Results 21 to 30 of about 5,045,034 (354)
On Internal Structure, Categorical Structure, and Representation [PDF]
Philosophy of Science, 2022 AbstractIf categorical equivalence is a good criterion of theoretical equivalence, then it would seem that if some class of mathematical structures is represented as a category, then any other class of structures categorically equivalent to it will have the same representational capacities.
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Internal Structure of Einstein-Yang-Mills Black Holes [PDF]
, 1996 It is shown that a generic black hole solution of the SU(2) Einstein-Yang-Mills equations develops a new type of an infinitely oscillating behavior near the singularity.
A. Bonnano +26 more
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Highlights of Astronomy, 1995 In this section I concentrate on the spherically symmetric aspects of solar structure, corresponding to “classical” stellar evolution models. Such models are characterized by a number of simplifying assumptions, as well as by the physical properties of matter in the star, conveniently labeled “micro-physics”.
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The Evolution and Internal Structure of Jupiter and Saturn with Compositional Gradients [PDF]
, 2016 The internal structure of gas giant planets may be more complex than the commonly assumed core-envelope structure with an adiabatic temperature profile.
Helled, R. +3 more
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Growing networks of overlapping communities with internal structure [PDF]
, 2016 We introduce an intuitive model that describes both the emergence of community structure and the evolution of the internal structure of communities in growing social networks.
Allard, Antoine +3 more
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Internal space structure generalization of the quintom cosmological scenario [PDF]
, 2008 We introduce the Lagrangian for a multi-scalar field configuration in a $N$-dimensional internal space endowed with a constant metric $Q_{ik}$ and generalize the quintom cosmological scenario. We find the energy momentum tensor of the model and show that
A. Einstein +12 more
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Agriculture, 2022 The focus of world governance on climate change has been on the industrial and transport sectors, yet the agricultural sector produces a lot of greenhouse gases, and this has always been ignored.
Shibin Wen, Yuxiang Hu, Hongman Liu
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A Model for Igniter Mass Flow Rate History Evaluation for Solid Rocket Motors
International Journal of Aerospace Engineering, 2019 This paper describes a zero-dimensional model for evaluating the mass flow rate history of a solid rocket motor igniter. Based on the results of an igniter-firing experiment, in which the igniter is the only source of combustion gas and no propellant is ...
Yanjie Ma +4 more
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Generation of LDPM structure formed by Voronoi cells
Acta Polytechnica CTU Proceedings, 2023 A preliminary study of an approach to internal structure generation used in lattice discrete particle models (LDPMs) [1]. The presented method used for particle generation and placement is intended to help realistically capture the internal structure of
Jan Vozáb, Jan Vorel
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An Approach to Analysing Erosive Characteristics of Two-Channel Combustion Chambers
International Journal of Aerospace Engineering, 2019 To acquire the erosive characteristics of two-channel combustion chambers, a quasi-one-dimensional internal ballistics model is proposed. Combining the model with two different erosive burning models, the modified L-R expression, and the Mukunda-Paul ...
Yanjie Ma +4 more
doaj +1 more source