In the present scenario of electronic commerce (E-Commerce), in-depth knowledge user interaction with resources has become a significant research concern that impacts more on analytical evaluations recommender systems. For staying in aggressive E-Commerce, various products and services regarding distinctive requirements must be provided time. Moreover, because large amount product information a...

The performance of Orthogonal Frequency Division Multiple Access (OFDMA) system degrades significantly in doubly dispersive channels. This is due to the fact that exponential sub-carriers do not match the singular functions of this type of channels. To solve this problem, we develop a system whose sub-carriers are chirp functions. This is equivalent to exploiting Fractional Fourier Transform (F...

introduction: brachytherapy is one of the most common treatment modalities for gynecological cancer. the gzp6 brachytherapy system is one of the devices utilized in iran. it has been considered particularly due to its low cost compared to other more complete and established systems. this system has some deficiencies including lack of a treatment planning software for non-predefined treatments, ...

introduction: hospital information systems (hiss) are computerized systems used as electronic tools for managing patient information. usability is necessity for the success and acceptability of hiss and can enhance the quality of provided care. this study aimed to evaluate the usability of hiss in hospitals affiliated with mashhad university of medical sciences (iran). methods: this descriptive...