Discontinuity As Catastrophic Event in Urban Design
Abstract
This research is an attempt to study the discontinuity as a catastrophic event
in Urban Design, where this phenomenon had been studied in many displines such as
Mathematics, Planning , lv{edicine ,Surgery and Biology.
The research studied this phenomenon from linguistics and conceptual points
of views, and submitted its basics in Mathematics according to the Theory of
Catasffophe. The research try to borrow this Theory from this field and built a
Programme to measure and explore the Discontinuity as a Catastrophic Event in
Urban Design.
The case study was The
fabric surrounded by a new one
Casaba of Algeria , rafuch is a traditional urban
The research had prepared the axial maps of the Casaba of Algeria for the
years (1830,1846,1880,1996,2001), and studied the Relative asymmetry,which was
considered as a Behavioral variable affected by two Control variables rvhich were the
Connectivity and the Local Control.
The research found that there was Bimodality in the behavior of the
traditional urban fabric where the Trajectory of balance Manifold moved from
segregation to integration by the effect of the new fabric.
The research also found that there were two Catastrophic Events happened in
the traditional fabric at the years (1830 and 1880) , as a result oflhe unstability of the
system ,there types were a Cusp Catastrophe.
The Theory of Catastrophe add a new items to the Urban Design such as
Singularity, Unstability , and Conflict Nuclei, where the research had proved their
appearance in the traditional urban fabric by the effect ofthe new one
This research stands as a pioneering attempt in this field.
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