On the accretion disc properties in eclipsing dwarf nova EM Cyg

In this paper we analyzed the behavior of the unusual dwarf nova EM Cyg using the data obtained in April-October, 2007 in Vyhorlat observatory (Slovak Republic) and in September, 2006 in Crimean Astrophysical Observatory (Ukraine). During our observations EM Cyg has shown outbursts in every 15-40 days. Because on the light curves of EM Cyg the partial eclipse of an accretion disc is observed we applied the eclipse mapping technique to reconstruct the temperature distribution in eclipsed parts of the disc. Calculations of the accretion rate in the system were made for the quiescent and the outburst states of activity for different distances.Comment: 6 pages, 3 figures, accepted in Astrophysics and Space Scienc

Division polynomials and canonical local heights on hyperelliptic Jacobians

We generalize the division polynomials of elliptic curves to hyperelliptic Jacobians over the complex numbers. We construct them by using the hyperelliptic sigma function. Using the division polynomial, we describe a condition that a point on the Jacobian is a torsion point. We prove several properties of the division polynomials such as determinantal expressions and recurrence formulas. We also study relations among the sigma function, the division polynomials, and the canonical local height functions

Employee training in Australia: evidence from the AWIRS

We use linked data for 13 991 employees and 1494 workplaces to analyse the incidence of employer-provided training in Australia. We find potential experience, current job tenure, low education levels, skilled vocational training and part-time or fixed-term employment status are all associated with a lower probability of recent training. In contrast to studies for other countries, we find no evidence of discrimination on the basis of demographic characteristics in the provision of this job-related training. Finally, and in support of recent non-competitive training models, higher levels of wage compression are found to be positively related to a greater incidence of employee training

Management development: a literature review and implications for future research – Part I: Conceptualisations and Practices

Interest in management development is mushrooming. The number of articles which address different aspects of it are likewise increasing apace. This has heightened the need for a broad-based review which will pull the material together, give shape to it, evaluate it and draw out its implications. In this, the first of a two-part article, this task is commenced