identifier: Lambert, Karl A. <https://research.library.mun.ca/view/creator_az/Lambert=3AKarl_A=2E=3A=3A.html>   (2016) Generalized asset integrity games.  Masters thesis, Memorial University of Newfoundland.

title: Generalized asset integrity games

abstract:
Generalized assets represent a class of multi-scale adaptive state-transition systems with domain-oblivious performance criteria. The governance of such assets must proceed without exact specifications, objectives, or constraints. Decision making must rapidly scale in the presence of uncertainty, complexity, and intelligent adversaries.
This thesis formulates an architecture for generalized asset planning. Assets are modelled as dynamical graph structures which admit topological performance indicators, such as dependability, resilience, and efficiency. These metrics are used to construct robust model configurations. A normalized compression distance (NCD) is computed between a given active/live asset model and a reference configuration to produce an integrity score. The utility derived from the asset is monotonically proportional to this integrity score, which represents the proximity to ideal conditions. The present work considers the situation between an asset manager and an intelligent adversary, who act within a stochastic environment to control the integrity state of the asset. A generalized asset integrity game engine (GAIGE) is developed, which implements anytime algorithms to solve a stochastically perturbed two-player zero-sum game. The resulting planning strategies seek to stabilize deviations from minimax trajectories of the integrity score.
Results demonstrate the performance and scalability of the GAIGE. This approach represents a first-step towards domain-oblivious architectures for complex asset governance and anytime planning.


identifier: Carreón-Palau, Laura <https://research.library.mun.ca/view/creator_az/Carre=F3n-Palau=3ALaura=3A=3A.html>   (2015) Organic carbon sources and their transfer in a gulf of Mexico coral reef ecosystem.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

type: Thesis NonPeerReviewed

abstract: Coral reefs face unprecedented threats throughout most of their range. Poorly planned coastal development has contributed increased nutrients and sewage contamination to coastal waters, smothering some corals and contributing to overgrowth by macroalgae. My approach to assessing the degree to which coral reef ecosystems have been influenced by terrestrial and anthropogenic organic carbon inputs is through the use of carbon (C) and nitrogen (N) stable isotopes and lipid biomarkers in a marine protected area, the Coral Reef System of Veracruz: Parque Nacional Sistema Arrecifal Veracruzano (PNSAV) in the southwest Gulf of Mexico. Firstly, I used a C and N stable isotope mixing model and a calculated fatty acid (FA) retention factor to reveal the primary producer sources that fuel the coral reef food web. Secondly, I used lipid classes, FA and sterol biomarkers to determine production of terrestrial and marine biogenic material of nutritional quality to pelagic and benthic organisms. Finally, I used coprostanol to determine pollutant loading from sewage in the suspended particulate matter. Results indicate that phytoplankton is the major source of essential metabolite FA for marine fish and that dietary energy from terrestrial sources such as mangroves are transferred to juvenile fish, while seagrass non-essential FA are transferred to the entire food web mainly in the rainy season. Sea urchins may be the main consumers of brown macroalgae, especially in the dry season, while surgeon fish prefer red algae in both dry and rainy seasons. C and N isotopic values and the ratio C:N suggest that fertilizer is the principal source of nitrogen to macroalgae. Thus nitrogen supply also favored phytoplankton and seagrass growth leading to a better nutritional condition and high retention of organic carbon in the food web members during the rainy season when river influence increases. However, the great star coral Montastrea cavernosa nutritional condition decreased significantly in the rainy season. The nearest river to the PNSAV was polluted in the dry season; however, a dilution effect was detected in the rainy season, when some coral reefs were contaminated. In 2013, a new treatment plant started working in the area. I would suggest monitoring δ¹⁵N and the C: N ratio in macroalgae as indicators of the nitrogen input and coprostanol as an indicator of human feces pollution in order to verify the efficiency of the new treatment plant as part of the management program of the PNSAV.


identifier: Garneau, Lindy Erin <https://research.library.mun.ca/view/creator_az/Garneau=3ALindy_Erin=3A=3A.html>   (2016) Transformational learning-environments in the post-secondary classroom: through the experience of indigenous women.  Masters thesis, Memorial University of Newfoundland.

abstract: This study investigated the physical, mental, emotional, and spiritual aspects of transformational learning, including the elements, attributes, factors, and catalysis of the transformational learning environment, as Indigenous women experienced them in the Indigenous Studies 3040H: The Meaning of Work in the Contemporary World (INDG 3040H) course at Trent University. Using a holistic model developed in connection with the Medicine Wheel an Indigenous epistemology is integrated into the study. Qualitative interviews were conducted with eight Indigenous women. The data collected from the interviews indicated that for Indigenous women, the transformational learning environment of the post-secondary classroom is heavily connected to the relationship students develop with themselves, their peers, and the faculty member alongside the content of the course.


identifier: De Oliveira Leis, Mirella <https://research.library.mun.ca/view/creator_az/De_Oliveira_Leis=3AMirella=3A=3A.html>   (2016) Implementation of Marine Protected Areas as a governability challenge in Southern Brazil.  Masters thesis, Memorial University of Newfoundland.

abstract: Marine Protected Areas (MPAs) have been endorsed internationally as a tool promoting marine conservation. MPAs implementation can however be challenging, with many not achieving conservation objectives while creating conflicts with small-scale fishers, often overlooked. This study aims at exploring how MPA implementation can be improved, taking as a case study the Marine National Park of Currais Islands in Southern Brazil. Specifically, this thesis offers a theoretical contribution by applying the interactive governance framework to analyze both the natural and the social systems, focusing on small-scale fishers, governed by the MPA as an institution. The thesis also presents a methodological contribution, as it develops and applies an exploratory mapping approach. We surveyed 65 small-scale fishers from eight communities at Pontal do Paraná municipality, and conducted an exploratory mapping approach in small groups. Main findings point to challenges and opportunities to MPA implementation, and offer a way to involve small-scale fishers in the discussion about MPAs.


identifier: Goodfellow, Monica <https://research.library.mun.ca/view/creator_az/Goodfellow=3AMonica=3A=3A.html>   (2016) Supporting inclusiveness through concepts of gender.  Masters thesis, Memorial University of Newfoundland.

abstract: Some dads wear nail polish! Is the tooth fairy a boy or a girl? My Grade Two students’ voices were integral in developing each of the action research cycles as students became co-creators of knowledge. I gathered data through a personal journal, observations, reflections, work samples, interviews and classroom artifacts. The research question was focused on creating a safe and caring classroom environment by selecting appropriate instructional strategies based on developing my students’ concept of gender. Findings included students’ acceptance of differences, emulation of gender stereotypes, the significance of role models and student empowerment. Conclusions examined the influence that behaviour has on instructional strategies, creating allies among primary students, the importance of teacher training and the influence that students have in their classroom. Thoughts towards future research include the need for further parent engagement and more exploration of the impact that the school environment has in the classroom.


identifier: Abimbola, Majeed Olasunkanmi <https://research.library.mun.ca/view/creator_az/Abimbola=3AMajeed_Olasunkanmi=3A=3A.html>   (2016) Dynamic safety analysis of managed pressure drilling operations.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: The exploration and development of oil and gas reserves located in harsh offshore environments are characterized with high risk. Some of these reserves would be uneconomical if produced using conventional drilling technology due to increased drilling problems and prolonged non-productive time. Seeking new ways to reduce drilling cost and minimize risks has led to the development of Managed Pressure Drilling techniques. Managed pressure drilling methods address the drawbacks of conventional overbalanced and underbalanced drilling techniques. As managed pressure drilling techniques are evolving, there are many unanswered questions related to safety and operating pressure regimes. Quantitative risk assessment techniques are often used to answer these questions. Quantitative risk assessment is conducted for the various stages of drilling operations – drilling ahead, tripping operation, casing and cementing. A diagnostic model for analyzing the rotating control device, the main component of managed pressure drilling techniques, is also studied. The logic concept of Noisy-OR is explored to capture the unique relationship between casing and cementing operations in leading to well integrity failure as well as its usage to model the critical components of constant bottom-hole pressure drilling technique of managed pressure drilling during tripping operation. Relevant safety functions and inherent safety principles are utilized to improve well integrity operations. Loss function modelling approach to enable dynamic consequence analysis is adopted to study blowout risk for real-time decision making. The aggregation of the blowout loss categories, comprising: production, asset, human health, environmental response and reputation losses leads to risk estimation using dynamically determined probability of occurrence. Lastly, various sub-models developed for the stages/sub-operations of drilling operations and the consequence modelling approach are integrated for a holistic risk analysis of drilling operations.


identifier: Clarke, Joseph-Patrick William Edward <https://research.library.mun.ca/view/creator_az/Clarke=3AJoseph-Patrick_William_Edward=3A=3A.html>   (2016) Exploring cellular stress responses: HspB1 and autophagy.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Through an understanding of the innate mechanisms that neurons undertake when they undergo episodes of stress, we can develop effective strategies and treatments that ultimately prevent neuron death and promote neuron survival and neurite growth. In this study, the overall objectives were to investigate how the innate cellular mechanisms of both the heat stress response and autophagy promote survival in neurons during episodes of cell stress.
Chapter 2 focuses upon the interaction dynamics between heat shock protein B1 (HspB1) and filamentous actin (F-actin) in stressed cells. This study demonstrates that under non-stressed conditions HspB1 interacts with F-actin as a non-phosphorylated protein, but after heat stress, both phosphorylated and non-phosphorylated forms of HspB1 interact with F-actin. Furthermore, by inhibiting HspB1 phosphorylation during heat stress, there is attenuation in the interaction between phosphorylated HspB1 and F-actin. This study was the first to show the interaction differences between the phosphorylated and non-phosphorylated forms of HspB1 with F-actin using an endogenous HspB1 expressing model.
Chapter 3 explores the interaction between HspB1 and death-associated protein 6 (Daxx) in dorsal root ganglion (DRG) neurons, and how this interaction could influence autophagic activity. This study demonstrates that high glucose cell stress in DRG neurons affects the mRNA expression and the cellular localization of Daxx, HspB1 and B-cell lymphoma 2 protein (Bcl-2). Subsequent changes in autophagic activity associated with the changes found in Daxx, HspB1 or Bcl-2 expression, however, were not detected. Overall, the experimental results observed in this study can be used as a basis for further research into this topic. Chapter 4, 5 and 6 focus on how the process of autophagy affects DRG neuron survival and neurite growth. These studies demonstrate that adult rat DRG neurons activate autophagy when exposed to the stressful conditions of nutrient starvation and hydrogen peroxide. Furthermore, treatment with 3-methyladenine (3-MA) inhibits both endogenous and stress activated autophagy, while treatment with rapamycin does not further activate autophagy past levels obtained by stressful conditions. Additionally, inhibition of autophagy with 3-MA resulted in a reduction in cell survival, neurite growth, branching and initiation from the cell soma. Overall, these results suggest that autophagic activity plays a significant role in DRG survival and neurite growth.


identifier: Watton, Eric Carl <https://research.library.mun.ca/view/creator_az/Watton=3AEric_Carl=3A=3A.html>   (2016) Coastal geomorphology, processes and erosion at the tourist destination of Ferryland, Newfoundland and Labrador.  Masters thesis, Memorial University of Newfoundland.

abstract: The community of Ferryland is located on the southeastern coast of the Avalon Peninsula. The town traditionally relied on a fishing-based economy until the collapse of the fishery in the early 1990s. The present economy emphasizes sustainable development in the tourism sector with focus on archaeology, geotourism and other recreational uses. This paper discusses coastal erosion and impacts on sites and infrastructure using methods including: local knowledge, Real Time Kinematic (RTK) surveying and other survey techniques, seawater level measurement, meteorological data from a locally-installed station, custom-made drifter tube buoys, photography, HD video, and investigation using various modes of transport including inflatable boat. The major findings of the study include that the residents and stakeholders are genuinely interested in and knowledgeable of coastal erosion. The causes of coastal erosion include: large waves, surge, longshore currents, harbour oscillations, mass wasting, and location of infrastructure causing alterations of these processes. Freeze-thaw Cycles (FTC), rainfall, and gravity loosen and transport rock, till, and fill materials downslope. Large waves and currents transport the materials alongshore or into the nearshore. Harbour oscillations causing high velocity currents (> 2 m/s) are responsible for shoreline erosion and damage to property in The Pool. Historical resources such as gun batteries and ordnance pieces which date to the 1700s are being lost or threatened through coastal erosion of till and rock cliffs. Improper drainage and maintenance is responsible for erosion of roads and supporting shoulders, necessitating mitigation measures. Sediment transport and deposition during and after large wave and surge events lead to undercutting of infrastructure and increased risk of washover of existing infrastructure. Erosion is ongoing at Bois Island and Ferryland Head Isthmus through slope processes and undercutting; The Pool and the lower Colony of Avalon site through harbour oscillations and related undermining; the tombolo and the main breakwater through wave attack; and Meade’s Cove including the East Coast Trail through wave attack and undercutting. The floor of the latrine in the lower Colony of Avalon site indicates that sea level was approximately 1.25m below present in the 1620s, a relative sea level rise rate of 3.2 mm/y. The recommendations include suggested mitigation to reduce impacts specific to each site.


identifier: Talukdar, Poly <https://research.library.mun.ca/view/creator_az/Talukdar=3APoly=3A=3A.html>   (2016) Characterization of FBXO9 in Drosophila melanogaster.  Masters thesis, Memorial University of Newfoundland.

abstract: The study of disease in model organisms is a fundamental and important stepping-stone in understanding and uncovering the mechanisms behind disease pathology in humans. The purpose of this work was to identify potential targets for the treatment and prevention of Parkinson disease using Drosophila melanogaster. Commonly known as the fruit fly, D. melanogaster is one of the important model organisms used extensively in biological research. Moreover, it has conserved developmental processes and mechanisms shared with human neurodegenerative disorders. Parkinson disease (PD) is a progressive neurodegenerative disorder characterized by death of dopamine producing cells of the substantia nigra affects about 1% of people over 60 years old worldwide. In mammals, Fbxo9 is a substrate recognition component of the SCF (SKP1-cullin-Fbox)-type E3 ubiquitin ligase complex. Some targets of Fbxo9, including an extensive array of proteins, are degraded via the ubiquitin-proteasome system. In this study, a potential D. melanogaster homologue of Fbxo9, CG5961, was identified. The Fbxo9 homologue in D. melanogaster has been conserved through evolution and retains many of the functional domains. The main goal of this project was to determine if Fbxo9 can be implicated in modeling PD in D. melanogaster. To investigate its role in neuronal survival, I over-expressed and down-regulated Fbxo9 in neuron-rich eye and dopaminergic neurons. Through assessments of eye morphology, climbing ability and ageing analysis, it was found that loss-of-function of Fbxo9 causes a PD like symptom. I expect that the knowledge obtained by determining the pathways involved in PD in D. melanogaster will help uncover potential new therapeutic approaches for research in human as well as other genes in both humans and flies.


identifier: Pierson, Rosanna <https://research.library.mun.ca/view/creator_az/Pierson=3ARosanna=3A=3A.html>   (2016) The current state of /L/ allophony in St. John's English.  Masters thesis, Memorial University of Newfoundland.

abstract:
This project examines the use and evaluation of light post-vocalic /l/ in St. John's, Newfoundland.
The city, which was primarily settled by the Irish, traditionally did not conform to the Standard
Canadian pattern of /l/ allophony. That is, it was reported to have light /l/ in all positions, in
contrast to Canadian English, which has dark /l/ in codas and light /l/ in onsets (Clarke 2012).
There have been, however, several major social and economic changes in Newfoundland since
the mid-twentieth century, which have impacted local dialects (Clarke 2010). In terms of postvocalic
/l/, data collected by Clarke in St. John's in the 1980s shows that the light variant is
declining in use and being replaced by the dark variant, and that little overt awareness is
accompanying this change (2012). This study addresses the decline and awareness of this feature,
through production and perception experiments, respectively. This work follows that of Clarke in
that it looks at younger age groups that have been born since Clarke's study was conducted in the
early 1980s.
The results of these experiments suggest that the light post-vocalic /l/ has continued its
decline in St. John's English, and that the dark variant is a stable norm. In fact, it is light /l/ in
initial position that is experiencing social variation, in that younger speakers are using darker /l/s
in this position than their older counterparts. Women, though they display a more standard /l/
allophony pattern overall than men, also show more dramatic initial-/l/ darkening in apparent
time. Additionally, there is a significant style shift between word list and interview tasks in this
position. The perception experiment shows that there is awareness and stigma associated with the
light variant in coda, which could extend to light /l/s in general.


identifier: Sopper, Regina <https://research.library.mun.ca/view/creator_az/Sopper=3ARegina=3A=3A.html>   (2016) Experimental investigation of water, snow and granular ice effects on ice failure processes and impact loads.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
A large series of laboratory ice crushing experiments was performed to investigate the effects of external boundary condition and indenter contact geometry on ice load magnitude under crushing conditions. Four boundary conditions were considered: dry cases, submerged cases, and cases with the presence of snow and granular ice material on the indenter surface. Indenter geometries were a flat plate, wedge shaped indenter, (reverse) conical indenter, and spherical indenter. These were impacted with artificially produced ice specimens of conical shape with 20° and 30° cone angles. All indenter – ice combinations were tested in dry and submerged environments at 1 mm/s and 100 mm/s indentation rates. Additional tests with the flat indentation plate were conducted at 10 mm/s impact velocity and a subset of scenarios with snow and granular ice material was evaluated.
The tests were performed using a material testing system (MTS) machine located inside a cold room at an ambient temperature of - 7°C. Data acquisition comprised time, vertical force, and displacement. In several tests with the flat plate and wedge shaped indenter, supplementary information on local pressure patterns and contact area were obtained using tactile pressure sensors. All tests were recorded with a high speed video camera and still photos were taken before and after each test. Thin sections were taken of some specimens as well.
Ice loads were found to strongly depend on contact condition, interrelated with pre-existing confinement and indentation rate. Submergence yielded higher forces, especially at the high indentation rate. This was very evident for the flat indentation plate and spherical indenter, and with restrictions for the wedge shaped indenter. No indication was found for the conical indenter. For the conical indenter it was concluded that the structural restriction due to the indenter geometry was dominating. The working surface for the water to act was not sufficient to influence the failure processes and associated ice loads. The presence of snow and granular ice significantly increased the forces at the low indentation rate (with the flat indentation plate) that were higher compared to submerged cases and far above the dry contact condition.
Contact area measurements revealed a correlation of higher forces with a concurrent increase in actual contact area that depended on the respective boundary condition. In submergence, ice debris constitution was changed; ice extrusion, as well as crack development and propagation were impeded. Snow and granular ice seemed to provide additional material sources for establishing larger contact areas. The dry contact condition generally had the smallest real contact area, as well as the lowest forces. The comparison of nominal and measured contact areas revealed distinct deviations. The incorporation of those differences in contact process pressures-area relationships indicated that the overall process pressure was not substantially affected by the increased loads.


identifier: McCully, Susan Catherine <https://research.library.mun.ca/view/creator_az/McCully=3ASusan_Catherine=3A=3A.html>   (2016) The process of implementing a new baby-friendly hospital initiative for nurses: a grounded theory study.  Masters thesis, Memorial University of Newfoundland.

abstract:
Maternity nursing practice is changing across Canada with the movement toward becoming “baby friendly.” The World Health Organization (WHO) recommends the Baby-Friendly Hospital Initiative (BFHI) as a standard of care in hospitals worldwide. Very little research has been conducted with nurses to explore the impact of the initiative on nursing practice. The purpose of this study, therefore, was to examine the process of implementing the BFHI for nurses. The study was carried out using Corbin and Strauss’s method of grounded theory. Theoretical sampling was employed, which resulted in recruiting and interviewing 13 registered nurses whose area of employment included neonatal intensive care, postpartum, and labour and delivery.
The data analysis revealed a central category of resisting the BFHI. All of the nurses disagreed with some of the 10 steps to becoming a baby-friendly hospital as outlined by the WHO. Participants questioned the science and safety of aspects of the BFHI. Also, participants indicated that the implementation of this program did not substantially change their nursing practice. They empathized with new mothers and anticipated being collectively reprimanded by management should they not follow the initiative. Five conditions influenced their responses to the initiative, which were (a) an awareness of a pro-breastfeeding culture, (b) imposition of the BFHI, (c) knowledge of the health benefits of breastfeeding, (d) experiential knowledge of infant feeding, and (e) the belief in the autonomy of mothers to decide about infant feeding. The identified outcomes were moral distress and division between nurses. The study findings could guide decision making concerning the implementation of the BFHI.


identifier: Small, Lawrence George <https://research.library.mun.ca/view/creator_az/Small=3ALawrence_George=3A=3A.html>   (1971) Patterns in personal experience narratives: storytelling at cod harbour - a Newfoundland fishing community.  Masters thesis, Memorial University of Newfoundland.

abstract:
This study is concerned with storytelling as a
part of the folk culture of a fishing community on the
north east coast of Newfoundland. The study is based on
field work done in the community throughout the summer of
1969 during which I tape recorded oral narratives along
with other folklore and folklife material . The principal
genre discussed is the personal experience narrative which
is an account of the experiences of either the narrator,
someone in his kin network, orhis friends.
It was found that a large number of community
residents communicate in narrative form and that the
narratives function to substantiate conversation preceeding
the narrativei have a didactic function; function as
a means of entertainment~ and reflect the narrators' and
the community's value system.
The methods employed in collecting the material
were the directive and the non-directive interview
techniques and participant observation. Collecting was
done mainly among fishermen between fifty and eighty years
of age and who, on -the average, had not gone beyond the
sixth grade in school.
Since the narratives are so much a part of the environment, I give an account of the community culture.
The principal things that I deal with are the community's
history, economy, education, religion, and social life
which includes rites of passage, calendar customs , social
events, visiting patterns, and gossip. Information in
each of these categories is based primarily on oral
reports, narratives and documented materials.
After a discussion of the storytelling process in
the community, I deal specifically with four male
narrators. For each I give biographical information,
discuss his repertoire, telling situations, style, and
give a sampling of his narratives. The fourth narrator
is discussed in more detail than the first three. The
narratives of the latter comprise the final chapter in the
study, and have been analyzed to show what they tell us
about the narrator's style, his value system, and the
community culture.


identifier: Maftei, Mark <https://research.library.mun.ca/view/creator_az/Maftei=3AMark=3A=3A.html>   (2014) The Ross's Gull (Rhodostethia rosea) in North America.  Masters thesis, Memorial University of Newfoundland.

abstract:
The population, distribution and range of the Ross's gull in North America remain poorly understood, as does almost every aspect of its ecology and biology. It breeds at a few disparate locations in the Canadian Arctic and is an annual fall migrant in northern Alaska where tens of thousands occur in the nearshore waters of the Beaufort and Chukchi Seas, but little else is known about the distribution, habitat requirements, migratory routes and wintering areas used by this species.
In order to clarify the status of the Ross's gull in North America I sought to discover new breeding sites in the Canadian High Arctic in order to characterize nesting habitat requirements, develop a predictive model with which to identify suitable nesting habitat for Ross's gulls, and refresh outdated estimates of the number of individuals migrating past Point Barrow, Alaska. Taken together, my findings provide a comprehensive account of the current status of the Ross's gull in North America.


identifier: Biswas, Aparna <https://research.library.mun.ca/view/creator_az/Biswas=3AAparna=3A=3A.html>   (2016) Use of active power filter to reduce the effects of harmonics in solid oxide fuel cells.  Masters thesis, Memorial University of Newfoundland.

abstract:
The Solid Oxide Fuel Cell (SOFC) is a class of fuel cells that is capable of generating very high levels of power at high temperatures. SOFCs are used for stationary power generation and as Combined Heat and Power (CHP) systems. In spite of all the beneficial features of the SOFC, the propagation of ripple currents, due to nonlinear loads, is a challenging problem, as it interferes with the physical operation of the fuel cell.
The purpose of this thesis is to identify the cause of ripples and attempt to eliminate or reduce the ripple propagation through the use of Active Power Filters (APF). To this end, a systematic approach to modeling the fuel cell to account for its nonlinear behavior in the presence of current ripples is presented. A model of a small fuel cell power system which consists of a fuel cell, a DC-DC converter, a single-phase inverter and a nonlinear load is developed in MATLAB/Simulink environment. The extent of ripple propagation, due to variations in load magnitude and frequency, are identified using frequency spectrum analysis. In order to reduce the effects of ripple propagation, an APF is modeled to remove ripples from the DC fuel cell current. The emphasis of this thesis is based on the idea that small fuel cell systems cannot implement large passive filters to cancel the effects of ripple propagation and hence, the compact APF topology effectively protects the fuel cell from propagating ripples and improves its electrical performance.


identifier: Yin, Cheng <https://research.library.mun.ca/view/creator_az/Yin=3ACheng=3A=3A.html>   (2016) Design of reconfigurable planar parallel robot.  Masters thesis, Memorial University of Newfoundland.

abstract:
A 3-RPR planar parallel robot is a kind of planar mechanism; three prismatic actuators connected with the end effector in parallel.
This thesis will begin with the kinematic analysis for the manipulator to determinate the optimized dimension of the manipulator, including the workspace analysis, determinate of Jacobian analysis, and Direction Selective Index (DSI) analysis.
Secondly, a multi-body bond graph system will be built for the 3-RPR planar parallel manipulator (PPM), along with three PID controllers, which give commands to three DC motors respectively. The advantage of bond graphs is that they can integrate different types of dynamics systems. The manipulator, the control and the motor can be modelled and simulated altogether in the same process. The bond graph will be established for each rigid body with body-fixed coordinate’s reference frames, which are connected with parasitic elements (damping and compliance) to each other. Furthermore, Virtual Work method will be used to evaluate the previous dynamic analysis result.
Eventually, the Solidworks design will be demonstrated with images, which show the overall appearance and a detailed drawing of this project. After the mechanical design of the manipulator is finished, the controller design is considered as a future work to conduct.


identifier: Kean, Kelly <https://research.library.mun.ca/view/creator_az/Kean=3AKelly=3A=3A.html>   (2016) The transition experience for registered nurses new to case management in the community.  Masters thesis, Memorial University of Newfoundland.

abstract: Case management is increasingly being used within today‟s healthcare system in an effort to reduce healthcare costs while meeting the complex needs of populations within the community. Registered nurses (RNs) are often recruited for the role of case managers in the community because of their specific skill set and ability to navigate the healthcare system. There is a vast amount of literature related to the client and system benefits of case management, the roles and responsibilities of RN case managers, and job satisfaction among RN case managers. However, there is a literature gap noted in relation to the transition experience for RNs new to case management in the community setting. This research study used grounded theory methodology, guided by Glaser and Strauss (1967) to explore the process of RNs transitioning to case management in the community setting. Eleven RNs new to case management in the community were interviewed using semi-structured interviews. Data analysis was carried out using the constant comparative method. Three stages of adjusting to case management in the community were identified: slugging it out, seeing the job as it is, and finding the way. By gaining an understanding of this transition experience, recommendations for nursing practice and administration, education, and research that are based on the evidence from this study can be implemented to improve the transition experience for RNs new to case management in the community setting


identifier: Aref-Eshghi, Erfan <https://research.library.mun.ca/view/creator_az/Aref-Eshghi=3AErfan=3A=3A.html>   (2016) Understanding the role of transforming growth factor beta signalling and epigenomics in osteoarthritis.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Osteoarthritis (OA) is the most common form of arthritis with a high socioeconomic burden, with an incompletely understood etiology. Evidence suggests a role for the transforming growth factor beta (TGF-ß) signalling pathway and epigenomics in OA. The aim of this thesis was to understand the involvement of the TGF-ß pathway in OA and to determine the DNA methylation patterns of OA-affected cartilage as compared to the OA-free cartilage.
First, I found that a common SNP in the BMP2 gene, a ligand in the Bone morphogenetic protein (BMP) subunit of TGF-ß pathway, was associated with OA in the Newfoundland population. I also showed a genetic association between SMAD3 - a signal transducer in the TGF-ß subunit of the TGF-ß signalling pathway - and the total radiographic burden of OA. I further demonstrated that SMAD3 is over-expressed in OA cartilage, suggesting an over activation of the TGF-ß signalling in OA. Next, I examined the connection of these genes in the regulation of matrix metallopeptidase 13 (MMP13) - an enzyme known to destroy extracellular matrix in OA cartilage - in the context of the TGF-ß signalling. The analyses showed that TGF-ß, MMP13, and SMAD3 were overexpressed in OA cartilage, whereas the expression of BMP2 was significantly reduced. The expression of TGF-ß was positively correlated with that of SMAD3 and MMP13, suggesting that TGF-ß signalling is involved in up-regulation of MMP13. This regulation, however, appears not to be controlled by SMAD3 signals, possibly due to the involvement of collateral signalling, and to be suppressed by BMP regulation in healthy cartilage, whose levels were reduced in end-stage OA.
In a genome-wide DNA methylation analysis, I reported CpG sites differentially methylated in OA and showed that the cartilage methylome has a potential to distinguish between OA-affected and non-OA cartilage. Functional clustering analysis of the genes harbouring differentially methylated loci revealed that they are enriched in the skeletal system morphogenesis pathway, which could be a potential candidate for further OA studies. Overall, the findings from the present thesis provide evidence that the TGF-ß signalling pathway is associated with the development of OA, and epigenomics might be involved as a potential mechanism in OA.


identifier: Colpron, Emile Gregory <https://research.library.mun.ca/view/creator_az/Colpron=3AEmile_Gregory=3A=3A.html>   (2016) Determining deep-sea coral distributions in the northern Gulf of St. Lawrence using bycatch records and local ecological knowledge (LEK).  Masters thesis, Memorial University of Newfoundland.

abstract: Deep-sea corals have recently received attention due to an increased awareness of their diversity and vulnerability to commercial fisheries. Over 50 species of coral have been identified in Atlantic Canada and the distribution of these species is now fairly well known. However, the deep-sea corals in the Northern Gulf of St. Lawrence have not been previously studied. This study used DFO groundfish survey trawl and fisheries observer records of coral bycatch along with the local ecological knowledge (LEK) of fish harvesters to identify 11 species/groups of deep-sea coral that occur in the Northern Gulf of St. Lawrence (4RSPn) and to map the distribution of seven of these species/groups. Nephtheid soft corals and sea pens (Pennatulacea) are the most common groups occurring in the Northern Gulf. Fish harvester observations on deep-sea coral distributions and coral bycatch in Northern Gulf fisheries are reported along with their opinions on the impacts of different gear types and on protecting corals in the Northern Gulf. Fish harvesters reported that coral bycatch was observed when fishing for eight different target species while using six different gear types and most reported observing a relationship between sea pens and commercial fish species in the Northern Gulf including Atlantic cod (Gadus morhua), Atlantic halibut (Hippoglossus hippoglossus), Greenland halibut/turbot (Reinhardtius hippoglossoides) and Northern shrimp (Pandalus borealis). Fish harvesters’ LEK identified a greater diversity corals than the other two sources of data used, which is likely due to fishing in a wider range of habitats than survey trawls and the longer time periods of observation accessed through fish harvesters’ LEK. There were advantages to using multiple sources of data given the current gaps in our knowledge of deep-sea corals in the Northern Gulf. Each source of data had its own limitations, which are discussed in this thesis, but when used together it was possible to determine deep-sea distribution patterns in the Northern Gulf and to gain insight into the occurrence of deep-sea coral bycatch in Northern Gulf fisheries.


identifier: Mohagheghian, Erfan <https://research.library.mun.ca/view/creator_az/Mohagheghian=3AErfan=3A=3A.html>   (2016) An application of evolutionary algorithms for WAG optimisation in the Norne Field.  Masters thesis, Memorial University of Newfoundland.

abstract: Water-alternating-gas (WAG) is an enhanced oil recovery method combining the improved macroscopic sweep of water flooding with the improved microscopic displacement of gas injection. The optimal design of the WAG parameters is usually based on numerical reservoir simulation via trial and error, limited by the reservoir engineer’s availability. Employing optimisation techniques can guide the simulation runs and reduce the number of function evaluations. In this study, robust evolutionary algorithms are utilized to optimise hydrocarbon WAG performance in the E-segment of the Norne field. The first objective function is selected to be the net present value (NPV) and two global semi-random search strategies, a genetic algorithm (GA) and particle swarm optimisation (PSO) are tested on different case studies with different numbers of controlling variables which are sampled from the set of water and gas injection rates, bottom-hole pressures of the oil production wells, cycle ratio, cycle time, the composition of the injected hydrocarbon gas (miscible/immiscible WAG) and the total WAG period. In progressive experiments, the number of decision-making variables is increased, increasing the problem complexity while potentially improving the efficacy of the WAG process. The second objective function is selected to be the incremental recovery factor (IRF) within a fixed total WAG simulation time and it is optimised using the same optimisation algorithms. The results from the two optimisation techniques are analyzed and their performance, convergence speed and the quality of the optimal solutions found by the algorithms in multiple trials are compared for each experiment. The distinctions between the optimal WAG parameters resulting from NPV and oil recovery optimisation are also examined. This is the first known work optimising over this complete set of WAG variables. The first use of PSO to optimise a WAG project at the field scale is also illustrated. Compared to the reference cases, the best overall values of the objective functions found by GA and PSO were 13.8% and 14.2% higher, respectively, if NPV is optimised over all the above variables, and 14.2% and 16.2% higher, respectively, if IRF is optimised.


identifier: Wallack, Elizabeth M. <https://research.library.mun.ca/view/creator_az/Wallack=3AElizabeth_M=2E=3A=3A.html>   (2016) The first time delivery of the first link learning series using Skype and YouTube.  Masters thesis, Memorial University of Newfoundland.

abstract:
Introduction: This case study documented the experiences of informal and service providers who participated in the first time delivery of the First Link Learning Series from May–August 2013 in Newfoundland and Labrador. The aim of this study was to understand how informal caregivers of people with dementia experience this Internet mediated health resource, and how Skype and YouTube can be used as tools for the Alzheimer Society of Newfoundland and Labrador to effectively deliver the First Link Learning Series. Methods: Sources of data included key informant interviews (n=3), pre-
study and post-study interviews with informal dementia caregivers (n=2), institutional documentation, field notes, and YouTube analytics. Framework Analysis was used to make meaning of the qualitative data, and descriptive statistics were used to report on quantitative outcomes. Findings: Between 3% and 17% of registered First Link clients
attended the learning series sessions, however only two caregivers participated using Skype or YouTube. Framework Analysis revealed three shared themes: access, connection and privacy. Discussion: The themes helped to begin building theory about barriers and facilitators to Internet mediated health resources for informal dementia caregivers. Experiences of service providers using the Internet to support clients served to
begin building a case for the appropriateness of these media. A modified version of Dansky et al.’s (2006) theoretical framework for evaluating E-Health research that situates the person/user in the model, helped guide discussion and propose future directions for the study of Internet based health resources for informal dementia caregivers.


identifier: Deal, Rachel Susan Grace <https://research.library.mun.ca/view/creator_az/Deal=3ARachel_Susan_Grace=3A=3A.html>   (2016) Performing "Up The Shore": a stylistic analysis of Newfoundland Irish English vowels in the Ferryland dinner theatre.  Masters thesis, Memorial University of Newfoundland.

abstract:
This study is a variationist sociolinguistic analysis of two speech styles, performance and
interview, of a dinner theatre troupe in Ferryland on the Southern Shore of
Newfoundland. Five actors and ten of their characters are analyzed to test if their vowels
change across styles. The study adopts a variationist framework with a Community of
Practice model, drawing on Bell’s audience and referee design to argue that the
performers’ stage conventions and identity construction are influenced by a third person
referee: the Idealized Authentic Newfoundlander (IAN). Under this view the goal of the
performer is to both communicate with and entertain the audience, which requires
different tactics when speaking. These tactics manifest phonetically and are discussed in a
quantitative, statistical analysis of the acoustic measurements of the vowel tokens
[variables FACE, KIT, LOT/PALM and GOAT lexical sets with Newfoundland Irish English
(NIE) variants] and a qualitative discussion.


identifier: Hamilton, Christopher B. <https://research.library.mun.ca/view/creator_az/Hamilton=3AChristopher_B=2E=3A=3A.html>   (2016) Morbidity and mortality following pelvic rami fractures in an elderly Newfoundland population.  Masters thesis, Memorial University of Newfoundland.

abstract:
Introduction: Pelvic rami fractures in the elderly are associated with significant morbidity and mortality. Despite our rapidly aging population there is a paucity of literature dealing with fractures of the pelvic rami in this age group. The purpose of this study is report mortality rates following these injuries in the Eastern region of Newfoundland. Additionally, we aim to describe and quantify the important resultant morbidity in this vulnerable elderly population .
Methods: A retrospective chart review was performed of all the pelvic fractures in individuals over the age of 60 between 2000 and 2005 in the Eastern Health region of Newfoundland and Labrador. From these patients, only those with the radiographic parameters consistent with low energy pattern pelvic ring injuries were included. Excluded from the study were those with concurrent fractures of the femur. Survival data, comorbidities, injury characteristics, hospital stay, ambulatory status, and place of residence were recorded from the chart. A surrogate control group was formulated from Statistics Canada survival data for use as a survival comparison group.
Results: There were 80 fractures of the pelvis identified in patients over 60 years old from 2000-2005. Of these, 43 met our inclusion/exclusion criteria and were used in our analysis. The one and five year mortalities of these patients were 16.3% (95% CI; 7.80% to 30.3%) and 58.1% (95% CI; 43.3% to 71.6%), respectively. These were both significantly different from the point estimates from our constructed age and gender matched control group from the Statistics Canada data of 6.58% (one year mortality) and 31.3% (five year mortality). Morbidity was quantified by change in ambulatory status (independent, walker/cane assisted, wheelchair) and change in residential independence (independent, assisted living, nursing home). Post fracture, 36% of patients permanently required increased ambulatory aids and 21% of patients required a permanent increase in everyday level of care.
Conclusion: This study suggests that there may be significantly increased mortality and morbidity following low energy pattern pelvic rami fractures in an elderly population compared to age and gender matched controls. In contrast to previous studies describing these injuries, there is greater homogeneity in this population with respect to age and mechanism of injury. This study generates several important hypotheses for future research and in particular highlights the need for larger prospective studies to identify factors predicting the highest risk for poor outcomes in this population.


identifier: Collins, T. Mark <https://research.library.mun.ca/view/creator_az/Collins=3AT=2E_Mark=3A=3A.html>   (2016) DNA methylation and gene expression in the runt and methyl-deprived pig.  Masters thesis, Memorial University of Newfoundland.

abstract: This research focuses on studying the effect of reduced maternal methyl donor supply as well as intrauterine growth restriction (IUGR) on DNA methylation and on gene expression in pigs. Two separate techniques were used to determine global DNA methylation levels (cytosine extension and methyl incorporation assays) but no differences at the genomic level were identified for either experimental group using either technique. The expression levels of numerous genes involved in methylation directly or whose expression might be expected to change under these experimental conditions were also investigated. The expression of DNMT3a2 and BHMT were significantly lower in B6-deprived pigs but no differences were observed in folate-deprived or runt pigs compared to relevant controls. Further, sex differences were observed, indicating that sex should be considered for future studies regarding methyl-donor or runt-large studies in pigs. Lastly, we discovered an aberrant RNA species (ARS) in numerous pigs in both of our studies, from both Newfoundland and Manitoba research pig populations, and this ARS significantly affected the expression of numerous genes in both control and treatment groups.


identifier: Ramirez-Luna, Ángela V. <https://research.library.mun.ca/view/creator_az/Ramirez-Luna=3A=C1ngela_V=2E=3A=3A.html>   (2013) The exclusive fishing zone for the artisanal fishery in Chocó Colombia: origins, development, and consequences for artisanal fisheries and food security.  Masters thesis, Memorial University of Newfoundland.

abstract:
Exclusive Fishing Zones (EFZs) are a type of place-based management tool often used to
mitigate conflicts between fishing sectors by granting fishing rights to one of the sectors.
This case study enhances our knowledge of the pre- and post-implementation processes
associated with EFZs as well as its consequences for fish stocks and artisanal fishers and
their families. The study draws upon interviews with artisanal fishers and key informants
related to an EFZ established in 2008 in Colombia (the Chocó-EFZ). The findings of this
research indicate that conflicts at sea and on land between artisanal and industrial
fisheries triggered the Chocó-EFZ process. Results also show some potential benefits of
the Chocó-EFZ including: a) mitigating conflicts between artisanal fishers and industrial
shrimpers; b) contributing to the food security of artisanal fishing households and
sustaining local fish stocks; c) supporting an existing informal community-based
management as well as promoting the development of a co-management regime. Potential
negative effects of the Chocó-EFZ include: a) displacement of industrial fishing effort
and, b) job loss within the industrial shrimp industry. The findings of this research also
indicate that there are multiple factors that jeopardize the effectiveness and continuation
of the Chocó-EFZ, some of which include diversity of fisheries, power struggles among
stakeholders, and disagreement about exclusive access to fish resources.


identifier: Isler, Ekrem Bursin <https://research.library.mun.ca/view/creator_az/Isler=3AEkrem_Bursin=3A=3A.html>   (2012) Paleoceanographic and paleoclimatic evolution of the Aegean Sea since the last interglacial (~130 ka BP) with special emphasis on sapropel formation.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Five long piston cores collected from different subbasins of the Aegean Sea
constitute the primary source of data for this PhD thesis. This study is the first to
document a continuous paleoceanographic and paleoclimatic record of the Aegean Sea
since the last interglacial.
The chronostratigraphic reconstructions of the cored sediments based on organic
carbon contents, stratigraphic position of known ash layers and oxygen isotopic curve
matching collectively demonstrate the presence of sapropel S1 and MISS sapropels S3,
S4 and S5 in the Aegean Sea subbasins. Generally, the organic carbon (TOC wt%)
contents in sapropels range between 0.8% and 2% with highest concentrations of 9-13%
in sapropels S4 and S5.
Average sedimentation rates range between 4.7 and 11.8 cmlka with highest rates
being observed in Euboea and North Ikaria basins (9.8 and 11.8 cm lka, respectively).
The timing of the onset of sapropels S4 and S5 mostly predate those in the eastern
Mediterranean with ages ranging from 106.4-105.6 and 128.6-128.4 ka BP, respectively.
On the other hand, the initiation of the onset of sapropel S3 (i.e., 83.2-80.4 ka BP) seems
to agree with its Mediterranean counterparts, which highlights the heterogeneity of the
Aegean Sea subbasins in terms of rapid vs. lagged response to changing climatic
conditions. The sapropel initiations appear to be synchronous across the Aegean Sea;
whereas, the terminations display a wider temporal variability implying that the cessation
of sapropels is controlled both by the amplitude of paleoclimatic changes and the
physiography/location ofthe subbasins. Quantitative variations in the planktonic faunal assemblages exhibit a sequence of
bioevents during the last -130,000 years which allow identification of four major
biozones. The distributional patterns of the most significant taxa demonstrate similar
trends among all core localities suggesting that the major changes in the planktonic
foraminifera assemblages have taken place rather synchronously in the Aegean Sea.
Sapropels S3, S4 and S5 were deposited under similar hydrographic conditions during
which a distinct deep chlorophyll maximum (DCM) layer was established. This situation
points to a stratified water column and increased export productivity during times of
sapropel formation. On the other hand, the faunal contrast between Sl and older
sapropels indicates that the former was developed in the absence of a DCM layer, lacking
a deep phytoplankton assemblage. Under such conditions, oxygen advection via
intermediate water flow must have been significantly reduced which implies significant
stagnation.
Sapropels are interpreted to have been deposited under normal marine conditions
with temporary establishment of semi-euxinic bottom water conditions. Both marine and
terrestrial organic matter contributed equally to MISS sapropels. In addition, organic
carbon isotopic values across sapropels are more depleted than those in the eastern
Mediterranean which, in tum, suggests enhanced riverine input during their deposition.
Primary productivity calculations show that, particularly for sapropels with very high
TOC values, both preservation and increased productivity are imperative in order to
deposit sapropels with very high organic carbon contents (i.e., up to 13%).


identifier: Alhasawi, Asia Ahmed <https://research.library.mun.ca/view/creator_az/Alhasawi=3AAsia_Ahmed=3A=3A.html>   (2016) Microstructural imaging of the eye and mechanical mapping of retinal tissue using Atomic Force Microscopy (AFM).  Masters thesis, Memorial University of Newfoundland.

abstract:
The objective of this study is to investigate the structures and mechanical properties
of mouse eyes in correspondence with their functions. Moreover, my work places particular
emphasis on the retina as it is associated with several diseases. To measure the
mechanical properties of retinal tissue, eye samples of mice are taken and analyzed
utilizing Force Spectroscopy to determine the Young’s modulus. Force mapping of
the sample is done by nanoindentation (force curves), and Atomic Force Microscopy
(AFM) is used to image the topography of our sample. AFM and force mapping
provide key information on the nanoscale mechanical properties and structure of normal
tissue. This fine level of detail provides insight on a length scale relevant to an
individual cell.
Our results also provide a baseline structure to enable the identification of mechanical
indicators for disease. Most of the diseases that affect the eyes, including
glaucoma and macular degenerations involve structural changes in the eyes, for example,
affecting the photoreceptor or degeneration of layers thus causing eye damage.
Damage on the nanoscale is not obvious given that research in that area is still underdeveloped.
Therefore, the use of nanomechanical mapping has proved to be very useful
because of providing in-depth knowledge regarding the characteristic microstructure
and mechanical features of the normal eye.


identifier: Ebrahimi, Alireza <https://research.library.mun.ca/view/creator_az/Ebrahimi=3AAlireza=3A=3A.html>   (2016) Local buckling response of subsea flexible pipe.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Applications of flexible pipe have been growing because of its characteristic features (i.e. low bending stiffness and high axial strength) which are because of various composite and steel layers have been used in the structure of this pipe. These characteristics make flexible pipeline capable to transfer oil and gas from wellhead to the fixed and floating platforms, or to inject water into the wells.
There are a number of technical and economic advantages for the use of flexible pipe with respect to conventional rigid line pipe. Rapid installation, typically 5 to 10 km per day, and special polymer material (i.e. elimination of needs for cathodic protection) suggest it may be used as a suitable option for installation in harsh environment fields. Furthermore, the pipe exhibits advantageous mechanical performance characteristics with respect to strength, collapse resistance, thermal expansion and vibration response, and fatigue and abrasion resistance.
Flexible pipe comprises of carcass and pressure armours which are interlocked layer wrapped with angle close to 90 degree and stand toward radial pressures; extruded polymer layers which prevents leakage of fluids to the other layers; high strength tape which are considered to prevent radial expansion of tensile armours; tensile armours which are rectangular cross section helical wires with pitch angle close to 35 degrees made by high strength steel to stand for axial and bending and torsional loads.
For deepwater flexible pipe systems, in response to local damage and loss of constraint, the tensile armour wires may exhibit two forms of local instability that includes radial buckling (i.e., birdcaging) and lateral buckling. These two failure modes may occur during installation or operational conditions due to pure axial compression and bending curvature.
Due to the complex mechanics for integrating the mechanical response of each layer and the corresponding interactions between adjacent layers, there are few analytical and numerical modelling studies addressing the mechanical performance of composite flexible pipe. These investigations are constrained by the underlying idealizations and assumptions used, and the available hardware and software technology. As the technology development and fabrication of flexible pipe is company-specific proprietary, intellectual property, there are few experimental studies available in the public domain. To improve knowledge, and potentially advance current engineering design and practice, it is important to develop a thorough understanding of the pipe mechanical response, strength performance limits and deformation mechanisms.
The main goals and major contributions in this thesis are the development and advancement of three-dimensional finite element modelling procedures investigating the local radial and lateral buckling of the tensile armour wires in flexible pipe. This investigation has provided new knowledge and insight, which is either incremental or unique, on these local instability mechanisms for tensile armour wires. The importance of using an implicit solver rather than the traditional use of an explicit solver has also been established. The simplifying assumptions of existing finite element and analytical models mostly have been improved and built sufficient reliability to be used for the different industrial practices.
The significance of pipe model characteristics (e.g., element type, topology, segment length), interlayer contact formulations, boundary conditions (i.e., natural, essential), interface friction, hydrostatic loads, damage condition, and curvature on the local instability mechanisms have been examined which is another unique step for consolidating the design standards.


identifier: Mondal, Aninda Suvra <https://research.library.mun.ca/view/creator_az/Mondal=3AAninda_Suvra=3A=3A.html>   (2016) Design and similitude study of composite sandwich beam.  Masters thesis, Memorial University of Newfoundland.

abstract:
In this study, failure mode maps of composite sandwich panels are examined. Using
Euler-Bernoulli beam theory, theoretical models are developed. The developed models
are validated with established models in the literature. The models are compared with
the established models using experimental data from literature. By comparing the
developed models with the established models, it is concluded that the described
models provide sufficient accurate results. Failure mode maps are constructed by
using the non-dimensional form of the developed models. This concept of failure
mode map is extended to provide a useful design tool for composite sandwich beam
manufacturers. Also in this study, scaling laws are derived for a composite sandwich
beam using the rules of similitude. Scaling laws define the relationships between a
small specimen and a larger prototype structure. By using these scaling laws, it is
possible to design a small scale model and by extrapolating the data from the small
scale model, the behavior of a large scale prototype can be predicted. In the current
study, similitude conditions for composite sandwich beams are developed for three
loading conditions, uniformly distributed load, shear load and moment. To test the
scaling laws a three-point bending test and a four-point bending test are taken from
literature . Finite element analysis is used to obtain the stress distributions through
the thickness of these composite sandwich models. Using the similitude conditions
larger prototype of these models are created. Through-the-thickness stresses between
the model and the prototype are compared and found to be in excellent agreement.


identifier: Zhang, Daiying <https://research.library.mun.ca/view/creator_az/Zhang=3ADaiying=3A=3A.html>   (2016) Opto-microfluidic devices with femtosecond laser microfabrication.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Opto-microfluidics is a novel technology that integrates optical devices and systems with microchannels to investigate the properties of fluids. Opto-microfluidic devices have been increasingly recognized as important miniaturized devices for optical measurements, biological analyses, and chemical syntheses. These devices significantly reduce reagent consumption, waste production, analysis time and labour costs. Common fabrication techniques include soft lithography, microelectromechanical systems (MEMS) and hot embossing.
In this dissertation, opto-microfluidic devices fabricated by two-photon polymerization (TPP) technique with femtosecond lasers and standard soft lithography are proposed. After analyzing the fabrication properties of the femtosecond laser, we choose optimal parameters to fabricate optical structures in photoresist material SU-8, and integrate them with microchannels which are produced by a standard soft lithographic technique. Diffractive grating, Mach-Zehnder interferometer (MZI) and optical microring resonators based refractive index (RI) and temperature sensors are designed, fabricated and demonstrated. The sensitivities in different conditions are thoroughly investigated. By combining fluid mechanics and optics, two functional opto-microfluidic devices realizing simultaneous particle sorting and RI sensing are successfully proved. In these devices, filters fabricated by femtosecond lasers are used to sieve and control the flow of particles in suspension, and then the purified liquid is induced into the optical structures to measure the RI. The opto-microfluidic devices described in this dissertation verify the practicability and effectiveness as a lab-on-a-chip platform.


identifier: Andrews, Dorothy Lynn <https://research.library.mun.ca/view/creator_az/Andrews=3ADorothy_Lynn=3A=3A.html>   (1981) The effects of audio cueing and an instructions, feedback and praise package on the distribution of teacher praise to students of differing on-task levels.  Masters thesis, Memorial University of Newfoundland.

abstract:
In an audio cueing system, a teacher is presented
with randomly spaced auditory signals via tape recorder
or intercom. The teacher is instructed to praise a child
who is on-task each time the cue is presented. In this
study, a baseline was obtained on the teacher's praise
rate and the children's on-task behaviour in a Grade 5
class of 37 students. Children were then divided into
high, medium and low on-task groups.
Followinq baseline, the teacher's praise rate and the
children's on-task behaviour were observed under the
following successively implemented conditions:
(l) Audio Cueing 1: Audio cueing at a rate of 30 cues
per hour was introduced into the classroom and remained in
effect during subsequent conditions. A group of consistently
low on-task children were delineated. (2) Audio
Cueing Plus 'focus praise package': Instructions to direct
two-thirds o£ the praise to children identified by the
experimenter (consistently low on-task children), feedback
and experimenter praise for meeting or surpassing the
criterion distribution of praise ('focus praise package')
were introduced. (3) Audio Cueing 2: The 'focus praise
package' was removed. (4) Audio Cueing Plus 'increase
praise package': Instructions to increase the rate of
praise, feedback and experimenter praise for improved praise rates ('increase praise package') were introduced.
The primary aims of the study were to determine the
distribution of praise among hi~h, medium and low on-task
children when audio cueinq was first introduced and to
investigate the effect of the 'focus praise package' on
the distribution of teacher praise. The teacher distributed
her praise evenly among the hiqh, medium and low
on-task groups during audio cueing 1. The effect of the
'focus praise package' was to increase the percentage of
praise received by the consistently low on-task children.
Other findings tended to suggest that audio cueing
increased the teacher's praise rate. However, the teacher's
praise rate unexpectedly decreased to a level considerably
below the cued rate during audio cueing 2. The 'increase
praise package' appeared to increase the teacher's praise
rate above the audio cueing 2 level.
The effect of an increased praise rate and two distributions
of praise on on-task behaviour were considered.
Significant increases in on-task behaviour were found in
audio cueing 1 for the low on-task group, in the audio
cueing plus 'focus praise package' condition for the entire
class and the consistently low on-task group and in audio
cueing 2 for the medium on-task group. Except for the high
on-task children who did not change, the effects of the
experimental manipulations on on-task behaviour were e quivocal. However, there were some indications that directing 67%
of the praise to the consistently low on-task children
was more effective for increasing this group's on-task
behaviour than distributing praise equally among on-task
groups.


identifier: Deva, Narendra <https://research.library.mun.ca/view/creator_az/Deva=3ANarendra=3A=3A.html>   (1979) Design construction and testing of a heat loop for study of fouling and its interrelationship to corrosion in heat exchanger tubes.  Masters thesis, Memorial University of Newfoundland.

abstract:
A heat loop suitable for the study of thermal fouling and its
relationship to corrosion processes was designed, constructed and
tested. The design adopted was an improvement over those used by
such investigators as Hopkins and the Heat Transfer Research Institute
in that very low levels of fouling could be detected accurately, the
heat transfer surface could be readily removed for examination and
the chemistry of the environment could be carefully monitored and
controlled. In addition, an indirect method of electrical heating of
the heat transfer surface was employed to eliminate magnetic and
electric effects which result when direct resistance heating is
employed to a test section.
The testing of the loop was done using a 316 stainless steel
test section and a suspension of ferric oxide and water in an attempt
to duplicate the results obtained by Hopkins. Two types of thermal
·fouling resistance versus time curves were obtained .
(i) Asymptotic type fouling curve, similar to the fouling behaviour
described by Kern and Seaton and other investigators, was the
most frequent type of fouling curve obtained. Thermal fouling
occurred at a steadily decreasing rate before reaching a final
asymptotic value.
(ii) If an asymptotically fouled tube was cooled with rapid cir-
·culation for periods up to eight hours at zero heat flux, and heating
restarted, fouling recommenced at a high linear rate. The fouling results obtained were observed to be similar and
1n agreement with the fouling behaviour reported previously by Hopkins
and it was possible to duplicate quite closely the previous results .
This supports the contention of Hopkins that the fouling results
obtained were due to a crevice corrosion process and not an artifact
of that heat loop which might have caused electrical and magnetic
effects influencing the fouling.
The effects of Reynolds number and heat flux on the asymptotic
fouling resistance have been determined. A single experiment to study
the effect of oxygen concentration has been carried out.
The ferric oxide concentration for most of the fouling trials
was standardized at 2400 ppM and the range of Reynolds number and
heat flux for the study was 11000-29500 and 89-121 KW/M², respectively.


identifier: Dunphy, Gary Brian <https://research.library.mun.ca/view/creator_az/Dunphy=3AGary_Brian=3A=3A.html>   (1980) Parasite-host interaction of the protoplast isolates of Entomophthora egressa with the eastern hemlock looper and the eastern spruce budworm.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Hemocytes of the insects Lambdina fiscellaria fiscellaria
and Choristoneura fumiferana did not adhere to the
protoplasts of ~he fungus EntomoEhthora egressa. Hemocyte
reaction for both insect species to test-particles was not
suppressed by the protoplasts. The spherule cells of _-L.
fiscellaria fiscellaria adhered to the spherical hyphal
bodies and hyphae of ~· ~gressa. The granular cells of -c.
fumiferana adhered to the hyphae of ~· egress~. Protoplasts
exposed to papain were attacked by the granular ·cells of
-c. fumiferana.
Spent growth medium of both protoplast isolates produced
paralysis when injected into -c. fumiferana larvae.
Evidence suggests that heat-stable proteins may be involved.
Protoplast isolates showed differences in the growth
rates and regeneration sequences using coagulated egg yolk
medium, a highly modified version of Grace's insect tissue .
culture medium (MGM) and modifications of MGM and in the
presence of C0₂. The isolates also differed in the changes
that they induced in MGM composition during protoplast
growth and in the rates of glucose utilization and protein
secretion. The serum of c. fumiferana larvae contained protein(s)
which we believe adhere to the cell membranes of the protoplasts
of E. egressa. Evidence is presented for hemocyteplasn~
interaction in the presence of protoplasts. Components
in the larval serum were found to influence protoplast
growth patterns. The possibility of antiprotoplast serum
activity is presented. Melanin, toxic levels of ninhydrinpositive
compounds and antiprotoplast proteins may have
been involved in this activity.
The granular cells of -L. fiscellaria fiscellaria and
Q• fumiferana adhered to the hyphae of ,Rhizopus ~i$rican~.
Spores of Absidia repens and the bacteria Escherichia coli
and Bacillus cereus adhered to the granular cells of both
species of· insects. The granular cells and plasmatocytes
of -c. fumiferana were capable of phagocytosing -B. cereus.
Adhesion of .A... . repens spores to c. fumiferana granular cells ~ . -
was stimulated by N-acetylglucosamine and glucosamine, moderately
reduced by D-fucose, D-arabinose, D-mannose, D-galatose
and sucrose and mildly reduced by D-glucose, D-fructose and
trehalose. There was no evidence of humoral opsonins in
larval hemolymph favoring test-particle-hemocyte interaction.
Granular cells of c. fumiferana exposed to papain had reduced
affinities for A. repens spores.


identifier: Evans, James Llewelyn <https://research.library.mun.ca/view/creator_az/Evans=3AJames_Llewelyn=3A=3A.html>   (1980) An alkalic volcanic suite of the Labrador Trough, Labrador.  Masters thesis, Memorial University of Newfoundland.

abstract:
The Nimish Subgroup igneous suite is a linear belt of volcanic and plutonic rocks in the Dyke Lake area of the southern Labrador Trough.
The volcanics are interbedded with the sediments of the Wishart and Sokoman Formations of the Aphebian aged, Knob Lake Group. The sokoman Formation forms a time stratigraphic horizon that separates the lower Petitsikapau Lake Formation from the upper Astray Lake formation of the Nimish Subgroup. The occurrence of these volcanics within the Knob Lake Group is unique relative to Labrador Trough stratigraphy, as elsewhere the Knob Lake Group is a dominantly sedimentary succession and volcanics are restricted to the younger Doublet Group.
Stratigraphic relationships between the Nimish Subgroup and the Sokoman formation indicate contemporaneous volcanic, clastic and chemical sedimentary activity. The internal stratigraphy of the Sokoman Formation exhibits a three-fold subdivision that is broadly correlatable with similar subdivisions in the Schefferville "main ore zone", 30 miles to the northwest. A detailed facies and paleogeographic model relating the volcanic activity to iron formation deposition in the Dyke Lake is presented.
The rocks of the Dyke Lake area have been affected by lower greenschist facies metamorphism during the Hudsonian orogenic event, circa 1735 my. Geochemical evidence indicates that the igneous rocks of the Nimish Subgroup have been metasomatized with large degrees of mobility in Na₂O, K₂O, CaO, MgO, SiO₂, FeO and Fe₂O₃ suspected. The "immobile trace elements", Ti, Zr, Nb, Y and Ga imply that the Nimish lavas are a mildly alkaline suite that has an alkali basalt-trachyandesite-comendite differentiation scheme.
The rare earth element, REE, geochemistry of the Nimish Subgroup is supportive of the alkaline nature of the volcanics and has been used to model the fractional crystallization petrogenesis involved in the two volcanic cycles. The geological, geochemical and geophysical evidence indicates that the Nimish Subgroup lavas are possibly a rift facies, alkaline suite related to the tensional tectonic regime that preceeded the extrusion of voluminous tholeiitic lavas of the Doublet Group.


identifier: Hedderson, Terry Albert <https://research.library.mun.ca/view/creator_az/Hedderson=3ATerry_Albert=3A=3A.html>   (1987) The mosses of Terra Nova National Park, Eastern Newfoundland, a bryofloristic analysis and interpretation.  Masters thesis, Memorial University of Newfoundland.

abstract:
The known moss flora of Terra Nova National Park, eastern Newfoundland,
comp~ises 210 species. Eighty-two percent of the moss species occurring in Terra
Nova are widespread or widespread-sporadic in Newfoundland. Other
Newfoundland distributional elements present in the Terra Nova moss flora are
the northwestern, southern, southeastern, and disjunct elements, but four of the
mosses occurring in Terra Nova appear to belong to a previously unrecognized
northeastern element of the Newfoundland flora.
The majority (70.9%) of Terra Nova's mosses are of boreal affinity and are
widely distributed in the North American coniferous forest belt. An additional
10.5 percent of the Terra Nova mosses are cosmopolitan while 9.5 percent are
temperate and 4.8 percent are arctic-montane species. The remaining 4.3 percent
of the mosses are of montane affinity, and disjunct between eastern and western
North America. In Terra Nova, temperate species at their northern limit are
concentrated in balsam fir stands, while arctic-montane species are restricted to
exposed cliffs, scree slopes, and coastal exposures. Montane species are largely
confined to exposed or freshwater habitats. Inability to tolerate high summer
temperatures limits the distributions of both arctic-montane and montane species.
In Terra Nova, species of differing phytogeographic affinities co-occur on
cliffs and scree slopes. The microhabitat relationships of five selected species from
such habitats were evaluated by Discriminant Functions Analysis and Multiple
Regression Analysis. The five mosses have distinct and different microhabitats on
cliffs and scree slopes in Terra Nova, and abundance of all but one is associated with variation in at least one microhabitat variable. Micro-distribution of
Grimmia torquata, an arctic-montane species at its southern limit, appears to be
deterJ]lined by sensitivity to high summer temperatures. Both southern mosses at
their northern limit (Aulacomnium androgynum, Isothecium myosuroides)
appear to be limited by water availability and, possibly, by low winter
temperatures. The two species whose distributions extend both north and south or
the study area (Encalypta procera, Eurhynchium pulchellum) show no clear
relationship with microclimate.
Dispersal factors have played a significant role in the development of the
Terra Nova moss flora. Compared to the most likely colonizing source (i .e. the
rest of the island of Newfoundland), species with small diaspores have colonized
the study area to a proportionately much greater extent than have species with
large diaspores. Hierarchical log-linear analysis indicates that this is so for all
affinity groups present in Terra Nova. The apparent dispersal effects emphasize
the comparatively recent glaciation of the area, and may also have been enhanced
by anthropogenic influences. The restriction of some species to specific habitats,
or to narrowly defined microhabitats, appears to strengthen selection for easily
dispersed taxa.


identifier: Houlden, Penelope Daphne <https://research.library.mun.ca/view/creator_az/Houlden=3APenelope_Daphne=3A=3A.html>   (1985) The expression of tradition: perennial gardening in St. John's, Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract:
In order to understand the processes which effect the
individual realization of garden design, I have studied the
practise of perennial gardening in St. John's, Newfoundland.
I begin with an examination of the practical constraints on
design intentions resulting from difficult growing conditions,
and a limited market of plant materials, relevant gardening
literature and skilled· garden workers. I establish the local
repertoire of design models within which individual gardens
are executed. Finally, I record the "text" of six ·perennial
gardens and the commentary of their principal designers in
order to examine both the implicit and explicit considerations
informing the structure of the gardens.
A sample of gardens has been examined in order to represent
two principal performance contexts -- the public
garden and the private garden -- and a characteristic selection
of garden style and plant material is observed.
The public gardens typically recall the "traditional" use
of perennials in Newfoundland gardens through the selection
of "old fashioned" plant species and through the overall
design of the bed. In contrast, the private gardeners have
generally adopted the style of the more recently fashionable
"perennial border". However, below the level of design
the private gardeners continue to express a sense of tradition
in the _repetition of conventions of behaviour and expression
among the gardeners' families and friends, in the propagation of individual plants grown by the gardeners'
parents, and in the maintenance of a family interest in
gardening. This examination of the practise of gardening,
thus, leads away from the folklorists' traditional focus on
the continuity of the traditional "item" towards an understanding
of tradition as an expression of continuity which
is given tangible shape according to the avenues of shared
communication within particular performance contexts.


identifier: Mitchell, Karen <https://research.library.mun.ca/view/creator_az/Mitchell=3AKaren=3A=3A.html>   (1989) The relationship between visual acuity and conceptual tempo.  Masters thesis, Memorial University of Newfoundland.

abstract:
The purpose of this study was to examine the relationship between visual
acuity and the two components of conceptual tempo, response accuracy and response
latency. Subjects were chosen at random. Each subject was then administered a
test of conceptual tempo, the Matching Familiar Figures Test (MFFT) and a test of
visual acuity, the Snellen. The only significant relationship found was that between
response accuracy and near visual acuity. Subjects with superior visual acuity
made significantly fewer errors than did those with average or inferior acuity. It
was concluded that visual acuity is an important determinant of MFFT performance.
Based on these results, it was recommended that further research examine the
relationship between visual acuity and other psychometric measures containing a
visual component.


identifier: Park, Cynthia Ann <https://research.library.mun.ca/view/creator_az/Park=3ACynthia_Ann=3A=3A.html>   (1980) The mermaid series of Elizabethan and Jacobean dramatists (1887-1909): a literary and critical history.  Masters thesis, Memorial University of Newfoundland.

abstract:
The Mermaid Series (1887-1909) edited by Havelock Ellis was a major
watershed in appreciation of Elizabethan and Jacobean drama. Before it
appeared plays were available to general readers in scattered anthologies,
large expensive collected editions or in expurgated selections which
included only the more lyrical speeches and memorable scenes. Criticism
of the drama followed suit; the majority of critics concentrated on the
sections which appealed to the romantic and sentimental tastes of nineteenthcentury
readers. The two men who conceived the Mermaid Series, John
Addington Symonds and Havelock Ellis, approached the drama differently
from their contemporaries; Symonds studied a play as a whole work of art
and Ellis concentrated on its view of life. Both were unsatisfied with
the "select beauties", fragmented approach and wanted readers to have the
best plays in their entirety easily available in handy, inexpensive
editions. Symonds's awareness of the drama as theatre was combined with a
historical perspective allowing him to judge the drama in relation to its
own time. He made a lasting but hitherto underestimated contribution to
study of Beaumont and Fletcher, Dekker, Marlowe, and Ford. Ellis's work
on the drama is overshadowed today by his studies of sex but his concentration
on ideas and appreciation of unconventional behaviour enabled him to
formulate new views on Ford, Middleton and Chapman. The two other major
editors to work on the series, A. C. Swinburne and Arthur Symons had more
conventional nineteenth-century approaches. Both were impressionistic
critics who were most attracted to the l~nguage of the drama. Swinburne,
however, occasionally transcended his fragmented approach and offered
significant interpretations of Tourneur, Massinger; 'The .Changeling, Heywood. Symons's range was more limited but his form of impressionism was valuable
for its concentration on the aesthetic experience at the heart of a work
of art. His most important contributions were the study of Middleton and
Massinger. Besides these four major critics numerous lesser writers worked
on the series. Their editorial work was valuable and some, notably Ernest
Rhys, c. H. Herford and Thomas Dickinson offered criticism of enduring
importance.
In my first chapter I consider the general availability of texts of
the Elizabethan and Jacobean drama in the nineteenth century, the general
attitudes towards the drama, and the critical approaches of each of the
editors. The subsequent chapters are organized around the volumes of the
series. I consider the climate of opinion in which each appeared, assess
its critical and editorial contribution and evaluate the work of the other
Mermaid editors on the dramatist included in the volume. My study shows
that the concept of the Mermaid Series and the work of its editors helped
to revolutionize study of the Elizabethan and Jacobean dramatists by providing
good texts and by pointing the way to our present view of the plays
as whole works of art.


identifier: Winter, Lawrence Stephen <https://research.library.mun.ca/view/creator_az/Winter=3ALawrence_Stephen=3A=3A.html>   (2000) Derivation of base-line geochemistry, petrography, and isotopic data for the host rocks to the Lucky Strike deposit and comparison with data from other alteration zones, Buchans Mining Camp, Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract:
The Buchans ore bodies of central Newfoundland represent some of the highest
grade VMS deposits ever mined. These Kuroko-type deposits are also known for the well
developed and preserved nature of the mechanically transported deposits. The deposits
are hosted in Cambro-Ordovician, dominantly calc-alkaline, bimodal volcanic and
epiclastic sequences of the Notre Dame Subzone, Newfoundland Appalachians.
Stratigraphic relationships in this zone are complicated by extensively developed, brittledominated
Silurian thrust faulting.
Hydrothermal alteration of host rocks is a common feature of nearly all VMS
deposits, and the recognition of these zones has been a key exploration tool. Alteration of
host rocks has long been described to be spatially associated with the Buchans ore bodies,
most notably with the larger in-situ deposits. This report represents a base-line study in
which a complete documentation of the geochemical variance, in terms of both primary
(igneous) and alteration effects, is presented from altered volcanic rocks in the vicinity of
the Lucky Strike deposit (LSZ), the largest in-situ deposit in the Buchans camp.
Packages of altered rocks also occur away from the immediate mining areas and
constitute new targets for exploration. These zones, identified mostly by recent and
previous drilling, represent untested targets and include the Powerhouse (PHZ),
Woodmans Brook (WBZ) and Airport (APZ) alteration zones, as well as the Middle
Branch alteration zone (MBZ), which represents a more distal alteration facies related to
Buchans ore-formation. Data from each of these zones were compared to those from the
LSZ in order to evaluate their relative propectivity.
Derived litho geochemical data served two functions: (i) to define primary
(igneous) trends and (ii) secondary alteration trends. Primary trends were established
using immobile, or conservative, elements (i. e., HFSE, REE, Th, Ti0₂, Al₂0₃, P₂0₅).
From these, altered volcanic rocks were interpreted in terms of composition (e.g., basalt -
rhyodacite) and magmatic affinity (e.g., calc-alkaline vs. tholeiitic). The information
suggests that bimodality is a common feature of all zones, with most rocks plotting as
either basalt/andesite or dacite (or rhyodacite); andesitic senso stricto compositions are
rare. Magmatic affinities are more varied and complex, but indicate that all units are arc
volcanic sequences. Rocks from the LSZ/MBZ represent a transitional to calc-alkalic
sequence, however, a slight shift in key geochemical discriminants occurs between the
foot-wall to the hanging-wall. Specifically, mafic and felsic lavas of the foot-wall are of
transitional (or mildly calc-alkaline) affinity whereas the hanging-wall rocks are relatively
more strongly calc-alkaline as indicated by enriched LREE/HREE and higher ZrN, NbN
and other ratios in the latter. The geochemical variations also serve as a means to separate
the units (at least the felsic rocks) into hanging-wall and foot-wall sequences, therefore
providing a valuable exploration tool. Volcanic rocks from the WBZ/PHZ (and probably
the APZ) are more typical of tholeiitic to transitional suites, yielding flatter mantlenormalized
REE patterns and lower ZrN ratios. Thus, the relationships between the immediate mining area (represented by LSZ/MBZ) and the Buchans East (PHZ/WBZ)
and the APZ are uncertain.
Host rocks for all zones consist of mafic to felsic volcanic rocks, though the
proportion of pyroclastic and epiclastic rocks, is greatest at the LSZ. Phenocryst
assemblages and textures are common in all zones, with minor exceptions, and are not
useful for discrimination purposes. Felsic rocks from all zones are dominated by sericiteclay+/-
silica alteration, whereas mafic rocks are dominated by chlorite- quartz- sericite
alteration. Pyrite is ubiquitous in all moderately altered rocks and minor associated base
metal sulphides occur locally. The exception is at Lucky Strike, where stockwork quartzveining
contains abundant base-metal mineralization and barite. Rocks completely
comprised of chlorite (chloritite) also occur in the LSZ foot-wall. In addition, K-feldspar
alteration occurs in felsic volcanic rocks at the MBZ associated with Zn-Pb-Ba and,
notably, without chlorite. This zone represents a peripheral, but proximal, zone of
alteration induced by lower temperature hydrothermal fluids, presumably with little
influence from seawater.
Alteration geochemistry was interpreted from raw data as well as from mass
balanced (recalculated) data derived from immobile element pairs. The data from the
LSZ/MBZ indicate a range in the degree of alteration from only minor to severe
modification of precursor compositions. Ba tends to show a strong positive correlation
with K₂0, although most Ba occurs as barite. With respect to mass changes, Al₂0₃, Ti0₂
and P₂0₅ were shown to be immobile. Nearly all rocks display mass loss of Na₂O, CaO,
and Sr reflecting feldspar destruction. These trends are usually mirrored by K₂0-Rb and
MgO addition, indicating sericitic and chloritic alteration, respectively. More substantial
gains ofK₂0 often occur in rocks with K-feldspar alteration, whereas a few samples also
displayed excessive MgO enrichment and represent chloritites. Fe₂0₃ indicates both
chlorite and sulphide formation. Si0₂ addition is almost always the case for the altered
mafic rocks as silica often infills amygdules and replaces the finer tuffaceous material.
The felsic rocks display more variability in Si0₂. Silicic, sericitic and chloritic alteration
trends were observed from the other zones, but not K-feldspar, chloritite, or barite.
Microprobe analysis of chlorites, sericites and carbonates indicate: (i) sericites
from all zones are defined as muscovite and are not phengitic; (ii) at the LSZ, chlorites
ranged from Fe-Mg chlorites (pycnochlorite) to Mg-rich chlorite (penninite), with the
latter occurring in the stockwork zone and more proximal alteration facies; (iii) chlorites
from the WBZ were typical of those from the more distal alteration facies of the LSZ,
plotting as ripidolite to pycnochlorite; (iv) conversely, chlorite from the PHZ plot with
Mg-Al-rich compositions (chlinochlore to penninite); and (v) carbonate species from each
zone are also varied, with calcite occurring in each zone, in addition to dolomite and
ankerite in the PHZ and WBZ, respectively.
Lead isotope ratios for galena separates from the different various zones, when
combined with data from older studies, tend to cluster into four distinctive fields.
Overall, the data plot on a broad mixing line and indicate evolution in a relatively low-μ environment. Data from sulphide stringers in altered MBZ rocks, as well as from clastic
sulphides (Sandfill prospect), plot in the Buchans ore field, as do the data for galena from
altered rocks in the APZ. Samples from the Buchans East area are even more primitive
than the Buchans ores, with lead from the PHZ plotting with the Connel Option prospect
and data from the WBZ matching that of the Skidder prospect. A sample from a newly
discovered debris flow-type sulphide occurrence (Middle Branch East) yields lead isotope
ratios that are slightly more radiogenic than Buchans and plot with the Mary March
alteration zone. Data within each cluster are interpreted to represent derivation from
individual hydrothermal systems in which metals were derived from a common source.


identifier: Gharahbagheri, Hassan <https://research.library.mun.ca/view/creator_az/Gharahbagheri=3AHassan=3A=3A.html>   (2016) Industrial fault detection and diagnosis using Bayesian belief network.  Masters thesis, Memorial University of Newfoundland.

abstract: Rapid development in industry have contributed to more complex systems that are prone to failure. In applications where the presence of faults may lead to premature failure, fault detection and diagnostics tools are often implemented. The goal of this research is to improve the diagnostic ability of existing FDD methods. Kernel Principal Component Analysis has good fault detection capability, however it can only detect the fault and identify few variables that have contribution on occurrence of fault and thus not precise in diagnosing. Hence, KPCA was used to detect abnormal events and the most contributed variables were taken out for more analysis in diagnosis phase. The diagnosis phase was done in both qualitative and quantitative manner. In qualitative mode, a networked-base causality analysis method was developed to show the causal effect between the most contributing variables in occurrence of the fault. In order to have more quantitative diagnosis, a Bayesian network was constructed to analyze the problem in probabilistic perspective.


identifier: Sajedinia, Zahra <https://research.library.mun.ca/view/creator_az/Sajedinia=3AZahra=3A=3A.html>   (2015) Glia-augmented artificial neural networks: foundations and applications.  Masters thesis, Memorial University of Newfoundland.

abstract:
Information processing in the human brain has always been considered as a source
of inspiration in Artificial Intelligence; in particular, it has led researchers to develop
different tools such as artificial neural networks. Recent findings in Neurophysiology
provide evidence that not only neurons but also isolated and networks of astrocytes
are responsible for processing information in the human brain. Artificial neural net-
works (ANNs) model neuron-neuron communications. Artificial neuron-glia networks
(ANGN), in addition to neuron-neuron communications, model neuron-astrocyte con-
nections. In continuation of the research on ANGNs, first we propose, and evaluate a
model of adaptive neuro fuzzy inference systems augmented with artificial astrocytes.
Then, we propose a model of ANGNs that captures the communications of astrocytes
in the brain; in this model, a network of artificial astrocytes are implemented on top
of a typical neural network. The results of the implementation of both networks show
that on certain combinations of parameter values specifying astrocytes and their con-
nections, the new networks outperform typical neural networks. This research opens
a range of possibilities for future work on designing more powerful architectures of
artificial neural networks that are based on more realistic models of the human brain.


identifier: Fotso Soh, Jocelyn <https://research.library.mun.ca/view/creator_az/Fotso_Soh=3AJocelyn=3A=3A.html>   (2016) Sympathetic nerve response and vascular function: effects of inflammation on nerve-mediated vasoconstriction in the rat tail artery.  Masters thesis, Memorial University of Newfoundland.

abstract:
Chronic inflammation contributes to changes in vascular function in a range of vascular
diseases. Whether these vascular changes in function are nerve-mediated remains unknown.
Sympathetic nerve-mediated responses in isolated tail arteries of rats in an experimentally
induced chronic inflammatory state were examined. Electrical field stimulations between 1.25
and 40 Hz resulted in frequency-dependent contractions sensitive to tetrodotoxin. Neurogenic
contractions in blood vessels of experimental animals were significantly greater compared to
those of control animals. Alpha₁-adrenoceptor antagonists significantly inhibited contractile
responses at lower frequencies of stimulation (1.25 – 5 Hz) in blood vessels of experimental rats
compared to controls. Alpha₂-adrenoceptor antagonism had no effect on electric field-evoked
vasoconstrictions in experimental and control animals. Inhibition of neuronal reuptake by
cocaine comparably enhanced field-stimulated responses in blood vessels of experimental and
control animals. Furthermore, the expression of α₁- and α₂-adrenoceptors was different in the
endothelium of blood vessels of treated animals compared to control animals. The observation
of enhanced neurogenic contraction in blood vessels of animals in a chronic state of
inflammation may be attributed to alterations in responsiveness and/or distribution of postjunctional
α₁-adrenoceptors.


identifier: Royle, Scott <https://research.library.mun.ca/view/creator_az/Royle=3AScott=3A=3A.html>   (2016) Five times daily: the dynamics of prayer worship among Muslim immigrants in St. John's, NL.  Masters thesis, Memorial University of Newfoundland.

abstract:
This thesis explores the ritual of prayer among Muslim immigrants in the city of St. John's, NL.
Immigration across national, cultural, religious, and ethnic borders is a moment in an individual's life
marked by significant change. My premise is that in such contexts the relatively conservative nature of
religious ritual can supply much-needed continuity, comfort, and consolation for individuals living through
the immigrant experience. As well, ritual forms are often put under stress when transferred to a
considerably different place and cultural context, where “facts on the ground” may be obstacles to
traditional and familiar ritual forms. Changes to the understanding or practice of ritual are common in
new cultural and geographic situations, and ritual itself often becomes not merely a means of social
identification and cohesion, but a practical tool in processing change - in the context of immigration, in
learning to live in a new community. St. John's is a lively and historic city and while Muslim
immigrants may be a small group within it they nevertheless contribute to the city's energy and
atmosphere. This thesis endeavours to better understand the life stories of ten of these newcomers to St.
John's, focusing on their religious backgrounds and lives. In particular, this thesis seeks to better
understand the place of prayer in the immigrant experience.