| Abstract: | The urban development process intends to enhance urban equipment, 
infrastructure and services to improve urban conditions and reduce 
inequalities. While planning activities usually demand a sizeable amount of 
data to assess these conditions, it is hard to find a straightforward 
procedure to translate these data into a comprehensive and balanced set of 
projects and programs. Most urban projects have a strong sectorial character 
and it is difficult to compare parks with roads or sanitation with schools. 
Development projects are normally justified in their own terms, yet rarely are 
sectorial demands equably met by the proposed projects. The following model 
intends to facilitate this task, providing a simple yet efficient means to 
assess urban conditions, evaluate and compare the sectorial demands and 
assemble a balanced set of development goals that can be used to estimate the 
overall investment needed. The proposed system assesses urban conditions 
through a set of selected indicators, derived from a compact data base. These 
indicators represent the performance of the basic urban sectors at each urban 
zone, thus providing the necessary spatial component to the system. The 
indicators are normalised to allow comparison of conditions between different 
sectors. The values of the normalised indicators are then used to evaluate the 
relative quality of services at each urban zone. By displaying the normalised 
indicators as bar charts, it is easier to visualise sectorial demands and 
spatial imbalances. The model is built on a spreadsheet, making fairly easy to 
verify how much improvement in the sector is needed to attain the desired 
performance level in each zone. New values can be entered interactively until 
a preferred urban conditions pattern is attained. The information produced by 
the model can be used as the basic guideline to dimension sectorial projects 
and compose a comprehensive development program. Besides describing and 
discussing all the procedures adopted, a simple yet complete example 
illustrates the use of the model. |