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Ahmadi Muslims constitute a reformed sect of Islam founded in 1889 by a charismatic leader, Mirza Ghulam Ahmad. In this article I explore the character and processes of transnational marriage arrangements among Ahmadi Muslims over three generations in the UK. I suggest that the process of conversion to Ahmadiyyat and the organizational structure of Ahmadi mosques have combined to produce a flexible pattern of marriage among Ahmadis that is unusual among South Asians. A significant number of earlier and contemporary Ahmadi marriages are interethnic, reflecting an expansive Ahmadiya identity that is perceived to be independent of ethnicity. Further, analysis of marriage proposals accepted as well as rejected suggests gender differences in perceptions of and motivations for marriage. The analysis suggests that while gender differences in expectations of marriage may have parallels in some other South Asian transnational marriages, Ahmadi religious identity and organization plays a distinctive role in shaping the processes of Ahmadi marriage arrangements.

Reliable electrical power is a milestone for modern society and economy. Multilevel power converters represent a potential breakthrough in employing switching converters for flexible ac transmission system and custom power application. This paper present the design and realization of the prototype of a 1,5 kW mono phase 5-level cascaded inverter with PWM modulation. The prototype has been tested and the output waveforms have been investigated. The results conflrm the goodness of these devices in synthesizing a desired ac voltage from several level of dc voltage with a good control of the frequency, the voltage output (including phase angle) and the active reactive power flow.

A computer analysis of PWM dc-dc converters operated in discontinuous conduction mode DCM is presented. The analysis is based on a linearized small-signal model of the converter ideal switching-cell (ISC), which is used as a sub-circuit inside the circuit simulation program. The sub-circuit is used in computer simulation of a PWM buck-boost converter, which is based on equivalent circuits. A computer program for PWM dc-dc converters analysis, generates the symbolic expressions of the root locus and Bode plots of the control-to-output voltage transfer function, the input-to-output voltage transfer function, the input impedance, and the output impedance which are given both in symbolic and numerical expression.

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