Modelling of complex corroding industrial systems is ritical to effective inspection and maintenance for ssurance of system integrity. Wall thickness and corrosion rate are modelled for multiple dependent corroding omponents, given observations of minimum wall thickness per component. At each inspection, partial observations of the system are considered. A Bayes Linear approach is adopted simplifying parameter estimation and avoiding often unrealistic distributional assumptions. Key system variances are modelled, making exchangeability assumptions to facilitate analysis for sparse inspection time-series. A utility based criterion is used to assess quality of inspection design and aid decision making. The model is applied to inspection data from pipework networks on a full-scale offshore platform.

Anomaly detection is a general theory of detecting unusual patterns or events in data. This master thesis investigates the subject of anomaly detection in two different applications. The first application is product inspection using a camera and the second application is surveillance using a 2D laser scanner. The first part of the thesis presents a system for automatic visual defect inspection. The system is based on aligning the images of the product to a common template and doing pixel-wise comparisons. The system is trained using only images of products that are defined as normal, i.e. non-defective products. The visual properties of the inspected products are modelled using three different methods. The performance of the system and the different methods have been evaluated on four different datasets. The second part of the thesis presents a surveillance system based on a single laser range scanner. The system is able to detect certain anomalous events based on the time, position and velocities of individual objects in the scene. The practical usefulness of the system is made plausible by a qualitative evaluation using unlabelled data.

Abstract The quality of a software product depends largely on the quality of the process that is used to develop it. In small software companies, the development process may be informal or even ad hoc, which causes uncertainty and variation in the product quality. However, quality issues are as important in small companies as in their larger counterparts. To sustain their dynamics and competitiveness, small organizations need to concentrate on the most effective quality assurance methods. Software inspection is a proven method for improving product quality and it provides a very cost-effective way for small companies to improve their development processes. This study introduces a framework for adjusting the inspection process for the organization's specific needs and evaluating its capabilities. The main focus of this work, however, is on refining and improving the inspection process. The improvement is guided by concrete instructions that are documented as process patterns. The pattern approach has already been used successfully in several other areas of software engineering. Patterns aim at capturing the best practices of software development and transferring this knowledge between people or organizations. The framework for inspection process capability originates from the literature relating to different types of peer review methods and experiments with flexible and tool-supported inspections in small companies. Furthermore, generic process improvement models are studied to find a feasible structure for the framework. As a result of the analysis, the i3 capability model is introduced. The feasibility of the model has been investigated in real-life software organizations carrying out inspections. After the capability evaluation, the inspection process can be upgraded with the aid of improvement patterns, which provide structured and easy-to-follow guidelines for implementing improvements. An initial list of patterns, describing solutions to the most common problems confronted in the establishment of inspections, is extracted from related inspection research and an industrial experiment. The contributions of this study are, first, the new view of the inspection process, based on the fundamental activities that are performed during an inspection instead of a series of stages, as it is usually presented. An activity-based process description enables tailoring of the process for organization-specific needs and its targeted improvement. Second, the study introduces a practical, lightweight method for implementing the improvement. Patterns are especially suitable in companies where resources are limited and full-scale improvement programmes cannot be initiated. Furthermore, the generic process improvement models do not provide detailed information on how improvements should be carried out, and the pattern approach represents a promising method for that. Third, the inspection process currently does not have a very significant role in generic software process improvement models; this study helps in outlining the importance of inspections. A similar approach could be applied to other software subprocesses to enable their evaluation and improvement.

The aim of this thesis is to deepen the understanding about the function of control in the inspection process and to increase the knowledge about the legitimacy and impact from inspection on different types of social and welfare services. In the thesis the form and legitimacy of the inspection process are studied in two types of social services in Sweden: a less complex service where the task to investigate and make decisions about social care dominates (IAD), and a more complex service where the task to provide treatment interventions dominates (TI). The data consists of policy documents, inspection reports, casefile documentation, and interviews with inspectors, politicians, managers and social workers. The inspection process is discussed in relation to theories about control systems and legitimacy processes. Inspection is a policy instrument whose standards are derived from legislations and where those subject to the inspection are obliged to meet the demands made by the inspectorates. This form of disciplinary control has been questioned given that its complexity makes it hard to regulate the practice of social work through detailed rules. By including a less disciplinary form of control the instrument’s ability to impact on more complex aspects of social services are expected to increase. The results show a difference in how the inspection process is set up in the two types of services. In the IAD services the process takes the form of a disciplinary control system, whereas the process in TI services initially takes the form of a non-disciplinary system. In spite of the differences observed in the initial stages of the process, the results show that the judgments of inspectors in both types of services are almost exclusively based on information about concrete and detailed aspects. This entails that the judgements of inspectors in both types of services mostly take the form of statements on simple observable and concrete conditions, whereas judgments about more complex aspects are rarely made. The study also shows that although the propriety and relevance of the inspectors’ judgements are questioned more in TI organisations inspections seem to have greater validity and impact on TI than on IAD organisations. The results of the thesis point to two explanations. One explanation is that the costs of dealing with the problems underlying the identified deficiencies are lower for TI than IAD organisations. This in turn leads to greater acceptance of carrying out the proposed measures in TI than in IAD organisations. Another possible explanation is that the potential sanctions are greater for TI than IAD organisations.

Audit, inspection and quality assurance are aspects of a broader but rapidly evolving "performance measurement"; which is part of the performance management (PM) in public administration. The effectiveness of PM and its public reporting are not established in all contexts and applications. In some contexts, PM public reporting is used along with other measures such as inter-organisational networks to reform public service provision. In such contexts, how PM reporting help stakeholders in a network? There have been different conceptual frameworks and models explored in the literature that aim to explain how networked governance works. None of the available models, however, addresses the impact of an outside performance measurement tools. The review of literature, on the perspective of inter-organisational network, shows a need to explore more deeply what is going on within the network, and how the network interacts with its boundaries and outside context. Therefore, the overall objective for this research is to propose a conceptual model that can explain the impact of externally reported PM, an example of which is independent mandatory quality assurance (QA), on inter-organisational networks dynamics and outcomes. The research starts by building an ‘initial theoretical conceptual’ model based on theoretically derived influences of PM on the dynamics and outcomes of a network. The research uses qualitative case study strategy, using data from four cases, all linked with national education and training reform initiatives in the Kingdom of Bahrain. Participants representing the four cases were interviewed using semi-structured interview protocol. Data collected were analysed through two-order thematic analyses, and the results were used to revise the initial model and develop a novel conceptual model for this purpose. The results of the analyses contribute to existing theories by proposing four themes, covered by four propositions, in which QA public reporting impacts the network dynamics – namely on accountability, engagement and trust, power and control; and collaborations and cooperation. The impact on the network dynamics may lead to the achievement of some collaborative advantages, after going through the resistance of some collaborative inertias that may exist in the system and context in which network operates. In summary, QA reporting, in the case of this research, is an external variable to the network setting which activates members and offers a medium of change around members, within a network as well as outside it. The researcher introduces the term ‘network catalyst’ to describe the role of QA reporting in this context.

Please read the abstract in the front section of this document / Dissertation (MSc (Chemistry))--University of Pretoria, 2005. / Chemistry / unrestricted

SARS has issued a draft interpretation note dealing with the deductibility of expenditure and losses arising from embezzlement and theft by employees noting that it is not prepared to accept, as a general proposition, that embezzlement and theft by senior managers have become a risk which is inseparable from business. There is however another view that is in direct contradiction with SARS. An analysis of global fraud surveys reveal that senior employee fraud is on the increase. In South Africa, criminal cases against senior employees in the private and public sector indicate that their behaviour can lead to an expectation of theft, fraud or embezzlement at that level of employees. The tests developed by the courts for the deduction of expenditure or losses in terms of the general deduction formula require that such expenditure or loss be attached to the performance of a business operation bona fide performed for the purpose of earning income and will be deductible whether such expenditure or losses are necessary for its performance or attached to it by chance. It is submitted that the increase in fraud and behaviour of senior employees noted in the criminal courts have resulted in a change in the economic environment supporting the contention that theft, fraud or embezzlement are an inherent risk to business in South Africa. In addition, global precedence supports the view that senior employee defalcations are deductible but only to the extent that the perpetrator is not in a proprietor or shareholder role. SARS therefore appears to be turning a blind eye to the risk of theft, fraud or embezzlement by senior employees but there is sufficient evidence to support a taxpayer wishing to claim a deduction for such loss. In light of international precedence, National Treasury should enact legislation allowing a deduction or alternatively, SARS should align its view with such precedence.

Aerospace structural components made from polymer matrix composites (PMCs) offer numerous advantages. Their high stiffness and high strength combined with low densities enable lower fuel consumption coupled with higher payloads. As a result, PMCs provide an important economic advantage over typical metallic airframes. Textile reinforcements for PMCs are made by assembling reinforcement fibres, typically carbon. Then, the textile reinforcements are typically cut into smaller pieces, stacked, draped and assembled into a dry assembly called a preform, the shape of which generally approaches that of the PMC part to be made. This manufacturing process is labour intensive and expensive. Novel thick, net-shape, drapable, high vf textile reinforcements used toward manufacturing aerospace PMCs are being developed at the University of Ottawa. The technology enables the manufacturing of flat, drapable multilayered near net-shape preforms. The bending and in-plane shear behaviours of such novel thick reinforcement textiles was investigated to understand and define the behaviour of such thick fabric reinforcements when formed into required shapes. A bending apparatus was developed for investigating the bending behaviour of these novel thick reinforcement fabrics and an articulated frame shear rig was used for investigating the in-plane shear behaviour. A non-destructive inspection method using infrared imaging was used for investigating and identifying flaws and defects in these thick, dry textile reinforcements, aiming at increasing the quality and reproducibility of the final PMC parts made from these reinforcements.

It goes without saying that cellular users of today have an insatiable appetite for bandwidth and data. Data-intensive applications, such as video on demand, online gaming and video conferencing, have gained prominence. This, coupled with recent innovations in the mobile network such as LTE/4G, poses a unique challenge to network operators in how to extract the most value from their deployments all the while reducing their Total Cost of Operations(TCO). To this end, a number of enhancements have been proposed to the ”conventional” LTE mobile network. Most of these recognize the monolithic and non-elastic nature of the mobile backend and propose complimenting core functionality with concepts borrowed from Software Defined Networking (SDN). In this thesis we shall attempt to explore some existing options within the LTE standard to mitigate large traffic churns. We will then review some SDN-enabled alternatives, and attempt to derive a proof based critique on their merits and drawbacks.

The goal of the Master's Thesis is to identify potential risks that consumers face at the wine market in the Czech Republic. Further, the Master's Thesis aim to find out what are the measures that protect a consumer and to suggest solutions to those areas where the protective measures do not work. The identification is carried out via the analysis of primary and secondary data. Primary data are surveyed by means of consumer research and interviews with experts. At the end of the Master's Thesis the results are summarized and the improving arrangements are put forward.