چکیده (انگلیسی):

The importance of knowledge as a source of strategic renewal of an organization is obvious in today's
complex and changing environment. Knowledge enables organizations to acquire and apply knowledge more quickly
and effectively than past and thus it provides a basis for maintaining a sustainable competitive advantage. The present
era is the age of dramatic changes and developments in technology .The intellectual structure of this era is embossed
with deepening information and paying attention to participation of creative and knowledge-oriented manpower
instead of functional manpower. Therefore, intelligent management tries to make better and more use of a tool called
knowledge to confront and deal with uncertainty, maintaining the position, creativity and innovation and expand its
competitive domain. In this context, knowledge sharing process is one of the most important factors that can function
as both effect and cause of many factors on which we must gain enough understanding. The purpose of this study
was to investigate the impacts of job attitudes on organizational citizenship behavior and knowledge sharing among
personnel of management development and resource planning department in Tehran University of Medical Sciences
and Health Services. To do this, 200 managers and employees of management development and resource planning
department of Tehran University of Medical Sciences and Health Services were selected by simple random sampling.
Then, they answered to researcher-made questionnaires. In the end, the results of the questionnaires were analyzed
using bivariate linear regression and the results showed that job attitudes had a significant effect (p <0.05) on
organizational citizenship behavior and knowledge sharing among personnel of management development and
resource planning department of Tehran University of Medical Sciences and Health Services. Besides, it was found that
organizational citizenship behavior had a significant effect (p <0.05) on knowledge sharing among personnel of
management development and resource planning department of Tehran University of Medical Sciences and Health
Services.