Two human pathogenic bacteria, Staphylococcus aureus CIP 68.5 and Pseudomonas aeruginosa ATCC 9025, were adsorbed onto surfaces containing Ti thin films of varying thickness to determine the extent which nanoscale surface roughness influences bacterial attachment. A magnetron sputter film system was used deposit titanium with thicknesses 3, 12, 150 nm on glass substrata corresponding parameters R(q) 1.6, 1.2, 0.7 (on a 4 microm x scanning area). The chemical composition, wettability,...

Summary The study explored context‐driven food odour perception with links to chemical profiling of flavour compounds. Participants rated the intensity three odours (vanilla, almond, lemon) in a Neutral context and VR simulation International Space Station. involved 54 adults aged 18–39 years no history motion sickness and/or vertigo. demonstrated significantly higher ratings for vanilla ( P = 0.009) almond < 0.001) odours, compared context. Clustering based on perceived identified that...

Because of computational grid heterogeneity, scale and complexity, faults become likely. Therefore, infrastructure must have mechanisms to deal with while also providing efficient reliable services its end users. Existing fault-tolerant approaches are inefficient because they reactive incomplete. They only when take place; incomplete certain types faults. Proactive increase efficiency by reducing the cost time operations network resource usage maintaining state executing applications...

We present our monitoring and decision framework for collaborative engineering globally distributed operation, support, maintenance, services industrial automation. The provides relevant information to plant operators, engineers, staff stakeholders support the handling of incidents, based on semantically-appropriate factors such as personnel skills, physical location affected equipment dependencies between elements. discuss proposed application architecture implementation. Based incoming...

Change propagation has mainly been estimated by maintenance history or source code analysis. However, sometimes and are inaccessible, impractical to analyse, such as for heterogeneous sources. Previously we hypothesised that change from modifying domain level components may be predicted purely information available users. We proposed domain-based analysis, enabling analysts experts predict conceptual coupling independent of implementation. This paper reports on application analysis a...

We describe our ongoing work and view on simulation, validation visualization of cyber-physical systems in industrial automation during development, operation maintenance.System models may represent an existing physical part -for example robot installation -and a software simulated possible future extension.We call such cyber-virtual systems.In this paper, we present the VITELab infrastructure for tasks automation.The new methodology simulation motivated paper integrates infrastructure.We...

The Virtual eXperiences Lab at RMIT is a "21st century lab scope," an enabling platform for research and prototyping in industrial automation, focusing on software engineering, next generation human-machine interaction experiences, user interfaces, training. VxLab combines high resolution visualization, automation facilities cloud-based simulation servers dedicated private network. In this paper we describe the architecture, use cases, innovation projects. We also present experiences...

We present work towards using ontological information to facilitate collaborative tasks during operation, maintenance and service of industrial automation facilities. use semantic models as an additional layer for a collaboration framework enable automatic reasoning, decision support knowledge sharing among multiple parties. Documents such texts, workflows, images, social media profiles or production plants can be semantically annotated their classification. Our comprise behavior space...

We propose a novel methodology for analysing change propagation in software using the domain-level behavioural model of system. hypothesize that analysis is feasible based purely on information visible and understandable to domain experts, trading some accuracy productivity. Such method independent formal architectural representations may be practical applications with heterogeneous subsystems, or missing undocumented source code. In this paper we introduce first phase methodology: creating...

This paper presents ideas towards automatic monitoring of industrial automation devices by using a cloud based infrastructure. We are in particular aiming at fine grained timed properties that can be described formal specification techniques such as behavioral types. Possible applications the areas remote maintenance and servicing well commissioning testing. Our work is IEC 61499 standard.

Current models of component architectures require extensions to support compositional reasoning about extra-functional properties such as worst-case time. Studying in is complicated since actual components may not yet be chosen during architectural design, and different choices have significant hard predict effects on the system properties. In this paper we show how finite state automata Petri nets extended provide compositionality We focus time safety. illustrate use these techniques...

We present work towards a toolchain that combines our existing tools Reactive Blocks and BeSpaceD with remote collaboration visualization facility VxLab. Software development in areas such as oil gas, mining or automation is subject to configuration maintenance of installations. Different reasons are driving this trend including difficult accessibility sites outsourcing offsite experts due cheaper labor costs. Here, we concentrate on configuration, installation the software controlling these...

Failure in grids is costly and inevitable. Existing fault tolerance (FT) mechanisms are typically defensive reactive, thus unnecessarily costly. In this paper we propose a hybrid FT approach, recovery aware component (RAC), combining reactive proactive FT, with failure or aversion of user-defined granularity, by component-orientation architecture-level reasoning about to increase reliability availability without needless performance sacrifices. We model analyse parameterised RAC...

Failure in long running grid applications is arguably inevitable and costly. Therefore, fault tolerance (FT) support for needed. This paper evaluates an extension of our prior work on Recovery Aware Components (RAC), a component based FT approach. Our utilizes the application architecture according to small number architectural classes. In this paper, we evaluate MapReduce only analyze reliability improvement would gain by adopting RAC analysis shows that significant increases are possible...

We present work on structuring robotics simulation scenarios into components. Components can comprise entities with a physical counterpart such as automated guided vehicles, drones, robots and machines. are typically further structured sub-components, e.g., robot arm or gripper, be used to build digital twins. Different aspects for classifying components distinguished; here we concentrate composability, performance fidelity.In this paper, mainly concerned in the tool Gazebo Robot Operating...

We present an architecture for cloud-based analysis of manufacturing environments and derived robot actions. report on our implemented facility that combines visual a environment actions robots plus appropriate means human interaction with these cloud based services via hand gestures to interact results robots. The will enable study the software engineering most-feasible combinations interfaces remote equipment.

In this paper, we present our work on monitoring of control software behavior for PLCs. particular, are looking at IEC 61499-based specifications. Monitoring is done remotely, i.e., the interface function blocks streamed to a cloud-based service. Specifications realized using formal languages such as 1) regular expressions, 2) timed automata, 3) temporal logic. Monitors can be automatically generated from these languages. Using specifications, able detect abnormal in timing changes that can,...

Programming languages provide exception handling mechanisms to structure fault tolerant activities into software systems. However, the use of exceptions at this low level abstraction can be error-prone and complex leading new programming errors. In paper, we present a model-driven framework support iterative development reliable This is comprised UML-based modeling notations transformation engine that supports automated generation management features for system. It leverages domain specific...