this study attempts to identify and evaluate the factors affecting excessive buying that is of high interests theoretically and practically. at first some scales will be developed based on past researches and existing classifications to represent the logical and conceptual varieties in buying excessively. then, psychometric properties of the scales are tested by analyzing the factors confirming...

In this paper we give necessary design principles to be used, when constructing secure Feistel ciphers. We introduce a new concept, practical security against linear and differential attacks on Feistel ciphers. We give examples of such Feistel ciphers (practically) resistant to differential attacks, linear attacks and other attacks.

from the very beginning of the attempts made to organize electronic commerce in international field, the most important subject has been classification of electronic commerce under any legal systems of the organization, i.e. gatt, gats, trips or a combination of the provisions of the gatt and gats. the hybrid and trips systems did not have the required capacity for the subject matter both theor...

transforming methodology from deduction to induction and finally its generalization from the realm of nature studies to the scope of human being one by a positivistic presupposition has led to modern humanities which have a charge to study human beings nature and behaviors scientifically. the main goal of the article is to show theoretical and practical insufficiency of this method in an islami...