Economic Costs of Capital Flow Episodes in South Africa

Author(s):  
Nombulelo Gumata ◽  
Eliphas Ndou
Solid Earth ◽  
2015 ◽  
Vol 6 (2) ◽  
pp. 633-641 ◽  
Author(s):  
K. E. Seutloali ◽  
H. R. Beckedahl

Abstract. Erosion on roadcuts is a concern due to the potential of causing environmental degradation, which has significant economic costs. It is therefore critical to understand the relationship between roadcut characteristics and soil erosion for designing roadcuts that are less vulnerable to erosion and to help road rehabilitation works. This study investigated the characteristics (i.e. gradient, length, percentage of vegetation cover and soil texture) of degraded (i.e. with rills) and non-degraded roadcuts (i.e. without rills) and explored the relationship of the roadcut characteristics with the dimensions (widths and depths) of the rills. Degraded roadcuts were steep (52.21°), long (10.70 m) and had a low percentage of vegetation cover (24.12) when compared to non-degraded roadcuts which had a gradient of 28.24°, length of 6.38 m and 91.7% of vegetation cover. Moreover, the gradient and percentage of vegetation cover of the roadcut significantly determine the rill dimensions. The widths and depths of the rills increase with the increase in slope gradient and decrease with an increase in percentage of vegetation cover. Moreover, the widths and depths of the rills decreased downslope of the roadcuts. Based on these results, re-vegetation of roadcuts as well as construction of gentle gradients could minimise rill erosion and hence the negative on-site and off-site effects.


Author(s):  
Micheal Kofi Boachie ◽  
Laura Rossouw ◽  
Hana Ross

Abstract Introduction Chronic, noncommunicable diseases are on the rise globally, with tobacco consumption being an important contributing risk factor. These increases result in significant economic costs due to increased healthcare costs, productive lives lost, and productive days lost due to illness. Estimates of these economic costs are scarce in low- and middle-income countries. Methods Drawing on a diverse range of data sources, direct healthcare costs, and productivity losses due to illness and premature deaths were estimated using the cost-of-illness approach. The present value of lifetime earnings was used to estimate productivity losses from premature deaths. Results We estimate that 25 708 deaths among persons aged 35–74 in 2016 are smoking-attributable. The economic cost of smoking was R42 billion (US$2.88 billion), of which R14.48 billion was for healthcare costs (hospitalization and outpatient department visits). The economic cost of smoking amounted to 0.97% of the South African GDP in 2016, while the healthcare cost of smoking-related diseases was 4.1% of total South African health expenditure. The costs are lower for women because of their lower smoking prevalence. Conclusion The economic burden of smoking calls for a further scaling-up of tobacco-control interventions in South Africa. Implications This article addresses the paucity of research on the detailed economic costs of smoking in low-and middle-income countries, including South Africa. Our calculations, based on an extensive range of recent data, provide the most detailed estimate to date and include quantification of the direct and indirect costs of smoking in South Africa. We found that the magnitude of the costs related to smoking in South Africa is larger than in the previous estimates and that for every Rand received in the form of cigarette tax, society loses 3.43 Rands. This article provides an economic case for evidence-based tobacco control in South Africa.


2006 ◽  
Vol 20 (1) ◽  
pp. 55-89 ◽  
Author(s):  
Clive Bell ◽  
Shantayanan Devarajan ◽  
Hans Gersbach
Keyword(s):  

2015 ◽  
Vol 7 (1) ◽  
pp. 393-417
Author(s):  
K. E. Seutloali ◽  
H. R. Beckedahl

Abstract. Erosion on roadcuts is a concern due to potential to cause environmental degradation which has significant economic costs. It is therefore critical to understand the relationship between roadcut characteristics and soil erosion for designing roadcuts that are less vulnerable to erosion and to help road rehabilitation works. This study investigated the characteristics (i.e. gradient, length and percentage of vegetation cover) of degraded (i.e. with rills) and non-degraded roadcuts (i.e. without rills) and explored the relationship of the roadcut characteristics with the dimensions (widths and depths) of the rills. Degraded roadcuts were steep (52.21°), long (10.70 m), and had a low percentage of vegetation cover (24.12) when compared to non-degraded roadcuts which had a gradient of 28.24°, length of 6.38 m and 91.7% of vegetation cover. Moreover, the gradient and percentage of vegetation cover of the roadcuts significantly determined the rill dimensions. The widths and depths of the rills increased with the increase in slope gradient and decreased with an increase in percentage of the vegetation cover. Moreover, the widths and depths of the rills decreased downslope of the roadcuts. Based on these results, re-vegetation of roadcuts as well as construction of gentle gradients could minimise rill erosion and hence the negative onsite and offsite effects.


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