identifier: Rahman, Mohammad Aminur <https://research.library.mun.ca/view/creator_az/Rahman=3AMohammad_Aminur=3A=3A.html>   (2014) The role of conformational dynamics in ground and excited ruthenium(II) polypyridyl complexes.  Masters thesis, Memorial University of Newfoundland.

abstract:
Initially, the fluxional solution dynamics of the terpyridine (tpy) ligand in
[Ru(bpy-d₈)₂(h²-tpy)]²⁺ were studied by proton NMR spectroscopy, prior to a study of the
excited state dynamics. Variable temperature 1H NMR data reveals that the pendant
pyridine ring of the tpy ligand wobbles or rotates rather than undergoing an exchange or
tick-tock twist mechanism. Then, the excited state dynamics of [Ru(bpy)₂(h²-tpy)]²⁺ were
studied. Protonation of the pendant pyridine ring of [Ru(bpy)₂(h²-tpy)]²⁺ demonstrates
that intra ligand charge transfer (ILCT) occurs between the pendant pyridine and adjacent
bpy ligand in the [Ru(bpy)₂(h²-tpy)]²⁺ complex. Thus, addition of trifluroacetic acid
(TFA) results in slight spectral changes which have been assigned to the protonation of
the pendant pyridine of [Ru(bpy-d8)₂(η²-tpy)]²⁺. The protonation of the pendant pyridine
increases the lifetime from 0.082 ns to 2.6 ns. Mulliken-Hush analysis of the ILCT of
[Ru(bpy)₂(η²-tpy)]²⁺ has been done and compared with that of [Ru(bpy)3]²⁺. The value
for the electronic coupling element (HDA) for [Ru(bpy)₂(η²-tpyH⁺)]³⁺ suggests that
the electronic coupling between bpy and the pendant pyridne is quite strong.

A preliminary study on photoinduced ligand loss from [Ru(bpy)₂(py)²]²⁺ has been
made. The photolysis of cis-[Ru(bpy)₂(py)²]²⁺
in the presence of trifluoroacetic acid,
using broad band, white light excitation, leads to a shift in lmax from 458 nm to 472 nm,
consistent with a substitution reaction of the pyridine by THF. A flash photolysis study
was also performed to investigate the excited state changes of [Ru(bpy)₂(py)²]²⁺ in THF.


identifier: Bartlett, Carol <https://research.library.mun.ca/view/creator_az/Bartlett=3ACarol=3A=3A.html>   (2014) The Thorvald mass transport deposit, early Cenozoic, in the Jeanne d’Arc basin, offshore Newfoundland.  Masters thesis, Memorial University of Newfoundland.

type: Thesis NonPeerReviewed

format: application/pdf application/pdf

abstract:
Mass transport deposits form a significant component of deep marine and slope
sediments. Knowledge of the architecture of such deposits is relevant to assessment of
them as potential geohazards for drilling rigs. The objective of the thesis research is to
explain the structural relationships in the Early Cenozoic Thorvald Mass Transport
Deposit and to use these findings to relate the internal structures to kinematics of the
failure process.
The Thorvald Mass Transport Deposit within the Jeanne d'Arc Basin has distinct
structural domains, known as the head, translational region, and toe, which are analogs to
structural elements within fold and thrust belts. The intricate distribution of the thrust
faults, back thrusts, lateral transfers and extensional faults signifies the forces present
upon the failure. This distribution is mapped in the Thorvald Mass Transport Deposit
(MTD), offshore Newfoundland. This analog enables better understanding of the
processes of failure and deformation.
The MTD is defined by conventional seismic mapping and enhanced by seismic
attributes within the Flying Foam 3-D dataset from the Jeanne d’Arc Basin.


identifier: Zhu, Yun <https://research.library.mun.ca/view/creator_az/Zhu=3AYun=3A=3A.html>   (2014) Influence of prediagnostic dietary patterns and cigarette smoking on colorectal cancer survival: a cohort study.  Masters thesis, Memorial University of Newfoundland.

abstract:
Cigarette smoking and dietary patterns are associated with colorectal cancer
(CRC) incidence; however, little is known about their influence on survival after CRC
diagnosis. This study was designed to: 1) investigate the association of dietary
patterns with all-cause (overall survival; OS) and disease-free survival (DFS) among
CRC patients; 2) examine the association of smoking with OS and DFS among CRC
patients.
A cohort of 750 CRC patients diagnosed from 1999 to 2003 in the Canadian
province of Newfoundland and Labrador was followed for mortality and recurrence
until April 2010. Participants reported their smoking history and dietary intakes using
a personal history questionnaire and a food frequency questionnaire. Dietary patterns
were identified with factor analysis. Multivariate hazard ratios (HRs) and 95%
confidence intervals (CIs) were calculated with Cox proportional hazards regression,
controlling for major known prognostic factors.
Results from this study are presented in two parts: 1) Disease-free survival among
CRC patients was significantly worsened among patients with a high dietary intake of
processed meat (the highest versus the lowest quartile HR: 1.82, 95%CI: 1.07-3.09).
No associations were observed with the prudent vegetable or the high sugar patterns
and DFS. The association between the processed meat pattern and survival in CRC
patients was restricted to patients diagnosed with colon cancer (the highest versus the
lowest quartile: DFS: HR: 2.29, 95%CI: 1.19-4.40; OS: HR: 2.13, 95%CI: 1.03-4.43).
Potential effect modification was noted for sex (DFS: P=0.04, HR: 3.85 for women
and 1.22 for men). 2) Compared with never smoking, current (HR: 1.78; 95%CI:
1.04-3.06), but not former (HR: 1.06; 95%CI: 0.71-1.59), smoking was associated
with decreased OS, although this association was limited to tumors in the colon. The associations of cigarette smoking with the study outcomes were higher among patients
with >40 pack-years of smoking (OS: HR: 1.72; 95%CI: 1.03-2.85; DFS: HR: 1.99;
95%CI: 1.25-3.19). Potential interaction was noted for sex (DFS: P=0.04, HR: 1.68
for men and 1.01 for women) and age at diagnosis (OS: P=0.03, HR: 1.11 for patients
aged < 60 and 1.69 for patients aged 60).
In summary, 1) processed meat dietary pattern prior to diagnosis is associated
with higher risk of tumor recurrence, metastasis, or death from any cause among
colon cancer patients; 2) pre-diagnosis cigarette smoking is associated with worsened
prognosis among patients with colon cancer.


identifier: Jasim, Faten <https://research.library.mun.ca/view/creator_az/Jasim=3AFaten=3A=3A.html>   (2014) Development of a base model for flood forecasting studies in the Humber River Basin (NL) and selection of an appropriate model forcing dataset.  Masters thesis, Memorial University of Newfoundland.

abstract:
The Humber River basin (7860 km²) in Newfoundland is the second largest
watershed on the island portion of the province. Efforts are underway to establish a base
model for a flow forecasting system within the basin for flood damage mitigation and
hydroelectric power optimization. This study examines three model forcing datasets
(temperature and precipitation) and attempts to identify the best option based on the
simulated streamflow amounts. In past stochastic studies, difficulty has been encountered
due to a lack of observed data and the complexity of the hydrologic system, especially
during the snowmelt period. Strong topographic influences within the basin limit the
representativeness of observations.
Given the strong topographic influences on orographic precipitation and
temperature, the WATFLOOD gridded hydrologic model was selected, which permits the
use of topographically adjusted gridded meteorological inputs as well as station data.
Adjusted station data from APC2 (Second Generation Adjusted Precipitation for Canada),
NARR (North American Regional Reanalysis) and CaPA (Canadian Precipitation
Analysis) were used in the study. Based on 30-year run sequences, a base model able to
translate weather and antecedent moisture to streamflow has been developed.
Generation of initial conditions for forecasting purposes cannot rely on APC2 data
due to its production lag. Instead, the NARR and CaPA products were evaluated against
gridded station observations. Results indicated that APC2 produces the best results in
terms of streamflow followed by NARR and CaPA. For model initialization purposes, the
NARR precipitation dataset is recommended over CaPA for the Humber River.


identifier: Harazim, D.  <https://research.library.mun.ca/view/creator_az/Harazim=3AD=2E_=3A=3A.html>   (2014) High-energy seafloor processes and biological reworking as first-order controls on mudstone composition and geochemistry.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
This PhD research project aims to develop a better understanding of how physical
seafloor reworking and macrofaunal bioturbation control the lithofacies variability of
mudstones deposited under high-energy seafloor conditions. To address this aim,
bioturbated and unbioturbated mudstones from two natural laboratories in Newfoundland,
Canada and Baja California, Mexico were investigated. Sections of interest were logged
at a cm-scale and organic and inorganic geochemical measurements were performed on
bioturbated and unbioturbated mudstones within both successions. To improve the
fidelity of paleoenvironmental reconstructions these geochemical measurements were
combined with high-quality sedimentological and ichnological datasets at a range of
length scales. Unbioturbated mudstones in the Early Ordovician Bell Island Group,
Newfoundland, previously reported to have been deposited under anoxic conditions,
instead, most likely originated as hyperpycnal flows and wave-enhanced sediment gravity
flows. The proximity to a fluvial source and residence time of rock components in the
near-surface zone are interpreted to be the primary control on the compositional
heterogeneity of mudstones within this Ordovician mud-dominated shoreface
paleoenvironment. Following this, high-energy seafloor conditions are a more realistic
explanation for the high presence of unbioturbated mudstones in the heterolithic Bell
Island Group. Additionally, the formation mechanism of shrinkage (‘synaeresis’) cracks,
which are sedimentological prime indicators for salinity fluctuations in marginal-marine
environments, has been re-evaluated. Sediment cracking is proposed to form as an
exclusively intrastratal process, independent of fluctuations of pore water salinity. Spatial
rheological inhomogeneities associated with microbial mat decay shortly after burial are proposed to produce intrastratal shrinkage cracks. The effect of bioturbation on the
geochemical variability of mudstones has been investigated within mudstones and finegrained
sandstones of the Rosario Formation, Mexico. The spatial distribution of organic
carbon and redox-sensitive trace elements is controlled by the feeding activity of grainsize
selective vermiform animals and associated in-vivo alteration of weatheringsusceptible
minerals. The reactivity of organic carbon is proposed to be a critical variable
controlling pathways of diagenesis in bioturbated mudstones. It is imperative that
paleoenvironmental analyses consider the long-term effects of bioturbation and highenergy
seafloor processes to fully understand the compositional variability of mudstones
within a basin-wide context.


identifier: Chen, Supeng  <https://research.library.mun.ca/view/creator_az/Chen=3ASupeng_=3A=3A.html>   (2014) Particle filter based target tracking from X-band nautical radar images.  Masters thesis, Memorial University of Newfoundland.

abstract:
In this thesis, two particle filter (PF) based visual tracking approaches are designed
for maneuvering target tracking from X-band nautical radar images: a PF-only based
approach and a combined particle-Kalman filters (PF-KF) based approach. Unlike
existing Kalman filter (KF) based target tracking algorithms used by nautical radar,
these two proposed tracking methods both employ a kernel-based histogram model to
represent the target in the radar image, and a Bhattacharyya coefficient based similar-
ity distance between reference and candidate target models to provide the likelihood
function for the particle filtering. However, the PF-KF method applies a sampling
importance resampling (SIR) particle filter to obtain preliminary target positions,
and then a Kalman filter to derive refined target positions and velocities. Moreover,
several strategies are also proposed to improve the tracking accuracy and stability.
These strategies include an enhanced reference target model construction method,
updating reference target model, and adaptive KF for maneuver. Comparison of
the target information obtained by the proposed PF-KF method from various field
X-band nautical radar image sequences with those measured by GPS shows the pro-
posed approach can provide a reliable and flexible online target tracking for nautical
radar application. It is also shown that, in the scenario of strong sea clutter, the
proposed approach outperforms the PF-only based approach and the classical track-
ing approach which combines order-statistics (OS) CFAR processing and the Kalman
filter.


identifier: Lu, Xiaoming <https://research.library.mun.ca/view/creator_az/Lu=3AXiaoming=3A=3A.html>   (2014) Quantile regression for longitudinal data.  Masters thesis, Memorial University of Newfoundland.

abstract:
Quantile regression is a powerful statistical methodology that complements the classical
linear regression by examining how covariates influence the location, scale, and
shape of the entire response distribution and offering a global view of the statistical
landscape. In this thesis we propose a new quantile regression model for longitudinal
data. The proposed approach incorporates the correlation structure between
repeated measures to enhance the efficiency of the inference. In order to use the
Newton-Raphson iteration method to obtain convergent estimates, the estimating
functions are redefined as smoothed functions which are differentiable with respect
to regression parameters. Our proposed method for quantile regression provides consistent
estimates with asymptotically normal distributions. Simulation studies are
carried out to evaluate the performance of the proposed method. As an illustration,
the proposed method was applied to a real-life data that contains self-reported labor
pain for women in two groups.


identifier: Zhou, Quan <https://research.library.mun.ca/view/creator_az/Zhou=3AQuan=3A=3A.html>   (2014) Numerical simulation for ship manoeuvring and path following in level ice.  Masters thesis, Memorial University of Newfoundland.

abstract:
This thesis provides a method that combines numerical detection and semi-empirical
formulas to solve the ship-level ice interaction in time domain which can be applied
to studying ship manoeuvring and autopilot in level ice. Numerical implementation
has been accomplished by using programming language FORTRAN90 under Linux
Operation System.
The ship-ice interaction and the ice breaking process is simulated by adopting a 2-D
Discrete Element Method (DEM). A new detection technique name Polygon-Point
Algorithm is developed to identify the contact area. Different Pressure-Area (P-A)
relation and flexural ice plate model are included and studied. Full 3DOF ice induced
load is derived in this thesis. The method is validated by using the data from two
model ship tests and one full scale sea trial.
A Line-of-Sight (LOS) guidance system and PID controllers for path following and
velocity maintaining are also developed. Detail has been provided in solving discontinuity
of commanded heading angle. The path following ability has been examined
and presented.
Recommendations for future works is also provided in the thesis.


identifier: Smith, Doug <https://research.library.mun.ca/view/creator_az/Smith=3ADoug=3A=3A.html>   (2014) Seakeeping experiment of two side-by-side floating bodies.  Masters thesis, Memorial University of Newfoundland.

abstract:
After determining a need to further investigate the hydrodynamic behavior of
the side-by-side floating bodies at a close proximity, model scale experiments were
conducted. This experiment changed parameters such as the gap width and wave
heading to examine the effects of hydrodynamic interaction. Two initial gap widths,
300 and 450 mm, and four wave headings, 90⁰, 60⁰, 30⁰ and 0⁰, were examined.
Each experimental setup was examined over a range of wave frequencies, while free
surface elevation and vessel motion responses were monitored and recorded. Analysis
of the data showed the narrow gap resonance phenomena. However, the experiment
did show little variation of the frequency where gap resonance occurred. Beam seas
cases showed one peak frequency where values were significantly amplified compared
to surrounding frequencies, while other wave headings showed two peak frequencies.
There was little variation of the frequency where resonance occurred for each case.
However, the magnitude of amplification did show significant variation over each
case. The vessel motion response showed significant amplification over quite broad
frequency bands. Beam seas cases showed very little pitch motion but head seas cases
showed significant roll motion.


identifier: Hatcher, Scott <https://research.library.mun.ca/view/creator_az/Hatcher=3AScott=3A=3A.html>   (2014) People at the tidal flats: coastal morphology and hazards in Iqaluit, Nunavut.  Masters thesis, Memorial University of Newfoundland.

abstract:
Rapid environmental change observed in the Canadian Arctic is driving efforts at
federal, territorial, and municipal levels to adapt to the impacts of projected changes.
Recent work with communities has shown that targeted and relevant scientific input
can greatly enhance ongoing vulnerability assessments and policy planning around
adaptation and sustainability. The Arctic coast is dynamic, creating risk to Arctic
coastal infrastructure. Using GIS modelling and geoscientific data collected over three
field seasons, this thesis reports on a project aimed at providing coastal hazard mapping
for Iqaluit, Nunavut. Iqaluit is the capital city of Nunavut, and sits alongside
a macrotidal embayment with extensive tidal flats, which influence many aspects of
life in the community. Data collected include: detailed topography and bathymetry,
elevations of the coastal setting, elevations of past extreme water levels, and morphological
mapping. The results build on previous work in Iqaluit, showing a relatively
stable boulder-strewn sand flat morphology in the macrotidal embayment. Modelling
of the coastal topography indicates a recent (last century) period of quasi stable sea
level, with possible slight emergence persisting. Hydrodynamic data reveal little evidence
for significant erosion through wave and current input. Recorded nearshore
current velocities were between 0.1 - 0.3 m/s, with greater velocities at the top 3 m of
the water column. The hazard mapping then attempts to incorporate the morphological
mapping into a GIS of coastal infrastructure in the city in order to provide detailed information for city planners. Results show limited freeboard of 0.3-0.8 m for most
coastal infrastructure under an upper-limit projection of 0.7 m relative sea-level rise
from 2010 to 2100. Key infrastructure, and especially the subsistence infrastructure
focused on the coast, is actually below past recorded maximum water levels during
high spring tides. Lack of data, however, precludes any reasonable estimate of recurrence.
Geomorphological mapping of the coastal setting provides crucial insight
into the risks to infrastructure from storm waves, erosion, and sea-level rise. The
study shows that the tidal flats are a source of coastal resilience in the form of wave
dissipation, lowering ice pile-up/ride-up risk, and protection from rapid erosion.


identifier: Asgharzadehsekhavat, Yoones <https://research.library.mun.ca/view/creator_az/Asgharzadehsekhavat=3AYoones=3A=3A.html>   (2014) A framework for information integration using ontological foundations.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: With the increasing amount of data, ability to integrate information has always been a competitive advantage in information management. Semantic heterogeneity reconciliation is an important challenge of many information interoperability applications such as data exchange and data integration. In spite of a large amount of research in this area, the lack of theoretical foundations behind semantic heterogeneity reconciliation techniques has resulted in many ad-hoc approaches. In this thesis, I address this issue by providing ontological foundations for semantic heterogeneity reconciliation in information integration. In particular, I investigate fundamental semantic relations between properties from an ontological point of view and show how one of the basic and natural relations between properties – inferring implicit properties from existing properties – can be used to enhance information integration. These ontological foundations have been exploited in four aspects of information integration. First, I propose novel algorithms for semantic enrichment of schema mappings. Second, using correspondences between similar properties at different levels of abstraction, I propose a configurable data integration system, in which query rewriting techniques allows the tradeoff between accuracy and completeness in query answering. Third, to keep the semantics in data exchange, I propose an entity preserving data exchange approach that reflects source entities in the target independent of classification of entities. Finally, to improve the efficiency of the data exchange approach proposed in this thesis, I propose an extended model of the column-store model called sliced column store. Working prototypes of the techniques proposed in this thesis are implemented to show the feasibility of realizing these techniques. Experiments that have been performed using various datasets show the techniques proposed in this thesis outperform many existing techniques in terms of ability to handle semantic heterogeneities and performance of information exchange.


identifier: Rahman, Md. Sadiqur <https://research.library.mun.ca/view/creator_az/Rahman=3AMd=2E_Sadiqur=3A=3A.html>   (2014) Tandem mass spectrometry studies of β-D-N-glycopyranosides derivatives and the wheat straw lignin.  Masters thesis, Memorial University of Newfoundland.

abstract:
Mass spectrometry is the tool of choice for the analysis of complex biomolecules
and therefore it has been used for identification and characterization of different
biological molecules such as oligosaccharides and glycoconjugates. In this thesis the first
aim of this study was to use three different techniques to analyze the synthetic biological
bivalent N-glycosides. The gas phase fragmentation of this series of synthetic bivalent Nglycosides
(1-6) have been studied by electrospray ionization (ESI), matrix assisted laser
desorption ionization (MALDI) mass spectrometry and quadrupole ion-trap mass
spectrometry, in conjunction with using different “in-time” and “in-space” tandem mass
spectrometers.
In the second aim of this study, MALDI-TOF/TOF-MS and MALDI-TOF/TOFMS/
MS analyses were used which have proven to be a powerful analytical tool capable
for ionizing both small and large lignin oligomers. The MALDI mass spectra of the
CIMV (CIMV is a world first for the manufacture of whitened paper pulp, sulfur free
linear lignin and xylose syrup from annual fiber crops and hardwood).-extracted wheat
straw lignin were recorded in the positive ion mode with a high-resolution MALDITOF/
TOF-MS/MS. The positive ion mode MALDI-MS indicated the exact presence of a
multitude of oligomers, from which 30 specific oligomeric ions were identified. The
structural characterization of this novel series of 30 specific related oligomers was
achieved by calculating the exact molecular masses measured by high-resolution
MALDI-TOF-MS. High-energy collision-induced dissociation tandem mass
spectrometric analyses MALDI-CID-TOF/TOF-MS/MS provided unique dissociation patterns of the complete series of novel precursor ions. These MS/MS analyses provided
diagnostic product ions, which enabled us to determination of the exact molecular
structures and arrangement of the selected 30 different related ionic species.


identifier: Hindemith, Marisa Ann <https://research.library.mun.ca/view/creator_az/Hindemith=3AMarisa_Ann=3A=3A.html>   (2014) Petrography and geochemistry of hydrothermally altered volcanic rocks metamorphosed at granulite-facies conditions: an example from the central Grenville province.  Masters thesis, Memorial University of Newfoundland.

abstract:
A layered bimodal sequence (LBS) was recently recognized in the Canyon
domain in the central Grenville Province, and inferred to be the extrusive products of riftrelated
magmatism at ~1.25 Ga. The LBS consists of alternating felsic and mafic rocks
with, locally, pre-metamorphic hydrothermally altered zones (HAZ), and were
metamorphosed to mid-P granulite-facies conditions during the Grenvillian orogeny (~1
Ga). In the HAZ, characteristic felsic rocks are pink and white gneisses, grading into
varieties of aluminous gneisses and garnetites. This thesis is a petrographic and
geochemical study of these rocks, and provides new insights on the protoliths, the
hydrothermal alteration, and the subsequent metamorphic overprint.
The most informative microstructures were observed in the aluminous gneisses, as
for instance: (a) relics of bipyramidal quartz phenocrysts indicative of a volcanic
precursor; (b) aluminous nodules, seams of sillimanite, and concordant quartz veins
representing relict former pathways of hydrothermal fluid; and (c) quartz-K-feldsparplagioclase-
garnet-sillimanite-biotite mineral assemblages with textural evidence of
partial melting, and consistent with a mid-P granulite-facies metamorphic overprint. In
addition, slightly elevated contents of Mn in garnet, Zn in spinel, and Ba in biotite and Kfeldspar
in some rocks are consistent with hydrothermal fluid activity.
Geochemical data placed the following constraints on the protoliths: (a) in terms
of immobile elements, the chemical protoliths are characterized as rhyolite/dacite to
basalt/andesite, and most likely formed in an arc to rifted arc setting; (b) alteration indices
(>50) and evidence in most rocks showing K-metasomatism and Na-depletion attest to
hydrothermal alteration; and (c) the overall increase in contents of Al, K (with the exception of the garnetites), immobile and trace elements suggests seafloor alteration,
most common to VMS environments.


identifier: Hauser, Tristan Paul <https://research.library.mun.ca/view/creator_az/Hauser=3ATristan_Paul=3A=3A.html>   (2014) Probabilistic uncertainty quantification and simulation for climate modelling.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
This thesis addresses probabilistic approaches to uncertainty quantification, within the
context of climate science. For the results of climate studies to be appropriately understood
and applied, it is necessary to quantify their relation to the observable world.
Probability theory provides a formal approach that can be applied commonly to the
encountered uncertainties. Three studies are presented within. The first addresses the
Bayesian calibration of climate simulators. This method quantifies simulation uncertainties
by taking into account inherent model and observation uncertainties. Here an
alternative method for the fast statistical emulators of model parameter relationships
is tested, as well as a rigorous approach to quantifying model limitations. The second
examines probabilistic methods for identifying regional climatological features and
quantifying the related uncertainties. Such features serve as a basis of comparison
for climate simulations, as well as defining, to some extent, how we view evolution
of the modern climate. Here typical patterns are recreated using an approach that
quantifies uncertainty in the data analysis. As well, temporal shifts in the distribution
of these features and their relation to ocean variability is explored. The third
study experiments with approaches to regional stochastic weather generation. There
is an inherent residual between climate simulations and large scale features, and regional
variability seen on daily timescales. Weather generators provide an error model
to quantify this uncertainty, and define features and variability underrepresented in global simulations. A method is developed which allows for regional, rather than site
specific, simulation for the North Atlantic, a region of very active and varied atmospheric
activity. In total, the work presented within covers the range of uncertainty
types that must be considered by climate studies. The individual articles addresses
contemporary questions concerning appropriate methods and implementation for their
probabilistic quantification.


identifier: Marshall, Jonathan Anthony Fort <https://research.library.mun.ca/view/creator_az/Marshall=3AJonathan_Anthony_Fort=3A=3A.html>   (2014) Inverted identities: F.W.J. Schelling’s philosophies of Nature and of Spirit.  Masters thesis, Memorial University of Newfoundland.

abstract:
The pivot of this thesis is F.W.J. Schelling’s (1775-1854) proposition that Nature is to be
conceived as visible Spirit, and Spirit as invisible Nature. In light of Schelling’s
distinction, this thesis will attempt to restate the purposes of Schelling’s
Naturephilosophy and transcendental idealism in light of one another. My contention is
that Schelling’s early philosophy is generally concerned with the nature of manifestation
and specifically with the manifestation of the Absolute according to the dual aspects of
Nature and Spirit. Schelling explains manifestation as a process or transition from a state
of infinite activity or productivity to finite product. To demonstrate this point, I will
consider Schelling’s ideas, first, on the possibility and manifestation of Nature (Chapter I)
and, second, on the possibility and manifestation of Spirit (Chapter II). In exploring the
former, I will concentrate on the First Outline of a System of the Philosophy of Nature
(1799); in terms of the latter, I will focus on the System of Transcendental Idealism
(1800). Grounding my interpretation in Schelling’s proposition concerning the visibility
and invisibility of Nature and Spirit, in the Conclusion I will interpret Nature and Spirit as
inverted identities, i.e. as a bond of opposing organic and spiritual potencies, and outline
how each identity is directed toward manifesting the Absolute according to its own inner
necessity. By interpreting Nature and Spirit in this way, I attempt to show that their
purposes are to manifest their counterpart as an expression of the Absolute—the
underlying original identity.


identifier: Mostafa, Ahmed A. <https://research.library.mun.ca/view/creator_az/Mostafa=3AAhmed_A=2E=3A=3A.html>   (2014) Mechanisms involved in the regulation of human leukocyte antigen class II expression in estrogen receptor alpha positive and estrogen receptor alpha negative breast cancer cells.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Human leukocyte antigen (HLA) class II molecules [HLA-DR, HLA-DM,
invariant chain (Ii)] are crucial for anti-tumor immune responses. Regulation of HLA
class II occurs mainly at the transcription level through the class II transactivator (CIITA)
that is induced by interferon gamma (IFN-γ). In addition, mitogen activation protein
kinase (MAPK) regulates HLA class II expression at the protein and the transcriptional
level in antigen presenting cells (APC) and some tumors.
Previously, our laboratory reported that tumor cell expression of HLA-DR in
breast cancer correlated with decreased estrogen receptor (ER) levels and younger age at
diagnosis. In this study we used established ERα⁺ and ERα- breast cancer cell lines
(BCCL) from ATTC and showed that, estradiol (E₂) resulted in down regulation of HLADR
expression in MCF-7 (ERα⁺) and BT-474 (ERα⁺), but not in T47-D (ERα⁺), nor in
SK-BR-3 (ERα⁻) and MDA-MB-231 (ERα⁻). Altogether, these data suggest that the E2-
ER pathway plays a significant role in HLA class II expression in breast carcinoma. We
further postulated that the higher expression of HLA-DR in ERα-, as compared to ERα⁺
breast cancer cells is due to MAPK activation.
To study the mechanism(s) involved in the regulation of HLA class II expression
in breast cancer cells, we used a cell line model of an ERα⁺ cell line, MC2 (MDA-MB-
231 transfected with the wild type ERα gene) and ERα- cell line, VC5 (MDA-MB-231
transfected with the empty vector). These cells were subjected to different hormonal
treatments [E₂, Tamoxifen (TAM) and Fulvestrant (ICI 182,780)], cytokine treatments (IFN-γ) and MAPK inhibitors (U0126, SP 600125 and SB 202190), to determine their
effects on HLA class II regulation.
Inducible CIITA and HLA class II expression were markedly reduced at the
protein and transcription levels in MC2, compared to VC5. Moreover, CIITA and IFN-γ
activated sequence (GAS) luciferase activities were reduced in MC2 and were further
inhibited by E₂-treatment. In parallel, E₂ decreased GAS luciferase activity in the same
pattern in MCF-7 (ERα⁺) and BT-474 (ERα⁺). The MAPK pathway played a role in
HLA-DR surface expression in the breast cancer cell lines (BCCL) regardless of ERα
status. In aggregate, these results indicate that the E₂-ER and MAPK signaling pathways
modulate HLA class II expression in BCCL.


identifier: Mahlum, Shad <https://research.library.mun.ca/view/creator_az/Mahlum=3AShad=3A=3A.html>   (2014) What comes down must go up: assessing the validity of stream connectivity techniques with the use of in situ fish movement and stream community metrics.  Masters thesis, Memorial University of Newfoundland.

abstract:
Stream fragmentation is considered an important factor in the persistence of
many aquatic species. My research is focused on validating local and riverscape metrics
of connectivity to help assist in evaluating their efficacy. I used in situ brook trout
(Salvelinus fontinalis) movements in Terra Nova National Park, Newfoundland, to
determine the accuracy of local scale fish passability metrics and I used community
assemblages in southern Ontario to evaluate a structural index used to measure the
connectedness of a system. I found that local scales of passability were conservative in
predicting brook trout passage and failed to consistently predict fish movement.
Furthermore, I found that riverscape scale structural indices have power in explaining
both community structure, species presence/absence and abundance. The results from my
research will provide researchers future areas of study along with confidence in structural
indices for the evaluation of watershed level connectivity metrics.


identifier: Ayre, D. Craig <https://research.library.mun.ca/view/creator_az/Ayre=3AD=2E_Craig=3A=3A.html>   (2014) The mechanism of CD24-mediated apoptosis in bone marrow-derived early B-cells.  Masters thesis, Memorial University of Newfoundland.

abstract:
B cells are the antibody producing cells of the mammalian immune system and are
formed through a differentiation and maturation process in the bone marrow. The
glycophosphatidylinositol (GPI)-linked cell surface receptor CD24 causes apoptosis in
the earliest B-cell developmental stages. As it has no transmembrane domain, the signal
transduction mechanism of CD24 is not well understood and is the focus of this thesis.
Using a bioinformatics approach, several genes were identified that are involved in
apoptosis, cytoskeletal organization and endocytosis and whose pattern of expression
tightly correlated with CD24. In addition, it was shown that extensive crosslinking of
CD24 is required to mediate apoptosis in primary B-cells. Moreover, following
crosslinking, CD24 protein is rapidly transported to the cell surface and then endocytosed.
Lastly, it was observed that CD24 mediates homeotypic adhesion and is closely
associated with cell-cell junctions. These data may provide new insight into the
mechanism by which GPI-linked receptors activate intracellular signalling pathways.


identifier: Sun, Bingrui <https://research.library.mun.ca/view/creator_az/Sun=3ABingrui=3A=3A.html>   (2014) Bivariate multinomial models.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

title: Bivariate multinomial models

abstract:
Analyzing multivariate categorical data is an important and practical research topic.
Even though there exist many studies on the analysis of bivariate (possibly multivariate)
categorical data, the modeling of correlations among the bivariate multinomial
variables is, however, not adequately addressed. In this thesis, we develop three correlation
models for bivariate multinomial data. The first model accommodates fully
specified marginal probabilities and uses a bivariate normal type conditional probability
relationship to model the correlations of the bivariate multinomial variables.
Next, we propose a random effects based familial type model to accommodate the
correlations, where conditional on the random effects the marginal probabilities are
fully specified. The third model is developed by considering the marginal probabilities
of one variable as fully specified, and using conditional multinomial logistic type
probability model to accommodate correlations. The estimation of the parameters for
all three models is discussed in details through both simulation studies and analysis
of real data.


identifier: Song, Andrew Moonseok <https://research.library.mun.ca/view/creator_az/Song=3AAndrew_Moonseok=3A=3A.html>   (2014) Governance in transition: exploring people’s mindset and institutional matches towards a governable coastal fisheries in South Korea.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Many fisheries challenges are closely linked to the choice of governance style, with the typical top-down, hierarchical mode unable to effectively cope with ever more diverse, complex, dynamic, and multi-scalar fisheries reality. Subsequently, transition towards a co-management type has been a popular trend in many coastal fisheries around the world. Although this initiative has shown potential in bringing positive outcomes to local fishery and communities, in many cases the transition process has proved to be a ‘wicked’ undertaking with multiple intricate issues emerging to complicate the efforts and to frustrate community members, practitioners and researchers alike. Recognizing the need for alternate insights into these implementation challenges, this thesis argues for a thorough understanding of governance change by highlighting the importance of ‘meta-order governance’ elements, such as values, images and principles, of various fisheries stakeholders in shaping its outcomes. Further, it calls for an investigation of the institutional aspect of governance to underscore the structural elements being promoted in the transition and to elucidate its fit with the meta-level notions of governance actors, including the local fishers affected by them. These two areas of inquiry are inspired by the interactive governance theory and the governability concept, which emphasizes the need to examine all aspects of a governance system and their interconnectivity in order to solve problems and create societal opportunities. A government-initiated fisheries co-management program currently underway in South Korea, called ‘Jayul’, forms the context in which this new focus is applied. The main research question this thesis aims to explore is “how does the governance change instituted by the central government align with what fishers fundamentally conceive to be important and desirable for the fishery?” In addition to theoretical conceptualization, the research has a strong emphasis on method development, given the knowledge gap in the elicitation of values, images and principles in empirical settings. The approach advanced here can be extended to examine the implementation of other fisheries governance initiatives, such as marine protected areas, individual transferable quotas and seafood certification schemes, to provide a useful way of understanding their standings and prospects. In the process, new insights may surface, challenging and improving the core ideas raised in this research.


identifier: Riedlsperger, Rudolf <https://research.library.mun.ca/view/creator_az/Riedlsperger=3ARudolf=3A=3A.html>   (2014) Vulnerability to changes in winter trails and travelling: a case study from Nunatsiavut.  Masters thesis, Memorial University of Newfoundland.

abstract:
This thesis explores the vulnerability of Nunatsiavut residents to changes in winter trails
and travelling on land based and sea ice trails, brought about by weather and climate
stresses in combination with livelihood changes. Data were collected using map
biography interviews with 28 community members of Makkovik and Postville between
January and March 2012. Participant observation and regional climate data were utilized
to gain contextual understanding of the data collected during map biography interviews.
Accessible winter trails are critical to the livelihoods of the communities. They provide
access to the land and ice and facilitate subsistence activities such as hunting and
collecting firewood. Winter trails also permit overland travel between communities that
are not connected by conventional roads. Residents are currently affected by changes
related to winter trails and travelling considered outside the range of previously
experienced variability. Physical changes in winter trails are brought about mainly by a
deterioration of snow and ice conditions, as well as changes in wildlife availability. Sea
ice routes are more affected than land based routes. Interview participants reported
changes in the act and experience of travelling due to a compromised sense of safety
while being on winter trails, and due to changes in trail use activities away from
subsistence participation towards recreational and sports activities in combination with
technological changes. These changes have immediate, tangible effects on community
and individual livelihoods, including negative economic implications for households and
threats to livelihood security, health and safety for individuals. There are also intangible
dimensions of change as unimpeded access to the land and ice is further linked to a sense
of place, identity, purpose, and stewardship for community members. Currently, ad-hoc
coping mechanisms outweigh planned adaptation strategies. Communities and individuals
respond to changes in winter trails and travelling through adaptation of trail routes and
improved trail maintenance and equipment, adaptation of subsistence activities, proactive
mobilization of traditional knowledge and skills, as well as collaboration and sharing
among individuals and communities. Barriers to adaptation include livelihood changes
undermining subsistence participation, constraints in financial and human resources, and
bureaucratic stipulations such as mandatory hunting and trapping permits, restrictions in
hunting and trapping areas, and liability questions. Potential resource development
projects and initiatives to boost adventure tourism in the winter pose both future
vulnerabilities in terms of additional disruption of travel routes and subsistence activities,
as well as chances to enhance adaptive capacity through economic growth and the
capitalization on traditional knowledge and skills. Accessible winter trails will remain
critical for the continuity of traditional knowledge and skills, livelihood security, health,
and subjective wellbeing of individuals and communities.


identifier: Zadeh, Abdulah A. <https://research.library.mun.ca/view/creator_az/Zadeh=3AAbdulah_A=2E=3A=3A.html>   (2014) Power analysis of stream ciphers based on feedback shift registers.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
In recent days, many cryptographic devices, such as smart-cards and cell phones,
are widely accessible to many people. However, wide access to cryptographic devices
makes them vulnerable to side channel analysis (SCA) attack. As such, there is a
high demand for research in the field of side channel analysis. Although SCA attacks
have been extensively applied to block ciphers, only a limited amount of research
is available on the effectiveness of side channel analysis on stream ciphers. In this
dissertation, we study SCA attacks on stream ciphers and develop some cryptanalysis
methods for applying the attacks effectively on practical realization of stream ciphers.
The proposed power analysis attacks were first theoretically applied to stream
ciphers with a linear feedback shift register (LFSR) and nonlinear filtering function,
a structure referred to as a filter generator. Since typical stream ciphers include
multiple LFSRs and/or nonlinear feedback shift registers (NLFSRs), we first consider
the extension of the typical power analysis attack to stream ciphers with multiple
LFSRs and a nonlinear combining function, known as a combination generator. Then,
the attack is extended to stream ciphers based on nonlinear feedback shift registers
(NLFSRs) and stream ciphers with multiple NLFSRs and LFSRs.
In most papers related to applying side channel analysis attacks to stream ciphers,
the authors ignore the effect of noise and inaccurate measurements. This
limits the applicability of their methods for real applications. This dissertation has
developed side channel analysis attacks on feedback shift register (FSR) based stream ciphers with consideration of inaccurate measurement effects. At first, we have developed
the attack for stream ciphers based on an individual LFSR and/or NLFSR,
while the power measurements are inaccurate and they do not exactly match the
theoretical values. Later, considering inaccurate measurements, we have developed
power analysis of stream ciphers with multiple LFSRs and NLFSRs.
Finally, we consider combining SCA with some classical attacks on stream ciphers
based on mathematical and statistical approaches to recover key or state bits of the
stream ciphers. Hence, we have extended the correlation attack, fast correlation
attack and algebraic attack, which are mathematical (or classical) attacks, such that
they are applicable with side channel analysis. The proposed methods are validated
through implementation on a practical cryptographic algorithm, the Grain stream
cipher.
The practical investigations in this dissertation are done using simulated ASIC
circuits. To simulate the behavior of ASIC circuits, we have implemented them
using Cadence Virtuoso Spectre Circuit Simulator version 5.10.41. All the circuits
including LFSR, NLFSR and Grain, are prototyped in TSMC 180 nm standard cell
CMOS technology. The simulated power consumptions are used to investigate the
practical application of the proposed attacks.
This dissertation shows power analysis is a powerful technique to attack stream
ciphers and recover state bits and/or the key of the stream ciphers. Furthermore,
combining classical methods and measured power data can significantly reduce the
complexity of an attack of a stream cipher and countermeasure methods should be
considered in hardware implementation of stream ciphers, to make them resistant to
side channel analysis.


identifier: Ghobadi, Mehdi <https://research.library.mun.ca/view/creator_az/Ghobadi=3AMehdi=3A=3A.html>   (2014) Experimental measurement and modelling of heat transfer in spiral and curved channels.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Heat transfer enhancement is desired in most thermal applications. In general, there
are two methods to improve the heat transfer rate: active and passive techniques Active
techniques are based on external forces such as electro-osmosis, magnetic stirring,
etc. to perform the augmentation. Active techniques are effective; however, they are
not always easy to implement with other components in a system. They also increase
the total cost of the system manufacturing. On the other hand, passive techniques
employ fluid additives or special surface geometry. Using the surface geometry approach
is easier, cheaper and does not interfere with other components in the system.
Surface modification or additional devices incorporated in the stream are two passive
augmentation techniques. With these techniques, the existing boundary layer is disturbed
and the heat transfer performance is improved. However, pressure drop is also
increased. Curved geometry is one of the passive heat transfer enhancement methods
that fit several heat transfer applications such as: compact heat exchangers, steam
boilers, gas turbine blades, electronics cooling, refrigeration and etc. This dissertation
contains eight chapters.. Chapter one is the introduction and shows the originality,
novelty and importance of the work. Chapter two reviews the literatures on the heat
transfer and the pressure drop correlations in curved circular tubes. In chapters three
and four, two heat sinks having spiral and straight channel geometry engraved on
them are examined experimentally. Heat transfer and pressure drop inside them are measured, and reduced to apply two existing correlations to predict their behaviour
analytically. In chapters five, six and seven, thermal and flow behaviour inside curved
geometry are studied experimentally. The calculated heat transfer coefficient and
pressure drop are compared to the existing models. Comparing the predicted Nusselt
number from the existing models, poor accuracy was observed in the region of
5 < Pr < 15. Finally, in chapters six and seven two new asymptotic correlations are
proposed to calculate the heat transfer and the pressure drop inside mini scale curved
and coiled tubes.


identifier: Mulej Tlhaolang, Jasna <https://research.library.mun.ca/view/creator_az/Mulej_Tlhaolang=3AJasna=3A=3A.html>   (2014) The impact of a wolf conservation project on attitudes of the public, hunters and farmers toward wolves in Slovenia.  Masters thesis, Memorial University of Newfoundland.

abstract: For successful conservation of large carnivores, charismatic and controversial species, ensuring human tolerance is essential. Therefore, wolf conservation projects aim to improve both the biological and socio-political conditions. I used a mixed methods approach to explore the effectiveness of a wolf conservation project in improving the coexistence of wolves and humans in Slovenia. I evaluated the effectiveness of the project to improve the social acceptance of wolves in Slovenia by quantitatively investigating attitude change, an indicator of social acceptance, over a two year period. Although attitudes toward wolves generally seem to have remained stable, I documented change in beliefs about the extent of wolf-caused damage and actual and acceptable wolf population size, as well as changes in individual statements about attitudes toward wolf management. To explore the role of public participation in improved wolf conservation, I carried out 19 semi-structured interviews with a range of participants that were involved in different public involvement actions. For the basis of the evaluation of the process, Reed’s (2008) criteria for effective stakeholder participation in environmental management were used. I found considerable evidence of learning through participation and increased social capital that positively influences the coexistence between wolves and humans in Slovenia.


identifier: Gallant, Emily-Jean <https://research.library.mun.ca/view/creator_az/Gallant=3AEmily-Jean=3A=3A.html>   (2014) Heidegger’s primordial temporality: a hermeneutical analysis of the phenomenology of time.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis explores the phenomenology of time according to Martin Heidegger by taking a hermeneutical detour through Saint Augustine‘s Confessions and Paul‘s Letters to the Thessalonians. In order to adequately discuss Heidegger‘s notion of time we first require a historical mediation, i.e., to go back to and interpret the time phenomenon by engaging in a hermeneutical analysis. Therefore, the method that Heidegger adopts (the hermeneutical situation) is the method that I adopt throughout. It is important to note that I will be conducting my own phenomenology, i.e., I will be phenomenologizing in an attempt to better understand the time phenomenon in relation to factical life experience. This allows me to discuss Heidegger‘s account of primordial temporality, the foundations of which can be hermeneutically uncovered in the past.


identifier: Beveridge, Stephanie <https://research.library.mun.ca/view/creator_az/Beveridge=3AStephanie=3A=3A.html>   (2014) Personal and environmental barriers and facilitators to social participation among Canadian adults with mobility disabilities.  Masters thesis, Memorial University of Newfoundland.

abstract: The prevalence of mobility disabilities is increasing in part due to the ageing population. People with mobility disabilities are at an increased risk of reduced social participation and activity limitations and thus reduced well-being. Social participation is important to one’s health and quality of life. The purpose of this secondary data analysis study was to explore factors (personal and environmental) that were most influential to social participation levels among adults aged 20-64 (N = 6105). Statistics Canada’s 2006 Participation and Activity Limitation Survey was used. Data analysis included descriptives of sociodemographics, personal and environmental barriers and facilitators and logistic multinominal univariate and multivariate regression. There was no clear trend as to whether personal or environmental factors were the strongest predictors to social participation. The results of this study suggest a complex interaction between personal and environmental factors that constrain and promote social participation; it provides the foundation for further empirical research to increase activity participation and mobility.


identifier: Dagenais, Justine S. <https://research.library.mun.ca/view/creator_az/Dagenais=3AJustine_S=2E=3A=3A.html>   (2014) Effects of normal force, velocity and lubrication on ice friction at high pressures.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis focuses on understanding and explaining the behavior of the coefficient of friction for ice against steel in the conditions experienced by ships and offshore structures designed for Polar Regions. Friction tests were executed with a 30⁰, 25 cm diameter, conical sample of ice and a sandblasted stainless steel plate using a rotational ‘turntable shaped’ apparatus in a large cold room to investigate the effect of the normal force, contact area, pressure velocity and lubrication. Pressures up to 1.4 MPa were measured in the results and the ice was observed to fail by a combination of crushing and abrasion. A design of experiments analysis was performed on the results. This analysis indicated that there was almost no variation in friction coefficient associated with changing pressure, contact area, velocity and lubrication. Using conical ice samples, which changed contact areas during the tests, demonstrated that trends observed in past ice friction studies may not be fully representative of ice interactions with structures since ice pieces found at sea are never of perfect regular shape.


identifier: Pike, Kelly-Anne <https://research.library.mun.ca/view/creator_az/Pike=3AKelly-Anne=3A=3A.html>   (2014) Bearing identity: a biocultural analysis of human remains from Old Mission Point (C1Dq-1), New Brunswick.  Masters thesis, Memorial University of Newfoundland.

abstract:
This thesis focuses on the biocultural analysis of human remains recovered from the site of Old Mission Point (C1Dq-1), located in northern New Brunswick. For centuries, the site of Old Mission Point was home to prehistoric northern Mi’gmaq peoples of the Maritimes region, and later, became an important seventeenth-century Récollect and Jesuit missionary settlement. The first research objective of this thesis was to explore the concept of identity, in both its biological and social forms, through the assessment of the skeletal assemblage. The second thesis research objective was, upon identifying the ancestry of the remains, to investigate those factors attributed to the maintenance and transformation of identity throughout the life course. This goal extended into understanding possible changes in identity for the dead, and whether burial environment, funerary rites, and afterlife beliefs affected or reflected the social standing of the deceased. Ethnohistorical accounts and oral traditions, archaeological data, and morphological and stable isotope analyses of the remains were all used to gather the information needed to fulfill these research objectives.
The human remains were identified as Native American in ancestry, and date to the Early Woodland period (BC 500 – AD 300), as well as the Late Woodland (AD 1000 – 1534) and Early Historic (AD 1534 – AD 1755) periods. The skeletal assemblage consisted of both male and female adults, and several young juvenile individuals. The social and biological statuses of these individuals, as conveyed by the ethnohistorical accounts, influenced the interpretation of the morphological assessment and carbon and nitrogen stable isotope analysis results. However, it was found that discrepancies existed between the osteological, archaeological and ethnohistorical evidence, promoting the use of multiple lines-of-evidence and the tenents of the biocultural approach. The biological versus social identity trade-offs experienced by these individuals over the life course is interpreted as affecting Mi’gmaq social status, health, diet, and juvenile weaning practices. Moreover, it was found that the living identity of the deceased ultimately affected the manner and space in which the dead were buried. This evidence supports the idea that the living identity of the dead remained intact even after crossing-over into the afterlife, with social roles and responsibilities continuing on in accordance with Mi’gmaq cosmological beliefs. It is concluded that the formation, maintenance, and metamorphosis of identity over the course of life was integral to the lifeways and deathways of the precontact and postcontact Mi’gmaq.


identifier: Hassan, Junaid <https://research.library.mun.ca/view/creator_az/Hassan=3AJunaid=3A=3A.html>   (2014) A predictive model to assess dust explosion occurrence.  Masters thesis, Memorial University of Newfoundland.

abstract:
The danger of a dust explosion is difficult to avoid in process facilities where combustible
dusts are handled. To develop effective prevention and mitigation strategies,
it is very important to understand the interaction among dust explosion controlling
parameters and to assess the likelihood of an dust explosion occurrence. Six controlling
parameters ( Particle Diameter, Minimum Ignition Energy, Minimum Explosible
Concentration, Minimum Ignition Temperature, Limiting Oxygen Concentration and
Explosion Pressure) are identified to model a predictive tool which can assess the
likelihood of dust explosion in a given operating condition. Experiments have been
conducted by the dust explosion researcher to understand the characteristics of these
parameters and the generated data has a substantial scope in estimating dust explosion
probability with the use of probabilistic approach. A conceptual framework is
developed to use the existing experimental data on dust explosion parameter to assess
the dust explosion prediction in a given facility. The model is further extended with
considering dust classes and a detailed implementation in specific process industries
are discussed with case studies. The proposed model can assess the dust explosion
probability in a given operating condition at a specific process facility. The assessment
can be very helpful to strategies effective prevention and mitigating measures
in process industries. Three case studies are discussed in this study to demonstrate
the real life application of the model.


identifier: Jackson, Stephen O. <https://research.library.mun.ca/view/creator_az/Jackson=3AStephen_O=2E=3A=3A.html>   (2014) Romancing 'the Rock': problematizing notions of welcoming immigrants and cultural diversification amidst strong Newfoundland identity structures.  Masters thesis, Memorial University of Newfoundland.

abstract: Using Critical Discourse Analysis in a critical realist framework, I review the Government of Newfoundland and Labrador’s immigration strategy, CBC programming on immigrants, and the Lanier Phillips story. I explore how notions of the ‘true Newfoundlander’, ‘newcomers’ and ‘settlement’ are constructed. The contexts in which real or manipulated foundational myths of the Newfoundland experience are constructed often shows ‘Newfoundland culture’ as both a business and an often prescribed series of character traits and way of life developed in reaction to certain constructs of the ‘outsider’. Current narrow definitions of ‘economic’, ‘social’ and ‘cultural’ development, combined with homogenizing terms of ‘uniqueness’ and the persistent myth that all patriots who move away do so reluctantly, place immigrants in exoticized and marginalized positions whose ‘welcome’ may be limited and dependent on their ability to assimilate and act as proponents of these constructed images. This is offered as one reason why many immigrants may move, alongside non-immigrants, for reasons other than economic. This thesis illustrates a need for deeper study into the immigrant experience and a more emancipated discussion of how new people can be allowed to participate productively, justly and equitably in this province.


identifier: Sooley-Dyke, Gail <https://research.library.mun.ca/view/creator_az/Sooley-Dyke=3AGail=3A=3A.html>   (2014) Perceptions of early career teachers regarding inclusion.  Masters thesis, Memorial University of Newfoundland.

abstract: This research study examined early career teachers’ perceptions of the inclusion of students with special education needs in the general education classroom. Six participants were included in this study. Three were students enrolled in the Intermediate Secondary Education program at Memorial University of Newfoundland and three were teachers from a school board in Newfoundland and Labrador. Qualitative methods were used to explore early career teachers’ perceptions of inclusion and in-depth interviews served as the main source of data. The participants in this study indicated that the while teachers generally held a positive view of inclusion, there was confusion about what was meant by inclusive education. The participants suggested several pros and cons of the inclusion of students with special education needs in the general education classroom. The pros included: social benefits of all students, exposure to curriculum, and a decreased stereotyping of students with disabilities. The cons included: teachers’ limited ability to deal with students’ experiencing behavioural difficulties, lack of training to implement inclusive policies, limited resources (including time and human resources) and participants’ perception of increased workloads. There were discrepancies amongst the individual participants regarding the acceptance of students with disabilities; some participants reported high levels of acceptance whereas others described lower levels, especially as students aged. The participants shared that their university programs and/or professional development opportunities were not adequate in preparing them to teach in inclusive environments. These findings suggested that alterations to the implementation process, resources provided, professional development, and university programs may be required to ensure that inclusion is a successful and effective educational reform.


identifier: Halder, Biplab Kumar <https://research.library.mun.ca/view/creator_az/Halder=3ABiplab_Kumar=3A=3A.html>   (2014) Vagueness and identity in David Lewis’ account: foundation for a relaxed epistemology?  Masters thesis, Memorial University of Newfoundland.

abstract: The problem of vagueness and the problem of identity have received immense attention in the history of logic, philosophy of language, and semantics. David Lewis’ modal realism also includes these problems. Particularly, there are two claims in this thesis: firstly, a survey on Lewis’ epistemology shows that the nature of his epistemology is relaxed and secondly, his stance on the problem of vagueness and the problem of identity set the foundation for that relaxed epistemology, especially when he advocates the thesis of semantic indecision in the problem of vagueness, and partial identity and almost identity thesis in the problem of many. A study of Lewis’ ontology, epistemology, and semantics altogether in terms of the issues of identity and vagueness establishes both claims clearly.


identifier: O'Neill, Katharine <https://research.library.mun.ca/view/creator_az/O=27Neill=3AKatharine=3A=3A.html>   (2014) A phonetic study of word-final phenomena in Northern East Cree.  Masters thesis, Memorial University of Newfoundland.

abstract:
Northern East Cree has several /+h/ morphemes, which, when sufxed onto a word add
meanings such as inanimate plurality or animate obviation. Literature on these
/+h/ morphemes captures their historical origins and the grammatical contexts in which
they appear. What current literature has yet to describe, however, is the impressionistic
accent shift, lengthening, and voice quality of word-fnal phenomena that accompany
/+h/ sufxation on to a word. Deviations from predictable accent placement and
uncharacteristically long aspiration are just some of the phenomena noted by both
researchers and speakers.
This thesis is an attempt at addressing such impressionistic observations and
related statements regarding the /+h/ morpheme. More specifcally, I explore the
precise phonetic phenomena that occur word-fnally when a /+h/ morpheme is sufxed
to a word, and the relation of the /+h/ morpheme to shifts in accent placement. The
data from this study ofer a number of intriguing observations. For example, the results
suggest that previous analyses of the /+h/ morphemes' properties are incomplete. I
propose that the /+h/ morphemes may have both segmental and prosodic efects on the
productions of the words that carry these sufxes. Further, I suggest that a full
characterization of this morpheme should involve attention to detail concerning dialectal
variation.


identifier: Shik, John <https://research.library.mun.ca/view/creator_az/Shik=3AJohn=3A=3A.html>   (2014) The relationship between staffing pattern and process of care in patients with chronic kidney disease (CKD) - an analysis of the data from the CANPREVENT clinical trial.  Masters thesis, Memorial University of Newfoundland.

abstract:
Chronic
Kidney
Disease
(CKD)
is
associated
with
much
morbidity
and
mortality
in
the
general
population.
It
not
only
is
a
precursor
for
End-‐stage
renal
disease
(ESRD),
but
also
serves
as
a
significant
risk
factor
for
cardiovascular
disease.
The
care
of
patients
with
CKD
is
complex
and
often
involves
blood
pressure
lowering,
renin-‐angiotensin
system
interruption,
lipid
lowering,
anemia
management,
and
control
of
mineral
metabolism.
Currently,
the
literature
lacks
evidence
and
consensus
regarding
how
best
to
deliver
care
to
this
patient
population.
In
particular,
the
degree
of
specialist
involvement,
care
consistency,
nursing
expertise
and
multidisciplinary
team
involvement
may
all
influence
achievement
of
treatment
targets
and
ultimately
patient
outcomes.
CANPREVENT
was
a
randomized
controlled
multicentre
trial
with
500
subjects
comparing
usual
care
by
a
primary
physician
to
a
model
of
CKD
care
involving
a
nurse
as
a
primary
caregiver
supported
by
a
nephrologist.
This
model
proposes
the
delivery
of
a
chronic
disease
management
clinic
with
multiple
risk
factor
intervention
for
people
with
moderate
chronic
kidney
disease.
By
further
analyzing
data
from
this
trial
across
the
five
trial
sites,
we
examined
whether
differences
in
nursing
educational
background,
and
staffing
consistency
during
the
trial,
all
of
which
differed
by
site,
were
associated
with
achievement
of
treatment
targets
and
surrogate
outcomes.
The
hope
was
that
the
results
would
help
direct
future
care
and
research
into
care
delivery
for
chronic
disease.
In
this
analysis,
no
major
differences
in
the
clinical
practice
patterns
were
detected
amongst
the
interventional
sites.
Overall,
none
of
the
interventional
sites
had
consistently
superior
adherence
rates
for
clinical
interventions.
However,
the
small
number
of
sites
and
the
low
numbers
of
eligible
participants
at
each
site,
reduced
the
power
of
the
analysis.
Based
on
these
results,
no
clear
definite
association
can
be
drawn
between
interventional
sites,
nursing
expertise,
continuity
of
care
and
practice
pattern.


identifier: Yao, Shuaihong <https://research.library.mun.ca/view/creator_az/Yao=3AShuaihong=3A=3A.html>   (2014) Silver biosorption study by using seaweed-based sorbents.  Masters thesis, Memorial University of Newfoundland.

abstract: Biosorption is a green and effective alternative for metal recovery. Few researches on silver biosorption has been conducted by using seaweed species. This thesis conducted investigations into silver biosorption behavior of algae-based biosorbents. Laminaria Japonica and two Fucus species (Fucus spiralis and Fucus vesiculosus) was selected to experience some pretreatments. DOE (design of experiment) was employed to plan and analyze the tests for maximal silver capacity and selectivity between with copper ions. Seaweed species and pretreatments were verified to be the most significant factors in the biosorbent preparation. The silver biosorption on Fucus species was a rapid reaction, time-efficient for industrial application, which kinetic experiment data can be well described by Pseudo-second order equation. The mathematical maximal silver uptake by pretreated Fucus spiralis with acetone is around 78 mg/g at pH of 4.8 and is 120 mg/g at pH of 6.3, based on fitted Langmuir isotherm model. Characterization study of X-ray diffraction confirm the state of silver on the solid sorbent after tests, and Raman spectra and FTIR provided binding information between silver ions and functional groups on the targeted biosorbents. Compared with other reported biosorbent on silver recovery, this study demonstrates the utility of Fucus species as a promising potential candidate for silver biosorption in a competing environment.


identifier: Hobbs, Rod S. <https://research.library.mun.ca/view/creator_az/Hobbs=3ARod_S=2E=3A=3A.html>   (2014) Molecular events in the evolution of freeze resistant fish: type I AFP in cunner (Tautogolabrus adspersus) and type III AFP in the rock gunnel (Pholis gunnellus) and radiated shanny (Ulvaria subbifurcata).  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Type I Antifreeze proteins (AFPs) have been fully characterized in two teleost Orders; Pleuronectiformes and Scorpaeniformes. Results from this study have confirmed that cunner [Tautogolabrus adspersus (Family Labridae)], a member of a third Order (Order Perciformes), also produce a type I AFP. This finding solidifies the hypothesis that type I AFPs are multiphyletic in origin and suggests that they represent remarkable examples of convergent evolution within three Orders of teleost fish. The cunner AFP was purified from blood plasma and found to belong to what is now known as classical type I AFP with their small size (mass = 4095.16 Da), alanine-richness (>57 mol%), high α-helicity (>99%) with the ability to undergo reversible thermal denaturation, 11-amino acid (ThrX10) repeat regions within the primary structure, the capacity to impart a hexagonal bipyramidal shaping to ice crystals and the conservation of an ice binding site found in many of the other type I AFPs. cDNA library sequencing indicated that the protein is produced without a signal sequence yet the translated product of the AFP cDNA suggests that it codes for the AFP isolated from plasma.
Despite the fact that cunner produce AFPs, the AFP concentration within the blood is too low to provide whole body freeze protection. Southern and northern blot analyses carried out in this study establishes that the cunner AFP genes belong to a multigene family that is predominantly expressed in external epithelia (skin and gill filaments). These results support the hypothesis that the survival of cunner in icy waters is attributable in part to epithelial AFPs that help block ice propagation into their interior milieu. In contrast to the cunner, heterospecifics occupying the same habitat have greater freeze protection because they produce AFPs in the liver for export to the plasma as well as in external epithelia. Since the external epithelia would be the first tissue to come into contact with ice it is possible that one of the earliest steps involved in the evolution of freeze resistant fish could have been the expression of AFPs in tissues such as the skin. I suggest that this epithelial-dominant AFP expression represents a primitive stage in AFP evolution and propose that cunner began to inhabit “freeze-risk ecozones” more recently than heterospecifics.
Type III AFPs have been identified in a single suborder of fish (Zoarcoidei). In the eelpouts (family Zoarcoidae) and wolffishes (family Anarhichadidae), freeze protection is accomplished through the cooperation of two distinct groups of AFP isoforms: SP-Sephadex (SP) and QAE-Sephadex (QAE) binding types. Although members from most families within the suborder Zoarcoidei are known to produce type III AFP, the cooperative action between AFP isoforms has not been confirmed outside of these two families. Through sequence analysis of AFP cDNAs isolated in this study, I have confirmed the presence of both SP and QAE type III isoforms in two additional families within this suborder: Pholidae [rock gunnel (Pholis gunnellus)] and Stichaeidae [radiated shanny (Ulvaria subbifurcata)]. These results support the hypothesis that cooperativity between SP and QAE isoforms evolved prior to the divergence of families within the suborder Zoarcoidei.


identifier: Robinson, Christina E. <https://research.library.mun.ca/view/creator_az/Robinson=3AChristina_E=2E=3A=3A.html>   (2014) What lies beneath?: three non-intrusive archaeological surveys to identify dorset Palaeoeskimo dwellings at Phillip's Garden, Port au Choix, Newfoundland.  Masters thesis, Memorial University of Newfoundland.

abstract:
This thesis presents the data from the successful use of three non-intrusive surveys that
created the first complete topographic and subsurface map of the Dorset Palaeoeskimo
site of Phillip’s Garden, Port au Choix, Newfoundland. From this map the number of
identified potential dwellings was increased to 198 from the previously recorded 68
dwellings (Renouf 2011a:132). In addition to increasing the dwelling numbers,
distribution trends were identified that challenge the previous concepts of spatial, social
and chronological organisation of Phillip’s Garden. Furthermore, the ratio of excavated
central depressions to the total area of excavated dwelling structure was identified which
could lead to a potential chronology for central depressions.


identifier: Fahd, Faisal <https://research.library.mun.ca/view/creator_az/Fahd=3AFaisal=3A=3A.html>   (2014) Ecological risk assessment of thiosalts.  Masters thesis, Memorial University of Newfoundland.

title: Ecological risk assessment of thiosalts

abstract:
Thiosalts are sulphur compounds generated in the processing of sulphide ores, which concentrate in the mining wastewater. The most common thiosalt species are thiosulphate, trithionate, and tetrathionate. While thiosalts are not typically toxic, thiosalts can decompose resulting in pH depression.
Current industry practice of periodic checking of the water quality downstream, to assess aquatic risk clearly points to the lack of a comprehensive risk based approach in managing thiosalts. Assessing the aquatic risk to organisms requires predicting thiosalt natural degradation in pond/stream conditions and toxicity data of thiosalt species.
Due to the complex reaction pathways and pH dependence of the various thiosalt degradation reactions, assessing the risk to the environment is challenging. A novel methodology is developed for an aquatic community ‘No Observed Effect Concentration’ (NOEC) based on the limited toxicity data that is available for thiosalts. To analyze the indirect effect of thiosalts on pH, a new exposure model is developed to estimate the residual concentration of thiosalts and pH in the water body. The developed exposure assessment model is based on the understanding of the relationship between acid producing (oxidation) and acid consuming (disproportionation) pathways of thiosalts and their reaction kinetics. The results from this model are incorporated into the thiosalts risk assessment and a case study is used to illustrate the model. In this study, the exposure model predicts that trithionate and tetrathionate will degrade to sulphate ions, hydrogen sulphite ions, sulphite ions and elemental sulfur. The concentration of thiosulfate, trithionate and tetrathionate, initially at 25 mg/L, 40 mg/L and 6 mg/L respectively, decreased over the course of the study. Over the duration of 77 hours, thiosulfate degraded completely, while the estimated residual trithionate and tetrathionate concentrations were 13 mg/L and 5.77 mg/L, respectively. The pH of the undiluted effluent was estimated to decrease from pH 9.2 to pH 5.6 within an hour of the effluent discharge and decreased further to pH 4 over a period of the next 3 days. A framework and methodology developed in this thesis can be utilized to estimate the potential direct and indirect risks of thiosalts exposure to ecological entities.


identifier: Milner, Cameron A. <https://research.library.mun.ca/view/creator_az/Milner=3ACameron_A=2E=3A=3A.html>   (2014) The precontact village at St. Croix (BfDa-1), Nova Scotia: explorations of site size and stratigraphic integrity.  Masters thesis, Memorial University of Newfoundland.

abstract:
The St. Croix site in Hants County, Nova Scotia, offers archaeologists a glimpse
into life among Native communities during the Woodland Period. Within the modern
community of St. Croix, a small clearing in an undisturbed forested area was excavated in
1990 and 1993 and found to be rich in cultural material dating to the full breadth of the
Woodland Period. Field work in 2012 expanded on earlier work by extending the
excavation to the end of the undisturbed forested area and into the larger St. Croix
community. Areas affected by modern activities such as plowing were tested to
determine the quality of the archaeological record after decades of domestic cultivation.
Analyses of recovered ceramics, lithic artifacts and palaeoethnobotanical remains
are comparable to previous work, revealing a site utilized throughout the Woodland
Period. Currently known boundaries of the site within the undisturbed forest area are
extended approximately 60m north and areas once thought irrevocably destroyed are now
archaeologically viable with the discovery of a thin undisturbed occupation layer. St.
Croix continues to represent a place of great archaeological wealth and represents one of
the most important Woodland Period sites in the province.


identifier: Fatima, Shaheen <https://research.library.mun.ca/view/creator_az/Fatima=3AShaheen=3A=3A.html>   (2014) A computational study of biological and optical materials.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
This thesis reports computational studies about protein-ion binding in part I, and
optical properties of organic materials in part II.
It is very difficult to investigate a whole protein computationally. So here I proposed
smaller models to probe protein-ion binding: a short triple helix (triple chain),
a short peptide chain, and individual amino acids. The binding energies, and particularly
the differences in binding energy between Na⁺ and K⁺ ions, do depend on the
model and the constraints. I have applied these models to understand experimental
observations about the distinct roles of Na⁺ and K⁺ in collagen aggregation and fibrillogenesis.
I have calculated the binding energies for the Na⁺ and K⁺ with several
key amino acids in collagen, selected by analysis of collagen sequence, using density
functional theory (DFT).
In part II, I have focused on first and second hyperpolarizabilities of anthraquinoidtype
π-extended tetrathiafulvalene, referred to as TTFAQ, and its analogues. This
project has employed a wide range of functional groups to exploit the electron donor
capability of TTFAQ in order to explore the hyperpolarizabilities of its derivatives. I
have assessed size and charge distribution metrics as predictors for NLO response of
the TTFAQ derivatives.


identifier: Talimi, Vandad <https://research.library.mun.ca/view/creator_az/Talimi=3AVandad=3A=3A.html>   (2014) Numerical modeling of segmented flows at microscales.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
Enhancement in heat transfer at micro scales is an active area of study, followed
by many researchers. Use of non-boiling two phase
flows in the form of segmented

flows has become one of the interesting methods for achieving higher cooling (or mass
transfer) capacities. Segmented
flows (also known as slug
flows, plug
flows, or Taylor

flows) is a series of moving liquid segments which are separated by gas bubbles or
another liquid slugs. These
flows are known as gas-liquid or liquid-liquid two phase

flows, respectively. The effective phenomenon in heat transfer enhancement is internal
circulations inside the liquid slugs, which helps to mix the liquid.
The main focus of the present thesis is on heat transfer of gas-liquid segmented

ows, using numerical simulations based on the concepts of Computational Fluid
Dynamics (CFD). As shown in the literature review, large gaps exist in research which
need further studies. The target of this research is providing details on hydrodynamics
and heat transfer in gas-liquid two phase
flows, which can be helpful in understanding
the whole process better. Based on the literature reviewed, the numerical modeling
can be conducted using single phase or two phase simulations. Both single phase and
two phase numerical simulations have been performed in this research. The research
has also been conducted using fixed and moving frames of reference.
It has been shown that slug
flows with shorter slugs provide greater cooling ca-
pacities compared with long slugs. Furthermore, it has been shown that liquid film
around bubbles reduces the intensity of circulations in liquid slugs and hence reduces
the cooling capacity. Therefore, using hydrophobic wall materials has been suggested.
The key finding of the present research is how the liquid film around bubbles affects
heat transfer, and it has been suggested to include this parameter in the correlations
in the future. The comparison of the results with experimental data and/or exact
analytical solutions throughout the thesis show good agreements.


identifier: Wadden, Danny <https://research.library.mun.ca/view/creator_az/Wadden=3ADanny=3A=3A.html>   (2014) The response of functionally related gut hormones, ghrelin and GLP-1 to overfeeding.  Masters thesis, Memorial University of Newfoundland.

abstract:
Introduction: Ghrelin and glucagon-like peptide-1 (GLP-1) are peripherally secreted
hormones from the gut. GLP-1 is secreted from the distal gastrointestinal tract in
response to a meal and is involved in the insulin response and energy homeostasis.
Ghrelin is secreted mainly from the fundus of the stomach and has been shown to
increase appetite. Although both hormones have been linked to the development of
obesity and diabetes, data is lacking as to how GLP-1 and ghrelin respond to a positive
energy challenge (PEC) and whether the response differs according to obesity status.
Thus the present study was designed to investigate the response of these functionallyrelated
gut hormones to a period of energy surplus (overfeeding).
Methods: A total range of 68-72 young men (68 in the ghrelin study, 72 for GLP-1)
were overfed 70% more calories than baseline requirements for 7 days. Fasting blood
samples, anthropometric measures and body composition utilizing dual-energy X-ray
absorptiometry (DXA) were taken pre- and post- overfeeding. Biochemical markers
measured included glucose, insulin, cholesterol, HDL-C, LDL-C, and triglycerols. Serum
total GLP-1 and acylated ghrelin were measured using enzyme-linked immunosorbent
assays (ELISA) and enzyme immune assays (EIA), respectively.
Results: As expected, serum GLP-1 increased in response to the energy surplus, however
unexpectingly, circulating acylated ghrelin also increased. The increase in both GLP-1
and ghrelin were independent of adiposity status. At baseline, there was no difference in
fasting GLP-1 and ghrelin between the normal weight, overweight, and obese groups. In
the overweight/obese cohort, baseline GLP-1 concentration was negatively associated with HDL-cholesterol and positively associated with triacylglycerols and markers of
insulin resistance. Also in the overweight/obese subjects, a negative relationship was
present between baseline GLP-1 concentration and change in percent gynoid fat. Baseline
acylated ghrelin was inversely correlated with weight and BMI in the normal weight
group and inversely correlated with BMI in the overweight group. Additionally, baseline
acylated ghrelin was negatively associated with change in weight and BMI in the
overweight group and positively associated with the same variables in the obese group.
Percentage change in GLP-1 was positively associated with percentage change in
triacylglycerols in both the normal weight and overweight/obese groups. Percent change
in GLP-1 was negatively correlated with percent change in gynoid fat in the normal
weight group and positively correlated with percent change in cholesterol in the
overweight/obese group.
Conclusion: Serum GLP-1 and ghrelin increased in response to a 7-day overfeeding
period in young Newfoundland men, regardless of obesity status. Our results suggest a
protective role for GLP-1, increasing to counteract the energy surplus. We also suggest
that the increase in ghrelin is attempting to offset the rise in insulin resistance.


identifier: McFarlane Tranquilla, Laura <https://research.library.mun.ca/view/creator_az/McFarlane_Tranquilla=3ALaura=3A=3A.html>   (2014) Ecological segregation of murres (Uria lomvia, Uria aalge) during the nonbreeding season in the northwest Atlantic ocean.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract:
When resources are limited and similar species co-occur, ecological segregation is likely to occur year-round, through spatial, temporal, behavioural and/or dietary segregation. This study investigates year-round ecological segregation between partially sympatric, congeneric Thick-billed Murres (Uria lomvia) and Common Murres (Uria aalge). In the Northwest Atlantic, the species exhibit a latitudinal divergence in breeding distributions. However, both winter in Low Arctic regions, where the potential for spatial overlap is greater than during the breeding period. Given the inaccessibility of murres at sea, the inter- and intra-specific interactions of murres wintering in the Northwest Atlantic have not been previously studied.
Using tracking devices and isotopic analyses, this study integrates spatial and temporal movements during the nonbreeding period, relative overlap of winter habitat, and trophic positions during the nonbreeding period. Thick-billed and Common Murres remained partially segregated throughout the year, with some overlap among particular colony groups. Thick-billed Murres moved over a broad range of latitudes throughout the year, had varied core wintering locations, encountered variable environmental conditions, made variable seasonal movements, and had broad trophic positioning. In comparison, Common Murres concentrated and converged on more narrow wintering areas, where colonies had high spatial overlap, encountered similar environmental conditions with consistent temporal patterns, and occupied similar trophic positions. Habitat segregation occurred mostly spatially; but where spatial overlap was greater, inter-specific dietary segregation increased. Most individual murres (both species) exhibited consistent wintering strategies across 2-3 years, with a few individuals shifting habitats between years. Variation in winter movement patterns stemmed more from between-individual variation (particularly among Thick-billed Murres) than from annual changes within individuals.
Ecological segregation is expressed through more varied movement, habitat use, and diets of Thick-billed Murres, resulting in a wider ecological niche that is related both to the range of available habitat and prey, and to inter-specific competitive interactions with Common Murres. Relative connectivity among species and colonies at wintering sites also has implications for overall population vulnerability to spatially-discrete risks or wintering conditions, which will be greater for the relatively concentrated Common Murres than for more dispersed Thick-billed Murres.


identifier: Musharraf, Mashrura <https://research.library.mun.ca/view/creator_az/Musharraf=3AMashrura=3A=3A.html>   (2014) Bayesian network approach to human reliability analysis (HRA) at offshore operations.  Masters thesis, Memorial University of Newfoundland.

abstract: This thesis presents a quantitative approach to human reliability analysis (HRA) in offshore emergency conditions. Most of the traditional HRA methods use expert judgment techniques as human performance data for emergency situations are not readily available. Expert judgment suffers from uncertainty, incompleteness and when collected from multiple experts, may have conflicting views. This thesis investigates these limitations and presents a proper aggregation method to combine multiple expert judgments using Fuzzy Theory to handle the uncertainty and Evidence Theory to handle the incompleteness and conflict. Furthermore, the traditional approaches of HRA suffer from the unrealistic assumption of independence among different performance shaping factors (PSFs) and associated actions. This thesis addresses this issue using the Bayesian network (BN) approach which can represent the interdependencies among different PSFs and associated actions in a direct and structured way. The integration of Fuzzy Theory and Evidence Theory to the BN approach gives an HRA model that can better estimate the success or failure likelihood of personnel in offshore emergency conditions. Incorporation of environmental factors makes the model applicable for offshore emergencies occurring in harsh environments. Finally the thesis presents a new methodology to collect human performance data using a virtual environment. Using the collected data, a simplified BN model of offshore emergency evacuations is tested and verified.


identifier: Lamont, Matthew G. <https://research.library.mun.ca/view/creator_az/Lamont=3AMatthew_G=2E=3A=3A.html>   (2014) Altered calcium signaling in the granule cell layer of ataxic mutant mice.  Masters thesis, Memorial University of Newfoundland.

abstract: The waddles mouse is characterized by a namesake waddling “side-to-side” gait, which is the result of a deficiency in the enzyme carbonic anhydrase type 8 known to inhibit the binding of inositol 1,4,5-trisphosphate to receptors on intracellular calcium stores. Behavioral experiments were conducted utilizing a rota-rod apparatus to further characterize this ataxia. The results indicated the homozygotes performed significantly worse than heterozygotes or wild type animals, and that younger homozygotes outperformed older cohorts. To elucidate potential alterations in cellular calcium signaling, acute cerebellar slices from the vermis were harvested for calcium imaging experiments in vitro. These experiments revealed significant alterations in granule cell somatic calcium signaling in waddles mice. I propose that cerebellar calcium signalling is altered in waddles mice, and that these alterations may be contributing to the observed ataxia through developmental mechanisms. These results will aid in understanding ataxias whose pathological basis involves alterations in neuronal calcium signaling.


identifier: Morrison, Adrian <https://research.library.mun.ca/view/creator_az/Morrison=3AAdrian=3A=3A.html>   (2014) From workplace to home space: archaeology at the James M. Rogers sawmill, Scots Bay, Nova Scotia (BhDc-16).  Masters thesis, Memorial University of Newfoundland.

abstract:
When Nova Scotia’s lumber industry peaked in the mid to late nineteenth century, water
powered sawmills could be found on essentially every river, brook, or stream in the
province. While large-scale sawmills were important to the greater economy, mills varied
in size and function: there were hundreds of small, family-run operations sawing for local
use. Regardless of size, most were influential to their immediate communities, providing
employment and necessary building materials. In an effort to learn more about these
small-scale enterprises, and their wider implications, an archaeological investigation was
carried out the site of the James M. Rogers Sawmill (BhDc-16), in Scots Bay, Kings
County. Built in the late 1850s or early 1860s, the James M. Rogers Sawmill was used
opportunistically to supplement an income made primarily through agricultural activities.
Research at the site focused on three primary objectives: determining the layout and scale
of the mill; establishing the operation’s function within its owners overall economic
strategy; and situating the sawmill within Scots Bay’s wider industrial economy.


identifier: Sekercioglu, Nigar <https://research.library.mun.ca/view/creator_az/Sekercioglu=3ANigar=3A=3A.html>   (2014) Sleep quality, depression, and quality of life in patients with chronic kidney disease: a single centre experience.  Masters thesis, Memorial University of Newfoundland.

abstract:
Background: Sleeping problems and depression are more common in patients with
chronic kidney disease (CKD) than the general population. The primary objective of this
cross-sectional study was to test factors associated with sleep disturbances, depression,
and quality of life among patients with CKD.
Methods: We recruited patients with CKD who lived in the St. John’s area from
September 2012 to December 2012. The Pittsburgh Sleep Quality Index (PSQI), the
Berlin Questionnaire (BQ), the Beck Depression Inventory (BDI), the Beck Depression
Inventory Fast-Screen for Medical Patients (BDI-FS), and the Short Form 36 Quality of
Life Health Survey Questions (SF-36) were administered to all participants. A chart
review was performed for the patients’ demographics, diagnoses, medication lists, and
certain laboratory parameters—including blood glucose, hemoglobin, albumin, calcium,
phosphate, parathyroid hormone, and estimated glomerular filtration rate (e-GFR).
Logistic regression models were employed to estimate odds ratios (OR) with 95%
confidence intervals (CI).
Results: The sample had a total of 303 patients (41% female and 99% Caucasian). One
hundred and seventeen (39%) patients were labeled as poor sleepers with the PSQI, while
157 (51.8%) patients had high risk for sleep apnea in the study cohort. Physical
component scores (PCS) and mental component scores (MCS) of the SF-36 questionnaire
were significantly lower in the dialysis group when compared to the non-dialysis group.
iii
A higher risk for impaired sleep was associated with being a female and on
antidepressants and/or benzodiazepine or non-benzodiazepine hypnotic agents.
Conclusions: Sleep problems and depression are common in kidney patients. Women are
more prone to sleeping problems than their male counter-parts. Furthermore, people who
have low MCS scores are more prone to impaired sleep or vice versa.


identifier: Zhao, Yi <https://research.library.mun.ca/view/creator_az/Zhao=3AYi=3A=3A.html>   (2014) Practicum: The C-S method in computation of the logistic normal integral.  Masters thesis, Memorial University of Newfoundland.

abstract:
In logistic regression models with measurement error involved, the likelihood func-
tion is often taking the form as the logistic normal integral. Among several methods
that have been proposed to compute this kind of integral, the method by E. Crouch
and D. Spiegelman (1990) (C-S), programmed in FORTRAN, is believed to be a good
candidate from the computational perspective. We investigate this method by calling
the FORTRAN code into R, and compare its performance with the classic Gaussian
Quadrature method. The simulation results show that the C-S approach is much
faster than the classic Gaussian Quadrature algorithm without losing any precision
of the estimates, especially when the sample size is large.


identifier: Riahi, Saleh <https://research.library.mun.ca/view/creator_az/Riahi=3ASaleh=3A=3A.html>   (2014) Development of the drude polarizable force field for H₂S and QM/MM study of aqueous Mg²⁺ and Zn²⁺.  Masters thesis, Memorial University of Newfoundland.

abstract:
In this work, the effect of induced polarization in molecular dynamics simulations of liquids
and solutions is explored. We developed a Drude polarizable model for liquid hydrogen sulfide
(H₂S). The calculated thermodynamic properties for this model are in good agreement
with experiment over the temperature range 212–298 K. This model is also accurate for
aqueous solutions of H₂S, including the hydration free energy and diffusion coefficient.
The interfacial properties of water under H₂S(g), including free energy profile and surface
tension, indicate that H₂S is a powerful surfactant. To explore more sophisticated computational
models, the performance of Drude model in the prediction of hydration properties of
Mg²⁺ and Zn²⁺ ions was also studied. Our results show that the Drude model qualitatively
describes the solvation free energy of these two ions, but QM/MM simulations are able to
achieve quantitative accuracy.