Monocropping, intercropping or crop rotation? An economic case study from the West African Guinea savannah with special reference to risk

1994 ◽  
Vol 45 (2) ◽  
pp. 123-143 ◽  
Author(s):  
Gregor Peter ◽  
Artur Runge-Metzger
2021 ◽  
Author(s):  
Stanley Oifoghe ◽  
Nora Alarcon ◽  
Lucrecia Grigoletto

Abstract Hydrocarbons are bypassed in known fields. This is due to reservoir heterogeneities, complex lithology, and limitations of existing technology. This paper seeks to identify the scenarios of bypassed hydrocarbons, and to highlight how advances in reservoir characterization techniques have improved assessment of bypassed hydrocarbons. The present case study is an evaluation well drilled on the continental shelf, off the West African Coastline. The targeted thin-bedded reservoir sands are of Cenomanian age. Some technologies for assessing bypassed hydrocarbon include Gamma Ray Spectralog and Thin Bed Analysis. NMR is important for accurate reservoir characterization of thinly bedded reservoirs. The measured NMR porosity was 15pu, which is 42% of the actual porosity. Using the measured values gave a permeability of 5.3mD as against the actual permeability of 234mD. The novel model presented in this paper increased the porosity by 58% and the permeability by 4315%.


2020 ◽  
Vol 11 (3) ◽  
pp. 80-91
Author(s):  
Jean Small

Theatre Pedagogy holds that cognition is body-based. Through performance the body’s unconscious procedural memory learns. This information learned through repeated interaction with the world is transmitted to the brain where it becomes conscious knowledge. Theatre Pedagogy in this case study is based on the implementation of a Caribbean cultural art form in performance, in order to teach Francophone language and literature at the postsecondary level in Jamaica. This paper describes the experience of “doing theatre” with seven university students to learn the French language and literature based on an adaptation of two of Birago Diop’s folktales. In the process of learning and performing the plays, the students also understood some of the West African cultural universals of life which cut across the lives of learners in their own and in foreign cultural contexts.


1998 ◽  
Vol 5 (1) ◽  
pp. 23 ◽  
Author(s):  
Dolores Koenig ◽  
Tiéman Diarra

This article broadens analytic perspectives on the effects of government interventionsby looking at the interaction of two distinct but simultaneous policy initiatives: involuntary resettlement and structural adjustment. Case study data from the Bafing valley in Mali show that simultaneous implementation of these two initiatives reinforced the economic growth of the zone but increased negative environmental effects.Key Words: Mali, resettlement, structural adjustment, sahel, environmental degradation, economic development, river basin development, privatization, liberalization.


Author(s):  
Diana Bou Karam ◽  
Cyrille Flamant ◽  
Pierre Tulet ◽  
Martin C. Todd ◽  
Jacques Pelon ◽  
...  

Author(s):  
Shelley Lees ◽  
Luisa Enria

The impact of biomedicine and biomedical technologies on identity and sociality has long been the focus of medical anthropology. In this article we revisit these debates in a discussion of how unprecedented encounters with biomedicine during the West African Ebola outbreak have featured in Sierra Leoneans’ understandings of citizenship and belonging, using the case study of an Ebola vaccine trial taking place in Kambia District (EBOVAC Salone). Analysing our ethnographic material in conversation with a historical analysis of notions of belonging and citizenship, we show how participation in a vaccine trial in a moment of crisis allowed people to tell stories about themselves as political subjects and to situate themselves in a conversation about the nature of citizenship that both pre-dates and post-dates the epidemic.


2021 ◽  
Vol 9s11 ◽  
pp. 19-39
Author(s):  
Mariam Bjarnesen

In 2019, a new law banning vigilantism was adopted in the West African nation of Ghana. The law followed years of debate and violent incidents related to the presence of informally mobilised so-called �political vigilantes�, charged with providing security during political events. At first glance, the ridding of such state-competing elements through legal measures appears unproblematic and in line with democratic values. However, as this article argues, by drawing on the case study of Ghana and the pre-2020 election phase, such legal actions against non-state actors can be problematic and, in the worst case, constitute a threat to security and stability if public trust in authorities and formal state security providers is not sufficiently solid. Grounded in a broader discussion on security in fragile contexts and urban centres on the African continent, this article analyses the consequences of banning vigilantism where formal security provision is weak or not fully trusted.


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