Samuel Kortum

TL;DR: This article developed a Ricardian trade model that incorporates realistic geographic features into general equilibrium and delivered simple structural equations for bilateral trade with parameters relating to absolute advantage, comparative advantage, and geographic barriers.

TL;DR: In this paper, the authors reconcile trade theory with plant-level export behavior, extending the Ricardian model to accommodate many countries, geographic barriers, and imperfect competition, and examine the impact of globalization and dollar appreciation on productivity, plant entry and exit, and labor turnover.

TL;DR: This paper examined the influence of venture capital on patent applications in twenty industries over three decades and found that increases in venture capital activity in an industry are associated with significantly higher patenting rates.

TL;DR: This article examined the influence of venture capital on patents in the United States across twenty industries over three decades and found that increases in venture capital activity in an industry are associated with significantly higher patenting rates.

TL;DR: In this paper, the authors reconcile international trade theory with findings of enormous plant-level heterogeneity in exporting and productivity, and fit the model to bilateral trade among the United States and its 46 major trade partners, and see how well it can explain basic facts about U.S. plants: (i) productivity dispersion, (ii) the productivity advantage of exporters, (iii) the small fraction who export, and (iv) a small fraction of revenues from exporting among those that do).