this paper takes a close look at the process of evolution of france’s spatial planning system. the rich background and solid approach of spatial planning in france, introduces this country as one of the pioneers of planning in various levels from local to urban and regional scales. the vision of this country during last decades especially in the field of spatial-physical development planning an...

We investigate the impact of cyclic competition on pattern formation in the rock-paper-scissors game. By separately considering random and prepared initial conditions, we observe a critical influence of the competition rate p on the stability of spiral waves and on the emergence of biodiversity. In particular, while increasing values of p promote biodiversity, they may act detrimentally on spat...

We present a comprehensive study of pattern formation in single-field relaxational systems with field-dependent coefficients. A modulated mean-field theory leads to a form amenable to analysis via the geometric architecture developed in our earlier work for systems that exhibit phase transitions between global steady states [Phys. Rev. E 69, 011102 (2004)]. We demonstrate that the phase diagram...

The spatial structure of cities has been one of the influential elements in the development of cities in different periods.In the cities of Iran,the spatial structure of cities is sometimes organic and during the lifetime of cities ,based on the requirements of the times,such as socio_social needs and their religious-religious ideology,and in many cases,this structure is based on programs and g...

this essay that is presented by martyr yazdani, explains us the formation process of irgc artillery. the writer, who was familiar with this unit's establishment and organizational development, has explained the necessity of this unit and its innovations and abilities during the war, in spite of deferent sanctions applied by weapon produces