Cowries in the archaeology of West Africa: the present picture

Despite the perceived importance of cowrie shells as indicators of long-distance connections in the West African past, their distribution and consumption patterns in archaeological contexts remain surprisingly underexplored, a gap that is only partly explicable by the sparse distribution of archaeological sites within the sub-continent. General writings on the timeline of importation of cowries into West Africa often fail to take into account the latest archaeological evidence and rely instead on accounts drawn from historical or ethnographic documents. This paper is based on a first-hand assessment of over 4500 shells from 78 sites across West Africa, examining chronology, shell species and processes of modification to assess what distribution patterns can tell us about the history of importation and usage of cowries. These first-hand analyses are paralleled by a consideration of published materials. We re-examine the default assumption that two distinct routes of entry existed — one overland from North Africa before the fifteenth century, another coming into use from the time sea links were established with the East African coast and becoming predominant by the middle of the nineteenth century. We focus on the eastern part of West Africa, where the importance of imported cowries to local communities in relatively recent periods is well known and from where we have a good archaeological sample. The conclusion is that on suitably large assemblages shell size can be an indication of provenance and that, while the present archaeological picture seems largely to confirm historical sources, much of this may be due to the discrepancy in archaeological data available from the Sahara/Sahel zone compared to the more forested regions of the sub-continent. Future archaeological work will clarify this matter

Perceived stressors of climate vulnerability across scales in the Savannah zone of Ghana: a participatory approach

Smallholder farmers in sub-Saharan Africa are confronted with climatic and non-climatic stressors. Research attention has focused on climatic stressors, such as rainfall variability, with few empirical studies exploring non-climatic stressors and how these interact with climatic stressors at multiple scales to affect food security and livelihoods. This focus on climatic factors restricts understanding of the combinations of stressors that exacerbate the vulnerability of farming households and hampers the development of holistic climate change adaptation policies. This study addresses this particular research gap by adopting a multi-scale approach to understand how climatic and non-climatic stressors vary, and interact, across three spatial scales (household, community and district levels) to influence livelihood vulnerability of smallholder farming households in the Savannah zone of northern Ghana. This study across three case study villages utilises a series of participatory tools including semi-structured interviews, key informant interviews and focus group discussions. The incidence, importance, severity and overall risk indices for stressors are calculated at the household, community, and district levels. Results show that climatic and non-climatic stressors were perceived differently; yet, there were a number of common stressors including lack of money, high cost of farm inputs, erratic rainfall, cattle destruction of crops, limited access to markets and lack of agricultural equipment that crossed all scales. Results indicate that the gender of respondents influenced the perception and severity assessment of stressors on rural livelihoods at the community level. Findings suggest a mismatch between local and district level priorities that have implications for policy and development of agricultural and related livelihoods in rural communities. Ghana’s climate change adaptation policies need to take a more holistic approach that integrates both climatic and non-climatic factors to ensure policy coherence between national climate adaptation plans and District development plans

Induction of lymphokine-activated killer activity in rat splenocyte cultures: The importance of 2-mercaptoethanol and indomethacin

The role of 2-mercaptoethanol and indomethacin in the induction of lymphokine-activated killer (LAK) activity by interleukin-2 (IL-2) in rat splenocyte cultures was investigated. Spleens from 4-month-old male rats of five different strains were tested. Splenocytes were cultured for 3-5 days in the presence of IL-2 (1000 U/ml) and LAK activity was assessed by 4-h51Cr release assays with P815 and YAC-1 cells as targets. LAK activity could be induced by IL-2 in splenocytes from all rat strains, but only when 2-mercaptoethanol was present in the culture medium. Optimal LAK activity was induced when the 2-mercaptoethanol concentration in splenocyte cultures was at least 5 μM. Different rat strains showed differences in levels of in vitro induction of LAK activity. In the presence of 2-mercaptoethanol the level of LAK activity induced by IL-2 was high in BN and Lewis rats, intermediate in Wistar and Wag rats, and low in DZB rats. In the absence of 2-mercaptoethanol no or minimal LAK activity was induced. Furthermore we observed that addition of 50 μm indomethacin to the culture medium in the presence of 2-mercaptoethanol augmented the induction of LAK activity to some extent. In the absence of 2-mercaptoethanol, addition of indomethacin resulted only in low levels or no induction of LAK activity. We conclude that for optimal induction of LAK activity by IL-2 in rat splenocyte cultures 2-mercaptoethanol is essential, while indomethacin can only marginally further improve this induction

The Effects of Fiscal Policy on Ghanaian Economy

As part of the Government role in formulating and implementing policies that drives economic output, the need to examine whether or not these policies affect economic growth is useful and timely. The study was conducted by regressing economic output on four fiscal variables such as: government consumption expenditure, taxes, and government investment expenditure and government transfers whilst private investments, labour force and terms of trade as the non-fiscal variables. The analyses were based on time series data covering the period of 1980-2016. The study applies the Dickey-Fuller test for stationary and bounds test approach to cointegration for the estimation of an autoregressive distributed lag model. The result shows that in the long-run government investments and government expenditure affect economic growth positively. Keywords: Expenditure, Growth, Fiscal policy; Budget; Government spending; GDP DOI: 10.7176/EJBM/11-26-14 Publication date:September 30th 201

The Impact of Selected Socioeconomic Factors on Asset Building in Rural Communities

The study examined the impact of selected socioeconomic factors on asset building. Using a questionnaire, data were obtained from a convenience sample of 204 participants from several Alabama Black Belt Counties, and analyzed using descriptive statistics and logit analysis. The results showed that a majority (64%) was willing to participate in an asset building program. Of this, an overwhelming majority (at most 70%) wanted to set up a small business; further their education, or purchase a home. In addition, one socioeconomic factor, age, had a statistically significant (p = 0.016) effect on willingness to participate in an asset building program. Consequently, it was recommended that policies and programs that encourage participation in asset building be put in place for residents in the study area, focusing on age as a key factor, among others, to improve wealth. Critical resources to use in this effort are the community-based organizations, and research institutions

Bringing toilets back to Kumasi's compound houses: landlord and tenant behaviours and motivators

In the low-income urban communities of Kumasi, Ghana, a large part of the population live in compound housing, where they often share the same living space with more than 20 tenants. Partly resulting from the high prevalence of public toilets in the city, the vast majority of these tenants have no access to ‘inhouse’ sanitation. Led by the Kumasi Metropolitan Assembly, a five-year strategy is being prepared to promote increased adoption, access, usage and maintenance of compound toilets in Kumasi’s lowincome communities. This paper shares the results of a desk and field-based study commissioned to inform the strategy: among the key challenges to be confronted are the clarification of responsibilities between landlords and tenants with regards to financing sanitation improvements, and the need to motivate landlords - at the hub of compound level sanitation governance - to improve the situation for the betterment of their tenants

Why Are Outcomes Different for Registry Patients Enrolled Prospectively and Retrospectively? Insights from the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF).

Background: Retrospective and prospective observational studies are designed to reflect real-world evidence on clinical practice, but can yield conflicting results. The GARFIELD-AF Registry includes both methods of enrolment and allows analysis of differences in patient characteristics and outcomes that may result. Methods and Results: Patients with atrial fibrillation (AF) and ≥1 risk factor for stroke at diagnosis of AF were recruited either retrospectively (n = 5069) or prospectively (n = 5501) from 19 countries and then followed prospectively. The retrospectively enrolled cohort comprised patients with established AF (for a least 6, and up to 24 months before enrolment), who were identified retrospectively (and baseline and partial follow-up data were collected from the emedical records) and then followed prospectively between 0-18 months (such that the total time of follow-up was 24 months; data collection Dec-2009 and Oct-2010). In the prospectively enrolled cohort, patients with newly diagnosed AF (≤6 weeks after diagnosis) were recruited between Mar-2010 and Oct-2011 and were followed for 24 months after enrolment. Differences between the cohorts were observed in clinical characteristics, including type of AF, stroke prevention strategies, and event rates. More patients in the retrospectively identified cohort received vitamin K antagonists (62.1% vs. 53.2%) and fewer received non-vitamin K oral anticoagulants (1.8% vs . 4.2%). All-cause mortality rates per 100 person-years during the prospective follow-up (starting the first study visit up to 1 year) were significantly lower in the retrospective than prospectively identified cohort (3.04 [95% CI 2.51 to 3.67] vs . 4.05 [95% CI 3.53 to 4.63]; p = 0.016). Conclusions: Interpretations of data from registries that aim to evaluate the characteristics and outcomes of patients with AF must take account of differences in registry design and the impact of recall bias and survivorship bias that is incurred with retrospective enrolment. Clinical Trial Registration: - URL: http://www.clinicaltrials.gov . Unique identifier for GARFIELD-AF (NCT01090362)

Social enterprises and the Sustainable Development Goals (SDGs): A Means to an End

Ghana is regarded as one of the main nations driving social enterprise development in all of Africa, despite the lack of a policy for the social enterprise sub-sector. Regardless of these trailblazing initiatives, the sub-sector is still young and vulnerable. As a result, the time is right for the government to implement policy reforms to expedite the growth of the sub-sector, which offers an alternative business model for the achievement of the social and environmental goals embodied in the global goals. All nations are urged to take immediate action in response to the United Nations’ (UN) Sustainable Development Goals (SDGs), which offer a global framework for achieving global development while balancing social, economic, and environmental sustainability. The methodology adopted is qualitative in nature, whereby focus group discussions were held, bringing together key stakeholders from the social enterprise sector, industry, academia, and civil society organisations (CSOs) to provide insights into how social enterprises will contribute to SDG achievement. This paper aims to generate new insights into how social enterprises can provide a solution to the UN’s SDGs from the Ghanaian perspective. Our findings reveal a strong link between solving social problems through social businesses and achieving the SDGs, and that social enterprises represent an ideal business model for achieving the SDGs. Their mission-driven approach, innovative solutions, focus on empowerment and inclusion, utilisation of market mechanisms, collaboration and partnership, and understanding and knowledge of local contexts collectively position social enterprises as powerful catalysts for sustainable development