The history of Taiwan has formed the developed structure of Taiwan cities, policies of industry development caused the main markets focusing in north Taiwan, generating the problem of uneven development between regions. This article adopts ¡§New Economic Geography¡¨ proposed by Krugman to discuss the differences between north region and south region in Taiwan. Moreover, this article extends the issue to real estate market and researches the influence of industrial clusters, transportation construction, labor market and migration of employed population. The empirical results indicate that money supply, industrial cluster and the construction of transportation will affect the development of regional house prices.

Base on Krugman¡¦s NEG model, we subsume urban cost in this study. Referring to study procedure of Murata and Thisse, make few changes of the model. Then, we get 3 conclusions of this study: (1) Due to the difference between commuting costs of each region, the symmetric distribution of workers will no longer make the largest total mass of varieties. While a region attend to traffic construction in order to drop people¡¦s commuting cost, agglomeration economic will not certainly make a negative impact on urban cost or effect people¡¦s variety consumption behavior. (2) In the case of an agglomeration, if the transportation costs are sufficiently large, the agglomeration equilibrium will be stable. The larger the transportation costs between regions, the larger cost of consuming other regions¡¦ commodity. Thus, chose to agglomerate in a bigger region can get cheaper and variety manufacturing commodities easily. And the agglomeration equilibrium will be stable. (3) Any change of commuting cost of the other region will not influence the stable of agglomeration equilibrium.

O presente trabalho busca observar aspectos associados à Nova Geografia Econômica, aplicados ao Brasil através de três ensaios. No primeiro, intitulado “O impacto do mercado potencial sobre os salários nos estados brasileiros, de 2001 a 2009”, estimou-se através de dados em painel em três métodos, painel com efeitos fixos, a metodologia de Hausman-Taylor e o um painel dinâmico utilizando o estimador de Arellano e Bond (1991), um modelo semi-estrutural derivado de Krugman (1991), onde se observou o equilíbrio de curto prazo de um modelo centro-periferia aplicado ao Brasil. Em todos os casos, o mercado potencial, variável diretamente relacionada aos fatores chave da Nova Geografia Econômica, sendo que se podem destacar os ganhos de escala da aglomeração e os custos de comércio, apresentaram impacto positivo sobre os salários regionais. O segundo ensaio, cujo título é “Migração e mercado potencial: uma análise para os estados brasileiros de 2001 a 2009”, observou através da fundamentação teórica de Tabuchi e Thisse (2002), uma aplicação utilizando dados em painel do modelo de Crozet (2004), em que o mercado potencial dos estados afeta o fluxo de migração entre os mesmos. Nesse caso, embora o efeito do mercado potencial tenha apresentado resultado de acordo com a literatura, observou-se um papel importante dos fatores não observáveis, que podem ser associados às amenidades e a heterogeneidade individual no que concerne a escolha sobre migrar, sobre o fluxo migratório mencionado. Por fim, o terceiro ensaio, que se intitula “Decomposição em componentes não observáveis e a dinâmica salarial em regiões metropolitanas brasileiras”, observa os padrões de tendência, ciclo e sazonalidade para seis regiões metropolitanas brasileiras, para o período 2002-2014, utilizando uma estimação com filtro de Kalman. Através da metodologia empregada, pode-se afirmar que a dinâmica dos salários regionais difere em todos os aspectos citados e também em termos de ajuste do modelo. / This study aims to observe aspects of the New Economic Geography, applied to Brazil through three essay. In the first, entitled "The impact of the potential market on wages in the Brazilian states, 2001-2009", was estimated by panel data in three methods, panel fixed effects, the Hausman-Taylor methodology and a dynamic panel using the estimator of Arellano and Bond (1991), a semi-structural model derived from Krugman (1991), which also produced the short-run equilibrium of a core-periphery model applied to Brazil. In all cases, the market potential variable directly related to the key factors of the New Economic Geography, and can highlight the scale economies of agglomeration and trade costs, had a positive impact on regional wages. The second essay, entitled "Migration and potential market: an analysis for the Brazilian states from 2001 to 2009," noted with theoretical basis of Tabuchi and Thisse (2002), an application using panel data model of the Crozet (2004 ), wherein the potential market conditions affecting the migration flow therebetween. In this case, although the effect of the potential market has shown a result according to the literature, there is an important role for unobservable factors that may be associated with features and individual heterogeneity as regards the choice of migrating on migration flow mentioned. Finally, the third test, which is entitled "Decomposition on unobservable components and wage dynamics in Brazilian metropolitan areas," notes the patterns of trend, cycle and seasonality for six urban areas for the period 2002-2014, using a estimation with Kalman filter. Through the methodology used, it can be said that the dynamics of regional wage differs in all the above aspects and also in terms of model fit.

O presente trabalho busca observar aspectos associados à Nova Geografia Econômica, aplicados ao Brasil através de três ensaios. No primeiro, intitulado “O impacto do mercado potencial sobre os salários nos estados brasileiros, de 2001 a 2009”, estimou-se através de dados em painel em três métodos, painel com efeitos fixos, a metodologia de Hausman-Taylor e o um painel dinâmico utilizando o estimador de Arellano e Bond (1991), um modelo semi-estrutural derivado de Krugman (1991), onde se observou o equilíbrio de curto prazo de um modelo centro-periferia aplicado ao Brasil. Em todos os casos, o mercado potencial, variável diretamente relacionada aos fatores chave da Nova Geografia Econômica, sendo que se podem destacar os ganhos de escala da aglomeração e os custos de comércio, apresentaram impacto positivo sobre os salários regionais. O segundo ensaio, cujo título é “Migração e mercado potencial: uma análise para os estados brasileiros de 2001 a 2009”, observou através da fundamentação teórica de Tabuchi e Thisse (2002), uma aplicação utilizando dados em painel do modelo de Crozet (2004), em que o mercado potencial dos estados afeta o fluxo de migração entre os mesmos. Nesse caso, embora o efeito do mercado potencial tenha apresentado resultado de acordo com a literatura, observou-se um papel importante dos fatores não observáveis, que podem ser associados às amenidades e a heterogeneidade individual no que concerne a escolha sobre migrar, sobre o fluxo migratório mencionado. Por fim, o terceiro ensaio, que se intitula “Decomposição em componentes não observáveis e a dinâmica salarial em regiões metropolitanas brasileiras”, observa os padrões de tendência, ciclo e sazonalidade para seis regiões metropolitanas brasileiras, para o período 2002-2014, utilizando uma estimação com filtro de Kalman. Através da metodologia empregada, pode-se afirmar que a dinâmica dos salários regionais difere em todos os aspectos citados e também em termos de ajuste do modelo. / This study aims to observe aspects of the New Economic Geography, applied to Brazil through three essay. In the first, entitled "The impact of the potential market on wages in the Brazilian states, 2001-2009", was estimated by panel data in three methods, panel fixed effects, the Hausman-Taylor methodology and a dynamic panel using the estimator of Arellano and Bond (1991), a semi-structural model derived from Krugman (1991), which also produced the short-run equilibrium of a core-periphery model applied to Brazil. In all cases, the market potential variable directly related to the key factors of the New Economic Geography, and can highlight the scale economies of agglomeration and trade costs, had a positive impact on regional wages. The second essay, entitled "Migration and potential market: an analysis for the Brazilian states from 2001 to 2009," noted with theoretical basis of Tabuchi and Thisse (2002), an application using panel data model of the Crozet (2004 ), wherein the potential market conditions affecting the migration flow therebetween. In this case, although the effect of the potential market has shown a result according to the literature, there is an important role for unobservable factors that may be associated with features and individual heterogeneity as regards the choice of migrating on migration flow mentioned. Finally, the third test, which is entitled "Decomposition on unobservable components and wage dynamics in Brazilian metropolitan areas," notes the patterns of trend, cycle and seasonality for six urban areas for the period 2002-2014, using a estimation with Kalman filter. Through the methodology used, it can be said that the dynamics of regional wage differs in all the above aspects and also in terms of model fit.

O presente trabalho busca observar aspectos associados à Nova Geografia Econômica, aplicados ao Brasil através de três ensaios. No primeiro, intitulado “O impacto do mercado potencial sobre os salários nos estados brasileiros, de 2001 a 2009”, estimou-se através de dados em painel em três métodos, painel com efeitos fixos, a metodologia de Hausman-Taylor e o um painel dinâmico utilizando o estimador de Arellano e Bond (1991), um modelo semi-estrutural derivado de Krugman (1991), onde se observou o equilíbrio de curto prazo de um modelo centro-periferia aplicado ao Brasil. Em todos os casos, o mercado potencial, variável diretamente relacionada aos fatores chave da Nova Geografia Econômica, sendo que se podem destacar os ganhos de escala da aglomeração e os custos de comércio, apresentaram impacto positivo sobre os salários regionais. O segundo ensaio, cujo título é “Migração e mercado potencial: uma análise para os estados brasileiros de 2001 a 2009”, observou através da fundamentação teórica de Tabuchi e Thisse (2002), uma aplicação utilizando dados em painel do modelo de Crozet (2004), em que o mercado potencial dos estados afeta o fluxo de migração entre os mesmos. Nesse caso, embora o efeito do mercado potencial tenha apresentado resultado de acordo com a literatura, observou-se um papel importante dos fatores não observáveis, que podem ser associados às amenidades e a heterogeneidade individual no que concerne a escolha sobre migrar, sobre o fluxo migratório mencionado. Por fim, o terceiro ensaio, que se intitula “Decomposição em componentes não observáveis e a dinâmica salarial em regiões metropolitanas brasileiras”, observa os padrões de tendência, ciclo e sazonalidade para seis regiões metropolitanas brasileiras, para o período 2002-2014, utilizando uma estimação com filtro de Kalman. Através da metodologia empregada, pode-se afirmar que a dinâmica dos salários regionais difere em todos os aspectos citados e também em termos de ajuste do modelo. / This study aims to observe aspects of the New Economic Geography, applied to Brazil through three essay. In the first, entitled "The impact of the potential market on wages in the Brazilian states, 2001-2009", was estimated by panel data in three methods, panel fixed effects, the Hausman-Taylor methodology and a dynamic panel using the estimator of Arellano and Bond (1991), a semi-structural model derived from Krugman (1991), which also produced the short-run equilibrium of a core-periphery model applied to Brazil. In all cases, the market potential variable directly related to the key factors of the New Economic Geography, and can highlight the scale economies of agglomeration and trade costs, had a positive impact on regional wages. The second essay, entitled "Migration and potential market: an analysis for the Brazilian states from 2001 to 2009," noted with theoretical basis of Tabuchi and Thisse (2002), an application using panel data model of the Crozet (2004 ), wherein the potential market conditions affecting the migration flow therebetween. In this case, although the effect of the potential market has shown a result according to the literature, there is an important role for unobservable factors that may be associated with features and individual heterogeneity as regards the choice of migrating on migration flow mentioned. Finally, the third test, which is entitled "Decomposition on unobservable components and wage dynamics in Brazilian metropolitan areas," notes the patterns of trend, cycle and seasonality for six urban areas for the period 2002-2014, using a estimation with Kalman filter. Through the methodology used, it can be said that the dynamics of regional wage differs in all the above aspects and also in terms of model fit.

This paper presents an empirical analysis about the position new economic geography plays in economics. In a theoretical review we discuss recent developments in economics, like new trade theory, endogenous growth theory, and new economic geography and analyze their implications for spatial structure. The paper presents the basic components of these theories and points out their commonalties. This shows that all these theories are based on assumptions that lead to spatial structure, i.e. differences in the spatial allocation of economic activities. In the empirical investigation we use the Social Science Citation Index to analyze citations of seminal contributions in various types of journals and the rate with which geographical content appears in economic journals. As we show, spatial topics still play only a marginal role in economics. Economists it seems are still reluctant to accept the spatial implications of their own theoretical models. / Series: SRE - Discussion Papers

We analyse in a Footloose Capital productive public services provided by a central government aiming at reducing regional disparities. Two countervailing effects occur - one upon productivity and another upon local demand - the relative strength of which depends upon the financing scheme. Only if the "rich" region contributes sufficiently to the financing of the public services in the "poor" region, the poor region will actually gain. In studying these questions we pay particular attention to the dynamic adjustment processes and to the role of trade freeness. / Series: Department of Economics Working Paper Series

Der Anstieg der Energiepreise kann zu einer länger anhaltenden Verteuerung von Gütertransporten führen. Welche Auswirkungen haben steigende Transportkosten auf die Entwicklung von Städtesystemen? Ein solcher Transportkostenanstieg hat in der Russischen Föderation nach der Preisliberalisierung 1992 real, d.h. in Relation zu den Preisen anderer Gütergruppen stattgefunden. Gleichzeitig stellt die Bevölkerungsstatistik der Russischen Föderation Daten bereit, mit deren Hilfe Hypothesen zur Entwicklung von Städtesystemen unter dem Einfluss steigender Transportkosten geprüft werden können. Diese Daten werden in der vorliegenden Arbeit umfassend ausgewertet. Den theoretischen Hintergrund liefert die Modellierung eines Städtesystems mit linearer Raumstruktur im Rahmen der Neuen Ökonomischen Geographie. Damit wird ein Werkzeug geschaffen, das auch auf weiträumige Städtesysteme mit ausgeprägter Bandstruktur angewendet werden kann. Die hier erstmals erfolgte ausführliche Erläuterung des zu Grunde liegenden Theorieansatzes versteht sich als Ergänzung der Standardlehrbücher der Raumwirtschaftstheorie. Die Ergebnisse der empirischen Untersuchung bestätigen die Prognose des Modells, dass in großflächigen Ländern bzw. Regionen mit Ähnlichkeit zur unterstellten Raumstruktur ein Anstieg der Transportkosten Konzentrationstendenzen in den Zentren befördert, während die peripheren Regionen zunehmend abgekoppelt werden. / The rise in energy prices may result in long-lasting rise in costs of freight transports. Which effects do rising freight transport costs have for the development of urban systems? Such rise of transport costs in real terms has happened in Russia after price liberalisation in 1992. At the same time, the Russian official demographic statistics provides data that can be used to test hypotheses concerning the development of urban systems affected by rising transport costs. In the present study, these data are comprehensively evaluated. The theoretical background is provided by modelling of a linear shaped urban system in the framework of New Economic Geography. By means of this tool, analysis can be applied to spacious urban systems with large transport distances. For the first time, the underlying theoretical approach is explained in detail. The empirical results provide evidence for the outcomes of the theoretical model: In spacious countries or regions, respectively, whose urban systems are drawn-out on long lines, rising costs of freight transport are conducive to tendencies of concentration of population in large cities in the centre of the system, while peripheral regions are increasingly disconnected.

Die Neue Ökonomische Geographie (NEG) erklärt Agglomerationen aus einem mikroökonomischen Totalmodell heraus. Zur Vereinfachung werden verschiedene Symmetrieannahmen getätigt. So wird davon ausgegangen, dass die betrachteten Regionen die gleiche Größe haben, die Ausgabenanteile für verschiedene Gütergruppen identisch sind und die Transportkosten für alle Industrieprodukte die selben sind. Eine Folge dieser Annahmen ist es, dass zwar erklärt werden kann, unter welchen Bedingungen es zur Agglomerationsbildung kommt, nicht aber wo dies geschieht. In dieser Arbeit werden drei Standardmodelle der NEG um verschiedene Asymmetrien erweitert und die Veränderung der Ergebnisse im Vergleich zum jeweiligen Basismodell dargestellt. Dabei wird neben der Theorie auf die Methoden der Simulation eingegangen, die sich grundsätzlich auf andere Modelle übertragen lassen. Darauf aufbauend wird eine asymmetrische Modellvariante auf die wirtschaftliche Entwicklung Deutschlands angewandt. So lässt sich das Ausbleiben eines flächendeckenden Aufschwungs in den neuen Ländern, die starken Wanderungsbewegungen in die alten Länder und das dauerhafte Lohnsatzgefälle in einem Totalmodell erklären. / The new economic geography explains agglomerations based on a microeconomic general equilibrium model, witch is usually assumed to be symmetric in the sense, that regions are of the same size and transport costs and expenditure shares are the same. As a result, the models can explain why an agglomeration occurs, but not in witch region. This book modifies three of the most influential models of the new economic geography and assumes various asymmetries. It compares the results to the symmetric cases. Not only theoretical aspects but also methods of simulation are discussed in detail. This methods can be applied to a wide variety of models. To show the political implications of the theoretical results, one of the asymmetric models is applied to the economical development in germany after reunification. The model is able to explain the persistent difference in wages between east and west and the simultaneous incomplete agglomeration in the west.

In this paper the Helpman-Hanson model is estimated using Swedish municipality level data. The Helpman-Hanson model builds on Krugman’s contributions to the NEG theory but makes use of a housing sector instead of the usual agricultural sector. The Helpman-Hanson equation is optimized both in levels and in first differences and the results confirm a positive relationship between wages and market potential, although the effect of transport costs on the distribution of wages turns out to be non-existent. Additionally, all of the estimated structural parameter values end up within the consistency ranges required by theory and most of them, except for a very large estimate for the elasticity of substitution, fall in line with previous research.