Results 1 to 10 of about 261,811 (317)
On quintessence star model and strange star [PDF]
European Physical Journal C: Particles and Fields, 2020 The astronomical observations on the accelerated expansion of the universe generate the possibility that the internal matter of the stars is not only formed by ordinary matter but also by matter with negative pressure.
Gabino Estevez-Delgado +1 more
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A High Precision Star Image Pre-Processing Method Against Earth-Atmosphere Radiation of Star Sensor [PDF]
Hangkong bingqi, 2023 Star sensors installed on near-space vehicles are susceptible to earth-atmosphere radiation. As a result, the accuracy of star extraction and the performance of celestial system is significantly degraded.
Liu Yuxin, Wang Xinlong, Hu Xiaodong, Wang Xun
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Land, 2022 This study presents a quantitative approach to exploring the spatio-functional characteristics of historic Chinese towns (HCTs) from a heritage tourism perspective.
Pan Liao +3 more
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Planar peristrophic multiplexing metasurfaces
Opto-Electronic Advances, 2023 As a promising counterpart of two-dimensional metamaterials, metasurfaces enable to arbitrarily control the wavefront of light at subwavelength scale and hold promise for planar holography and applicable multiplexing devices. Nevertheless, the degrees of
Jia Chen +5 more
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Standardization of experimental model regarding star fruit intoxication in Wistar rats suffering with nephropathy [PDF]
Acta Cirúrgica Brasileira, 2021 Purpose To present a model to reproduce the clinical condition, in order to better understand the pathophysiology of neurological impairment related to intoxication. Methods Twenty-five Wistar rats were used and divided into five groups: Shaw group (WHI)
Layla Alves Rodrigues da Silva +5 more
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Image Degradation Model for Dynamic Star Maps in Multiple Scenarios
Photonics, 2022 To meet the ground test requirements of star sensors, we establish the star map simulation algorithm and the interactive interface in multiple scenarios.
Haima Yang +8 more
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Converting neutron stars into strange stars: Instanton model [PDF]
International Journal of Modern Physics D, 2014 We calculate the quasiclassical probability to emerge the quantum fluctuation which gives rise to the quark-matter drop with interface propagating as the self-similar spherical detonation wave (DN) in the ambient nuclear matter. For this purpose, we make use of instanton method which is known in the quantum field theory.
Gurovich, Victor Ts., Fel, Leonid G.
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UAV Path Planning Model Based on R5DOS Model Improved A-Star Algorithm
Applied Sciences, 2022 In order to solve the problems of large amounts of calculation and long calculation times of the A-star algorithm in three-dimensional space, based on the R5DOS model, this paper proposes a three-dimensional space UAV path planning model.
Jian Li +4 more
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Development of Daytime Observation Model for Star Sensor and Centroiding Performance Analysis [PDF]
Journal of Astronomy and Space Sciences, 2005 A star sensor daytime observation model is developed in order to test the performance of the star sensor useful for daylight application. The centroid errors of the star sensor in the day time application are computed by using the model.
Jakyoung Nah, Yu Yi, Yong Ha Kim
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Symposium - International Astronomical Union, 1981 The current state of neutron star structure calculations is reviewed. Uncertainties in the equation of state for matter at and above nuclear density remain. The role of the delta resonance, pion condensates, and quark matter is reviewed. Despite uncertainties, we find that recent models yield stable neutron star masses which are consistent with ...
V. Canuto, Richard L. Bowers
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