Thesis (MBA) -- Stellenbosch University, 2012. / ENGLISH ABSTRACT: The elements of concern around ethics and how individuals conducted business were highlighted as key contributors to the economic recession experienced globally, especially after the sub-prime crisis in 2008. The subject matter of corporate governance and good governance has therefore become highly relevant. South Africa, although affected by the economic crisis, was not as affected as the United States and most first-world and developed countries, due to strong legislation and governance within our financial frameworks. Although South Africa was not exempt from the fallout, and our real estate market also entered an economic recession, the impact was far less than in the United States and other developed countries. This research study explores one of the elements or stakeholders of the real estate market, namely, the mortgage origination industry and the lack of a governance framework for this industry. The advantages and benefits to the industry should a framework be adapted are investigated. The mortgage origination industry in South Africa, and even globally, is a relatively new business concept, which emerged approximately ten years ago. Most countries have adopted a governance and regulatory framework; however, South Africa has not implemented an accepted industry body that has been properly scoped and implemented and is adding material benefit. The National Association of Mortgage Originators (NAMO) was a body established under the pretences of becoming the regulatory framework; however, this has fallen well short of expectations and has been subject to much ridicule and lacks any integrity. In reviewing the various governance models across the globe and even more specifically the mortgage industry frameworks, this report presents a proposed framework, and argues that the appropriate model in the South African environment would be one of self-regulation, as opposed to a legislated framework. The benefits and advantages of the self-regulated framework outweigh the legislative frameworks and are presented as the appropriate model for the South African mortgage origination industry.

Master of Agribusiness / Department of Agricultural Economics / Keith Harris / The growing number of participants in the grain market shows just how globalized this sector is in Brazil nowadays. It is difficult to distinguish between mergers and acquisitions of local companies and that of investment funds, which are actively engaged in acquiring a part or even the totality of Brazilian companies. For instance, the soybean crushing company “XYZ” that acquired some assets such as crushing plants in the state of Mato Grosso, located on the center-west region of Brazil and access to two port terminals to export the byproducts. This thesis contains data from January of 2014 to September of 2017, which includes prices of soybean and by products, freight rates, basis at the ports and operational costs. This information is from different sources including government and private agencies and Thomson Reuters Eikon software. This information was used to build a model in Microsoft Excel and by using the Risk Solver Platform, a statistic calculator tool and to find a solution to improve “XYZ” profitability. The results of the model suggest changes in the origination of grains, a reduction of the volume in some locations and increasing the volume originated in other locations. After running two different scenarios, “XYZ” profit increased by 3.81 million of Brazilian Reais.

The origin of marine biodiversity in the Indo-Pacific is poorly known. Faunal turnover in scleractinian reef corals has been hypothesised over the Miocene-Pliocene boundary (~5 Ma), in the Malay Archipelago. However, there is little information available on origination and extinction events in reef corals during the same period for the broader Indo-Pacific region. This is important because many species probably had a wider distribution than previously thought, and many more genera than has previously been estimated were probably present in the Indo-Pacific during the Neogene. Here I begin to fill the gap in our knowledge by reporting on the taxonomic composition and diversity of Neogene reef coral communities sampled from Indonesia (Salayar), Papua New Guinea (New Britain), and Fiji (Vanua Balavu). Sampling locations were chosen on their reported age, fossil content and preservation quality. Ages were refined using foraminiferal assemblages and Strontium 87/86 isotope ages of samples collected at the sampling locations. This dual approach confirms a middle Miocene to early Pleistocene age range for the collection. I described 155 species of reef forming corals collected across an Indo-Pacific longitudinal gradient. Twenty-two constitute new, extinct species from the genera Alveopora, Astreopora, Caulastrea, Cyphastrea, Echinopora, Euphyllia, Galaxea, Leptoria, Leptoseris, Madracis, Montipora, Platygyra, Symphyllia and Turbinaria. A further 42 taxa could not be assigned to species level due to poor preservation, but may well be additional new, extinct species. I uncovered a general pattern of coral turnover across the Indo-Pacific by investigating the degree to which coral communities (using both presence/absence and relative abundance of both coral species and genera) varied with water depth, time and geographical distribution. Coral communities were found to vary with global sea level and time. Thus global changes in sea level through time potentially drove extinction and origination in Indo-Pacific Neogene corals. Inverse Lyellian analysis indicates that of species present in the Miocene in New Britain, a mean of 41.8% are now extinct, possibly resulting from restricted flow of oceanic currents in that region. Indonesia (mean = 9.4%); and Fiji (mean = 6.6%) both had significantly lower proportions of extinct species. However, there is a decline in the number of extinct species found at any location from the middle Miocene (mean = 23.2%) to the early Pleistocene (mean = 1.8%). This study supports previously proposed models of an early Pliocene turnover event in Scleractinia in the Indo-Pacific.

This doctoral research has the purpose of articulating a consistent presentation of the Buddhist concept of selflessness as explained by the great Tibetan Buddhist scholar Tsongkhapa (Tibet, 13571419 CE), who composed some major philosophical masterpieces about this key Buddhist concept based on Ngrjuna´s (India, ca 150250 CE) famous Mla-madhyamaka-krik (MMK). Tsongkhapa presents himself as a follower of Ngrjuna, that is, as a proponent of the \'Middle Way\' (madhyamaka, dbu ma pa) Buddhist philosophical school. As our study of the first treatise in which he presents his view on selflessness advanced, we realized that it was necessary to dedicate part of our research to the analysis of the epistemological theory that substantiates his explanation of selflessness, since his approach to the subject is based on the use of what he calls \'rational analysis\' and \'inferential knowledge\'. Therefore, a preliminary part of our thesis is dedicated to the clarification of Tsongkhapa´s conceptions of rational analysis and inferential knowledge, which are based primarily on the theory of \'valid cognition\' (pramna, tshad ma) elaborated centuries earlier by the great Indian scholar Dharmakrti (6th and 7th centuries CE). The next stage of our research was guided by the following question: since, for Tsongkhapa, not possessing a self means the same as not possessing a nature (svabhva, rang zhin), a concept upon which Dharmakrti´s explanation of inferential knowledge is based, how does Tsongkhapa combine his presentation of selflessness with Dharmakrti´s epistemology without generating internal contradictions in his system? We have concluded that, in Tsongkhapa´s presentation of selflessness as united with causation, that is, as one implying the other due to the introduction of the key distinction between \'inherent nature\' and \'mere nature\', there is no contradiction between his epistemological use of inferences based on the notion of mere natures (recognized as conventional) and his final ontological assertion that phenomena lack inherent natures. / A presente pesquisa de doutoramento tem por finalidade articular uma apresentação consistente do conceito budista de anatma (ausência de identidade) segundo a explicação do grande pensador tibetano Tsongkhapa (Tibete, 13571419 D.C.), que compôs relevantes obras filosóficas sobre esse conceito budista fundamental, baseadas no famoso tratado Mla-madhyamaka-krik (MMK) de Ngrjuna (Índia, ca 150250 D.C.). Tsongkhapa se apresenta como um seguidor de Ngrjuna, ou seja, como um proponente da escola de filosofia budista \'Caminho do Meio\' (madhyamaka, dbu ma pa). À medida que nosso estudo do primeiro tratado em que ele articula sua visão da noção de anatma (ausência de identidade) se desenvolvia, percebemos que seria necessário dedicar parte de nossa pesquisa à análise da teoria epistemológica que fundamenta sua explicação da \'ausência de identidade\' (dos fenômenos), visto que sua abordagem baseia-se na utilização do que ele chama de \'análise racional\' e \'conhecimento por inferência\'. Dessa forma, a primeira parte de nossa tese é dedicada à compreensão das noções de \'análise racional\' e \'conhecimento por inferência\' usadas por Tsongkhapa, que se baseiam principalmente na teoria sobre as \'cognições válidas\' (pramna, tshad ma), elaborada séculos antes pelo grande pensador indiano Dharmakrti (séculos VI e VII). A etapa seguinte de nosso trabalho teve como fio-condutor a seguinte questão: visto que, para Tsongkhapa, a ausência de identidade (anatma, dak me) significa o mesmo que não ser dotado de uma \'natureza\' (svabhva, rang zhin), conceito sobre o qual a explicação de Dharmakrti do conhecimento por inferência se baseia, como Tsongkhapa elabora conceitualmente a articulação da epistemologia de Dharmakrti com sua explicação da ausência de identidade dos fenômenos sem gerar contradições internas em seu sistema? Concluímos que, na apresentação de Tsongkhapa, em que a noção de causalidade passa a implicar a de \'ausência de identidade\' devido à introdução da distinção essencial entre \'natureza inerente\' e \'mera natureza\', não há contradição entre seu uso epistemológico de inferências baseadas na noção de \'meras naturezas\' (reconhecidas como convencionais) e sua afirmação ontológica final da ausência de natureza inerente nos fenômenos.

This study aims to explain the relationship between FET policy origination and management practices at college level in Gauteng. Empirical evidence shows that there exist a gap between policy and practice. Literature points out that since 1994 South Africa has passed laws that created favorable conditions for policy development. The success or failure of government FET policies can be judged at college level. According to research some managers in former technical colleges lack skills and knowledge to successfully implement government transformation initiatives. Lack of management capacity at college level is cited as the reason for the non-implementation of policy. Policy makers derive policy from political, social and economic imperatives and infuse this with theoretical sources that describe how the policy process works and are often less sensitive to the practical conditions in which the policy is to be implemented. Conversely, policy implementers are primarily guided by contextual and systemic considerations as they implement policy. In this thesis it is argued that understanding the processes of policy development and implementation can assist in explaining the relationship between government policy and management practices at college level. The study interrogates policy intentions by analyzing the original meaning of FET policy from the originators’ perspective and juxtaposes this with the understanding of policy implementation from the implementers’ perspective and describe the relationship between intended and implemented policy. A qualitative research design using semi-structured interviews to gather data from participants was used. Purposive sampling was used to select participants from policy originators and college managers. Six main themes were distilled from the data collected: centralization vis-a vis decentralization; resources; structures; curriculum; governance, and strategic planning. Findings revealed how issues of power and authority affect policy development and implementation. The study establishes that policy implementers need capacity, power and authority to plan and make decisions on policy implementation, but decision-makers at higher levels of the system often subjugate these powers. For policy implementation to match policy intentions policy implementers need capacity and authority to understand, plan and make policy implementation decisions. / Thesis (PhD (Education Management, Law and Policy))--University of Pretoria, 2008. / Education Management and Policy Studies / PhD / unrestricted

No description available.

No description available.

In June 2012, the Supreme Court of the United States decided the fate of the Patient Protection and Affordable Care Act in a case called National Federation of Independent Business v. Sebelius. While initially the decision seemed favorable to supporters of the bill, Chief Justice Roberts’ majority opinion could likely render the bill ineffective in implementation and it creates more Constitutionally confusing precedent than it resolves. Among the questions that now rise to the surface are: will Congress be able to raise the tax to a level where it will become effective? What is now mandatory for states to adopt into their Medicaid programs? Where is the line for the federal government with regards to coercion? What are the definitions of direct and indirect taxes? And, how binding is the Origination Clause of the Constitution?

Load distribution problems in distributed computing networks have attracted much attention in the literature. A major objective in these studies is to distribute the processing load so as to minimize the time of processing of the entire load. In general, the processing load can be indivisible or divisible. An indivisible load has to be processed in its entirety on a single processor. On the other hand, a divisible load can be partitioned and processed on more than one processor. Divisible loads are either modularly divisible or arbitrarily divisible. Modularly divisible loads can be divided into pre-defined modules and cannot be further sub-divided. Further, precedence relations between modules may exist. Arbitrarily divisible loads can be divided into several fractions of arbitrary lengths which usually do not have any precedence relations. Such type of loads are characterized by their large volume and the property that each data element requires an identical and independent processing. One of the important problems here is to obtain an optimal load distribution, which minimizes the processing time when the distribution is subject to communication delays in the interconnecting links. A specific application in which such loads are encountered is in edge-detection of images. Here the given image frame can be arbitrarily divided into many sub-frames and each of these can be independently processed. Other applications include processing of massive experimental data. The problems associated with the distribution of such arbitrarily divisible loads are usually analysed in the framework of what is known as divisible job theory. The research work reported in this thesis is a contribution in the area of distributing arbitrarily divisible loads in distributed computing systems subject to communication delays. The main objective in this work is to design and analyseload distribution strategies to minimize the processing time of the entire load in a given network. Two types of networks are considered, namely (i) single-level tree (or star) network and (ii) linear network. In both the networks we assume that there is a non-zero delay associated with load transfer. Further, the processors in the network may or may not be equipped with front-ends (Le., communication co-processors). The main contributions in this thesis are summarized below. First, a mathematical formulation of the load distribution problem in single-level tree and linear networks is presented. In both the networks, it is assumed that there are (m +1) processors and m communication links. In the case of single-level tree networks, the load to be processed is assumed to originate at the root processor, which divides the load into (m +1) fractions, keeps its own share of the load for processing, and distributes the rest to the child processors one at a time and in a fixed sequence. In all the earlier studies in the literature, it had been assumed that for a load distribution to be optimal, it should be such that all the processors must stop computing at the same time. In this thesis, it is shown that this assumption is in general not true, and holds only for a restricted class of single-level tree networks which satisfy a certain condition. The concept of an equivalent network is introduced to obtain a precise formulation of this condition in terms of the processor and link speed parameters. It is shown that this condition can be used to identify processor-link pairs which can be eliminated from a given network (i.e., these processors need not be given any computational load) without degrading its time performance. It is proved that the resultant reduced network (a network from which these inefficient processor-link pairs have been removed) gives the optimal time performance if and only if the load distribution is such that all the processors stop computing at the same time instant. These results are first proved for the case when the root processor is equipped with a front-end and then extended to the case when it is not. In the latter case, an additional condition, between the speed of the root processor and the speed of each of the links, to be satisfied by the network is specified. An optimal sequence for applying these conditions is also obtained. In the case of linear networks the processing load is assumed to originate at the processor situated at one end of the network. Each processor in the network keeps its own load fraction for computing and transmits the rest to its successor. Here too, in all the earlier studies in the literature, it has been assumed that for the processing time to be a minimum, the load distribution must be such that all the processors must stop computing at the same instant in time. Though this condition has been proved by others to be both necessary and sufficient, a different and more rigorous proof, similar to the case of single-level tree network, is presented here. Finally, the effect of inaccurate modelling on the processing time and on the above conditions are discussed through an illustrative example and it is shown that the model adopted in this thesis gives reasonably accurate results. In the case of single-level tree networks, so far it has been assumed that the root processor distributes the processing load in a fixed sequence. However, since there are m child processors, a total of m! different sequences of load distribution are possible. Using the closed-form derived for the processing time, it is proved here that the optimal sequence of load distribution follows the decreasing order of link speeds. Further, if physical rearrangement of processors and links is allowed, then it is shown that the optimal arrangement follows a decreasing order of link and processor speeds with the fastest processor at the root. The entire analysis is first done for the case when the root processor is equipped with a front-end, and then extended to the case when it is not. In the without front-end case, it is shown that the same optimal sequencing result holds. However, in an optimal arrangement, the root processor need not be the fastest. In this case an algorithm has been proposed for obtaining optimal arrangement. Illustrative examples are given for all the cases considered. Next, a new strategy of load distribution is proposed by which the processing time obtained in earlier studies can be further minimized. Here the load is distributed by the root processor to a child processor in more than one installment (instead of in a single installment) such that the processing time is further minimized. First; the case in which all the processors are equipped :tn front-ends is considered. Recursive equations are obtained for a heterogeneous network and these are solved for the special case of a homogeneous network (having identical processors and identical links). Using this closed-form solution, the ultimate limits of performance are explored through an asymptotic analysis with respect to the number of installments and number of processors in the network. Trade-off relationships between the number of installments and the number of processors in the network are also presented. These results are then extended to the case when the processors are not equipped with front-ends. Finally, the efficiency of this new strategy of load distribution is demonstrated by comparing it with the existing single-installment strategy in the literature. The multi-installment strategy explained above is then applied to linear net-As. Here, .the processing load is assumed to originate at one extreme end of the network, First the case when all the processors are equipped with front-ends is considered. Recursive equations for a heterogeneous network are obtained and these are solved for the special case of a homogeneous network. Using this closed form solution, an asymptotic analysis is performed with respect to the number of installments. However, the asymptotic results with respect to the number of processors was obtained computationally since analytical results could not be obtained. It is found that for a given network, once the number of installments is fixed, there is an optimum number of processors to be used in the network, beyond which the time performance degrades. Trade-off relationships between the number of installments and the number of processors is obtained. These results are then extended to the case when the processors are not equipped with front-ends. Comparisions with the existing single-installment strategy is also done. The single-installment strategy discussed in the literature has the disadvantage that the front-ends of the processors are not utilized efficiently in a linear network. This is due to the fact that a processor starts computing its own load fraction only after the entire load to be communicated through its front-end has been received. In this thesis, a new strategy is proposed in which a processor starts computing as soon as it receives its load fraction, simultaneously allowing its front-end to receive and transmit load to its successors. Recursive equations are developed and solved for the special case of a heterogeneous network in which the processors and links are arranged in the decreasing order of speeds. Further, it is shown that in this strategy, if the processing load originates in the interior of the network, the sequence of load distribution should- be such that the load should be first distributed to the side with a lesser number of processors. An expression for the optimal load origination point in the network is derived. A comparative study of this strategy with an earlier strategy is also presented. Finally, it is shown that even though the analysis is carried out for a special case of a heterogeneous network, this load distribution strategy can also be applied to a linear network in which the processors and links are arbitrarily arranged and still obtain a significant improvement in the time performance.

Deciphering the factors underlying both long-term patterns of diversity and taxonomic turnover rates (i.e., extinction, and origination) has been one of Paleobiology's major foci for the past three decades. The importance of documenting these components is that they will expand our ability to interpret and model the evolutionary processes underlying those trends, highlight the evolutionary impact of historical events, and contribute to the formulation of robust predictions about the future of global diversity in response to the current anthropologically driven environmental changes. Accordingly, the first part of this study examines the possible occurrence of global marine evolutionary environmental controls into a `deep-time' perspective, using a statistical time-series approach between the most recent Phanerozoic global marine generic origination rates with coeval mean global marine geochemical and geological signatures of environmental proxies. After this examination, significant positive correlations were found between changes in origination rates and global mean signatures of 87Sr/86Sr and δ34S, as well as a significant negative correlation between variability in both origination rates and eustatic sea level. They suggest that over secular timescales, nutrient availability, as controlled by continental weathering, phosphorus recycling, and the relative extent of shelf exposure, is an important regulator of genus-level origination in the marine realm, with periods of increased nutrient availability associated with higher origination rates.