Streamline-based models have shown great potential in reconciling high resolution geologic models to production data. In this work we extend the streamline-based production data integration technique to naturally fractured reservoirs. We use a dualporosity streamline model for fracture flow simulation by treating the fracture and matrix as separate continua that are connected through a transfer function. Next, we analytically compute the sensitivities that define the relationship between the reservoir properties and the production response in fractured reservoirs. Finally, production data integration is carried out via the Generalized Travel Time inversion (GTT). We also apply the streamline-derived sensitivities in conjunction with a dual porosity finite difference simulator to combine the efficiency of the streamline approach with the versatility of the finite difference approach. This significantly broadens the applicability of the streamlinebased approach in terms of incorporating compressibility effects and complex physics. The number of reservoir parameters to be estimated is commonly orders of magnitude larger than the observation data, leading to non-uniqueness and uncertainty in reservoir parameter estimate. Such uncertainty is passed to reservoir response forecast which needs to be quantified in economic and operational risk analysis. In this work we sample parameter uncertainty using a new two-stage Markov Chain Monte Carlo (MCMC) that is very fast and overcomes much of its current limitations. The computational efficiency comes through a substantial increase in the acceptance rate during MCMC by using a fast linearized approximation to the flow simulation and the likelihood function, the critical link between the reservoir model and production data. The Gradual Deformation Method (GDM) provides a useful framework to preserve geologic structure. Current dynamic data integration methods using GDM are inefficient due to the use of numerical sensitivity calculations which limits the method to deforming two or three models at a time. In this work, we derived streamline-based analytical sensitivities for the GDM that can be obtained from a single simulation run for any number of basis models. The new Generalized Travel Time GDM (GTT-GDM) is highly efficient and achieved a performance close to regular GTT inversion while preserving the geologic structure.

Includes bibliographical references (p. 39-48).

Thesis--M.A., University of Hong Kong, 1983.

Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 183-197). Available also in a digital version from Dissertation Abstracts.

Fatigue testing of complete automotive wheels is carried out on rotary bendmachines. These commercial mac hin e s s imulnt e h ar d - c o rn e rin g c o n ditio n s an d mainly testthefatigue performance of the central section of an automotive wheel' . This paper develops a relationship for predicting the fatigue performance of the wheel,based onfatigue tests of hourglass specimens machinedfrom centre discs. This is more economical of material and, in principle, also allows the effect on fatigue performance of change inproduction parameters or starting alloy to be assess ed, by c o n sid e rin g a limit e d numb e r of w h e e I blanks take n from each stage of the production process. This is p ote ntially a v ery u s eful to ol in optimisin g mat e rial selection, wheel design and production parameters. The p arti c ular c e ntr e - dis c un d e r c o n s id e r atio n i s manufactured from a dual-phas e ste eI (DP S)2 . Good c o rr elatio n w as achie v e d b e tw e e n S - lr.' data fr o m th e automotiv e w he els qnd that from the ho urglas s (H G) specimens.

Over the past fifteen years, Manitoba’s aggressive immigration strategy has brought thousands of newcomers to the province, many of whom relocated with spouses and families. The proposed study aims to explore the struggles and successes that immigrant women face when they relocate to Manitoba primarily for their partners’ work opportunities, with the intention of informing education and settlement services for these women. The study adopts gender role theory as the main theoretical framework, exploring assumptions and the impact they might have on the relationships and decision making of couples who immigrate to Manitoba (Mincer, 1978). Data collection techniques include a semi-structured interview and email communication. The findings will illuminate the experiences and perspectives of immigrant women who relocate with their partner or spouse to Manitoba, and may inform the work of educators, policy makers, settlement services, and dual-career consultants who support this population.

The purpose of this study was to explore how Dual Credit (DC) programs at Ontario high schools impacted the persistence of students when they are in college and what specific features of these programs affected the participating students’ academic performance. This study focused on the Dual Credit students enrolled full-time at Sir Sandford Fleming College who successfully completed one full-time semester of academic study. Fleming College is one of the 24 Ontario Colleges of Applied Arts & Technology. This was a case study based on both qualitative and quantitative data collected by a number of methods including survey questionnaires, audio-recorded phone and face-to-face interviews, and document analysis. There were a number of findings related to persistence at College. For example, the DC student group persisted at the same rate as did all College students and DC students who enrolled in a College program that was “related” to their DC program were more likely to persist at college. Although there was no attempt to compare the data for the two groups because of uncontrollable variables, this study found that DC students (as a group) did not achieve academically quite at the same level, as did all Fleming College students. However, considering that the DC target group was “at risk” students, the overall academic achievement (64%) of the DC students (2011) was similar to the academic achievement of all College students (68%). The participants in this study recommended that the DC program be as much like college as possible. This study supports previous research, which indicates that the DC courses should be delivered at the college campus (rather than in the high school) and DC students should be integrated with other college students. Although this was a case study of DC students at only one Ontario College and the findings are not generalizable to other sites, the findings of this study will partially address a gap in the research literature and add to the body of knowledge about the impact of DC programs in the areas of student engagement, integration and persistence with respect to DC programs elsewhere.

The purpose of this study was to explore how Dual Credit (DC) programs at Ontario high schools impacted the persistence of students when they are in college and what specific features of these programs affected the participating students’ academic performance. This study focused on the Dual Credit students enrolled full-time at Sir Sandford Fleming College who successfully completed one full-time semester of academic study. Fleming College is one of the 24 Ontario Colleges of Applied Arts & Technology. This was a case study based on both qualitative and quantitative data collected by a number of methods including survey questionnaires, audio-recorded phone and face-to-face interviews, and document analysis. There were a number of findings related to persistence at College. For example, the DC student group persisted at the same rate as did all College students and DC students who enrolled in a College program that was “related” to their DC program were more likely to persist at college. Although there was no attempt to compare the data for the two groups because of uncontrollable variables, this study found that DC students (as a group) did not achieve academically quite at the same level, as did all Fleming College students. However, considering that the DC target group was “at risk” students, the overall academic achievement (64%) of the DC students (2011) was similar to the academic achievement of all College students (68%). The participants in this study recommended that the DC program be as much like college as possible. This study supports previous research, which indicates that the DC courses should be delivered at the college campus (rather than in the high school) and DC students should be integrated with other college students. Although this was a case study of DC students at only one Ontario College and the findings are not generalizable to other sites, the findings of this study will partially address a gap in the research literature and add to the body of knowledge about the impact of DC programs in the areas of student engagement, integration and persistence with respect to DC programs elsewhere.

Analysis of new schemes aimed at improving congestion in communications systems is vital for todays service providers. Many techniques are used to evaluate such schemes be it precisely via mathematics or approximately using simulation. This thesis introduces a new scheme, the multi priority dual queue (MPDQ). The MPDQ is the combination of two concepts, the dual queue introduced by [Hayes et. al., 1999] and prioritised traffic. The MPDQ is a system with finite waiting room with two queues where traffic upon arrival if finding the first queue full wait in the second queue if there is room. When a space becomes vacant in the first queue, a customer at the front of the second queue enters the back of the first, which is the queue that has the service centre at the front of it. The traffic can be of two or more classes. The analysis of such a system is complex, both analytically using queueing theory and approximately using simulation analysis. Both approaches are taken in this thesis. To begin, the new algorithmic approach used for the MPDQ is applied for the single buffer model. The steady state and waiting time distributions are obtained and later compared to the MPDQ. Next the performance characteristics are obtained by solving the steady state and waiting time distributions of a two class MPDQ. Preemptive and non-preemptive service disciplines are investigated. Maple is also used to solve the algorithm. To broaden the application of the MPDQ scheme, computer simulations using Arena are undertaken to extend the application of the scheme (and existing finite queueing models) to situations with more than two priorities, something that is extremely difficult to solve analytically. Using simulation, comparisons are undertaken for the single and dual queue schemes for more than two priorities with a variety of queueing disciplines used including First In First Out (FIFO), Last In First Out (LIFO), High Class First (HCF), and Low Class First (LCF). Network scenarios are also modelled to determine the performance of the MPDQ in this environment.

Thesis (M.A.)--Auburn University, 2008. / Abstract. Includes bibliographical references (p. 65-71).