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Summary The paper deals with the general theory of equivalent projection. By specifying the results derived, special cases may be treated. Examples of methods are described which enable free functions to be found in a general solution. A detailed procedure of solving the problem with a numerical example is given, taking into account the optimization according to the global criterton, established for extreme angular distortion.
Dedicated to Professor Frantiek Fiala on the Centenary of his Birthday 相似文献
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Dedicated to Professor Frantiek Fiala on the Centenary of his Birthday 相似文献
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Vladislav V. Izmodenov 《Astrophysics and Space Science》2000,274(1-2):55-69
During 30 years, a big theoretical effort to understand the physical processes in the heliospheric interface has followed
the pioneer papers by Parker (1961) and Baranov et al. (1971). The heliospheric interface is a shell formed by the solar wind interaction with the ionized component of the circumsolar
local interstellar medium (LISM). For fully ionized supersonic interstellar plasma two-shocks (the termination shock and the
bow shock) and a contact discontinuity (the heliopause) are formed in the solar wind/LISM interaction. However, LISM consists
of at least of three components additional to plasma: H-atoms, galactic cosmic rays and magnetic field. The interstellar atoms
that penetrate into the solar wind, are ionized there and form pickup ions. A part of the pickup ions is accelerated to high
energies of anomalous cosmic rays (ACRs). ACRs may modify the plasma flow upstream the termination shock and in the heliosheath.
In this short review I summarize current understanding of the physical and gasdynamical processes in the heliospheric interface,
outline unresolved problems and future perspectives.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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Jan Valenta Milan Brož Jiří Málek Bedřich Mlčoch Vladislav Rapprich Zuzana Skácelová the Doupov Working Group 《Acta Geophysica》2011,59(3):597-617
The Doupovské Hory Volcanic Complex (DHVC) is the best-preserved large volcanic suite of the Cenozoic intraplate volcanism
in the Bohemian Massif. However, many uncertainties remain in the geological setting of its basement. In summer 2008, two
seismic refraction profiles ran across this area to reveal the depth of the volcanic rocks and the underlying geological structure. 相似文献
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Velocity anisotropy in granodiorite and quartzite due to the distribution of microcracks 总被引：2，自引：0，他引：2
Summary. The spatial anisotropy of P -wave velocities was investigated in spherical samples of granodiorite and quartzite and correlated with the orientation of microcracks and grain boundaries, determined optically by universal stage techniques. The preferred orientation of normals to cleavage cracks of biotite and amphibole in granodiorite correlates well with the direction of maximum velocity increase under hydrostatic pressure, although the minerals form only nine per cent of the volume. Irregular microcracks in an almost monomineral quartzite have only a very small effect on the velocity anisotropy, although they are also preferentially oriented. The nature of the microdiscontinuities is of primary importance for the velocity anisotropy observed at atmospheric and low hydrostatic pressures. 相似文献
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We present a brief review of the recent results in modeling physical processes in strongly irradiated atmospheres of unevolved companions in precataclysmic binary systems (PCB) and their light curves. Constraints on physical parameters of the hot sdws primaries, thermal instability in upper irradiated atmosphere, monochromatic albedos, the deficit of the total emergent flux compared to the incoming flux from hot sdw primary are briefly discussed. 相似文献
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