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Gotowe bibliografie tematyczne / Spherical Population

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Artykuły w czasopismach

Gotowa bibliografia na temat „Spherical Population”

Autor: Grafiati

Data publikacji: 8 września 2023

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Artykuły w czasopismach na temat "Spherical Population"

1

Al-Sayyari, Tarfah M., Samah M. Fawzy, and Ahmed A. Al-Saleh. "Corneal spherical aberration in Saudi population." Saudi Journal of Ophthalmology 28, no. 3 (2014): 207–13. http://dx.doi.org/10.1016/j.sjopt.2014.03.003.

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Soker, Noam, and Eyal Subag. "A Possible Hidden Population of Spherical Planetary Nebulae." Astronomical Journal 130, no. 6 (2005): 2717–24. http://dx.doi.org/10.1086/497295.

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3

Tobler, W. "Preliminary representation of world population by spherical harmonics." Proceedings of the National Academy of Sciences 89, no. 14 (1992): 6262–64. http://dx.doi.org/10.1073/pnas.89.14.6262.

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Tobler, Waldo, Uwe Deichmann, Jon Gottsegen, and Kelly Maloy. "World population in a grid of spherical quadrilaterals." International Journal of Population Geography 3, no. 3 (1997): 203–25. http://dx.doi.org/10.1002/(sici)1099-1220(199709)3:3<203::aid-ijpg68>3.0.co;2-c.

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Asano, Hiroki, Takahiro Hiraoka, Yusuke Seki, et al. "Distribution of corneal spherical aberration in a Tanzanian population." PLOS ONE 14, no. 9 (2019): e0222297. http://dx.doi.org/10.1371/journal.pone.0222297.

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Baur, Isabella D., Gerd U. Auffarth, Ramin Khoramnia, and Grzegorz Łabuz. "Spherical Aberration of Astigmatic Corneas in a Cataract Population." Journal of Refractive Surgery 39, no. 8 (2023): 532–38. http://dx.doi.org/10.3928/1081597x-20230717-01.

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Purpose: To study the distribution of spherical aberration (SA) in astigmatic corneas in a cataract population and the relationship between magnitude of corneal astigmatism and fourth-order corneal SA. Methods: Data routinely collected using a Scheimpflug camera (Pentacam; Oculus Optikgeräte GmbH) were retrospectively analyzed. Patients with a minimum age of 60 years were included. Total corneal SA (from anterior and posterior corneal surface) was obtained for a 6-mm cor-neal area aligned with the pupil center. Exclusion criteria were insufficient measurement quality, total deviation index (Belin/Ambrósio Deviation) greater than 1.60, and corneal thickness at the thinnest point of less than 490 μm. One eye per patient was chosen randomly. Eyes were divided into low (≤ 1.00 diopters [D]), moderate (> 1.00 to ≤ 2.00 D), and high (> 2.00 D) astigmatism groups according to the Scheimpflug measurements. Results: A total of 528 eyes were included in this analysis. Low astigmatism was found in 129 patients, moderate astigmatism in 265 patients, and high astigmatism in 134 patients. Mean astigmatism was 0.68 ± 0.24, 1.45 ± 0.28, and 2.91 ± 0.95 D in the low, moderate, and high astigmatism groups, respectively. Mean corneal SA in patients with moderate and high astigmatism was higher than in the low astigmatism group. The difference reached the significance level for the comparison of low and high astigmatism groups ( P = .023). The fourth-order SA increased gradually with the magnitude of astigmatism with a slope of 0.015. Conclusions: SA was significantly larger in the cataract population with high corneal astigmatism. The increase of positive sign SA with the magnitude of astigmatism suggests that patients with moderate to high astigmatism may benefit more from intraocular lenses with negative sign SA correction. [ J Refract Surg . 2023;39(8):532–538.]

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Keaveney, Nicola, Laura Boyle, and Matt Redman. "Shaping of Planetary Nebulae by Exoplanets." Galaxies 8, no. 2 (2020): 41. http://dx.doi.org/10.3390/galaxies8020041.

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(1) Background: We investigate the hypothesis that exoplanet engulfment can help explain the observed non-spherical planetary nebula population, as a complementary shaping mechanism to the binary hypothesis. The aim is to investigate the extent to which massive planets can explain the population of non-spherical planetary nebulae; (2) Methods: This research utilises a new tool to calculate the planet-fraction of planetary nebulae progenitor stars called simsplash; (3) Results: we conclude that ∼15–30% of non-spherical planetary nebulae around single stars will have a history in which they engulfed a massive planet on the AGB; and (4) Conclusions: Engulfment of massive exoplanets may contribute significantly to the formation of non-spherical planetary nebulae around single stars, yet appears to be insufficient to explain them all.

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Kusztelak, Grzegorz, Adam Lipowski, and Jacek Kucharski. "Population Symmetrization in Genetic Algorithms." Applied Sciences 12, no. 11 (2022): 5426. http://dx.doi.org/10.3390/app12115426.

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The paper presents a memetic modification of the classical genetic algorithm by introducing a cyclic symmetrization of the population, symmetrizing the parental points around the current population leader. Such an operator provides a more spherical distribution of the population around the current leader, which significantly improves exploitation. The proposed algorithm was described, illustrated by examples, and theoretically analyzed. Its effectiveness was examined using a recognized benchmark, which includes the continuous functions test set on a multidimensional cube, to be minimized.

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Gordiyenko, O. I., Yu E. Gordiyenko, and V. O. Makedonska. "Estimation of erythrocyte population state by the spherical index distribution." Bioelectrochemistry 62, no. 2 (2004): 119–22. http://dx.doi.org/10.1016/j.bioelechem.2003.08.004.

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Fujimoto, Shin-ichiro, Masa-aki Hashimoto, Masaomi Ono, and Kei Kotake. "Nucleosynthesis in neutrino-driven, aspherical Population III supernovae." Proceedings of the International Astronomical Union 7, S279 (2011): 237–40. http://dx.doi.org/10.1017/s1743921312012987.

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AbstractWe investigate explosive nucleosynthesis during neutrino-driven, aspherical supernova (SN) explosion aided by standing accretion shock instability (SASI), based on two-dimensional hydrodynamic simulations of the explosion of 11, 15, 20, 25, 30 and 40M⊙ stars with zero metallicity. The magnitude and asymmetry of the explosion energy are estimated with simulations, for a given set of neutrino luminosities and temperatures, not as in the previous study in which the explosion is manually and spherically initiated by means of a thermal bomb or a piston and also some artificial mixing procedures are applied for the estimate of abundances of the SN ejecta.By post-processing calculations with a large nuclear reaction network, we have evaluated abundances and masses of ejecta from the aspherical SNe. We find that matter mixing induced via SASI is important for the abundant production of nuclei with atomic number ≥ 21, in particular Sc, which is underproduced in the spherical models without artificial mixing. We also find that the IMF-averaged abundances are similar to those observed in extremely metal poor stars. However, observed [K/Fe] cannot be reproduced with our aspherical SN models.

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