A lot of technologically relevant incompressible fluids exhibit a substantial variaton of viscosity with the pressure;a falling cylinder viscometer is frequently used for the measurements, determining the viscosity indirectly from the time it takes the sinker to fall a given distance. The relation between the sinker fall velocity and the fluid viscosity is, however, derived under the constant viscosity assumption. The objective of the present thesis is to perform a numerical simulation of the viscometric experiment, assuming an explicit form of the pressure-viscosity dependence and realistic parameter values and to quantitatively assess the difference in body motion to the Navier- Stokes model. The computational method proposed, handling both the nonlinear constitutive relation and the body motion, was tested on simple problems with analytical solutions. The semianalytical relation for the Navier-Stokes model, also re-derived here, is compared to the computational results.The validity of the assumptions used in the theoretical derivation, based on the results of the numerical simulation, is discussed regarding the geometry of the viscometer. Powered by TCPDF (www.tcpdf.org)

This thesis includes three manuscripts with an overarching objective to improve understanding of behavioural risk factors for falling in community-dwelling older adults. The first manuscript presented in Chapter two, presents a protocol for a scoping review. The objective of this scoping review was to highlight the current methods used to identify fall-related risk-taking behaviours in community-dwelling older adults, and to identify factors that might contribute to these behaviours. The second manuscript (Chapter three) presents the results of the scoping review written in the format for publication. The review identified older adults are generally aware of their own falls risk and engage in protective behaviours to reduce their risk of falling. Older adults engaged in risk-taking behaviours based on the potential benefits outweighing perceived risk of the behaviours. An individual’s abilities, self-perception, personal values, and the environment likely influence the perception of risk which contributes to risk-taking behaviours. The third manuscript (Chapter four) includes the analysis of clinical data from a community-based multi-component fall prevention program – the Building Balance Program. Individuals who participated in this six-week fall prevention program improved in balance ability, lower extremity muscle strength, mobility, and reduced fear of falling from baseline. Fear of falling (FoF) was the highest amongst the youngest participants despite having better physical function at the outset of the Program. This suggests that in addition to physical function, other factors, like psychological and social factors may be involved with FoF. / Thesis / Master of Health Sciences (MSc) / Falling is very common for older adults. Falling can lead to injuries and long-term side effects like fear of falling. Community-based exercise programs are a cost-effective way to help large groups of older adults reduce their risk of falling. Exercise programs can reduce older adults’ risk of falling by improving their balance and muscle strength. But exercise might not be enough to prevent falling in older adults. Falls can happen for various reasons, such as the activities or behaviours in which the individual participates. This thesis includes two studies presented in three papers aimed to better understand behavioural components which may be associated with falls. The results of this research suggest there is a psychological and social component involved with falling. The findings from this thesis highlight the importance of a holistic approach to and may help to inform the development of comprehensive interventions for fall prevention.

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The number of bicycles with infants is rapidly increasing due to the revision of the Road Traffic Law in 2009 and the spread of electrically power assisted bicycles in recent years. The users of electrically power assisted bicycles are mainly the elderly and the child-rearing generation, and bicycles that allow children to ride along are particularly effective tools for improving the efficiency and health of the child-rearing generation. However, the reckless riding of bicycles by parents is often overlooked because they have no other means of transportation. Therefore, we conducted a questionnaire survey of parents who transport their children to and from nursery schools by bicycle to understand the actual situation of bicycle use and the state of awareness of the rules.

Background: Fear of falling has significant adverse physical and psychological effects for the community-dwelling older adult. Objective: The purpose of this study was to assess fear of falling in community-dwelling older adults and explore participant perceptions of fear of falling assessments and interventions. Methods: A mixed methods case study was utilized to gain an in-depth understanding of older adults' perceptions. It consisted of quantitative data collection by objective measures and qualitative data collection by four individual in-depth interviews. A sample of four community-dwelling adults aged 65 years and older and living in Orlando, Florida, completed the study in their home environment. To combine quantitative and qualitative data for each participant, a case-specific analysis was used, resulting in narratives with a storytelling approach aiming to explore each participant independently. This was followed by a cross-case analysis to gain a more comprehensive understanding of the participants in relation to one another. Results: Four themes emerged: 1) Feedback from an objective measure is valuable; 2) Family experiences with fear of falling drive personal interventions; 3) Fundamental assessments for fear of falling are missing, and 4) Fluctuating definitions of "fear" contribute to difficulty in assessments and interventions. Conclusion: Clear perceptual themes developed to provide a comprehensive understanding of community-dwelling older adults' perceptions of fear of falling assessments and interventions. Future research is needed to determine how to best combine feedback-oriented assessments with established interventions, such as exercise. Standardization of a subjective measure for fear of falling to use in combination with objective measures is also needed. Keywords: assessment, intervention, fear of falling, older adults, community-dwelling, mixed methods

Table Mesa and Rattlesnake Fields are located on the Four Corners Platform, New Mexico, between the Paradox Basin to the north and San Juan Basin to the south. Diagenesis is extensive and includes partial dissolution and replacement of ooids, partial silicification of allochems and matrix, and filling of pore space with large, blocky calcite. Pore types include interparticle, intraparticle, and vuggy, with much porosity lost to late cementation. Porosity is greatest in cycles interpreted as regressive deposits with meteoric and burial diagenesis being most significant to porosity enhancement. Sea level and depositional history are shown to be significantly useful in predicting patterns of porosity development and destruction. These results are directly applicable to other economically important carbonate platforms.

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