An Economic Approach to Allocating River Water to Estuaries in South Africa

Estuaries are last in line as a recipient of river water and for this reason they are particularly vulnerable to negative environmental impacts due to water scarcity and pollution. They only receive the runoff that has not been abstracted or prevented from reaching rivers. When this runoff is substantially reduced their functionality is undermined and they often become less attractive for recreational use. This paper explores some aspects entailed in efficiently managing the allocation of water to estuaries problem and some associated problems. It is shown that efficient management requires the marginal social costs of the inflows to be brought into equivalence with the marginal social values of the inflows, and these values may be estimated, but that there are the challenges in this estimation and in linking these estimates to the welfare of the people in whom the managers of river systems are (presumed to be) interested

The recreational value of beaches in the Nelson Mandela Bay area, South Africa

Using beach visitation data collected via the administration of a questionnaire to 226 respondents, this paper estimates a random utility model of beach recreation. The relative value of selected attributes of beaches is estimated, and the recreational values of lost access to four Blue Flag beaches in the Nelson Mandela Bay area, namely Kings beach, Humewood beach, Hobie beach and Wells Estate beach, respectively are calculated to be R44.73, R24.61, R37.85 and R2.68 per person, per trip.

An economic analysis of government expenditure allocations to black schooling in South Africa

In this thesis an assessment is made of the contribution of economic theory to the debate on government expenditure allocations to schooling in developing countries. Publicly provided Black schooling in South Africa is taken as the case study and viewed in the light of historical perspectives, as well as human capital, rent-seeking, welfare, liberal and contractarian theory. From an historical perspective, the willingness of Blacks to enrol at schools under National Party control, despite the poor quality of such schooling and lack of labour market incentives for them to do so, is paradoxical. It leads to the conclusion that under National Party administration the private benefit of Black schooling exceeded the private cost; a situation which is argued to have been influenced by rent-seeking. The propositions that government expenditure on Black schooling is a profitable social investment, and that rent-seeking has influenced the allocations of government expenditure on Black and White education are then investigated. Empirical support is found for both propositions, but it is based on the use of controversial methods and measures. The provision of education by the state can be justified on many economic grounds; the most popular being that this improves welfare by bringing about a better distribution of income or by redressing market failure. However, as there are major problems with this approach, it is concluded that neoclassical welfare theory fails to provide a persuasive justification for current levels of government expenditure on Black schooling. The provision of Black schooling by the state can also be justified in terms of liberal objectives. Classical and reform liberalism and their respective conclusions are examined. Marxist views on the role played by the state in the provision of education are also considered, but not found to be appropriate. Two contractarian assessments of the government's role in the provision of Black schooling are also provided in this thesis. They are based on the works of John Rawls (1971 and 1974) and James Buchanan (1986). The approach taken by James Buchanan is argued to be more appropriate to South African circumstances than Rawls's, and it is in the context of the former that problems with respect to public decisions on education and possible solutions to them are discussed. The conclusion of the thesis is that economic theory offers only a limited explanation for government expenditure allocations to Black education in South Afric

Some theoretical considerations in applying cost-benefit analysis to Black education in South Africa

From introduction: In this thesis some of the economic theory underlying the application of cost-benefit analysis to education is considered with the view to discussing its relevance to the field of educational provision for Black people in South Africa. The fact that educational facilities available to Blacks are so vastly inferior to those of the Whites has given rise to virtual consensus that more has to be provided for the Black population. The economic implications of education are frequently cited to support this viewpoint. Using (a ) the theoretical bases established in chapters 1 and 2, (b) the review of the rate of return to education studies in chapter 3 and (c) the broader socio-economic considerations introduced in chapter 4, it is concluded that this viewpoint is not necessarily well founded in South Africa and that the potential for greater use of the techniques described, is far from exhausted

Port Elizabeth's prioritisation of the Coega Port/IDZ over municipal services

This detailed case study and comparison of the Coega Port and Industrial Development Zone with the city of Port Elizabeth (25 kilometers away) allows a variety of social, economic and ecological factors associated with resource utilisation to be considered. The contrast between the Spatial Development Initiative (SDI) approach and a development strategy based on meeting basic needs could not be greater. A basic needs infrastructure investment and cross-subsidization strategy would generate both human comfort and economic activity that transcends the current provision of municipal services. Coega is envisaged as a transport and industrial production node

Draining the Swamp: Micro Virtual Machines as Solid Foundation for Language Development

Many of today\u27s programming languages are broken. Poor performance, lack of features and hard-to-reason-about semantics can cost dearly in software maintenance and inefficient execution. The problem is only getting worse with programming languages proliferating and hardware becoming more complicated. An important reason for this brokenness is that much of language design is implementation-driven. The difficulties in implementation and insufficient understanding of concepts bake bad designs into the language itself. Concurrency, architectural details and garbage collection are three fundamental concerns that contribute much to the complexities of implementing managed languages. We propose the micro virtual machine, a thin abstraction designed specifically to relieve implementers of managed languages of the most fundamental implementation challenges that currently impede good design. The micro virtual machine targets abstractions over memory (garbage collection), architecture (compiler backend), and concurrency. We motivate the micro virtual machine and give an account of the design and initial experience of a concrete instance, which we call Mu, built over a two year period. Our goal is to remove an important barrier to performant and semantically sound managed language design and implementation

Preventable emergency hospital admissions among adults with intellectual disability : comparisons with the general population in England

Purpose Adults with intellectual disabilities (ID) experience poorer physical health and healthcare quality, but there is limited information on the scope for reducing emergency hospital admissions. We describe overall and preventable emergency admissions for adults with ID compared to the general population and assess differences in primary care management before admission for two common Ambulatory Care Sensitive conditions (ACSCs). Methods We used electronic records to study a matched cohort of 16,666 adults with ID and 113,562 age, sex and practice matched controls from 343 English family practices. Incident rate ratios (IRR) from conditional Poisson regression are analysed for all emergency and preventable (ACSC) emergency admissions. Primary care management of lower respiratory (LRTI) and urinary tract (UTI) infections, as exemplar ACSCs, prior to admission are compared in unmatched analysis between adults with and without ID. Results The overall rate for emergency admissions for adults with ID versus controls was 182 vs. 68 per 1000/year (IRR=2.82, 95%CI: 2.66–2.98). ACSCs accounted for 33.7% of emergency admissions compared to 17.3% in controls (IRR=5.62, 5.14-6.13); adjusting for comorbidity, smoking and deprivation did not explain the difference (IRR=3.60, 3.25–3.99). Despite adults with ID being at nearly five times higher risk for admissions from LRTI and UTI, they have similar primary care utilisation, investigation and management preceding admission, as the general population. Conclusion Adults with ID are at high risk of preventable emergency admissions. Identifying improvements for detection and management of ACSCs in primary care, including lower respiratory and urinary tract infections, could reduce hospitalisations

Valuing user preferences for improvements in public nature trails around the Sundays River Estuary, Eastern Cape, South Africa

Many valuations have been made of changes to in-estuary attributes, but few have been made of out-of-estuary attributes. From a recreation perspective, an important type of out-of-estuary attribute is the availability of public paths by which to access attractive features of the estuary environment. This paper values an improvement in the level of public access in the form of an additional nature trail along the banks of the Sundays River Estuary in the Eastern Cape, but does not compare this value with the costs. By means of choice experiment modelling analyses it is estimated that in 2010 the marginal willingness to pay for an investment in a nature trail was R34 per user per annum. In order to determine whether the development of this trail is efficient, this benefit (R34 per user per annum) needs to be compared to the cost of the development, an analysis that remains to be done. However, this finding does serve to provide guidance on how much funding could efficiently be allocated to such a development – about ZAR1.22 million, assuming a social discount rate of 8.38%

Measuring the indirect costs associated with the establishment of a wind farm: An application of the contingent valuation method

Although a green energy source, the location of electrical generating wind turbines may cause a disamenity effect (negative externality). The establishment of a wind farm is known as a locally undesirable land use (LULU) and leads to the not in my backyard syndrome (NIMBY). In an application of the contingent valuation method (a survey technique which elicits individuals’ preferences and measures these preferences in monetary terms) a willingness to accept a framework was used to estimate the aggregate annual compensation required to allow the construction of a wind farm near Jeffrey’s Bay, South Africa. This compensation amounted to R490 695. A binary choice Logit analysis found that retirement status, concern about climate change, concern about view shed impacts and the offer amount are important predictors of voting for or against the project

Health characteristics and consultation patterns of people with intellectual disability: a cross-sectional database study in English general practice.

BACKGROUND: People with intellectual disability (ID) are a group with high levels of healthcare needs; however, comprehensive information on these needs and service use is very limited. AIM: To describe chronic disease, comorbidity, disability, and general practice use among people with ID compared with the general population. DESIGN AND SETTING: This study is a cross-sectional analysis of a primary care database including 408 English general practices in 2012. METHOD: A total of 14 751 adults with ID, aged 18-84 years, were compared with 86 221 age-, sex- and practice-matched controls. Depending on the outcome, prevalence (PR), risk (RR), or odds (OR) ratios comparing patients with ID with matched controls are shown. RESULTS: Patients with ID had a markedly higher prevalence of recorded epilepsy (18.5%, PR 25.33, 95% confidence interval [CI] = 23.29 to 27.57), severe mental illness (8.6%, PR 9.10, 95% CI = 8.34 to 9.92), and dementia (1.1%, PR 7.52, 95% CI = 5.95 to 9.49), as well as moderately increased rates of hypothyroidism and heart failure (PR>2.0). However, recorded prevalence of ischaemic heart disease and cancer was approximately 30% lower than the general population. The average annual number of primary care consultations was 6.29 for patients with ID, compared with 3.89 for matched controls. Patients with ID were less likely to have longer doctor consultations (OR 0.73, 95% CI = 0.69 to 0.77), and had lower continuity of care with the same doctor (OR 0.77, 95% CI = 0.73 to 0.82). CONCLUSION: Compared with the general population, people with ID have generally higher overall levels of chronic disease and greater primary care use. Ensuring access to high-quality chronic disease management, especially for epilepsy and mental illness, will help address these greater healthcare needs. Continuity of care and longer appointment times are important potential improvements in primary care