This research examined the technical and economic feasibility of harnessing flare gas emissions from oil fields. The outcome would provide the basis for a substantial re-utilization of this waste energy due to the current practice of flaring and use it alternatively as energy for powering oil fields, rural electrification and desalination. Nigeria is used as a case study. Burning fossil fuels have grave environmental impact, amidst increasing global concerns over harmful emissions. This research addresses resource decline and suggests divestment as a partial cure. The gas turbine is subject to degradation of its components as it is used. Though several methods of assessing gas turbine degradation have been developed with varying degrees of success, no one method has addressed issues pertaining to associated gas and its effects on degradation with divestment. Simulation of two single shaft, heavy duty industrial gas turbines; and three aero-derivative industrial gas turbines of the heavy medium and light capacity ranges were carried out for varying operating conditions, to ascertain the effects of degradation when run on associated gas. Thereafter, optimizations for the best power plant engine mix and the least cost of electricity were carried out. Genetic algorithm was used to assess a population of 10,000 individuals over 500 generations; convergence was achieved for different configurations of the five study engines at discount rates of 5% and 10%, over three power ranges. The divestment pattern starts with the lightest aero-derivative industrial gas turbine; the best power plant selection was limited to the two lightest aero-derivatives in the fleet, completely ignoring the heavy engines. A techno-economic, environmental and risk assessment model comprising performance, emission, economics and risk modules was successfully developed to assess gas turbine degradation with divestment. Using this tool, it was confirmed that associated gas usage resulted in degradation of gas turbine performance, an increase in gas collection as well as operation and maintenance costs. Also there was increasingly higher creep life consumption during slow, medium and fast degradation scenarios for both engine sets. The novel technical contribution of the research work therefore is the influence of degradation on the economic use of associated gas as fuel in gas turbine power generation; and the implementation of divestment in the face of fuel decline.

With the advent of resource shared environments such as the Cloud, virtualization has become the de facto standard for server consolidation. While consolidation improves utilization, it causes performance-interference between Virtual Machines (VMs) from contention in shared resources such as CPU, Last Level Cache (LLC) and memory bandwidth. Over-provisioning resources for performance sensitive applications can guarantee Quality of Service (QoS), however, it results in low machine utilization. Thus, assuring QoS for performance sensitive applications while allowing co-location has been a challenging problem. In this thesis, we identify ways to mitigate performance interference without undue over-provisioning and also point out the need to model and account for performance interference to improve the reliability and accuracy of elastic scaling. The end goal of this research is to leverage on the observations to provide efficient resource management that is both performance and cost aware. Our main contributions are threefold; first, we improve the overall machine utilization by executing best-effort applications along side latency critical applications without violating its performance requirements. Our solution is able to dynamically adapt and leverage on the changing workload/phase behaviour to execute best-effort applications without causing excessive interference on performance; second, we identify that certain performance metrics used for elastic scaling decisions may become unreliable if performance interference is unaccounted. By modelling performance interference, we show that these performance metrics become reliable in a multi-tenant environment; and third, we identify and demonstrate the impact of interference on the accuracy of elastic scaling and propose a solution to significantly minimise performance violations at a reduced cost. / <p>QC 20160927</p>

A Research Report submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg in partial fulfilment of the requirements for the degree of Master of Science. Johannesburg, February 2013. / The degree that different landscape features influence elephants use of space in the Kruger National Park and surrounding private game reserves (Balule, Timbavati, Klaserie and Umbabat) is not known. The aim of my study was to assess landscape features which influence elephant space use at two different spatial scales: at a large scale representing home range selection within the landscape and a small scale representing core area selection within the total home range. I investigated the space use of 15 male and 6 female adult elephants over a three year period (June2007-May 2010), using GPS data and satellite mapping analysis. The features selected for analysis as possible barriers to elephant space use were anthropogenic (fences, roads, railway lines and infrastructure) and natural features (rivers, geological features and vegetation). I also investigated the total and core home range size of elephants and whether elephant space use differed by sex and season. Males had larger total home ranges than females irrespective of season, but there were no size or seasonal differences of core home range size between the sexes. Elephants used features differently at the two spatial scales, differed in the use of features between seasons, and there was a difference between the sexes in the use of features. Fences, railways, rivers (in the wet season), geological features and vegetation types were the features that influenced elephant space use, and could be possible barriers at the large scale. Elephants occurred close to fences which possibly restricted their space use. Elephants also occurred close to railway lines but they might not have crossed the railway line. As expected elephants occurred less often at close distances to rivers in the wet season which could possibly be as a result of higher rainfall in this season, preventing elephants from crossing their usual riverbed corridors. Male and female elephants differed in the use of vegetation types found on particular geological features: males selected basalt and females selected granite areas for both the dry and wet seasons. Both male and female elephants were associated with a wider variety of vegetation types in the dry season, possibly because the limited food availability causes elephants to cover larger areas in search of food. Elephant space use was therefore governed by several features that may or may not restrict space use. My study, using satellite mapping analysis, can suggest what hinders movements of elephants and what is essential for assisting elephant space use, which could help conservation efforts for reserve design and corridor formation between reserves.

A Research Report submitted to the Wits School of Education, Faculty of Humanities, University of Witwatersrand in partial fulfilment of the requirements for the degree of Masters of Education by combination of coursework and research. Johannesburg, March 2016 / Despite all events unfolding in space, mainstream research often overlooks the influence of space in teaching and learning. There is some research, however, showing how space makes various educational experiences available. This research adds to a growing body of spatial research in education. The research reconceptualised space in a grade 6 English classroom in order to explore ways of working with space. The research sought to understand (1) spatial relations in the classroom, (2) the redesign of space and (3) the experiences of living in a reconceptualised space. In this case study thirty one grade 6 learners and a teacher collaboratively redesigned their classroom space. Observations were recorded over a six week period. Four Community of Enquiries and interviews were conducted with participants. Using Lefebvre’s (1991) spatial theory and Foucault’s (1977) work on knowledge, power and discourse the data was analysed systematically paying special attention to learners perceptions and behaviours prior to and following the reconstitution. The findings show how relations between participants are governed by time and manifest in the spatial layout of the classroom. Prior to the reconstitution the normalisation of theft and strong gendered boundaries created antagonistic relations amongst participants. Learners also expressed a strong desire to belong in the classroom and the broader schooling community. Having reconstituted the space, space also reconstituted the participants. In the redesigned space learners’ agency and voice was amplified and the space became more conducive to learning. The benefits of the reconceptualisation were learners entering into stronger communal relations with peers and increased participation from learners and broader take up on the school of the grade 6 class’ ideas. The challenges of the reconceptualisation were the alienation of other grade 6 learners and teachers finding learners’ voice and increased agency more challenging to manage. Systematic work with space presents a range of insights into the social relations in classrooms that are often otherwise invisible. / MT2017

Chong, Kam Lin. / Thesis submitted in: December 2002. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 165-174). / Abstracts in English and Chinese. / ABSTRACT --- p.ii / ACKNOWLEDGEMENTS --- p.vii / TABLE OF CONTENTS --- p.viii / LIST OF ABBREVIATIONS --- p.xi / Chapter / Chapter 1. --- Introduction --- p.1 / Chapter 2. --- Literature review --- p.10 / Chapter 2.1 --- Prescribing patterns of antibiotics in hospital --- p.12 / Chapter 2.2 --- Worldwide problem of misuse of antibiotics --- p.15 / Chapter 2.2.1 --- Misuse of antibiotics in developed countries --- p.15 / Chapter 2.2.1.1 --- The United States of America --- p.16 / Chapter 2.2.1.2 --- The United Kingdom --- p.19 / Chapter 2.2.1.3 --- Australia --- p.23 / Chapter 2.2.1.4 --- Canada --- p.25 / Chapter 2.2.2 --- Misuse of antibiotics in African countries --- p.27 / Chapter 2.2.3 --- Misuse of antibiotics in Asian countries --- p.30 / Chapter 3. --- Objectives --- p.37 / Chapter 4. --- Methods --- p.39 / Chapter 4.1 --- Subjects --- p.39 / Chapter 4.2 --- Data --- p.41 / Chapter 4.3 --- Definition of terms --- p.44 / Chapter 4.3.1 --- Name of antibiotic --- p.44 / Chapter 4.3.2 --- Antibiotic course and antibiotic therapy --- p.44 / Chapter 4.3.3 --- Indications and types of antibiotic therapy --- p.47 / Chapter 4.3.4 --- Switch therapy --- p.50 / Chapter 4.3.5 --- Types of change --- p.50 / Chapter 4.3.6 --- Causes of change --- p.51 / Chapter 4.3.7 --- Clinical outcome of treatment --- p.53 / Chapter 4.3.8 --- Length of stay --- p.54 / Chapter 4.4 --- Determination of pattern of use --- p.54 / Chapter 4.5 --- Assessment of antibiotic therapies --- p.55 / Chapter 4.5.1 --- Assessment of indication and choice of agent --- p.59 / Chapter 4.5.2 --- Assessment of dosage --- p.60 / Chapter 4.5.3 --- Assessment of route of administration --- p.62 / Chapter 4.5.4 --- Assessment of duration of therapy --- p.62 / Chapter 4.6 --- Features of the guideline developed for the present study --- p.63 / Chapter 4.6.1 --- Ceftriaxone and cefotaxime are appropriate for treating serious infections --- p.72 / Chapter 4.6.2 --- Cefuroxime is not a first line agent --- p.72 / Chapter 4.6.3 --- Regimen for Helicobacter pylori eradication --- p.73 / Chapter 4.7 --- Statistical analysis --- p.73 / Chapter 5. --- Results --- p.74 / Chapter 5.1 --- Antibiotic courses and patients --- p.74 / Chapter 5.1.1 --- Inclusion and exclusion of antibiotic courses --- p.74 / Chapter 5.1.2 --- Patient sex and age --- p.76 / Chapter 5.1.3 --- Chronic disease/past medical history --- p.76 / Chapter 5.1.4 --- Length of stay --- p.78 / Chapter 5.2 --- Pattern of use --- p.79 / Chapter 5.2.1 --- Indications and sites of infection --- p.79 / Chapter 5.2.2 --- Types of antibiotic therapy --- p.83 / Chapter 5.2.3 --- Antibiotics prescribed in initial therapy --- p.84 / Chapter 5.2.4 --- Number of antibiotics in initial therapy --- p.87 / Chapter 5.2.5 --- Prescribing pattern of antibiotics in initial therapy --- p.88 / Chapter 5.2.5.1 --- Prescribing pattern of antibiotics in empirical treatment of lower respiratory tract infections --- p.89 / Chapter 5.2.5.2 --- Prescribing pattern of antibiotics in empirical treatment of sepsis --- p.90 / Chapter 5.2.6 --- Types of change --- p.92 / Chapter 5.2.7 --- Causes of change --- p.92 / Chapter 5.2.8 --- The relationship between causes of change and types of change --- p.93 / Chapter 5.2.9 --- Antibiotics prescribed in switch therapy --- p.96 / Chapter 5.2.10 --- Number of antibiotics in switch therapy --- p.99 / Chapter 5.3 --- Appropriateness of antibiotic therapy --- p.100 / Chapter 5.3.1 --- Appropriateness of empirical therapies --- p.101 / Chapter 5.3.2 --- Appropriateness of directed therapies --- p.102 / Chapter 5.3.3 --- Appropriateness of prophylactic therapies --- p.103 / Chapter 5.3.4 --- Appropriateness of unclassified therapies --- p.104 / Chapter 5.4 --- Clinical outcomes of treatment --- p.105 / Chapter 6. --- Discussion --- p.106 / Chapter 6.1 --- Limitations --- p.106 / Chapter 6.2 --- Method --- p.110 / Chapter 6.2.1 --- Symptom improved and not responded --- p.110 / Chapter 6.2.2 --- Grand round --- p.111 / Chapter 6.2.3 --- Susceptibility test result --- p.111 / Chapter 6.3 --- Results --- p.112 / Chapter 6.3.1 --- Patients --- p.112 / Chapter 6.3.2 --- Pattern of use --- p.113 / Chapter 6.3.2.1 --- Types of therapy --- p.113 / Chapter 6.3.2.2 --- Site of infection --- p.113 / Chapter 6.3.2.3 --- Prescribing pattern of antibiotics in initial therapy --- p.114 / Chapter 6.3.2.4 --- Relationship between types and causes of change --- p.115 / Chapter 6.3.3 --- Appropriateness of antibiotic therapies --- p.117 / Chapter 6.3.3.1 --- Misuse of empirical therapy --- p.118 / INAPPROPRIATE USE OF ANTIBIOTICS IN LOWER RESPIRATORY TRACT INFECTION --- p.118 / INAPPROPRIATE USE OF ANTIBIOTICS IN SEPSIS --- p.120 / MISUSE OF CEFUROXIME --- p.122 / MISUSE OF THIRD GENERATION CEPHALOSPORIN --- p.127 / Chapter 6.3.3.2 --- Appropriate use of directed therapy --- p.129 / Chapter 6.3.3.3 --- Appropriate use of prophylactic therapy --- p.130 / Chapter 6.3.3.4 --- Excessive use of unclassified therapy --- p.131 / Chapter 6.3.4 --- Clinical outcome of treatment --- p.133 / Chapter 6.4 --- Conclusion --- p.134 / Chapter 7. --- Summary --- p.136 / Chapter 8. --- Recommendations --- p.140 / APPENDICES --- p.143 / Chapter 1. --- Usual adult daily dose range of antibiotics --- p.144 / Chapter 2. --- Assessment of indications and choices of agent of initial therapies in an audit of 324 antibiotic courses in a medical ward --- p.146 / Chapter 3. --- Culture test results in an audit of use of antibiotics in a medical ward --- p.160 / Chapter 4. --- Generic to trade name conversion of antibiotics --- p.163 / REFERENCES --- p.165

by Tsang Wai Nam. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (leaves 163-176). / ACKNOWLEDGMENTS --- p.i / ABSTRACT --- p.ii / Chapter CHAPTER 1: --- INTRODUCTION --- p.1 / Chapter CHAPTER 2: --- LITERATURE REVIEW --- p.5 / Chapter 2.1 --- ACL ANATOMY AND BIOMECHANICS --- p.5 / Chapter 2.1.1 --- Microscopic anatomy --- p.5 / Chapter 2.1.2 --- Gross anatomy --- p.6 / Chapter 2.1.3 --- Functions of ACL --- p.9 / Chapter 2.1.4 --- Kinematics of ACL --- p.10 / Chapter 2.1.5 --- Biomechanics of ACL --- p.12 / Chapter 2.2 --- ACL INJURY --- p.16 / Chapter 2.2.1 --- Epidemiology --- p.16 / Chapter 2.2.2 --- Mechanism of injury --- p.16 / Chapter 2.2.3 --- Clinical signs and symptoms of ACL injury --- p.17 / Chapter 2.2.4 --- Consequences after ACL injury --- p.18 / Chapter 2.3 --- SURGICAL TREATMENT OF ACL INJURY --- p.19 / Chapter 2.3.1 --- ACL reconstruction --- p.19 / Chapter 2.3.2 --- Healing of the graft --- p.20 / Chapter 2.4 --- REHABILITATION --- p.22 / Chapter 2.4.1 --- Rehabilitation of the ACL-deficient knee --- p.22 / Chapter 2.4.2 --- Rehabilitation of the ACL-reconstructed knee --- p.22 / Chapter 2.5 --- KINEMATIC MEASUREMENT --- p.33 / Chapter 2.5.1 --- Reasons for kinematic measurement --- p.33 / Chapter 2.5.2 --- Measurement methods --- p.33 / Chapter 2.6 --- ROENTGEN STEREOPHOTOGRAMMETRIC ANALYSIS (RSA) --- p.45 / Chapter 2.6.1 --- Plain radiographic method --- p.45 / Chapter 2.6.2 --- RSA --- p.45 / Chapter 2.6.3 --- Convergent versus Biplane x-ray methods --- p.46 / Chapter 2.7 --- VIDEO STEREOGRAPHY --- p.49 / Chapter 2.7.1 --- Kinematic studies --- p.49 / Chapter 2.7.2 --- Strain studies --- p.52 / Chapter 2.7.3 --- Errors from video camera measurement --- p.53 / Chapter 2.8 --- EXTERNAL MARKERS --- p.54 / Chapter 2.8.1 --- Skin markers --- p.55 / Chapter 2.8.2 --- Plate markers --- p.55 / Chapter 2.8.3 --- Skeletal markers --- p.56 / Chapter 2.8.4 --- Virtual markers --- p.58 / Chapter 2.9 --- ARTHROSCOPY --- p.61 / Chapter 2.10 --- RATIONALE AND SCOPE OF THE PROJECT --- p.63 / Chapter CHAPTER 3: --- INSTRUMENTATION --- p.69 / Chapter 3.1 --- RSA --- p.69 / Chapter 3.1.1 --- Biplane x-ray apparatus --- p.69 / Chapter 3.1.2 --- Internal markers and implant instrument --- p.70 / Chapter 3.1.3 --- Plexi-glass calibration box --- p.71 / Chapter 3.1.4 --- Transparent digitizer and computer --- p.72 / Chapter 3.1.5 --- Accuracy of the RSA --- p.74 / Chapter 3.2 --- MOUNTING JIGS AND FORCE APPLICATION SYSTEM --- p.74 / Chapter 3.3 --- VIDEO STEREOGRAPHY --- p.76 / Chapter 3.3.1 --- PEAK motion measurement system --- p.76 / Chapter 3.3.2 --- External markers --- p.79 / Chapter 3.3.3 --- Calibration frame --- p.81 / Chapter 3.4 --- ARTHROSCOPY INSTRUMENT --- p.82 / Chapter CHAPTER 4: --- METHODOLOGY --- p.84 / Chapter 4.1 --- EXPERIMENTAL SET-UP --- p.84 / Chapter 4.1.1 --- Specimens --- p.84 / Chapter 4.1.2 --- Implantation of tantalum beads into the ACL --- p.84 / Chapter 4.1.3 --- Set-up of the video motion measurement system and x-ray --- p.86 / Chapter 4.1.4 --- Mounting of cadaveric knees --- p.88 / Chapter 4.1.5 --- Mounting of external markers --- p.88 / Chapter 4.1.6 --- Pre-conditioning --- p.89 / Chapter 4.1.7 --- Application of force --- p.89 / Chapter 4.1.8 --- X-ray and video camera capturing --- p.91 / Chapter 4.1.9 --- The conditions of ACL --- p.91 / Chapter 4.1.10 --- Digitization of x-ray images --- p.91 / Chapter 4.1.11 --- Digitization of video images --- p.92 / Chapter 4.2 --- TESTING OF INSTRUMENTATION --- p.93 / Chapter 4.2.1 --- Accuracy of the PEAK motion measurement system --- p.93 / Chapter 4.2.2 --- Reliability of the experimental set-up and migration of tantalum beads --- p.94 / Chapter 4.2.3 --- "Comparison of the x, y, and z coordinates of external markers imaged by RSA and video stereography" --- p.96 / Chapter 4.3 --- PREDICTION OF LENGTH CHANGE OF ACL --- p.96 / Chapter 4.4 --- BEHAVIOR OF ACL --- p.97 / Chapter CHAPTER 5: --- DATA ANALYSIS AND STATISTICAL METHODS --- p.98 / Chapter 5.1 --- MATHEMATICAL CALCULATION --- p.98 / Chapter 5.1.1 --- RSA calculation --- p.98 / Chapter 5.1.2 --- Determination of the length changes of ACL using RSA and video stereography --- p.102 / Chapter 5.1.3 --- Calculation of center of the external markers --- p.111 / Chapter 5.2 --- ACCURACY OF THE PEAK MOTION MEASUREMENT SYSTEM --- p.113 / Chapter 5.3 --- STATISTICAL METHODS --- p.114 / Chapter 5.3.1 --- Reliability of the experimental set-up and migration of tantalum beads / Chapter 5.3.2 --- "Comparison of the x, y, and z coordinates of external markers imaged by RSA and video stereography" --- p.114 / Chapter 5.3.3 --- Prediction of length change of ACL --- p.115 / Chapter 5.3.4 --- Behavior of ACL --- p.115 / Chapter CHAPTER 6: --- RESULT --- p.116 / Chapter 6.1 --- ACCURACY OF THE PEAK MOTION MEASUREMENT SYSTEM --- p.116 / Chapter 6.2 --- RELIABILITY OF THE EXPERIMENTAL SET-UP --- p.117 / Chapter 6.3 --- MIGRATION OF TANTALUM BEADS --- p.120 / Chapter 6.4 --- "COMPARISON OF THE X，Y, AND Z COORDINATES OF EXTERNAL MARKERS IMAGED BY RSA AND VIDEO STEREOGRAPHY" --- p.123 / Chapter 6.5 --- PREDICTION OF LENGTH CHANGE OF ACL --- p.125 / Chapter 6.6 --- BEHAVIOR OF ACL --- p.129 / Chapter 6.6.1 --- Comparison of length changes in different conditions of ACL --- p.130 / Chapter 6.6.2 --- Comparison of length changes of AM and PL bundles of ACL --- p.131 / Chapter CHAPTER 7: --- DISCUSSION --- p.132 / Chapter 7.1 --- LIMITATIONS --- p.132 / Chapter 7.2 --- VIDEO STEREOGRAPHY --- p.135 / Chapter 7.2.1 --- Accuracy of the PEAK motion measurement system --- p.135 / Chapter 7.2.2 --- Prediction of length change of ACL by video stereography --- p.138 / Chapter 7.2.3 --- External markers --- p.144 / Chapter 7.3 --- BEHAVIOR OF ACL --- p.145 / Chapter 7.3.1 --- Effect of sectioning on the behavior of ACL as measured by RSA --- p.146 / Chapter 7.3.2 --- The behavior of AM and PL bundles as measured by RSA --- p.147 / Chapter 7.3.3 --- Comparison of the RSA and video stereography systems in the study of the behavior of ACL --- p.149 / Chapter 7.4 --- SOURCES OF ERROR --- p.151 / Chapter 7.5 --- CLINICAL APPLICATIONS --- p.153 / Chapter 7.5.1 --- Suggestions to the logistic of the video stereography in in vivo --- p.153 / Chapter 7.5.2 --- Suggested clinical applications --- p.156 / Chapter 7.6 --- FUTURE STUDY --- p.158 / Chapter 7.7 --- CONCLUSIONS --- p.162 / REFERENCES --- p.163 / APPENDICES --- p.177 / Chapter 1. --- Mathematical derivations for RSA system --- p.177 / Chapter 2. --- Computer program for the RSA system: BP41 EXE --- p.186 / Chapter 3. --- Computer program to find the center of the external markers: FINDCG.EXE --- p.191 / Chapter 4. --- Data and statistical results --- p.196

Includes bibliographical references (leaves 290-309) Investigates aspects of the intake and utilization of barley grain and grain legume supplements by sheep fed low quality pasture hay and when grazing mature summer pastures.

Typescript (photocopy) Includes bibliographical references (leaves 223-249) Investigates the relationship between feed conversion efficiency and physiological variables among several lines, generations and breeds of hen fed ad libitum or on restricted amounts of feed; and, of the consequences to egg shell quality of restriction of food supplied to laying hens.

No description available.

There is a strong push in public health for multi-faceted partnerships to develop practice-relevant evidence that effectively address complex risk factors like tobacco use. Consequently, new partnership structures that cross-cut different social groups are emerging to harness their distinct knowledge and generate actionable breakthroughs. Little is known about these structures, particularly informal ones that hinge on voluntary group membership like Communities of Practice (CoPs). Specifically, little is known about the factors/processes that enable people representing different social groups to translate their knowledge across group boundaries and co-create knowledge that informs action in these informal structures. Calls to develop/test theories, frameworks, and models are made to enlighten these gaps. This study responded to these calls by developing and testing a conceptual framework. The framework asserts that a shared identity, member identification / sense of belonging, social capital and psychological safety contribute to diverse people cohering into a collective, which was deemed important to enable knowledge to translate across group boundaries. The study examined how each factor influenced and inter-related to influence the use of CoP-related knowledge and its different types (with an emphasis on conceptual and instrumental uses). The study also examined what factors contributed to or detracted from these relationships in the context of the Program Training and Consultation Centre’s tobacco control specific Learning through Evidence and Action Reflection Network (LEARN) Community of Practice (CoP) project. Following a pragmatist orientation, a two-phased quant-QUAL sequential, explanatory mixed-methods embedded case study design was employed. The LEARN CoP project formed the case study and two CoPs that comprised that project formed the embedded units. Phase I of the study involved a quantitative survey that was completed by 35 of 58 eligible LEARN CoP members. The Phase II dominant qualitative study involved ~90 minute audio-recorded telephone interviews of 14 LEARN CoP members (seven per embedded unit) who comprised a subset of Phase I survey respondents (nested sampling approach). CoP documents (meeting minutes, audio-recorded meetings, Community Charters and Learning Agendas, WebEx™ discussion posts) served as supplementary data sources. Phase I quantitative analyses examined whether each factor of interest predicted knowledge use using simple and multiple linear regression, tested an analytic model that proposed shared identity led to knowledge use via the mediators member identification, social capital and psychological safety using Baron & Kenny’s (1986) mediation approach and Goodman’s Test (1960) for confirmation. As a prelude to the Phase II qualitative study, descriptive statistics, t-tests and ANOVA were conducted to discern how the LEARN CoP and more specifically each of its embedded units (CoP A and CoP B) were developing with respect to the factors of interest and what differences existed between the two communities. Phase I findings loosely informed the focus of the Phase II qualitative study and data were coded and analysed using open, axial and selective coding procedures (Strauss & Corbin, 1990). Phase I and Phase II data were compared and contrasted in the discussion, with greater emphasis placed on the qualitative findings. Overall findings revealed that in the LEARN CoP case, each factor in the conceptual framework influenced how members used knowledge gained in the CoP. These factors also inter-related in ways that helped diverse members to cohere in ways that influenced knowledge use. Shared identity, member identification / sense of belonging and psychological safety were related to conceptual types of knowledge use (increased awareness, learning as a result of CoP knowledge). Social capital was the only factor that was related to both conceptual and instrumental types of CoP knowledge use (e.g., knowledge gained from the CoP was used to inform decision making or applied in some fashion in practice). However, member identification / sense of belonging emerged as an important theme that motivated members to interact and build social capital which in turn led to instrumental types of knowledge use. A superordinate identity (shaped by a common and actionable purpose) helped members to jel together despite representing different social groups by serving as an anchor point for member identification / sense of belonging. The CoP’s ‘alignment’ with the philosophies, culture and priorities of important entity’s that shaped the CoP’s work (e.g., government and the organizations that members represented) also influenced the use of CoP knowledge. Other factors including relevant knowledge, leadership (including member roles), and a variety of mechanisms that enabled interaction (i.e., in-person meetings, WebEx, teleconferences, structured time for practice sharing, working groups) contributed to or detracted from the relationships found in the study. Solving complex problems like tobacco-related chronic diseases necessitates building multi-faceted partnership structures that connect different configurations of an existing or desired system and their respective knowledge. This is not an easy task because it requires bringing together people representing potentially different social identities that possess their own ways of thinking and doing, which can limit knowledge use. This study sought to understand how factors that help diverse people to cohere into a collective enhance knowledge use. The study highlights the need to understand identity-based issues at play when people from different social groups are brought together in partnership structures like the formally instituted, voluntary CoP examined. Cultivating a shared identity and sense of belonging can bridge silos and motivate people to engage in behaviours that build rich pools of social capital. These factors together can enhance the co-creation and use of evidence and collective action that can save lives.