A survey of business educational simulations and their adoption by business educators.

A survey was designed to investigate the current usage of business simulations in academic education. The purpose of the study was to discover (i) differences between current users, non-users and former users of educational simulations; (ii) modes of communication used for information; (iii) reasons for adoption and; (iv) currently used simulations. An Internet survey invited 14,497 educators from the professional organizations of ABSEL, ISAGA and AACSB member affiliated business schools. The invitations were accepted by 1085 respondents who were categorized into (i) 30.5% current business simulation users; (ii) 17.3% non-users; and (iii) 52.2% former users. It was found that users and former users have no significant differences in demographic and attitudinal characteristics between them. However, non-users have differences in attitudes that distinguish them from users. Lastly, the communication channels and the currently used simulation game titles were analysed. (Abstract shortened by UMI.) Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2003 .G49. Source: Masters Abstracts International, Volume: 43-01, page: 0025. Adviser: W. Wellington. Thesis (M.B.A.)--University of Windsor (Canada), 2004

Monte-Carlo Simulations of Thermal Comptonization Process in a Two Component Accretion Flow Around a Black Hole in presence of an Outflow

A black hole accretion may have both the Keplerian and the sub-Keplerian component. In the so-called Chakrabarti-Titarchuk scenario, the Keplerian component supplies low energy (soft) photons while the sub-Keplerian component supplies hot electrons which exchange their energy with the soft photons through Comptonization or inverse Comptonization processes. In the sub-Keplerian component, a shock is generally produced due to the centrifugal force. The postshock region is known as the CENtrifugal pressure-supported BOundary Layer (CENBOL). In this paper, we compute the effects of the thermal and the bulk motion Comptonization on the soft photons emitted from a Keplerian disk by the CENBOL, the preshock sub-Keplerian disk and the outflowing jet. We study the emerging spectrum when the converging inflow and the diverging outflow (generated from the CENBOL) are simultaneously present. From the strength of the shock, we calculate the percentage of matter being carried away by the outflow and determine how the emerging spectrum depends on the outflow rate. The preshock sub-Keplerian flow is also found to Comptonize the soft photons significantly. The interplay between the up-scattering and down-scattering effects determines the effective shape of the emerging spectrum. By simulating several cases with various inflow parameters, we conclude that whether the preshock flow, or the postshock CENBOL or the emerging jet is dominant in shaping the emerging spectrum depends strongly on the geometry of the flow and the strength of the shock in the sub-Keplerian flow.Comment: 15 pages, 8 figure