Brag Meeting 6th December 2018

When: Thursday 6th December 2018, 13:00-14:00.

Location: GP-Y801.

Included in meeting: 

The final BRAG meeting for 2018 will be held tomorrow 6th December 2018 at 1pm in room Y801. This week we will have presentations by Miles and Pubudu.

Miles’ Talk:

Title: Bridging Scientific Computing and Virtual Reality with R

Abstract:  Virtual and Augmented Reality presents a new medium, rich with interactive and dynamic possibilities for experiencing scientific spatial data. Exploring the potential of this medium requires a new set of tools that allow the user to move fluidly between 2D/3D/ND representations of data via flexible primitive representations. This talk will give an overview of the new R tools in this space developed by myself and my collaborator Michael Sumner (Australian Antarctic Division).

Pubudu’s Talk:

Title: Bayesian design methods for improving the effectiveness of monitoring coral reef communities

Abstract:  Experimental survey design methods underpin our ability to successfully monitor and manage environmental systems such as coral reefs. There are two basic types of designs; static designs, which remain fixed over time, and adaptive designs, which change over time. An advantage of adaptive design is that changes can be made as more is learned about the system, ensuring that more informative data are collected in an ongoing and flexible manner. Such an approach may be of particular benefit in coral reef monitoring where there is uncertainty due to sparse observations across space and time and uncertainty about the environmental processes affecting reefs. Therefore, we propose an adaptive design approach to improve the effectiveness of environmental monitoring, and apply this approach to monitor the Great Barrier Reef (GBR). We develop a model-based monitoring framework through analysing previously collected data and incorporating disturbance information such as cyclone risk, occurrence of bleaching events, and crown-of-thorns starfish outbreaks. The main monitoring objective is to understand fluctuations in hard coral cover and the precise estimation of model parameters that describe the impact of disturbances. We illustrate our methods using real data collected on the GBR coral reefs and use them to find designs that can change over time depending on reef condition and the disturbances that have been experienced. Our results show that adaptive design methods can be used to achieve reef monitoring objectives more effectively and efficiently than static designs.

We look forward to seeing you all there!

Regards

Trish and Farzana

The first BRAG meeting of 2019 will be held on Thursday 17th January 2019.

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