Jaroslav Stark: 1960–2010

Chapter XIX Object - Relational Modeling Jaroslav

IntroductIon Modeling techniques play an important role in the development of database applications. Well-known entity-relationship modeling and its extensions have become a widely-accepted approach for relational database conceptual design. An object-oriented approach has brought a new view of conceptual modeling. A class as a fundamental concept of the object-oriented approach encapsulates bo...

GEOMETRIES Jaroslav Ježek First edition , April 2008

Stark Effect

An electric field partly lifts the degeneracies of atomic energy levels. This splitting was observed by Stark [1] and explained by Schrödinger [2]. We compute the Stark effect on atomic hydrogen using perturbation theory by diagonalizing the perturbation term in the N-fold degenerate multiplet of states with principal quantum number N . We exploit the symmetries of this problem to simplify the ...

The Stark truth about the Stark law. Part I.

challenges to physicians – those with specific business interests as well as those whose sole focus is patient care. Understanding the law and knowing which, if any, of the many Stark exceptions apply to your arrangement is essential. Part I of this series explained the purpose of the Stark statute, how it differs from the anti-kickback statute and how you can determine whether it applies to ...

Jaroslav Hájek and asymptotic theory of rank tests

In the series of papers [1-3,5,6,8,9,11,12] (papers [11] and [12] were written joint­ ly with V. Dupac), Hajek systematically investigated the asymptotic properties of linear rank statistics under null hypotheses, under local (contiguous) and some non­ local alternatives. Besides that , in [4] he derived the rank test of independence in a bivariate distribution, locally most powerful against sp...