efl/esl textbooks have been regarded as essential language teaching materials with which the learners spend about 70 up to 90 percent of their class time. the important role they play and their vast use make them not only influential in learning the language but also in shaping values and attitudes. put it another way, textbooks socialize learners using their contents (i.e. texts, illustrations...

Introduction Rheumatoid arthritis is the most common inflammatory disease of the joints and in addition to physical disability, mental disorders are very common in these patients. mental rumination is one of the problems that patients with rheumatoid arthritis face, and one of the factors that has a great impact on it is the perception of pain and functional dysfunction of patients. Therefore,...

Recently with science and technology development, data with functional nature are easy to collect. Hence, statistical analysis of such data is of great importance. Similar to multivariate analysis, linear combinations of random variables have a key role in functional analysis. The role of Theory of Reproducing Kernel Hilbert Spaces is very important in this content. In this paper we study a gen...