Made available in DSpace on 2014-06-12T15:57:17Z (GMT). No. of bitstreams: 2 arquivo3161_1.pdf: 1109714 bytes, checksum: 63bb826b538cafab9528cb9cb8274bdc (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Com a adoção pelo mercado dos processadores de nucleos multiplos, o uso de threads em Java se torna cada vez mais proveitoso. O desenvolvimento de sistemas paralelos e, entretanto, uma tarefa que poucos desenvolvedores estão capacitados a enfrentar. Dado esse contexto, foi desenvolvida uma abordagem de paralelizaçaao de programas java baseada em leis de transformação, com o intuito de facilitar esse processo e permitir uma paralelização sistemática. O primeiro passo da abordagem utiliza leis de transformação para converter um programa Java em uma forma normal que utiliza um conjunto restrito de recursos da linguagem. Neste passo, foram definidas leis de transformação adaptadas de trabalhos anteriores, assim como novas leis foram propostas. A partir de um programa na forma normal, são utilizadas regras de transformação focadas em introduzir paralelismo. Após a aplicação dessas regras de acordo com a estretégia desenvolvida, um programa paralelo e produzido. Dois casos de estudo foram realizados para validar a abordagem: calculo de series de Fourier e o algoritmo de criptografia IDEA. Ambos códigos foram obtidos do Java Grande Benchmark Suite. A execução dos estudos de caso comprova o êxito da abordagem em melhorar a performance do cóodigo original

Thesis (MBA)--University of Stellenbosch, 2011. / Metropolitan, like all companies in the insurance sector, would like to limit attrition to ensure that the institutional knowledge is retained. At the time when the employee has already tendered a resignation letter, most companies conduct an exit interview. The researcher feels that at this stage, it is rather late. It is important therefore to understand in advance, the reasons why employees would consider leaving the organisation and put corrective measures in place to prevent that. Retention of key employees is a highly topical subject and an important dilemma that many companies have to deal with. It requires leadership attention and scientific understanding of the causes of attrition. In South Africa, the concept of retention of specifically Black employees has a broader significance in that it contributes to higher BEE scores and opportunities to do business with government for those companies that have such interests. The purpose of this study is to firstly understand the phenomenon of retention as it applies to the Black employees of Metropolitan. Black employees with skills and experience are arguably the most attractive group on the labour market due to the lack of such skills. Because of this, companies are struggling to retain their Black employees. This study explores what Metropolitan should take into account when designing retention measures for Black employees. It asks the Black employees themselves, what they consider as important that would help in retaining them. Furthermore, it will help the company to investigate which characteristics or variables to consider when formulating its retention strategies. The questions that the study endeavours to explore are: What mechanisms should Metropolitan use to retain especially Black employees? If current employees are considering leaving the company, what are the main reasons for wanting to leave or looking for a job elsewhere? What are the characteristics that employees consider most important that would make them want to stay at Metropolitan. The subject matter investigation involved a survey which was sent to Black employees in the company and the results which were analysed. The results shed some understanding on the reasons why employees would consider applying for a job outside of Metropolitan. It gives the company an understanding of how many of its current Black employees are looking for jobs elsewhere. Because of this prior knowledge, the company can intervene and put measures in place to retain those who were already looking to leave the company. The study also details characteristics that Black employees at Metropolitan consider to be important by certain biographical categories like job grade, age, education, gender and experience. The results further build on the existing literature of retention, especially in the South African environment in the era of transformation laws.

Thesis (LLM.) -- University of Limpopo, 2017. / In South Africa, during the then apartheid era, the mining sector had records of extremely high fatalities, injuries and occupational diseases that led to massive death of miners predominantly the Blacks. In the post-apartheid era, numerous laws have been enacted to address the problem. One of the laws that was introduced is the Mine Health and Safety Act 29 of 1996 which provides for radical enforcement of health and safety standards using various mechanisms, such as monitoring systems and inspections, investigations, and employers' and employees' duties to identify hazards and eliminate, control and minimise the risk to health and safety of mine workers. This study examines the extent, efficient and efficacy of the implementation and enforcements of these laws and points out the challenges being encountered and prospects made thus far. The study used Australia and Chile for comparative study and showcased how the government and the laws they have passed are being effectively used to contain and curtail health hazards, accidents and fatalities in the mining environment.

Thesis (M. Dev. (Development and Management Law)) -- University of Limpopo, 2017 / This mini-dissertation deals with the implementation of laws regulating mining industries transformation in South Africa. This mini-dissertation finds that the pace of transformation is very low and the challenges faced in the mining industries which are slowing the process are evaluated. Such challenges include: lack of skills, unqualified candidates and lack of experience. It finds that the Broad-based socio-economic empowerment (BBSEE) introduced 15% target by 2011 where only 8.9% was reached in respect of transformation and that by 2014, 26% must be met where only 17.4% at the top management is achieved. The call for nationalisation of mines as a solution to speed up transformation have also been evaluated and the Mining Qualification Authority category of providing scholarships to maths and science learners to the exclusion of other streams as transformational aspect was also evaluated. The question as to whether 26% of the historically disadvantaged South Africans occupying managerial position is enough to rectify the injustices of the apartheid ills is also looked at. A comparative study was done between South Africa, Canada and Australia to see whether lessons could be learnt. Keywords: Implementation, transformation laws, Historically Disadvantaged South Africans, Mining Qualification Authority, and Mining industry.