background: this study describes the possibility of implementing three-dimensional printing technology to create a precise construction of a planned bolus, based on computed tomography information stored in the digital imaging and communications in medicine (dicom) format file. materials and methods:  to create the bolus with a 3d printer, we converted data in the dicom format to the stereolith...

A general initial-boundary value problem of one-dimensional transient wave propagation in a multi-layered elastic medium due to arbitrary boundary or interface excitations (either prescribed tractions or displacements) is considered. Laplace transformation technique is utilised and the Laplace transform inversion is facilitated via an unconventional method, where the expansion of complex-valued...

abstract mohammad mehdi javaheri is undoubtedly the greatest arab poet of contemporary classical poetry. he came to iran several times and was astonished by its beauty. this led to describe the nature of iran. but this part of his poetry, like his other poems, has not been considered by researchers. therefore, this study aims to analyze his poems on the iranian nature.  the important findings o...

Technology affected human life in many ways in different eras of mankind history. Today, the information and telecommunication technology has revolutionized basic structures of human life. Changes are from the whole to the parts and vice versa, which include family and society too. Family lost its former structure in the information age and differentiated from patriarchy family. Societies have ...

information technology (it) is now widely in use in social .economical and cultural domains all over the world. iran has a forty years long experience in academic computer science education besides more than seven years of experience in it education. due to increasing importance of it application in today's human life and its improving and dynamic nature, it seems to be necessary to consid...

Recent advances in imaging technology have resulted in a better understanding of the complexities of the scoliotic spine. Plain radiography remains the usual method of measuring curvature progression, but use of multiplanar imaging techniques, such as computed tomography and magnetic resonance, have resulted in a greater understanding of the three dimensional nature of scoliosis and enabled und...

technology transmission has engaged not only developing countries but also many western research communities. foreign direct investment is a commonly used method to transfer the technology. since specific studies on factors affecting the transmission of technology through foreign direct investment has not been made in nanotechnology, the purpose of this study is to identify the issues affecting...

Urban form has undergone tremendous changes throughout history. These changes have stemmed from various causes. Technology has been one of the most influential forces in changing the face of cities, leaving different marks on the city form. In fact, technology has gained an increasingly more important and integrative role in bringing changes to the urban form. In addition, recent plethora of de...