Qavam al-Din Shirazi is one of the prominent architects of the Timurid era who has memorized many works such as the Goharshad Mosque in Mashhad and the Herat Goharshad Mosque. What is considered as an architectural work in the study of a building is the material and physical aspects of the architectural space. Due to the destruction of Heratchr('39')s Goharshad Mosque, one of the ways to unders...

Proportions can be called a mathematical concept that creates a good relationship between the components of the work in architecture and likewise a sense of order among the parts of a visual composition in the audience. Proportions not only can can make building component arrengment regular but also it can it can create a sense of aesthetics. Traditional Iranian artists and architects have been...

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

In traditional architecture, the adherence of architects to the rules and proportions in numbers, geometry and music is present in designing and shaping many public monuments, and mathematical proportions, artistic ratios, or musical proportions are used in geometry of these buildings. Extracting and matching mathematical rules and proportions and examining them in the architecture of the tradi...

This article aims at studying the geometrical proportions of five types of most outstanding designs of Safavid carpets as one of the most important styles in carpet art of Iran. This research has been conducted using geometric methods of translation of measures and finding the basic module for identifying the proportions in carpets for to determination and comparison of modules with each other....

There are signs of compatibility between Iranian architecture and carpet in terms of geometry and proportions that the dimensions of the interior of the house and the dimensions of the carpet are closely related. Attention to the carpet in two dimensions of design and geometric dimensions has been an important factor in shaping the dimensions of the interior of the Iranian house. This study aim...

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...