نتایج جستجو برای: urban growth

تعداد نتایج: 979398  

2005
Edward L. Glaeser

Cities are physical structures, but the modern literature on urban economic development rarely acknowledges that fact. The elasticity of housing supply helps determine the extent to which increases in productivity will create bigger cities or just higher paid workers and more expensive homes. In this paper, we present a simple model that provides a framework for doing empirical work that integr...

2015
Brittain M. Briber Lucy R. Hutyra Andrew B. Reinmann Steve M. Raciti Victoria K. Dearborn Christopher E. Holden Allison L. Dunn Shuqing Zhao

Urban areas are expanding, changing the structure and productivity of landscapes. While some urban areas have been shown to hold substantial biomass, the productivity of these systems is largely unknown. We assessed how conversion from forest to urban land uses affected both biomass structure and productivity across eastern Massachusetts. We found that urban land uses held less than half the bi...

2006
JORGE LIRA

A series of studies in urban growth involve the segmentation of urban built up area. This segmentation may used as input to geospatial models to quantify and map urban growth. The segmentation may be used as well to study the dynamics of urban growth on a certain time span. We present in this work a method to segment urban built up area from Landsat multi-spectral images. Our method uses the ex...

2002
Mati Ur Rahman

In Bangladesh, the size of the urban population is growing at an alarming rate. Its urban population constituted only five % of the total population in 1961 but rose to 18 % by 1991. According to the latest population census report (1991) about 21 million people live in urban areas (Government of Bangladesh, 1994). By the end of this century, the urban population in Bangladesh will probably acc...

Journal: :International Journal of Geographical Information Science 2005
Charles Dietzel Martin Herold Jeffrey Hemphill Keith C. Clarke

This paper explores an addition to theory in urban geography pertaining to spatio-temporal dynamies. Remotely sensed data on the historical extent of urban areas were used in a spatial metrics analysis of geographical form of towns and cities in the Central Valley of California (USA). Regularities in the spatiotemporal pattern of urban growth were delected and characterized over a hundred year ...

Today, the world is facing several problems, including population growth, urbanization, food demand increasing, depletion of water resources, and environmental degradation. "Urban agriculture" as part of urban activities is an opportunity to make positive changes in the world food system and produce quality food. Urban agriculture is a new solution to deal with environmental, social, and econom...

Journal: :تحقیقات جغرافیایی 0
حسن آهار گروه جغرافیا و برنامه ریزی شهری مرکز پیام نور تهران ایوب منوچهری میاندوآب گروه جغرافیا و برنامه ریزی شهری دانشگاه تهران صدیقه لطفی گروه جغرافیا و برنامه ریزی شهری دانشگاه مازندران

abstract: one of the most important and complicated social transitions has been growth of worldwide urbanization. the rapid growth of urbanization and cities has had different consequences which is associated with much urban vulnerability. physical, installation, environmental, economical and social inequalities have been the results of such urban growth. this paper aims to study and identify t...

2013
Kurt Paulsen

Does growth management result in lower marginal land consumption rates? The literature offers inconclusive and inconsistent results. This paper uses new data covering all U.S. metropolitan areas and multiple time periods to estimate panel models of effects of growth management on the spatial extent of urban development. Dummy variable estimation misleadingly suggests that growth management incr...

امیری, مجتبی, بابایی هزه‌جان, مجتبی, پیران‌نژاد, علی,

Controlling and administering cities have been more difficult with their increasing expansion and growth. Urban entrepreneurship is one of the strategies that directed cities toward self-control by reducing unemployment rate and its arising problems, creating sustainable revenue, preparing the ground for citizens’ independence etc. Thus, identifying effective factors on urban entrepreneurship c...

2005
Manfred SCHRENK Fabiano SOBREIRA Fabiano Sobreira

In the present paper, we argue that the relative location of peripheral spontaneous settlements is dynamic and changes with the growth of the city. The periphery is a place under constant mutation, always reproducing new extensions of land while the old peripheries are gradually incorporated to the city and occupied by new inhabitants. It focuses on the process of consolidation within the urban...

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