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This paper investigates query processing in MANETs. Cache techniques and multi‐join database operations are studied. For data caching, a group‐caching strategy is proposed. Using the cache and the index of the cached data, queries can be processed at a single node or within the group containing this single node. For multi‐join, a cost evaluation model and a query plan generation algorithm are presented. Query cost is evaluated based on the parameters including the size of the transmitted data, the transmission distance and the query cost at each single node. According to the evaluations, the nodes on which the query should be executed and the join order are determined. Theoretical analysis and experiment results show that the proposed group‐caching based query processing and the cost based join strategy are efficient in MANETs. It is suitable for the mobility, the disconnection and the multi‐hop features of MANETs. The communication cost between nodes is reduced and the efficiency of the query is improved greatly.

“Black Day to Freedom” project was the culmination of five years of performance ethnography research that continues today in various forms through BeyondLabels. The title “Black Day to Freedom” came from an asylum seeker participating in a “free verse” workshop where all participants expressed their views on globalisation, social movement of people and identity. “Black Day to Freedom” his title, provides an insight into his perceptions of life and this framed a need to conduct further research into providing a voice for refugees and asylum seekers through informal multicultural education and associated visual arts expression.

The research follows a performance ethonographic perspective into the informal multicultural education project specific to exploring expressions of identity of refugee by migrant artists.

The informal multicultural education initiative specific to exploring expressions of identity of refugee by migrant artists was highly personalised and immersive in style with both educators and learners being co‐producers. This immersive, challenging, absorbing project required a passion by all to the mode of communications (visual arts) and the subject focus of refugee identity. The key implication of the informal multicultural education initiative is the unique insights provided by the migrant voices.

A key implication of this research into informal multicultural education practice in the context of supporting expressions of refugee indentity by migrant artists is the need for further research into pedagogy equity in the context of personalised learning design for non‐traditional learners. One key question for future studies would be how we can improve our understanding of the “bridge” between informal and formal education and as a consequence engage the non‐engaged from cultural diverse backgrounds in our educational institutions.

Provides insights into multicultural education initiatives.

This paper aims to investigate the suppression of end-point vibrations in industrial robot systems that exhibit joint flexibility and are subject to external disturbances.

The real-time position tracking error is effectively decomposed by using feedforward control based on a dynamic model. Various proportional-derivative controllers and adapted versions are used to compute real-time compensation torque for different position tracking errors. This approach aims to simultaneously achieve rapid response and stability in the control system, resulting in reduced end vibration in the industrial robot.

Experiments were conducted in torque compensation on a 6R industrial robot platform. Compared to the dynamic model calculate torque feedforward compensation method, the maximum reduction of the root mean square of the position error of each joint reached 77% and the minimum reduction was 36.2%. This enhancement improves the trajectory tracking accuracy and effectively suppresses the end-effector vibration.

An improved torque feedforward compensation method is proposed and verified. According to the experimental results, the method can effectively suppress vibration and further improve the trajectory tracking accuracy.