Antony Robotham | University Of Plymouth (original) (raw)

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Papers by Antony Robotham

Comparisons where there are significant differences between the visual stimulation and r... more Comparisons where there are significant differences between the visual stimulation and rest condition (Bonferroni corrected alpha levels of p = 0.0071, (0.05/7)) are highlighted in bold.</p

The labels identify the fixation point (BG/FG: background/foreground object fixation) an... more The labels identify the fixation point (BG/FG: background/foreground object fixation) and the type of anchor provided: visual – a rendered object in the foreground, touch – light finger touch, audio – a static white noise audio source.</p

Elements of the Virtual Reality Environment used in all experiments: the translating bac... more Elements of the Virtual Reality Environment used in all experiments: the translating background image (a barcode), the foreground object (a virtual or real teapot on a stand) and an avatar representing the observer in the scene.</p

This paper will describe the multi-board con- cept, which is a working approach for sup- porting ... more This paper will describe the multi-board con- cept, which is a working approach for sup- porting life cycle oriented design and product quality. Aspects of this concept include con- struction of a common working environment where multiple display boards depict scenar- ios of the product life cycle, creating a shared quality mindset amongst designers, and developing creativity and synthesis in product design. The appropriateness of sc e- narios for supporting life cycle oriented de- sign will be argued and preliminary results from early experimentation will be presented. Initial results lead us to believe that the multi- board concept promises to be a useful means of communication amongst the design team. We believe that it fosters a thorough under- standing of life cycle events, which, in turn, inspires the design of innovative products of the highest quality.

The visual evoked stimuli were presented for three cycles/six seconds at 0.5 Hz (grey un... more The visual evoked stimuli were presented for three cycles/six seconds at 0.5 Hz (grey underlay), followed by a six second pause where a static visual scene was displayed. To quantify visually evoked motion the proportion of energy of the head motion at the stimulus frequency of 0.5 Hz (black bar in the lower two figures) relative to the total energy in the spectrum was computed. During the initial six seconds a large spectral component (30% of the total energy) at the stimulus frequency is clearly visible while during the final six seconds energy at 0.5 Hz accounts for only 10% of the total energy.</p

The labels identify the fixation point (BG/FG: background/foreground object fixation) an... more The labels identify the fixation point (BG/FG: background/foreground object fixation) and whether the foreground object was a virtual representation or a physical object (real). Conditions ‘BG virtual’/‘BG real’ and ‘FG virtual’/‘FG real’ represent equivalent stimulus configurations where responses to real and virtually represented objects are compared.</p

The graph shows that initially the VEPR for the BG real response lags 110° behind the FG... more The graph shows that initially the VEPR for the BG real response lags 110° behind the FG real VEPR but as the analysis window moves through the VEPR, the phase difference reduces to approximately 20°.</p

The conditions are the same as shown in Fig. 10.</p

Participants were asked to press a button when the fixation target (either a red dot on ... more Participants were asked to press a button when the fixation target (either a red dot on the background image (A) or a blue dot on the foreground object (B)) transiently disappeared. Panel C shows a plan view of the room layout: Participants viewed a moving image of a barcode 4 m ahead of them. A real or virtual teapot on a stand 2 m from the observer was used as a foreground object.</p

All comparisons showed significant differences between the visual stimulation and rest c... more All comparisons showed significant differences between the visual stimulation and rest condition (Bonferroni corrected alpha levels of p = 0.0071, (0.05/7)).</p

All comparisons show significant differences between the visual stimulation and rest con... more All comparisons show significant differences between the visual stimulation and rest condition (Bonferroni corrected alpha levels of p = 0.01, (0.05/5)).</p

The graphs are offset by 1.0 mm to enhance visibility.</p

The graphs are offset by 0.5 mm to enhance visibility. The labels identify the fixation ... more The graphs are offset by 0.5 mm to enhance visibility. The labels identify the fixation point (BG/FG: background/foreground object fixation) and the type of anchor provided: visual – a rendered object in the foreground, touch – light finger touch, audio – a static white noise audio source.</p

The V-type vertical axis wind turbine (V-VAWT) is of simple design and construction, has a low ae... more The V-type vertical axis wind turbine (V-VAWT) is of simple design and construction, has a low aerodynamic efficiency, yet its originators consider that it will be a cost effective configuration in electricity generation applications. However, the quality and reliability of its power output must be ensured; this necessarily requires continual control of rotor speed and power. The initial V-VAWT investigations of Sharpe and Taylor, and methods of wind turbine control are reviewed. Partial-span pitch angle variation is considered the most promising option, and the systematic investigation of this control method in V-VAWT applications is reported. This work includes the design, construction and performance testing of a small V-VAWT with pitching blade tips. The tests showed that rotor power can be regulated with small blade tip areas, however, correlation between the measured and theoretical results was not good. Wind tunnel test were undertaken to determine the characteristics of the ...

In collaboration with Airbus-UK, the dimensional growth of small panels while being riveted with ... more In collaboration with Airbus-UK, the dimensional growth of small panels while being riveted with stiffeners is investigated. The stiffeners have been fastened to the panels with rivets and it has been observed that during this operation the panels expand in the longitudinal and transverse directions. It has been observed that the growth is variable and the challenge is to control the riveting process to minimize this variability. In this investigation, the assembly of the small panels and longitudinal stiffeners has been simulated using low and high fidelity nonlinear finite element models. The models have been validated against a limited set of experimental measurements; it was found that more accurate predictions of the riveting process are achieved using high fidelity explicit finite element models. Furthermore, through a series of numerical simulations and probabilistic analyses, the manufacturing process control parameters that influence panel growth have been identified. Alter...

School of Art and Design The origins of the School of Art and Design can be traced back to 1843. ... more School of Art and Design The origins of the School of Art and Design can be traced back to 1843. Since then the School has developed a spectrum of design teaching capabilities from visual art, communications and media, information design and industrial design. The industrial design courses and teaching provision are not only unique in the UK but have achieved international acclaim. In particular, recent graduates from the Transport Design courses have been employed by Citroën, Dutch Rail, Mercedes Benz, Nissan International, and Rover Group amongst others.

International Journal of Mechanics and Materials in Design, 2011

... Gasser F. Abdelal Jonathan E. Cooper Antony J. Robotham ... In case the performance funct... more ... Gasser F. Abdelal Jonathan E. Cooper Antony J. Robotham ... In case the performance function Z can be defined as Z g X1, X2, ..., Xn ð Þ, the forward difference approach can be used to compute the derivatives oZ/oX1, oZ/oX2, ...,oZ/oXn at the point X0 1, X0 2, ..., Ā ...

The labels identify the fixation point (BG/FG: background/foreground object fixation) an... more The labels identify the fixation point (BG/FG: background/foreground object fixation) and whether the foreground object was a virtual representation or a physical object (real). Conditions ‘BG virtual’/‘BG real’ and ‘FG virtual’/‘FG real’ represent equivalent stimulus configurations where responses to real and virtually represented objects are compared.</p

The conditions are the same as shown in Fig. 10.</p

The graphs are offset by 1.0 mm to enhance visibility.</p

International Journal of Mechanics and Materials in Design, 2011