Purpose: The purpose of this study is to evaluate the impact of internet marketing indices on sales of electronic books and rank them from the viewpoint of Iran's electronic publishers.Methodology: The present study, in terms of purpose is applied and in terms of method is descriptive. In this study, a researcher-made questionnaire has been used for gathering viewpoints of electronic publishers about the determinants of internet marketing success on the sale of electronic books. In 2014, the number of electronic publications is 60 Publishers that due to the limitation of statistical society, the data is collected according to the census.Findings: Findings of this study showed that variables including ease for the consumer, customer choice right, materials management, production costs and benefits to customers are respectively the most important factors in selling e-books from the perspective of the publishers of electronic books. This means that design of a multi-purpose website with the search capability and ease of use is the base of Internet marketing in the sale of electronic books. However, the effect of communications with customers and sales support services for electronic books could not be verified.

Considering the importance of electronic payment tools in financial transactions and the increasing development of these tools, this study aims to examine the effects of electronic payment tools using the new Keynesian DSGE model, from the household consumption channel, the demand for monetary assets of households and bank deposit to the real sector of Iran's economy. So far, the impact of these tools on the real sector of Iran's economy has not been investigated using Micro-based models. The basic elements of the considered model are households, companies (both final and intermediate goods companies), commercial banks, government and central bank. The parameters of the model were determined using the calibration method of the period of 2016-2018. The results of the shock of electronic payment tools on the variables of production, employment, inflation, growth rate of money and investment were investigated, and the results indicate that with the shock of electronic payment tools, production, employment and investment increased and inflation and the growth rate of the money decreases. The impact of electronic payment tools in the real sector of Iran's economy show that these tools can play a role beyond the safe transfer of money and policymaking, infrastructure growth and development use of new technologies and legislation in This section appears is necessary more and more.

Reinforcing national solidarity and unity is one of the important purposes of formal education in every society and country. Regarding the specification of primary schools pupils their education has vital role to fulfill the national solidarity.This article tries to answer questions as: Is there any will in the primary school text books to enforce the national solidarity? And if the response is positive, in which extension and for which purposes this have been done. This article there gives indications that in the most of the primary school texts, the national solidarity has been under consideration and there were a lot of endeavor to achieve it. But, from pathological point of view the article makes it clear that there are infirmity points with negative impact for achieving this end.

Authoring a book in a specialized field is a very valuable and precious activity that researchers in various fields of human knowledge should do. Writing an innovative book and publishing it by a reputable publishing house shows that the authors of the book are on the path of authority and scientific excellence. Therefore, doing this work should be done after writing and publishing various scientific articles and gaining the necessary experiences in the desired field. This article presents the author's personal experiences in writing a scientific book. There is a hope that after reading this article, readers will be ready to prepare a plan for writing and publishing a book in their specialized field.