The continuous p-median problem (CPMP) is one of the most popular and widely used models in location theory that minimizes sum distances from known demand points to sought called centers or medians. This NP-hard also useful for clustering (automatic grouping). In this case, are considered as cluster centers. Unlike similar k-means model, less sensitive noisy data appearance outliers (separately...

The present paper deals with a variant of hub location problems (HLP): the uncapacitated single allocation p-Hub median problem (USApHMP). This consists to jointly locate facilities and allocate demand nodes these selected facilities. objective function is minimize routing demands between any origin destination pair nodes. known be NP-hard. Based on artificial immune systems (AIS) framework, th...

Background: The therapeutic administration of 131I for thyroid remnant ablation and for metastases comes up with some adverse effects. This study was conducted to investigate whether single high dose radioiodine therapy affects lacrimal gland functions or not. Materials and Methods: Seventy-eight eyes of 39 patients, who were diagnosed as differentiated thyroid carcinoma, were objectively teste...

in this paper, a novel decision based median (dbm) filter for enhancing mr images has been proposed. the method is based on eliminating impulse noise from mr images. a median-based method to remove impulse noise from digital mr images has been developed. each pixel is leveled from black to white like gray-level. the method is adjusted in order to decide whether the median operation can be appli...

in this study which was carried out in 1974 in isphahan, 3,000 married women between the ages of 15 to 44 who were the residents of the city of isphahan and a similar group of women who were residents of the villages surrounding the city were interviewed. results indicate that the average and the median of age at the first marriage had been increasing steadily since 1959 for the city women and ...