Inward and Outward Integral Equations and the KKR Method for Photons

In the case of electromagnetic waves it is necessary to distinguish between inward and outward on-shell integral equations. Both kinds of equation are derived. A correct implementation of the photonic KKR method then requires the inward equations and it follows directly from them. A derivation of the KKR method from a variational principle is also outlined. Rather surprisingly, the variational KKR method cannot be entirely written in terms of surface integrals unless permeabilities are piecewise constant. Both kinds of photonic KKR method use the standard structure constants of the electronic KKR method and hence allow for a direct numerical application. As a by-product, matching rules are obtained for derivatives of fields on different sides of the discontinuity of permeabilities. Key words: The Maxwell equations, photonic band gap calculationsComment: (to appear in J. Phys. : Cond. Matter), Latex 17 pp, PRA-HEP 93/10 (exclusively English and unimportant misprints corrected

The extended Malkus-Robbins dynamo as a perturbed Lorenz system

Recent investigations of some self-exciting Faraday-disk homopolar dynamo ([1-4]) have yielded the classic Lorenz equations as a special limit when one of the principal bifurcation parameters is zero. In this paper we focus upon one of those models [3] and illustrate what happens to some of the lowest order unstable periodic orbits as this parameter is increased from zero

On a scale-invariant Fermi gas in a time-dependent harmonic potential

We investigate a scale-invariant two-component Fermi gas in a time-dependent isotropic harmonic potential. The exact time evolution of the density distribution in position space in any spatial dimension is obtained. Two experimentally relevant examples, an abrupt change and a periodic modulation of the trapping frequency are solved. Small deviations from scale invariance and isotropy of the confinement are addressed within first order perturbation theory. We discuss the consequences for experiments with ultracold quantum gases such as the excitation of a tower of undamped breathing modes and a new alternative for measuring the Tan contact.Comment: 6+3 pages, 2 figures; revised and extended versio

Державне управління якістю вищої освіти: менеджмент на рівні особистості

The article defined the directions of state management of the higher education quality, with taking into account peculiarities of manifestation (perception) of its contents on the individuality level. The article draws attention to the importance of aim to obtain higher education for ensuring its quality and also determined the place and role of the state in the corresponding process. In addition, the article determines the place and role of career guidance work in the system of higher education quality assurance, and presents a list of basic normative legal documents, which regulate relevant field of work. The article contains proposals for improving the normative legal mechanism of state management of the higher education quality.В статті визначено напрями державного управління якістю вищої освіти з прийняттям до уваги особливостей прояву (сприйняття) її змісту на індивідуальному рівні. В статті звернуто увагу на значущість мети здобуття вищої освіти для забезпечення її якості, а також визначено місце та роль держави у відповідному процесі. Крім того, стаття містить узагальнення щодо місця та ролі профорієнтаційної роботи в системі забезпечення якості вищої освіти, а також подано перелік основних нормативно-правових документів, які регламентують відповідний напрям роботи. Стаття містить пропозиції щодо вдосконалення нормативно-правового механізму державного управління якістю вищої освіти

Analysis of the level of labor potential development in higher educational institutions of Ukraine: competitiveness of university graduates

The article focuses on the possibility of using the criterion of competitiveness of domestic higher education institutions in the international labor market to analyze the level of development of labor potential of a particular university. In the article the relationship between the level of professional competence of future professionals and the quality of labor potential of universities which were involved in their formation and development. This article contains statistical information on the results of participation of Ukrainian university students in international student competitions, which the author used to characterize the quality of professional institutions in the field of competitiveness of future specialists. In addition, the article contains generalizations as for the possibility of usage the competitiveness feature level of graduates as an indicator (index) of the quality of university's labor potential

Інститут корпоративного університету та його досвід для розвитку трудового потенціалу класичного вищого навчального закладу

This article focuses on some historical aspects of the formation and development of corporate training centers with taking into account the peculiarities of their functioning within a modern system of vocational education. In the article there is defined the categorical meaning of corporate education, and formulated the goal of corporate functioning of the institution. This article contains the author's opinion on the content of category definitions of corporate education and corporate university, and the results justify the importance of relevant experience of the Institute for the development of labor potential of classic form of higher education. In addition, the article presents generalizations about the possibility of using the traditional mechanisms of corporate universities to develop their own labor potential, within the system of classical universities in terms of improving the content of vocational training of subjects and objects of the educational process.Акцентується увага на окремих історичних аспектах формування та розвитку корпоративних навчальних центрів з прийняттям до уваги особливостей їх функціонування у межах сучасної системи професійної освіти. Визначено категоріальний зміст корпоративної освіти, а також сформульовано мету функціонування корпоративного навчального закладу. Викладено авторську думку щодо змісту визначень категорій корпоративної освіти та корпоративного університету, а також результати обґрунтування значущості досвіду функціонування відповідних інститутів для розвитку трудового потенціалу класичних за формою свого утворення вищих навчальних закладів. Наведено узагальнення щодо можливості використання традиційних для корпоративних університетів механізмів розвитку власного трудового потенціалу, у межах системи управління класичними вищими навчальними закладами в частині удосконалення змісту системи професійної підготовки суб’єктів та об’єктів навчально-виховного процесу

Voice morphing using the generative topographic mapping

In this paper we address the problem of Voice Morphing. We attempt to transform the spectral characteristics of a source speaker's speech signal so that the listener would believe that the speech was uttered by a target speaker. The voice morphing system transforms the spectral envelope as represented by a Linear Prediction model. The transformation is achieved by codebook mapping using the Generative Topographic Mapping, a non-linear, latent variable, parametrically constrained, Gaussian Mixture Model

Wavelet-based voice morphing

This paper presents a new multi-scale voice morphing algorithm. This algorithm enables a user to transform one person's speech pattern into another person's pattern with distinct characteristics, giving it a new identity, while preserving the original content. The voice morphing algorithm performs the morphing at different subbands by using the theory of wavelets and models the spectral conversion using the theory of Radial Basis Function Neural Networks. The results obtained on the TIMIT speech database demonstrate effective transformation of the speaker identity

How many orthonormal bases are needed to distinguish all pure quantum states?

We collect some recent results that together provide an almost complete answer to the question stated in the title. For the dimension d=2 the answer is three. For the dimensions d=3 and d>4 the answer is four. For the dimension d=4 the answer is either three or four. Curiously, the exact number in d=4 seems to be an open problem