الفهرس 
الخلفيات النظرية لمراكز المدنOnly 14 pages are availabe for public view
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Abstract
City centers are affected by a number of factors, including but not limited to, the various
uses of the buildings (residential, commercial or administrative), the traffic congestion and the
inadequacy of the existing urban fabric to the changes of the means of transportation.
Therefore, this thesis, through its consecutive chapters, studies the impact of the uses of the
buildings and the means of transportation on the road network in the city center. This thesis
has been divided into three main chapters:
Chapter one: Characteristics of the design and planning for city centers :
This chapter deals with the theories and the determinants of the city centers and their
characteristics. It also investigates the causes of the changes that have taken place and how
much the urban fabric has been affected by them. This chapter ends with analyzing the
problems of the city centers.
Chapter two : Buildings uses, transportation and road network:
This chapter focuses on the different uses of buildings and the factors that govern the
functional uses within urban areas. It ends with analyzing the mutual impact between the
road network, the building uses and the means of transportation.
Chapter three: Applied study ( the city center of Alexandria) :
This chapter begins with analyzing the study area. This includes a comprehensive survey of
the buildings uses and the number of trips generated in each subset area of the study area as a
result of these uses. This is followed by calculating the number of means of transportation
distributed in all the sections of the study area. Finally, the trips are assigned to network
connections to evaluate the level of the traffic service according to the value (volume:
capacity) ( ~ ). A proposal for some alternatives that can be applied to measure the impact
on the road network as a result of changing the buildings uses and the means of
transportation in the region is given.
The thesis ends with presenting the results and the recommendations that help to achieve the
required balance resulting from the mutual interactions between these uses and the traffic on
the road network in the city center to reduce the pressure on it.