natural hazards such as earthquakes have threatened the life of human beings during the history.as a consequence, the vibration mitigation of structures has caught great importance. activecontrol of structures is one of the rapidly emerging areas in the concept of structural control. thispaper presents a control method to deal with this subject when the dynamics of the structure ishysteretic an...

The purpose of this study was to investigate the effect of textual enhancement types on English as Foreign Language ( EFL ) learn er s ’ grammatical awareness of simple and complex structures. A nu m- ber of 104 learners from Ayandegan Institute, in Tehran, participated in this study. To homogenize the samples, the researchers administered a placement Michigan Test of English language to the p...

social security of iran has passed different stages and today has entered the stages of organizational development and universal coverage. but this system, like other man-made systems, has inadequacies which must be rectified. in this article, legal system of iran has been studied from legal point of view and necessary proposals have been presented in order to remove these defects: main axis of...

The present study investigated comparatively the impact of two types of input enhancement (i.e. textual vs. compound enhancement) on developing grammar ability in Iranian EFL setting. Sixty-five female secondary high school students were selected as a homogenous sample out of about a 100-member population based on Nelson language proficiency test. Then, their grammar ability was measured based ...

In the recent years, trends in technology have come up with a solution to share digital media an easier and rapid manner which leads use of illegitimate manner. order make this problem less severe, various cryptographic techniques can be used secure by encrypting them. The following article presents technique that enables implementation image security through three different namely Double rando...