with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

The electronic commerce is considered as one of the strategies to maintain competitive advantage in the companies. To have a successful electronic commerce in each business, some requirements and infrastructures are needed in advance. "Technical infrastructure" is as the most fundamental and most important infrastructure for electronic commerce. In this study, a comprehensive model is...

Purpose: To determine the impact of the knowledge management infrastructures and the dimensions of improvement of managers' decision-making on the status of knowledge management in the public libraries affiliated to the Iran Public Libraries Foundation. Method: This research is a descriptive-correlational study. The statistical sample of the research was selected by using the cluster random sa...

learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...

1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...

Introduction Today tourism industry is as an important source of income in the world and yet effective factors which are contributing  to the cultural exchange countries has the largest movement of people in peace time and one of the most promising development activities that are referred to as the gate of development. Tourism is a complex and contradictory phenomenon. It’s a bene...

Purpose of this research was to structure the problem of establishing a knowledge management system in Oil industry using a combination of factor analysis and DEMATEL approach to identifying the effective factors in the form of causal relationships to understand planners from the problem position and visualization of structures a complex relationship between factors. Firstly, the organization...