Multicore processors often increase the performance of applications. However, with their deeper pipelining, they have proven increasingly difficult to improve. In an attempt to deliver enhanced performance at lower power requirements, semiconductor microprocessor manufacturers have progressively utilised chip-multicore processors. Existing research has utilised a very common technique known as thread-level speculation. This technique attempts to compute results before the actual result is known. However, thread-level speculation impacts operation latency, circuit timing, confounds data cache behaviour and code generation in the compiler. We describe an software framework codenamed Lyuba that handles low-level data hazards and automatically recovers the application from data hazards without programmer and speculation intervention for an asymmetric chip-multicore processor. The problem of determining correct execution of multiple threads when data hazards occur on conventional symmetrical chip-multicore processors is a significant and on-going challenge. However, there has been very little focus on the use of asymmetrical (heterogeneous) processors with applications that have complex data dependencies. The purpose of this thesis is to: (i) define the development of a software framework for an asymmetric (heterogeneous) chip-multicore processor; (ii) present an optimal software control of hardware for distributed processing and recovery from violations;(iii) provides performance results of five applications using three datasets. Applications with a small dataset showed an improvement of 17% and a larger dataset showed an improvement of 16% giving overall 11% improvement in performance.

The main objectives of this thesis are to examine and estimate the determinants of domestic investment (public and private) in the Libyan manufacturing sector, and to investigate the impact of domestic investment on the Libyan economy. It adds to the growing literature on the issue of economic growth and econometrics by drawing attention to several issues hitherto little considered in the existing literature. In particular, the thesis blends various aspects of economic growth with models of investment to explain and define the main factors which affect domestic investment, and how domestic investment drives economic growth in the Libyan economy. It is important to recognise that economic growth has become an important aim for all countries in the world; especially less developed countries, which require greater economic efforts to be able to deal with the current international economic climate and the challenges of globalisation: domestic investment is an exemplary element to stimulate economic growth to achieve this target. The main objective of the Libyan government has been the industrialization of Libya, principally through import substitution. Various import restrictions in the form of licensing, quotas and tariffs have provided several sub-sectors of manufacturing with a high level of protection from foreign competition. The government benefits from high levels of financial return in terms of oil revenues, and the consequent easy availability of imported raw materials and capital goods. Despite government support for investment designed to encourage import substitution and export-oriented production, Libya has continued to experience low levels of investment in the domestic manufacturing sector. The stimulus to undertake this study was a desire to explore the most important determinants of fixed investment in Libya's manufacturing sector. This study aims to identify determinants of domestic investment in both the public and private manufacturing sectors in the Libyan economy during the period 1962-2008. Furthermore, this study aimed to identify the impact of domestic investment as a determinant of growth in the Libyan economy during the period 1962-2008. Cobb- Douglas Function was used to analyze the relationship between real per-capita GDP and its most important determinants. Properties of time series of the model variables have been analyzed by using several tests for determining the integration level of each time series separately. By using the Johansen-Juselius cointegration method, the results showed that private investment is strongly and adversely affected in the longer term by changes that take place in domestic public investment in the manufacturing sector, which shows the competition factor between the private and public sectors. The results of these tests revealed an equilibrium relationship between domestic investment in the private manufacturing sector and its determinants in the long and short-run. Also, the results showed the significance of the impact of annual appropriations for the manufacturing sector and imports of machinery & capital goods on domestic investment in the public manufacturing sector, the results of these tests revealed an equilibrium relationship between domestic investment in the public manufacturing sector and its determinants in the long and short-run. Moreover, the results showed the significance of the impact of investment on per-capita GDP; the results of tests revealed an equilibrium relationship between per-capita GDP and its determinants in the long and short-run. The study concludes that the elasticity of per capita GDP to changes in domestic investment is greater than the elasticity of the labour force, which appeared inelastic in the short and long-term. According to the information available, the study and approach adopted have never been undertaken before for Libya, and therefore might contribute toward advancing knowledge and enhancing investment policy, and its implementation by government and private manufacturing enterprises in Libya and other developing countries.

Thesis (MBA)--Stellenbosch University, 2008. / ENGLISH ABSTRACT: Empirical research is done to determine whether trading strategies based on technical analysis can outperform a naive buy-and-hold strategy. A study is made of classical and contemporary academic literature. The central investigation is threefold. Firstly, the degree of randomness of a chosen basket of securities is determined vis-a-vis the Random Walk Hypothesis. Secondly, the effectiveness of stop loss orders is assessed. Lastly, a collection of chosen trading strategies is back-tested on security data ranging over 20 years. Performance of these systems is measured on net average and risk-adjusted gains in the absence of transaction and taxation costs. The finding of this report is that, in the absence of these costs, certain technical trading strategies can indeed outperform a buy-and-hold strategy. Although end-of-day data is used throughout the study, the techniques can also be applied to intra-day trading. / AFRIKAANSE OPSOMMING: Empiriese navorsing is gedoen om te bepaal of handelstrategiee wat op tegniese ontleding gebaseer is, beter kan presteer as 'n klassieke konserwatiewe koop-en-hou-strategie. Omvattende literatuurstudie is gedoen van klassieke en kontemporere literatuur, en die kruks van die navorsing is drieledig. Eerstens word die toevalligheidsgraad van 'n gekose aandelepakket ten opsigte van die hipotese van ewekansigce koersbeweging bepaal. Tweedens word die effektiwiteit van "stop-verlies" opdragte ontleed en laastens word 'n versameling historiese handelstrategiee getoets met die laaste 20 jaar se aandeledata. Die prestasie van die onledingstelsels word gemeet aan die hand van die netto gemiddelde en risiko aangepaste opbrengste met uitsluiting van die transaksie en belasting kostes. Die bevinding van die studie is dat met uitsluiting van die transakie en belasting kostes, die gebruik van tegniese ontledings inderdaad hoer opbrengste lewer as die klassieke koop-en-hou strategie. Alhoewel dag sluitingsdata deurlopend vir die studie gebruik was, kan die tegnieke ook op intradag data toegepas word.

published_or_final_version / Architecture / Master / Master of Science in Construction Project Management

published_or_final_version / Real Estate and Construction / Master / Master of Science in Construction Project Management

published_or_final_version / Real Estate and Construction / Master / Master of Science in Construction Project Management

Multi-core and many-core systems are the norm in contemporary processor technology and are expected to remain so for the foreseeable future. Parallel programming is, thus, here to stay and programmers have to endorse it if they are to exploit such systems for their applications. Programs using parallel programming primitives like PThreads or OpenMP often exploit coarse-grain parallelism, because it offers a good trade-off between programming effort versus performance gain. Some parallel applications show limited or no scaling beyond a number of cores. Given the abundant number of cores expected in future many-cores, several cores would remain idle in such cases while execution performance stagnates. This thesis proposes using cores that do not contribute to performance improvement for running implicit fine-grain speculative threads. In particular, we present a many-core architecture and protocols that allow applications with coarse-grain explicit parallelism to further exploit implicit speculative parallelism within each thread. We show that complementing parallel programs with implicit speculative mechanisms offers significant performance improvements for a large and diverse set of parallel benchmarks. Implicit speculative parallelism frees the programmer from the additional effort to explicitly partition the work into finer and properly synchronized tasks. Our results show that, for a many-core comprising 128 cores supporting implicit speculative parallelism in clusters of 2 or 4 cores, performance improves on top of the highest scalability point by 44% on average for the 4-core cluster and by 31% on average for the 2-core cluster. We also show that this approach often leads to better performance and energy efficiency compared to existing alternatives such as Core Fusion and Turbo Boost. Moreover, we present a dynamic mechanism to choose the number of explicit and implicit threads, which performs within 6% of the static oracle selection of threads. To improve energy efficiency processors allow for Dynamic Voltage and Frequency Scaling (DVFS), which enables changing their performance and power consumption on-the-fly. We evaluate the amenability of the proposed explicit plus implicit threads scheme to traditional power management techniques for multithreaded applications and identify room for improvement. We thus augment prior schemes and introduce a novel multithreaded power management scheme that accounts for implicit threads and aims to minimize the Energy Delay2 product (ED2). Our scheme comprises two components: a “local” component that tries to adapt to the different program phases on a per explicit thread basis, taking into account implicit thread behavior, and a “global” component that augments the local components with information regarding inter-thread synchronization. Experimental results show a reduction of ED2 of 8% compared to having no power management, with an average reduction in power of 15% that comes at a minimal loss of performance of less than 3% on average.

During the past two decades the manufacturing industry has consistently tried to transition from a position as traditional goods supplier to a provider of solutions by means of the integration of goods and services. This integration phenomenon is called servitization. Transition triggers are forces such as economic pressure, gaining competitive advantage and increasing customer demands. In spite of the evident gains identified in the literature, the major part of the industry either advanced hesitantly, or stalled after the first steps. Only a few “hidden champions” succeeded. The status of servitization as an academic field has reached maturity. During the past years, published servitization research papers grew exponentially compared with the early years of this century. The extant literature offers an extraordinarily broad range of researched themes such as servitization avenues, benefits and barriers, bundling, product design, contract models and sales process. What is missing, however, is a conceptualization that focuses on the practical implementation aspects of servitization to guide practitioners to apply servitization sustainably. The findings of my servitization research contribute to knowledge in several ways. They provide a novel understanding about the crucial first step in a traditional product manufacturer’s customer re-orientation. The unique principle of functional arrays facilitates the understanding of the terms “the customer” and “solution”. It permits the identification and collection of specific customer solution requirements by unusual functional disaggregation of entire companies. The creation of customer service demand categories enables a correlation with customers’ functional arrays that consequently leads into the formation of particular service competencies and specific service delivery platforms. For the first time, manufacturers, through these platforms, may proactively address individually and specifically customers’ service demands across the entire customer`s company structure. A final contribution constitutes the conceptualization based on the progression principle of service delivery platforms. The study tackled a business problem through a constructivist research philosophy, employing an inductive approach and adopting a case study strategy. In-depth interviews in real life settings revealed how a traditional product manufacturer should re-orientate its capabilities and progress on a servitization transition.

The research presents a comparative study of Libya and Egypt. Both are developing economies in North Africa, and both have adopted FDI and TT as ways to enhance economic development and economic structure in the countries. The purpose of this study is to investigate the key success factors impacting foreign direct investment (FDI) and technology transfer (TT) from the perspective of governments of the host countries . The investigation applies a questionnaire survey method for primary data collection from firm managers in the two countries. Data were collected from representatives of firms with FDI and TT in Libya and Egypt. The matched samples comprise 149 firms in both Libya and Egypt, so that key economic sectors could be covered in the two countries. This research also uses data collected from secondary sources such as government reports, documents and government websites. The results were strongly impacted by host government policy in the process of FDI and TT. A number of factors were identified as being important in the process of FDI and TT, these factors are divided into two groups: manageable factors such as policy, level of education, skill of labour and so on and unmanageable factors such as availability of natural resources, location and the climate of the host country .The created framework has broad significance and can be applied for the evaluation of the role of FDI and TT in the evolution of the economic structure of a country.

Purpose/objectives: The study considered international Joint Venture projects (‘IJV’) and international acquisitions (for recognition purposes, the term of international Mergers & Acquisitions ‘IM&A’ is used even though mergers are not specifically part of the study) with a focus on automotive suppliers in the passenger car market and regionally on US partners. The objective was to analyse how suppliers in the automotive industry can close their strategic deficiencies through these IJV and IM&A transactions. The regional focus on US partners was chosen, as the USA is a major market for automotive suppliers (volumes/size and innovation-focus). The idea was to identify, categorise, and subsequently analyse decision-making parameters of the engagement in IJV and IM&A. Design/methodology/approach: The research had two main areas: a general literature review and an empirical part with a case study approach. As the research drew on a constructivist perspective, the empirical part of the research was conducted with a qualitative approach. At the centre were three case studies of a major German supplier analysed in depth: one IM&A, one IJV and one ‘hybrid’ transaction. These studies examined good practices, highlights, and challenges through semi-structured interviews. Senior experts in the Business Units and collaboration teams involved in these strategic projects were interviewed. Documentation reviews and the researcher’s own observations flanked these interviews. Findings: Bringing together ideas from the existing literature, and enriching them with insights from projects in the real automotive world, the current study contains valuable considerations about these complex strategic transactions. In order to enhance the deliberate use of these collaborations, the research reflected on the possible alignments of the various parameters and strategic factors. Contributions: The study represents a contribution to the practice and to the academic world, since it is a study to bridge the relevant theory/practice literature with real casestudy- based insights of German-USA inter-firm collaborations in the automotive industry. On that basis, an ‘advisory framework’ was developed to enhance decisionmaking in that area of corporate strategy. It focuses on important factors to consider when engaging in cross-border IJV and IM&A in a specific industry. Research limitations/implications: The research results would need to be further explored in practice, which could be the subject of future research. Limitations from the current study stem from the chosen research design and sample size.