Category Archives: PhD seminar

Final PhD seminar with Joakim Wernberg on Beyond City Size – Essays on the internal order, complexity and diversity of growing cities

Joakim Wernberg, PhD candidate at CIRCLE and the Department of Human geography, Lund University, will present his PhD project with a title Beyond City Size – Essays on the Joakim-round-300x296.jpginternal order, complexity and diversity of growing cities. The final seminar is the last opportunity for the PhD candidate to present his work and receive feedback before the actual PhD defence.

Date/Time: Wednesday 28 June 2017, 13.15 – 15.00

Place: Malmö, Geocentrum I, Department of Human Geography, Sölvegatan 10, Lund

Opponent: Martin Henning, Gothenburg University

Abstract: There is a wide body of empirical evidence that shows increasing returns to scale with city size, including more productive workers and firms, increased division of labor and more innovation. At face value, these results are attributed to the city as a whole and cities are treated as club goods. Yet, this does not resonate with the current theoretical framework underpinning agglomeration economies, nor with the growing body of empirical evidence of highly localized externalities, especially those consistent with learning or knowledge spillovers. While much theoretical effort is directed toward identifying micro-level mechanisms within urban economies, the literature is less concerned with system properties on a macro-level. In this paper, I develop a model that links empirical regularities within and between cities to complex adaptive system properties. In doing so, I provide a conceptual explanation of how individual interactions can self-organize into collective information processors.

For more information and a full manuscript please contact

Welcome to Joakim’s Final PhD seminar!


Final PhD seminar with Yannu Zheng on the inventive performance of immigrants in Sweden

yannuYannu Zheng, PhD candidate at CIRCLE and the Department of Economic History, will present her PhD project with a working title “The inventive performance of immigrants in Sweden and its impact factors, 1985–2007”. The final seminar is the last opportunity for the PhD candidate to present her work and receive feedback before the actual PhD defense.

Discussants: Benny Carlson and Björn Eriksson, Department of Economic History, Lund University.

Date: Monday, 7th of November, 14.15

Place: Alfa1:3004, Scheelevägen 15 B, Lund

Abstract: This thesis has an initial examination on the inventive performance of immigrants in Sweden as well as its impact factors based on a unique database that matches inventors with the entire population from 1985 to 2007. The results show that the inventive performance of immigrants vary dramatically across those with different backgrounds. This is strongly related to the selection of immigrants, migration policy in Sweden, age of migration and parents’ region of origin (impact on integration level) as well as the match of education and occupation for immigrants. In general, first-generation immigrants are negatively selected and have lower performance outcomes than Swedish-born but immigrant inventors perform as well as Swedish-born inventors. First-generation immigrants’ high concentration in low-skilled occupations and lower match between education level and occupation than that of natives is the main reason to impede their probability of patenting in majority of sectors. The only exception is the high-tech knowledge intensive service (KIS) sector, where the match for immigrants is similar as that of natives and their performance is similar. For second-generation immigrants, the selection of their foreign-born parents and their physical or cognitive proximity of region of origin to Sweden, which is affected by their parents’ region of origin, also affect their inventive performance through intergeneration transmission. In the short-run, the liberalization of migration within the EU/EEA in 1994 has negative effect on the education structure for immigrants from the EU-15 compared with those from the other developed regions, but there is no effect on the their probability of being an inventor.