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Relevant bibliographies by topics / Three-point approximation

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Academic literature on the topic 'Three-point approximation'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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Journal articles on the topic "Three-point approximation"

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Ryabushko, A. P., та T. A. Zhur. "ρ-Libration point in the three body problem". Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series 57, № 3 (2021): 330–46. http://dx.doi.org/10.29235/1561-2430-2021-57-3-330-346.

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Herein, the restricted circular three-body problem in homogeneous and inhomogeneous media is considered. Particular attention is paid to libration points. The conditions of their existence or non-existence in the Newtonian and post-Newtonian approximations of the general theory of relativity are derived. Several regularities, new Newtonian and relativistic eﬀects arising due to the impact of the additional relativistic forces on bodies of gravitational ﬁelds of mediums in the diﬀerential equations of the motion of bodies are indicated. Using the previously derived equations of the motion of tw

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Gual-Arnau, Ximo, Maria Victoria Ibáñez Gual, and Juan Monterde. "CURVATURE APPROXIMATION FROM PARABOLIC SECTORS." Image Analysis & Stereology 36, no. 3 (2017): 233. http://dx.doi.org/10.5566/ias.1702.

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We propose an invariant three-point curvature approximation for plane curves based on the arc of a parabolic sector, and we analyze how closely this approximation is to the true curvature of the curve. We compare our results with the obtained with other invariant three-point curvature approximations. Finally, an application is discussed.

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Salajegheh, E. "Optimum design of plate structures using three-point approximation." Structural Optimization 13, no. 2-3 (1997): 142–47. http://dx.doi.org/10.1007/bf01199233.

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Mikdam, A., A. Makradi, S. Ahzi, H. Garmestani, D. S. Li, and Y. Remond. "A new approximation for the three-point probability function." International Journal of Solids and Structures 46, no. 21 (2009): 3782–87. http://dx.doi.org/10.1016/j.ijsolstr.2009.07.004.

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Guo, Xu, Koetsu Yamazaki, and Geng Dong Cheng. "A new three-point approximation approach for design optimization problems." International Journal for Numerical Methods in Engineering 50, no. 4 (2001): 869–84. http://dx.doi.org/10.1002/1097-0207(20010210)50:4<869::aid-nme56>3.0.co;2-c.

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Drumm, Eric C., Richard M. Bennett, and Gary J. Oakley. "Probabilistic response of laterally loaded piers by three-point approximation." International Journal for Numerical and Analytical Methods in Geomechanics 14, no. 7 (1990): 499–507. http://dx.doi.org/10.1002/nag.1610140704.

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Kawecki, Bartosz, Jerzy Podgórski, and Aleksandra Głowacka. "Natural plant stems modelling in a three-point bending test." MATEC Web of Conferences 252 (2019): 07001. http://dx.doi.org/10.1051/matecconf/201925207001.

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The paper presents an approach to natural plant stems numerical modelling in a three-point bending test. Introduced subject was connected with elaborating more efficient systems for harvesting energetic plants. There were modelled, and laboratory tested two types of stems – sida hermaphrodita and miscanthus giganteus. Course of proceedings for obtaining natural cross-sectional dimensions with graphical data processing was described in detail. Basing on dozens of stems slices from random parts of plants, three different cross-section approximations were proposed and computationally implemented

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Yao, Jianyao, Weimin Wu, Kun Zhang, et al. "Development of Three-Dimensional GSM-CFD Solver for Compressible Flows." International Journal of Computational Methods 14, no. 04 (2017): 1750037. http://dx.doi.org/10.1142/s0219876217500372.

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A three-dimensional (3D) Computational Fluid Dynamics (CFD) solver based on the gradient smoothing method (GSM) is developed for compressible flows based on previous research. The piecewise constant smoothing function with one-point integration scheme is implemented for gradient approximation of field variables and convective fluxes. The matrix-based method for gradient approximations is also developed to improve the numerical efficiency. Numerical examples of gradient approximations of several given functions have shown that the proposed GSM is more accurate and robust to mesh distortion. A t

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Chinh, P. Duc. "Three-point interpolation approximation for the macroscopic properties of isotropic two-component materials." Philosophical Magazine 87, no. 24 (2007): 3531–44. http://dx.doi.org/10.1080/14786430701344541.

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Devaney, Anthony J. "Generalized Projection-Slice Theorem for Fan Beam Diffraction Tomography." Ultrasonic Imaging 7, no. 3 (1985): 264–75. http://dx.doi.org/10.1177/016173468500700306.

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A generalized projection-slice theorem is derived for transmission fan beam diffraction tomography within the Born or Rytov approximations. The development is based on the use of the so-called paraxial approximation which requires that the object being probed subtend a small angle relative to the source point and to the measurement plane. Within this approximation it is shown that the transmitted field measured over a plane surface located on the opposite side of the object from the insonifying point source determines the three-dimensional spatial Fourier transform of the object profile over t

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Dissertations / Theses on the topic "Three-point approximation"

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Onari, Seiichiro, Hiroshi Kontani, and Yukio Tanaka. "Transport phenomena in a three-dimensional system close to the magnetic quantum critical point: The conserving approximation with current vertex corrections." The American Physical Society, 2006. http://hdl.handle.net/2237/7139.

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Mesbahi, Abdessamad. "Deterministic and Stochastic Economic Modeling of Hybrid Power Supply System with Photovoltaic Generators." Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/42555.

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Relevance of research. Due to the rapid deployment of the non-dispatchable (intermittent) generation sources in the smart grid, such as integration of the photovoltaic power plants and wind turbines in the distribution systems; this caused a problem of the uncertainty increase of simulation results for decision-making for power supply systems, these uncertainties of power systems are getting more and more notice. At the same time, the classical power systems models cannot give accurate simulation results. Wherein; it became necessary to define new models to represent the specific parameters of

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Chung, Chin-Yeh, and 鍾金曄. "Enhanced Three Point Approximation Technique and Optical Inspection Structural Optimization." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/35710269397855351532.

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碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>99<br>On the basis of the advanced new three-point approximation method, this thesis presents a shifting level technique combined the advanced new three-point approximation applying on structural optimization problems. Numerical examples show that the singularity can be effectively avoided by shifting level technique during optimization process. From the examination, it is verified that fewer iterations is required than other approximation optimization. The numerical error and the numbers of convergence can be reduced as well. The completed optimization proces

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Books on the topic "Three-point approximation"

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Bruhn, Mark J. Intentionality and Constraint in Conceptual Blending. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190457747.003.0005.

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This chapter proposes a systems-theoretic adjustment to conceptual blending theory with respect to the so-called generic space. In creative conceptualization, the generic space is not an optional by-product of conceptual mappings across previously and otherwise constituted input spaces, but rather their effective cause, and not by selecting for them but by massively constraining against anything not them. As a first approximation of the blend’s targeted or intended meaning, the generic space functions as an indispensable “proto-blend” that sets the parameters and satisfaction conditions for th

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Book chapters on the topic "Three-point approximation"

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Guezane-Lakoud, A., and L. Zenkoufi. "Study of Third-Order Three-Point Boundary Value Problem with Dependence on the First-Order Derivative." In Advances in Applied Mathematics and Approximation Theory. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6393-1_28.

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Polyak, Ilya. "Historical Records." In Computational Statistics in Climatology. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195099997.003.0008.

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In this chapter, the historical records of annual surface air temperature, pressure, and precipitation with the longest observational time series will be studied. The analysis of the statistically significant systematic variations, as well as random fluctuations of such records, provides important empirical information for climate change studies or for statistical modeling and long-range climate forecasting. Of course, compared with the possible temporal scales of climatic variations, the interval of instrumental observations of meteorological elements proves to be very small. For this reason, in spite of the great value of such records, they basically characterize the climatic features of a particular interval of instrumental observations, and only some statistics, obtained with their aid, can have more general meaning. Because each annual or monthly value of such records is obtained by averaging a large number of daily observations, the corresponding central limit theorem of the probability theory can guarantee their approximate normality. In spite of this, we computed the sample distribution functions for each time series analyzed below and evaluated their closeness to the normal distribution by the Kolmogorov- Smirnov criterion. As expected, the probability of the hypothesis that each of the climatic time series (annual or monthly) has a normal distribution is equal to one with three or four zeros after the decimal point. As seen in this section, the straight line least squares approximation of the climatic time series enables us to obtain very simple and easy-to-interpret information about the power of the long period climate variability. Carrying out such an approximation, we assume that the fluctuation with a period several times greater than the observational interval will become apparent as a gradual increase or decrease of the observed values. Using only a small sample, it is impossible to determine accurately the amplitude and frequency of such long-period climate fluctuation. Consequently, the straight-line model is the simplest approach in this case. Let us begin with an analysis of the annual surface air temperature time series, the observations of which are published in Bider et al., (1959), Bider and Schiiepp, (1961), Lebrijn (1954), Manlcy (1974), and in the World Weather Records (1975).

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Riggsby, Andrew M. "Representing Three Dimensions." In Mosaics of Knowledge. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190632502.003.0005.

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Ancient painting made little or no use of single-point perspective. Some modern scholars, however, have inferred from this that ancient artists and audiences lacked a sense of “space.” This chapter’s three case studies (two involving fresco painting and one low-relief stucco, all in the genre generally known as sacro-idyllic landscape) argue instead for the existence a diversity of ways of encoding spatial information. The approaches are distinct, but they show family resemblances by drawing differentially from more or less the same pool of strategies (involving color coding, scaling, and foreshortening of objects of predictable size and shape, physical overlap, narrative connection, and others). In combination, these do not determine a single spatial reading for any given work of art, but they constrain the range of plausible approximations. That several superficially diverse sets of works converge on this property shows that spatiality was important to all of them.

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Conference papers on the topic "Three-point approximation"

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Marzouk, Ahmad M., Ahmed A. Abdelmoaty, Amr Helmy, and Yehea Ismail. "TPQA: Three point quadrature approximation MPPT algorithm." In 2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS). IEEE, 2013. http://dx.doi.org/10.1109/icecs.2013.6815438.

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Khettaoui, Billal, and Mohamed Boudour. "Synchrophsor Estimation Using The Three-point Interpolated DFT Based On Polynomial Approximation." In 2018 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM). IEEE, 2018. http://dx.doi.org/10.1109/cistem.2018.8613613.

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Borovytsky, Volodymyr, Viktoriia Chorna, and Andrey Fesenko. "Three dimensional point spread function of an optical system and its approximation." In Eleventh International Conference on Correlation Optics, edited by Oleg V. Angelsky. SPIE, 2013. http://dx.doi.org/10.1117/12.2051154.

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Buranathiti, Thaweepat, Jian Cao, and Wei Chen. "A Weighted Three-Point-Based Strategy for Variance Estimation." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57363.

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In manufacturing processes, it is widely accepted that uncertainty plays an important role and should be taken into account during analysis and design processes. However, uncertainty quantification of its effects on an end-product is a very challenging task, especially when an expensive computational effort is already needed in deterministic models such as sheet metal forming simulations. In this paper, we focus our work on the variance estimation of the system response. A weighted three-point-based strategy is proposed to efficiently and effectively estimate the variance of the system respons

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Kostiuk, Vasyl O., Mykola Fedosenko, and Abdessamad Mesbahi. "The Three-Point Approximation of the Stochastic Parameter applicable for Technical and Economic Modeling of Renewable Sources." In 2020 IEEE 7th International Conference on Energy Smart Systems (ESS). IEEE, 2020. http://dx.doi.org/10.1109/ess50319.2020.9159964.

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Ahmed, Raheel, and Michael G. Edwards. "A Three-Dimensional Symmetric Positive Definite Control-Volume Distributed Multi-Point Flux Approximation for Flow Computation on Tetrahedral Grids." In SPE Reservoir Simulation Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/193919-ms.

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Arabnia, Mohammad, and Wahid Ghaly. "A Strategy for Multi-Point Shape Optimization of Turbine Stages in Three-Dimensional Flow." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59708.

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This paper presents an effective and practical shape optimization strategy for turbine stages so as to minimize the adverse effects of three-dimensional flow features on the turbine performance. The optimization method combines a genetic algorithm (GA), with a Response Surface Approximation (RSA) of the Artificial Neural Network (ANN) type. During the optimization process, the individual objectives and constraints are approximated using ANN that is trained and tested using a few three-dimensional CFD flow simulations; the latter are obtained using the commercial package Fluent. The optimizatio

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Zhang, Zhigang, Mingrui Mo, and Caizhu Wu. "Improved Phase-coordinate Fixed-point Iterative Method Based on Equivalent Admittance Approximation for Power Flow Calculation in Three-phase Distribution Systems." In 2020 4th International Conference on HVDC (HVDC). IEEE, 2020. http://dx.doi.org/10.1109/hvdc50696.2020.9292801.

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Lin, Yao, Kiran Krishnapur, Janet K. Allen, and Farrokh Mistree. "Robust Design: Goal Formulations and a Comparison of Metamodeling Methods." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dac-8608.

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Abstract In this paper, through theoretical analysis, we point out the limitations of goal formulations in previous methods for approximation-based robust design. Based on different philosophies and mathematical deduction, we propose three new methods to formulate robust design goals. Using a single variable function, we compare and contrast the use of response surface models and kriging models for approximating non-random, deterministic computer analyses in robust design with large variances of design variables in a highly nonlinear design space. Our preliminary conclusions are: 1) kriging mo

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Sheung, Hoi, Siu-Ping Mok, and Charlie C. L. Wang. "A Highly Parallel Approach to Meshing Scattered Point Data." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86936.

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In this paper, we present a parallel mesh surface generation approach for unorganized point clouds that runs on the graphics processing unit (GPU). Our approach integrates point cloud simplification, point cloud optimization, and local triangulation techniques into the same framework. The input point cloud will be processed through three steps of algorithms, which are 1) preprocessing: to generate the neighborhood table of points and estimate the normal vectors, 2) clustering: to group points into optimized clusters that minimize the shape approximation error, and 3) meshing: to connect the se

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