Correlated measurements of UHF radar signatures, RF radiation and electric field changes from lightning

During Storm Hazards - 82, simultaneous measurements are made of radar echoes, fast and slow field changes and RF radiation from lightning. Radio frequency radiation and radar echoes are also obtained during periods when the research aircraft is struck by lightning. These data are presently used to better understand the electrical processes which occur during strikes to the aircraft. Preliminary conclusions verify that the events recorded aboard the aircraft occurred during lightning but also indicate that they occur with surprising frequency very early in the flash

Are There Topological Black Hole Solitons in String Theory?

We point out that the celebrated Hawking effect of quantum instability of black holes seems to be related to a nonperturbative effect in string theory. Studying quantum dynamics of strings in the gravitational background of black holes we find classical instability due to emission of massless string excitations. The topology of a black hole seems to play a fundamental role in developing the string theory classical instability due to the effect of sigma model instantons. We argue that string theory allows for a qualitative description of black holes with very small masses and it predicts topological solitons with quantized spectrum of masses. These solitons would not decay into string massless excitations but could be pair created and may annihilate also. Semiclassical mass quantization of topological solitons in string theory is based on the argument showing existence of nontrivial zeros of beta function of the renormalization group.Comment: 12 pages, TeX, requires phyzzx.tex, published in Gen. Rel. Grav. 19 (1987) 1173; comment added on December 18, 199

Sexual assault in marriage an exploratory investigation.

Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1986

КРИТЕРІЇ ТА РІВНІ РОЗВИТКУ ПРОФЕСІЙНОЇ РЕФЛЕКСІЇ МАЙБУТНІХ КЕРІВНИКІВ ІНСТРУМЕНТАЛЬНИХ КОЛЕКТИВІВ

This article examines the state and criteria of development of professional self- reflection of future leaders of an instrumental bands. The qualitative characteristic of levels of development of professional self-reflection is defined and four levels of development of this skill are outlined. The value and role of professional self-reflection of the leader of an instrumental band in the context of collective performance management is disclosed. It is noted that the reflexive method makes it possible to comprehend one’s own and team members’ activities, to predict one’s own actions, to form a new thinking style, to detect and anticipate problems in one’s own professional activities and improve the quality of work. We also believe that professional reflection is a necessary component of the professional education of the future leader of the instrumental ensemble and the cornerstone principle of successful management of any ensemble performance in particular.This article examines the state and criteria of development of professional self- reflection of future leaders of an instrumental bands. The qualitative characteristic of levels of development of professional self-reflection is defined and four levels of development of this skill are outlined. The value and role of professional self-reflection of the leader of an instrumental band in the context of collective performance management is disclosed. It is noted that the reflexive method makes it possible to comprehend one’s own and team members’ activities, to predict one’s own actions, to form a new thinking style, to detect and anticipate problems in one’s own professional activities and improve the quality of work. We also believe that professional reflection is a necessary component of the professional education of the future leader of the instrumental ensemble and the cornerstone principle of successful management of any ensemble performance in particular

The Cruelty of Reading: Reading and Writing in the Works of Friedrich Schelling

Friedrich Schelling has re-emerged in Anglo-Saxon philosophy as a singularly important figure in Germand Idealism, not as some mediate figure in between Kant, Fichte, and Hegel. Because Schelling\u27s works resist being subsumed into a univocal or systematic articulation, they instead invite a reading, in the sense developed by Jean-Luc Nancy, that itself is transported to the writing of his texts. In order to show the auto-immune character of Schelling\u27s writing, this thesis will turn to Schelling\u27s First Outline of a System of the Philosophy of Nature (1799), the Philosophical Investigations into the Essence of Human Freedom (1809), and the unfinished The Ages of the World (1815). These texts show that the recent resurgence of Schelling in theory and philosophy is not because of philosophy\u27s re-discovery of Schelling, but that Schelling is representative of the crisis in which theory and philosophy currently find themselves, articulating a deconstructive writing avant-la-lettre

3D global simulations of a cosmic-ray-driven dynamo in dwarf galaxies

Star-forming dwarf galaxies can be seen as the local proxies of the high-redshift building blocks of more massive galaxies according to the current paradigm of the hierarchical galaxy formation. They are low-mass objects, and therefore their rotation speed is very low. Several galaxies are observed to show quite strong magnetic fields. These cases of strong ordered magnetic fields seem to correlate with a high, but not extremely high, star formation rate. We investigate whether these magnetic fields could be generated by the cosmic-ray-driven dynamo. The environment of a dwarf galaxy is unfavourable for the large-scale dynamo action because of the very slow rotation that is required to create the regular component of the magnetic field. We built a 3D global model of a dwarf galaxy that consists of two gravitational components: the stars and the dark-matter halo described by the purely phenomenological profile proposed previously. We solved a system of magnetohydrodynamic (MHD) equations that include an additional cosmic-ray component described by the fluid approximation. We found that the cosmic-ray-driven dynamo can amplify the magnetic field with an exponential growth rate. The $e$-folding time is correlated with the initial rotation speed. The final mean value of the azimuthal flux for our models is of the order of few $\mu$G and the system reaches its equipartition level. The results indicate that the cosmic-ray-driven dynamo is a process that can explain the magnetic fields in dwarf galaxies.Comment: 6 pages, 4 figures, accepted for publication in A&

Cosmic-ray driven dynamo in the interstellar medium of irregular galaxies

Irregular galaxies are usually smaller and less massive than their spiral, S0, and elliptical counterparts. Radio observations indicate that a magnetic field is present in irregular galaxies whose value is similar to that in spiral galaxies. However, the conditions in the interstellar medium of an irregular galaxy are unfavorable for amplification of the magnetic field because of the slow rotation and low shearing rate. We investigate the cosmic-ray driven dynamo in the interstellar medium of an irregular galaxy. We study its efficiency under the conditions of slow rotation and weak shear. The star formation is also taken into account in our model and is parametrized by the frequency of explosions and modulations of activity. The numerical model includes a magnetohydrodynamical dynamo driven by cosmic rays that is injected into the interstellar medium by randomly exploding supernovae. In the model, we also include essential elements such as vertical gravity of the disk, differential rotation approximated by the shearing box, and resistivity leading to magnetic reconnection. We find that even slow galactic rotation with a low shearing rate amplifies the magnetic field, and that rapid rotation with a low value of the shear enhances the efficiency of the dynamo. Our simulations have shown that a high amount of magnetic energy leaves the simulation box becoming an efficient source of intergalactic magnetic fields.Comment: 9 pages, 6 figure