Studying the role of marketing mix on performance of leasing service providers firms (case: Ghadir leasing company)

Leading companies have been discovered in the application of the principles of management and marketing at all stages from design to sale of goods and services. Marketers should adopt in order to determine the best method of introducing goods and services to consumers’ various choices. Toolbox of marketing strategy is called marketing mix which contains tools used to create favorable reaction among consumers. In addition to the four traditional foundation factors such factors as improved physical factor, human resources, process efficiency are added recently.\ud The aim of the article. The main purpose of this study is study the effect of marketing mix using on the performance of service providers Ghadir leasing and to evaluate the impact of product mix (price, place, promotion, physical factors, people, processes and productivity) in improving market performance of the company.\ud The results of the analysis. This study is applied research, and the statistical population of the study includes experts and middle managers of Ghadir leasing company in Tehran (120 managers). according to Cronbach's formula for sample with 95% confidence limit for the amount of 108 samples were identified in this study. Cronbach's alpha reliability model to study has been assessed the reliability of 87%. Descriptive and inferential statistics were performed through SPSS software for the analysis (Regression analysis, ANOVA, Kolmogorov-Smirnov test, correlation).\ud Conclusions and directions of further researches. According to the findings all the research hypotheses are confirmed. According to the results, it is determined that among the factors of examined mix price and product have the highest impact on improving performance of Ghadir leasing company at the market. This means that by focusing on products and services offered to customers and the price of services offered the higher performance levels can be achieved

Gain-assisted superluminal light propagation through a Bose-Einstein condensate cavity system

The propagation of a probe laser field in a cavity optomechanical system with a Bose-Einstein condensate is studied. The transmission properties of the system are investigated and it is shown that the group velocity of the probe pulse field can be controlled by Rabi frequency of the pump laser field. The effect of the decay rate of the cavity photons on the group velocity is studied and it is demonstrated that for small values of the decay rates, the light propagation switches from subluminal to superluminal just by changing the Rabi frequency of the pump field. Then, the gain-assisted superluminal light propagation due to the cross-Kerr nonlinearity is established in cavity optomechanical system with a Bose-Einstein condensate. Such behavior can not appear in the pump-probe two-level atomic systems in the normal phase. We also find that the amplification is achieved without inversion in the population of the quantum energy levels