Bogang Jun

• PhD in Economics
• Professor (Associate) at Inha University

This study investigates the impact of the 2018 summer heat wave on urban mobility in Seoul and the role of economic complexity in the region’s resilience. Analysis of subway and mobile phone data reveals a significant decrease in the floating population during the extreme heat wave, underscoring the thermal vulnerability of urban areas. However, ur...

This study explores how the relatedness density of amenities influences consumer buying patterns, focusing on multi-purpose shopping preferences. Using Seoul's credit card data from 2018 to 2023, we find a clear preference for shopping at amenities close to consumers' residences, particularly for trips within a 2 km radius, where relatedness densit...

This study introduces a metric designed to measure urban structures through the economic complexity lens, building on the foundational theories of urban spatial structure, the Central Place Theory (CPT) (Christaller, 1933). Despite the significant contribution in the field of urban studies and geography, CPT has limited in suggesting an index that...

This study investigates the impact of the 2018 summer heat wave on urban mobility in Seoul and the role of economic complexity in the region's resilience. Findings from subway and mobile phone data indicate a significant decrease in the floating population during extreme heat wave, underscoring the thermal vulnerability of urban areas. However, urb...

The principle of relatedness, which helps estimate the affinity between economic activities, suggests that countries, regions and cities tend to undertake new economic activities when they already perform related activities. This empirical principle has been confirmed for various dimensions—cities, regions, and countries—and their activities—develo...

This paper examines the technological structures of the manufacturing and the ICT sectors in Korea to examine the potential shift of dominant technological sectors in the era of the Fourth Industrial Revolution (4IR). By using patent data of Korean firms from 1990 to 2021, we find that the manufacturing sector has been the dominant technological le...

Amenity clusters consisting of coffee shops, restaurants and other small businesses improve urban life and are a source of employment for city dwellers. Although most small business clusters were hit hard by restrictions imposed during the COVID-19 pandemic, some were able to adapt. What determines the economic resilience of amenity clusters? Using...

This research aims to identify factors that affect the technological transition of firms toward industry 4.0 technologies (I4Ts) focusing on firm capabilities and policy impact using relatedness and complexity measures. For the analysis, a unique dataset of Korean manufacturing firms' patent and their financial and market information was used. Foll...

The COVID-19 pandemic has fundamentally changed human mobility patterns in cities. Lockdowns, social distancing and flexible working hours have restructured pre-existing dynamics between two opposing forces in major cities: centripetal and centrifugal. To scrutinise the new dynamics, human mobility in the Seoul Metropolitan Area in early 2020 was i...

We examine the spillover effect of neighboring ports on regional industrial diversification and their economic resilience using the export data of South Korea from 2006 to 2020. First, we build two distinct product spaces of ports and port regions, and provide direct estimates of the role of neighboring ports as spillover channels spatially linked....

This research identifies factors that affect the technological transition of firms toward industry 4.0 (IT) technologies focusing on capabilities and policy impacts using relatedness and complexity measures. For the analysis, a unique dataset was used of Korean manufacturing firms’ patents and their financial and market information. Following the P...

We investigate predictors of anti-Asian hate among Twitter users throughout COVID-19. With the rise of xenophobia and polarization that has accompanied widespread social media usage in many nations, online hate has become a major social issue, attracting many researchers. Here, we apply natural language processing techniques to characterize social...

Amenity clusters that consist of coffee shops, restaurants, and other small businesses provide utility to urban life and jobs for city dwellers. While most small business clusters were hard hit by the restrictions imposed during the COVID-19 pandemic, others were able to adapt. What determines the economic resilience of amenity clusters? By using s...

Industrial diversification depends on spillovers from related industries and nearby regions, yet their interaction remains largely unclear. We study economic diversification in China during the period 1990-2015 and present supportive evidence on both spillover channels. We add to the literature by showing that these two channels behave as substitut...

The principle of relatedness, which helps estimate the affinity between economic activities, suggests that cities, regions, and countries are more likely to undertake new economic activities when they already perform related activities. This empirical principle has been confirmed for various dimensions---cities, regions, and countries---and their a...

This paper aims to show that the level of inequality increases via the human capital channel, with credit market imperfections generating negative effects on economic growth. We expand the model presented by Galor and Zeira (Galor and Zeira, Review of Economic Studies, 1993, 60, 35–52) to represent the fact that the economy benefits from endogenous...

This study investigates how structural change that leads to increasing output variety was gradually perceived by economists and eventually incorporated into models of economic growth. We trace the evolution of growth models from exclusively macroeconomic models to those that include micro and meso levels of aggregation, and further, to those that p...

During the last two decades, two important contributions have reshaped our understanding of international trade. First, countries trade more with those with whom they share history, language, and culture, suggesting that trade is limited by information frictions. Second, countries are more likely to start exporting products that are related to thei...

How do regions acquire the knowledge they need to diversify their economic activities? How does the migration of workers among firms and industries contribute to the diffusion of that knowledge? Here we measure the industry-, occupation-, and location-specific knowledge carried by workers from one establishment to the next, using a dataset summariz...

How do regions acquire the knowledge they need to diversify their economic activities? How does the migration of workers among firms and industries contribute to the diffusion of that knowledge? Here we measure the industry, occupation, and location-specific knowledge carried by workers from one establishment to the next using a dataset summarizing...

This paper investigates whether the German reunification strengthened the country’s national innovation system, using the Triple Helix (TH) model. In particular, it assesses the various dimensions of the innovation system by analyzing co-authorship networks from 1973 to 2014. Despite the series of policies promoting collaboration between the two re...

During the last decades two important contributions have reshaped our understanding of international trade. First, countries trade more with those with whom they share history, language, and culture, suggesting that trade is limited by information frictions. Second, countries are more likely to start exporting products that are similar to their cur...

During the last decades two important contributions have reshaped our understanding of international trade. First, countries trade more with those with whom they share history, language, and culture, suggesting that trade is limited by information frictions. Second, countries are more likely to start exporting products that are similar to their cur...

In 1990, Germany began the reunification of two separate research systems. In this study, we explore the factors predicting the East-West integration of academic fields by examining the evolution of Germany's co-authorship network between 1974 and 2014. We find that the unification of the German research network accelerated rapidly during the 1990s...

Industrial development is the process by which economies learn how to produce new products and services. But how do economies learn? And who do they learn from? The literature on economic geography and economic development has emphasized two learning channels: inter-industry learning, which involves learning from related industries; and inter-regio...

This study examined the relationship between land inequality and human capital accumulation in the Korean colonial period by using a panel data set from 1934 to 1942. Evidence of the adverse relationship between land inequality and the accumulation of human capital has thus far only been presented by using data from Western countries and from count...

This paper describes the co-evolution of East and West German innovation networks after the German reunification in 1990 by analyzing publication data from 1972 to 2014. This study uses the following four benchmark models to interpret and classify German innovation networks: the random graph model, the small-world model, the Barabási–Albert model,...

In this paper we explore the role that can be played by education in economic development using a model called TEVECON. Within the population of our economic system we distinguish two different social classes which differ for their level and quality of education and, as a consequence, for their human capital, wages and income per head. We vary the...

This study revisits the theory of Friedrich List from a more comprehensive and modernized perspective and applies it to the Korean history of industrialization. Although List is well known as the scholar who insisted on the protection of infant industry, his argument on protectionism is a part of the broader picture depicted in his book The Nationa...

Description of TEVECON model (Version 1.0.0)

This study aims to introduce a new analytical macroeconomic framework, the expanded reproduction system, that combines the accumulated wisdom of several contemporary economic models while also compensating for their shortcomings. This new framework may be used to study macroeconomic phenomena from both the supply and demand side over a number of di...

Unified Growth Theory suggests the demographic transition and the associated rise in human capital formation were critical forces in the transition from Malthusian stagnation to modern economic growth. This paper provides empirical evidence in support of this hypothesis based on the Korean industrialization in the late 20th century. Using a fixed e...

Against the background of inconclusive evidence about the inequality–growth relation, this paper suggests that the level of inequality increases via the human capital channel with credit market imperfections and that this increasing inequality negatively affects economic growth. We expand the model presented by Galor and Zeira (1993) to represent t...