705 research outputs found
'Mrs Thunderbolt': Setting the record straight on the life and times of Mary Ann Bugg
No full textThe life and times of the 19th century bushranger, Captain Thunderbolt (Frederick Wordsworth Ward), and his Aboriginal accomplice, Mary Ann Bugg, have long been the subject of speculation and confusion. Thunderbolt roamed across vast areas of New South Wales over seven years from 1863, eluding police, robbing travellers, stations, pubs, stores and mailmen, until his fatal capture by police at Uralla in the New England in May 1870. Mary Ann Bugg - the mother of Thunderbolt's children and for four years his 'chief lieutenant and right-hand man' is an important historical figure in her own right. She attracted strong contemporary interest, has been long remembered in history, fiction and folklore, and remains a subject of considerable historical debate. As with Thunderbolt himself, there has been dispute over key aspects of her story. As Jillian Oppenheimer noted in her 1992 biographical essay on 'Thunderbolt's Mary Ann', 'the myth and reality [have] become difficult to distinguish'. In this article we set the record straight, tracing the evolution and lineage of certain stories concerning the life and exploits of Mary Ann Bugg. Historians who lacked the technical research expertise and access to vital archival and genealogical data have generated much misinformation concerning her. With new evidence we can now test some conflicting assertions, providing clarity and certainty on a number of issues, while casting new light on aspects of her story. The principal points of contention that can now be settled are: Who was Mary Ann Bugg? Did she assist Captain Thunderbolt in his celebrated escape from Cockatoo Island? Was she the woman, 'Yellow Long', who died in the Hunter Valley in 1867? And if not, what became of her? In the process of answering these questions we reveal something of the genesis and propagation of myth and the convergence of fact and folklore in Australian history
Emerging Trends and Technologies in the Information Ecosystem, November 12, 2021
No full textPresentations: "Collaborative Online Whiteboards" by Dr. Kimberley Bugg; "UX in the Library Part 1" by Jordan MooreNovember’s inaugural Emerging Trends presentation provided tips on using technology for the creation and delivery of information. Dr. Kimberley Bugg introduced information about a collaborative online whiteboard, JamBoard. She answered questions like: What is a collaborative online whiteboard; What can a collaborative online whiteboard do; What are some examples of collaborative online whiteboards. A collaborative online whiteboard has the ability to: Import files, images, and GIFs; Create meeting efficiencies and opportunities to engage with others; Compatible with mobile devices; and Stimulate engagement and thinking in remote or distance learning environments. Jordan Moore provided an excerpt from her research on user experience (UX) and UX in Libraries. Although user experience (UX) is known today as an external-facing study of the interaction between an organization and its users, it began as an internal process. The initial goal of this kind of research (not yet termed “user experience”) was productivity. It was conceived as a study of workers’ interactions with means of production
Easterner, Vol. 35, No. 6, October 27, 1983
No full textThis issue of the Easterner contains articles about delaying the decision to expand the Pence Union Building (PUB), a talk by David Hinkley about Amnesty Internationa, male midwife David Bugg, a faculty artist series, 67 year-old student Betty Hillman, the football and volleyball seasons, and President Frederickson\u27s decision to withdraw from his application as President of Colorado State University.https://dc.ewu.edu/student_newspapers/1977/thumbnail.jp
Birmingham News sleeve BN0056443
No full textLegislature / Legislative committee meeting on [Guy] Hunt's education plan, in auditorium of Gordon Persons Building. / Also, Senate committee hearing on abortion bill, in State House, Star Wars Room, 1 p.m. (black and white) / Smith / Dr. Anita Buckley / Hubbert / S. S. DeGraf / W. Teague / Bennett / Representative Bugg [--] / Representative Smith (bald) / Dr. Jerry Olson / Sharron Allbright / George Martin / Abortion / Senator Albert Lipscomb / Dr. Judi Jehle / Senator Jim Smith chairman / David Smolin / [Samford] / Gerald Dial / [Work order included
A Method to Evaluate the Thermal Stress Management of Firefighters' Protective Clothing
No full textThe clothing worn by firefighters is essential in ensuring their safety. One of the tradeoffs that is made when designing apparel for firefighting is between its ability to protect the individual from high external heat and its ability to manage the thermal stress of the firefighter. More research is required to evaluate the thermal stress management of firefighters’ protective clothing. Some of the methods that have been used in the past to assess the thermal stress management of firefighters’ protective clothing include the sweating hot plate test, the sweating thermal manikin test and the dry manikin test. The planar geometry of the flat plate does not provide a very realistic representation of the human body while the complexity in the design and testing of the thermal manikin makes it more involved than the hot plate and expensive to obtain thermal resistance values for different fabric ensembles. So a testing method that could be simpler than the heated manikin test but provides a better representation of the human body than the hot plate test is required. This led to the development of the heated cylinder method presented in this thesis.
The method makes use of a heated cylinder in a wind tunnel. In the present research, a finite-height cylinder with a free end at the top causing a 3D airflow, and an infinitely long cylinder that spanned the height of the wind tunnel to create two-dimensional (2D) flow, were used. The fabric specimens were wrapped around the heated sections of these two cylinder models and the Nusselt number and thermal resistance values for the 2D and three-dimensional (3D) fabric-covered cylinders were obtained by subjecting the fabric and cylinder ensemble to airflow at different speeds in a wind tunnel and measuring the temperatures in the different layers of the ensemble. The results for the Nusselt number and thermal resistance data showed the impact of fabric permeability on the heat transfer from the surface of the fabric-covered cylinder and the thermal stress management of the fabric ensembles. This method was developed as a proof of concept; the results from this thesis research would be used in the development of a more realistic but relatively simple method to test the thermal stress management of firefighters’ protective clothing
AN EXPERIMENTAL INVESTIGATION OF ASPECT RATIO AND INCIDENCE ANGLE EFFECTS ON THE MEAN WAKE OF A SURFACE-MOUNTED FINITE-HEIGHT SQUARE PRISM
No full textThe flow around two-dimensional or infinite square prisms has been extensively studied. Fewer published studies have been carried out for the flow around surface-mounted finite-height square prisms, especially where the prism is oriented at a non-zero incidence angle. In the present study, the flow around surface-mounted finite-height square prisms of aspect ratios AR = 9, 7 and 5 was studied experimentally for a range of incidence angles, from α = 0° to 45°. The experiments were conducted in a low-speed wind tunnel at a Reynolds number of Re = 3.7×104 and with a boundary layer thickness, relative to the prism width, of δ/D = 1.5. Time-averaged velocity measurements in the wake were made using a seven-hole pressure probe. The wake measurements were carried out in two vertical planes, one parallel to the approach flow, and one normal to the approach flow. The data obtained were compared with previous results obtained for finite square prisms and finite cylinders.
For all aspect ratios, a symmetric counter-rotating pair of streamwise vortices representing the tip vortices is seen in the upper part of the wake at x/D = 10 for the orientation of α = 0°. Also, small streamwise vorticity concentrations are seen at the outer edge of the wake close to the ground plane representing the horseshoe vortices. The base vortex structures were nearly absent for the square prism. The maximum length of the recirculation zone for a finite square prism is much higher than that of a finite cylinder. With an increase in aspect ratio from AR = 5 to AR = 9, at α = 0°, the maximum length of the mean recirculation zone and the maximum downwash velocity increase. On the other hand, the width of the wake and the minimum value of the streamwise velocity component decrease with an increase in aspect ratio.
As α is varied from 0° to 45°, the mean wake shifts sideways in the direction of rotation of the prism, with the counterclockwise tip vortex moving higher above the ground plane and the clockwise tip vortex moving closer to the ground plane. The asymmetry in the wake is most pronounced at the critical incidence angle, which was between α = 10° and 15° in the experiments. The critical incidence angle corresponds to the smallest magnitude of the mean downwash velocity component, the largest value of the minimum mean streamwise velocity component, the maximum value of positive (counterclockwise) mean streamwise vorticity within the wake, and the minimum length of the mean recirculation zone. These properties of the wake were generally consistent for all three aspect ratios
Film thickness measurements in falling annular films
No full textLiquid films falling under the influence of gravity are widely encountered in a variety of industrial two-phase flow applications (distillation columns, nuclear reactor cores, etc.). In addition, the falling annular film represents a fundamental limiting case of the annular flow regime of two-phase gas-liquid flows. The literature on annular falling films is dominated by studies concerning the average film thickness. Information on more detailed characteristics of the film thickness variations and information on the velocity profile within the film and wall shear stress are much less common. The statistical description of the film thickness is complicated by the fact that practically all flows of interest occur in the turbulent regime. Due to the complex and unsteady nature of the turbulent annular falling film, no complete theories or models have yet been developed on the subject. Experimental studies are needed to gain insight into the basic mechanisms that govern this complex flow.The primary purpose of this thesis research was to characterise the film thickness of falling annular films at high and very high Reynolds numbers using non-intrusive imaging techniques. Another objective was to develop ray-tracing techniques to reduce optical distortion and obtain high-quality experimental data. Instantaneous film thickness measurements of falling annular films were extracted at five different Reynolds numbers in the range Re = 1000 ~ 6000 for the fully developed turbulent regime using an automated optical measurement technique. From visual observation of the images obtained it was found that waves were not axisymmetric, i.e., there was substantial azimuthal variation in film thickness. The turbulent waves appeared to be similar in appearance to very large breaking ocean waves driven by strong winds. The random nature of these falling annular films was subjected to statistical analysis.Statistical characteristics of film thickness were studied at Reynolds numbers in the range Re = 1000 ~ 6000. A correlation for dimensionless mean film thickness was obtained in the turbulent flow regime. The dimensionless mean film thickness obtained here was found to be in reasonable agreement with the other established experimental and theoretical studies. It was shown that the Reynolds number influences the statistical characteristics of film thickness such as standard deviation and coefficient of variation. The additional data obtained here shows that the standard deviation continues to increase in proportion to the mean film thickness in the turbulent regime. In other words, in the lower turbulent zones the films are thin and less wavy, whereas in the higher turbulent zones the films are thicker and extremely wavy in nature.The probability density distributions were also obtained. It was found that the measured probability density distributions were asymmetric. They all had a maximum peak and were skewed to the right hand side with a long tail that stretched to over six times the peak value. The maximum peak could be considered to represent the modal value of the film thickness or the substrate film thickness. The increase in skewness and the decrease in the height of the peak with liquid Reynolds number could be attributed to the presence of large disturbance waves which ride on the substrate film. This enhances the waviness of the film.A common problem in imaging flows in cylindrical tubes is the optical distortion caused by the wall curvature. To minimize this problem the cylindrical tube was surrounded by an optical correction box with flat walls filled with water. In addition, an advanced ray tracing model was employed to reduce optical distortion effects in the cylindrical tube. This technique increased the accuracy of the imaging technique and enabled quantitative measurements of film thickness to be made
Experiment 1: Reanalysis replication with manual response
No full textIn this experiment we aim to replicate our previous findings on the role of episodic processes in the LSPC effect. Thus, we study whether the LSPC effect can be explained by item-based response retrieval in the paradigm used by Bugg et al. (2022, Experiment 1), but this time using manual response
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