The authors show how a common approach that emphasizes the three-way interaction among increasing returns, transportation costs, and the movement of productive factors can be applied to a wide range of issues in urban, regional, and international economics. Since 1990 there has been a renaissance of theoretical and empirical work on the spatial aspects of the economy—that is, where economic activity occurs and why. Using new tools—in particular, modeling techniques developed to analyze industrial organization, international trade, and economic growth—this "new economic geography" has emerged as one of the most exciting areas of contemporary economics. The authors show how seemingly disparate models reflect a few basic themes, and in so doing they develop a common "grammar" for discussing a variety of issues. They show how a common approach that emphasizes the three-way interaction among increasing returns, transportation costs, and the movement of productive factors can be applied to a wide range of issues in urban, regional, and international economics. This book is the first to provide a sound and unified explanation of the existence of large economic agglomerations at various spatial scales.
Cities in Sub-Saharan Africa are experiencing rapid population growth. Yet their economic growth has not kept pace. Why? One factor might be low capital investment, due in part to Africa’s relative poverty: Other regions have reached similar stages of urbanization at higher per capita GDP. This study, however, identifies a deeper reason: African cities are closed to the world. Compared with other developing cities, cities in Africa produce few goods and services for trade on regional and international markets To grow economically as they are growing in size, Africa’s cities must open their doors to the world. They need to specialize in manufacturing, along with other regionally and globally tradable goods and services. And to attract global investment in tradables production, cities must develop scale economies, which are associated with successful urban economic development in other regions. Such scale economies can arise in Africa, and they will—if city and country leaders make concerted efforts to bring agglomeration effects to urban areas. Today, potential urban investors and entrepreneurs look at Africa and see crowded, disconnected, and costly cities. Such cities inspire low expectations for the scale of urban production and for returns on invested capital. How can these cities become economically dense—not merely crowded? How can they acquire efficient connections? And how can they draw firms and skilled workers with a more affordable, livable urban environment? From a policy standpoint, the answer must be to address the structural problems affecting African cities. Foremost among these problems are institutional and regulatory constraints that misallocate land and labor, fragment physical development, and limit productivity. As long as African cities lack functioning land markets and regulations and early, coordinated infrastructure investments, they will remain local cities: closed to regional and global markets, trapped into producing only locally traded goods and services, and limited in their economic growth.
It is obvious that holding city population constant, differences in cities across the world are enormous. Urban giants in poor countries are not large using measures such as land area, interior space or value of output. These differences are easily reconciled mathematically as population is the product of land area, structure space per unit land (i.e., heights), and population per unit interior space (i.e., crowding). The first two are far larger in the cities of developed countries while the latter is larger for the cities of developing countries. In order to study sources of diversity among cities with similar population, we construct a version of the standard urban model (SUM) that yields the prediction that the elasticity of city size with respect to income could be similar within both developing countries and developed countries. However, differences in income and urban technology can explain the physical differences between the cities of developed countries and developing countries. Second, using a variety of newly merged data sets, the predictions of the SUM for similarities and differences of cities in developed and developing countries are tested. The findings suggest that population is a sufficient statistic to characterize city differences among cities within the same country, not across countries.
The Handbook of Crime Correlates, Second Edition summarizes more than a century of worldwide research on traits and social conditions associated with criminality and antisocial behavior. Findings are provided in tabular form, enabling readers to determine at a glance the nature of each association. Within each table, results are listed by country, type of crime (or other forms of antisocial behavior), and whether each variable is positively, negatively, or insignificantly associated with offending behavior. Criminal behavior is broken down according to major categories, including violent crime, property crime, drug offenses, sex offenses, delinquency, and recidivism. This book provides a resource for practitioners and academics who are interested in criminal and antisocial behavior. It is relevant to the fields of criminology/criminal justice, sociology, and psychology. No other publication provides as much information about how a wide range of variables—e.g., gender, religion, personality traits, weapons access, alcohol and drug use, social status, geography, and seasonality—correlate with offending behavior. - Includes 600+ tables regarding variables related to criminal behavior - Consolidates 100+ years of academic research on criminal behavior - Findings are identified by country and world regions for easy comparison - Lists criminal-related behaviors according to major categories - Identifies universal crime correlates
In response to exciting developments in genetics, neuroscience and evolutionary psychology, a number of criminologists have embraced the position that criminal behaviour is the product of biological, psychological, and sociological factors operating together in complex ways. They have come to realize that if they are to capture the dynamic nature of criminal behaviour then they must span multiple levels of analysis and thus multiple disciplines. The explosion of interest in this field of biosocial criminology over the past ten years means that the time is ripe for this research companion aimed at graduate students and scholars, giving them an essential overview of the current state of research in the field. The authors are experts in a variety of disciplines (sociology, psychology, biology, criminal justice, and neuroscience), but they all have in common a strong interest in criminal behaviour. This unique book is essential and accessible reading for all students and scholars in the field.
The authors show how a common approach that emphasizes the three-way interaction among increasing returns, transportation costs, and the movement of productive factors can be applied to a wide range of issues in urban, regional, and international economics. Since 1990 there has been a renaissance of theoretical and empirical work on the spatial aspects of the economy—that is, where economic activity occurs and why. Using new tools—in particular, modeling techniques developed to analyze industrial organization, international trade, and economic growth—this "new economic geography" has emerged as one of the most exciting areas of contemporary economics. The authors show how seemingly disparate models reflect a few basic themes, and in so doing they develop a common "grammar" for discussing a variety of issues. They show how a common approach that emphasizes the three-way interaction among increasing returns, transportation costs, and the movement of productive factors can be applied to a wide range of issues in urban, regional, and international economics. This book is the first to provide a sound and unified explanation of the existence of large economic agglomerations at various spatial scales.
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