This paper investigates by means of USPTO patent data whether technological relatedness was a crucial driving force behind technological change in 366 U.S. cities from 1981 to 2010. Based on a three-way fixed effects model, we find that the entry probability of a new technology in a city...

The goal of this paper is to explore the social foundations of regional innovation by analyzing the role of universities in promoting technology transfer and the creation of innovation networks. The argument put forward is that regional innovation benefits from, and is stimulated by, horizontal...

In this paper, we analyze the geography of knowledge spillovers in biotech by investigating the way in which knowledge ties are organized. Following a relational account on knowledge spillovers, we depict knowledge networks as complex evolving structures that build on pre-existing knowledge and...

The 1980 patent granted to Stanley Cohen and Herbert Boyer for their development of rDNA technology played a critical role in the establishment of the modern biotechnology industry. From the birth of this general purpose technology in the San Francisco Bay area, rDNA-related knowledge diffused...

This paper aims to study the origin of the role of diversity in the new ICT ecosystem, and show how the gigantic platform influences on the level of diversity of content. Using genetic algorithm, it makes possible to reflect the new ICT ecosystem and experiment how the system is changing content...

Most previous studies examine the relationship between stock market returns and volatility using low frequency data such as daily or weekly basis. In this study, using the high frequency intraday data, we expand the scope of prior studies to investigate the relationship of short-term changes of...

The role of ICT in the economic growth in Korea is a great attraction to the telecommunication society interested in the relationship among ICT, innovation policy and economic growth. However, prior research concentrates on investigating the effect of policy on innovation and economic growth,...

We develop a conditional version of the consumption capital asset pricing model (CCAPM) using the conditioning variable from the cointegrating relation among macroeconomic variables (dividend yield, term spread, default spread, and short-term interest rate). Our conditioning variable has a...

Using a comprehensive database on equity funds in Korea, we investigate the performance and performance persistence with investment style employing the Fama and French three-factor model and the Carhart four-factor model. The paper finds that most investment styles in Korea noticeably outperform...