حمیدرضا اکبری

 A simple look at the peddling phenomenon attributes its demand to be cheaper and easier to buy while understanding the durability of this object in the post-modern consumption environment requires more analysis. The purpose of this research is to find out the internal drivers and motivations that women in Iran have when facing the issue of peddling. Considering the fact that the phenomenon of peddling is in opposition to modern marketing approaches and strategies and somehow challenges them, this study examines the dimensions of this problem with a qualitative approach from the perspective of market sociology. The study population of the current research consists of women who have a one-time or continuous experience of buying from peddlers. In this research, the collected data were analyzed using the thematic analysis method and with the help of MAXQDA software. The interviewees of this study consider deconstruction/flexibility, viewing pleasure, the specificity of the product/place of supply, sense of philanthropy, cost-effectiveness, and finally, the attractiveness of the peddling environment and space as the important motivations of their purchases from peddlers. Reflecting on this phenomenon offers a new perspective on rethinking and understanding shopping processes, especially in the field of women. Also, in the field of Iranian consumer behavior, the success of peddlers can provide different clues even for modern businesses.

This deals with the separation of the insulation model from the coil ladder network model in order to obtain the insulation losses of the coil in fast transients. Ladder network model or RLC Ladder Network (RLC) is introduced as a coil fast transient model for studying fast transient phenomena at high frequencies. In this study, the coil insulation model is separated from the RLC model and all circuit relationships related to this model are rewritten. The electrical parameters of the insulation are calculated by the substitution method in the resonant circuit. The single-phase windings of the 6KV induction machine are modeled with the help of the proposed model and by simulation in the Ansys Maxwell software; the voltage distribution waveform, the insulation loss coefficient, and the insulation loss at different points of the wire are shown. In the following, the voltage distribution waveform of the nodes, the current passing through the coils, the voltage on the coils and the power losses in the coils are compared by two classical RLC models and the proposed model. In this study, according to the separation of insulation losses from winding losses in fast transients and at high frequencies, the proposed model can be used as a suitable tool to achieve more accurate responses of fast transient phenomena.