What is the way to accumulate production in space?

Then the authors can start at one end of the space interval and accumulate production minus consumption in a given market (properly discounted by transport or commuting costs) until the authors reach the end of the interval.

What is the main effect of higher transportation costs on the economy?

As mentioned before, the authors show, for example, that higher transportation costs may yield dynamic welfare gains through increased spatial concentration leading to more innovation.

What is the effect of the initial conditions on the productivity of manufacturing?

The authors use initial conditions that imply that locations close to the upper bound are good in manufacturing, whereas all locations have an initial productivity in services equal to 1.

What is the first family of models?

A first family of models consists of*Prepared for the conference “Regional Science: The Next Fifty Years,” on the occasion of the 50th anniversary of the Journal of Regional Science.

What is the only case in which the authors obtain a negative coefficient on the import kernel of services?

The only case in which the authors obtain such a negative coefficient is when the authors use a low spatial discounting coefficient for the import kernel of services in 1990–2000.

How can one make progress in the field of economic geography?

Some progress could be made numerically, using dynamic extensions of continuous space New Economic Geography frameworks, like the one in Fujita, Krugman, and Venables (2001, Chapter 17), but little has been done so far.

What is the definition of excess supply between locations 0 and t?

Open AccessJournal Article10.1111/J.1467-9787.2009.00648.X

On spatial dynamics

Klaus Desmet, +1 more

- 01 Feb 2010

- Journal of Regional Science

- Vol. 50, Iss: 1, pp 43-63

152

TL;DR: In this article, the authors discuss the main characteristics of an equilibrium allocation in a dynamic spatial framework, present a numerical example to illustrate the forces at work, and provide some supporting empirical evidence.

Abstract: It has long been recognized that the forces that lead to the agglomeration of economic activity and to aggregate growth are similar. Unfortunately, few formal frameworks have been advanced to explore this link. We critically discuss the literature and present a simple framework that can circumvent some of the main obstacles we identify. We discuss the main characteristics of an equilibrium allocation in this dynamic spatial framework, present a numerical example to illustrate the forces at work, and provide some supporting empirical evidence.

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1. What are the contributions mentioned in the paper "On spatial dynamics*" ?

The authors critically discuss the literature and present a simple framework that can circumvent some of the main obstacles they identify.. The authors discuss the main characteristics of an equilibrium allocation in this dynamic spatial framework, present a numerical example to illustrate the forces at work, and provide some supporting empirical evidence.

2. What is the key to making such a rich structure computable?

The key to making such a rich structure computable is that diffusion, together with labor mobility and diversified land ownership, implies that the decisions of where to locateC© 2009, Wiley Periodicals, Inc.7and how much to invest in technology do not depend on future variables.

3. What is the elasticity of substitution in the service sector?

Assuming an elasticity of substitution less than one, the sector with the higher relative productivity growth loses employment share.

4. What is the effect of innovation clusters?

Given that innovation clusters coincide with employment clusters, the model is able to generate “spikes” of economic activity, which could be interpreted as cities.

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TL;DR: In this paper, a comprehensive overview of selected ecosystem services provided by agroforestry with focus on conventional agricultural fields (ACS) in the temperate region is presented, and based on the available data collected, they conclude that ACS are advantageous compared to conventional agriculture in many aspects, and therefore suggest that they should be implemented at a larger scale in temperate regions.

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References

Journal Article•10.1016/0304-3932(88)90168-7

On the mechanics of economic development

Robert E. Lucas

- 01 Jul 1988

- Journal of Monetary Economics

TL;DR: In this article, the authors consider the prospects for constructing a neoclassical theory of growth and international trade that is consistent with some of the main features of economic development, and compare three models and compared to evidence.

...read moreread less

21.5K

The mechanics of economic development

Robert E. Lucas

- 01 Jan 1988

Abstract: This paper considers the prospects for constructing a neoclassical theory of growth and international trade that is consistent with some of the main features of economic development. Three models are considered and compared to evidence: a model emphasizing physical capital accumulation and technological change, a model emphasizing human capital accumulation through schooling, and a model emphasizing specialized human capital accumulation through learning-by-doing.

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20.8K

•Journal Article•10.1086/261763

Increasing Returns and Economic Geography

Paul Krugman

- 01 Jun 1991

- Journal of Political Economy

TL;DR: This paper developed a simple model that shows how a country can endogenously become differentiated into an industrialized core and an agricultural periphery, in which manufacturing firms tend to locate in the region with larger demand, but the location of demand itself depends on the distribution of manufacturing.

...read moreread less

10.3K

•Book

Innovation and growth in the global economy

Gene M. Grossman, +1 more

- 01 Jan 1991

TL;DR: Grossman and Helpman as discussed by the authors developed a unique approach in which innovation is viewed as a deliberate outgrowth of investments in industrial research by forward-looking, profit-seeking agents.

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8.6K

•Journal Article•10.2307/2118401

Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations

Adam B. Jaffe, +2 more

- 01 Aug 1993

- Quarterly Journal of Economics

TL;DR: In this paper, the authors compare the geographic location of patent citations to those of cited patents, as evidence of the extent to which knowledge spillovers are geographically localized, and find that citations to U.S. patents are more likely to come from the U. S., and more likely than coming from the same state and SMSA as cited patents than one would expect based only on the preexisting concentration of related research activity.

...read moreread less

7.2K

...

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On spatial dynamics

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AI Agents for this Paper

Most frequently asked questions

1. What are the contributions mentioned in the paper "On spatial dynamics*" ?

2. What is the key to making such a rich structure computable?

3. What is the elasticity of substitution in the service sector?

4. What is the effect of innovation clusters?

5. What is the way to accumulate production in space?

6. What is the main effect of higher transportation costs on the economy?

7. What is the effect of the initial conditions on the productivity of manufacturing?

8. What is the first family of models?

9. What is the only case in which the authors obtain a negative coefficient on the import kernel of services?

10. How can one make progress in the field of economic geography?

11. What is the definition of excess supply between locations 0 and t?

Figures

Citations

Startups in times of crisis – A rapid response to the COVID-19 pandemic

The Economics of Density: Evidence From the Berlin Wall

The Network Structure of International Trade

New directions for urban economic models of land use change: incorporating spatial dynamics and heterogeneity ∗

Ecological benefits provided by alley cropping systems for production of woody biomass in the temperate region: a review.

References

On the mechanics of economic development

The mechanics of economic development

Increasing Returns and Economic Geography

Innovation and growth in the global economy

Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations

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