A carbonate-banded iron formation transition in the Early Protorezoicum of South Africa

Seven new and two resurveyed stratigraphic sections through the important carbonate-BIF transition in Griqualand West are presented and compared with six published sections. Lateral correlation within this zone is attempted but the variability was found to be too great for meaningful subdivision. Substantial lithological irregularity is the only unifying character of this zone, for which the new name Finsch Member (Formation) is proposed. Vertical and lateral lithological variations as well as chemical changes across this zone are discussed with reference to environmental aspects. Local and regional considerations lead to the conclusion that fresh water-sea water mixing occurred in a shallowing basin

Tidal flat deposits of the Lower Proterozoic Campbell Group along the southwestern margin of the Kaapvaal Craton, Northern Cape Province, South Africa

Lower Proterozoic stromatolites and associated clastic carbonate deposits of the Campbell Group, from the southern margin (Prieska area) of the Kaapvaal Craton, northern Cape Province, are described. Contrary to previous interpretations (Beukes, 1978; 1980a) shallow subtidal to supratidal facies are recognised and discussed in regional context. An alternative model for the facies development of the Campbell Group is proposed

The impact on employer operating costs of low cost health insurance including an HIV/treatment benefit: results of a study of five employers in Namibia

This repository item contains a single issue of the Health and Development Discussion Papers, an informal working paper series that began publishing in 2002 by the Boston University Center for Global Health and Development. It is intended to help the Center and individual authors to disseminate work that is being prepared for journal publication or that is not appropriate for journal publication but might still have value to readers.OBJECTIVE: The impact of low-cost health insurance on the costs incurred by Namibian employers was measured. BACKGROUND: Namibia has a relatively recent HIV epidemic and adult HIV prevalence estimated at 15.3%. AIDS-related mortality would be rising in the absence of antiretroviral treatment. (ART). Medical schemes in Namibia now offer low-cost policies that include good coverage for treatment of AIDS, including ART. In 2006-2007, a number of large Namibian employers agreed to purchase such policies for their uninsured workers. METHODOLOGY: We compared data on worker attrition and related costs for the period before and after purchase of the low cost health insurance policy. RESULTS: Worker attrition (death and medical retirement) reported by the companies declined from a range of 1.5% to 2.0% of the work force in 2005 and 2006 to 0.7% to 1.1% in 2008. When data was pooled, attrition fell from a peak of 1.7% of the combined work force in 2005 to 0.9% in 2008. Attrition-related costs at the companies were lower in 2008 than in the peak attrition years. The downward trend in attrition appears to have begun before the date when the firms purchased the new policies. The 2008 value of the savings measured was less than the annual cost of the premiums for the new policies. DISCUSSION: Antiretroviral treatment appears to reduce workforce attrition and related costs for Namibian employers. However, we cannot say if this is a result of new low-cost insurance policies or the rapid expansion of ART in the public sector

The 50-year jubileum of the Society for the Promotion of Eriugenian Studies in the John Scottus Eriugena (815–877) research, 1970–2020

This article charters the history and work of the Society for the Promotion of Eriugenian Studies (SPES), which celebrated its 50-year jubileum in 2020. After a brief introduction to the thought of John Scottus Eriugena (815–877), with emphasis on his primary text (in five volumes), Periphyseon, written between 864 and 866 and condemned as heretical in 1050, 1059, 1210 and finally in 1225, the development of SPES over the past five decades is surveyed in detail and connected to an outstanding work published in the Brill’s Companions to the Christian Tradition series in Leiden (2020), under the editorship of Adrian Guiu (A Companion to John Scottus Eriugena). The article is descriptive and analytical in its presentation of the relevant history of ideas and synthetical in its attempt to coherently integrate the most recent secondary texts on the relevant philosophical themes in Eriugena research. Contribution: The article contributes to the Society for the Promotion of Eriugenian Studies’ 50-year jubileum by summarising its conference outputs over the past five decades in an extensive overview as well as connecting its work to A Companion to John Scottus Eriugena (Brill, Leiden, 2020), thereby furthering the society’s efforts and specialist research outputs to a broader, non-specialised readership

The case for post-scholasticism as an internal period indicator in Medieval philosophy

This article responds to a critical research challenge in Medieval philosophy scholarship regarding the internal periodisation of the register. By arguing the case for ‘post-scholasticism’ as an internal period indicator (1349–1464, the era between the deaths of William of Ockham and Nicholas of Cusa), defined as ‘the transformation of high scholasticism on the basis of a selective departure thereof’, the article specifies a predisposition in the majority of introductions to and commentaries in Medieval philosophy to proceed straight from 1349 to 1464, understating 115 years of pertinent Medieval philosophical discourse. It is argued that in the modern account of Medieval philosophy, this understatement is manifested in either a predating of Renaissance philosophy to close the gap between 1349 and 1464 as far as possible or in proceeding straight from 1349 to Renaissance philosophy. The article presents five unique philosophical themes from this delicate period, indicating that ‘post-scholasticism’ was indeed a productive period in late Medieval philosophy, which should not be bypassed as an inconsequential entrance to Renaissance philosophy. The period 1349–1464 should accordingly be appreciated for its idiosyncratic contributions to the history of ideas in the late-14th and early-15th centuries, with reference to the political intensification of the via moderna, the pivotal separation of philosophy and theology and the resulting independence of the natural sciences, in res critique of institutions, transforming pragmatics and the rise of philosophical materialism. Contribution: This article contributes to methodological development in Medieval philosophy by responding to a critical research challenge regarding the internal periodisation of the later Middle Ages. Arguing the case for ‘post-scholasticism’ as an internal period indicator (1349 to 1464 in Medieval philosophy, the article presents unique philosophical themes from the period, indicating that it was a productive stage in late Medieval philosophy which should not be bypassed as an inconsequential entrance to Renaissance philosophy

Kinders in die erediens

Children in public worshipFrom a biblical and historical point of view, it is clear that the child is totally part of the church of Christ, and therefore he must assemble regularly with the congregation in public worship. From an anthropological perspective, it is clear that the child, especially in the first three phases of his life, differs so greatly from the adult, that special attention should be given to him. Consequently the liturgist should bear the child in mind in every church service. From time to time special church services should be held where he focuses on the child in the first phases of his life, that is the child between five en twelve years of age

Value Investing: International Comparison

Based on accumulated empirical evidence, the academic community has generally come to agree that value investment strategies, on average, outperform growth investment strategies (Chan and Lakonishok, 2004:71). An influential article by Fama and French (1992) tested the notion that United States stock prices might be related to the ratio of a firm’s book value of common equity (BV) to its market value of common equity (MV). It found that companies with high book value relative to market value of equity (BV/MV) outperform the market. This finding led to extensive testing for the value premium in developed countries around the world. Fama and French (1998a) tested it with data from twelve major European countries, as well as from Australia and the Far East. They found that between 1975 and 1995 in almost every country, value stocks delivered a higher return than growth stocks. The value premium has not been tested with the same vigor in third world or developing countries, which raises the question whether the value premium is only a first world phenomena and, if not, how third world value premiums compare to those found in developed countries. This paper compares the size of the value premium in the USA, UK, and some continental European countries with South African data

The current four volumes of Michel Foucault’s Histoire de la sexualité: a review of the state of research, 2022

By providing a review of the present state of research regarding French historian of ideas Michel Foucault’s (1926-1984) current four-volume series Histoire de la sexualité, this essay highlights an acceleration in tempo after the publication of an edited fourth volume (Les aveux de la chair) in 2018. After providing an overview of the manuscript development of Les aveux de la chair, and the emergence of a pattern regarding the structural and chronological composition of Histoire de la sexualité, namely that the series should effectively be read backward from the first volume La volonté de savoir to the thematically last volume L’usage des plaisirs, several developing themes in the most recent scholarship on Histoire de la sexualité are noted and annotated. The report concludes with a presentation of two notable features of the current four volumes, namely its unconventional composition and existing historical gaps, regarding the Carolingian and post-Carolingian periods, later Middle Ages, Renaissance, Reformation, and Counter-Reformation

"Expenditure"

This dissertation endeavours to analyse the case Commissioner for the South African Revenue Service v Labat Africa Ltd and its consequences in order to conclude whether the tax law created by the court is sound. Specifically it looks at the progression of the case through the different courts, as well as the other court cases referred to in the different courts. The research found that the case defined, for the first time, the term "expenditure" for South African Income Tax purposes. It also found that the new definition may have created consequences for the interpretation of other sections of the Income Tax Act

Design and in vivo verification of a stress radiography device towards it's suitability for multi-ligament laxity measurements

The human knee is a hinge joint, primarily facilitating locomotion. Knee joint instability, due to ligament injuries, is a result of direct or indirect trauma, non-anatomical stresses during pivoting movements about the knee, imbalanced landing during jumping and rapid deceleration during high intensity locomotion. Biomechanical indications of an unstable knee joint include decreased joint integrity, hyperlaxity, abrupt locking and catching combined with clicking noises during locomotion. Approximately, two hundred and fifty thousand ACL injuries occur in the United States of America annually. Current diagnostic procedures are subjective according to the clinician's experience. This potentially leads to misdiagnosis of the injury and improper treatment. Non-invasive diagnostic techniques make use of manual methods, MRI and laxity measurement devices (e.g. arthrometers and stress radiography devices). Laxity measurement devices (the focus of this study) determine ligament health by measuring their elasticity and stiffness. Directional tibial and fibular bone translation is induced by applying an external load to the joint. The bone translation is measured in relation to the load applied, which denotes ligament laxity. The Laxmeter is a novel, cost effective and radiolucent multi-ligament laxity measurement stress radiography device. This device facilitates the measurement of MCL and LCL laxity at multiple degrees of knee joint flexion, however, it lacks the essential means to perform the laxity measurement technique. The current study aims to redesign the Laxmeter to perform ACL, PCL, MCL and LCL laxity measurement procedures at multiple fixed degrees of knee joint flexion. The in vitro functional verification of the device was limited to (according to scope) a single cadaver trial; to validate functionality, structural integrity, usability as well as demonstrate the Laxmeter concept prior to a prospective full clinical trial. The redesigned Laxmeter Prototype consists of a load applicator capable of applying a 250N load to various aspects of the proximal lower leg, to induce bone translation for laxity measurements. The load applicator is designed to integrate with the ergonomic patient support structure, the later potentially improving reproducibility and accuracy of the laxity measurement results. The cadaver trial demonstrated the device's capability of measuring the laxity of the ACL, MCL and LCL at predetermined knee flexion angles. To measure the ligament laxity, equal loads were applied to both proximal lower limbs independently. The bilateral average displacement of the tibia with respect to the femur for each ligament was noted. In the case of the ACL, the Laxmeter measured an average laxity of 3.07mm at 30° knee flexion and a load of 150N. The average laxities for the MCL and LCL at 30° knee flexion and 150N were 1.11mm and 2.02mm. The trial yielded preclinical results that were comparable with existing clinical and healthy cadaver based studies (using similar techniques), and suggests that the Laxmeter is capable of measuring the laxity of the ACL, MCL and LCL at various degrees of knee flexion. PCL laxity measurements could not be performed due to compromised structural integrity, which was essential to make the Laxmeter portable and lightweight. Future recommendations for the device include rotational ankle fixation; improved overall limb fixation; improved structural integrity to allow for PCL laxity measurements as well as further preclinical (functional) verification procedures prior to a full clinical trial