identifier: Wadden, Katie Patricia <https://research.library.mun.ca/view/creator_az/Wadden=3AKatie_Patricia=3A=3A.html>   (2010) Recovery from neuromuscular fatigue following plyometric and resisted squat exercises to exhaustion.  Masters thesis, Memorial University of Newfoundland.

abstract: The purpose of this study was to investigate the recovery from neuromuscular fatigue following plyometric and resisted squat exercises performed to exhaustion. Previous research has shown that recovery from neuromuscular fatigue is dependent on training status of the subject and the time, type and intensity of the exercise performed. In spite of this finding, the recovery period prescribed for plyometric training is similar to that of slow movement resisted exercise training. Plyometric and resisted squat exercises utilize a unique yet natural movement known as the stretch-shortening cycle (SSC), however due to the differing movement velocities of the exercises, the nature of the SSC performed is very different. This difference is believed to impose distinctive mechanical and neural stresses on the musculoskeletal system. Ten moderately trained subjects and four highly trained subjects completed two SSC trials to exhaustion. Subjects performed continuous drop jumps from a 30 cm platform during the plyometric trial and continuous squats with a load of 65% of their one-repetition maximum during the resisted squat trial. There was no difference in the neuromuscular recovery response following plyometric and resisted squat exercises performed to exhaustion. However, the duration of the plyometric trial was dependent on the training status of the subject; highly trained (HT) subjects (athletes who trained for their sport for 6 or more hours a week) (68.2%) than the moderately (MT) subjects (individuals who participated in 3 or more hours of physical activity a week) and the duration of the plyometric trial was significantly longer (67.1%) than resisted squat trial for the HT subjects. The duration of the trials did not differ for the MT subjects. Changes in neuromuscular properties following plyometric and resisted squat trials to exhaustion are independent of the type of exercise, duration of the trial and training status of the subject.


identifier: Hall, Norma Jean <https://research.library.mun.ca/view/creator_az/Hall=3ANorma_Jean=3A=3A.html>   (2009) Northern arc : the significance of the shipping and seafarers of Hudson Bay, 1508-1920.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

type: Thesis NonPeerReviewed

abstract: This dissertation depicts maritime activity as a lived aspect of human experience essential to history in, and of, the Canadian North; to historical process in Canada as a whole; and to the history of development in Western Canada in particular, because the North was the site of maritime ingress to the Canadian West. The thesis addresses three misapprehensions about seafaring activity and Hudson Bay. First, that the volume of shipping in the Bay and associated waters from 1508 to 1920 was too low to warrant study; second that Hudson's Bay Company voyages were merely economic linkages; and third that communication between ship and shore was limited and straightforward. I examine the contextual aspect of sailors' experiences - temporally, geographically, and technologically - describing the distinctiveness of Company ships, routes, and sailors. I find that sea ice, as a natural feature, was a primary determinant of maritime work, the pacing of work routines, and the timeframe of voyages in the past. I demonstrate that, as agents of diverse backgrounds with varied personal paths who actualized intercontinental transportation, integration, and exchanges of people, goods, and ideas, the sailors were harbingers and makers of change and continuity in history. Appreciating the cumulative effect of past commerce, communication, and ideas requires thinking beyond shorelines and taking the people who affected traverses of sea space into account. The journeys of seafarers, as well as their destinations, have relevance to histories of development.


identifier: Choe, Nami <https://research.library.mun.ca/view/creator_az/Choe=3ANami=3A=3A.html>   (2008) Population dynamics and life history characteristics of boreal appendicularian species in Conception Bay, Newfoundland, Canada.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: The primary goal of this study was to investigate the population dynamics and life history traits of boreal appendicularian species in Conception Bay, Newfoundland. Specific questions were; (1) What are the optimum environmental conditions for appendicularian species? (2) What are their generation time, and growth and secondary production rates? (3) How do length-at-age, age-at-maturity and fecundity vary under seasonally fluctuating environmental conditions and how do these demographic parameters relate to population growth rate? In order to study life history and demographic traits of naturally occurring populations of appendicularians, it was necessary to develop an in situ method of age determination. --  The temporal and spatial niche of appendicularian species is defined primarily by temperature and salinity in which Oikopleura vanhoeffeni is a cryophilic, stenothermal and stenohaline species, Fritillaria borealis typica is eurythermal and euryhaline and Oikopleura labradoriensis is mesothermal and mesohaline. Throughout the year, more than 70 % of the individuals of each species were present above 100 m, indicating that a majority of them experienced seasonal variation in abiotic and biotic factors. -- The presence of lipofuscin in the brain tissue, growth rings on the statolith and statolith diameter were explored as age indicators for appendicularians. The results indicated that statolith diameter was a feasible and reliable age indicator. A laboratory study of statolith diameter and somatic growth in O. vanhoeffeni showed that variability in statolith diameter-at-age was substantially lower than that in trunk length-at-age, and that variability in statolith-at-age remained constant with age whereas variability in trunk length-at-age increased with age, suggesting that statolith diameter should be a better in situ indicator of age than body size. Using statolith diameter as a proxy for age, trunk length-at-age of O. vanhoeffeni and O. labradoriensis in Conception Bay varied seasonally depending on food type and concentration, indicating that conventional decomposition of cohorts from trunk length frequency distributions would lead to inaccurate estimation of age structure and thus population growth rates. -- Based on age structures represented by statolith diameter, the generation time of O. vanhoeffeni was one year and that of O. labradoriensis was between 8 months and one year. Somatic growth in both species was exponential,  suggesting the absence of food-limitation and that there was no apparent energetic trade-off between growth and reproduction. Somatic growth rate of both species (mass basis) ranged from 0.007 to 0.043 d⁻¹. House production rate far exceeded somatic production in terms of carbon. The annual sum of somatic and house production of both oikopleurid species was equivalent to 49 - 95 % of mesozooplankton production and 3.8 - 7.3 % of primary production in Conception Bay. -- Age-at-maturity of O. vanhoeffeni and O. labradoriensis increased over winter and spring as temperature decreased, while size-at-maturity and potential fecundity increased to a maximum during the spring diatom bloom. The population growth rate of O. vanhoeffeni peaked in spring as age-at-maturity and fecundity increased whereas the population growth rate of O. labradoriensis peaked in the fall when age-at-maturity and fecundity decreased. Thus, O. vanhoeffeni has a life history strategy based upon maximization of clutch size and O. labradoriensis has a life history based upon maximization of population turnover rate. Thus, the appendicularian tunicates appear to have multiple adaptations promoting niche separation including temporal segregation, different optimum temperature and salinity and differing life history adaptations, particularly involving variability in age and size-at-maturity and in individual fecundity.


identifier: Bowden, David <https://research.library.mun.ca/view/creator_az/Bowden=3ADavid=3A=3A.html>   (2010) On Quirky oblique subjects and ECM complementation in Icelandic.  Masters thesis, Memorial University of Newfoundland.

abstract: The syntactic position occupied by ECM complements is highly debated in the literature with no definitive answer currently available. This is problematic since the unknown nature of the position obscures our understanding of a universal theory of syntax. This thesis examines the debate through the lens of the Icelandic language which exhibits a cross-linguistically rare phenomenon termed Quirky Case, or Aukafallsfrumlag in Icelandic scholarship, whereby speakers can employ oblique forms in subject position. This mismatch of morphological case and grammatical function, evident in the Icelandic language, is therefore an ideal environment within which to explore the contested nature of exceptionally case marked nouns. It will be shown that there are certain height constraints associated with Quirky vs. non-Quirky ECM movement. By unifying the notions of Quirky case, Object Shift, and Exceptional Case Marking, novel insight into the universal relationship between case and syntactic position will be made - shedding more light on the illusive nature of the ECM complement position.


identifier: Gupta, Santosh K. (Santosh Kumar) <https://research.library.mun.ca/view/creator_az/Gupta=3ASantosh_K=2E_=28Santosh_Kumar=29=3A=3A.html>   (2009) Molecular dynamics of a respiratory protein fragment in phospholipid monomolecular films.  Masters thesis, Memorial University of Newfoundland.

abstract: Molecular dynamics simulations of the fragment Mini-B of Surfactant Protein B were carried out in the NVT ensemble for simulation times ranging from 20 ns to 80 ns. These simulations were performed in DPPC:POPG monolayers and POPG monolayers at different cross-sectional areas per lipid, varying the initial depth and orientation of the peptide. Analysis was carried out to determine what depth the peptide can attain in the monolayers towards the end of the simulations. Secondary structure of the peptide was also examined, and it was found that in the majority of cases both alpha helices remained alpha helical to a reasonable degree in the monolayers. The tilt angles of the alpha helices of Mini-B in the DPPC:POPG monolayers seemed to show relatively small deviations from those of the corresponding structure determined in SDS micelles by NMR, provided that the peptide was placed at a low enough depth. A study was also performed to determine the effect of sodium ions on the interaction between the cationic Arginine and Lysine residues of Mini-B and the anionic phosphate headgroups of POPG.


identifier: Hynes, Abigail April <https://research.library.mun.ca/view/creator_az/Hynes=3AAbigail_April=3A=3A.html>   (2008) Negotiating the political minefield of English language arts: a critical perspective.  Masters thesis, Memorial University of Newfoundland.

abstract: In 2001, senior high English Language Arts (ELA) teachers in Newfoundland and Labrador witnessed the introduction of a new ELA curriculum that, to many, was viewed as a dramatic shift in theory, content, and methodology. However, a review of the history of education and the teaching of English (in Newfoundland and Labrador as well as globally) reveals that, while much remains the same, there have been continual reformulations of ELA programs since the inception of English as a subject in the nineteenth century. To better understand the most recent incarnation of the ELA program, it may be beneficial for teachers not only to review the history of English as a subject (see Chapter One) and of education in Newfoundland and Labrador (see Chapter Two) which reveal the political and ideological nature of "English teaching," but also to consider the diverse cultural, economic, and social dynamics that exist in Newfoundland and Labrador (see Chapter Three) which may provide insight about where our students are coming from, what they need, and where they hope to go. From here, an examination of current ELA Foundation and curriculum documents (see Chapter Four), which reflect the most recent modifications to the delivery of ELA programs, will uncover the remnants of earlier formulations of the subject as well as the existence of contending, and often contradictory, ideological forces that continue to influence and be influenced by the study of ELA. There are no simple answers (nor should there be) to the overwhelming problems of attempting to resolve the contradictions in the curriculum documents; to meet the needs of our students' diverse, complex, and hybrid identities; and to reconcile the contending ideological forces that pervade our classrooms. Yet, we must not concede helplessness nor plead ignorance. Facilitating awareness, in ourselves and our students, becomes the first step in meeting these challenges head on and working towards an ELA program that is more democratic and beneficial to all our students (see Chapter Five).


identifier: Rageh, Osama. <https://research.library.mun.ca/view/creator_az/Rageh=3AOsama=2E=3A=3A.html>   (2008) Removal of arsenic from Newfoundland water using impregnated peat.  Masters thesis, Memorial University of Newfoundland.

abstract: Arsenic exists naturally and it is the 20th most abundant element in the earth's crust. The high Arsenic concentration in some of Newfoundland water sources could be due to the oxidation of Arsenic bearing minerals by the heavy precipitations and rain fall all over the year. Arsenic is carcinogenic and the United States Environmental protection agency and the Canadian Environmental Quality Guidelines limit set is 10 μg/l of Arsenic in drinking water. The main objective of this research was to find a cheap, efficient, and locally available material in Newfoundland that could remove Arsenic from water. Peat is an abundant material in Newfoundland, however, functional groups, which are the main constituent of peat do not react with Arsenic species. To improve peat properties, Fe was used to impregnate peat, react with the functional groups, get oxidized, and the impregnated Fe hydroxide and oxyhydroxide could then adsorb Arsenic. To detect the properties of horticultural peat, characterization tests were carried out for the untreated and impregnated peat. In addition, batch and column studies were conducted to test the peat capacity for Arsenic adsorption before and after impregnation. It was found that peat impregnated with 0.54 M ferrous chloride (Fe 0.54-Peat) was the best adsorbent and it could reduce the Arsenic level from 60 μg/l to less than 10 μg/l. A total of 9 liters were treated with Fe 0.54-Peat in a continuous flow system to a level below this one. The pH increased with the duration of the experiments, as conditions gradually become more reducing and the pH was the main factor controlling the Arsenic adsorption between pH 3 to 5. The two suggested mechanisms responsible for adsorption are inner sphere complex and coadsorption or a mix between ion exchange and complexation.


identifier: Penny, Lana Elizabeth <https://research.library.mun.ca/view/creator_az/Penny=3ALana_Elizabeth=3A=3A.html>   (2007) Performance criteria and ratings in rubrics for evaluating learning in online asynchronous discussions.  Masters thesis, Memorial University of Newfoundland.

abstract: The purpose of this study was to identify performance criteria and ratings in rubrics designed for the evaluation of learning in online asynchronous discussions (OADs) in post-secondary contexts and compare them to behaviors that researchers have focused on in context of transcript analyses of OADs. We analyzed rubrics collected from internet sources. Using purposive sampling, we reached saturation by the selection of 50 rubrics. Using keyword analysis and subsequent grouping of keywords into categories, we identified categories of performance criteria and ratings and compared these with the behaviors highlighted in the literature on transcript analysis of OADs. -- The analysis led to the identification of 153 performance criteria in 19 categories and 831 ratings in 40 categories. We subsequently identified four core categories: (i) Cognitive (44.0% of total performance criteria and ratings); (ii) Mechanical (19.0%); (iii) procedural/Managerial (18.29%); and (iv) Interactive (17.17%). Criteria and ratings assess: (a) thinking skills (cognitive core category); (b) learners' participation in the forum (procedural/managerial core category); (c) learners' interactions with others (Interactive core category); and (d) mechanical aspects of writing (mechanical core category). We found congruence between the literature and the rubrics' emphasis on thinking skills and no congruence with the rubrics' emphasis on mechanics. We found little evidence that the rubrics assess social presence.


identifier: Hossain, Mirza M. Rashed <https://research.library.mun.ca/view/creator_az/Hossain=3AMirza_M=2E_Rashed=3A=3A.html>   (2010) Removal of impurities from electrolyte solution to produce pure metals.  Masters thesis, Memorial University of Newfoundland.

abstract: The impurities present in the electrolyte solution not only deteriorate the quality of the metal product, but also may have large impact on the overall process efficiency. Therefore, solution purification before electrowinning process is an essential step for the metal to be electrowon. In this study, cobalt electrolyte solution was purified to produce pure cobalt and to improve process efficiency. A solvent extraction (SX) method has been examined to remove impurities such as manganese (Mn) and cadmium (Cd) from a cobalt electrolyte solution in a laboratory scale batch wise test work using modified D2EHPA (Di-2-ethylexhyl phosphoric acid). The organic reagent D2EHPA is an organophosphorous acidic extractant, which has an affinity to extract and remove metals from the electrolyte solution. The real cobalt electrolyte solution collected from Vale Inco's demo plant at Argentia has been used in this experiment. -- By the SX method, metals were selectively removed from the cobalt electrolyte solution using modified D2EHPA, after converting its functional group with Na⁺ or Co²⁺ ions. The distribution ratio and separation factors were the key measures, in this experiment, to selectively remove the impurity metals from the cobalt electrolyte solution, and the separation of metals was greatly dominated by the equilibrium pH of the solution. It was found that D2EHPA modified by Co²⁺ was more favorable for controlling the pH of the solution. The concentration of organic extractant and the equilibrium pH of the solution were the important parameters to selectively remove the impurities from the cobalt electrolyte solution. A kinetic study was carried out showing the equilibrium position (rate of transfer of metals) between two phases. The stripping of metals from the loaded organic extractant was conducted using different concentrations of sulphuric acid (H₂SO₄). Finally, a fixed concentration of H₂SO₄ was used for the stripping of the metals of interest. Mn and Cd were stripped with same concentration of H₂SO₄ which was the added benefit for the process. The kinetics for the extraction of Mn and Cd observed in the study were also found to be similar. -- The screening tests with different ion exchange resins were also investigated in this study, to selectively remove manganese and other impurities. It was found that, among others, Amberjet 4400 CL followed by Amberlite IRC 7481 and Lewatit TP-207 are suitable resins for the extraction of manganese and cadmium from a cobalt electrolyte solution.


identifier: Greene, Michael G. <https://research.library.mun.ca/view/creator_az/Greene=3AMichael_G=2E=3A=3A.html>   (2008) Multiple generations of dolomitization in the catoche formation of Port au Choix, Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract: The Catoche Formation of the St. George Group in the Port au Choix area consists of about 123 m of limestone overlain by 38 m of dolostone. Deposited on a shallow carbonate platform in subtidal to peritidal settings, the upper 38 m of the Catoche Formation has undergone multiple phases of dolomitization. A fabric-retentive micritic dolomite (D1) replaces limemuds. The preservation of mud laminae and near-micritic grain size implies that dolomitization began early after deposition. Dolomite 2 (D2) replaces peloidal packstone/grainstone and wackstone and exhibits two ranges of crystal sizes, subhedral to euhedral crystals that range from 50 to 120 μm and anhedral to euhedral crystals that range between 150 to 250 μm. Crystals belonging to D2 commonly have cloudy Fe-rich cores with clear Fe-free rims. Locally crystals have well developed faces and are associated with abundant intercrystalline porosity suggesting a limited supply of Mg⁺² at the time of dolomitization. Overprinting early dolomite generations is a locally developed stylolite-related dolomite (D3). Crystals round along stylolites are generally subhedral to euhedral and range in size from 70 to 150 μm. A replacement and pore-filling euhedral to sometimes anhedral dolomite (D4) commonly occludes vugs and typically may reach several millimeters in size. Rare saddle-dolomites (D5), 300 to 600 μm in size, exhibit sweeping extinction and tend to occlude biomolds, veins but rarely lines vugs. -- Trace element distribution shows an increase of Sr with depth for D1 and D2 suggesting a possible downward movement of the early dolomitizing fluids for the respective dolomite generations. Dolomite 1 has a Sr/Ca molar ratio that ranges from 0.0037 and 0.00094 suggesting an origin from a mixed meteoric/seawater source. Stable isotopes calculations yield a range of -10.7 to -6.4‰ SMOW and agree with a mixed meteoric/seawater source for the earliest dolomitizing fluid. Microthermometric measurements recorded from D4 indicate a temperature of formation ranging from 89.2 to 99.5°C suggesting deposition at significant depth. Oxygen isotope signatures for the dolomitizing fluid associated with D4 yield a range from -1.2 to 2.4‰ SMOW and suggest an origin derived from evolved diagenetic waters.


identifier: Sun, Zhao <https://research.library.mun.ca/view/creator_az/Sun=3AZhao=3A=3A.html>   (2009) Reproductive biology of deep-sea soft corals in the Newfoundland and Labrador region.  Masters thesis, Memorial University of Newfoundland.

abstract: This research integrates processing of preserved samples and, for the first time, long-term monitoring of live colonies and the study of planula behaviour and settlement preferences in four deep-sea brooding octocorals (Alcyonacea: Nephtheidae). Results indicate that reproduction can be correlated to bottom temperature, photoperiod, wind speed and fluctuations in phytoplankton abundance. Large planula larvae are polymorphic, exhibit substratum selectivity and can fuse together or with a parent colony. Planulae of two Drifa species are also able to metamorphose in the water column before settlement. This research thus brings evidence of both the resilience (i.e., extended breeding period, demersal larvae with a long competency period) and vulnerability (i.e., substratum selectivity, slow growth) of deep-water corals; and open up new perspectives on experimental studies of deep-sea organisms.


identifier: Wiens, Kathleen Ruth <https://research.library.mun.ca/view/creator_az/Wiens=3AKathleen_Ruth=3A=3A.html>   (2008) Music and politics in the Croatian-Canadian community.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis explores musical performance in an Ontario-based Croatian-Canadian community in the early 21st century. It assumes that since such performances both reflect social values and help to constitute them, musical activity then serves to negotiate identity. -- The 1990s saw the breakup of and subsequent armed conflict between the states of the former Yugoslavia. This time of political and violent struggle impacted Croatian diaspora communities: nationalist rhetoric of the homeland resonated with and was promulgated throughout the diaspora in Canada. Over 15 years have passed since Croatian independence, yet diaspora activities continue to invoke references to nationalist themes. Why is this so? -- Examining community musical activities raises a number of questions: Where do nationalist themes appear? What forms do they take? Why are these choices made, who makes them, and to what end? Case examples of musical performance include a 2006 folklore festival and a homeland folklore performance tour, supplemented by data from Internet discussion room postings (an important setting where alternative and dissenting viewpoints may be expressed in an anonymous fashion). -- The study finds that nationalist themes are welcome if not encouraged in certain circumstances. In cases where such themes appear, notions of "Croatianness" ("being Croatian") draw from the 1940s Independent State of Croatia and ultra-nationalist movements of the 1990s, including symbols and references pertaining to the maintenance of a perceived "enemy," selective tellings and interpretations of history and culture, and glorification of war criminals. I have found that such themes are often part of community activity as efforts to portray a homogenous or united understanding of what it means to be "Croatian" and thereby alleviate perceived threats posed by discord within the community and assimilation into mainstream Canadian society.


identifier: Sekaran, Kamini Kousalya <https://research.library.mun.ca/view/creator_az/Sekaran=3AKamini_Kousalya=3A=3A.html>   (2008) Power system state estimation.  Masters thesis, Memorial University of Newfoundland.

title: Power system state estimation

abstract: Monitoring and control of a complex interconnected power system requires the accurate estimate of its states. Different meters are placed at the various substations and the measurements are transmitted to the central control center. However, it is likely that there may be errors associated with the measurements and in some cases, some measurements may not be available. Power system state estimation is a technique by which the state of a power system (usually magnitude and angle of bus voltages) is determined using raw measurements. The results of the state estimation are used for realtime security analysis, optimal power flow, etc. These are also used in calculating the line power flows between buses, by which the system operators will be able to conclude if any line is overloaded, and then take necessary action to prevent any mishap from happening. In the initial part of this thesis, State Estimation (SE) based on Weighted Least Squares (WLS) technique and bad data detection, identification, and elimination are presented. The bad data detection and identification are facilitated by the chi-squared test and normal residual methods. The WLS, chi-Squared test and normal residual methods are implemented in Matlab and tested using different power system models. Case studies demonstrate that the WLS technique is reliable in estimating state variables of a power system. Chi-squared and Normal residual methods detect and identify bad data efficiently. --  In the second part of this thesis, the transmission line reactance parameter error estimation is formulated and implemented using the residual sensitivity analysis for various power system models. The estimation involves two steps: the error identification and estimation of the parameter implemented using Matlab. The identification of the parameter error is facilitated by the normalized residual technique, and the parameter error estimation is facilitated using the residual sensitivity analysis. The parameters estimated are reliable and close to the actual (true) value. In the final part of this thesis the measurements considered to be available for state estimation are a few synchronized phasor measurements in addition to the conventional measurement data, to enhance the performance of the state estimator, for a very large power system. The phasor measurement, when present in sufficient numbers, with other measurements, improves the accuracy of the SE. Matlab is used to implement multi-area SE using various case studies.


identifier: Langdon, Kristopher D. <https://research.library.mun.ca/view/creator_az/Langdon=3AKristopher_D=2E=3A=3A.html>   (2010) Neuroinflammation and cognitive plasticity following experimental stroke.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Stroke is one of the leading causes of morbidity and mortality in Canada and only relatively few individuals avail of pharmacological treatment. Consequently, most stroke patients are left with permanent disabilities. Post-stroke rehabilitation is beneficial but is often incomplete. Animal models of stroke have helped in our understanding of the mechanisms involved in the recovery of sensorimotor function but little attention has been paid to cognitive impairments, which are common following stroke. -- Importantly, patients with cognitive problems are less likely to be reintegrated into society and benefit less well from rehabilitation. Animal models of ischemia have not demonstrated the lasting cognitive impairments that are apparent in human stroke. In the second chapter of this thesis I describe a cognitive assay that detected long-term (~9 mo) alterations in learning, working and reference memory function following global ischemia. Further, I identified a sustained neuroinflammatory state confined to area CA1 at a protracted time point of 270 days post-ischemia, a time when neuroinflammation is typically thought to have subsided. -- In the third chapter I assessed the impact of increased neuroinflammation caused by systemic inflammation on ischemic outcome. Systemic inflammation 24-hours post-ischemia significantly increased neuroinflammation at 3 days post-ischemia as indicated by increases in microglia/macrophages and infiltrating neutrophils. This resulted in significant increases in functional deficits and infarct volumes assessed 30 days post-ischemia. These results confirm for the first time, that systemic inflammation at such a delayed time point, similar to what occurs in a clinical setting, has a profound impact on ischemic outcome. -- The fourth chapter attempted to develop a post-stroke intervention to enhance cognitive function. A combination of 2 hours of physical activity (wheel running) and 2 hours of cognitive activity (Hebb-Williams maze exposure) significantly improved working memory in normal rats compared with either physical or cognitive activity alone, independent of significant changes in neuronal BDNF or pCREB levels. These results are the first to suggest that cognitive training in rats, when combined with only 2 hours of wheel running, can significantly improve working memory function, a finding that may be useful in developing cognitive rehabilitation strategies following stroke in humans.


identifier: Fleming, Robyn D. <https://research.library.mun.ca/view/creator_az/Fleming=3ARobyn_D=2E=3A=3A.html>   (2009) Robert's Cove I (DjAv-05) : a transitional recent Indian site on the northeast coast of Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract: Robert's Cove I (DjAv-05) is a transitional Beaches/Little Passage site located approximately 1km across the harbour from the town of Triton in Notre Dame Bay. The site was originally discovered in 1987 by archaeologists Ingeborg Marshall and Marianne Stopp who were surveying the area with archaeologist Gerald Penney. During the 2007 excavation of DjAv-05, which took place from June to August, 66 square meters were excavated, mapped and photographed and 70 artifacts and 3,151 pieces of debitage were recovered. Excavation and analysis of the site focused on dating the site, determining the length of time which the site had been used by the Recent Indians and what activities were occurring here. -- Analysis of the data indicated that the site was used by a Recent Indian group between 780 and 980 AD and that in all probability it was a short duration specialized exploitation camp occupied during warmer weather. In addition to the early dates, examination and comparison of the lithics from DjAv-05 with Beaches and Little Passage assemblages from the island indicate that the site was produced during a transitional period between these Recent Indian cultures. Furthermore, an examination of Beaches and Little Passage sites on the island suggest that the Northeast coast region, where DjAv-05 is located, was of particular importance to both populations.


identifier: Gao, Weihua <https://research.library.mun.ca/view/creator_az/Gao=3AWeihua=3A=3A.html>   (2008) Pulse shape design for ultra wide band communications.  Masters thesis, Memorial University of Newfoundland.

abstract: Ultra Wideband (UWB) technology is promising for high-speed short-range communication applications due to its large bandwidth, high data rate, low power requirement and short-range characteristics. Instead of exploring new unused frequency band, the UWB communication follows the overlay principle. The great potential of UWB lies in the fact that it can co-exist with the already licensed spectrum users and can still pave the way for a wide range of applications. Pulse shape design is a key technique in the UWB system. This thesis concentrates on pulse shaping techniques for UWB communication system. -- This thesis first summarizes the main pulse shaping schemes, and then describes the design of a pulse shaping method based on combining Gaussian derivative pulses for impulse based UWB systems. New pulse shapes are created to satisfy the Federal Communications Commission (FCC) spectral mask by this method. Since the objective function of the received signal-to-noise ratio (SNR) optimization is affected by different factors, multiple parameters are also designed to try to achieve the best received SNR. The performance of new pulses and other frequently used UWB pulses are compared through theoretical calculations and simulations coded in MATLAB. -- The main contributions of this thesis include the new determined way of combining certain numbers of Gaussian derivative pulses to create a single pulse that not only conforms to the FCC spectral mask, but also effectively exploits the permitted frequency spectrum, as well as the development of an end-to-end UWB signal transmission simulation chain that can use Time Hopping Pulse Position Modulation (TH-PPM) modulation and Time Hopping Binary Phase Shift Keying (TH-BPSK) modulation through an Additive White Gaussian Noise (AWGN) channel and the IEEE 802.15.3a standard channel model. -- Comparisons have been done of the overall performance of the systems using different pulses in various scenarios such as: single link system use AWGN channel and IEEE standard channel and multiuser system using AWGN channel and IEEE standard channel. In order to exploit the temporal diversity of the multi-path IEEE channel to improve performance of the decision process, a perfect RAKE receiver simulation model is used in the simulation chain. The theoretical calculation and simulation results indicate that the proposed pulses outperform other pulses to different extents under different situations. Discussions on the implementation issues of the pulse shaper are also provided in this thesis. -- The work reported here could act as a starting point from which improvements and extensions can be made and incorporated.


identifier: Manzer, Joshua Daniel Adrian <https://research.library.mun.ca/view/creator_az/Manzer=3AJoshua_Daniel_Adrian=3A=3A.html>   (2008) Perfect T(G) triple systems when G is a matching.  Masters thesis, Memorial University of Newfoundland.

abstract: A T(G) triple is formed by taking a graph G and replacing every edge with a 3-cycle, where all of the new vertices are distinct from all others in G. An edge-disjoint decomposition of 3Kn into T(G) triples is called a T(G) triple system of order n. If we can decompose Kn into copies of a graph G, such that we can form a T(G) triple from each graph in the decomposition and produce a partition of the edges of 3Kn, then the resulting T(G) triple system is called perfect. -- We give necessary and sufficient conditions for the existence of perfect T(G) triple systems when G is a matching with λ edges, which we denote by ⋃λP₂. We then give cyclic perfect decompositions of 3Kn into T(⋃λP₂) triples for all n ≡ 1 (mod 2λ) when λ is even (except for n = 4λ + 1 when λ > 8) as well as completely solve the case λ = 3.


identifier: Vivanco, Claudia <https://research.library.mun.ca/view/creator_az/Vivanco=3AClaudia=3A=3A.html>   (2009) Optimization of an acid digestion for HFSE analyses using ICP-MS: application to the assessment on environmental mobility of HFSE and REE in iron ore tailings.  Masters thesis, Memorial University of Newfoundland.

abstract: A method to optimize an acid digestion procedure for High Field Strength Elements (HFSE) was developed, using mine tailing samples of variable ages (0-10 years old), provided by Iron Ore Company of Canada (IOC). The study included experiments that aimed to find the optimal length of digestion to obtain improved recoveries for HFSE. Different acid mixtures were tested in an attempt to accomplish better digestion of the samples, and to obtain a more stable solution. For the purpose of this research, a stable solution is defined as a solution that would maintain analytes in solution over time. This study concluded that the initial parameters of the acid digestion procedure were the most effective. -- The method development generated large data sets for the elements determined using this procedure. These data were analyzed to assess the environmental mobility of HFSE and REE in the samples. Samples had low concentrations of HFSE and Rare Earth Elements (REE) elements (i.e, Zr 5 ppm, Nb 1.7 ppm, Hf 0.1 ppm, etc). These tailing samples were exposed to weathering since their generation and stored in a dump, located in Labrador. The mobility investigation consisted of exhaustive comparisons of sample elemental concentrations plotted according to their ages. Unexpected variations, suggested the use of different ores or gain/loss of mass that would concentrate/dilute these elements. To understand these variations, sample concentrations were normalized, displaying parallel trends similar to igneous or sedimentary rocks. From these observations, it was concluded that HFSE or REE were not selectively affected during weathering and ores with common HFSE and REE characteristics were used.


identifier: Hollett, Joshua W. <https://research.library.mun.ca/view/creator_az/Hollett=3AJoshua_W=2E=3A=3A.html>   (2009) Properties and applications of the average interparticle distance.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: The first and second moment operators are used to define the origin invariant shape and size of a molecule or functional group, as well as expressions for the distance between two electrons and the distance between an electron and a nucleus. The measure of molecular size correlates quite well with an existing theoretical measure of molecular volume calculated from isodensity contours. Also, the measure of size is effective in predicting steric effects of substituents which have been measured experimentally. The electron-electron and electron-nuclear distances are related to components of the Hartree-Fock energy. The average distance between two electrons models the Coulomb energy quite well, especially in the case of localized molecular orbitals. The average distance between an electron and a nucleus is closely related to the electron-nuclear attraction energy of a molecule. -- The relationships discovered between the average interparticle distances and molecular energy components have led to the development of a new empirical approach to modelling the electronic structure of molecules. The general energy expression for a simulated electronic structure theory is defined, along with the functional form of the interatomic distance dependent energy functions. The theory is used to model the hydrogen molecule, the first-row hydrides, and ethane. The models, which have the correct RHF/6-31G(d) optimized geometries, also fit the RHF/6-31G(d) energy at equilibrium and the UHF/6-31G(d) energy at the bond dissociation limit, as well as some vibrational frequencies. -- Also directly related to the interelectronic distance, is the issue of electron correlation.  Several new approaches to the electron correlation problem have emerged in recent years. Among the new methods is orbital functional theory, in which the correlation energy is a functional of the molecular orbitals. The correlation energy of different isoelectronic series as a function of nuclear charge is investigated in an effort to design a correlation operator. Insight is also gained by examining the explicit CISD energy expression.


identifier: Gardner, Matthew Hunt <https://research.library.mun.ca/view/creator_az/Gardner=3AMatthew_Hunt=3A=3A.html>   (2010) Oat and a boat : diphthongs and identity in post-industrial Cape Breton.  Masters thesis, Memorial University of Newfoundland.

abstract: The following paper examines the use of /aʊ/ variation by high school age speakers in Industrial Cape Breton, on Canada's east coast - a community undergoing rapid social change and for which there exists a stigmatized local vernacular. I suggest that these high school students construct their individual and group identities with reference to local norms and broader archetypes from popular culture. Through an qualitative ethnographic and quantitative sociophonetic investigation of Riverview Rural High School, this paper examines the sociolinguistic realities of archetypal social groups like "jocks" (i.e. keepers of the institution), "burnouts" (i.e. rebels against the institution), and "nerds" (i.e those that define themselves as neither of the two), which appear consistently in both sociolinguistic enquiries and public/popular representations of high school culture. -- In Cape Breton, the standard Canadian pronunciation of /aw/ before tautosyllabic voiceless consonants (i.e. with a mid-central nucleus) competes with both a traditional and an incoming form (with a mid-back and a mid-front nucleus, respectively) (cf. Chambers, 1973; 2006; Hung et  al. 1993; Boberg, 2008). My hypothesis marks self-identified "cafeteria people", similar to Eckert's (1989; 2000) "jocks", as the leaders in the use of the incoming or the standard /aw/ pronunciation. "Cafeteria people" and "smokers" (similar to Eckert's "burnouts") are the most significant and numerous of the various social groups at Riverview. They also represent the two extremities of the social spectrum at the school. A small group of "nerds" (cf. Bucholtz, 1999) at the school are the self-professed "gamers", who brag about their enjoyment of non-mainstream culture and disinterest in broad or mainstream cultural practices. -- A multivariate analysis of data (N=1080) taken from sociolinguistic interviews with 18 students, stratified by gender and three social groups, and coded for both social and linguistic factors, shows the "gamers" leading the use of the standard Canadian form and "smokers" and males leading the use of the incoming non-standard form, while the "cafeteria people" and women defy sociolinguistic expectations and lead the use of the traditional nonstandard form.


identifier: Yang, Qingyong <https://research.library.mun.ca/view/creator_az/Yang=3AQingyong=3A=3A.html>   (2007) Numerical solution of 2-D slamming problem with a CIP method.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis presents numerical solutions of the slamming problem for 2-D sections entering calm water. The highly nonlinear water entry problem governed by the Navier-Stokes equations was solved by a Constrained Interpolation Profile (ClP)-based finite difference method on a fixed Cartesian grid. In the computation, the CIP method was employed for the advection calculations and a pressured-based algorithm was applied for non-advection calculations. The free surfaces and the body boundaries were captured using color functions. For the pressure calculation, a Poisson-type equation was solved at each time step by the Conjugate Gradient (CG) iterative method. Validation studies have been carried out for wedges with various deadrise angles and for a bow flare section. Pressures, free surface elevations and hydrodynamic forces were compared with experimental results and numerical solutions by the boundary element method (BEM), the volume of fluid (VOF) method, and the smoothed particle hydrodynamics (SPH) method.


identifier: Dubey, Pratibha. <https://research.library.mun.ca/view/creator_az/Dubey=3APratibha=2E=3A=3A.html>   (2010) Regulation of lipid metabolism and oxidative stress in BioF1B hamsters : a comparison of fish oil and seal oil rich diets.  Masters thesis, Memorial University of Newfoundland.

abstract: Dietary supplementation of fish oil has been associated with reduced risk of cardiovascular disease. However, previous studies from our lab showed severe hyperlipidemia and elevated oxidative stress levels in BioF1B hamsters fed 20% (w/w) fish oil supplemented diet. BioF1B hamster, an inbred strain from Bio87.2 and Bio1.5 parent strains, is an animal model for diet induced hyperlipidemia and atherosclerosis. BioF1B hamsters have significantly lower post-heparin lipoprotein lipase (LPL) activity as compared to Golden Syrian hamsters, which is further reduced in response to 20% (w/w) fish oil diet. Reduced LPL activity in BioF1B hamsters is believed to interfere with the clearance of chylomicron-like particles and thus responsible for fish oil induced hyperlipidemia. In the present study we compared the effects of two ω-3 PUFA-rich sources, fish oil and seal oil, on regulation of lipid metabolism and oxidative stress in BioF1B hamsters. The two marine sources of ω-3 PUFA differ in the intramolecular distribution of ω-3 PUFA on their triglyceride (TG) molecules. While EPA and DHA are primarily located in sn-2 position in fish oil TG, these are distributed in sn-1 and sn-3 positions in seal oil TG. Fish oil and seal oil further differ in their fatty acid composition with significantly higher levels of DP A and MUFA in seal oil as compared to fish oil. We hypothesized that BioF1B hamsters will be able to tolerate seal oil better than fish oil due to differences in positional distribution of ω-3 PUFA in TG molecule as well as differences in the fatty acid composition. Moreover, increased resistance to oxidation has been reported with seal oil. Significantly lower plasma and liver lipid levels were observed with 20% (w/w) seal oil fed BioF1B hamsters as compared to 20% (w/w) fish oil fed BioF1B hamsters. RT-PCR analysis showed significantly reduced SREBP-1cmRNA expression levels in seal oil fed hamsters which can partially explain the suppression of lipogenesis in response to dietary seal oil compared to fish oil. Seal oil fed BioF1B hamsters also showed significantly lower plasma and liver TBARS levels, thus suggesting reduced oxidative stress relative to fish oil fed hamsters. Since fish oil fed hamsters showed elevated levels of oxidative stress, we wanted to investigate possible beneficial effects of antioxidant supplementation in hamsters fed high fat diets. Berry extract rich in anthocyanins has gained prominence as a potent antioxidant in recent years. Study of the role of  anthocyanin enriched (25% w/w) elderberry extract supplementation on plasma lipid levels in marine oil fed BioF1B hamsters also revealed significant reduction in all plasma lipid parameters upon addition of elderberry extract to respective marine oil fed BioF1B hamsters. While cosupplementation with elderberry extract resulted in significantly lower hepatic total cholesterol and cholesterol ester concentrations in both fish oil and seal oil fed BioF1B hamsters, reductions in hepatic TG and free cholesterol levels was seen in fish oil fed group alone. Moreover, both plasma and hepatic TBARS levels showed significant reductions upon elderberry extract supplementation in fish oil fed BioF1B hamsters. Thus, current findings suggest that seal oil may confer greater benefits compared to fish oil in lowering lipid and oxidative stress levels under certain genetic conditions. Furthermore, co-supplementation of fish oil with anthocyanin enriched elderberry extract may be beneficial under these conditions than fish oil alone.


identifier: Haslett, Michael Roland <https://research.library.mun.ca/view/creator_az/Haslett=3AMichael_Roland=3A=3A.html>   (2009) Proline catabolism in liver.  Masters thesis, Memorial University of Newfoundland.

title: Proline catabolism in liver

abstract: The goal of this work was to localize one of the enzymes involved in proline oxidation, ∆¹-pyrroline-5-carboxylate dehydrogenase (P5CDh) and to gain an understanding of the factors affecting proline catabolism in rat liver. In this regard we performed a systematic subcellular localization for P5CDh and studied proline catabolism in response to dietary protein and exogenous glucagon. Our results indicate that P5CDh is located solely in mitochondria in rat liver. With respect to factors affecting proline catabolism we observed that rats fed a diet containing excess protein (45% casein) display a 1.5 fold increase in activity of P5CDh and proline oxidase (PO), and a 40% increase in flux through the pathway resulting in complete oxidation of proline in isolated mitochondria. We also observed that rats administered exogenous glucagon exhibit a 2 fold increase in PO activity and a 1.5 fold increase in P5CDh activity, and a 2 fold increase in flux through the pathway resulting in complete oxidation of proline in isolated mitochondria. ¹⁴CO₂ production from ¹⁴C-proline in the isolated nonrecirculating perfused rat liver was also elevated 2 fold in the glucagon treated rat. We also studied the transport of proline into isolated hepatocytes and observed a 1.5 fold increase in the transport of proline in rats given exogenous glucagon. -- Conclusions: -- Subcellular localization: -- (a) The spectrophotometric assay is valid and provides a quick, easy method for assays of P5CDh -- (b) P5CDh is located strictly in the mitochondrial matrix. -- High protein diet increases: -- (a) flux through the proline catabolic pathway in mitochondria resulting in the production of CO₂ -- (b) activity of PO, P5CDh, and ornithine aminotransferase (OAT) in rat liver mitochondria -- Glucagon increases: -- (a) proline transfer from plasma to hepatocytes -- (b) oxidation of proline by perfused liver -- (c) flux through the proline catabolic pathway resulting in the production of CO₂ -- (d) activity of PO, P5CDH and glutamate dehydrogenase (GDH) in rat liver mitochondria


identifier: Kandler, Renate Anna <https://research.library.mun.ca/view/creator_az/Kandler=3ARenate_Anna=3A=3A.html>   (2009) Religious belief in the thought of Sir Arthur Stanley Eddington.  Masters thesis, Memorial University of Newfoundland.

abstract: Sir Arthur Stanley Eddington (1882-1944) was a distinguished British scientist and committed Christian. Where many see science and religion as two separate and incompatible universes of discourse Eddington developed a way to conceive of them as complementary and compatible. He maintained that science addresses the measurable world and spirituality addresses the unseen world. Both find their source in the divine and are rooted in beauty, truth and especially experience. In this thesis Eddington's religious thought is compared and contrasted with Rudolf Otto's concept of the numinous in order to bring out the structure and depth of Eddington's thinking. Eddington, in fact, tapped into the essential core of all religions: religious experience. For Eddington this is mystical communion with the divine, or as Otto would say, the 'numen praesens.' Eddington unites aesthetic, scientific and spiritual aspects of existence in a way that promotes religious and scientific freedom. Moreover, in seeking fulfillment and purpose in life Eddington breaks down traditional religious boundaries and promotes freedom of exploration, and this gives added depth to his religious thought.


identifier: Adibi asl, Hadi. <https://research.library.mun.ca/view/creator_az/Adibi_asl=3AHadi=2E=3A=3A.html>   (2009) Preview active suspension design for convoy vehicles.  Masters thesis, Memorial University of Newfoundland.

abstract: Convoy vehicles, defined as individual vehicles traveling with close following distances on a specified path, have been recently the subject of research especially in military applications. Convoy vehicles are used to carry soldiers, weapons and army supplements. Military drivers are often young and inexperienced, and more prone to lose control of vehicles on rough terrain. In addition, Intelligent Vehicle Highway Systems with autonomous civilian vehicles travelling in platoons are an active research and experimentation topic. -- The idea of communicating dynamic responses between preceding and following vehicles, to improve the followers' ride comfort and handling, has been identified as a research need for convoy vehicle systems. -- This research implements a form of preview control to improve the vertical dynamics of convoy vehicles. An academic virtual convoy, composed of a lead vehicle with active suspension system, and a follower vehicle with preview-controlled active suspension, is developed in MATLAB and SIMULINK. Preview control gives a theoretical improvement over active control by further decreasing sprung mass acceleration (ride quality) and/or improving road holding. Quarter car models with two degrees of freedom (DOF) are employed for modeling and simulation. In contrast to conventional preview control with look-ahead sensors, the vertical response states of the lead vehicle are used to generate feed forward control gains in addition to feedback control gains for the preview controller of the follower vehicle. The results show improved ride comfort and road holding of the follower vehicle with the novel preview approach compared to a lead vehicle with active suspension. Moreover, the power demand for the follower vehicle suspension is much less than for the lead vehicle. Longitudinal dynamics of a convoy system, with five vehicles, are evaluated and an adaptive cruise control system is implemented to control the longitudinal aspects of the convoy such as relative space and velocity among vehicles. Future work will implement the state-based preview controller into such a convoy, with variations in following distance, to test the robustness of the method.


identifier: MacNeil, Doreen Elizabeth <https://research.library.mun.ca/view/creator_az/MacNeil=3ADoreen_Elizabeth=3A=3A.html>   (2009) Optics and psychophysics in a clinical setting: success of a screening battery for assessing visual functioning in human infants.  Masters thesis, Memorial University of Newfoundland.

abstract: Compared to preschool screening, infant vision screening has typically been regarded as much less feasible as infants require more expensive equipment, highly trained personnel, and/or much longer screening times for individual patients. However, early infancy to 3 years marks a critical period of plasticity during which time synaptic connections within the brain are capable of rearranging based on experience. This critical period extends for a variable period of time, but the extent of the plasticity diminishes with age, thus, responsiveness to treatment lessens with age and the depth of impairment is influenced by the duration of the visual abnormality. The evidence for early sensitive, or critical periods, suggests that the best opportunity for prevention and treatment can be expected if screening takes place as early in life as possible. -- The primary objective of the present study was to develop and assess a suitable vision screening battery for infants, namely those within the initial stages of the period of visual plasticity. Infants and toddlers (N=189) were assessed with a battery of the latest optical and psychological tests. Within a single session, we attempted to measure, for each eye, optical refractive error, visual acuity, contrast sensitivity, and conducted a full ocular alignment/motility examination. -- The battery was relatively successful with all age groups. Notably, all children completed at least one test, 95% completed 2 tests and nearly half (48%) completed 4 tests. Furthermore, the average completion time of the test battery for all age groups was 12.8 minutes with a range across age groups of 9.2 to 13.8 minutes. Thus, the present study was successful in demonstrating that children between the ages of 6-months and 3 years can be tested on several aspects of visual functioning in a fairly effective and efficient manner using a relatively comprehensive battery of tests. The promising results of the present study highlight the potential to screen children at a much younger age than is currently standard and represents an important step in the assessment and further development of childhood screening programs.


identifier: Zhang, Jianjun, 1967 July 31- <https://research.library.mun.ca/view/creator_az/Zhang=3AJianjun,_1967_July_31-=3A=3A.html>   (2009) On the variability of doppler spectra in hf groundwave radar remote sensing over the ocean surface: an investigation based on pulsed and frequency modulated sources.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: An examination of the fluctuations of the Bragg peaks in high frequency (HF) radar received backscatter spectra from the ocean surface is considered in the light of recent cross section models. It is well known that there are likely several factors giving rise to this phenomenon. In the first part of the research work, the effect that is purely caused by the use of a pulsed Doppler radar waveform is examined. The radar received signal is assumed to be scattered from a time-varying random rough surface represented as a zero-mean, Gaussian random process. Numerical examinations of the existence and distribution of Bragg fluctuations are carried out first. Various radar operating frequencies and pulse widths are selected to simulate the time series for different conditions. Doppler spectra (power spectral density, PSD) are estimated as periodograms. The centroids of the Bragg peaks are obtained and compared with theoretical values and the Bragg fluctuations from time to time are observed. The statistical properties of the centroid positions are indicated and compared with resolutions of the fast Fourier transform (FFT) algorithm to reveal their significance. Then the physical processes which underlie the observed variability of the HF sea echo over short time periods are examined. It will be seen that, by implementing both numerical and analytical techniques, interrogation of such a surface via a pulsed signal inherently leads to temporal variation of echo power at every frequency position of the Doppler spectrum. -- The second part of the research work is an investigation of the Bragg fluctuations when HF radar uses the frequency modulated waveforms, which include frequency modulated continuous wave (FMCW) and frequency modulated interrupted continuous wave (FMICW) sources. Such waveforms are often employed in practical radar systems. The mathematical expressions of the cross sections for the FMCW and FMICW waveforms are worked out and their properties are addressed. Then, similar to the previous analysis for the pulsed waveform, time series of the radar received electric field signals are simulated and the PSDs are calculated. Centroid positions of the Bragg peak regions are located and compared to the theoretical values. Statistical properties of the Bragg fluctuations are investigated and comparison with respect to that for the pulsed waveform is carried out. Field data from the Wellen Radar (WERA) are used to verify the simulation results and the fluctuations of the Bragg peaks for the FMCW waveform.


identifier: Butt, Kelly Dawn <https://research.library.mun.ca/view/creator_az/Butt=3AKelly_Dawn=3A=3A.html>   (2010) Perceptions of public drinking water in Newfoundland and Labrador: a mixed methods study.  Masters thesis, Memorial University of Newfoundland.

abstract: From a health promotion perspective, it is important to understand what water sources the public is using and why, and to address any potential health risks relating to public and alternative water sources before negative health outcomes relating to water-borne contaminants are experienced. This study examined perceptions of public drinking water in Newfoundland and Labrador (NL) including factors that influence public drinking water consumption patterns, reported reasons for alternative water use, and the expressed need for information on drinking water. Three focus groups were conducted in October 2006 and a telephone survey in March and April 2007 with residents of NL. Consumers appeared to use water aesthetics as a proxy measure of water safety for tap water and alternative water sources. When participants were unsure about the quality and safety of their tap water, they tended to find an alternative drinking water source. Low compliance with boil water advisory notifications was also observed, which may increase risk of waterborne illness in this population. Transparent communication enhanced trust and general perceptions by public water consumers. In general, public tap water consumers in NL felt that more information about their household drinking water quality would provide more confidence in the product. Enhanced information dissemination may improve perceptions of the safety of drinking water, and minimize health risks to the general public. No single information dissemination method was found to be extensive enough to communicate with the entire population; a combination of distribution methods is recommended to ensure widespread and timely information transfer. A health promotion framework was used to make upstream recommendations for changes in drinking water policy and programs in NL.


identifier: Seneviratne, Sampath Sumedha <https://research.library.mun.ca/view/creator_az/Seneviratne=3ASampath_Sumedha=3A=3A.html>   (2008) On the evolutionary and ecological significance of ornamental traits: the function and variability of the visual and acoustic displays of auklets (Aethiini, Alcidae, Charadriiformes).  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: The occurrence of extravagant display traits in animals can be explained by their phylogenetic history, and adaptations to the physical and social environment. None of these processes are mutually exclusive, however. The primary objective of my study was to elucidate the roles of such processes on evolution of ornamental and vocal traits in a monophyletic group of North Pacific seabirds - the auklets (Alcidae, Aethiini). Sexual selection has been the main explanation for the evolution of feather ornaments such as the elongated facial plumes of auklets. My experimental evidence pointed towards a mechanosensory use for the long facial plumes of Whiskered Auklet (Aethia pygmaea), a crevice dwelling and nocturnal seabird. While navigating inside a lightproof maze simulating the conditions of breeding crevices, Whiskered Auklets had more than double the frequency of head bumps (275%) in the absence of the protruding feathers. Tracing the hylogenetic pattern in several closely related auklet species (Aethia) revealed that only the ornamented younger species that breed in deep crevices have the mechanosensory ability. A pairwise analysis across all non-passerine bird families suggested a greater frequency of long facial plumes in species that live in complex habitats or active in low light conditions. Birds inhabiting cluttered environments would benefit from projecting long facial plumage that mechanically detects obstacles. Thus, once the primordial mechanosensory feather structures evolved through the selective pressure enforced by the habitat, sexual and other selection processes may have acted on these traits and led towards further elaboration. Vocal repertoires of breeding auklets were categorized and quantified to provide a baseline for a comparative study of the evolution of vocalization. Similar to their visual display, auklet vocal repertoires were complex and large (~25 display types across species) with 3-5 vocal display types for each species. There were vocal homologies in the frequency modulation of notes, and arrangement and composition of note types in display. Unlearned vocalizations of non-oscine birds such as auklets' are likely to be informative as to phylogenetic affinities. To test the hypothesis that phylogenetic relationships are the major determinant of vocal evolution in auklets, large number of vocal and syringeal characters were mapped onto a molecular phylogeny based on a combination of mitochondrial and nuclear DNA characters. Low Consistency and Retention Indices (CI = 0.70, Rl = 0.10) indicated a poor fit between molecular and vocal phylogeny. Temporal and syringeal attributes showed a greater congruence with molecular trees than do frequency attributes. A combination of factors including phylogenetic relatedness, visual ornaments, and the acoustic properties of the breeding habitat may have played roles in vocal divergence in auklets. Taken together, these results indicated a complex evolutionary pattern in visual and vocal display in Aethiini, suggesting that although visual and vocal display have evolved in close association with species divergence, natural and sexual selection have created patterns across species that are at odds with phylogeny.


identifier: Chowdhury, Mohammad Khaled H. <https://research.library.mun.ca/view/creator_az/Chowdhury=3AMohammad_Khaled_H=2E=3A=3A.html>   (2009) Probabilistic human health risk assessment from offshore produced water.  Masters thesis, Memorial University of Newfoundland.

abstract: Offshore oil and gas facilities are producing huge amounts of produced water during the production. The produced water contains formation water, injected water, small volumes of condensed water, and any chemical added during production and oil/water separation process. To meet the present regulatory criteria the produced water needs to be treated before discharge to the ocean. But despite the treatment the water contains some contaminants which are chemicals of concern for environment and human health. -- Produced water contains both organic and inorganic constituents. Several studies have been conducted in the past to assess their risk associated with produced water. The toxicity and persistence of polycyclic aromatic hydrocarbons (PAHs) in produced water is of particular environmental concern, but there are very few studies on how to assess the associated human health risk. In this study a probabilistic assessment framework was developed to estimate the risk to human health from offshore produced water contaminants, especially PAHs. Two types of fish growth models were compared to select the best model for marine fishes. A questionnaire survey was conducted to get information about the local trend of fish ingestion and other demographic information. The concentrations of PAHs were considered absorbed in the lipids offish and along with the food chain ingested into the human body. The probabilistic results were compared with the deterministic analysis. The hazard values were to be negligible, but the risk values were found to be slightly above the U.S. Environmental Protection Agency (USEPA) acceptable limit. The probable main reasons for this were lack of data regarding concentrations of contaminants in produced water and values of slope factor of PAHs. The probabilistic framework is flexible and can be extended for use to other contaminants of produced water. A set of recommendations were included for future studies.


identifier: Ding, Yanfei <https://research.library.mun.ca/view/creator_az/Ding=3AYanfei=3A=3A.html>   (2009) Organic bulk heterojunction solar cells with improved efficiency.  Masters thesis, Memorial University of Newfoundland.

abstract: Organic solar cells have attracted considerable attention in recent years for their unique advantages, such as solution processing, flexibilities, and low cost for mass production. The highest power conversion efficiency reported so far is 6.5%. However, it is widely believed that the efficiency barrier of 10% has to be exceeded before polymer solar cells can be commercialized. Our study focuses on developing universal techniques for the improvement of the efficiency of organic solar cells and flexible polymer solar cells on two types of bulk heterojunction devices, i.e. poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), and (poly[2-methoxy,5-(2-ethylhexoxy)-l,4-phenylene vinylene]) (MEH-PPV) and PCBM. The universal techniques we propose and demonstrate to achieve efficiency improvement include treatment of anode electrode by chemical and optical techniques, optimization of buffer layer, and device processing with additives. All reported organic solar cells of high efficiencies have been achieved under inert environment, among which some devices are either encapsulated devices or tandem devices. The polymer solar cells studied in this thesis are unencapsulated single cells tested at ambient environment. The efficiency of the P3HT:PCBM device with ITO substrate irradiated by UV light has been enhanced to 3.65%, as compared with the efficiency of 2.01%) from the device fabricated on untreated ITO substrate. To improve the efficiency of organic solar cell, we reveal an approach to effectively adjust the properties of the buffer layer, Poly(ethylene-dioxythiopene):poly(styrenesulfonate) (PEDOT:PSS), achieving an improvement in the efficiency from 2.08%  to 2.92%. The properties of MEH-PPV:PCBM devices processed with either of the two additives, dimethyl sulfoxide (DMSO) or 1,8-octanedithiol (ODT) demonstrate significant increases in the efficiency, i.e., from 2.5%) to 2.8% after doped 2 vol% of ODT, and from 2.5% to 3.15% by doping 5 vol% of DMSO, surpassing the highest efficiency of MEH-PPV:PCBM solar cells reported so far. -- We demonstrate the operation of flexible solar cells, which are fabricated on polyethylene erephthalate (PET) substrates. Size effect on the performance of flexible solar cells indicates that the efficiency of the solar cell increase in the device size. The relationship between the efficiency and the bending angle of the flexible solar cells as well as the mechanisms of the degradation in efficiency are evaluated for the finite time.


identifier: Palit, Swomitra <https://research.library.mun.ca/view/creator_az/Palit=3ASwomitra=3A=3A.html>   (2007) Pulsed field gradient NMR study of colloids.  Masters thesis, Memorial University of Newfoundland.

abstract: Pulsed field gradient nuclear magnetic resonance (NMR) experiments were performed on hard-sphere-like colloidal suspensions. We synthesized NMR-visible colloidal particles and measured spectrally resolved diffusion coefficients for monodisperse suspensions of different size particles. Results of these experiments show good agreement with theoretical expectation. We also probed a bidisperse (binary) colloidal suspension successfully and obtained the diffusion coefficients of two species simultaneously. The colloidal model system developed in this work will allow the study of colloidal phase behaviour in binary mixtures for different number and size ratios.


identifier: Twells, Laurie K.  <https://research.library.mun.ca/view/creator_az/Twells=3ALaurie_K=2E_=3A=3A.html>   (2008) Obesity and its impact on a provincial health system in Canada.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Purpose: The main focus of this study is to explore the relationship between body mass index (BMI) as a reflection of obesity, its association with chronic disease, health services utilization and its impact on direct costs to the health system, in the province of Newfoundland and Labrador. -- Methods: In a secondary analysis of the provincial component of the Canadian Community Health Survey version 1.1 (2000/01), survey records for respondents aged 20-64 (n=2345) were linked to provincial physician and hospitalization data in order to obtain objective measures of longitudinal health services utilization. Regression models were used to examine whether BMI level was an independent predictor of family physician (GP) visits, hospitalization and costs. -- Results: Of the study sample 37%, 39% and 17% and 6% were classified as normal, overweight, obese, and morbidly obese respectively. The obese (including morbidly obese) were more likely to report having serious chronic conditions after adjusting for age and gender. Analyses identified the morbidly obese group (BMI ≥ 35kg/m²) as having a significantly higher number of GP visits over a 5-year period when compared with the normal weight group (BMI 18.5-24.9kg/m²), [median 22.0 vs. 17.0, p<05], and as having significantly higher average costs of GP (p<.001) and specialist services (p<.05). Controlling for number of chronic conditions and other covariates, being morbidly obese remained a significant independent predictor of family physician visits (p< .001) and total physician costs (p < .01), but was not a predictor of hospitalization. -- Conclusions: Morbid obesity is independently associated with increased GP utilization and total physician costs but not with hospital utilization. Some future health promotion/education and weight loss interventions should be targeted at this high-risk group; however a population health approach must be developed in order to have an impact on the prevalence of obesity in this population.


identifier: Abraham, Jacob <https://research.library.mun.ca/view/creator_az/Abraham=3AJacob=3A=3A.html>   (2008) Plastic response of ship structure subject to ice loading.  Masters thesis, Memorial University of Newfoundland.

abstract: Stiffened plates are the basic structural building blocks of ships and many onshore and offshore structures. The present research explores the plastic response of a stiffened plate subjected to lateral ice loads. The Finite Element Method (FEM) is extensively used to study the plastic behavior of stiffened plates. In order to gain confidence in using FEM, a validation study of a full scale experiment is initially presented. Following the examination of experimental and numerical results for a loaded grillage, the report examines three separate but related questions concerning the design of ice capable stiffened panels. -- Ship structure design normally considers single frames. This is justified because under uniform loading, all frames behave similarly - so it is reasonable to consider frames singly. In case of ice loading which is non symmetric, the symmetric boundary condition does not accurately represent the true structural behavior. The difference in load carrying capacity between frames in isolation and frames as part of a grillage, subjected to an unsymmetrical loading is studied. -- The capacity of a stiffened plate depends on many factors - geometric properties, material properties, loading type etc. The current IACS Polar Rules for Ships contain plastic limit state models of frame capacity. These limit states are analytically derived using relatively simple energy methods and validated by finite element analyses. The contributions from large deformations and membrane stresses are ignored and hence these analytical solutions may not accurately estimate capacity of all frames. The reliable methods to estimate capacity are either to conduct a full scale experiment or a nonlinear finite element analysis. These methods are either very expensive or too complex. There is a need for a simple regression equation which can predict capacity taking into account all the non-linear behavior of the structure. There are ten factors which influence load carrying capacity of a frame. The study of ten factors at two levels (at high and low levels of each factor) requires 1024 (2¹⁰) ANSYS analyses. A significant reduction in the number of analyses is achieved by using “design of experiments” (DOE) method. A new regression equation for estimating load carrying capacity of the frame is proposed and validated using independent FE analyses.  -- The total load carrying capacity of a stiffened plate is contributed by both shell plate and stiffener. In most situations, stiffened panels will be sensitive to buckling under axial loads. In the case of ice reinforcement, the loads are primarily normal to the shell, with minimal axial loads. The concern for frame buckling remains, although the issue is less well understood. Some stiffeners, especially those with slender webs, show a tendency to fail by local web buckling, tripping and shear buckling, causing a sudden loss of capacity and resulting in collapse of the structure. The IACS Polar Shipping Rules (URI2) contains a requirement aimed at the prevention of web buckling by specifying a maximum web height / web thickness (hw/tw). While URI2 employs plastic limit states, the stability ratio is based on prevention of elastic buckling. In some cases these stability requirements have a significant impact on the design. The current rule limiting values of hw/tw are very conservative and do not adequately reflect the conditions that lead to instability. The FEM coupled with the DOE method is used in the study. Six factors which influence stability of a flat bar stiffener are identified. The study of six factors even at two levels (at high and low levels of each factor) requires 64 (2⁶) possible combinations of factors to be considered. A significant reduction in the number of cases is achieved by employing DOE method. The main factors affecting the plastic stability of a frame are quite different from the usual elastic buckling parameters. A new relationship is proposed for calculating the limiting web height and web slenderness.


identifier: Burgess, Janet A. <https://research.library.mun.ca/view/creator_az/Burgess=3AJanet_A=2E=3A=3A.html>   (2009) Reduplication and initial change in Sheshatshiu Innu-aimun.  Masters thesis, Memorial University of Newfoundland.

abstract: Reduplication and Initial Change, prominent phonological processes in Algonquian languages, are productive in the Innu-aimun dialect spoken in Sheshatshiu, Labrador. Reduplication, especially common with verbs, repeats elements of words to signify a kind of multiplicity or pluractionality. Initial Change modifies the first vowel of the verb stem, marking particular grammatical contexts. The form of the change varies with the original vowel quality and is language specific. In Innu-aimun, both processes target the leftmost edge of words, and have the potential to apply concurrently to a word. This thesis describes monosyllabic and bisyllabic reduplication for Sheshatshiu Innu-aimun, discussing commonalities with other Algonquian languages and features unique to this dialect. The description of Initial Change discusses the expected change patterns and notes a previously undescribed pattern. This work also examines the interaction of reduplication and Initial Change as they apply to the same words, suggesting some theoretical explanations underlying the observed data.


identifier: Trindade, Mariana. <https://research.library.mun.ca/view/creator_az/Trindade=3AMariana=2E=3A=3A.html>   (2009) On the spatio-temporal radial growth response of four alpine treeline species to climate across central Labrador, Canada.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: This thesis applies standard dendrochronological techniques to contrast and compare between the radial growth responses of alpine treeline species across a climate gradient in central Labrador, Canada. Four species were examined: black spruce (Picea mariana (Mill.) B.S.P.), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L.) Mill.) and eastern larch (Larix lahcina (DuRoi) K. Koch). Eighteen tree ring width (TRW) chronologies were constructed at five alpine treeline sites across a 600 km long transect from the Labrador Sea to the Quebec border. The effects of  climate and forest disturbance events on radial tree growth were examined at various spatial and temporal scales. -- This study is the first to conduct dendrochronological studies on black spruce, fir and larch in Labrador and to use samples  from across central Labrador. The chronology statistics are in accordance with regional publications, with the exception of the larch chronologies, which have exceptionally high sensitivity values (MS>0.3). These results suggest that the radial growth response of each one of the tree species sampled is uniquely adapted to monthly and/or seasonal temperature and precipitation values during the growing season and, in some cases, to winter snowfall amounts. These climate sensitivities are also site-specific and indicative of a strong reliance on the proximity of the Labrador Sea. This study simultaneously compares the radial growth patterns of the four alpine treeline species in a region that, to date, has been largely understudied. As a result, this study has identified possible periods of outbreaks of spruce budworm (Choristoneura fumiferana (Clem.)) and larch sawfly (Pristiphora erichsonii Hartig), which are synchronous with outbreaks reported from eastern Quebec. The intensity and frequency of these insect outbreaks is also climate-dependent, and can be so severe as to mask the climate sensitivity in the larch trees. A palaeoclimatic reconstruction (1847-2004) using merged spruce chronologies at one of the sites, the Mealy Mountains, is in accordance with other published records but has weak significance values due to a high degree of variability in climate sensitivity throughout the instrumental record (1942-present). The high degree of variability in the climate sensitivity of spruce trees across central Labrador is partly due to the effect of spruce budworm outbreaks on the radial growth of trees, but other site-specific factors such as moisture effects must also be contributing to the variability. Further studies are needed to determine the cause of this episodic divergence in the relationship between radial tree growth and climate in central Labrador in order to comprehend more fully which environmental factors influence radial tree growth, and how this changes with time.


identifier: Buxton, Rachel T. (Rachel Thérèse) <https://research.library.mun.ca/view/creator_az/Buxton=3ARachel_T=2E_=28Rachel_The==0301re==0300se=29=3A=3A.html>   (2010) Monitoring and managing recovery of nocturnal burrow-nesting seabird populations on recently predator-eradicated Aleutian Islands.  Masters thesis, Memorial University of Newfoundland.

abstract: Few quantitative data exist measuring nocturnal burrow-nesting seabirds that were heavily affected by predator introductions in the Aleutian Islands, due to challenges associated with monitoring. I evaluated the feasibility of using automated recording and recognition of call activity as a way to examine restoration. I assessed recording quality and call recognition rate in the windy Aleutian environment, characteristic of remote seabird breeding islands. With only 3% of nights unusable due to wind noise, devices were extremely robust. I used this method to inventory call activity across the western Aleutian Islands and relate patterns to recovery rate. I found that nocturnal seabird activity is positively related to time since eradication, however a number of other factors render recovery rate complicated.   In order to encourage re-colonization I performed a series of social attraction experiments. Continued acoustic monitoring and artificial attraction are required to promote population recovery throughout the Aleutian chain.


identifier: Bambrick, Jillian <https://research.library.mun.ca/view/creator_az/Bambrick=3AJillian=3A=3A.html>   (2009) Palaeoeskimo sealskin processing in Port au Choix, northwestern Newfoundland: a paleoenvironmental analysis.  Masters thesis, Memorial University of Newfoundland.

abstract: Recent palaeolimnological investigations of Bass Pond, Port au Choix, have revealed a disturbance history concurrent with the Groswater and Dorset Palaeoeskimo occupations of the nearby Phillip's Garden, Phillip's Garden East, and Phillip's Garden West sites. Additionally, sealskin processing tools have been identified from the Dorset assemblage recovered from Phillip's Garden, leading to the hypothesis that Bass Pond was used in the sealskin processing procedure. Results of a second palaeolimnological investigation of Bass Pond, presented in this thesis, indicate that the disturbance observed in Bass Pond may be more associated with the Groswater occupation of the area, and not the Dorset as previously hypothesized. The addition of geochemical investigations of δ¹⁵N, used elsewhere to show marine mammal influence on fresh water ponds, indicates a marine mammal presence within the pond during the same disturbance period, possibly as a result of sealskin processing activities. This, however, is not corroborated by the archaeological record. This investigation provides some of the earliest evidence of hunter-gatherer environmental impact in Canada.


identifier: Steel, M. Abigail <https://research.library.mun.ca/view/creator_az/Steel=3AM=2E_Abigail=3A=3A.html>   (2010) Nickel hydrometallurgical waste residue characterization, geochemical reactive transport modeling and disposal risk management.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: There has been limited experience in the use of hydrometallurgy to process nickel sulfide concentrate, thus the hydrometallurgical process residue is generally not well characterized in the open literature. This research will assist in ensuring the long-term stability of the waste and increase the understanding of its degradation and reactivity on disposal. The research pertains to the mobility of metals and sulfur compounds, their stability in minerals and phases associated with hydrometallurgical residues and the development of a risk-based methodology for selection of mine waste disposal designs. The research focuses on sulfur compounds and ore metals, such as nickel, cobalt and copper, which are target metals for the proposed hydrometallurgical processing facility in Long Harbour, Newfoundland. It will be particularly important to understand the effect of high sulfur waste material in Newfoundland's wet, temperate climate and generally slightly acidic surface water conditions. The research objectives are to characterize the mobility of metals from hydrometallurgical residue and assess residue reactivity/stability under different disposal conditions in order to determine the most favourable waste disposal procedures. Specific research objectives include: 1) characterization of the waste residues through mineralogical studies and elemental analysis; 2) assessment of acid and metal generating potential of the waste through static and kinetic tests and geochemical modeling; 3) assessment of decant water conditions in the residue impoundment through a calibrated numerical model; 4) evaluation of residue subsurface disposal conditions on a spatial and temporal basis through numerical modeling calibrated by in-situ field testing; and 5) prediction of the fate of heavy metals in the receiving environments. Finally, a risk-based, multi-criteria decision making approach is developed to assess various mine waste disposal options and applied through a case study. -- As there is very limited experience in the processing of nickel sulfide concentrate through hydrometallurgy the high sulfur, process residue is generally not well characterized. The mineralogical and sequential extraction work provided key residue mineral and microstructure information; suggested how target metals are present in the residue minerals and phases; and provided metal partitioning results which are important in understanding the residues metal leaching potential. The static and kinetic testing conducted further characterized the residues by assessing their acid generating and metal leaching capacity. Geochemical modeling of process residues is not widely reported in the literature due in part to the complexity of the mineralogical assemblage. This work, through calibrated models, was successfully able to model the residue that led to a greater understanding of factors impacting the chemistry of groundwater and surface water and enabled the prediction of longer term subsurface conditions in the residue impoundment. -- The design of a mine waste disposal site is waste and site specific and is complex. Using a risk-based decision-making to assess design options for a mine waste disposal project is novel and effective approach. This approach integrated the results from the mineralogical characterization and contaminant fate and transport modeling and included uncertainty in the human health and ecological risk analysis; then incorporated this risk analysis in a multi-criteria decision making analysis to evaluate the optimal mine waste disposal alternative.


identifier: Lewis, Johanne M. <https://research.library.mun.ca/view/creator_az/Lewis=3AJohanne_M=2E=3A=3A.html>   (2007) Protein synthesis in hypometabolic fishes.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: The objective of this doctoral thesis was to investigate protein synthesis in two species of hypomctabolic telcosts: the north temperate labrid, Tautogolabrus adspersus (cunner) and the Amazonian cichlid, Astronotus ocellatus (oscar). The Hooding dose methodology, which measures in vivo rates of tissue protein synthesis following the injection of a large dose of radiolabeled phenylalanine, was used to measure rates of amino acid incorporation at three key time points with respect to metabolic depression: 1) the entrance into metabolic depression; 2) while in a metabolically depressed state; and 3) during the return to regular activity levels. Additionally, rates of phenylalanine incorporation in the subcellular protein pool were determined in cunner in response to acute hypothermia and hypoxia. In general, an active decrease in protein synthesis (55-65%), in both the whole tissue and subcellular protein pools, accompanied the metabolic depression observed at the whole animal level. However, tissue specific responses in protein synthesis were evident in both species and appeared to play an adaptive role in extending survival time while in an energetically compromised state. Only a modest decrease in brain protein synthesis was observed in hypoxic oscar (30%), which may be linked to the  maintenance low levels of activity for predator avoidance. Protein synthesis was defended in the mitochondrial protein pool of the cunner gills during both acute hypoxia and hypothermia challenges, suggesting its importance to the maintenance of ion and gas exchange in this tissue. In addition, a significant hypcractivation of liver protein synthesis occurs in metabolically depressed cunner, which may be associated with the production of antifreeze proteins at extreme low temperatures. During the post-dormancy recovery period a significant hypcractivation of protein synthesis occurred in white muscle, heart and liver in cunner. In contrast, post-hypoxic oscars do not experience a hypcractivation in protein synthesis despite a significant increase in oxygen consumption during recovery. This latter result suggesting that the accumulation of a protein debt is either stress specific or an artifact of the length of time spent in a hypometabolic state.


identifier: Constantine, Heidi Peet <https://research.library.mun.ca/view/creator_az/Constantine=3AHeidi_Peet=3A=3A.html>   (2010) Place, space and identity in He drown she in the sea.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis has no abstract


identifier: Critch, Raymond Glenn <https://research.library.mun.ca/view/creator_az/Critch=3ARaymond_Glenn=3A=3A.html>   (2008) Paul Grice and Donald Davidson on the conditions of the possibility of communication.  Masters thesis, Memorial University of Newfoundland.

abstract: I  define  communication, based on a  combination  of the work of Donald Davidson and Paul Grice, as the transmission of one party's thoughts to another. What their work shows is that communication by triangulation of the meaning of another's words from two fixed points requires a deep form of alterity or a positive orientation toward  the  other.  The   fixed  points,  particularly  in  Davidson's   theory  of Radical Interpretation,  are the presumptions  that the other party is  speaking truths about commonly held states of affairs. This triangulation is only possible, they acknowledge, through a thorough application of the principle of charity or cooperation. In this way, Grice and Davidson are kindred spirits; both authors rely on serious dispositional conditions  to allow the transmission of meanings  from one individual to another. However, neither author might go far enough in their assessment of what the principle of charity implies.  Charity requires a presumption of truth and a presumption of common states of affairs. The presumption of truth seems to depend on a presumption of honesty, while both truth and common states of affairs imply a presumption of common ontology. We do communicate, and if Radical Interpretation is a plausible theory for how we communicate, we must also, in our communication, be governed by the principle of charity. Since we are governed by the principle of charity, we must also, for the purposes of communication, share a common basic ontology and, therein, a sense of alterity that goes far beyond what either author expected from the principle of charity.


identifier: Kong, Jiasi <https://research.library.mun.ca/view/creator_az/Kong=3AJiasi=3A=3A.html>   (2009) Optimization methods applied to electric power systems.  Masters thesis, Memorial University of Newfoundland.

abstract: The modern power system has been facing a tremendous challenge for utilities to maintain an economical, reliable and secure operation due to the increasing fuel cost, long distance transmission and intense market competition. This work investigates the application of optimization methods in power systems. Specifically, optimization methods to minimize total fuel cost and transmission loss for a specified load are considered. Multiobjective optimization focusing on the constraints related to the steady state operation including security constraints in power system is studied. Optimal Power Flow (OPF) including economic dispatch, security constrained optimal power flow and multiobjective optimization are the three key concepts of this thesis. Sequential quadratic programming is proposed and implemented as an optimization method for carrying out this research. Weighted sum method, a conventional multiobjective optimization method, is applied and  implemented by Matlab Optimization Toolbox. A series of mutiobjective OPF case studies are presented in this research to show the performance and applications of the proposed optimization methods. The results from the case studies  presented show that the tools are able to determine feasible, non-dominated optimal operation points that allow a system to operate economically and safely under a specified load demand.


identifier: Steadman, Jamie Robert <https://research.library.mun.ca/view/creator_az/Steadman=3AJamie_Robert=3A=3A.html>   (2009) Rejecting electoral reform : the failed social movement to introduce proportional representation to the Prince Edward Island legislature.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis has no abstract


identifier: Warren, John Phillip <https://research.library.mun.ca/view/creator_az/Warren=3AJohn_Phillip=3A=3A.html>   (2009) Moose hunting in Heart's Content, Trinity Bay, Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract: In rural Newfoundland in autumn, nothing, other than the commercial fishery, dominates the discussion among men as much as moose hunting. This activity has evolved from the subsistence hunting and fishing traditions of early settlers but remains a focus of sociability in the community and a major aspect in the social identity of men. -- Unlike most mainland North American sports hunting where ritual is a major feature, in Newfoundland ritual is minimal, moose hunting being motivated by social, traditional, and economic factors. Sharing is dominant in the pre-hunt, hunt, and post-hunt stages including the traditions of sharing personal experience narratives and sharing meat within the community. Traditions have become highly detailed and are demonstrated by a system of horizontal and vertical transmission including a unique tradition of adoptive transmission that presents parallels to the former fishing industry. New traditions are evolving with women increasingly becoming participants in a supporting role to provide more access to moose licences, contributing to demographic changes in hunting parties. Moose hunting has become a practical means of providing food which has developed a range of foodways involving moose meat for private and community consumption. -- Though new technologies are being utilized in moose hunting, all hunters in this study share a love for the outdoors and the continuation of traditions established by generations of fisherman-hunter forefathers.