In this paper, we propose an efficient selective encryption scheme for encrypting JPEG 2000 images. The proposed scheme uses a secret key and a mapping function to generate a private initial table to encrypt the selected DWT codeblocks in the entropy coding stage of JPEG 2000 coding scheme. Theoretical analysis and experimental results show that the proposed scheme can achieve various purposes ...

Background. Considering the position and importance of sports federations in Iran and their very important duties and dependence on the Ministry of Sports and Youth in terms of financial resources, they must be responsive to their performance in providing services and implementing their programs. The duties are namely the development and promotion of sports at the public and championship levels...

The present research identifies and prioritizes the effective organizational structure components using content (theme) analysis and Delphi technique and hierarchical analysis (Case Study of Regional Electric Companies of Iran). The present study is applied  based on purpose and is exploratory-survey based on the nature and method of data collection. The statistical population of this study inc...

Background: Ethical values ​​as a subset of organizational culture have a multidimensional interaction on formal and informal relationships and behavioral control of its members. Assessing the impact of aspects of interpersonal relationships and interactions in organizations that are considered as moral dysfunctions, the cause of wasting the organizationchr('39')s talents is the subject of this...