عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Considering the increasing importance of purchase task in different organizations specially in military and Police organizations that is related to health and life and property of the citizens ,this research tried to study methods of purchasing capital items, and to present concepts such as centralized ,semi-centralized and dispersed purchases in order to investigate the effectiveness of purchase methods of capital items in Police logistic center. Therefore, in- time purchases as well as proper methods and proper prices have great effects in reduction of expenses and increase of profitability and efficiency of the organization.
This research is applied from the objective point of view ,and its method is descriptive-survey research method .A combination of library and survey research methods have been used. After a detailed study of the literature and consultation with experts ,a questionnaire was made and presented to 47 managers and all specialists of purchase center of Police Logistic department.
Considering the importance of the results about the optimum supply of capital items in Police and availability of statistical population ,census method was used.
Results: Centralized method with average 4.15 had the most effectiveness in purchase of capital items in Police Logistic center.One important factor of depreciation in this method is high tonnage or high numbers of purchase. Dispersed method with average 3.99 placed second.Factors such as purchasing items with higher lifetime and higher expiry date ,purchasing on the bases of needs and considering keeping capacity , and purchasing in proper time were effective.Semi-centralized method with average 3.96 stood on the third place.Factors such as high speed in purchasing,and using existing local resources were effective.