techniques for measuring soil P desorption kinetics, flow-through techniques are more realistic because they simulate P removal from the system, akin to runoff, leaching, and plant uptake. The objectives were to measure soil P desorption by a flow-through technique at two flow rates and several batch methods, and utilize both for understanding how flow rate impacts the thermodynamics and kinetics of soil P desorption. Desorption obeye

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32

Temizer, Ümüt. "Dynamic behavior of the spin-1/2 Ising Model in an oscillating external magnetic field." Bozok Journal of Science 3, no. 1 (2025): 34–41. https://doi.org/10.70500/bjs.1681654.

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The dynamic phase transition (DPT) temperatures and the dynamic phase diagrams are obtained for spin-1/2 Ising system under the presence of a time-dependent oscillating external magnetic field using the method that was purposed by Meijer and Edwards [ANNALS of PHYSICS, 54, 240 (1969)] within the framework of the Bethe or constant coupling theory. The time variation of magnetization is investigated to find the phases in the system. Thermal behavior of the average magnetization is studied to characterize the nature (continuous and discontinuous) of transitions and to obtain the dynamic phase tra

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33

Pang, Zhan, and Frank Y. Chen. "COORDINATED PRICING AND INVENTORY CONTROL WITH BATCH PRODUCTION AND ERLANG LEADTIMES." Probability in the Engineering and Informational Sciences 28, no. 4 (2014): 529–63. http://dx.doi.org/10.1017/s0269964814000126.

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This paper addresses a joint pricing and inventory control problem for a batch production system with random leadtimes. Assume that demand arrives according to a Poisson process with a price-dependent arrival rate. Each replenishment order contains a single batch of a fixed lot size. The replenishment leadtime follows an Erlang distribution, with the number of completed phases recording the delivery state of outstanding orders. The objective is to determine an optimal inventory-pricing policy that maximizes total expected discounted profit or long-run average profit. We first show that when th

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34

Khan, Jesmin, Sharif Bhuiyan, and Reza Adhami. "Feature Point Extraction from the Local Frequency Map of an Image." Journal of Electrical and Computer Engineering 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/182309.

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We propose a novel technique for detecting rotation- and scale-invariant interest points from the local frequency representation of an image. Local or instantaneous frequency is the spatial derivative of the local phase, where the local phase of any signal can be found from its Hilbert transform. Local frequency estimation can detect edge, ridge, corner, and texture information at the same time, and it shows high values at those dominant features of an image. For each pixel, we select an appropriate width of the window for computing the derivative of the phase. In order to select the width of

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Zhang, Dongliang, Ji Wang, and Wenhao You. "The reliability analysis of pressurized water reactor safety injection system based on GO-FLOW." IOP Conference Series: Earth and Environmental Science 1171, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1755-1315/1171/1/012013.

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Abstract The safety injection system (RIS)is a large and complex fluid system in a nuclear power plant. Its central role is to ensure the safety of the core in the event of a breach event in the first circuit of the nuclear power plant. In order to investigate the timing of the safe injection system at the time of a Small-Break Loss-Of-Coolant Accident (SBLOCA), this paper uses the GO-FLOW method to model seven time points in the three operational phases of the safe injection system. The calculation is completed in conjunction with the failure rate of each component to give the reliability of

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Sokić, Emir, Almir Salihbegović, and Samim Konjicija. "A Comprehensive Study of Shape Orientation Methods for Extraction of Phase-Preserving Fourier Descriptors." B&H Electrical Engineering 13, no. 1 (2019): 71–79. http://dx.doi.org/10.2478/bhee-2019-0009.

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Abstract The magnitude-based Fourier descriptors (FD) are frequently used in shape-based image retrieval, due to their efficiency and effectiveness. Unlike the phase-preserving Fourier descriptors, the magnitude-based Fourier descriptors are inherently invariant under rotation and starting point change, but they discard all valuable information contained in the phase of the Fourier coefficients (FCs). In order to preserve the coefficients’ phase, the orientation and starting point of the shape must be determined. In this paper, we conducted a comprehensive evaluation of different state-of-the-

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Saranya Palanivelu and Ekambaram Chandrasekaran. "Comparative Analysis of Inventory Management System with Two-Phase Time-dependent Demand and Shortages under Tolerable Slack of Payment for Deteriorating Goods." Journal of Advanced Research in Applied Sciences and Engineering Technology 34, no. 1 (2023): 116–32. http://dx.doi.org/10.37934/araset.34.1.116132.

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In actual commercial transactions, the supplier frequently gives the merchant a maximum permitted settlement delay in order to boost sales. In order to account for these variations and assume time-varying holding costs and shortages, this research analyses a time-dependent two-phase ramp curve demand under the allowable slack of payment model for goods with a limited life span. The demand rate for the nonlinear ramp curve is deterministic, changes over time until a pivotal moment, and remains constant. It is presumed that the breakthrough point happened within the cycle duration. Two scenarios

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Yang, Qing, Zhongyu Li, Junao Li, et al. "A Novel Bistatic SAR Maritime Ship Target Imaging Algorithm Based on Cubic Phase Time-Scaled Transformation." Remote Sensing 15, no. 5 (2023): 1330. http://dx.doi.org/10.3390/rs15051330.

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Due to the advantages of flexible configuration, bistatic synthetic aperture radar (BiSAR) has the ability to effectively observe from various visual angles, such as forward view area and squint area, and has good anti-jamming characteristics. It can be applied to the surveillance of ship targets on the sea and is gradually gaining an increasing amount of attention. However, for ship targets with complex motions on the sea surface, such as maneuvering targets or ship targets under high sea conditions, the high-order Doppler frequency of the scattering points is always spatial variation (relate

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Shchelchkov, K. A. "On the problem of controlling a second-order nonlinear system by means of discrete control under disturbance." Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki 34, no. 3 (2024): 435–48. http://dx.doi.org/10.35634/vm240308.

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The problem of bringing a trajectory to a neighborhood of zero under disturbance is considered in terms of a differential pursuit game. The dynamics are described by a nonlinear autonomous system of second-order differential equations. The set of values of the pursuer's controls is finite, and that of the evader (disturbance) is compact. The goal of the control, that is, the goal of the pursuer, is to bring, within a finite time, the trajectory to any predetermined neighborhood of zero, regardless of the actions of the disturbance. To construct the control, the pursuer knows only the phase coo

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Hammad, Ma’mon Abu, Louiza Diabi, Amer Dababneh, et al. "On New Symmetric Fractional Discrete-Time Systems: Chaos, Complexity, and Control." Symmetry 16, no. 7 (2024): 840. http://dx.doi.org/10.3390/sym16070840.

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This paper introduces a new symmetric fractional-order discrete system. The dynamics and symmetry of the suggested model are studied under two initial conditions, mainly a comparison of the commensurate order and incommensurate order maps, which highlights their effect on symmetry-breaking bifurcations. In addition, a theoretical analysis examines the stability of the zero equilibrium point. It proves that the map generates typical nonlinear features, including chaos, which is confirmed numerically: phase attractors are plotted in a two-dimensional (2D) and three-dimensional (3D) space, bifurc

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Ha, Seung-Yeal, Javier Morales, and Yinglong Zhang. "Kuramoto order parameters and phase concentration for the Kuramoto-Sakaguchi equation with frustration." Communications on Pure & Applied Analysis 20, no. 7-8 (2021): 2579. http://dx.doi.org/10.3934/cpaa.2021013.

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<p style="text-indent:20px;">We study phase concentration for the Kuramoto-Sakaguchi(K-S) equation with frustration via detailed estimates on the dynamics of order parameters. The Kuramoto order parameters measure the overall degree of phase concentrations. When the coupling strength is sufficiently large and the size of frustration parameter is sufficiently small, we show that the amplitude order parameter has a positive lower bound uniformly in time, and we also show that the total mass concentrates on the translated phase order parameter by a frustration parameter asymptotically, wher

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KAPPLER, STEFAN, and CHRISTIAN BORGS. "EQUAL WEIGHT VERSUS EQUAL HEIGHT —A CONTROVERSY IN FINITE-SIZE SCALING THEORY." International Journal of Modern Physics C 03, no. 05 (1992): 1099–107. http://dx.doi.org/10.1142/s0129183192000725.

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Describing asymmetric first-order phase transitions by an order parameter distribution, there is a controversy in the literature concerning the relative normalization of the two occurring peaks. There are two rules for normalizing the distribution, called the “equal weight”-rule and the “equal height”-rule, which lead to different predictions of the finite-size scaling. We tested these predictions for an asymmetric model with two co-existing phases by means of a Monte Carlo simulation. We find overwhelming numerical evidence in favour of the “equal weight”-rule, showing at the same time that t

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Hu, Han-Ping, Jia-Kun Wang, and Fei-Long Xie. "Dynamics Analysis of a New Fractional-Order Hopfield Neural Network with Delay and Its Generalized Projective Synchronization." Entropy 21, no. 1 (2018): 1. http://dx.doi.org/10.3390/e21010001.

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In this paper, a new three-dimensional fractional-order Hopfield-type neural network with delay is proposed. The system has a unique equilibrium point at the origin, which is a saddle point with index two, hence unstable. Intermittent chaos is found in this system. The complex dynamics are analyzed both theoretically and numerically, including intermittent chaos, periodicity, and stability. Those phenomena are confirmed by phase portraits, bifurcation diagrams, and the Largest Lyapunov exponent. Furthermore, a synchronization method based on the state observer is proposed to synchronize a clas

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Conklin, William E. "Legal Time." Canadian Journal of Law & Jurisprudence 31, no. 2 (2018): 281–322. http://dx.doi.org/10.1017/cjlj.2018.14.

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This article claims that legal time has excluded and submerged an important sense of time inside structured time. Structured time has two forms. Each form of structured time identifies a beginning to a legal order (droit,Recht) as a whole. The one form has focussed upon a critical date. The critical date is exemplified by a basic text, such as the Constitution, or the judicially identified date of settlement, sovereignty or territorial control of a territory by the state. The second form of structured time has begun with the judicial recognition of a value such as the rule of law, the protecti

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Xu, Shaoguang, Jialu Long, Jinling Wang, and Wenhao Zhang. "An Efficient Method to Compensate Receiver Clock Jumps in Real-Time Precise Point Positioning." Remote Sensing 14, no. 20 (2022): 5222. http://dx.doi.org/10.3390/rs14205222.

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In global navigation satellite systems (GNSSs)-based positioning, user receiver clock jump is a common phenomenon on the low-cost receiver clocks and can break the continuity of observation time tag, carrier phase and pseudo range. The discontinuity may affect precise point positioning-related parameter estimation, including receiver clock error, position, troposphere and ionosphere parameters. It is important to note that these parameters can be used for timing, positioning, atmospheric inversion and so on. In response to this problem, the receiver clock jumps are divided into two types. The

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Kondapalli, Soumya, Arjuna Madanayake, and Len Bruton. "Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters." International Journal of Antennas and Propagation 2012 (2012): 1–19. http://dx.doi.org/10.1155/2012/234263.

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A design method and an FPGA-based prototype implementation of massively parallel systolic-array VLSI architectures for 2nd-order and 3rd-order frequency-planar beam plane-wave filters are proposed. Frequency-planar beamforming enables highly-directional UWB RF beams at low computational complexity compared to digital phased-array feed techniques. The array factors of the proposed realizations are simulated and both high-directional selectivity and UWB performance are demonstrated. The proposed architectures operate using 2's complement finite precision digital arithmetic. The real-time through

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Garcia-Fernandez, Miquel, Isaac Hoyas-Ester, Alex Lopez-Cruces, Malgorzata Siutkowska, and Xavier Banqué-Casanovas. "Accuracy in WiFi Access Point Position Estimation Using Round Trip Time." Sensors 21, no. 11 (2021): 3828. http://dx.doi.org/10.3390/s21113828.

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WiFi Round Trip Time (RTT) unlocks meter level accuracies in user terminal positions where no other navigation systems, such as Global Navigation Satellite Systems (GNSS), are able to (e.g., indoors). However, little has been done so far to obtain a scalable and automated system that computes the position of the WiFi Access Points (WAP) using RTT and that is able to estimate, in addition to the position, the hardware biases that offset the WiFi ranging measurements. These biases have a direct impact on the ultimate position accuracy of the terminals. This work proposes a method in which the co

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Azarskov, Valerii, Klavdiia Solovchuk, Oleksandr Volkov, and Leonid Zhiteckii. "Adaptive suboptimal control of some discrete-time plants with nonstochastic bounded disturbances." International Scientific Technical Journal "Problems of Control and Informatics" 69, no. 2 (2024): 20–32. http://dx.doi.org/10.34229/1028-0979-2024-2-2.

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This paper deals with the adaptive suboptimal control of linear, discrete-time, time-invariant, minimum phase, scalar plants in the presence of nonstochastic bounded unmeasurable disturbances whose upper and lower bounds, which may be asymmetric, are assumed to be unknown a priori. Additional assumption is that an order of the difference equation describing the plant is known a priori. The distinguishing feature of the problem stated in this paper is that neither bounds on the unmeasured disturbances, nor bounds on an allowable region to which the unknown plant parameters belong are assumed to

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ARKIN, H., and T. ÇELIK. "STUDY OF PHASE CONVERSION IN THREE-DIMENSIONAL q = 3 POTTS MODEL." International Journal of Modern Physics C 11, no. 07 (2000): 1313–20. http://dx.doi.org/10.1142/s0129183100001152.

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In order to see the phase conversion taking place in a weak first-order phase transition, we have simulated the q = 3 state Potts model in three dimensions and studied the time evolutions of oriented clusters forming after a rapid temperature quench. Our results indicate that the phase conversion mechanism following a deep temperature quench is spinodal decomposition while a rather shallow quench to temperatures near the phase transition point proceeds through usual nucleation.

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Ertaş, Mehmet. "The dynamic magnetic behaviors of the Blume–Capel Ising bilayer system." Modern Physics Letters B 29, no. 35n36 (2015): 1550236. http://dx.doi.org/10.1142/s021798491550236x.

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The dynamic magnetic behaviors of the spin-1 Blume–Capel Ising bilayer system (BCIS) are studied in an oscillating external magnetic field on a two-layer square lattice by utilizing the mean field theory (MFT) based on Glauber-type stochastic dynamics [dynamic mean field theory (DMFT)]. The dynamic equations describing the time-dependencies of the average magnetizations are obtained with the Master equation. The dynamic phases in this system are found by solving these dynamic equations. The temperature dependence of the dynamic order parameters is examined to characterize the nature (continuou

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