Vision on the Identification of the Roles of Producers Concerned to Increase the Productivity of Gum Arabic: A Case Study of West Kordofan-Sudan for the Period 1994-2008

2013 ◽  
Author(s):  
Salih Mohammad Abulgasim
Keyword(s):  
Afrika Focus ◽  
2014 ◽  
Vol 27 (1) ◽  
Author(s):  
Patrick Van Damme

The present issue of Afrika Focus delves into the way in which the Democratic (what’s in a word...) Republic of Congo has been dealing with its ‘way to peace’, via an article that looks at the issue through a discourse analysis perspective. In another article, the growing pains that often accompany the road to democracy in Africa are illustrated by the case of Togo. A third piece in this issue, a case study from Kenya, examines the gum Arabic value chain. The gum is an adhesive and food additive, often used in sweets and soft drinks, and thus an important commodity bought by big multinational companies. For centuries, it has been a source of income for a number of sub-Sahara African countries. Moreover, wars have been fought over the staple – as recently as last year, May 2013, at least 60 people were killed in ethnic (...) clashes in Sudan's arid Darfur region, over land producing gum Arabic. The deaths were the result of an ongoing dispute between two ethnic groups in South Darfur, over pasture and acacia trees, from which the gum is obtained. The Gemir group accused the Beni-Halba community of trying to take away land it had owned for more than 300 years. This shows that even a neutral (to sweet) subject such as gum Arabic can help to illustrate, and even explain, the root causes of political unrest in a number of countries. And this brings us to the last and fourth article that, even though it deals with poetry, reiterates the same political thematic as highlighted above, as it deals with ‘contemporary Nigerian poets [that] have had to contend with the social and political problems besetting Nigeria’s landscape by using satire as a suitable medium’. Perhaps the latter is amongst the most viable – and maybe only – coping strategies to allow people to survive Nigeria’s (and any ‘difficult’ country’s) distressing environment: if you can’t beat them, laugh at them... 


2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.


2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.


2019 ◽  
Vol 42 ◽  
Author(s):  
Daniel J. Povinelli ◽  
Gabrielle C. Glorioso ◽  
Shannon L. Kuznar ◽  
Mateja Pavlic

Abstract Hoerl and McCormack demonstrate that although animals possess a sophisticated temporal updating system, there is no evidence that they also possess a temporal reasoning system. This important case study is directly related to the broader claim that although animals are manifestly capable of first-order (perceptually-based) relational reasoning, they lack the capacity for higher-order, role-based relational reasoning. We argue this distinction applies to all domains of cognition.


2019 ◽  
Vol 42 ◽  
Author(s):  
Penny Van Bergen ◽  
John Sutton

Abstract Sociocultural developmental psychology can drive new directions in gadgetry science. We use autobiographical memory, a compound capacity incorporating episodic memory, as a case study. Autobiographical memory emerges late in development, supported by interactions with parents. Intervention research highlights the causal influence of these interactions, whereas cross-cultural research demonstrates culturally determined diversity. Different patterns of inheritance are discussed.


Author(s):  
D. L. Callahan

Modern polishing, precision machining and microindentation techniques allow the processing and mechanical characterization of ceramics at nanometric scales and within entirely plastic deformation regimes. The mechanical response of most ceramics to such highly constrained contact is not predictable from macroscopic properties and the microstructural deformation patterns have proven difficult to characterize by the application of any individual technique. In this study, TEM techniques of contrast analysis and CBED are combined with stereographic analysis to construct a three-dimensional microstructure deformation map of the surface of a perfectly plastic microindentation on macroscopically brittle aluminum nitride.The bright field image in Figure 1 shows a lg Vickers microindentation contained within a single AlN grain far from any boundaries. High densities of dislocations are evident, particularly near facet edges but are not individually resolvable. The prominent bend contours also indicate the severity of plastic deformation. Figure 2 is a selected area diffraction pattern covering the entire indentation area.


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