identifier: Pope, Leslie M. <https://research.library.mun.ca/view/creator_az/Pope=3ALeslie_M=2E=3A=3A.html>   (2013) An exploratory and descriptive analysis of client satisfaction and outcome realization for central health's assertive community treatment team.  Masters thesis, Memorial University of Newfoundland.

abstract: The main objectives of this study were to provide a description of the service delivery model of an assertive community treatment (ACT) team in central Newfoundland and Labrador and to examine the characteristics of ACT service users, their degree of satisfaction with ACT, and whether their engagement with ACT had resulted in a reduced reliance on acute psychiatric services. A recently completed DACTS report, along with researcher immersion and informal interviews with the ACT team, were used as informational sources to explore the team's adherence to the ACT evidence-based model. Chart audits were completed to collect data on participant characteristics. Days of psychiatric admission and emergency room (ER) visits were collected retrospectively for participants based on their individual pre- and post-ACT engagement time periods. Twenty-nine ACT clients agreed to participate in this study. The majority of participants (82.8%) were male and diagnosed with schizophrenia or a schizoaffective disorder (65.5%). There was a high rate of concurrent substance abuse (75.9%). The main outcome measures were the number of readmission days and ER visits before and after ACT engagement. The average number of readmission days reduced from 14 to zero (p <.05) following engagement with ACT. The average number of visits to ERs also reduced from three to one (p < .05). Participants reported overall high satisfaction with ACT services. Responses were highly concentrated with references to emotional and instrumental support. This study articulates how model fidelity translates into practice. Its findings contribute to the current literature, which associates higher model fidelity with improved client outcomes related to acute psychiatric services. The need for provincial cross-site comparisons and repeated program assessments of ACT are substantiated.


identifier: Porter, Michelle. <https://research.library.mun.ca/view/creator_az/Porter=3AMichelle=2E=3A=3A.html>   (2011) 'Tales in a tent': John Sampson's representation of Romanies.  Masters thesis, Memorial University of Newfoundland.

type: Thesis NonPeerReviewed

abstract: This analysis of an article published in 1892 examines the production of academic knowledge about Romanies in late nineteenth century Britain. This thesis investigates three aspects which arise from John Sampson’s description of fieldwork: 1. the emergence and hegemonic dominance of the Gypsy Lore Society which published the article in its journal The Journal of the Gypsy Lore Society; 2. John Sampson’s performance of an idealized Romani Rai and its impact on his research methods; 3. what the text itself reveals about the nature of interactions between Romani Rais and Romanies, with a particular focus upon how items of folklore and language are coded to convey a variety of meanings to different audiences. From this discussion, this thesis concludes that the performance of the Romani Rai was an essential motivator for Sampson’s academic activities and, further, that this performance diminished the quality and content of the research collected.


identifier: Posluns, Emma G. <https://research.library.mun.ca/view/creator_az/Posluns=3AEmma_G=2E=3A=3A.html>   (2012) The analysis of temporal and environmental influence on commercial catch rate of yellowtail flounder (Limanda ferruginea).  Masters thesis, Memorial University of Newfoundland.

abstract: For the commercial fishing industry, efficiency and sustainability are key aspects of business. Knowing when and where to harvest, along with the environmental traits associated with good fishing grounds, minimizes costly fuel and time spent searching for fish. Quantifying this knowledge not only creates a baseline of habitat information, but also preserves fishing patterns for use by future harvesters or in developing fisheries. This study investigates temporal and spatial patterns in the catch rates of yellowtail flounder (Limanda ferruginea) recorded by factory freezer trawlers operating on the Grand Bank of Newfoundland and Labrador, Canada. The temporal analysis revealed that commercial catch rates are higher at night as well as during winter and summer. The findings suggest that ambient light levels and environmental factors are important for successful yellowtail flounder- trawl interactions. Spatial analysis is used to show the interactions between environmental variables and yellowtail flounder catch rates. It was found that wind speed, water depth, sediment type, and bottom water temperature all relate to catch rate, but in varying degrees. The results of this project provide evidential support for improved data collection, storage, and analysis by our industry partner.


identifier: Pottie, Ian R. <https://research.library.mun.ca/view/creator_az/Pottie=3AIan_R=2E=3A=3A.html>   (2002) Exploration of the inverse-electron-demand Diels-Alder (IEDDA) reaction. Rapid access to benzocoumarins via IEDDA-driven domino reactions of coumarin-fused electron-deficient dienes with electron-rich dienophiles.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Chapter 1 overviews the general concepts of the Diels-Alder reaction, and particular attention is given to the inverse-electron-demand Diels-Alder reaction (IEDDA). Examples of all-carbon diene systems that contain electron-withdrawing groups at their 1- and 3-positions and their IEDDA reactivity are described. -- Chapter 2 presents the synthesis of a coumarin-fused diene that was produced in a single step. An oxidative cleavage of this diene produces 3-formylcoumarin, which can be used in the Homer-Wadsworth-Emmons reaction or the Knoevenagel condensation to afford other coumarin-fused dienes. -- Chapter 3 presents the IEDDA reactivity of methyl (E)-3-(2-oxo-2H-chromen-3-yl)acrylate with electron-rich dienophiles. Enamines undergo an IEDDA-driven domino reaction to produce benzocoumarins. The reaction procedure can be simplified by generating the dienophile in situ. -- Chapter 4 details the methodology development of the IEDDA-driven domino reactions. The methodology was used to synthesize a subunit of a new heterokekulene and efficiently generate benzocoumarins from the appropriate phenols. Preliminary results for producing azabenzcoumarins are also discussed. -- Chapter 5 contains details of a concise, high yielding total synthesis of a naturally occurring benzocoumarin by applying the methodology developed in Chapter 4. An IEDDA-driven domino reaction constitutes the key step of the synthesis.


identifier: Pottle, John Edward <https://research.library.mun.ca/view/creator_az/Pottle=3AJohn_Edward=3A=3A.html>   (1982) A study investigating a hierarchical model relating to the concept of conservation of mechanical energy.  Masters thesis, Memorial University of Newfoundland.

abstract: The major purpose of this study was to identify a learning hierarchy leading to the learning of the concept of conservation of mechanical energy, to the level normally found in high school physics courses. A secondary purpose was to determine students' misconceptions relating to the specific skills hypothesized to lead to the attainment of this concept. -- The main sample consisted of 156 grade-ten physics students in two senior high schools. A test instrument, which was designed to test for skills of the hypothesized hierarchy, was administered to these subjects soon after instruction of the topic was completed by the teacher involved. A similar test was administered one week after the initial test. An instructional booklet, which was intended to remediate for skills which subjects failed to learn during regular classroom instruction, was administered after the initial test. -- Two psychometric methods, namely the ordering-theoretic method and the Dayton and Macready method were used to analyze the data. The results of this analysis indicated that the hypothesized hierarchy was not supported in its entirety. However, an alternative hierarchy containing eight of the ten skills of the hypothesized hierarchy was considered valid. Most connections between component skills within this alternative hierarchy were also validated by both methods. However, further testing of the relationship between some skills was considered desirable. Consequently, these relationships were further tested with a supplementary sample of 123 grade-ten students. Analysis of these data resulted in agreement between the ordering-theoretic and Dayton and Macready methods, and a psychometrically validated hierarchy was presented. -- A further test was also applied to the data in order to determine if transfer of learning existed between subordinate and superordinate skills. Connections between three of the upper skills in the hierarchy were validated in terms of the learning transfer relationship. Learning transfer relationships for the other skills could not be determined because of a limitation in the test of transfer applied. -- The report concludes with a discussion of subjects' misconceptions of the skills involved, as revealed by analysis of the test items.


identifier: Powell, James Conrad <https://research.library.mun.ca/view/creator_az/Powell=3AJames_Conrad=3A=3A.html>   (1980) Distribution and heterotrophic potential of microorganisms in a cold ocean environment.  Masters thesis, Memorial University of Newfoundland.

abstract: During the period from April 3, 1979 to May 1, 1980, fourteen sets of seawater samples were collected at a single station in Conception Bay, Nfld. Each set, except for a set collected on April 3, 1979, consisted of samples from four depths (0.5, 10, 20 and 40 m). Total viable heterotrophic bacteria were estimated by the standard plate count (SPC) method and by the most probable number (MPN) method. Total bacterial numbers were determined by the acridine orange direct count (AODC) method. Oleoclastic bacteria were enumerated by an MPN method using a buffered basal salts medium to which Venezuelan crude oil had been added. Heterotrophic bacterial activity was determined by the heterotrophic potential method. -- Total numbers of bacteria fluctuated over the sampling period but generally were lower in winter. Numbers ranged from 2.5 x 10⁷ to 4.6 x 10⁸ per litre of seawater. Viable bacteria by the MPN method ranged from 3.3 x 10³ to 1.6 x 10⁶ per liter and, generally, were highest in the fall. MPN estimates represented 0.003 to 1.750% of the total bacteria determined by the AODC method. The SPC method yielded 6.0 x 10³ to 3.3 x 10⁶ viable bacteria per liter during the course of sampling, and the highest numbers by this technique were observed in June, 1979, for all depths tested. Throughout the sampling period, 0.003 to 3.370% of the total bacteria (AODC method} were detected by the SPC method. This method gave higher estimates of viable bacteria in June and July, while the MPN method gave higher results in October, November, and December. At other times of the year, numbers were approximately the same by the two methods. Oleoclasts ranged in number from 7.7 x 10² to 1.6 x 10⁶ per liter and were higher in the May to September period than at other times of the year. No pattern of distribution with depth was observed for either total, viable, or oleoclastic bacteria. -- Heterotrophic activities were determined at in situ temperatures and exhibited a seasonal trend. Vmax increased from spring to summer, decreased during the fall, and remained low during the winter. However, highest Vmax values at all sampling depths were recorded before the highest water temperature for the year was reached at each depth. Turnover time decreased with increasing temperature and the opposite was also observed. Vmax ranged from 1.3 to 121.0 ng glutamate l⁻¹h⁻¹ over the sampling period, and turnover time varied from 66 to 13,074 h. Neither Vmax nor turnover showed any pattern with depth. -- Vmax specific activity index (Vmax/ cell) was generally higher in summer than at other times of the year. The highest values at three depths also preceded the maximum water temperature. Values ranged from 0.007 to 1.235 fg glutamate h⁻¹cell⁻¹ over the sampling period. -- A thermocline was present on four of the fourteen sampling days. The thermocline appeared to have little effect on bacterial numbers but heterotrophic activity was lower below the thermocline than above. -- This project has shown that the majority of the bacterial population exists in a dormant state. -- This is the first study in which both bacterial numbers and heterotrophic potentials have been determined throughout four consecutive seasons for marine waters of the Canadian Atlantic seaboard.


identifier: Powell, Tammy Lynette <https://research.library.mun.ca/view/creator_az/Powell=3ATammy_Lynette=3A=3A.html>   (1997) A study of refill non-compliance and predictors of refill non-compliance to tricyclic and SSRI antidepressants in a population setting.  Masters thesis, Memorial University of Newfoundland.

abstract: The current study utilized the Atlantic Blue Cross Prescription Drug Database to examine patient: refill compliance to antidepressants from the tricyclic and selective-serotonin re-uptake inhibitors (SSRII classes. The primary goals of the study were to describe and compare compliance between the tricyclic and SSRI users, to ascertain whether patient age and gender, treatment cost, and regimen complexity were predictors of non-compliance, and to evaluate the problems involved with utilizing the Atlantic Blue Cross Database for compliance research. -- Non-compliance was measured by using three outcome measures. First the percentage of non-compliant days (defined as the percentage of days during treatment without medication) was found. Second, the early medication 'stoppers' were compared to the medication 'continuers'. Finally, the time course of non-compliance was studied by finding the time till the first non-compliant gap for users. -- Results showed that the mean percentage of noncompliant days was 8.4% (95% CI; 7.9-8.9) for the tricyclic and SSRI users who filled more than one prescription. In addition, between 8.1-11.4% of users stopped the antidepressant medication early. Survival analysis suggested that the greatest drop in the cumulative probability of having a non-compliant gap occurred early in treatment for both classes. No differences were found in the comparisons of the tricyclics and the SSRI's in terms of non-compliance. The predictor variable age was weakly associated with noncompliance; as age increased, non-compliance decreased. In addition, regimen complexity as measured by the number of concurrent medications and the number at doses per day was also weakly associated with non-compliance. More specifically, as the number of concurrent medications increased, compliance increased and as the number of doses per day increased, compliance decreased. -- A number of problems were identified with the Blue Cross Database. In a number of cases, data was missing. Data contamination problems were identified that were probably the result of data entry errors. Cleaning protocols were developed to deal with some of these problems. A number of other problems were also identified which were inherent to the database. For example, there was a lack of documentation concerning dates of entry and exit to the Blue Cross Program.


identifier: Powell, Tracey <https://research.library.mun.ca/view/creator_az/Powell=3ATracey=3A=3A.html>   (2004) The experiences of instructional designers of Web-based learning at the post-secondary level.  Masters thesis, Memorial University of Newfoundland.

abstract:
The purpose of this study was to gain insight into the experiences of instructional
designers at the post-secondary level who are designing for Web-based learning (WBL). Five
separate case studies were considered from the perspectives of work environment, roles and
responsibilities, successes and challenges and the designers' reflections on their experiences.
The composite of the designer of WBL that emerged from the experiences is one who
operates as part of a team and collaborates with others during the course development
process. The designer of WBL is also an agent of change, fueling the adoption of Web-based
technologies, policies and processes by his/her development unit. He or she is also a
specialist and expert in the areas of Web-based technologies, instructional design processes,
learning theories, adult learning principles, and online teaching and learning practices. The
designer of WBL is also a researcher who seeks new knowledge in these areas and may also
be a trainer, instructor, and/or consultant in sharing this knowledge with others. The designer
of WBL is also a course developer and may even be a curriculum and program developer
and/or course and program evaluator. Implications highlight the importance of access to
opportunities to learn and for support.


identifier: Power, Desmond <https://research.library.mun.ca/view/creator_az/Power=3ADesmond=3A=3A.html>   (1993) Spherical scattering of superpositions of localized waves.  Masters thesis, Memorial University of Newfoundland.

abstract: Localized wave (LW) solutions to the homogeneous wave equation represent broadband focused interference patterns whose focusing properties have been demonstrated to be superior to those of equivalent monochromatic (i.e. CW) solutions, in the context of multi-time-derivative transmit-receive systems. The focused, broadband nature of these pulses make them ideal candidates for use in remote sensing. The broadband nature of these LWs allows for enhanced target parameter extraction while the superior focusing properties ensure that a relatively large amount of energy reaches the target. -- The spherically backscattered spectra of acoustic realizations of LWs are investigated for purposes of remote sensing. The LWs are acoustically launched with a synthetic hydrophone array. The backscattered spectra of several different sized steel and aluminum spheres have been obtained. Analysis indicates that the sphere radius can be readily extracted from these spectra. The backscattered spectra of steel sphere pairs have also been obtained. Preliminary analysis indicates that the single-sphere and double-sphere backscattered spectra have similar characteristics. However, it is questionable whether or not analysis of multi-sphere backscattered spectra will produce useful experimental data for a practical L W remote sensing system.


identifier: Power, Jonathan <https://research.library.mun.ca/view/creator_az/Power=3AJonathan=3A=3A.html>   (2004) The effects of water temperature, gender and exercise on breath holding following sudden face immersion.  Masters thesis, Memorial University of Newfoundland.

abstract: A potential risk that workers face when commuting to offshore oil platforms is the helicopter ditching or crashing in cold ocean water and inverting. This happens if the helicopter's flotation bags fail to deploy. In this scenario a person's chance of survival appears to depend ·on their ability to make a successful breath hold swim from the sunken fuselage to the surface. Since each passenger should be wearing full body immersion suit, only the face is exposed to the cold water during a breath hold swim. As such, the two studies in this thesis examined if water temperatures (between 0°C and 20°C), gender and exercise can affect a typical sized person's maximum breath hold time (BHTmax) following a sudden facial immersion. In the studies the typical size males were significantly taller (p≤0.05) and heavier (p≤0.001) than the typical size females. The first study examined the effects of water temperature and gender on BHTmax for participants at rest with a sudden facial immersion. The second study examined the same effects on BHTmax during moderate intensity upper body exercise. For resting participants, lower water temperatures resulted in significantly shorter BHTmax and females had shorter BHTmax than males. In study 2 during moderate intensity upper body exercise, BHTmax was not affected by water temperature but males continued to have significantly longer BHTmax than females. During the exercise condition the males had a BHTmax of ~25s across all breath hold conditions, and the females had a BHTmax of ~15s across all immersion conditions. In conclusion, the effect of water temperature on breath holding is evident for resting but not in exercise conditions. Although in both studies males had significantly greater BHTmax than females, it remains to be established if this is an effect of gender or physical size.


identifier: Power, Kevin Edward <https://research.library.mun.ca/view/creator_az/Power=3AKevin_Edward=3A=3A.html>   (2003) An acute bout of static stretching: effects on force and jumping performance.  Masters thesis, Memorial University of Newfoundland.

abstract: Static stretching (SS) is used pervasively throughout the exercise science and sporting communities as a fundamental element of the pre-exercise warm-up procedure. While SS has been proven effective to increase range of motion (ROM), its proposed benefits are questionable and relatively unsubstantiated. Moreover, in recent years researchers have demonstrated that pre-exercise SS may in fact be detrimental to subsequent performance due to impaired force and power output. Yet the practical application of these relatively recent findings is limited due to the prolonged SS protocols utilized. In addition, timelines associated with enhanced ROM and performance decrements have not been established. Thus, the objectives of this study were to determine if a typical SS routine decreased force, activation, and power while improving ROM. Secondly, the study attempted to compare the duration of the performance decrement to the duration of the augmented ROM.


identifier: Power, Lorena <https://research.library.mun.ca/view/creator_az/Power=3ALorena=3A=3A.html>   (2003) Benchmarking the provision of coronary artery bypass grafting surgery in Newfoundland and Labrador.  Masters thesis, Memorial University of Newfoundland.

abstract: Governmental concern for the effective utilization of limited health care resources has necessitated the development of standardized, objective tools to measure and document changes within the health care system. The use of coronary artery bypass grafting surgery (CABGS), like all other health procedures, has high public cost and must be perfom1ed appropriately, when necessary, efficiently, and with high quality of care. Establishing the required frequency of a procedure, CABGS, in a population (benchmarking) is vital to ensure adequate allocation of resources. In 1995 researchers found that CABG surgery in Newfoundland and Labrador (NL) was being appropriately applied but that access to the service was far less than ideal. The authors benchmarked the need for CABGS. The current investigation was designed to reassess the need for CABGS in this province and to provide revised benchmarks. The analysis compared data between study periods and addressed the following areas: the current need for CABGS in NL, the appropriateness of utilization, the necessity of utilization, the waiting times, the quality of care delivered with this service, and the future need of CABGS in NL. -- All patients identified with critical coronary artery disease (CAD) through coronary angiography (CA) between August 18, 1998 and August 13, 1999 were included in the study. In addition, all patients who received CABGS during the same study period were followed for quality of care. Findings were then compared with a previous study (1994/95). -- In 1998/99, 1625 patients had critical coronary artery disease and were characterized by late stage angina symptoms and multi-vessel disease. The average age was 62 years and 75% were male. Four hundred thirty-four patients (434) underwent CABGS during the study period while 517 patients were referred for surgery. Thus, the waitlist increased by ~ 30% throughout the year. Only 40% of patients received surgery within the recommended waiting time. Over 94% of the referrals were deemed necessary. There was an excellent correlation between the cardiovascular team and the objective RA D criterion in decision-making (Kappa=0.86). We identified an additional 91 patients for whom surgery was recommended, according to RAND criteria, but who did not receive a referral. Eighty-six percent (86%; n=78) of this group were actually treated with percutaneous transluminal coronary angioplasty (PTCA). -- Since 1994/95, the number of diagnostic catheterizations has increased by 37%. In addition, there was a 50% increase in critical coronary artery disease diagnosis (1 082-1625). In both studies, the proportion of patients with critical CAD diagnosed by angiography was similar. Although age and gender remained stable throughout the study periods, the latter (1999) cohort was characterized by a higher proportion of Class III angina, a lower proportion of positive exercise stress testing results, and less patients with a very low ejection fraction. Yet, the proportion of patients with critical CAD referred for CABGS remained stable (36%). Whilst there has been a dramatic increase in referrals for angioplasty (137%), there has been a relative decline in medical therapy as a means of treatment for these patients (-18%). Compared to 1995, increased utilization of CABGS was related to the diagnosis of patients at an earlier symptomatic phase of coronary artery disease (CAD) and to increased access to coronary catheterization. In addition, increased use of PTCA and changes in health care altered demand. -- We concluded that physician clinical decision-making was an appropriate way by which to measure need for CABGS. The authors have noted an increase in utilization of cardiac catheterization, which resulted in an increase in referrals for CABGS (8% per annum). Thus, allowing for growth in access to coronary angiography, and change in case mix as well as the need to reduce the waiting list, we estimated annual need to be 1.72 surgeries/ 1,000 population > 20 yrs of age in 200112002. However, predictions proved unreliable and need was underestimated. -- In times of continual fluctuation in rate and changing assumptions between 1994 and 1999, it is difficult to provide a confident estimation of future need. Research should instead aim to identify stability. Persistent monitoring should recognize this period of stability and researchers will be better able to estimate future trends at that time.


identifier: Power, Luke <https://research.library.mun.ca/view/creator_az/Power=3ALuke=3A=3A.html>   (2005) Non-orthographic consonant cluster manipulation by good and poor spellers.  Masters thesis, Memorial University of Newfoundland.

abstract: This research examined the correlations between spelling, reading ability and phoneme awareness. A group of university undergraduate students were tested on measures of reading (Woodcock Reading Mastery Test, Woodcock, 1998), spelling (Test of Written Spelling, Larsen et al., 1999), phonological processing (Comprehensive Test of Phonological Processing, Wagner et al., 1999), and finally on an experimental phoneme awareness task (Squires, 2004). The phoneme awareness task used examines phoneme awareness without the effects of production and orthography by presenting participants with auditory stimulus. In the task, participants were asked to compare two words and determine if the first phoneme or sound was deleted from the second word compared to the first. When good and poor spellers were compared in terms of reaction time and score for the phoneme awareness task, there was no significant difference found. However, there was a significant effect of deletion type in the phoneme awareness task found. Specifically, confusion of manipulation of an analytic form of phonological unit (phoneme in a complex consonant cluster) and a more holistic form of phonological unit (complex consonant cluster) was observed in all participants. Lastly, manipulation of "real" consonant clusters and "fake" consonant clusters (Is/+ obstruent) were not found to be significantly different despite structural differences. These results allow a number of conclusions to be made, including that phoneme awareness may not be the crucial element or stage in reading and spelling, that phoneme awareness itself should be viewed as a continuum of abilities with two levels (holistic and analytic), and finally that there is evidence that onset consonant clusters and initial consonant representations are somehow confused by the majority of readers and spellers tested regardless of ability.


identifier: Power, Randal J. <https://research.library.mun.ca/view/creator_az/Power=3ARandal_J=2E=3A=3A.html>   (2007) In-situ optical microscopy, potentiostatic and potentiodynamic studies of 316L stainless steel and other metals in sulfuric acid solutions with nickel, chloride and sulfates.  Masters thesis, Memorial University of Newfoundland.

abstract: The corrosion patterns of 316L stainless steel is examined using a custom developed corrosion test cell which allows for in-situ analysis of a sample surface using a conventional microscope and off the shelf digital photography equipment. -- Laboratory prepared solutions of 3.5% NaCl, 3.39M sulfuric acid with 0.25M nickel sulfate and a variety of 1M sulfuric acid, nickel sulfate and nickel chloride based solutions were tested under aerated and deaerated conditions. The results illustrate the wide variety of corrosion behaviors possible for 316L stainless steel under potentiostatic and potentiodynamic test conditions. Analysis of these samples provides both a detailed visual account of the corrosion process in addition to standard electrochemical analysis regarding pitting potentials, corrosion potential, corrosion rate, etc. -- Polarization data and analysis regarding the corrosion patterns observed is presented including in-situ images of grain boundary etching, surface layer changes and pitting. Detailed images and analysis of chromium carbide and sulfide inclusion behaviors in sulfuric acid were performed showing the tendency of sulfide inclusions to dissolve and act as nucleation sites for pits. -- Experimental hydrometallurgical process fluids were also tested, confirming the ability of in-situ optical microscopy to successfully image and providing valuable insights into the corrosion processes taking place. -- Titanium, aluminum, magnesium and electronic materials were tested in predominantly 3.5% NaCl solution to confirm the feasibility of imaging different metals undergoing corrosion.


identifier: Power Doyle, Catherine <https://research.library.mun.ca/view/creator_az/Power_Doyle=3ACatherine=3A=3A.html>   (1997) Parenting through crisis: group counselling with single mothers.  Masters thesis, Memorial University of Newfoundland.

abstract: This project consists of two parts: a review of the relevant literature on group counselling as it applies to recently separated mothers who may be experiencing crisis and a handbook that can be used by counsellors to conduct a short term intervention for single mothers in crisis. The handbook itself is an executive summary of information and instructions needed to run the group. This format is in keeping with most guides for parenting groups since they are meant to assist with skill enhancement rather than provide in-depth psychotherapy. However, this group differs from regular parenting guides since it acknowledges the pressing need for therapeutic support in the mothers' lives during this time of turmoil and therefore uses a counselling format that recognizes the psychological implications of an emotional crisis. The handbook also contains a form to be used in the evaluation of the program by recipients of the intervention. A list of guidelines for the establishment of an ongoing support group after the initial crisis has subsided has also been included.


identifier: Prange, Laurie A. <https://research.library.mun.ca/view/creator_az/Prange=3ALaurie_A=2E=3A=3A.html>   (2013) A new expectation for post-secondary librarians: faculty status, collective agreements, and the online evidence of teaching.  Masters thesis, Memorial University of Newfoundland.

abstract: The majority of librarians at Canadian post-secondary institutions have recently attained faculty status. However, the collective agreements of the faculty associations do not always explicitly state that librarian members participate in all three traditional faculty activities: teaching, scholarship, and service. This study focuses on the membership of the Canadian Association of University Teachers (CAUT), using qualifying member collective agreements and library websites. A qualitative approach is used to build upon the research first reported by Leckie and Brett (1995). Through description, analysis, and interpretation of data, I report that there is a disparity between what the collective agreements state regarding the teaching responsibilities of librarians and what the library websites advertise on behalf of teaching librarians. Three themes of library teaching emerge and two trends for collective agreements regarding postsecondary librarians teaching are considered.


identifier: Prasad, Chintalapati V. V. <https://research.library.mun.ca/view/creator_az/Prasad=3AChintalapati_V=2E_V=2E=3A=3A.html>   (1983) High resolution study of the Ångström band system of the ¹³C¹⁸O molecule.  Masters thesis, Memorial University of Newfoundland.

abstract: A hollow cathode discharge tube of special design whose cathode portion can be conveniently cooled with liquid nitrogen during the operation of the discharge was constructed. Initial experiments have shown that the cathode glow is an excellent source to obtain the electronic band spectra of several ionic diatomic molecules and that the anode glow is a convenient source to obtain certain selective diatomic band systems of numerous neutral diatomic molecules. -- The Β¹Σ⁺ - Α¹Π Ångström band system of the ¹³C¹⁸O molecule consisting of eight bands In the region 4100 - 6500 Å was photographed under the medium dispersion of a 2 m Bausch and Lomb dual grating spectrograph in the first order of a 600 grooves/mm grating as well as under the high resolutions of this instrument and a 3.4 m Jarrell - Ash Ebert grating spectrograph, in each case, in the second and third orders of a 1200 grooves/mm grating. -- Detailed rotational analysis has been carried out for the first time for the 1-0, 1- 1, 0-1, 0-2, 0-3, 0-4, and 0-5 bands except for the complex 0-0 band. Rotational constants for both Α¹Π and Β¹Σ⁺ states as well as the origins of these bands have been derived from the analysis. Vibrational constants for the two states are also obtained from the band origins. -- Perturbations observed in the vibrational levels v = 0, 3, and 5 of the Α¹Π state have been analyzed in detail. It is found that the v = 0 level of the Α state is perturbed by the v = 1 level of the e³Σ⁻ state and its v = 3 and 5 levels are perturbed by the v = 13 and 16 levels of the a’³Σ⁺, respectively.


identifier: Prathapasinghe, Gamika A. <https://research.library.mun.ca/view/creator_az/Prathapasinghe=3AGamika_A=2E=3A=3A.html>   (2004) Intestinal metabolism of sulfur-containing amino acids in the rat.  Masters thesis, Memorial University of Newfoundland.

abstract:
The portal-drained viscera play a fundamental role m the supply of dietary
nutrients to the rest of the body. On a tissue mass basis these organs consume a
disproportionately higher quantity of dietary available nutrients. Of the portal-drained
viscera, the intestine is unique, being able to utilize nutrients from both luminal and
arterial sources. With regard to sulfur-containing amino acids, the small intestine
consumes about 30% of dietary available methionine though the gastrointestinal system
represents only about 7% of the whole body mass. This organ is known to contain all the
necessary enzymes of transmethylation, remethylation and transsulfuration. -- Although the A-V balance of sulfur-containing amino acids across portal-drained
viscera has been demonstrated by previous studies, the fluxes of sulfur-containing amino
acids across the portal-drained viscera in the rat are not known. The fate of exogenous
methionine within the enterocytes has not been elucidated. Therefore, in this thesis, the
fluxes of major thiols across the portal-drained viscera and the metabolic fate of [1-¹⁴C]
methionine in isolated rat enterocytes were studied. Total cysteine was found to be
exported to the portal blood in rats fed a 60% casein diet, a 20% casein supplemented
with 0.6% cystine diet and a 20% casein supplemented with 0.5% methionine diet. The
exported cysteine was entirely in the non-protein bound form in the portal plasma.
Homocysteine was taken up from the arterial blood in rats fed a 2% methionine-containing
diet. Glutathione was taken up by portal venous-drained viscera in all diet
groups except the 60% casein fed rats. -- Exogenous labelled methionine was metabolized by enterocytes at approximately
the same rate as in hepatocytes. However, there was no appreciable flux through the
transmethylation pathway. Homocysteine was metabolized through the transsulfuration
pathway into cysteine. These studies reveal an active sulphur-containing amino acid
metabolism in the intestine.


identifier: Pratt, Jerry Dale <https://research.library.mun.ca/view/creator_az/Pratt=3AJerry_Dale=3A=3A.html>   (1968) Spawning distribution of Atlantic salmon (Salmo Salar L.) in controlled flow channels.  Masters thesis, Memorial University of Newfoundland.

abstract: The spawning distribution of Atlantic salmon in specially designed controlled flow channels was studied in relation to spawning density, water temperature, water velocity, water depth, test egg plant mounds, rock weirs, and floating shelters in an attempt to devise management procedures which would reduce egg mortality on the spawning beds arising from egg nest overlap and egg predation. -- Behavior observations included daily counts of spawners occupying beds in various sections, daily positioning of tagged fish in some sections and continuous surveillance of pairs spawning in the channels or in a specially built observation chamber. Spawning area placed into egg nests was plotted daily and the patterns of redd locations were examine by comparison to theoretical probability distributions. Test egg plant mounds, weirs and shelters were installed in the channel and current patterns noted about the former two. Daily water temperature fluctuations and daily fluctuations in fish frequenting spawning beds were correlated. -- Adults spawned successfully free of serious predation, disease or egg retention. Territorialism and mating were observed in established pairs. The territory often changed in locale and rate especially amongst the males. Females did not always place their spawnings in one redd and one redd was often composed of eggs from several different females. Resident salmon parr and trout were discovered as potential salmon egg predators. Analysis indicated randomness in the redd patterns but contagion was isolated on one channel section containing a rock weir. As the spawning density was raised in channel sections, the redd area diminished but redd superimposition still continued to increase. At the highest spawning density imposed of 1 female per 6.4 square yards 25 per cent of the bed area was in redds with 13 per cent of this superimposed. The correlation of daily water temperature fluctuations with spawning activity was significant in one year but insignificant the following year. Salmon were flexible in their water velocity and water depth preferences at redd sites and selections were largely a reflection of the water profiles available. The test egg plant mounds affected the redd distribution; current patterns about the mounds indicated an area of maximum subterranean current on the forward slope of the mounds where adults places redds. Spawners congregated notably under shelter in holding pools but not under shelter over spawning bed.


identifier: Price, Hilary Irene <https://research.library.mun.ca/view/creator_az/Price=3AHilary_Irene=3A=3A.html>   (2013) Weight loss and body shape expectations of laparoscopic sleeve gastrectomy candidates in Newfoundland and Labrador.  Masters thesis, Memorial University of Newfoundland.

abstract: Background: Laparoscopic sleeve gastrectomy (LSG) is a restrictive type bariatric surgery that promotes significant, sustainable weight loss in obese individuals (body mass index (BMI) ≥ 40 kg/m² or BMI 35.0-39.9 kg/m² with major comorbidity) resulting in 45-60% excess weight loss (%EWL). Unrealistic expectations have been consistently reported in the literature of individuals seeking both non-surgical and surgical weight loss interventions. It has been argued that they may negatively impact treatment adherence and weight loss outcomes. -- Purpose: To examine the postoperative weight loss and body shape expectations of LSG candidates in Newfoundland and Labrador (NL). -- Methods: The 'Goals and Relative Weights Questionnaire' and 'Stunkard Figure Rating Scale' were administered to 84 consecutive LSG candidates. They reported postoperative weight loss and body shape expectations in four categories: (1) dream (whatever you wanted); (2) happy (would be happy to achieve); (3) acceptable (could accept even if not happy with); and (4) disappointed (would not view as successful in any way) before the start of a bariatric surgery education session. Body image dissatisfaction (BID) was scored. -- Results: Of the 84 candidates, 69 were women and 15 were men (age 43.7 ± 8.7 years; BMI 49.0 ± 7.0 kg/m²). Expectations for their dream (71.1 ± 11.7 kg), happy (80.0 ± 14.2 kg), acceptable (86.2 ± 17.0 kg) and disappointed (105.6 ± 21.0 kg) weights equated to higher %EWLs (88.7 ± 11 .3 %EWL; 76.4 ± 12.8% EWL; 68.2 ± 16.1 %EWL; and 40.6 ± 21.0 %EWL) than are clinically expected from LSG. %EWLs were significantly different (p<0.05-p<0.003) between all weight loss categories, except goal and dream weights. Men and women were dissatisfied with their current body image (BID score= 4.1± 1.3) and had unrealistic postoperative body shape expectations. -- Conclusions: There is a disconnect between the weight loss expectations of bariatric surgery candidates in NL and what can be clinically expected from LSG surgery. Body shape expectations do not correspond with evidence-based weight loss outcomes from LSG surgery.


identifier: Pryor, Miranda Leigh <https://research.library.mun.ca/view/creator_az/Pryor=3AMiranda_Leigh=3A=3A.html>   (2004) Temporal and spatial distribution of larval and post-larval blue mussels (Mytilus edulis/Mytilus trossulus) and starfish (Asterias vulgaris) within four Newfoundland mussel culture sites.  Masters thesis, Memorial University of Newfoundland.

abstract: As the blue mussel farming industry in Newfoundland continues to grow, farmers anticipate problems regarding spat collection and the presence of predatory starfish on collectors, based on past experience. The objectives of this study were to examine the temporal and spatial patterns of planktonic larval and post-set stages of both mussels and starfish to determine if a consistency in timing of spawning, settlement and abundance exists between these two organisms. -- During 1998, four sites were chosen throughout the province, with weekly larval and spat/juvenile samples taken from May to November. Mussel larvae were abundant at three sites, located on the North coast, from mid-June through late August, with starfish larvae appearing from late June through late August. While some trickle spawning events were recorded, most larger pulses of mussel larvae were generally followed by a larger pulse in spat settlement, ~4-6 weeks later. Size data for these sites also indicated the presence of a major influx of larvae early in summer with some smaller events occurring in late summer to early autumn. Mussel spat settlement and starfish juvenile settlement subsequently occurred at varying times for all three sites, with peak starfish settlement occurring about 2-3 weeks after peak mussel settlement. -- For the fourth site, located on the southern shore, mussel spawning was sporadic resulting in low settlement on collectors. As well, no starfish were observed on this site. While larval numbers were highest among sites along the North coast of Newfoundland, geographic location alone does not seem to be the major factor determining larval procurement and spat settlement. The one sample site along the South coast had very low larval numbers throughout 1998 but, without experiencing any loss of spat over the winter months, anticipated spat available for socking in the spring would be comparable to the other three sites. -- During 1999, larval size and abundance was examined over a 12-hour tidal cycle, on two of the sites examined in 1998 (one on the North Coast, one on the South Coast) and the results indicated that larval numbers changed often over the tidal cycle, at both sites, with observable changes in the abundance of such fouling organisms as starfish and saxicave clam larvae also recorded. This study demonstrated the importance of a standardized and accurate method for monitoring larval abundances on shellfish culture sites with the timing, occurrence and relationship of abundance between larvae and spat/juveniles of mussels and starfish being site specific throughout Newfoundland.


identifier: Puddister, Deidre A. <https://research.library.mun.ca/view/creator_az/Puddister=3ADeidre_A=2E=3A=3A.html>   (2004) Monitoring and assessment of conditions at a diesel oil spill site in Bonne Bay, Newfoundland and tests to determine the relative toxicity of diesel fuel to three marine invertebrate species.  Masters thesis, Memorial University of Newfoundland.

abstract: In 1999, 38000 litres of diesel oil was spilled in Gros Morne National Park, much of which leached onto on a small area of coastline. The goal of this project was to determine the effects of the diesel oil, and resulting clean-up procedures, on the coastal environment. Chapter 1 focuses on assessing conditions at the diesel oil spill site by examining hydrocarbon levels in sediments and organisms at the site, and by conducting a survey of the algal taxa present. Significant quantities of diesel were present for at least two years after the spill, both in sediments and biota. The oil spill site was also affected by uncharacteristically low-salinity conditions, as evidenced by the predominance of fresh-water tolerant algae. Chapter 2 focuses on determining the range of effects of the diesel oil using caged invertebrates, transplanted at a gradient from the point source of diesel and analyzed using binary logistic regression. Both distance from the source and length of time at the site (i.e. length of exposure to diesel oil and low-salinity conditions) affected the survival time of transplanted organisms; organisms transplanted closer to the source died faster than those farther away, though all organisms eventually perished. Chapter 3 examines the effects, combined and individual, of diesel and reduced salinity on the survival rates of three invertebrates commonly found along the Newfoundland coastline. Survival of these invertebrates, Mysis stenolepis, Gammarus oceanicus, and Littorina obtusata, was examined using one-way analysis of variance with a Tukey's test, two-factor analysis of variance, and regression analysis. Not all marine intertidal invertebrates react equally when exposed to diesel oil and reduced salinity, alone or combined, however, when considering that these organisms represent those potentially affected by a coastal oil spill, it can be concluded that even a short-term exposure could be devastating.


identifier: Pullela, Ramalakshmi <https://research.library.mun.ca/view/creator_az/Pullela=3ARamalakshmi=3A=3A.html>   (2005) Computation of stress intensity factor for through cracks in plates and bending of shells using P-version finite element method.  Masters thesis, Memorial University of Newfoundland.

abstract: The present study concerns the analysis of bending of plates and shells subjected to various boundary conditions and load. Bending stress intensity factors for plates containing through thickness crack under edge bending load are evaluated. To accomplish the task, hierarchical degenerated plate/shell element and hierarchical 18-node solid thick shell element are developed. -- The hierarchical degenerated plate shell element has four comer nodes, four mid-side nodes and one central node on the mid-surface of the shell geometry with five degrees of freedom at each node. For defining the geometry, Lagrangian shape functions were employed. P-version shape functions up to order seven were used for defining the displacement field. Crack tip singular plate/shell element was developed by enriching the displacement field of the element with the asymptotic displacement field near the crack tip. A hierarchical 18-node solid thick shell element has been developed. Sixteen nodes consisting 8 comer nodes and 8 mid-side nodes are used to define the geometry and eighteen nodes for defining the displacement field. Each node has three degrees of freedom. -- Some benchmark problems were analyzed in order to check correctness the elements of both plate/shell and thick solid elements. Analyses were performed to obtain the stress intensity factors of plate with through thickness crack using hierarchical degenerated plate/shell element. Numerical results obtained from the present element formulations are compared with analytical/numerical solutions available from literature. It is inferred that numerical results are in good agreement with the benchmark plate and shell problems.


identifier: Pula, Ravi Chandra <https://research.library.mun.ca/view/creator_az/Pula=3ARavi_Chandra=3A=3A.html>   (2005) An integrated system for fire and explosion consequence analysis of offshore process facilities.  Masters thesis, Memorial University of Newfoundland.

abstract: Offshore oil and gas platforms are well known for their compact geometry, high degree of congestion, limited ventilation and difficult escape routes. A small mishap under such conditions can quickly escalate into a catastrophe. Among all the loss producing events occurring offshore, fires and explosions are the most frequently reported process related accidents. They have potential to cause serious injury to personnel, major damage to equipment and structure, and disruption of operations. It is therefore necessary to study the characteristics of fires and explosions and thereby quantify the hazards I consequences posed by them In order to complete a detailed quantitative risk assessment study. This can eventually form a basis for the implementation of appropriate mitigation measures and emergency response plans to protect personnel in case of any eventuality. -- While there are many consequence models available to predict fire and explosion hazards -varying from simple empirical models to highly complex computational fluid dynamic models - only a few have been validated for the unique conditions found offshore. Furthermore, the complexity involved in simulating these models for quantifying the consequences makes the use of computer programs inevitable. Although, there are a few commercial software packages available for offshore quantitative risk assessment and consequence studies, they are very expensive and there is ample scope for technical improvements in these packages. -- This work is, therefore, focused on developing a scientifically sound tool for offshore consequence analysis. Technical improvements were incorporated by carrying out an extensive literature review on the existing consequence models (such as source models, dispersion models, ignition models, and fire and explosion models) and selecting the state-of-the-art ones most suitable for offshore conditions. Also, the implementation of a grid based methodology for impact assessment is innovative and is the highlight of this work. This work is considered to have produced a significant contribution in the areas of fire and explosion consequence modeling due to the development of additional models for predicting fire overpressures and analyzing the possibility of accident escalation (Domino effects analysis).


identifier: Purcell, Bryan Edward <https://research.library.mun.ca/view/creator_az/Purcell=3ABryan_Edward=3A=3A.html>   (1978) A study of social adjustment among children of one parent families.  Masters thesis, Memorial University of Newfoundland.

abstract: This study set out to examine the relationship between one parent family status and the social adjustment of children. The problems was conceptualized in terms of a symbolic interactionist orientation which viewed the child in the context of his interaction with significant others in his social environment. A comprehensive review of the literature concerning children in one parent families revealed considerable inconclusiveness. The formulation of confident inferences was hampered both by the fragmentary nature of much of the research, and by the complexity of the problem itself. However, it did lead to the proposition that one parent family status likely affects children’s’ social adjustment in an adverse manner. Social adjustment was measured in terms of eight aspects of interpersonal functioning – helping agency contact, school adjustment, peer relationships, perceived popularity, club membership, enuresis, discipline problems, and delinquency. – The proposition was tested through the use of inter-group comparisons between randomly selected samples of one and two parent families. Data were collected by means of a modified mail survey method utilizing a questionnaire administered to voluntary respondents. This method achieved an overall response rate of 67 percent. – Analysis of the research findings yielded non-significant differences, tending toward predicted directions, on seven of the eight components measured. The exception was in the area of school adjustment, where children of one parent families showed significantly poorer adjustment. – Further analysis showed that boys did not differ significantly from girls, in terms of their social adjustment. Widows’ children were found to show a significantly better adjustment than children in all other one parent families. However, this is likely due to factors other than the one parent family experience itself. – To conclude, the findings did not support the general proposition that one parent family status, in itself, causes poorer social adjustment in children. However, they did suggest that the one parent family presents a milieu in which factors, such as poverty, disorganization, and interpersonal problems are more likely to be present, and that these, in combination with one parent family status, are likely to affect social adjustment in a negative manner.


identifier: Purse, Edward R. <https://research.library.mun.ca/view/creator_az/Purse=3AEdward_R=2E=3A=3A.html>   (2006) Effective use of classroom technology in the Canadian Forces: determining the instructors' knowledge of and ascription to use of technology.  Masters thesis, Memorial University of Newfoundland.

abstract: There is a common perception that Canadian Forces (CF) instructors do not effectively employ classroom technologies. Based upon initial research, it appeared that instructor training might be part of the problem. Accordingly, a study was conducted to look at CF instructors' knowledge of and ascription to the use of classroom technologies. Using a small convenience sample of CF instructors and interviews with Instructor Supervisors, Standards personnel and Training Development Subject Matter Experts the research concluded that CF instructors have insufficient knowledge and skill in the employment of classroom technologies. However, they have a positive attitude towards using technology. The study also found two barriers to effective employment of classroom technologies: a lack of training, and a lack of evaluative infrastructure. The study recommends further research to identify the required technology competency standard, determine any training requirements, and establish an evaluation framework.


identifier: Putland, Jennifer Nancy <https://research.library.mun.ca/view/creator_az/Putland=3AJennifer_Nancy=3A=3A.html>   (1998) Microzooplankton bacterivory and herbivory in oceanic and coastal environments: comparisons of the subarctic Pacific with Newfoundland coastal waters.  Masters thesis, Memorial University of Newfoundland.

abstract: A comparative analysis was used to estimate top-down control by microzooplankton on microbial prey and the relative ingestion of various prey by microzooplankton. Using the dilution technique (Landry and Hassett 1982), the rates of ingestion of autotrophic and heterotrophic picoplankton and total (>0.7μm) phytoplankton by microzooplankton were measured during spring, summer, and winter from 1995 to 1996 in the surface layers of both the subarctic Pacific (SAP) and Newfoundland coastal waters (NCW). In the SAP, size fractionated dilution assays were also conducted to determine the ingestion by small (<35 μm) and large (<202 μm) microzooplankton. The microzooplankton grazing impact (measured as the percentage of prey potential production ingested) in the SAP was primarily by <35 μm protists and was greatest on bacteria, Synechococcus, and <35 μm phytoplankton. The mean values of potential production ingested by microzooplankton were ca. 109%, 123%, 65%, and 28% for bacteria, Synechococcus, <35 μm and 5-202 μm phytoplankton, respectively. In NCW, the mean values of potential production ingested by microzooplankton were ca. 88%, 167%, and 97% for bacteria, autotrophic picoplankton, and >0.7 μm phytoplankton, respectively. Total ingestion of microbial carbon varied seasonally in the SAP and NCW, with minimum (ca. 2 to 4 μg C• L⁻¹ • d⁻¹) and maximum (6 to 13 μg C• L⁻¹ • d in the SAP and ca. 20 μg C•L⁻¹ • d⁻¹ in NCW) total ingestion rates during winter and summer, respectively. In the SAP and NCW, autotrophic and heterotrophic picoplankton generally represented a large portion (>40%) of the carbon ingested by microzooplankton. This was because microzooplankton generally ingested prey proportional to their availability and autotrophic and heterotrophic picoplankton represented most (>40%) of the microbial biomass. The comparative approach used in this thesis led to two important quantitative generalizations about microbial food web processes in subarctic waters. First, microzooplankton, on average, ingest ca. 80% and 100% of picoplankton (autotrophic and heterotrophic) and > 0.7 μm phytoplankton potential production, respectively. Second, autotrophic and heterotrophic picoplankton represent ca. 69% of the carbon ingested by microzooplankton. These quantitative generalizations represent important advances in microbial ecology as they facilitate hypothesis testing and the detection of unusual systems.


identifier: Pyle, Nathan R. <https://research.library.mun.ca/view/creator_az/Pyle=3ANathan_R=2E=3A=3A.html>   (2004) Letters about letters: clients' written reflections on therapeutic letters.  Masters thesis, Memorial University of Newfoundland.

abstract: Therapeutic letter writing as an adjunct to counselling has seen an increase in use by counsellors in the last decade yet limited research attention has been devoted to how clients receive such documents. This study, through a qualitative design, investigated the experiences of 7 clients who had received a letter from their counsellor during therapy. The data collected and analyzed was in the form of letters written by clients to the researcher. Four themes emerged from the analysis of the clients' letters: Curiosity and Connection; Consolidation: Relationships and Session Content; Facilitating and Hindering; and In Perpetuity: The Tangible and Lasting Presence of Letters. -- The participants' written words to the researcher reflect that the therapeutic letter they received played an active role in their counselling experience. The participants' letters offer guidance and thought for counsellors considering and engaging in therapeutic letter writing. These are reviewed along with a discussion of the influences of the internet and email and future research possibilities.


identifier: Qi, Jianlong <https://research.library.mun.ca/view/creator_az/Qi=3AJianlong=3A=3A.html>   (2007) Gene ontology driven feature selection from microarray gene expression data.  Masters thesis, Memorial University of Newfoundland.

abstract: Structural and functional data from analysis of the human genome has increased many fold in recent years, presenting enormous opportunities and challenges for machine learning. In particular, gene expression microarrays are a rapidly maturing technology that provides the opportunity to assay the expression levels of thousands or tens of thousands of genes in a single experiment. -- In the analysis of microarray gene expression data, one of the main challenges is the small sample size compared with the large number of genes. Among these thousands of genes, only a small number of genes are relevant. To cope with this issue, feature selection, which is the process of removing features not relevant to the labeling, is an essential step in the analysis of microarray data. In this thesis, we present work in this area. -- In literature, most of the feature selection methods are solely based on gene expression values. However, due to the intrinsic limitations of microarray technology and a small number of samples, some expression levels may not be accurately measured or they are not a good estimation of the underlying distribution. This can reduce the effectiveness of feature selection. To resolve this deficiency, we explore the possibility of integrating Gene Ontology (GO) into feature selection in this work. GO represents a controlled biological vocabulary and a repository of computable biological knowledge. (Details will be introduced in the subsequent sections.) -- The main contributions of this thesis are the following: (1) a statistical assessment of the capability of GO based similarity (semantic similarity) in catching redundancy, and a new similarity measure that takes into account both expression similarity and semantic similarity, and (2) a method to incorporate GO annotation in the discriminative power of genes, which evaluates genes based on not only their individual discriminative powers but also the powers of GO terms annotating them.


identifier: Quibell, Erin A. <https://research.library.mun.ca/view/creator_az/Quibell=3AErin_A=2E=3A=3A.html>   (2006) Writing cookbooks for the kitchens of the pastpresenture: a preliminary dystopian reading of Hermann Hesse's The Glass bead game.  Masters thesis, Memorial University of Newfoundland.

abstract: The purpose of this thesis is to show that Hermann Hesse's The Glass Bead Game (1943) is a part of the dystopian tradition of the early 20th Century. Hermann Hesse's novel covers many of the same themes and ideas as We ( 1924) by Yevgeny Zamyatin, Brave New World (1932) by Aldous Huxley and 1984 (1949) by George Orwell. As these dystopias appear to set the standard for the genre, I would like to expound upon the themes and ideas that they discuss, in order to clarify the standard to which I will hold Hesse's novel. The thesis begins with an exploration of the life of Hermann Hesse and his contemporaries, and a look at the motivations behind each of the novels mentioned above. The discussion then expands into a thematic and comparative analysis of the ideas of thought control and propaganda, the treatment of the outsider, i.e., the protagonist, and the treatment of women in dystopian literature, as well as the function of science, technology and war in the genre. This is followed by an exploration of the function of history and the closed nature of the dystopian state. After proving the merits of seeing Hesse's novel as a part of the dystopian tradition, the thesis concludes with a brief discussion of what Hesse may have been criticizing in his novel, as all novels of the genre are a criticism of something in the author's present-day reality.


identifier: Rahman, Md. Asikur <https://research.library.mun.ca/view/creator_az/Rahman=3AMd=2E_Asikur=3A=3A.html>   (2013) A geovisual analytics approach to spatial and visual feature organization and exploration.  Masters thesis, Memorial University of Newfoundland.

abstract: Marine sonar data sets often cover large spatial regions and consist of many hundreds of thousands of sonar pings. The visual representations of the sonar data (echograms) are normally shown as long and narrow ribbons of data. The main challenge with analyzing sonar data using echograms is that the ratio of the length to the height can be very high. As analysts zoom in to show the echogram in sufficient detail, much of the contextual information is lost and horizontal scrolling is necessary to explore and compare the data. In this thesis, a novel approach is proposed that couples a technique for visually clustering slices of the echogram based on visual similarity, with a geovisualization method that shows the spatial location of echogram slices on a virtual globe. A field trial with real-world data analysts was conducted and the results of the field trial illustrate the benefits of this approach.


identifier: Rahman, Moursheda <https://research.library.mun.ca/view/creator_az/Rahman=3AMoursheda=3A=3A.html>   (1996) Problems, innovations and solutions: a case study of English Language Teaching (ELT) in Bangladesh.  Masters thesis, Memorial University of Newfoundland.

abstract: This is a case study which was directed to investigate some of the problems in English language study and teaching that are presently being experienced at various levels of the educational system in Bangladesh. This study deals with the changing of English Language Teaching (ELT) methods in the light of students' needs and interests. It explores why and how present EL T methods fail to satisfy students' needs in learning to speak English more accurately and fluently. -- The study in this thesis is primarily qualitative and the methods of data collection consist of document study and questionnaire survey. The results of the study show that many English teaching activities which teachers commonly used fail to satisfy students' needs and interests. This lacking of interest has a negative impact on motivation to study English. Some negative feelings, such as frustration and boredom, have developed due to the uninteresting and unenjoyable teaching activities. -- The study also shows that there is a striking difference between what students believe to be enjoyable, and effective for making language study fruitful and what teachers believe. Students perceive that communicative activities are helpful for making a class enjoyable as well as effective for enhancing their English language proficiency. On the other hand, though teachers believe both communicative and non-communicative activities are important, non-communicative ones are valued more highly than the communicative ones. -- The mismatch between students' needs and expectations and the pedagogical philosophy and methods of teaching causes serious harm for learning a language. In recognition of this, the researcher recommended some solutions on the basis of the findings of the study. The discussion and recommendations generated from the research should be useful for changing English Language Teaching Methods in Bangladesh. It should also be useful to teachers in their quest for activities that are suited to their classroom environments, and administrators, as they grapple with curriculum development and programs for English language learning in Bangladesh.


identifier: Rahman, Shafiqur <https://research.library.mun.ca/view/creator_az/Rahman=3AShafiqur=3A=3A.html>   (1994) Modulatory function of serotonin in rat neocortex: 5-HT2A and N-methyl-D-aspartate receptor interactions.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Please see thesis for abstract.


identifier: Rahman, Shibly <https://research.library.mun.ca/view/creator_az/Rahman=3AShibly=3A=3A.html>   (2006) Development of an expert system to conduct automated HAZOP studies.  Masters thesis, Memorial University of Newfoundland.

abstract: Process hazard analysis is an important step to identify risk in a process facility. Automation of hazard identification requires efficient search techniques with the aid of a knowledge base. It also requires an easy menu driven interface so that an ordinary user can interact with the system with minimal intervention from an expert. One of the models to implement automation of hazard analysis is HAZOP (hazard and operability) study. Fault propagation, an aspect of HAZOP analysis, defines the propagation of deviation among equipment in a process facility. To identify all the possible hazards and their faster access, it is necessary to develop an efficient fault propagation algorithm with a knowledge-base. The existing tools performing automated HAZOP analysis does not provide any means to identify the propagation of deviation to all downstream equipment. Also some of the developed tools are slower in data extraction, require an expert to interpret the analyzed result, focuses more on causes of deviation in a process facility than the consequences, and is specific to process facility structure. -- This thesis focuses on development of an expert system to perform automated HAZOP analysis with a unique fault propagation algorithm that will identify propagation of deviation to all downstream equipment in a process facility. Furthermore, the expert system has a knowledge base that identifies all general causes and consequences of equipment failure in a process facility and enables effective and efficient decision making tool for the user of the system.


identifier: Ralph, Audrey S. <https://research.library.mun.ca/view/creator_az/Ralph=3AAudrey_S=2E=3A=3A.html>   (1956) The relation of mesomeric effects and ultraviolet light absorption data.  Masters thesis, Memorial University of Newfoundland.

abstract: A method for the determination of mesomeric effects from ultraviolet light absorption data is critically discussed.  For halogen-substituted compounds, the method gives an order of mesomeric effects different from that which is usually accepted for the halogens.


identifier: Ralph, Freeman E. <https://research.library.mun.ca/view/creator_az/Ralph=3AFreeman_E=2E=3A=3A.html>   (2000) Robust methods of finite element analysis: evaluation of non-linear, lower bound limit loads of plated structures and stiffening members.  Masters thesis, Memorial University of Newfoundland.

abstract: The scope of this thesis is to investigate robust methods of FEA to evaluate non-linear lower bound limit load estimates of ship type structures. The robust methods used in this thesis include the r-node method, Progressive Modulus Reduction (PMR) method, and the mα method. The results of each technique are compared to the results of full nonlinear finite element analysis, analytical solutions and lab test data where available. The structures modelled in this thesis included a rectangular indeterminate beam, three types of mainframe stiffeners (flat bar, angle and tee), a flat bar stiffened panel and an Arctic icebreaker grillage. -- Robust methods make use of a modulus reduction scheme to redistribute and relax peak stresses in the structure. By iterating and selectively correcting the local modulus in finite element models, the form of a limit state stress distribution can be evaluated. In order for the limit loads evaluated based on this limit state stress distribution to be lower bound, the conditions of the stress field in the structure must be "statically admissible.” -- The basis of the r-node method is the identification of redistribution nodes or r-nodes within a structure, which are essentially load-controlled locations. Identification of exact r-node locations may be difficult to achieve with finite mesh densities particularly in complex structures. As well, complicated structures pose added difficulties in achieving a progressive r-node stress relaxation with increased iterations. This may be partly attributed to the difficulty in locating exact r-node locations. -- The mα method was developed in an attempt to improve lower bound estimates of limit loads, making use of just two linear elastic analyses. The notion of a "reference volume is used in conjunction with the "theorem of nesting surfaces" and the concept of leapfrogging to a near limit state to evaluate lower and upper bounds on the limit load. The results of this thesis indicate that for complicated structures~ improved limit load estimates can be obtained if four or more iterations of moduli are carried out. Reducing the rate of relaxation (reducing modulus adjustment index q) may enhance convergence characteristics, but results in a higher state of limit stress evaluated. -- The Progressive Modulus Reduction (PMR) method, which is an extension of the elastic compensation method, systematically adjusts or reduces the moduli of the pseudo-elastic stressed elements of a structure to synthesise the growth of the yield zone. The PMR method is used to evaluate the non-linear deflection of the structure for applied loads up to the limit load. -- In general the robust methods are an attractive alternative for evaluating limit loads of ship type structures. Results are a significant improvement over classical methods and are either close for simple structures or sufficiently conservative when compared to full non-linear FEA results. Each robust method models material non-linearities and hence evaluates good estimates of a non-linear limit load. Also, because the solution process is stable, convergence difficulties, encountered with full non-linear analysis, are avoided. Limit loads can be evaluated in a cost effective manner, which is particularly attractive at the initial stages of design.


identifier: Ramachandran, Shahunthala Devi <https://research.library.mun.ca/view/creator_az/Ramachandran=3AShahunthala_Devi=3A=3A.html>   (1997) Toxicity associated with sediments from Malaysian estuarine environment.  Masters thesis, Memorial University of Newfoundland.

abstract: With the rapid industrialization in the region marine pollution assessment in South East Asia is an ongoing and increasingly important environmental science. One of the areas of concern being sediment toxicology, for it has been identified to be a sink for most pollutants entering the aquatic environment. Owing to the scarcity of information on sediment toxicity bioassays, there is a need to identify species as test organisms for this region. -- For the purposes of this study, an effects based approach known as Sediment Quality Triad was employed, where three components of environmental concern, namely sediment chemistry, sediment bioassays and benthic fauna alterations were investigated at a chosen location. The study area was a portion of coastline in Peninsula Malaysia with three estuaries, two of which, Sg. Juru and Sg. Perai, have been identified as receiving pollutants from the rivers feeding them. The third, Sg. Tambun, was included for comparison purposes. A reference location of minimal or insignificant contamination and reference sediment from a test organism collection site were also tested to obtain background or reference contamination values. Emphasis was placed on the bioassay portion of the triad to observe the applicability of local test animals to obtain reliable data from established toxicity tests and protocols. -- The data for each study site comprising sediment chemistry, sediment bioassays and benthic macroinfauna composition were compiled and normalized to the reference values to obtain ratio-to-reference figures and presented in a triangular format, the area of which depicts the degree of pollution induced degradation. -- Three local species were tested with reference toxicants, the sea urchin (Diadema setosa); oyster (Crassostrea iredalei) and mud crab (Scylla serrata), all had acceptable sensitivity and while the sea urchin was most sensitive to copper while the mud crab was most sensitive to cadmium. With regard to sediment bioassays, an amphipod, Photis longydactylus, seemed very promising for gross sediment testing, while a polychaete worm, Perinereis nuntia, has potential to being amenable for laboratory culture and subsequent use in chronic bioassays. -- The sediment quality of the three sites revealed Sg. Juru to be most polluted and toxic, but the in situ effects on the benthic community needs to be investigated further. Sg. Perai was moderately toxic and is most likely being contaminated by something other than metals. Sg. Tambun was the least polluted, and least toxic, with a better assemblage of benthic fauna.


identifier: Randell, Edward <https://research.library.mun.ca/view/creator_az/Randell=3AEdward=3A=3A.html>   (1992) Studies on the effect of rat C-reactive protein on platelet aggregation and secretion.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Rat C-reactive protein (CRP) is a member of a family of proteins, collectively termed C-reactive proteins, present in a variety of species, from simple invertebrates to humans. In this thesis, the effect of rat CRP on platelet function was examined. Rat CRP inhibited, in a dose-dependent manner, platelet aggregation and serotonin secretion using either ADP or thrombin as agonist. Inhibition of platelet aggregation induced by these agonists required the binding of rat CRP to platelets. This binding was specific, saturable, of high affinity and calcium-sensitive. The rat [¹²⁵I]CRP bound to platelets was displaced by either unlabelled rat CRP or phosphorylcholine. This binding was also inhibited by either rabbit CRP or phosphorylcholine. -- Rat CRP inhibited platelet activating factor (PAF)-induced platelet aggregation. Results showed that the inhibition of PAP-induced platelet aggregation required the binding of rat CRP either to platelets or to PAF. -- Platelet functional responses are mediated by the participation of platelet phospholipases in signal transduction pathways. Therefore the effect of rat CRP on agonist-induced platelet phospholipase activity was examined. The results confirmed the presence of phosphatidylcholine-specific phospholipase C (PC-PLC) in rat platelets. This platelet PC-PLC was inhibited by rat CRP in a dose-dependent manner. In contrast, rat CRP did not inhibit either phospholipase A₂ or phosphatidylinositol-specific phospholipase C activity. It was, therefore, concluded that if the formation of phosphatidylcholine-derived diacylglycerol (DAG) by PC-PLC is involved in the regulation of platelet functional response, then the inhibition of DAG formation by rat CRP may be critical in the observed inhibition of platelet aggregation and serotonin secretion by rat CRP.


identifier: Ranganathan, Lavanya <https://research.library.mun.ca/view/creator_az/Ranganathan=3ALavanya=3A=3A.html>   (2004) Purification and characterization of major gelatin-cleavage activities in the apically located extracellular matrix of the sea urchin embryo.  Masters thesis, Memorial University of Newfoundland.

abstract: The hyaline layer is an apically located extracellular matrix that surrounds the sea urchin embryo from the time of fertilization until metamorphosis occurs. Gelatin-cleavage activities were absent from freshly prepared hyaline layers but a dynamic pattern of activities appeared when layers were incubated at 15°C or 37°C in UV-irradiated and millipore-filtered sea water. Three major gelatin cleavage activities at 55-, 41-, and 32 kDa were induced. The 55 kDa species was identified as the major activity at 37°C, while the 41- and 32 kDa activities were the minor species. In contrast, both the 41- and 32 kDa activities were the major species at 15°C, the ambient temperature for Strongylocentrotus purpuratus. The 55 kDa and other higher molecular weight species appeared only after 92 hours of incubation at 15°C. Interestingly, the gelatin-cleavage activities were absent when the hyaline layers were incubated at 37°C in millipore-filtered sea water containing 10 mM benzamidine hydrochloride, a reversible serine protease inhibitor. The minimum ionic requirements for the 15°C induction of the three activities were determined: both the 55- and 41 kDa species required 300 mM NaCl, while the 32 kDa activity required both 3 mM CaCl₂ and 200 mM NaCl. However, none of these activities required MgCl₂ for their induction. -- The 55-, 41- and 32 kDa gelatinase activities could be dissociated from the hyaline layers when incubated in 50 mM Tris-HCI, pH 8.0 containing 5 mM EDTA for 24 hours at 37°C. All three species were purified using gel filtration chromatography. In both qualitative and quantitative assays, the 55 kDa gelatinase activity was inhibited by 1,10 phenanthroline (a Zn²⁺ - specific chelator), ethylenediamine tetraacetic acid or ethylenebis (oxyethylenenitrilo) acetic acid. In the presence of 2 mM 1, 1 0-phenanthroline, the 55 kDa species was inhibited 93.1 %. Variations in the percent inhibition of the 55 kDa activity, in the range of 33-1 00% were observed in the presence of 5 mM ethylenebis (oxyethylenenitrilo) acetic acid. The quantitative gelatinase assay demonstrated that 10 mM CaCl2 stimulated 58.1% of the EGTA-inhibited (33%) 55 kDa species, which resulted in complete recovery of the activity. On the other hand, only 28.2% activation of the EGTA-inhibited (33%) 55 kDa was noticed in the presence of 50 mM, which recovered up to 85% of the total activity. The calcium reactivation of EGTA-inhibited (100%) 55 kDa occurred with an apparent dissociation constant of 1.2 mM. Since the hyaline layer is in direct contact with sea water, which contains 10 mM CaCl₂, 50 mM MgCl₂ and 500 mM NaCl, the effects of MgCl₂ and NaCl were also studied. Our results show that 85% of the total activity of the 33% EGTA-inhibited 55 kDa was reconstituted in the presence of 50 mM MgCl₂. The 55 kDa gelatin-cleavage activity was inhibited 57.6% in the presence of 500 mM NaCl. The NaCl-dependent inhibition suggests a possible mechanism for regulating the 55 kDa gelatinase activity. --  Developmental substrate gel analysis was  performed using embryos of various developmental stages. The 55 kDa species comigrated with a gelatin cleavage  activity present in 45 hours-old embryos and persisted until 93 hours after fertilization. This result confirms the presence of the 55 kDa species in the sea urchin embryo. We conclude that the sea urchin ECM, the hyaline layer has several gelatin-cleavage activities including a 55 kDa species, which is a Zn²⁺- and Ca²⁺ dependent, gelatin-specific endopeptidases that belongs to the matrix metalloproteinase class of extracellular matrix remodeling enzymes. Our results suggest that the 55 kDa is secreted as an inactive precursor, which is activated by one or more serine proteinase activity following incubation in MFSW at 15°C or 37°C. Our data indicate that the 55 kDa species might be the precursor of the 41 kDa gelatinase activity.


identifier: Rangar, Rupinder Singh <https://research.library.mun.ca/view/creator_az/Rangar=3ARupinder_Singh=3A=3A.html>   (1979) Project management information system for ocean research projects.  Masters thesis, Memorial University of Newfoundland.

abstract: Newfoundland Oceans Research and Development Corporation Limited (NORDCO) was established in 1975 as a crown corporation for the exploration of opportunities related to ocean services and technology. By exploring these opportunities, it is to enhance the capabilities of the Province to undertake research and to provide services for developing the technology required for ocean research in the North West Atlantic. -- The company mandate requires it to operate on an aggressive commercial basis to substantially recover its operating costs. To achieve this objective, among other things, the company has introduced a project management system to control its research projects. -- This project report addresses the problem of conceiving, designing and implementing a management information system to suit the specific needs of NORDCO. Computer program Project Management System IV (PMS-IV), a general purpose project management program, has been adapted for research projects. The elements of management information in ocean research environment have been identified, the responsibilities of staff towards project management have been analyzed and suitable information packages have been developed. Both computerized and manual reports are presented to the management on a monthly basis.


identifier: Rao, Anuradha Shakuntala <https://research.library.mun.ca/view/creator_az/Rao=3AAnuradha_Shakuntala=3A=3A.html>   (2005) Dispersal of young African black oystercatchers (Haematopus moquini): movement patterns, individual characteristics, habitat use and conservation implications.  Masters thesis, Memorial University of Newfoundland.

abstract: The African Black Oystercatcher (Haematopus moquini) is a shorebird endemic to southern Africa, and is internationally listed as "Near-threatened''. Its population is increasing following protection measures and the invasion of the mussel Mytilus galloprovincialis. Although adults of the species are sedentary, dispersal up to 2800 km by immature birds was discovered in 1998. To ensure that conservation programs address the species' needs throughout its life cycle, this project determines the locations of importance to oystercatchers between the start and end points of their dispersal. -- Young African Black Oystercatchers disperse to a range of traditional locations along the coasts of South Africa and Namibia. Dispersal roosts along the Atlantic coast allow young birds to avoid competition for food with adults. Of the total number of South African-bred birds (n = 1 06) whose dispersal endpoints were confirmed, 65% dispersed to Namibia, 11% to north-western South Africa, 19% within south-western South Africa, and 5% dispersed along the south coast of South Africa. At least 22% of resighted birds departed in their first year of life, and 25% returned to the vicinity of their natal sites in their third or fourth year of life. At least 4% dispersed later than their first year. Body condition, sex and relative hatch date did not differ significantly between immature oystercatchers dispersing different distances. -- Roosts were mostly, but not exclusively, located in wave-sheltered areas containing both rocky and sandy substrata and with wide visibility angles allowing for vigilance against predators. The birds fed in the immediate vicinity of the roost sites at low tide. The largest roosts were in sheltered areas near river mouths; these sites were characterized by lower limpet numbers than smaller roosts. All but one roost checked also contained other shorebird and seabird species. -- Because these sites are traditional and used by several species for various purposes during a sensitive time of the oystercatchers' life cycle, they are important for conservation. However, several roost sites are located in areas zoned for diamond mining or development. Diamond mining can, at least temporarily, reduce the local abundance of oystercatcher prey, thereby eliminating the area as foraging habitat. Ribbon development on the coast should be discouraged to maintain undisturbed habitats, and coastal mining and mining-related activities should not be allowed in areas used by roosting or foraging shorebirds.


identifier: Rao, Gopalakrishna M. <https://research.library.mun.ca/view/creator_az/Rao=3AGopalakrishna_M=2E=3A=3A.html>   (1973) Adsorbed and absorbed hydrogen associated with lead cathodes in aqueous perchloric acid.  Doctoral (PhD) thesis, Memorial University of Newfoundland.

abstract: Please see thesis for abstract.


identifier: Rashid, Mohammad Imtiaz <https://research.library.mun.ca/view/creator_az/Rashid=3AMohammad_Imtiaz=3A=3A.html>   (2004) Concrete slabs reinforced with GFRP bars.  Masters thesis, Memorial University of Newfoundland.

abstract: The performance of non-ferrous reinforcing material, in the form of GFRP bars, as the primary reinforcement of flat plates is investigated. In total, nine interior slab-column connections, that represent full scale specimens, were made and tested to failure at the structural laboratory of MUN. The 1900 x 1900 mm square slabs were simply supported along the four edges. The reinforcement ratio, concrete strength and effective depth were the main variables. Transverse central load was applied to the slabs through a central column stub. The load was applied in displacement control. The structural behaviour of the test specimens was investigated in terms of load-deflection relationship, crack pattern and width, deflection profile, concrete and FRP strains, failure mode and ultimate failure load. The effects of those variables on the behaviour were examined. Eight slabs were made with GFRP bars commercially known as ISOROD®. One slab was made with traditional steel bars. Two slabs were with high strength concrete, over 85 MPa. The rest of the slabs were made with normal strength concrete. Two slabs were 200 mm thick with an effective depth of 150 mm. The other slabs were 150 mm thick with an effective depth of 100 mm. All GFRP slabs were designed with over reinforced section capacity. -- The test results revealed that slabs reinforced with GFRP bars exhibit higher deflection and greater crack width compared to similar slabs with traditional steel bars. The failure loads are also lower than those of slabs with traditional reinforcement. Nevertheless, the structural performance of the GFRP reinforced slabs can be improved by increasing the slab depth. High strength concrete increases the ultimate failure load but does not significantly improve the serviceability of the slabs. -- The existing code formulas were examined to check their applicability in predicting the shear capacity of two-way slabs reinforced with GFRP bars. Elastic plate theory was used in an attempt to calculate the flexural capacity of such slabs. The results revealed that, with proper modifications, the equations that use a cubic root relationship for concrete strength and include the effect of the reinforcement ratio are able to predict the capacity of the slabs with reasonable accuracy. -- An existing mechanical model was adopted and modified. That model had an unidentified limitation. The limitation is described and removed by modification of model geometry. Further modification is made to incorporate FRP's properties and structural behaviours and thus the model is made applicable for slabs reinforced with FRP as well as for slabs reinforced with traditional steel bars. The model results were compared to the slab test results available in literature with both steel and FRP reinforcement. The model gives a fairly good agreement between the predicted and experimental punching failure loads.


identifier: Rathnayaka, Samith <https://research.library.mun.ca/view/creator_az/Rathnayaka=3ASamith=3A=3A.html>   (2011) System hazard identification prediction prevention (SHIPP) methodology predictive accident modeling approach.  Masters thesis, Memorial University of Newfoundland.

abstract: A process accident occurs as a result of a sequence of events initiated by deviation in the process parameters and/or failure or malfunctioning of one or more components. Many process accidents are controlled and mitigated before they escalate to major events. Unfortunately some do go on to produce catastrophic consequence s. As the size and complexity of processing facilities increase, the potential risk posed by accidents is increasing. Operational safety could be improved by giving emphasis to the prevention of incidents, rather than relying on control and mitigative measures. This method is referred to as an "inherently safer approach ". To prevent major, though infrequent, event occurrence, it is important to consider accident precursors (symptoms of hazards) such as operational deviations, mishaps, and near misses, in order to prevent abnormal events at source rather than controlling or mitigating them. -- The objective of this research is to present a novel methodology known as System Hazards Identification, Prediction and Prevention (SHIPP) for process accident modeling and prevention. In this methodology, a new process accident model with predictive capabilities is developed. The SHIPP is a systematic methodology to identify, evaluate, and model the accident process, thereby predicting and preventing future accidents in a process facility. In this methodology, process hazard accidents are modeled using safety barriers. The model relies on process history, accident precursor information, and accident causation modeling. The fault tree and event tree analysis techniques are used to enhance the accident model and to represent a holistic picture of the cause-consequence mechanism of the accident process. Quantitative analysis has two aspects: updating and prediction. The model is able to capture the process operational behaviour, and update the accident likelihood using the Bayesian updating mechanism. The predictive model forecasts the probability of a number of abnormal events occurring in the next time interval. Application of this methodology is demonstrated by a case study. The quantitative results demonstrate that the probabilities of abnormal events dramatically change over time as new information is observed, and the adequacy and accuracy of model prediction is better in short term prediction rather than long term prediction. -- Through the SHIPP methodology, qualitative and quantitative analyses provide insight to identify critical safe ty barriers and functions, and determine the likelihood of failure of these measures. Combining management oversight, human factor and engineering analyses, the SHIPP methodology provides a comprehensive, systematic approach to manage a process system risk.


identifier: Rattenbury, Christine Ruth <https://research.library.mun.ca/view/creator_az/Rattenbury=3AChristine_Ruth=3A=3A.html>   (1987) Reminiscence group therapy with elderly institutionalized clients.  Masters thesis, Memorial University of Newfoundland.

abstract: A controlled pre-post research design was used to test whether reminiscence group therapy had unique effects which were particularly beneficial to the psychological well-being of elderly institutionalized adults (the reminiscence model) or whether the social interactions of a discussion group was the factor responsible for any benefits observed in psychological well-being (the social interaction model). Also investigated was the question of whether improved psychological well-being generalized to better mood, higher activity level and more positive activity on the ward. Finally, the question of whether greater participation in the therapy group led to greater improvement in psychological well-being was studied. Twenty-four subjects were selected from St. Luke 's Home in St. John's Nfld. and were randomly assigned to one of three groups: a reminiscence treatment group; a treatment control group focussing on current topics; and a no-treatment control group. Eight 30-minute therapy sessions were held for subjects in groups one and two at the rate of two sessions per week. Results showed a significant improvement in psychological well-being in both treatment groups whereas there was no improvement for the control group. Mood was also significantly improved in both treatment groups. Higher activity levels and improved ward behavior were not found as a result of either intervention. A significant correlation was found between greater group participation and greater psychological well-being. Results were interpreted as supporting the social interaction model. Reminiscence group therapy was not found to have uniquely beneficial effects; rather, a discussion group of either format was found to be an effective method of increasing psychological well-being in elderly institutionalized adults.