Olivier J Walther
Datos Biográficos
| ID | 212413 |
|---|---|
| NOMBRE | Olivier J Walther |
| NOMBRES | Olivier J |
| APELLIDO | Walther |
| FIRMA | WALTHER O J |
| AFILIACIONES | University of Southern Denmark and Rutgers University; Rutgers University; University of Bordeaux and CNRS |
| VERIFICADO | No |
| TOTAL DE OBRAS | 14 |
| TOTAL DE CITAS | 32 |
| TOTAL COMO AUTOR | 14 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2014 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 3 |
Political Geography and the urgency of holding space for open and critical inquiry
Withdrawn
The Publisher regrets that this article is an accidental duplication of an article that has already been published in Political Geography, 116 (2025) 103268, https://doi.org/10.1016/j.polgeo.2024.103268 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal
Withdrawal notice to 'Making spaces for debate in the digital age' [Political Geography, 117 (2025) 103266]
The Publisher regrets that this article is an accidental duplication of an article that has already been published in Political Geography, 116 (2025) 103268, http://10.1016/j.polgeo.2024.103268 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal
Care, continuity, and meaningful change
Small steps
Mapping the Sahelian Space
This chapter examines the geographical meaning of the Sahel and its spatial dynamics. Unlike other approaches that define the Sahel as a bioclimatic zone or as an ungoverned area, it shows that the Sahel is primarily a space of circulation in which uncertainty has historically been overcome by mobility. The first section discusses how precolonial empires relied on a network of markets and cities that facilitated trade and social relationships acr…
Rebel fragmentation in Syria's civil war
In rebel-held Syria, an array of rebel organisations are nominally allied in their fight against the Syrian government and yet they remain internally divided. Rather than being a rare occurrence, fragmentation within rebel movements is a common phenomenon with wide-ranging consequences for its chances of success. The objective of this paper is to explain what has caused fragmented to occur in Syria from 2011 to 2017. Using a three-dimensional con…
African Border Disorders
Since the end of the Cold War, the monopoly of legitimate organized force of many African states has been eroded by a mix of rebel groups, violent extremist organizations, and self-defence militias created in response to the rise in organized violence on the continent. African Border Disorders explores the complex relationships that bind states, transnational rebels and extremist organizations, and borders on the African continent. Combining cutt…
Spatial and temporal diffusion of political violence in North and West Africa
This chapter explores the spatial and temporal diffusion of political violence in North and West Africa since 1997. Focusing on the distance and time between attacks and taking into consideration the transaction costs that state boundaries impose, the contribution analyzes what induces a group leader to attack at a location other than the one that would seem to yield the greatest overt payoff. The result is a “map” of North and West Africa that r…
Business, Brokers and Borders
The objective of this paper is to show how a formal approach to networks can make a significant contribution to the study of cross-border trade in West Africa. Building on the formal tools and theories developed by social network analysis, we examine the network organisation of 136 large traders in two border regions between Niger, Nigeria and Benin. In a business environment where transaction costs are extremely high, we find that decentralised …
Contested ‘Relational Policy Spaces’ in Two European Border Regions
Cross-border cooperation to promote economic development and political integration has been among the EU's key themes since the 1990s, and contemporary policy networks are considered useful organisational solutions. Focusing on transport policies in the border regions of Basel and Luxembourg, we analyse the persistency of national preferences among policy actors, mapping their perceived ‘policy spaces of action’ and conceptualising these policy s…
Islamic Terrorism and the Malian Rebellion
Using Social Network Analysis, this article illuminates the relationship between the Islamists and rebels involved in the Malian conflict. We use publicly available data to demonstrate that the connection between Islamists and rebels depends on brokers who defected from the Tuareg rebellion to radical groups. Our work also details the internal relationships within each of the subgroups. By using descriptive network analysis, we are able to show t…
West African Spatial Patterns of Economic Activities
Over the last 30 years, two different bodies of literature developed by both U.S. historians and francophone geographers have moved toward similar conclusions regarding West African economic spatial patterns. Despite their different backgrounds, both the " spatial factor " approach promoted by historians and the " mobile space " approach developed by geographers view exchange centers as nodes of transnational trade networks and places in producti…
Trade networks in West Africa
To date, most of the literature on trade networks in West Africa has considered networks in a metaphorical way. The aim of this paper is to go one step further by showing how social network analysis may be applied to the study of regional trade in West Africa. After a brief review of the literature, this exploratory paper investigates two main issues related to regional trade. We start by discussing how recent developments in regional trade in We…
Islamic Terrorism and the Malian Rebellion
Using Social Network Analysis, this article illuminates the relationship between the Islamists and rebels involved in the Malian conflict. We use publicly available data to demonstrate that the connection between Islamists and rebels depends on brokers who defected from the Tuareg rebellion to radical groups. Our work also details the internal relationships within each of the subgroups. By using descriptive network analysis, we are able to show t…
West African Spatial Patterns of Economic Activities
Over the last 30 years, two different bodies of literature developed by both U.S. historians and francophone geographers have moved toward similar conclusions regarding West African economic spatial patterns. Despite their different backgrounds, both the " spatial factor " approach promoted by historians and the " mobile space " approach developed by geographers view exchange centers as nodes of transnational trade networks and places in producti…
Trade networks in West Africa
To date, most of the literature on trade networks in West Africa has considered networks in a metaphorical way. The aim of this paper is to go one step further by showing how social network analysis may be applied to the study of regional trade in West Africa. After a brief review of the literature, this exploratory paper investigates two main issues related to regional trade. We start by discussing how recent developments in regional trade in We…
Care, continuity, and meaningful change
Rebel fragmentation in Syria's civil war
In rebel-held Syria, an array of rebel organisations are nominally allied in their fight against the Syrian government and yet they remain internally divided. Rather than being a rare occurrence, fragmentation within rebel movements is a common phenomenon with wide-ranging consequences for its chances of success. The objective of this paper is to explain what has caused fragmented to occur in Syria from 2011 to 2017. Using a three-dimensional con…
Withdrawn
The Publisher regrets that this article is an accidental duplication of an article that has already been published in Political Geography, 116 (2025) 103268, https://doi.org/10.1016/j.polgeo.2024.103268 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal
Small steps
Trade networks in West Africa
To date, most of the literature on trade networks in West Africa has considered networks in a metaphorical way. The aim of this paper is to go one step further by showing how social network analysis may be applied to the study of regional trade in West Africa. After a brief review of the literature, this exploratory paper investigates two main issues related to regional trade. We start by discussing how recent developments in regional trade in We…
Business, Brokers and Borders
The objective of this paper is to show how a formal approach to networks can make a significant contribution to the study of cross-border trade in West Africa. Building on the formal tools and theories developed by social network analysis, we examine the network organisation of 136 large traders in two border regions between Niger, Nigeria and Benin. In a business environment where transaction costs are extremely high, we find that decentralised …
Contested ‘Relational Policy Spaces’ in Two European Border Regions
Cross-border cooperation to promote economic development and political integration has been among the EU's key themes since the 1990s, and contemporary policy networks are considered useful organisational solutions. Focusing on transport policies in the border regions of Basel and Luxembourg, we analyse the persistency of national preferences among policy actors, mapping their perceived ‘policy spaces of action’ and conceptualising these policy s…
Islamic Terrorism and the Malian Rebellion
Using Social Network Analysis, this article illuminates the relationship between the Islamists and rebels involved in the Malian conflict. We use publicly available data to demonstrate that the connection between Islamists and rebels depends on brokers who defected from the Tuareg rebellion to radical groups. Our work also details the internal relationships within each of the subgroups. By using descriptive network analysis, we are able to show t…
West African Spatial Patterns of Economic Activities
Over the last 30 years, two different bodies of literature developed by both U.S. historians and francophone geographers have moved toward similar conclusions regarding West African economic spatial patterns. Despite their different backgrounds, both the " spatial factor " approach promoted by historians and the " mobile space " approach developed by geographers view exchange centers as nodes of transnational trade networks and places in producti…
African Border Disorders
Since the end of the Cold War, the monopoly of legitimate organized force of many African states has been eroded by a mix of rebel groups, violent extremist organizations, and self-defence militias created in response to the rise in organized violence on the continent. African Border Disorders explores the complex relationships that bind states, transnational rebels and extremist organizations, and borders on the African continent. Combining cutt…
Spatial and temporal diffusion of political violence in North and West Africa
This chapter explores the spatial and temporal diffusion of political violence in North and West Africa since 1997. Focusing on the distance and time between attacks and taking into consideration the transaction costs that state boundaries impose, the contribution analyzes what induces a group leader to attack at a location other than the one that would seem to yield the greatest overt payoff. The result is a “map” of North and West Africa that r…
Rebel fragmentation in Syria's civil war
In rebel-held Syria, an array of rebel organisations are nominally allied in their fight against the Syrian government and yet they remain internally divided. Rather than being a rare occurrence, fragmentation within rebel movements is a common phenomenon with wide-ranging consequences for its chances of success. The objective of this paper is to explain what has caused fragmented to occur in Syria from 2011 to 2017. Using a three-dimensional con…
Mapping the Sahelian Space
This chapter examines the geographical meaning of the Sahel and its spatial dynamics. Unlike other approaches that define the Sahel as a bioclimatic zone or as an ungoverned area, it shows that the Sahel is primarily a space of circulation in which uncertainty has historically been overcome by mobility. The first section discusses how precolonial empires relied on a network of markets and cities that facilitated trade and social relationships acr…
Small steps
Care, continuity, and meaningful change
Withdrawn
The Publisher regrets that this article is an accidental duplication of an article that has already been published in Political Geography, 116 (2025) 103268, https://doi.org/10.1016/j.polgeo.2024.103268 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal
Withdrawal notice to 'Making spaces for debate in the digital age' [Political Geography, 117 (2025) 103266]
The Publisher regrets that this article is an accidental duplication of an article that has already been published in Political Geography, 116 (2025) 103268, http://10.1016/j.polgeo.2024.103268 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal
Political Geography and the urgency of holding space for open and critical inquiry
Political science (11 obras) · Geography (9 obras) · Sociology (8 obras) · Economic geography (7 obras) · Politics (7 obras) · Law (6 obras) · Political economy (5 obras) · Computer Science (4 obras) · Business (3 obras) · Space (punctuation) (3 obras)