Instability of stratified two-fluid flow in a Venturi flow meter

In this dissertation the subject of stability of stratified two-fluid flows in an inclined channel is examined and modelled using classical fluid dynamics. The problem is motivated by the consideration of oil-water flows through a Venturi flow meter in the oil industry. A background to both inviscid and viscous instability theories are given. An inviscid approach to the problem is undertaken and conditions for the onset of instability in the flow are derived. These conditions involve density contrast, Richardson number and critical slip velocity. Furthermore it is shown that a stable flow in an inclined channel may be made unstable by a small enough constriction

A Journey Through Summer

[Extract] Ron McBurnie has created some quite unforgettable landscapes for his latest exhibition at Gallery@28. Entitled 'A Journey through Summer', the show features paintings and drawings made throughout 2009 and 2010 when McBurnie spent a residency in Alayrac, near Toulouse in southern France and another spent in New Zealand

Alien Registration- Mcburnie, Harris (Presque Isle, Aroostook County)

https://digitalmaine.com/alien_docs/33388/thumbnail.jp

Alien Registration- Mcburnie, George (Fort Fairfield, Aroostook County)

https://digitalmaine.com/alien_docs/36519/thumbnail.jp

Methods used by health ombudsman in their system improvement role: A comparison of two international health ombudsman in their system improvement role and the response of Scottish health boards to the system improvement activities of the SPSO

Academics and ombudsman claim that a key role for ombudsman is to contribute to the improvement of the system over which they have oversight. However, there is limited research to support this claim and, much of what exists, is equivocal. This research examines the thesis that health ombudsman make a significant contribution to the improvement of the healthcare system as a result of the roles and activities that they undertake together with the way that they work with bodies in jurisdiction. In conducting this research, an international comparative case study was undertaken, using the Office of the Health Ombudsman, Queensland (OHOQ) and the Scottish Public Services Ombudsman (SPSO) as cases. In addition, three Scottish health boards participated in the research. The OHOQ was found not to be an ombudsman but to be a health complaint entity which principally focused on the prosecution of health professionals that it considers have conducted serious professional misconduct. The SPSO is an ombudsman, which principally tries to contribute to system improvement through compliance from health boards with recommendations arising from upheld complaints. In its approach to complaint investigations, the SPSO adopts the positions of an accountability institutional logic and coercive model of administrative control. These positions adversely affect the relationship between the SPSO and health boards with health board participants complaining about the nature of the communication between themselves and the SPSO, the quality of the clinical advice relied upon by the SPSO in reaching its decisions, and the inability to challenge either the advice or the decision. Consequently, in many cases, compliance with SPSO recommendations was due to a fear of sanction rather than commitment. In implementing recommendations, health boards use a dominant informational mode of organisational learning. Together, these factors explain why learning is unsustained leading to repeated complaints about the same issue

Collisions: drawing in the digital age

This research outlines the reconfiguration of the creative act of drawing through physical practice as a response to mass culture. This practice takes place in the context of developing digital technologies, culminating in metadrawing. Metadrawing is defined as the integration of the post-digital collapse of media specificity in the visual arts. This research posits metadrawing as a descriptor for the paradigm shift between the physical act of drawing in pre-digital mass culture and the principles of drawing incorporated into digital technologies. Through this shift, drawing has become an artistic act that is no longer working to collapse media divisions, and now operates within and without these divisions, destabilised by digital technologies. This research examines drawing as a history of innovations and responses to shifts in technologies and their applications. Questions of genre, form and medium are subsequently downplayed for an interdisciplinary approach. High and low are no longer distinct, as the internet search engine is adopted into the artist's toolbox, alongside the digital camera and animation software. The many accessible and disposable images are integrated as raw matter, to fossick and sift through. Accompanying studio research operates within the interdisciplinary freedoms of the metadrawing. Approaches to quotation, appropriation, pastiche, irony, detachment and sincerity are explored through a rigorous drawing practice, resulting in a vast, multilayered body of work. This self-reflexive and intuitive practice incorporates numerous ciphers into its many suspended, but interrelated narratives. Beyond the physical level, the work operates on an intertextual level, moving between the metaphysics of genre and previously separated art forms to create a reconfigured history, unhampered by previous distinctions and boundaries of media and form. This research posits the act of drawing as a reaction to, or divergence from, the dominant techno-capitalist status quo, treating the tactile experiences of studio practice as subversive, transgressive, and erotic. This research explores the subjectivity and the subjective agency of the artist. Drawing is therefore defined as a process of unrepeatability, a process that, while no longer necessary for picture making, still forms a crucial and engaging tier of the visual arts. Drawing’s divergence from the commercialised intangibility of the digital has revitalized its practitioners, demanding a reconsideration of what is means to draw today. This tension is explored through the different methods of studio practice, on the level of the personal-biological, the erotic, and in terms of collision and materiality. Specific images are selected through criteria directly linked with the subjective agency of the artist, and reconfigured through artistic practice, creating a new imbrication of the raw image matter

Alien Registration- Mcburnie, George (Fort Fairfield, Aroostook County)

https://digitalmaine.com/alien_docs/36519/thumbnail.jp

Accuracy of a video odometry system for trains

Reliable Data Systems is developing a video-based odometry system that enables trains to measure velocities and distances travelled without the need for trackside infrastructure. A camera is fixed in the cab, taking images of the track immediately ahead, at rates in the range 25–50 frames per second. The images in successive frames are ‘unwarped’ to provide a plan view of the track and then matched, to produce an ‘optical flow’ that measures the distance travelled. The Study Group was asked to investigate ways of putting bounds on the accuracy of such a system, and to suggest any improvements that might be made. The work performed in the week followed three strands: (a) an understanding of how deviations from the camera’s calibrated position lead to errors in the train’s calculated position and velocity; (b) development of models for the train suspension, designed to place bounds on these deviations; and (c) the performance of the associated image processing algorithms