Background: People with intellectual disabilities (ID) remain at high risk of developing type 2 diabetes (T2D) due to lifestyle associated risk factors such poor diets and low physical activity levels. Interventions have been adapted which target ongoing T2D self-management. However, there are no adapted programmes which prevent T2D through reducing risk factors. The present research project addresses this gap through a three-phase study on the existing literature, theoretical basis, and process evaluation of a T2D prevention programme. Methods: Phase 1: The literature reviews identified that the support needs of people with ID with T2D are currently not being met. Appropriate training needs to be delivered so that people with ID can self-manage or reduce the risk of T2D effectively. Given the early onset of T2D in people with ID and their often shorter lifespan, there is rationale for a preventative agenda in T2D education. Four potential mainstream intervention programmes were identified, and the self-efficacy model was found to be the most prevalent successfully implemented theoretical model. Phase 2: Nine sub-themes were identified following analysis of the data: 1) "Mastery through knowledge"; 2) "Mastery through tools and strategies"; 3) "Mastery through autonomy"; 4) "Influence of social setting"; 5) "Positive social comparisons"; 6) "Positive and negative self-statements"; 7) "Feedback from Caregivers"; 8) "Adjustment experiences"; 9) "Symptom awareness". These were mapped onto Bandura's (1977) Four Sources of efficacy enhancement model and were consistentwith its proposed mechanisms. The Four Sources model serves as a useful mode of enquiry for exploring people with ID's experiences and perceptions of self-managing diabetes. It also confirms the appropriateness of ssself-efficacy as a potential intervention component for this population. However, additional support may be required for people with ID to reflect meaningfully on their experiences and thus have a sense of self-efficacy. Phase3: 96% of invited students agreed to participate. The Walking Away programme was positively received, and some short-term impact was described, yet there were limitations to accessibility of the program due to the complexity of the language and materials. Suggestions for further adaptations regarding materials and content were provided, and there was perceived scope for a long-term implementation built into college curriculum. Results: Phase One: The literature reviews identified that the support needs of people with ID with T2D are currently not being met. Appropriate training needs to be delivered so that people with ID can self-manage or reduce the risk of T2D effectively. Given the early onset of T2D in people with ID and their often shorter lifespan, there is rationale for a preventative agenda in T2D education. Four potential mainstream intervention programmes were identified, and the self-efficacy model was found to be the most prevalent successfully implemented theoretical model. Phase Two: Nine sub-themes were identified following analysis of the data: 1) "Mastery through knowledge"; 2) "Mastery through tools and strategies"; 3) "Masterythrough autonomy"; 4) "Influence of social setting"; 5) "Positive social comparisons"; 6) "Positive and negative self-statements"; 7) "Feedback from Caregivers"; 8) "Adjustment experiences"; 9) "Symptom awareness". These were mapped onto Bandura's (1977) Four Sources of efficacy enhancement model and were consistent with its proposed mechanisms. The Four Sources model serves as a useful mode of enquiry for exploring people with ID's experiences and perceptions of self-managing diabetes. It also confirms the appropriateness of self-efficacy as a potential intervention component for this population. However, additional support may be required for people with ID to reflect meaningfully on their experiences and thus have a sense of self-efficacy. Phase Three: 96% of invited students agreed to participate. The Walking Away programme was positively received, and some short-term impact was described, yet there were limitations to accessibility of the program due to the complexity of the language and materials. Suggestions for further adaptations regarding materials and content were provided, and there was perceived scope for a long-term implementation built into college curriculum. Phase Three: 96% of invited students agreed to participate. The Walking Away programme was positively received, and some short-term impact was described, yet there were limitations to accessibility of the program due to the complexity of the language and materials. Suggestions for further adaptations regarding materials and content were provided, and there was perceived scope for a long-term implementation built into college curriculum. Conclusions: The findings provide basis for a further trial incorporating the suggested adaptations. A self-efficacy informed prevention programme was highly acceptability to students and teaching staff. Further education colleges provided a supportive setting and yielded a rich sample.

This exploratory research is based on an objectivist epistemology with a positivist theoretical perspective that deployed concurrent mixed methods (MMR) design through a quantitative administered survey alongside an in-depth qualitative analysis through interviews exploring the perspectives of leaders on EHS leadership and governance. The research literature review focused on EHS leadership, corporate governance and strongly related topics. This MMR research employed both an expert panel-validated survey and a semi-structured interview protocol which explored 9 themes which emerged from the literature review including EHS/Safety Leadership; Risk Management; Influence and Accountability. Due to pragmatics relating to the number of leaders accessed (N=30) the statistical analysis is limited to descriptive type statistics. Almost all respondents supported the monitoring role of the Board of Directors (BoD), but disagreed that the BoD should play an active role in risk management. Comparisons are drawn between the Oil and Gas and non-Oil and Gas organizations with interesting results especially in matters relating to risk management. Structured thematic content analysis yields that Safety Culture; Leadership; Influence and Accountability were the three leading themes accounting for just over 50% of the responses analysed. Many sub-themes have also emerged and are discussed. A Model of EHS Leadership and Governance was created and is presented which positions themes and factors that influence monitoring of EHS performance and ultimately risk management. The research can be considered as a unique contribution as a relatively small body of currently published work in this subject area, both globally and more so in the GCC.

In recent years, environmental authorities in Sweden are reporting about high content of antimony in waste water that is discharging from polyester textile dyeing industries. It is known from available scientific publications that, antimony and its compound is harmful for both human and environment. While dyeing of polyester textiles have a commercial importance and in regards to the environmental issues, the industries are looking for the factors those results in high concentrations of antimony in their dyeing waste water. Dyeing of polyester textile requires high-temperature application in association with dyes and process aid chemicals. The waste water that is being produced after dyeing contains a complex mixture of chemicals, where antimony is one of that mixture. To comply with the industries interest, this master thesis work involved the exhaust dyeing of polyester fabrics/yarns and analyzing the dyeing waste water, to determine the amount of antimony diffusion. According to literature studies, the antimony compounds are widely used as catalyst for polyethylene terepthalate (PET) polymerization and hence antimony is present in polyester textiles. The entire experimental work intended to understand the variation of antimony concentration and the factors that are causing high antimony diffusion from polyester textiles during dyeing. The materials which are polyester yarn and fabrics were collected from 3 different dyeing industries of Sweden and the materials were in 9 different types. From material analysis (before dyeing) it has been found there were variations in antimony concentration among the materials. The process parameters that have varied during exhaust dyeing were dyeing temperature, cycle time and process aid chemical (leveling agent) adding options. With the variation in process parameters, the dyeing has performed and the dyeing waste waters have analyzed through inductively coupled plasma sector field mass spectroscopy (ICP-SFMS). The expectations from the experiments were, under specific dyeing process and with same antimony concentration, the materials varying in filament/fiber diameter; big diameter filament/fiber will diffuse less antimony compared to the small diameter filaments. Also, process-wise the antimony diffusion ratio among the materials will accordingly follow the Fick’s diffusion model. To face the environmental issues with sustainability, entire thesis work could provide concentrated knowledge’s with literature evidence for the dyeing industries. As literature study indicates, the dyeing temperature, temperature ramp set and cycle time play major factor while comparing for the expected diffusion ratio. As a gentle process parameter, comparatively lower temperature and cycle time results lower antimony diffusion. The use of levelling agent could be reduced to a level with the appropriateness while added for dyeing. Also, a strong follow-up is needed in the supply chain, for lowering the initial antimony content in the materials. Overall, the findings of this thesis work also keep an importance to do further research on the polyester textile, as during the experiments most of the materials haven’t reacted accordingly as they were expected to react with the Fick’s diffusion model.

This exploratory research is based on an objectivist epistemology with a positivist theoretical perspective that deployed concurrent mixed methods (MMR) design through a quantitative administered survey alongside an in-depth qualitative analysis through interviews exploring the perspectives of leaders on EHS leadership and governance. The research literature review focused on EHS leadership, corporate governance and strongly related topics. This MMR research employed both an expert panel-validated survey and a semi-structured interview protocol which explored 9 themes which emerged from the literature review including EHS/Safety Leadership; Risk Management; Influence and Accountability. Due to pragmatics relating to the number of leaders accessed (N=30) the statistical analysis is limited to descriptive type statistics. Almost all respondents supported the monitoring role of the Board of Directors (BoD), but disagreed that the BoD should play an active role in risk management. Comparisons are drawn between the Oil and Gas and non-Oil and Gas organizations with interesting results especially in matters relating to risk management. Structured thematic content analysis yields that Safety Culture; Leadership; Influence and Accountability were the three leading themes accounting for just over 50% of the responses analysed. Many sub-themes have also emerged and are discussed. A Model of EHS Leadership and Governance was created and is presented which positions themes and factors that influence monitoring of EHS performance and ultimately risk management. The research can be considered as a unique contribution as a relatively small body of currently published work in this subject area, both globally and more so in the GCC.

Head stabilisation during gait related tasks is thought to be fundamental to whole body stability, but this has received little attention in the older population. There is a need to examine any age related changes in neuromechanical mechanisms underpinning head stabilisation that may challenge the control of head stability, and consequently whole body stability. The present Thesis examined the mechanisms contributing to head stabilisation, and whole body stability during two gait tasks, steady state gait and gait initiation in young and older females, with the overall aim of contributing to negating fall risk. Four studies were designed to examine a) head position and walking speed on gait stability during steady state gait; b) neuromechanical mechanisms underpinning head stabilisation during gait initiation; c) head position on whole body stability during gait initiation; and d) head stabilisation during gait initiation at different speeds. Results showed that a) gait stability, was unaffected by head position and different walking speeds during steady state gait, b) decreased head stability in older individuals during gait initiation can be attributed to a deterioration of the neuromechanical mechanisms relating to head stability, c) free head movement during gait initiation does not affect head stabilisation or whole body stability but it does affect gait parameters, while d) initiating gait at faster than comfortable speeds compromises head stabilisation and reduces whole body stability in older individuals. Collectively, these results demonstrate that older individuals adopt an increased head flexion position when walking, while impaired head stability can be attributed to deterioration of the function of their neuromechanical mechanisms compared to their younger counterparts during gait tasks at comfortable speeds. These findings provide an understanding of the effect head stabilisation can have on older adults’ gait and on their fall risk during gait and gait initiation.

Eye movements are used day-to-day to acquire visual information. Vision is also used for postural control. There are growing indications eye movements can affect postural control. However, this has not been investigated in older adults, which is surprising given the high incidence of falls in older populations. The present thesis aims to address this. The first experimental chapter explores the effects of eye movements on balance during standing in young and older adults. The findings show decreased stability during smooth pursuits, whereas saccades maintained stability to that when fixating a static target. The older adults matched the younger groups performance throughout. The second experimental chapter explores the effects of smooth pursuits and saccades on balance during locomotion in young and older adults. Smooth pursuits were shown to decrease stability, whilst saccades maintained stability compared to fixating a static target. The effects of the eye movements were similar in the older adults. However, the elders exhibited lower baseline stability. The third experimental chapter explores the effects of tracking a real-world stimulus (another person known as `pedestrian') on balance control during locomotion. The pedestrian could be standing still or walking. Fixating the stationary and the walking pedestrian decreased stability similarly when compared to free gaze when the pedestrian was not present. To determine whether these results were transferable to natural gaze rather than instructed gaze, the fourth experimental chapter explores free gaze patterns in a similar real-world environment. Both the young and older adults typically fixated the pedestrian when he was standing still and walking, but began to ignore him once he had walked away from their direction heading. Therefore, experiment 3 behaviour was transferable to natural gaze patterns. The older adults also adopted a more cautious approach by fixating regions on the ground initially, and for longer, before looking to their direction heading.

Ventilation on demand (VOD) concept has earned significant worldwide attention by several mining companies in recent years. It is a concept where airflow is provided only to areas that require ventilation. The implementation of the concept has resulted in significant savings in annual energy consumption and cost for several companies globally. The research presented in this thesis sought to present the VOD system as an alternative solution and strategy to improve the ventilation system of Konsuln mine. The system is expected to cope with a planned increase in production rate and meet requirements in the new Swedish Occupational Health & Safety (OH&S) regulations, Arbetsmiljöverkets förtfattningssamling (AFS) 2018:1, which is based on the EU directive 2017/164 where Threshold Limit Value (TLV) for gases have been significantly reduced and provide safe work environment for workers in the mine. The thesis work started with planning and execution of a PQ (Pressure – Quantity) survey to calibrate the existing ventilation model of Konsuln mine. This was to ensure that the model is reasonably accurate to give reliable simulation predictions of the performance of Konsuln ventilation system in its current state and for the future. The good correlation between the modelled and underground measured values validated the model for further ventilation planning. The study further investigated and analyzed the current and future ventilation demand of LKAB test mine, Konsuln, to design a VOD system for its operations.The work outlined three main VOD design scenarios I, II, and III based on the proposed production plan, schedule, and the mining process that present the underground working conditions on the three main levels (436, 486 and 536) of Konsuln mine. Diesel, battery-powered, heat, and blast simulations were carried out for all the scenarios in the calibrated ventilation model using VentSim Design simulation software. The model was again used to estimate the annual ventilation power cost for the VOD scenarios to highlight the benefit and cost savings advantage under the VOD design system to deliver enough airflow quantity compared to the conventional system of ventilation. Simulation results showed that about 15.6% – 49.1% and 76.4% - 86.7% of significant cost savings will be achieved for diesel and battery-powered machineries respectively, while still supplying the needed amount of air to working areas to keep contaminants below their Threshold Limit Value -Time Weighted Average (TLV-TWA) and provide a good working environment. For additional benefits and savings of the Ventilation on Demand (VOD) system implementation, some considerations for equipment, personnel positioning and identification, monitoring system, and stations have also been discussed in this work.  These include; (i) Utilization of LKAB’s database system, Giron, in addition to mounting tags with unique IDs on machineries, to track the route of LHDs and trucks to deal with the challenge of airflow supply shortfall associated with auxiliary fans adjustment to affect target locations. (ii) Installation of temperature sensors, flow meters, gases and Diesel Particulate Matter (DPM) monitoring systems at specific, appropriate, and optimal locations in the mine for efficient implementation of the VOD system strategy. The heat simulations for both diesel and battery-powered machineries were carried out for the month of July when the highest temperatures in Kiruna are often recorded for the summer. They predicted the highest temperatures in working areas to be well below the limit used in Australia, 28°C Wet Bulb (WB). Four scenarios A, B, C and D were also considered for blast clearance time simulation using both the ramp and exhaust shaft. The blast simulation results indicated that the time to dilute and clear blast fumes through the exhaust shaft saves some clearance time compared to exhaustion through the ramp, although the shaft exhaustion will require additional financial commitment to purchase and install exhaust fans on each of the three main levels of the mine. Nevertheless, major ventilation work and practices such as removal of regulator in front of primary fans, additional radon measurement, and good auxiliary ventilation practices have been recommended to improve and actualize the benefits outlined in this work.