diffusion model

One of the important factors for every corporation is to present innovation and new product at the right time. New companies also need to provide timely delivery of goods and plan accurately at the beginning of their activity for reducing their cost. The purpose of this research is to provide strategies for accurate prediction of the sale of new product with consideration of the impacts of various marketing mix characteristics; for this purpose, new product diffusion models have been used in this research. The models presented in this study for prediction of sales and modeling new product diffusion have not been used in Iranian researches. First, various models for the diffusion of new products and their implementation have been explained. Then, due to the weaknesses in the presented models in the context of simultaneous price and cost analysis of advertising, a model is presented that considers prices and advertising simultaneously in the diffusion of new products. These models were run using library data. By examining the coefficient of determination of the diffusion models, it was shown that the model presented in this study is more suitable than the examined models. Finally, by analyzing the sensitivity to price and advertising, the proposed model is more sensitive to changes.

Internet as a new phenomenon in recent two decades is an essential basis for Information and Communication Technology applications and developments، so internet infrastructure development is a major priority in many countries. This paper investigates to develop a comprehensive pattern titled fuzzy-diffusion framework to forecast Internet penetration rate in different countries by applying the theory of diffusion and fuzzy-control method. Applying fuzzy-control method for clustering the samples and building up a model not only gives us a chance to apply many more samples with different criteria to make the pattern but also makes it possible to present special predictions for each country regarding its distinctive characteristics. This pattern with regard to its given data from 1992 to 2006 has been classified for 153 countries in 3 clusters and applied according to the diffusion models and theories. Results of this model for case-study of Iran shows this pattern''s estimation has lower MSE than whole countries model and forecast in year 2014، Iran Internet penetration rate will reach to 56. 26 percent.

Today necessary and important of new product, conversion as a necessary strategy for stay in business. Chief companies try to use new approaches for improvement of new product development (NPD) process. One of these new approaches is concurrent engineering (CE). Many researches and studies about this approach was carried out or is doing now. In the general perspective, concurrent engineering presenting the pattern that have three aspects of design, production and customer. In other words, concurrent engineering approaches try to consider the design, manufacturing and customer of product for achievement the significant improvements in business. In this article try to consideration all three aspects of concurrent engineering and finally presenting the conceptual model of new product development (NPD) in this environment.