What is urban economy and which domains does it include?

IUESA: Ali Qaderi, the translator of bestseller book of “issues in urban economy” written by Arthur O'Sullivan published so many times in academic environment of Iran and the world which is counted as a reference book in this field, wrote a note for us and addresses different dimensions of urban economy. Following is the full text:
Urban economy is a joint chapter of geography and economy. It is obvious that urban economics is wide affected by the extensive sciences. Since urban economy investigate household’s locational decisions seeking to maximize its favorability and institutions to maximize their benefit, these two fields are separated, but they have a joint chapter.
In this regard, urban economy combines economics with geography and explains geographical choices. Urban economy considers the decisions and economic equations as unrealistic. For example, production occurs in a place and residential area affects life desirability. Urban economy analyzes general policies and helps to choose efficient policy-makers and other urban activists. In general, as the author of urban economy believes, the analysis of urban economy can be categorized into six relevant fields:
1.    The role of workforces in the development of cities
2.    Land use in cities
3.    Urban transport
4.    Crimes and general policies
5.    Housing and general policies
6.    Expenditures and local governmental tax
In other words, urban economy includes different fields such as following issues: analyzing the causes of appearance and existence of cities, growth and development of cities and workforces involved in them, locational decisions of institutions and households, size of cities, land uses and relevant models, efficient allocation of land uses, rent of land, choosing neighborhood influenced by economic decisions along with social and racial ones, zoning the city, and selecting the regions by households for live based on costs and services in different forms, the manner of controlling unfavorable growth by appropriate economic policies, dimensions and methods of transport used in cities (personal or public), choosing desirable method by households and changing location based on development or decline, housing in the city and the quality of development, its market and filtering, the role of local governments and taxes and dues, services to citizens, training and education and positive output effect, crime, the manner of absorption or escape of neighborhoods. Urban economy is defined with the belief that the principle of supply and demand in the market place. It defines city as a local point more densely than the surrounding area. In this regard the author discusses economic and political reasons of city appearance and its impact on each other and considers geography in nongeographic sources. Urban economy differentiates growth and development of previous one-center cities with the growth and development of multi-core cities of past hundred years and it interprets the reasons and factors of growth and development. Horizontal growth of American automobile-based cities and vertical and densely based on public transport are different items of growth model and urban development. Urban economy manages optimal models of growth with the suggestion of appropriate policies. Development of approaches to urban development is an issue that addresses in urban economy. 
Urban economy follows efficient allocation of land uses. Urban economy differentiates growth and development of previous one-center cities with the growth and development of multi-core cities of past hundred years and it interprets the reasons and factors of growth and development. Horizontal growth of American automobile-based cities and vertical and densely based on public transport are different items of growth model and urban development. Urban economy manages optimal models of growth with the suggestion of appropriate policies. Development of approaches to urban development is an issue that addresses in urban economy. Horizontal growth of American automobile-based cities and vertical and densely based on public transport are different items of growth model and urban development .