News

Travel Geography of the 9/11 Network

Domestic travel patterns of the 9/11 hijackers. The size of the cities is proportional to the number of trips between them. Source: Walther et al. (2022). Using publicly available sources from the 9/11 Commission, the FBI, and the U.S. Congress, Rafael Prieto, my students Joseph Padron and Jason Scheuer, and I mapped the travel patterns of the 19 … Continue reading Travel Geography of the 9/11 Network

African Border Disorders now available in Open Access

Our edited book “African Border Disorders. Addressing Transnational Extremist Organizations” is now available in Open Access, thanks to the generous support of the University of Florida. African Border Disorders explores the complex relationships that bind states, transnational rebels and extremist organizations, and borders on the African continent. Combining cutting edge network science with geographical analysis, the book highlights … Continue reading African Border Disorders now available in Open Access

African borderlands are becoming more violent

Source: OECD (2022) based on ACLED data. The growing importance of transnational conflicts in North and West Africa calls for more spatialized approaches that can map how borders shape political violence. While numerous single-case studies throughout the region have shown the salience of borderlands for violent groups, little is known about the overall relationships between … Continue reading African borderlands are becoming more violent

New NSF grant to study how Covid disrupt research networks

Image courtesy Alina Grubnyak on Unsplash Covid has significantly disrupted many international teams, especially those focused on basic and applied research in developing countries. To understand how the pandemic affects international collaboration networks, the National Science Foundation has awarded us a new EAGER grant for two years. Entitled “Inclusiveness and Diversity as Building Blocks of … Continue reading New NSF grant to study how Covid disrupt research networks

Network analysis of regional livestock trade in West Africa

The livestock sector is a major trade opportunity in West Africa, particularly for the Sahelian countries that supply major urban centers on the Gulf of Guinea. Yet, few attempts to formally describe the regional trade structure have been made so far. A new paper published in PLOS ONE today intends to fill this gap by … Continue reading Network analysis of regional livestock trade in West Africa

How Nigeria border closure could jeopardize Niger’s reexport trade

Since the election of President Buhari in Nigeria in 2015, Niger's trade is undermined by increased border controls that aim at limiting the import of banned products. A new paper published by Cahiers d'Outre-Mer with Moustapha Koné shows that Nigeria's unilateral decision to close its borders could jeopardize re-export trade and border cities in the … Continue reading How Nigeria border closure could jeopardize Niger’s reexport trade

New NASA-USAID grant to study urbanization and deforestation in Ghana

Ghana has experienced significant deforestation over the last decades. Much of the tropical forest has been lost as a result of agricultural expansion, mining, logging, and rapid urbanization. Our new project funded by NASA and USAID aims at examining these changes in Eastern and Central Ghana. More specifically, our goal is to model the linkages … Continue reading New NASA-USAID grant to study urbanization and deforestation in Ghana

The Border Studies Co-authorship dataset (1986-2018)

Border studies have become increasingly global over the past two decades. Yet, in a new paper published in the Journal of Borderlands Studies (JBS), we show that border scholars have a strong preference for publishing within their own country. Our paper builds on a novel database who contains the year, issue, names, and country of residence … Continue reading The Border Studies Co-authorship dataset (1986-2018)